Bolt anti-loosening structure

Abstract

The utility model provides a bolt anti-loosing structure which comprises a first locked piece and a second locked piece arranged on one side of the first locked piece, the first locked piece and the second locked piece are connected through a locking bolt, the second locked piece is provided with an anti-loosing bolt, and the anti-loosing bolt is connected with the first locked piece. The bolt head of the locking bolt and the bolt head of the anti-loosening bolt are arranged on the same side of the second locked piece, and the bolt head of the anti-loosening bolt abuts against one side of the bolt head of the locking bolt. The distance between the center position of the bolt head of the locking bolt and the center position of the bolt head of the anti-loosening bolt is smaller than the sum of the radius of the circumcircle of the bolt head of the locking bolt and the radius of the circumcircle of the bolt head of the anti-loosening bolt. And meanwhile, the cost is low and maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt anti-loosening, and particularly relates to a bolt anti-loosening structure. Background Art

[0002] For some mechanical structures or components that need to be fixedly connected, bolts are used for connection, which is a relatively common connection method. However, in the actual connection process, the bolts are easily loosened under external force or vibration. Therefore, in order to prevent the bolts from loosening, in the prior art, corresponding improvements are usually made to the bolts, such as adding anti-loosening teeth to the bolts, adjusting the shape of the bolts, or changing the form of the threads. For the above improvements, they are all improvements made on the bolt body, which leads to increased costs and more complicated maintenance. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a bolt anti-loosening structure to solve the problems in the above background technology.

[0004] The utility model provides the following technical solution: a bolt anti-loosening structure, comprising a first locked member and a second locked member provided on one side of the first locked member, wherein the first locked member and the second locked member are connected by a locking bolt, and an anti-loosening bolt is provided on the second locked member, wherein the bolt head of the locking bolt and the bolt head of the anti-loosening bolt are provided on the same side of the second locked member, and the bolt head of the anti-loosening bolt abuts against one side of the bolt head of the locking bolt;

[0005] The distance between the center position of the bolt head of the locking bolt and the center position of the bolt head of the anti-loosening bolt is smaller than the sum of the circumscribed circle radius of the bolt head of the locking bolt and the circumscribed circle radius of the bolt head of the anti-loosening bolt.

[0006] Compared with the prior art, the beneficial effects of the present application are as follows: when the present application is used, the anti-loosening bolt is pressed against one side of the locking bolt, and when the locking bolt is affected by external force, the anti-loosening bolt can be tightly pressed against the locking bolt, and the locking bolt can also be pressed against the anti-loosening bolt in reverse. Through the cooperation between the anti-loosening bolt and the locking bolt, the locking bolt can be effectively prevented from loosening, thereby improving the connection stability, while having low cost and easy maintenance.

[0007] Preferably, the second locked member is provided with a plurality of annularly distributed limiting holes, and the limiting holes are distributed around the bolt head of the locking bolt.

[0008] Preferably, the anti-loosening bolt portion is arranged in the limiting hole.

[0009] Preferably, the anti-loosening bolt passes through the second locked member and the first locked member, and the first locked member and the second locked member are connected via the anti-loosening bolt.

[0010] Preferably, the radius of the circumscribed circle of the bolt head of the anti-loosening bolt is smaller than the radius of the circumscribed circle of the bolt head of the locking bolt.

[0011] Preferably, the locking bolt is a hexagonal bolt, and the anti-loosening bolt is a hexagonal bolt or a hexagonal bolt.

[0012] Preferably, the thickness of the bolt head of the locking bolt is greater than the thickness of the bolt head of the anti-loosening bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 A three-dimensional diagram of a bolt anti-loosening structure provided in an embodiment of the present utility model;

[0015] Figure 2 A plan view of a bolt anti-loosening structure provided in an embodiment of the present utility model.

[0016] Description of reference numerals:

[0017] First locked member 1 The second locked member 2 Locking bolt 3 Anti-loosening bolts 4 Limiting hole 5

[0018] The present invention will be further described below with reference to the accompanying drawings and accompanying descriptions. DETAILED DESCRIPTION

[0019] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0022] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0023] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, a bolt anti-loosening structure includes a first locked member 1 and a second locked member 2 provided on one side of the first locked member 1, the first locked member 1 and the second locked member 2 are connected by a locking bolt 3, and an anti-loosening bolt 4 is provided on the second locked member 2, the bolt head of the locking bolt 3 and the bolt head of the anti-loosening bolt 4 are provided on the same side of the second locked member 2, and the bolt head of the anti-loosening bolt 4 abuts against one side of the bolt head of the locking bolt 3;

[0024] Specifically, in this embodiment, the first locked member 1 and the second locked member 2 can be selected arbitrarily, such as a plate structure, a columnar structure, or other special-shaped structures. The connection between the first locked member 1 and the second locked member 2 is fixedly connected by a locking bolt 3, but under the action of external force, the locking bolt 3 is easily loosened. Therefore, in the present invention, an anti-loosening bolt 4 is provided on one side of the locking bolt 3, and the anti-loosening bolt 4 is tightly against one side of the locking bolt 3, and specifically, the bolt head of the anti-loosening bolt 4 is against one side of the bolt head of the locking bolt 3. At the same time, in order to ensure the stability of the abutment, the anti-loosening bolt 4 and the locking bolt 3 are on the same side to ensure that the bolt head of the anti-loosening bolt 4 and the bolt head of the locking bolt 3 can contact and abut, so as to realize the anti-loosening process in this application.

[0025] The distance between the center position of the bolt head of the locking bolt 3 and the center position of the bolt head of the anti-loosening bolt 4 is smaller than the sum of the circumscribed circle radius of the bolt head of the locking bolt 3 and the circumscribed circle radius of the bolt head of the anti-loosening bolt 4;

[0026] Specifically, in the present application, the distance between the center position of the bolt head of the locking bolt 3 and the center position of the bolt head of the anti-loosening bolt 4 is recorded as A, the circumscribed circle radius of the bolt head of the locking bolt 3 is recorded as B, and the circumscribed circle radius of the bolt head of the anti-loosening bolt 4 is recorded as C. The above-mentioned size relationship can be expressed as A<B+C. Through the above-mentioned setting, on the one hand, it can ensure that the anti-loosening bolt 4 can be installed smoothly, and on the other hand, it can ensure that the anti-loosening bolt 4 can be against one side of the locking bolt 3, thereby realizing the anti-loosening process of the present application.

[0027] In this embodiment, the second locked member 2 is provided with a plurality of annularly distributed limiting holes 5, and the limiting holes 5 are distributed around the bolt head of the locking bolt 3;

[0028] Specifically, in the present application, a number of limiting holes 5 are provided around the bolt head of the locking bolt 3. The limiting holes 5 cooperate with the anti-loosening bolt 4 to assist in the installation and anti-loosening of the anti-loosening bolt 4.

[0029] In this embodiment, the anti-loosening bolt 4 is partially disposed in the limiting hole 5;

[0030] Specifically, since the lock bolt 4 is installed in the limiting hole 5, in the actual installation process, the corresponding lock bolt 4 can be installed in different positions and different numbers of limiting holes 5. For example, when the lock bolt 4 is installed in one of the limiting holes 5, the abutting force may not be strong, so the lock bolt 4 can be installed in other limiting holes 5. In addition, if the first locked part 1 and the second locked part 2 require stronger locking force, several lock bolts 4 can be installed to improve the locking force of the present application, thereby further preventing the locking bolt 3 from loosening.

[0031] In the embodiment, the lock bolt 4 penetrates the first locked part 1 and the second locked part 2, and the first locked part 1 and the second locked part 2 are connected by the lock bolt 4.

[0032] Specifically, in actual situations, the first locked part 1 and the second locked part 2 are connected by the locking bolt 3, but if the first locked part 1 and the second locked part 2 require greater connection strength, the first locked part 1 and the second locked part 2 can be additionally fixed by the lock bolt 4, thereby further improving the stability of the first locked part 1 and the second locked part 2.

[0033] In the embodiment, the radius of the outer circle of the head of the lock bolt 4 is smaller than the radius of the outer circle of the head of the locking bolt 3.

[0034] Specifically, since the radius of the outer circle of the head of the lock bolt 4 is smaller than the radius of the outer circle of the head of the locking bolt 3, the size of the lock bolt 4 is smaller than the size of the locking bolt 3. Since the lock bolt 4 only serves to prevent loosening and abutting, it is not the main connecting element between the first locked part 1 and the second locked part 2. Therefore, in order to further reduce costs, the lock bolt 4 with a smaller size is selected, and the lock bolt 4 can also avoid affecting the installation of other components.

[0035] In the embodiment, the locking bolt 3 is a hexagonal bolt, and the lock bolt 4 is a hexagonal bolt or an internal hexagonal bolt.

[0036] Specifically, the locking bolt 3 is a hexagonal bolt, and the head thereof has six edges. The lock bolt 4 can be a hexagonal bolt or an internal hexagonal bolt, and the edge of the internal hexagonal bolt is in a cylindrical structure. Whether the lock bolt 4 has edges or not, it can still serve to prevent loosening. In the embodiment, the internal hexagonal bolt is preferred because the cylindrical structure of the external periphery can effectively reduce the wear between the locking bolt 3 and the lock bolt 4, and facilitate installation.

[0037] In this embodiment, the thickness of the bolt head of the locking bolt 3 is greater than the thickness of the bolt head of the anti-loosening bolt 4;

[0038] Specifically, since the thickness of the bolt head of the locking bolt 3 is greater than the thickness of the bolt head of the anti-loosening bolt 4, it is ensured that the bolt head of the anti-loosening bolt 4 will not protrude from the bolt head surface of the locking bolt 3, thereby avoiding the installation of other components and avoiding affecting the installation of other components.

[0039] In summary, the bolt anti-loosening structure in the above-mentioned embodiment of the utility model, when used in the present application, is abutted against one side of the locking bolt 3 by the anti-loosening bolt 4, and then when the locking bolt 3 is affected by external force, the anti-loosening bolt 4 can be tightly abutted against the locking bolt 3, and the locking bolt 3 can also abut against the anti-loosening bolt 4 in the reverse direction. Through the cooperation between the anti-loosening bolt 4 and the locking bolt 3, the locking bolt 4 can be effectively prevented from loosening, and the connection stability is improved, while the cost is low and maintenance is convenient.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bolt anti-loosening structure, characterized in that: The invention comprises a first locked member and a second locked member provided on one side of the first locked member, wherein the first locked member and the second locked member are connected by a locking bolt, and the second locked member is provided with an anti-loosening bolt, wherein the bolt head of the locking bolt and the bolt head of the anti-loosening bolt are provided on the same side of the second locked member, and the bolt head of the anti-loosening bolt abuts against one side of the bolt head of the locking bolt; The distance between the center position of the bolt head of the locking bolt and the center position of the bolt head of the anti-loosening bolt is smaller than the sum of the circumscribed circle radius of the bolt head of the locking bolt and the circumscribed circle radius of the bolt head of the anti-loosening bolt.

2. The bolt anti-loosening structure according to claim 1, characterized in that: The second locked member is provided with a plurality of annularly distributed limiting holes, and the limiting holes are distributed around the bolt head of the locking bolt.

3. The bolt anti-loosening structure according to claim 2, characterized in that: The anti-loosening bolt portion is arranged in the limiting hole.

4. The bolt anti-loosening structure according to claim 1, characterized in that: The anti-loosening bolt passes through the second locked member and the first locked member, and the first locked member and the second locked member are connected via the anti-loosening bolt.

5. The bolt anti-loosening structure according to claim 1, characterized in that: The radius of the circumscribed circle of the bolt head of the anti-loosening bolt is smaller than the radius of the circumscribed circle of the bolt head of the locking bolt.

6. The bolt anti-loosening structure according to claim 1, characterized in that: The locking bolt is specifically an external hexagonal bolt, and the anti-loosening bolt is an external hexagonal bolt or an internal hexagonal bolt.

7. The bolt anti-loosening structure according to claim 1, characterized in that: The thickness of the bolt head of the locking bolt is greater than the thickness of the bolt head of the anti-loosening bolt.

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