A screw with bidirectional reverse claw

Abstract

The utility model discloses a screw with two -way inverted claw, including screw body and two -way inverted piece, two -way inverted piece is equipped on screw body through riveting pressure cover, screw body tail portion is equipped with the post position, and the periphery of post position surrounds the thread, two -way inverted piece is annular structure, and the periphery is equipped with a plurality of outer clamping sites, and the inner ring is equipped with a plurality of inner clamping sites with post position cooperation, screw body with two -way inverted piece becomes the combination spare of T -shaped structure after riveting pressure, and inner clamping site has resilience, when post position passes through the hole of inner clamping site, extrudes inner clamping site deformation, and inner clamping site clamps tightly post position after riveting pressure, outer clamping site is continuous triangle sawtooth, and when fastening, is closely contacted with the surrounding component, post position diameter is greater than the diameter of the incircle formed by the apex of three inner clamping sites, and is greater than the diameter of the thread. The screw with two -way inverted claw of the utility model has good anti -loose effect and high production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, specifically referring to a screw with bidirectional barbs. Background Technology

[0002] Screws are core fastening components in fields such as machinery manufacturing and construction installation, achieving stable connections between parts through the self-locking property of their threads. With industrial development, various equipment demands higher fastening precision and resistance to loosening, making the structural limitations of traditional screws increasingly apparent.

[0003] Ordinary screws rely on thread friction to prevent loosening. In static environments, ordinary screws can meet the user's needs for preventing loosening. However, in high-frequency vibration and drastic temperature changes, such as in automobile engine compartments and rail transportation, screws are prone to loosening. This can not only cause abnormal noises in equipment and reduce assembly accuracy, but may also cause parts to fall off, leading to safety accidents and economic losses.

[0004] Existing anti-loosening solutions for screws each have their shortcomings: anti-loosening washers and double nuts require additional components, are costly, and are prone to failure; thread-locking adhesives are difficult to remove and cannot be reused.

[0005] In precision fields such as aerospace and medical equipment, screws need to be both reliable and resistant to loosening, and easy to assemble; existing products cannot meet both requirements.

[0006] Therefore, there is an urgent need for a screw structure with a reasonable structural design, reliable anti-loosening effect, adaptability to automated production, and high production efficiency to solve the shortcomings of existing technologies. Utility Model Content

[0007] In order to overcome the problems of the existing technology, this utility model designs a screw with bidirectional barbs, which can achieve multiple goals such as improving the reliability of screw anti-loosening, adapting to automated production, and improving production efficiency.

[0008] To solve the above technical problems, the present invention adopts the following technical solution: a screw with bidirectional barbs, comprising a screw body and a bidirectional barb, wherein the bidirectional barb is fitted onto the screw body by riveting, the tail of the screw body is provided with a post, the periphery of the post is surrounded by threads, the bidirectional barb is an annular structure with bidirectional barbs on both the inner and outer sides, the periphery is provided with a number of outer locking positions, and the inner ring is provided with a number of inner locking positions that cooperate with the post.

[0009] Furthermore, the screw body and the bidirectional buckle are independently machined parts. When the bidirectional buckle is riveted onto the screw body to prevent loosening, the assembly of the screw body and the bidirectional buckle forms a T-shaped structure.

[0010] Furthermore, the three inner locking positions of the inner ring of the bidirectional reverse fastener are evenly distributed along the circumferential direction of the bidirectional reverse fastener.

[0011] Furthermore, the outer locking positions are evenly distributed along the circumference of the bidirectional buckle, forming continuous triangular serrations, and both the outer locking positions and the inner locking positions are inclined to the same side.

[0012] Furthermore, the diameters of the post, the inner locking position, and the thread are related as follows: the diameter of the post is greater than the diameter of the inscribed circle formed by connecting the vertices of the three inner locking positions, which is greater than the diameter of the thread.

[0013] The beneficial effects of this utility model of a screw with bidirectional barbs are as follows: The screw body and the bidirectional barb are independently processed parts, which form a stable T-shaped structure after riveting and assembly, which can avoid the lateral swaying of the barb and significantly reduce the probability of equipment jamming, ensuring production continuity; The three inner clamping positions of the inner ring of the bidirectional barb are evenly distributed along the circumference. When the post passes through, it squeezes the inner clamping position, causing the inner clamping position to deform. After riveting, the inner clamping position is tightly attached to the post; The outer clamping position of the bidirectional barb is a continuous triangular sawtooth. The outer clamping position and the inner clamping position are both inclined to the same side. When the outer clamping position is tightened, it can make close contact with the surrounding parts. The cooperation between the outer clamping position and the inner clamping position achieves reliable anti-loosening; The scientific size ratio allows the screw head and middle to pass through the barb without obstruction. Only the post is squeezed, which takes into account both assembly convenience and fixing firmness. Moreover, the riveting process simplifies the production process and helps to improve production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a screw with bidirectional barbs according to the present invention.

[0015] Among them, 1-screw body, 2-two-way reverse fastener, 3-post, 4-inner locking position, 5-outer locking position, 6-thread. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figure 1As shown, this utility model is a screw with bidirectional barbs. The screw with bidirectional barbs includes a screw body 1 and a bidirectional barb 2. The bidirectional barb 2 is fitted onto the screw body 1 by riveting. The tail of the screw body 1 is provided with a post 3. The periphery of the post 3 is surrounded by threads 6. The bidirectional barb 2 is an annular structure with bidirectional barbs on both the inner and outer sides. The outer periphery is provided with a plurality of outer locking positions 5, and the inner ring is provided with a plurality of inner locking positions 4 that cooperate with the post 3.

[0018] Furthermore, the screw body 1 and the bidirectional buckle 2 are independently processed parts. When the bidirectional buckle 2 is riveted onto the screw body 1 to prevent loosening, the assembly of the screw body 1 and the bidirectional buckle 2 forms a T-shaped structure. The T-shaped structure avoids frequent jamming of the assembly of the screw body 1 and the bidirectional buckle 2 on automated production equipment due to the buckle swaying left and right.

[0019] Furthermore, the three inner locking positions 4 of the inner ring of the bidirectional buckle 2 are evenly distributed along the circumference of the bidirectional buckle 2, and have rebound properties.

[0020] Furthermore, the outer locking position 5 is evenly distributed along the circumference of the bidirectional buckle 2, and is a continuous triangular sawtooth pattern. The outer locking position 5 and the inner locking position 4 are both inclined to the same side.

[0021] Furthermore, the diameters of the post 3, the inner locking position 4, and the thread 6 are related as follows: the diameter of the post 3 is greater than the diameter of the inscribed circle formed by connecting the vertices of the three inner locking positions 4, which is greater than the diameter of the thread 6.

[0022] Furthermore, when the screw body 1 passes through the hole of the inner locking position 4, the head and middle of the screw body 1 pass through the bidirectional buckling member 2 without obstruction. When the post 3 at the tail of the screw body 1 passes through the hole of the inner locking position 4, it squeezes the inner locking position 4 of the inner ring of the bidirectional buckling member 2, causing the inner locking position 4 to deform in the direction of movement of the screw body 1. When the bidirectional buckling member 2 is riveted to the screw body 1, the inner locking position 4 and the outer locking position 5 deform. The inner locking position 4 is riveted to the post 3 at the bottom of the screw, which can lock the screw body 1 and prevent it from loosening, thus preventing the screw body 1 from loosening after tightening. The outer locking position 5 is in close contact with the surrounding components, which plays a role in positioning and preventing loosening.

[0023] Furthermore, the manufacturing process of the screw body 1 is simple. Both the screw body 1 and the bidirectional buckle 2 are produced by riveting, which greatly accelerates the production efficiency of the assembly.

[0024] The beneficial effects of this utility model of a screw with bidirectional barbs are as follows: The screw body and the bidirectional barb are independently processed parts, which form a stable T-shaped structure after riveting and assembly, which can avoid the lateral swaying of the barb and significantly reduce the probability of equipment jamming, ensuring production continuity; The three inner clamping positions of the inner ring of the bidirectional barb are evenly distributed along the circumference. When the post passes through, it squeezes the inner clamping position, causing the inner clamping position to deform. After riveting, the inner clamping position is tightly attached to the post; The outer clamping position of the bidirectional barb is a continuous triangular sawtooth. The outer clamping position and the inner clamping position are both inclined to the same side. When the outer clamping position is tightened, it can make close contact with the surrounding parts. The cooperation between the outer clamping position and the inner clamping position achieves reliable anti-loosening; The scientific size ratio allows the screw head and middle to pass through the barb without obstruction. Only the post is squeezed, which takes into account both assembly convenience and fixing firmness. Moreover, the riveting process simplifies the production process and helps to improve production efficiency.

[0025] The present invention and its embodiments have been described above. This description is not restrictive. The accompanying drawings are only one embodiment of the present invention. The actual content is not limited thereto. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A screw with bidirectional barbs, characterized in that, Includes a screw body (1) and a bidirectional buckle (2). The bidirectional buckle (2) is fitted onto the screw body (1) by riveting. The screw body (1) has a post (3) at its tail. The post (3) is surrounded by threads (6). The bidirectional buckle (2) is an annular structure with bidirectional buckles on both the inner and outer sides. The bidirectional buckle (2) has several outer locking positions (5) on its outer periphery and several inner locking positions (4) that cooperate with the post (3) on its inner ring.

2. A screw with bidirectional barbs according to claim 1, characterized in that, The screw body (1) and the bidirectional buckle (2) are independently processed parts. When the bidirectional buckle (2) is riveted onto the screw body (1) to prevent loosening, the combination of the screw body (1) and the bidirectional buckle (2) forms a T-shaped structure.

3. A screw with bidirectional barbs according to claim 1, characterized in that, The three inner locking positions (4) of the inner ring of the bidirectional buckle (2) are evenly distributed along the circumference of the bidirectional buckle (2).

4. A screw with bidirectional barbs according to claim 1, characterized in that, The outer locking position (5) is evenly distributed along the circumference of the bidirectional buckle (2) and is a continuous triangular sawtooth. The outer locking position (5) and the inner locking position (4) are both inclined to the same side.

5. A screw with bidirectional barbs according to claim 1, characterized in that, The diameters of the column (3), the inner locking position (4), and the thread (6) are related as follows: the diameter of the column (3) is greater than the diameter of the inscribed circle formed by connecting the vertices of the three inner locking positions (4) and the diameter of the thread (6).

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