CN209535364U - A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle - Google Patents
A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle Download PDFInfo
- Publication number
- CN209535364U CN209535364U CN201920244141.6U CN201920244141U CN209535364U CN 209535364 U CN209535364 U CN 209535364U CN 201920244141 U CN201920244141 U CN 201920244141U CN 209535364 U CN209535364 U CN 209535364U
- Authority
- CN
- China
- Prior art keywords
- central spindle
- axle sleeve
- nylon
- bowl
- crank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
The utility model discloses a kind of ultralight composite Fast Installation Middle shaft assemblies of child's bicycle, it include the central spindle that can be freely rotated compatible with frame five-through pipe, the left end of central spindle is fixed with left crank, its right end is fixed with right crank, nylon orthodontic bowl is set in left crank end between central spindle and frame five-through pipe, nylon reverse tooth bowl is set in right crank end between central spindle and frame five-through pipe, first DU axle sleeve is set between nylon orthodontic bowl and central spindle, 2nd DU axle sleeve is set between nylon reverse tooth bowl and central spindle, PU gasket is set between nylon orthodontic bowl and the first DU axle sleeve；The left six faces rule of central spindle, the left curved surface of central spindle, the right curved surface of central spindle and central spindle right six faces rule are set in central spindle, left crank is matched with the left six faces rule of central spindle, right crank is matched with the right six faces rule of central spindle, the inner end of first DU axle sleeve offsets with the left curved surface of central spindle matches, and the inner end of the 2nd DU axle sleeve offsets with the right curved surface of central spindle matches.The advantage is that: easy to assembly, manufacturing cost is low, light weight.
Description
Technical field
The utility model relates to a kind of components of bicycle, and especially a kind of ultralight composite of child's bicycle is quick
Middle shaft assembly is installed.
Background technique
Middle shaft assembly is the core rotatable parts of bicycle, will determine the conversion of the driving force of whole bicycle.It is existing
Middle shaft assembly in the market can be broadly divided into following several by its frame mode difference: first is that pearl nest separate type, this mode is most
It is more cheap for common and cost, but performance is bad, it is easy to damage；Followed by bearing-type, this mode is easy to make, is suitable for batch
Property production, rotate smooth, the disadvantage is that service life is not grown, assembly and disassembly maintenance is inconvenient, is easy to produce abnormal sound；It is thirdly
Spline bearing formula, this mode rotating effect is preferable, long service life, the disadvantage is that higher cost, while assembly and disassembly maintenance is not
It is convenient；Also one is integrated spline bearing formula, the excellent benefits of formula using effect, and assembly and disassembly is all very convenient, but due to
Its complex manufacturing technology, manufacturing cost is higher, thus can not industrial mass production so that ordinary consumer can not make
With.Therefore, the Middle shaft assembly structure of existing bicycle is further improved.
Summary of the invention
It is simple that for the current state of the art, the technical problem to be solved by the utility model is to provide structures, assembling side
Just, the ultralight composite Fast Installation Middle shaft assembly of the low a kind of child's bicycle of manufacturing cost.
Technical solution adopted by the utility model to solve the above technical problems is as follows:
A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle, includes to be adapted with frame five-through pipe
The central spindle that can be freely rotated, the left end of central spindle is fixed with left crank, and right end is fixed with right crank, central spindle and frame five-through
Left crank end is provided with nylon orthodontic bowl between pipe, right crank end is provided with the anti-tooth of nylon between central spindle and frame five-through pipe
Bowl, is provided with the first DU axle sleeve, the 2nd DU axle sleeve is provided between nylon reverse tooth bowl and central spindle between nylon orthodontic bowl and central spindle,
PU gasket is provided between nylon orthodontic bowl and the first DU axle sleeve；The left six faces rule of central spindle, the left curved surface of central spindle, axis are provided in central spindle
The right curved surface of core and the right six faces rule of central spindle, left crank are matched with the left six faces rule of central spindle, and right crank and the right six faces rule of central spindle match
It closes, the inner end of the first DU axle sleeve offsets with the left curved surface of central spindle matches, and the inner end of the 2nd DU axle sleeve offsets with the right curved surface of central spindle matches.
The technical measures of optimization further include:
It is provided with first axle set spline outside the first above-mentioned DU axle sleeve, is provided with and first axle sleeve in nylon orthodontic bowl
Compatible first spline of spline；The second axle sleeve spline is provided with outside 2nd DU axle sleeve, is provided in nylon reverse tooth bowl and institute
State compatible second spline of the second axle sleeve spline.
The first intrados compatible with the left curved surface of central spindle is provided in the first above-mentioned DU axle sleeve；It is set in 2nd DU axle sleeve
It is equipped with the second intrados compatible with the right curved surface of the central spindle.
The periphery of above-mentioned nylon orthodontic bowl is formed with the first external screw thread with the frame five-through pipe bolt；The anti-tooth of nylon
The periphery of bowl is formed with the second external screw thread with the frame five-through pipe bolt.
Above-mentioned left crank is mutually fixed by left fixing bolt and the left end of central spindle, and the left end of central spindle is formed with left inside screw thread；
Right crank is mutually fixed by right fixing bolt and the right end of central spindle, and the right end of central spindle is formed with right internal screw thread.
A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle of the utility model, structurally reasonable, assembling
Convenient, manufacturing cost is low, is supported between frame five-through pipe and central spindle using nylon orthodontic bowl, nylon reverse tooth bowl, and in nylon
First DU axle sleeve and PU gasket are set between orthodontic bowl and central spindle, the 2nd DU axle sleeve is set between nylon reverse tooth bowl and central spindle,
Self-lubricating bearing is constituted by DU axle sleeve, guarantees the flexible rotating of central spindle；Nylon orthodontic bowl, nylon reverse tooth bowl, the first DU axle sleeve,
2nd DU axle sleeve and PU gasket are all made of nonmetallic materials, can mitigate the quality of product significantly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the decomposition texture schematic diagram of the utility model；
Fig. 3 is the portion A enlarged drawing in Fig. 2；
Fig. 4 is that the portion B ought scheme greatly in Fig. 2；
Fig. 5 is the sectional structure chart (removal crank) of the utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
It is as shown in Figures 1 to 5 the structural schematic diagram of the utility model,
Appended drawing reference therein are as follows: the left six faces rule of frame five-through pipe 1, central spindle 2, left inside screw thread 2a, right internal screw thread 2b, central spindle
21, the right six faces rule 24 of the left curved surface 22 of central spindle, the right curved surface 23 of central spindle, central spindle, left crank 31, right crank 32, nylon orthodontic bowl 41, the
One spline 41a, the first external screw thread 41b, nylon reverse tooth bowl 42, the second spline 42a, the second external screw thread 42b, the first DU axle sleeve
51, the first axle sleeve spline 51a, the first intrados 51b, the 2nd DU axle sleeve 52, the second axle sleeve spline 52a, the second intrados 52b,
PU gasket 6, left fixing bolt 71, right fixing bolt 72.
As shown in Figures 1 to 5,
A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle includes suitable with 1 phase of frame five-through pipe
The central spindle 2 that can be freely rotated matched, the left end of central spindle 2 are fixed with left crank 31, and right end is fixed with right crank 32, central spindle 2
Left crank end is provided with nylon orthodontic bowl 41 between frame five-through pipe 1, in right crank between central spindle 2 and frame five-through pipe 1
End is provided with nylon reverse tooth bowl 42, is provided with the first DU axle sleeve 51 between nylon orthodontic bowl 41 and central spindle 2, nylon reverse tooth bowl 42 with
It is provided with the 2nd DU axle sleeve 52 between central spindle 2, is provided with PU gasket 6 between nylon orthodontic bowl 41 and the first DU axle sleeve 51；Central spindle 2
On be provided with the left six faces rule 21 of central spindle, the left curved surface 22 of central spindle, the right curved surface 23 of central spindle and the right six faces rule 24 of central spindle, left crank 31 with
Six faces of central spindle left side rule 21 match, and right crank 32 is matched with the right six faces rule 24 of central spindle, the inner end of the first DU axle sleeve 51 and central spindle
Left curved surface 22, which offsets, matches, and the inner end of the 2nd DU axle sleeve 52 offsets with the right curved surface 23 of central spindle matches.
In embodiment, it is provided with first axle set spline 51a outside the first DU axle sleeve 51, is provided in nylon orthodontic bowl 41 and institute
State the compatible first spline 41a of the first axle sleeve spline 51a；The second axle sleeve spline 52a, Buddhist nun are provided with outside 2nd DU axle sleeve 52
Second spline 42a compatible with the second axle sleeve spline 52a is provided in imperial reverse tooth bowl 42.
In embodiment, first intrados 51b compatible with the left curved surface 22 of central spindle is provided in the first DU axle sleeve 51；Second
Second intrados 52b compatible with the right curved surface 23 of the central spindle is provided in DU axle sleeve 52.
In embodiment, the periphery of nylon orthodontic bowl 41 is formed with the first external screw thread with 1 bolt of frame five-through pipe
41b；The periphery of nylon reverse tooth bowl 42 is formed with the second external screw thread 42b with 1 bolt of frame five-through pipe.
In embodiment, left crank 31 is mutually fixed by left fixing bolt 71 and the left end of central spindle 2, and the left end of central spindle 2 is formed with
Left inside screw thread 2a；Right crank 32 is mutually fixed by right fixing bolt 72 and the right end of central spindle 2, and the right end of central spindle 2 is formed with spiral shell in the right side
Line 2b.
The Middle shaft assembly of the utility model, central spindle 2 is axially across frame five-through pipe 1, and both ends are to using nylon orthodontic bowl 41
It is supported with nylon reverse tooth bowl 42, the first DU axle sleeve 51 and PU gasket 6, nylon anti-tooth is set between nylon orthodontic bowl 41 and central spindle 2
2nd DU axle sleeve 52 is set between bowl 42 and central spindle 2, forms self-lubricating bearing using axle sleeve made of DU material, ensure that central spindle
The flexibility of 2 rotations.DU material is the sliding antifriction material using plastics as solid lubricant.
Nylon orthodontic bowl 41 and frame five-through pipe 1 are spirally connected fixation, and the first DU axle sleeve 51 passes through first with nylon orthodontic bowl 41
Axle sleeve spline 51a and the cooperation of the first spline 41a are assembled together, and avoid the rotation of the first DU axle sleeve 51；Likewise, Buddhist nun
Imperial reverse tooth bowl 42 and frame five-through pipe 1 are spirally connected fixation, and the 2nd DU axle sleeve 52 passes through the second axle sleeve spline 52a with nylon reverse tooth bowl 42
Cooperation with the second spline 42a is assembled together, and avoids the rotation of the 2nd DU axle sleeve 52.
It is fixed with left fixing bolt 71 after left crank 31 is inserted in the left six faces rule 21 of central spindle of central spindle 2, after fixed, left fixation
Bolt 71 is fully sunk in left crank 31；It is solid with right fixing bolt 72 after right crank 32 is inserted in the right six faces rule 24 of central spindle of central spindle 2
Fixed, after fixed, right fixing bolt 72 is fully sunk in right crank 32.
In this Middle shaft assembly, nylon orthodontic bowl 41, nylon reverse tooth bowl 42, the first DU axle sleeve 51, the 2nd DU axle sleeve 52 and
PU gasket 6 is all made of nonmetallic materials and is made, and not only significantly reduces weight, and can reduce manufacturing cost.
The most preferred embodiment of the utility model has illustrated, the various change or remodeling made by those of ordinary skill in the art
All without departing from the scope of the utility model.
Claims (5)
1. a kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle includes and frame five-through pipe (1) Xiang Shi
The central spindle (2) that can be freely rotated matched, the left end of the central spindle (2) are fixed with left crank (31), and right end is fixed with the right side
Crank (32), it is characterized in that: being provided with nylon orthodontic bowl in left crank end between the central spindle (2) and frame five-through pipe (1)
(41), right crank end is provided with nylon reverse tooth bowl (42), the Buddhist nun between the central spindle (2) and frame five-through pipe (1)
Be provided with the first DU axle sleeve (51) between imperial orthodontic bowl (41) and central spindle (2), the nylon reverse tooth bowl (42) and central spindle (2) it
Between be provided with the 2nd DU axle sleeve (52), be provided with PU gasket between the nylon orthodontic bowl (41) and the first DU axle sleeve (51)
(6)；The left six faces rule (21) of central spindle, the left curved surface of central spindle (22), the right curved surface of central spindle (23) and axis are provided in the central spindle (2)
The core right side six faces rule (24), the left crank (31) are matched with the left six faces rule (21) of central spindle, the right crank (32) and axis
The core right side six faces rule (24) match, and the inner end of the first DU axle sleeve (51) offsets with the left curved surface of central spindle (22) matches, described
The inner end of 2nd DU axle sleeve (52) offsets with the right curved surface of central spindle (23) matches.
2. a kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle according to claim 1, feature
It is: is provided with first axle set spline (51a) outside the first DU axle sleeve (51), is provided in the nylon orthodontic bowl (41)
Compatible first spline (41a) with the first axle sleeve spline (51a)；The is provided with outside the 2nd DU axle sleeve (52)
Two axle sleeve splines (52a) are provided in the nylon reverse tooth bowl (42) compatible the with the second axle sleeve spline (52a)
Two splines (42a).
3. a kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle according to claim 2, feature
It is: is provided with compatible first intrados (51b) with the left curved surface of central spindle (22) in the first DU axle sleeve (51)；Described
Compatible second intrados (52b) with the right curved surface of the central spindle (23) is provided in 2nd DU axle sleeve (52).
4. a kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle according to claim 3, feature
Be: the periphery of the nylon orthodontic bowl (41) is formed with the first external screw thread (41b) with frame five-through pipe (1) bolt；
The periphery of the nylon reverse tooth bowl (42) is formed with the second external screw thread (42b) with frame five-through pipe (1) bolt.
5. a kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle according to claim 4, feature
Be: the left crank (31) is mutually fixed by left fixing bolt (71) and the left end of central spindle (2), a left side for the central spindle (2)
End is formed with left inside screw thread (2a)；The right crank (32) is mutually fixed by right fixing bolt (72) and the right end of central spindle (2), institute
The right end for the central spindle (2) stated is formed with right internal screw thread (2b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920244141.6U CN209535364U (en) | 2019-02-27 | 2019-02-27 | A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920244141.6U CN209535364U (en) | 2019-02-27 | 2019-02-27 | A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209535364U true CN209535364U (en) | 2019-10-25 |
Family
ID=68274158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920244141.6U Active CN209535364U (en) | 2019-02-27 | 2019-02-27 | A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209535364U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202873A (en) * | 2021-05-06 | 2021-08-03 | 天津新日机电有限公司 | Middle axle bowl group structure for electric bicycle |
-
2019
- 2019-02-27 CN CN201920244141.6U patent/CN209535364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202873A (en) * | 2021-05-06 | 2021-08-03 | 天津新日机电有限公司 | Middle axle bowl group structure for electric bicycle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209535364U (en) | A kind of ultralight composite Fast Installation Middle shaft assembly of child's bicycle | |
| CN103283125B (en) | It is mechanically connected the first housing and the attachment structure of the second housing | |
| CN107887989A (en) | Outer rotor motor and stator assembly thereof | |
| JP2010523386A (en) | Propulsion mechanism with two independent actuators | |
| CN207791000U (en) | A kind of no wheel hub electric vehicle | |
| CN101989801A (en) | Shoulderless and brushless hub motor for electric bicycle | |
| CN106151425A (en) | A kind of flexible needle bearing harmonic motor gear-box | |
| CN109931382A (en) | The gear reduction box drive mechanism of equidirectional parallel double-screw extruder | |
| CN211246982U (en) | Hierarchical formula rotating shaft subassembly for centrifuge | |
| CN202900399U (en) | Water pump installation structure of stepless speed change water cooled engine | |
| CN209257769U (en) | Has one-way driving mechanism configuration in the wheel hub structure of reverse position | |
| CN101704397B (en) | Integrated central shaft assembly for bicycle | |
| CN208719273U (en) | Speed changer and vehicle | |
| CN203666259U (en) | Hub unit mandrel | |
| CN202518772U (en) | Quick-mounted supporting device for brush roller of belt conveyor | |
| CN202653454U (en) | Novel mechanism of lipstick tube | |
| CN206555125U (en) | A kind of plate wheel formula positive displacement pump | |
| CN206023470U (en) | A kind of attachment means of servomotor | |
| CN202011306U (en) | Bicycle hub structure | |
| CN110360276A (en) | A kind of planetary reducer reducing output shaft axial float | |
| CN215928159U (en) | Inner gear ring key transmission structure of drum-shaped tooth type coupling | |
| CN219774769U (en) | Planet carrier convenient for installing planetary gear | |
| CN201592757U (en) | Integrated middle shaft component of bicycle | |
| CN205908710U (en) | Air compressor machine drive gear structure | |
| CN209054049U (en) | A kind of transmission gear and unmanned plane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |