Reverse thread nut limiting structure

Abstract

The utility model discloses a left-hand thread nut limiting structure. The bolt installation structure comprises a top shell, an installation head arranged on the surface of the right side of the top shell, a limiting assembly arranged on the left side of the installation head and the left side of the top shell, and a lock catch assembly arranged on the surface of the left side of the limiting assembly. The diameter size of the part, provided with the second threads, of the bolt is smaller than the diameter size of the inner diameter of the threaded ring, and therefore the bolt continues to penetrate through the threaded ring leftwards. The screw rotates to drive the sliding block to stably slide outwards in the sliding groove through engagement of threads on the outer wall, the sliding block is inserted into the annular clamping groove, the nut is locked again through mutual matching of clamping threads arranged on the outer wall of the sliding block and clamping threads arranged in the clamping groove, mistaken touch deflection of the nut is avoided, and the limiting stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of limiting structure technology, specifically a reverse-thread nut limiting structure. Background Technology

[0002] A bolt is a common fastener consisting of a head and a threaded shank. It requires a nut to function. Bolts are widely used to connect and fasten different components with through holes. There is a gap between the threads of the nut and the bolt, allowing the nut thread to rotate freely along the bolt thread. To increase the contact area between the nut and the connected component and to prevent the nut from loosening due to vibration, a washer is usually placed on the shank between the component and the nut.

[0003] The existing patent (publication number CN210106370U) discloses a fastening system, a component to be assembled, and a self-locking nut with reverse threads. The self-locking nut with reverse threads can be pre-tightened onto the component to be assembled by connecting the component to the component with an external thread that is opposite to the direction of the internal thread. After assembling the component, only the fastening bolt needs to be tightened to achieve a reliable fastening connection of parts in a confined space.

[0004] However, existing nut locking structures have some problems in use: 1. Current nut locking structures use two nuts with different threads installed in one direction for fixation. However, if one nut loosens, the second nut will also loosen, failing to achieve mutual restraint between the opposite nuts, ultimately causing the bolt to loosen. 2. Existing mounting nuts only rely on the meshing between threads for locking. If the threads strip, the nut cannot be locked at all, reducing the effectiveness of the nut's locking mechanism. Utility Model Content

[0005] The purpose of this invention is to provide a reverse-thread nut limiting structure to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a top shell, a mounting head disposed on the right side surface of the top shell, a limiting component disposed on the mounting head and the left side of the top shell, and a locking component disposed on the left side surface of the limiting component;

[0007] The limiting component includes a first slot inside the mounting head, in which a bolt can be detachably installed. A threaded ring is provided on the left side wall of the first slot. A first thread that cooperates with the threaded ring is provided on the outer side of the center of the bolt. A second slot is provided inside the left side of the top shell, in which a nut can be detachably installed. A second thread that cooperates with the nut is provided on the outer wall of the left end of the bolt.

[0008] As a further embodiment of this utility model: the locking assembly includes an inner groove opened at the center of the left side of the nut, a first bevel gear is provided on the inner wall of the left side of the inner groove, a knob is externally connected to the left end of the first bevel gear, and a second bevel gear is provided on the inner walls of the upper and lower sides of the inner groove to cooperate with the first bevel gear.

[0009] As a further improvement of this utility model, a sleeve is fitted around the right end of the bolt.

[0010] As a further improvement of this utility model, the pattern of the first thread is opposite to that of the second thread.

[0011] As a further embodiment of this utility model: the inner groove is symmetrically provided with sliding grooves on the upper and lower outer sides, a screw is installed inside the sliding groove, a slider is fitted on the outer wall of the screw, and a slot is provided on the side wall of the second groove to cooperate with the slider.

[0012] As a further improvement of this utility model, the cross-sectional dimensions of the groove match the cross-sectional dimensions of the slider.

[0013] As a further improvement of this utility model, the rotating end of the screw is connected to the rotating end of the second bevel gear.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When the bolt needs to be installed, the bolt is first inserted from the right side to the left of the first slot. The diameter of a portion of the second thread on the bolt is smaller than the inner diameter of the nut ring, so the bolt continues to penetrate the nut ring to the left. When the first thread on the bolt surface releases the nut ring, the bolt is fixed inside the first slot by engaging with the thread on the nut ring. The nut is then inserted from the left side to the right of the second slot. When the right end of the nut contacts the left side of the bolt, the second thread on the bolt engages with the nut, causing the nut to engage to the right and be installed outside the left end of the bolt. Through the opposite threads of the first and second threads, the bolt becomes increasingly tighter with the reverse-thread nut as it retracts, preventing the reverse-thread nut from loosening. The bolt is stably and securely installed inside the top shell, achieving a firm installation.

[0016] 2. When the nut is installed on the outside of the left end of the bolt, turning the knob will drive the first bevel gear connected to it to rotate. The rotation of the first bevel gear will drive the second bevel gears on the upper and lower sides to rotate through the meshing of the outer wall teeth. The rotation of the second bevel gear will drive the screw connected to it to rotate. The rotation of the screw will drive the slider to slide outward stably in the groove through the meshing of the outer wall threads, so that the slider is inserted into the annular groove. The locking pattern on the outer wall of the slider and the locking pattern inside the groove cooperate with each other to lock the installation of the nut again, avoiding accidental deflection of the nut itself and improving the stability of the limit. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the limiting component and the locking component according to an embodiment of the present utility model;

[0019] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged view of part A in the diagram;

[0020] Figure 4 This is an embodiment of the present utility model. Figure 2 A magnified view of part B in the diagram.

[0021] In the diagram: 1. Top shell; 2. Mounting head; 301. First slot; 302. Bolt; 303. Sleeve; 304. Threaded ring; 305. First thread; 306. Second slot; 307. Nut; 308. Second thread; 401. Inner groove; 402. First bevel gear; 403. Knob; 404. Second bevel gear; 405. Slide groove; 406. Screw; 407. Slider; 408. Slot. Detailed Implementation

[0022] To facilitate the solution of the problem, this utility model provides a reverse-thread nut limiting structure. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] like Figures 1 to 4As shown, this embodiment provides a reverse-thread nut limiting structure, including a top shell 1, a mounting head 2 disposed on the right side surface of the top shell 1, a limiting component disposed on the left side of the mounting head 2 and the top shell 1, and a locking component disposed on the left side surface of the limiting component.

[0025] The limiting component includes a first slot 301 inside the mounting head 2, in which a bolt 302 is detachably installed. A threaded ring 304 is provided on the left side wall of the first slot 301. A first thread 305 that mates with the threaded ring 304 is provided on the outer center of the bolt 302. A second slot 306 is provided inside the left side of the top shell 1, in which a nut 307 is detachably installed. A second thread 308 that mates with the nut 307 is provided on the outer wall of the left end of the bolt 302. Through the first thread 305 and the second thread 308 with opposite threads, the bolt 302 becomes tighter and tighter with the reverse-threaded nut 307 as it retracts, preventing the reverse-threaded nut 307 from loosening. The limiting component is stably installed inside the top shell 1, achieving a secure installation.

[0026] Example 2

[0027] In addition to all the technical features in Embodiment 1, this embodiment also includes: the locking assembly includes an inner groove 401 opened at the center of the left side of the nut 307, a first bevel gear 402 is provided on the inner wall of the left side of the inner groove 401, a knob 403 is connected to the outer left end of the first bevel gear 402, and second bevel gears 404 that cooperate with the first bevel gear 402 are provided on the inner walls of the upper and lower sides of the inner groove 401. The rotation of the first bevel gear 402 drives the second bevel gears 404 on the upper and lower sides to rotate through the meshing of the outer wall teeth. The rotation of the second bevel gears 404 drives the screw 406 connected to it to rotate. The rotation of the screw 406 drives the slider 407 to slide stably outward in the slide groove 405 through the meshing of the outer wall threads, thereby achieving efficient locking.

[0028] Furthermore, a sleeve 303 is fitted on the outside of the right end of the bolt 302, and the bolt 302 can be rotated by twisting the sleeve 303.

[0029] Furthermore, the pattern of the first thread 305 is opposite to that of the second thread 308. Through the first thread 305 and the second thread 308 with opposite threads, the bolt 302 becomes tighter and tighter with the reverse thread nut 307 as it retracts.

[0030] Furthermore, the inner groove 401 has symmetrically provided sliding grooves 405 on the upper and lower outer sides. A screw 406 is installed inside the sliding groove 405. A slider 407 is fitted on the outer wall of the screw 406. The second groove 306 has a slot 408 on its side wall that cooperates with the slider 407, so that the slider 407 is inserted into the annular slot 408. The locking pattern on the outer wall of the slider 407 cooperates with the locking pattern inside the slot 408.

[0031] As a further improvement of this utility model: the cross-sectional dimensions of the slide groove 405 match the cross-sectional dimensions of the slider 407, causing the slider 407 to slide stably outward within the slide groove 405, so that the slider 407 is inserted into the annular slot 408, making the locking process more stable.

[0032] As a further improvement of this utility model: the rotating end of the screw 406 is connected to the rotating end of the second bevel gear 404. The rotation of the second bevel gear 404 drives the screw 406 connected to it to rotate, making the locking process more convenient.

[0033] Working principle: When bolt 302 needs to be installed, it is first inserted from the right side to the left of the first slot 301. A portion of the diameter of the second thread 308 on bolt 302 is smaller than the inner diameter of the threaded ring 304, allowing bolt 302 to continue penetrating the threaded ring 304 to the left. When the first thread 305 on the surface of bolt 302 releases the threaded ring 304, the bolt 302 is fixed inside the first slot 301 by engaging with the threaded ring 304. Nut 307 is then inserted from the left side to the right of the second slot 306. When the right end of nut 307 contacts the left side of bolt 302, the second thread 308 on bolt 302 engages with nut 307, causing nut 307 to engage to the right and be installed outside the left end of bolt 302. Finally, bolt 302 is secured by the opposing first thread 305 and second thread 308. When retracting, the screw nut 307 tightens more and more, preventing it from coming loose. The stable limit is installed inside the top shell 1, ensuring a secure installation. After the nut 307 is installed on the outside of the left end of the bolt 302, turning the knob 403 rotates the first bevel gear 402 connected to it. The rotation of the first bevel gear 402, through the meshing of the outer wall teeth, drives the second bevel gears 404 on both sides to rotate. The rotation of the second bevel gears 404 drives the screw 406 connected to it to rotate. The rotation of the screw 406, through the meshing of the outer wall threads, drives the slider 407 to slide stably outward in the groove 405, allowing the slider 407 to insert into the annular groove 408. The engagement of the grooves on the outer wall of the slider 407 and the grooves inside the groove 408 locks the nut 307 in place again, preventing accidental deflection of the nut 307 and improving the stability of the limit.

[0034] 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.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reverse-thread nut limiting structure, characterized in that: Includes a top shell (1), a mounting head (2) disposed on the right side surface of the top shell (1), a limiting component disposed on the left side of the mounting head (2) and the top shell (1), and a locking component disposed on the left side surface of the limiting component; The limiting component includes a first slot (301) inside the mounting head (2), a bolt (302) is detachably installed inside the first slot (301), a threaded ring (304) is provided on the left side wall of the first slot (301), a first thread (305) that cooperates with the threaded ring (304) is provided on the outer side of the center of the bolt (302), a second slot (306) is provided inside the left side of the top shell (1), a nut (307) is detachably installed inside the second slot (306), and a second thread (308) that cooperates with the nut (307) is provided on the outer wall of the left end of the bolt (302).

2. The reverse-thread nut limiting structure according to claim 1, characterized in that: The locking assembly includes an inner groove (401) opened at the center of the left side of the nut (307), a first bevel gear (402) is provided on the inner wall of the left side of the inner groove (401), a knob (403) is connected to the outer left end of the first bevel gear (402), and a second bevel gear (404) is provided on the inner walls of the upper and lower sides of the inner groove (401) to cooperate with the first bevel gear (402).

3. The reverse-thread nut limiting structure according to claim 1, characterized in that: The right end of the bolt (302) is fitted with a sleeve (303).

4. The reverse-thread nut limiting structure according to claim 1, characterized in that: The pattern of the first thread (305) is opposite to that of the second thread (308).

5. The reverse-thread nut limiting structure according to claim 2, characterized in that: The inner groove (401) has symmetrical sliding grooves (405) on the upper and lower sides. A screw (406) is installed inside the sliding groove (405). A slider (407) is fitted on the outer wall of the screw (406). The second groove (306) has a slot (408) on its side wall that cooperates with the slider (407).

6. The reverse-thread nut limiting structure according to claim 5, characterized in that: The cross-sectional dimensions of the groove (405) match the cross-sectional dimensions of the slider (407).

7. The reverse-thread nut limiting structure according to claim 5, characterized in that: The rotating end of the screw (406) is connected to the rotating end of the second bevel gear (404).

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