CN205971708U - Bicycle crank of improvement joins structure - Google Patents
Bicycle crank of improvement joins structure Download PDFInfo
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- CN205971708U CN205971708U CN201620874701.2U CN201620874701U CN205971708U CN 205971708 U CN205971708 U CN 205971708U CN 201620874701 U CN201620874701 U CN 201620874701U CN 205971708 U CN205971708 U CN 205971708U
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Abstract
The utility model discloses a bicycle crank of improvement joins structure, it includes: a crank, its one end are equipped with and one of have a perfect understanding a first hole and a second hole, are equipped with a stop part between first hole and second hole, and a mandrel is equipped with a first end and the second of connecing and connects the end, and this first end links that connects is equipped with a flange, a conjunction has a sleeve, and this sleeve is equipped with a shaft hole, and this sleeve tip is equipped with plural claw to organize the montage with a fluted disc, sleeve end in addition is equipped with a portion of cup jointing, should the portion of cup jointing be equipped with a trepanning, is equipped with one between this trepanning and shaft hole and supports only reason, by above -mentioned member, make this mandrel wear to establish the conjunction shaft hole, portion of should cup jointing and the mutual gomphosis in second hole wear to establish first the connecing of first kong bingyu with a nut and hold mutual montage, and its concentricity is good, and reducible radial beat volume makes this fluted disc group more accurate when driving the chain variable speed, and overall structure can stabilize and combine just reduce cost, really possesses splendid innovation and convenient practicality person.
Description
Technical field
This utility model is related to technical field of bicycles, particularly to a kind of bicycle crank connecting structure of improvement.
Background technology
Bicycle is predominantly provided with crank structure between wheel group and fluted disc group, drives crank gearing fluted disc and chain by trampling
Bar, driven wheel group rotates, to drive bicycle traveling person this chain again.
This crank structure is to be connect between this claw and crank according to mode of connection using claw and fluted disc group, is broadly divided into one
Formula and two-piece type two big class.
Bicycle drive assembly as disclosed by CN101208099 new patent, includes located at a bicycle
Heart axle, one first crank and one second crank are assembled in this heart axle two ends, and this first crank is with this heart axle as axle center and along one
First direction of rotation rotates and drives this bicycle to advance, and this first crank is to screw togather assembling along one second direction of rotation rotation
In this heart axle, and this second direction of rotation is same as this first direction of rotation.
The crank of a kind of applicable multiple aperture as disclosed by CN090200689 new patent, it includes：One is bent
One end of handle is to be provided with a groove；The central authorities of First Five-Year Plan pawl are provided with a perforation；The central authorities of one conjunction are provided with a perforation, this conjunction
Insert in the groove of crank for just may pass through the perforation of five pawls, the fixation so that crank, five pawls and conjunction can be combined with each other, and
Its component person can be bought or get by illegal means according to use demand.
Content of the invention
In order to overcome drawbacks described above, this utility model provide a kind of extend be provided with socket part be available for heart axle wear and with song
The conjunction structure that sleeve sets, its concentricity is good to reduce beat, and has effect person of firm combination and reduces cost.
This utility model be employed technical scheme comprise that to solve its technical problem：A kind of bicycle crank of improvement is even
Junction structure, it includes：One first crank, its one end is axially arranged with one first hole and one second hole of insertion, this first hole with
It is provided with a stop part between the second hole；Wholeheartedly axle, is respectively arranged at two ends with one first and connects end and one second connect end, this first end connecing end
Portion is radially provided with a flange；One conjunction, has a sleeve, and this sleeve is provided with an axis hole, is convexly equipped with around this sleeve ends
Plural claw, to connect with a fluted disc group group, the extension of this sleeve another end is provided with a socket part, and this socket part is provided with and axis hole insertion
A set of hole, and this set hole is formed with one to only edge with axis hole joining place, makes this heart axle wear conjunction axis hole, is then socketed this
Portion is mutually chimeric with first crank the second hole, a nut is worn the first hole and connects end with heart axle first and be mutually assembled, and should
Heart axle second is connect end and is mutually assembled with one second crank.
