CN220863852U

CN220863852U - Spanner

Info

Publication number: CN220863852U
Application number: CN202322508376.0U
Authority: CN
Inventors: 章煜; 郑琦春; 张振动; 于桂洋; 李清
Original assignee: iFlytek Co Ltd
Current assignee: iFlytek Co Ltd
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-04-30
Anticipated expiration: 2033-09-14

Abstract

The utility model relates to the technical field of operation tools, and provides a wrench, which comprises: a wrench body and a working head; the working head comprises a connecting rod, an adjusting component and a plurality of wrench teeth; the wrench body is connected with the first end of the connecting rod, and the adjusting component is arranged on the connecting rod and is connected with a plurality of wrench teeth; the plurality of wrench teeth are arranged around the connecting rod, and the end parts of the plurality of wrench teeth are exposed out of the second end of the connecting rod so as to form a clamping opening for clamping a workpiece; wherein, adjusting part is used for controlling a plurality of spanner teeth to be close to or keep away from the connecting rod in step to realize adjusting the bore of centre gripping mouth. According to the wrench provided by the utility model, the caliber of the clamping opening can be adjusted by using the adjusting component, so that the clamping opening can be matched with and clamped with workpieces of different sizes, and the workpieces can be assembled or disassembled by twisting, so that the effect that the wrench can twist the workpieces of different types and sizes is achieved.

Description

Spanner

Technical Field

The utility model relates to the technical field of operating tools, in particular to a wrench.

Background

In our daily life, a wrench is an indispensable tool for processing, assembling or maintaining a product, however, too severe suitability of an ordinary wrench may cause some inconvenience in use.

In the existing spanner types, the T-shaped spanner is of a fixed size and cannot be matched with bolts of different types. However, in the actual construction process, a plurality of bolts with different sizes are often required to be screwed, so that operators must carry a plurality of groups of wrenches with different sizes to work, and burden is brought to the constructors in an intangible way.

Disclosure of utility model

The utility model provides a wrench which is used for solving the problem that the wrench in the prior art cannot be matched with workpieces of different types.

The utility model provides a wrench, comprising: a wrench body and a working head;

the working head comprises a connecting rod, an adjusting component and a plurality of spanner teeth;

The wrench body is connected with the first end of the connecting rod, and the adjusting component is arranged on the connecting rod and is connected with a plurality of wrench teeth; the plurality of wrench teeth are arranged around the connecting rod, and the end parts of the plurality of wrench teeth are exposed out of the second end of the connecting rod so as to form a clamping opening for clamping a workpiece;

The adjusting assembly is used for controlling the plurality of spanner teeth to synchronously approach or depart from the connecting rod so as to realize the adjustment of the caliber of the clamping opening.

According to the wrench provided by the utility model, the adjusting assembly comprises a driving piece and a plurality of traction ropes;

the first ends of the plurality of traction ropes are respectively connected with the driving piece, and the second ends of the plurality of traction ropes are respectively connected with the plurality of wrench teeth in a one-to-one correspondence manner; the connecting rod is provided with a guide structure which is matched with the plurality of traction ropes;

The driving piece is used for applying traction force to a plurality of traction ropes, and the traction ropes are used for driving a plurality of wrench teeth to move along the radial direction of the connecting rod under the guidance of the guide structure.

According to the wrench provided by the utility model, the driving piece comprises a connecting sleeve and a locking nut; the connecting rod comprises a first rod body section and a second rod body section;

One end of the first rod body section is connected with the wrench body, and the other end of the first rod body section is connected with the second rod body section; the peripheral wall of the first rod body section is provided with a thread structure, and a plurality of wrench teeth are arranged around the second rod body section; the guide structure is sequentially arranged along the first rod body section and the second rod body section in an extending mode;

The connecting sleeves are sleeved on the peripheral wall of the first rod body section, and the first ends of the plurality of traction ropes are respectively connected with the connecting sleeves;

The locking nut is in threaded connection with the first rod body section, and the locking nut is used for driving the connecting sleeve to move along the axial direction of the first rod body section.

