CROSS-REFERENCE TO RELATED APPLICATION

This application is a 371 application of the international PCT application serial no. PCT/JP2018/022173, filed on Jun. 11, 2018, which claims the priority benefits of Japan application no. 2017-128804 filed on Jun. 30, 2017, Japan application no. 2017-128805 filed on Jun. 30, 2017, Japan application no. 2017-128806 filed on Jun. 30, 2017, and Japan application no. 2017-128807 filed on Jun. 30, 2017. The entirety of each of the abovementioned patent applications is hereby incorporated by reference herein and made a part of this specification.

TECHNICAL FIELD

The present invention relates to an actuator that generates various vibrations.

BACKGROUND ART

As a device that generates vibration by a magnetic drive mechanism, there is suggested an actuator that vibrates a movable body in a second direction intersecting a first direction with respect to a support body by a magnetic drive circuit equipped with a coil and a magnet facing each other in the first direction (see Patent Literature 1). In the actuator described in Patent Literature 1, a yoke provided on the support body is composed of a unitary magnetic plate folded in a U-shape in such a manner that a first plate part and a second plate part face each other, and a permanent magnet is held on each of the surface of the first plate part on the second plate part side and the surface of the second plate part on the first plate part side. In addition, a coil held on the movable body is disposed between the magnet held on the first plate part and the magnet held on the second plate part.

Moreover, in the actuator described in Patent Literature 1, a viscoelastic member composed of a gel-like damper member is disposed between the movable body and the support body, and the movable body is supported on the support body via the viscoelastic member, and the resonance when the movable body is driven is suppressed. More specifically, in the support body, a first cover member, a holder holding the magnet, and a second cover member are stacked and disposed in the first direction, and the viscoelastic member is disposed between the first cover member and the movable body and between the second cover member and the movable body.

Furthermore, as a device that generates vibration by a magnetic drive mechanism, there is suggested an actuator that vibrates a movable body in a second direction intersecting a first direction with respect to a support body by a magnetic drive circuit equipped with a coil and a magnet facing each other in the first direction (see Patent Literature 1). In the actuator described in Patent Literature 1, in one of a first cover member and a second cover member, a plurality of prismatic parts are formed, and the prismatic parts contact the movable body to restrict a movable range of the movable body to a one side in the second direction when the movable body moves to the one side in the second direction. In addition, the prismatic parts contact the movable body to restrict a movable range of the movable body to a different side in the second direction when the movable body moves to the other side in the second direction.

CITATION LIST

Patent Literature

Patent Literature 1: Japanese Unexamined Patent Publication No. 2016-127789

SUMMARY

Problems to be Solved by the Invention

However, for a yoke bent into a U-shape as in the actuator described in Patent Literature 1, it is difficult to efficiently manufacture a yoke in which a magnet is fixed to surfaces facing each other in a first plate part and a second plate part, such as taking a lot of work to fix a magnet on the surface of the first plate part that faces the second plate part or the surface of the second plate part that faces the first plate part.

In view of the above problem, a first object of the present invention is to provide an actuator for which a yoke in which a magnet is fixed to surfaces facing each other in a first plate part and a second plate part can be efficiently manufactured.

In addition, as the actuator described in Patent Literature 1, the first cover member, holder, and second cover member are stacked and disposed in the first direction, and thus an interval between the first cover member and the movable body in the first direction and an interval between the second cover member and the movable body in the first direction may vary. In this case, a gap may be generated between the viscoelastic member and the first cover member, between the viscoelastic member and the movable body, or between the viscoelastic member and the second cover member. If such gap is generated, the resonance when the movable body is driven will not be suppressed.

In view of the above problem, a second object of the present invention is to provide an actuator for which a viscoelastic member can be properly disposed between a support body and a movable body.

Moreover, as the actuator described in Patent Literature 1, when the prismatic parts formed on the cover member are used as a contacted part that restricts the movable range of the movable body, the strength of the prismatic parts (contacted part) is small, and thus there is a problem that the prismatic parts are damaged when the movable body rapidly moves due to an impact when dropped or the like.

