wrench

Abstract

The application relates to a wrench, which comprises a handle, a clamping mechanism and a ratchet mechanism, the clamping mechanism is installed on the handle and comprises an adjusting part and at least two clamping parts, all the clamping parts are arranged at intervals with a rotation axis as a central axis to jointly form a clamping gap, the adjusting part is threadedly connected with at least one clamping part, under the action of external force, the adjusting part can drive at least one clamping part to approach or move away from the remaining clamping parts to change the size of the clamping gap, so that different nominal diameter fasteners can be conveniently clamped and twisted, and the wrench does not need to be replaced; one part of the ratchet mechanism is connected with the clamping mechanism, and the other part is installed on the handle, which is configured to enable the handle to rotate together with the clamping mechanism around the rotation axis or to be reversely rotated alone around the rotation axis relative to the clamping mechanism, so that after the wrench is twisted by a certain angle, the wrench does not need to be taken out of the fastener being operated and re-connected with the fastener, thereby greatly facilitating the use of the user.

Description

Technical Field

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

[0002] A wrench is a common tool for installation and disassembly. Specifically, it is a hand tool that uses leverage to tighten or loosen fasteners such as bolts, screws, or nuts. Typically, a wrench has a handle at one or both ends of its stem. To use it, simply hold the handle and apply force in the direction of the thread rotation to tighten or loosen the bolt or nut.

[0003] Most existing ordinary wrenches can only be used for fasteners with a fixed nominal diameter. Moreover, after turning a certain angle, they cannot be turned in the opposite direction. It is necessary to remove the fastener being worked on and adjust the wrench's rotation angle to re-lock it. As a result, multiple different models of wrenches are required for the work, and their use is extremely inconvenient. Utility Model Content

[0004] Therefore, it is necessary to provide a wrench that can solve the problems of existing wrenches being unable to be used with fasteners of different specifications and being inconvenient to use as they cannot be reversed during use.

[0005] According to one aspect of this application, a wrench is provided, comprising:

[0006] handle;

[0007] A clamping mechanism is mounted on the handle. The clamping mechanism includes an adjusting member and at least two clamping members. All the clamping members are spaced apart about a rotation axis to form a clamping gap. The adjusting member is threadedly connected to at least one of the clamping members. Under the action of external force, the adjusting member can drive at least one of the clamping members to move closer or further away from the other clamping members to change the size of the clamping gap.

[0008] A ratchet mechanism, partly connected to the clamping mechanism and partly mounted on the handle, is configured to allow the handle to rotate about the rotation axis together with the clamping mechanism, or to rotate independently about the rotation axis relative to the clamping mechanism in the opposite direction.

[0009] In one embodiment, the handle has a mounting hole coaxially arranged with the rotation axis. The diameter of the mounting hole gradually decreases or increases along its own axial direction. Each clamping member passes through the mounting hole and is movably connected to the hole wall. The adjusting member is rotatably coaxially arranged with the rotation axis on the handle. The side of each clamping member opposite to the rotation axis is threadedly connected to the adjusting member.

[0010] When the adjusting member rotates about the rotation axis, any one of the clamping members can move together with the other clamping members to move closer to or further away from each other.

[0011] In one embodiment, the wall of the mounting hole is provided with a track groove corresponding to each of the clamping members, at least one of the track grooves is inclined relative to the rotation axis, and each clamping member is slidably limited in a corresponding track groove.

[0012] In one embodiment, the handle has a connecting end, the mounting hole is formed in the connecting end, and the outer peripheral surface of the connecting end has a slot communicating with the mounting hole, at least a portion of the adjusting member is rotatably embedded in the slot.

[0013] In one embodiment, the handle includes a handle body and an annular track. One end of the handle body has a through hole extending through its opposite sides. The annular track is coaxially inserted into the through hole, and the mounting hole extends through the opposite sides of the annular track along its own axial direction.

