TWI637820B - Wrench with stop - Google Patents

Abstract

The wrench with the stopping device comprises a body and a stopping member, the body comprises a driving head, the driving head is provided with a driving hole, the stopping member is connected to the body, the stopping member has a connecting portion and a stop The blocking portion is provided with an elastic portion between the connecting portion and the stopping portion, the connecting portion is fixedly connected to the driving head, and the elastic portion comprises a first curved portion and a second curved portion, the first curved portion and the second curved portion The bending direction of the segment is different, the stopping portion is movable relative to the body between the first position and the second position, and the elastic portion is used to keep the stopping portion in the first position when the external force is not applied, and the stopping portion is in the first position In one position, the stop portion can jam or stop the work object, and when the stop portion is in the second position, the stop portion is disengaged from the work object, and the wrench can effectively limit the position of the work object by the above structure.

Description

Wrench with stop

The invention mainly discloses a wrench, in particular a wrench with a stop device.

Please refer to the "Improved Structure of Penetrating Ratchet Wrench" patent of No. M476030 of the Chinese Patent No. M476030, which discloses an improved structure of a penetrating ratchet wrench having a wrench body and having a head at the front end of the wrench body a ratchet wheel is disposed in the head, and the ratchet wheel is provided with a polygonal sleeve hole, and the sleeve hole is used for sleeved a sleeve, and the upper edge of the ratchet wheel is provided with a first a ring groove is formed on the outer peripheral wall of the first neck portion, and the ratchet has a plurality of perforations in the ring groove, and a C-shaped buckle is further fastened in the ring groove, and the through holes can be The C-shaped buckle protrudes to form a limiting portion, and the limiting portion is configured to elastically stop the sleeve, thereby limiting the socket hole of the ratchet during operation of the user A displacement occurs on the sleeve.

However, in the production of the wrench of the above structure, the ring groove must be machined on the outer peripheral wall of the first neck of the upper edge of the ratchet. The inner side of the ratchet must have a polygonal hole shape and the outer side must have an annular tooth portion to provide the ratchet wheel. The utility model has the effect of reworking the ring groove in the ratchet, so that the structure of the ratchet is more and more complicated, and it is more and more difficult to process, which makes the production of the wrench more difficult and increases the cost of manufacturing.

Moreover, the way the wrench limits the position of the sleeve depends on the elastic force of the C-shaped buckle itself. When the user uses the sleeve or replaces the sleeve of other sizes, the sleeve must be held and then directly The sleeve is unplugged from the wrench, but the sleeve is likely to be contaminated with oil during use. If the coefficient of elasticity of the C-ring is too large, the user may suffer from difficulty in pulling the sleeve due to insufficient friction. Conversely, if the elastic force of the C-shaped buckle is too small, the sleeve will easily fall off during use.

In view of the above-described deficiencies of the prior art, the inventors have devised to design a wrench having a stop device that overcomes all of the disadvantages of the prior art described above.

The main purpose of the present invention is to provide a wrench comprising a stop device, the wrench comprising a body and a stop member, the body comprising a handle and a drive head, the drive head being coupled to one end of the handle, the drive The front side of the head is disposed on a side of the axial direction of the virtual rotating shaft, and a back surface is disposed on a side opposite to the front surface. The driving body is provided with a driving hole along the axial direction of the virtual rotating shaft. Connecting the front surface and the back surface through the driving head, the body can be sleeved with the driving hole and the working object is rotated about the virtual rotating shaft, the stopping member is connected to the body, and the stopping member has a connecting portion and a stopping portion, and an elastic portion is disposed between the connecting portion and the stopping portion, the connecting portion is fixedly connected to the driving head, and the elastic portion extends on a virtual reference surface, the virtual reference The surface is perpendicular to the virtual rotating shaft, the elastic portion includes a first curved portion and a second curved portion, and the center of curvature of the first curved portion and the center of curvature of the second curved portion are respectively The stop portion is movable relative to the body between the first position and the second position on the opposite sides of the elastic portion, and the retaining portion is maintained in the first portion by the elasticity of the elastic portion. a position, when the stopping portion is in the first position, the stopping portion can chuck or stop the working object entering the driving hole, and the stopping portion is along the virtual rotating shaft diameter when the stopping portion is in the second position Moving forward and away from the drive hole The work tool can effectively limit the position of the work object by the above structure, avoiding the slip of the work object relative to the wrench, and the design of the spring rebound through the stop portion makes the wrench very convenient to operate.

