A spring tab anti-loosening fastener assembly

Abstract

The utility model mainly relates to the technical field of fastener, specifically relates to a spring sheet type anti-loose fastener assembly. Including nut body and with its bottom integral moulding screw rod part, the screw rod part is equipped with the anti-loose sleeve detachable installation in the bottom of nut body, the inside of anti-loose sleeve is equipped with a annular cavity, is provided with a movable ring in annular cavity and can move along the axial direction, the top of movable ring abuts and has dish spring, the other end of dish spring is fixed in the top of annular cavity, the bottom of movable ring coaxially connects and has the compression ring of smaller radius, and the compression ring extends to the bottom end of anti-loose sleeve from the movable cavity of annular cavity bottom communication, is equipped with the arc -shaped guide slot of extending along the circumference on the outer peripheral wall of movable ring, and the top of one end of arc -shaped guide slot is communicated with the vertical guide slot of extending axially, and a locking slider is slidably arranged in arc -shaped guide slot and vertical guide slot.

Description

Technical Field

[0001] This utility model mainly relates to the field of fastener technology, specifically to a spring-loaded anti-loosening fastener assembly. Background Technology

[0002] In the field of mechanical connections, threaded fasteners such as bolts and nuts are widely used due to their ease of assembly and disassembly and reliable connection. However, the vibration, impact, and temperature changes that equipment experiences during long-term operation can easily lead to a decrease in the preload between threaded pairs, resulting in loose connections and potentially causing equipment failure or safety hazards.

[0003] To address this issue, the industry commonly employs the method of adding elastic elements to maintain preload. One typical solution is to insert a wing-shaped spring between the nut and the mounting surface. This solution utilizes the continuous and stable reverse elastic force generated when the wing-shaped spring is compressed to dynamically compensate for the attenuation of the preload, keeping the bolt connection in a "tensioned" state and effectively preventing loosening.

[0004] However, this existing technology has a significant drawback: when installing bolts or nuts, the operator must apply additional force to overcome the initial reaction force of the disc spring in order to fully compress it into the working position. This process makes the installation operation quite laborious, increasing not only the operator's workload but also affecting assembly efficiency to some extent.

[0005] Therefore, there is an urgent need for a new type of anti-loosening fastener assembly that can effectively solve the problem of laborious installation while retaining the advantages of elasticity and anti-loosening. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model: This utility model provides a spring-loaded anti-loosening fastener assembly to solve the technical problems existing in the background art.

[0007] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a spring-loaded anti-loosening fastener assembly, comprising a nut body and a screw portion integrally formed with its bottom, wherein an anti-loosening sleeve that can be detachably installed on the bottom of the nut body is fitted on the screw portion; The anti-loosening sleeve has an annular cavity inside, and a movable ring that can move axially is provided in the annular cavity. The top of the movable ring abuts against a disc-shaped spring, and the other end of the disc-shaped spring is fixed to the top of the annular cavity. A smaller radius clamping ring is coaxially connected to the bottom of the movable ring, and the clamping ring extends from the movable cavity connected to the bottom of the annular cavity to the bottom end of the anti-loosening sleeve. The outer peripheral wall of the movable ring is provided with an arc-shaped guide groove extending circumferentially. One end of the arc-shaped guide groove is connected to an axially extending vertical guide groove. A locking slider is slidably disposed in the arc-shaped guide groove and the vertical guide groove.

[0008] Furthermore, an operating lug is fixedly provided on the outer side of the locking slider. The operating lug passes through the circumferential guide groove opened on the side wall of the anti-loosening sleeve and extends to its outside. The upper and lower sides of the inner wall of the circumferential guide groove are provided with arc-shaped guide rails that are consistent with its trajectory. The upper and lower sides of the operating lug are provided with guide grooves that slide in cooperation with the arc-shaped guide rails.

[0009] Furthermore, the arc-shaped guide groove and its corresponding vertical guide groove and locking slider are provided in multiple sets and are evenly distributed along the circumference of the movable ring.

[0010] Furthermore, a mounting sleeve is coaxially fixed to the top of the anti-loosening sleeve. The mounting sleeve cooperates with the mounting groove provided at the bottom of the nut body. The inner wall of the mounting sleeve is provided with a first internal thread, and the inner wall of the mounting groove is provided with a second internal thread that cooperates with the first internal thread.

[0011] Furthermore, an annular sealing groove is provided on the bottom ring surface of the clamping ring, and an elastic sealing ring is embedded in the annular sealing groove.