[0014] In one embodiment, the handle is provided with a retaining spring coaxially arranged with the through hole, and the outer circumferential surface of the annular track is provided with a retaining groove, and the inner circumferential edge of the retaining spring is embedded in the retaining groove so that the annular track and the handle are fixedly connected to each other.

[0015] In one embodiment, the ratchet mechanism includes a ratchet and ratchet teeth. The ratchet is coaxially arranged with the rotation axis and connected to the clamping mechanism, and the ratchet teeth are connected to the handle and partially engaged with the outer peripheral surface of the ratchet.

[0016] When the handle rotates about the rotation axis along one of the first circumferential direction and the second circumferential direction, the handle, the ratchet, the ratchet wheel and the clamping mechanism rotate together;

[0017] When the handle rotates about the rotation axis along the other of the first circumferential direction and the second circumferential direction, the handle and the ratchet rotate relative to the ratchet and the clamping mechanism.

[0018] The first circumferential direction is opposite to the second circumferential direction.

[0019] In one embodiment, the ratchet is movably disposed on the handle and is movable relative to the handle to a first position or a second position; the ratchet includes a first connecting portion and a second connecting portion connected to each other;

[0020] When the ratchet moves to the first position, the first connecting part engages with the ratchet, and the handle, the ratchet, the ratchet and the clamping mechanism can rotate together along the first circumferential direction, or the handle and the ratchet can rotate relative to the ratchet and the clamping mechanism along the second circumferential direction.

[0021] When the ratchet moves to the second position, the second connecting part engages with the ratchet, and the handle, the ratchet, the ratchet and the clamping mechanism can rotate together along the second circumferential direction, or the handle and the ratchet can rotate relative to the ratchet and the clamping mechanism along the first circumferential direction.

[0022] In one embodiment, the handle is provided with a toggle switch, which can move relative to the handle under the action of an external force to abut against the first connecting part or the second connecting part;

[0023] When the dial abuts against the first connecting part, the first connecting part engages with the ratchet; when the dial abuts against the second connecting part, the second connecting part engages with the ratchet.

[0024] In one embodiment, the toggle switch is connected to the ratchet via an elastic element configured to provide an elastic force that enables the ratchet to resiliently engage with the ratchet.

[0025] The aforementioned wrench, on the one hand, by setting an adjusting member threadedly connected to at least one of the clamping members, allows the adjusting member to drive at least one clamping member to move away from or closer to the other clamping members, thereby infinitely adjusting the clamping gap. Therefore, the wrench provided in this application can conveniently clamp fasteners of different nominal diameters for tightening operations without the need to change wrenches. On the other hand, by setting a ratchet mechanism on the handle and connecting it to the clamping mechanism, the ratchet mechanism can control the handle to rotate together with the clamping mechanism, or control the handle to rotate independently in the opposite direction relative to the clamping mechanism. When the handle rotates together with the clamping mechanism, the handle can clamp the fastener for tightening operations. When the handle rotates independently in the opposite direction relative to the clamping mechanism, the handle can return to its original angle. Therefore, after the wrench has tightened to a certain angle, there is no need to remove the wrench from the fastener being tightened and then re-engage it with the fastener, greatly facilitating the user's use and improving the ease of use when tightening with the wrench. Attached Figure Description

[0026] Figure 1 Axial view of a wrench provided in an embodiment of this application Figure 1 .

[0027] Figure 2Axial view of a wrench provided in an embodiment of this application Figure 2 .

[0028] Figure 3 This is a schematic diagram of the locking mechanism in a wrench provided in an embodiment of this application.

[0029] Figure 4 for Figure 1 An enlarged schematic diagram of region A in the middle.

[0030] Figure 5 This is a front sectional view of a wrench provided in an embodiment of this application.

[0031] Figure 6 This is an exploded schematic diagram of a wrench provided in one embodiment of this application.

[0032] Figure 7 This is a top sectional view of a wrench with the ratchet tooth in the first position, provided in an embodiment of this application.

[0033] Figure 8 This is a top sectional view of a wrench with the ratchet tooth in the second position, provided in an embodiment of this application.

