FIELD OF THE INVENTION

The present invention relates to a ratchet wrench and more particularly to a quick release ratchet wrench.

BACKGROUND OF THE INVENTION

Referring toFIGS. 10 to 12, the conventional ratchet wrench comprises a main body (40) having a driving portion (41) at an end thereof, and an accommodating hole (411) is formed at a center portion of the driving portion (41), and an inner wall of the accommodating hole (411) is communicated with a housing (412) to place a driving block (42). A socket (43) is cooperated with two magnetic pieces (44) on an outer periphery thereof to engage with driving block (42) in the accommodating hole (412). Moreover, a driving hole (431) penetrating through a center of the socket (43) is adapted to engage with a nut, and the magnetic pieces (44) are configured to attract the nut, thereby preventing falling off from the socket (43).

However, the conventional ratchet wrench has following disadvantages: (i) although the magnetic pieces (44) can attract the nut, it also makes the socket (43) not easy to detach from the main body (40), which is inconvenient for use; and (ii) the magnetic pieces (44) need to be positioned before installed into the accommodating hole (411) of the main body (40), which increases the difficulty in assembly. Therefore, there remains a need for a new and improved design for a ratchet wrench to overcome the problems presented above.

SUMMARY OF THE INVENTION

The present invention provides a ratchet wrench which comprises a main body and a quick release member. The main body has a driving end, and a tool hole vertically penetrates through the driving end. A housing concavely formed on an inner periphery of the tool hole is communicated with the tool hole, and a teeth section is installed in the housing. A ratchet wheel is rotated and driven into the tool hole through an end thereof which is defined as an inner end of the ratchet wheel, and an outer periphery of the ratchet wheel is adapted to engage with the teeth section of the tool hole so as to enable the ratchet wheel and the tool hole to have synchronous rotation. A driving hole axially penetrates through the ratchet wheel. The quick release member has a magnetic ring, a pressing member, and a cover. The magnetic ring is coupled and magnetically attached to an outer end of the ratchet wheel. The pressing member is a column having the outer diameter smaller than the inner diameter of the magnetic ring, and a locating flange formed at a middle portion of an outer periphery of the pressing member has the outer diameter larger than the inner diameter of the magnetic ring, and the pressing member comprises a first pressing section and a second pressing section respectively formed at two sides of the locating flange. The first pressing section is adapted to pass through a center hole of the magnetic ring and insert into the driving hole of the ratchet wheel, and the locating flange is abutted against an outer end of the magnetic ring, and the second pressing section is configured to protrude out of the ratchet wheel. The cover has a through hole penetrating through a center portion thereof, and the cover is disposed on the second pressing section through the through hole, and the cover is configured to cover the magnetic ring and the pressing member and coupled on the outer end of the ratchet wheel.

In one embodiment, a locating edge is formed at an inner edge of an inner opening of the tool hole while a first annular groove is formed at an inner edge of an outer opening of the tool hole; the inner end of the ratchet wheel has a locating recess which is configured to engage with the locating edge of the tool hole, and the outer end of the ratchet wheel comprises a second annular groove which is cooperated with a C-shaped ring to engage with the first annular groove.

In another embodiment, the teeth section is connected to a pulling member which is adapted to drive and move the teeth section in the housing so as to adjust the engagement between the teeth section and the ratchet wheel when the tool hole is rotated in clockwise direction or counterclockwise direction.

In still another embodiment, a locating groove is formed at the outer end of the ratchet wheel, and the magnetic ring is positioned by engaging with the locating groove.

In a further embodiment, the magnetic ring is fixed with the ratchet wheel by glue.

In still a further embodiment, the cover is fixed with the outer end of the ratchet wheel by glue.

In a particular embodiment, an annular protruding portion is extended from an end of the cover, and a surface of an outer periphery of the annular protruding portion comprises a rough texture thereon.

Comparing with conventional ratchet wrench, the present invention is advantageous because: the main body is cooperated with a quick release member through the ratchet wheel, and the pressing member of the quick release member is adapted to move relative to the driving hole and the magnetic ring, such that the sleeve can be easily coupled in or detected from the driving hole so as to achieve the quick release effect.

