A slotted self-locking check nut
By designing a slotted self-locking anti-loosening nut, and utilizing a limiting plate and an inner and outer conical surface extrusion structure, the problem of nut loosening is solved, and the mechanical limiting and stable connection of the nut are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN AIERNUO AVIATION METAL EQUIP CO LTD
- Filing Date
- 2025-09-29
- Publication Date
- 2026-07-24
AI Technical Summary
In mechanical equipment, nuts may loosen due to vibration or impact, and existing technologies cannot effectively limit their mechanical movement, posing a safety hazard.
A slotted self-locking anti-loosening nut is designed. The limiting plates of the main nut and the auxiliary nut cooperate with the limiting groove to restrict the circumferential rotation of the nut. Combined with the inner and outer conical surface extrusion grooves, it achieves a tight grip and prevents the nut from loosening.
It effectively prevents nuts from loosening, improves the stability of fasteners, and avoids safety accidents.
Smart Images
Figure CN224550598U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fastener installation, and in particular to a slotted self-locking anti-loosening nut. Background Technology
[0002] Bolts and nuts are commonly used to fasten parts of mechanical equipment. However, in actual operation, due to the high intensity of mechanical equipment operation, the parts are easily affected by factors such as vibration or impact, which can easily cause the nuts to loosen. This may lead to failure of the bolt-nut connection or even cause a safety accident.
[0003] In existing technologies, some methods involve adding a washer between the nut and the component, increasing the friction on the nut by tightening the nut and squeezing the washer, thereby preventing loosening. However, such methods do not mechanically limit the nut's movement in the circumferential direction and still require optimization. Utility Model Content
[0004] In view of the above problems, this utility model provides a slotted self-locking anti-loosening nut, the purpose of which is to mechanically limit the main nut and the auxiliary nut to prevent the nut from loosening.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A slotted self-locking anti-loosening nut is provided, comprising: a main nut and a secondary nut, both threadedly connected to a bolt; a limiting member, passing through the bolt and positioned between the main nut and the secondary nut; a clamping member, located on the limiting member near the secondary nut, for the secondary nut to press against and thus clamp the bolt; a first limiting plate and a second limiting plate, both disposed on the limiting member; a first limiting groove formed in the main nut for the first limiting plate to enter; and a second limiting groove formed in the secondary nut for the second limiting plate to enter.
[0006] Furthermore, it also includes: a clamping component, disposed on the secondary nut; an inner conical surface, disposed within the clamping component; an outer conical surface, disposed on the clamping component; and several functional grooves, parallel to the radial direction of the screw, opened on the limiting component; wherein, the outer conical surface can press the functional grooves when it enters the inner conical surface.
[0007] Furthermore, the second limiting groove is parallel to the axial direction of the screw and is formed on the clamping component.
[0008] Furthermore, four first limiting pieces are symmetrically arranged on the limiting component, and two second limiting pieces are symmetrically arranged on the limiting component.
[0009] Furthermore, a countersunk hole is provided on the main nut for the limiting component to enter, and the first limiting groove is connected to the countersunk hole.
[0010] The beneficial effects of this utility model are as follows: In this utility model, a clamping component is provided, which can clamp the limiting component onto the screw and restrict the circumferential rotation of the clamping component; a first limiting plate and a second limiting plate are provided on the clamping component, which can respectively enter the first limiting groove and the second limiting groove to mechanically limit the main nut and the auxiliary nut, thereby restricting the circumferential rotation tendency of the main nut and the auxiliary nut, completing self-locking of the main nut and the auxiliary nut, and preventing the nuts from loosening. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the installation of the anti-loosening nut provided in an embodiment of this application.
[0012] Figure 2 This is an internal cross-sectional view of the anti-loosening nut provided in an embodiment of this application.
[0013] Figure 3 This is a top view of the main nut provided in an embodiment of this application.
[0014] Figure 4 This is a top view of the limiting component provided in an embodiment of this application.
[0015] Figure 5 This is a schematic diagram of the clamping component installed on the secondary nut according to an embodiment of this application.
[0016] Among them, 1. main nut; 11. mounting countersunk hole; 2. auxiliary nut; 3. screw; 4. limiting component; 5. clamping component; 51. outer conical surface; 52. functional groove; 61. first limiting piece; 62. second limiting piece; 71. first limiting groove; 72. second limiting groove; 8. clamping component; 81. inner conical surface. Detailed Implementation
[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0018] Reference Figure 1 and Figure 2 As shown in the figure, this application discloses a slotted self-locking anti-loosening nut, including: a main nut 1 and a secondary nut 2, both of which are threadedly connected and installed on a bolt; a limiting member 4, which passes through a screw rod 3 and is located between the main nut 1 and the secondary nut 2; a clamping member 5, which is disposed on the side of the limiting member 4 near the secondary nut 2, for the secondary nut 2 to press against it, thereby clamping the screw rod 3; a first limiting piece 61 and a second limiting piece 62, both of which are disposed on the limiting member 4; a first limiting groove 71, which is formed in the main nut 1, for the first limiting piece 61 to enter; and a second limiting groove 72, which is formed in the secondary nut 2, for the second limiting piece 62 to enter.
