CN210238943U

CN210238943U - Sleeve device for fastener

Info

Publication number: CN210238943U
Application number: CN201920920316.0U
Authority: CN
Inventors: Mingguo Li; 李明国; Deyong Wang; 王德永; Meng Wang; 王孟; Penghui Zhu; 朱彭辉; Ruichao Guan; 管瑞超; Chao Wang; 王超
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-04-03
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a sleeve device for a fastener, which comprises a sleeve, wherein one end of the sleeve is provided with a first inner hole, and the cross section of the first inner hole is of a polygonal structure; a plurality of telescopic bodies which are arranged in parallel are inwards sleeved in the first inner hole of the sleeve along the radial direction; the telescopic body is of a cylindrical structure, and the cross sections of the outer side surface and the inner side surface of the telescopic body are both of polygonal structures; the outer side surface of the outermost telescopic body is in sliding fit with the side wall of the first inner hole; the inner side surface of the telescopic body is in sliding fit with the outer side surface of the adjacent telescopic body; the inner side surface of the innermost telescopic body is in sliding fit with a telescopic column body; a first spring is arranged at one end of the telescopic body close to the end surface of the first inner hole; and a second spring is arranged at one end of the telescopic column body close to the end surface of the first inner hole. The utility model discloses set up a plurality of concertina body in the sleeve, consequently can realize the fastener of a sleeve adaptation a plurality of specifications, save more change sleeve time.

Description

Sleeve device for fastener

Technical Field

The utility model relates to an engineering machine tool technical field especially relates to a sleeve device for fastener.

Background

At present, the sleeve structure of the assembly fastener mostly adopts a standard structure as shown in figure 1, when in use, a nut to be fastened is clamped into a corresponding nut groove, and then the sleeve is rotated to drive the nut to rotate, so that the fastening effect is achieved. However, the sleeve is suitable for fasteners with single specification, and the sleeve is frequently replaced on occasions with large quantity of fasteners and particularly large specification, so that the working efficiency is influenced.

It is therefore desirable to provide a sleeve assembly that can accommodate multiple sizes of fasteners without replacement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing a sleeve device for a fastener.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sleeve device for a fastener comprises a sleeve, wherein one end of the sleeve is provided with a first inner hole, and the cross section of the first inner hole is of a polygonal structure; a plurality of telescopic bodies which are arranged in parallel are inwards sleeved in the first inner hole of the sleeve along the radial direction;

the telescopic body is of a cylindrical structure, and the cross sections of the outer side surface and the inner side surface of the telescopic body are both of polygonal structures; the outer side surface of the outermost telescopic body is in sliding fit with the side wall of the first inner hole; the inner side surface of the telescopic body is in sliding fit with the outer side surface of the adjacent telescopic body; the inner side surface of the innermost telescopic body is in sliding fit with a telescopic column body;

a plurality of first springs are uniformly arranged at one end of the telescopic body close to the end face of the first inner hole along the circumferential direction, and the other ends of the first springs are fixedly connected with the end face of the first inner hole;

one end of the telescopic column body close to the end face of the first inner hole is evenly provided with a plurality of second springs along the circumferential direction, and the other ends of the second springs are fixedly connected with the end face of the first inner hole.

Preferably, the other end of the sleeve is provided with a connecting end for installing a fastening wrench.

Preferably, one end of the telescopic body, which is connected with the first spring, is uniformly provided with a plurality of first connecting columns along the circumferential direction, and the first spring is fixedly arranged on the first connecting columns.

Preferably, one end of the telescopic cylinder connected with the second spring is uniformly provided with a plurality of second connecting columns along the circumferential direction, and the second spring is fixedly arranged on the second connecting columns.

Preferably, a guide column body is arranged at the joint of the first inner hole end face and the first spring and the second spring, and the end parts of the first spring and the second spring are sleeved on the corresponding guide column bodies.

Preferably, the guide cylinder is connected with the end face of the first inner hole in an adhering mode.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses sleeve device for fastener sets up a plurality of flexible body in the sleeve, because the polygon size of the flexible body lateral surface of difference and medial surface can with different specification fastener phase-matches, consequently can realize the fastener of a sleeve adaptation a plurality of specifications, sparingly change sleeve time to realize the saving of time and the promotion of efficiency under the condition of the great and many specifications of quantity by the fastener operation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of a sleeve according to the prior art;

FIG. 2 is a schematic structural view of the sleeve device for fastener according to the present invention;

FIG. 3 is a schematic left side view of the fastener sleeve assembly of the present invention;

wherein:

0-fastened piece, 01-middle stud and 02-nut;

1-sleeve, 2-telescopic body, 3-telescopic column, 4-first spring, 5-second spring, 6-connecting end, 7-first connecting column, 8-second connecting column and 9-guide column.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

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.

