CN111390798A - universal wrench - Google Patents

Abstract

The invention discloses a universal wrench, comprising a wrench rod and a tightening part, wherein the tightening part comprises: a sleeve, a column and an elastic part; the sleeve is a hollow structure and the hollow is an inner hexagon; A mounting plate is arranged in the hollow, and the mounting plate is arranged perpendicular to the axis of the sleeve; the number of the uprights is multiple, each of the uprights corresponds to one of the elastic pieces, and a plurality of the uprights pass through the corresponding The elastic member is connected to the mounting plate, the uprights are evenly arranged parallel to the axis of the sleeve, and the uprights are limited to move only in the axial direction. The universal wrench of the present invention can be matched with the bolts only by aligning the bolts on it when in use, realizing the universality of bolts of different specifications and types (inner hexagon, outer hexagon), simple operation and improved performance. Work efficiency, and can automatically reset after use.

Description

universal wrench

technical field

The invention relates to the technical field of mechanical equipment, in particular to a universal wrench.

Background technique

A wrench is a hand tool that uses the principle of leverage to turn bolts, screws, nuts or other threaded fasteners. The wrench usually has an opening at one or both ends of the handle that can turn the bolt or nut by applying external force to the handle. Or a sleeve hole, when in use, an external force is applied to the shank in the direction of thread rotation, and the bolt or nut can be turned. Most of the current wrenches are special wrenches, which are limited by size and shape. In particular, the fasteners of imported equipment are mostly manufactured in British or American sizes, and existing wrenches cannot be used to tighten or loosen them. In order to complete the work Tasks often require the use of tools of many different formats, and when working in the field, it is impossible to carry all types and sizes of wrenches. Therefore, it is necessary to provide a universal wrench.

SUMMARY OF THE INVENTION

In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a universal wrench. The specific technical solutions are as follows:

A universal wrench includes a wrench rod and a tightening part, the tightening part includes: a sleeve, a column and an elastic part; the sleeve is a hollow structure and the hollow is an inner hexagon, and the hollow of the sleeve is provided with a an installation plate, which is arranged perpendicular to the axis of the sleeve; the number of the uprights is multiple, each of the uprights corresponds to one of the elastic pieces, and a plurality of the uprights pass through the corresponding elastic pieces The parts are connected to the mounting plate, the uprights are evenly arranged parallel to the axis of the sleeve, and the uprights are limited to move only in the axial direction.

In a possible design, one end of the upright column is flush with one end face of the sleeve in a non-working state, and is squeezed into the inside of the sleeve in a working state.

In a possible design, the mounting plate is provided with a plurality of mounting holes evenly spaced, and each mounting hole corresponds to one of the uprights; each of the uprights includes a large-diameter section, a small-diameter section and a limit head, One end of the large-diameter section is flush with the end face of the sleeve in a non-working state, the small-diameter section passes through the mounting hole, and the limiting head and the large-diameter section are respectively located on the mounting plate the two sides of the elastic piece; the elastic piece is sleeved on the small-diameter section, and the two ends are respectively abutted against the large-diameter section and the mounting plate.

In a possible design, the limiting head is a hemispherical structure, and the plane of the hemispherical structure is opposite to the mounting plate.

In a possible design, the upright is divided into a first upright in the middle and a plurality of second uprights around the first upright; the first upright is a regular hexagonal prism, and the second uprights It is a cylinder, and the cross-sectional area of the first column is larger than the cross-sectional area of the second column.

In a possible design, the other end of the sleeve is provided with a mesh plate, and the mesh plate is detachably connected to the wrench rod.

In a possible design, the mesh plate and the sleeve are fixed by welding.

In a possible design, the contact part of the screen plate and the sleeve is notched, and a V-shaped welding seam is formed by the full welding process.

In a possible design, a hexagonal hole is provided in the middle of the screen plate, and the end of the wrench rod is a hexagonal head structure adapted to the hexagonal hole.

In a possible design, the sleeve and the mounting plate are integrally formed 42CrMo steel pieces, which are nitrided to a hardness of 550-660HV; the uprights are made of 42CrMo steel pieces, which are adjusted Quality surface quenching process, hardness is 53-58HRC.

The main advantages of the technical solution of the present invention are as follows:

The universal wrench of the present invention can be matched with the bolts only by aligning the bolts on it when in use, realizing the universality of bolts of different specifications and types (inner hexagon, outer hexagon), simple operation, and improved performance. Work efficiency, and can automatically reset after use.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic three-dimensional structural diagram of a tightening portion in a universal wrench according to an embodiment of the present invention;

2 is an end view of a tightening portion of a universal wrench provided by an embodiment of the present invention;

3 is an A-A cross-sectional view of a tightening portion of a universal wrench according to an embodiment of the present invention.