The stopper forms an integrally formed structure, and the cross-sectional area of the elastic portion in the lateral direction is smaller than the cross-sectional area of the connecting portion in the lateral direction and the cross-sectional area of the stopper in the lateral direction.

The stopper is integrally formed by bending a metal piece.

The average radius of curvature of the first curved section is set to a first radius, and the average radius of curvature of the first curved section is set to a second radius, and the second radius is greater than the first radius.

The second radius is 1.5 times or more to 2 times or less of the first radius.

a center of curvature of the first curved portion is located on a side of the elastic portion adjacent to the driving hole, a center of curvature of the second curved portion is located at a side of the elastic portion different from the driving hole, and the second curved portion is located at the first A curved section is adjacent to one side of the stop.

The stopper is disposed on the back surface of the driving head, and the connecting portion is fixedly connected to the back surface of the driving head. The body is provided with a limiting slot on the back surface, and the limiting slot is radially different from the virtual rotating shaft. A limiting portion is disposed on a side of the driving hole, and a limiting flange is disposed on a side of the stopping portion adjacent to the back surface, and the limiting flange is movably disposed in the limiting slot relative to the body. When the stopping portion is in the second position, the limiting flange abuts against the limiting portion.

The main body is provided with a back cover on the back surface. The back cover is fixedly connected to the back surface through a first locking member and a second locking member. The first locking member and the second locking member are respectively parallel to the virtual rotating shaft. Extending in a direction, the first locking member is disposed on a back surface of the driving head, the first locking member passes through the back cover and is fixedly coupled to the driving head by insertion, and the second locking member is disposed on the driving head The second locking member sequentially passes through the back cover and the stopper and is fixedly coupled to the driving head in an inserting manner, so that the stopping member is located between the driving head and the back cover.

The stopping member is disposed on a side of the stopping portion adjacent to the driving hole with a guiding inclined surface facing the front surface of the driving head, and the guiding surface is not parallel or perpendicular to the virtual rotating shaft.

The stopping member is provided with a sliding portion extending from the stopping portion, and the sliding portion extends in a direction parallel to the axial direction of the virtual rotating shaft to be different from the body, and the dialing portion is located at the stopping portion Different from the side of the drive hole.

The body also has a ratchet ring disposed between the front and the back of the driving head, and the ratchet ring is disposed around the driving hole, and the ratchet ring is rotatable relative to the driving head with the virtual rotating shaft as an axis .

Other objects, advantages and novel features of the invention will become apparent from the description and appended claims.

10‧‧‧Wrench

20‧‧‧ body

21‧‧‧handle

22‧‧‧Drive head

221‧‧‧ positive

222‧‧‧ back

23‧‧‧ drive hole

24‧‧‧Limited slot

241‧‧‧Limited

25‧‧‧Back cover

26‧‧‧First lock

27‧‧‧Second lock

28‧‧‧ ratchet ring

30‧‧‧stops

31‧‧‧Connecting Department

32‧‧‧stop

321‧‧‧Limited flange

33‧‧‧Flexible Department

331‧‧‧First bend

332‧‧‧second curved section

34‧‧‧ Guided slope

35‧‧‧The Ministry of Movement

90‧‧‧Works

91‧‧‧Chamfering

92‧‧‧ card slot

L‧‧‧Virtual shaft

P‧‧‧virtual datum

R1‧‧‧ first radius

R2‧‧‧ second radius

Figure 1 is a perspective view of a wrench having a stop device of the present invention.

2 is an exploded perspective view of a wrench having a stop device of the present invention.

Figure 3 is a cross-sectional structural view of a wrench having a stop device of the present invention.

Figure 4 is a partially enlarged cross-sectional structural view of the wrench with the stop device of the present invention.

Figure 5 is a cross-sectional structural view showing the wrench stopper having the stopper device in the first position of the present invention.

Figure 6 is a cross-sectional structural view showing the wrench stopper having the stopper device in the second position of the present invention.

Figure 7 is a cross-sectional structural view showing another view of the wrench stopper having the stopper device in the second position of the present invention.

