CN108045492B - Quick-dismantling type bicycle middle shaft assembly and quick-dismantling method thereof - Google Patents
Quick-dismantling type bicycle middle shaft assembly and quick-dismantling method thereof Download PDFInfo
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- CN108045492B CN108045492B CN201711407775.0A CN201711407775A CN108045492B CN 108045492 B CN108045492 B CN 108045492B CN 201711407775 A CN201711407775 A CN 201711407775A CN 108045492 B CN108045492 B CN 108045492B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a quick-dismantling bicycle bottom bracket assembly and a quick-dismantling method thereof, and relates to bicycle parts, wherein the quick-dismantling bicycle bottom bracket assembly comprises a bottom bracket rod, a spline sleeve, a left bearing, a right bearing, a quick-dismantling shaft sleeve and a fixed shaft sleeve; the spline sleeve is sleeved with the left bearing outer ring and the right bearing and penetrates through the middle shaft rod; the external diameter of the spline sleeve is provided with an external spline, the spline sleeve is connected with the bicycle through a spline, and the left end of the spline sleeve is tightly locked with the right end of the quick-release shaft sleeve through threads. The invention improves the five-way threaded connection mode of the left bowl and the right bowl of the existing middle shaft and the bicycle into the spline connection and thread locking connection mode, greatly simplifies the installation and the disassembly of the middle shaft assembly, and reduces the difficulty of the disassembly and the assembly of the middle shaft assembly of the bicycle and the production and maintenance cost.
Description
Technical Field
The invention relates to bicycle parts, in particular to a quick-dismantling type bicycle bottom bracket assembly and a quick-dismantling method thereof.
Background
The bicycle can be used as a high-end athletic sports tool and a technical entertainment tool, and can also be used as a vehicle which is increasingly popular. The function of bicycles has shown a trend towards civilian vehicles as the popularity of bicycles increases. The bicycle spare and accessory parts are continuously improved in the direction of facilitating the assembly and disassembly, so that the bicycle repair and maintenance technology is no longer a patent for few professional athletes and professional players, and is popular with the common public users.
The five-way bicycle is positioned at the tooth disc position at the bottom of the bicycle frame, is externally connected with a seat tube, a lower tube, a crank shaft and two rear fork tubes of the bicycle frame, and is internally provided with a middle shaft assembly. The middle shaft assembly in the bicycle five-way is used as the most core part of the bicycle rotating mechanism, and is one of the hot spots for improving the parts of the existing bicycle.
Most of the prior bicycles adopt a middle shaft assembly which is a square hole integrated middle shaft. However, at present, left bowl and right bowl are arranged at two ends of the square hole integrated center shaft, external threads are respectively arranged on the left bowl and the right bowl, internal threads are arranged at two ends of the five-way pipe which is matched with the left bowl and the right bowl, the external threads of the left bowl and the right bowl are tightly connected with the internal threads of the five-way pipe in an interference fit manner, and the left bowl and the right bowl which are arranged in this way play a role in clamping the five-way fixed center shaft. However, in the screwing process of the left bowl and the right bowl in the forward and reverse directions, two people are required to simultaneously screw in the forward and reverse directions respectively with the help of special tools for the middle shaft, the whole installation and the disassembly of the middle shaft for clamping the five-way shaft are very complex, the installation and the disassembly of the middle shaft of the bicycle are usually completed by professionals at present with the help of various tools, and the tool processes comprise an adjustable spanner, a nipper pliers, a socket spanner, a rubber hammer and an inner hexagonal spanner, and also comprise a tool puller for specially disassembling a crank, a five-way cover disassembling tool, a middle shaft dust cover disassembling tool and other various very specialized middle shaft tools. The assembly and disassembly of the middle shaft not only increases the production cost of assembly and disassembly of the middle shaft, but also increases the difficulty of a common person in the process of assembly, disassembly and maintenance of the middle shaft of the bicycle.
