CN215409670U - Anti-loosening and anti-dropping bolt and anti-backing nut matched with same - Google Patents
Anti-loosening and anti-dropping bolt and anti-backing nut matched with same Download PDFInfo
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- CN215409670U CN215409670U CN202121523945.3U CN202121523945U CN215409670U CN 215409670 U CN215409670 U CN 215409670U CN 202121523945 U CN202121523945 U CN 202121523945U CN 215409670 U CN215409670 U CN 215409670U
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Abstract
The utility model discloses a locking and anti-drop bolt and a matched anti-drop nut thereof, which comprise the locking and anti-drop bolt and the anti-drop nut, wherein the locking and anti-drop bolt comprises a bolt head, a screw and a thread screwing part, a wedge-shaped anti-drop structure is arranged on the screw, anti-slip teeth are arranged on the bolt head, and the anti-slip teeth are protruded towards the screw; the anti-back nut comprises a nut body, and a flange face and an anti-back blank holder are arranged on the nut body. The utility model can reduce the conditions of bolt locking and nut thread sliding, the locking is easy to disassemble, even if the flange nut and the screw are in fatigue fracture failure, the screw head can not fall into the working cavity of the piston, the later maintenance cost of the air compressor can be effectively reduced, and the utility model is suitable for narrow installation structure environment.
Description
Technical Field
The utility model belongs to the technical field of fasteners, and particularly relates to an anti-loose and anti-drop bolt and an anti-drop nut matched with the same.
Background
The existing bolt is a fastener composed of a head part and a screw rod, and is matched with a nut and used for fastening and connecting two parts with through holes. Many times, the installation space of some parts is limited, the bolt head needs to sink into the part and must not exceed the part assembly surface, the subassembly that has assembled is vertical assembly again to other parts simultaneously, especially the bolt head corresponds the cylinder hole of piston motion, the whole tensile strength of bolt and nut step down after long-term operation, or receive operational environment's cold and hot impact to produce fatigue failure, cause screw rod department fracture, the bolt head falls into in the cylinder hole of piston motion, cause the air compressor machine piston damage, serious lead to the complete machine to damage completely.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide an anti-loosening and anti-dropping bolt and an anti-dropping nut matched with the anti-loosening and anti-dropping bolt.
The utility model is realized by the following technical scheme:
the anti-loosening and anti-dropping bolt comprises a bolt head, a screw rod and a thread screwing part, wherein the screw rod is formed by extending the top surface of the bolt head to one side, the thread screwing part is formed on the outer edge of the screw rod, a wedge-shaped anti-dropping structure is arranged on one side, close to the bolt head, of the screw rod, and the wedge-shaped anti-dropping structure comprises a wedge-shaped pyramid part and a groove arranged between the wedge-shaped pyramid part and the bolt head.
Further, the maximum diameter of the wedge-shaped cone part is larger than the diameter of the screw and the mounting hole diameter corresponding to the part.
Through adopting above-mentioned scheme, when impressing locking anticreep bolt in the part, because of wedge pyramis size is greater than part mounting hole and pyramis rear end leaves the recess for during partial part is crowded into the recess, even fatigue fracture inefficacy appears with the screw rod in flange nut along with the vibration of air compressor machine, also guaranteed that the bolt head can not fall into the piston work intracavity, can effectively reduce the cost of maintenance in air compressor machine later stage.
Furthermore, the end face of the bolt head facing one side of the screw rod is provided with anti-slip teeth which are circumferentially arranged along the screw rod, and the anti-slip teeth are convex towards the screw rod. The friction force between the bolt head and the part is increased by the arrangement of the anti-skidding teeth, so that the anti-skidding capacity of the bolt is greatly improved, and the looseness of a fastened piece caused by the rotation of the flange nut is prevented.
Furthermore, a space is reserved between every two adjacent anti-slip teeth, and the top surfaces of the anti-slip teeth are arranged in a conical mode. The anti-slip tooth structure effectively prevents parts from being seriously scratched by the anti-slip teeth when the anti-loose and anti-falling bolt is screwed down, and ensures that the anti-slip teeth are difficult to wear along with the vibration of the air compressor and the vehicle body, thereby ensuring the fastening effect of the flange nut.
Further, the bolt head is a flat head. This locking anticreep bolt is applicable to installation departments such as air compressor machine and automobile body inside, and these installation departments spaces are narrow and small, do not have the spanner space, so adopt the crew cut design more suitable.
The anti-back nut is characterized in that: used for combining and matching with the anti-loose and anti-drop bolt.
Further, including the nut body, the lower extreme of nut body is provided with the flange face, and the periphery of nut body is provided with prevents moving back the blank holder.
Furthermore, the anti-back-pressing edges are symmetrically arranged on the nut body.
The flange face on the nut body increases the bearing rigidity of the fastening process, and after the bolt is completely screwed in the nut through the anti-retreating blank pressing, the looseness of the flange nut caused by the vibration of the air compressor and the vehicle body is prevented.
The utility model can reduce the conditions of bolt locking and nut thread sliding, the locking is easy to disassemble, even if the flange nut and the screw are in fatigue fracture failure, the screw head can not fall into the working cavity of the piston, the later maintenance cost of the air compressor can be effectively reduced, and the utility model is suitable for narrow installation structure environment.
Drawings
Fig. 1-2 are schematic structural views of the anti-loosening and anti-dropping bolt of the utility model;
FIG. 3 is a schematic view of the nut body
FIG. 4 is a schematic top view of the structure of FIG. 3;
FIG. 5 is a cross-sectional view of FIG. 3;
FIG. 6 is a schematic view of the mounting structure of the present invention;
in the figure, 1-1-bolt head, 2-screw rod, 3-thread screwing part, 4-anti-falling structure, 41-wedge-shaped cone part, 42-groove, 5-anti-slip tooth, 6-nut body, 7-flange surface, 8-anti-backing blank holder, 9-part and 10-piston working cavity.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings to better understand the technical solution.
The utility model relates to a locking and anti-drop bolt and anti-drop nut combined structure, which is mainly used in the narrow installation structure environment inside an air compressor and a vehicle body, and the concrete structure is shown in figures 1-6, the locking and anti-drop bolt and the anti-drop nut are matched for use, the locking and anti-drop bolt comprises a bolt head 1 with a flat head structure, a screw 2 formed by extending from the top surface of the bolt head 1 to one side, and a thread screwing part 3 formed on the outer edge of the screw 2, one side of the screw 2 close to the bolt head 1 is provided with a wedge-shaped anti-drop structure 4, the wedge-shaped anti-drop structure 4 comprises a wedge-shaped pyramid part 41 and a groove 42 arranged between the wedge-shaped pyramid part 41 and the bolt head 1, the maximum diameter of the wedge-shaped pyramid part 41 is larger than the diameter of the screw 2 and the installation aperture corresponding to a part 9, the wedge-shaped anti-drop structure 4 arranged in the structure is used for pressing the locking bolt into the part, because the size of the wedge-shaped cone part 41 is larger than the mounting hole of the part 9, and the groove 42 is reserved at the rear end of the wedge-shaped cone part 41, part of the part 9 is extruded into the groove 42, even if the flange nut and the screw rod 2 are subjected to fatigue fracture failure along with the vibration of the air compressor, the bolt head 1 is ensured not to fall into the piston working cavity 10, and the later maintenance cost of the air compressor can be effectively reduced.
In order to increase the friction force between the bolt head 1 and the part 9 and greatly improve the anti-slip capability of the bolt, anti-slip teeth 5 which are circumferentially arranged along the screw rod 2 are arranged on the end surface of the bolt head 1 facing one side of the screw rod 2, the anti-slip teeth 5 are protruded towards the screw rod 2, a space is reserved between every two adjacent anti-slip teeth, and the top surfaces of the anti-slip teeth 5 are arranged in a conical shape. The anti-skidding tooth 5 that this structure set up effectively prevents that the part is by the serious fish tail of anti-skidding tooth 5 when locking anticreep bolt is screwed up, makes anti-skidding tooth 5 be difficult to by wearing and tearing along with the vibration of air compressor machine and automobile body moreover, has guaranteed flange nut's fastening effect.
