Self-locking type anti-seismic and anti-loosening bolt
By designing anti-detachment components on the bolts, and using the cooperation of the abrasive plate and the return spring, the bolts are self-locking and anti-loosening, solving the problem of loosening the bolts in vibrating environments, and improving the safety and anti-shaking effect of the connection.
Patent Information
- Application Number
- CN202422406366.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The bolts and nuts are easily reversed in a vibrating environment, causing the nuts to fall off the bolts, causing safety accidents.
A bolt including a bolt body, a connecting sleeve and an anti-detachment assembly is designed. The anti-detachment assembly consists of a connecting rod, a grinding plate, a limiting plate, a pushing plate, a clamping bump and a return spring. After the grinding plate contacts the fastener, it drives the pushing plate and a limiting plate to move. The clamping bumps resist the hole slot of the fastener to be fastener, restricting the reverse rotation of the bolt, and combining with the elastic action of the return spring, self-locking and anti-loosening removal is achieved.
Effectively limit the reverse rotation of the bolts, improve the vibration resistance, prevent loosening, and ensure connection safety.
Smart Images
Figure CN223062868U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fastening bolts, in particular to a bolt capable of realizing self-locking, earthquake resistance and loosening prevention. Background Technique
[0002] Bolts are widely used in daily life and industrial production and manufacturing. The application scope of bolts includes electronic products, mechanical products, digital products, power equipment, electromechanical machinery products, ships, vehicles, water conservancy projects, and even chemical experiments. Therefore, bolts are also known as the rice of industry. Bolts play an important role in industry and are mostly used in combination with nuts.
[0003] Bolts and nuts mostly fasten structural components through threaded connections. However, in a vibrating environment, the nut is extremely easy to reverse and slowly fall off the bolt. After the bolt loses the limit of the nut, the bolt falls off from the fixing hole of the fastened structural component under the influence of the vibration force, causing the fastened structural components to become loose and leading to safety accidents. In view of this, we propose a bolt capable of realizing self-locking, earthquake resistance and loosening prevention. Content of the Utility Model
[0004] The purpose of the utility model is to provide a bolt capable of realizing self-locking, earthquake resistance and loosening prevention, so as to solve the problem that bolts and nuts mostly fasten structural components through threaded connections, but in a vibrating environment, the nut is extremely easy to reverse and slowly fall off the bolt. After the bolt loses the limit of the nut, the bolt falls off from the fixing hole of the fastened structural component under the influence of the vibration force, causing the fastened structural components to become loose and leading to safety accidents as mentioned in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A bolt capable of realizing self-locking, earthquake resistance and loosening prevention, including a bolt main body, a connecting sleeve is threadedly connected to the end of the bolt main body, and an anti-loosening component is arranged inside the connecting sleeve;
[0006] The anti-loosening component includes a connecting rod, an abrasion-increasing plate and a limiting plate. The connecting rod is movably connected inside the connecting sleeve. The abrasion-increasing plate and the limiting plate are arranged oppositely on the connecting rod. The abrasion-increasing plate is arranged outside the connecting sleeve. A pushing plate is fixedly installed in the middle of the connecting rod. A clamping convex block is arranged in a ring shape on the outer side of the pushing plate. The clamping convex block is movably clamped on the connecting sleeve. The pushing plate and the clamping convex block are in movable contact. A limiting protrusion is arranged on the outer side surface of the clamping convex block along the axial direction of the connecting sleeve. A groove is opened on one side of the connecting sleeve away from the bolt main body. A return spring is arranged inside the groove. The return spring is movably sleeved on the connecting rod.
[0007] Preferably, an arc-shaped inclined surface is arranged on one side of the clamping convex block away from the bolt main body.
[0008] Preferably, the limiting plate is movably clamped to the corresponding end of the adjacent clamping bump, and the limiting plate is arranged inside the connecting sleeve.
[0009] Preferably, the wear-increasing plate and the connecting sleeve are arranged at intervals, and the centers of the wear-increasing plate and the connecting sleeve are collinear.