Disclosure of Invention
The invention aims to provide a quick-dismantling type bicycle bottom bracket assembly and a quick-dismantling method thereof, which are used for solving the problem that the existing bottom bracket assembly is difficult to disassemble and assemble.
In order to achieve the above purpose, the technical scheme of the invention is that a quick-dismantling bicycle bottom bracket assembly is provided, which comprises a bottom bracket rod, a spline sleeve, a left bearing, a right bearing, a quick-dismantling shaft sleeve and a fixed shaft sleeve; the two ends of the middle shaft rod are respectively provided with a conical left square tenon and a conical right square tenon, the middle part of the middle shaft rod is provided with a left shaft neck and a right shaft neck, the left bearing and the right bearing are respectively arranged on the left shaft neck and the right shaft neck, and the middle shaft rod is sleeved in the spline sleeve through the left bearing and the right bearing; the spline sleeve is sleeved in a five-way bicycle, an external spline is arranged on the outer diameter of the spline sleeve, and an internal spline assembled with the external spline is arranged on the inner wall of the five-way bicycle; the right end of the spline sleeve is sleeved at the left end of the right bearing, the left end of the fixed shaft sleeve is sleeved at the right end of the right bearing, the right end face of the spline sleeve and the right end face of the spline are in flush cross sections, and the left end face of the fixed shaft sleeve, the spline sleeve and the right end of the spline are in butt joint and fixed in the middle of the right bearing; the outer diameter ring of the right end face of the quick-release shaft sleeve is axially provided with a quick-release connection outer flange, the inner diameter ring of the left end face of the spline sleeve is axially provided with a sleeve connection inner flange, and the quick-release connection outer flange is in threaded connection with the sleeve connection inner flange.
As a preferable technical scheme, the end face of the quick-release shaft sleeve is provided with two L-shaped grooves, the two L-shaped grooves are formed by vertical transverse grooves and longitudinal groove ends, the two longitudinal grooves of the two L-shaped grooves are arranged on two sides of the center shaft rod in parallel, the two transverse grooves of the two L-shaped grooves are respectively positioned at the upper end of one longitudinal groove and the lower end of the other longitudinal groove, one end, close to the transverse groove, of the longitudinal groove is provided with a spring blind hole, and one end, far away from the transverse groove, of the longitudinal groove is provided with a stress application vertical rod through hole; two thread locking parts are respectively arranged in the two L-shaped grooves, each thread locking part comprises a stress application vertical rod, a locking cross rod and a compression spring, each compression spring is arranged at one end part of the stress application vertical rod, and one end, close to each compression spring, of the stress application vertical rod is vertically connected with the end part of each locking cross rod into a whole.
As an optimization scheme, a quick-release check ring is arranged between the quick-release shaft sleeve and the left bearing, and the quick-release check ring is a threaded check ring.
As an optimization scheme, a fixed check ring is arranged between the fixed shaft sleeve and the right bearing, and the fixed check ring is an elastic check ring.
As an optimization scheme, the outer diameter ring of the left end face of the quick-dismantling shaft sleeve and the outer diameter ring of the right end face of the fixed shaft sleeve are respectively provided with a five-way left blocking outer flange and a five-way right blocking outer flange along the radial direction.
As an optimization scheme, bolt holes are formed in the left square tenons and the right square tenons, and crank connecting threads are formed in the inner walls of the bolt holes.
As an optimization scheme, the left bearing and the right bearing are ball bearings.
As an optimization scheme, the inner wall of the quick-release connecting outer flange is provided with internal threads, the outer diameter of the sleeve connecting inner flange is provided with external threads, and the right end of the quick-release shaft sleeve is connected with the left end of the spline sleeve through the internal threads of the quick-release connecting outer flange and the external threads of the sleeve connecting inner flange.
As another preferable technical scheme, the end face of the quick-release shaft sleeve is vertically provided with a locking through hole, the inner wall of the locking through hole is provided with a through hole annular thread, the inner flange of the sleeve connection is internally provided with a locking through hole connecting hole, the inner wall of the locking through hole connecting hole is provided with a connecting hole annular thread, and the locking through hole connecting hole and the locking through hole are of a concentric structure.
