CN210240270U - Self-locking fastener - Google Patents
Self-locking fastener Download PDFInfo
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- CN210240270U CN210240270U CN201921248366.5U CN201921248366U CN210240270U CN 210240270 U CN210240270 U CN 210240270U CN 201921248366 U CN201921248366 U CN 201921248366U CN 210240270 U CN210240270 U CN 210240270U
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Abstract
The utility model relates to a self-locking fastener, which comprises a fastening seat, a T-shaped through hole which transversely penetrates through the fastening seat is arranged on the outer side wall of the fastening seat, a threaded hole is arranged on the upper surface of the fastening seat, a flat end holding screw is arranged in the threaded hole, a section of thread with shorter pitch is arranged on the thread at the outer end of the flat end holding screw, a ring groove is arranged on the upper surface of the fastening seat by taking the threaded hole as the center of circle, a fastening cap is arranged on the ring groove, the fastening cap is cylindrical, a cavity which is mutually matched with the ring groove and is also cylindrical is arranged in the fastening cap, the cavity extends to the end surface at one end of the fastening cap and forms an opening, a boss is fixedly connected on the inner wall of the side of the cavity, an external thread which is mutually matched with an internal thread is arranged on the outer side wall of the, the utility model discloses a simple structure has realized better auto-lock effect, has improved the fastening stability of fastener.
Description
Technical Field
The utility model relates to a fastener, concretely relates to self-locking firmware.
Background
Fasteners are used in a wide variety of industries where fastening of connections is required, such as in vehicles, construction machinery, agricultural machinery, manufacturing machinery, and the like. In practical application, some fastening occasions do not need to be frequently disassembled, and the undetachable anti-loosening scheme adopts modes such as welding, bonding or punching riveting to change detachable threaded connection into undetachable threaded connection. The anti-loosening scheme is troublesome to operate, has large workload, is easy to have the phenomena of poor self-locking effect and low fastening stability caused by misoperation, and thus needs to be improved.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a simple structure, auto-lock are effectual, fastening stability is high auto-lock fastener.
The technical scheme of the utility model is realized like this: a self-locking fastener comprising a fastener base, characterized in that: the outer side wall of the fastening seat is provided with a T-shaped through hole which transversely penetrates through the fastening seat, the upper surface of the fastening seat is provided with a threaded hole which vertically penetrates through the T-shaped through hole downwards, a flat-end fastening screw is arranged in the threaded hole, one end of the flat-end fastening screw is screwed into the threaded hole and then arranged in the threaded hole, the other end of the flat-end fastening screw is exposed outside, the end surface of one end, exposed outside, of the flat-end fastening screw is provided with a straight groove, the thread of one end, exposed outside, of the flat-end fastening screw is provided with a section of thread with a shorter pitch, the upper surface of the fastening seat is provided with an annular groove by taking the threaded hole as the center of a circle, the inner wall of one side, away from the threaded hole, of the annular groove is provided with an internal thread, the annular groove is provided with a fastening cap which is cylindrical, the fastening, the fastening cap is provided with a cross groove on the end face far away from one end of the opening, the cavity is fixedly connected with a boss on the inner wall far away from one side of the opening, an external thread matched with the internal thread is arranged on the outer side wall of the fastening cap, and the screwing direction of the external thread is opposite to that of the thread of the flat-end fastening screw.
By adopting the technical scheme, when a fastener is used, a workpiece to be fastened is inserted into the T-shaped through hole, then the flat-end fastening screw is gradually screwed in, when a section of thread with shorter pitch arranged on the flat-end fastening screw is screwed in the threaded hole, the thread in the threaded hole is damaged by different pitches, the damaged thread cannot be reused, the flat-end fastening screw cannot be screwed out, so that self-locking is naturally achieved after the flat-end fastening screw is abutted against the workpiece, after the flat-end fastening screw is screwed, one end of an opening of the fastening cap is aligned with the annular groove, the fastening cap is gradually screwed in the annular groove, due to different screwing directions, the screwing directions of the fastening cap and the flat-end fastening screw are also different, after the fastening cap is screwed, the lug boss is abutted against the end face of the flat-end fastening screw, when the flat-end fastening screw is loosened, due to different screwing directions, the flat-end fastening screw is screwed in the same direction, the fastening cap will restrict the lock screw back-out of flat end to realize locking effect, both the anti-loosening method of tang's screw thread, for prior art, the utility model discloses a better auto-lock effect has been realized to simple structure, has improved the fastening stability of fastener.
The utility model discloses further set up to: and a spring washer is fixedly connected to the lower surface of the boss.
