阅读说明：本技术 一种螺纹防松动结构 (Anti-loosening structure for threads ) 是由 丁欣欣 王文广 周东珊 李冰清 余广 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种螺纹防松动结构,属于紧固件领域,包括第一连接件和第二连接件,第一连接件上设有母螺纹段,第二连接件上设有子螺纹段,第一连接件和所述第二连接件通过所述母螺纹段和所述子螺纹段螺纹连接；其中,母螺纹段上形成有第一防松动结构,子螺纹段上形成有第二防松动结构,当所述母螺纹段与所述子螺纹段螺纹连接时,第一防松动结构与所述第二防松动结构彼此卡合连接,从而防止所述母螺纹段与所述子螺纹段之间的松动,采用本发明的技术方案,通过子螺纹段的牙型开始地方的第二防松动结构和母螺纹段最后一节螺距中间的第一防松动结构相结合起到固定防松动效果。(The invention discloses a thread anti-loosening structure, which belongs to the field of fasteners and 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 device 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 in clamping connection with each other, so that loosening between the female thread section and the male thread section is prevented.)

1. A thread anti-loosening structure is characterized by comprising 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 anti-loosening device comprises a female thread section (1), a male thread section (3) and a female thread section (1), 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.

2. A thread anti-loosening structure according to claim 1, wherein the first anti-loosening structure comprises a clamping block (2) formed on the thread pitch of the female thread section, the second anti-loosening structure comprises a clamping groove (5) formed on the thread form initial position of the male thread section, and when the female thread section (1) is in threaded connection with the female thread section (3), the clamping block (2) can be clamped into the clamping groove (5).

3. The thread anti-loosening structure according to claim 2, wherein a positioning block (4) is disposed on the sub-thread section (3), the positioning block (4) is disposed near a thread initial position of the sub-thread section (3) and has a predetermined gap with the thread initial position of the sub-thread section (3), the positioning block (4), the thread initial position of the sub-thread section (3) and the predetermined gap together form the locking slot (5), and the positioning block (4) is used for limiting the position of the locking slot (5).

4. A thread anti-loosening structure according to claim 2, wherein the locking block (2) is located at the middle of the thread pitch of the female thread section (1).

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

6. A thread anti-loosening structure according to claim 2, wherein the fixture block (2) is triangular, truncated, circular or serrated in shape; and the number thereof is 1 or more.

7. A thread locking structure according to claim 3, wherein the shape of the positioning block (4) matches the shape of the fixture block (2).

8. The thread anti-loosening structure according to claim 3, wherein the height of the fixture 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).

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.