Anti-loosening device for bolt

Abstract

The utility model discloses an anti-loosening device of a bolt, and relates to the technical field of bolt fixing. Comprising a connecting piece, a fixing bolt, a movable block and a guide plate, the fixing bolt penetrates through the connecting piece, a guide sliding rail is installed at the inner bottom of a hollow cavity, a fixing plate is installed at the right end of a connecting rod, a strong magnetic block is installed on the right side of the hollow cavity, and a fixing pin penetrates through the upper portion of the fixing bolt. And a threaded rod is mounted above the movable block. The anti-loosening device of the bolt is provided with the through hole, the fixed pin and the movable nut, according to the size of a connecting piece, the fixed pin can penetrate through the suitable through hole, then the connecting rod and the movable block are limited, and therefore the threaded rod on the movable block and the movable nut are limited, the movable nut is limited by the movable nut, and the anti-loosening effect of the bolt is improved. The movable nut cannot loosen, namely, the fixing bolt cannot loosen, and then the bottom end of the fixing pin can be attracted and fixed to the strong magnetic block, so that the fixing pin cannot fall off.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt fixing, in particular to a bolt anti-loosening device. Background Art

[0002] A fixing bolt is a type of fastener consisting of a hexagonal head and a flange (the gasket under the hexagon is fixed to the hexagon) and a screw (a cylinder with external threads). It needs to be matched with a nut to fasten two parts with through holes. Fixing bolts are also the most common fasteners in the mechanical field. In order to prevent the bolts from loosening when they are fixed, they are generally designed to prevent loosening.

[0003] For example, a bolt anti-loosening device with publication number CN209925407U includes a bolt rod, a nut, an anti-loosening cover and a cotter pin, controls the processing accuracy of the anti-loosening cover, reduces the matching clearance between the anti-loosening cover and the nut, has a reasonable anti-loosening structure, is light in weight, has good processability and is easy to manufacture. However, the device still has certain defects;

[0004] When the bolt is limited by the nut, the distance at which the cotter pin limits the nut cannot be adjusted, so it cannot be applied to connectors of different sizes. Different connectors need to be matched with different bolt mechanisms, which has great limitations.

[0005] Therefore, we propose a bolt anti-loosening device to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a bolt anti-loosening device to solve the problem raised by the above background technology that the existing bolt anti-loosening devices on the market cannot be adjusted when the bolt is limited by the nut, so it cannot be applied to connecting parts of different sizes, different connecting parts need to match different bolt mechanisms, and have great limitations.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bolt anti-loosening device, comprising a connecting piece, a fixing bolt, a movable block and a guide plate, the connecting piece is penetrated by a fixing bolt, and a hollow cavity is opened in the fixing bolt, and a movable groove is opened above the hollow cavity, a guide rail is installed at the inner bottom of the hollow cavity, and a movable block is installed on the guide rail, and a connecting rod is installed on the right side of the movable block, a fixing plate is installed at the right end of the connecting rod, and a guide plate is installed on the left side of the fixing plate, and a through hole is opened on the guide plate, a strong magnetic block is installed on the right side of the hollow cavity, a fixing pin is penetrated above the fixing bolt, a threaded rod is installed above the movable block, and a movable nut is installed on the threaded rod, and an elastic block is installed on the upper end of the threaded rod, and a movable nut is installed on the fixing bolt.

[0008] Preferably, the movable block is located in the hollow cavity, and a sliding connection structure is formed between the movable block and the guide rail, and the left side of the movable block is connected to the inside of the hollow cavity through a telescopic spring.

[0009] With the above structural design, when the movable block moves left and right under force, the movable block can move left and right along the guide rail, so that the movable block is more stable when moving left and right without deviation.

[0010] Preferably, the fixing plate is located outside the fixing bolt, and a sliding connection structure is formed between the connecting rod on the fixing plate and the fixing bolt.

[0011] With the above structural design, the movable block can be driven to move left and right through the fixed plate and the connecting rod, and the connecting rod can further limit the movement of the movable block, making the movable block more stable when moving.

[0012] Preferably, a sliding connection structure is formed between the guide plate and the fixing bolt, and the guide plate passes through the fixing bolt, and the guide plate and the connecting rod are parallel to each other.

[0013] With the above structural design, when the fixed plate and the connecting rod push the movable block to move, the guide plate above the connecting rod moves synchronously, which facilitates the subsequent limitation of the connecting rod and the movable block through the cooperation of the fixed pin and the through hole on the guide plate.

[0014] Preferably, a plurality of through holes are provided, and the fixing pin can pass through the through holes, and the fixing pin is designed as a solid metal structure, and the fixing pin and the strong magnetic block can be adsorbed to each other.

[0015] By adopting the above-mentioned structural design, according to the size of the connecting part, a fixing pin can be passed through the appropriate through hole, and then the connecting rod and the movable block are limited, thereby completing the limitation of the threaded rod and the movable nut on the movable block, so that the movable nut completes the limitation of the movable nut, so that the movable nut will not loosen, that is, the fixing bolt will not loosen, and then the bottom end part of the fixing pin can be adsorbed and fixed with the strong magnetic block, so that the fixing pin will not fall off.

[0016] Preferably, the threaded rods are fixedly connected to each other, and the threaded rods are connected to the movable nut via a threaded structure.

[0017] With the above structural design, the movable nut can be driven to move up and down along the threaded rod by rotating the movable nut, thereby realizing the extension and retraction of the movable nut.

[0018] Preferably, the upper surface of the elastic block abuts against the inner top surface of the movable nut, and when the movable nut contracts, the movable nut is located in the movable groove.

[0019] With the above structural design, when the movable nut extends and contracts, the elastic block always applies a rebound force to the movable nut, thereby increasing the friction between the movable nut and the threaded rod, so that the movable nut is not easy to loosen.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the anti-loosening device of the bolt:

[0021] 1. A guide rail is provided so that when the movable block moves left and right under force, the movable block can move left and right along the guide rail, so that the movable block is more stable when moving left and right without deviation;

[0022] 2. A through hole, a fixing pin and a movable nut are provided. According to the size of the connecting piece, the fixing pin can be passed through the appropriate through hole, and then the connection rod and the movable block are limited, thereby completing the limitation of the threaded rod and the movable nut on the movable block, so that the movable nut can complete the limitation of the movable nut, so that the movable nut will not loosen, that is, the fixing bolt will not loosen, and then the bottom end of the fixing pin can be adsorbed and fixed with the strong magnetic block, so that the fixing pin will not fall off;

[0023] 3. An elastic block is provided. By rotating the movable nut, the movable nut can be driven to move up and down along the threaded rod, thereby realizing the extension and contraction of the movable nut. When the movable nut is extended and contracted, the elastic block always applies a rebound force to the movable nut, thereby increasing the friction between the movable nut and the threaded rod, so that the movable nut is not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a partial cross-sectional structural diagram of the fixing bolt of the utility model;

[0025] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0027] Figure 4 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the utility model when the movable nut is contracted;

[0029] Figure 6 This is a schematic diagram of the guide plate and through hole position structure of the utility model.

[0030] In the figure: 1. Connecting piece; 2. Fixing bolt; 3. Hollow cavity; 4. Movable groove; 5. Guide rail; 6. Movable block; 7. Telescopic spring; 8. Connecting rod; 9. Fixing plate; 10. Guide plate; 11. Through hole; 12. Strong magnetic block; 13. Fixing pin; 14. Threaded rod; 15. Movable nut; 16. Elastic block; 17. Movable nut. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-6The utility model provides a technical solution: a bolt anti-loosening device, including a connecting piece 1, a fixing bolt 2, a hollow cavity 3, a movable groove 4, a guide rail 5, a movable block 6, a telescopic spring 7, a connecting rod 8, a fixing plate 9, a guide plate 10, a through hole 11, a strong magnetic block 12, a fixing pin 13, a threaded rod 14, a movable nut 15, an elastic block 16 and a movable nut 17, the connecting piece 1 is penetrated by a fixing bolt 2, and a hollow cavity 3 is provided in the fixing bolt 2, and a movable groove 4 is provided above the hollow cavity 3, a guide rail 5 is installed at the inner bottom of the hollow cavity 3, and a movable block 6 is installed on the guide rail 5, and the movable block 6 is located in the hollow cavity 3. The movable block 6 is provided with a sliding connection structure between the movable block 6 and the guide rail 5, and the left side of the movable block 6 is connected to the inside of the hollow cavity 3 by a telescopic spring 7, so that when the movable block 6 is forced to move left and right, the movable block 6 can move left and right along the guide rail 5, so that the movable block 6 is more stable when moving left and right, and will not deviate. A connecting rod 8 is installed on the right side of the movable block 6, and a fixing plate 9 is installed on the right end of the connecting rod 8. The fixing plate 9 is located on the outside of the fixing bolt 2, and a sliding connection structure is formed between the connecting rod 8 on the fixing plate 9 and the fixing bolt 2. The movable block 6 can be driven to move left and right through the fixing plate 9 and the connecting rod 8. The connecting rod 8 can It further limits the movement of the movable block 6, making the movable block 6 more stable when moving, and a guide plate 10 is installed on the left side of the fixed plate 9, a sliding connection structure is formed between the guide plate 10 and the fixing bolt 2, and the guide plate 10 runs through the fixing bolt 2, and the guide plate 10 and the connecting rod 8 are parallel to each other. When the fixed plate 9 and the connecting rod 8 push the movable block 6 to move, the guide plate 10 above the connecting rod 8 moves synchronously, which is convenient for the subsequent cooperation between the fixing pin 13 and the through hole 11 on the guide plate 10 to achieve the limiting of the connecting rod 8 and the movable block 6, and a through hole 11 is opened on the guide plate 10, and the through hole 11 is provided with Several, and the fixing pin 13 can pass through the through hole 11, and the fixing pin 13 is designed with a solid metal structure. The fixing pin 13 and the strong magnetic block 12 can be adsorbed with each other. According to the size of the connecting piece 1, the fixing pin 13 can pass through the applicable through hole 11, and then the connecting rod 8 and the movable block 6 are limited, thereby completing the limitation of the threaded rod 14 and the movable nut 15 on the movable block 6, so that the movable nut 15 completes the limitation of the movable nut 17, so that the movable nut 17 will not loosen, that is, the fixing bolt 2 will not loosen, and then the bottom end part of the fixing pin 13 can be adsorbed and fixed with the strong magnetic block 12, so that the fixing pin 13 will not fall off.

[0033] A strong magnetic block 12 is installed on the right side of the hollow cavity 3, a fixing pin 13 is passed through the top of the fixing bolt 2, a threaded rod 14 is installed above the movable block 6, the threaded rod 14 is fixedly connected to the threaded rod 14, and the threaded rod 14 is connected to the movable nut 15 by a threaded structure. By rotating the movable nut 15, the movable nut 15 can be driven to move up and down along the threaded rod 14, thereby realizing the extension and contraction of the movable nut 15, and a movable nut 15 is installed on the threaded rod 14, and an elastic block 16 is installed on the upper end of the threaded rod 14, the upper surface of the elastic block 16 abuts against the inner top surface of the movable nut 15, and when the movable nut 15 contracts, the movable nut 15 is located in the movable groove 4, and when the movable nut 15 extends and contracts, the elastic block 16 always applies a rebound force to the movable nut 15, thereby increasing the friction between the movable nut 15 and the threaded rod 14, so that the movable nut 15 is not easy to loosen, and a movable nut 17 is installed on the fixing bolt 2.

[0034] Working principle: When using the anti-loosening device of the bolt, first, the fixing bolt 2 is passed through the connecting piece 1, and then the movable nut 17 is connected with the fixing bolt 2 to fix the connecting piece 1, and then the movable nut 15 is rotated to drive the movable nut 15 to move upward along the threaded rod 14, so as to realize the extension of the movable nut 15. When the movable nut 15 is extended, the elastic block 16 always applies a rebound force to the movable nut 15, so as to increase the friction between the movable nut 15 and the threaded rod 14, so that the movable nut 15 is not easy to loosen, and then pushed to the left. Move the fixed plate 9 and the connecting rod 8, and the connecting rod 8 pushes the movable block 6 to the left. When the fixed plate 9 and the connecting rod 8 push the movable block 6 to move, the guide plate 10 above the connecting rod 8 moves synchronously until the movable nut 15 abuts against the movable nut 17, and then the fixing pin 13 is inserted into the through hole 11 on the guide plate 10 to limit the connecting rod 8 and the movable block 6, so that the movable nut 17 will not loosen, that is, the fixing bolt 2 will not loosen, and then the bottom end of the fixing pin 13 can be adsorbed and fixed with the strong magnetic block 12, so that the fixing pin 13 will not fall off. Thus a series of work is completed. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bolt anti-loosening device, comprising a connecting member (1), a fixing bolt (2), a movable block (6) and a guide plate (10), characterized in that: The connecting member (1) is penetrated by a fixing bolt (2), and a hollow cavity (3) is formed in the fixing bolt (2), and a movable groove (4) is formed above the hollow cavity (3), a guide rail (5) is installed at the inner bottom of the hollow cavity (3), and a movable block (6) is installed on the guide rail (5), and a connecting rod (8) is installed on the right side of the movable block (6), a fixing plate (9) is installed at the right end of the connecting rod (8), and a guide plate (9) is installed on the left side of the fixing plate (9). A plate (10) is provided, and a through hole (11) is provided on the guide plate (10), a strong magnetic block (12) is installed on the right side of the hollow cavity (3), a fixing pin (13) passes through the top of the fixing bolt (2), a threaded rod (14) is installed above the movable block (6), and a movable nut (15) is installed on the threaded rod (14), and an elastic block (16) is installed at the upper end of the threaded rod (14), and a movable nut (17) is installed on the fixing bolt (2).

2. The bolt anti-loosening device according to claim 1, characterized in that: The movable block (6) is located in the hollow cavity (3), and a sliding connection structure is formed between the movable block (6) and the guide rail (5), and the left side of the movable block (6) is connected to the inside of the hollow cavity (3) through a telescopic spring (7).

3. The bolt anti-loosening device according to claim 1, characterized in that: The fixing plate (9) is located outside the fixing bolt (2), and a sliding connection structure is formed between the connecting rod (8) on the fixing plate (9) and the fixing bolt (2).

4. The bolt anti-loosening device according to claim 1, characterized in that: A sliding connection structure is formed between the guide plate (10) and the fixing bolt (2), the guide plate (10) penetrates the fixing bolt (2), and the guide plate (10) and the connecting rod (8) are parallel to each other.

5. The bolt anti-loosening device according to claim 1, characterized in that: A plurality of through holes (11) are provided, and the fixing pin (13) can pass through the through hole (11). The fixing pin (13) is designed as a solid metal structure, and the fixing pin (13) and the strong magnetic block (12) can be mutually adsorbed.

6. The bolt anti-loosening device according to claim 1, characterized in that: The threaded rods (14) are fixedly connected to each other, and the threaded rods (14) and the movable nut (15) are connected by a threaded structure.

7. The bolt anti-loosening device according to claim 1, characterized in that: The upper surface of the elastic block (16) abuts against the inner top surface of the movable nut (15), and when the movable nut (15) contracts, the movable nut (15) is located in the movable groove (4).

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