CN210819302U - Spanner - Google Patents

Abstract

The utility model provides a wrench, including the wrench body, the last installation department that has of wrench body, the wrench still includes: the sleeve is rotatably connected with the wrench main body and provided with a first opening which is used for being clamped and matched with a part to be wrenched, and the sleeve is provided with a clamping part; the clamping piece is arranged on the mounting part, and at least part of the clamping piece is clamped with the clamping part so as to limit the relative rotation between the sleeve and the wrench main body through the clamping piece; when the torque of the wrench during working is larger than the preset torque, the clamping piece is sheared under the shearing action of the mounting part and the clamping part, so that the sleeve and the wrench body can rotate relatively. The utility model discloses a torque wrench structure among the prior art problem complicated has been solved to the spanner.

Description

Spanner

Technical Field

The utility model relates to an instrument field particularly, relates to a spanner.

Background

At present, common wrenches on the market cannot accurately control torque and cannot be used in occasions with strict requirements on torque.

In addition, in the prior art, there is a torque wrench capable of controlling torque, which belongs to a high precision tool although it can control torque precisely, and which has a complex structure, high requirement for production precision and high cost.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a wrench to solve the problem of complex torque wrench structure in the prior art.

In order to achieve the above object, the utility model provides a wrench, including the wrench main part, the last installation department that has of wrench main part, the wrench still includes: the sleeve is rotatably connected with the wrench main body and provided with a first opening which is used for being clamped and matched with a part to be wrenched, and the sleeve is provided with a clamping part; the clamping piece is arranged on the mounting part, and at least part of the clamping piece is clamped with the clamping part so as to limit the relative rotation between the sleeve and the wrench main body through the clamping piece; when the torque of the wrench during working is larger than the preset torque, the clamping piece is sheared under the shearing action of the mounting part and the clamping part, so that the sleeve and the wrench body can rotate relatively.

Further, the sleeve is detachably connected with the wrench main body.

Further, the wrench body has a socket mounting cavity therein, and at least a portion of the socket is rotatably mounted in the socket mounting cavity.

Furthermore, a first limiting part and a second limiting part are arranged on the sleeve, and the first limiting part and the second limiting part are arranged at intervals so as to limit at least part of the sleeve in the sleeve mounting cavity; at least one of the first limiting part and the second limiting part is detachably connected with the main body part of the sleeve.

Furthermore, the first limiting part is a limiting flange which is arranged at the first end part of the sleeve, and the second limiting part is a clamp spring; be equipped with the spacing groove on the telescopic second end to after telescopic second end passed the sleeve installation cavity, through installing the jump ring cooperation at the spacing inslot, in order to carry on spacingly to the sleeve.

Further, the at least part of installation department is the mounting groove, the notch and the sleeve installation cavity intercommunication of mounting groove, and joint spare detachably sets up in the mounting groove, and the at least part of joint spare stretches into in the sleeve installation cavity to with joint portion joint.

Further, the spanner includes the elastic component, and elastic component one end is connected with joint spare, and the elastic component other end is connected with the spanner main part to under the elastic action of elastic component, make joint spare and joint portion keep the joint.

Further, the mounting part comprises a mounting groove, the wrench comprises a positioning sleeve, and at least part of the positioning sleeve is mounted in the mounting groove; the locating sleeve is internally provided with an installation cavity, and the elastic piece and the clamping piece are both installed in the installation cavity.

Furthermore, the positioning sleeve is made of rubber; and/or the mounting cavity is provided with a first cavity section matched with the size of the clamping piece, and the clamping piece is mounted in the first cavity section; the mounting cavity is provided with a second cavity section matched with the elastic piece in size, and the elastic piece is mounted in the second cavity section; the cross-sectional area of the second cavity section is greater than the cross-sectional area of the first cavity section.

Furthermore, the wrench main body is provided with a second opening which is matched with the part to be wrenched in a clamped mode, the wrench main body is strip-shaped, and the first opening and the second opening are respectively arranged at two opposite ends of the wrench main body.

Furthermore, the clamping piece is made of metal or plastic, and when the shearing force borne by the clamping piece is larger than the preset shearing force, the clamping piece is sheared off.

