Anti-loose and anti-theft bolt
By using a screw and shaped nut design, combined with compressible rubber pads and anti-slip textures, the problem of loosening and theft of traditional bolts under vibration is solved, achieving the effect of preventing loosening and theft. It is suitable for connecting roadside anti-glare panels on highways and bridges.
Patent Information
- Application Number
- CN202520022836.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Traditional bolts are prone to loosening under vibration or impact and have insufficient anti-theft performance, leading to connection failure, especially posing a safety hazard in the application of roadside anti-glare panels on highways and bridges.
The screw is designed with a small diameter in the middle and a large diameter at both ends. It is equipped with a special-shaped nut and a compressible rubber pad. The rubber pad and the special-shaped nut are fitted together with anti-slip texture to increase friction. The special-shaped nut is designed with a hexagonal frustum structure to enhance the fixing effect, and hexagonal holes are set on both sides of the screw for easy installation.
It effectively prevents bolts from loosening and being stolen, enhances the fastening effect, and ensures connection stability and security.
Smart Images
Figure CN223648274U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fastener technology, specifically relating to an anti-loosening and anti-theft bolt. Background Technology
[0002] In the fastener industry, preventing bolt loosening and theft has always been a key concern for engineers. Traditional bolts are prone to loosening under external forces such as vibration and impact, leading to connection failure and potentially causing equipment malfunctions or safety accidents. Furthermore, in situations with high security requirements, such as roadside glare shields on highways and bridges, preventing bolt theft is also crucial.
[0003] Most bolts on the market today use a single thread structure, connected by tightening a nut. However, this structure is prone to connection failure due to thread wear and loosening after prolonged use or under external force. Furthermore, traditional bolts have weak anti-theft properties, making them easily disassembled by criminals. Utility Model Content
[0004] This utility model overcomes the shortcomings of the prior art and proposes an anti-loosening and anti-theft bolt; it solves the problem that the fastening bolts used for roadside anti-glare panels on highways and bridges have poor anti-loosening and anti-theft effects.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.
[0006] An anti-loosening and anti-theft bolt includes a screw, shaped nuts, and rubber washers. The middle part of the screw is a small-diameter section, and both ends of the screw are large-diameter sections. External threads are provided on the outer cylindrical surface of the large-diameter sections at both ends of the screw. The two rubber washers are both semi-cylindrical structures, and the two rubber washers are spliced together to form a complete cylindrical structure. The two spliced rubber washers are sleeved on the outer side of the small-diameter section of the screw. The two shaped nuts are respectively screwed onto the outer side of the two large-diameter sections of the screw, and the two shaped nuts are in contact with the two rubber washers respectively.
[0007] Furthermore, the outer diameters of the large-diameter sections at both ends of the screw are the same, and the outer diameters of the large-diameter sections at both ends of the screw are larger than the outer diameters of the small-diameter section in the middle of the screw.
[0008] Furthermore, a hexagonal hole is provided at the center of each of the two end faces of the screw.
[0009] Furthermore, a semi-cylindrical mounting groove is provided on each of the two rubber pads on the side end faces that are close to each other, and the axis of the mounting groove coincides with the axis of the rubber pad.
[0010] Furthermore, when the two rubber pads are spliced together, the mounting grooves on the two rubber pads form a complete cylindrical mounting through groove. The mounting through groove formed by the two rubber pads is fitted onto the outside of the small diameter section of the screw, and the end faces of the two rubber pads respectively contact the end faces of the two large diameter sections of the screw that are close to each other.
[0011] Furthermore, anti-slip textures are provided on the end faces of both ends of the two rubber pads.
[0012] Furthermore, anti-slip patterns are provided on the end faces of the two irregularly shaped nuts that are close to each other, and the anti-slip patterns on the irregularly shaped nuts are in contact with the anti-slip patterns on the rubber pad.
[0013] Furthermore, the outer surface of the irregular nut is a hexagonal frustum structure, and the larger end face of the irregular nut contacts the rubber pad, that is, the anti-slip texture is set on the larger end face of the irregular nut.
[0014] The beneficial effects of this utility model compared to the prior art are as follows:
[0015] This utility model provides an anti-loosening and anti-theft bolt. The design of the double-sided irregular-shaped nuts and matching screw effectively prevents the bolt from being stolen. The compressible rubber pads with anti-slip textures on the upper and lower surfaces effectively prevent the two irregular-shaped nuts from rotating, thus preventing loosening. The irregular-shaped nut end faces are provided with knurled anti-slip textures, which effectively increase the contact area between the irregular-shaped nut end faces, the workpiece, and the rubber pads, thereby increasing the friction and enhancing the fastening and anti-loosening effect. The hexagonal hole design at the bottom of the screw can fix the screw and facilitate the screwing in of the irregular-shaped nuts. The external threads on both sides of the screw, combined with the compressible rubber pads, effectively prevent the bolt from loosening. Attached Figure Description
[0016] The present invention will now be described in further detail with reference to the accompanying drawings:
[0017] Figure 1 This is a three-dimensional schematic diagram of the entire utility model. Figure 1 ;
[0018] Figure 2 This is a three-dimensional schematic diagram of the entire utility model. Figure 2 ;
[0019] Figure 3 This is a front view of the entire utility model;
[0020] Figure 4 This is an exploded view of this utility model;
[0021] Figure 5 It is a three-dimensional schematic diagram of the screw;
[0022] Figure 6 This is a 3D schematic diagram of a rubber pad;
[0023] Figure 7 This is a 3D illustration of an irregularly shaped nut. Figure 1 ;
[0024] Figure 8 This is a 3D illustration of an irregularly shaped nut. Figure 2 ;
[0025] Among them, 1 is the screw, 2 is the small diameter section, 3 is the large diameter section, 4 is the hexagonal hole, 5 is the rubber pad, 6 is the mounting groove, 7 is the anti-slip texture, 8 is the irregular nut, and 9 is the workpiece. Detailed Implementation
[0026] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.
[0027] like Figure 1 As shown in Figure 8, this utility model provides an anti-loosening and anti-theft bolt, including a screw 1, a special-shaped nut 8, and a rubber washer 5.
[0028] The screw 1 is a straight cylindrical structure. The middle part of the screw 1 is a small diameter section 2, and the two ends of the screw 1 are large diameter sections 3. The outer diameters of the large diameter sections 3 at both ends of the screw 1 are the same, and the outer diameters of the large diameter sections 3 at both ends of the screw 1 are greater than the outer diameters of the small diameter sections 2 in the middle of the screw 1.
[0029] A hexagonal hole 4 is provided at the center of each of the two end faces of the screw 1.
[0030] External threads are provided on the outer cylindrical surface of the large-diameter section 3 at both ends of the screw 1, and the external threads on the large-diameter section 3 at both ends have the same direction of rotation.
[0031] The rubber pads 5 are in pairs, each a semi-cylindrical structure, which together form a complete cylindrical structure. A semi-cylindrical mounting groove 6 is provided on each of the two rubber pads 5 on their adjacent end faces, the axis of which coincides with the axis of the rubber pad 5. Anti-slip textures 7 are provided on the end faces of both rubber pads 5. When the two rubber pads 5 are joined together, the mounting grooves 6 on the two rubber pads 5 form a complete cylindrical mounting groove, which fits over the outside of the small-diameter section 2 of the screw 1, and the end faces of the two rubber pads 5 respectively contact the adjacent end faces of the two large-diameter sections 3 of the screw 1.
[0032] Two irregularly shaped nuts 8 are provided, each screwed onto the outer side of one of the two large-diameter sections 3 of the screw 1, and each nut 8 contacts one of the two rubber pads 5. Anti-slip patterns 7 are provided on the side end faces of the two irregularly shaped nuts 8 that are close to each other, and these patterns 7 fit snugly against the anti-slip patterns 7 on the rubber pads 5. The outer surface of the irregularly shaped nut 8 has a hexagonal frustum structure, and the side end face with the larger area of the nut 8 contacts the rubber pad 5; that is, the anti-slip pattern 7 is provided on the side end face with the larger area of the nut 8.
[0033] The thickness of the irregular nut 8 is greater than 2 / 3 of the length of the small diameter section 2 of the screw 1.
[0034] The working principle of this utility model is as follows:
[0035] Before use, remove the two irregular nuts 8 and the two rubber pads 5 from the screw 1.
[0036] When using it, first splice the two rubber pads 5 together so that the two spliced rubber pads 5 fit over the outside of the small diameter section 2 of the screw 1.
[0037] Then, the workpiece 9 to be clamped is fitted onto the outside of the two spliced rubber pads 5, that is, the workpiece 9 to be clamped is fitted onto the outside of the small diameter section 2 of the screw 1. In this step, the opening size on the workpiece 9 to be clamped is required to be greater than the maximum outer diameter of the rubber pad 5 in the unstressed state, the maximum outer diameter of the rubber pad 5 is greater than the maximum outer diameter of the screw 1, the thickness of the workpiece 9 to be clamped is less than the length of the small diameter section 2 of the screw 1, and the thickness of the workpiece 9 to be clamped is less than the height of the rubber pad 5.
[0038] Next, screw the two irregular nuts 8 onto the outer sides of the two large-diameter sections 3 of the screw rod 1, respectively. As the irregular nuts 8 are tightened, the rubber pads are continuously compressed until the distance between the two end faces of the rubber pads is the same as the thickness of the workpiece 9 to be clamped, and the preset torque has been reached. Then, stop screwing the irregular nuts 8 in. During the installation process, if it is inconvenient to screw the irregular nuts 8 onto the screw rod 1, the hexagonal holes 4 at both ends of the screw rod 1 can be used to fix the screw rod first, and then the irregular nuts 8 can be screwed onto the screw rod 1.
[0039] After installation, both ends of the irregular-shaped nut 8 are in contact with the rubber pad 5 and the workpiece 9. The contact between the irregular-shaped nut 8 and the workpiece 9 ensures sufficient friction to keep the workpiece 9 stable. The knurled anti-slip texture 7 on the end face of the irregular-shaped nut 8 further enhances the friction. Both irregular-shaped nuts 8 are in contact with the rubber pad 5. The friction provided by the rubber pad 5 prevents the two irregular-shaped nuts 8 from rotating and loosening under vibration conditions, thus achieving the effect of preventing loosening.
[0040] If unauthorized personnel want to steal workpiece 9 by disassembling the irregular nut 8, they will need special tools to remove the irregular nut 8. Conventional tools cannot remove the irregular nut 8, thus achieving the effect of theft prevention.
[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A type of anti-loosening and anti-theft bolt, characterized in that: Includes a screw (1), a shaped nut (8), and a rubber pad (5). The middle part of the screw (1) is a small diameter section (2), and the two ends of the screw (1) are large diameter sections (3). External threads are provided on the outer cylindrical surface of the large diameter sections (3) at both ends of the screw (1). The two rubber pads (5) are both semi-cylindrical structures. The two rubber pads (5) are spliced into a complete cylindrical structure. The two spliced rubber pads (5) are sleeved on the outside of the small diameter section (2) of the screw (1). The two shaped nuts (8) are respectively screwed on the outside of the two large diameter sections (3) of the screw (1), and the two shaped nuts (8) are respectively in contact with the two rubber pads (5).
2. The anti-loosening and anti-theft bolt according to claim 1, characterized in that: The outer diameters of the large-diameter sections (3) at both ends of the screw (1) are the same, and the outer diameters of the large-diameter sections (3) at both ends of the screw (1) are greater than the outer diameters of the small-diameter sections (2) in the middle of the screw (1).
3. The anti-loosening and anti-theft bolt according to claim 1, characterized in that: A hexagonal hole (4) is provided at the center of each of the two end faces of the screw (1).
4. The anti-loosening and anti-theft bolt according to claim 1, characterized in that: A semi-cylindrical mounting groove (6) is provided on the side end face of the two rubber pads (5) that are close to each other, and the axis of the mounting groove (6) coincides with the axis of the rubber pad (5).
5. The anti-loosening and anti-theft bolt according to claim 4, characterized in that: When the two rubber pads (5) are spliced together, the mounting grooves (6) on the two rubber pads (5) form a complete cylindrical mounting groove. The mounting groove formed by the two rubber pads (5) is fitted onto the outside of the small diameter section (2) of the screw (1), and the end faces of the two rubber pads (5) respectively contact the end faces of the two large diameter sections (3) of the screw (1) that are close to each other.
6. The anti-loosening and anti-theft bolt according to claim 1, characterized in that: Anti-slip texture (7) is provided on the end faces of the two rubber pads (5).
7. The anti-loosening and anti-theft bolt according to claim 6, characterized in that: Anti-slip patterns (7) are provided on the side end faces of the two irregular nuts (8) that are close to each other, and the anti-slip patterns (7) on the irregular nuts (8) are in contact with the anti-slip patterns (7) on the rubber pad (5).
8. The anti-loosening and anti-theft bolt according to claim 1, characterized in that: The outer surface of the irregular nut (8) is a hexagonal frustum structure. The larger end face of the irregular nut (8) is in contact with the rubber pad (5), that is, the anti-slip pattern (7) is set on the larger end face of the irregular nut (8).