TWI838170B - Multi-angle wrench structure - Google Patents

Abstract

A multi-angle wrench structure includes: a wrench handle body, a working head and a latch unit. The wrench body is provided with a first pivot ear and a second pivot ear at one end thereof, and a pivot space is formed between the first and second pivot ears. The first and second pivot ears are provided with an axis hole and a latch hole. The working head is movably bolted to the pivot by a third pivot ear and an axis bolt. The third hinge has an arc-shaped latch portion at its end edge; the latch unit is accommodated in the latch hole and has an elastic member and a control button. The outer diameter of the control button is concavely provided with an idle section and a latch section facing the hinge space, and a limit wall is formed near the latch section. The angle adjustment and positioning of the working head are further controlled by pressing the control button.

Description

Multi-angle wrench structure

The present invention relates to a ratchet wrench, in particular to a wrench structure capable of adjusting multiple angles.

According to the prior art, a ratchet wrench with interchangeable angles is known, such as the "multi-angle wrench" of the domestic patent publication No. I791387, which comprises: a first rod, the first rod is provided with a first hinge, the first hinge is provided with a first hinge hole along the axial direction of a virtual hinge shaft; a second rod, the second rod is provided with a second hinge and a third hinge, the first hinge is provided between the second hinge and the third hinge, the second hinge is provided with a second hinge hole, the inner periphery of the second hinge is provided with a first latching portion and a limiting groove, and a limiting member is provided in the limiting groove, the The third hinge is provided with a third hinge hole; a hinge shaft, which can be inserted into the first hinge hole, the second hinge hole and the third hinge hole movably between the locking position and the pivot position along the axis of the hinge shaft, and the outer periphery of the hinge shaft is provided with a second latch portion, a first positioning groove and a second positioning groove. When the hinge is in the locking position, the second latch portion is connected to the first latch portion, the limiter is buckled in the first positioning groove, and the first rod and the second rod cannot pivot relative to each other. When the hinge is in the pivot position, the limiter is buckled in the second positioning groove, and the first rod and the second rod can pivot relative to each other.

A detailed look at the above-mentioned known structure shows that it still has some shortcomings. The main reasons are as follows: the first rod and the second rod of the known multi-angle wrench are in a relative pivot state with the pivot as the axis, and the second latch part of the pivot is matched and positioned with the first latch part of the second rod. When locking through the pivot, the second latch part on the outer periphery needs to be completely matched and contacted with the first latch part on the inner periphery of the second pivot hole, resulting in extremely high precision requirements between the first and second latch parts, otherwise interference is likely to occur, causing locking problems, and also increasing the cost of structural components.

Furthermore, when the first and second rods reach the pivoting and locking states through the pivot, the pivot is positioned by the first and second positioning grooves and the limiting piece of the second rod in the limiting groove, so that the pivot needs to be repeatedly pressed to move when pivoting and locking, which is not only troublesome and uncertain, but also requires confirmation again whether the pivot has been firmly locked, causing inconvenience in use. On the other hand, the limiting piece is similar to a flexible C-shaped fastener. Under extremely complicated pressing and cutting control, the first and second positioning grooves or the limiting piece are easily damaged due to friction, which results in the pivot being unable to be firmly locked and positioned with the limiting piece, seriously affecting the practicality and durability of the wrench.

In view of this, the inventor has been engaged in the manufacturing, development and design of related products for many years. After careful design and careful evaluation for the above-mentioned goals, he finally obtained this invention which is truly practical.

The technical problem that this invention aims to solve is to provide a multi-angle wrench structure with simple structure and quick positioning in view of the above-mentioned deficiencies of the existing technology.

The structure is a multi-angle wrench structure, including: a wrench handle body, a working head and a latch unit, one end of the wrench body is provided with a first pivot and a second pivot symmetrically, and a pivot space is formed between the first and second pivots, the first and second pivots are penetrated through a central position to set an axis hole and communicate with the pivot space, the first and second pivots are further provided with a detent hole below the axis hole to communicate with the pivot space, and the detent hole does not penetrate the second pivot to form a blocking wall; the working head has a working part and a third pivot, the third pivot is penetrated through an axis hole set on both sides, and is matched with an axis bolt to connect the third pivot The swingable ground bolt is arranged in the pivot space, and the end edge of the third pivot ear is provided with a circular arc-shaped latching part with the axial hole as the center, and the latching part is provided with a plurality of latching teeth at equal intervals; the latching unit is installed in the latching holes of the first and second pivot ears, and has an elastic member and a cutting control button. The outer diameter of the cutting control button is concavely provided with an idle section and a latching section facing the pivot space, and a limiting wall is formed near the latching section. The latching section is provided with a plurality of latching teeth at equal intervals and is higher than the idle section. The elastic member is between the blocking wall and one end of the cutting control button, and the angle adjustment and positioning of the working head are further controlled by whether the cutting control button is pressed or not.