[0034] Figure 9 This is a top view of a wrench with the ratchet gear engaged in the first position, according to an embodiment of this application.

[0035] Figure 10 This is a top view of a wrench with the ratchet engaged in a second position, according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Wrench; 100. Handle; 101. Connecting end; 102. Grip end; 103. Mounting hole; 104. Track groove; 105. Slot; 110. Handle body; 111. Through hole; 120. Circular track; 121. Slot; 130. Snap ring; 200. Clamping mechanism; 201. Clamping gap; 210. Adjusting element; 220. Clamping element; 300. Ratchet mechanism; 310. Ratchet; 320. Ratchet tooth; 321. First connecting part; 322. Second connecting part; 330. Button; 340. Reversing coupling; 350. Elastic element; 40. Rotation axis. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0044] One embodiment of this application provides a wrench for engaging with fasteners such as screws, bolts, or nuts, and using the lever principle to turn the fasteners to tighten or loosen them, thereby enabling the installation or disassembly of two parts.

[0045] See Figure 1 and Figure 2 , Figure 1 and Figure 2 A schematic diagram of a wrench 10 according to an embodiment of this application is shown. The wrench 10 provided in one embodiment of this application includes a handle 100, a clamping mechanism 200, and a ratchet mechanism 300. The clamping mechanism 200 is mounted on the handle 100, and a portion of the ratchet mechanism 300 is connected to the clamping mechanism 200, while another portion is mounted on the handle 100. The clamping mechanism 200 is used to clamp fasteners; the handle 100 is used for a user to grip and use leverage to perform a tightening operation on the fasteners; the ratchet mechanism 300 enables the handle 100 to rotate together with the clamping mechanism 200 about a rotation axis 40, or to rotate relative to the clamping mechanism 200 about the rotation axis 40, so that the handle 100 can return to its original angle without disengaging from the fastener after being tightened to a certain angle.

[0046] In the embodiment shown in the figure, the handle 100 has a connecting end 101 and a gripping end 102 disposed opposite to each other. The clamping mechanism 200 and the ratchet mechanism 300 are both disposed on the connecting end 101, while the gripping end 102 is used for user gripping to apply force to the fastener. Specifically, the clamping mechanism 200 includes an adjusting member 210 and two opposing clamping members 220, each clamping member 220 having a clamping surface (not shown in the figure), and a clamping gap 201 is formed between the clamping surfaces of the two clamping members 220; further combined with... Figure 3 As shown, the adjusting member 210 is movably mounted on the handle 100 and is connected to the two clamping members 220 by means of a threaded connection. Under the drive of an external force, the adjusting member 210 can move relative to the handle 100 and can drive the two oppositely mounted clamping members 220 to move closer or further away from each other, so as to change the size of the clamping gap 201.

[0047] Thus, when it is necessary to tighten fasteners of different nominal diameters, the adjusting member 210 can be moved to infinitely adjust the size of the clamping gap 201, thereby enabling the clamping of fasteners of different nominal diameters for tightening operations. Therefore, it is not necessary to change the wrench 10 when tightening fasteners of different nominal diameters, which is convenient for users.

[0048] It is understood that the clamping member 220 is not limited to two, but can also be multiple, with multiple clamping members 220 spaced apart around the rotation axis 40 to form a clamping gap 201; it is also understood that the adjusting member 210 can be threadedly connected to only one clamping member 220. In this case, only one clamping member 220 can move closer to or further away from the other clamping members 220 under the drive of the adjusting member 210 to clamp the size of the gap 201. None of the above is limited.

[0049] Preferably, the clamping surface of the clamping member 220 for clamping the fastener can be designed to match the shape of the outer peripheral surface of the fastener, thereby enabling the clamping member 220 to clamp the fastener more firmly.