[0012] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: the anti-loosening sleeve is fitted onto the outside of the screw part and installed to the bottom of the nut body. The screw part is screwed into the corresponding mounting hole until the bottom end of the anti-loosening sleeve is in close contact with the mounting surface. At this time, the locking slider is located in the arc-shaped guide groove, and its upper and lower sides are constrained by the groove wall, which restricts the axial movement of the movable ring in the annular cavity. The disc-shaped spring cannot apply an effective force to the movable ring.

[0013] When the locking slider slides along the arc-shaped guide groove to the end and enters the vertical guide groove, the movable ring is released from axial constraint. At this time, the elastic restoring force of the disc-shaped spring pushes the movable ring, causing the clamping ring to press tightly against the mounting surface, forming a continuous elastic clamping effect and achieving reliable anti-loosening.

[0014] Compared to the existing technology that directly compresses the spring, this solution eliminates the need to overcome the spring's reaction force during installation, making the operation more effortless and convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the operating lug and circumferential guide groove of this utility model; Figure 3This is a cross-sectional view of the anti-loosening sleeve of this utility model; Figure 4 This is an exploded structural diagram of the locking slider, arc-shaped guide groove, and vertical guide groove of this utility model.

[0016] Figure label: 1. Nut body; 101. Mounting groove; 102. Second internal thread; 2. Screw part; 3. Anti-loosening sleeve; 301. Annular cavity; 302. Movable cavity; 303. Circumferential guide groove; 304. Arc-shaped guide rail; 4. Movable ring; 401. Arc-shaped guide groove; 402. Vertical guide groove; 5. Disc-shaped spring; 6. Compression ring; 601. Annular sealing groove; 7. Locking slider; 701. Operating lug; 702. Guide groove; 8. Mounting sleeve; 801. First internal thread; 9. Elastic sealing ring. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0021] See attached document Figures 1-4 A spring-loaded anti-loosening fastener assembly includes a nut body 1 and a screw part 2 integrally formed with its bottom. An anti-loosening sleeve 3 that can be detachably installed on the bottom of the nut body 1 is fitted on the screw part 2. The anti-loosening sleeve 3 has an annular cavity 301 inside. A movable ring 4 that can move axially is provided in the annular cavity 301. The top of the movable ring 4 abuts against a disc-shaped spring 5. The other end of the disc-shaped spring 5 is fixed to the top of the annular cavity 301. A smaller-radius clamping ring 6 is coaxially connected to the bottom of the movable ring 4. The clamping ring 6 extends from the movable cavity 302 connected to the bottom of the annular cavity 301 to the bottom end of the anti-loosening sleeve 3. The outer peripheral wall of the movable ring 4 is provided with an arc-shaped guide groove 401 extending circumferentially. One end of the arc-shaped guide groove 401 is connected to an axially extending vertical guide groove 402. A locking slider 7 is slidably disposed in the arc-shaped guide groove 401 and the vertical guide groove 402.

[0022] In this embodiment, the anti-loosening sleeve 3 is fitted onto the outside of the screw part 2 and installed to the bottom of the nut body 1. It is then screwed into the screw part 2 into the corresponding mounting hole until the bottom end of the anti-loosening sleeve 3 is tightly attached to the mounting surface. At this time, the locking slider 7 is located in the arc-shaped guide groove 401, and its upper and lower sides are constrained by the groove wall, thereby restricting the axial movement of the movable ring 4 in the annular cavity 301. The disc-shaped spring 5 cannot apply an effective force to the movable ring 4. When the locking slider 7 is pushed to slide along the arc-shaped guide groove 401 to its end and enter the vertical guide groove 402, the axial constraint of the movable ring 4 is released. At this time, the elastic restoring force of the disc-shaped spring 5 acts on the movable ring 4, pushing the clamping ring 6 to press tightly against the mounting surface, forming a continuous elastic clamping effect, and achieving a reliable anti-loosening effect. Compared with the structure of directly compressing the spring in the prior art, this solution does not need to overcome the spring reaction force during the installation process, making the operation more labor-saving and convenient.

[0023] An operating lug 701 is fixedly provided on the outer side of the locking slider 7. The operating lug 701 passes through the circumferential guide groove 303 opened on the side wall of the anti-loosening sleeve 3 and extends to its outside. The upper and lower sides of the inner wall of the circumferential guide groove 303 are provided with arc-shaped guide rails 304 that are consistent with its trajectory. The upper and lower sides of the operating lug 701 are provided with guide grooves 702 that slide in cooperation with the arc-shaped guide rails 304.

