CN216278882U - Screw for chain wheel of motorcycle combined structure - Google Patents
Screw for chain wheel of motorcycle combined structure Download PDFInfo
- Publication number
- CN216278882U CN216278882U CN202122734441.2U CN202122734441U CN216278882U CN 216278882 U CN216278882 U CN 216278882U CN 202122734441 U CN202122734441 U CN 202122734441U CN 216278882 U CN216278882 U CN 216278882U
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- chain wheel
- screw
- head
- tail
- tail part
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to a screw for a chain wheel of a motorcycle combined structure, which comprises a head part with a tool connecting hole and a tail part arranged at the other end of the head part opposite to the tool connecting hole, wherein external threads are arranged on the periphery of the tail part, a positioning cap edge extending towards the tail part is arranged on the periphery of the head part, the outer diameter of the positioning cap edge is larger than that of the tail part, an open hole is formed in the middle of one end of the tail part far away from the head part, and one end of the tail part with a hole forms a stop ring after being extruded and expanded, and the screw has the beneficial effects that: the head of the screw is provided with a positioning brim, so that the assembly efficiency is improved, and the locking torque is provided; holes are reserved in the tail portions of the screws, the tail portions of the screws are expanded by an extrusion method to lock the two ends of the chain wheel, the chain wheel which is caused by loosening of the screws in the use process of the combined chain wheel can be prevented from being disassembled, potential safety hazards are eliminated, and the safety performance of products is enhanced.
Description
Technical Field
The utility model relates to the field of a chain wheel of a motorcycle combined structure, in particular to a screw for the chain wheel of the motorcycle combined structure.
Background
Bicycles and motorcycles mostly adopt a chain transmission mode to transmit power, wherein chain wheels comprise a driving chain wheel and a driven chain wheel, and the chain wheels are also called small chain wheels and large chain wheels in the industry. The existing large chain wheel comprises an integral structure and a combined structure;
the integral structure is that the sprocket is processed on the sprocket body, and the material is steel or for aluminium, and steel sprocket weight is too big, and aluminium matter sprocket intensity is not enough. The sprocket of integrated configuration is that the sprocket inserts (outer lane) at sprocket body (inner circle) upper installation sprocket, and the outer lane material is the steel, guarantees intensity and wearability, and the inner circle material is aluminium, and density is little, and weight reduction realizes the sprocket lightweight under the prerequisite of guaranteeing sprocket intensity.
Among the prior art the sprocket body is connected through the screw with the sprocket insert, because this screw is the standard component, is difficult to master the degree of depth that the screw was beaten into the sprocket, causes assembly efficiency low. And because the existence of the moment of torsion of not screwing up when current screw assembly, the integrated configuration sprocket product quality of assembly is difficult to guarantee, and at the vehicle in-process of traveling, because of vibrations, the screw can take place to become flexible, uses for a long time and can lead to the screw to drop, makes the sprocket assembly of combination disintegrate, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to solve the above-mentioned deficiencies of the prior art,
a screw for a motorcycle composite structure sprocket is provided.
In order to achieve the purpose, the utility model provides the following technical scheme: a screw for motorcycle integrated configuration sprocket, including the head that has the tool connecting hole and set up in the relative afterbody that sets up the tool connecting hole other end of head, afterbody circumference is provided with external screw thread, its characterized in that: the head circumference is provided with the location brim of a hat that extends to the afterbody, location brim of a hat external diameter is greater than the external diameter of afterbody, the afterbody is kept away from the one end middle part of head and is had the open-ended hole, and the afterbody has the one end of hole and forms the retaining ring after the extrusion inflation.
By adopting the technical scheme, the using method of the utility model is that a spanner is used for installing a screw into the connecting position of the chain wheel body and the sprocket insert through the tool connecting hole, when the positioning cap edge is just immersed into the connecting position of the chain wheel body and the sprocket insert, the positioning cap edge is used for positioning each screw, the effect of controlling the driving depth of the screw can be achieved, the material of the position, which is the position of the tail part with the hole with the opening, is extruded and expanded through an extrusion method to form the anti-backing ring which is larger than the inner diameter of the connecting hole of the chain wheel body and the sprocket insert, and the anti-backing function of preventing the screw from backing in the using process of the combined structure chain wheel after assembly is realized.
The utility model has the beneficial effects that: the head of the screw is provided with a positioning brim, so that the assembly efficiency is improved, and the locking torque is provided; holes are reserved in the tail portions of the screws, the tail portions of the screws are expanded by an extrusion method to lock the two ends of the chain wheel, the chain wheel which is caused by loosening of the screws in the use process of the combined chain wheel can be prevented from being disassembled, potential safety hazards are eliminated, and the safety performance of products is enhanced.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic perspective view 1 of an embodiment of the present invention.
Fig. 2 is a schematic perspective view 2 of an embodiment of the present invention.
FIG. 3 is a perspective view of a sprocket having a composite structure according to an embodiment of the present invention.
FIG. 4 is an exploded view of a sprocket having a composite construction according to an embodiment of the present invention.
Fig. 5 is a perspective view of a prior art screw for a motorcycle composite structure sprocket 1.
Fig. 6 is a perspective view of a prior art screw for a motorcycle composite structure sprocket 2.
Detailed Description
Referring to fig. 1-6: the screw c for the combined structure chain wheel of the motorcycle comprises a head part 1 with a tool connecting hole 11 and a tail part 2 arranged at the other end of the head part 1 opposite to the tool connecting hole 11, wherein the outer diameter of the tail part 2 is smaller than that of the head part 1, an external thread 21 is circumferentially arranged on the tail part 2, a positioning brim 12 extending towards the tail part 2 is circumferentially arranged on the head part 1, the outer diameter of the positioning brim 12 is larger than that of the tail part 2, an open hole 22 is formed in the middle of one end of the tail part 2 far away from the head part 1, and one end of the tail part 1 with the hole 22 forms a check ring 23 after extrusion expansion, so that the combined structure chain wheel comprises a chain wheel body a and a chain tooth insert b connected to the chain wheel body a through screws as shown in figures 3-4.
Claims (1)
1. A screw for motorcycle integrated configuration sprocket, including the head that has the tool connecting hole and set up in the relative afterbody that sets up the tool connecting hole other end of head, afterbody circumference is provided with external screw thread, its characterized in that: the head circumference is provided with the location brim of a hat that extends to the afterbody, location brim of a hat external diameter is greater than the external diameter of afterbody, the afterbody is kept away from the one end middle part of head and is had the open-ended hole, and the afterbody has the one end of hole and forms the retaining ring after the extrusion inflation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122734441.2U CN216278882U (en) | 2021-11-09 | 2021-11-09 | Screw for chain wheel of motorcycle combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122734441.2U CN216278882U (en) | 2021-11-09 | 2021-11-09 | Screw for chain wheel of motorcycle combined structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216278882U true CN216278882U (en) | 2022-04-12 |
Family
ID=81007168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122734441.2U Active CN216278882U (en) | 2021-11-09 | 2021-11-09 | Screw for chain wheel of motorcycle combined structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216278882U (en) |
-
2021
- 2021-11-09 CN CN202122734441.2U patent/CN216278882U/en active Active
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| GR01 | Patent grant |