CN209990757U - Anti-loosening special-shaped combined bolt - Google Patents
Anti-loosening special-shaped combined bolt Download PDFInfo
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- CN209990757U CN209990757U CN201920372816.5U CN201920372816U CN209990757U CN 209990757 U CN209990757 U CN 209990757U CN 201920372816 U CN201920372816 U CN 201920372816U CN 209990757 U CN209990757 U CN 209990757U
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Abstract
A locking type special-shaped combined bolt comprises a bolt head and a bolt thread part which are arranged in a columnar manner, wherein a bolt taking hole is formed in the bolt head, a bolt taking wall is fixedly installed in the bolt taking hole, an internal thread is tapped in the bolt taking hole and above the bolt taking wall, a bolt taking hole sealing bolt matched with the internal thread for use is arranged in the bolt taking hole, a plurality of steel bar inserting holes penetrating through the bolt head are further formed in the bolt head, a plurality of sections of external threads are tapped on the bolt thread part, and a deformation interval of the external threads is formed between every two adjacent sections of the external threads; through set up the bolt in the bolt head and take out the hole, when needs take out this locking type dysmorphism combination formula bolt from by the fastener, only need with the instrument catch on the bolt take out the wall and to this locking type dysmorphism combination formula bolt installation direction's opposite direction pulling can take out this locking type dysmorphism combination formula bolt from by the fastener, structural design is reasonable, and fastening performance is good.
Description
Technical Field
The utility model relates to a bolt, in particular to locking type dysmorphism combination formula bolt.
Background
The bolt is a fastener of a conventional mechanical part, is divided into a standard part and a special-shaped part according to production standards, the bolt of the special-shaped part has no national standard size, and is generally used for special purposes in special occasions, such as places which are used for being wet, full of oil stains or frequently vibrated, after the conventional bolt achieves a fastening state, as moisture or oil stains slowly infiltrate into a threaded part of the bolt, the bolt is loosened to a great extent through long-time slight vibration, so that the fastening part and the fastened part are loosened, and the fastening effect is weakened.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to prior art not enough, provide a locking type dysmorphism combination formula bolt that fastening is effectual, locking taking off.
The technical problem to be solved by the utility model is realized by the following technical proposal, comprising a bolt head part and a bolt thread part;
the bolt head is provided with a bolt taking hole, a bolt taking wall is fixedly arranged in the bolt taking hole, internal threads are punched in the bolt taking hole and above the bolt taking wall, a bolt taking hole sealing bolt matched with the internal threads is arranged in the bolt taking hole, and the bolt head is also provided with a plurality of steel bar inserting holes penetrating through the bolt head;
a plurality of sections of external threads are tapped on the bolt thread part, and the deformation interval of the external threads is formed between every two adjacent sections of external threads.
The utility model discloses the technical problem that solve can also be realized through following technical scheme, above a locking type dysmorphism combination formula bolt, the bolt take out hole diameter and set up for 40% of bolt head diameter, the bolt take out the degree of depth of hole and account for 60% setting of bolt head total length.
The utility model discloses the technical problem that solve can also realize through following technical scheme, above a locking type dysmorphism combination formula bolt be provided with the inclination and be 45 and length is 1 cm's chamfer on the upper end of bolt head, lower extreme border.
The utility model discloses the technical problem that solve can also realize through following technical scheme, above a locking type dysmorphism combination formula bolt, the bolt take out the transversal setting of personally submitting the annular form of wall.
The utility model discloses the technical problem that solve can also be realized through following technical scheme, above a locking type dysmorphism combination formula bolt, the billet patchhole on the screw head is provided with 8 altogether, and 8 billet patchholes use screw head axis as the benchmark, and the annular array sets up on the screw head, and the aperture of every 1 billet patchhole is the 2.5% setting of screw head diameter.
The utility model discloses the technical problem that solve can also be realized through following technical scheme, above a locking type dysmorphism combination formula bolt, the distance between the axis of billet patchhole and the axis of bolt head is 90% setting of external screw thread diameter.
The utility model discloses the technical problem that solve can also be realized through following technical scheme, above a locking type dysmorphism combination formula bolt, billet patchhole slope set up on the bolt head, the axis contained angle of billet patchhole and bolt head be 7 settings.
The utility model discloses the technical problem that solve can also be realized through following technical scheme, above a locking type dysmorphism combination formula bolt, the external screw thread on the bolt thread portion is equipped with 2 sections, and interval between 2 sections external screw threads accounts for the 8% setting of bolt thread portion overall length.
Compared with the prior art, the utility model has the advantages as follows:
(1) through arranging the bolt taking hole at the head part of the bolt, when the anti-loosening special-shaped combined bolt needs to be taken out of the fastened piece, the bolt taking hole positioned in the bolt taking hole and above the bolt taking wall is screwed down to seal the bolt, an expansion bolt or other tools which can conveniently extend into the bolt taking hole and hook the bolt taking wall extend into the bolt taking hole and are rotationally pulled, and the anti-loosening special-shaped combined bolt is pulled out of the fastened piece, so that the use is convenient;
(2) through the steel bar insertion hole arranged on the bolt head, when the anti-loosening special-shaped combined bolt is installed in the bolt hole of the fastened piece, a steel bar or a strip-shaped workpiece with hardness larger than the strength of the bolt is placed in the steel bar insertion hole, and the strip-shaped workpiece extending out of the bolt head is knocked into the steel bar insertion hole, so that the strip-shaped workpiece destroys the external thread on the threaded part of the bolt and the internal thread in the threaded hole of the fastened piece, namely the anti-loosening special-shaped combined bolt cannot be easily unscrewed or loosened by external force vibration or oil stain and the like, and the anti-loosening effect is good;
(3) the steel bar insertion holes can be obliquely formed in the bolt head, and the arrangement helps strip-shaped workpieces to more easily destroy external threads on the threaded part of the bolt and internal threads in the threaded hole of the fastened piece, so that the anti-loose special-shaped combined bolt is more firmly fastened on the fastened piece and is good in fastening effect.
Drawings
Fig. 1 is an exploded view of the structure of the present invention;
fig. 2 is a schematic top view of the bolt head according to the present invention;
FIG. 3 is a schematic view of the present invention in use;
fig. 4 is a schematic view of another mechanism of the present invention.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings so as to facilitate the further understanding of the present invention by those skilled in the art, and do not limit the right thereto.
Embodiment 1, referring to fig. 1 to 4, an anti-loosening type special-shaped combination bolt includes a bolt head 1 and a bolt thread part 2;
a bolt taking hole 3 is formed in the bolt head 1, a bolt taking wall 4 is fixedly installed in the bolt taking hole 3, internal threads are tapped in the bolt taking hole 3 and above the bolt taking wall 4, a bolt taking hole sealing bolt 5 matched with the internal threads for use is arranged in the bolt taking hole 3, and a plurality of steel bar inserting holes 6 penetrating through the bolt head 1 are further formed in the bolt head 1;
a plurality of sections of external threads are tapped on the bolt thread part 2, and a deformation interval 7 of the external threads is formed between every two adjacent sections of the external threads. The arrangement of the deformation interval 7 is favorable for the space required by deformation after the external thread on the bolt thread part 2 and the internal thread in the threaded hole on the fastened part are damaged, namely, the bolt thread part 2 at the position of the deformation interval 7 is not tapped with the external thread;
the bolt extraction hole closes any bolt that the bolt 5 can use in cooperation with the upper internal thread of the bolt extraction wall 4.
Embodiment 2, the locking type special-shaped combined bolt of embodiment 1, the diameter of the bolt taking hole 3 is 40% of the diameter of the bolt head 1, and the depth of the bolt taking hole 3 is 60% of the total length of the bolt head 1.
Embodiment 3, the locking type special-shaped combination bolt described in embodiment 1, wherein the upper end and the lower end edge of the bolt head 1 are provided with a chamfer angle with a slope of 45 ° and a length of 1 cm.
