CN217401412U

CN217401412U - Threaded connection anti-loosening structure of nut and bolt

Info

Publication number: CN217401412U
Application number: CN202220037754.4U
Authority: CN
Inventors: 谈国伟; 廖勇; 冉荣获
Original assignee: Sichuan Dongfang Longyuan Power Equipment Co ltd
Current assignee: Sichuan Dongfang Longyuan Power Equipment Co ltd
Priority date: 2022-01-08
Filing date: 2022-01-08
Publication date: 2022-09-09
Anticipated expiration: 2032-01-08

Abstract

The utility model discloses a threaded connection anti loosening structure of nut bolt relates to fastener technical field. The utility model discloses a two compressing tablets, first bolt has been installed to the inside of two compressing tablets, and screw-thread fit has first nut on the first bolt, and first pressure increases the piece doubly and is located one side of one of them compressing tablet, and second pressure increases the piece doubly and is located one side of another compressing tablet. The utility model discloses can have enough elasticity pretightning force deposit to correspond the fastener and be located high-frequency vibration, the changeable complicated operating mode of load, this device can be applicable to the use scene that current product is difficult to competence, and the use of this device can not lead to the fact destruction to the nut-bolt (double-screw bolt) product surface that needs locking, and is friendly to the fastener product.

Description

Threaded connection anti-loosening structure of nut and bolt

Technical Field

The utility model belongs to the technical field of the fastener, especially, relate to a threaded connection anti loosening structure of nut bolt.

Background

The vast majority of connecting threads used in reality can be self-locked, and can be guaranteed not to loosen automatically after being screwed down under the condition of no external interference and vibration. However, under the action of impact, vibration or variable load, or when the temperature change is large, the friction force between the threaded connections which resists relative movement changes, or even disappears completely, thereby gradually loosening the threads.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a threaded connection anti loosening structure of nut bolt has solved the easy not hard up technical problem of threaded connection of current nut bolt.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

a threaded connection anti-loose structure of a nut and bolt comprises two pressing pieces, wherein a first bolt is arranged inside the two pressing pieces, and a first nut is matched with the first bolt through threads;

the first pressure multiplying piece is positioned on one side of one of the pressing pieces;

the second pressure time-increasing piece is positioned on one side of the other pressing piece, one end of the second pressure time-increasing piece is clamped with one end of the second pressure time-increasing piece, and a second bolt is arranged between the other end of the second pressure time-increasing piece and the other end of the second pressure time-increasing piece.

Optionally, a first through hole is formed in one side of the first pressure doubling piece, a second through hole is formed in one side of the second pressure doubling piece, the second bolt is located in the first through hole and the second through hole, a second nut is installed at the end, far away from the first pressure doubling piece, of the second bolt, a hook strip is installed on one side of the second pressure doubling piece, a plurality of inclined teeth are installed on one side of the first pressure doubling piece, the inclined teeth are matched with the hook strip, and the first pressure doubling piece and the second pressure doubling piece are located through the inclined teeth and the hook strip.

Optionally, a notch is formed in one side of the pressing piece, the third through hole is matched with the first bolt, the third through hole is formed in one side of the pressing piece, the fixing block is arranged inside the third through hole, the fixing block is provided with the thread winding wire, and the fixing block is placed through the third through hole conveniently.

The embodiment of the utility model has the following beneficial effect:

the utility model discloses an embodiment can have enough elasticity pretightning force deposit to the complicated operating mode that the correspondence fastener is located high-frequency oscillation, load are changeable, and this device can be applicable to the use scene that current product is difficult to competence, and the use of this device can not lead to the fact destruction to needs locking nut-bolt (double-screw bolt) product surface, and is friendly to the fastener product.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

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 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic top view of an embodiment of the present invention;

fig. 3 is a schematic view of a first bolt structure according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a second pressure-multiplying chip and a first pressure-multiplying chip according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

the pressure strip 1, the third through hole 101, the breach 102, first pressure increase piece 2 doubly, first through-hole 201, skewed tooth 202, second pressure increase piece 3 doubly, second through-hole 301, collude strip 302, screw thread kinking 4, fixed block 401, second bolt 5, second nut 6, first nut 7, first bolt 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

Referring to fig. 1-4, in the present embodiment, a screw connection anti-loosening structure for a nut and a bolt is provided, including: the two pressing pieces 1 are internally provided with a first bolt 8, and the first bolt 8 is in threaded fit with a first nut 7;

the first pressure multiplying piece 2 is positioned on one side of one of the pressing pieces 1;

the second pressure doubling sheet 3 is positioned on one side of the other pressing sheet 1, one end of the second pressure doubling sheet 3 is clamped with one end of the second pressure doubling sheet 3, and a second bolt 5 is arranged between the other end of the second pressure doubling sheet 3 and the other end of the second pressure doubling sheet 3.

Firstly, a first nut 7 is in threaded fit on a first bolt 8, then two pressing pieces 1 are placed on two sides of the first bolt 8, then a first pressure-multiplying piece 2 and a second pressure-multiplying piece 3 are respectively placed on two sides of the two pressing pieces 1 and clamped, then one ends of the first pressure-multiplying piece 2 and the second pressure-multiplying piece 3 are fixed through a second bolt 5 and a second nut 6, then a fixing block 401 is installed in a third through hole 101, and a thread winding wire 4 is installed on one side of the fixing block 401, so that installation of the nut and the bolt or the stud is completed;

when the nut and the bolt or the stud are required to be disassembled, the steps are referred.

The device can be suitable for the use scene that the existing product is hard to be competent, the use of the device can not damage the surface of a nut-bolt (stud) product needing anti-loosening, the device is friendly to the product of the fastener, the device can be repeatedly disassembled and used, the anti-loosening effect is not reduced, the reusability is good, the device is different from the prior anti-loosening structure that only restricts the nut from rotating but cannot ensure the bolt from rotating so as to cause anti-loosening failure, the device can prevent the relative rotation between the nut and the bolt (stud), the anti-loosening leak does not exist, the device is different from the prior anti-loosening structure that the hexagon slotted nut or other nuts are needed, and the device has the requirement of prefabricating a tail hole by the bolt, and is suitable for all national standard nut and bolt connection occasions, the device is convenient to assemble, disassemble and use, and different from a permanent anti-loose method, welding anti-loose and impact point anti-loose damage of a fastener product are not reusable, and the device can be repeatedly used for many times.

Referring to fig. 4, in the embodiment, a first through hole 201 is formed in one side of the first pressure doubling plate 2, a second through hole 301 is formed in one side of the second pressure doubling plate 3, the second bolt 5 is located in the first through hole 201 and the second through hole 301, the second nut 6 is installed at the end of the second bolt 5 away from the first pressure doubling plate 2, a hook strip 302 is installed at one side of the second pressure doubling plate 3, a plurality of helical teeth 202 are installed at one side of the first pressure doubling plate 2, and the helical teeth 202 are matched with the hook strip 302, so that the first pressure doubling plate 2 is conveniently fixed on the second pressure doubling plate 3 through the helical teeth 202.

Referring to fig. 3, a notch 102 is formed in one side of the pressing piece 1 of the present embodiment, the third through hole 101 is matched with the first bolt 8, the third through hole 101 is formed in one side of the pressing piece 1, a fixing block 401 is installed inside the third through hole 101, and the fixing block 401 is installed with a thread winding wire 4, so that the first bolt 8 can be conveniently fixed through the notch 102.

Example 1: in one aspect of the embodiment, in order to minimize the situation where the second pressure doubling plate 3 is tilted after installation, the present embodiment provides two alternative embodiments.

Embodiment 1.1, in this embodiment, the hook strip 302 on the second pressure doubling plate 3 is matched with the helical tooth 202, so that the occurrence of the situation that the second pressure doubling plate 3 is inclined after being installed is reduced, and further, the stability of the second pressure doubling plate 3 after being installed is improved.

Embodiment 1.2, in this embodiment, the second bolt 5 is located in the first through hole 201 of the second pressure times increasing piece 3, and the occurrence of shaking of the second pressure times increasing piece 3 after installation is reduced.

The above embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying 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 capable of operation in sequences other than those illustrated or described herein.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Claims

1. The utility model provides a threaded connection anti loosening structure of nut and bolt which characterized in that includes:

the two pressing pieces (1) are internally provided with first bolts (8), and the first bolts (8) are in threaded fit with first nuts (7);

the first pressure multiplying sheet (2) is positioned on one side of one pressing sheet (1);

the second pressure time-increasing piece (3) is located on one side of the other pressing piece (1), one end of the second pressure time-increasing piece (3) is clamped with one end of the second pressure time-increasing piece (3), and a second bolt (5) is arranged between the other end of the second pressure time-increasing piece (3) and the other end of the second pressure time-increasing piece (3).

2. The threaded connection anti-loosening structure for the nut and bolt according to claim 1, wherein a first through hole (201) is formed in one side of the first pressure multiplying piece (2), and a second through hole (301) is formed in one side of the second pressure multiplying piece (3).

3. The threaded connection anti-loosening structure for nuts and bolts according to claim 2, wherein the second bolt (5) is located in the first through hole (201) and the second through hole (301), and the end of the second bolt (5) far away from the first pressure multiplier piece (2) is provided with the second nut (6).

4. The threaded connection anti-loosening structure for nuts and bolts according to claim 1, wherein one side of the second pressure multiplying piece (3) is provided with a hook strip (302), one side of the first pressure multiplying piece (2) is provided with a plurality of helical teeth (202), and the helical teeth (202) are matched with the hook strip (302).

5. The threaded connection anti-loosening structure for nuts and bolts according to claim 1, wherein one side of the pressing piece (1) is provided with a notch (102), and the third through hole (101) is matched with the first bolt (8).

6. The threaded connection anti-loosening structure for the nuts and bolts according to claim 1, wherein a third through hole (101) is formed in one side of the pressing piece (1), a fixing block (401) is installed inside the third through hole (101), and a threaded winding wire (4) is installed on the fixing block (401).