Coaxial telescopic multi-size wrench

Abstract

The utility model discloses a coaxial telescopic multi-size wrench which comprises a wrench handle and a wrench outer sleeve, wrench inner sleeves and an internal hexagonal wrench are sleeved in the wrench outer sleeve, the internal hexagonal wrench and the wrench inner sleeves are respectively and movably arranged along the axial direction of the wrench outer sleeve in a telescopic mode, and sleeve locking hole groups which are coaxially arranged penetrate through the wrench inner sleeves. Limiting notches corresponding to the sleeve locking holes are formed in the outer wall of the internal hexagonal wrench, and a telescopic sleeve locking device is assembled on a wrench handle in a sliding mode. After extending out, one wrench inner sleeve and one wrench inner hexagon wrench can be locked and fixed through matching of the sleeve telescopic locking device, the sleeve locking hole set and the limiting notch, and then the wrench can be used. After the wrench is used, the sleeve telescopic locking device is separated from the sleeve locking hole set and the limiting notch, the extending wrench inner sleeve and the extending internal hexagonal wrench return and are locked, the purpose that one wrench can meet operation and use of bolts and nuts of multiple specifications is achieved, the arrangement amount of the wrench is reduced, and the wrench is convenient to store and carry.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the installation and dismounting tool of bolt, nut etc. BACKGROUND

[0002] The wrench is a kind of auxiliary tool for the installation and dismounting of bolt, nut etc.

[0003] The sleeve wrench, internal hexagonal wrench is a single set of tools, i.e. for each size bolt, nut needs to set the wrench of corresponding size, to form matched tool, bolt, nut etc. UTILITY MODEL CONTENTS

[0004] The utility model provides a coaxial telescopic multi-size wrench that is convenient and simple to adjust, has large matching capacity, helps to reduce the matching amount of dismounting tool, is convenient to store and carry.

[0005] To solve the above technical problem, the technical scheme of the utility model is: a coaxial telescopic multi-size wrench, comprising a wrench handle, one end of the wrench handle is fixedly connected with a wrench outer sleeve, at least two coaxially arranged wrench inner sleeves are sequentially sleeved in the wrench outer sleeve, an internal hexagonal wrench is sleeved in the innermost wrench inner sleeve, the internal hexagonal wrench and each wrench inner sleeve are axially telescopically movably arranged along the wrench outer sleeve, sleeve locking hole groups arranged coaxially are arranged through each wrench inner sleeve, limit notches are arranged on the outer wall of the internal hexagonal wrench corresponding to each sleeve locking hole group, a sleeve telescopic locking device is slidably assembled on the wrench handle, the sleeve telescopic locking device is insertedly assembled with the wrench outer sleeve, one sleeve locking hole group and one limit notch.

[0006] As a preferred technical scheme, sleeve telescopic positioning devices are arranged between the wrench outer sleeve and the adjacent wrench inner sleeve, between the two adjacent wrench inner sleeves, and between the inner hexagonal wrench and the wrench inner sleeve outside the inner hexagonal wrench.

[0007] As a preferred technical scheme, the sleeve locking hole groups are arranged in three groups, and the limiting notches are arranged in three groups. In the storage state, the sleeve telescopic locking device is inserted and matched with the middle sleeve locking hole group and the middle limiting notch.

[0008] As a preferred technical scheme, the sleeve telescopic positioning device comprises oppositely arranged assembly grooves and positioning grooves, the assembly grooves are provided with positioning springs and positioning balls, and the positioning balls are partially located in the positioning grooves in the positioning state.

[0009] As a preferred technical scheme, the sleeve telescopic locking device comprises a locking rod slidingly assembled along the wrench handle, and the surface of the wrench handle is provided with a locking push button connected with the locking rod.

[0010] As an improvement of the above technical scheme, the end of the locking rod away from the wrench outer sleeve is provided with a locking spring used in cooperation, and the locking spring is arranged in the wrench handle.

