A stable anti-loosening car nut

Abstract

This utility model discloses a stable anti-loosening car nut, comprising a lower nut, a retaining ring at the upper center of the lower nut, an upper nut sleeved on the outer side of the retaining ring, a connecting groove matching the retaining ring at the lower end of the upper nut, a first inclined surface at the upper end of the retaining ring, a second inclined surface matching the first inclined surface at the upper end of the connecting groove, and multiple shear grooves arranged in a matrix at the upper end of the retaining ring. This nut has a simple structure, effectively resists the risk of loosening caused by high-frequency vibration, and its anti-loosening effect is significantly better than traditional anti-loosening nuts.

Description

Technical Field

[0001] This utility model relates to the field of automotive nut technology, and in particular to a stable, anti-loosening automotive nut. Background Technology

[0002] During vehicle operation, critical components such as the engine and chassis generate high-frequency vibrations, which can easily lead to loosening or detachment of traditional automotive nuts. Once a nut falls off, it can cause connection failures in components, affecting normal vehicle operation and even causing serious safety accidents. Existing anti-loosening nuts mostly use a single anti-loosening structure, such as adding spring washers or using self-locking nuts. However, spring washers are prone to fatigue failure under long-term vibration, gradually reducing their anti-loosening effect; self-locking nuts, on the other hand, suffer from inconvenient installation and high cost, and their anti-loosening stability under strong vibration conditions still needs improvement. Therefore, we propose a more stable anti-loosening automotive nut. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a stable anti-loosening automotive nut. This invention solves the problem that existing anti-loosening nuts often employ a single anti-loosening structure, such as adding spring washers or using self-locking nuts. However, spring washers are prone to fatigue failure under long-term vibration, gradually reducing their anti-loosening effect; self-locking nuts, on the other hand, suffer from inconvenient installation, high cost, and their anti-loosening stability under strong vibration conditions still needs improvement.

[0004] This utility model discloses a stable anti-loosening car nut, comprising a lower nut, a fixing ring at the middle of the upper end of the lower nut, an upper nut sleeved on the outside of the fixing ring, a connecting groove matching the fixing ring at the lower end of the upper nut, a first inclined surface at the upper end of the fixing ring, a second inclined surface matching the first inclined surface at the upper end of the connecting groove, and a plurality of shear grooves arranged in a matrix at the upper end of the fixing ring.

[0005] In the above scheme, there are no fewer than four shear grooves.

[0006] In the above scheme, the fixing ring is located below the shear groove and has an internal thread that matches the lower nut.

[0007] In the above scheme, the internal thread direction of the lower nut is opposite to that of the upper nut.

[0008] In the above scheme, the connecting groove is provided with a clearance groove above the second inclined surface.

[0009] In the above scheme, a washer is provided between the lower nut and the upper nut.

[0010] The advantages and beneficial effects of this utility model are as follows: This utility model provides a stable anti-loosening car nut. Through the design of the lower nut and upper nut with opposite thread directions, and the cooperation between the first inclined surface on the fixing ring and the second inclined surface inside the upper nut, plus the shear groove causing deformation of the fixing ring to enhance the fit, the multiple anti-loosening structures work synergistically to effectively resist the risk of loosening caused by high-frequency vibration. The anti-loosening effect is significantly better than traditional anti-loosening nuts. The whole adopts a split assembly structure, with each component fitting tightly. During installation, simply tighten the lower nut to the bolt first, then put the upper nut on the fixing ring and tighten it. The operation is convenient and requires no complicated tools or processes. This nut has a simple structure and can effectively resist the risk of loosening caused by high-frequency vibration, with an anti-loosening effect significantly better than traditional anti-loosening nuts. Attached Figure Description

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 This is a schematic diagram of part A of the present invention.