Description of reference numbers:

1-Sleeve, 11-Installation plate, 2-Column, 21-First column, 22-Second column, 2a-Large diameter section, 2b-Small diameter section, 2c-Limit head, 3-Elastic part, 4- Stencil, 5-V-shaped weld.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The embodiment of the present invention provides a universal wrench, which includes a wrench rod and a tightening part. As shown in FIGS. 1-3 , the tightening part includes: a sleeve 1 , a column 2 and an elastic member 3 . The sleeve 1 is a hollow structure and the hollow is an inner hexagon. A mounting plate 11 is arranged in the hollow of the sleeve 1. The mounting plate 11 is arranged perpendicular to the axis of the sleeve 1; Corresponding to one elastic piece 3 , a plurality of uprights 2 are connected to the mounting plate 11 through corresponding elastic pieces 3 , the uprights 2 are evenly spaced parallel to the axis of the sleeve 1 , and the uprights 2 are limited to move only in the axial direction.

The working principle of the universal wrench provided by the embodiment of the present invention is described below:

Since the upright post 2 is connected to the mounting plate 11 inside the sleeve 1 through the elastic member 3, the upright post 2 will retract into the sleeve 1 when it is squeezed, and the upright post 2 that is not squeezed remains in its original state. When in use, align the sleeve 1 with the bolt, and when the bolt moves into the sleeve 1, push the column 2 against the bolt to move inward, and the column 2 located outside the bolt remains stationary, forming an accommodation suitable for the size of the bolt. cavity. By turning the tightening part with the wrench rod, the bolt can be driven to rotate.

It can be seen that the universal wrench provided by the embodiment of the present invention can be matched with the bolts only by aligning the bolts on it when in use, so as to realize the universality of bolts of different specifications and types (inner hexagon, outer hexagon) , Simple operation, improve work efficiency. And it can reset automatically after use.

Wherein, one end of the upright column 2 can be located inside the sleeve 1 in a non-working state, and the upright column 2 is protected by the sleeve 1 . Alternatively, one end of the upright column 2 can be flush with one end face of the sleeve 1 in the non-working state, and is squeezed into the interior of the sleeve 1 in the working state, so that the entire surface of the tightening part is flush. Those skilled in the art can flexibly configure the length of the upright column 2 according to the needs of on-site use.

As for how the column 2 is connected to the mounting plate 11 through the elastic member 3, an example is described below: as shown in FIG. 3, the mounting plate 11 is provided with a plurality of mounting holes evenly spaced, and each mounting hole corresponds to one column 2; Each column 2 includes a large diameter section 2a, a small diameter section 2b and a limit head 2c, one end of the large diameter section 2a is flush with the end face of the sleeve 1 in a non-working state, the small diameter section 2b passes through the installation hole, and the limit head 2c and the large-diameter section 2a are located on both sides of the mounting plate 11 respectively; the elastic member 3 is sleeved on the small-diameter section 2b and the two ends are in contact with the large-diameter section 2a and the mounting plate 11 respectively. In this way, in the non-working state, the column 2 is kept in a fixed position under the elastic force of the elastic member 3 and the limit of the limiting head 2c. After the end of use, it is reset under the elastic force of the elastic member 3.

Wherein, the elastic member 3 may be a spring. The limiting head 2c may be a hemispherical structure, and the plane of the hemispherical structure is opposite to the mounting plate 11 .

As shown in Figures 1-3, the large diameter sections 2a of the plurality of uprights 2 are evenly and densely arranged. Since the mounting holes are adapted to the small diameter sections 2b, correspondingly, the mounting holes on the mounting plate 11 are evenly spaced.

In the universal wrench provided by the embodiment of the present invention, the maximum specification of the applicable bolt is determined by the inner hexagonal hollow size of the sleeve 1. At this time, all the uprights 2 are squeezed and retracted; it is assumed that the universal wrench is centered every time it is used. In the case of , the minimum specification of the applicable bolt is determined by the size of a column 2 in the middle. At this time, only the column 2 in the middle is squeezed and retracted. And the smaller the diameter of each column 2 is, the higher the use accuracy of the universal wrench is, and the better the limiting effect of the bolt is.

Based on the above, in order to improve the use effect, as shown in Figures 1-3, the column 2 is divided into a first column 21 located in the middle and a plurality of second columns 22 located around the first column 21; the first column 21 is a regular six Prism, the second column 22 is a cylinder, and the cross-sectional area of the first column 21 is larger than the cross-sectional area of the second column 22 . In this way, the first column 21 with a larger cross-sectional area is provided as the minimum specification for applying the bolt. The second upright column 22 with a smaller cross-sectional area is arranged to improve the accuracy.

In the embodiment of the present invention, in order to improve portability, the tightening part and the wrench rod are detachably arranged. Specifically, as shown in FIG. 3 , the other end of the sleeve 1 is provided with a mesh plate 4, and the mesh plate 4 is connected to the wrench. Rods are detachably attached. For example, a hexagonal hole is provided in the middle of the screen plate 4, and the end of the wrench rod is a hexagonal head structure adapted to the hexagonal hole. With this arrangement, the screen plate 4 can be driven to rotate after the wrench rod is inserted into the screen plate 4 . And after use, pull out to complete the disassembly.

Wherein, as shown in FIG. 3 , the mesh plate 4 and the sleeve 1 can be fixed by welding. Further, the contact part of the mesh plate 4 and the sleeve 1 is processed with a gap, and a V-shaped welding seam 5 is formed by the full welding process, so as to improve the connection strength.

The universal wrench is often used in heavy machinery, so it is necessary to ensure sufficient hardness and strength. Based on this, in the embodiment of the present invention, the sleeve 1 and the mounting plate 11 are integrally formed 42CrMo steel parts, which are treated by nitriding. The nitriding hardness is 550-660HV; the column 2 is made of 42CrMo steel, which is quenched, tempered and quenched, and the hardness is 53-58HRC. With this arrangement, the strength and hardness of each component are high, and it is convenient to apply a large torque, which is suitable for the disassembly and assembly of heavy machinery. In addition, the slip phenomenon caused by wear or deformation of the column 2 can be avoided, the stability and reliability are high, and the service life is improved.

It should be noted that, in this document, relational terms such as "first" and "second" etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are all referred to the placement state shown in the accompanying drawings.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An universal wrench comprising a wrench stem and a tightening portion, the tightening portion comprising: the sleeve, the upright post and the elastic piece;

the sleeve is of a hollow structure, the hollow part of the sleeve is an inner hexagon, a mounting plate is arranged in the hollow part of the sleeve, and the mounting plate is perpendicular to the axis of the sleeve;

the quantity of stand is a plurality of, every the stand with one the elastic component corresponds, and is a plurality of the stand is through corresponding the elastic component is connected on the mounting panel, the stand is on a parallel with telescopic axis evenly arranges just the stand is spacing to can only follow axial displacement.

2. The wrench as claimed in claim 1, wherein one end of said post is flush with a side surface of said socket in the non-operating state and is pressed into said socket in the operating state.

3. The universal wrench as claimed in claim 2, wherein a plurality of mounting holes are provided in said mounting plate at regular intervals, each of said mounting holes corresponding to one of said posts;

each upright column comprises a large-diameter section, a small-diameter section and a limiting head, one end of the large-diameter section is flush with the end face of the sleeve in a non-working state, the small-diameter section penetrates through the mounting hole, and the limiting head and the large-diameter section are respectively positioned on two sides of the mounting plate;

the elastic piece is sleeved on the small-diameter section, and two ends of the elastic piece are respectively abutted to the large-diameter section and the mounting plate.

4. The wrench as claimed in claim 3, wherein said retaining head is of hemispherical configuration, said hemispherical configuration having a plane opposite said mounting plate.

5. The universal wrench as claimed in any one of claims 1 to 4, wherein said upright is divided into a first upright located at the middle and a plurality of second uprights located around said first upright;

the first upright post is a regular hexagonal prism, the second upright post is a cylinder, and the sectional area of the first upright post is larger than that of the second upright post.

6. The universal wrench as claimed in claim 2, wherein a mesh plate is provided at the other end of the socket, and the mesh plate is detachably connected to the wrench rod.

7. The wrench as claimed in claim 6, wherein said net plate is fixed to said socket by welding.

8. The universal wrench as claimed in claim 7, wherein the contact portion of the mesh plate and the sleeve is notched, and a V-shaped weld is formed by a full-length welding process.

9. The universal wrench as claimed in claim 6, wherein the middle of the mesh plate is provided with a hexagonal hole, and the end of the wrench rod is of a hexagonal structure matched with the hexagonal hole.

10. The universal wrench as claimed in claim 1, wherein the sleeve and the mounting plate are made of an integrally formed 42CrMo steel member and are nitrided to have a hardness of 550-660 HV;

the upright post is made of 42CrMo steel and is treated by a quenching and tempering surface quenching process, and the hardness is 53-58 HRC.

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