[0050] More specifically, in the connection structure between the clamping mechanism 200 and the handle 100, such as Figure 4 and Figure 5 As shown, the connecting end 101 of the handle 100 has a mounting hole 103 coaxially arranged with the rotation axis 40. The diameter of the mounting hole 103 gradually decreases or increases along its own axial direction. Each clamping member 220 passes through the mounting hole 103 and is movably connected to the hole wall of the mounting hole 103. In the embodiment shown in the figure, the adjusting member 210 is annular and is rotatably coaxially arranged with the rotation axis 40 on the handle 100. The side of each clamping member 220 facing away from the rotation axis 40 is threadedly connected to the inner circumferential surface of the adjusting member 210, and... Figure 5The diameter of the mounting hole 103 gradually decreases from top to bottom. Thus, when the adjusting member 210 rotates about the rotation axis 40 under the action of an external force, any one of the clamping members 220 can move radially along the mounting hole 103 together with the other clamping members 220 to move closer or further apart. There are two clamping members 220, symmetrically arranged about the rotation axis 40 (i.e., the central axis of the mounting hole 103). When the adjusting member 210 rotates, the two opposing clamping members 220 can move closer or further apart. Specifically, when the adjusting member 210 rotates in a circumferential direction, the two clamping members 220 can simultaneously move relative to each other. Figure 5 The vertical downward tilting motion of the adjusting member 210 brings the clamping surfaces of the two clamping members closer together, thereby clamping the fastener; when the adjusting member 210 rotates in the opposite direction along the circumference, the two clamping members 220 can simultaneously clamp relative to each other. Figure 5 The vertical upward tilting motion causes the clamping surfaces of the two parts to move away from each other, thereby loosening the fastener.

[0051] Please continue reading. Figure 5 ,from Figure 5 As can be seen from the cross-sectional view shown, the walls of the mounting hole 103 on both sides of its own radial direction are symmetrical about the axis of rotation 40. Therefore, it can be understood that the walls of the mounting hole 103 on both sides of its own radial direction may not be symmetrical. For example, one side of the hole wall may be inclined while the other side is not inclined. However, as long as the diameter of the mounting hole 103 gradually decreases or increases along its own axial direction, so that the clamping members 220 can move closer or further apart, it is not limited here.

[0052] As a further improvement, such as Figure 4 As shown, the mounting hole 103 has a track groove 104 that corresponds to the clamping member 220. Since the diameter of the mounting hole 103 gradually decreases or increases along its own radial direction, at least one track groove 104 is inclined relative to the rotation axis 40. Figure 4 Since there are two clamping members 220, there are also two track grooves 104. Both track grooves 104 are inclined relative to the rotation axis 40 and symmetrically arranged with the rotation axis 40 as the axis of symmetry. Each clamping member 220 is slidably confined in its corresponding track groove 104. By setting the track grooves 104, it can be ensured that the clamping member 220 can only move along the extension direction of the track groove 104, thus avoiding the occurrence of skew or misalignment of the clamping member 220 when clamping the fastener.

[0053] It is worth noting that, because the clamping component 220 frequently slides within the track groove 104, prolonged sliding will cause wear on both the clamping component 220 and the groove wall of the track groove 104. When the groove wall of the track groove 104 is worn, the handle 100 needs to be replaced. Replacing all handles 100 would result in significant waste. Therefore, furthermore, such as Figure 4 , Figure 5 and Figure 6 As shown, the handle 100 includes a handle body 110 and an annular track 120. A connecting end 101 is located at one end of the handle body 110, and a gripping end 102 is located at the opposite end of the handle body 110. The end of the handle body 110 used as the connecting end 101 has a through hole 111 extending through its opposite sides. The annular track 120 is coaxially inserted into the through hole 111, and a mounting hole 103 extends through the opposite sides of the annular track 120 along its axial direction. Thus, a track groove 104 is formed on the annular track 120. When the track groove 104 is severely worn, only the annular track 120 needs to be replaced, without replacing the entire handle 100, thereby saving costs and avoiding waste.

