Novel self-fastening bolt structure

Abstract

The utility model provides a novel self-fastening bolt structure, which relates to the technical field of fastening structures, and comprises a screw main body, the front part of the screw main body is provided with a mounting end; a nut assembly is arranged at the joint of the screw main body and the mounting end in a sleeving manner, and the nut assembly is connected with the screw main body and the mounting end in a threaded manner; the rear half section of the screw body is sleeved with an adjusting ring, the inner bolt is unscrewed, the ratchet piece and the ratchet groove are matched with each other, the installation end is rotationally adjusted, contrast threads are formed by the installation end and the screw body, meanwhile, the positive locking nut and the back locking nut are locked, and therefore the fastening effect and the locking effect can be achieved to the maximum extent, and the service life of the screw is prolonged. The structure is more reasonable, and the problems that when an existing self-fastening bolt structure is used, although a positive locking nut and a back locking nut are used for conducting the self-locking process, the loosening phenomenon still occurs under the action of external force or self vibration, and then the self-fastening reliability of the self-fastening bolt structure is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening structures, in particular to a novel self-fastening bolt structure. Background Art

[0002] A self-fastening bolt is a special fastener. The design of the self-fastening bolt aims to provide a method for quickly and firmly fixing two or more components without additional tools, and this kind of bolt usually has self-tapping or self-locking functions.

[0003] For example, the application number: CN202022577158.9 discloses a self-fastening bolt structure, which includes: a fastening bolt and a nut. The fastening bolt is adapted to pass through the mating holes of at least two components to be connected and then be threadedly engaged with the nut; a tensioning spring piece is arranged between the fastening bolt and the nut, and after the fastening bolt and the nut are tightened in cooperation, the tensioning spring piece is adapted to be bent to fix the fastening bolt on the component to be connected through the tensioning spring piece. According to the self-fastening bolt structure of the embodiment of the utility model, not only can a better connection effect and a better fastening effect be achieved, but also a better disassembly effect can be achieved, with a simple structure and strong practicability.

[0004] When the existing self-fastening bolt structure is in use, although positive-locking nuts and reverse-locking nuts are used for self-locking, loosening still occurs under the action of external forces or its own vibration, thereby reducing the reliability of its self-fastening. Summary of the Utility Model

[0005] An embodiment of the present disclosure relates to a novel self-fastening bolt structure. By loosening the inner bolt, the ratchet member and the ratchet groove cooperate with each other, and the installation end is rotationally adjusted to form a reverse thread between the installation end and the screw body. At the same time, the positive-locking nut and the reverse-locking nut are locked, so that the fastening function and the locking function can be maximally exerted, and the structure is more reasonable.

[0006] In the first aspect of the present disclosure, a novel self-fastening bolt structure is provided, which specifically includes: a screw body, and an installation end is provided at the front of the screw body; a nut assembly is sleeved at the connection between the screw body and the installation end, and the nut assembly is connected to the screw body and the installation end by means of threads; an adjusting ring is sleeved at the rear half section position of the screw body.

[0007] In at least some embodiments, an inner bolt is provided at the central position of the installation end, and the inner bolt is rotatably connected to the installation end, and a ratchet member is provided at the rear end of the installation end.

[0008] In at least some embodiments, a ratchet groove is provided at the front end of the screw body, and the ratchet groove matches the ratchet member, and a threaded socket is opened at the central position of the front end of the screw body.

[0009] In at least some embodiments, when the screw body is connected to the mounting end, the ratchet member of the mounting end is inserted into the ratchet groove of the screw body, and the inner bolt is fixedly connected to the threaded socket by means of threads.

[0010] In at least some embodiments, a nut is provided at the rear end of the screw body, and a support ring is provided at the connection between the screw body and the nut. There are two limiting chutes on the outer peripheral surface of the rear half of the screw body, and the two limiting chutes are distributed symmetrically. A positioning groove is provided at the rear end of the limiting chute, and the limiting chute and the positioning groove form an "L" - shaped structure.

[0011] In at least some embodiments, the nut assembly includes a positive - locking nut, a reverse - locking nut, an elastic gasket, and a connecting pipe. The positive - locking nut and the reverse - locking nut are respectively connected to the screw body and the mounting end by means of threads. An elastic gasket is provided at the rear end of the reverse - locking nut, and a connecting pipe is provided at the front end of the positive - locking nut. The elastic gasket is sleeved on the connecting pipe, and the elastic gasket is supported between the positive - locking nut and the reverse - locking nut.

[0012] In at least some embodiments, a compression spring is provided at the rear end of the adjusting ring, and a contact block is provided at the front end of the adjusting ring. The contact blocks are distributed in an annular array. There are two limiting blocks on the inner peripheral surface of the adjusting ring, and the two limiting blocks are distributed symmetrically.