[0010] Preferably, the limiting plate and the bolt body are arranged at intervals.
[0011] Preferably, a slot for inserting the clamping bump is annularly formed on the connecting sleeve.
[0012] Preferably, the clamping bump is arranged between the limiting plate and the wear-increasing plate.
[0013] Preferably, the radial cross-section of the limiting protrusion is a right trapezoid, and the inclined directions of the inclined surfaces of the adjacent limiting protrusions are opposite to the spiral direction of the bolt body.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. For the bolt capable of realizing self-locking, earthquake resistance and anti-loosening, when the bolt body is screwed into the interior of the fastener to be fastened, the bolt body can drive the wear-increasing plate to approach the fastener to be fastened and contact the fastener to be fastened; after the wear-increasing plate contacts the fastener to be fastened, the wear-increasing plate will move towards one side of the bolt body, and then drive the push plate and the limiting plate to move towards one side of the bolt body. When the push plate moves, the adjacent clamping bumps will move outwards simultaneously. At this time, the clamping bumps abut against the hole groove of the fastener to be fastened, thereby further restricting the reverse rotation of the bolt; at this time, the limiting plate disengages from the restriction on the adjacent clamping bumps; through the settings of the clamping bumps, the limiting protrusions and the wear-increasing plate, the reverse rotation of the bolt can be effectively restricted, and then the bolt can be automatically locked, so that the bolt has the effect of anti-loosening.
[0016] 2. For the bolt capable of realizing self-locking, earthquake resistance and anti-loosening, through the setting of the anti-loosening component, during the use of the bolt, the elastic action of the return spring can be utilized to further improve the anti-vibration effect of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the present utility model;
[0018] Figure 2 is a semi-sectional structural diagram of the present utility model;
[0019] Figure 3 is a schematic diagram of the non-use state of the present utility model;
[0020] Figure 4 is a schematic diagram of the use state of the present utility model;
[0021] Figure 5 Schematic diagram of the half-section structure of the anti-loosening component of the present utility model;
[0022] Figure 6 of the present utility model Figure 5 Enlarged schematic diagram at position M.
[0023] In the figure: 1, bolt body; 2, connecting sleeve; 3, anti-loosening component; 31, connecting rod; 32, wear-increasing plate; 33, clamping projection; 34, limiting projection; 35, limiting plate; 36, return spring; 37, pushing plate; 38, groove. Specific embodiments
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Embodiment: Please refer to Figures 1-6 , the present utility model provides a technical solution: a bolt that can achieve self-locking and earthquake-resistant anti-loosening, mainly aiming at the problem that bolts and nuts are mostly connected by threads to fasten structural members, but in a vibrating environment, the nuts are extremely easy to reverse and slowly fall off the bolts. After the bolts lose the limit of the nuts, the bolts fall off from the fixing holes of the structural members to be fastened under the influence of the vibration force, causing the structural members to be fastened to become loose and leading to safety accidents. The specific solution is as follows: It includes a bolt body 1, and a connecting sleeve 2 is threadedly connected to the end of the bolt body 1. The outer diameter of the threaded sleeve 2 is the same as the outer diameter of the bolt body 1, and the length of the bolt body 1 is less than 1 / 3 of the length of the bolt body 1. The connecting sleeve 2 provided on the bolt body 1 will not affect the use of the entire bolt, and there is no thread on the outer side of the connecting sleeve 2.
[0026] Please refer to Figure 2 and Figure 3 , wherein, an anti-loosening component 3 is arranged inside the connecting sleeve 2.
[0027] Specifically, the anti-loosening component 3 includes a connecting rod 31, a wear-increasing plate 32 and a limiting plate 35. The connecting rod 31 is movably connected inside the connecting sleeve 2. The wear-increasing plate 32 and the limiting plate 35 are oppositely arranged on the connecting rod 31. The wear-increasing plate 32 is arranged on the outer side of the connecting sleeve 2. The wear-increasing plate 32 and the connecting sleeve 2 are arranged at intervals, and the centers of the wear-increasing plate 32 and the connecting sleeve 2 are collinear. The outer side surface of the wear-increasing plate 32 is provided with lines for increasing friction. By providing anti-slip lines on the outer end surface of the wear-increasing plate 32, the contact friction between the bolt and the component to be fastened during the use of the bolt can be increased, and the radial rotational friction of the bolt body 1 can be effectively increased during use.
[0028] Further, the limiting plate 35 and the bolt body 1 are arranged at intervals. By making the limiting plate 35 and the bolt body 1 at intervals, it is convenient for the limiting plate 35 to move along the axial direction of the connecting sleeve 2.
[0029] Please refer to Figure 5 , wherein, a push plate 37 is fixedly installed in the middle of the connecting rod 31, and the push plate 37 and the connecting rod 31 are integrally processed. A clamping convex block 33 is arranged in a ring shape on the outer side of the push plate 37, and the clamping convex block 33 is arranged between the limiting plate 35 and the wear-increasing plate 32. A slot for the insertion of the clamping convex block 33 is formed in a ring shape on the connecting sleeve 2. During the process of screwing the bolt body 1 into the internal part of the fastener to be fastened, the bolt body 1 can drive the wear-increasing plate 32 to approach the fastener to be fastened and contact the fastener to be fastened; after the wear-increasing plate 32 contacts the fastener to be fastened, it will cause the wear-increasing plate 32 to move towards one side of the bolt body 1, and further drive the push plate 37 and the limiting plate 35 to move towards one side of the bolt body 1. When the push plate 37 moves, the adjacent clamping convex blocks 33 move outwards simultaneously. At this time, the clamping convex blocks 33 abut against the hole groove of the fastener to be fastened, thereby further restricting the reverse rotation of the bolt, avoiding the loosening situation during the use of the bolt, and further ensuring the safety of the bolt connection.
[0030] Further, the limiting plate 35 is movably clamped at the corresponding end of the adjacent clamping convex blocks 33, and the limiting plate 35 is arranged inside the connecting sleeve 2. The clamping convex blocks 33 are movably clamped on the connecting sleeve 2, the push plate 37 and the clamping convex blocks 33 are in movable contact, and an arc-shaped inclined surface is arranged on the side of the clamping convex blocks 33 away from the bolt body 1. The setting of the arc-shaped inclined surface can facilitate the push plate 37 to be clamped inside the adjacent clamping convex blocks 33.
[0031] Please refer to Figure 5 and Figure 6 , a limiting protrusion 34 is arranged on the outer side surface of the clamping convex block 33 along the axial direction of the connecting sleeve 2. The limiting protrusion 34 and the clamping protrusion 33 are both made of silicone rubber. The radial cross-section of the limiting protrusion 34 is a right trapezoid, and the inclined direction of the inclined surface of the adjacent limiting protrusions 34 is opposite to the spiral direction of the bolt body 1. A groove 38 is formed on the side of the connecting sleeve 2 away from the bolt body 1, and a return spring 36 is arranged inside the groove 38. The return spring 36 is movably sleeved on the connecting rod 31. The setting of the return spring 36 can improve the anti-vibration effect of the bolt.
[0032] In the initial state, due to the action of the return spring 36, a certain distance can be formed between the wear-increasing plate 32 and the corresponding end surface of the connecting sleeve 2. At this time, the limiting plate 35 fixed at the end of the connecting rod 31 is clamped outside the adjacent clamping convex blocks 33, so that the distance that the adjacent clamping convex blocks 33 protrude from the connecting sleeve 2 is reduced.