Use the technical scheme of the utility model the spanner includes the spanner main part, has the installation department in the spanner main part, and the spanner still includes: the sleeve is rotatably connected with the wrench main body and provided with a first opening which is used for being clamped and matched with a part to be wrenched, and the sleeve is provided with a clamping part; the clamping piece is arranged on the mounting part, and at least part of the clamping piece is clamped with the clamping part so as to limit the relative rotation between the sleeve and the wrench main body through the clamping piece; wherein, when the moment of torsion when the spanner work was greater than predetermined moment of torsion, joint spare was cut under the shearing action of installation department and joint portion to but make sleeve and spanner main part relative rotation, thereby avoid treating to pull the part and apply bigger moment of torsion, the realization is to the control of moment of torsion. Since the specific material has a fixed shear strength σ c, after the material and the cross-sectional area S of the snap member are determined, the shear force F to shear the snap member is a fixed value F σ c S, and at this time, the torque T provided by the wrench is a fixed value T F R, where R is the sleeve radius. Through setting up mutual pivoted sleeve and spanner main part to adopt joint spare restriction to take place relative rotation between the two, when the moment of torsion reaches the default, joint spare is cut, and sleeve and spanner main part take place relative rotation, avoid exerting bigger moment of torsion to the work position. The preset value of the torque can be controlled by changing materials of different clamping pieces and controlling the sectional area S of the clamping pieces, so that the torque is controlled. Like this, realized the control to the moment of torsion with simple structure, solved the complicated problem of torque wrench structure among the prior art.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a wrench according to the present invention;

FIG. 2 shows a schematic view of a socket of the wrench according to FIG. 1;

fig. 3 shows a schematic structural view of a second embodiment of the wrench according to the present invention;

figure 4 shows an assembly schematic of a second embodiment of a wrench according to the invention;

FIG. 5 shows a cross-sectional view of the wrench according to FIG. 4;

fig. 6 shows an enlarged schematic view of a partial region of a cross-sectional view of the embodiment of the wrench according to fig. 5.

Wherein the figures include the following reference numerals:

1. a wrench body; 11. a sleeve mounting cavity; 12. a second opening; 13. an installation part; 2. a sleeve; 21. a limiting flange; 22. a limiting groove; 23. a first opening; 24. a clamping part; 3. a clamp spring; 4. a clamping piece; 5. an elastic member; 6. a positioning sleeve.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 6, the present invention provides a wrench, including a wrench body 1, the wrench body 1 has an installation portion 13, the wrench further includes: the wrench comprises a sleeve 2, wherein the sleeve 2 is rotatably connected with a wrench main body 1, the sleeve 2 is provided with a first opening 23 used for being clamped and matched with a component to be wrenched, and the sleeve 2 is provided with a clamping part 24; the clamping piece 4 is arranged on the mounting part 13, and at least part of the clamping piece 4 is clamped with the clamping part 24 so as to limit the relative rotation between the sleeve 2 and the wrench main body 1 through the clamping piece 4; when the torque of the wrench in operation is larger than the preset torque, the clamping piece 4 is sheared under the shearing action of the mounting part 13 and the clamping part 24, so that the sleeve 2 and the wrench body 1 can rotate relatively.

The wrench of the utility model comprises a wrench body 1 and a sleeve 2, wherein the wrench body 1 is provided with an installation part 13, and the sleeve 2 is provided with a clamping part 24; the clamping piece 4 is arranged on the mounting part 13, and at least part of the clamping piece 4 is clamped with the clamping part 24 so as to limit the relative rotation between the sleeve 2 and the wrench main body 1 through the clamping piece 4; wherein, when the moment of torsion when the spanner work is greater than predetermined moment of torsion, joint spare 4 is cut under the shearing action of installation department 13 and joint portion 24 to make sleeve 2 and spanner main part 1 rotate relatively, thereby avoid treating and apply bigger moment of torsion to the part of pulling, realize the control to the moment of torsion, prevent to treat to pull the part because of the spanner and apply too big moment of torsion, and damage and wait to pull part or spanner.

Since the specific material has a fixed shear strength σ c, after the material and the cross-sectional area S of the snap-in piece 4 are determined, the shear force F shearing the snap-in piece is a fixed value F σ c S, and at this time, the torque T provided by the wrench is a fixed value T F R, where R is the radius of the sleeve; namely, the central torque of the sleeve is equal to the shearing strength of the clamping piece, and the cutting section area of the clamping piece is equal to the shearing radius of the clamping piece. When the material of the clamping piece 4 is selected, the desired torque value can be obtained by adjusting the cross section and the shearing radius of the clamping piece 4, and the material of the clamping piece 4 can be metal, plastic and the like; preferably, the clamping member 4 is made of aluminum alloy.