[0013] In at least some embodiments, the limiting block of the adjusting ring is slidably connected to the limiting chute of the screw body, and the compression spring is supported between the adjusting ring and the support ring. When the adjusting ring and the screw body are in a locked state, the limiting block of the adjusting ring is engaged with the positioning groove.

[0014] The present utility model provides a novel self - tightening bolt structure, which has the following beneficial effects:

[0015] In the present utility model, when tightening with the screw body, by loosening the inner bolt, the ratchet member and the ratchet groove cooperate with each other, and the mounting end is rotationally adjusted to form a reverse thread between the mounting end and the screw body. At the same time, the positive - locking nut and the reverse - locking nut are tightened, so that the fastening effect and the locking effect can be maximally exerted, and the structure is more reasonable.

[0016] In addition, an adjusting ring is provided in the present utility model. The adjusting ring can slide along the limiting chute, and by using the elastic action of the compression spring, the supporting force with the locking end face is adjusted. At the same time, in cooperation with the contact block contacting the locking end face, it can ensure sufficient frictional force during the fastening process, thereby ensuring the stability and safety of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0018] The accompanying drawings in the following description only relate to some embodiments of the present utility model and do not limit the present utility model.

[0019] In the accompanying drawings:

[0020] Figure 1 A schematic structural diagram of the overall axonometric perspective of the present application is shown;

[0021] Figure 2 A schematic structural diagram of the split state of the screw body and the mounting end of the present application is shown;

[0022] Figure 3 A schematic structural diagram of the split state of the mounting end and the inner bolt of the present application is shown;

[0023] Figure 4 A schematic structural diagram of the exploded state of the nut assembly of the present application is shown;

[0024] Figure 5 A schematic structural diagram of the adjusting ring of the present application is shown.

[0025] List of reference numerals:

[0026] 1, screw body; 101, mounting end; 1011, inner bolt; 1012, ratchet member; 102, ratchet groove; 103, threaded socket; 104, nut; 105, support ring; 106, limit sliding groove; 107, positioning groove;

[0027] 2, nut assembly; 201, positive locking nut; 202, reverse locking nut; 203, elastic gasket; 204, connecting pipe;

[0028] 3, adjusting ring; 301, compression spring; 302, contact block; 303, limit clamping block. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0030] Embodiment 1: Please refer to Figures 1 to 5 :

[0031] The present utility model proposes a novel self - tightening bolt structure, including: a screw rod main body 1, and an installation end head 101 is provided at the front part of the screw rod main body 1; a nut assembly 2 is sleeved at the connection position between the screw rod main body 1 and the installation end head 101, and the nut assembly 2 is connected to the screw rod main body 1 and the installation end head 101 by means of threads; an adjusting ring 3 is sleeved at the rear half - section position of the screw rod main body 1;

[0032] An inner bolt 1011 is provided at the central position of the installation end head 101, and the inner bolt 1011 is rotatably connected to the installation end head 101. A ratchet member 1012 is provided at the rear end of the installation end head 101.

[0033] In the embodiment of the present disclosure, as Figures 2 to 4 shown, a ratchet groove 102 is provided at the front end of the screw rod main body 1, and the ratchet groove 102 matches the ratchet member 1012. A threaded socket 103 is opened at the central position of the front end of the screw rod main body 1;

[0034] When the screw rod main body 1 and the installation end head 101 are in a connected state, the ratchet member 1012 of the installation end head 101 is inserted into the ratchet groove 102 of the screw rod main body 1, and the inner bolt 1011 is fixedly connected to the threaded socket 103 by means of threads;

[0035] A nut 104 is provided at the rear end of the screw rod main body 1, and a support ring 105 is provided at the connection position between the screw rod main body 1 and the nut 104. Two limiting sliding grooves 106 are provided on the outer peripheral surface of the rear half - section of the screw rod main body 1, and the two limiting sliding grooves 106 are distributed symmetrically. A positioning groove 107 is provided at the rear end of the limiting sliding groove 106, and the limiting sliding groove 106 and the positioning groove 107 form an "L" - shaped structure;

[0036] The nut assembly 2 includes a positive - locking nut 201, a reverse - locking nut 202, an elastic gasket 203 and a connecting pipe 204. The positive - locking nut 201 and the reverse - locking nut 202 are respectively connected to the screw rod main body 1 and the installation end head 101 by means of threads. An elastic gasket 203 is provided at the rear end of the reverse - locking nut 202. A connecting pipe 204 is provided at the front end of the positive - locking nut 201, and the elastic gasket 203 is sleeved on the connecting pipe 204, and the elastic gasket 203 is supported between the positive - locking nut 201 and the reverse - locking nut 202. When tightening with the screw rod main body 1, by loosening the inner bolt 1011, the ratchet member 1012 and the ratchet groove 102 cooperate with each other, and the installation end head 101 is rotationally adjusted to form a reverse thread between the installation end head 101 and the screw rod main body 1, and at the same time, the positive - locking nut 201 and the reverse - locking nut 202 are tightened.

[0037] Embodiment 2, on the basis of Embodiment 1, as Figure 5As shown in the figure, a compression spring 301 is provided at the rear end of the adjusting ring 3, and a contact block 302 is provided at the front end of the adjusting ring 3. The contact blocks 302 are distributed in an annular array. Two limiting blocks 303 are provided on the inner peripheral surface of the adjusting ring 3, and the two limiting blocks 303 are symmetrically distributed.

[0038] The limiting block 303 of the adjusting ring 3 is slidably connected to the limiting chute 106 of the screw main body 1, and the compression spring 301 is supported between the adjusting ring 3 and the support ring 105. When the adjusting ring 3 and the screw main body 1 are in a locked state, the limiting block 303 of the adjusting ring 3 is engaged with the positioning groove 107. In the present utility model, an adjusting ring 3 is provided. The adjusting ring 3 can slide along the limiting chute 106 and utilize the elastic action of the compression spring 301 to adjust the supporting force on the locking end face. At the same time, in cooperation with the contact block 302 contacting the locking end face, it can ensure sufficient frictional force during the fastening process.

[0039] The working principle of this embodiment: During use, when tightening with the screw main body 1, by loosening the inner bolt 1011, the ratchet member 1012 and the ratchet groove 102 cooperate with each other, and the mounting end 101 is rotated and adjusted so that the mounting end 101 and the screw main body 1 form a reverse thread, and at the same time, the positive locking nut 201 and the reverse locking nut 202 are tightened. When the adjusting ring 3 and the screw main body 1 are in a locked state, the limiting block 303 of the adjusting ring 3 is engaged with the positioning groove 107, and the adjusting ring 3 can slide along the limiting chute 106 and utilize the elastic action of the compression spring 301 to adjust the supporting force on the locking end face. At the same time, in cooperation with the contact block 302 contacting the locking end face, it can ensure sufficient frictional force during the fastening process.

[0040] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A new self-tightening bolt structure, characterized in that: include: A screw body, wherein a mounting end is provided at the front of the screw body; a nut assembly is provided at the connection between the screw body and the mounting end, and the nut assembly is connected to the screw body and the mounting end by means of threads; an adjusting ring is provided at the rear half of the screw body; An inner bolt is arranged at the center of the mounting end, and the inner bolt is rotatably connected to the mounting end, and a ratchet piece is arranged at the rear end of the mounting end.

2. A novel self-tightening bolt structure according to claim 1, characterized in that: A ratchet groove is arranged at the front end of the screw body, and the ratchet groove matches the ratchet piece, and a threaded sleeve opening is arranged at the center position of the front end of the screw body.

3. A novel self-tightening bolt structure according to claim 1, characterized in that: When the screw body is in a connected state with the mounting end, the ratchet piece of the mounting end is inserted into the ratchet groove of the screw body, and the inner bolt is fixedly connected with the threaded sleeve through a threaded manner.

4. A novel self-tightening bolt structure according to claim 1, characterized in that: A nut is provided at the rear end of the screw body, and a support ring is provided at the connection between the screw body and the nut. Two limiting slide grooves are provided on the outer circumference of the rear half of the screw body, and the two limiting slide grooves are distributed in a symmetrical manner. A positioning groove is provided at the rear end of the limiting slide groove, and the limiting slide groove and the positioning groove form an "L"-shaped structure.

5. A novel self-tightening bolt structure according to claim 1, characterized in that: The nut assembly includes a positive locking nut, a reverse locking nut, an elastic sleeve and a connecting pipe. The positive locking nut and the reverse locking nut are respectively connected to the screw body and the mounting end through threads. An elastic sleeve is provided at the rear end of the reverse locking nut, and a connecting pipe is provided at the front end of the positive locking nut. The elastic sleeve is sleeved on the connecting pipe, and the elastic sleeve is supported between the positive locking nut and the reverse locking nut.

6. A novel self-tightening bolt structure according to claim 1, characterized in that: A compression spring is provided at the rear end of the adjusting ring, a contact block is provided at the front end of the adjusting ring, and the contact blocks are distributed in a ring array. Two limit blocks are provided on the inner circumference of the adjusting ring, and the two limit blocks are distributed in a symmetrical manner.

7. A novel self-tightening bolt structure according to claim 6, characterized in that: The limiting block of the adjusting ring is slidably connected with the limiting sliding groove of the screw body, and the compression spring is supported between the adjusting ring and the supporting ring. When the adjusting ring and the screw body are in a locked state, the limiting block of the adjusting ring is engaged with the positioning groove.

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