Hexagonal wrench and hexagonal wrench set

Abstract

The embodiment of the present application relates to the tool technical field, especially relates to a hexagonal wrench and hexagonal wrench set, which comprises an input shaft and a transmission head, one end of the input shaft is provided with two first fork arms, the transmission head is arranged between the two first fork arms, the transmission head comprises a shell and an output shaft arranged in the shell, the shell is rotatably connected with the two first fork arms respectively, and at least the shell is provided with a clamping structure. The embodiment of the present application realizes the quick switching of the transmission head between the clamping position and the release position by arranging the clamping device on the input shaft. When in the clamping position, the transmission head is rigidly connected with the first fork arm, so that the torque is effectively transmitted, thereby avoiding the accidental rotation of the transmission head in the process of fastening or disassembling the bolt and the bolt deviation caused thereby, and meanwhile, the frequent correction of the bolt position is also avoided, and the working efficiency of the user in the fastening or disassembling operation is significantly improved.

Description

Technical Field

[0001] This application relates to the field of tool technology, and in particular to a hex wrench and a hex wrench set. Background Technology

[0002] A wrench is a common installation and disassembly tool. It is a hand tool that uses leverage to tighten or loosen bolts, screws, nuts, and other threaded fasteners with open or recessed holes. Wrenches are usually made of carbon or alloy structural steel. Hex wrenches are the most common type, mainly divided into two categories: internal hex wrenches and external hex wrenches. Internal hex wrenches are used to tighten and loosen internal hex bolts, while external hex wrenches are used to tighten and loosen external hex bolts.

[0003] Most hex wrenches on the market today consist of a handle and a rotating head. Although the rotating head can rotate relative to the handle, allowing the head to be adjusted to different angles for operation, existing hex wrenches have the following drawbacks: when tightening or loosening bolts, the rotating head is prone to rotation, which can cause the bolt to shift, requiring multiple adjustments to the bolt's position and severely reducing the user's work efficiency.

[0004] To address the aforementioned technical problems, a new type of hex wrench is urgently needed. Utility Model Content

[0005] This application provides a hex wrench and a hex wrench set to solve the technical problem that when tightening or loosening bolts, the wrench head is prone to rotation, which causes the bolt to shift and requires multiple adjustments to the bolt position, severely reducing the user's work efficiency.

[0006] The embodiments of this application provide the following technical solutions to solve the above-mentioned technical problems: A hexagonal wrench includes an input shaft and a transmission head. One end of the input shaft is provided with two first forks, and the transmission head is disposed between the two first forks. The transmission head includes a housing and an output shaft disposed within the housing. The housing is rotatably connected to the two first forks respectively, and at least the housing is provided with a snap-fit ​​structure. The input shaft is provided with a locking device, which includes an operating component and a locking component. The operating component is sleeved on the outside of the input shaft and is movably connected to the input shaft. One end of the locking component is connected to the operating component, and the other end passes through the first fork arm and cooperates with the locking structure. The operating member is configured to move between a first position and a second position. When the operating member is in the first position, the locking member engages with the locking structure to lock the transmission head. When the operating member is in the second position, the locking member disengages from the locking structure.

[0007] The beneficial effects of the embodiments of this application are as follows: This embodiment of the application achieves rapid switching of the transmission head between the locked and released positions by setting a locking device on the input shaft. In the locked position, the transmission head is rigidly connected to the first fork arm, ensuring effective torque transmission and thus avoiding accidental rotation of the transmission head and the resulting bolt misalignment during bolt tightening or loosening; it also avoids frequent bolt position corrections, significantly improving the user's work efficiency in tightening or loosening operations.

[0008] In one possible implementation, there are two snap-fit ​​structures, each including a first groove and a second groove. The first groove is located on the outer wall of the first fork arm, and the second groove is located on the outer wall of the housing. The first groove and the second groove cooperate to form the snap-fit ​​structure.