The invention relates to a quick-dismantling method of a quick-dismantling bicycle bottom bracket assembly, which comprises the following steps:
respectively disassembling a crank connected with the left square tenon and a crank connected with the right square tenon;
the two compressed compression springs are stretched to push the two boosting vertical rods to deviate from the compression springs to move, and the two locking cross rods are separated from the T-shaped intersection of the original transverse groove and the longitudinal groove;
the left hand and the right hand respectively hold the two locking cross bars and simultaneously rotate anticlockwise or clockwise, the two threaded locking pieces drive the quick-release shaft sleeve to rotate around the middle shaft rod through the L-shaped groove, and the quick-release shaft sleeve rotates to drive threads of the quick-release connecting outer flange to move along the thread line of the sleeve connecting inner flange until the quick-release shaft sleeve is completely separated from the bicycle five-way;
the right square tenon is pulled out horizontally and outwards, and the external spline of the spline sleeve slides out from the internal spline of the inner wall of the bicycle five-way pipe.
The invention has the following advantages:
the invention improves the prior threaded connection mode of the middle shaft and the five-way shaft into the connection mode of spline connection, thread locking, bolt stress application clamping or stress application rod screwing, greatly simplifies the installation and the disassembly of the middle shaft assembly, does not need professional personnel to operate the assembly and the disassembly of the middle shaft assembly, does not need professional middle shaft tools, and greatly reduces the difficulty of the assembly and the disassembly of the middle shaft assembly of the bicycle and the production cost thereof.
Drawings
FIG. 1 is an elevational view of a quick release bicycle bottom bracket assembly in accordance with embodiment 1.
Fig. 2 is a longitudinal cross-sectional view of a quick release bicycle bottom bracket assembly according to embodiment 1.
Fig. 3 is a front view of a quick release sleeve according to embodiment 1.
Fig. 4 is an enlarged view of a screw lock according to embodiment 1.
Fig. 5 is a cross-sectional view taken along A-A in fig. 3.
FIG. 6 is a side elevational view of a quick release bicycle bottom bracket assembly in accordance with embodiment 1.
FIG. 7 is an elevational view of a quick release bicycle bottom bracket assembly in accordance with embodiment 2.
Fig. 8 is a longitudinal cross-sectional view of a quick release bicycle bottom bracket assembly according to embodiment 2.
Fig. 9 is a front view of a quick release sleeve according to embodiment 2.
Fig. 10 is a cross-sectional view taken along A-A of the quick release sleeve of fig. 8.
FIG. 11 is a side elevational view of a quick release bicycle bottom bracket assembly in accordance with embodiment 2.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
The structure of the quick release bicycle bottom bracket assembly provided in this embodiment 1 will be described in detail with reference to the drawings.
