CN207261566U - A kind of bicycle freewheel - Google Patents
A kind of bicycle freewheel Download PDFInfo
- Publication number
- CN207261566U CN207261566U CN201720993539.0U CN201720993539U CN207261566U CN 207261566 U CN207261566 U CN 207261566U CN 201720993539 U CN201720993539 U CN 201720993539U CN 207261566 U CN207261566 U CN 207261566U
- Authority
- CN
- China
- Prior art keywords
- flywheel
- wheel body
- inner core
- circle
- exit orifice
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of bicycle freewheel, including core and flywheel inner core outside flywheel, and the outer core of the flywheel uses integral structure, overall to be made of resin material, including wheel body, external reinforcing circle and gear part；The wheel body circle centre position is provided with flywheel inner core mounting hole；The external reinforcing circle is loop configuration, it is arranged at around wheel body, its thickness is more than wheel body；The gear part is arranged on the outer wall of external reinforcing circle, and gear part upper surface is provided with the gear teeth with chain interoperation；It is provided with cushion outside the wheel body, the cushion includes the equally distributed exit orifice of multiple circumferential directions, and the exit orifice is arcuate structure, and the arcuate structure is towards outside；Wheel body is provided with ring stiffener around flywheel inner core mounting hole；Radially distributed bar hole and bar shaped reinforcing rib are arranged alternately between ring stiffener and exit orifice；The bar hole and bar shaped reinforcing rib are fillet design；The bar shaped reinforcing rib is located along the same line with exit orifice and mounting hole.
Description
Technical field
It the utility model is related to the technical field of bicycle, and in particular to a kind of bicycle freewheel.
Background technology
Bicycle freewheel is a kind of important bicycle accessories, and rear wheel is driven by the cooperation of flywheel and chain, will
Manpower is converted into the power of bicycle.Bicycle freewheel of the prior art is varied, most of to be made of metal, structure letter
Single, cost is relatively low.But during actual use, there is weight is big, the shortcomings such as without elasticity and easily get rusty.Cause
This, research and development it is a kind of it is light-weight, intensity is high and possesses the bicycle freewheel of preferable cushion performance, for reduce bicycle weight,
Raising is ridden efficiency, is had great importance.
Utility model content
To achieve these goals, the utility model provides a kind of bicycle freewheel, have it is light-weight, easy to use and
The advantages of security is good.
The bicycle freewheel is realized by the following technical solutions：
A kind of bicycle freewheel, including core and flywheel inner core outside flywheel；The flywheel inner core is movably set in shell flywheel
In；The outer core of the flywheel uses integral structure, overall to be made of resin material, including wheel body, external reinforcing circle and gear part；
The wheel body circle centre position is provided with flywheel inner core mounting hole；The external reinforcing circle is loop configuration, it is arranged at the week of wheel body
Enclose, its thickness is more than wheel body；The gear part is arranged on the outer wall of external reinforcing circle, and gear part upper surface is provided with and chain
The gear teeth of cooperation；Cushion is provided with outside the wheel body, the cushion includes the equally distributed exit orifice of multiple circumferential directions, described outer
Hole is arcuate structure, and the arcuate structure is towards outside；Wheel body is provided with ring stiffener around flywheel inner core mounting hole；
Radially distributed bar hole and bar shaped reinforcing rib are arranged alternately between ring stiffener and exit orifice；The bar hole and bar
Shape reinforcing rib is fillet design；The bar shaped reinforcing rib is located along the same line with exit orifice and mounting hole.
Preferably, the interior teeth of the flywheel inner core are connected with the outer core of flywheel using traditional structure of the prior art.
Preferably, the chain baffle ring positioned at gear part both sides is provided with the excircle of the external reinforcing circle.
Relative to core outside metal flywheel common in the art, the outer core of flywheel provided in the utility model is by resin material system
Into, convenient processing and manufacture and cost is low, can be prepared by injection；It is reduced outside flywheel by the cooperation of exit orifice and endoporus
Core weight, while the outer core of flywheel is possessed good intensity and rigidity, while also there is preferable elasticity, long-time service is not easy to produce
Raw crack or damage；By setting external reinforcing circle, the intensity of the outer core of flywheel is improved, while can be by the stress of gear part
Uniformly it is distributed on wheel body, improves service life, reduces stress concentration；By further setting ring stiffener, ensure
Intensity near mounting hole, effectively can concentrate on inside by the stress cracking formed during use, prevent crack growth
To whole wheel body, service life is improved, also increases the stress ability to bear of the outer core of flywheel；It with flywheel inner core by matching somebody with somebody
Close, while bicycle weight is effectively reduced, effectively power is transmitted, improves the efficiency of riding of bicycle.
Brief description of the drawings
Fig. 1 is the structure chart of bicycle freewheel in the utility model；
Embodiment
The technical solution of the utility model is described in detail below by specific embodiment, but this practicality is new
The scope of type is not restricted by the embodiments.
As shown in Figure 1, a kind of bicycle freewheel is present embodiments provided, including core and flywheel inner core outside flywheel；It is described to fly
Wheel inner core is movably set in shell flywheel；The outer core of the flywheel uses integral structure, overall to be made of resin material, including
Wheel body 1, external reinforcing circle 2 and gear part；1 circle centre position of wheel body is provided with flywheel inner core mounting hole 11；The external reinforcing
Circle 2 is loop configuration, it is arranged at around wheel body 1, its thickness is more than wheel body 1；The gear part is arranged at external reinforcing circle 2
Outer wall on, gear part upper surface is provided with and the gear teeth of chain interoperation 3；Cushion is provided with outside the wheel body 1, it is described slow
Rush layer and include the equally distributed exit orifice 4 of multiple circumferential directions, the exit orifice 4 is arcuate structure, and the arcuate structure is towards outside；Wheel body 1
Ring stiffener 12 is provided with around flywheel inner core mounting hole 11；It is arranged alternately between ring stiffener 12 and exit orifice 4
There are radially distributed bar hole 5 and bar shaped reinforcing rib 6；The bar hole 5 and bar shaped reinforcing rib 6 are fillet design；It is described
Bar shaped reinforcing rib 6 is located along the same line with exit orifice 4 and mounting hole 11；The outer core of the interior teeth and flywheel of the flywheel inner core uses
Traditional structure connection of the prior art；The chain positioned at gear part both sides is provided with the excircle of the external reinforcing circle 2
Baffle ring.
Embodiment above is only the preferred embodiment of the utility model, it should be pointed out that, for ordinary skill
For people, what is carried out on the premise of the utility model is not departed from is partially improved, still in the scope of protection of the utility model it
In.
Claims (3)
1. a kind of bicycle freewheel, including core and flywheel inner core outside flywheel；The flywheel inner core is movably set in shell flywheel,
It is characterized in that：The outer core of the flywheel uses integral structure, overall to be made of resin material, including wheel body, external reinforcing circle
And gear part；The wheel body circle centre position is provided with flywheel inner core mounting hole；The external reinforcing circle is loop configuration, it is arranged at
Around wheel body, its thickness is more than wheel body；The gear part is arranged on the outer wall of external reinforcing circle, and gear part upper surface is set
There are the gear teeth with chain interoperation；Cushion is provided with outside the wheel body, it is equally distributed outer that the cushion includes multiple circumferential directions
Hole, the exit orifice are arcuate structure, and the arcuate structure is towards outside；Wheel body is provided with ring around flywheel inner core mounting hole
Shape reinforcing rib；Radially distributed bar hole and bar shaped reinforcing rib are arranged alternately between ring stiffener and exit orifice；It is described
Bar hole and bar shaped reinforcing rib are fillet design；The bar shaped reinforcing rib is located along the same line with exit orifice and mounting hole.
2. bicycle freewheel according to claim 1, it is characterised in that：The outer core of the interior teeth and flywheel of the flywheel inner core
It is flexibly connected using common structure of the prior art.
3. bicycle freewheel according to claim 2, it is characterised in that：It is provided with the excircle of the external reinforcing circle
Chain baffle ring positioned at gear part both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720993539.0U CN207261566U (en) | 2017-08-10 | 2017-08-10 | A kind of bicycle freewheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720993539.0U CN207261566U (en) | 2017-08-10 | 2017-08-10 | A kind of bicycle freewheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207261566U true CN207261566U (en) | 2018-04-20 |
Family
ID=61924897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720993539.0U Expired - Fee Related CN207261566U (en) | 2017-08-10 | 2017-08-10 | A kind of bicycle freewheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207261566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269762A (en) * | 2017-08-10 | 2017-10-20 | 天津市奥美工贸有限公司 | A kind of bicycle freewheel |
-
2017
- 2017-08-10 CN CN201720993539.0U patent/CN207261566U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269762A (en) * | 2017-08-10 | 2017-10-20 | 天津市奥美工贸有限公司 | A kind of bicycle freewheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180420 Termination date: 20200810 |