Through adopting above-mentioned technical scheme, after screwing the locking cap, the boss compresses tightly the terminal surface to flush end holding screw with its fixed connection's spring washer, and spring washer is compressed and is produced the elastic force, and the elastic force counteracts in the locking cap, makes the locking cap produce an ascending power, has increased the frictional force between external screw thread and the internal thread contact surface, has further improved screw-thread fit's auto-lock effect.
The utility model discloses preferred is: the fastening cap is provided with a section of short thread with a thread pitch in the external thread of the outer wall of one side, far away from the fastening seat.
Through adopting above-mentioned technical scheme, at the in-process of fastening cap screw in ring channel, when the shorter screw thread of pitch reachs the ring channel internal thread, different pitches will destroy the ring channel internal thread, thereby the internal thread is destroyed the back fastening cap and will unable the back-screwing out realize the auto-lock, has further improved the auto-lock effect of fastener.
The utility model discloses preferred is: and an annular bulge is arranged on the end face of one end, far away from the straight groove, of the flat-end fastening screw.
Through adopting above-mentioned technical scheme, compressing tightly the back with the work piece, annular protrusion can increase the frictional force that compresses tightly the face, further promotes the fastening effect.
The utility model discloses preferred is: and anti-skid grains are arranged on the bottom surface of the T-shaped through hole.
Through adopting above-mentioned technical scheme, compressing tightly the back with the work piece, the frictional force that the anti-skidding line can further increase the face that compresses tightly, further promotion fastening effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a longitudinal sectional view of the present invention.
Fig. 3 is a top view of the fastening seat.
Fig. 4 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-4, the utility model discloses a self-locking fastener, including fastening seat 1 in the embodiment of the utility model: the outer side wall of the fastening seat 1 is provided with a T-shaped through hole 2 which transversely penetrates through the fastening seat, the upper surface of the fastening seat 1 is provided with a threaded hole 3 which vertically penetrates through the T-shaped through hole downwards, a flat-end fastening screw 4 is arranged in the threaded hole 3, one end of the flat-end fastening screw 4 is screwed into the threaded hole 3 and then arranged in the threaded hole 3, the other end of the flat-end fastening screw is exposed outside, the end face of the exposed end of the flat-end fastening screw 4 is provided with a straight groove, the thread of the exposed end of the flat-end fastening screw 4 is provided with a section of thread 5 with a shorter pitch, the upper surface of the fastening seat 1 is provided with a ring groove 6 by taking the threaded hole 3 as the center of a circle, the inner wall of the ring groove 6 far away from one side of the threaded hole 3 is provided with an inner thread 7, the ring groove 6 is provided with a fastening cap 8, the fastening, the cavity 9 extends to the terminal surface of fastening cap 8 one end and forms the opening, be provided with the cross recess on the terminal surface that fastening cap 8 kept away from opening one end, fixedly connected with boss 10 on the inner wall of opening one side is kept away from to cavity 9, be provided with on the lateral wall of fastening cap 8 and be used for the external screw thread 11 with internal thread 7 mutually supporting, external screw thread 11 revolves to the screw thread opposite with flat end holding screw 4.
By adopting the technical scheme, when a fastener is used, a workpiece to be fastened is inserted into the T-shaped through hole 2 and then the flat-end fastening screw 4 is gradually screwed in, when a section of thread 5 with a short thread pitch arranged on the flat-end fastening screw 4 is screwed into the threaded hole 3, the thread in the threaded hole 3 is damaged by different thread pitches, the damaged thread cannot be reused, the flat-end fastening screw 4 cannot be screwed out, so that self-locking is naturally achieved after the flat-end fastening screw 4 is abutted against the workpiece, after the flat-end fastening screw 4 is screwed, the annular groove 6 at one end of the opening of the fastening cap 8 is gradually screwed into the annular groove 6, due to different thread screwing directions, the screwing directions of the fastening cap 8 and the flat-end fastening screw 4 are also different, after the fastening cap 8 is screwed, the boss 10 is abutted against the end face of the flat-end fastening screw 4, and when the flat-end fastening screw 4 is loosened, because the screw is different to the soon, the not hard up screw of flush end holding screw 4 is not only the screw of fastening cap 8 to the soon, and fastening cap 8 will restrict flush end holding screw 4 and unscrew to realize locking effect not hard up, both tang's screw locking method, for prior art, the utility model discloses a better auto-lock effect has been realized to simple structure, has improved the fastening stability of fastener.
In the embodiment of the present invention: a spring washer 14 is fixedly connected to the lower surface of the boss 10.