In view of the above problem, a third object of the present invention is to provide an actuator for which the strength of a contacted part that restricts a movable range of a movable body can be increased.

Furthermore, in the actuator described in Patent Literature 1, if an end at the beginning of winding and an end at the end of winding of a coil wire are each left being pulled out to the outside of the cover, the ends of the coil wire may be pulled and the coil may be damaged.

In view of the above problem, a fourth problem of the present invention is to provide an actuator for which an end of a coil can be properly processed.

Means for Solving the Problem

In order to solve the above problem, an actuator to which a first aspect of the invention is applied includes: a support body; a movable body; a connection body connected to the movable body and the support body and having at least one of elasticity and viscoelasticity; and a magnetic drive circuit relatively moving the movable body with respect to the support body. The magnetic drive circuit includes a coil provided on an either one side member of the support body and the movable body and a first magnet provided on a different side member of the support body and the movable body and facing the coil in a first direction, and drives the movable body in a second direction intersecting the first direction. The other side member includes a first yoke including a first plate part facing the coil on a one side in the first direction and a second yoke including a second plate part facing the coil on a different side in the first direction. The first magnet is fixed to one of a surface of the first plate part facing the coil and a surface of the second plate part facing the coil. The first yoke includes: a first connecting plate part that extends from the first plate part toward the other side in the first direction to a position overlapping the second yoke and that is connected to the second yoke; and a second connecting plate part that extends from the first plate part toward the other side in the first direction to a position overlapping the second yoke and that is connected to the second yoke, on a side opposite to the first connecting plate part with respect to the first magnet.

In the first aspect of the invention, the first magnet is fixed to one of the first plate part and the second plate part facing each other in the first direction in the yoke, and the yoke includes a first yoke including the first plate part and a second yoke including the second plate part. Thus, if the first magnet and the second yoke are connected after fixing the first magnet, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be manufactured. In addition, the first yoke includes the first connecting plate part and the second connecting plate part extending toward the second yoke, and thus, the first connecting plate part and the second yoke can be connected, and the second connecting plate part and the second yoke can be connected on the other side in the first direction (the side where the second yoke is located). Consequently, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be efficiently manufactured.

In the first aspect of the invention, an aspect can be employed in which the first connecting plate part and the second connecting plate part are each bent from an end located on opposite sides of the first plate part toward the other side in the first direction. According to such an aspect, the first yoke can be efficiently manufactured.

In the first aspect of the invention, an aspect can be employed in which the magnetic drive circuit includes a second magnet fixed to the surface of the first plate part facing the coil and a different side of the surface of the second plate part facing the coil. According to such an aspect, the power of the magnetic drive circuit can be increased. Even in this case, after the first magnet and the second magnet are fixed to the first plate part and the second plate part and the first yoke and the second yoke are connected, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be manufactured. In the present invention, an aspect in which the first connecting plate part and the second connecting plate part are connected to the second yoke by welding can be employed.

In the first aspect of the invention, an aspect can be employed in which an end on the other side in the first direction of the first connecting plate part overlaps a first side surface of the second plate part, and the first connecting plate part and the first side surface of the second yoke are welded, and an end on the other side in the first direction of the second connecting plate part overlaps a second side surface of the second plate part, and the second connecting plate part and the second side surface of the second yoke are welded. According to such an aspect, since welding can be performed from the other side in the first direction, welding work can be efficiently performed.

In the first aspect of the invention, an aspect can be employed in which in either one of the end on the other side in the first direction of the first connecting plate part and the first side surface, a protruding part fitted and welded into a recessed part formed on the other is formed, and in either one of the end on the other side in the first direction of the second connecting plate part and the second side surface, a protruding part fitted and welded into a recessed part formed on the other is formed. According to such an aspect, the first yoke and the second yoke can be joined together in a state of being positioned by the recessed parts and the protruding parts.

In the first aspect of the invention, an aspect can be employed in which the first connecting plate part extends toward the other side in the first direction through a one side in the second direction with respect to the coil, and the second connecting plate part extends toward the other side in the first direction through a different side in the second direction with respect to the coil.

In the first aspect of the invention, an aspect can be employed in which the coil is held in a holder, the first connecting plate part constitutes a first stopper that contacts the holder to restrict a movable range of the movable body to a one side in the second direction when the movable body moves to the one side in the second direction, and the second connecting plate part constitutes a second stopper that contacts the holder to restrict a movable range of the movable body to a different side in the second direction when the movable body moves to the other side in the second direction. In this case, an aspect can be employed in which the holder is formed with an opening through which the first connecting plate part and the second connecting plate part pass from the one side toward the other side in the first direction.

In the first aspect of the invention, an aspect can be employed in which the one side member is the support body, the other side member is the movable body, and the support body includes a cover member whose ends overlap each other in the first direction with respect to the holder. According to such an aspect, the support body can be configured by stacking the cover member on the holder.

In the first aspect of the invention, an aspect can be employed in which the holder and the cover member are formed with a positioning protruding part that protrudes from either one of the holder and the cover member toward the other and fits into a positioning hole formed on the other. According to such an aspect, the holder and the cover member can be positioned.

In the first aspect of the invention, an aspect in which a viscoelastic member is used as the connection body can be employed. In this case, an aspect in which only the viscoelastic member is used as the connection body can be employed. In the present invention, an aspect in which the viscoelastic member is fixed to both the movable body and the support body can be employed. In the present invention, an aspect in which the viscoelastic member is a gel-like member can be employed. In the present invention, an aspect in which the gel-like member is a silicone-based gel can be employed. In the present invention, an aspect in which the viscoelastic member is disposed at a position where the support body and the movable body face each other in the first direction.

According to such an aspect, when the movable body moves, the elastic member deforms in a direction (shear direction) intersecting a thickness direction (axial direction). Thus, since the deformation is in a direction of being pulled and stretched regardless of a direction of movement, the viscoelastic member has a deformation property in which a linear component (spring coefficient) is larger than a non-linear component (spring coefficient). Therefore, the viscoelastic member has a constant spring force due to the direction of movement. Accordingly, the reproducibility of vibration acceleration for an input signal can be improved by using a spring element in the shear direction of the viscoelastic member, and thus a vibration with a subtle nuance can be achieved.

In order to solve the above problem, an actuator to which a second aspect of the invention is applied includes: a support body; a movable body; a viscoelastic member connected to the movable body and the support body; and a magnetic drive circuit that includes a coil and a magnet facing the coil in a first direction, and that relatively moves the movable body with respect to the support body in a second direction intersecting the first direction. The viscoelastic member is disposed in a state of being compressed in the first direction at a location where the support body and the movable body face each other in the first direction.

In the second aspect of the invention, the viscoelastic member is disposed at a location where the support body and the movable body face each other in the first direction, and the magnetic drive circuit drives the movable body in the second direction intersecting the first direction. In doing so, the elastic member deforms in a direction (shear direction) intersecting a thickness direction (axial direction). Thus, since the deformation is in a direction of being pulled and stretched regardless of a direction of movement, the viscoelastic member has a deformation property in which a linear component (spring coefficient) is larger than a non-linear component (spring coefficient). Therefore, the viscoelastic member has a constant spring force due to the direction of movement. Accordingly, the reproducibility of vibration acceleration for an input signal can be improved by using a spring element in the shear direction of the viscoelastic member, and thus a vibration with a subtle nuance can be achieved. In addition, since the viscoelastic member is disposed in a compressed state in the first direction, the viscoelastic member reliably follows the movement of the movable body. Therefore, the resonance of the movable body can be effectively prevented.

