Anti-falling bolt

Abstract

The utility model discloses an anti-falling bolt which comprises a rotating part and a stud part, a closed annular cutting groove close to the stud part is formed in the side face of the rotating part, the rotating part is divided into a rotating body far away from the stud part and a spacer body close to the stud part through the cutting groove, and a plurality of punched holes extending in the radial direction are distributed in the periphery of the spacer body. One end face of each punched hole extends towards the axis of the spacer body, the other end of each punched hole is connected with the outside, an anti-disengaging elastic piece integrated with the spacer body is formed between every two adjacent punched holes, and the anti-disengaging elastic pieces are bent and twisted to protrude out of the end face, opposite to the rotating body, of the spacer body. The bolt has the characteristics of integrated design and falling prevention, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and more specifically, it relates to an anti-loosening bolt. Background Art

[0002] Bolts are often used for connecting and fastening components. If the usage scenario is to remain static for a long time, the bolt is not likely to become loose; if the usage scenario is to remain vibrating for a long time, the bolt is likely to become loose, resulting in an increase in amplitude or component separation, posing a safety hazard and having an unsatisfactory overall effect. Accordingly, the utility model proposes an anti-loosening bolt. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide an anti-loosening bolt with an integrated design and the feature of preventing loosening.

[0004] To solve the above technical problems, the purpose of the utility model is achieved as follows: An anti-loosening bolt according to the utility model includes a rotating part and a stud part. A cutting groove that is close to the stud part and in a closed ring shape is formed on the side surface of the rotating part. The cutting groove divides the rotating part into a rotating main body away from the stud part and a spacer main body close to the stud part. A number of punching holes extending radially are distributed around the spacer main body. One end of each punching hole extends towards the axis of the spacer main body, and the other end is connected to the outside. An anti-loosening elastic piece that is integrated with the spacer main body is formed between adjacent punching holes. The anti-loosening elastic piece is bent and twisted to protrude from the end surface of the spacer main body facing away from the rotating main body.

[0005] The utility model is further provided as: One end of the punching hole facing the axis of the spacer main body has a stress relief hole.

[0006] The utility model is further provided as: One end of the punching hole facing away from the axis of the spacer main body has a chamfer.

[0007] The utility model is further provided as: The included angles between adjacent punching holes are equal.

[0008] The utility model is further provided as: The number of punching holes is six, eight or twelve.

[0009] In summary, the utility model has the following beneficial effects:

[0010] 1. When the anti-loosening elastic piece that is bent and twisted to protrude from the end surface of the spacer main body is pressed, the elastic force generated by its deformation can resist the gap between the stud part and the connecting component, so that it is not likely to become loose even under high-frequency vibration.

[0011] 2. The whole is integrally processed without secondary assembly, and the installation is convenient and fast. Brief Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the present utility model;

[0013] Figure 2 is the structural schematic diagram of another perspective of the present utility model. Detailed implementation manners

[0014] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation manners of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0015] The present utility model will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0016] Embodiment 1

[0017] Referring to Figure 1 and Figure 2 As shown, a kind of anti-loosening bolt involved in this embodiment includes a rotating part 100 and a stud part 200. A cutting groove 1 which is close to the stud part and in a closed ring shape is arranged on the side surface of the rotating part 100. The cutting groove 1 divides the rotating part into a rotating main body 2 away from the stud part and a spacer main body 3 close to the stud part. Six punching holes 4 which are adjacent and equally spaced in angle and extend radially are arranged on the spacer main body 3 in a circumferential distribution. One end of the punching hole 4 extends towards the axis of the spacer main body, and the other end is connected to the outside. An anti-loosening elastic sheet 5 which is integral with the spacer main body is formed between two adjacent punching holes 4. The anti-loosening elastic sheet 5 is bent and twisted to protrude from the end surface of the spacer main body 3 facing away from the rotating main body 2.

[0018] In this implementation manner, because the twisted anti-loosening elastic sheet 5 protrudes from the end surface of the spacer main body 3 facing away from the rotating main body 2, when the bolt is tightened, the twisted anti-loosening elastic sheet 5 is close to the connected part and deforms due to extrusion. The elastic force generated by its deformation tightens the stud part 200 on the connected part, so as to achieve the effects of shock absorption and anti-loosening.

[0019] Embodiment 2

[0020] Referring to Figure 1 and Figure 2 As shown, a kind of anti-loosening bolt involved in this embodiment is further set, on the basis of Embodiment 1, that one end of the punching hole 4 facing the axis of the spacer main body 3 has a stress relief hole 6.

[0021] Further, one end of the punching hole 4 facing away from the axis of the spacer body 3 has a chamfer 7.

[0022] In this embodiment, through the arrangement of the stress relief hole 6, when the anti-loosening elastic piece 5 is twisted, it is prevented from breaking due to stress concentration. Through the arrangement of the chamfer 7, the sharp corners are removed, and the use safety is improved.

[0023] Regarding the anti-loosening bolt involved in the present utility model, when the anti-loosening elastic piece on the bolt that is twisted to protrude from the end face of the spacer body is pressed, the elastic force generated by its deformation can resist the gap between the stud portion and the connecting component, so that it is not easy to loosen even under high-frequency vibration; and the whole is integrally processed without secondary assembly, the installation is convenient and fast, the overall function is perfect, and the practicability is strong.

[0024] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating the orientation or position relationship, it is based on the actual orientation or position relationship shown, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or position relationship in the present utility model are only used for exemplary illustration and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific situation.

[0025] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "arrangement", "connection" and "connection", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific situation.

[0026] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present application based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. An anti-drop bolt, comprising a rotating portion and a stud portion, characterized in that: A closed ring-shaped groove is provided on the side of the rotating part, which is close to the stud part. The groove divides the rotating part into a rotating main body away from the stud part and a spacer main body close to the stud part. A plurality of punching holes extending in the radial direction are arranged on the circumference of the spacer main body. One end of the punching hole extends toward the axis of the spacer main body, and the other end is connected to the outside world. An anti-slip elastic sheet integrated with the spacer main body is formed between two adjacent punching holes. The anti-slip elastic sheet is bent and twisted to protrude from the end face of the spacer main body facing away from the rotating main body.

2. The anti-drop bolt according to claim 1, characterized in that: One end of the punched hole facing the axis of the spacer body is provided with a stress relief hole.

3. The anti-drop bolt according to claim 2, characterized in that: One end of the punching hole facing away from the axis of the spacer body has a chamfer.

4. The anti-drop bolt according to any one of claims 1 to 3, characterized in that: The interval angles between two adjacent punching holes are equal.

5. The anti-drop bolt according to claim 4, characterized in that: The number of the punched holes is six, eight or twelve.

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