Anti-loose automobile nut assembly
Patent Information
- Application Number
- CN202522577218.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-12-04
AI Technical Summary
[0003]传统螺母在长期振动、温度变化及负载交变等复杂工况下，容易因螺纹副之间的微量滑移而逐渐松脱，进而导致连接失效，甚至引发安全事故，尤其是在底盘、悬挂等动态受力部件中，这种由微小松动积累形成的结构性破坏往往难以被察觉，具有较高的潜在风险
（1）先将螺杆穿过待固定工件，将螺母旋入螺杆并拧紧至规定扭矩，接着，将套环套入螺杆，使其沿螺杆外壁上移，并且同时保持多个弹性板与多个限位槽的位置相对应，套环顶部的多个弹性板在套筒的引导与保护下发生弹性变形，直至弹性板端部的锁定块与螺杆外壁限位槽内的锁定槽对齐，由于锁定块与锁定槽的接触端面均为三角形截面，在弹性恢复力的作用下，锁定块可顺利卡入对应的锁定槽内部，从而在轴向上限制套环与螺杆之间的相对位移，防止螺母在使用过程中出现松脱的情况，并且此时多个弹性板朝向外壁的一侧分别和与之对应的凸块外壁相贴合，需要取下螺母时，向上推动压板，带动多个与之连接的连杆以及连杆顶部连接的凸块上移，由于多个弹性板呈倾斜状，凸块上移时，挤压弹性板，使弹性板的顶部向远离螺母的方向移动，从而使锁定块从锁定槽中脱离，随后配合外圆环，使套环从螺杆上取下，再通过拧动螺母，将螺母从螺杆上取下，操作简便且解锁过程可靠，便于重复拆装与维护，实现了防松结构的一键式解锁，无需专用工具或复杂操作，尤其适用于需频繁检修或更换的汽车部件，在确保防松性能的同时兼顾了装配与维护的便利性。
Smart Images
Figure CN224859875U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive fastener technology, and more particularly to an anti-loosening automotive nut assembly. Background Technology
[0002] In automobile manufacturing, bolt and nut assemblies are critical connecting components, and their reliability directly affects the safety and stability of the entire vehicle structure. They are found in core components such as the chassis, engine, suspension, and body structure, playing a vital role in transmitting loads and maintaining structural integrity.
[0003] Traditional nuts are prone to gradually loosening due to minute slippage between the threaded pairs under complex working conditions such as long-term vibration, temperature changes and alternating loads, which can lead to connection failure and even safety accidents. This is especially true in dynamic stress-bearing components such as chassis and suspension, where structural damage caused by the accumulation of minute loosening is often difficult to detect and poses a high potential risk. Utility Model Content
[0004] The purpose of this application is to prevent the nut assembly from becoming loose.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A bolt head is included, with a screw fixedly connected to the bottom of the bolt head. Multiple limiting grooves are formed on the outer wall of the screw, and multiple locking grooves are formed on the inner wall of the multiple limiting grooves. A nut is threaded onto the outer wall of the screw, and a collar is fitted onto the outer wall of the screw. Multiple elastic plates are fixedly connected to the top of the collar, and a locking block is fixedly connected to the outer wall of the top of each elastic plate. The end of the locking block away from the elastic plate is inserted into the corresponding locking groove. Multiple protrusions are provided on the top of the collar, and connecting rods penetrating the collar are fixedly connected to the bottom of the multiple protrusions. Pressure plates are fixedly connected to the bottom of the multiple connecting rods, and a sleeve is fixedly connected to the top of the collar.
[0006] As a preferred embodiment, the locking groove and the locking block at the end away from the elastic plate have triangular cross-sections, the protrusion is semi-circular, and the top of the protrusion is in contact with the outer wall of the elastic plate facing the nut.
[0007] As another preferred embodiment, the plurality of pressure plates are evenly distributed in an array inside the collar, the sleeve is located at the top edge of the collar, and the plurality of elastic plates are all located inside the sleeve.
[0008] In a further preferred embodiment, an outer ring is fixedly connected to the outer wall of the collar, and the pressure plate is sleeved on the outer wall of the nut.
[0009] In a further preferred embodiment, the bolt head and the nut are located on opposite sides of the fixing surface, a first washer is provided between the nut and the fixing surface, and a second washer is provided between the nut and the collar.
[0010] Preferably, both the first washer and the second washer are made of stainless steel, and the first washer and the second washer are fitted onto the outer wall of the nut.