In the second aspect of the invention, an aspect can be employed in which the support body comprises a plurality of members stacked in the first direction, and the viscoelastic member is disposed between any of the plurality of members and the movable body. In a case of such a configuration, in the support body, an interval between the locations where the support body and the movable body face each other in the first direction is likely to vary. However, since the viscoelastic member is disposed in a compressed state in the first direction, the viscoelastic member reliably follows the movement of the movable body.

In the second aspect of the invention, an aspect can be employed in which the support body comprises, as the plurality of members: a holder holding a coil or a magnet that constitutes the magnetic drive circuit; a first cover member whose ends overlap each other on a one side in the first direction with respect to the holder; and a second cover member whose ends overlap each other on a different side in the first direction with respect to the holder, and the viscoelastic member is provided between the movable body and the first cover member and between the movable body and the second cover member. In a case of such configuration, in particular, since the dimensions of the locations where the viscoelastic member is disposed (between the movable body and the first cover member and between the movable body and the second cover member) are likely to vary, the effect by applying the present invention is remarkable.

In the second aspect of the invention, an aspect can be employed in which the coil is held in the holder, and the magnet faces the coil in the first direction on a side of the movable body.

In the second aspect of the invention, an aspect can be employed in which the first cover member, the holder, and the second cover member are fastened in the first direction by a screw having a screw shaft extending in the first direction. According to such an aspect, the viscoelastic member can be compressed in the first direction when fastening the first cover member, holder, and second cover member by tightening the screw.

In the second aspect of the invention, an aspect can be employed in which the magnetic drive circuit includes a coil provided on the support body and a magnet provided on the movable body and facing the coil in the first direction.

In the second aspect of the invention, an aspect can be employed in which a portion of the support body that contacts the viscoelastic member is a recessed part. According to such an aspect, the position of the viscoelastic member is difficult to shift.

In the second aspect of the invention, an aspect can be employed in which a surface of the viscoelastic member in contact with the support body is bonded to the support body, and a surface of the viscoelastic member in contact with the movable body is bonded to the movable body. According to such an aspect, the position of the viscoelastic member is difficult to shift.

In the second aspect of the invention, an aspect in which the viscoelastic member is a gel-like member can be employed.

In the second aspect of the invention, an aspect in which the gel-like member is a silicone-based gel can be employed.

In order to solve the above problem, an actuator to which a third aspect of the invention is applied includes: a support body; a movable body; a connection body connected to the movable body and the support body and having at least one of elasticity and viscoelasticity; and a magnetic drive circuit that includes a coil and a first magnet facing the coil in a first direction, and that relatively moves the movable body with respect to the support body in a second direction intersecting the first direction. The support body includes: a first wall part facing the movable body on a one side in the second direction; a second wall part facing the movable body faces on a different side in the second direction; a third wall part facing the movable body on a one side in a third direction intersecting the first direction and the second direction; and a fourth wall part facing the movable body on a different side in the third direction. A width in the second direction of the first wall part and the second wall part is wider than a width in the third direction of the third wall part and the fourth wall part. The first wall part includes a first contacted part that contacts the movable body to restrict a movable range of the movable body to a one side in the second direction when the movable body moves to the one side in the second direction. The second wall part includes a second contacted part that contacts the movable body to restrict a movable range of the movable body to a different side in the second direction when the movable body moves to the other side in the second direction.

In the third aspect of the invention, the support body is used as a contacted part (a first contacted part and a second contacted part) that contacts the movable body to restrict a movable range of the movable body in the second direction when the movable body moves in the second direction in the first wall part and second wall part facing the movable body on the one side and the other side in the second direction. Here, a width in the second direction of the first wall part and the second wall part is wider than a width in the third direction of the third wall part and the fourth wall part, and the strength is large. Therefore, even if the movable body rapidly moves in the second direction due to an impact when dropped or the like, the contacted part (the first contacted part and the second contacted part) is not easily damaged.

