CN212605655U - Square sleeve for split type chain wheel - Google Patents
Square sleeve for split type chain wheel Download PDFInfo
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- CN212605655U CN212605655U CN202021545024.2U CN202021545024U CN212605655U CN 212605655 U CN212605655 U CN 212605655U CN 202021545024 U CN202021545024 U CN 202021545024U CN 212605655 U CN212605655 U CN 212605655U
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- base
- boss
- chain wheel
- split type
- annular
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Abstract
The utility model belongs to the technical field of split type chain wheel, specifically relate to a square cover for split type chain wheel, including base and the boss that has shaft hole and coaxial setting, the base on be provided with the fixed orifices that intersects with the shaft hole, the square cover is fixed in the chain wheel pivot through the fixed orifices with the help of the pin, the boss outer wall on evenly be provided with the spline structure, the base on be provided with the annular, the boss setting in the annular of base and the annular internal diameter be greater than the external diameter of boss, set up the annular on the base, add man-hour with the lathe, can increase the degree of depth of spline groove, avoided appearing the problem of the phenomenon of skidding easily, long service life moreover.
Description
Technical Field
The utility model belongs to the technical field of split type chain wheel, specifically a square cover for split type chain wheel has been related to.
Background
Under the general condition, electric bicycle disposes two sets of actuating system, use electric drive system and the manpower actuating system of battery as power promptly, in the manpower actuating system, the power accessible pivot of effect on the running-board, split type chain wheel, the chain, the flywheel transmits for the drive wheel, thereby make the automobile body move forward, it is thus visible, electric bicycle's pivot and split type chain wheel structure are the key structure of guaranteeing the reliable operation of manpower actuating system, electric bicycle's split type chain wheel includes chain wheel body and chain wheel square cover two parts, the chain wheel body passes through chain wheel square cover fixed mounting in manpower actuating system's pivot.
Refer to patent No. 2018218207448, boss on the square sleeve adopts spline structure, because square sleeve structure as an organic whole, add man-hour, spline structure processing on the boss is inconvenient, it is lighter to lead to the spline groove, the phenomenon of skidding appears easily, and life is short, if the spline groove deepens, leave over the metal block at the spline groove bottom after processing and be difficult to the clearance, the crossing position processing of base of spline groove and square sleeve is not thorough, it is inseparable to lead to the square sleeve to laminate after assembling with the chain wheel, and life is short.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem, designed a square sleeve for split type chain wheel, set up the annular on the base, add man-hour with the lathe, can increase the degree of depth of spline groove, avoided appearing the problem of phenomenon of skidding easily, long service life moreover.
The utility model discloses a technical scheme be, designed a square cover for split type chain wheel, including base and the boss that has shaft hole and coaxial setting, the base on be provided with the fixed orifices that intersects with the shaft hole, the square cover is fixed in the chain wheel pivot through the fixed orifices with the help of the pin, the boss outer wall on evenly be provided with spline structure, the base on be provided with the annular, the boss setting in the annular of base and the annular internal diameter is greater than the external diameter of boss.
The outer wall of the boss is evenly and sequentially provided with a limiting bulge and a limiting groove, and the head of the limiting bulge is provided with a guide inclined plane.
The base be rectangle or D font and the corner be the fillet.
The annular groove is also internally provided with a metal block fixed on the limiting groove.
The utility model has the advantages that the square sleeve for the split type crankset is designed, the circular groove is arranged on the base around the lug boss, the processing space when the lug boss limiting groove is processed is increased, the limiting groove extends into the circular groove of the base, when the square sleeve is installed, the square sleeve is more tightly attached with the crankset, when the square sleeve is processed, the processing depth of the limiting groove on the lug boss can be increased, the metal blocks left after processing can be embedded into the circular groove in a petal type without cleaning and polishing, the processing steps are reduced, the processing efficiency is greatly improved, after the limiting groove is deepened, the easy occurrence of a slip phenomenon is avoided, the torque force is greatly improved, and the service life is greatly prolonged,
drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an assembly schematic of the present invention.
