TW201431648A - Wrench - Google Patents

Abstract

A wrench comprises a handle, a head, a connection element and an elastic member. The handle is formed with an axle hole. The head portion includes a first driving portion and a second driving portion. The head is formed with a through hole. The connection element is movably disposed in the through hole and the axle hole. The connection element includes a first limiting element and an engaging portion. As the connection element is located in the first position, the engaging portion engages inner walls of the axle hole and the through hole. As the connection element is located in the second position, the engaging portion is away from the through hole but it still engages the axle hole, whereby, the head portion turns around an axis with respect to the handle and the first limiting element presses the elastic member. The connection element is inclined to move to the first position by the action force of the elastic member. As a result, the first and second driving portions can be changed. The operation way is easy and saves energy. The structure of the wrench is more simple and easy to be installed so that the manufacturing cost and the installation cost are reduced much more.

Description

wrench

The present invention relates to a wrench, and more particularly to a wrench that can change the drive portion.

Wrench is a relatively conventional hand tool, and there is a wrench that can be used to change the drive portion. For example, as disclosed in U.S. Patent Nos. 5,557,992 and TW501512, the conventional wrench has various uses.

However, in the operation of the wrench of US 5,557,992, it is necessary to force the head to force the bead of the limiting block out of the slot of the long hole, so that the limiting block can be slipped into the circular hole for rotating the head. After changing the driving part, the head must be pushed again to make the bead contraction, so that the limiting block can slide into the long hole and be positioned by the bead body to complete the action of the transformation driving part, thus causing the whole transformation process. It is quite laborious, and the movements such as up and down shifting and rotating the head cause inconvenience and cumbersome transformation, so that the user cannot easily and quickly change the driving portion.

The TW501512 is a ratchet mechanism consisting of a ratchet, a rocking block and a limit mechanism to improve the above-mentioned conventional wrench problem. However, the TW501512 wrench has many problems listed below:

1. The switching operation mode of the two driving parts is the same as the operation mode of the ratcheting reversing, and the two clamping portions of the swaying block are alternately engaged with the ratchet wheel, so that the user needs to convert the two driving parts each time or When switching the direction of the ratchet, you must first confirm the steering of the ratchet, in order to know which direction the head is going to rotate, it is completely operated by feeling.

2. Since the two driving parts are affected by different clamping parts, the driving direction of the two driving parts is also changed after the two driving parts are switched, and the user can easily generate the driving direction of the different driving parts after alternate use. Confused, increasing the troubles of operation.

3. The structure of TW501512 is more complicated than US5,557,992, and the assembly is not easy, which makes the manufacturing and assembly cost high.

A main object of the present invention is to provide a wrench in which the switching operation of the two driving portions is easy to operate, labor-saving, and the driving direction of each driving portion is clear.

The main object of the present invention is to provide a wrench which has the advantages of simple overall structure, easy assembly and low cost.

To achieve the above object, the wrench of the present invention includes a handle, a head, a coupling member and an elastic member.

The handle defines a shaft hole; the head includes a first driving portion and a second driving portion, the head defines a consistent hole, the through hole is located between the first and second driving portions; the coupling member is movable The coupling member includes a first limiting member and an engaging portion; the elastic member abuts against the first limiting member, and the other end abuts against the head and the One of the grips; wherein the engaging member is movable between the first position and the second position along the axial direction of the through hole and the shaft hole, and the engaging member is in the first position when the engaging member is in the first position The part is simultaneously engaged with the shaft hole and the through hole, so that the head is fixed to the handle, when the joint is in the second position Positioning, the engaging portion is at least away from the one of the through hole and the shaft hole, so that the head rotates relative to the handle about an axis. At this time, the first limiting member compresses the elastic member to make the combination The piece moves normally in the direction of the first position.

Therefore, the wrench of the present invention achieves the purpose of alternately using the first and second driving portions of the head, and the operation mode is very simple and labor-saving, so that the structure of the wrench of the present invention can be more compact and easy to assemble, thereby effectively reducing manufacturing. And the cost of assembly.

10‧‧‧Handle

11‧‧‧Axis hole

12‧‧‧ counterbore

20‧‧‧ head

21‧‧‧First Drive Department

22‧‧‧Second drive department

23‧‧‧Tongkong

30‧‧‧Connected parts

31‧‧‧First limiter

32‧‧‧ pole

321‧‧‧ hole

33‧‧‧Meshing Department

34‧‧‧second limiter

35‧‧‧ Ring groove

40‧‧‧Flexible parts

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded view of a preferred embodiment of the present invention.

Figure 2 is a perspective view of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.

4 is a cross-sectional view of the head relative to the handle rotation of the preferred embodiment of the present invention.

Figure 5 is a schematic illustration of the rotation of the head relative to the handle of the preferred embodiment of the present invention.

Figure 6 is an exploded view of another embodiment of the present invention.

Figure 7 is a cross-sectional view showing another embodiment of the present invention.

Figure 8 is a cross-sectional view of the head rotated relative to the handle in accordance with another embodiment of the present invention.

Fig. 9 is a view showing another aspect of the first and second driving portions of the present invention.

In the following, the structural features of the present invention and the intended effects thereof will be described in the following examples, and are not intended to limit the scope of the invention as claimed.

Referring to FIG. 1 to FIG. 3, in a preferred embodiment of the present invention, the wrench of the present invention comprises a handle 10, a head 20, a coupling member 30 and an elastic member 40.

The shaft 10 defines a shaft hole 11 , and the shaft hole 11 is adjacent to one end of the handle 10 . The shaft hole 11 has an inner wall surface. The inner wall surface of the shaft hole 11 is non-circular. In this embodiment, The inner wall surface of the shaft hole 11 has a polygonal shape (the shaft hole 11 shown in FIG. 1 is a hexagonal hole). In other embodiments, the inner wall surface of the shaft hole 11 may also be provided with a plurality of tooth blocks.

The head portion 20 includes a first driving portion 21 and a second driving portion 22. In the embodiment, the first and second driving portions 21 and 22 of the head portion 20 are respectively closed by two different sizes. The opening is a driving device of a wrench, which can respectively correspond to two different sizes of nuts and the like, as shown in FIG. 1 . In other embodiments, the first and second driving portions 21 and 22 of the head 20 are respectively Each of the two differently sized open openings serves as a driving device for an open-ended wrench. As shown in FIG. 9, the first and second driving portions 21 and 22 of the head 20 are not The other driving device (for example, a sleeve) of the hand tool that can directly or indirectly drive the rotation of the workpiece can be the first and second driving portions 21 and 22 of the head 20 of the present invention. It should be noted that the first and second driving portions 21 and 22 of the head 20 do not necessarily have a difference in size, and the first and second driving portions 21 and 22 of the head portion 20 may have two different aspects. The driving device of the hand tool is composed of, for example, the first driving portion is a polygonal closing opening, and the second driving portion is a sleeve. The head 20 defines a continuous hole 23. The through hole 23 is located between the first and second driving portions 21 and 22 of the head 20. The through hole 23 has an inner wall surface, and the inner wall surface of the through hole 23 has a shape Corresponding to the shape of the shaft hole 11 is non-circular. In this embodiment, the inner wall surface of the through hole 23 is polygonal (the through hole 23 shown in FIG. 1 is a hexagonal hole). In other embodiments, The inner wall surface of the through hole 23 can also be provided with a plurality of teeth.

The coupling member 30 is movably disposed on the through hole 23 and the shaft hole 11. The coupling member 30 includes a first limiting member 31. One end of the elastic member 40 abuts against the first limiting member 31. Abutting the head 20, specifically, the coupling member 30 includes a first end portion and a second end portion. a rod portion 32 and an engaging portion 33, the rod portion 32, the engaging portion 33 and the second end portion are integrally formed, the second end portion forming a second limiting member 34, the rod portion 32 and the engaging portion After passing through the shaft hole 11 and the through hole 23, the second limiting member 34 abuts against the handle 10. The elastic member 40 is a metal coil spring and is sleeved in the rod portion in this embodiment. 32. The first limiting member 31 is a head end of a fastener. The rod portion 32 defines a hole 321 . The fastener is detachably fixed to the hole 321 . The elastic member 40 abuts against the first end. The limiting member 31 is abutted against the head portion 20, and the first limiting member 31 is the first end of the coupling member 30, as shown in FIG. 1 and FIG. The shape of the engaging portion 33 is non-circular according to the shape of the through hole 23 and the shaft hole 11. In the embodiment, the engaging portion 33 has a polygonal shape (the engaging portion shown in FIG. 1 is hexagonal). In other embodiments, the engaging portion 33 can also be provided with a plurality of teeth.

After the assembly is completed, as shown in FIG. 2 and FIG. 3, the coupling member 30 is movable between the first position and the second position along the axial direction of the through hole 23 and the shaft hole 11. When the engaging member 30 is in the first position, the engaging portion 33 is simultaneously engaged with the shaft hole 11 and the through hole 23, so that the head portion 20 is fixed to the handle 10. At this time, the first limiting member 31 And the rod portion 32 protrudes out of the through hole 23, and the second limiting member 34 abuts against the handle 10.

Referring to FIG. 4 and FIG. 5, when the user wants to rotate the head 20 to exchange the first and second driving portions 21 and 22, the first limiting member 31 is first pressed to displace the coupling member 30 to the second position. . When the coupling member 30 is in the second position, the engaging portion 33 is away from the through hole 23 , but still engages with the shaft hole 11, so that the head portion 20 rotates relative to the handle 10 about an axis to complete the exchange. The action of the second driving portion 21, 22, at this time, the first limiting member 31 compresses the elastic member 40, and then the user releases the hand, the force of the elastic member 40 pushes against the first limiting member 31, The coupling member 30 is displaced back to the first position. It should be noted that, in this embodiment, the outer diameter of the rod portion 32 is smaller than the minimum outer diameter of the engaging portion 33. Therefore, when the coupling member 30 is in the second position, the rod portion 32 does not affect the head portion 20. In other embodiments, the outer diameter of the rod portion 32 can also be equal to the minimum outer diameter of the engaging portion 33 and has a round rod shape, which also does not affect the rotation of the head portion 20, and can achieve the head. 20 stable rotation without a slight loosening effect during the rotation.

Referring to FIG. 6 to FIG. 8 , in another embodiment of the present invention, the second limiting member 34 is not integrally formed on the second end portion, and the second limiting member 34 is different from the preferred embodiment. A ring is disposed on the outer periphery of the second end portion. The second limiting member 34 is detachably disposed on the ring groove 35. The handle 10 is provided with a sink away from the side of the head portion 20. a hole 12, the counterbore 12 is connected to the shaft hole 11. When the coupling member 30 is in the first position, the second limiting member 34 is located in the counterbore 12, and the second end portion is completely buried in the hole 12 The counterbore 12 does not protrude from the counterbore 12 as shown in FIG. When the coupling member 30 is in the second position, the second limiting member 34 is away from the counterbore 12 as shown in FIG.

Thereby, the wrench of the present invention can be fixed to the second position by moving the coupling member 30 along the through hole 23 of the head 20 and the axial hole 11 of the handle 10 to the second position, so that the head 20 is fixed to The handle 10 can drive the workpiece to rotate. After the user releases the hand, the coupling member 30 is automatically pushed back to the first position by the pushing of the elastic member 40, so that the head 20 can be positive and negative relative to the handle 10. Turning to achieve the purpose of alternately using the first and second driving portions 21 and 22 of the head 20, the operation mode is very simple and labor-saving, so that the structure of the wrench of the present invention can be more compact and easy to assemble, thereby effectively reducing manufacturing and The cost of assembly.

Secondly, the second limiting member 34 is mainly used to prevent the coupling member 30 from being pushed out of the through hole 23 and the shaft hole 11 after being pushed by the elastic member 40.

Furthermore, the user can correctly determine the head 20 from the position of the binding member 30. It is fixed with the handle 10 or can be positive and reverse with respect to the handle 10, improving the problem that the prior art needs to operate by feeling.

In addition, the driving directions of the first driving portion 21 and the second driving portion 22 do not change with the rotation of the head portion 20, and the prior art is improved to allow the user to access the first and second driving portions 21, 22 The problem of confusion in the driving direction occurs after alternate use.

Moreover, the present invention can also provide a plurality of shaft holes 11 in the handle 10, and a plurality of head portions 20, a coupling member 30 and an elastic member 40, as shown in FIG. 4, whereby the present invention has a plurality of The wrenches of the first and second driving portions 21 and 22 for different purposes.

10‧‧‧Handle

11‧‧‧Axis hole

20‧‧‧ head

21‧‧‧First Drive Department

22‧‧‧Second drive department

30‧‧‧Connected parts

31‧‧‧First limiter

40‧‧‧Flexible parts

Claims (8)

A wrench includes: a handle that defines a shaft hole; a head portion including a first driving portion and a second driving portion, the head opening a consistent hole, the through hole being located at the first and second driving portions a coupling member movably disposed on the through hole and the shaft hole, the coupling member includes a first limiting member and an engaging portion; an elastic member having one end abutting against the first limiting member, and Ending against one of the head and the handle; wherein the coupling member is movable between a first position and a second position along the axial direction of the through hole and the shaft hole, when the combination When the component is in the first position, the engaging portion is simultaneously engaged with the shaft hole and the through hole, so that the head is fixed to the handle, and when the coupling member is in the second position, the engaging portion is at least far from the through hole and One of the shaft holes rotates the head relative to the handle about an axis. At this time, the first limiting member compresses the elastic member to move the coupling member normally in the first position. The wrench of claim 1, wherein the coupling member comprises a rod portion, the rod portion is located between the first limiting member and the engaging portion, and the elastic member is sleeved on the rod portion of the coupling member. The wrench of claim 2, wherein the outer diameter of the stem portion is not greater than a minimum outer diameter of the engaging portion. The wrench of claim 3, wherein the outer diameter of the rod portion is equal to the minimum outer diameter of the engaging portion and is in the shape of a round rod. The wrench of claim 1, wherein the engaging portion is located away from the second position The through hole and one of the shaft holes are still engaged with the other. The wrench of claim 1, wherein the coupling member comprises a first end portion and a second end portion, the first end portion forming the first limiting member, and the second end portion forming a second limit portion And the second limiting member abuts against one of the handle and the head when the binding member is in the first position. The wrench of claim 1, wherein the coupling member comprises a first end portion and a second end portion, the first end portion forming the first limiting member, and the outer end of the second end portion is provided with a ring a slot, a second limiting member is detachably disposed in the ring groove, and the one of the handle and the head is provided with a counterbore on a side away from the other, and when the coupling member is in the first position, the The second limiting member is located at the counterbore, and the second limiting member is away from the counterbore when the coupling member is in the second position. The wrench of claim 7, wherein the second limiting member is a buckle.