The utility model discloses a locking type dysmorphism combination formula bolt, its theory of use as follows: screwing the bolt taking hole closing bolt 5 in the bolt taking hole 3 into the bolt taking hole 3, rotating the bolt taking hole closing bolt 5 again to screw the anti-loosening special-shaped combined bolt into a threaded hole which is opened in advance on a fastened piece, inserting a steel bar or a strip-shaped workpiece 8 with hardness greater than the strength of the bolt into a steel bar insertion hole 6 on the bolt head 1, knocking the strip-shaped workpiece 8 extending out of the bolt head 1 into the steel bar insertion hole 6, wherein the workpiece 8 can damage external threads on the bolt threaded part 2 and internal threads in the threaded hole on the fastened piece, so that the anti-loosening special-shaped combined bolt cannot be easily screwed down or loosened by external vibration or oil stain and the like, the steel bar insertion hole 6 can be obliquely opened on the bolt head 1, and the arrangement is helpful for the strip-shaped workpiece 8 to more easily damage the external threads on the bolt threaded part 2 and the internal threads in the threaded hole on the fastened piece, make more firm fastening of this locking type dysmorphism combination formula bolt on by the fastener, improve the fastening effect of this locking type dysmorphism combination formula bolt, when needs take out this locking type dysmorphism combination formula bolt from the threaded hole on by the fastener, only need screw down to be located bolt take out hole 3, bolt take out hole closing bolt 5 of the top of wall 4 is taken out to the bolt, with expansion bolts or other be convenient for stretch into bolt take out hole 3 in and can catch on bolt take out wall 4 the instrument stretch into bolt take out hole 3 in and rotatory pulling, on pulling out by the fastener this locking type dysmorphism combination formula bolt, high durability and convenient use.
Claims (8)
1. The utility model provides a locking type dysmorphism combination formula bolt which characterized in that: the bolt comprises a bolt head and a bolt thread part which are arranged in a columnar shape;
the bolt head is provided with a bolt taking hole, a bolt taking wall is fixedly arranged in the bolt taking hole, internal threads are punched in the bolt taking hole and above the bolt taking wall, a bolt taking hole sealing bolt matched with the internal threads is arranged in the bolt taking hole, and the bolt head is also provided with a plurality of steel bar inserting holes penetrating through the bolt head;
a plurality of sections of external threads are tapped on the bolt thread part, and the deformation interval of the external threads is formed between every two adjacent sections of external threads.
2. The anti-loosening special-shaped combined bolt as claimed in claim 1, wherein: the diameter of the bolt taking hole is 40% of the diameter of the head of the bolt, and the depth of the bolt taking hole accounts for 60% of the total length of the head of the bolt.
3. The anti-loosening special-shaped combined bolt as claimed in claim 1, wherein: the upper end edge and the lower end edge of the bolt head are provided with a chamfer angle with the inclination of 45 degrees and the length of 1 cm.
4. The anti-loosening special-shaped combined bolt as claimed in claim 1, wherein: the cross section of the bolt taking-out wall is arranged in a ring shape.
5. The anti-loosening special-shaped combined bolt as claimed in claim 1, wherein: the number of the steel bar inserting holes in the bolt head is 8, the 8 steel bar inserting holes are arranged on the bolt head in an annular array mode by taking the axis of the bolt head as a reference, and the aperture of each 1 steel bar inserting hole is 2.5% of the diameter of the bolt head.
6. The anti-loosening special-shaped combined bolt as claimed in claim 1, wherein: the distance between the axis of the steel bar insertion hole and the axis of the bolt head is set to be 90% of the diameter of the external thread.
7. The anti-loosening special-shaped combined bolt as claimed in claim 1, wherein: the steel bar inserting holes are obliquely formed in the bolt head, and the included angle between the steel bar inserting holes and the axis of the bolt head is 7 degrees.
8. The anti-loosening special-shaped combined bolt as claimed in claim 1, wherein: the external screw thread on bolt screw portion is equipped with 2 sections, and the interval between 2 sections external screw threads accounts for 8% setting of bolt screw portion overall length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372816.5U CN209990757U (en) | 2019-03-22 | 2019-03-22 | Anti-loosening special-shaped combined bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372816.5U CN209990757U (en) | 2019-03-22 | 2019-03-22 | Anti-loosening special-shaped combined bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209990757U true CN209990757U (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920372816.5U Active CN209990757U (en) | 2019-03-22 | 2019-03-22 | Anti-loosening special-shaped combined bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209990757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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
- 2019-03-22 CN CN201920372816.5U patent/CN209990757U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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