[0054] After the annular track 120 is inserted into the mounting hole 103, in order to prevent the annular track 120 from falling out of the through hole 111 and to facilitate the removal of the annular track 120 from the handle 110, based on the above embodiment, the handle 110 is provided with a retaining spring 130 coaxially arranged with the through hole 111, and the outer peripheral surface of the annular track 120 is provided with a retaining groove 121, and the inner peripheral edge of the retaining spring 130 is embedded in the retaining groove 121. In one specific embodiment, a retaining ring 130 is disposed on one side of the handle 110 along its thickness direction. A retaining groove 121 is formed on the outer peripheral surface of the portion of the annular track 120 exposed in the through hole 111. It can be seen that when the inner periphery of the retaining ring 130 is engaged in the retaining groove 121, one side of the retaining ring 130 abuts against one side surface of the handle 110, and the other side abuts against the groove wall of the retaining groove 121. This allows the annular track 120 to have its axial displacement restricted by the retaining ring 130, thus preventing it from falling out of the through hole 111. Furthermore, from... Figure 4 It can also be seen that the retaining ring 130 has an opening. When it is necessary to disassemble the annular track 120, the opening of the retaining ring 130 is pried open. At this time, the retaining ring 130 can produce a recoverable deformation, so that the retaining ring 130 can be taken out from the retaining groove 121, and the annular track 120 can be easily disassembled from the handle 110.

[0055] In addition, to make the structure of the wrench 10 more compact, the dimension of the wrench 10 in the thickness direction is reduced, such as... Figure 5 and Figure 6As shown, the connecting end 101 of the handle 100 has a thin columnar structure, and a slot 105 communicating with the mounting hole 103 is provided on the outer peripheral surface of the connecting end 101. That is, the slot 105 passes through the handle body 110 and the annular track 120 radially along the mounting hole 103. At least a portion of the adjusting member 210 is rotatably embedded in the slot 105. Preferably, a portion of the adjusting member 210 is embedded in the slot 105, and the other portion is exposed outside the slot 105, so that the user can easily touch the adjusting member 210 with their fingers, thereby facilitating the rotation of the adjusting member 210.

[0056] In other embodiments, the adjustment member 210 may also be disposed on one side of the handle 100 along its own thickness direction, which is not limited here.

[0057] Please continue reading. Figure 5 and Figure 6 Regarding the structure of the ratchet mechanism 300, in one embodiment, the ratchet mechanism 300 includes a ratchet 310 and ratchet teeth 320. The ratchet 310 is coaxially arranged with the rotation axis 40 and connected to the clamping mechanism 200. Specifically, it can be interference-fitted and coaxially sleeved on the annular track 120 of the clamping mechanism 200, so as to be fixedly connected to the clamping mechanism 200 through the annular track 120. The ratchet teeth 320 are connected to the handle 100 and partially connected to the ratchet 310. Figure 7 As shown, it can be seen from Figure 7 As can be seen, the outer peripheral surface of the ratchet 310 and the side surface of the ratchet 320 connected to the ratchet 310 are respectively provided with meshing teeth. Therefore, a part of the ratchet 320 is connected to the outer peripheral surface of the ratchet 310 through meshing teeth.

[0058] With this configuration, the ratchet 320 can only move in one direction relative to the ratchet 310, which in turn allows the handle 100 to move in one direction relative to the clamping mechanism 200. That is, when the handle 100 rotates, it can rotate around the rotation axis 40 together with the clamping mechanism 200, or it can rotate around the rotation axis 40 alone in the opposite direction relative to the clamping mechanism 200.

[0059] More specifically, when the handle 100 rotates about the rotation axis 40 in one of the first circumferential direction (X+ direction shown in the figure) and the second circumferential direction (opposite to the first circumferential direction, X- direction shown in the figure), the handle 100, ratchet 320, ratchet 310 and clamping mechanism 200 can rotate together; when the handle 100 rotates about the other of the first circumferential direction and the second circumferential direction, the handle 100 and the ratchet 320 rotate relative to the ratchet 310 and the clamping mechanism 200, that is, the ratchet 310 and the clamping mechanism 200 do not rotate, only the handle 100 and the ratchet 320 rotate.

[0060] Furthermore, in order to enable the handle 100 to rotate independently relative to the clamping mechanism 200 when rotating along the first circumferential direction and the second circumferential direction, in a preferred embodiment, the ratchet 320 is movably disposed on the handle 100 and can move relative to the handle 100 to such a degree as Figure 7 The first position shown or as Figure 8 The second position is shown. Specifically, the ratchet 320 is rotatably mounted on the handle 100 and can rotate relative to the handle body 110 to either the first or second position. More specifically, the ratchet 320 includes an integrally connected first connecting portion 321 and a second connecting portion 322. When the ratchet 320 rotates to either the first or second position, the ratchet 320 is inclined relative to the horizontal direction shown in the figure, except that the inclination direction of the ratchet 320 in the first position is opposite to the inclination direction in the second position.

[0061] See Figure 7 and Figure 8 ,like Figure 7 As shown, when the ratchet 320 moves to the first position, the first connecting part 321 engages with the ratchet 310, and the second connecting part 322 disengages from the ratchet 310. At this time, the handle 100, ratchet 320, ratchet 310, and clamping mechanism 200 can rotate together in the first circumferential direction, or the handle 100 and ratchet 320 can rotate relative to the ratchet 310 and clamping mechanism 200 in the second circumferential direction. Figure 8 As shown, when the ratchet 320 moves to the second position, the second connecting part 322 engages with the ratchet 310, the first connecting part 321 disengages from the ratchet 310, and the handle 100, ratchet 320, ratchet 310 and clamping mechanism 200 can rotate together in the second circumferential direction, or the handle 100 and ratchet 310 can rotate relative to the ratchet 310 and clamping mechanism 200 in the first circumferential direction.

[0062] In other words, from Figure 7 and Figure 8 When viewed from the outside of the paper towards the inside, as shown... Figure 7 As shown, when the handle 100 needs to tighten the fastener, the ratchet 320 can be positioned in the first position. At this time, the handle 100 and the clamping mechanism 200 can rotate clockwise (i.e., along the first circumferential direction) to tighten the fastener. When further tightening is needed after reaching a certain angle, the handle 100 can rotate counterclockwise (i.e., along the second circumferential direction) relative to the clamping mechanism 200 to reset. Figure 8As shown, when the handle 100 needs to loosen the fastener, the ratchet 320 can be placed in the second position. At this time, the handle 100 can rotate counterclockwise (i.e., along the second circumferential direction) together with the clamping mechanism 200 to loosen the fastener. When it needs to be loosened further after being tightened to a certain angle, the handle 100 can be rotated clockwise (i.e., along the first circumferential direction) relative to the clamping mechanism 200 to reset.

[0063] Thus, it can be seen that by setting the ratchet mechanism 300, when the handle 100 and the clamping mechanism 200 rotate together, the handle 100 can clamp the fastener for tightening operations. When the handle 100 rotates in the opposite direction relative to the clamping mechanism 200, the handle 100 can return to its original angle. Therefore, after the wrench 10 has tightened to a certain angle, it is not necessary to remove the wrench 10 from the fastener being worked on and then re-engage it with the fastener.

[0064] Furthermore, in Figure 7 and Figure 8 Based on what is shown, and combined with Figure 9 and Figure 10 As shown, the handle 100 is also equipped with a toggle switch 330, which has a reversing coupling 340. Under the action of external force, the toggle switch 330 can move relative to the handle 100, thereby driving the reversing coupling 340 to move. Figure 7 and Figure 8 In one embodiment, the toggle switch 330 can rotate relative to the handle 100 under external force, driving the reversing coupling 340 to rotate, so that it abuts against the first connecting part 321 or the second connecting part 322 via the reversing coupling 340. Figure 7 and Figure 9 As shown, when the dial 330 abuts against the first connecting part 321 via the reversing coupling 340, the first connecting part 321 engages with the ratchet 310, and the ratchet 310 is in the first position; as Figure 8 and Figure 10 As shown, when the dial 330 abuts against the second connecting part 322 via the reversing coupling 340, the second connecting part 322 engages with the ratchet 310, and the ratchet 310 is in the second position. It can be seen that by simply moving the dial 330 with a finger, the ratchet 320 can be easily switched between the first and second positions, thus facilitating the reversing adjustment of the handle 100.

[0065] Additionally, it should be noted that due to the special structure of the ratchet mechanism 300, the ratchet 320 needs to maintain partial contact with the ratchet 310, but at the same time, the ratchet 320 also needs to be able to move relative to the ratchet 310 in one direction. Therefore, the ratchet 320 needs to have a moderate contact force when it contacts the ratchet 310. If the contact force is too large, the ratchet 320 will not be able to move relative to the ratchet 310. If the contact force is too small, the ratchet 320 can move relative to the ratchet 310 in both opposite directions, thus losing the function of the ratchet mechanism 300 in controlling the handle 100 to rotate unidirectionally relative to the clamping mechanism 200.

[0066] Therefore, in order for the ratchet 320 to apply a moderate abutting force when it abuts against the ratchet 310, such as Figure 7 and Figure 8 As shown, a spring-like elastic element 350 is installed inside the reversing coupling 340. The toggle switch 330 is connected to the ratchet 320 via the elastic element 350, so that the elastic element 350 can provide an elastic force that allows the ratchet 320 to elastically engage with the ratchet 310. In this way, with the help of the elastic force provided by the elastic element 350, the ratchet 320 can always abut against the ratchet 310 with a moderate elastic force, thereby allowing the ratchet mechanism 300 to control the unidirectional rotation of the handle 100 relative to the clamping mechanism 200.

[0067] Finally, it should be noted that the wrench 10 provided in this application is not limited to the structure shown in the figure, and can also be other variations. For example, the adjusting member 210 in the clamping mechanism 200 is not limited to being ring-shaped, nor is it limited to being threaded to all clamping members 220. In another embodiment, the adjusting member 210 can be column-shaped and threaded to one of the clamping members 220. Moreover, the handle 100 is not limited to the structure in which the connecting end 101 and the gripping end 102 are arranged opposite each other and the clamping mechanism 200 and the ratchet mechanism 300 are installed on the connecting end 101. It can be understood that both ends of the handle 100 can be gripping ends 102, and the clamping mechanism 200 and the ratchet mechanism 300 can be installed in the middle of the handle 100. There are no particular limitations on the above.

[0068] Therefore, the wrench 10 provided in this application has both stepless adjustment function and the function that the handle 100 can rotate independently relative to the clamping mechanism 200. Therefore, it can not only conveniently turn fasteners of different nominal diameters, but also does not require the wrench 10 to be removed from the fastener and re-engaged after turning it to a certain angle. This greatly facilitates the use of the wrench 10 and improves the user's convenience when using it for turning operations.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wrench, characterized in that, include: Handle (100); A clamping mechanism (200) is mounted on the handle (100). The clamping mechanism (200) includes an adjusting member (210) and at least two clamping members (220). All the clamping members (220) are spaced apart about a rotation axis (40) to form a clamping gap (201). The adjusting member (210) is threadedly connected to at least one of the clamping members (220). Under the action of external force, the adjusting member (210) can drive at least one of the clamping members (220) to move closer to or further away from each other with the other clamping members (220) to change the size of the clamping gap (201). A ratchet mechanism (300) is partially connected to the clamping mechanism (200) and partially mounted on the handle (100). The ratchet mechanism (300) is configured to allow the handle (100) to rotate together with the clamping mechanism (200) about the rotation axis (40), or to rotate independently relative to the clamping mechanism (200) about the rotation axis (40).

2. The wrench according to claim 1, characterized in that, The handle (100) has a mounting hole (103) coaxially arranged with the rotation axis (40). The diameter of the mounting hole (103) gradually decreases or increases along its own axial direction. Each clamping member (220) passes through the mounting hole (103) and is movably connected to the hole wall of the mounting hole (103). The adjusting member (210) is rotatably coaxially arranged with the rotation axis (40) on the handle (100). The side of each clamping member (220) facing away from the rotation axis (40) is threadedly connected to the adjusting member (210). When the adjusting member (210) rotates about the rotation axis (40), any of the clamping members (220) can move together with the other clamping members (220) to move closer to or further away from each other.

3. The wrench according to claim 2, characterized in that, The mounting hole (103) has a track groove (104) that corresponds to the clamping member (220) one by one. At least one of the track grooves (104) is inclined relative to the rotation axis (40), and each clamping member (220) is slidably limited in the corresponding track groove (104).

4. The wrench according to claim 2, characterized in that, The handle (100) has a connecting end (101), the mounting hole (103) is formed in the connecting end (101), and the outer peripheral surface of the connecting end (101) is provided with a slot (105) communicating with the mounting hole (103). At least a portion of the adjusting member (210) is rotatably embedded in the slot (105).

5. The wrench according to claim 2, characterized in that, The handle (100) includes a handle body (110) and an annular track (120). One end of the handle body (110) is provided with a through hole (111) that passes through its opposite sides. The annular track (120) is coaxially inserted into the through hole (111). The mounting hole (103) passes through the opposite sides of the annular track (120) along its own axial direction.

6. The wrench according to claim 5, characterized in that, The handle (110) is provided with a retaining ring (130) coaxially arranged with the through hole (111). The outer circumferential surface of the annular track (120) is provided with a retaining groove (121). The inner circumferential edge of the retaining ring (130) is embedded in the retaining groove (121) so that the annular track (120) and the handle (110) are fixedly connected to each other.

7. The wrench according to claim 1, characterized in that, The ratchet mechanism (300) includes a ratchet (310) and a ratchet tooth (320). The ratchet (310) is coaxially arranged with the rotation axis (40) and connected to the clamping mechanism (200). The ratchet tooth (320) is connected to the handle (100) and partially engaged with the outer peripheral surface of the ratchet (310). When the handle (100) rotates about the rotation axis (40) in one of the first circumferential direction and the second circumferential direction, the handle (100), the ratchet (320), the ratchet wheel (310) and the clamping mechanism (200) rotate together; When the handle (100) rotates about the rotation axis (40) in the other of the first circumferential direction and the second circumferential direction, the handle (100) and the ratchet (320) rotate relative to the ratchet (310) and the clamping mechanism (200); The first circumferential direction is opposite to the second circumferential direction.

8. The wrench according to claim 7, characterized in that, The ratchet (320) is movably disposed on the handle (100) and can move relative to the handle (100) to a first position or a second position; the ratchet (320) includes a first connecting part (321) and a second connecting part (322) that are connected to each other; When the ratchet (320) moves to the first position, the first connecting part (321) engages with the ratchet (310), and the handle (100), the ratchet (320), the ratchet (310), and the clamping mechanism (200) can rotate together along the first circumferential direction, or the handle (100) and the ratchet (320) can rotate relative to the ratchet (310) and the clamping mechanism (200) along the second circumferential direction; When the ratchet (320) moves to the second position, the second connecting part (322) engages with the ratchet (310), and the handle (100), the ratchet (320), the ratchet (310) and the clamping mechanism (200) can rotate together along the second circumferential direction, or the handle (100) and the ratchet (320) can rotate relative to the ratchet (310) and the clamping mechanism (200) along the first circumferential direction.

9. The wrench according to claim 8, characterized in that, The handle (100) is provided with a knob (330), which can move relative to the handle (100) under the action of external force to abut against the first connecting part (321) or the second connecting part (322); When the dial (330) abuts against the first connecting part (321), the first connecting part (321) engages with the ratchet (310); when the dial (330) abuts against the second connecting part (322), the second connecting part (322) engages with the ratchet (310).

10. The wrench according to claim 9, characterized in that, The dial (330) is connected to the ratchet (320) via an elastic element (350), the elastic element (350) being configured to provide an elastic force that enables the ratchet (320) to elastically engage with the ratchet (310).

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