[0019] In practical use, the bolt is passed through the component to be fastened, the main nut 1 is tightened on the bolt, the limiting component 4 is passed through the bolt, and the first limiting piece 61 is placed into the first limiting groove 71; then the secondary nut 2 is tightened, and during the tightening process, the secondary nut 2 presses against the clamping component 5 until the clamping component 5 is tightly installed on the bolt. Then, the worker manually bends the second limiting piece 62 and puts the second limiting piece 62 into the second limiting groove 72.
[0020] In this utility model, a clamping component 5 is provided, which can clamp the limiting component 4 onto the screw 3 and restrict the circumferential rotation of the clamping component 5; a first limiting piece 61 and a second limiting piece 62 are provided on the clamping component 5, which can respectively enter the first limiting groove 71 and the second limiting groove 72 to mechanically limit the main nut 1 and the auxiliary nut 2, thereby restricting the circumferential rotation tendency of the main nut 1 and the auxiliary nut 2, and completing self-locking of the main nut 1 and the auxiliary nut 2 to prevent the nuts from loosening.
[0021] Reference Figure 1 , Figure 2 and Figure 5 As shown, it also includes: a clamping component 8, which is disposed on the secondary nut 2; an inner conical surface 81, which is disposed inside the clamping component 8; an outer conical surface 51, which is disposed on the clamping component 5; and several functional grooves 52, which are parallel to the radial direction of the screw 3 and are opened on the limiting component 4; wherein, the outer conical surface 51 can squeeze the functional grooves 52 when it enters the inner conical surface 81.
[0022] During use, as the secondary nut 2 is tightened, the inner conical surface 81 can move along the axial direction of the screw 3 until the inner conical surface 81 presses against the outer conical surface 51, thereby squeezing the functional groove 52 to clamp the clamping component 5 onto the screw 3, thus achieving the purpose of restricting the circumferential rotation of the clamping component 5.
[0023] Specifically, the second limiting groove 72 is parallel to the axial direction of the screw 3 and is formed on the clamping component 8.
[0024] Reference Figure 4 As shown, four first limiting pieces 61 are symmetrically arranged on the limiting component 4, and two second limiting pieces 62 are symmetrically arranged on the limiting component 4; the two first limiting pieces 61 and the four second limiting pieces 62 work together to restrict the rotation of the main nut 1 and the auxiliary nut 2, thereby improving the anti-loosening stability.
[0025] Reference Figure 3 As shown, a countersunk hole 11 is provided on the main nut 1 for the limiting component 4 to enter, and the first limiting groove 71 is connected to the countersunk hole 11.
[0026] Specifically, the length of the first limiting piece 61 is greater than that of the second limiting piece 62. After the main nut 1 is tightened, the limiting component 4 is passed through the screw 3 and placed in the mounting countersunk hole 11. The four first limiting pieces 61 and the two second limiting pieces 62 are respectively aligned and placed in the six first limiting grooves 71 of the main nut 1. Then, the auxiliary nut 2 is tightened to ensure that the two second limiting grooves 72 are aligned with the two second limiting pieces 62 respectively. The clamping component 5 is clamped and installed on the screw 3. Finally, the worker uses needle-nose pliers to bend the two second limiting pieces 62 into the second limiting grooves 72.
[0027] It is worth mentioning that the clamping component 8 can be welded onto the secondary nut 2, and the first limiting piece 61 and the second limiting piece 62 can both be made of stainless steel and welded onto the limiting component 4.
[0028] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the machine equivalents of the claims of the present invention, the present invention also intends to include these modifications and modifications.
Claims
1. A slotted self-locking anti-loosening nut, characterized in that, include: Both the main nut (1) and the auxiliary nut (2) are installed on the bolt via threaded connection; The limiting component (4) is installed on the screw (3) and is located between the main nut (1) and the secondary nut (2); The clamping component (5) is located on the side of the limiting component (4) near the secondary nut (2) for the secondary nut (2) to press against it, thereby clamping the screw (3); The first limiting piece (61) and the second limiting piece (62) are both disposed on the limiting component (4); The first limiting groove (71) is opened on the main nut (1) for the first limiting piece (61) to enter; The second limiting groove (72) is opened on the secondary nut (2) for the second limiting piece (62) to enter.
2. The slotted self-locking anti-loosening nut according to claim 1, characterized in that, Also includes: A clamping component (8) is mounted on the secondary nut (2); An inner conical surface (81) is disposed within the clamping component (8); The outer conical surface (51) is disposed on the clamping component (5); Several functional grooves (52) are opened on the limiting member (4) in the radial direction of the parallel screw (3); wherein the outer conical surface (51) enters the inner conical surface (81) and can squeeze the functional groove (52).
3. The slotted self-locking anti-loosening nut according to claim 2, characterized in that, The second limiting groove (72) is parallel to the axial direction of the screw (3) and is opened on the clamping component (8).
4. The slotted self-locking anti-loosening nut according to claim 1, characterized in that, Four first limiting pieces (61) are symmetrically arranged on the limiting component (4), and two second limiting pieces (62) are symmetrically arranged on the limiting component (4).
5. The slotted self-locking anti-loosening nut according to claim 1, characterized in that, A countersunk hole (11) is provided on the main nut (1) for the limiting component (4) to enter, and the first limiting groove (71) is connected to the countersunk hole (11).