The technology, means and functions of the present invention are described in detail with reference to the accompanying drawings.

Please refer to FIG. 1 to FIG. 5 , which are a perspective view, an exploded perspective view and a cross-sectional structural view of a wrench having a stop device according to the present invention. The wrench 10 of the present invention includes a body 20 and a stopper 30; wherein:

The body 20 includes a handle 21 and a driving head 22. The driving head 22 is connected to one end of the handle 21. The driving head 22 is provided with a front surface 221 along one side of the virtual rotating shaft L and opposite thereto. A driving surface 23 is disposed on a side of the front surface 221 , and a driving hole 23 is disposed in the axial direction of the virtual rotating shaft L. The driving hole 23 extends through the driving head 22 to communicate the front surface 221 and the back surface 222 . The body 20 can sleeve the workpiece 90 with the driving hole 23 and drive the workpiece 90 to rotate about the virtual axis L.

The body 20 is provided with a limiting slot 24 on the back surface 222. The limiting slot 24 is provided with a limiting portion 241 along a side of the virtual rotating shaft L that is different from the driving hole 23 in the radial direction.

The back surface 222 of the body 20 is provided with a back cover 25 fixedly coupled to the back surface 222 via a first locking member 26 and a second locking member 27, the first locking member 26 and the second locking member The second locking member 26 is disposed on the back surface 222 of the driving head 22, and the first locking member 26 passes through the back cover 25 and is fixedly connected to the insertion portion. The drive head 22.

The body 20 further has a ratchet ring 28 disposed between the front surface 221 and the back surface 222 of the driving head 22 and the ratchet ring 28 is disposed around the driving hole 23, and the ratchet ring 28 can be virtualized The rotation axis L is an axis that rotates relative to the drive head 22.

The stopper 30 is connected to the body 20, and the stopper 30 is disposed on the back surface 222 of the driving head 22 in the embodiment. The stopper 30 has a connecting portion 31 and a stopping portion 32. An elastic portion 33 is disposed between the connecting portion 31 and the stopping portion 32. The connecting portion 31 is fixedly connected to the back surface 222 of the driving head 22. The second locking member 27 is disposed on the back surface 222 of the driving head 22. The second locking member 27 passes through the back cover 25 and the stopper 30 in sequence and is fixedly coupled to the driving head 22 in an inserting manner, so that the stopping member 30 is located between the driving head 22 and the back cover 25. The stopper member 30 is integrally bent from a metal sheet body and formed into an integrally formed structure. The cross-sectional area of the elastic portion 33 in the lateral direction is smaller than the cross-sectional area of the connecting portion 31 in the lateral direction and the cross-sectional area of the stopper portion 32 in the lateral direction. .

The guiding member 30 is disposed on a side of the stopping portion 32 adjacent to the driving hole 23 with a guiding inclined surface 34 facing the front surface 221 of the driving head 22, and the guiding surface 34 is not parallel. The virtual axis L is not perpendicular. The stopper member 30 is provided with a dial portion 35 extending from the stopping portion 32. The dial portion 35 extends in a direction parallel to the axial direction of the virtual rotating shaft L to be different from the body 20, and the shifting portion The portion 35 is located on a side of the stop portion 32 that is different from the drive hole 23 . A limiting flange 321 is disposed on a side of the stopping portion 32 adjacent to the back surface 222 . The limiting flange 321 can be disposed in the limiting slot 24 relative to the body 20 .

The elastic portion 33 extends on a virtual reference plane P that is perpendicular to the virtual axis L. The elastic portion 33 includes a first curved section 331 and a second curved section 332. The first curved section 331 The center of curvature of the second curved portion 332 is located on opposite sides of the elastic portion 33, and the center of curvature of the first curved portion 331 is located on a side of the elastic portion 33 adjacent to the driving hole 23, the first The center of curvature of the two curved sections 332 is located on a side of the elastic portion 33 that is different from the driving hole 23. The second curved section 332 is located on a side of the first curved section 331 adjacent to the stopping portion 32. The average radius of curvature of the first curved section 331 is set to a first radius R1, and the average curvature of the second curved section 332 is Radius is set to one The second radius R2 is greater than the first radius R1, and the second radius R2 is 1.5 times or more and 2 times or less of the first radius R1 in this embodiment.