In the third aspect of the invention, an aspect can be employed in which the support body includes: a holder holding the coil or the first magnet; a first cover member whose ends overlap each other on a one side in the first direction with respect to the holder; and a second cover member whose ends overlap each other on a different side in the first direction with respect to the holder, and the first wall part and the second wall part each include a portion where the holder, the first cover member, and the second cover member overlap one another in the first direction. According to such an aspect, in the first wall part and the second wall part, a portion where the holder, first cover member, and second cover member overlap one another in the first direction can be used as a contacted part (a first contacted part and a second contacted part), the strength of the contacted part (the first contacted part and the second contacted part) is large.

In the third aspect of the invention, an aspect can be employed in which the holder and the first cover member are formed with a positioning protruding part that protrudes from either one of the holder and the first cover member toward the other and fits into a positioning hole formed on the other, and the holder and the second cover member are formed with a positioning protruding part that protrudes from either one of the holder and the second cover member toward the other and fits into a positioning hole formed on the other. According to such an aspect, the holder and the first cover member can be positioned, and the holder and the second cover member can be positioned.

In the third aspect of the invention, an aspect can be employed in which the coil is provided on a side of the support body in a state of being held by the holder, the first magnet is provided on the movable body, the movable body includes a first yoke including a first plate part facing the coil on the one side in the first direction and a second yoke including a second plate part facing the coil on the other side in the first direction, the first magnet is fixed to one of a surface of the first plate part facing the coil and a surface of the second plate part facing the coil, the first yoke includes: a first connecting plate part that extends from the first plate part toward the other side in the first direction to a position overlapping the second yoke and that is connected to the second yoke, on the one side in the second direction with respect to the coil; and a second connecting plate part that extends from the first plate part toward the other side in the first direction to a position overlapping the second yoke and that is connected to the second yoke, on the other side in the second direction with respect to the coil, the first connecting plate part contacts the first wall part to restrict a movable range of the movable body to the one side in the second direction when the movable body moves to the one side in the second direction, and the second connecting plate part contacts the second wall part to restrict a movable range of the movable body to the other side in the second direction when the movable body moves to the other side in the second direction. According to such an aspect, the first magnet is fixed to one of the first plate part and the second plate part facing each other in the first direction in the yoke, and the yoke includes a first yoke including the first plate part and a second yoke including the second plate part. Thus, if the first magnet and the second yoke are connected after fixing the first magnet, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be manufactured. In addition, the first yoke includes the first connecting plate part and the second connecting plate part extending from the first yoke toward the second yoke, and thus, the first connecting plate part and the second yoke can be connected, and the second connecting plate part and the second yoke can be connected on the one side in the first direction (the side where the second yoke is located). Consequently, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be efficiently manufactured. Moreover, a stopper that restricts the movable range of the movable body in the second direction can be configured with the use of the first connecting plate part and the second connecting plate part, and thus the configuration can be simplified.

In the third aspect of the invention, an aspect in which the first connecting plate part and the second connecting plate part are connected to the second yoke by welding can be employed. According to such an embodiment, since the first connecting plate part and the second connecting plate part are firmly connected to the second yoke, a stopper that restricts the movable range of the movable body in the second direction can be configured with the use of the first connecting plate part and second connecting plate part.

In the third aspect of the invention, an aspect can be employed in which the holder is formed with: a first opening part that allows the first connecting plate part to pass through from the one side toward the other side in the first direction, between the coil and the first wall part; and a second opening part that allows the second connecting plate part to pass through from the one side toward the other side in the first direction, between the coil and the second wall part. According to such an aspect, the first connecting plate part and the second connecting plate part can be extended to a position overlapping the second yoke with a simple configuration.

In the third aspect of the invention, an aspect can be employed in which the magnetic drive circuit includes a second magnet fixed to the surface of the first plate part facing the coil and a different side of the surface of the second plate part facing the coil. According to such an aspect, the power of the magnetic drive circuit can be increased. Even in this case, after the first magnet and the second magnet are fixed to the first plate part and the second plate part and the first yoke and the second yoke are connected, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be manufactured.

In the third aspect of the invention, an aspect can be employed in which a plurality of through holes are formed through the first cover member, the first yoke, the holder, and the second yoke, in a state where the first cover member, the first yoke, the holder, and the second yoke are stacked in the first direction. According to such an aspect, when assembling the actuator, a pin is inserted into each of the plurality of through holes, and the first yoke, holder and second yoke can be stacked in order in the first direction on the first cover member.

In the third aspect of the invention, an aspect in which a viscoelastic member is used as the connection body can be employed. In this case, an aspect in which only the viscoelastic member is used as the connection body can be employed. In the present invention, an aspect in which the viscoelastic member is fixed to both the movable body and the support body can be employed. In the present invention, an aspect in which the viscoelastic member is a gel-like member can be employed. In the present invention, an aspect in which the gel-like member is a silicone-based gel can be employed.

In the third aspect of the invention, an aspect can be employed in which the viscoelastic member is disposed at a position where the support body and the movable body face each other in the first direction. According to such an aspect, the elastic member deforms in a direction (shear direction) intersecting a thickness direction (axial direction). Thus, since the deformation is in a direction of being pulled and stretched regardless of a direction of movement, the viscoelastic member has a deformation property in which a linear component (spring coefficient) is larger than a non-linear component (spring coefficient). Therefore, the viscoelastic member has a constant spring force due to the direction of movement. Accordingly, the reproducibility of vibration acceleration for an input signal can be improved by using a spring element in the shear direction of the viscoelastic member, and thus a vibration with a subtle nuance can be achieved.

In order to solve the above problem, an actuator to which a fourth aspect of the invention is applied includes: a support body; a movable body; a connection body connected to the movable body and the support body and having at least one of elasticity and viscoelasticity; and a magnetic drive circuit that includes a coil and a first magnet facing the coil in a one side in a first direction, and that relatively moves the movable body with respect to the support body in a direction intersecting the first direction. The support body includes, on an outer surface side: a first side surface located on a one side in a second direction intersecting the first direction; a second side surface located on a different side in the second direction; a third side surface which is located on a one side in a third direction intersecting the first direction and the second direction, a length in the second direction of which being longer than a length in the third direction of the first side surface and the second side surface; and a fourth side surface which is located on a different side in the third direction, a length in the second direction of which being longer than the length in the third direction of the first side surface and the second side surface. A wiring board to which a first end at the beginning of winding and a second end at the end of winding of a coil wire constituting the coil are each electrically connected is fixed to the third side surface.

In the fourth aspect of the invention, since the coil wire is in the state of being electrically connected to the wiring board fixed to the third side surface of the support body, a situation where the ends of the coil wire is pulled and the coil is damaged is hard to occur. In addition, since the wiring board is fixed to the third side surface corresponding to the long side when viewed from the first direction among the side surfaces of the support body, it is possible to use the wiring board having a long dimension. Thus, regardless of the orientation, position, number, or the like of the coil, even if the first end and second end of the coil are not routed over a long distance, the ends of the coil can be properly processed, such as being easily electrically connected to the wiring board.

In the fourth aspect of the invention, an aspect can be employed in which the third side surface is formed with a hole through which the first end and the second end are passed, and the first end and the second end are connected to the wiring board through the hole. According to such an aspect, it is easy to route the first end and the second end to the wiring board.

In the fourth aspect of the invention, an aspect can be employed in which the coil is disposed in such a manner that a long side extends in the third direction, and the magnetic drive circuit drives the movable body in the second direction.

In the fourth aspect of the invention, an aspect can be employed in which a plurality of the coils are arranged so as to be in parallel in the second direction.

In the fourth aspect of the invention, an aspect can be employed in which the coil is held in a holder, and a guide groove through which the first end and the second end each pass is formed at an end in a one side in the third direction of the holder. According to such an aspect, it is easy to route the first end and the second end to the wiring board.

In the fourth aspect of the invention, an aspect can be employed in which the holder is formed with a coil holding hole in which the coil is housed.

In the fourth aspect of the invention, an aspect can be employed in which the magnetic drive circuit includes a second magnet facing the coil on a different side in the first direction.

In the fourth aspect of the invention, an aspect in which a viscoelastic member is used as the connection body can be employed. In this case, an aspect in which only the viscoelastic member is used as the connection body can be employed.

In the fourth aspect of the invention, an aspect in which the viscoelastic member is fixed to both the movable body and the support body can be employed. In the present invention, an aspect in which the viscoelastic member is a gel-like member can be employed. In the present invention, an aspect in which the gel-like member is a silicone-based gel can be employed.

In the fourth aspect of the invention, an aspect can be employed in which the viscoelastic member is disposed at a position where the support body and the movable body face each other in the first direction. According to such an aspect, the elastic member deforms in a direction (shear direction) intersecting a thickness direction (axial direction). Thus, since the deformation is in a direction of being pulled and stretched regardless of a direction of movement, the viscoelastic member has a deformation property in which a linear component (spring coefficient) is larger than a non-linear component (spring coefficient). Therefore, the viscoelastic member has a constant spring force due to the direction of movement. Accordingly, the reproducibility of vibration acceleration for an input signal can be improved by using a spring element in the shear direction of the viscoelastic member, and thus a vibration with a subtle nuance can be achieved.

Effect of the Invention

In the first aspect of the invention, the first magnet is fixed to one of the first plate part and the second plate part facing each other in the first direction in the yoke, and the yoke includes a first yoke including the first plate part and a second yoke including the second plate part. Thus, if the first magnet and the second yoke are connected after fixing the first magnet, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be manufactured. In addition, the first yoke includes the first connecting plate part and the second connecting plate part extending toward the second yoke, and thus, the first connecting plate part and the second yoke can be connected, and the second connecting plate part and the second yoke can be connected on the other side in the first direction (the side where the second yoke is located). Consequently, a yoke in which the magnet is fixed to the surfaces facing each other in the first plate part and the second plate part can be efficiently manufactured.

In the second aspect of the invention, the viscoelastic member is disposed at a location where the support body and the movable body face each other in the first direction, and the magnetic drive circuit drives the movable body in the second direction intersecting the first direction. Thus, the resonance when the movable body is driven is suppressed by the viscoelastic member. In doing so, since the viscoelastic member is deformed in the shear direction, the viscoelastic member has a deformation property in which a linear component is larger than a non-linear component. Therefore, the resonance of the movable body can be effectively prevented by the viscoelastic member. In addition, since the viscoelastic member is disposed in a compressed state in the first direction, the viscoelastic member reliably follows the movement of the movable body, and thus the resonance of the movable body can be effectively prevented.

In the third aspect of the invention, the support body is used as a contacted part (a first contacted part and a second contacted part) that contacts the movable body to restrict a movable range of the movable body in the second direction when the movable body moves in the second direction in the first wall part and second wall part facing the movable body on the one side and the other side in the second direction. Here, a width in the second direction of the first wall part and the second wall part is wider than a width in the third direction of the third wall part and the fourth wall part, and the strength is large. Therefore, even if the movable body rapidly moves in the second direction due to an impact when dropped or the like, the contacted part (the first contacted part and the second contacted part) is not easily damaged.

In the fourth aspect of the invention, since the coil wire is in the state of being electrically connected to the wiring board fixed to the third side surface of the support body, a situation where the ends of the coil wire is pulled and the coil is damaged is hard to occur. In addition, since the wiring board is fixed to the third side surface corresponding to the long side when viewed from the first direction among the side surfaces of the support body, it is possible to use the wiring board having a long dimension. Thus, regardless of the orientation, position, number, or the like of the coil, even if the first end and second end of the coil are not routed over a long distance, the ends of the coil can be properly processed, such as being easily electrically connected to the wiring board.

