CN108238190B - Bowl group expander of bicycle - Google Patents
Bowl group expander of bicycle Download PDFInfo
- Publication number
- CN108238190B CN108238190B CN201611202905.2A CN201611202905A CN108238190B CN 108238190 B CN108238190 B CN 108238190B CN 201611202905 A CN201611202905 A CN 201611202905A CN 108238190 B CN108238190 B CN 108238190B
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- section
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- pressing
- bolt
- cylinder
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/04—Fork crowns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/18—Connections between forks and handlebars or handlebar stems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention relates to a bicycle bowl group expander, comprising: the expansion cylinder comprises a bottom, a plurality of pressing and abutting pieces arranged at the bottom at intervals and a guide connection section opposite to one end of the bottom, wherein a screw hole penetrates through the bottom, and the plurality of pressing and abutting pieces surround a containing chamber; a packing tube, through which a through hole is arranged, wherein the packing tube comprises a packing section with an outer diameter larger than the radial distance of the accommodating chamber and a butting section connected with the packing section, and at least one of the butting section and the guide connection section gradually shrinks towards the bottom; a bolt penetrates through the through hole and is screwed with the screw hole; wherein, when the bolt is adjusted to make the abutting section approach to the bottom and penetrate into the chamber, the pressing section radially presses and expands the plurality of pressing and abutting pieces.
Description
Technical Field
The present invention relates to a bicycle, and more particularly to a bowl group expander for a bicycle.
Background
The bicycle is generally connected between the front fork and the stem by a spreader. The expander in the prior art includes a cover, a plurality of separately disposed non-return plates and an elastic ring, wherein one end of the cover extends to form a supporting portion, the plurality of non-return plates are annularly disposed on the outer periphery of the supporting portion, and the elastic ring is sleeved on the outer periphery of the supporting portion.
In the prior art, the supporting portion supports the plurality of non-return plates to press against the inner wall of a vertical tube. However, in the prior art, the plurality of non-return plates are separately disposed, and only the elastic ring is used to fix the plurality of non-return plates, so that the plurality of non-return plates are easy to slide and rotate relative to the supporting portion, and the non-uniform stress is easy to be assembled and disassembled with the inner wall of the vertical tube due to insufficient friction force, and is easy to be separated.
Therefore, there is a need for a new and improved bicycle headset expander that solves the above problems.
Disclosure of Invention
The invention aims to provide a bowl group expander of a bicycle, which can provide the effects of stable combination and easy disassembly and assembly.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a bicycle bowl group expander, comprising: the expansion cylinder comprises a bottom, a plurality of pressing and abutting pieces arranged at the bottom at intervals and a guide connection section opposite to one end of the bottom, wherein a screw hole penetrates through the bottom, and the plurality of pressing and abutting pieces surround a containing chamber; a compressing cylinder is provided with a through hole in a penetrating way, the compressing cylinder comprises a compressing section with the outer diameter larger than the radial distance of the accommodating chamber and an abutting section connected with the compressing section, and at least one of the abutting section and the guide connecting section gradually shrinks towards the bottom direction; a bolt penetrates through the through hole and is screwed with the screw hole; wherein, when the bolt is adjusted to make the abutting section approach to the bottom and penetrate into the containing chamber, the pressing section radially presses and expands the plurality of pressing and abutting pieces; the peripheral surface of each pressing and abutting piece is provided with at least one convex part, the expansion cylinder penetrates into the vertical pipe for combination, and when each pressing and abutting piece is not in contact with the pressing cylinder, each convex part abuts against the inner wall of the vertical pipe; in the extending direction of the pressing and abutting pieces from one end to the other end of the bottom, the convex parts radially protrude any other part of the outer peripheral surface of each pressing and abutting piece in the extending direction.
The guide connection section is gradually reduced towards the bottom direction, and the abutting connection section is gradually reduced towards the direction far away from the tightening section.
The bicycle bowl group expander further comprises a ring piece sleeved with the bolts, and the ring piece is positioned outside the expanding cylinder.
The expansion cylinder is provided with a groove between two adjacent pressing and resisting sheets, and the groove is provided with an arc groove bottom.
The bowl group expander of the bicycle further comprises a cover part, wherein a first thread section is arranged on the peripheral wall of the tightening cylinder, and a second thread section which is screwed with the first thread section is arranged on the cover part.
The cover piece is provided with a through hole in a penetrating mode, the bolt is provided with a bolt head with the diameter larger than the aperture of the through hole, the bolt head is located between the cover piece and the through hole, and the bolt head is provided with a joint groove facing the through hole.
The bowl group expander of the bicycle further comprises a ring body, the tightening cylinder is annularly provided with a ring groove, the ring body is embedded in the ring groove and protrudes into the tightening cylinder, and the first thread section of the tightening cylinder is positioned between the ring groove and the through hole.
The cover piece comprises a neck section and an expansion section, the expansion section is closer to the through hole than the neck section, the second thread section is arranged on the expansion section, and the outer diameter of the neck section is smaller than the inner diameter of the ring body.
The expansion cylinder, the tightening cylinder, the bolt and the cover piece are coaxially arranged; the expanding cylinder is horn-shaped; the bolt is further provided with a threaded section, the ring piece is sleeved on the threaded section, and the threaded hole is positioned between the ring piece and the tightening cylinder; the expanding cylinder is provided with a cutting groove between two adjacent pressing resisting sheets, and the cutting groove is provided with an arc groove bottom; at least one convex part is arranged on the periphery of each abutting piece, each convex part is arc-shaped and is positioned on the abutting section, the expansion cylinder penetrates into a vertical pipe for combination, and each convex part abuts against the inner wall of the vertical pipe; the packing tube is provided with a groove, and the first thread section is annularly arranged on the inner wall of the groove; the annular groove is positioned on the first thread section; the cover piece is provided with a through hole in a penetrating way, the bolt is provided with a bolt head with the diameter larger than the aperture of the through hole, the bolt head is positioned between the cover piece and the through hole, the bolt head is provided with a joint groove facing the through hole, and the joint groove is a polygonal hole; the through hole is annularly provided with a plurality of angle grooves at the other end hole opposite to the bolt; the cover part is also provided with a cover edge which is opposite to the expansion section and is connected with the neck section, and the outer diameter of the cover edge is larger than that of the expansion cylinder.
The invention has the beneficial effects that: the bowl group expander of the bicycle can provide the effects of stable combination and easy disassembly and assembly.
Drawings
Fig. 1 is a perspective view of a preferred embodiment of the present invention.
Fig. 2 is an exploded view of a preferred embodiment of the present invention.
FIG. 3 is a cross-sectional view of a preferred embodiment of the present invention.
FIG. 4 is an operation diagram of a preferred embodiment of the present invention.
Reference numerals: 1: a bowl set expander for a bicycle; 2: a vertical tube; 3: a screw locking tool; 10: an expansion cylinder; 11: a bottom; 12: a pressing and resisting sheet; 121: a convex portion; 13: a conductive connection section; 14: a screw hole; 15: a housing chamber; 16: grooving; 161: the bottom of the arc groove; 20: a tightening cylinder; 21: through holes are formed; 22: a tightening section; 23: an abutment section; 25: a first thread segment; 26: a groove; 27: a ring groove; 30: a bolt; 31: a threaded segment; 32: a bolt head; 321: an engaging groove; 40: a ring member; 50: a cover member; 51: a second thread segment; 52: a through hole; 521: an angular groove; 53: a neck section; 54: an expansion section; 55: the cover rim 60: a ring body.
Detailed Description
The following description is given by way of example only, and is not intended to limit the scope of the invention.
Referring to fig. 1 to 4, which show a preferred embodiment of the present invention, the bicycle bowl group expander 1 of the present invention comprises an expanding cylinder 10, a tightening cylinder 20 and a bolt 30.
The expanding cylinder 10 comprises a bottom 11, a plurality of urging pieces 12 arranged at the bottom 11 at intervals, and a guide section 13 opposite to one end of the bottom 11, wherein the bottom 11 is provided with a screw hole 14 in a penetrating way, and the plurality of urging pieces 12 enclose a containing chamber 15; the packing tube 20 is provided with a through hole 21, the packing tube 20 comprises a packing section 22 with an outer diameter larger than the radial distance of the accommodating chamber 15 and an abutting section 23 connected with the packing section 22, and at least one of the abutting section 23 and the guiding section 13 is gradually reduced towards the bottom 11; the bolt 30 penetrates through the through hole 21 and is screwed with the screw hole 14; wherein, when the bolt 30 is adjusted to make the abutting section 23 approach the bottom 11 and penetrate into the accommodating chamber 15, the pressing section 22 radially presses and expands the plurality of pressing pieces 12. Therefore, the plurality of pressing and abutting pieces 12 can generate enough friction force with the inner wall of the vertical pipe 2 for combination, thereby achieving the purposes of fastening combination and convenient disassembly and assembly.
Preferably, the bottom 11 can be a ring, a C-shaped, a square, etc., and in this embodiment, is a ring. The expanding cylinder 10 is trumpet-shaped, and the peripheral surface of each pressing and propping piece 12 is provided with at least one convex part 121; in the extending direction of each pressing-resisting piece 12 connecting one end of the bottom 11 to the other end, each protrusion 121 radially protrudes from any other portion of the outer peripheral surface of each pressing-resisting piece 12 in the extending direction. The invention does not limit the number of the protrusions 121, and the force-bearing area of the protrusions 121 and the number of the protrusions 121 can be adjusted according to the requirement, in this embodiment, the number of the protrusions 121 is one. Preferably, each protrusion 121 is arc-shaped and located at the fastening section 22, so that each pressing-resisting piece 12 is firmly fastened to the vertical pipe 2 in the radial direction, wherein the expanding cylinder 20 penetrates into the vertical pipe 2 for combination, and when each pressing-resisting piece 12 is not in contact with the pressing cylinder 20, each protrusion 121 abuts against the inner wall of the vertical pipe 2, so that when the expanding cylinder 10 is not expanded by the pressing cylinder 20, the expanding cylinder 10 can be positioned with the vertical pipe 2. Preferably, the expanding cylinder 10 further defines a sectional groove 16 between two adjacent pressing sheets 12, the sectional groove 16 has an arc groove bottom 161, so that each pressing sheet 12 has a better elastic expanding range.
Preferably, the guiding section 13 tapers toward the bottom 11, and the abutting section 23 tapers away from the tightening section 22, so as to provide a smooth penetration of the tightening barrel 20 into the chamber 15. The guiding section 13 and the abutting section 23 are tapered multi-angle surfaces or arc surfaces, which are tapered arc surfaces in this embodiment, to provide better guiding effect.
The bicycle headset expander 1 further comprises a ring member 40 sleeved on the bolt 30, wherein the ring member 40 is located outside the expanding cylinder 10. The bolt 30 is provided with a threaded section 31, the ring member 40 is sleeved on the threaded section 31, and the screw hole 14 is located between the ring member 40 and the tightening barrel 20, so that the bolt 30 is prevented from being separated from the screw hole 14. The ring member 40 can be selectively disposed on the threaded section 31, and the positioning effect of the ring member 40 can be improved by disposing the ring member on the threaded section 31 in this embodiment.
The bowl group expander 1 of the bicycle further comprises a cover 50, the peripheral wall of the packing tube 20 is provided with a first thread section 25, the cover 50 is provided with a second thread section 51 screwed with the first thread section 25; in the embodiment, the fastening barrel 20 is provided with a groove 26, and the first thread section 25 is disposed around the inner wall of the groove 26. Thereby combining the cover member 50 and the packing barrel 20 and guiding the cover member 50 to move relative to the through hole 21 in the packing barrel 20.
The bowl group expander 1 of the bicycle comprises an annular body 60, the packing tube 20 is annularly provided with an annular groove 27, the annular body 60 is embedded in the annular groove 27 and protrudes into the packing tube 20, and a first thread section 25 of the packing tube 20 is positioned between the annular groove 27 and the through hole 21; wherein the annular groove 27 is optionally formed on the first thread section 25, in this embodiment, the annular groove 27 is formed on the first thread section 25 to prevent the second thread section 51 from being disengaged from the fastening barrel 20.
In detail, a through hole 52 is formed through the cover 50, the bolt 30 is provided with a bolt head 32 having a diameter larger than the aperture of the through hole 21, the bolt head 32 is located between the cover 50 and the through hole 21, the bolt head 32 is provided with a coupling groove 321 facing the through hole 52, so that a screw locking tool 3 for screw locking can pass through the through hole 52 to be coupled with the coupling groove 321 to adjust the bolt 30. Preferably, the engagement groove 321 is a polygonal hole, and the through hole 52 is annularly provided with a plurality of angular grooves 521 at the opposite end toward the bolt 30, whereby the screw-locking tool 3 can stably adjust the engagement groove 321 and the cover 50.
Preferably, the cover 50 further includes a neck portion 53 and an enlarged portion 54 connected to the neck portion 53, the enlarged portion 54 is closer to the through hole 21 than the neck portion 53, the second thread portion 51 is disposed on the enlarged portion 54, and the outer diameter of the neck portion 53 is smaller than the inner diameter of the ring body 60, so that the neck portion 53 can be far away from the packing barrel 20, and the enlarged portion 54 is prevented from being separated from the packing barrel 20.
The lid 50 is further provided with a lid rim 55 opposite to the enlarged section 54 and connected to the neck section 53, the lid rim 55 has an outer diameter larger than that of the expansion cylinder 10 for supporting the opening of the standpipe 2.
Preferably, the expanding cylinder 10, the tightening cylinder 20, the bolt 30 and the cover 50 are coaxially disposed to stably adjust the relative movement of the above four components.
In practical use, in an assembled state, the expanding cylinder 10 penetrates the vertical tube 2, the pressing pieces 12 support the inner wall of the vertical tube 2, the cover rim 55 supports the tube opening end of the vertical tube 2, and the screw locking tool 3 rotates the bolt 30 to drive the expanding cylinder 10 to move towards the tightening cylinder 20 so as to radially expand the pressing pieces 12 to press against the inner wall of the vertical tube 2; conversely, the bolt 30 is reversed, the pressing cylinder 20 is far away from the containing chamber 15 to release the state that the plurality of pressing resisting sheets 12 press the vertical tube 2, so that the bowl group expander 1 of the bicycle is separated from the vertical tube 2; therefore, the user can simply and quickly disassemble and assemble the bowl group expander 1 of the bicycle.
Claims (9)
1. A bicycle bowl group expander for incorporation in a standpipe, comprising:
the expansion cylinder comprises a bottom, a plurality of forced abutting pieces arranged at the bottom at intervals and a guide connecting section opposite to one end of the bottom, wherein the bottom is provided with a screw hole in a penetrating way, and the plurality of forced abutting pieces surround a containing chamber;
a packing tube, through which a through hole is arranged, wherein the packing tube comprises a packing section with an outer diameter larger than the radial distance of the accommodating chamber and a butting section connected with the packing section, and at least one of the butting section and the guide connection section gradually shrinks towards the bottom;
a bolt, which passes through the through hole and is screwed with the screw hole;
wherein, when the bolt is adjusted to make the abutting section approach to the bottom and penetrate into the containing chamber, the pressing section radially presses and expands the plurality of pressing and abutting pieces;
the peripheral surface of each pressing and abutting piece is provided with at least one convex part, the expansion cylinder penetrates into the vertical pipe for combination, and when each pressing and abutting piece is not in contact with the pressing cylinder, each convex part abuts against the inner wall of the vertical pipe;
in the extending direction of the pressing and abutting pieces from one end to the other end of the bottom, the convex parts radially protrude any other part of the outer peripheral surface of each pressing and abutting piece in the extending direction.
2. The headset expander of a bicycle according to claim 1, wherein said docking section tapers in a direction toward said base section and said abutment section tapers in a direction away from said tightening section.
3. The headset expander for a bicycle according to claim 1, further comprising a ring for receiving said bolt, said ring being located outside said expander cylinder.
4. The headset expander of claim 1 wherein said expanding cylinder further defines a slot between two adjacent ones of said urging pieces, said slot defining an arcuate slot bottom.
5. The bicycle bowl group expander as in claim 1, further comprising a cover member, said compression sleeve peripheral wall having a first threaded section, said cover member having a second threaded section threaded to said first threaded section.
6. The headset expander for a bicycle according to claim 5, wherein the lid member has a through hole, the bolt has a bolt head with a diameter larger than the aperture of the through hole, the bolt head is located between the lid member and the through hole, and the bolt head has an engaging groove facing the through hole.
7. The bicycle headset expander of claim 5 further comprising a ring member, wherein the tightening barrel is annularly provided with an annular groove, the ring member is embedded in the annular groove and protrudes into the tightening barrel, and the first thread section of the tightening barrel is located between the annular groove and the through hole.
8. The bicycle headset expander of claim 7 wherein said cover member includes a neck section and an enlarged section, said enlarged section being closer to said bore than said neck section, said second threaded section being located in said enlarged section, said neck section having an outer diameter less than an inner diameter of said ring body.
9. The headset extender of claim 8 wherein said extender cylinder, said tightening cylinder, said bolt and said cover member are coaxially disposed; the expanding cylinder is horn-shaped; the bolt is further provided with a threaded section, the ring piece is sleeved on the threaded section, and the threaded hole is positioned between the ring piece and the tightening cylinder; the expanding cylinder is provided with a cutting groove between two adjacent pressing resisting sheets, and the cutting groove is provided with an arc groove bottom; each convex part is arc-shaped and is positioned on the tightening section; the packing tube is provided with a groove, and the first thread section is annularly arranged on the inner wall of the groove; the annular groove is positioned on the first thread section; the cover piece is provided with a through hole in a penetrating way, the bolt is provided with a bolt head with the diameter larger than the aperture of the through hole, the bolt head is positioned between the cover piece and the through hole, the bolt head is provided with a joint groove facing the through hole, and the joint groove is a polygonal hole; the through hole is annularly provided with a plurality of angle grooves at the other end hole opposite to the bolt; the cover part is also provided with a cover edge which is opposite to the expansion section and is connected with the neck section, and the outer diameter of the cover edge is larger than that of the expansion cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202905.2A CN108238190B (en) | 2016-12-23 | 2016-12-23 | Bowl group expander of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202905.2A CN108238190B (en) | 2016-12-23 | 2016-12-23 | Bowl group expander of bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108238190A CN108238190A (en) | 2018-07-03 |
| CN108238190B true CN108238190B (en) | 2019-12-24 |
Family
ID=62703465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611202905.2A Active CN108238190B (en) | 2016-12-23 | 2016-12-23 | Bowl group expander of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108238190B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112078710B (en) * | 2020-08-24 | 2021-12-21 | 拓肯兴业股份有限公司 | Steering head bowl group |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232887Y (en) * | 1995-10-16 | 1996-08-14 | 林文华 | Fixer of handlebar verticle tube for bicycle |
| TWM387054U (en) * | 2010-04-06 | 2010-08-21 | shi-jie Zhang | Head tube fastening configuration |
| CN201670324U (en) * | 2010-04-26 | 2010-12-15 | 张世杰 | Vertical tube fixing structure |
| CN201890327U (en) * | 2010-09-10 | 2011-07-06 | 宁波嘉隆工业有限公司 | Headset locking device |
-
2016
- 2016-12-23 CN CN201611202905.2A patent/CN108238190B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108238190A (en) | 2018-07-03 |
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