Please refer to FIG. 6 and FIG. 7 for a cross-sectional structural view of the wrench stopper having the stopper device in the second position. The stop portion 32 is movable relative to the body 20 between the first position and the second position, and the stop portion 32 is held in the first position when the external force is not applied by the elasticity of the elastic portion 33, the stop When the portion 32 is in the first position, the stopping portion 32 can lock or stop the workpiece 90 entering the driving hole 23. When the stopping portion 32 is in the second position, the stopping portion 32 is along the virtual rotating shaft L. The radial direction moves away from the driving hole 23 and is separated from the working object 90 , and the limiting flange 321 abuts against the limiting portion 241 .

In the embodiment, the workpiece 90 is a sleeve. When the workpiece 10 is turned by the wrench 10, the workpiece 90 can be placed into the driving hole 23 from the front surface 221 when the workpiece 90 is chamfered 91. When the guide inclined surface 34 is touched, the workpiece 90 must be continuously pushed to force the stop portion 32 of the stopper 30 to slide along the chamfering surface of the workpiece 90 and move to the first stage. In the two positions, until the stopping portion 32 is aligned with the slot 92 of the workpiece 90, the stopping portion 32 can rebound to the first position and snap into the slot 92 of the workpiece 90, so that the workpiece 90 cannot be disengaged from the wrench. 10. The wrench 10 can effectively limit the position of the workpiece 90 by the above structure, avoiding the slip of the workpiece 90 relative to the wrench 10, which is beneficial to the turning operation, and the design of the stop portion 32 is automatically rebounded, so that the wrench 10 is very Easy to operate. When the work item 90 is to be withdrawn, the user can toggle the toggle portion 35 to move the stop portion 32 to the second position and disengage from the work item 90. The elastic portion 33 can exhibit excellent elasticity by the design of the above shape, and the user can effectively push the stopper portion 32 into the slot 92 of the workpiece 90, and the resistance of the user is not too large. And it is not easy to break. At the same time, when the stopping portion 32 is in the second position, the limiting flange 321 abuts against the design of the limiting portion 241, thereby effectively preventing the user from excessively deforming due to excessive force applied.

The wrench 10 can also be used to turn a screw or a nut. When the screw or the nut enters the driving hole 23, the screw or the nut may be blocked by the stopping portion 32 because the chamfering of the screw or the nut is small or even chamfered. It cannot be withdrawn from the back side 222, and the user can easily and quickly turn the screw or nut (not shown).

As far as the above is concerned, it can be concluded that the present invention has the following advantages:

1. A wrench having a stop device according to the present invention, wherein the wrench includes a body and a stopper, the body includes a handle and a driving head, the driving head is coupled to one end of the handle, the driving head is along a One side of the axial direction of the virtual rotating shaft is provided with a front surface, and a side opposite to the front surface is provided with a back surface. The driving body is provided with a driving hole along the axial direction of the virtual rotating shaft, and the driving hole penetrates the driving hole. The front surface communicates with the front surface and the back surface, the body can be sleeved with the driving hole and the working object is rotated about the virtual rotating shaft, the stopping member is connected to the body, and the stopping member has a connecting portion And a stopping portion, and an elastic portion is disposed between the connecting portion and the stopping portion, the connecting portion is fixedly connected to the driving head, and the elastic portion extends on a virtual reference surface, the virtual reference surface is perpendicular to the a virtual rotating shaft, the elastic portion includes a first curved portion and a second curved portion, and a center of curvature of the first curved portion and a center of curvature of the second curved portion are respectively different in the elastic portion On both sides, the stopping portion is movable relative to the body between the first position and the second position, and the elastic portion is used to maintain the stopping portion in the first position when the external force is not applied, the stopping portion In the first position, the stopping portion can chuck or stop the workpiece entering the driving hole. When the stopping portion is in the second position, the stopping portion is radially away from the driving hole along the virtual rotating shaft. By moving and disengaging from the work object, the wrench can effectively limit the position of the work object by the above structure, avoiding the slip of the work object relative to the wrench, and the design of the spring rebound through the stop portion makes the wrench very convenient to operate.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so that the numerical value is changed or the equivalent element is replaced, or the equivalent of the scope of the patent application of the present invention. Changes and modifications are still within the scope of the invention patent.