[0033] Working principle: For this kind of bolt that can achieve self-locking and earthquake-resistant and anti-loosening, in the initial state, due to the action of the return spring 36, a certain distance can be formed between the corresponding end faces of the wear-increasing plate 32 and the connecting sleeve 2. At this time, the limiting plate 35 fixed to the end of the connecting rod 31 is clamped outside the adjacent clamping protrusion 33, so that the distance that the adjacent clamping protrusion 33 protrudes from the connecting sleeve 2 is reduced; when the bolt is screwed into the interior of the fastener to be fastened, the bolt body 1 can drive the wear-increasing plate 32 to approach the fastener to be fastened and contact the fastener to be fastened; after the wear-increasing plate 32 contacts the fastener to be fastened, it will cause the wear-increasing plate 32 to move towards one side of the bolt body 1, and then drive the push plate 37 and the limiting plate 35 to move towards one side of the bolt body 1. When the push plate 37 moves, the adjacent clamping protrusions 33 move outwards at the same time. At this time, the clamping protrusions 33 abut against the hole groove of the fastener to be fastened, thereby further restricting the reverse rotation of the bolt; at this time, the limiting plate 35 disengages from the restriction on the adjacent clamping protrusion 33; through the settings of the clamping protrusion 33, the limiting protrusion 34 and the wear-increasing plate 32, the reverse rotation of the bolt can be effectively restricted, and then the bolt can be automatically locked, so that the bolt has the effect of anti-loosening.
[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A bolt capable of realizing self-locking and earthquake-resistant and anti-loosening, comprising a bolt body (1), characterized in that: The end of the bolt body (1) is threadedly connected with a connecting sleeve (2), and an anti-disengagement component (3) is arranged inside the connecting sleeve (2); The anti-disengagement component (3) includes a connecting rod (31), an abrasion-increasing plate (32) and a limiting plate (35). The connecting rod (31) is movably connected inside the connecting sleeve (2). The abrasion-increasing plate (32) and the limiting plate (35) are oppositely arranged on the connecting rod (31). The abrasion-increasing plate (32) is arranged outside the connecting sleeve (2). A pushing plate (37) is fixedly installed in the middle of the connecting rod (31). A clamping convex block (33) is annularly arranged on the outer side of the pushing plate (37). The clamping convex block (33) is movably clamped on the connecting sleeve (2). The pushing plate (37) and the clamping convex block (33) are in movable contact. A limiting protrusion (34) is arranged on the outer side surface of the clamping convex block (33) along the axial direction of the connecting sleeve (2). A groove (38) is opened on one side of the connecting sleeve (2) away from the bolt body (1). A return spring (36) is arranged inside the groove (38). The return spring (36) is movably sleeved on the connecting rod (31).
2. The self-locking earthquake-resistant and anti-loosening bolt according to claim 1, wherein: An arc-shaped inclined surface is arranged on one side of the clamping convex block (33) away from the bolt body (1).
3. The self-locking earthquake-resistant and anti-loosening bolt according to claim 1, characterized in that: The limiting plate (35) is movably clamped at the corresponding end of the adjacent clamping convex block (33), and the limiting plate (35) is arranged inside the connecting sleeve (2).
4. A bolt capable of achieving self-locking and earthquake-resistant and anti-loosening according to claim 1, characterized in that: The abrasion-increasing plate (32) and the connecting sleeve (2) are arranged at an interval, and the centers of the abrasion-increasing plate (32) and the connecting sleeve (2) are collinear.
5. A bolt capable of achieving self-locking and earthquake-resistant and anti-loosening according to claim 1, characterized in that: The limiting plate (35) and the bolt body (1) are arranged at an interval.
6. A bolt capable of achieving self-locking and earthquake-resistant and anti-loosening according to claim 1, characterized in that: Slots for the insertion of the clamping convex blocks (33) are annularly opened on the connecting sleeve (2).
7. A bolt capable of realizing self-locking and earthquake-resistant and anti-loosening according to claim 1, characterized in that: The clamping convex block (33) is arranged between the limiting plate (35) and the abrasion-increasing plate (32).
8. A bolt capable of realizing self-locking and earthquake-resistant and anti-loosening according to claim 1, characterized in that: The radial cross-section of the limiting protrusion (34) is a right trapezoid, and the inclined direction of the inclined surface of the adjacent limiting protrusions (34) is opposite to the spiral direction of the bolt body (1).