Wrench with length convenient to adjust

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By designing a wrench that is easy to adjust in length, and utilizing a telescopic part and a meshing wheel structure, the problem of inconvenient operation of existing wrenches in narrow spaces has been solved, enabling flexible screw removal and length adjustment.

CN224012194UActive Publication Date: 2026-03-20QINGDAO AUDREY NEW MATERIAL TECHNOLOGY CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-04-21
Publication Date: 2026-03-20

AI Technical Summary

Technical Problem

Existing wrenches are inconvenient to operate in narrow spaces, requiring the handle to be turned to rotate the entire wrench around the screw axis, which places high demands on space.

Method used

A wrench with adjustable length was designed. Through the telescopic part and the meshing wheel structure, the plug is inserted into the screw slot and rotated. The screw can be disassembled or tightened by the sliding connection of the limiting cylinder and the movable rod. The telescopic part can be adjusted in length to adapt to different spaces.

Benefits of technology

It allows for easy screw removal and installation in confined spaces, and the wrench length can be flexibly adjusted to meet different usage needs.

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Abstract

The utility model relates to the technical field of wrench tools, and discloses a wrench convenient for length adjustment, which comprises a handle part, a telescopic part is arranged on the inner side of the handle part, the handle part comprises a torsion wheel and a limiting cylinder fixedly connected to the end face of one side, facing the telescopic part, of the torsion wheel, and a grab handle is sleeved on the outer side of the limiting cylinder. A connecting box is fixedly arranged on the end face of the side, away from the torsion wheel, of the grab handle. The telescopic part comprises a mounting column and a mounting main shaft rotationally arranged in the mounting column, the mounting column is arranged on the inner side of the connecting box in a sliding mode, and the telescopic part further comprises a movable rod arranged in the limiting cylinder in a penetrating mode; a rotating part is connected to the outer end face of the mounting column and comprises a plug arranged on the outer side of the mounting column. According to the wrench convenient to adjust the length, the use length can be adjusted according to actual use requirements, meanwhile, by controlling the torsion wheel to rotate, the plug can drive a screw to rotate so as to disassemble or fasten the screw, and disassembly and assembly of the screw can be conveniently completed in a narrow space.

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Description

TECHNICAL FIELD

[0001] The utility model relates to spanner tool technical field, concretely is a spanner convenient for length adjustment. BACKGROUND

[0002] Spanner is a commonly used installation and disassembly tool, is the hand tool of using lever principle and turning screw bolt, screw, nut and other threaded fastening bolt or nut opening or sleeve hole fastener.

[0003] The commonly used spanner is usually made with the opening or sleeve hole of clamping bolt or nut at one end or both ends of the handle part, and when using, the external force is applied to the handle part along the thread rotation direction, so that the bolt or nut can be turned, and some spanners in the prior art can insert the embedding piece into the screw groove to rotate the screw to achieve the effect of disassembling or fastening the screw.

[0004] However, most of the spanners on the market currently adopt the mode of rotating the handle to drive the whole spanner to rotate around the axis of the screw, thereby disassembling or fastening the screw, which has certain requirements for the operation space, is not convenient for operation in narrow space, and thus has certain use defects, therefore, we propose a spanner convenient for length adjustment to solve the problems in the above background technology. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a spanner convenient for length adjustment to solve the problems in the above background technology that most of the existing spanners adopt the mode of rotating the handle to drive the whole spanner to rotate around the axis of the screw, thereby disassembling or fastening the screw, which has certain requirements for the operation space, and is not convenient for operation in narrow space.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a spanner convenient for length adjustment, comprising a handle part, the inner side of the handle part is provided with a telescopic part, the handle part comprises a torsion wheel and a limiting cylinder fixedly connected to the side end face of the torsion wheel towards the telescopic part, the outer side of the limiting cylinder is sleeved with a handle, and a connecting box is fixedly arranged on the side end face of the handle away from the torsion wheel.

[0007] The telescopic part comprises a mounting column and a mounting main shaft rotatably arranged in the mounting column, the mounting column is slidably arranged on the inner side of the connecting box, the telescopic part further comprises a movable rod penetratingly arranged in the limiting cylinder, the movable rod is fixedly connected between the mounting main shaft, and a first connecting wheel is fixedly connected to the end of the mounting main shaft away from the movable rod.

[0008] The outer end face of the mounting column is connected with a rotating part, the rotating part comprises a plug arranged on the outer side of the mounting column, and the rotating part further comprises a second connecting wheel rotatably connected in the mounting column.

[0009] As the preferred technical scheme of the utility model, the torsion wheel and the limiting cylinder are arranged to rotate relative to the handle.

[0010] As the preferred technical scheme of the utility model, the connecting box is uniformly provided with through hole structures on the outer end face on one side along the axis direction of the mounting main shaft, and the inside of the through hole structures is threadedly connected with bolt structures that play a connecting role on the connecting box and the mounting column.

[0011] As the preferred technical scheme of the utility model, the shaft section of the movable rod is arranged in a rectangular shape, the inside of the torsion wheel and the limiting cylinder is provided with through groove structures that are arranged in cooperation with the movable rod, and the movable rod is slidably connected with the torsion wheel and the limiting cylinder through the through groove structures.

[0012] As the preferred technical scheme of the utility model, the first engaging wheel and the second engaging wheel are arranged in a perpendicular manner along the axis direction, and the first engaging wheel and the second engaging wheel are connected in a meshing manner.

[0013] As the preferred technical scheme of the utility model, the second engaging wheel is fixedly arranged with a connecting head on one end of the mounting column, and the inside of the connecting head is inserted with an engaging pin.

[0014] As the preferred technical scheme of the utility model, the rotating part further comprises a plug that is fixedly connected to the end of the engaging pin that is away from the second engaging wheel.

[0015] As the preferred technical scheme of the utility model, the outer end face of the engaging pin is connected with a bolt structure, and the outer end face of the connecting head is provided with a screw hole structure that is arranged in cooperation with the bolt structure.

[0016] Compared with the prior art, the utility model has the beneficial effects that the wrench with length adjustment function can adjust the use length according to actual use requirements, and the plug can drive the screw to rotate to disassemble or fasten the screw by controlling the rotation of the torsion wheel, so that the screw can be disassembled or assembled in a narrow space.

[0017] 1. The plug is inserted into the screw head sink groove that needs to be rotated and disassembled, the handle is fixed and the torsion wheel is rotated, the limiting cylinder is rotated in the inside of the handle, the movable rod is synchronously rotated by the rotation of the limiting cylinder because the movable rod cannot rotate relative to the limiting cylinder, and the movable rod drives the first engaging wheel to rotate in the inside of the mounting column through the mounting main shaft.

[0018] Furthermore, since the first connecting wheel and the second connecting wheel form an meshing connection, the first connecting wheel can drive the connecting head to rotate on the outside of the mounting post through the second connecting wheel. The plug rotates inside the groove of the screw head that needs to be removed, thereby driving the screw to rotate and completing the removal or tightening of the screw. This solves the problem that most existing wrenches use the method of turning the handle to drive the wrench to rotate around the axis of the screw, which requires a certain amount of operating space and is not convenient for operation in narrow spaces.

[0019] 2. The mounting post is slidably set inside the connecting box, and the movable rod can move along the axis inside the limiting cylinder. That is, the telescopic part can extend and retract relative to the handle. By rotating and disassembling the bolt structure at the connection between the connecting box and the mounting post, the telescopic part can move axially inside the handle. After adjusting the telescopic part to the appropriate length, the mounting post and the connecting box are fixedly connected by the bolt structure, which makes it easy to adjust the length of the wrench according to actual usage needs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the handle and telescopic part of this utility model;

[0022] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0023] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the structure of the mounting column of this utility model in a partial cross-section.

[0025] Figure 6 This is a schematic diagram of the overall structure of the mounting column of this utility model in its extended state.

[0026] In the diagram: 100, handle; 110, torsion wheel; 120, grip; 130, limit sleeve; 140, connecting box; 200, telescopic part; 210, mounting post; 220, movable rod; 230, mounting spindle; 240, first connecting wheel; 300, rotating part; 310, second connecting wheel; 320, connector; 330, connecting pin; 340, plug. Detailed Implementation

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0028] Please refer to Figures 1-6 The present application provides a technical scheme: a wrench convenient for length adjustment, comprising a handle part 100, specifically as shown in Figure 1 The inner side of the handle part 100 is provided with an extension part 200, the handle part 100 comprises a twist wheel 110 and a limiting cylinder 130 fixedly connected to the side end face of the twist wheel 110 towards the extension part 200, and the outer side of the limiting cylinder 130 is sleeved with a handle 120, in combination with Figure 2 and Figure 3 The outer surface of the limiting cylinder 130 is in a cylindrical shape, the twist wheel 110 and the limiting cylinder 130 are both rotationally arranged relative to the handle 120, and by controlling the rotation of the twist wheel 110 relative to the handle 120, the limiting cylinder 130 can be rotated inside the handle 120;

[0029] Specifically as shown in Figure 2 The extension part 200 comprises a mounting column 210 and a mounting main shaft 230 rotationally arranged inside the mounting column 210, at the same time, the extension part 200 further comprises a movable rod 220 penetratingly arranged inside the limiting cylinder 130, and the movable rod 220 is fixedly connected with the mounting main shaft 230, in combination with Figure 2 and Figure 3 The shaft section of the movable rod 220 is in a rectangular shape, at the same time, the inside of the twist wheel 110 and the limiting cylinder 130 are both provided with a through groove structure matched with the movable rod 220, and the movable rod 220 is in sliding connection with the twist wheel 110 and the limiting cylinder 130 through the through groove structure, since the movable rod 220 cannot rotate relative to the limiting cylinder 130, the movable rod 220 can be synchronously rotated by the rotation of the limiting cylinder 130, and the movable rod 220 can move along the axis inside the limiting cylinder 130;

[0030] Further, the mounting main shaft 230 is fixedly connected with a first connecting wheel 240 at the end away from the movable rod 220, in combination with Figure 3 and Figure 4As shown in the figure, the outer end surface of the mounting column 210 is connected with a rotating part 300, and the rotating part 300 comprises a second engaging wheel 310 which is rotatably connected inside the mounting column 210, and the first engaging wheel 240 is arranged vertically to the axis direction of the second engaging wheel 310, and the first engaging wheel 240 and the second engaging wheel 310 are connected by meshing, and the second engaging wheel 310 is fixedly provided with a connecting head 320 on one end of the mounting column 210, and specifically as Figure 5 As shown in the figure, the movable rod 220 can drive the first engaging wheel 240 to rotate inside the mounting column 210 through the mounting spindle 230, so as to drive the connecting head 320 to rotate outside the mounting column 210 through the second engaging wheel 310;

[0031] Further, the rotating part 300 further comprises an engaging pin 330 which is inserted into the connecting head 320, and one end of the engaging pin 330 away from the second engaging wheel 310 is fixedly connected with a plug 340, and the outer end surface of the engaging pin 330 is penetrated with a bolt structure, and the outer end surface of the connecting head 320 is provided with a threaded hole structure matched with the bolt structure, and specifically as Figure 5 As shown in the figure, the bolt structure fixes the connecting head 320 and the engaging pin 330, so that the connecting head 320 can drive the plug 340 to rotate through the engaging pin 330;

[0032] Specifically as Figure 2 And Figure 3 As shown in the figure, the handle 120 is fixedly provided with a connecting box 140 on the side end surface away from the twisting wheel 110, and the outer end surface of one side of the connecting box 140 is uniformly provided with a through hole structure along the axis direction of the mounting spindle 230, and the inside of the through structure is threadedly connected with a bolt structure which connects the connecting box 140 and the mounting column 210, and the mounting column 210 is slidingly arranged inside the connecting box 140, and the outer end surface of the mounting column 210 is provided with a counterbore structure matched with the bolt structure, and specifically as Figure 1 And Figure 6 As shown in the figure, by rotating and dismounting the bolt structure, the telescopic part 200 can be moved axially inside the handle part 100, and after adjusting the telescopic part 200 to a suitable length, the mounting column 210 and the connecting box 140 are fixedly connected through the bolt structure, so as to adjust the actual use length of the wrench;