Preferably, the shaft hole of the second hinge is provided with an internal thread section, one end of the shaft bolt forms a stopper, and the other end is provided with an external thread section, thereby locking the shaft bolt in the shaft hole.

Preferably, the thickness of the second hinge is greater than that of the first hinge, so that the detent hole inside the second hinge has a suitable depth for accommodating the elastic member, and at least one-half of the detent hole is lower than the hinge space.

Preferably, the upper ends of the first and second hinges are formed into an arc end with the shaft hole as the center, and the bottom of the hinge space is a plane, so that the working head has a rotation angle of at least 180 degrees.

Preferably, the latching section and the idle section of the cutting control button are both formed into a concave arc shape, and the end edge of the latching tooth of the latching section is provided with a guiding inclined portion toward the idle section.

Preferably, the working head is a ratchet working head.

Compared with the effect of the prior art: when the working head of the present invention is engaged and locked with the wrench handle body, the concave arc-shaped latch section of the cutting control button and the arc-shaped latch portion of the third hinge are engaged and positioned with each other, effectively reducing the engagement contact area between the structures, which can not only avoid interference and cause the situation that the engagement positioning cannot be ensured, but also reduce the accuracy requirements and help reduce the structural cost, and have both the simplification of the structural composition and the substantial effect of ensuring the engagement positioning.

When adjusting the working head of the present invention, pressing the cutting control button can disengage the latch section from the latch part of the third hinge to allow the working head to be swiveled and adjusted. When the cutting control button is released, the elastic member rebounds and pushes the cutting control button, so that the cutting control button can be quickly reset and the latch section is engaged with the latch part to position the working head, so that the angle adjustment and positioning of the working head are clearer and easier to use, and the practicality and durability are improved.

10: Trigger handle body

11: The First Ear

111: Arc end

12: The Second Ring

121: Arc end

13: Central space

14: Axle hole

141: Internal thread section

15: Driving hole

151:Block

20: Working head

21: Work Department

22: The Third Ring

221: Axis hole

222: Clamping part

223: Clamping teeth

23: Axle bolt

231: Stopper

232: External thread section

30: latch unit

31: Elastic parts

32: Cut control button

321: Idle section

322: latch section

323: Limiting wall

324: Teeth

325: Guide bevel

[Figure 1] is a three-dimensional diagram of the present invention.

[Figure 2] is an exploded view of the present invention.

[Figure 3] is a cross-sectional view of the gear engagement positioning state of the present invention.

[Figure 4] is a cross-sectional view from another angle of the gear engagement positioning state of the present invention.

[Figure 5] is a cross-sectional view of the idling pendulum state of the present invention.

[Figure 6] is another perspective cross-sectional view and partial enlarged schematic diagram of the idling pendulum state of the present invention.

[Figure 7] is a schematic diagram of the working head of the present invention swinging left and right.

[Figure 8] is a cross-sectional view of the cutting control button of the present invention in the engagement and positioning state formed by the elastic member rebounding and returning to its original position.

[Figure 9] is a cross-sectional view of the working head of the present invention for swing adjustment and gearing positioning.

[Figure 10] is a schematic diagram of the working head of the present invention for swing adjustment and gear positioning.

In order to enable the review committee to have a deeper understanding and knowledge of the purpose, features and effects of this invention, please refer to the [Simple Diagram Description] for details as follows:

First, please refer to the first and second figures, which show a multi-angle wrench structure, including: a wrench handle body 10, one end of which is provided with a first pivot ear 11 and a second pivot ear 12 which are symmetrical, and a pivot space 13 is formed between the first and second pivot ears 11 and 12, the bottom of the pivot space 13 is a plane, the first and second pivot ears 11 and 12 are provided with an axial hole 14 at the center position to communicate with the pivot space 13, and the axial hole 14 of the second pivot ear 12 is provided with an internal thread section 141, and the upper ends of the first and second pivot ears 11 and 12 are centered on the axial hole 14. The first and second hinges 11 and 12 are provided with a detent hole 15 below the shaft hole 14 to communicate with the hinge space 13, and the detent hole 15 does not penetrate the second hinge 12 to form a blocking wall 151, and the thickness of the second hinge 12 is greater than that of the first hinge 11, so that the detent hole 15 has a proper depth inside the second hinge 12, and at least one-half of the detent hole 15 is lower than the hinge space 13; a working head 20, having a working portion 21 and a third hinge 22, the third hinge 22 penetrates the shaft hole 14 on both sides. The third pivot ear 22 is provided with a hole 221, and a shaft bolt 23 is used to movably bolt the third pivot ear 22 in the pivot space 13, and the end edge of the third pivot ear 22 is provided with a circular arc-shaped latch portion 222 with the shaft hole 221 as the center, and the latch portion 222 is provided with a plurality of latch teeth 223 at equal intervals, and a stopper portion 231 is formed at one end of the shaft bolt 23, and an external threaded section 232 is provided at the other end, thereby locking the shaft bolt 23 in the shaft hole 14; a latch unit 30 is installed in the latching holes 15 of the first and second pivot ears 11 and 12, and has an elastic member 31 and all control buttons 32, the outer diameter of the cutting control button 32 is facing the pivot space 13 and is provided with an idle section 321 and a latch section 322 which are both connected and in a concave arc shape, and a limiting wall 323 is formed near the latch section 322. The latch section 322 is provided with a plurality of latch teeth 324 at equal intervals and is higher than the idle section 321, and the end edge of the latch teeth 324 is provided with a guiding inclined portion 325 toward the idle section 321. The elastic member 31 is between the baffle wall 151 and one end of the cutting control button 32, and further controls the angle adjustment and positioning of the working head 20 by pressing the cutting control button 32 or not.

The working head 20 mentioned above may be a ratchet working head.

The structure is shown in FIGS. 1, 2, 3 and 4. The elastic member 31 and the control button 32 of the latch unit 30 are sequentially assembled into the detent hole 15. The elastic member 31 is accommodated in the detent hole 15 of the second hinge 12. The control button 32 places the limiting wall 323 inwardly into the detent hole 15, further limiting the elastic member 31 to the limiting position. The wall 323 and the blocking wall 151 are interposed between the idle section 321 and the latch section 322 of the cutting control button 32, and the third hinge 22 of the working head 20 is assembled into the hinge space 13 between the first and second hinges 11 and 12, and the axial hole 221 is aligned with the axial hole 14, and the latch section 222 of the third hinge 22 is connected to the hinge space 13. The cut control button 32 is adjacent to the bottom of the hinge space 13 and is pre-embedded in the latch section 322 of the cut control button 32, and is connected to each other by the latch teeth 223 and the latch teeth 324. The cut control button 32 is further pushed outward by the elastic member 31 to close the limiting wall 323 to the side of the third hinge 22, and then the third hinge 22 is used to limit the position of the cut control button 32 to avoid the cut control button 32 from being locked. The control button 32 pops out of the detent hole 15, and the control button 32 is normally fitted to restrict the third hinge 22. Finally, the shaft bolt 23 is screwed through the shaft hole 14 and the axial hole 221, so that the working head 20 can have a swing angle of at least 180 degrees in the hinge space 13 with the shaft bolt 23 as the axis, thereby forming a multi-angle wrench structure.

The actual use state of the structure is shown in Figures 3 to 7. When the cutting control button 32 of the latch unit 30 is not pressed, the latching teeth 324 of the latching section 322 are normally engaged to limit the third hinge 22 to the latching teeth 223 of the latching portion 222, further limiting the angle of the working head 20 on the wrench body 10 for the user to twist and loosen the workpiece. When the use angle of the working head 20 is to be adjusted, the cutting control button 32 is first pressed to retract it and compress the elastic member 31, and the latching section 322 of the cutting control button 32 is retracted into the detent hole 15 of the second hinge 12, and at the same time, the idle section 321 is displaced to face the hinge. Space 13, at this time, the latching teeth 223 of the latching portion 222 can be disengaged from the engagement positioning of the latching teeth 324, and the third hinge 22 can be provided with a free swinging motion through the idle section 321, thereby the angle of the working head 20 to be used can be adjusted by swinging. After the angle is adjusted, please refer to Figures 8, 9, and 10, and then release the cutting control button 32 and push and return to the position with the rebound of the elastic member 31, so that the latching section 322 returns to the state of communicating with the hinge space 13, and then the latching teeth 223 of the third hinge 22 are engaged and fixed with the latching teeth 324, so as to achieve the purpose of adjusting the angle and positioning of the working head 20.