[0011] Compared with the prior art, the beneficial effects of this application are as follows: (1) First, pass the screw through the workpiece to be fixed, screw the nut into the screw and tighten it to the specified torque. Then, put the collar into the screw and move it up along the outer wall of the screw, while keeping the positions of multiple elastic plates and multiple limiting grooves corresponding. The multiple elastic plates at the top of the collar undergo elastic deformation under the guidance and protection of the sleeve until the locking block at the end of the elastic plate is aligned with the locking groove in the limiting groove of the outer wall of the screw. Since the contact end face of the locking block and the locking groove is a triangular section, under the action of elastic restoring force, the locking block can be smoothly inserted into the corresponding locking groove, thereby restricting the relative displacement between the collar and the screw in the axial direction, preventing the nut from loosening during use. At this time, the multiple elastic plates face the outer wall side. Do not allow the corresponding protrusion to fit against the outer wall. When the nut needs to be removed, push the pressure plate upward, which will move multiple connecting rods and the protrusions connected to the top of the connecting rods upward. Since multiple elastic plates are inclined, when the protrusions move upward, they squeeze the elastic plates, causing the top of the elastic plates to move away from the nut, thereby disengaging the locking block from the locking groove. Then, in conjunction with the outer ring, the collar is removed from the screw. Finally, by turning the nut, the nut is removed from the screw. The operation is simple and the unlocking process is reliable. It is easy to repeatedly disassemble and maintain, and realizes one-click unlocking of the anti-loosening structure without the need for special tools or complicated operations. It is especially suitable for automotive parts that need to be frequently inspected or replaced, ensuring anti-loosening performance while taking into account the convenience of assembly and maintenance. Attached Figure Description
[0012] Figure 1 This is a first-view schematic diagram of the overall structure of an anti-loosening automotive nut assembly.
[0013] Figure 2 This is a front plan view of an anti-loosening automotive nut assembly.
[0014] Figure 3 This is a second-view schematic diagram of the overall structure of an anti-loosening automotive nut assembly.
[0015] Figure 4 This is a schematic diagram of the collar and sleeve of an anti-loosening automotive nut assembly.
[0016] Figure 5 This is a schematic diagram of the internal structure of an anti-loosening automotive nut assembly.
[0017] Figure 6 For this type of anti-loosening automotive nut assembly Figure 5 Enlarged schematic diagram of structure A in the middle.
[0018] In the diagram: 1. Bolt head; 2. Screw; 3. Limiting groove; 4. Locking groove; 5. Nut; 6. Collar; 7. Elastic plate; 8. Locking block; 9. Protrusion; 10. Connecting rod; 11. Pressure plate; 12. Sleeve; 13. Outer ring; 14. First washer; 15. Second washer. Detailed Implementation
[0019] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0020] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.
[0021] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0022] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0023] like Figure 1-6The illustrated anti-loosening automotive nut assembly includes a bolt head 1, a screw 2 fixedly connected to the bottom of the bolt head 1, multiple limiting grooves 3 formed on the outer wall of the screw 2, multiple locking grooves 4 formed on the inner wall of the multiple limiting grooves 3, a nut 5 threadedly connected to the outer wall of the screw 2, a collar 6 sleeved on the outer wall of the screw 2, multiple elastic plates 7 fixedly connected to the top of the collar 6, a locking block 8 fixedly connected to the top outer wall of the elastic plate 7, the end of the locking block 8 away from the elastic plate 7 inserted into the corresponding locking groove 4, multiple protrusions 9 provided on the top of the collar 6, connecting rods 10 penetrating the collar 6 fixedly connected to the bottom of the multiple protrusions 9, pressure plates 11 fixedly connected to the bottom of the multiple connecting rods 10, a sleeve 12 fixedly connected to the top of the collar 6, and locking grooves. The cross-section of the end of the locking block 8 away from the elastic plate 7 is triangular. The protrusion 9 is semi-circular, and the top of the protrusion 9 is in contact with the outer wall of the elastic plate 7 facing the nut 5. Multiple pressure plates 11 are evenly distributed in an array inside the collar 6. The sleeve 12 is located at the top edge of the collar 6. Multiple elastic plates 7 are located inside the sleeve 12. An outer ring 13 is fixedly connected to the outer wall of the collar 6. The pressure plates 11 are sleeved on the outer wall of the nut 5. The bolt head 1 and the nut 5 are located on both sides of the fixed surface. A first washer 14 is provided between the nut 5 and the fixed surface. A second washer 15 is provided between the nut 5 and the collar 6. Both the first washer 14 and the second washer 15 are made of stainless steel. The first washer 14 and the second washer 15 are sleeved on the outer wall of the nut 5.
