CN219094970U - Spanner wrench - Google Patents

Abstract

The application provides a wrench which is characterized by comprising a first main body part and a second main body part which are connected with each other, wherein an included angle is formed between the first main body part and the second main body part; a first wrench is arranged at one end of the first main body part far away from the second main body part, and the outer circumferential surface of the first wrench comprises a first edge which is suitable for an external workpiece; the first main body part is provided with a first central shaft, the first central shaft is coplanar with the first edge, and a plane where the first central shaft and the first edge are positioned is defined as a first datum plane; the second main body part is provided with a second central axis, the plane of which is parallel to the first central axis, and the plane of which is defined as a second datum plane; and the second reference plane is not parallel to the first reference plane. It can be seen that the spanner of this application can be more the rotational space of an offset angle when the dismouting work piece, can make things convenient for the dismouting work piece more.

Description

Spanner wrench

Technical Field

The application belongs to assembly and disassembly tools technical field, and more specifically relates to a spanner.

Background

A wrench is an apparatus for attaching and detaching a screw, and for example, an allen wrench can attach and detach an allen screw. The wrench of the L-shaped structure generally comprises a first main body part and a second main body part which are connected with each other, and the end parts of the first main body part and the second main body part are respectively provided with a wrench head. In the production process of the L-shaped structured wrench, in order to process the wrench head conveniently, edges are generally cut integrally on the first main body part and the second main body part as shown in fig. 1, so that the first wrench head arranged on the first main body part and the second wrench head arranged on the second main body part are mutually limited in relative position and relative angle, and in the use process, if obstacles exist around a screw, the L-shaped structured wrench of the type has small rotating space, and is inconvenient to assemble and disassemble the screw.

Disclosure of Invention

The present application provides a wrench to solve the above-mentioned technical problems.

The technical scheme that this application adopted is: the wrench is characterized by comprising a first main body part and a second main body part which are connected with each other, wherein an included angle is formed between the first main body part and the second main body part;

a first wrench is arranged at one end of the first main body part far away from the second main body part, and the outer circumferential surface of the first wrench comprises a first edge which is suitable for an external workpiece; and

the first main body part is provided with a first central shaft, a joint surface coplanarity is formed between the first central shaft and the first edge, and a plane where the first central shaft and the first edge are located is defined as a first reference surface;

the second main body part is provided with a second central axis, the plane of the second central axis of the second main body part is parallel to the direction of the first central axis of the first main body part, and the plane of the second central axis is defined as a projection forming projection plane second reference plane; and

the second reference plane of the projection surface is not parallel to the first reference plane of the combination surface.

It can be seen that, according to the wrench, the first reference plane formed between the first central shaft in the first main body portion and the first edge is not parallel to the second reference plane formed by projecting the second central shaft in the second main body portion along the first central shaft direction of the first main body portion, so that the second main body portion rotates around the central shaft of the first main body portion by an offset angle relative to the first main body portion, and the wrench head is enabled to be provided with a rotating space by the offset angle when the workpiece is assembled and disassembled, so that the workpiece can be assembled and disassembled more conveniently.

Further, when the outer peripheral surface of the first wrench head is provided with a plurality of first edges, each first edge and the first central shaft form the first datum plane respectively; and

the second reference plane is located between two adjacent first reference planes.

Further, when the cross section of the first wrench head is hexagonal, the offset angle of the second reference surface with respect to the first reference surface is between 0 ° and 60 °, but does not include 0 ° and 60 °.

Further, a second spanner is arranged at one end of the second main body part far away from the first main body part.

Further, the outer profile of the first wrench head is the same as the outer profile of the second wrench head.

Further, the first body portion is integrally formed with the first wrench head; and/or

The second main body part and the second spanner are integrally formed; and/or

The first body portion and the second body portion are integrally formed.

Further, the first edge extends in a first central axial direction of the first body portion, the first edge being formed on the first body portion; and/or

The outer periphery of the second spanner comprises a second edge which is suitable for an external workpiece, the second edge extends along the second central axis direction of the second main body part, and the second edge is formed on the second main body part.

