An adjustable wrench

Abstract

This utility model proposes an adjustable wrench, including a handle, a curved arm, and a hook. One end of the curved arm is fixed to the handle, and the other end of the curved arm is fixed to the hook. The handle has through-holes at both ends, and a clamping assembly is provided in the mounting channel. The clamping assembly includes: a clamping arm, which is slidably disposed in the mounting channel; and an adjusting member, which is mounted on the handle and used to adjust the distance between the clamping arm and the hook. In this design, both the clamping arm and the adjusting member are installed in the mounting channel inside the handle, thus not occupying external space. When the handle is rotated, the rotation space of the handle is not reduced, ensuring the original operating space of the handle.

Description

Technical Field

[0001] This utility model relates to the field of bicycle manufacturing and processing technology, specifically to an adjustable wrench. Background Technology

[0002] In bicycle manufacturing, round nuts, or circular tubular or ring-shaped parts with internal threads, are frequently tightened and installed using hook wrenches. The hook of the wrench locks into the groove of the round nut, and the nut is rotated by manually adjusting the handle. However, existing hook wrenches are not universal; when the outer diameter of the round nut changes, the hook wrench needs to be replaced. To address this technical problem, several solutions have been proposed in the prior art. For example, application number CN95205820.0, application date March 17, 1995, publication number CN2222041Y, entitled "A Hook Wrench," describes a solution consisting of a hook head, a bow arm, a handle, and an adjusting mechanism. The hook wrench has two guides, and a screw passes through these guides and is threadedly connected to an adjusting nut between them. Rotating the adjusting nut causes the screw to move back and forth within the guides, changing the distance between the screw contact and the hook head. This adjustable hook wrench is designed in four sizes to be suitable for attaching and detaching M10 to M200 round nuts. While this solution reduces the number of hook wrench sizes and saves tool materials, the guides, adjusting nut, and screw are located outside the handle, occupying a significant amount of handle movement space. Therefore, the angle of each handle rotation is reduced, thus decreasing the wrench's efficiency.

[0003] Therefore, the technical problem that this application needs to solve is: how to avoid reducing the rotation space of the handle while ensuring the universality of the wrench. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes an adjustable wrench. In this solution, the clamping arm and the adjusting component are installed in the mounting channel inside the handle, so they do not occupy external space. When the handle is rotated, the rotation space of the handle is prevented from being reduced, thus ensuring the original movement space of the handle.

[0005] Specifically, this utility model proposes an adjustable wrench, including a handle, a curved arm, and a hook. One end of the curved arm is fixed to the handle, and the other end of the curved arm is fixed to the hook. The handle has through-holes at both ends, and a clamping component is provided in the through-hole. The clamping component includes:

[0006] A clamping arm, which is slidably disposed in the mounting channel;

[0007] An adjusting member is mounted on the handle and is used to adjust the distance between the clamping arm and the hook.

[0008] Preferably, the installation channel includes a guide channel and an adjustment channel, and the surface of the handle is provided with a clearance opening that communicates with the adjustment channel;

[0009] The adjusting component includes a screw and an adjusting sleeve. The adjusting sleeve is rotatably mounted in the adjusting channel, and a portion of the curved surface of the adjusting sleeve passes through the clearance opening and is exposed outside the handle. The adjusting sleeve is provided with a threaded hole.

[0010] The screw is installed in the threaded hole, and one end of the screw facing the hook is fixed to the clamping arm, and the clamping arm is slidably disposed in the guide channel.

[0011] Preferably, the projections of the clamping arm and the guide channel along the length direction of the handle are polygons.

[0012] Preferably, the projections of the clamping arm and the guide channel along the length of the handle are both rectangles.

[0013] Preferably, the curved arm is semi-circular.

[0014] Preferably, the clamping arm has a slot on the side facing the hook.

[0015] Preferably, the slot is a V-shaped slot.

[0016] Preferably, a filling post is fixed in the installation channel, and the filling post is located on the side of the adjusting sleeve away from the hook head;

[0017] The filling column is provided with a clearance hole, which is used to provide clearance space for the movement of the screw.

[0018] Preferably, the filling column and the handle are fixed by threaded parts, or the filling column and the handle are welded together. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional structural diagram of the adjustable wrench proposed in this embodiment;

[0021] Figure 2 This is a schematic diagram of the connection relationship between the clamping arm and the screw in this embodiment;

[0022] Figure 3 This is a side view of the adjustable wrench proposed in this embodiment;

[0023] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0024] Figure 5 yes Figure 4 A magnified view of a portion of point B in the middle;

[0025] Figure 6 This is a schematic diagram showing the positions of the guide channel and the adjustment channel in this embodiment.

[0026] The reference numerals used in the attached figures are as follows:

[0027] 11-Handle; 12-Curved arm; 13-Hook; 14-Clamping arm; 15-Guide channel; 16-Adjustment channel; 17-Allowing opening; 18-Screw; 19-Adjusting sleeve; 20-Threaded hole; 21-Slot; 22-Filling post; 23-Allowing hole. Detailed Implementation

[0028] The technical solutions of this application will be further described below with reference to specific embodiments, but this application is not limited to these embodiments.

[0029] like Figures 1 to 6 As shown, this embodiment proposes an adjustable wrench, including a handle 11, a curved arm 12, and a hook head 13. One end of the curved arm 12 is fixed to the handle 11, and the other end of the curved arm 12 is fixed to the hook head 13. The handle 11 has through-holes at both ends, and a clamping component is provided in the through-hole. The clamping component includes:

[0030] A clamping arm 14 is slidably disposed in the mounting channel;

[0031] An adjusting member is mounted on the handle 11 and is used to adjust the distance between the clamping arm 14 and the hook head 13.

[0032] In this design, the hook 13 is inserted into a slot on the outer circumference of a round nut, and the rotation of the round nut is adjusted by rotating the handle 11. The distance between the clamping arm 14 and the hook 13 is controlled by an adjusting component, allowing the clamping arm 14 to clamp the round nut, thus enabling clamping and adjustment of round nuts of different sizes.

[0033] In addition, the clamping arm 14 and the adjusting component in this solution are installed in the mounting channel inside the handle 11, so they do not occupy external space. When the handle 11 is rotated, the rotation space of the handle 11 is prevented from being reduced, thus ensuring the original movement space of the handle 11.

[0034] As one embodiment of this example, the installation channel includes a guide channel 15 and an adjustment channel 16, and the surface of the handle 11 is provided with a clearance opening 17 that communicates with the adjustment channel 16.

[0035] The adjusting component includes a screw 18 and an adjusting sleeve 19. The adjusting sleeve 19 is rotatably mounted in the adjusting channel 16, and a portion of the curved surface of the adjusting sleeve 19 passes through the relief opening 17 and is exposed outside the handle 11. The adjusting sleeve 19 is provided with a threaded hole 20.

[0036] The screw 18 is installed in the threaded hole 20, and one end of the screw 18 facing the hook 13 is fixed on the clamping arm 14, and the clamping arm 14 is slidably disposed in the guide channel 15.

[0037] This design employs a threaded adjustment mechanism, which allows for full adjustment of the advancing distance of the clamping arm 14, offering the advantage of ease of use.

[0038] When the adjusting sleeve 19 rotates, the screw 18 does not rotate under the action of the clamping arm 14, but only moves in a straight line, thereby changing the positional relationship between the screw 18 and the adjusting sleeve 19.

[0039] Furthermore, the adjustment channel 16 has two arc surfaces at both ends along the width direction of the handle 11, and an avoidance opening 17 is provided between the two arc surfaces, so that part of the curved surface of the adjustment sleeve 19 is exposed outside the handle 11, so that the adjustment sleeve 19 can be manually rotated for adjustment.

[0040] Furthermore, the filling post 22 and the handle 11 are fixed by a threaded component, wherein the threaded component is a screw or a threaded rod, or the filling post 22 and the handle 11 are welded together. In this solution, the filling post 22 is used to limit the position of the adjusting sleeve 19 and prevent the adjusting sleeve 19 from moving in a straight line. This effectively ensures the operation of the adjusting sleeve 19.

[0041] In one embodiment of this invention, the projections of the clamping arm 14 and the guide channel 15 along the length of the handle 11 are polygons. Furthermore, the clamping arm 14 and the guide channel 15 are fitted together, thereby preventing the clamping arm 14 from rotating.

[0042] Furthermore, the projections of the clamping arm 14 and the guide channel 15 along the length direction of the handle 11 are both rectangles.

[0043] The technical advantage of this solution is that it can fully guarantee the linear movement of the clamping arm 14 and prevent the clamping arm 14 from rotating in the guide channel 15.

[0044] In one embodiment of this invention, the curved arm 12 is semi-circular.

[0045] As one embodiment of this invention, the clamping arm 14 is provided with a slot 21 on the side facing the hook head 13; further, the slot 21 is a V-shaped slot.

[0046] As one embodiment of this example, a filling column 22 is fixed in the installation channel, and the filling column 22 is located on the side of the adjusting sleeve 19 away from the hook head 13;

[0047] The filling column 22 is provided with a clearance hole 23, which is used to provide clearance space for the movement of the screw 18.

[0048] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An adjustable wrench, comprising a handle (11), a curved arm (12), and a hook (13), wherein one end of the curved arm (12) is fixed to the handle (11), and the other end of the curved arm (12) is fixed to the hook (13), characterized in that, The handle (11) has through-holes at both ends, and the through-holes are provided with a clamping component, which includes: A clamping arm (14) is slidably disposed in the mounting channel; An adjusting member is mounted on the handle (11) and is used to adjust the distance between the clamping arm (14) and the hook (13).

2. The adjustable wrench according to claim 1, characterized in that, The installation channel includes a guide channel (15) and an adjustment channel (16), and the surface of the handle (11) is provided with an avoidance opening (17) that communicates with the adjustment channel (16). The adjusting component includes a screw (18) and an adjusting sleeve (19). The adjusting sleeve (19) is rotatably mounted in the adjusting channel (16), and a portion of the curved surface of the adjusting sleeve (19) passes through the relief opening (17) and is exposed outside the handle (11). The adjusting sleeve (19) is provided with a threaded hole (20). The screw (18) is installed in the threaded hole (20), and one end of the screw (18) facing the hook (13) is fixed on the clamping arm (14), and the clamping arm (14) is slidably disposed in the guide channel (15).

3. The adjustable wrench according to claim 2, characterized in that, The projections of the clamping arm (14) and the guide channel (15) along the length of the handle (11) are polygons.

4. The adjustable wrench according to claim 3, characterized in that, The projections of the clamping arm (14) and the guide channel (15) along the length of the handle (11) are rectangles.

5. The adjustable wrench according to claim 1, characterized in that, The curved arm (12) is semi-circular.

6. The adjustable wrench according to claim 1, characterized in that, The clamping arm (14) has a slot (21) on the side facing the hook (13).

7. The adjustable wrench according to claim 6, characterized in that, The slot (21) is a V-shaped slot.

8. The adjustable wrench according to claim 2, characterized in that, A filling column (22) is fixed in the installation channel, and the filling column (22) is located on the side of the adjusting sleeve (19) away from the hook (13); The filling column (22) is provided with a clearance hole (23), which is used to provide clearance space for the movement of the screw (18).

9. The adjustable wrench according to claim 8, characterized in that, The filling column (22) and the handle (11) are fixed by threaded parts, or the filling column (22) and the handle (11) are welded together.

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