[0033] The working principle of the utility model is: when using the wrench convenient for length adjustment, first, the plug 340 is inserted into the screw head sink inside which needs to be rotated and disassembled, the fixed handle 120 is fixed, the rotation of the control twist wheel 110 relative to the handle 120 can make the limiting cylinder 130 rotate inside the handle 120, since the movable rod 220 cannot rotate relative to the limiting cylinder 130, the rotation of the limiting cylinder 130 can drive the movable rod 220 to rotate synchronously, and then the movable rod 220 drives the first connecting wheel 240 to rotate inside the installation column 210 through the installation main shaft 230;

[0034] In combination Figure 4 With Figure 5 As shown in the first connecting wheel 240 and the second connecting wheel 310 are connected, the first connecting wheel 240 can drive the connecting head 320 to rotate outside the installation column 210 through the second connecting wheel 310, the plug 340 is rotated inside the screw head sink which needs to be disassembled or fastened, and the disassembly or fastening of the screw is completed.

[0035] Further, since the installation column 210 is slidably arranged inside the connecting box 140, and the movable rod 220 can move along the axis inside the limiting cylinder 130, that is, the telescopic part 200 can be telescopic relative to the handle part 100, by rotating and disassembling the bolt structure of the connecting part of the connecting box 140 and the installation column 210, the telescopic part 200 can be moved along the axis inside the handle part 100, after adjusting the telescopic part 200 to the appropriate length, the installation column 210 and the connecting box 140 are fixed and connected through the bolt structure, and the actual use length of the wrench can be adjusted.

[0036] Finally, it should be pointed out that: the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A wrench with adjustable length, comprising a handle portion (100), characterized in that: The handle (100) has a telescopic part (200) on its inner side. The handle (100) includes a torsion wheel (110) and a limiting cylinder (130) fixedly connected to the end face of the torsion wheel (110) facing the telescopic part (200). A grip (120) is sleeved on the outer side of the limiting cylinder (130), and a connecting box (140) is fixedly provided on the end face of the grip (120) facing away from the torsion wheel (110). The telescopic part (200) includes a mounting post (210) and a mounting spindle (230) rotatably disposed inside the mounting post (210). The mounting post (210) is slidably disposed inside the connecting box (140). The telescopic part (200) also includes a movable rod (220) that passes through the limiting cylinder (130). The movable rod (220) is fixedly connected to the mounting spindle (230). A first connecting wheel (240) is fixedly connected to one end of the mounting spindle (230) away from the movable rod (220). The outer end face of the mounting post (210) is connected to a rotating part (300). The rotating part (300) includes a plug (340) disposed on the outside of the mounting post (210). The rotating part (300) also includes a second connecting wheel (310) rotatably connected inside the mounting post (210).

2. The wrench with adjustable length according to claim 1, characterized in that: Both the torsion wheel (110) and the limiting cylinder (130) are rotatably arranged relative to the handle (120).

3. A wrench with adjustable length according to claim 2, characterized in that: The connecting box (140) has a through hole structure evenly provided on one side of the outer end face along the axis of the mounting spindle (230), and the internal thread of the through hole structure is connected to a bolt structure that connects the connecting box (140) and the mounting post (210). The outer end face of the mounting post (210) has a countersunk hole structure that mates with the bolt structure.

4. A wrench with adjustable length according to claim 3, characterized in that: The axial section of the movable rod (220) is rectangular. The interior of the torsion wheel (110) and the limiting cylinder (130) are provided with through groove structures that cooperate with the movable rod (220). The movable rod (220) is slidably connected to the torsion wheel (110) and the limiting cylinder (130) through the through groove structure.

5. A wrench with adjustable length according to claim 4, characterized in that: The first connecting wheel (240) and the second connecting wheel (310) are arranged perpendicularly to each other, and the first connecting wheel (240) and the second connecting wheel (310) are connected by meshing.

6. A wrench with adjustable length according to claim 5, characterized in that: The second connecting wheel (310) has a connector (320) fixedly installed on one end of the mounting post (210), and a connecting pin (330) is inserted into the inside of the connector (320).

7. A wrench with adjustable length according to claim 6, characterized in that: The rotating part (300) also includes a plug (340) fixedly connected to the end of the connecting pin (330) away from the second connecting wheel (310).

8. A wrench with adjustable length according to claim 7, characterized in that: The outer end face of the connecting pin (330) is connected to a bolt structure, and the outer end face of the connector (320) is provided with a screw hole structure that cooperates with the bolt structure.