Referring to fig. 1 to 6, the quick-release bicycle bottom bracket assembly includes a bottom bracket rod 1, a spline sleeve 2, a left bearing 3, a right bearing 4, a quick-release retainer ring 31, a fixed retainer ring 41, a quick-release sleeve 5 and a fixed sleeve 6; the two ends of the middle shaft rod 1 are respectively provided with a conical left square tenon 11 and a conical right square tenon 12, bolt holes are formed in the left square tenon 11 and the right square tenon 12, and crank connecting threads are formed in the inner walls of the bolt holes; the middle part of the middle shaft rod 1 is provided with a left shaft neck 13 and a right shaft neck 14, the inner ring of the left bearing 3 and the inner ring of the right bearing 4 are respectively fixed on the left shaft neck 13 and the right shaft neck 14, and the middle shaft rod 1 is fixedly sleeved in the spline sleeve 2 through the left bearing 3 and the right bearing 4; the outer diameter of the spline sleeve 2 is provided with an external spline 21, the inner wall of the bicycle five-way is provided with an internal spline, and the spline sleeve 2 is sleeved in the bicycle five-way through a spline; the right end of the spline sleeve 2 is sleeved at the left end of the right bearing 4, the left end of the fixed shaft sleeve 6 is sleeved at the right end of the right bearing 4, the right end face of the spline sleeve 2 and the right end face of the spline 21 are in a flush section, and the left end face of the fixed shaft sleeve 6 and the flush section of the right ends of the spline sleeve 2 and the spline 21 are fixedly butted at the middle part of the right bearing 4; a quick-release check ring 31 is arranged between the quick-release shaft sleeve 5 and the left bearing 3, and a fixed check ring 41 is arranged between the fixed shaft sleeve 6 and the right bearing 4; the external diameter circle of quick detach axle sleeve 5 right-hand member face is provided with quick detach and connects outer flange 50 along the axial, the internal diameter circle of spline sleeve 2 left end face is provided with muffjoint inward flange 22 along the axial, quick detach connects outer flange 50 inner wall and is provided with the internal thread, muffjoint inward flange 22 external diameter is provided with the external screw thread, quick detach axle sleeve 5 right-hand member with spline sleeve 2 left end is through the internal thread of quick detach connection outer flange 50 and muffjoint inward flange 22's external screw thread connection.
Preferably, the outer diameter ring of the left end face of the quick-dismantling shaft sleeve 5 and the outer diameter ring of the right end face of the fixed shaft sleeve 6 are respectively provided with a five-way left blocking outer flange 51 and a five-way right blocking outer flange 61 along the radial direction. The purpose of arranging the five-way left blocking flange and the five-way right blocking flange is to realize the blocking of the left side and the right side of the bicycle.
Preferably, the quick release retainer 31 is a threaded retainer.
Preferably, the left bearing 3 and the right bearing 4 are ball bearings.
Preferably, the fixed retainer 41 is a circlip.
As a preferred technical solution, the end face of the quick-release shaft sleeve 5 is provided with two L-shaped grooves 7, the two L-shaped grooves 7 are formed by vertical ends of a transverse groove 71 and a longitudinal groove 72, the two longitudinal grooves 72 of the two L-shaped grooves 7 are arranged on two sides of the center shaft rod 1 in parallel, the two transverse grooves 71 of the two L-shaped grooves 7 are respectively positioned at the upper end of one longitudinal groove 72 and the lower end of the other longitudinal groove 72, one end, close to the transverse groove, of the longitudinal groove 72 is provided with a spring blind hole 73, and the other end of the longitudinal groove 72 is provided with a stress application vertical rod through hole 74; two thread locking pieces 8 are respectively installed in the two L-shaped grooves 7, each thread locking piece 8 comprises a stress application vertical rod 81, a locking cross rod 82 and a compression spring 83, each compression spring 83 is arranged at one end of each stress application vertical rod 81, and one end, close to each compression spring 83, of each stress application vertical rod 81 is vertically connected with one end of each locking cross rod 82 to form an integrated structure.
The embodiment relates to a quick-dismantling method of a quick-dismantling bicycle bottom bracket assembly, and provides the quick-dismantling bicycle bottom bracket assembly, which comprises the following steps:
respectively disassembling a crank connected with the left square tenon 11 and a crank connected with the right square tenon 12;
the two locking cross bars 82 of the two threaded locking pieces 8 are respectively pulled out, the two compressed compression springs 83 are stretched to push the two stressing vertical rods 81 to move away from the compression springs 83, and the two locking cross bars 82 are respectively separated from the T-shaped intersection of the original transverse groove 71 and the longitudinal groove 72;
the left hand and the right hand respectively hold the two locking cross bars 82 and simultaneously rotate anticlockwise or clockwise, the two threaded locking pieces 8 drive the quick release shaft sleeve 5 to rotate around the middle shaft rod 1 through the L-shaped groove 7, and the quick release shaft sleeve 5 rotates to drive the threads of the quick release connecting outer flange 50 to move along the thread line of the sleeve connecting inner flange 22 until the quick release shaft sleeve 5 is completely separated from the bicycle five-way pipe;
the right tenon 12 is pulled out horizontally, and the external spline 21 of the spline sleeve 2 slides out from the internal spline of the five-way inner wall of the bicycle.