[0024] During assembly, first, thread the screw 2 through the workpiece to be fixed, screw the nut 5 into the screw 2 and tighten it to the specified torque. Then, slip the collar 6 onto the screw 2, allowing it to move upwards along the outer wall of the screw 2, while simultaneously maintaining the corresponding positions of multiple elastic plates 7 and multiple limiting grooves 3. Under the guidance and protection of the sleeve 12, the multiple elastic plates 7 at the top of the collar 6 undergo elastic deformation until the locking block 8 at the end of the elastic plate 7 aligns with the locking groove 4 in the limiting groove 3 on the outer wall of the screw 2. Since the contact end faces of the locking block 8 and the locking groove 4 are both triangular cross-sections, under the action of elastic restoring force, the locking block 8 can smoothly engage with the corresponding locking groove 4, thereby axially restricting the collar 6 and the screw 2. The relative displacement between them prevents the nut 5 from loosening during use. At this time, the multiple elastic plates 7 facing the outer wall of the nut 5 are respectively attached to the outer wall of the corresponding protrusion 9. When the nut 5 needs to be removed, push the pressure plate 11 upward, which will drive the multiple connecting rods 10 and the protrusion 9 connected to the top of the connecting rods 10 to move upward. Since the multiple elastic plates 7 are inclined, when the protrusion 9 moves upward, it squeezes the elastic plates 7, causing the top of the elastic plates 7 to move away from the nut 5, thereby causing the locking block 8 to disengage from the locking groove 4. Then, in conjunction with the outer ring 13, the collar 6 is removed from the screw 2. Finally, by turning the nut 5, the nut 5 is removed from the screw 2.
[0025] Working principle: During assembly, first, the screw 2 is passed through the workpiece to be fixed, and the nut 5 is screwed into the screw 2 and tightened to the specified torque. Then, the collar 6 is fitted onto the screw 2, causing it to move upward along the outer wall of the screw 2, while simultaneously maintaining the corresponding positions of multiple elastic plates 7 and multiple limiting grooves 3. Under the guidance and protection of the sleeve 12, the multiple elastic plates 7 at the top of the collar 6 undergo elastic deformation until the locking block 8 at the end of the elastic plate 7 aligns with the locking groove 4 in the limiting groove 3 on the outer wall of the screw 2. Since the contact end faces of the locking block 8 and the locking groove 4 are both triangular cross sections, under the action of elastic restoring force, the locking block 8 can smoothly engage with the corresponding locking groove 4, thereby axially restricting the collar 6 and the workpiece. The relative displacement between the screws 2 prevents the nut 5 from loosening during use. At this time, the multiple elastic plates 7 facing the outer wall of the nut 5 are respectively in contact with the outer wall of the corresponding protrusion 9. When the nut 5 needs to be removed, the pressure plate 11 is pushed upward, which drives the multiple connecting rods 10 and the protrusion 9 connected to the top of the connecting rods 10 to move upward. Since the multiple elastic plates 7 are inclined, when the protrusion 9 moves upward, it squeezes the elastic plates 7, causing the top of the elastic plates 7 to move away from the nut 5, thereby causing the locking block 8 to disengage from the locking groove 4. Then, in conjunction with the outer ring 13, the collar 6 is removed from the screw 2. Finally, by twisting the nut 5, the nut 5 is removed from the screw 2.
[0026] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. An anti-loosening automotive nut assembly, comprising a bolt head (1), characterized in that: The bottom of the bolt head (1) is fixedly connected to a screw rod (2). The outer wall of the screw rod (2) is provided with multiple limiting grooves (3). The inner wall of the multiple limiting grooves (3) is provided with multiple locking grooves (4). The outer wall of the screw rod (2) is threaded with a nut (5). The outer wall of the screw rod (2) is fitted with a collar (6). The top of the collar (6) is fixedly connected to multiple elastic plates (7). The top outer wall of the elastic plate (7) is fixedly connected to a locking block (8). The end of the locking block (8) away from the elastic plate (7) is inserted into the interior of the corresponding locking groove (4). The top of the collar (6) is provided with multiple protrusions (9). The bottom of the multiple protrusions (9) is fixedly connected to a connecting rod (10) that penetrates the collar (6). The bottom of the multiple connecting rods (10) is fixedly connected to a pressure plate (11). The top of the collar (6) is fixedly connected to a sleeve (12).
2. The anti-loosening automotive nut assembly as described in claim 1, characterized in that: The locking groove (4) and the locking block (8) are both triangular in cross-section at the end away from the elastic plate (7), the protrusion (9) is semi-circular, and the top of the protrusion (9) is in contact with the outer wall of the elastic plate (7) facing the nut (5).
3. The anti-loosening automotive nut assembly as described in claim 1, characterized in that: Multiple pressure plates (11) are evenly distributed in an array inside the collar (6), the sleeve (12) is located at the top edge of the collar (6), and multiple elastic plates (7) are located inside the sleeve (12).
4. The anti-loosening automotive nut assembly as described in claim 1, characterized in that: The outer wall of the collar (6) is fixedly connected to an outer ring (13), and the pressure plate (11) is sleeved on the outer wall of the nut (5).
5. The anti-loosening automotive nut assembly as described in claim 1, characterized in that: The bolt head (1) and the nut (5) are located on opposite sides of the fixing surface. A first washer (14) is provided between the nut (5) and the fixing surface, and a second washer (15) is provided between the nut (5) and the collar (6).
6. The anti-loosening automotive nut assembly as described in claim 5, characterized in that: The first washer (14) and the second washer (15) are both made of stainless steel. The first washer (14) and the second washer (15) are fitted onto the outer wall of the nut (5).