TWI596033B - A Bottom Bracket For A Bicycle - Google Patents

Description

Bicycle five-way bowl

The present invention relates to a bowl, and more particularly to a bicycle five-way bowl.

Generally, the bicycle set can be mounted on the frame, for example, a five-way pipe connecting transmission mechanism, and a bearing is arranged in the bowl for the spindle to be rotatably disposed therein.

Please refer to Taiwan Patent No. M415098, the bicycle five-way bowl includes a pipe member, two ring members disposed in the pipe member, and two bearings, each of the ring members is provided with an outer ring surface, and the outer ring surface is recessed with a ring groove. The ring groove has two opposite groove wall faces; each of the bearings is disposed within a range in which the groove wall faces extend.

The bicycle five-way bowl of the above-mentioned prior art does not have any supporting structure supported by the bearing and the pipe at the groove of the ring, so the structural strength at the groove of the ring is weak, and each ring member is pressed into the pipe member. When the ring member fails to uniformly disperse the pressing force of the pipe member, causing the pressing force of the pipe member to press the groove of the ring, thereby causing the pipe member to deform; further, when each ring member is twisted into the pipe member, the ring groove is It is easily deformed by torque. Therefore, the bicycle five-way bowl set of the above-mentioned prior art has a lack of structural strength and short service life.

Please refer to Taiwan Patent Publication No. 201700338, the support member is provided with a bearing mounting portion, and the bearing mounting portion is provided with a plurality of plural notches which reduce contact with the outer race of the bearing and a plurality of ribs which are in contact with the outer race of the bearing. . However, the plurality of ribs have a roundness error corresponding to the shape of the outer race, and therefore the size of the plurality of ribs must be accurately manufactured, resulting in an increase in processing cost; in addition, the plurality of notches of the bearing mounting portion are reduced It is in contact with the outer race of the bearing, so the bearing cannot be fastened to the support member, resulting in a smooth transmission of the bearing.

Therefore, it is necessary to provide a novel and progressive bicycle five-way bowl to solve the above problems.

The main object of the present invention is to provide a bicycle five-way bowl set, which has strong structural strength, good buffering effect, low processing cost, and can prevent deformation of the bearing receiving member and maintain the smooth operation of the transmission mechanism.

In order to achieve the above object, the present invention provides a bicycle five-way bowl set, comprising: at least one pipe body for wearing through a five-way pipe, each pipe body is provided with an axial through hole and an axial direction. a buffer section in the five-way pipe, the buffer section is provided with at least one supporting structure and at least one recess; at least one bearing is disposed on the through hole, and the at least one bearing radially overlaps at least partially with the at least one supporting structure And at least partially overlapping the at least one recess; wherein, when the buffer segment of the at least one tube is disposed in the five-way tube, the at least one support structure radially supports the five-way tube and the at least one recess The five-way pipe is radially spaced apart by at least one buffer space.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1 through 4, there is shown a preferred embodiment of the present invention. The bicycle five-way bowl set 1 of the present invention includes at least one tubular body 10 and at least one bearing 20.

The at least one pipe body 10 is disposed in the five-way pipe 2, and each of the pipe bodies 10 is provided with an axial through hole 11 and a buffer portion 12 axially disposed in the five-way pipe 2, the buffer The segment 12 is provided with at least one supporting structure 121 and at least one concave portion 122; the at least one bearing 20 is disposed on the through hole 11 at least partially overlapping the at least one supporting structure 121 in the radial direction and at least partially overlapping the at least one concave portion 122; The at least one support structure 121 radially supports the five-way pipe 2 and the at least one recess 122 and the five-way pipe 2 when the buffer section 12 of the at least one pipe body 10 is disposed in the five-way pipe 2 Radially spaced at least one buffer space. Thereby, the structural strength of the buffer section 12 is strong and effectively buffers the force (for example, the pressing force and the torsional force) of the five-way pipe 2 on each of the bearings 20, so that the pipe body 10 and each of the bearings 20 are not easily deformed. It has a long service life and low processing cost. Further, each of the bearings 20 can be fastened to each of the tubes 10 for smooth transmission.