As further improvement of the utility model, wherein this second hole axle of this first crank is to being equipped with plural recess
Or radial direction ring convex are provided with this stop part between protuberance, and this first hole and second hole.
As further improvement of the utility model, wherein the first of this heart axle connects end inner circumferential and is provided with an internal thread segment, should
Nut is provided with an external thread section, so that this external thread section is mutually spirally connected with heart axle internal thread segment.
As further improvement of the utility model, the end radial direction that wherein this heart axle first connects end is equipped with this flange,
In this first connect end periphery be provided with a junction surface, this junction surface be in first connect end peripheral, axial be equipped with plural tooth bar, and in
It is equipped with a groove between this flange and junction surface, this flange is equipped with oblique plural tooth towards groove direction, make this heart axle wear
Conjunction axis hole, makes this first connect end junction surface and axis hole tight fit, should support only edge mutually fastening with tooth.
As further improvement of the utility model, wherein this second hole axle of this first crank is to being equipped with plural recess
Or radial direction ring convex are provided with this stop part between protuberance, and this first hole and second hole, between this stop part and the second hole and radial direction ring convex
It is provided with a block edge, this block edge internal diameter is more than the internal diameter of stop part, and the internal diameter of this block edge is less than the internal diameter in the second hole, this conjunction
Corresponding second hole in this socket part periphery and be equipped with plural protuberance or recess, this sleeve another end extends this set being provided with sleeve-shaped
Socket part, this socket part away from one end of sleeve and extends and is provided with the less collar of external diameter, and this collar is provided with socket part inner circumferential
This set hole of predetermined depth, and the aperture in this set hole is more than the aperture of axis hole, this set hole and axis hole joining place are formed with this and only support
Edge, makes this heart axle wear conjunction axis hole, then mutually wears this socket part with first crank the second hole, make this junction surface with
Second hole is mutually chimeric, and this collar is mutually chimeric with block edge, and this collar end mutually supporting only with stop part.
The beneficial effects of the utility model are：This bicycle crank connecting structure improvement of the present utility model, is to connect in this
One end extension of component is provided with socket part, and the claw of this fastener, for connecing with fluted disc group group, makes this heart axle wear conjunction, this heart
The first of axle is connect end and is mutually rabbeted with socket part, and will be mutually sheathed with socket part for this first crank, recycles this nut to wear
If the first crank simultaneously connects end with heart axle first and is spirally connected, both concentricitys are good, and it can consolidate combination, make the link start of each inter-module
It is not likely to produce and gets loose, and be conveniently replaced the crank of different length, need not in addition open up different moulds, you can reduce and be manufactured into
This, then reach splendid innovation practicality and cost benefit person；This first crank second hole axle to being equipped with plural recess or protuberance, and
Corresponding second hole in this socket part periphery and be equipped with plural protuberance or recess, mutual inlay card combination between mat jog, make this second
Can be precisely chimeric between hole and socket part, you can reduce radial direction beat amount so that this fluted disc group drive chain speed change when more
Precisely；This connecting piece socket part away from one end of sleeve and extends and is provided with collar, and this first crank second hole is mutual with socket part
When sheathed, this collar is mutually chimeric with block edge, and this collar end mutually supporting only so as to assembling axial dimension can with stop part
It is controlled, accurately can reach design requirement, need not expend the excessive time measures size, therefore smooth up to volume production and big
Effect person that amount produces；The claw of this conjunction can be processed into different external forms by a blank, so that cost is reduced, and it is various to reach external form
Change effect person of design.
