CN211278163U

CN211278163U - Adjustable spanner

Info

Publication number: CN211278163U
Application number: CN201922157329.XU
Authority: CN
Inventors: 刘伟; 赵晓琪; 路秀海
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-08-18
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses an adjustable spanner, be in including pressing the portion and rotationally the holding head on the portion, be provided with the centre gripping hole that is used for centre gripping target object on the holding head, with the target object put in the centre gripping hole, rotate the holding head or the portion so that both are close to gradually to the target object by the inside wall in centre gripping hole with press plate crowded tight centre gripping, continue to rotate the holding head or pressing the portion can the rotating target object. The utility model discloses can adapt to the screw rod or the nut of multiple size and use, solve the shortcoming of the single specification of traditional dead spanner, and its convenient to use, application scope is wide, is difficult for the slippage in the use, and the nut that does not wear and tear, and its preparation convenient and fast, the cost is lower.

Description

Adjustable spanner

Technical Field

The utility model relates to a hardware and tools's technical field especially relates to an adjustable spanner.

Background

A wrench is a common installation and removal tool. Hand tools for turning bolts, screws, nuts and other threaded fasteners for tightening openings or trepanning of bolts or nuts using the principle of leverage. The wrench is generally provided with a clamping portion at one end or both ends of the shank portion, the clamping portion clamps the bolt or the nut, and the bolt or the nut can be screwed by applying an external force to the shank portion along a thread rotation direction when the wrench is used. Existing wrenches are basically divided into two types, a dead wrench and an "adjustable" wrench. The specification of the 'dead' wrench is fixed, the wrench opening is correspondingly selected according to different specifications of the nut, the existing nut has more specifications, the specification of the dead wrench is also five-flower eight-door, the specification of the nut must be accurately positioned in advance before the dead wrench is utilized, and certain difficulty and inconvenience are caused to the use of the nut or the wrench for people who are not familiar with the nut or the wrench. The width of an opening of an existing adjustable wrench can be adjusted within a certain size range, bolts or nuts of different specifications can be screwed, and the adjustable wrench is more convenient, more convenient and more flexible than a dead wrench to a certain extent. However, the clamping range is relatively complex to adjust, and sometimes even the clamping phenomenon occurs, so that a wrench which is more convenient and easier to operate is needed to adapt to the requirements of a construction site.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjustable spanner, this adjustable spanner adjusts the convenience, and the cost of manufacture is lower, can adapt to the use of the bolt and the nut of multiple specification.

The utility model discloses a following technical scheme realizes:

an adjustable wrench comprises a pressing part and a clamping head rotatably arranged on the pressing part, wherein a clamping hole used for clamping a target object is formed in the clamping head, the target object is placed in the clamping hole, the clamping head or the pressing part is rotated to enable the clamping head or the pressing part to gradually approach to the inner side wall of the clamping hole of the target object and to be tightly squeezed and clamped by a pressing plate, and the clamping head or the pressing part is continuously rotated to rotate the target object.

Furthermore, sawteeth are arranged on the inner side wall of the clamping hole.

Furthermore, the side wall of the pressing part, which is parallel to the axial direction of the clamping hole, is provided with sawteeth.

Furthermore, the clamping head is arranged on the pressing part through a pin shaft, and the clamping head can rotate around the pin shaft.

Further, still include the handle, the handle is connected with the portion of suppressing.

Further, the included angle between the handle and the pressing part is 120 degrees.

Further, the handle and the pressing part are of an integrally formed structure.

Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model discloses can be according to the screw rod or the nut size of will twisting, rotate and support the clamp plate and make and support the clamp plate and be close to the clamping head gradually and then adjust and support the position that the clamp plate covered on the centre gripping hole, thereby squeeze the inside wall that supports and press the centre gripping hole with the screw rod and support between the clamp plate and be provided with the lateral wall of sawtooth, continue to rotate the handle, screw up or become flexible nut or screw rod, therefore the utility model discloses can adapt to the screw rod or the nut use of multiple size, solve the shortcoming of traditional dead spanner single specification; in addition, the utility model has simple operation, convenient use, wide application range, difficult slippage in the use process, no abrasion of the nut, convenient and quick manufacture and lower cost; when in use, the screw rod or the nut is rotated by utilizing the lever principle, thereby saving time and labor.

