CN108032952B - Assembly structure of five-way and rear bottom fork of bicycle - Google Patents
Assembly structure of five-way and rear bottom fork of bicycle Download PDFInfo
- Publication number
- CN108032952B CN108032952B CN201711111460.1A CN201711111460A CN108032952B CN 108032952 B CN108032952 B CN 108032952B CN 201711111460 A CN201711111460 A CN 201711111460A CN 108032952 B CN108032952 B CN 108032952B
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- Prior art keywords
- rear bottom
- bottom fork
- way
- shaft hole
- bicycle
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- 230000005540 biological transmission Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 11
- 238000003466 welding Methods 0.000 abstract description 11
- 230000006978 adaptation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Classifications
-
- 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
- B62K19/00—Cycle frames
- B62K19/18—Joints between frame members
- B62K19/24—Screwed joints
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a five-way and rear bottom fork mounting structure of a bicycle, which comprises a bicycle frame, wherein a five-way part of the bicycle frame is provided with a five-way shaft hole; the rear bottom fork is characterized by further comprising a rear bottom fork, wherein a shaft hole is formed in the five-way connecting end of the rear bottom fork, and the five-way shaft hole and the shaft hole are coaxially arranged; the five-way connecting end of the rear bottom fork is detachably and fixedly arranged with the five-way part; the rear bottom fork comprises a single rear bottom fork or two rear bottom forks; the detachable assembly structure adopts the spigot structure to be matched with the screw to enable the positioning to be accurate, the implementation assembly process is simple relative to the welding process, the deformation of the five-way and rear bottom fork caused by heat generated in the welding process is effectively avoided, and the effective size assurance is improved for producing high-end bicycles or high-precision matched gear transmission bicycles.
Description
Technical Field
The invention belongs to the field of bicycles, and particularly relates to a bicycle five-way and rear bottom fork assembly structure.
Background
The five-way part of the bicycle refers to the position of the frame for installing the dental tray, the five-way part is connected with a middle pipe, a seat pipe and the like, the five-way part is positioned at the bottommost part of the frame, and the part to be installed of the five-way part is a center shaft; the rear bottom fork is a main supporting part of a rear wheel of the bicycle; in the prior art, a rear bottom fork is often directly connected to a five-way part in a welding mode;
at present, part of high-end vehicles adopt gear transmission bicycles with more accurate transmission, and the gear transmission bicycles need more severe assembly error requirements, however, in the existing welding process, the heat easily generates mechanical dimension errors on deformation generated by both the five-way and the rear bottom fork, so that the transmission performance and the mechanical strength of the bicycles are affected; the quality requirement of the high-end vehicle type of the gear transmission type is difficult to realize, and the welding process is not environment-friendly.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a detachable assembly structure of a bicycle five-way and a rear bottom fork.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a five-way and rear bottom fork mounting structure for a bicycle, which is characterized in that: the bicycle comprises a bicycle frame, wherein a five-way part of the bicycle frame is provided with a five-way shaft hole; the rear bottom fork is characterized by further comprising a rear bottom fork, wherein a shaft hole is formed in the five-way connecting end of the rear bottom fork, and the five-way shaft hole and the shaft hole are coaxially arranged; the five-way connecting end of the rear bottom fork and the five-way part are detachably and fixedly installed.
Further, the rear bottom fork comprises a single rear bottom fork or two rear bottom forks; the two rear bottom forks are a first rear bottom fork and a second rear bottom fork respectively, and the first rear bottom fork and the second rear bottom fork are respectively combined and installed on two sides of the five-way part.
Further, a middle shaft is also arranged in the five-way part; the five-way shaft hole on the five-way part is rotationally connected with the middle shaft through a first bearing; the shaft hole of the second rear bottom fork is rotationally connected with the middle shaft through a second bearing; the aperture of the shaft hole on the first rear bottom fork is larger than the shaft diameter of the middle shaft, and one end of the middle shaft passes through the shaft hole on the first rear bottom fork; bicycle cranks are respectively arranged at two ends of the middle shaft.