In this embodiment, the number of the at least one tube 10 is two, and the number of the at least one bearing 20 is two. The two bearings 20 are respectively disposed in the buffer section 12 of the two tubes 10 . The tube body 10 can be, but is not limited to, a material such as plastic or metal.

Each of the tubes 10 defines an axis L. The at least one supporting structure 121 is not perpendicular to the axis L; the at least one supporting structure 121 may be disposed obliquely, parallel to the axis L, or any combination thereof; In this embodiment, the at least one supporting structure 121 is disposed in parallel with the axis L, thereby having a better structure to resist the force of the five-way pipe 2.

The at least one support structure 121 and the at least one recess 122 are looped on the buffer section 12; preferably, the at least one support structure 121 and the at least one recess 122 are misaligned, thereby being firmly connected to the five-way tube 2 And equally divided forces. In this embodiment, the at least one supporting structure 121 is plural, the at least one concave portion 122 is plural, and the plurality of supporting structures 121 and the plurality of concave portions 122 may be a single row or a plurality of rows of matrix arrays, annular arrays, radiation arrays, and the like; Each of the support structures 121 may be a circular body, a polygonal body, a square body, a stripe shape or any combination of the above-mentioned geometric shapes. In this embodiment, each of the support structures 121 is an elastically deformable elongated body; preferably, each The support structure 121 has the same cross-sectional area to uniformly disperse the force of the five-way pipe 2. The axial dimension of at least a portion of the plurality of support structures 121 is greater than the axial dimension of the bearing 20, wherein the plurality of support structures 121 can be long and short, such as a portion of the support structure 121 having an axial dimension greater than the axial dimension of the bearing 20, The axial dimension of a portion of the support structure 121 is less than or equal to the axial dimension of the bearing 20. In the embodiment, the plurality of support structures 121 are uniformly arranged in length to uniformly disperse the force of the five-way pipe 2 to prevent the bearing 20 from being deformed. , and firmly connected with the five-way pipe 2.

Each of the tubes 10 is further provided with a tapered portion 13 extending from the buffer portion 12, and the tapered portion 13 is inserted into the five-way tube 2, so that each of the tubes 10 can be smoothly guided into the tube Five passes inside the tube 2.

The at least one support structure 121 is provided with at least one reference line 123, and the at least one reference line 123 is disposed adjacent to the tapered section 13. In this embodiment, each of the support structures 121 is provided with a plurality of reference lines 123; The line 123 can be printed on each of the support structures 121. In this embodiment, each of the reference lines 123 is a groove structure that is radially recessed toward the through hole 11 , and the depth of each of the reference lines 123 is smaller than the concave portion. The depth of 122 is such that each of the tubes 10 can be aligned with the reference line 123 to the edge of the five-way tube 2 for smooth penetration without being easily skewed.

Each of the tubes 10 is provided with an outer edge 14 having an outer diameter larger than the inner diameter of the tube of the five-way tube 2 as a limit and facilitating the removal of each of the tubes 10.

The two tubes 10 can be integrally formed or detachably connected to each other. In the embodiment, the tubes 10 are detachably connected to each other, so that the two tubes 10 are assembled into the five tubes 2. The two tubes 10 can be connected in a screw-locking manner. In this embodiment, the two tubes 10 are connected to each other in a tightly fitting manner, and one of the tubes 10 is provided with a connecting portion 15 through which another tube 10 is disposed. The other tubular body 10 is provided with an inner circumferential surface 16 , and the connecting portion 15 is provided with an abutting portion 151 extending radially opposite to the through hole 11 and resisting the inner circumferential surface 16 , so that the two The tube body 10 can be firmly connected and can be quickly disassembled. Preferably, the abutting portion 151 is a deformable ring body. In this embodiment, the abutting portion 151 is detachably disposed on the rubber ring of the connecting portion 15, so that the two pipe bodies 10 are closely matched with each other. A limiting portion 152 is disposed on the opposite side of the abutting portion 151. The limiting portion 152 can be a ring-shaped protrusion that is continuously or discontinuously disposed on the connecting portion 15 . In the embodiment, the limiting portion is 152 is a ring protrusion continuously provided on the connecting portion 15 and arranged along the axis in the connecting portion 15 for restricting displacement of the abutting portion 151 relative to the connecting portion 15 .

