CN215622489U

CN215622489U - Improved bicycle bowl set structure

Info

Publication number: CN215622489U
Application number: CN202121541351.5U
Authority: CN
Inventors: 胡如科
Original assignee: Ningbo H & L Bicycle Co ltd
Current assignee: Ningbo H & L Bicycle Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-01-25
Anticipated expiration: 2031-07-07

Abstract

An improved bicycle bowl group structure comprises a steel bowl seat, an inner gear sleeved in the steel bowl seat, a steel ball arranged between the steel bowl seat and the inner gear, an upper cover supported on the upper part of the inner gear through a conical structure, and a locking ring sleeved on the lower part of the inner gear, wherein the locking ring forms axial limit on the inner gear and prevents the inner gear from falling off the steel bowl seat. The bowl group structure replaces a bearing by matching the steel bowl seat, the inner gear and the steel ball, the lower part of the inner gear is provided with the locking ring for axial limiting, after the upper cover and the inner gear are tightly pressed, the outer conical surface of the lower part of the upper cover is attached to the inner conical surface of the upper part of the inner gear to form a conical structure, and the steel ball between the inner gear and the steel bowl seat is utilized for rotating, so that the whole structure is simple, and the production cost is effectively saved.

Description

Improved bicycle bowl set structure

Technical Field

The utility model relates to an improved bicycle bowl group structure.

Background

The bicycle bowl group is an important part matched with a head tube and a front fork tube, and whether the bicycle can flexibly turn or not is directly related to the assembling quality of the head.

The existing bicycle bowl group generally adopts a bearing to reduce friction force, as shown in fig. 5, the bowl group comprises a bowl seat 6, a bearing 7 sleeved inside the bowl seat 6 and an upper cover I8 arranged on the upper part of the bearing 7 through a conical structure, when the bearing 7 in the bowl group is worn, the whole bowl group needs to be replaced, but the whole structure of the bearing 7 is complex, the production cost is high, the position for placing the bearing 7 inside the bowl seat 6 is generally narrow, the thickness of the bearing 7 is required to be thin, the steel ball for transmission inside the bearing 7 is small in size, the bearing performance is weak, and the service life of the whole bowl group is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problems, the present invention provides an improved bicycle headset structure.

In order to achieve the above purpose, the present invention provides an improved bicycle bowl set structure, which comprises a steel bowl seat, an inner rail sleeved in the steel bowl seat, a steel ball arranged between the steel bowl seat and the inner rail, an upper cover supported on the upper part of the inner rail through a conical structure, and a locking ring sleeved on the lower part of the inner rail;

the steel bowl seat is provided with an opening at the upper part and is bent outwards to form an outward flange, a cavity is formed in the steel bowl seat, an accommodating groove is formed at the edge of the bottom of the cavity in a processing mode, the steel ball is placed in the accommodating groove, a step hole is formed at the bottom of the steel bowl seat and penetrates through the cavity, and an annular retaining edge is formed between the upper part of the step hole and the accommodating groove;

the steel ball bearing is characterized in that a through hole is formed in the center of the inner gear, an opening at the upper portion of the inner gear is bent outwards to form a flanging I, an arc-shaped transition surface is processed at the joint of the flanging I and the outer circumferential surface of the inner gear, the arc-shaped transition surface is abutted against the steel ball, an annular groove is formed in the outer circumferential position of the lower portion of the inner gear, the lower portion of the inner gear extends into the step hole, and the locking ring is installed in the annular groove and is used for axially limiting the inner gear.

As a further improvement of the utility model, the outer diameter of the inner stop is matched with the inner diameter of the middle small hole of the stepped hole, the diameter of the locking ring is greater than the depth of the annular groove, and the difference between the inner diameter of the large hole of the stepped hole and the outer diameter of the inner stop is greater than the diameter of the locking ring.

As a further improvement of the utility model, the locking ring is provided with a contraction joint which enables the locking ring to generate elastic contraction.