Further, the joint surface of the first rear bottom fork and the five-way part is fastened and attached by at least one screw; one side of the five-way part, which is close to the first rear bottom fork, is provided with a female spigot, one side of the first rear bottom fork, which is close to the five-way part, is provided with a male spigot, and the male spigot is buckled in the female spigot.
And the second rear bottom fork is tightly attached to the joint surface of the five-way part through at least two screws.
Further, the five-way part and the second rear bottom fork form a closed axle box between the first bearing and the second bearing in an assembled state.
Further, the female spigot recess dimension is greater than the male spigot projection dimension; and the female spigot and the male spigot are circular in profile.
The beneficial effects are that: the invention has the following advantages:
(1) The detachable assembly structure adopts the spigot structure to be matched with the screw so as to ensure accurate positioning, the implementation assembly process is simple relative to the welding process, the deformation of the five-way and rear bottom forks caused by heat generated in the welding process is effectively avoided, and the effective size assurance is improved for producing high-end bicycles or high-precision matched gear transmission bicycles;
(2) The welding process is omitted, the environment is protected, and no welding lines exist;
(3) The production cost is reduced, the production efficiency is improved, and the operation and batch use are convenient.
Drawings
Fig. 1 is a schematic diagram of an assembly structure of the five-way section and the rear bottom fork.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The scheme is particularly suitable for a gear transmission bicycle with more accurate transmission, and the rear bottom fork of the gear transmission bicycle needs more severe assembly error requirements, so that the structural design of the gear transmission bicycle needs to avoid the deformation of heat generated in the welding process on the five-way and the rear bottom fork, and the five-way and rear bottom fork mounting structure of the bicycle as shown in the attached figure 1 comprises a bicycle frame, wherein a five-way part 8 of the bicycle frame is provided with a five-way shaft hole; the rear bottom fork is characterized by further comprising a rear bottom fork, wherein a shaft hole 6 is formed in the five-way connecting end of the rear bottom fork, and the five-way shaft hole and the shaft hole 6 are coaxially arranged; the five-way connecting end of the rear bottom fork is detachably and fixedly installed with the five-way part 8, deformation of the five-way and the rear bottom fork caused by heat generated in the welding process is effectively avoided by adopting a detachable connecting mode, the effective size assurance is improved for producing a high-end bicycle or a high-precision matched gear transmission bicycle, and the specific assembly structure of the rear bottom fork is described in detail below.
The rear bottom fork comprises a single rear bottom fork or two rear bottom forks, the two rear bottom forks are respectively a first rear bottom fork 1 and a second rear bottom fork 10, the first rear bottom fork 1 and the second rear bottom fork 10 are respectively arranged on two sides of the five-way part 8 in a clinging combination mode, and the specific fastening mode is also described below;
a middle shaft 13 is also arranged in the five-way part 8; the five-way shaft hole on the five-way part 8 is rotationally connected with the middle shaft 13 through the first bearing 5; the shaft hole 6 of the second rear bottom fork 10 is rotationally connected with the middle shaft 13 through a second bearing 12; the aperture of the shaft hole 6 on the first rear bottom fork 1 is larger than the shaft diameter of the middle shaft 13, and one end of the middle shaft 13 passes through the shaft hole 6 on the first rear bottom fork 1; bicycle cranks are respectively arranged at two ends of the middle shaft 13, and a closed axle box 14 is formed between the first bearing 5 and the second bearing 12 in an assembled state of the five-way part 8 and the second rear bottom fork 10.