As shown in fig. 3-5, the anti-loosening nut is used in cooperation with an anti-loosening and anti-releasing bolt, and comprises a nut body 6, a flange surface 7 is arranged at the lower end of the nut body 6, anti-loosening edges 8 are arranged on the periphery of the nut body 6, and the anti-loosening edges 8 are symmetrically arranged on the nut body 6. The flange face 7 on the nut body 6 increases the bearing rigidity in the fastening process, and after the bolt is completely screwed in by the nut through the anti-back pressing edge 8, the looseness of the flange nut caused by the vibration of the air compressor and the vehicle body is prevented.
Claims (8)
1. The utility model provides a locking anticreep bolt, includes bolt head (1), extends screw rod (2) that form and screw thread portion of closure (3) that is formed on screw rod (2) outer fringe to one side from bolt head (1) top surface, its characterized in that: the bolt is characterized in that a wedge-shaped anti-falling structure (4) is arranged on one side, close to the bolt head (1), of the screw (2), and the wedge-shaped anti-falling structure (4) comprises a wedge-shaped cone part (41) and a groove (42) arranged between the wedge-shaped cone part (41) and the bolt head (1).
2. The anti-loosening and anti-dropping bolt as claimed in claim 1, wherein: the maximum diameter of the wedge-shaped taper part (41) is larger than the diameter of the screw rod (2) and the mounting hole diameter corresponding to the part (9).
3. The anti-loosening and anti-dropping bolt as claimed in claim 1, wherein: the bolt head (1) is provided with on the terminal surface towards screw rod (2) one side anti-skidding tooth (5) that are the circumference and arrange along the screw rod, anti-skidding tooth (5) are protruding to screw rod (2) direction.
4. The anti-loosening and anti-dropping bolt as claimed in claim 3, wherein: and a space is reserved between every two adjacent anti-skidding teeth (5), and the top surfaces of the anti-skidding teeth (5) are arranged in a conical manner.
5. The anti-loosening and anti-dropping bolt as claimed in claim 1, wherein: the bolt head (1) is a flat head.
6. The utility model provides an anti-back nut which characterized in that: the locking and anti-dropping bolt is used for being combined and matched with the locking and anti-dropping bolt of any one of claims 1 to 5.
7. The anti-back nut as claimed in claim 6, wherein: the nut is characterized by comprising a nut body (6), wherein a flange face (7) is arranged at the lower end of the nut body (6), and an anti-back pressing edge (8) is arranged at the periphery of the nut body (6).
8. The anti-back nut as claimed in claim 7, wherein: the anti-receding pressing edges (8) are symmetrically arranged on the nut body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121523945.3U CN215409670U (en) | 2021-07-06 | 2021-07-06 | Anti-loosening and anti-dropping bolt and anti-backing nut matched with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121523945.3U CN215409670U (en) | 2021-07-06 | 2021-07-06 | Anti-loosening and anti-dropping bolt and anti-backing nut matched with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215409670U true CN215409670U (en) | 2022-01-04 |
Family
ID=79647167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121523945.3U Active CN215409670U (en) | 2021-07-06 | 2021-07-06 | Anti-loosening and anti-dropping bolt and anti-backing nut matched with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215409670U (en) |
-
2021
- 2021-07-06 CN CN202121523945.3U patent/CN215409670U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220516 Address after: 317000 Zijing Road, Gucheng street, Linhai City, Taizhou City, Zhejiang Province Patentee after: Weibaisheng Technology (Taizhou) Co.,Ltd. Address before: No.203, Jujing Road, Gucheng street, Linhai City, Taizhou City, Zhejiang Province Patentee before: TAIZHOU ZHONGJI AUTO PARTS Co.,Ltd. |
|
| TR01 | Transfer of patent right |