Claims (10)

A wrench having a stop device includes: a body including a handle and a driving head, the driving head being coupled to one end of the handle, the driving head being disposed along an axial side of a virtual rotating shaft a front surface and a side opposite to the front surface is provided with a back surface. The driving head is provided with a driving hole along the axial direction of the virtual rotating shaft, and the driving hole penetrates the driving head to communicate the front surface and the back surface, and the body can The working hole is sleeved with the driving hole and the working object is rotated about the virtual rotating shaft; a stopper is connected to the body, and the stopping member has a connecting portion and a stopping portion An elastic portion is disposed between the connecting portion and the stopping portion, and the connecting portion is fixedly coupled to the driving head, and the stopping member forms an integrally formed structure, and the cross-sectional area of the elastic portion in the lateral direction is smaller than the lateral portion of the connecting portion. a cross-sectional area and a cross-sectional area of the stopping portion in a lateral direction, the elastic portion extending on a virtual reference surface, the virtual reference surface being perpendicular to the virtual rotating shaft, the elastic portion including a first a curved portion and a second curved portion, wherein a center of curvature of the first curved portion and a center of curvature of the second curved portion are respectively located on opposite sides of the elastic portion, and the stop portion is capable of being in the first position and the second position Moving relative to the body, and by the elasticity of the elastic portion, the stopping portion is maintained in the first position when the external portion is not subjected to an external force, and the stopping portion can be stuck or stopped when the stopping portion is in the first position a workpiece entering the driving hole, wherein the stopping portion moves in a direction away from the driving hole along the virtual rotating shaft in a second position and is separated from the working object. A wrench having a stop device according to claim 1, wherein the stopper is integrally formed by bending a metal sheet. The spanner with a stop device according to claim 1, wherein the average radius of curvature of the first curved section is set to a first radius, and the average radius of curvature of the second curved section is set to a second radius, the second The radius is greater than the first radius. A wrench having a stop device according to claim 3, wherein the second radius is 1.5 times or more to 2 times or less of the first radius. A wrench having a stop device according to claim 3 or 4, wherein a center of curvature of the first curved portion is located on a side of the elastic portion adjacent to the driving hole, and a center of curvature of the second curved portion is located at the elastic portion Different from the side of the driving hole, the second curved section is located at a side of the first curved section adjacent to the stopping portion. The wrench of claim 5, wherein the stopper is disposed on the back of the driving head, the connecting portion is fixedly connected to the back of the driving head, and the body is provided with a limiting slot on the back surface. The limiting slot is provided with a limiting portion along a side of the virtual rotating shaft that is different from the driving hole in the radial direction, and a limiting flange is protruded from a side of the stopping portion adjacent to the back surface, and the limiting convex portion The edge is movably disposed in the limiting slot relative to the body, and the limiting flange abuts the limiting portion when the stopping portion is in the second position. A wrench having a stop device according to claim 6, wherein the body is provided with a back cover on the back surface, and the back cover is fixedly connected to the back surface through a first locking member and a second locking member, the first The locking member and the second locking member respectively extend in a direction parallel to the axial direction of the virtual rotating shaft, the first locking member is disposed on the back surface of the driving head, the first locking member passes through the back cover and is fixedly connected to the insertion The driving head is disposed on the back surface of the driving head, and the second locking member sequentially passes through the back cover and the stopping member and is fixedly connected to the driving head by insertion, so that the stopping member Located between the drive head and the back cover. A wrench having a stop device according to claim 6, wherein the stopper is provided with a guiding slope on a side of the stopping portion adjacent to the driving hole, the guiding slope facing the front surface of the driving head, and The guiding surface is not parallel or perpendicular to the virtual axis. A wrench having a stop device according to claim 6, wherein the stopper is provided with a toggle portion extending from the stop portion, the dial portion being different in a direction parallel to the axial direction of the virtual rotary shaft The body extends in a direction, and the dial portion is located on a side of the stopping portion that is different from the driving hole. A wrench having a stop device according to claim 6, wherein the body further has a ratchet ring disposed between the front and the back of the drive head and the ratchet ring is disposed around the drive hole, The ratchet ring is rotatable relative to the drive head with the virtual axis as an axis.