Example 2
The structure of the quick release bicycle bottom bracket assembly provided in this embodiment 2 will be described in detail with reference to the drawings.
Referring to fig. 7 to 11, the quick-release bicycle bottom bracket assembly includes a bottom bracket rod 1, a spline sleeve 2, a left bearing 3, a right bearing 4, a quick-release retainer ring 31, a fixed retainer ring 41, a quick-release sleeve 5 and a fixed sleeve 6; the two ends of the middle shaft rod 1 are respectively provided with a conical left square tenon 11 and a conical right square tenon 12, bolt holes are formed in the left square tenon 11 and the right square tenon 12, and crank connecting threads are formed in the inner walls of the bolt holes; the middle part of the middle shaft rod 1 is provided with a left shaft neck 13 and a right shaft neck 14, the inner ring of the left bearing 3 and the inner ring of the right bearing 4 are respectively fixed on the left shaft neck 13 and the right shaft neck 14, and the middle shaft rod 1 is fixedly sleeved in the spline sleeve 2 through the left bearing 3 and the right bearing 4; the outer diameter of the spline sleeve 2 is provided with an external spline 21, the inner wall of the bicycle five-way is provided with an internal spline, and the spline sleeve 2 is sleeved in the bicycle five-way through a spline; the right end of the spline sleeve 2 is sleeved at the left end of the right bearing 4, the left end of the fixed shaft sleeve 6 is sleeved at the right end of the right bearing 4, the right end face of the spline sleeve 2 and the right end face of the spline 21 are in a flush section, and the left end face of the fixed shaft sleeve 6 and the flush section of the right ends of the spline sleeve 2 and the spline 21 are fixedly butted at the middle part of the right bearing 4; a quick-release check ring 31 is arranged between the quick-release shaft sleeve 5 and the left bearing 3, and a fixed check ring 41 is arranged between the fixed shaft sleeve 6 and the right bearing 4; the external diameter circle of quick detach axle sleeve 5 right-hand member face is provided with quick detach and connects outer flange 50 along the axial, the internal diameter circle of spline sleeve 2 left end face is provided with muffjoint inward flange 22 along the axial, quick detach connects outer flange 50 inner wall and is provided with the internal thread, muffjoint inward flange 22 external diameter is provided with the external screw thread, quick detach axle sleeve 5 right-hand member with spline sleeve 2 left end is through the internal thread of quick detach connection outer flange 50 and muffjoint inward flange 22's external screw thread connection.
Preferably, the outer diameter ring of the left end face of the quick-dismantling shaft sleeve 5 and the outer diameter ring of the right end face of the fixed shaft sleeve 6 are respectively provided with a five-way left blocking outer flange 51 and a five-way right blocking outer flange 61 along the radial direction. The purpose of arranging the five-way left blocking flange and the five-way right blocking flange is to realize the blocking of the left side and the right side of the bicycle.
Preferably, the quick release retainer 31 is a threaded retainer.
Preferably, the left bearing 3 and the right bearing 4 are ball bearings.
Preferably, the fixed retainer 41 is a circlip.
As a preferable technical scheme, the end face of the quick-release shaft sleeve 5 is vertically provided with a locking through hole 52, the inner wall of the locking through hole 52 is provided with a through hole annular thread, the inner flange 22 of the sleeve connection is internally provided with a locking through hole connecting hole 53, the inner wall of the locking through hole connecting hole 53 is provided with a connecting hole annular thread, and the locking through hole connecting hole 53 and the locking through hole 52 are of a concentric structure.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. The quick-dismantling bicycle middle shaft assembly is characterized by comprising a middle shaft rod (1), a spline sleeve (2), a left bearing (3), a right bearing (4), a quick-dismantling shaft sleeve (5) and a fixed shaft sleeve (6); the two ends of the middle shaft rod (1) are respectively provided with a conical left square tenon (11) and a conical right square tenon (12), the middle part of the middle shaft rod (1) is provided with a left shaft neck (13) and a right shaft neck (14), the left bearing (3) and the right bearing (4) are respectively arranged on the left shaft neck (13) and the right shaft neck (14), and the middle shaft rod (1) is sleeved in the spline sleeve (2) through the left bearing (3) and the right bearing (4); the spline sleeve (2) is sleeved in a bicycle five-way pipe, an external spline (21) is arranged on the outer diameter of the spline sleeve (2), and an internal spline assembled with the external spline (21) is arranged on the inner wall of the bicycle five-way pipe; the right end of the spline sleeve (2) is sleeved at the left end of the right bearing (4), the left end of the fixed shaft sleeve (6) is sleeved at the right end of the right bearing (4), the right end face of the spline sleeve (2) and the right end face of the external spline (21) are flush sections, and the left end face of the fixed shaft sleeve (6) and the right end flush sections of the spline sleeve (2) and the external spline (21) are fixedly butted at the middle part of the right bearing (4); an outer diameter ring of the right end face of the quick-release shaft sleeve (5) is axially provided with a quick-release connection outer flange (50), an inner diameter ring of the left end face of the spline sleeve (2) is axially provided with a sleeve connection inner flange (22), and the quick-release connection outer flange (50) is in threaded connection with the sleeve connection inner flange (22);
two L-shaped grooves (7) are formed in the end face of the quick-release shaft sleeve (5), the two L-shaped grooves (7) are formed by the transverse grooves (71) and the end parts of the longitudinal grooves (72) vertically, the two longitudinal grooves (72) of the two L-shaped grooves (7) are arranged on two sides of the middle shaft rod (1) in parallel, the two transverse grooves (71) of the two L-shaped grooves (7) are respectively positioned at the upper end of one longitudinal groove (72) and the lower end of the other longitudinal groove (72), a spring blind hole (73) is formed in one end, close to the transverse groove, of the longitudinal groove (72), and a stress application vertical rod through hole (74) is formed in one end, far away from the transverse groove (71), of the longitudinal groove (72); two thread locking parts (8) are respectively installed in the two L-shaped grooves (7), each thread locking part (8) comprises a stress application vertical rod (81), a locking cross rod (82) and a compression spring (83), each compression spring (83) is arranged at one end of each stress application vertical rod (81), and one end, close to each compression spring (83), of each stress application vertical rod (81) is vertically connected with one end of each locking cross rod (82) to form an integrated structure.
2. The quick-release bicycle bottom bracket assembly according to claim 1, wherein the outer diameter ring of the left end surface of the quick-release shaft sleeve (5) and the outer diameter ring of the right end surface of the fixed shaft sleeve (6) are respectively provided with a five-way left blocking outer flange (51) and a five-way right blocking outer flange (61) along the radial direction.
3. The quick-release bicycle bottom bracket assembly according to claim 1, characterized in that a quick-release retainer ring (31) is arranged between the quick-release shaft sleeve (5) and the left bearing (3), and the quick-release retainer ring (31) is a threaded retainer ring.
4. Quick release bicycle bottom bracket assembly according to claim 1, characterized in that a retaining ring (41) is arranged between the retaining sleeve (6) and the right bearing (4), the retaining ring (41) being a circlip.
5. The quick release bicycle bottom bracket assembly of claim 1, wherein the left square tenon (11) and the right square tenon (12) are provided with bolt holes inside, and the inner walls of the bolt holes are provided with crank connecting threads.
6. Quick release bicycle bottom bracket assembly according to claim 1, characterized in that the left bearing (3) and the right bearing (4) are ball bearings.