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 2-3, a sleeve device for a fastener comprises a sleeve 1, wherein one end of the sleeve 1 is provided with a first inner hole, and the cross section of the first inner hole is of a polygonal structure; a plurality of telescopic bodies 2 which are arranged in parallel are inwards sleeved in the first inner hole of the sleeve 1 along the radial direction; the inner side wall of the first inner hole and the inner side surfaces of the different telescopic bodies 2 are matched with the outer side walls of fasteners with different specifications;

the telescopic body 2 is of a cylindrical structure, the cross sections of the outer side surface and the inner side surface of the telescopic body 2 are of polygonal structures, and the polygonal sizes of the outer side surface and the inner side surface of different telescopic bodies 2 can be matched with fasteners of different specifications; the outer side surface of the outermost telescopic body is in sliding fit with the side wall of the first inner hole; the inner side surface of the telescopic body is in sliding fit with the outer side surface of the adjacent telescopic body; the inner side surface of the innermost telescopic body is in sliding fit with a telescopic column body 3;

one end of the telescopic body 2 close to the end face of the first inner hole is uniformly provided with a plurality of first springs 4 along the circumferential direction, and the other ends of the first springs 4 are fixedly connected with the end face of the first inner hole;

one end of the telescopic column body 3 close to the end face of the first inner hole is evenly provided with a plurality of second springs 5 along the circumferential direction, and the other ends of the second springs 5 are fixedly connected with the end face of the first inner hole.

Preferably, the other end of the sleeve 1 is provided with a connecting end 6 for installing a fastening wrench, for example, for connecting an allen key, and the connecting end 6 is a groove with a hexagonal cross section.

Preferably, a plurality of first connecting columns 7 are uniformly arranged at one end of the telescopic body 2 connected with the first spring 4 along the circumferential direction, and the first spring 4 is fixedly arranged on the first connecting columns 7.

Preferably, the end that flexible cylinder 3 is connected with second spring 5 evenly is provided with a plurality of second spliced poles 8 along the circumferencial direction, second spring 5 is fixed to be set up on second spliced pole 8.

Preferably, a guide column 9 is arranged at the joint of the first inner hole end face and the first spring 4 and the second spring 5, and the end parts of the first spring 4 and the second spring 5 are sleeved on the corresponding guide column 9; the guide column 9 plays a role in guiding the spring and prevents the first spring 4 and the second spring from being crushed.

Preferably, the guide cylinder 9 is adhesively connected to the end face of the first bore.

A sleeve device for a fastener comprises the following specific embodiments:

when the telescopic screw is used, the middle stud 01 of the fastened piece 0 is aligned to the middle telescopic cylinder 3 and the corresponding telescopic body, the nut 02 is aligned to the corresponding telescopic body 2 at the moment, the fastened piece 0 has different specifications, the number of the pressed telescopic bodies 2 is different, and when the fastened piece 0 has the smallest specification, the middle stud 01 can only be aligned to the telescopic cylinder 3; then pressing to the right, at the moment, the telescopic column 3 aligned with the middle stud 01 and the corresponding telescopic body slide to the right and compress the corresponding first spring 4 and the second spring 5 to the right until the end face of the nut 02 contacts the end face of the telescopic body, and at the moment, continuing pressing to the right until the nut 02 of the fastener 0 is clamped into the inner side face of the corresponding telescopic body 2; a corresponding wrench is then attached to the connecting end 6 of the sleeve 1 and the sleeve 1 is subsequently rotated, whereupon the uncompressed telescopic body exerts a force on the nut 02, thereby completing the rotation of the fastener. Because the polygon size of 2 lateral surfaces of different telescopic bodies and medial surface can with different specification fasteners phase-match, consequently can realize the fastener of a plurality of specifications of a sleeve adaptation, save and change the sleeve time to realize the saving of time and the promotion of efficiency under the condition of the great and many specifications of quantity by the fastener operation.

In the description of the present invention, it is to be understood that the terms "right" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims

1. A sleeve device for a fastener is characterized by comprising a sleeve, wherein one end of the sleeve is provided with a first inner hole, and the cross section of the first inner hole is of a polygonal structure; a plurality of telescopic bodies which are arranged in parallel are inwards sleeved in the first inner hole of the sleeve along the radial direction;

2. A sleeve device for a fastener according to claim 1, wherein the other end of said sleeve is provided with a connecting end for mounting a fastening wrench.

3. The socket device for fastener according to claim 1, wherein the end of the telescopic body connected to the first spring is uniformly provided with a plurality of first connecting posts along the circumferential direction, and the first spring is fixedly arranged on the first connecting posts.

4. The socket device for the fastener according to claim 1, wherein a plurality of second connecting columns are uniformly arranged at one end of the telescopic column body connected with the second springs along the circumferential direction, and the second springs are fixedly arranged on the second connecting columns.

5. The sleeve device for the fastener according to claim 1, wherein a guide post is provided at a connection portion of the first inner bore end surface and the first spring, and a connection portion of the second spring, and ends of the first spring and the second spring are respectively fitted over the corresponding guide post.

6. A socket assembly for a fastener, according to claim 5, wherein said guide post is adhesively attached to the end face of the first bore.