In the attached drawing, the device comprises a base 1, a base 2, a boss 3, a ring groove 4, a limiting bulge 5, a limiting groove 6 and a metal block.
Detailed Description
As shown in fig. 1-2, the utility model discloses a square cover for split type chain wheel, including base 1 and the boss 2 that has shaft hole and coaxial setting, base 1 on be provided with the crossing fixed orifices in shaft hole, the square cover is fixed in the chain wheel pivot through the fixed orifices with the help of the pin, 2 outer walls of boss on evenly be provided with spline structure, base 1 on be provided with annular 3, boss 2 set up in annular 3 of base 1 and 3 internal diameters of annular are greater than the external diameter of boss 2.
The annular groove 3 is arranged on the base 1 around the boss 2, the processing space when the boss 2 limiting groove 5 is processed is increased, the limiting groove 5 extends into the annular groove 3 of the base 1, when the square sleeve is mounted, the square sleeve is more tightly attached to the chain wheel, the processing depth of the limiting groove 5 on the boss 2 can be increased when the square sleeve is processed, the metal block 6 left after processing can be embedded into the annular groove 3 in a petal type without cleaning and polishing, the appearance is more attractive, the processing steps are reduced, the processing efficiency is greatly improved, after the limiting groove 5 is deepened, the easy-appearing slipping phenomenon is avoided, the torque force is greatly improved, and the service life is greatly prolonged,
as shown in fig. 1-2, the outer wall of the boss 2 is uniformly and sequentially provided with a limiting bulge 4 and a limiting groove 5, and the head of the limiting bulge 4 is provided with a guide inclined plane.
The inclined plane is arranged on the limiting protrusion 4, so that guiding and mounting are provided during mounting, and mounting is convenient. And (4) the method is quick.
As shown in fig. 1-2, the base 1 is rectangular or D-shaped and has rounded corners.
The rectangular or D-shaped base 1 is simpler to process, the corner round corners not only save materials, but also can prevent the human body from being scratched when being installed, and the safety is greatly improved.
The ring groove 3 is also internally provided with a metal block 6 fixed on the limiting groove 5.
The metal block 6 that remains behind after processing can be the embedding of petal formula in annular 3, need not to clear up again and polish, and is more pleasing to the eye moreover.
Claims (4)
1. The utility model provides a square cover for split type chain wheel, is including base (1) and boss (2) that have shaft hole and coaxial setting, base (1) on be provided with the crossing fixed orifices in shaft hole, the square cover is fixed in the chain wheel pivot through the fixed orifices with the help of the pin, its characterized in that: boss (2) outer wall on evenly be provided with spline structure, base (1) on be provided with annular (3), boss (2) set up in annular (3) of base (1) and annular (3) internal diameter is greater than the external diameter of boss (2).
2. The square sleeve for the split type crankset as claimed in claim 1, wherein: boss (2) outer wall on evenly set gradually spacing arch (4) and spacing groove (5), spacing arch (4) head be provided with the direction inclined plane.
3. The square sleeve for the split type crankset as claimed in claim 1, wherein: the base (1) is rectangular or D-shaped, and corners are all round corners.
4. The square sleeve for the split type crankset as claimed in claim 2, wherein: the ring groove (3) is also internally provided with a metal block (6) fixed on the limiting groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021545024.2U CN212605655U (en) | 2020-07-30 | 2020-07-30 | Square sleeve for split type chain wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021545024.2U CN212605655U (en) | 2020-07-30 | 2020-07-30 | Square sleeve for split type chain wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212605655U true CN212605655U (en) | 2021-02-26 |
Family
ID=74730941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021545024.2U Active CN212605655U (en) | 2020-07-30 | 2020-07-30 | Square sleeve for split type chain wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212605655U (en) |
-
2020
- 2020-07-30 CN CN202021545024.2U patent/CN212605655U/en active Active
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