Flower tooth type anti-loosening screw

Abstract

The utility model provides a flower tooth type anti-loosening screw, which is characterized in that a flower-shaped anti-loosening ring is arranged at the lower end of a cap part of a traditional screw, and the anti-loosening ring is provided with a plurality of inclined latches. When the anti-loosening ring is installed in a connecting hole, the clamping teeth on the anti-loosening ring can tightly clamp the inner wall of the connecting hole, and the rotation resistance of the anti-loosening ring is increased. The screw is simple in structure, stable in fastening effect, capable of effectively preventing the screw from being separated from the connecting hole, and particularly suitable for occasions where vibration exists in the installation position.

Description

Technical Field

[0001] The utility model relates to a threaded connector, in particular to a toothed anti-loosening screw. Background Art

[0002] Screws are common connecting components in everyday life, consisting of a shank and a nut. They can secure two components together through a threaded connection. They are essential components for connection, fixing, support, force and torque transmission, sealing, adjustment and positioning, and decorative protection. The degree of tightening of screw connections directly affects the operational stability of the product. Screws can cause workpiece fatigue over long periods of use, resulting in a decrease in connection strength. This is especially true in applications with vibration, such as washing machines and vibrating plates. Traditional screws can loosen during the constant vibration process, resulting in a decrease in connection capacity. Therefore, it is necessary to improve the screw structure in the prior art to increase the screw's ability to tighten the device. Utility Model Content

[0003] To solve the above technical problems, the present invention provides a toothed anti-loosening screw, comprising a shaft and a cap provided at one end of the shaft, wherein the outer circumference of the shaft is provided with a threaded portion that engages with an external connection hole; the screw is characterized in that:

[0004] The transition section has an inclined transition surface, and both ends of the transition section are transitionally connected to the cap and the rod body respectively; an anti-loosening ring is coaxially provided on the outer circumference of the transition section, and a plurality of locking teeth are extended outward from the upper end of the anti-loosening ring.

[0005] Furthermore, the anti-loosening ring is integrally formed with the shaft.

[0006] Furthermore, the top end of the latching tooth is lower than the height of the upper edge of the transition section.

[0007] Furthermore, the outer surface of each latch tooth is in a spiral shape extending along the rotation direction, and the spiral direction is the same as the thread direction of the threaded portion.

[0008] Furthermore, the inclination angle of the latching teeth is greater than the inclination angle of the transition section, and the radial distance between the latching teeth increases gradually from bottom to top, forming a gradually increasing gap area between the latching teeth and the outer peripheral surface of the transition section.

[0009] Furthermore, a plurality of ribs are provided on the outer surface of the transition section, and the ribs extend axially from the upper end of the transition section along the circumference of the transition section.

[0010] Furthermore, the convex ribs and the latching teeth are arranged at intervals, and the convex ribs and the latching teeth are evenly arranged along the outer circumference of the transition section.

[0011] Furthermore, a cross notch and a straight notch are formed on the top of the cap portion, and the centers of the straight notch and the cross notch are located on the same axis.

[0012] This utility model provides a flower-toothed anti-loosening screw. A flower-shaped anti-loosening ring with multiple inclined teeth is attached to the lower end of the cap of a conventional screw. When the utility model is installed in a connecting hole, the teeth on the anti-loosening ring firmly engage the inner wall of the connecting hole, increasing the resistance to the anti-loosening ring's rotation. This utility model has a simple structure, a stable tightening effect, and can effectively prevent the screw from disengaging from the connecting hole. It is particularly suitable for installation locations subject to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model toothed anti-loosening screw;

[0014] Figure 2 This is an exploded schematic diagram of the utility model's toothed anti-loosening screw;

[0015] Figure 3 It is a top view of the toothed anti-loosening screw.

[0016] Reference numerals: shaft 1 , cap 2 , threaded portion 3 , transition section 4 , anti-loosening ring 5 , latching teeth 6 , gap area 7 , rib 8 , cross notch 9 , straight notch 10 . DETAILED DESCRIPTION

[0017] like Figure 1 and Figure 2 The flower-toothed anti-loosening screw shown includes a shaft 1 and a cap 2 provided at one end of the shaft 1. The outer circumference of the shaft 1 is provided with a threaded portion 3 that interfaces with an external connection hole. The diameter of the cap 2 is larger than that of the shaft 1. A transition section 4 is provided between the cap 2 and the shaft 1. The transition section 4 has an inclined transition surface, and the two ends of the transition section 4 are transitionally connected to the cap 2 and the shaft 1, respectively. An anti-loosening ring 5 is coaxially provided on the outer circumference of the transition section 4. The anti-loosening ring 5 has an overall disc-shaped structure that is wide at the top and narrow at the bottom. The anti-loosening ring 5 is arranged around the bottom of the transition section 4. A plurality of latch teeth 6 extend outward from the upper end of the anti-loosening ring 5. The plurality of latch teeth 6 are arranged in a flower-shaped pattern around the outer circumference of the transition surface. The anti-loosening ring 5 is integrally formed with the shaft 1, and the portion of the anti-loosening ring 5 near the threaded portion 3 is formed by thread rolling.

[0018] The anti-loosening screw provided in this embodiment is mainly used to solve the application of screws in vibration scenarios. The connection hole used is generally a countersunk hole. The rod body 1 with the threaded portion 3 is inserted into the inner hole of the countersunk hole. The cap portion 2 is rotated to drive the rod body 1 to move downward in a spiral. When the transition section 4 enters the outer hole, the latch 6 on the anti-loosening ring 5 will conflict with the hole wall of the outer hole and be tightly connected to the inner side of the countersunk hole. The hole wall of the countersunk hole will be stuck between adjacent latches 6 to prevent the screw from shaking in the countersunk hole. The top height of the latch 6 is lower than the height of the upper edge of the transition section 4. When the screw is fully tightened, the cap portion 2 enters the countersunk hole, and the upper edge of the latch 6 will fully contact the hole wall of the countersunk hole to ensure the connection ability of the latch 6 and the countersunk hole.

[0019] Furthermore, the outer surface of each latch tooth 6 is spirally shaped extending along the direction of rotation, and the spiral direction is the same as the thread direction of the threaded portion 3. When the screw is tightened along the threaded direction, the surface of the spiral latch tooth 6 will apply a gradually increasing tightening force to the inner surface of the countersunk hole until the latch tooth 6 is completely engaged in the countersunk hole.

[0020] Furthermore, the inclination angle of the latching teeth 6 is greater than that of the transition section 4. The radial distance between the latching teeth 6 and the outer circumference of the transition section 4 gradually increases from bottom to top, forming a gradually increasing gap area 7 between the latching teeth 6 and the outer circumference of the transition section 4. The gap area 7 provides a certain amount of deformation space for the latching teeth 6. As the screw moves downward, the position of the latching teeth 6 gradually tightens, applying an increasingly greater compressive force to the countersunk hole.

[0021] Furthermore, a plurality of ribs 8 are formed on the outer surface of the transition section 4, extending axially from the upper end of the transition section 4 along the circumference of the transition section 4. The ribs 8 cooperate with the latches 6 to position the screw within the countersunk hole. When the screw is tightened, the ribs 8 contact the hole wall between the latches 6, increasing the resistance to the screw's rotation and thereby strengthening the connection between the screw and the countersunk hole.

[0022] Furthermore, the ribs 8 and the teeth 6 are arranged at intervals and are evenly arranged along the outer circumference of the transition section 4. The number of ribs 8 and teeth 6 is set between 10 and 14 groups, so that each group of ribs 8 and teeth 6 can provide a relatively uniform circumferential pressing force.

[0023] Furthermore, if Figure 3 As shown, the top of the cap 2 is provided with a cross slot 9 and a slotted slot 10. The slotted slot 10 and the cross slot 9 are coaxially centered, and the slotted slot 10 extends from one edge of the cross slot 9. The two slot types accommodate different types of screwdrivers. By inserting a cross or slotted screwdriver into the slot at the top of the cap 2, the screw can be turned accurately into place.

[0024] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A toothed anti-loosening screw comprising a shaft (1) and a cap (2) provided at one end of the shaft (1), wherein the outer circumference of the shaft (1) is provided with a threaded portion (3) for docking with an external connection hole; characterized in that: A transition section (4) is provided between the cap portion (2) and the shaft (1), the transition section (4) having an inclined transition surface, and the two ends of the transition section (4) are transitionally connected to the cap portion (2) and the shaft (1) respectively; an anti-loosening ring (5) is coaxially provided on the outer circumference of the transition section (4), and a plurality of latching teeth (6) are extended outward from the upper end of the anti-loosening ring (5).

2. The toothed anti-loosening screw according to claim 1, characterized in that: The anti-loosening ring (5) and the shaft (1) are integrally formed.

3. The toothed anti-loosening screw according to claim 1, characterized in that: The top end of the latching tooth (6) is lower than the height of the upper edge of the transition section (4).

4. The toothed anti-loosening screw according to claim 1, wherein: The outer surface of each latching tooth (6) is in a spiral shape extending along the rotation direction, and the spiral direction is the same as the thread direction of the threaded portion (3).

5. The toothed anti-loosening screw according to claim 1, characterized in that: The inclination angle of the latching teeth (6) is greater than the inclination angle of the transition section (4), and the radial distance of the latching teeth (6) gradually increases from bottom to top, forming a gradually increasing gap area (7) between the latching teeth (6) and the outer peripheral surface of the transition section (4).

6. The toothed anti-loosening screw according to claim 1, wherein: A plurality of convex ribs (8) are provided on the outer surface of the transition section (4), and the convex ribs (8) extend axially from the upper end of the transition section (4) along the circumference of the transition section (4).

7. The toothed anti-loosening screw according to claim 6, characterized in that: The convex ribs (8) and the latch teeth (6) are arranged at intervals, and the convex ribs (8) and the latch teeth (6) are evenly arranged along the outer peripheral surface of the transition section (4).

8. The toothed anti-loosening screw according to claim 1, characterized in that: A cross notch (9) and a straight notch (10) are provided at the top end of the cap portion (2), and the centers of the straight notch (10) and the cross notch (9) are located on the same axis.

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