CN113550971A

CN113550971A - A thread anti-loosening structure

Info

Publication number: CN113550971A
Application number: CN202110948789.3A
Authority: CN
Inventors: 丁欣欣; 王文广; 周东珊; 李冰清; 余广
Original assignee: Zhejiang Yasha Decoration Co Ltd
Current assignee: Zhejiang Yasha Decoration Co Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-10-26

Abstract

The invention discloses a threaded anti-loosening structure, belonging to the field of fasteners. The first connector and the second connector are threadedly connected through the female thread segment and the sub-thread segment; wherein, a first anti-loosening structure is formed on the female thread segment, and a second anti-loosening structure is formed on the sub-thread segment structure, when the female thread segment and the sub-thread segment are threadedly connected, the first anti-loosening structure and the second anti-loosening structure are snap-connected to each other, thereby preventing the female thread segment and the sub-thread segment from interlocking with each other. For the loosening between the two parts, the technical scheme of the present invention is adopted, and the second anti-loosening structure at the beginning of the tooth profile of the sub-thread segment is combined with the first anti-loosening structure in the middle of the last pitch of the female thread segment to achieve a fixed and anti-loosening effect.

Description

Anti-loosening structure for threads

Technical Field

The invention belongs to the field of fasteners, and particularly relates to a thread anti-loosening structure.

Background

The female threads and the male threads are mutually connected in the thread structure, and the long-time use after the thread installation can possibly cause the loosening and the separation of the screws, cause factors such as unstable structure and the like.

The thread pitch and the thread form of the original thread structure are both traditional forms, only play a role in connection, and cannot prevent the problem that a screw is loosened or even falls off in the using process, although the thread falling-off prevention has many forms, such as double nuts (Tang's threads), cotter pins, locking wires, U-shaped nuts, adhesives (glue falling resistance), sealing tapes and the like, the thread pitch and the thread form direction are not changed, and the problem of loosening cannot be effectively solved.

Disclosure of Invention

In view of the problems in the prior art, the invention aims to provide a thread anti-loosening structure, which can achieve the purpose of stable and non-loosening installation by only one structure without other installation steps.

The invention provides a thread anti-loosening structure, which comprises a first connecting piece and a second connecting piece, wherein a female thread section is arranged on the first connecting piece, a sub-thread section is arranged on the second connecting piece, and the first connecting piece and the second connecting piece are in threaded connection through the female thread section and the sub-thread section;

the anti-loosening structure comprises a female thread section, a male thread section and a female thread section, wherein a first anti-loosening structure is formed on the female thread section, a second anti-loosening structure is formed on the male thread section, and when the female thread section is in threaded connection with the male thread section, the first anti-loosening structure and the second anti-loosening structure are connected in a clamping mode, so that loosening between the female thread section and the male thread section is prevented.

Further, first locking structure of moving is including forming in fixture block on the screw pitch of female screw thread section, second locking structure of moving is including forming in the draw-in groove of the tooth form initial position of sublead, works as female screw thread section with when sublead threaded connection, the fixture block can block extremely in the draw-in groove.

Furthermore, a positioning block is arranged on the sub-thread section, the positioning block is arranged close to the tooth form initial position of the sub-thread section, a preset gap is formed between the positioning block and the tooth form initial position of the sub-thread section, the positioning block, the tooth form initial position of the sub-thread section and the preset gap form the clamping groove together, and the positioning block is used for limiting the position of the clamping groove.

Further, the fixture block is located in the middle of the thread pitch of the female thread section.

Further, the fixture block is located in the middle of the last pitch of the female thread section.

Furthermore, the fixture block is triangular, table-shaped, circular or sawtooth-shaped; and the number thereof is 1 or more.

Further, the shape of the positioning block is matched with that of the fixture block.

Furthermore, the height of the fixture block is smaller than the tooth thickness of the female thread section, and the height of the positioning block is smaller than the tooth thickness of the sub thread section.

The invention has the beneficial effects that:

1) by adopting the technical scheme of the invention, the second anti-loosening structure at the beginning of the thread form of the sub-thread section and the first anti-loosening structure in the middle of the last pitch of the female thread section are combined to play a role in fixing anti-loosening;

2) compared with two nuts (Tang's threads) which are arranged and matched with two sub-parts, the double-nut screw structure is simple in structure and quick and convenient to install;

3) compared with the split pin and another accessory which can influence the stress condition of the thread and cause damage, the split thread locking device does not need to additionally add accessories compared with the split pin and another accessory which can influence the stress condition of the thread and cause damage;

4) compared with the U-shaped nut, the invention does not need to manufacture a copied structure; compared with adhesives and sealing tapes, the invention does not need to add a mounting step for gluing.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure: 1-a female thread segment; 2-clamping blocks; 3-minor thread segment; 4-positioning blocks; 5-card slot.

Detailed Description

The invention will be further described with reference to the accompanying drawings, to which, however, the scope of the invention is not limited.

As shown in fig. 1, a thread anti-loosening structure comprises a first connecting piece and a second connecting piece, wherein a female thread section 1 is arranged on the first connecting piece, a sub-thread section 3 is arranged on the second connecting piece, and the first connecting piece and the second connecting piece are in threaded connection through the female thread section 1 and the sub-thread section 3; the first connecting piece and the second connecting piece are various parts connected through threads.

The anti-loosening structure comprises a female thread section 1, a male thread section 3 and a female thread section 3, wherein a first anti-loosening structure is formed on the female thread section 1, a second anti-loosening structure is formed on the male thread section 3, and when the female thread section 1 is in threaded connection with the male thread section 3, the first anti-loosening structure and the second anti-loosening structure are connected in a clamping mode, so that loosening between the female thread section 1 and the male thread section 3 is prevented.

According to the thread anti-loosening structure, the first anti-loosening structure comprises the clamping block 2 formed on the thread pitch of the female thread section, the second anti-loosening structure comprises the clamping groove 5 formed at the tooth type initial position of the male thread section, and when the female thread section 1 is in threaded connection with the male thread section 3, the clamping block 2 can be clamped into the clamping groove 5.

As an embodiment of the present invention, the fixture block 2 may be disposed in the middle of the female thread section 1 at different pitches, the fixture block 2 may have different positions to perform different fixed-point fixing functions, and the fixture block 2 is disposed in the middle of the last pitch of the female thread section 1 to perform a fixing function when the male thread section 3 is twisted to the bottom.

According to the thread anti-loosening structure, the positioning block 4 is arranged on the sub-thread section 3, the positioning block 4 is arranged close to the tooth form initial position of the sub-thread section 3, a preset gap is formed between the positioning block 4 and the tooth form initial position of the sub-thread section 3, the positioning block 4, the tooth form initial position of the sub-thread section 3 and the preset gap form the clamping groove 5, and the positioning block 4 is used for limiting the position of the clamping groove 5.

The shape of the fixture block 2 is triangle, table, round or saw-toothed, and the number is 1 or more, wherein the shape of the positioning block 4 matches with the shape of the fixture block 2, the locking effect that different shapes can achieve is different, for example, the saw-toothed shape can lead the fixture block and the fixture block to be closely connected, and the round shape can be screwed in better.

According to the thread anti-loosening structure, the height of the clamping block 2 is smaller than the tooth thickness of the female thread section 1, and the height of the positioning block 4 is smaller than the tooth thickness of the male thread section 3.

Specifically, when the sub-thread section 3 of the second connecting piece is screwed to the female thread section 1 of the first connecting piece, the positioning block 4 of the sub-thread section 3 is screwed with force when touching the clamping block 2 between the thread pitches of the female thread section 1, and then the fixing can be realized.

Claims

1. A threaded anti-loosening structure, characterized by comprising a first connector and a second connector, the first connector is provided with a female thread segment (1), and the second connector is provided with sub-threads a segment (3), the first connector and the second connector are threadedly connected by the female thread segment (1) and the sub-thread segment (3);

Wherein, a first anti-loosening structure is formed on the female thread segment (1), and a second anti-loosening structure is formed on the sub-thread segment (3). When the segment (3) is threadedly connected, the first anti-loosening structure and the second anti-loosening structure are snap-connected to each other, so as to prevent the female thread segment (1) and the sub-thread segment (3) from interlocking. loose.

2. The anti-loosening structure according to claim 1, characterized in that the first anti-loosening structure comprises a block (2) formed on the pitch of the female thread segment, and the second anti-loosening structure The structure includes a clamping groove (5) formed at the initial position of the tooth profile of the sub-thread segment, and when the female thread segment (1) is threadedly connected with the sub-thread segment (3), the clamping block (2) It can be snapped into the card slot (5).

3 . The anti-loosening structure of a thread according to claim 2 , wherein a positioning block ( 4 ) is provided on the sub-thread segment ( 3 ), and the positioning block ( 4 ) is close to the sub-thread segment ( 3 . 3) The initial position of the tooth shape is set, and there is a preset gap between the initial position of the tooth shape of the sub-thread segment (3), the positioning block (4), the tooth shape of the sub-thread segment (3) The initial position and the preset gap together form the card slot (5), and the positioning block (4) is used to define the position of the card slot (5).

4 . The anti-loosening structure of a thread according to claim 2 , wherein the clamping block ( 2 ) is located in the middle of the pitch of the female thread segment ( 1 ). 5 .

5 . The anti-loosening structure of a thread according to claim 4 , wherein the clamping block ( 2 ) is located in the middle of the last pitch of the female thread segment ( 1 ). 6 .

6 . The anti-loosening structure of a thread according to claim 2 , characterized in that the shape of the clamping block ( 2 ) is a triangle, a table shape, a circle or a zigzag shape; and the number of the blocks is one or more. 7 . .

7 . The anti-loosening structure of a thread according to claim 3 , characterized in that the shape of the positioning block ( 4 ) matches the shape of the clamping block ( 2 ). 8 .

8. A thread anti-loosening structure according to claim 3, characterized in that the height of the clamping block (2) is smaller than the tooth thickness of the female thread segment (1), and the height of the positioning block (4) is smaller than the Tooth thickness of the thread segment (3).