Drawings

Fig. 1 is a schematic structural view of an adjustable wrench according to an embodiment of the present invention;

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1, the utility model discloses an adjustable wrench, including handle 1, the pressure plate 2 that supports that is connected with handle 1 and rotationally set up the holding head 3 that supports on the pressure plate 2. In this embodiment, the clamping head 3 is a circular ring, and a clamping hole 30 for clamping a bolt or a nut is provided at a central position of the clamping head 3. The clamping head 3 is arranged on the top surface of the pressing plate 2 through a pin shaft 4, so that the clamping head 3 and the pressing plate 2 can rotate around the pin shaft 4. When the size of the centre gripping space of centre gripping hole 30 is reduced with the adaptation bolt or nut as needs, rotate the centre gripping head 3 or support clamp plate 2 and cover the position on centre gripping hole 3 with adjusting to support clamp plate 2, can make the centre gripping space of centre gripping hole 3 can adapt to the size of bolt or nut, and then carry out the crowded centre gripping. In order to clamp the bolt or the nut conveniently, a plurality of saw teeth 20 are arranged on the side surface, parallel to the axial direction of the clamping hole 30, of the pressing plate 2, in addition, a plurality of saw teeth 31 are also arranged on the inner side wall of the clamping hole 30, and the friction force between the screw rod or the nut and the inner side wall of the pressing plate 2 and the inner side wall of the clamping hole 3 can be increased due to the saw teeth, so that the sliding is prevented.

In order to save more labor during use, the handle 1 is arranged on the end side of the abutting plate 2, and the handle 1 and the abutting plate 2 form an included angle of 120 degrees, so that the lever principle is utilized when the handle 1 is rotated, and more labor is saved. And in order to prevent the handle 1 from being damaged easily when in use, the handle 1 and the pressing plate 2 are of an integrally formed structure, so that the connection fastness of the handle 1 and the pressing plate is strengthened.

In using the adjustable wrench of the present embodiment, the nut or screw to be screwed is prepared in place and then placed in the clamping hole 30 of the clamping head 3. Thereby twist grip 1 and make to support clamp plate 2 and be close to clamping head 3 gradually and then adjust to support clamp plate 2 and cover the position on centre gripping hole 30 to support pressing the crowded tight nut or screw rod between the inside wall at centre gripping hole 30 and the lateral wall that supports clamp plate 2 and be provided with sawtooth 20, continue twist grip 1, screw up nut or screw rod or become flexible.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood that the invention is not limited thereto, and that various modifications and changes can be made by those skilled in the art without departing from the principles of the invention.

Claims

1. The adjustable wrench is characterized by comprising a pressing part and a clamping head which is rotatably arranged on the pressing part, wherein a clamping hole for clamping a target object is formed in the clamping head, the target object is placed in the clamping hole, the clamping head or the pressing part is rotated to enable the clamping head or the pressing part to gradually approach to the target object and be tightly squeezed and clamped by the inner side wall of the clamping hole and the pressing part, and the target object can be rotated by continuously rotating the clamping head or the pressing part.

2. The adjustable wrench according to claim 1, wherein the gripping hole is provided with serrations on an inner side wall thereof.

3. The adjustable wrench according to claim 1, wherein the pressing portion has a side wall axially parallel to the holding hole and provided with serrations.

4. The adjustable wrench according to claim 1, wherein the gripping head is disposed on the pressing portion via a pin, and the gripping head is rotatable around the pin.

5. The adjustable wrench as claimed in claim 1, further comprising a handle connected to the pressing portion.

6. The adjustable wrench as claimed in claim 5, wherein the angle between the handle and the pressing portion is 120 °.

7. The adjustable wrench as claimed in claim 5, wherein the handle and the pressing portion are integrally formed.