Through setting up but mutual pivoted sleeve 2 and wrench body 1 to adopt joint spare 4 to restrict and take place relative rotation between the two, when the moment of torsion reaches the default, joint spare 4 is cut, and sleeve 2 takes place relative rotation with wrench body 1, avoids exerting bigger moment of torsion to the work position. The preset value of the torque can be controlled by changing different materials of the clamping piece 4 and controlling the sectional area S of the clamping piece 4, so that the torque is controlled. Like this, realized the control to the moment of torsion with simple structure, solved the complicated problem of torque wrench structure among the prior art.

In order to facilitate processing and maintenance of the wrench, the sleeve 2 is detachably connected with the wrench body 1.

In this embodiment, the wrench body 1 has a socket mounting cavity 11, and at least a part of the socket 2 is rotatably mounted in the socket mounting cavity 11.

Specifically, in order to realize the detachable connection of the sleeve 2 and the wrench body 1, the sleeve 2 is provided with a first limiting part and a second limiting part, and the first limiting part and the second limiting part are arranged at intervals so as to limit at least part of the sleeve 2 in the sleeve mounting cavity 11; at least one of the first and second stoppers is detachably connected to the main body portion of the sleeve 2. Like this, can be spacing at least part of sleeve 2 in sleeve installation cavity 11 through first spacing portion and the spacing portion of second, according to the use needs, can dismantle first spacing portion and the spacing portion of second, and then can conveniently take off sleeve 2, the manufacturing and the maintenance of the spanner of being convenient for.

Of course, this design to facilitate disassembly also facilitates the replacement of the socket 2, so that a socket 2 with a suitable first opening 23 can be selected according to the size of the different parts to be pulled.

Specifically, as shown in fig. 1 to 3, the first limiting portion is a limiting flange 21, the limiting flange 21 is disposed at the first end of the sleeve 2, and the second limiting portion is the clamp spring 3; be equipped with spacing groove 22 on sleeve 2's the second end to after sleeve 2's second end passed sleeve installation cavity 11, through installing jump ring 3 cooperation in spacing groove 22, in order to carry on spacingly to sleeve 2. Through dismantling jump ring 3, can conveniently realize the dismantlement to sleeve 2. The clamp spring 3 has certain deformability, so that the clamp spring 3 can be conveniently arranged in the limiting groove 22 by utilizing the deformability of the clamp spring 3, the sleeve 2 is easily limited, and the clamp spring 3 can be conveniently taken down from the limiting groove 22, so that the sleeve 2 can be conveniently mounted and dismounted.

As shown in fig. 1, at least part of installation portion 13 is the mounting groove, and the notch and the sleeve installation cavity 11 intercommunication of mounting groove, joint spare 4 detachably set up in the mounting groove, and at least part of joint spare 4 stretches into in the sleeve installation cavity 11 to with joint portion 24 joint. The clamping portion 24 can be any structure capable of being clamped with the clamping piece 4, such as a groove, a convex edge and the like.

In addition, the circlip 3 is a ring structure having an installation opening, and the circlip 3 can be clamped into the limiting groove 22 of the sleeve 2 through the installation opening by operating the installation opening to open. And, when needs are changed joint spare 4, can be through rotating this jump ring, make this installing opening relative with the mounting groove, and then change joint spare 4 in to the mounting groove through this installing opening.

Preferably, the snap spring has operating protrusions on both sides of the mounting opening, and the operating protrusions are provided with operating holes. Therefore, when the clamp spring is installed or driven to rotate, the clamp spring can be driven to deform or rotate by the operating piece inserted into the operating hole.

In this embodiment, the clamping portion 24 is a groove disposed on the sidewall of the sleeve 2, and the groove extends to at least one end surface of the sleeve 2. Preferably, the groove extends to the upper end surface of the sleeve 2. Thus, one end of the clamping member 4 can be inserted into the groove, thereby stably clamping with the groove.

As shown in fig. 3, the wrench includes an elastic member 5, one end of the elastic member 5 is connected to the clamping member 4, and the other end of the elastic member 5 is connected to the wrench body 1, so that the clamping member 4 and the clamping portion 24 are kept clamped under the elastic action of the elastic member 5. Through setting up elastic component 5, can realize that joint spare 4 keeps the chucking constantly with joint portion 24, be favorable to guaranteeing the control effect to the moment of torsion. In addition, after the wrench is used once, the clamping pieces 4 are cut off, and under the elastic action of the elastic pieces 5, the clamping pieces 4 can be pushed forward and supplemented, so that the rest clamping pieces 4 can be continuously clamped with the clamping parts 24, and the wrench can be used again.

Specifically, elastic component 5 is the spring, and the one end and the joint 4 of spring are connected, and the other end and the spanner main part 1 of spring are connected.

When the wrench is used for locking a nut or a bolt, the sleeve 2 is clamped with the clamping piece 4, when the rated torque is reached, the clamping piece 4 is cut off, the slipping phenomenon occurs between the sleeve 2 and the wrench main body 1, and at the moment, the torque required by a user is reached; if need reuse, change sleeve 2 back to initial position, joint spare 4 is in the recess of sleeve 2 is pushed into automatically under the effect of spring, and then can realize reusing.

Here, can be through selecting for use suitable spring and joint spare 4, make joint spare 4 can use many times, promptly after joint spare 4 is cut off, through the elastic force effect of spring, can make in the remaining part of joint spare 4 is continued to be pushed sleeve 2's recess, and then realize the locking between sleeve 2 and the spanner main part 1.

In addition, the clamping member 4 here can also be a disposable consumable part, that is, the clamping member 4 can only be cut off once, and after the clamping member 4 is cut off, the clamping member 4 can be replaced by rotating the clamp spring, so as to facilitate the next use.

In order to improve the positioning effect on the clamping piece 4 and the elastic piece 5, the mounting part 13 comprises a mounting groove, the wrench comprises a positioning sleeve 6, and at least part of the positioning sleeve 6 is mounted in the mounting groove; 6 inside installation chambeies that have of position sleeve, the installation intracavity is all installed to elastic component 5 and joint 4. Thus, the clamping piece 4 and the elastic piece 5 can be accurately installed and positioned, and the working precision of the wrench is guaranteed.

In the embodiment, as shown in fig. 6, the positioning sleeve 6 is made of rubber, and the positioning sleeve 6 made of rubber can be better installed and matched with the installation part 13; and/or the mounting cavity is provided with a first cavity section matched with the size of the clamping piece 4, and the clamping piece 4 is mounted in the first cavity section; the mounting cavity is provided with a second cavity section matched with the size of the elastic piece 5, and the elastic piece 5 is mounted in the second cavity section; the sectional area of the second cavity section is larger than that of the first cavity section, namely the size of the cross section of the second cavity section is larger than that of the cross section of the first cavity section along the length direction of the first cavity section and the second cavity section. In this way, the elastic member 5 can be stably installed in the second cavity section, and the elastic member 5 is prevented from entering into or coming out through the first cavity section.

In order to further improve the practicability of the wrench, the wrench body 1 is provided with a second opening 12 which is in clamping fit with the component to be wrenched, the wrench body 1 is strip-shaped, and the first opening 23 and the second opening 12 are respectively arranged at two opposite ends of the wrench body 1. When the torque is not required to be controlled or larger torque is required, the second opening 12 can be used to match with the component to be wrenched, and the use is more flexible. Preferably, the second opening 12 is a hexagonal socket.

When a user needs to pull the component to be pulled by using the rated torque, the first opening 23 can be used for pulling the component to be pulled; when a user needs a large torque, the second opening 12 can be used for wrenching the component to be wrenched, so that the wrench has two working states, and is suitable for two different components to be wrenched.

Specifically, joint 4 is metal or plastics material, and different kinds of metal or plastics have different shear strength, can select suitable metal or plastics according to required moment of torsion, and when the shearing force that joint 4 bore was greater than predetermined shearing force, joint 4 was cut. Preferably, the clamping pieces 4 are strip-shaped, and the clamping pieces 4 have different sectional areas in size, so that the clamping pieces 4 made of corresponding materials and the clamping pieces 4 with corresponding sectional sizes can be selected according to torque requirements.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the wrench of the utility model comprises a wrench body 1 and a sleeve 2, wherein the sleeve 2 is rotatably connected with the wrench body 1, and the sleeve 2 is provided with a clamping part 24; the clamping piece 4 is arranged on the mounting part 13, and at least part of the clamping piece 4 is clamped with the clamping part 24 so as to limit the relative rotation between the sleeve 2 and the wrench main body 1 through the clamping piece 4; wherein, when the moment of torsion when the spanner work is greater than predetermined moment of torsion, joint spare 4 is cut under the shearing action of installation department 13 and joint portion 24 to make sleeve 2 and spanner main part 1 rotate relatively, thereby avoid treating and apply bigger moment of torsion to the part of pulling, realize the control to the moment of torsion, prevent to treat to pull the part because of the spanner and apply too big moment of torsion, and damage and wait to pull part or spanner.

Since the specific material has a fixed shear strength σ c, after the material and the cross-sectional area S of the snap-in member 4 are determined, the shear force F to shear the snap-in member is a fixed value F σ c S, and at this time, the torque T provided by the wrench is a fixed value T F R, where R is the sleeve radius. Through setting up but mutual pivoted sleeve 2 and wrench body 1 to adopt joint spare 4 to restrict and take place relative rotation between the two, when the moment of torsion reaches the default, joint spare 4 is cut, and sleeve 2 takes place relative rotation with wrench body 1, avoids exerting bigger moment of torsion to the work position. The preset value of the torque can be controlled by changing different materials of the clamping piece 4 and controlling the sectional area S of the clamping piece 4, so that the torque is controlled. Like this, realized the control to the moment of torsion with simple structure, solved the complicated problem of torque wrench structure among the prior art.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A wrench, comprising a wrench body (1), characterized in that the wrench body (1) has a mounting portion (13) thereon, the wrench further comprising:

the wrench comprises a wrench main body (1), a sleeve (2), a first clamping part and a second clamping part, wherein the sleeve (2) is rotatably connected with the wrench main body (1), the sleeve (2) is provided with a first opening (23) used for being clamped and matched with a component to be wrenched, and the sleeve (2) is provided with a clamping part (24);

the clamping part (4), the clamping part (4) is installed on the installation part (13), at least part of the clamping part (4) is clamped with the clamping part (24) so as to limit the relative rotation between the sleeve (2) and the wrench main body (1) through the clamping part (4);

when the torque of the wrench during working is larger than the preset torque, the clamping piece (4) is sheared under the shearing action of the mounting portion (13) and the clamping portion (24), so that the sleeve (2) and the wrench body (1) can rotate relatively.

2. A wrench as claimed in claim 1, wherein said socket (2) is removably connected to said wrench body (1).

3. A wrench as claimed in claim 1, wherein said wrench body (1) has a socket mounting cavity (11) therein, and at least part of said socket (2) is rotatably mounted in said socket mounting cavity (11).

4. A wrench as claimed in claim 3, wherein the sleeve (2) is provided with a first retaining portion and a second retaining portion, the first retaining portion and the second retaining portion being spaced apart to retain at least part of the sleeve (2) within the sleeve mounting cavity (11); at least one of the first limiting part and the second limiting part is detachably connected with the main body part of the sleeve (2).

5. A wrench as claimed in claim 4, wherein said first stop portion is a stop flange (21), said stop flange (21) being provided at a first end of said sleeve (2), and said second stop portion is a circlip (3); be equipped with spacing groove (22) on the second end of sleeve (2), with sleeve (2) second end passes behind sleeve installation cavity (11), through with jump ring (3) cooperation is installed in spacing groove (22), in order to right sleeve (2) carry on spacingly.

6. The wrench as claimed in claim 3, wherein at least part of the mounting portion (13) is a mounting groove, a notch of the mounting groove is communicated with the sleeve mounting cavity (11), the joint member (4) is detachably disposed in the mounting groove, and at least part of the joint member (4) extends into the sleeve mounting cavity (11) to be connected with the joint portion (24).

7. The wrench according to claim 1, wherein the wrench comprises an elastic member (5), one end of the elastic member (5) is connected with the clamping member (4), and the other end of the elastic member (5) is connected with the wrench body (1), so that the clamping member (4) and the clamping portion (24) are kept clamped under the elastic action of the elastic member (5).

8. A wrench as claimed in claim 7, wherein said mounting portion (13) comprises a mounting slot, said wrench including a locating sleeve (6), at least part of said locating sleeve (6) being mounted in said mounting slot; the locating sleeve (6) is internally provided with an installation cavity, and the elastic piece (5) and the clamping piece (4) are installed in the installation cavity.

9. A wrench as claimed in claim 8, wherein said collar (6) is of rubber material; and/or

The mounting cavity is provided with a first cavity section matched with the clamping piece (4) in size, and the clamping piece (4) is mounted in the first cavity section; the mounting cavity is provided with a second cavity section matched with the size of the elastic piece (5), and the elastic piece (5) is mounted in the second cavity section; the cross-sectional area of the second cavity section is greater than the cross-sectional area of the first cavity section.

10. The wrench according to claim 1, wherein the wrench body (1) has a second opening (12) engaged with a component to be wrenched, the wrench body (1) is strip-shaped, and the first opening (23) and the second opening (12) are respectively disposed at two opposite ends of the wrench body (1).

11. A wrench as claimed in claim 1, wherein said clamping member (4) is made of metal or plastic, and when the shearing force applied to said clamping member (4) is greater than a predetermined shearing force, said clamping member (4) is sheared.

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