Through adopting above-mentioned technical scheme, after screwing fastening cap 8, boss 10 compresses tightly the spring washer 14 rather than fixed connection to the terminal surface of flush end holding screw 4, and spring washer 14 is compressed and is produced the elastic force, and the elastic force counteracts in fastening cap 8, makes fastening cap 8 produce an ascending power, has increased the frictional force between external screw thread 11 and the internal thread 7 contact surface, has further improved screw-thread fit's auto-lock effect.
In the embodiment of the present invention: and a section of short-pitch thread 13 is arranged in the external thread of the outer wall of one side, far away from the fastening seat 1, of the fastening cap 8.
Through adopting above-mentioned technical scheme, at the in-process of fastening cap 8 screw in ring channel 6, when the short screw thread 13 of pitch reachd ring channel internal thread 7, different pitches will destroy ring channel internal thread 7, thereby internal thread 7 is destroyed the back fastening cap 8 and will unable back-spin out realize the auto-lock, has further improved the auto-lock effect of fastener.
In the embodiment of the present invention: and an annular bulge 12 is arranged on the end surface of one end, far away from the straight groove, of the flat-end fastening screw 4.
Through adopting above-mentioned technical scheme, compressing tightly the back with the work piece, annular bulge 12 can increase the frictional force that compresses tightly the face, further promotes the fastening effect.
In the embodiment of the present invention: and anti-skid grains 15 are arranged on the bottom surface of the T-shaped through hole 2.
Through adopting above-mentioned technical scheme, compressing tightly the back with the work piece, anti-skidding line 15 can further increase the frictional force that compresses tightly the face, further promotion fastening effect.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A self-locking fastener comprising a fastener base, characterized in that: the outer side wall of the fastening seat is provided with a T-shaped through hole which transversely penetrates through the fastening seat, the upper surface of the fastening seat is provided with a threaded hole which vertically penetrates through the T-shaped through hole downwards, a flat-end fastening screw is arranged in the threaded hole, one end of the flat-end fastening screw is screwed into the threaded hole and then arranged in the threaded hole, the other end of the flat-end fastening screw is exposed outside, the end surface of one end, exposed outside, of the flat-end fastening screw is provided with a straight groove, the thread of one end, exposed outside, of the flat-end fastening screw is provided with a section of thread with a shorter pitch, the upper surface of the fastening seat is provided with an annular groove by taking the threaded hole as the center of a circle, the inner wall of one side, away from the threaded hole, of the annular groove is provided with an internal thread, the annular groove is provided with a fastening cap which is cylindrical, the fastening, the fastening cap is provided with a cross groove on the end face far away from one end of the opening, the cavity is fixedly connected with a boss on the inner wall far away from one side of the opening, an external thread matched with the internal thread is arranged on the outer side wall of the fastening cap, and the screwing direction of the external thread is opposite to that of the thread of the flat-end fastening screw.
2. A self-locking fastener as defined in claim 1, wherein: and a spring washer is fixedly connected to the lower surface of the boss.
3. A self-locking fastener as defined in claim 1, wherein: the fastening cap is provided with a section of short thread with a thread pitch in the external thread of the outer wall of one side, far away from the fastening seat.
4. A self-locking fastener as defined in claim 1, wherein: and an annular bulge is arranged on the end face of one end, far away from the straight groove, of the flat-end fastening screw.
5. A self-locking fastener as defined in claim 1, wherein: and anti-skid grains are arranged on the bottom surface of the T-shaped through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921248366.5U CN210240270U (en) | 2019-08-02 | 2019-08-02 | Self-locking fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921248366.5U CN210240270U (en) | 2019-08-02 | 2019-08-02 | Self-locking fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240270U true CN210240270U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921248366.5U Active CN210240270U (en) | 2019-08-02 | 2019-08-02 | Self-locking fastener |
Country Status (1)
| Country | Link |
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| CN (1) | CN210240270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2734573C1 (en) * | 2020-03-16 | 2020-10-20 | Игнат Игоревич Иванов | Threaded joint |
| CN116581623A (en) * | 2023-05-31 | 2023-08-11 | 安费诺高速技术(南通)有限公司 | Machining and assembling method of anti-withdrawal connector assembly |
-
2019
- 2019-08-02 CN CN201921248366.5U patent/CN210240270U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2734573C1 (en) * | 2020-03-16 | 2020-10-20 | Игнат Игоревич Иванов | Threaded joint |
| CN116581623A (en) * | 2023-05-31 | 2023-08-11 | 安费诺高速技术(南通)有限公司 | Machining and assembling method of anti-withdrawal connector assembly |
| CN116581623B (en) * | 2023-05-31 | 2024-02-02 | 安费诺高速技术(南通)有限公司 | Machining and assembling method of anti-withdrawal connector assembly |
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