In addition, when the cut control button 32 is pushed back by the elastic member 31, the edge of the latching tooth 324 of the latching section 322 is formed with a guiding inclined portion 325 toward the idle section 321, as shown in Figures 5 and 8, which effectively avoids interference between the latching tooth 324 and the latching tooth 223, so that the latching tooth 324 can be smoothly and quickly introduced into the latching tooth 223, and the effect of meshing positioning is indeed achieved.

The structure of the above-mentioned specific embodiment can obtain the following benefits: when the working head 20 of the present invention is engaged and locked with the wrench body 10, the concave arc-shaped latch section 322 of the cutting control button 32 and the arc-shaped latch section 222 of the third hinge 22 are engaged and positioned with each other, effectively reducing the engagement contact area between the structures, which can not only avoid interference and cause the situation that the engagement positioning cannot be ensured, but also reduce the precision requirements and help reduce the structural cost, and have both the simplification of the structural composition and the substantial effect of ensuring the engagement positioning.

When adjusting the working head 20 of the present invention, pressing the cut control button 32 can disengage the latch section 322 from the latch portion 222 of the third hinge 22 to allow the working head 20 to be swiveled and adjusted. When the cut control button 32 is released, the elastic member 31 rebounds and pushes the cut control button 32 to quickly reset the latch section 322 to engage and position the latch portion 222, so that the angle adjustment and positioning of the working head 20 are clearer and easier to use, and the practicality and durability are improved.

In summary, this invention has indeed achieved a breakthrough structural design and has improved invention content. At the same time, it can achieve industrial applicability and progress. Moreover, this invention has not been seen in any publication and is also novel. It should comply with the relevant provisions of the Patent Law. Therefore, we have filed an invention patent application in accordance with the law and pleaded with the Jun Bureau Review Committee to grant legal patent rights. We are very grateful.

However, the above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention; that is, all equivalent changes and modifications made according to the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention.

10: Trigger handle body

11: The First Ear

111: Arc end

12: The Second Ring

121: Arc end

13: Central space

14: Axle hole

141: Internal thread section

15: Driving hole

151:Block

20: Working head

21: Work Department

22: The Third Ring

221: Axis hole

222: Clamping part

223: Clamping teeth

23: Axle bolt

231: Stopper

232: External thread section

30: latch unit

31: Elastic parts

32: Cut control button

321: Idle section

322: latch section

323: Limiting wall

324: Teeth

325: Guide bevel

Claims (5)

A multi-angle wrench structure includes: a wrench handle body, one end of which is provided with a first pivot ear and a second pivot ear that are symmetrical to each other, and a pivot space is formed between the first and second pivot ears, the first and second pivot ears are provided with an axial hole through the center position to communicate with the pivot space, the first and second pivot ears are further provided with a detent hole below the axial hole to communicate with the pivot space, and the detent hole does not penetrate the second pivot ear to form a blocking wall; a working head, having a working part and a third pivot ear, the third pivot ear is provided with an axial hole through the two sides, and is equipped with an axial bolt to movably bolt the third pivot ear in the pivot space, and the end edge of the third pivot ear is fixed with the axial hole. A circular arc-shaped latching part is provided at the center, and the latching part is provided with a plurality of latching teeth at equal intervals; a latching unit is installed in the latching holes of the first and second hinges, and has an elastic member and a control button. The outer diameter of the control button is provided with an idle section and a latching section that are both connected and concave arc-shaped facing the hinge space, and a limiting wall is formed near the latching section. The latching section is provided with a plurality of latching teeth at equal intervals and is higher than the idle section, and the end edge of the latching teeth of the latching section is provided with a guiding inclined portion toward the idle section. The elastic member is between the baffle wall and one end of the control button, and the angle adjustment and positioning of the working head are further controlled by whether the control button is pressed or not. The multi-angle wrench structure as described in claim 1, wherein the shaft hole of the second hinge is provided with an internal threaded section, one end of the shaft bolt forms a stopper, and the other end is provided with an external threaded section, thereby locking the shaft bolt in the shaft hole. The multi-angle wrench structure as described in claim 1, wherein the thickness of the second hinge is greater than that of the first hinge, so that the detent hole inside the second hinge has a suitable depth for accommodating the elastic member, and at least one-half of the detent hole is lower than the hinge space. As described in claim 1, the multi-angle wrench structure, wherein the upper ends of the first and second hinges are formed into an arc end with the shaft hole as the center, and the bottom of the hinge space is a plane, so that the working head has a swing angle of at least 180 degrees. The multi-angle wrench structure as described in claim 1, wherein the working head is a ratchet working head.

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