7. The quick-release bicycle bottom bracket assembly according to claim 1, wherein the end surface of the quick-release shaft sleeve (5) is vertically provided with a locking through hole (52), the inner wall of the locking through hole (52) is provided with a through hole annular thread, the sleeve connecting inner flange (22) is internally provided with a locking through hole connecting hole (53), the inner wall of the locking through hole connecting hole (53) is provided with a connecting hole annular thread, and the locking through hole connecting hole (53) and the locking through hole (52) are of a concentric structure.
8. A quick release method of a quick release bicycle bottom bracket assembly as defined in any one of claims 1 to 6, wherein the quick release method comprises the steps of:
respectively disassembling a crank connected with the left square tenon (11) and a crank connected with the right square tenon (12);
the two locking cross bars (82) of the two threaded locking pieces (8) are respectively pulled out, the two compressed compression springs (83) are stretched to push the two boosting vertical rods (81) to move away from the compression springs (83), and the two locking cross bars (82) are respectively separated from the T-shaped intersection of the original transverse groove (71) and the longitudinal groove (72);
the left hand and the right hand respectively hold the two locking cross bars (82) to rotate anticlockwise or clockwise at the same time, the two threaded locking pieces (8) drive the quick-release shaft sleeve (5) to rotate around the middle shaft rod (1) through the L-shaped groove (7), and the quick-release shaft sleeve (5) rotates to drive the threads of the quick-release connecting outer flange (50) to move along the threads of the sleeve connecting inner flange (22) until the quick-release shaft sleeve (5) is completely separated from the bicycle five-way;
the right tenon (12) is pulled out horizontally and outwards, and the external spline (21) of the spline sleeve (2) slides out from the internal spline of the five-way inner wall of the bicycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407775.0A CN108045492B (en) | 2017-12-22 | 2017-12-22 | Quick-dismantling type bicycle middle shaft assembly and quick-dismantling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407775.0A CN108045492B (en) | 2017-12-22 | 2017-12-22 | Quick-dismantling type bicycle middle shaft assembly and quick-dismantling method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN108045492A CN108045492A (en) | 2018-05-18 |
| CN108045492B true CN108045492B (en) | 2023-06-30 |
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| CN201711407775.0A Active CN108045492B (en) | 2017-12-22 | 2017-12-22 | Quick-dismantling type bicycle middle shaft assembly and quick-dismantling method thereof |
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| CN206218129U (en) * | 2016-12-03 | 2017-06-06 | 浙江超级电气科技有限公司 | Bicycle bottom bracket moment sensing mechanism |
| CN206634138U (en) * | 2017-03-20 | 2017-11-14 | 利奇机械工业股份有限公司 | The device for quickly disassembling of bicycle quick |
| CN207931910U (en) * | 2017-12-22 | 2018-10-02 | 史非 | A kind of fast disassembly type bicycle middle shaft component |
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2017
- 2017-12-22 CN CN201711407775.0A patent/CN108045492B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB370283A (en) * | 1931-07-17 | 1932-04-07 | Bayliss Wiley And Company Ltd | Improvements relating to bottom-bracket bearing mountings for the crank-axles of cycles |
| CN1814499A (en) * | 2005-01-31 | 2006-08-09 | 李政 | Rapid-folding crank for bicycle |
| CN203864905U (en) * | 2014-04-04 | 2014-10-08 | 陈海军 | Balance bike and bike integrated middle shaft device |
| CN205707124U (en) * | 2016-02-18 | 2016-11-23 | 上海赤焰实业有限公司 | A kind of bicycle center shaft structure |
| CN206218129U (en) * | 2016-12-03 | 2017-06-06 | 浙江超级电气科技有限公司 | Bicycle bottom bracket moment sensing mechanism |
| CN206634138U (en) * | 2017-03-20 | 2017-11-14 | 利奇机械工业股份有限公司 | The device for quickly disassembling of bicycle quick |
| CN207931910U (en) * | 2017-12-22 | 2018-10-02 | 史非 | A kind of fast disassembly type bicycle middle shaft component |
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| Publication number | Publication date |
|---|---|
| CN108045492A (en) | 2018-05-18 |
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