CN220660690U - Structure of wrench with rotatable head - Google Patents

Abstract

The utility model discloses a wrench structure with a rotatable head, which comprises a wrench body and a wrench head, wherein the wrench head is in rotary connection with the wrench body, a first stop pawl and a second stop pawl for limiting the rotation angle of the wrench head are arranged on the wrench body, and ratchet teeth matched with the first stop pawl and the second stop pawl are arranged on the wrench head.

Description

Structure of wrench with rotatable head

Technical Field

The utility model belongs to the technical field of wrenches, and particularly relates to a wrench structure with a rotatable head.

Background

In a specific small space operation such as an airplane or an automobile, a wrench head and a wrench body are required to have a certain angle, so that fastening operation can be performed.

Patent document with publication number CN111745576a discloses a rotatable torque wrench of head, including wrench body, wrench head and set up in wrench head and be used for outputting the first strain gauge group and the second strain gauge group of strain signal, the wrench head with the wrench body is rotated and is connected, is equipped with on the wrench body and makes wrench head and wrench body keep relatively fixed locking mechanism, and the wrench head has the locking groove that lets the locking mechanism imbed and the locking groove sets up a plurality ofly.

In the technical scheme disclosed in the above patent document, although the wrench head can rotate, when the angle of the wrench head needs to be adjusted, the wrench head angle needs to be adjusted only by rotating the pulling piece by 180 degrees, and then the wrench head needs to be locked only by rotating the pulling piece by 180 degrees, so that the operation is more troublesome.

Disclosure of Invention

The utility model provides a wrench structure with a rotatable head, which aims to conveniently adjust the angle of a wrench head.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the wrench structure with the rotatable head comprises a wrench body and a wrench head, wherein the wrench head is rotationally connected with the wrench body, a first stop pawl and a second stop pawl for limiting the rotation angle of the wrench head are arranged on the wrench body, and ratchet teeth matched with the first stop pawl and the second stop pawl are arranged on the wrench head.

A first elastic element is arranged between the first stop pawl and the wrench body, and a second elastic element is arranged between the second stop pawl and the wrench body.

The first elastic element and the second elastic element are torsion springs or compression springs.

The first stop pawl and the second stop pawl are in rotary connection with the wrench body.

The first stopping pawl is provided with a first shifting handle.

The second stopping pawl is provided with a second shifting handle.

According to the wrench structure with the rotatable head, when the angle of the wrench head is required to be adjusted, the wrench head can be separated from a locking state by slightly pressing the first shifting handle or the second shifting handle, the angle of the wrench head is adjusted, and when the first shifting handle or the second shifting handle is stopped to be pressed, the stopping pawl automatically resets under the action of spring force, and the wrench head is in the locking state.

Drawings

The present specification includes the following drawings, the contents of which are respectively:

FIG. 1 is a longitudinal cross-sectional view of a head rotatable wrench structure of the present utility model;

FIG. 2 is a cross-sectional view of the head rotatable wrench structure of the present utility model;

FIG. 3 is a schematic view of the use of the head rotatable wrench structure of the present utility model;

FIG. 4 is a schematic view of the construction of the first stopping pawl;

FIG. 5 is a schematic view of the construction of the second stopping pawl;

FIG. 6 is a schematic view of the structure of the wrench body;

marked in the figure as: 1. a wrench body; 2. a spanner head; 3. a first stopping pawl; 4. a second stopping pawl; 5. a first shifter handle; 6. a second shifter handle; 7. a first elastic element; 8. a second elastic element; 9. a rotating shaft; 10. a fixed shaft; 11. a ratchet; 12. a stop surface; 13. and the shaft hole.

Detailed Description

The following detailed description of the embodiments of the utility model, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the utility model, and to aid in its practice, by those skilled in the art.

As shown in fig. 1 to 6, the present utility model provides a head rotatable wrench structure, comprising a wrench body 1 and a wrench head 2, wherein the wrench head 2 is used for screwing a fastener, the wrench head 2 is rotatably connected with the wrench body 1, the wrench head 2 is rotatably connected with an end of the wrench body 1 through a rotating shaft 9, an axis of the rotating shaft 9 is perpendicular to a length direction and a width direction of the wrench body 1, and a mounting hole for allowing the rotating shaft 9 to pass through is formed in a center of the end of the wrench head 2. The wrench body 1 is provided with a first stop pawl 3 and a second stop pawl 4 for limiting the rotation angle of the wrench head 2, and the wrench head 2 is provided with a ratchet 11 matched with the first stop pawl 3 and the second stop pawl 4.

Specifically, as shown in fig. 1 to 5, the first stopping pawl 3 and the second stopping pawl 4 are provided inside the wrench body 1, the first stopping pawl 3 and the second stopping pawl 4 are rotatably connected to the wrench body 1, the end portions of the first stopping pawl 3 and the second stopping pawl 4 are each provided with a shaft hole 13 through which the fixed shaft 10 passes, and the two fixed shafts 10 are fixedly provided on the wrench body 1. The rotation center lines of the first stop pawl 3 and the second stop pawl 4 are positioned in the same plane perpendicular to the length direction of the wrench body 1, the first stop pawl 3 and the second stop pawl 4 are symmetrically distributed on two sides of a symmetrical plane, the symmetrical plane is a plane perpendicular to the width direction of the wrench body 1, and the rotation center line of the wrench head 2 is positioned in the symmetrical plane.

After the first stop pawl 3 or the second stop pawl 4 is separated from the ratchet 11 on the wrench head 2, the wrench head 2 can rotate relative to the wrench body 1 after unlocking the wrench head 2, and the included angle between the wrench head 2 and the wrench body 1 is adjusted. After the first stop pawl 3 or the second stop pawl 4 is meshed with the ratchet 11 on the wrench head 2, the wrench head 2 is locked, the wrench head 2 and the wrench body 1 are kept relatively fixed, a rigid integrated structure is formed, and at the moment, a torque wrench can be used for screwing operation.