According to the wrench provided by the utility model, the peripheral wall of the second rod body section is provided with a plurality of guide grooves;

The guide grooves are distributed along the circumferential direction of the second rod body section, and each guide groove extends along the axial direction of the second rod body section;

The wrench teeth are arranged in the guide grooves in a one-to-one correspondence manner, and the guide grooves are used for guiding the wrench teeth to move along the radial direction of the second rod body section.

According to the utility model, the wrench teeth comprise a guide section and a clamping head;

The clamping head is arranged at one end of the guide section, which is away from the wrench body, and one end of the clamping head, which is close to the wrench body, is abutted with the end part of the guide groove;

the guide section is movably arranged in the guide groove along the radial direction of the second rod body section, and the second end of the traction rope is connected with the guide section so as to traction the guide section along the radial direction under the guidance of the guide structure.

According to the wrench provided by the utility model, the connecting rod further comprises a limiting section; the limiting section is arranged between the first rod body section and the second rod body section;

One end of the limiting section, which is away from the first rod body section, is abutted against one end of the wrench tooth, which is close to the wrench body.

According to the wrench provided by the utility model, the guiding structure comprises a wiring groove, a rope threading channel and a rope threading hole;

The plurality of wiring grooves are arranged on the peripheral wall of the first rod body section, are distributed along the circumferential direction of the first rod body section, and extend along the axial direction of the first rod body section;

The rope threading channels are arranged in the second rod body section, a plurality of rope threading holes are formed, the rope threading holes are distributed along the circumferential direction of the second rod body section and are arranged in one-to-one opposite to the wrench teeth, and each rope threading hole extends along the radial direction of the second rod body section;

The first end of the rope threading channel is respectively communicated with one ends of the plurality of wiring grooves far away from the wrench body, and the second end of the rope threading channel is respectively communicated with the plurality of rope threading holes.

According to the wrench provided by the utility model, the wrench body comprises a T-shaped handle and an extension bar;

The body of rod portion of "T" handle with the first end of extension bar is connected, the second end of extension bar with the first end of connecting rod can dismantle the connection.

According to the wrench provided by the utility model, the second end of the extension rod is provided with the first groove, the first end of the connecting rod is provided with the first protrusion, and the first groove is used for being matched with the first protrusion and the end head on the workpiece;

Or the second end of the extension bar is provided with a second bulge, the first end of the connecting rod is provided with a second groove, and the second bulge is used for being matched with the second groove and a sinking groove on the workpiece.

According to the wrench provided by the utility model, six wrench teeth are arranged, and the six wrench teeth are uniformly distributed along the circumference of the connecting rod.

According to the wrench provided by the utility model, the connecting rod, the adjusting component and the plurality of wrench teeth are arranged on the working head, so that the workpiece can be clamped by the clamping opening formed by the plurality of wrench teeth, and the adjusting component can be used for controlling the plurality of wrench teeth to synchronously approach or separate from the connecting rod so as to adjust the caliber of the clamping opening, so that the clamping opening can be adapted to and clamp workpieces with different sizes, the workpieces can be assembled or disassembled by twisting, and the effect that the wrench can twist workpieces with different types and sizes can be achieved.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a wrench according to the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1 provided by the present utility model;

FIG. 3 is an exploded view of the wrench provided by the present utility model;

FIG. 4 is a schematic view of a part of a wrench according to the present utility model;

Fig. 5 is a schematic structural view of a wrench tooth provided by the utility model.

Reference numerals:

1. A wrench body; 11. a "T" shaped handle; 12. an extension bar;

2. A working head;

21. A connecting rod; 211. a first rod segment; 212. a second rod segment; 213. a guide structure; 214. a limiting section; 2131. wiring grooves; 2132. a rope threading channel; 2133. threading the rope hole; 2121. a guide groove;

22. an adjustment assembly; 221. a driving member; 222. a traction rope; 2211. connecting sleeves; 2212. a lock nut;

23. Wrench teeth; 231. a guide section; 232. a clamping head; 233. and a through hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The wrench provided by the embodiment of the utility model is described in detail below with reference to fig. 1 to 5 by means of a specific embodiment and an application scenario thereof.

In some embodiments, as shown in fig. 1, the present embodiment provides a wrench, a wrench body 1 and a working head 2.

The working head 2 comprises a connecting rod 21, an adjustment assembly 22 and a plurality of wrench teeth 23.

The wrench body 1 is connected with the first end of the connecting rod 21, and the adjusting component 22 is arranged on the connecting rod 21 and is connected with the plurality of wrench teeth 23; a plurality of wrench teeth 23 are provided around the connecting rod 21, and ends of the plurality of wrench teeth 23 are exposed at the second end of the connecting rod 21 to form a clamping opening for clamping a workpiece.

Wherein, the adjusting component 22 is used for controlling the plurality of wrench teeth 23 to synchronously approach to or separate from the connecting rod 21 so as to realize the adjustment of the caliber of the clamping opening.

It will be appreciated that the connecting rod 21 is used to connect the wrench body 1 and that the connecting rod 21 also provides mounting support for the adjustment assembly 22 and the plurality of wrench teeth 23.

The adjusting component 22 can be provided with a push rod and a plurality of push blocks, the push rod is connected with the plurality of push blocks, the plurality of push blocks are arranged at the bottoms of the plurality of wrench teeth 23, and the push rod is pressed, so that the plurality of push blocks synchronously approach or depart from the connecting rod 21 to drive the plurality of wrench teeth 23 to synchronously approach or depart from the connecting rod 21, and the caliber of a clamping opening is adjusted; or the adjusting component 22 can be also provided with a pushing piece and a plurality of driving ropes, the driving ropes are respectively connected with the pushing piece and the plurality of wrench teeth 23, the pushing piece is used for pushing the pushing piece, the pushing piece pulls the driving ropes, and the driving ropes drive the wrench teeth 23 to synchronously approach or separate from the connecting rod 21 so as to realize the adjustment of the caliber of the clamping opening.

When the product is machined or installed, a spanner is required to be used for operating a workpiece, and the workpiece can be a bolt. When the wrench is used, the plurality of wrench teeth 23 are sleeved on the screw head of the bolt, then the adjusting component 22 is adjusted to control the plurality of wrench teeth 23 to synchronously approach the connecting rod 21, so that the clamping mouth is ensured to clamp the screw head, then the wrench body 1 is rotated to screw or unscrew the bolt, and finally the adjusting component 22 is adjusted to control the plurality of wrench teeth 23 to synchronously depart from the connecting rod 21, so that the caliber of the clamping mouth is larger than the maximum outer diameter of the screw head, and the wrench and the bolt are separated.

According to the wrench provided by the utility model, the connecting rod 21, the adjusting component 22 and the plurality of wrench teeth 23 are arranged on the working head 2, so that a workpiece can be clamped by the clamping opening formed by the plurality of wrench teeth 23, and the adjusting component 22 can be used for controlling the plurality of wrench teeth 23 to synchronously approach or separate from the connecting rod 21 so as to adjust the caliber of the clamping opening, so that the clamping opening can be matched with and clamp workpieces with different sizes, the workpieces can be assembled or disassembled by twisting, and the effect that the wrench can twist workpieces with different types and different sizes can be achieved.

In some embodiments, as shown in fig. 1, 2 and 3, the adjustment assembly 22 of the present embodiment includes a drive member 221 and a plurality of traction ropes 222.

The first ends of the plurality of traction ropes 222 are respectively connected with the driving piece 221, and the second ends of the plurality of traction ropes 222 are respectively connected with the plurality of spanner teeth 23 in a one-to-one correspondence manner; the connecting rod 21 is provided with a guiding structure 213 adapted to a plurality of traction ropes 222.

The driving member 221 is used for applying traction force to the plurality of traction ropes 222, and the plurality of traction ropes 222 are used for driving the plurality of wrench teeth 23 to move along the radial direction of the connecting rod 21 under the guidance of the guide structure 213.

It is to be appreciated that the driving member 221 may be a telescopic rod, and the traction force is applied to the plurality of traction ropes 222 by the telescopic rod, so that the plurality of traction ropes 222 drive the plurality of wrench teeth 23 to move along the radial direction of the connecting rod 21, so that the clamping opening can be adjusted to the caliber adapted to the workpiece, and the workpiece can be operated conveniently, or the driving member 221 may also be a sleeve member rotatably arranged on the connecting rod 21, and the plurality of traction ropes 222 are pulled by the movement of the sleeve member on the connecting rod 21, so as to drive the plurality of wrench teeth 23 to move along the radial direction of the connecting rod 21, so that the clamping opening can be adjusted to the caliber adapted to the workpiece, and the workpiece can be operated conveniently.

Further, the hauling rope 222 may be a steel wire rope, and the guiding structure 213 provides a receiving space for the plurality of hauling ropes 222 and guides and limits the hauling of the plurality of hauling ropes 222.

In this embodiment, by providing the adjusting component 22 with the driving member 221 and the plurality of traction ropes 222, under the action of the traction force of the driving member 221, the plurality of traction ropes 222 can drive the plurality of wrench teeth 23 to move along the radial direction of the connecting rod 21 under the guidance of the guiding structure 213, so that the whole structure is simple and convenient to operate, the traction stability of the plurality of traction ropes 222 is ensured, and the accuracy of the plurality of wrench teeth 23 moving along the radial direction of the connecting rod 21 is ensured.

In some embodiments, as shown in fig. 1 and 3, the driving member 221 of the present embodiment includes a connection sleeve 2211 and a lock nut 2212; the connecting rod 21 comprises a first rod section 211 and a second rod section 212.

One end of the first rod body section 211 is connected with the wrench body 1, and the other end is connected with the second rod body section 212; the peripheral wall of the first rod body section 211 is provided with a thread structure, and a plurality of wrench teeth 23 are arranged around the second rod body section 212; the guide structure 213 extends along the first rod segment 211 and the second rod segment 212 in sequence.

The connecting sleeve 2211 is sleeved on the peripheral wall of the first rod body section 211, and first ends of the plurality of traction ropes 222 are respectively connected with the connecting sleeve 2211.

A lock nut 2212 is screwed with the first rod segment 211, and the lock nut 2212 is used for driving the connecting sleeve 2211 to move along the axial direction of the first rod segment 211.

It will be appreciated that the guiding structure 213 is used to guide the traction rope 222 to bear traction forces in the extension direction of the first rod segment 211 and the second rod segment 212.

When the workpiece needs to be clamped, the lock nut 2212 is rotated, based on the threaded connection of the lock nut 2212 and the first rod body section 211, the lock nut 2212 moves along the direction of the first rod body section 211 towards the wrench body 1 in a spiral manner, meanwhile, the lock nut 2212 pushes the connecting sleeve 2211 to move towards the wrench body 1, meanwhile, the connecting sleeve 2211 pulls the plurality of traction ropes 222 towards the wrench body 1, the plurality of traction ropes 222 pull the plurality of wrench teeth 23 to move along the radial direction of the second rod body section 212, so that the clamping opening can be adjusted to the caliber matched with the workpiece, the workpiece can be screwed or unscrewed, after the operation is finished, the lock nut 2212 is rotated in the opposite direction, the lock nut 2212 moves along the direction of the first rod body section 211 towards the direction away from the wrench body 1, the locking force of the connecting sleeve 2211 by the lock nut 2212 is removed, the traction force exerted by the connecting sleeve 2211 on the plurality of traction ropes 222 is also removed, and the clamping force formed by the plurality of wrench teeth 23 on the workpiece is removed.

In this embodiment, the connecting sleeve 2211 and the locking nut 2212 are disposed on the driving member 221, based on the threaded fit between the locking nut 2212 and the first rod body section 211, the locking nut 2212 applies a locking force to the connecting sleeve 2211, so that the plurality of traction ropes 222 disposed on the connecting sleeve 2211 bear traction force, and the plurality of traction ropes 222 pull the plurality of wrench teeth 23 to move along the radial direction of the second rod body section 212 under the guidance of the guiding structure 213, so that the plurality of wrench teeth 23 are synchronously close to or far away from the second rod body section 212, so as to adjust the caliber of the clamping opening, the locking force of the locking nut 2212 to the connecting sleeve 2211 is stable and reliable, and the plurality of traction ropes 222 bear stable traction force, so that the clamping force of the plurality of wrench teeth 23 is stable and reliable.

In some embodiments, as shown in fig. 3 and 4, the peripheral wall of the second rod segment 212 of the present embodiment is provided with a plurality of guide grooves 2121.

The plurality of guide grooves 2121 are arranged along the circumferential direction of the second rod section 212, and each guide groove 2121 is disposed along the axial extension of the second rod section 212.

The plurality of wrench teeth 23 are disposed in a one-to-one correspondence with the plurality of guide grooves 2121, and the guide grooves 2121 are used for guiding the wrench teeth 23 to move along the radial direction of the second rod segment 212.

It is understood that the wrench teeth 23 may be disposed on the inner side of the guide groove 2121, the wrench teeth 23 may move along the radial direction of the second rod section 212 under the clamping action of the two sides of the guide groove 2121, and the wrench teeth 23 may also be disposed on the two sides of the guide groove 2121 in a penetrating manner, and the wrench teeth 23 move along the radial direction of the second rod section 212 under the guiding action of the two sides of the guide groove 2121.

In this embodiment, the plurality of guide grooves 2121 are formed in the peripheral wall of the second rod body section 212, each guide groove 2121 extends along the axial direction of the second rod body section 212, the wrench teeth 23 are disposed in the guide grooves 2121, the guide grooves 2121 limit the wrench teeth 23 to move along the circumferential direction of the second rod body section 212, so that the wrench teeth 23 can move along the radial direction of the second rod body section 212 under the guiding action of the guide grooves 2121, the stability of the wrench teeth 23 moving along the radial direction of the second rod body section 212 is ensured, the sufficient clamping force of the clamping openings formed by the plurality of wrench teeth 23 is ensured, and the phenomenon that the wrench teeth 23 loose or the insufficient clamping force occurs when operating the workpiece is prevented.

In some embodiments, as shown in fig. 3 and 4, the wrench teeth 23 are bar-shaped, a bar-shaped hole is provided along the length direction of the wrench teeth 23, the guide groove 2121 has a groove edge, the groove edge is axially extended along the second rod section 212, the groove edge is inserted into the bar-shaped hole on the wrench teeth 23, and the wrench teeth 23 can stably move along the radial direction of the second rod section 212 based on the movement of the bar-shaped hole on the wrench teeth 23 relative to the groove edge.

Specifically, two bar-shaped holes may be disposed along the length direction of the wrench tooth 23, the two bar-shaped holes are disposed opposite to each other, the guide groove 2121 has two groove edges, the two groove edges are disposed on the wrench tooth 23 in one-to-one correspondence with the two bar-shaped holes, and the two bar-shaped holes are moved relative to the two groove edges, so that the wrench tooth 23 can stably move along the radial direction of the second rod body segment 212.

In some embodiments, as shown in fig. 1, 4 and 5, the wrench tooth 23 of the present embodiment includes a guide section 231 and a gripping head 232.

The clamping head 232 is arranged at one end of the guide section 231, which is away from the wrench body 1, and one end of the clamping head 232, which is close to the wrench body 1, is abutted with the end of the guide groove 2121.

The guide section 231 is movably provided in the radial direction of the second rod body section 212 in the guide groove 2121, and the second end of the traction rope 222 is connected to the guide section 231 to pull the guide section 231 in the radial direction under the guidance of the guide structure 213.

It can be appreciated that the clamping head 232 of the present embodiment abuts against the end of the guide groove 2121 near the end of the wrench body 1, so that the clamping head 232 can only move along the radial direction of the second rod segment 212 when the guide segment 231 moves in the guide groove 2121, so that the clamping head 232 always extends out of the end of the guide groove 2121 of the second rod segment 212 to form a clamping opening for clamping a workpiece, the traction rope 222 pulls the guide segment 231 to move along the radial direction of the second rod segment 212, so that the clamping head 232 also moves along the radial direction of the second rod segment 212, and the clamping head 232 moves synchronously near or far away from the second rod segment 212 to adjust the caliber of the clamping opening, thereby ensuring the stability of the radial movement of the wrench teeth 23 along the second rod segment 212.

In some embodiments, as shown in fig. 3, the connecting rod 21 of the present embodiment further includes a spacing section 214; the limiting section 214 is disposed between the first rod section 211 and the second rod section 212.

One end of the limiting section 214, which is away from the first rod body section 211, is abutted against one end of the wrench tooth 23, which is close to the wrench body 1.

This embodiment sets up spacing section 214 between first body of rod section 211 and second body of rod section 212, spanner tooth 23 can be the circumference at the one end of butt in spacing section 214 and when the radial removal of a plurality of spanner teeth 23 along second body of rod section 212, spacing section 214 deviates from the one end of first body of rod section 211 and can stop to a plurality of spanner teeth 23, in order to prevent the axial removal of spanner teeth 23 along second body of rod section 212, the reliability of the radial removal of a plurality of spanner teeth 23 along second body of rod section 212 has been ensured, make a plurality of spanner teeth 23 can be close to or keep away from second body of rod section 212 in step, in order to clamp the work piece and then screw up or unscrew the work piece.

Meanwhile, when the lock nut 2212 is rotated, the limiting section 214 can also prevent the lock nut 2212 from falling off from the first rod section 211 because the diameter of the limiting section 214 is larger than the diameter of the second rod section 212 and the diameter of the first rod section 211 when the lock nut 2212 approaches the wrench teeth 23.

In some embodiments, as shown in fig. 2 and 3, the guide structure 213 of the present embodiment includes a wiring groove 2131, a rope passage 2132, and a rope hole 2133.

The wiring grooves 2131 are provided with a plurality of wiring grooves 2131, and the plurality of wiring grooves 2131 are provided on the peripheral wall of the first rod body section 211 and are arranged along the circumferential direction of the first rod body section 211, and each wiring groove 2131 is provided along the axial extension of the first rod body section 211.

The rope penetrating channel 2132 is disposed in the second rod segment 212, the rope penetrating holes 2133 are plural, the plural rope penetrating holes 2133 are distributed along the circumference of the second rod segment 212 and are disposed opposite to the plural wrench teeth 23 one by one, and each rope penetrating hole 2133 extends along the radial direction of the second rod segment 212.

The first ends of the rope threading channels 2132 are respectively communicated with one ends of the plurality of wiring grooves 2131 far away from the wrench body 1, and the second ends of the rope threading channels 2132 are respectively communicated with the plurality of rope threading holes 2133.

It will be appreciated that the pulling rope 222 arranged in the first rod body segment 211 is arranged in the wire groove 2131, the wire groove 2131 is used for guiding the pulling rope 222 to bear traction force along the wire groove 2131, the pulling rope 222 arranged in the second rod body segment 212 is arranged in the rope threading channel 2132, the pulling rope 222 is threaded out of the rope threading hole 2133, correspondingly, the wrench tooth 23 is provided with the through hole 233, and the pulling rope 222 is threaded out of the rope threading hole 2133 and is fixed in the through hole 233 of the wrench tooth 23.

The rope threading hole 2133 of this implementation extends along the radial direction of the second rod body segment 212, so that when the traction rope 222 passes out of the rope threading hole 2133 from the second rod body segment 212, the traction direction of the traction rope 222 is consistent with the traction direction of the wrench tooth 23, and the traction rope is all along the radial direction of the second rod body segment 212, so that the rope threading hole 2133 can guide the traction rope 222 to pull the wrench tooth 23 along the radial direction of the second rod body segment 212, and when the wrench tooth 23 moves along the radial direction of the second rod body segment 212 in the guide groove 2121, the wrench tooth 23 cannot be blocked or pulled in the guide groove 2121, and the stability of the movement of the wrench tooth 23 is ensured.

In some embodiments, as shown in fig. 1, the wrench body 1 of the present embodiment includes a "T" shaped handle 11 and an extension bar 12.

The body of the "T" handle 11 is connected to a first end of the extension bar 12, and a second end of the extension bar 12 is detachably connected to a first end of the connecting rod 21.

It will be appreciated that the "T" handle 11 may increase torque, making it more labor-efficient to turn the wrench.

The extension bar 12 of this embodiment can increase the distance of the work plane of "T" type handle 11 and work piece, and when the difficult rotation of spanner in the narrow and small operation space of components and parts, the use of extension bar 12 can be favorable to avoiding the interference with other components and parts, reaches the effect of the spanner operation of being convenient for.

In some examples, the distance of the wrench from the "T" handle 11 to the work plane of the workpiece is 245mm by using extension bar 12, so that the wrench can avoid components with a height of less than 245mm around the workpiece when rotated.

In some embodiments, as shown in fig. 1, the second end of the extension rod 12 of this embodiment is provided with a first groove, and the first end of the connecting rod 21 is provided with a first protrusion, and the first groove is used for matching with the first protrusion and the end on the workpiece.

It can be understood that when the end head on the workpiece is matched with the first groove in size, the working head 2 is not required to be installed, and the wrench body 1 is directly used for operating the workpiece; when the size of the end head on the workpiece is inconsistent with that of the first groove, the working head 2 is arranged on the wrench body 1, and the caliber of the clamping opening of the plurality of wrench teeth 23 is adjusted through the adjusting device so as to be matched with the end head of the workpiece and operate.

The wrench of this embodiment can only use wrench body 1 to operate the work piece, also can install work head 2 additional and operate the work piece, adopts different spanner configuration modes to different work pieces, has realized the flexibility and the universality that the spanner used.

In some embodiments, as shown in fig. 1, the second end of the extension rod 12 of this embodiment is provided with a second protrusion, and the first end of the connecting rod 21 is provided with a second groove, and the second protrusion is adapted to fit into the second groove and the countersink on the workpiece.

It can be understood that when the size of the sinking groove on the workpiece is matched with that of the second bulge, the working head 2 is not required to be installed, and the wrench body 1 is directly used for operating the workpiece; when the size of the sinking groove on the workpiece is inconsistent with that of the second bulge, the working head 2 is arranged on the wrench body 1, and the caliber of the clamping opening of the plurality of wrench teeth 23 is adjusted through the adjusting device so as to be matched with the sinking groove of the workpiece and operate.

The wrench of this embodiment can only use wrench body 1 direct operation work piece, also can install work head 2 additional and adjust the work bore back operation work piece, can all use this wrench to different work pieces, has realized the flexibility and the universality that the wrench used.

In some embodiments, as shown in fig. 1 and 4, the wrench teeth 23 of the present embodiment are provided with six wrench teeth 23 circumferentially distributed along the circumference of the connecting rod 21.

It can be understood that, this embodiment sets up six spanner teeth 23 for the grip opening that spanner teeth 23 tip formed also is regular hexagon, can form stable clamping action to the hexagonal bolt, and simultaneously, the distance of spanner teeth 23 of this embodiment from the axis of connecting rod 21 can be between 2.5mm ~ 6.66mm, can be applicable to the hexagonal bolt of M4 to M8 size, has satisfied the requirement of bolt size commonly used, has realized the suitability of spanner to the bolt commonly used.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; while the utility model has been described in detail with reference to the foregoing embodiments, it will be appreciated by those skilled in the art that variations may be made in the techniques described in the foregoing embodiments, or equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A wrench, comprising: a wrench body and a working head;

2. The wrench of claim 1, wherein the adjustment assembly includes a drive member and a plurality of pull lines;

3. The wrench of claim 2, wherein the drive member includes a connection sleeve and a lock nut; the connecting rod comprises a first rod body section and a second rod body section;

4. A wrench as claimed in claim 3, wherein the peripheral wall of the second shank segment is provided with a plurality of guide slots;

5. The wrench of claim 4, wherein the wrench teeth include a guide section and a gripping head;

6. The wrench of claim 4, wherein the connecting rod further comprises a stop section; the limiting section is arranged between the first rod body section and the second rod body section;

7. A wrench as claimed in claim 3, wherein the guide structure comprises a wiring slot, a rope passage and a rope hole;

8. The wrench of any one of claims 1-7 wherein the wrench body includes a "T" handle and an extension;

9. The wrench of claim 8, wherein the second end of the extension bar is provided with a first recess, the first end of the connecting rod is provided with a first protrusion, and the first recess is adapted to mate with the first protrusion and a tip on the workpiece;

10. The wrench of any one of claims 1-7 wherein there are six of the wrench teeth circumferentially spaced about the connecting rod.