[0009] In one possible implementation, the operating element includes a locking sleeve and a second fork arm, the second fork arm being connected to the locking sleeve at one end near the input shaft and to a locking element at the end near the input shaft at the other end away from the input shaft; the locking sleeve is fitted onto the outside of the input shaft.

[0010] In one possible implementation, the locking element is two locking rods. The locking rods move within the locking structure at the end away from the input shaft by means of the movement of the locking sleeve, so that the transmission head switches between the locking position and the releasing position.

[0011] In one possible implementation, a spring-loaded structure is provided between the locking sleeve and the input shaft.

[0012] In one possible implementation, the springback structure includes a second spring and a receiving cavity located on the inner wall of the locking sleeve, the second spring being sleeved on the outer wall of the input shaft and located within the receiving cavity.

[0013] In one possible implementation, the outer wall of the output shaft is provided with a ratchet, the inner wall of the ratchet is connected to the output shaft, and the outer side of the ratchet is provided with two pawls. Both pawls are elastically connected to the inner wall of the housing, with one pawl engaging with the outer ratchet teeth of the ratchet wheel and the other pawl disengaging from the outer ratchet teeth of the ratchet wheel; The transmission head is equipped with a reversing device for controlling the direction of the ratchet.

[0014] In one possible implementation, the reversing device includes a reversing cap and a connecting rod at least at one end of the housing, the reversing cap being connected to the connecting rod, and two pawls located on both sides of the connecting rod in a direction perpendicular to the output shaft. During reversal, rotating the reversing cap moves the connecting rod and disengages one pawl that is engaged with the ratchet, while the other pawl engages with the ratchet under elastic action.

[0015] In one possible embodiment, one end of the output shaft is provided with a first head connector and the other end is provided with a first sleeve connector.

[0016] In one possible implementation, both the side of the housing and the input shaft have connection ports at the end furthest from the drive head.

[0017] In one possible implementation, an extension rod is also included, the connection port is connected to the extension rod, one end of the extension rod is provided with a second sleeve connector, and the other end is provided with a second bit connector.

[0018] Technical effects of the embodiments in this application: (1) The hex wrench provided in this application embodiment, compared with the traditional wrench, has a first head connector and a first socket connector on the output shaft at the same time. When the operator uses it, he can tighten and loosen bolts of various specifications or types at the same time without frequently changing the hex wrench. It is very convenient to use and improves the work efficiency of the operator.

[0019] (2) The hexagonal wrench provided in this application embodiment, compared with the traditional wrench, eliminates the need for operators to purchase multiple types of wrenches, which not only reduces procurement costs but also saves space for consumers in terms of storage.

[0020] (3) The hex wrench provided in this application embodiment does not require pulling out and reversing to change direction compared to a traditional wrench. Instead, by setting a ratchet, pawl and reversing device, when changing direction, the reversing device only needs to push open one pawl that is engaged with the ratchet, and the other pawl engages with the ratchet under the elastic action, thereby directly completing the reversing. The reversing is not only very convenient, but also improves the reversing speed.

[0021] (4) The hex wrench provided in this application embodiment, compared with the traditional wrench, after the extension rod is connected to the connector, the hex wrench will become a T-shaped wrench. During use, the extension rod can be used as a counterweight for the wrench, which can improve the efficiency of the user in tightening or loosening bolts.

[0022] This application embodiment also provides a hex wrench set, including the hex wrench, socket, and bit.

[0023] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that can be solved by the hexagonal wrench and hexagonal wrench assembly provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application; Figure 2 for Figure 1 The main view; Figure 3 for Figure 2 A cross-sectional view of the AA plane; Figure 4 for Figure 2 A cross-sectional view of the BB plane; Figure 5 for Figure 3 A sectional view of the C-plane; Figure 6 for Figure 1 Top view; Figure 7 This is a schematic diagram of the locking device structure in Embodiment 1 of this application; Figure 8 This is a schematic diagram of the commutation device structure in Embodiment 1 of this application. Figure 1 ; Figure 9 This is a schematic diagram of the commutation device structure in Embodiment 1 of this application. Figure 2 ; Figure 10 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0026] Explanation of reference numerals in the attached figures: 1. Input shaft; 2. First fork arm; 3. Transmission head; 4. Housing; 5. Output shaft; 6. Ratchet; 7. Pawl; 8. First batch head connector; 9. First sleeve connector; 10. Reversing device; 101. Upper reversing cap; 102. Lower reversing cap; 103. Connecting rod; 11. Locking device; 111. Locking sleeve; 112. Springback structure; 1121. Second spring; 1122. Receiving cavity; 113. Locking rod; 114. Second fork arm; 12. Extension rod; 13. Snap-fit ​​structure; 131. First groove; 132. Second groove; 14. Connecting port; 15. First spring.

[0027] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] like Figures 1 to 10 As shown, a hexagonal wrench includes an input shaft 1 and a transmission head 3. One end of the input shaft 1 is provided with two first fork arms 2, and the transmission head 3 is provided between the two first fork arms 2. The transmission head 3 includes a housing 4 and an output shaft 5 provided in the housing 4. The housing 4 is rotatably connected to the two first fork arms 2 respectively, and at least the housing 4 is provided with a snap-fit ​​structure 13. It should be noted that the input shaft 1 and the two first forks 2 can be integrally formed or not integrally formed.

[0030] The input shaft 1 is provided with a locking device 11, which includes an operating component and a locking component. The operating component is sleeved on the outside of the input shaft 1 and is movably connected to the input shaft 1. One end of the locking component is connected to the operating component, and the other end passes through the first fork arm 2 and cooperates with the locking structure 13. The operating member is configured to move between a first position and a second position. When the operating member is in the first position, the locking member engages with the locking structure 13 to lock the transmission head 3. When the operating member is in the second position, the locking member disengages from the locking structure 13.

[0031] In one possible implementation, there are two snap-fit ​​structures 13. Each snap-fit ​​structure 13 includes a first groove 131 and a second groove 132. The first groove 131 is located on the outer wall of the first fork arm 2, and the second groove 132 is located on the outer wall of the housing 4. The first groove 131 and the second groove 132 cooperate to form the snap-fit ​​structure 13.

[0032] In one possible implementation, the operating element includes a locking sleeve 111 and a second fork arm 114. The second fork arm 114 is connected to the locking sleeve 111 at one end near the input shaft 1 and to a locking element at the end near the input shaft 1 at the other end away from the input shaft 1. The locking sleeve 111 is fitted onto the outside of the input shaft 1.

[0033] In one possible implementation, the locking element is two locking rods 113. The locking rods 113 move within the locking structure 13 at the end away from the input shaft 1 by means of the movement of the locking sleeve 111, so that the transmission head 3 switches between the locking position and the release position.

[0034] In one possible implementation, a spring-loaded structure 112 is provided between the locking sleeve 111 and the input shaft 1. The spring-loaded structure 112 includes a second spring 1121 and a receiving cavity 1122 located on the inner wall of the locking sleeve 111. The second spring 1121 is sleeved on the outer wall of the input shaft 1 and located in the receiving cavity 1122.

[0035] In one possible embodiment, the output shaft 5 is provided with a first head connector 8 at one end and a first sleeve connector 9 at the other end. When in use, the first batch head connector 8 is connected to a screwdriver bit for tightening and loosening internal hex bolts, and the first sleeve connector 9 is connected to a sleeve for tightening and loosening external hex bolts.