The specific fastening and limiting modes of the first rear bottom fork 1 and the second rear bottom fork 10 in the scheme are as follows: the first rear bottom fork 1 is tightly attached to the joint surface 4 of the five-way part 8 through at least one screw 7; the female spigot 3 is arranged on one side of the five-way part 8, which is close to the first rear bottom fork 1, the male spigot 2 is arranged on one side of the first rear bottom fork 1, which is close to the five-way part 8, wherein the female spigot 3 is a limiting pit machined on a joint surface, in the embodiment, the male spigot 2 is a limiting boss machined on the joint surface, and the male spigot 2 is buckled in the female spigot 3, so that the female spigot 3 is matched with a screw to play a role in accurate positioning, and the concave size of the female spigot 3 is larger than the protruding size of the male spigot 2, so that the assembly allowance is reserved conveniently, and the male spigot 2 can be ensured to be completely sunk into the female spigot 3; and female tang 3 with public tang 2 is circular profile, only need guarantee its female tang 3 with public tang 2 axiality can play the limiting displacement, has avoided unnecessary size control.
The joint surface 4.1 of the second rear bottom fork 10 and the five-way part 8 is fastened and attached by at least two screws 7, and as the second rear bottom fork 10 is connected with the second bearing 12, the second rear bottom fork 10 does not need a spigot structure to limit any more, thereby simplifying the assembly structure.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (4)
1. A bicycle five-way and rear bottom fork assembly structure is characterized in that: comprises a bicycle frame, wherein a five-way part (8) of the bicycle frame is provided with a five-way shaft hole; the rear bottom fork is characterized by further comprising a rear bottom fork, wherein a shaft hole (6) is formed in the five-way connecting end of the rear bottom fork, and the five-way shaft hole and the shaft hole (6) are coaxially arranged; the five-way connecting end of the rear bottom fork is detachably and fixedly arranged with the five-way part (8);
the rear bottom fork comprises two rear bottom forks; the two rear bottom forks are a first rear bottom fork (1) and a second rear bottom fork (10) respectively, and the first rear bottom fork (1) and the second rear bottom fork (10) are respectively combined and installed on two sides of the five-way part (8);
a middle shaft (13) is also arranged in the five-way part (8); the five-way shaft hole on the five-way part (8) is rotationally connected with the middle shaft (13) through a first bearing (5); the shaft hole (6) of the second rear bottom fork (10) is rotationally connected with the middle shaft (13) through a second bearing (12); the aperture of the shaft hole (6) on the first rear bottom fork (1) is larger than the shaft diameter of the middle shaft (13), and one end of the middle shaft (13) passes through the shaft hole (6) on the first rear bottom fork (1); bicycle cranks are respectively arranged at two ends of the middle shaft (13);
the joint surface (4) of the first rear bottom fork (1) and the five-way part (8) is tightly attached by at least one screw (7); a female spigot (3) is arranged on one side of the five-way part (8) close to the first rear bottom fork (1), a male spigot (2) is arranged on one side of the first rear bottom fork (1) close to the five-way part (8), and the male spigot (2) is buckled in the female spigot (3);
the female spigot (3) is a limiting pit machined on the joint surface (4), and the male spigot (2) is a limiting boss machined on the joint surface (4).
2. The bicycle bottom bracket and rear fork assembly structure of claim 1, wherein: the second rear bottom fork (10) is tightly attached to the joint surface (4.1) of the five-way part (8) through at least two screws (7).
3. The bicycle bottom bracket and rear bottom fork assembly structure of claim 2, wherein: a closed axle box (14) is formed between the five-way part (8) and the second rear bottom fork (10) in an assembled state and the first bearing (5) and the second bearing (12).