As a further improvement of the utility model, the side of the flange facing the steel ball is processed with an inclined surface.

As a further improvement of the utility model, the outer diameter of the flanging I is smaller than the inner diameter of the cavity.

As a further improvement of the utility model, an inner conical surface is processed at the joint of the flanging I and the through hole, an outer conical surface is processed at the lower part of the upper cover, and the outer conical surface is attached to the inner conical surface to form a conical structure.

The utility model has the beneficial effects that:

the bowl group structure changes the structure of a bearing placed in an original steel bowl seat, the bearing is replaced by the matching among the steel bowl seat, an inner stop and a steel ball, the steel bowl seat is equivalent to a bearing outer ring, the inner stop is equivalent to a bearing inner ring, and the steel ball is directly installed between the steel bowl seat and the inner stop, so that the volume of the steel ball is effectively increased, the integral bearing performance of the bowl group is improved, and the service life of the bowl group is prolonged; after the upper cover and the inner gear are tightly pressed, the outer conical surface of the lower part of the upper cover and the inner conical surface of the upper part of the inner gear are attached to form a conical structure, and the steel ball between the inner gear and the steel bowl seat is utilized to rotate.

Drawings

FIG. 1 is an overall structural view of an improved bicycle headset structure of the present invention;

FIG. 2 is a schematic structural view of a steel bowl of component 2;

FIG. 3 is a schematic structural view of the inner rail of the component 3;

figure 4 is a schematic view of the locking ring of the part 5;

fig. 5 is an overall structural view of a bowl group in the prior art.

In the figure: 1. an upper cover; 11. an outer conical surface; 2. a steel bowl seat; 21. flanging; 22. an inner cavity; 23. a containing groove; 24. blocking edges; 25. a stepped bore; 3. an inner gear; 31. flanging I; 32. an inner conical surface; 33. a through hole; 34. an annular groove; 35. an arc transition surface; 4. a steel ball; 5. locking a ring; 51. shrinking the seam; 6. a bowl seat; 7. a bearing; 8. and an upper cover I.

Detailed Description

As shown in fig. 1, the improved bicycle bowl set structure of the present invention comprises a steel bowl base 2, an inner rail 3 sleeved in the steel bowl base 2, a steel ball 4 disposed between the steel bowl base 2 and the inner rail 3, an upper cover 1 supported on the upper portion of the inner rail 3 through a tapered structure, and a locking ring 5 sleeved on the lower portion of the inner rail 3;

an opening is formed in the upper portion of the steel bowl seat 2 and the opening is bent outwards to form an outward flanging 21, a cavity 22 is formed in the steel bowl seat 2, an accommodating groove 23 is formed in the edge of the bottom of the cavity 22 in a machining mode, the steel ball 4 is arranged in the accommodating groove 23, a step hole 25 is formed in the bottom of the steel bowl seat 2 and penetrates through the cavity 22, an annular blocking edge 24 is formed between the upper portion of the step hole 25 and the accommodating groove 23, and an inclined plane is formed on one side, facing the steel ball 4, of the blocking edge 24;

a through hole 33 is processed in the center of the inner stop 3, an opening at the upper part of the inner stop 3 is bent outwards to form an outward flanging I31, the outer diameter of the outward flanging I31 is smaller than the inner diameter of the cavity 22, an arc transition surface 35 is processed at the joint of the outward flanging I31 and the outer circumferential surface of the inner stop 3, the arc transition surface 35 abuts against the steel ball 4, an annular groove 34 is arranged at the outer circumference of the lower part of the inner stop 3, the lower part of the inner stop 3 extends into the stepped hole 25, a locking ring 5 is installed in the annular groove 34 to axially limit the inner stop 3, the outer diameter of the inner stop 3 is matched with the inner diameter of the small middle hole of the stepped hole 25, the diameter of the locking ring 5 is larger than the depth of the annular groove 34, the difference between the inner diameter of the large hole of the stepped hole 25 and the outer diameter of the inner stop 3 is larger than the diameter of the locking ring 5, and a contraction seam 51 for enabling the locking ring 5 to elastically contract is arranged on the locking ring 5;

an inner conical surface 32 is processed at the joint of the flanging I31 and the through hole 33, an outer conical surface 11 is processed at the lower part of the upper cover 1, and the outer conical surface 11 is attached to the inner conical surface 32 to form a conical structure.

