TECHNICAL FIELD

The present invention relates to an anti-vibration device of an automobile.

BACKGROUND ART

As this kind of anti-vibration device in conventional art, an anti-vibration device disclosed in Patent Literature 1 is known. This anti-vibration device includes an anti-vibration device body including a first attachment member, a second attachment member, and an insulator elastically coupling the attachment members together. The anti-vibration device body is fixed to a bracket by press-fitting the second attachment member to the inside of the bracket.

Downsizing of the anti-vibration device has been requested along with downsizing of the engine room of an automobile. A typical anti-vibration device such as the anti-vibration device described in Patent Literature 1 has a circular outer shape in planar view, which is likely to lead to a decrease of space efficiency. To address this, as an anti-vibration device with space saving taken into account, there has been discussed an anti-vibration device including an anti-vibration device body having, for example, a substantially rectangular outer shape in planar view.

In this case, a bracket including facing wall parts and having an opening at least on one side is used. Then, two facing outside parts of the anti-vibration device body is press-fit into the space between the facing wall parts. In this way, an anti-vibration device in which the anti-vibration device body is fixed to the bracket is achieved.

CITATION LIST

Patent Literature

Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2015-206402

SUMMARY OF INVENTION

Technical Problem

However, in the above-described case where the anti-vibration device body is fixed between the facing wall parts of the bracket by press-fitting, the direction in which the anti-vibration device body contacts the facing wall parts is different from the direction in which the anti-vibration device body may come off from the bracket. For this reason, movement of the anti-vibration device body relative to the bracket in the coming-off direction is difficult to restrict by way of the press-fitting alone, and it has been required to make improvements to the above structure.

The present invention has been made to solve the above problem and an object of the invention is to provide an anti-vibration device provided with a bracket including facing wall parts between which an anti-vibration device body is press-fitted, the anti-vibration device being capable of favorably preventing the anti-vibration device body from coming off the bracket.

Solution to Problem

In order to solve the above problem, an anti-vibration device according to the present invention includes: an anti-vibration device body in which an insulator is interposed between a first attachment member and a second attachment member; and a bracket including facing wall parts between which the anti-vibration device body is fixed by press-fitting via the second attachment member. The second attachment member is provided with locking parts that are locked to the wall parts to restrict movement of the anti-vibration device body in a direction opposite to a press-fitting direction in which the anti-vibration device body is press-fitted to the bracket. Each of the locking parts includes an arm part extending in the direction opposite to the press-fitting direction in which the anti-vibration device body is press-fitted to the bracket, and a hook part provided at an end part of the arm part in the direction in which the arm part extends and locked to a part to be locked provided on one of the wall parts.

In such an anti-vibration device, when the anti-vibration device body is press-fitted to the bracket via the second attachment member, the hook part of each locking part provided on the second attachment member is locked to the part to be locked provided on the corresponding wall part of the bracket, which completes the press-fitting. The arm part of the locking part extends in the direction opposite to the press-fitting direction in which the anti-vibration device body is press-fitted to the bracket, and the hook part is provided at the end part of the arm part in the direction in which the arm part extends. With this configuration, after locking, the arm part sluts against movement of the anti-vibration device body in the coming-off direction, in other words, movement thereof in the direction opposite to the press-fitting direction. Accordingly, the movement of the anti-vibration device body in the coming-off direction is directly restricted by the locking part, and disposition (fixation) of the anti-vibration device body onto the bracket is excellently maintained.

Moreover, in the above-described anti-vibration device, it is preferable that the part to be locked to which the hook part of each locking part is locked is a locking hole. With this configuration, the part to be locked can be easily formed.

Moreover, in the above-described anti-vibration device, it is preferable that the locking parts are formed integrally with the second attachment member when the second attachment member is made of resin. With this configuration, the locking part can be easily formed. In addition, the locking part can easily have elasticity, which leads to improvement of assembly easiness.

Moreover, in the above-described anti-vibration device, it is preferable that the second attachment member includes a frame member, and an outer tubular member fixed to the frame member, and the locking parts are provided on at least one of the frame member and the outer tubular member. With this configuration, the second attachment member is made of at least two members, and the locking parts are provided on one of the two members, and thus shaping easiness and assembly easiness can be improved.

Advantageous Effects of Invention

The present invention allows an anti-vibration device to be obtained, which is provided with a bracket including facing wall parts between which an anti-vibration device body is press-fitted, the anti-vibration device being capable of favorably preventing the anti-vibration device body from coming off the bracket.