4. A bicycle bottom bracket and rear bottom fork assembly structure as in claim 3, wherein: the concave size of the female spigot (3) is larger than the protruding size of the male spigot (2); and the female spigot (3) and the male spigot (2) are circular in outline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111460.1A CN108032952B (en) | 2017-11-13 | 2017-11-13 | Assembly structure of five-way and rear bottom fork of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111460.1A CN108032952B (en) | 2017-11-13 | 2017-11-13 | Assembly structure of five-way and rear bottom fork of bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108032952A CN108032952A (en) | 2018-05-15 |
| CN108032952B true CN108032952B (en) | 2024-03-19 |
Family
ID=62092804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711111460.1A Active CN108032952B (en) | 2017-11-13 | 2017-11-13 | Assembly structure of five-way and rear bottom fork of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108032952B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109018152B (en) * | 2018-07-24 | 2024-03-26 | 无锡岚凌卓维动力科技有限公司 | Rear bottom fork damping system of electric power-assisted bicycle |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526778U (en) * | 1991-09-10 | 1993-04-06 | 栄輪業株式会社 | Connection structure between bicycle hanger rug and chain stay |
| CN2362772Y (en) * | 1997-11-10 | 2000-02-09 | 姚亮 | Shock-damping bicycle |
| CN2413992Y (en) * | 2000-03-02 | 2001-01-10 | 泰亿机械工业股份有限公司 | Sleeve type five-way tube |
| CN2839086Y (en) * | 2005-10-13 | 2006-11-22 | 孙云南 | Bicycle rear fork |
| CN103387031A (en) * | 2012-05-08 | 2013-11-13 | 迪亚蒙有限公司 | Bicycle frame |
| CN203450289U (en) * | 2013-08-08 | 2014-02-26 | 太宇工业股份有限公司 | Integrated connector for cushioning type bicycle frame |
| CN105270528A (en) * | 2015-09-29 | 2016-01-27 | 北京摩拜科技有限公司 | Chainless bicycle and integrated bottom bracket thereof |
| CN206579772U (en) * | 2017-03-28 | 2017-10-24 | 佛山市佳德兴自行车科技有限公司 | The body frame structure for automotive of axle-driven bicycle |
| CN207631418U (en) * | 2017-11-13 | 2018-07-20 | 慈溪浩然驱动科技有限公司 | A kind of bicycle bottom bracket and rear chain stay assembling structure |
-
2017
- 2017-11-13 CN CN201711111460.1A patent/CN108032952B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526778U (en) * | 1991-09-10 | 1993-04-06 | 栄輪業株式会社 | Connection structure between bicycle hanger rug and chain stay |
| CN2362772Y (en) * | 1997-11-10 | 2000-02-09 | 姚亮 | Shock-damping bicycle |
| CN2413992Y (en) * | 2000-03-02 | 2001-01-10 | 泰亿机械工业股份有限公司 | Sleeve type five-way tube |
| CN2839086Y (en) * | 2005-10-13 | 2006-11-22 | 孙云南 | Bicycle rear fork |
| CN103387031A (en) * | 2012-05-08 | 2013-11-13 | 迪亚蒙有限公司 | Bicycle frame |
| CN203450289U (en) * | 2013-08-08 | 2014-02-26 | 太宇工业股份有限公司 | Integrated connector for cushioning type bicycle frame |
| CN105270528A (en) * | 2015-09-29 | 2016-01-27 | 北京摩拜科技有限公司 | Chainless bicycle and integrated bottom bracket thereof |
| CN206579772U (en) * | 2017-03-28 | 2017-10-24 | 佛山市佳德兴自行车科技有限公司 | The body frame structure for automotive of axle-driven bicycle |
| CN207631418U (en) * | 2017-11-13 | 2018-07-20 | 慈溪浩然驱动科技有限公司 | A kind of bicycle bottom bracket and rear chain stay assembling structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108032952A (en) | 2018-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210220 Address after: 214000 No.9 Xinqin Road, Xinwu District, Wuxi City, Jiangsu Province Applicant after: WUXI TRUCKRUN INTELLIGENT MOTOR Co.,Ltd. Address before: 2 Zhangding North Road, Shangcai village, Shengshan Town, Cixi City, Ningbo City, Zhejiang Province Applicant before: CIXI HAORAN DRIVE TECHNOLOGY Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |