Wrench angle adjusting structure

Abstract

A wrench angle adjusting structure comprises a wrench handle body, a working head and a clamping unit, a first convex lug and a second convex lug which are symmetrical are arranged at one end of the wrench handle body, a pivoting space is formed between the first convex lug and the second convex lug, and the first convex lug and the second convex lug are provided with a shaft hole and a braking hole which are parallel to each other; the working head is bolted in the pivoting space in a swinging manner by matching a pivoting lug with a shaft bolt, and an arc-shaped clamping part is arranged at the end edge of the pivoting lug; the clamping unit is contained in the braking hole and provided with an elastic piece and a switching control column, the outer diameter face of the switching control column is provided with an idling section and a clamping section in a concave mode, the idling section and the clamping section are arranged on the outer diameter face of the switching control column, a limiting wall is further formed close to the clamping section, and angle adjustment and positioning of the working head are further controlled by pressing or not pressing of the switching control column.

Description

TECHNICAL FIELD

[0001] The present application relates to a wrench, in particular to a wrench angle adjusting structure. BACKGROUND

[0002] A replaceable angle ratchet wrench is known, such as the "adjustable angle positioning head ratchet wrench" of Patent No. M305734, which is a ratchet wrench comprising a ratchet head having a positioning end, a plurality of first engaging portions, a handle body having a first and second end, and a positioning device, the first end having two ear pieces pivotally connected to the positioning end, a receiving space defined between the ear pieces, an operation hole, a communication hole communicating the receiving space and the operation hole, and a receiving hole communicating with the operation hole, the positioning device comprising an operation pin installed in the operation hole, a clamping block installed in the communication hole, a spring installed in the receiving hole, and a limiting member installed in the receiving hole, the operation pin having a recessed surface, the clamping block having a driven end and a plurality of second engaging portions, when the operation pin is moved to a locked position, the recessed surface is tightly against the driven end, forcing the first and second engaging portions to engage with each other, when the operation pin is moved to an unlocked position, the recessed surface releases the driven end, allowing the second engaging portions to release the first engaging portions.

[0003] Detailed analysis of the above-mentioned existing structure is not difficult to find that there are still some shortcomings, the main reasons are as follows: the clamping block of the existing ratchet wrench is vertically actuated between the operation pin and the positioning end of the ratchet head, although the operation pin is in the locked position, the ratchet head cannot be rotated under normal circumstances, but if the user drives the ratchet head to rotate in an improper way, the vertically stressed clamping block is easy to be broken due to excessive shear force; in addition, the operation pin may be deformed and damaged by the vertically stressed clamping block, thereby causing the positioning device to be unable to positively engage and position the ratchet head, seriously affecting the practicality and durability of the wrench.

[0004] In view of this, the present inventor has many years of experience in manufacturing, developing and designing related products, and after careful design and evaluation, the present application is finally obtained. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a wrench angle adjusting structure to solve the above-mentioned problems in the prior art. The wrench angle adjusting structure comprises a wrench handle body, a first lug and a second lug symmetrically arranged at one end of the wrench handle body, a pivot space formed between the first lug and the second lug, an axis hole formed in the first lug and the second lug and communicating with the pivot space, a pressing hole formed below the axis hole and partially lower than the bottom surface of the pivot space, a communicating arc groove formed on the bottom surface of the pivot space corresponding to the pressing hole, and a stop wall formed by the pressing hole not penetrating through the second lug. A working head has a working ratchet and a pivot lug, the pivot lug has an axis hole formed on both sides, the direction of the axis hole is different from and staggered with the direction of the hole diameter of the working ratchet, an axis pin is arranged to pass through the axis hole and the axis hole to pivotally connect the pivot lug in the pivot space, the bottom edge of the pivot lug is provided with a circular arc-shaped clamping part as the center of the axis hole, and the clamping part is continuously provided with a plurality of clamping teeth. A control unit has a resilient member and a control column, the resilient member is arranged in the pressing hole of the second lug and is limited by the stop wall, the control column is arranged between the pressing hole and the communicating arc groove, the outer diameter of the control column is concavely provided with an idling section and a clamping section, the idling section is horizontally cut to form a planar surface, the clamping section is continuously provided with a plurality of clamping teeth and is higher than the idling section, the idling section and the clamping section are arranged in the communicating arc groove and face the pivot space upward, only the clamping teeth of the clamping section protrude into the pivot space to engage with the clamping teeth of the clamping part, the end of the control column abuts against the limiting wall of the clamping section, the limiting wall abuts against the other end of the resilient member, and the angle adjustment and positioning of the working head are further controlled by pressing or not pressing the control column.

[0006] Preferably, the axis hole of the first lug is provided with an internal thread section, one end of the axis pin is provided with a tool hole, and the other end is provided with an external thread section, so as to screw and fix the axis pin with the axis hole.