[0011] Due to the adoption of the above technical scheme, the coaxial telescopic multi-size wrench comprises a wrench handle, one end of the wrench handle is fixedly connected with a wrench outer sleeve, at least two coaxially arranged wrench inner sleeves are sequentially sleeved in the wrench outer sleeve, an inner hexagonal wrench is sleeved in the innermost wrench inner sleeve, the inner hexagonal wrench and each wrench inner sleeve are arranged in an axially telescopic manner along the wrench outer sleeve, sleeve locking hole groups arranged in a coaxial manner are arranged through each wrench inner sleeve, limiting notches are arranged on the outer wall of the inner hexagonal wrench corresponding to each sleeve locking hole group, a sleeve telescopic locking device is slidingly assembled on the wrench handle, and the sleeve telescopic locking device is inserted and matched with the wrench outer sleeve, one sleeve locking hole group, and one limiting notch. BRIEF DESCRIPTION OF DRAWINGS

[0012] The following drawings are merely intended to schematically illustrate and explain the present application, and do not limit the scope of the present application.

[0013] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0014] Figure 2 is a structural schematic diagram of an embodiment of the present application used as an inner hexagonal wrench;

[0015] Figure 3 is a structural schematic diagram of an embodiment of the present application used as a socket wrench;

[0016] Figure 4 is a partial sectional structural schematic diagram of an embodiment of the present application;

[0017] Figure 5 is a sectional structural schematic diagram of an embodiment of the present application of a wrench outer sleeve and a sleeving part thereof;

[0018] In the figure: 1-wrench handle; 2-wrench outer sleeve; 3-wrench inner sleeve; 4-sleeve locking hole; 5-inner hexagonal wrench; 6-limiting notch; 7-locking rod; 8-locking push button; 9-adapting long hole; 10-locking spring; 11-assembly groove; 12-positioning spring; 13-positioning ball. DETAILED DESCRIPTION

[0019] The present application will be further described below in conjunction with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present application are described by way of illustration. It is obvious for those skilled in the art that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the drawings and description are essentially illustrative, and are not intended to limit the protection scope of the claims.

[0020] As Figure 1 , Figure 2 and Figure 3As shown, the coaxial telescopic multi-size wrench comprises a wrench handle 1, one end of the wrench handle 1 is fixedly connected with a wrench outer sleeve 2, at least two coaxially arranged wrench inner sleeves 3 are sequentially sleeved in the wrench outer sleeve 2, an inner hexagonal wrench 5 is sleeved in the innermost wrench inner sleeve 3, the inner hexagonal wrench 5 and each wrench inner sleeve 3 are respectively arranged in an axially telescopic manner along the wrench outer sleeve 2, a coaxially arranged sleeve locking hole group is arranged through the sleeve wall of each wrench inner sleeve 3, a limiting notch 6 is arranged on the outer wall of the inner hexagonal wrench 5 corresponding to each sleeve locking hole group, and a sleeve telescopic locking device is slidably assembled on the wrench handle 1, and the sleeve telescopic locking device is insertedly matched with the wrench outer sleeve 2, one of the sleeve locking hole groups and one of the limiting notches 6.

[0021] In the embodiment, the inner hexagonal wrench 5 is a solid metal body in the shape of a hexagonal prism, and the wrench outer sleeve 2 and each wrench inner sleeve 3 are hollow metal bodies in the shape of a hexagonal prism, so that they are sequentially sleeved and assembled. Any one of the wrench inner sleeves 3 and the inner hexagonal wrench 5 can be extended out of the wrench outer sleeve 2, and under the cooperation of the sleeve telescopic locking device and the sleeve locking hole group, the extended wrench inner sleeve 3 and the inner hexagonal wrench 5 are locked and fixed, thereby indirectly realizing the relative fixation of the two and the wrench handle 1, so that the wrench outer sleeve 2 can be twisted under the action of the wrench handle 1, thereby completing the installation and disassembly of the corresponding specification bolts and nuts, and the adjustment is simple and convenient.

[0022] The sleeve locking hole group is provided as three groups, and correspondingly, the limiting notches 6 are provided as three, and one of the sleeve locking hole groups and the corresponding limiting notches 6 are located at the middle part of each wrench outer sleeve 2. That is, each sleeve locking hole group is provided with one sleeve locking hole 4 corresponding to each wrench inner sleeve 3, and each sleeve locking hole 4 in the same sleeve locking hole group is coaxially arranged. In the storage state, the sleeve telescopic locking device is insertedly matched with each sleeve locking hole 4 of the middle group and the middle limiting notch 6, so that the two ends of the wrench outer sleeve 2 are flush, thereby facilitating storage.

[0023] The sleeve telescopic locking device comprises a locking rod 7 slidingly assembled along the wrench handle 1, and the surface of the wrench handle 1 is provided with a locking push button 8 connected with the locking rod 7. In the embodiment, the locking rod 7 is arranged in the wrench handle 1, and the surface of the wrench handle 1 is provided with an adaptive long hole 9 facilitating the translation of the locking push button 8. The locking push button 8 can drive the synchronous translation of the locking rod 7, so as to realize the locking and releasing of the locking rod 7 to each of the wrench inner sleeve 3 and the hexagonal socket wrench 5, to timely realize the telescopic adjustment of the wrench inner sleeve 3 or the hexagonal socket wrench 5, so as to complete the selection of the wrench inner sleeve 3 or the hexagonal socket wrench 5 according to the specific size of the bolt or nut.

[0024] A locking spring 10 is arranged at the end of the locking rod 7 away from the wrench outer sleeve 2, and the locking spring 10 is arranged in the wrench handle 1. Through the elastic action of the locking spring 10, the locking rod 7 can be kept inserted into each of the wrench inner sleeve 3 and the hexagonal socket wrench 5, so that the locking and fixing effect of the locking rod 7 to each of the wrench inner sleeve 3 and the hexagonal socket wrench 5 is better.

[0025] As shown in Figure 4 and Figure 5 The wrench outer sleeve 2 and the adjacent wrench inner sleeve 3, the adjacent two wrench inner sleeves 3, and the hexagonal socket wrench 5 and the wrench inner sleeve 3 outside the hexagonal socket wrench 5 are respectively provided with a sleeve telescopic positioning device. Through the sleeve telescopic positioning device, when the wrench inner sleeve 3 or the hexagonal socket wrench 5 is extended or retracted, the sleeve telescopic locking device can be quickly matched with the corresponding sleeve locking hole 4, so as to realize smooth and quick plug-in matching, thereby completing the locking and fixing of the extended part.

[0026] Specifically, the sleeve telescopic positioning device comprises oppositely arranged assembly grooves 11 and positioning grooves, the assembly grooves 11 are provided with positioning springs 12 and positioning balls 13, and the positioning balls 13 are partially arranged in the positioning grooves in the positioning state. In order to facilitate the cooperation with the positioning balls 13, the positioning grooves are arranged as arc grooves. The specific arrangement positions of the assembly grooves 11 and the positioning grooves can be adaptively adjusted according to the adjacent two components. In order to facilitate the extension and positioning of the wrench inner sleeve 3 or the hexagonal socket wrench 5 in two directions, the sleeve telescopic positioning devices are respectively arranged corresponding to each of the sleeve locking hole groups in the embodiment, and the positioning balls 13 and the like for positioning the same component are arranged oppositely, and the positioning balls 13 and the like for positioning different components can be staggered arranged.

[0027] As shown in Figure 1As shown, the embodiment is provided with five inner sleeve 3 and one inner hexagonal wrench 5, in use, each inner sleeve 3 and inner hexagonal wrench 5 can be slid forward or backward. As shown Figure 2 As shown, when the inner hexagonal wrench 5 in the center is extended forward, the embodiment can be used as a wrench, which can be adapted to the nut with slightly larger hexagonal hole than the outer contour size of the inner hexagonal wrench 5. The inner hexagonal wrench 5 and the adjacent one, two or several inner sleeves 3 can be pushed out at the same time, as a wrench, to match the nut with different hexagonal hole. As shown Figure 3 As shown, if the third to fifth (counted from the outside to the inside) inner sleeve 3 and the inner hexagonal wrench 5 are pushed out backward while the other parts are not moved, it can be used as a hexagonal sleeve wrench, which can be adapted to the bolt with slightly smaller outer contour than the inner contour, and the third to fifth inner sleeve 3 and the inner hexagonal wrench 5 can be adapted to the nut with slightly larger hexagonal hole. Thus, by pushing out the inner sleeve 3 and the inner hexagonal wrench 5 in different layers or pushing out the inner hexagonal wrench 5 alone, the inner hexagonal wrench 5 and the multiple hexagonal sleeve wrenches can be switched for use, so as to adapt to the use of multiple specifications of bolts, nuts and the like.

[0028] In the switching state, the user pushes the locking push button 8 with one hand, so that the locking rod 7 moves away from the outer sleeve 2, and the other hand pushes the corresponding inner sleeve 3 and / or the inner hexagonal wrench 5 outward, and during the extension of the outward pushing piece, the positioning ball 13 will make a "click" sound under the ejection of the positioning spring 12 on the positioning ball 13, indicating that the outward pushing piece has been adjusted to the position, that is, the locking rod 7 corresponds to the sleeve locking hole 4 and the limiting notch 6, at this time, the force on the locking push button 8 is released, and under the elastic force of the locking spring 10, the locking rod 7 can be automatically inserted into the corresponding sleeve locking hole 4 and limiting notch 6, so as to lock and fix the outward pushing piece, and then the outward pushing piece can be used with the bolt and the nut; according to the above method, the outward pushing piece is pushed back to the original position and locked by the locking rod 7, so as to complete the storage.

[0029] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A telescoping multi-size hand spanner of coaxial type comprising a hand spanner handle, characterized in that: One end of the wrench handle is fixedly connected with a wrench outer sleeve, at least two coaxially arranged wrench inner sleeves are sequentially sleeved in the wrench outer sleeve, an inner hexagonal wrench is sleeved in the innermost wrench inner sleeve, the inner hexagonal wrench and each wrench inner sleeve are arranged in an axially telescopic manner along the wrench outer sleeve, sleeve locking hole groups arranged in a coaxial manner are arranged through each wrench inner sleeve, limit notches are arranged on the outer wall of the inner hexagonal wrench corresponding to each sleeve locking hole group, a sleeve telescopic locking device is slidingly assembled on the wrench handle, and the sleeve telescopic locking device is insertedly assembled with the wrench outer sleeve, one sleeve locking hole group and one limit notch.

2. The coaxial telescopic multi-size wrench of claim 1, wherein: Sleeve telescopic positioning devices are arranged between the wrench outer sleeve and the adjacent wrench inner sleeve, between two adjacent wrench inner sleeves, and between the inner hexagonal wrench and the wrench inner sleeve outside the inner hexagonal wrench.

3. The coaxial telescopic multi-size wrench of claim 1, wherein: The sleeve locking hole groups are arranged in three groups, and correspondingly, the limit notches are arranged in three groups; in the storage state, the sleeve telescopic locking device is insertedly assembled with the middle sleeve locking hole group and the middle limit notch.

4. The coaxial telescopic multi-size wrench of claim 1, wherein: The sleeve telescopic positioning device comprises oppositely arranged assembly grooves and positioning grooves, the assembly grooves are provided with positioning springs and positioning balls, and the positioning balls are partially located in the positioning grooves in the positioning state.

5. The coaxial telescopic multi-size wrench of claim 1, wherein: The sleeve telescopic locking device comprises a locking rod slidingly assembled along the wrench handle, and the surface of the wrench handle is provided with a locking push button connected with the locking rod.

6. The coaxial telescopic multi-size wrench of claim 5, wherein: One end of the locking rod away from the wrench outer sleeve is provided with a locking spring used in cooperation, and the locking spring is arranged in the wrench handle.

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