Tight type anti-falling bolt

Abstract

The utility model relates to the field of bolts, and provides a tight type anti-falling bolt which comprises a bolt body. The connecting plate is fixedly arranged on one side of the bolt body, and first connecting rods are fixedly arranged on the inner walls of the two sides of the connecting plate. During use, by holding the base, the two adjusting plates are pushed to move in the opposite directions at the moment, the two sliding plates further drive the two sliding barrels to move in the opposite directions, the length of the bolt body is increased, and the bolt body can be conveniently adjusted; the bolt body can be inserted into the fixing hole, at the moment, the outer surface of the bolt body can be sleeved with the first nut, the length of the bolt can be adjusted, and the bolt can be conveniently inserted into the fixing holes with different depths; the first nut and the second nut are arranged on the outer surface of the bolt body in a sleeving mode by rotating the connecting cylinder, the bolt is fixed, and when the bolt body is vibrated, friction force is increased through combination and interaction of the first nut and the second nut.

Description

Technical Field

[0001] This application relates to the field of bolts, and in particular to a tight-fitting anti-loosening bolt. Background Technology

[0002] Bolts are widely used as connecting elements in the installation of mechanical structures and equipment. Especially when subjected to external forces, vibrations, or pressures, the stability and reliability of bolted connections are of paramount importance.

[0003] Traditional bolt structures are prone to loosening or falling off under prolonged use or external force, leading to failure of the connectors or even damage to the equipment. Most existing anti-loosening bolt technologies use auxiliary components such as nuts and washers to enhance the fastening effect by increasing friction or through spring action. Common design methods include using anti-loosening devices such as self-locking nuts, nylon washers, and spring washers. Although these can solve the loosening problem to some extent, they still have some shortcomings in practical applications. Some bolts are not long enough to accommodate fixing holes of different depths, and they cannot effectively overcome loosening problems in strong vibration environments. Utility Model Content

[0004] This application provides a tight-fitting anti-loosening bolt. When using the bolt, the length of the bolt can be adjusted to facilitate insertion into fixing holes of different depths. When using the bolt, the tightening effect of the bolt is good, preventing it from falling off.

[0005] To achieve the above objectives, this application adopts the following technical solution: a tight-fitting anti-loosening bolt, the bolt comprising:

[0006] Bolt body;

[0007] A connecting plate is fixedly installed on one side of the bolt body, and a first connecting rod is fixedly installed on the inner wall of both sides of the connecting plate;

[0008] Two transmission rods are respectively movably sleeved on the outer surfaces of the two first connecting rods, and a second connecting rod is movably embedded on one side of each of the two transmission rods. The two transmission rods can rotate about the two first connecting rods or the two second connecting rods as axes.

[0009] Two sliding cylinders are fixedly installed on one side of the two second connecting rods, and support rods are movably embedded in the inner walls of the two sliding cylinders, allowing the two sliding cylinders to slide on the outer surface of the support rods;

[0010] The base is fixedly mounted on both sides of the support rod.

[0011] As a further improvement of this application: a spring is fixedly provided on one side of each of the two slide cylinders, a sliding plate is fixedly provided on the outer surface of each of the two slide cylinders, and an adjusting plate is fixedly provided on one side of each of the two sliding plates.

[0012] As a further improvement of this application: a first nut is threaded on the outer surface of the bolt body, and a connecting sleeve is fixedly provided on one side of the first nut.

[0013] As a further improvement of this application: a second nut is fixedly provided on one side of the connecting cylinder. The second nut is threaded onto the outer surface of the bolt body. When the bolt body is vibrated, the first nut and the second nut interact to increase the friction force, so that the bolt will not loosen due to external force.

[0014] As a further improvement of this application: multiple protrusions are fixedly provided on the inner wall of the connecting cylinder, and a rubber pad is fixedly provided on one side of the multiple protrusions. The multiple protrusions make the inner wall of the rubber pad tightly adhere to the outer surface of the bolt body, thereby increasing the friction between the connecting cylinder and the bolt body and further improving the bolt fastening effect.

[0015] As a further improvement of this application: a washer is fixedly provided on one side of the second nut, and multiple serrated plates are fixedly provided on one side of the washer. The multiple washers on the washer will contact the surface of the object, and the friction between the second nut and the object is increased by the teeth on the multiple washers.

[0016] As a further improvement of this application: the outer surface of the bolt body is coated with a tetrafluoroethylene coating, which can increase the friction between the bolt and the connecting surface and reduce the risk of loosening.

[0017] As a further improvement of this application: a slot is provided on one side of the base, and the two sliding plates are slidably disposed on the inner wall of the slot, and the two sliding plates can slide on the inner wall of the slot.

[0018] Compared with the prior art, the advantages and positive effects of this application are as follows:

[0019] In this application, when the bolt body is not long enough, by holding the base, the two adjusting plates are pushed to move in opposite directions, which in turn drives the two sliding cylinders to move in opposite directions. The two sliding cylinders compress the spring, further increasing the length of the bolt body, allowing the bolt body to be inserted into the fixing hole. At this time, a first nut can be put on the outer surface of the bolt body. The length of the bolt can be adjusted to facilitate insertion into fixing holes of different depths. When fixing, a second nut and a first nut are put on the outer surface of the bolt body, and the connecting cylinder is rotated so that the first nut and the second nut are put on the outer surface of the bolt body, fixing the bolt. When the bolt body is vibrated, the first nut and the second nut interact to increase the friction, resulting in a better bolt tightening effect and preventing it from falling off. Attached Figure Description

[0020] Figure 1 This is a frontal three-dimensional structural diagram of a tight-fitting anti-loosening bolt proposed in this application.

[0021] Figure 2 This is a side-view three-dimensional structural diagram of a tight-fitting anti-loosening bolt proposed in this application.

[0022] Figure 3 This is a cross-sectional three-dimensional structural diagram of the base in a tight-fitting anti-loosening bolt proposed in this application.

[0023] Figure 4 This is a cross-sectional three-dimensional structural diagram of the base in a tight-fitting anti-loosening bolt proposed in this application.

[0024] Figure 5 This is a three-dimensional structural diagram of the disassembly of the connecting cylinder in a tight-fitting anti-loosening bolt proposed in this application.

[0025] Legend: 1. Bolt body; 2. Connecting plate; 201. First connecting rod; 202. Transmission rod; 203. Second connecting rod; 204. Slide cylinder; 205. Support rod; 206. Base; 207. Slide plate; 208. Adjusting plate; 209. Groove; 210. Spring; 3. First nut; 301. Connecting cylinder; 302. Second nut; 303. Protrusion; 304. Rubber pad; 305. Washer; 306. Serrated plate; 307. PTFE coating. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways than those described herein, and therefore this application is not limited to the specific embodiments disclosed in the following specification.

[0028] Example 1, such as Figure 1 - Figure 5 As shown, this application provides a tight-fitting anti-loosening bolt, which includes: a bolt body 1; a connecting plate 2, fixedly disposed on one side of the bolt body 1, and a first connecting rod 201 fixedly disposed on the inner wall of both sides of the connecting plate 2; two transmission rods 202, respectively movably sleeved on the outer surface of the two first connecting rods 201, and a second connecting rod 203 movably embedded on one side of each of the two transmission rods 202; two sliding cylinders 204, respectively fixedly disposed on one side of the two second connecting rods 203, and a support rod 205 movably embedded on the inner wall of each of the two sliding cylinders 204; a base 206, fixedly disposed on both sides of the support rod 205, a spring 210 fixedly disposed on the opposite side of each of the two sliding cylinders 204, a sliding plate 207 fixedly disposed on the outer surface of each of the two sliding cylinders 204, an adjusting plate 208 fixedly disposed on one side of each of the two sliding plates 207, a slot 209 opened on one side of the base 206, and the two sliding plates 207 slidably disposed on the inner wall of the slot 209.

[0029] By adopting the above technical solution, the two sliding cylinders 204 can slide on the outer surface of the support rod 205, and the two transmission rods 202 can rotate around the two first connecting rods 201 or the two second connecting rods 203 respectively. When the two sliding cylinders 204 move relative to each other, the two transmission rods 202 push the connecting plate 2, increasing the length of the bolt body 1. When the bolt body 1 is not long enough, by holding the base 206, the two adjusting plates 208 are pushed to move in opposite directions. The two sliding plates 207 drive the two sliding cylinders 204 to move in opposite directions, and the two sliding cylinders 204 compress the spring 210. When the spring 210 is compressed, it will generate a reverse force, further increasing the length of the bolt body 1, so that the bolt body 1 can be inserted into the fixed hole. At this time, the first nut 3 can be put on the outer surface of the bolt body 1. When the two adjusting plates 208 are loosened, the elastic force generated by the support rod 205 pushes the two sliding cylinders 204 back to their original positions.

[0030] Example 2, as Figure 1 - Figure 5As shown, a first nut 3 is threaded onto the outer surface of the bolt body 1. A connecting sleeve 301 is fixedly installed on one side of the first nut 3. A second nut 302 is fixedly installed on one side of the connecting sleeve 301. The second nut 302 is threaded onto the outer surface of the bolt body 1. Multiple protrusions 303 are fixedly installed on the inner wall of the connecting sleeve 301. A rubber pad 304 is fixedly installed on one side of the multiple protrusions 303. A washer 305 is fixedly installed on one side of the second nut 302. Multiple serrated plates 306 are fixedly installed on one side of the washer 305. A tetrafluoroethylene coating 307 is applied to the outer surface of the bolt body 1.

[0031] By adopting the above technical solution, the bolt is fixed by fitting a second nut 302 and a first nut 3 onto the outer surface of the bolt body 1, and rotating the connecting cylinder 301 so that the first nut 3 and the second nut 302 are fitted onto the outer surface of the bolt body 1. When the bolt body 1 is subjected to vibration, the first nut 3 and the second nut 302 interact to increase friction, preventing the bolt from loosening due to external force. The rubber pad 304 is soft and elastic, and multiple protrusions 303 make the inner wall of the rubber pad 304 adhere tightly to the outer surface of the bolt body 1, increasing the friction between the connecting cylinder 301 and the bolt body 1, further improving the bolt fastening effect. During fixing, multiple washers 305 on the washer 305 will contact the object surface, and the teeth on the multiple washers 305 increase the friction between the second nut 302 and the object, further improving the bolt fastening effect. The tetrafluoroethylene coating 307 applied to the outer surface of the bolt body 1 can increase the friction between the bolt and the connecting surface, reducing the risk of loosening.

[0032] Working principle: When using the bolt, the two sliding cylinders 204 can slide on the outer surface of the support rod 205. The two transmission rods 202 can rotate around the two first connecting rods 201 or the two second connecting rods 203, respectively. When the two sliding cylinders 204 move relative to each other, the two transmission rods 202 push the connecting plate 2, increasing the length of the bolt body 1. When the bolt body 1 is not long enough, by holding the base 206, the two adjusting plates 208 are pushed to move in opposite directions. This further drives the two sliding cylinders 204 to move in opposite directions through the two sliding plates 207, and the two sliding cylinders 204 compress the spring 210. When the spring 210 is compressed, it generates a reverse force, further increasing the length of the bolt body 1, allowing the bolt body 1 to be inserted into the fixing hole. At this time, the first nut 3 can be put on the outer surface of the bolt body 1. When the two adjusting plates 208 are loosened, the elastic force generated by the support rod 205 pushes the two sliding cylinders 204 back to their original positions. Thus, when using the bolt, the bolt... The length can be adjusted to facilitate insertion into fixing holes of different depths. During fixing, the second nut 302 and the first nut 3 are fitted onto the outer surface of the bolt body 1. The connecting cylinder 301 is rotated so that the first nut 3 and the second nut 302 are fitted onto the outer surface of the bolt body 1, thus fixing the bolt. When the bolt body 1 is subjected to vibration, the first nut 3 and the second nut 302 interact to increase friction, preventing the bolt from loosening due to external forces. The rubber pad 304 is soft and elastic. Multiple protrusions 303 ensure that the inner wall of the rubber pad 304 is tightly attached to the outer surface of the bolt body 1, increasing the friction between the connecting cylinder 301 and the bolt body 1, further improving the bolt tightening effect. During fixing, multiple washers 305 on the washer 305 will contact the surface of the object. The teeth on the multiple washers 305 increase the friction between the second nut 302 and the object, further improving the bolt tightening effect. Therefore, when using the bolt, the bolt tightening effect is good, preventing it from falling off.

[0033] The above are merely preferred embodiments and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A close type anti-drop bolt characterized by, The bolt comprises: A bolt body (1); A connecting plate (2) is fixedly arranged on one side of the bolt body (1), and first connecting rods (201) are fixedly arranged on the inner walls of the two sides of the connecting plate (2); Two transmission rods (202) are movably sleeved on the outer surfaces of the two first connecting rods (201), and second connecting rods (203) are movably embedded on one side of the two transmission rods (202); Two sliding cylinders (204) are fixedly arranged on one side of the two second connecting rods (203), and support rods (205) are movably embedded on the inner walls of the two sliding cylinders (204); A base (206) is fixedly arranged on the two sides of the support rod (205).

2. A close tolerance anti-backout bolt according to claim 1 wherein: The opposite side of each of the two sliding cylinders (204) is fixedly provided with a spring (210), the outer surface of each of the two sliding cylinders (204) is fixedly provided with a sliding plate (207), and the side of each of the two sliding plates (207) is fixedly provided with an adjusting plate (208).

3. The close-tolerance, anti-backout bolt of claim 1, wherein: A first nut (3) is threadedly sleeved on the outer surface of the bolt body (1), and a connecting cylinder (301) is fixedly arranged on one side of the first nut (3).

4. A close tolerance anti-backout bolt according to claim 3 wherein: A second nut (302) is fixedly arranged on one side of the connecting cylinder (301), and the second nut (302) is threadedly sleeved on the outer surface of the bolt body (1).

5. A close tolerance anti-backout bolt according to claim 4 wherein: A plurality of protrusions (303) are fixedly arranged on the inner wall of the connecting cylinder (301), and rubber pads (304) are fixedly arranged on one side of the plurality of protrusions (303).

6. A close tolerance anti-backout bolt according to claim 5 wherein: A gasket (305) is fixedly arranged on one side of the second nut (302), and a plurality of sawtooth plates (306) are fixedly arranged on one side of the gasket (305).

7. A close tolerance, non-backout bolt as defined in claim 1 wherein: A tetrafluoroethylene coating (307) is brushed on the outer surface of the bolt body (1).

8. A close tolerance, non-backout bolt as defined in claim 2 wherein: A notch (209) is formed on one side of the base (206), and the two sliding plates (207) are slidingly arranged on the inner wall of the notch (209).

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