CN217730673U

CN217730673U - Bicycle five-way structure with integral press-in type transmission bearing with flanging

Info

Publication number: CN217730673U
Application number: CN202221830392.0U
Authority: CN
Inventors: 高煜昇
Original assignee: Prowheel Vehicle Material Shanghai Co ltd
Current assignee: Prowheel Vehicle Material Shanghai Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-11-04
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses a bicycle five-way structure with take integrative forced drive bearing of turn-ups, be in including bicycle five-way body and setting the drive bearing at the axle center hole both ends of bicycle five-way body, drive bearing is provided with the steel ball including setting up the holder between shell and inner shell on the holder, and the drive bearing both ends are provided with first oil blanket lid, second oil blanket lid, the external diameter of shell and the mutual adaptation of internal diameter in axle center hole, the one end that the shell is close to the axle center hole outside is provided with spacing flanging, the one end that the axle center hole outside was kept away from to the shell is provided with extension section of thick bamboo portion, the external diameter of extension section of thick bamboo portion and the mutual adaptation of internal diameter in axle center hole.

Description

Bicycle five-way structure with integral press-in type transmission bearing with flanging

Technical Field

The utility model relates to a bicycle accessory field, in particular to bicycle five-way structure with take integrative forced drive bearing of turn-ups.

Background

Referring to fig. 1 to 6, two ends of an axle hole 1 of a conventional bicycle five-way structure 20 are respectively equipped with a transmission bearing 10, a pair of

snap ring grooves

2a and 2b are arranged on inner walls of the two ends of the axle hole 1, and the transmission bearing 10 is axially limited in the axle hole 1 by a pair of

snap springs

3a and 3b matched with the

snap ring grooves

2a and 2 b. The transmission bearing 10 comprises a retainer 13 arranged between the outer shell 11 and the inner shell 12, a steel ball 14 is arranged on the retainer 13, and a first oil seal cover 15 and a second oil seal cover 16 are arranged at two ends of the transmission bearing 10. When the five-way structure of the bicycle is assembled, the snap spring 3a needs to be placed at the snap ring groove 2a on the inner side of the axle hole 1, the transmission bearing 10 is pressed into the axle hole 1 in a tightening mode, the other snap spring 3b is placed at the snap ring groove 2b on the outer side of the axle hole 1, the installation methods on the two sides of the axle hole 1 are consistent, and the installation is completed.

Drive bearing 10 is narrower because of 11 thickness L of shell, generally is 7mm during the use of actually riding for drive bearing 10 holds and leans on the power not enough, and drive bearing 10 has the axial motion trend, and drive bearing 10 is spacing through

jump ring

3a, 3b axial, leads to taking place extrusion friction between

jump ring

3a, 3b and the

snap ring groove

2a, 2b and produces the abnormal sound easily, and the assembly accessory is more, and the installation is complicated.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide a bicycle five-way structure with an integrated press-in type transmission bearing with a turnup, which is designed to solve the above problems.

The utility model solves the technical problem that the following technical scheme can be adopted to realize:

bicycle five-way structure with take turn-ups integrative forced drive bearing, be in including bicycle five-way body and setting the drive bearing at the axle center hole both ends of bicycle five-way body, drive bearing is provided with the steel ball including setting up the holder between shell and inner shell on the holder, and the drive bearing both ends are provided with first oil seal lid, second oil seal lid, the external diameter of shell and the mutual adaptation of internal diameter in axle center hole, the one end that the shell is close to the axle center hole outside is provided with spacing flanging, the one end that the axle center hole outside was kept away from to the shell is provided with extension section of thick bamboo portion, the external diameter of extension section of thick bamboo portion and the mutual adaptation of internal diameter in axle center hole.

In a preferred embodiment of the present invention, the extension tube portion is integrally formed with the housing.

In a preferred embodiment of the present invention, the length of the extension cylinder part is 7mm.

The utility model discloses a preferred embodiment, the junction between spacing flanging and the shell invaginates the ring channel, the tip inner wall in axle center hole be provided with the spacing annular platform of the interior protruding of invagination ring channel complex, be provided with the ring channel of stepping down on the tip of extension section of thick bamboo portion.

In a preferred embodiment of the present invention, the protruding surface of the inward protruding limiting annular table is a first arc structure, and the inward recessed surface of the inward recessed annular groove is a second arc structure correspondingly matched with the first arc structure.

In a preferred embodiment of the present invention, the housing and the limit flange are integrally formed.

Since the technical scheme as above is used, the utility model discloses a drive bearing has spacing flanging, but also is provided with the extension section of thick bamboo portion, gives up the jump ring of traditional structure, gives up after the jump ring, and axle center hole both sides also need not reprocess the jump ring groove, have eliminated traditional structure because take place between jump ring and the jump ring groove and extrude the abnormal sound that rubs and produce. And extension section of thick bamboo portion makes the utility model discloses increased the cooperation distance with axle center hole inner wall, promoted whole bearing and leaned on intensity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a prior art structure.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is an enlarged view at I of fig. 2.

Fig. 4 is an exploded view of the structure of fig. 2.

Fig. 5 is a schematic view of a prior art drive bearing.

Fig. 6 is an exploded view of the structure of fig. 5.

Fig. 7 is a schematic structural diagram of an embodiment of the present invention.

Fig. 8 is a sectional view of fig. 7.

Fig. 9 is an enlarged view at I of fig. 8.

Fig. 10 is an exploded view of the structure of fig. 8.

Fig. 11 is a schematic structural view of a drive bearing according to an embodiment of the present invention.

Fig. 12 is an exploded view of the structure of fig. 11.

Detailed Description

In order to make the utility model realize the technical means, creation characteristics, achievement purpose and efficiency are easy to understand and understand, the utility model is further explained below.

Referring to fig. 7 to 12, the bicycle bottom bracket structure with the integral press-in type transmission bearing with the flanging comprises a bicycle bottom bracket body 100 and transmission bearings 200 arranged at two ends of a shaft hole 110 of the bicycle bottom bracket body 100.

The driving bearing 200 includes a holder 230 disposed between the outer casing 210 and the inner casing 220, a steel ball 240 is disposed on the holder 230, and a first oil seal cover 250 and a second oil seal cover 260 are disposed at both ends of the driving bearing 200. The outer diameter of the housing 210 and the inner diameter of the spindle hole 110 are adapted to each other so that the transmission bearing 200 can be pressed into the spindle hole 110 and then interference-fitted thereto when assembled. The one end that shell 210 is close to the axle center hole 110 outside is provided with spacing flanging 211, shell 210 and spacing flanging 211 integrated into one piece, and the one end that shell 210 kept away from the axle center hole 110 outside is provided with extension section of thick bamboo portion 212, and the external diameter of extension section of thick bamboo portion 212 and the internal diameter of axle center hole 110 are each other adapted for can press in axle center hole 110 then both interference fit when transmission bearing 200 assembles. Extension section of thick bamboo portion 212 makes the utility model discloses increased the cooperation distance with axle center hole 110 inner wall, promoted whole strength of leaning on. The utility model discloses give up the jump ring of traditional structure, after giving up the jump ring, axle center hole both sides need not reprocess the jump ring groove yet, have eliminated traditional structure because take place the abnormal sound that the extrusion friction produced between jump ring and the snap ring groove. Extension section of thick bamboo portion 212 and shell 210 integrated into one piece in this embodiment, the length of extension section of thick bamboo portion 212 is 7mm, and shell 210 length 7mm itself adds, so the utility model discloses have 14mm and 110 interference fit's in the axle center hole effective fit length H, be prior art's effective fit length's twice, promoted whole bearing intensity. The limit burring 211 can unidirectionally limit the press-in length of the drive bearing 200.

In this embodiment, the connection between the limit outward flange 211 and the housing 210 is recessed into the annular groove 213, the end of the extension tube 212 is provided with a relief annular groove 212a, and the inner wall of the end of the spindle hole 110 is provided with an inward protruding limit annular boss 111 which is matched with the recessed annular groove 213. The convex surface of the inward convex limiting annular table 111 is a first arc-shaped surface structure 111a, and the inward concave surface of the inward concave annular groove 213 is a second arc-shaped surface structure 213a correspondingly matched with the first arc-shaped surface structure 111 a. The inner diameter of the inner convex limiting annular table 111 is slightly smaller than that of the spindle hole 110, so that the transmission bearing 200 is not influenced to be pressed into the spindle hole 110 and then to be in interference fit with the spindle hole 110. After the transmission bearing 200 is pressed into the spindle hole 110 in place, the transmission bearing 200 can be further limited from being separated outwards due to the mutual matching of the inward concave annular groove 213 and the inward convex limiting annular table 111. The yielding annular groove 212a can give way to the inward convex limiting annular table 111 during assembly, and can also play a role in pre-pressing and positioning.

The basic principles and main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Bicycle five-way structure with take integrative forced drive bearing of turn-ups, be in including bicycle five-way body and setting the drive bearing at the axle center hole both ends of bicycle five-way body, drive bearing is provided with the steel ball including setting up the holder between shell and inner shell on the holder, and the drive bearing both ends are provided with first oil seal lid, second oil seal lid, the external diameter of shell and the mutual adaptation of the internal diameter in axle center hole, its characterized in that, the one end that the shell is close to the axle center hole outside is provided with spacing flanging, the one end that the axle center hole outside was kept away from to the shell is provided with extension section of thick bamboo portion, the external diameter of extension section of thick bamboo portion and the mutual adaptation of internal diameter in axle center hole.

2. The bicycle bottom bracket assembly with integral drive bearing assembly having a burring of claim 1, wherein the extension tube portion is integrally formed with the housing.

3. The bottom bracket assembly with integral push-in drive bearing assembly having a burring according to claim 2, wherein the length of the extension cylinder part is 7mm.

4. The structure of claim 1, wherein the connection between the limit flange and the housing is a recessed annular groove, the inner wall of the end of the axle hole is provided with an inward protruding limit annular boss matched with the recessed annular groove, and the end of the extension tube part is provided with a abdicating annular groove.

5. The five-way structure of a bicycle with an integrated drive bearing having a flanged edge as claimed in claim 4, wherein the protruding surface of the inward protruding limiting annular boss is a first arc structure, and the inward recessed surface of the inward recessed annular groove is a second arc structure correspondingly matched with the first arc structure.

6. The bicycle bottom bracket assembly with integral drive bearing assembly having a flange as claimed in claim 1, wherein said housing and said limit flange are integrally formed.