Brief description
Fig. 1 is the three-dimensional combination figure of this utility model one preferred embodiment；
Fig. 2 is the three-dimensional exploded view of this utility model one preferred embodiment；
Fig. 3 is the three-dimensional exploded view at another visual angle of this utility model one preferred embodiment；
Fig. 4 is the assembled sectional view of this utility model one preferred embodiment；
In figure indicates：10- first crank；11- first hole；12- the second hole 13- recess；14- stop part；20- second is bent
Handle；30- heart axle；31- first connects end；32- internal thread segment；33- flange；34- junction surface；35- tooth bar；36- groove；37- tooth；
38- second connects end；40- conjunction；41- sleeve；42- axis hole；43- claw；44- socket part；45- protuberance；46- collar；47- covers
Hole；48- supports only edge；50- fluted disc group.
Specific embodiment
In order to deepen, to understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, this utility model to be made further
Describe in detail, this embodiment is only used for explaining this utility model, does not constitute the restriction to this utility model protection domain.
Refer to Fig. 1-4 first, a kind of bicycle crank connecting structure improvement provided by the utility model, it mainly wraps
Contain：One first crank 10, one second crank 20, wholeheartedly axle 30, a conjunction 40 and a fluted disc group 50.
This crank group has one first crank 10 and one second crank 20, and this first crank 10 one end is axially arranged with insertion
One first hole 11 and one second hole 12, this second hole 12 is axially equipped with plural recess 13 or protuberance, and this first hole 11 and the
Between two holes 12, radial direction ring convex are provided with a stop part 14, and between this stop part 14 and the second hole 12, simultaneously radial direction ring convex are provided with a block edge 141,
The internal diameter of this block edge 141 is more than the internal diameter of stop part 14, and the internal diameter of this block edge 141 is less than the internal diameter in the second hole 12.
This heart axle 30, is respectively arranged at two ends with one first and connects end and 31 and one second connect end 38, and this first connects end 31 inner circumferentials and be provided with
One internal thread segment 32, this first connect end 31 end be radially outward equipped with a flange 33, in this first connect end 31 peripheries be provided with
One junction surface 34, this junction surface 34 be in first connect end 31 peripheral, axial be equipped with plural tooth bar 35, and in this flange 33 with connect
It is equipped with a groove 36, this flange 33 is equipped with oblique plural tooth 37 towards groove 36 direction between conjunction portion 34.
This conjunction 40, has a sleeve 41, and this sleeve is provided with an axis hole 42, and this sleeve 41 end perimeter is convexly equipped with again
Number claw 43, so that 50 groups connect with this fluted disc group, this sleeve 41 another end extends the socket part 44 being provided with sleeve-shaped, this socket part
Corresponding second hole 12 in 44 peripheries and be equipped with plural protuberance 45 or recess, this socket part 44 sets away from one end extending of sleeve 41
There is the less collar 46 of external diameter, this collar 46 and socket part 44 inner circumferential are provided with a set of hole 47 of predetermined depth, this set hole 47
Aperture is more than the aperture of axis hole 42, then this set hole 47 and axis hole 42 joining place are formed with one and support only edge 48；This heart axle 30 is made to wear
Conjunction 40 axis hole 42, makes this first connect end 31 junction surfaces 34 and axis hole 42 tight fit, should support only edge 48 mutually blocking with tooth 37
Support, then this socket part 44 is mutually worn with the first crank 10 second hole 12, make this junction surface 34 mutually embedding with the second hole 12
Close, this collar 46 is mutually chimeric with block edge 141, and this collar 46 end mutually being supported with stop part 14 is stopped, then by a nut 15
Wear the first hole 11, this nut 15 is provided with an external thread section 151, make this external thread section 151 mutual with heart axle 30 internal thread segment 32
It is spirally connected, and this heart axle 30 second is connect end 38 and be connected with group with the second crank 20, you can crank group is combined with fluted disc group 50.