As shown in fig. 1 to 3, a first elastic element 7 is provided between the first stopping pawl 3 and the wrench body 1, and a second elastic element 8 is provided between the second stopping pawl 4 and the wrench body 1. The first elastic member 7 is for applying an elastic force for rotating the first stopping pawl 3 in a first direction for achieving a return of the first stopping pawl 3 so that the first stopping pawl 3 can be engaged with the ratchet teeth 11 on the wrench head 2. The second elastic member 8 is used for applying an elastic force for rotating the second stopping pawl 4 in the second direction for achieving the return of the second stopping pawl 4, so that the second stopping pawl 4 can be engaged with the ratchet teeth 11 on the wrench head 2. The first direction and the second direction are two rotation directions opposite to each other, and if the first direction is counterclockwise, the second direction is clockwise.

In the present embodiment, as shown in fig. 1 and 3, the first elastic member 7 and the second elastic member 8 are torsion springs or compression springs.

As shown in fig. 1 and 3, the first stopping pawl 3 is preferably provided with a first shifting lever 5, and the first shifting lever 5 is fixedly connected with the first stopping pawl 3. The second stopping pawl 4 is provided with a second shifting handle 6, and the second shifting handle 6 is fixedly connected with the second stopping pawl 4. The first shifting handle 5 and the second shifting handle 6 extend out of the wrench body 1 from two opposite sides of the wrench body 1 respectively, and the first shifting handle 5 and the second shifting handle 6 are used for contacting fingers of an operator, so that the operator can conveniently shift the first shifting handle to control the first stopping pawl 3 and the second stopping pawl 4 to rotate respectively.

During operation, under the action of the first elastic element 7 and the second elastic element 8, the first stop pawl 3 and the second stop pawl 4 are attached to the ratchet teeth 11 of the wrench head 2, and play a circumferential limiting role on the wrench head 2, so that the wrench can be used for tightening a fastener. When the angle between the wrench head 2 and the wrench body 1 needs to be adjusted along the second direction (clockwise in fig. 2), the first shifting handle 5 on the first stopping pawl 3 is shifted towards the outer side of the wrench body 1, so that the first stopping pawl 3 rotates along the second direction, the first stopping pawl 3 compresses the first elastic element 7, the stopping surface 12 at the end part of the first stopping pawl 3 is separated from the ratchet 11 of the wrench head 2, the wrench head 2 can rotate along the second direction, and the angle between the wrench head 2 and the wrench body 1 is adjusted; when the wrench head 2 is angularly adjusted to a proper position, the first stopping pawl 3 is released, and the first stopping pawl 3 is rotated in a first direction by the first elastic member 7 until the stopping surface 12 on the first stopping pawl 3 abuts against the ratchet teeth 11 of the wrench head 2, and the wrench head 2 is restrained from rotating and then available for driving a fastener.

When the angle between the wrench head 2 and the wrench body 1 needs to be adjusted along the first direction (anticlockwise direction in fig. 2), the second shifting handle 6 on the second stopping pawl 4 is shifted towards the outer side of the wrench body 1, so that the second stopping pawl 4 rotates along the first direction, the second stopping pawl 4 compresses the second elastic element 8, the stopping surface 12 at the end part of the second stopping pawl 4 is separated from the ratchet teeth 11 of the wrench head 2, the wrench head 2 can rotate along the first direction, and the angle between the wrench head 2 and the wrench body 1 is adjusted; when the wrench head 2 is angularly adjusted to a proper position, the second stopping pawl 4 is released, and the second stopping pawl 4 is rotated in the second direction by the second elastic member 8 until the stopping surface 12 on the second stopping pawl 4 abuts against the ratchet teeth 11 of the wrench head 2, and the wrench head 2 is restrained from rotating and then available for driving the fastener.

As shown in fig. 1 to 3, the wrench head 2 is provided with one hole for engaging various fasteners such as bolts, and the wrench head 2 has one hole. The wrench is rotated during use, so that the holes in the wrench head 2 all have a centroid axis. The wrench head 2 may have various forms, and may be an open wrench head 2, a quincuncial closed wrench head 2, a quincuncial open wrench head 2, an inner hexagonal wrench head 2, a socket wrench head 2, or a wrench head 2 having a ratchet mechanism, so that one wrench head 2 of any one shape may be combined with the wrench body 1, and a torque wrench of various shapes may be formed to be suitable for fasteners of different kinds and specifications.

The utility model is described above by way of example with reference to the accompanying drawings. It will be clear that the utility model is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present utility model; or the utility model is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the utility model.

Claims (5)

1. The utility model provides a rotatable spanner structure of head, includes spanner body and spanner head, and spanner head is rotatable coupling, its characterized in that with the spanner body: the wrench body is provided with a first stop pawl and a second stop pawl for limiting the rotation angle of the wrench head, and the wrench head is provided with a ratchet matched with the first stop pawl and the second stop pawl;

the first stopping pawl is provided with a first shifting handle.

2. The head rotatable wrench structure of claim 1, wherein: a first elastic element is arranged between the first stop pawl and the wrench body, and a second elastic element is arranged between the second stop pawl and the wrench body.

3. The head rotatable wrench structure of claim 2, wherein: the first elastic element and the second elastic element are torsion springs or compression springs.

4. A rotatable head wrench structure according to any one of claims 1 to 3, wherein: the first stop pawl and the second stop pawl are in rotary connection with the wrench body.

5. A rotatable head wrench structure according to any one of claims 1 to 3, wherein: the second stopping pawl is provided with a second shifting handle.