[0036] When using the equipment, the operator first determines whether to use internal or external hex bolts based on the bolt specifications or type. If internal hex bolts are chosen, the first batch of head connectors 8 are rotated to the outward-facing first position. Then, the internal hex bolts are tightened or loosened. When external hex bolts need to be tightened or loosened, one hand pulls the locking sleeve 111 along the input shaft 1 in a direction away from the transmission head 3. The two locking rods 113 are also moved in the same direction by the locking sleeve 111. When the locking rods 113 are no longer locking the transmission head 3, the other hand rotates the transmission head 3 to the outward-facing second position. At this time, the locking sleeve 111 is released, and the two locking rods 113 are reset and locked by the locking sleeve 111. At this time, the transmission head 3 can no longer be rotated, and the operator can proceed with the work.

[0037] In one possible embodiment, a ratchet 6 is provided on the outer wall of the output shaft 5, the inner wall of the ratchet 6 is connected to the output shaft 5, and two pawls 7 are provided on the outer side of the ratchet 6. The two pawls 7 are elastically connected to the inner wall of the housing 4 by the first spring 15, wherein one pawl 7 is engaged with the outer ratchet tooth of the ratchet 6, and the other pawl 7 is disengaged from the outer ratchet tooth of the ratchet 6. The transmission head 3 is equipped with a reversing device 10 for controlling the direction of the ratchet 6. The reversing device includes an upper reversing cover 101, a lower reversing cover 102 and a connecting rod 103, and the upper reversing cover 101 and the lower reversing cover 102 are connected by the connecting rod 103; The upper reversing cap 101 and the lower reversing cap 102 are rotatably connected to both ends of the housing 4, respectively. In the direction perpendicular to the output shaft 5, the two pawls 7 are located on both sides of the connecting rod 103; During reversing, rotating the upper reversing cover 101 or the lower reversing cover 102 drives the connecting rod 103 to move. The connecting rod 103 disengages from one pawl 7 that is engaged with the ratchet 6, while the other pawl 7 engages with the ratchet 6 under elastic action.

[0038] like Figure 4As shown, during use, one pawl 7 engages with the outer ratchet teeth of the ratchet 6. The connecting rod 103 pushes the other pawl 7 to disengage from the ratchet 6. When the ratchet 6 rotates in the D direction with the output shaft 5, it pushes the pawl 7 towards the inner wall of the housing 4 and compresses the first spring 15. Because the pawl 7 is restricted by the limited space, the ratchet 6 cannot rotate in the opposite direction to the D direction. When reversing is required, the upper reversing cover 101 or the lower reversing cover 102 is manually rotated to move the connecting rod 103. The connecting rod 103 pushes one pawl to disengage from the ratchet 6, and the other pawl 7 re-expands with the elastic deformation of the first spring 15. At this time, the ratchet 6 can rotate in the opposite direction to the D direction, but rotation in the D direction is restricted. This method can achieve quick reversing, which is simple and efficient.

[0039] It should be noted that, in addition to the first and second states, the transmission head 3 of this type of wrench can also be rotated to a position between the first and second states, that is, the output shaft 5 and the input shaft 1 are at an angle of 0°-90°. At this time, the transmission head 3 can be in a locked state or a free state, and the operator can flexibly choose various angles when using it.

[0040] like Figure 2 As shown, in one possible implementation, the side of the housing 4 and the input shaft 1 are both provided with a connection port 14 at the end away from the transmission head 3.

[0041] like Figure 10 As shown, in one possible embodiment, it further includes an extension rod 12, with a connecting port 14 connecting the extension rod 12. One end of the extension rod 12 is provided with a second sleeve connector, and the other end is provided with a second bit connector. In use, the second sleeve connector is used to connect the sleeve, and the second bit connector is used to connect the bit.

[0042] This application also provides a hex wrench set, including a hex wrench, a socket, and a bit.

[0043] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0044] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A hexagonal wrench, comprising an input shaft (1) and a transmission head (3), characterized in that, The input shaft (1) has two first forks (2) at one end, and the transmission head (3) is arranged between the two first forks (2). The transmission head (3) includes a housing (4) and an output shaft (5) disposed in the housing (4). The housing (4) is rotatably connected to the two first forks (2) respectively, and at least the housing (4) is provided with a snap-fit ​​structure (13). The input shaft (1) is provided with a locking device (11), which includes an operating component and a locking component. The operating component is sleeved on the outside of the input shaft (1) and is movably connected to the input shaft (1). One end of the locking component is connected to the operating component, and the other end passes through the first fork arm (2) and cooperates with the locking structure (13). The operating member is configured to move between a first position and a second position. When the operating member is in the first position, the locking member cooperates with the snap-fit ​​structure (13) to lock the transmission head (3). When the operating member is in the second position, the locking member separates from the snap-fit ​​structure (13).

2. The hexagonal wrench according to claim 1, characterized in that, The number of the snap-fit ​​structure (13) is two. Both snap-fit ​​structures (13) include a first groove (131) and a second groove (132). The first groove (131) is located on the outer wall of the first fork arm (2), and the second groove (132) is located on the outer wall of the housing (4). The first groove (131) and the second groove (132) cooperate to form the snap-fit ​​structure (13).

3. The hexagonal wrench according to claim 1, characterized in that, The operating element includes a locking sleeve (111) and a second fork arm (114). The second fork arm (114) is connected to the locking sleeve (111) at one end near the input shaft (1) and to a locking element at the other end near the input shaft (1). The locking sleeve (111) is fitted onto the outside of the input shaft (1).

4. The hexagonal wrench according to claim 2, characterized in that, The locking element consists of two locking rods (113). The locking rods (113) move within the locking structure (13) at the end away from the input shaft (1) by means of the movement of the locking sleeve (111), so that the transmission head (3) switches between the locking position and the release position.

5. The hexagonal wrench according to claim 3, characterized in that, A spring-loaded structure (112) is provided between the locking sleeve (111) and the input shaft (1).

6. The hexagonal wrench according to claim 5, characterized in that, The springback structure (112) includes a second spring (1121) and a receiving cavity (1122) located on the inner wall of the locking sleeve (111). The second spring (1121) is sleeved on the outer wall of the input shaft (1) and located in the receiving cavity (1122).

7. The hexagonal wrench according to claim 1, characterized in that, The output shaft (5) has a ratchet (6) on its outer wall, the inner wall of the ratchet (6) is connected to the output shaft (5), and the ratchet (6) has two pawls (7) on its outer side. The two pawls (7) are elastically connected to the inner wall of the housing (4), one pawl (7) is engaged with the outer ratchet tooth of the ratchet wheel (6), and the other pawl (7) is disengaged from the outer ratchet tooth of the ratchet wheel (6); The transmission head (3) is provided with a reversing device (10) for controlling the direction of the ratchet (6).

8. The hexagonal wrench according to claim 7, characterized in that, The reversing device (10) includes a reversing cover and a connecting rod (103) at least at one end of the housing. The reversing cover is connected to the connecting rod (103). In the direction perpendicular to the output shaft (5), two pawls (7) are located on both sides of the connecting rod (103). During reversal, rotating the reversing cap causes the connecting rod (103) to move and act on one pawl (7) that is engaged with the ratchet (6) to disengage, while the other pawl (7) engages with the ratchet (6) under elastic action.

9. The hexagonal wrench according to claim 1, characterized in that, The output shaft (5) is provided with a first head connector (8) at one end and a first sleeve connector (9) at the other end.

10. The hexagonal wrench according to claim 1, characterized in that, The housing (4) and the input shaft (1) are both provided with a connection port (14) at the end away from the transmission head (3).

11. The hexagonal wrench according to claim 10, characterized in that, It also includes an extension rod (12), the connection port (14) is connected to the extension rod (12), one end of the extension rod (12) is provided with a second sleeve connector, and the other end is provided with a second bit connector.

12. A hexagonal wrench set, characterized in that, Includes the hex wrench, socket, and bit as described in any one of claims 1-11.

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