By above-mentioned component, the claw 42 of this fastener 40 connects for 50 groups with fluted disc group, and one end of this fastener 40 extends
It is provided with socket part 44, makes this heart axle 30 wear conjunction 40, the first of this heart axle 30 connects end 31 is mutually rabbeted with socket part 44, and
Will be mutually sheathed with socket part 44 for this first crank 10, recycle this nut 15 to wear the first crank 10 and connect with heart axle 30 first
End 31 is spirally connected, and its concentricity is good, can reduce radial beat amount, makes this fluted disc group 50 more accurate when driving chain speed change, whole
Body structure can consolidate and combine and reduces cost, therefore the great innovation of overall structure and practical convenience person.
It is for further appreciating that this utility model structural features, application technology means and desired effect reached, hereby will
This utility model occupation mode is described below：Of the present utility model group sets, and is that this heart axle 30 is worn conjunction 40 axis hole
42, make this first connect end 31 junction surfaces 34 and axis hole 42 tight fit, only edge 48 mutually fastening with tooth 37, then by this set should be supported
Socket part 44 is mutually worn with the first crank 10 second hole 12, makes this junction surface 34 mutually chimeric with the second hole 12, this collar 46 with
Block edge 141 is mutually chimeric, and this collar 46 end mutually supporting only with stop part 14, then a nut 15 is worn the first hole 11,
So that this nut 15 external thread section 151 and heart axle 30 internal thread segment 32 is mutually spirally connected, and this heart axle 30 second is connect end 38 and second
Crank 20 is connected with group, and that is, group sets and completes.
This bicycle crank connecting structure improvement of the present utility model, one end extension of this fastener 40 is provided with socket part
44, the claw 42 of this fastener 40 connects for 50 groups with fluted disc group, makes this heart axle 30 wear conjunction 40, the first of this heart axle 30 connects
End 31 is simultaneously mutually rabbeted with socket part 44, and will be mutually sheathed with socket part 44 for this first crank 10, recycles this nut 15 to wear
If the first crank 10 simultaneously connects end with heart axle 30 first and 31 is spirally connected, both concentricitys are good, and overall structure can consolidate combination, make each assembly
Between link start be not likely to produce and get loose, and be conveniently replaced the crank of different length, need not in addition open up different moulds, that is,
Manufacturing cost can be reduced, then reach splendid innovation practicality and cost benefit person；This first crank 10 second hole 12 is axially equipped with
Plural recess 13 or protuberance, and corresponding second hole 12 in this socket part 44 periphery and be equipped with plural protuberance 45 or recess, mat is concavo-convex
Between portion, mutual inlay card combines, and making can be precisely chimeric between this second hole 12 and socket part 44, and its concentricity is good, you can reduce radial direction
Beat amount is so that this fluted disc group 50 is more accurate when driving chain speed change.
This connecting piece 40 socket part 44 away from one end of sleeve 41 and extends and is provided with collar 46, this first crank 10 second hole
12 mutually sheathed with socket part 44 when, this collar 46 is mutually chimeric with block edge 141, and this collar 46 end and with stop part 14 phase
Only mutually support so as to assembling axial dimension can be controlled, so that accurately design requirement can be reached, excessive time amount need not be expended
Survey size, therefore effect person of smooth up to volume production and a large amount of production；The claw 42 of this conjunction 40 can a blank be processed into not
Same external form, makes cost reduce, and reaches effect person of external form design.
Summary, the bicycle crank connecting structure improvement disclosed by this utility model, for providing a tool extension to be provided with
Conjunction 40 structure of socket part 44, one end extension of this fastener 40 is provided with socket part 44, and the claw 42 of this fastener 40 supplies
50 groups connect with fluted disc group, make this heart axle 30 wear conjunction 40, and the first of this heart axle 30 connects end 31 and mutually embedding with socket part 44
Connect, and will be mutually sheathed with socket part 44 for this first crank 10, recycle this nut 15 wear the first crank 10 and with heart axle 30
First connects end 31 is spirally connected, and its concentricity is good, can reduce radial beat amount, makes this fluted disc group 50 more smart when driving chain speed change
Standard, overall structure can consolidate and combine and reduces cost.