Further, the wrench further comprises a bending part, and the bending part is respectively connected with the first main body part and the second main body part, so that an included angle is formed between the first main body part and the second main body part.

Further, the first wrench further includes:

a first trigger part having a preset thickness in an axial direction thereof; and

the second spanner part is connected between the first spanner part and the first main body part, and the outer contour dimension of the second spanner part gradually increases from one end close to the first spanner part to the other end close to the first main body part.

Further, the preset thickness of the first spanner opening part is 3 mm-10 mm.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a wrench according to the prior art;

fig. 2 is a schematic structural diagram of a wrench according to an embodiment of the present disclosure;

FIG. 3 is a schematic view illustrating an included angle formed between adjacent first reference surfaces in the wrench according to the embodiment of FIG. 2;

fig. 4 is a schematic diagram of a wrench according to the embodiment of fig. 2, in which the same workpiece is loosened simultaneously with a wrench according to the prior art.

Reference numerals:

100. a wrench; 110. a first body portion; 111. a first central axis; 120. a second body portion; 121. a second central axis; 122. a second reference surface; 130. a bending part; 140. a first wrench; 141. a first edge; 142. a first limiting surface; 143. a first reference surface; 144. an included angle; 145. a first pull-out section; 146. a second pull-out section; 150. a second spanner; 151. a second edge;

100', a wrench; 110', a first body portion; 120', a second body portion; 140', a first wrench; 150', a second wrench.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The application provides a spanner, this spanner can carry out dismouting to the screw. For example, when the wrench is used to disassemble and assemble a socket head cap screw, the cross section of the wrench head in the wrench may be of a hexagonal configuration. When the wrench is used, the wrench head of the wrench is inserted into the inner hexagonal groove of the inner hexagonal screw, and then the knob wrench enables the wrench head to drive the screw to rotate, so that the screw is detached.

Referring to fig. 2, the wrench 100 may include a first body portion 110 and a second body portion 120 connected to each other, and an included angle is formed between the first body portion 110 and the second body portion 120.

The first body 110 and the second body 120 may be integrally formed, or may be spliced together by welding or the like.

The length of the first body portion 110 may be different from the length of the second body portion 120, the length of the first body portion 110 may be longer than the second body portion 120, or the length of the second body portion 120 may be longer than the first body portion 110.

The angle between the first body portion 110 and the second body portion 120 may be any value between 30 ° and 120 °. For example, the angle between the first body portion 110 and the second body portion 120 may be 60 °, 90 °, 120 °, or the like.

In some embodiments, the wrench 100 further includes a bending portion 130, where the bending portion 130 is disposed at a connection between an end of the first body portion 110 and the second body portion 120, and the bending portion 130 forms the included angle between the first body portion 110 and the second body portion 120. The first body 110, the bending portion 130, and the second body 120 may be integrally formed, or may be joined by welding or the like.

Further, a first wrench 140 may be provided at an end of the first body portion 110 remote from the second body portion 120, the first wrench 140 being for contact with an external workpiece such as a screw. The first wrench 140 may be integrally formed with the first body 110, or may be spliced by welding or the like.

Specifically, when the external work piece is a socket head cap screw, the cross section of the first wrench 140 may be a hexagonal structure having a size matching the socket head cap screw. When the external work piece is other types of screws, the cross-section of the first wrench 140 may also be other structures compatible with the type of screws.

In the use process, the first wrench 140 is sleeved with an external workpiece, the second body 120 can be used as a force application part of the first body 110, and the first body 110 and the first wrench 140 connected with one end of the first body 110 are driven to rotate by applying a rotating external force to the second body 120, so that the external workpiece is driven to rotate.

Further, a first edge 141 adapted to an external workpiece is included on the outer circumferential surface of the first wrench 140.

Of course, a first limiting surface 142 may be correspondingly formed between adjacent first edges 141.

For example, when the external workpiece is a socket head cap screw, that is, the cross section of the first wrench 140 is in a hexagonal structure, six first edges 141 are formed on the outer circumferential surface of the first wrench 140, that is, six first limiting surfaces 142 are formed on the outer circumferential surface of the first wrench, and each first limiting surface 142 is respectively attached to the inner wall of the socket head cap screw.

Further, the first main body 110 may have a first central axis 111, where the first central axis is coplanar with the first edge, and defines a plane where the first central axis and the first edge lie as a first reference plane.

The second main body part is provided with a second central axis, the plane of which is parallel to the first central axis, and the plane of which is defined as a second reference plane.

Further, the second reference surface 122 is not parallel to the first reference surface 143.

Specifically, "the second reference surface 122 is not parallel to the first reference surface 143" means that the second reference surface 122 is not parallel to the first reference surface 143 in the three-dimensional space in which the wrench 100 is located. In addition, when the cross section of the first wrench 140 is in a hexagonal structure, the outer circumferential surface of the first wrench 140 has six first edges 141, each first edge 141 may form a first reference plane 143 with the first central axis 111, and each first reference plane 143 is not parallel to the second reference plane 122. That is, with respect to the prior art of fig. 1, the second body 120 of the present application is rotated by an angle with respect to the second body 120' of the prior art, that is, the second body 120 provided on the first body 10 is rotated by a certain angle with the first central axis 111 of the first body 110 as a rotation axis.

It can be understood that referring to fig. 1, in a conventional wrench 100', in order to enable both end portions of the wrench 100' to be disassembled and assembled with a workpiece, and to facilitate machining, a conventional machining method is to cut the workpiece directly from the outer circumferential surface of the first wrench head 140' to the outer circumferential surface of the second body 120' along the axial direction of the first body 110' and the axial direction of the second body 120' in sequence, so as to form a first edge at the first wrench head 140' and a second edge at the second body, where the first reference surface and the second reference surface are formed to be parallel to each other in three-dimensional space and coincide with each other.

However, the first edges and the second edges formed in the above manner are limited in relative positions and angles, that is, each of the first edges in the first body 110 'and the corresponding second edges in the second body 120' are defined in the same plane, that is, the position of the first edges determines the position of the second edges, and thus the position and direction of the second body 120 'relative to the first body 110', that is, the position and direction of the second body 120 'relative to the first body 110' are limited to the first body 110', so that the direction of the second body 120' is necessarily located on the first reference plane formed by one of the first edges and the first central axis. Further, since the outer work defines the position and angle of the first wrench 140' and thus the position and angle of the first body portion 110', when there is an obstacle around the outer work, the rotatable space of the second body portion 120' as the force application portion becomes small due to the fact that the position and angle of the second body portion 120' are limited by the first body portion 110', and it is inconvenient to disassemble the outer work.

In the embodiment of the present application, referring to fig. 2 to 4, the first reference surface 143 formed between the first central axis 111 and the first edge 141 is not parallel to the second reference surface 122 where the second central axis 121 is located, that is, the second reference surface 122 is offset by an angle with respect to the first reference surface 143, that is, the second body 120 is rotated by a certain angle with respect to the first body 110 during the processing of the wrench 100, so that when the second body 120 is used as a force application portion, more rotation space is available.

For ease of understanding, the prior art wrench 100' of fig. 4 is compared to the wrench 100 of the present embodiment to loosen the same screw.

It will be appreciated that when the screws are identical, the position and angle of insertion of the first wrench 140' in the prior art wrench 100' (fig. 4 (a)) into the screws are identical to the position and angle of insertion of the first wrench 140 in the wrench 100 (fig. 4 (b)) into the screws, i.e., the position and angle of the first body portion 110' in the prior art wrench 100' are identical to the first body portion 110 of the wrench 100 of the present application, and the rotational direction upon loosening is also identical (generally counterclockwise), at which point, in connection with fig. 3 and 4, it can be seen that the wrench 100 of the embodiment of the present application can be more conveniently loosened by one angle (i.e., the angle of rotation of the second body portion 120 relative to the first body portion 110) of the second body portion 120' in the embodiment of the present application. The direction of rotation of the tightening screw is opposite to the direction of rotation of the loosening screw and will not be described in detail here.

As can be seen, in the wrench 100 of the present application, the first reference surface 143 formed between the first central axis 111 and the first edge 141 in the first body portion 110 and the second central axis 121 in the second body portion 120 are projected along the direction of the first central axis 111 of the first body portion 110 to form the second reference surface 122, so that the second body portion 120 can rotate around the central axis of the first body portion 110 by an offset angle with respect to the first body portion 110, and the rotation angle increases the rotation space of the wrench head by one offset angle when the wrench is used for removing and installing workpieces, thereby facilitating the removal and installation of workpieces.

Referring to fig. 3 and 4, when the outer circumferential surface of the first wrench head has a plurality of first edges, each first edge is formed with a first reference surface with the first central axis, respectively, and the second reference surface is located between two adjacent first reference surfaces.

It will be appreciated that when the first wrench 140 has a plurality of first edges 141 on its outer circumferential surface, a plurality of first reference surfaces 143 are correspondingly formed, and the second reference surface 122 may be located between two adjacent first reference surfaces 143 so that the second reference surface 122 is not parallel to any one of the first reference surfaces 143.

Specifically, since the first central axis 111 engaged by each first edge 141 is the same, an included angle 144 may be formed between two adjacent first reference surfaces 143, and the second reference surface 122 is offset within the included angle 144.

For example, in some embodiments, referring to FIG. 3, when the cross-section of the first wrench 140 is hexagonal, two adjacent first reference surfaces 143 may form an included angle 144 of 60, and the second reference surface 122 may be offset from the first reference surface 143 by an angle of between 0 and 60, but not including 0 and 60. For example, the offset angle of the second reference surface 122 with respect to the first reference surface 143 may be 10 °, 30 °, 50 °, or the like.

That is, for example, when the offset angle of the second reference surface 122 with respect to the first reference surface 143 is 30 °, the second body portion 120 in the wrench 100 of the present application may have a rotation angle of 30 ° more with respect to the second body portion 120 in the wrench 100 of the related art.

Referring to fig. 2, in some embodiments, a second wrench 150 may be provided at an end of the second body portion 120 remote from the first body portion 110, the second wrench 150 also being adapted to contact an external workpiece, such as a screw. The second wrench 150 may be integrally formed with the second body 120, or may be spliced by welding or the like.

The outer profile of the second wrench 150 may be the same as or different from the outer profile of the first wrench 140. For example, when the outer profile of the second wrench 150 is the same as the outer profile of the first wrench 140, the first wrench 140 and the second wrench 150 may be detachable from the same type of external work; when the outer profile of the second wrench 150 is different from that of the first wrench 140, the first wrench 140 and the second wrench 150 may be assembled and disassembled with different types of external workpieces.

When in use, if the second wrench 150 is sleeved with an external workpiece, the first body 110 can be used as a force application portion of the second body 120, and the second body 120 and the second wrench 150 connected to one end of the second body 120 can be driven to rotate by applying a rotating external force to the first body 110, so as to drive the external workpiece to rotate.

Further, the length of the first body portion 110 may be different from the length of the second body portion 120.

Specifically, when the outer profile of the first wrench 140 is the same as the outer profile of the second wrench 150, and the lengths of the first body portion 110 and the second body portion 120 are different, it is also possible to select whether the first wrench 140 is sleeved with the external workpiece or the second wrench 150 is rotated to be sleeved with the external workpiece according to whether there is an obstacle around the external workpiece.

Specifically, taking the example that the length of the first body portion 110 is longer than that of the second body portion 120.

When an obstacle exists around the workpiece and the height of the obstacle is higher than the length of the second body portion 120, the first wrench 140 may be selected to contact with an external workpiece, such as an socket head cap screw, and the second body portion 120 is kept away from the obstacle by the length of the first body portion 110 so as to apply an external force to the second body portion 120, so that the second body portion 120 drives the first body portion 110 to rotate.

When there is no obstacle around the workpiece or the height of the obstacle is lower than the length of the second body portion 120, the first wrench 140 or the second wrench 150 may be selected to contact with an external workpiece, such as an socket head cap screw, and of course, the first body portion 110 may have a larger force application area when the second wrench 150 is selected to socket with the external workpiece.

Referring to fig. 2, in some embodiments, the first edge 141 extends along the first central axis 111 of the first body 110, and the first edge 141 is also formed on the first body 110; and/or, the outer periphery of the second wrench 150 includes a second edge 151 adapted to the external work, the second edge 151 may extend along the second central axis 121 of the second body portion 120, and the second edge 151 is also formed on the second body portion 120.

Specifically, after the first edge 141 is formed on the first body 110, when the first body 110 is used as a force application portion, the friction force between the first body 110 and the user can be increased, and the first edge 141 extends for the first wrench 140, so that the whole wrench 100 can be more integrated.

After the second edge 151 is formed on the second body 120, when the second body 120 is used as a force application portion, the friction force between the second body 120 and the user can be increased, and the second edge 151 can be formed by extending the second wrench 150, so that the whole wrench 100 can be more integrated.

Referring to fig. 2, in some embodiments, the first wrench 140 may further include a first wrench portion 145 and a second wrench portion 146, the second wrench portion 146 being disposed between the first wrench portion 145 and the first body portion 110, the second wrench portion 146 forming the first wrench 140 with a reducing structure, the first wrench portion 145 and the second wrench portion 146 being configured to contact the same external workpiece, such as a screw.

For example, when the wrench 100 is used for assembling and disassembling a socket head cap screw, the first wrench opening 145 and the second wrench opening 146 are both used for contacting with the socket head cap screw socket groove, and at this time, the cross sections of the first wrench opening 145 and the second wrench opening 146 are respectively in a hexagonal structure.

Specifically, the first jaw 145 may further have a predetermined thickness in an axial direction thereof (i.e., in the direction of the first central axis 111), and the predetermined thickness value may be determined according to a size of a screw to be mounted and dismounted. For example, the thickness of the first jaw 145 may be 3mm to 10mm, specifically 3mm, 5mm, 8mm, 10mm, or the like.

The second jaw portion 146 serves to connect the first jaw portion 145 and the first body portion 110 in an axial direction of the first jaw portion 145. That is, the second jaw portion 146 is located at an end of the first jaw portion 145 near the first body portion 110. When the wrench 100 is used for assembling and disassembling the socket head cap screw, the first wrench opening 145 contacts with the region of the socket head cap screw, which is close to the bottom, of the socket head cap groove, and the second wrench opening 146 contacts with the region of the socket head cap screw, which is close to the opening, of the socket head cap groove.

In some embodiments, the outer dimension of the second jaw portion 146 may be progressively larger from one end near the first jaw portion 145 to the other end near the first body portion 110. That is, the axial cross-section of the second trigger portion 146 may be of an inverted trapezoidal configuration. The second wrench opening 146 forms a reducing structure at an end of the first wrench 140 near the first body portion 110.

It will be appreciated that the position of the opening in the groove of the screw near the opening is worn away from the wrench 100, so that the position of the opening in the groove is worn away more and more after the screw is assembled and disassembled more times, and thus in the above embodiment, by making the first jaw 145 in the first wrench 140 contact with the position of the bottom in the groove near the bottom, the second jaw 146 in the first wrench 140 contacts with the position of the opening in the groove, it can be ensured that the first wrench 140 contacts with the groove with the enlarged opening sufficiently, so as to facilitate the assembly and disassembly of the screw better.

It can be seen that, in the wrench 100, the first wrench 140 is divided into the first wrench opening 145 and the second wrench opening 146 along the axial direction, and the outer dimension of the second wrench opening 146 is gradually increased from one end close to the first wrench opening 145 to the other end close to the first body portion 110, so that the first wrench 140 can still be fully contacted with the grooves in the screw after multiple disassembly, and the screw can be disassembled better.

Referring to fig. 2, in some embodiments, the second jaw 146 is integrally formed with the first jaw 145, which can ensure the connection strength between the first jaw 145 and the second jaw 146, and facilitate processing.

Specifically, the second jaw 146 and the first jaw 145 may be integrally formed by cutting or by casting.

Further, in some embodiments, the first body portion 110 may be integrally formed with the second jaw portion 146, which can ensure the connection strength between the second jaw portion 146 and the first body portion 110, and facilitate processing. The outer dimension of the first body portion 110 may be the same as the outer dimension of the end portion of the second jaw portion 146 near the first body portion 110, and of course, the outer dimension of the first body portion 110 may also be smaller or larger than the outer dimension of the end portion of the second jaw portion 146220 near the first body portion 110.

Specifically, the second jaw 146 and the first body 110 may be integrally formed by cutting, and the second jaw 146 and the first jaw 145 may be integrally formed by casting.

Further, the outer contour and size of the first wrench part 145 in the first wrench 140 may be the same as or different from the outer contour and size of the second wrench 150.

For example, when the outer contour and the size of the second wrench 150 are the same as those of the first wrench part 145 of the first wrench 140, the second wrench 150 can be used to mount and dismount screws with the same type and size as those of the first wrench 140, and at this time, the second wrench 150 can be used to mount and dismount screws with the opening in the groove not being enlarged.

That is, when the screw to be disassembled of the wrench 100 is newer (i.e., the opening position of the groove in the screw is not enlarged), the screw can be disassembled by the second wrench 150; when the screw to be disassembled of the wrench 100 is worn seriously, and the opening position of the groove in the screw becomes large, the screw can be disassembled by using the first wrench 140 formed by the first wrench part 145 and the second wrench part 146. The above-described manner enables one wrench 100 to be able to simultaneously disassemble and assemble a new screw or an old screw.

When the outer contour and the size of the second wrench 150 are different from those of the first wrench part 145, the second wrench 150 can be assembled with the first wrench 140 to disassemble screws with different sizes, so that the compatibility of the wrench 100 is improved.

The foregoing description of the preferred embodiment of the present utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. The wrench is characterized by comprising a first main body part and a second main body part which are connected with each other, wherein an included angle is formed between the first main body part and the second main body part;

a first wrench is arranged at one end of the first main body part far away from the second main body part, and the outer circumferential surface of the first wrench comprises a first edge which is suitable for an external workpiece;

the first main body part is provided with a first central shaft, the first central shaft is coplanar with the first edge, and a plane where the first central shaft and the first edge are positioned is defined as a first datum plane;

the second main body part is provided with a second central axis, the plane of which is parallel to the first central axis, and the plane of which is defined as a second datum plane; and

the second reference plane is non-parallel to the first reference plane.

2. The wrench of claim 1, wherein when the outer circumferential surface of the first wrench head has a plurality of first edges, each of the first edges forms the first reference surface with the first center shaft, respectively; and

the second reference plane is located between two adjacent first reference planes.

3. The wrench of claim 2, wherein the second datum surface is offset from the first datum surface by an angle of 0 ° to 60 ° when the cross section of the first wrench head is hexagonal

But not 0 ° and 60 °.

4. A wrench as claimed in any one of claims 1 to 3, wherein an end of the second body portion remote from the first body portion is provided with a second wrench.

5. The wrench of claim 4, wherein the outer profile of the first wrench head is the same as the outer profile of the second wrench head.

6. The wrench of claim 4, wherein the first body portion is integrally formed with the first wrench head;

the second main body part and the second spanner are integrally formed;

the first body portion and the second body portion are integrally formed.

7. The wrench of claim 4, wherein the first edge extends in a first center axial direction of the first body portion, the first edge being formed on the first body portion; and/or

The outer periphery of the second spanner comprises a second edge which is suitable for an external workpiece, the second edge extends along the second central axis direction of the second main body part, and the second edge is formed on the second main body part.

8. A wrench as claimed in any one of claims 1 to 3, further comprising a bending portion connected to the first and second body portions respectively such that an included angle is formed between the first and second body portions.

9. A wrench as claimed in any one of claims 1 to 3, wherein the first wrench further comprises:

a first trigger part having a preset thickness in an axial direction thereof; and

the second spanner part is connected between the first spanner part and the first main body part, and the outer contour dimension of the second spanner part gradually increases from one end close to the first spanner part to the other end close to the first main body part.

10. The wrench of claim 9, wherein the first wrench opening portion has a predetermined thickness of 3mm to 10mm.

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