[0015] In the diagram: 1. Lower nut; 2. Retaining ring; 3. Upper nut; 4. Connecting groove; 5. First inclined surface; 6. Second inclined surface; 7. Clearance groove; 8. Shear groove; 9. Washer. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0017] like Figure 1-3As shown, this utility model is a stable anti-loosening car nut, including a lower nut 1. The lower nut 1 has a fixing ring 2 at its upper center, and an upper nut 3 is sleeved on the outside of the fixing ring 2. The lower end of the upper nut 3 has a connecting groove 4 that matches the fixing ring 2. The upper end of the fixing ring 2 has an upwardly inclined first slope 5, and the upper end of the connecting groove 4 has a second inclined surface 6 that matches the first inclined surface 5. The upper end of the fixing ring 2 has multiple matrix-arranged shear grooves 8. When the upper nut 3 is rotated, the first inclined surface 5 and the second inclined surface 6 come into contact, and the upper nut 3 compresses the fixing ring 2. Under the pressure of the upper nut 3, the fixing ring 2 deforms, and the inner wall of the fixing ring 2 fits tightly against the fastener. Thus, through the mutual cooperation between the fixing ring 2 and the fastener, the stability of the connection between the nut and the fastener is further increased.

[0018] There are no fewer than four shear grooves 8. Setting multiple shear grooves 8 can make the fixed ring 2 deform more evenly when it is squeezed by the upper nut 3, thereby increasing the tightness between the inner wall of the fixed ring 2 and the fastener.

[0019] The fixing ring 2 is located below the shear groove 8 and has an internal thread that matches the lower nut 1. The internal thread enables the lower nut 1 to be stably connected to the bolt, providing a basic fixing function for the entire nut structure.

[0020] The lower nut 1 and the upper nut 3 have opposite internal thread directions. When the car vibrates, the lower nut 1 and the upper nut 3 will be subjected to torque in opposite directions, thus restraining each other and effectively preventing the nuts from loosening, greatly improving the anti-loosening stability.

[0021] The connecting groove 4 is provided with a relief groove 7 above the second inclined surface 6. The relief groove 7 can provide a certain space for the fixing ring 2 during deformation, so as to avoid excessive compression between the fixing ring 2 and the upper nut 3, which would cause damage to the components. It also facilitates the installation and removal of the upper nut 3.

[0022] A washer 9 is provided between the lower nut 1 and the upper nut 3. The washer 9 can increase the friction between the lower nut 1 and the upper nut 3, further preventing the upper nut 3 from loosening. At the same time, it can also play a role in buffering and shock absorption, reducing the impact of vibration on the nut connection structure.

[0023] Specifically, in this utility model, firstly, the lower nut 1 is tightened to the automotive bolt through its internal thread to ensure a tight fit between the lower nut 1 and the connecting component; then, the washer 9 is placed on the outside of the fixing ring 2, above the lower nut 1; finally, the upper nut 3 is placed on the fixing ring 2 through the connecting groove 4, and the upper nut 3 is rotated clockwise or counterclockwise according to the thread direction to make the second inclined surface 6 and the first inclined surface 5 fit tightly together. As the upper nut 3 is tightened, the fixing ring 2 undergoes slight deformation under the action of the shear groove 8, further enhancing the fit between the first inclined surface 5 and the second inclined surface 6, thus completing the installation.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stable anti-loosening car nut, comprising a lower nut (1), characterized in that, The lower nut (1) has a fixing ring (2) at the middle of its upper end. The upper nut (3) is sleeved on the outside of the fixing ring (2). The lower end of the upper nut (3) has a connecting groove (4) that matches the fixing ring (2). The upper end of the fixing ring (2) has a first inclined surface (5) that is inclined upward. The upper end of the connecting groove (4) has a second inclined surface (6) that matches the first inclined surface (5). The upper end of the fixing ring (2) has multiple shear grooves (8) arranged in a matrix.

2. The stable anti-loosening car nut according to claim 1, characterized in that, The shear groove (8) shall be no less than four.

3. The stable anti-loosening car nut according to claim 1, characterized in that, The fixing ring (2) is located below the shear groove (8) and has an internal thread that matches the lower nut (1).

4. The stable anti-loosening car nut according to claim 1, characterized in that, The internal thread direction of the lower nut (1) is opposite to that of the upper nut (3).

5. The stable anti-loosening car nut according to claim 1, characterized in that, The connecting groove (4) is provided with a clearance groove (7) above the second inclined surface (6).

6. The stable anti-loosening car nut according to claim 1, characterized in that, A washer (9) is provided between the lower nut (1) and the upper nut (3).

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