Claims (5)
1. a kind of improvement bicycle crank connecting structure it is characterised in that：It includes：One first crank, its one end is axially
It is provided with one first hole and one second hole of insertion, between this first hole and second hole, be provided with a stop part；Wholeheartedly axle, two ends are respectively
It is provided with one first to connect end and one second connect end, this first end connecing end is radially provided with a flange；One conjunction, has a set of
Cylinder, this sleeve is provided with an axis hole, is convexly equipped with plural claw around this sleeve ends, and to connect with a fluted disc group group, this sleeve is another
End extension is provided with a socket part, and this socket part is provided with a set of hole with axis hole insertion, and this set hole is formed with axis hole joining place
One supports only edge, makes this heart axle wear conjunction axis hole, then will be mutually chimeric with first crank the second hole for this socket part, by a spiral shell
Cap wears the first hole and connects end with heart axle first and be mutually assembled, and this heart axle second is connect end is mutually assembled with one second crank.
2. improvement according to claim 1 bicycle crank connecting structure it is characterised in that：Wherein this first crank
This second hole axle is to being equipped with plural recess or protuberance, and between this first hole and second hole, radial direction ring convex are provided with this stop part.
3. improvement according to claim 1 bicycle crank connecting structure it is characterised in that：Wherein this heart axle first
Connect end inner circumferential and be provided with an internal thread segment, this nut is provided with an external thread section, makes this external thread section and the mutual spiral shell of heart axle internal thread segment
Connect.
4. improvement according to claim 1 bicycle crank connecting structure it is characterised in that：Wherein this heart axle first connects
The end radial direction at end is equipped with this flange, first connects end periphery and is provided with a junction surface in this, and this junction surface is that to connect end in first outer
Week is axially equipped with plural tooth bar, and is equipped with a groove between this flange and junction surface, and this flange is equipped with towards groove direction
Oblique plural tooth, makes this heart axle wear conjunction axis hole, makes this first connect end junction surface and axis hole tight fit, only should support that edge is simultaneously
Mutually fasten with tooth.
5. improvement according to claim 4 bicycle crank connecting structure it is characterised in that：Wherein this first crank
This second hole axle is to being equipped with plural recess or protuberance, and between this first hole and second hole, radial direction ring convex are provided with this stop part, should
Between stop part and the second hole and radial direction ring convex are provided with a block edge, this block edge internal diameter is more than the internal diameter of stop part, and this block edge is interior
Footpath is less than the internal diameter in the second hole, and this socket part periphery of this conjunction corresponds to the second hole and is equipped with plural protuberance or recess, should
Sleeve another end extends and is provided with this socket part of sleeve-shaped, and this socket part away from one end of sleeve and extends and is provided with external diameter less
Collar, this collar and socket part inner circumferential are provided with this set hole of predetermined depth, and the aperture in this set hole is more than the aperture of axis hole, this set
Hole and axis hole joining place are formed with this and support only edge, make this heart axle wear conjunction axis hole, then by this socket part and the first crank
Second hole mutually wears, and makes this junction surface mutually chimeric with the second hole, and this collar is mutually chimeric with block edge, and this collar end is simultaneously
Only mutually support with stop part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874701.2U CN205971708U (en) | 2016-08-12 | 2016-08-12 | Bicycle crank of improvement joins structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874701.2U CN205971708U (en) | 2016-08-12 | 2016-08-12 | Bicycle crank of improvement joins structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205971708U true CN205971708U (en) | 2017-02-22 |
Family
ID=59978247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620874701.2U Active CN205971708U (en) | 2016-08-12 | 2016-08-12 | Bicycle crank of improvement joins structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205971708U (en) |
-
2016
- 2016-08-12 CN CN201620874701.2U patent/CN205971708U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215300 No.118, Pengxi South Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee after: Dingmg New Material Technology Co.,Ltd. Address before: 215300 No.118, Pengxi South Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: D.MAG (KUNSHAN) NEW MATERIAL TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |