Quincunx-shaped anti-loosening and anti-theft nut

Abstract

The utility model relates to the technical field of nuts, in particular to a quincunx anti-loosening and anti-theft nut. Comprising a nut body, a wedge-shaped inclined face is arranged at the tooth bottom of an internal thread of the nut body, the included angle between the wedge-shaped inclined face and the axis of the internal thread is 30 degrees, and a plurality of protrusions are evenly arranged on the outer side face of the nut body and arranged in a quincunx shape. Compared with the prior art, the anti-theft nut is simple in structure, the problem that a fastener is prone to loosening is effectively solved, a common wrench cannot be mounted and dismounted, even if a special wrench is used, the nut body can only be tightened and cannot be dismounted, and a good anti-theft effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically a plum blossom-shaped anti-loosening and anti-theft nut. Background Technology

[0002] With rapid economic development and product upgrades, the requirements for fasteners in various industries are becoming increasingly stringent, and their quality stability and reliability are becoming more and more important.

[0003] In the use of nuts, anti-loosening and anti-theft performance have always been key concerns in the nut industry. Loosening or loss of fasteners can pose significant safety hazards. Existing star-shaped nuts are no longer sufficient to meet practical needs, making the development of a star-shaped anti-loosening and anti-theft nut essential. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this utility model provides a plum blossom-shaped anti-loosening and anti-theft nut, which can be used in all threaded connection and fastening fields related to power, highways, ports, ships, automobiles, etc.

[0005] To achieve the above objectives, a plum blossom-shaped anti-loosening and anti-theft nut is designed, including a nut body. The nut body has a wedge-shaped inclined surface at the root of the internal thread, and the angle between the wedge-shaped inclined surface and the axis of the internal thread is 30 degrees. The outer surface of the nut body is evenly provided with several protrusions, which are arranged in a plum blossom shape.

[0006] The number of protrusions is 5.

[0007] The protrusion includes a first inclined surface, a second inclined surface, and a bent surface, which are connected in sequence to form the protrusion.

[0008] The inclination angle of the first inclined plane is greater than that of the second inclined plane.

[0009] The nut body is tapered in the height direction, and the diameter of the supporting surface is larger than the diameter of the non-supporting surface.

[0010] The nut body has a tapered angle of 10-45°.

[0011] The non-supported surface of the nut body is provided with one of the following: pressure point, spring washer, or nylon ring.

[0012] Compared with the prior art, this utility model has a simple structure, effectively solves the problem of fasteners being easy to loosen, and ordinary wrenches cannot be used for installation and disassembly. Even when using a special wrench, the nut body can only be tightened and cannot be disassembled, thus playing a good anti-theft role. Attached Figure Description

[0013] Figure 1This is the front view of the present invention.

[0014] Figure 2 This is a top view of the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figures 1 to 2 As shown, a wedge-shaped inclined surface 2 is provided at the bottom of the internal thread 3 of the nut body 1. The included angle between the wedge-shaped inclined surface 2 and the axis of the internal thread 3 is 30 degrees. Several protrusions 4 are evenly provided on the outer side of the nut body 1, and the protrusions 4 are arranged in a plum blossom shape.

[0017] There are five protrusions 4. Each protrusion 4 includes a first inclined surface 41, a second inclined surface 42, and a bent surface 43, which are connected sequentially to form the protrusion. The inclination angle of the first inclined surface 41 is greater than that of the second inclined surface 42. This ensures that the nut body 1 can be tightened in one direction only, and cannot be tightened in the other direction.

[0018] The nut body 1 is tapered in the height direction, with the diameter of the supporting surface being larger than the diameter of the non-supporting surface. The tapered angle of the nut body 1 is 10-45°. In actual use, the forward tightening angle is large, allowing for a tight tightening. However, due to the difference in diameter (one side is larger than the other), and the interaction of the first inclined surface 41 and the second inclined surface 42, the wrench will slip when tightening in the reverse direction, preventing the nut from being turned, thus ensuring anti-theft performance.

[0019] In practical use, one of the following can be set on the non-supporting surface of the nut body 1: pressure point, spring washer, or nylon ring, to enhance the anti-loosening and anti-disengagement effect of the nut.

[0020] When this utility model is used, because there is a wedge-shaped inclined surface 2 at the root of the internal thread of the nut body 1, when the bolt and nut are tightened together, the tip of the bolt's thread tightly presses against the wedge-shaped inclined surface 2 of the internal thread, thereby generating a large locking force and effectively solving the problem of fasteners being easy to loosen. The nut body 1 has a five-petal plum blossom shape, changing the traditional hexagonal or octagonal shape of nuts. Because of the five-petal plum blossom shape and the tapered shape in the height direction of the nut body 1, ordinary wrenches cannot be used for installation and disassembly. Even when using a special wrench, the nut body 1 can only be tightened, not disassembled, which plays a good role in preventing theft.

Claims

1. A plum blossom-shaped anti-loosening and anti-theft nut, comprising a nut body, characterized in that: The nut body (1) has a wedge-shaped inclined surface (2) at the bottom of the internal thread. The angle between the wedge-shaped inclined surface (2) and the internal thread axis is 30 degrees. The outer side of the nut body (1) is uniformly provided with several protrusions (4), which are arranged in a plum blossom shape.

2. The plum blossom-shaped anti-loosening and anti-theft nut according to claim 1, characterized in that: The number of protrusions (4) is 5.

3. The plum blossom-shaped anti-loosening and anti-theft nut according to claim 2, characterized in that: The protrusion (4) includes a first inclined surface (41), a second inclined surface (42), and a bent surface (43), which are connected in sequence to form the protrusion (4).

4. A plum blossom-shaped anti-loosening and anti-theft nut according to claim 3, characterized in that: The inclination angle of the first inclined plane (41) is greater than that of the second inclined plane (42).

5. A plum blossom-shaped anti-loosening and anti-theft nut according to claim 1, characterized in that: The nut body (1) is tapered in the height direction, and the diameter of the supporting surface is larger than the diameter of the non-supporting surface.

6. A plum blossom-shaped anti-loosening and anti-theft nut according to claim 5, characterized in that: The nut body (1) has a tapered angle of 10-45°.

7. A plum blossom-shaped anti-loosening and anti-theft nut according to claim 1, characterized in that: The non-supporting surface of the nut body (1) is provided with one of the following: pressure point, spring washer, or nylon ring.

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