CN213981705U

CN213981705U - Spline head shaft body structure for electric bicycle motor

Info

Publication number: CN213981705U
Application number: CN202022995779.9U
Authority: CN
Inventors: 杨昇; 吴振献; 邹欢华; 孙文杰; 谢亚江
Original assignee: Changzhou Yucheng Futong Motor Co Ltd
Current assignee: Changzhou Yucheng Futong Motor Co Ltd
Priority date: 2020-12-13
Filing date: 2020-12-13
Publication date: 2021-08-17
Anticipated expiration: 2030-12-13

Abstract

The utility model discloses a spline head shaft structure that electric bicycle motor used, including the axle body, the both ends of axle body have preceding spindle nose and back spindle nose respectively, have first axle journal between axle body and the preceding spindle nose, have the second axle journal between axle body and the back spindle nose, have the annular between axle body and the second axle journal and keep off the shoulder, and the second axle journal has the installation cavity, and the back spindle nose passes through the interference fit with the installation cavity, and the cartridge sets up the front end tip at the second axle journal. The utility model has the advantages of simple and reasonable structure, can reduce the length of axis body.

Description

Spline head shaft body structure for electric bicycle motor

Technical Field

The utility model relates to a motor field especially relates to spline head shaft structure that electric bicycle motor used.

Background

With the development of society, the most common tools for people to replace walking have been changed from bicycles to electric vehicles, and the electric vehicles can supply power to a motor through a storage battery and drive the electric vehicles to move forwards by utilizing the motor;

in most electric vehicles in the market, the motor is arranged in the rear wheel of the electric vehicle and is directly driven by the motor to rotate, so that the motor directly determines the quality of the performance of the electric vehicle and whether the electric vehicle can reliably work or not; the motor shaft is one of indispensable parts in the electric bicycle motor;

traditional axis body tip has the spline head, but because the axis body of traditional structure all is integrative axle body structure, consequently when the spline position of processing axis body tip, must leave the tool withdrawal groove, just so the length of whole axis body has just so extended, and the consumptive material that not only the axis body used has increased, and the size of whole motor also can the grow simultaneously, can not practice thrift the space.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a spline head shaft body structure for an electric bicycle motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a spline head shaft structure that electric bicycle motor was used, includes the axle body, and the both ends of axle body have preceding spindle nose and back spindle nose respectively, have first axle journal between axle body and the preceding spindle nose, have the second axle journal between axle body and the back spindle nose, have the annular between axle body and the second axle journal and keep off the shoulder, and the second axle journal has the installation cavity, and the back spindle nose passes through the interference fit with the installation cavity, and the cartridge sets up the front end tip at the second axle journal.

Preferably, the rear shaft head comprises a spline head and an assembling lug, one end of the assembling lug is connected with the spline head, the assembling lug can stretch into the installation cavity, and the assembling lug is in interference fit with the installation cavity.

Preferably, when the rear shaft head is inserted and arranged at the front end of the second shaft neck, the spline head abuts against the front end face of the second shaft neck, and the shaft diameter of the second shaft neck is larger than the diameter of the spline head.

Preferably, the first journal has the same shaft diameter as the second journal.

Preferably, the second journal is provided with an annular assembling groove at the annular retaining shoulder.

Preferably, the shaft body is provided with a first key groove, the two ends of the shaft body, which are positioned on the first key groove, are also provided with a second annular assembling groove and a third annular assembling groove, and the second annular assembling groove is positioned on the annular blocking shoulder.

Preferably, the front shaft head is provided with a second key groove, and the front end of the front shaft head is provided with a fourth annular assembling groove.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a structure is that spline head and axis body are two solitary individualities and assemble each other, after adopting above-mentioned structure, axis body and spline head are processed alone respectively, consequently assembling into an organic whole back, and the position of axis body spline head can not have the tool escape groove, just so can reduce the length of whole axis body, just so can reduce the volume of whole motor when making the motor to reach the purpose of practicing thrift the space.

Drawings

FIG. 1 is a schematic structural view of an integral shaft of a prior structure;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a spline head axle body structure that electric bicycle motor used, including axle body 1, axle body 1's both ends have preceding spindle nose 2 and back spindle nose 3 respectively, have first spindle nose 4 between axle body 1 and the preceding spindle nose 2, have second spindle nose 5 between axle body 1 and the back spindle nose 3, have annular fender shoulder 6 between axle body 1 and the second spindle nose 5, second spindle nose 5 has installation cavity 7, back spindle nose 3 is through the interference fit with installation cavity 7, the cartridge sets up the front end tip at second spindle nose 5.

Preferably, the rear shaft head 3 comprises a spline head 8 and an assembling protrusion 8-1, one end of the assembling protrusion 8-1 is connected with the spline head 8, the assembling protrusion 8-1 can extend into the mounting cavity 7, and the assembling protrusion 8-1 is in interference fit with the mounting cavity 7. By the structure, the spline head 8 can be fixedly arranged on the rear shaft head 3 without a tool withdrawal groove, and the length of the whole shaft body is reduced.

Preferably, when the rear axle head 3 is inserted and arranged at the front end of the second axle journal 5, the spline head 8 abuts against the front end surface 9 of the second axle journal 5, and the axle diameter of the second axle journal 5 is larger than the diameter of the spline head 8.

Preferably, the first journal 4 has the same shaft diameter as the second journal 5.

Preferably, the second journal 5 is provided with an annular assembly groove 10 at the annular shoulder 6. During manufacturing, the O-shaped ring can be clamped in the annular assembling groove 10, so that the effects of eliminating axial clearance and avoiding rigid vibration are achieved.

Preferably, the shaft body 1 is provided with a first key groove 11, and the shaft body 1 is further provided with a second annular assembling groove 15 and a third annular assembling groove 12 at two ends of the first key groove 11, and the second annular assembling groove 15 is located at the annular blocking shoulder 6.

Preferably, the front axle head 2 is provided with a second key slot 13, and the front end of the front axle head 2 is provided with a fourth annular assembling groove 14.

It should be noted that the utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece can all be customized according to the record of description and attached drawing, and the concrete connected mode of each part all adopts conventional means such as mature bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt among the prior art, conventional model, and the inventor does not detailed herein again.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a spline head axle body structure that electric bicycle motor used, includes axle body (1), the both ends of axle body (1) have preceding spindle nose (2) and back spindle nose (3) respectively, its characterized in that: have first axle journal (4) between axle body (1) and preceding spindle nose (2), have second axle journal (5) between axle body (1) and back spindle nose (3), have between axle body (1) and second axle journal (5) annular fender shoulder (6), second axle journal (5) have installation cavity (7), back spindle nose (3) through with the interference fit of installation cavity (7), the cartridge sets up the front end tip at second axle journal (5).

2. The spline head shaft body structure for the electric bicycle motor according to claim 1, characterized in that the rear shaft head (3) comprises a spline head (8) and an assembling lug (8-1), one end of the assembling lug (8-1) is connected with the spline head (8), the assembling lug (8-1) can extend into the mounting cavity (7), and the assembling lug (8-1) is in interference fit with the mounting cavity (7).

3. The spline head shaft structure for the electric bicycle motor according to one of claims 1 or 2, characterized in that when the rear shaft head (3) is inserted and disposed at the front end of the second shaft neck (5), the spline head (8) abuts against the front end face (9) of the second shaft neck (5), and the shaft diameter of the second shaft neck (5) is larger than the diameter of the spline head (8).

4. The spline head shaft structure for the electric bicycle motor according to claim 1, wherein the shaft diameter of the first journal (4) is the same as the shaft diameter of the second journal (5).

5. A splined head shaft structure for an electric bicycle motor according to claim 1, wherein the second journal (5) is provided with an annular fitting groove (10) at the annular shoulder (6).

6. The spline head shaft structure for the electric bicycle motor is characterized in that the shaft body (1) is provided with a first key groove (11), the shaft body (1) is further provided with a second annular assembling groove (15) and a third annular assembling groove (12) at two ends of the first key groove (11), and the second annular assembling groove (15) is positioned at the annular retaining shoulder (6).

7. The spline head shaft body structure for the electric bicycle motor according to claim 1, characterized in that the front shaft head (2) is provided with a second key groove (13), and the front end of the front shaft head (2) is provided with a fourth annular assembling groove (14).