[0007] Preferably, at least one half of the pressing hole is lower than the bottom surface of the pivot space.

[0008] Preferably, the area of the idling section is greater than the width of the clamping part of the pivot lug, the area of the clamping section is smaller than the idling section, and the clamping section can be completely retracted into the pressing hole of the second lug.

[0009] Preferably, the front end of the control column protrudes outward of the pressing hole of the first lug to form a pressing part.

[0010] Compared with the prior art, the cutting control unit of the present invention is disposed in the braking hole and connected in parallel with the locking part of the pivot lug. When the lever body and the working head are engaged and locked by the cutting control unit, the locking section of the cutting control column can reliably counterbalance the locking part and engage and position itself. This can effectively reduce structural stress and prevent chipping, deformation or even breakage. At the same time, it simplifies the structural composition and ensures the effect of engagement and positioning.

[0011] When adjusting the working head of the present invention, pressing the cutting control post will retract the locking section into the locking part that is disengaged from the pivot lug, thus providing a reliable way for the working head to swing and adjust. Releasing the cutting control post will cause it to spring back and push against the elastic member, allowing the cutting control post to quickly reset and the locking section to engage and position the locking part. This makes the angle adjustment and positioning of the working head more precise and easier to use, improving practicality and durability. Attached Figure Description

[0012] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0013] Figure 1 This is a perspective view of the present invention;

[0014] Figure 2 This is an exploded view of the present invention;

[0015] Figure 3 This is another embodiment of the tool head of the present invention;

[0016] Figure 4 This is a combined sectional view of the present invention;

[0017] Figure 5 This is a cross-sectional view of the present invention from another angle.

[0018] Figure 6 This is a cross-sectional view of the pressing and cutting control column of the present invention;

[0019] Figure 7 This is a cross-sectional view of the pressing and cutting control post of the present invention from another angle;

[0020] Figure 8 This is a schematic diagram illustrating the oscillation adjustment of the working head according to the present invention;

[0021] Figure 9 This is a cross-sectional view of the release springback and engagement positioning of the cutting control post according to the present invention;

[0022] Figure 10 This is a perspective view of the working head angle adjustment and positioning of the present invention.

[0023] The meanings of the reference numerals in the above figures are as follows:

[0024] [This Invention]

[0025] 10. Wrench handle body;

[0026] 11. First protruding ear;

[0027] 12. Second protruding ear;

[0028] 13. Pivotal space;

[0029] 131. Communicating arc groove;

[0030] 14. Shaft hole;

[0031] 141. Internal thread section;

[0032] 142. Groove;

[0033] 15. Actuation hole;

[0034] 151. Baffle wall;

[0035] 20. Working head;

[0036] 21. Working ratchet;

[0037] 22. Pivoting lug;

[0038] 221. Shaft hole;

[0039] 222. Locking mechanism;

[0040] 223. Locking teeth;

[0041] 23. Shaft bolt;

[0042] 231. Stopping part;

[0043] 232. Tool hole;

[0044] 233. External thread section;

[0045] 30. Cutting control unit;

[0046] 31. Elastic components;

[0047] 32. Cut the control column;

[0048] 321. Idle section;

[0049] 322. Detachment;

[0050] 323. Gear pull;

[0051] 324. Limiting wall;

[0052] 325. Pressing part. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. The terminology used herein is merely for describing specific embodiments and is not intended to limit the invention.

[0054] The terms “comprising,” “including,” etc., as used herein indicate the presence of the described features, steps, operations, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components. All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification and not in an idealized or overly rigid way.

[0055] In this document, unless otherwise specified, directional terms such as "up," "down," "left," "right," "inner," and "outer" are used to indicate orientation or positional relationships based on the accompanying drawings, and are only for the convenience of describing the invention, and do not indicate or imply that the device, element, or assembly referred to must have a specific orientation, or be constructed or operated in a specific orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationships they represent may also change accordingly. Therefore, these directional terms should not be construed as limiting the invention.

[0056] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0057] Those skilled in the art will understand that the features described in the various embodiments and / or claims of the present invention can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention can be combined or combined in various ways without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

[0058] First, please refer to Figures 1, 2, and 4. A wrench angle adjustment structure includes: a handle body 10, a working head 20, and a control unit 30. One end of the handle body 10 is provided with a symmetrical first lug 11 and a second lug 12, forming a pivot space 13 between the first and second lugs 11 and 12. The first and second lugs 11 and 12 are connected to the pivot space 13 by a shaft hole 14. The shaft hole 14 of the first lug 11 is provided with an internal thread section 141. A groove 142 is provided on the outer edge of the shaft hole 14 of the second lug 12. A stop hole 15 is provided below the shaft hole 14 of the first and second lugs 11 and 12, and at least half of the stop hole 15 is lower. On the bottom surface of the pivoting space 13, a communicating arc groove 131 is formed corresponding to the actuation hole 15. The actuation hole 15 does not penetrate the second lug 12 to form a baffle 151. The working head 20 has a working ratchet 21 and a pivot lug 22. The pivot lug 22 has a shaft hole 221 through both sides. The direction of the shaft hole 221 is different from and intersects with the diameter direction of the working ratchet 21. A shaft bolt 23 is used to fix the pivot lug 22 in the pivoting space 13 through the shaft hole 14 and the shaft hole 221, so that the pivot lug 22 can swing back and forth. One end of the shaft bolt 23 has a stop part 231 and a tool hole 232 on the end face. The other end has an external thread section 233. The shaft bolt 23 is further locked with screws. The method is combined and fixed with the shaft hole 14, and the stop part 231 is positioned against the groove 142. A circular arc-shaped locking part 222 is provided at the bottom edge of the pivot lug 22 with the shaft hole 221 as the center. The locking part 222 is provided with a plurality of locking teeth 223. The locking teeth 223 cover the entire locking part 222, or may only occupy at least half of the locking part 222 (as shown in Figure 3). The cutting control unit 30 has an elastic element 31 and a cutting control post 32. The elastic element 31 is inserted into the second lug 12 braking hole 15 and is restricted by the baffle 151. The cutting control post 32 passes through the braking hole 15 and the communicating arc groove 131, and the outer diameter of the cutting control post 32 is recessed into the pivot space 13 with a free-spinning section. 321 and a locking section 322, the area of ​​the idle section 321 is larger than the width of the locking part 222 of the pivot lug 22, and the idle section 321 is horizontally cut to form a planar shape. The area of ​​the locking section 322 is smaller than that of the idle section 321, and can be completely retracted into the locking hole 15 located in the second lug 12. The locking section 322 is continuously provided with multiple locking teeth 323 and is higher than the idle section 321. The end of the cutting control post 32 is close to the locking section 322 to form a limiting wall 324. The limiting wall 324 abuts against the other end of the elastic member 31, and the front end of the cutting control post 32 protrudes outside the locking hole 15 of the first lug 11 to form a pressing part 325. The angle adjustment and positioning of the working head 20 are further controlled by whether the cutting control post 32 is pressed or not.

[0059] The structure is further described in Figures 1, 2, 4, and 5. The locking unit 30, elastic element 31, and cutting control post 32 are sequentially assembled into the locking hole 15. The elastic element 31 is housed within the locking hole 15 of the second lug 12 and abuts against the baffle wall 151. The cutting control post 32 inserts the limiting wall 324 into the locking hole 15, with the limiting wall 324 abutting against the other end of the elastic element 31, further... 31 is confined between the limiting wall 324 and the stop wall 151, while the free-spinning section 321 and the locking section 322 of the cutting control column 32 are located opposite each other in the communicating arc groove 131 and facing the pivoting space 13. The pivot lug 22 of the working head 20 is assembled into the pivoting space 13 between the first and second lugs 11 and 12, and then the shaft bolt 23 is used to align the communicating shaft hole 221 and the first and second lugs 11 and 12. A screw thread is threaded through the shaft hole 14, allowing the working head 20 to swing back and forth within the pivot space 13 around the shaft bolt 23. The locking part 222 of the pivot lug 22 is inserted between the free-spinning section 321 and the locking section 322 of the cutting control post 32. The cutting control post 32 is also pushed outward by the elastic member 31, which presses the limiting wall 324 tightly against one side of the pivot lug 22 and extends the locking tooth 323 of the locking section 322 into the pivot space. The 13 engages with the locking teeth 223 of the locking part 222, thereby using the pivot lug 22 to restrict and position the cutting control post 32, preventing the cutting control post 32 from popping out of the locking hole 15. At the same time, through the mutual engagement of the locking teeth 223 and the locking teeth 323, the wrench body 10 and the working head 20 are in a normal engagement state using the cutting control post 32, thereby forming a wrench angle adjustment structure.

[0060] For the actual usage state of its structure, please refer to Figures 4 and 5. When the cutting control post 32 of the locking unit 30 is not pressed, the locking teeth 323 of the locking section 322 normally engage with the locking teeth 223 of the pivot lug 22 on the locking part 222, further restricting the angle of the working head 20 on the lever body 10 for the user to twist and tighten the workpiece. To adjust the usage angle of the working head 20, refer to Figures 6, 7, and 8. First, press the cutting control post 32 and compress the elastic member 31 inward, so that the locking section 322 of the cutting control post 32 retracts into the locking hole 15 of the second lug 12, and at the same time, the idle section 321 is displaced to face the pivot space 1. 3. At this time, the locking teeth 223 of the locking part 222 can disengage from the engagement of the locking teeth 323 and provide the pivot lug 22 with free swinging action through the free-spinning section 321. Accordingly, the angle of the working head 20 can be adjusted by swinging back and forth. After the angle is adjusted, please refer to Figures 9 and 10. Release the cutting control post 32 and reset it as the elastic member 31 rebounds and pushes it back, so that the locking section 322 slides out of the locking hole 15 of the second lug 12, returns to the communicating arc groove 131 and faces the pivoting space 13. Then, the locking teeth 323 engage with the locking teeth 223 of the pivot lug 22 to fix it, so as to achieve the purpose of positioning the angle of the working head 20.

[0061] By utilizing the structure of the above specific embodiment, the following effects can be achieved: The cutting control unit 30 of the present invention is disposed in the braking hole 15 and is connected in parallel with the locking part 222 of the pivot lug 22. When the handle body 10 and the working head 20 are engaged and locked by the cutting control unit 30, the locking section 322 of the cutting control column 32 can reliably counterbalance the locking part 222 and be engaged and positioned. This can effectively reduce structural stress and prevent chipping, deformation or even breakage. At the same time, it simplifies the structural composition and ensures the effect of engagement and positioning.

[0062] When adjusting the working head 20 of the present invention, pressing the cutting control post 32 will retract the locking section 322 into the locking part 222 that is disengaged from the pivot lug 22, thus providing the working head 20 with reliable swing adjustment. Releasing the cutting control post 32 will cause it to rebound and push back through the elastic member 31, allowing the cutting control post 32 to quickly reset and the locking section 322 to engage and position the locking part 222. This makes the angle adjustment and positioning of the working head 20 more precise and easier to use, improving practicality and durability.

[0063] In conclusion, this invention has indeed achieved a breakthrough in structural design and has improved inventive content. At the same time, it can achieve industrial applicability and progress. Furthermore, this invention has not been published in any publication, has novelty, and complies with the relevant provisions of the Patent Law.

[0064] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. In general, any equivalent changes and modifications made in accordance with the claims of the present invention should still fall within the scope of the present invention.

Claims

1. A wrench angle adjustment structure, characterized in that, include: A lever body has a first lug and a second lug at one end, which are symmetrically arranged and form a pivot space between the first lug and the second lug. The first lug and the second lug are connected by a shaft hole that communicates with the pivot space. The first lug and the second lug are provided with a stop hole below the shaft hole. The stop hole is partially lower than the bottom surface of the pivot space. A communicating arc groove is also formed on the bottom surface of the pivot space corresponding to the stop hole. The stop hole does not penetrate the second lug to form a baffle. A working head has a working ratchet and a pivot lug. The pivot lug has a central hole through both sides. The direction of the central hole is different from and intersects with the diameter direction of the working ratchet. A bolt is used to fix the pivot lug in the pivoting space through the central hole and the central hole. The bottom edge of the pivot lug has an arc-shaped locking part with the central hole as the center. The locking part has multiple locking teeth. The control unit has an elastic element and a control post. The elastic element is inserted into the actuation hole of the second lug and is restricted by the baffle. The control post passes through the actuation hole and the communicating arc groove. The outer diameter of the control post is recessed with a free-spinning section and a locking section. The free-spinning section is horizontally cut to form a planar shape, while the locking section has multiple locking teeth that are higher than the free-spinning section. The free-spinning section and the locking section are accommodated in the communicating arc groove and face upwards toward the pivoting space. Only the locking teeth of the locking section protrude into the pivoting space and engage with the locking teeth of the locking part. The end of the control post forms a limiting wall close to the locking section. The limiting wall abuts against the other end of the elastic element. The angle adjustment and positioning of the working head are further controlled by whether the control post is pressed or not.

2. The wrench angle adjustment structure according to claim 1, characterized in that, The first lug has an internal threaded section in its shaft hole. One end of the bolt has a tool hole, and the other end has an external threaded section, thereby securing the bolt to the shaft hole with a screw.

3. The wrench angle adjustment structure according to claim 1, characterized in that, At least half of the actuation hole is below the bottom surface of the pivot space.

4. The wrench angle adjustment structure according to claim 1, characterized in that, The area of ​​the idle section is larger than the width of the locking part of the pivot lug, and the area of ​​the locking section is smaller than the idle section, and can be completely retracted into the locking hole of the second lug.

5. The wrench angle adjustment structure according to claim 1, characterized in that, The front end of the control post protrudes from the actuation hole of the first lug to form a pressing part.

6. The wrench angle adjustment structure according to claim 1, characterized in that, The locking teeth of the pivot lug occupy at least half of the position of the locking part.

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