CN210290418U - Bolt for positioning electric appliance - Google Patents
Bolt for positioning electric appliance Download PDFInfo
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- CN210290418U CN210290418U CN201921164489.0U CN201921164489U CN210290418U CN 210290418 U CN210290418 U CN 210290418U CN 201921164489 U CN201921164489 U CN 201921164489U CN 210290418 U CN210290418 U CN 210290418U
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- screw thread
- external screw
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- rod
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Abstract
The utility model belongs to the technical field of the fastener, especially, relate to a bolt is used in electrical apparatus location. The technical problems that the design is unreasonable and the like in the prior art are solved. This bolt for electrical apparatus location includes outer hexagon nut, connect the body of rod on outer hexagon nut terminal surface, the one end lateral part that is close to outer hexagon nut at the body of rod is equipped with external screw thread one, the one end lateral part of keeping away from outer hexagon nut at the body of rod is equipped with external screw thread two, the external diameter of external screw thread two is less than the external diameter of external screw thread one, the screw thread of external screw thread two revolves to unanimous and leaves the helicla flute between external screw thread two and the one in opposite directions one with the screw thread, the screw thread pitch of external screw thread two is less than the screw thread pitch of external screw thread one, the revolve of helicla flute is unanimous with the external screw thread one, the one end of keeping away from the body of rod at outer hexagon nut is equipped with hexagonal. The utility model has the advantages that: the loosening phenomenon is avoided.
Description
Technical Field
The utility model belongs to the technical field of the fastener, especially, relate to a bolt is used in electrical apparatus location.
Background
The fastener belongs to a common product, and the fastener comprises a bolt, a nut and the like.
The application field of the fastener is very wide, for example, on mechanical equipment and fixed installation of various electric appliances.
The installation of the electrical apparatus needs to use fasteners, the existing fasteners, namely the bolts are common bolts, and the common bolts are inner hexagonal bolts or outer hexagonal heads, so that in the actual installation process, due to the fact that different electrical apparatuses and the change of installation positions are adopted, the bolts with different hexagonal heads need to be replaced, and the installation and fixation efficiency of the electrical apparatus is influenced;
secondly, the screw thread of the bolt is connected with the mounting external screw thread in a threaded mode, but the connection mode is easy to loosen.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a design is more reasonable and can prevent not hard up bolt for electrical apparatus location.
In order to achieve the above purpose, the utility model adopts the following technical proposal: this bolt for electrical apparatus location includes outer hexagon nut, connect the body of rod on outer hexagon nut terminal surface, the one end lateral part that is close to outer hexagon nut at the body of rod is equipped with external screw thread one, the one end lateral part of keeping away from outer hexagon nut at the body of rod is equipped with external screw thread two, the external diameter of external screw thread two is less than the external diameter of external screw thread one, the screw thread of external screw thread two revolves to unanimous and leaves the helicla flute between external screw thread two and the one in opposite directions one with the screw thread, the screw thread pitch of external screw thread two is less than the screw thread pitch of external screw thread one, the revolve of helicla flute is unanimous with the external screw thread one, the one end of keeping away from the body of rod at outer hexagon nut is equipped with hexagonal.
In the bolt for positioning the electric appliance, the depth of the cold heading formed inner hexagonal counter bore is 1/3-1/2 of the thickness of the outer hexagonal nut.
In the bolt for positioning the electric appliance, the diameter of the cold heading formed inner hexagonal counter bore is larger than the diameter of the rod body.
In the bolt for positioning the electric appliance, the orifice of the inner hexagonal counter bore formed by cold heading is provided with the chamfer.
In the bolt for positioning an electric appliance, the chamfer may be one of a circular arc chamfer and an inclined chamfer.
In the bolt for positioning the electric appliance, a 45-degree chamfer is arranged at the end part of one end of the rod body, which is far away from the outer hexagonal nut.
In the bolt for positioning the electric appliance, the outer hexagonal nut and the rod body are connected into an integral structure and are formed by cold heading.
In the bolt for positioning electric appliance, the length of the second external thread is shorter than that of the first external thread.
Compared with the prior art, the bolt for positioning the electric appliance has the advantages that:
the design simultaneously of outer hexagon nut and cold-heading shaping hexagon socket head cap counter bore can improve the practicality, has avoided single structure and has leaded to application range limited, and the design is more reasonable.
Two threads are adopted, the thread pitch of the two threads is inconsistent, front and back double fixation can be achieved, and the phenomenon of self loosening is avoided.
Drawings
Fig. 1 is a schematic structural diagram provided by the present invention.
In the figure, an outer hexagonal nut 1, a cold heading formed inner hexagonal counterbore 11, a chamfer 12, a rod body 2, a first external thread 21, a second external thread 22, a spiral groove 23 and a 45-degree chamfer 24.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in figure 1, the bolt for positioning the electric appliance comprises an outer hexagonal nut 1 and a rod body 2 connected to one end face of the outer hexagonal nut 1, and according to the optimized scheme, the outer hexagonal nut 1 and the rod body 2 are connected into an integral structure and are formed through cold heading.