[0024] In this embodiment, by manually moving the operating lug 701 to slide it along the circumferential guide groove 303, the locking slider 7 can be driven to move smoothly within the arc-shaped guide groove 401, thereby achieving the switching of the locking state.

[0025] The arc-shaped guide groove 401 and its corresponding vertical guide groove 402 and locking slider 7 are provided in multiple sets and are evenly distributed along the circumference of the movable ring 4. The multiple sets of locking can make the force distribution on the movable ring 4 more balanced, effectively prevent uneven load, and improve the stability and reliability of the anti-loosening sleeve 3.

[0026] A mounting sleeve 8 is coaxially fixed to the top of the anti-loosening sleeve 3. The mounting sleeve 8 cooperates with the mounting groove 101 provided at the bottom of the nut body 1. The inner wall of the mounting sleeve 8 is provided with a first internal thread 801, and the inner wall of the mounting groove 101 is provided with a second internal thread 102 that cooperates with the first internal thread 801.

[0027] In this embodiment, during assembly, the mounting sleeve 8 is aligned with the mounting groove 101, and the anti-loosening sleeve 3 is rotated to reliably install the anti-loosening sleeve 3 onto the nut body 1 through the engagement of the first internal thread 801 and the second internal thread 102. This split structure not only facilitates assembly, disassembly and maintenance, but also effectively reduces the overall processing and manufacturing difficulty.

[0028] An annular sealing groove 601 is provided on the bottom ring surface of the clamping ring 6. An elastic sealing ring 9 is embedded in the annular sealing groove 601. The elastic sealing ring 9 can generate elastic deformation during the clamping process. On the one hand, it increases the actual contact area with the mounting surface and avoids indentation or damage to the mounting surface due to excessive pressure. On the other hand, it can also play a certain role in sealing and vibration reduction.

[0029] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0030] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A spring-loaded anti-loosening fastener assembly, characterized in that: It includes a nut body (1) and a screw part (2) integrally formed with its bottom, and a locking sleeve (3) that can be detachably installed on the bottom of the nut body (1) is fitted on the screw part (2). The anti-loosening sleeve (3) has an annular cavity (301) inside. A movable ring (4) that can move along the axial direction is provided in the annular cavity (301). The top of the movable ring (4) abuts against a disc-shaped spring (5). The other end of the disc-shaped spring (5) is fixed to the top of the annular cavity (301). A smaller-radius clamping ring (6) is coaxially connected to the bottom of the movable ring (4). The clamping ring (6) extends from the movable cavity (302) connected to the bottom of the annular cavity (301) to the bottom end of the anti-loosening sleeve (3). The outer peripheral wall of the movable ring (4) is provided with an arc-shaped guide groove (401) extending in the circumferential direction. One end of the arc-shaped guide groove (401) is connected to an axially extending vertical guide groove (402). A locking slider (7) is slidably disposed in the arc-shaped guide groove (401) and the vertical guide groove (402).

2. The spring-loaded anti-loosening fastener assembly according to claim 1, characterized in that: An operating lug (701) is fixedly provided on the outside of the locking slider (7). The operating lug (701) passes through the circumferential guide groove (303) opened on the side wall of the anti-loosening sleeve (3) and extends to its outside. The upper and lower sides of the inner wall of the circumferential guide groove (303) are provided with arc-shaped guide rails (304) that are consistent with its trajectory. The upper and lower sides of the operating lug (701) are provided with guide grooves (702) that slide with the arc-shaped guide rails (304).

3. The spring-loaded anti-loosening fastener assembly according to claim 1, characterized in that: The arc-shaped guide groove (401) and its corresponding vertical guide groove (402) and locking slider (7) are provided in multiple sets and are evenly distributed along the circumference of the movable ring (4).

4. The spring-loaded anti-loosening fastener assembly according to claim 1, characterized in that: The top of the anti-loosening sleeve (3) is coaxially fixed with an installation sleeve (8). The installation sleeve (8) cooperates with the installation groove (101) provided at the bottom of the nut body (1). The inner wall of the installation sleeve (8) is provided with a first internal thread (801), and the inner wall of the installation groove (101) is provided with a second internal thread (102) that cooperates with the first internal thread (801).

5. A spring-loaded anti-loosening fastener assembly according to claim 1, characterized in that: The bottom ring of the compression ring (6) has an annular sealing groove (601) and an elastic sealing ring (9) is embedded in the annular sealing groove (601).

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