In particular use, the utility model will be described with reference to the accompanying drawings for the convenience of understanding;

during assembly, the steel bowl seat is sleeved and supported at the upper part of a frame front pipe of a bicycle, an annular accommodating groove is formed in the lower part of an inner cavity of the steel bowl seat, a plurality of steel balls are uniformly placed in the accommodating groove, an inner gear is installed in the middle of the inner cavity of the steel bowl seat, a flanging at the upper part of the inner gear abuts against the steel balls, the lower part of the inner gear is matched and extends into a step hole, the annular groove at the lower part of the inner gear extends into the position of a large hole of the step hole, a locking ring is installed in the annular groove to form axial limiting, and the upper cover is supported at the upper part of the inner gear through a conical structure; a downward pressure is formed on the upper cover after the front fork tube of the bicycle is locked, the upper cover is tightly attached to the inner gear through the conical structure after being stressed, and the steel ball is utilized to realize free rotation.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an improvement type bicycle bowl group structure which characterized in that: the steel bowl structure comprises a steel bowl seat (2), an inner stop (3) sleeved in the steel bowl seat (2), a steel ball (4) arranged between the steel bowl seat (2) and the inner stop (3), an upper cover (1) supported on the upper part of the inner stop (3) through a conical structure, and a locking ring (5) sleeved on the lower part of the inner stop (3);

the upper part of the steel bowl seat (2) is opened and is bent outwards to form an outward flanging (21), a cavity (22) is formed in the steel bowl seat (2), an accommodating groove (23) is formed at the bottom edge of the cavity (22) in a processing mode, the steel ball (4) is arranged in the accommodating groove (23), a stepped hole (25) formed in the bottom of the steel bowl seat (2) penetrates through the cavity (22), and an annular blocking edge (24) is formed between the upper part of the stepped hole (25) and the accommodating groove (23);

interior shelves (3) central processing through-hole (33), interior shelves (3) upper portion opening part outwards bends and forms flanging I (31), flanging I (31) with interior shelves (3) outer periphery junction processing arc transition face (35), arc transition face (35) support and lean on steel ball (4), the outer periphery department in interior shelves (3) lower part is equipped with ring channel (34), interior shelves (3) lower part stretches into in step hole (25), install in ring channel (34) locking ring (5) are right interior shelves (3) carry out the axial spacing.

2. An improved bicycle headset structure as claimed in claim 1, wherein: the outer diameter of the inner stop (3) is matched with the inner diameter of a middle small hole of the stepped hole (25), the diameter of the locking ring (5) is larger than the depth of the annular groove (34), and the radius difference between the inner diameter of a large hole of the stepped hole (25) and the outer diameter of the inner stop (3) is larger than the diameter of the locking ring (5).

3. An improved bicycle headset structure as claimed in claim 1, wherein: the locking ring (5) is provided with a contraction joint (51) which enables the locking ring to generate elastic contraction.

4. An improved bicycle headset structure as claimed in claim 1, wherein: and an inclined plane is processed on one side of the flange (24) facing the steel ball (4).

5. An improved bicycle headset structure as claimed in claim 1, wherein: the outer diameter of the outward flanging I (31) is smaller than the inner diameter of the cavity (22).

6. An improved bicycle headset structure as claimed in claim 1, wherein: the flanging I (31) and the connecting part of the through hole (33) are processed into an inner conical surface (32), the lower part of the upper cover (1) is processed into an outer conical surface (11), and the outer conical surface (11) and the inner conical surface (32) are attached to form a conical structure.