1‧‧‧Bicycle five-way bowl
2‧‧‧5-way pipe
3‧‧‧ mandrel
10‧‧‧ tube body
11‧‧‧Perforation
12‧‧‧Buffer section
121‧‧‧Support structure
122‧‧‧ recess
123‧‧‧ baseline
13‧‧‧Constriction
14‧‧‧ outer edge
15‧‧‧ Connection section
151‧‧‧Resistance
152‧‧‧Limited
16‧‧‧ inner circumference
20‧‧‧ bearing
L‧‧‧ axis

1 is a perspective view of a preferred embodiment of the present invention. 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a cross-sectional view of a preferred embodiment of the present invention. Figure 4 is a cross-sectional view showing another direction of a preferred embodiment of the present invention.

1‧‧‧Bicycle five-way bowl

3‧‧‧ mandrel

10‧‧‧ tube body

12‧‧‧Buffer section

121‧‧‧Support structure

122‧‧‧ recess

123‧‧‧ baseline

13‧‧‧Constriction

Claims (10)

A bicycle five-way bowl comprises: at least one pipe body for being worn in a five-way pipe, each pipe body being provided with an axial through hole and a buffer portion axially disposed in the five-way pipe The buffer section is provided with at least one supporting structure and at least one recess; at least one bearing is disposed at the through hole, at least partially overlapping the at least one supporting structure in the radial direction and at least partially overlapping the at least one recess; wherein, when The at least one support structure radially supports the five-way pipe and the at least one recess is radially spaced apart from the five-way pipe by at least one buffer space when the buffer section of the at least one pipe body is disposed in the five-way pipe. The bicycle five-way bowl set according to claim 1, wherein the tube body defines an axis, and the at least one support structure does not perpendicular to the axis. The bicycle five-way bowl set according to claim 1, wherein the pipe body is further provided with a tapered section extending from the buffer section, the tapered section being inserted into the five-way pipe. The bicycle five-way bowl set according to claim 3, wherein the at least one support structure is provided with at least one reference line, and the at least one reference line is disposed adjacent to the tapered section. The bicycle five-way bowl set according to claim 1, wherein the at least one support structure has an axial dimension greater than an axial dimension of the bearing. The bicycle five-way bowl set according to claim 1, wherein the at least one recess is offset from the at least one support structure. The bicycle five-way bowl set according to claim 4, wherein the tube body defines an axis, the at least one supporting structure is not perpendicular to the axis; the at least one supporting structure is plural, and the at least one concave portion is a plurality of support structures and the plurality of recessed portions are disposed in the buffer section; the plurality of recesses are offset from the plurality of support structures; each of the plurality of support structures has the same cross-sectional area; and the at least one support structure has an axial dimension greater than The axial dimension of each of the bearings; each of the tubes is provided with an outer edge, the outer diameter of the outer edge is larger than the inner diameter of the tube of the five-way tube; the at least one reference line is a groove that is radially recessed toward the perforation direction a groove structure, the depth of the at least one reference line being less than the depth of the recess. The bicycle five-way bowl set according to any one of claims 1 to 7, wherein the number of the at least one tubular body is two, and the number of the at least one bearing is two, and the two bearings are respectively disposed on the two tubular bodies In the buffer section, the two-tube system is detachably connected to each other. The bicycle five-way bowl set according to claim 8, wherein one of the tubes is provided with a connecting portion for inserting another tube body, and the other tube body is provided with an inner peripheral surface, and the connecting portion is provided with an abutting portion. The abutting portion extends radially toward the perforation and is abuttable against the inner peripheral surface. The bicycle five-way bowl set according to claim 9, wherein the abutting portion is a deformable ring body, and the connecting portion is further provided with two limiting portions disposed on opposite sides of the abutting portion.