And secondly, a cold heading forming inner hexagonal counter bore 11 is arranged at one end of the outer hexagonal nut 1, which is far away from the rod body 2, and the axial lead of the cold heading forming inner hexagonal counter bore 11 is coincided with the axial lead of the rod body 2.
The depth of the cold heading forming inner hexagonal counter bore 11 is 1/3-1/2 of the thickness of the outer hexagonal nut 1.
The diameter of the cold heading formed inner hexagonal counter bore 11 is larger than the diameter of the rod body 2.
And a chamfer 12 is arranged at the hole opening of the cold heading forming inner hexagonal counter bore 11. Chamfer 12 which may facilitate insertion of a tool.
The chamfer 12 is any one of a circular arc chamfer and an inclined chamfer.
And a 45-degree chamfer 24 is arranged at the end part of the rod body 2 far away from the outer hexagonal nut 1. The 45-degree chamfer 24 can be conveniently inserted into the internal thread hole and plays a role in guiding.
The cold heading forming can improve the structural strength and the forming and processing precision of blank pieces, so that the subsequent processing and manufacturing are facilitated, and the processing difficulty is reduced.
The outer hexagonal nut 1 and the cold heading forming inner hexagonal counter bore 11 are designed simultaneously, so that the practicability can be improved, the limitation of the application range due to a single structure is avoided, and the design is more reasonable.
Be close to outer hexagon nut 1's one end lateral part at body of rod 2 and be equipped with external screw thread 21, body of rod 2 keep away from outer hexagon nut 1's one end lateral part and be equipped with two external screw threads 22, two external screw threads 22's external diameter is less than the external diameter of one external screw thread 21, two external screw threads 22's screw thread revolves to unanimous and leaves helicla flute 23 between two external screw threads 22 and the one 21 one end in opposite directions with external screw thread 21, two external screw threads 22's screw thread pitch is less than the screw thread pitch of one external screw thread 21, the spiral of helicla flute 23 revolves to unanimous with one 21.
The two threads are adopted, the tooth pitch of the two threads is inconsistent, front and back double fixation can be achieved, the phenomenon of self loosening is avoided, and a gasket can also be avoided.
The length of the second external thread 22 is shorter than that of the first external thread 21.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. Bolt for electric appliance positioning, including outer hexagon nut (1), connect body of rod (2) on outer hexagon nut (1) terminal surface, the one end lateral part that is close to outer hexagon nut (1) at body of rod (2) is equipped with external screw thread (21), a serial communication port, body of rod (2) keep away from outer hexagon nut (1) one end lateral part be equipped with external screw thread two (22), the external diameter of external screw thread two (22) is less than the external diameter of external screw thread (21), the screw thread of external screw thread two (22) is revolved to unanimous and is left helicla flute (23) between the one end in outer screw thread two (22) and external screw thread (21) are in opposite directions to the screw thread of external screw thread one (21), the screw thread pitch of external screw thread two (22) is less than the screw thread pitch of external screw thread (21), the screw thread of helicla flute (23) is unanimous with external screw thread (21), the one end of keeping away from body of rod (2) is equipped with cold-heading shaping inner hexagon 11) The axis is coincident with the axis of the rod body (2).
2. The bolt for positioning electric appliances according to claim 1, wherein the depth of the cold-heading inner hexagonal counterbore (11) is 1/3-1/2 of the thickness of the outer hexagonal nut (1).
3. The bolt for positioning the electric appliance according to claim 1, wherein the diameter of the cold heading formed inner hexagonal counter bore (11) is larger than the diameter of the rod body (2).
4. The bolt for positioning the electric appliance according to claim 1, wherein a chamfer (12) is arranged at the hole opening of the cold heading inner hexagonal counter bore (11).
5. The bolt for positioning electric appliance according to claim 4, wherein the chamfer (12) is any one of a circular arc chamfer and a bevel chamfer.
6. The bolt for positioning the electric appliance according to claim 1, wherein the end of the rod body (2) far away from the outer hexagonal nut (1) is provided with a 45-degree chamfer (24).
7. The bolt for positioning the electric appliance according to claim 1, wherein the outer hexagonal nut (1) and the rod body (2) are connected into a whole structure and are formed by cold heading.
8. The electrical appliance positioning bolt according to claim 1, wherein the length of the second external thread (22) is shorter than that of the first external thread (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921164489.0U CN210290418U (en) | 2019-07-23 | 2019-07-23 | Bolt for positioning electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921164489.0U CN210290418U (en) | 2019-07-23 | 2019-07-23 | Bolt for positioning electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290418U true CN210290418U (en) | 2020-04-10 |
Family
ID=70103933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921164489.0U Active CN210290418U (en) | 2019-07-23 | 2019-07-23 | Bolt for positioning electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290418U (en) |
-
2019
- 2019-07-23 CN CN201921164489.0U patent/CN210290418U/en active Active
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