CN207496875U - A kind of chain cover crank structure of bicycle sprocket wheel - Google Patents
A kind of chain cover crank structure of bicycle sprocket wheel Download PDFInfo
- Publication number
- CN207496875U CN207496875U CN201721500943.6U CN201721500943U CN207496875U CN 207496875 U CN207496875 U CN 207496875U CN 201721500943 U CN201721500943 U CN 201721500943U CN 207496875 U CN207496875 U CN 207496875U
- Authority
- CN
- China
- Prior art keywords
- chain cover
- sprocket wheel
- bicycle
- retainer ring
- 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.)
- Expired - Fee Related
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Abstract
The utility model is related to a kind of chain cover crank structures of bicycle sprocket wheel, and for being mounted on a bicycle, including a crank, one end is used to connect the axle center of the sprocket wheel of the bicycle, and the other end is used to connect the pedal of the bicycle；Wherein the crank includes an ontology and connects a protruding portion of the ontology one end, which is used to connect the axle center of the sprocket wheel of the bicycle；One retainer ring, the tight beam protruding portion；One chain cover, in the mounted state between the crank and the sprocket wheel；The center of the wherein chain cover forms a mounting hole, and wherein protruding portion of the crank runs through the mounting hole of the chain cover；The chain cover is located between the retainer ring and the ontology, and is gripped by the retainer ring, therefore will not fall off.
Description
Technical field
The utility model is related to a kind of chain covers and crank structure for bicycle sprocket wheel, and in particular to a kind of bicycle chain
The chain cover crank structure of wheel.
Background technology
The chain cover crank structure of the bicycle sprocket wheel of the prior art mainly includes a crank, and one end is foot-operated for connecting this
The axle center of the sprocket wheel of vehicle, the other end are used to connect the pedal of the bicycle.Wherein the axle center connect a sprocket wheel be located at the sprocket wheel and
Between the crank.Wherein one end of the crank, which forms a protruding portion, has annular sidewall, which is used to connect the bicycle
Sprocket wheel axle center, wherein when the bicycle be electric vehicle (i.e. EBIKE) when, the axle center of the sprocket wheel is the driving of the electric vehicle
The axle center of electro-motor.One chain cover is installed between the crank and the sprocket wheel.The center of the wherein chain cover forms a mounting hole,
In the protruding portion run through the mounting hole.Wherein the chain cover is fixed on using multiple screws on the sprocket wheel.
But in the chain cover crank structure of the bicycle sprocket wheel of the above-mentioned prior art, since the chain cover is consolidated using multiple screws
Due on the sprocket wheel, it is therefore desirable to many time be spent sequentially to lock screw one by one, therefore quite consumed in assembling
When effort.And the mode of application screw locking can also cause integrally-built component count to increase, and increase manufacture cost.
Therefore this case is wished to propose a kind of chain cover crank structure of brand-new bicycle sprocket wheel, to solve in the above-mentioned prior art
The defects of.
Utility model content
The main purpose of the utility model be to provide it is a kind of solve the problems, such as in the above-mentioned prior art, carried in the utility model
Go out a kind of chain cover crank structure of bicycle sprocket wheel, chain cover application retainer ring is fixed on to the axis of the sprocket wheel of crank connection bicycle
One end of the heart, therefore do not need to the chain cover through additional component such as screw to fix on the sprocket, therefore the knot of this case
Structure can reduce whole component count, not only save cost, also quite convenient in assembling, and whole installation is greatly decreased
Time.This can not reach for the prior art.
In order to complete above-mentioned purpose, the utility model provides a kind of chain cover crank structure of bicycle sprocket wheel, for pacifying
On a bicycle, including：One crank, one end are used to connect the axle center of the sprocket wheel of the bicycle, and the other end is used to connect
The pedal of the bicycle；Wherein the crank includes an ontology and connects a protruding portion of the ontology one end, which is used to connect
Connect the axle center of the sprocket wheel of the bicycle；One retainer ring, the tight beam protruding portion；One chain cover, in the mounted state positioned at the crank
And between the sprocket wheel；The center of the wherein chain cover forms a mounting hole, the wherein protruding portion of the crank being somebody's turn to do through the chain cover
Mounting hole；The chain cover is located between the retainer ring and the ontology, and is gripped by the retainer ring, therefore will not fall off.
One preferred embodiment of the utility model is that the protruding portion has an annular sidewall；Wherein the protruding portion should
An annular recess is formed on annular sidewall；
Wherein the retainer ring is embedded in the annular recess, and the outside left of the retainer ring is protruded from outside the annular recess,
The chain cover is clamped between the ontology and the retainer ring by the outside left that wherein retainer ring is protruded from outside the annular recess.
One preferred embodiment of the utility model is that the retainer ring is the C wire loops with a narrow notch, is fixed using this
Ring fetters the chain cover so that the chain cover will not fall off.
One preferred embodiment of the utility model is that the retainer ring is the C retaining rings with a wide notch, is fixed using this
Ring fetters the chain cover so that the chain cover will not fall off.
One preferred embodiment of the utility model is that the both sides that the retainer ring is located at the width notch are respectively formed expansion section
Position, each expand form one second perforation on position.
One preferred embodiment of the utility model is, stage casing to the end of the annular sidewall of the protruding portion forms tapered
Structure；Wherein the annular recess of the protruding portion forms a widened outer portion, the wherein outer shroud close to the side of the ontology
Portion is sticked in the mounting hole of the chain cover.
One preferred embodiment of the utility model is that the central part of the chain cover is recessed inwardly in face of the side of the sprocket wheel
A recessed portion is formed, and the mounting hole is located at the center of the recessed portion；Wherein the chain cover formed at its outer peripheral edge it is multiple
Hollow hole.
One preferred embodiment of the utility model is that the protruding portion center forms a perforation, in the mounted state, the foot
The axle center of the sprocket wheel of treadmill passes through the perforation, and is fixed in the perforation；An internal tooth is wherein formed on the inside of the perforation, for stinging
Close the axle center of the sprocket wheel of the bicycle.
One preferred embodiment of the utility model is that the mode of the retainer ring application gluing is fixed on the annular recess
It is interior.
One preferred embodiment of the utility model is, when the bicycle is electric bicycle (i.e. EBIKE), the sprocket wheel
Axle center for the electric bicycle driving electro-motor axle center.
The beneficial effects of the utility model are as follows：
Chain cover application retainer ring is fixed on to the one end in the axle center of the sprocket wheel of crank connection bicycle, therefore is not needed to this
Chain cover is by additional component such as screw to fix on the sprocket, therefore the structure of this case can reduce whole package count
Amount, not only saves cost, also quite convenient in assembling, and the whole set-up time is greatly decreased.This does not for the prior art
It arrives.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the component combination of the utility model and the decomposition diagram of sprocket wheel.
Fig. 2 is the component combination of the utility model and the combination diagram of sprocket wheel.
Fig. 3 is the component combination diagram of the utility model.
Fig. 4 is the close-up schematic view of the component combination of the utility model.
Fig. 5 is the component decomposition diagram of the utility model.
Fig. 6 is the partial side schematic diagram of the crank of the utility model.
Fig. 7 is the schematic partial cross-sectional view of the component combination of the utility model.
Fig. 8 is the retainer ring schematic diagram of the utility model.
Fig. 9 is another embodiment of the utility model.
Figure 10 is the close-up schematic view of another embodiment of the utility model.
Figure 11 is the component decomposition diagram of another embodiment of the utility model.
Figure 12 is the retainer ring schematic diagram of another embodiment of the utility model.
Specific embodiment
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by.Many details are elaborated in the following description in order to fully understand the utility model, but originally
Utility model can also be implemented using other different from other manner described here, and those skilled in the art can not disobey
Similar popularization is done in the case of back of the body the utility model connotation, therefore the utility model is not limited by following public specific embodiment
System.
As shown in Figures 1 to 12, the chain cover crank structure of the bicycle sprocket wheel of the utility model is shown, for being mounted on one
On bicycle, including following assemblies：
One crank 10, one end are used to connect the axle center 110 (as shown in Figure 1) of the sprocket wheel 120 of the bicycle, and the other end is used
In the pedal (not shown) for connecting the bicycle.
Wherein the crank 10 includes an ontology 11 and connects a protruding portion 20 of 11 one end of ontology, which is used for
Connect the axle center 110 of the sprocket wheel 120 of the bicycle；
One retainer ring 50, the tight beam protruding portion 20.
One chain cover 40, in the mounted state between the crank 10 and the sprocket wheel 120.The wherein central shape of the chain cover 40
Into a mounting hole 42 (as shown in Figure 5), wherein protruding portion 20 of the crank 10 runs through the mounting hole 42 of the chain cover 40.The chain
Lid 40 is located between the retainer ring 50 and the ontology 11, and is gripped by the retainer ring 50, therefore will not fall off (such as Fig. 3 and Fig. 4
It is shown).
As shown in figure 8, wherein the retainer ring 50 is the C wire loops of the approximate annulus with a narrow notch 52, fixed using this
Ring 50 fetters the chain cover 40 so that the chain cover 40 will not fall off.
Wherein the protruding portion 20 has an annular sidewall 25.Wherein a ring is formed on the annular sidewall 25 of the protruding portion 20
Shape groove 30 (as shown in Figure 6).Wherein the retainer ring 50 is embedded in the annular recess 30, and the outside left of the retainer ring 50 is dashed forward
Outside for the annular recess 30, the outside left that wherein retainer ring 50 is protruded from outside the annular recess 30 is clamping by the chain cover 40
Between the ontology 11 and the retainer ring 50 (as shown in Figure 7).
Stage casing to the end of the wherein annular sidewall 25 of the protruding portion 20 forms tapered structure.
One preferred embodiment is, the central part of the chain cover 40 is recessed inwardly in face of the side of the sprocket wheel 120, and to form one recessed
Concave portion 44, and the mounting hole 42 is located at the center of the recessed portion 44.
Can form multiple hollow holes 46 at its outer peripheral edge wherein in the chain cover 40, with mitigate the weight of the chain cover 40 with
And save the material cost of the chain cover 40.
Using above-mentioned structure, which only must be securable to the crank 10 and the sprocket wheel by the retainer ring 50
Between 120, without by the chain cover 40 by additional component such as screw to be fixed on the sprocket wheel 120, therefore this case
Structure is quite convenient in assembling, and the whole set-up time is greatly decreased.
As shown in Figures 1 and 2, wherein when the bicycle is electric bicycle (i.e. EBIKE), the axle center of the sprocket wheel 120
Axle center of 110 systems for the driving electro-motor 100 of the electric bicycle.
Wherein 20 center of protruding portion forms a perforation 22, in the mounted state, the axle center of the sprocket wheel 120 of the bicycle
110 pass through the perforation 22, and are fixed in the perforation 22.
One preferred embodiment is that 22 inside of perforation forms an internal tooth 221, for being engaged the sprocket wheel 120 of the bicycle
Axle center 110.
Wherein the annular recess 30 of the protruding portion 20 forms a widened outer portion 24 close to the side of the ontology 11,
In the outer portion 24 be sticked in the mounting hole 42 of the chain cover 40.
One preferred embodiment is that 50 system of retainer ring is fixed on using the mode of gluing in the annular recess 30.
Fig. 9 to Figure 12 shows another embodiment of this case, component application same as the previously described embodiments in the present embodiment
Identical symbolic indication, and have the function of identical structure and, therefore details are not described herein its details.Hereinafter only explanation with it is upper
It states at the difference of embodiment.
As shown in Figure 10 and Figure 12, wherein the retainer ring 50 is the C retaining rings of the approximate annulus with a wide notch 53, is applied
The retainer ring 50 fetters the chain cover 40 so that the chain cover 40 will not fall off.
Wherein the retainer ring 50 be located at the wide notch 53 both sides be respectively formed expand position 54, respectively on the expansion position 54
Form one second perforation 542.
The advantages of this case be by chain cover application retainer ring be fixed on crank connection bicycle sprocket wheel axle center one end,
Therefore it does not need to the chain cover through additional component such as screw to fix on the sprocket, therefore the structure of this case can be reduced
Whole component count, not only saves cost, also quite convenient in assembling, and the whole set-up time is greatly decreased.This is
What the prior art can not accomplish.
In conclusion the design of consideration of this case hommization, quite meets actual demand.Its specific improvement prior art lacks
It falls into, significantly there is breakthrough progress compared to the prior art, certain enhancement having effects that, and non-be easy to reach.This
Case be not disclosed in domestic and external document in the market, having met the regulation of utility model patent method.
Obviously, described embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained without making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of chain cover crank structure of bicycle sprocket wheel, which is characterized in that including：
One crank, one end are used to connect the axle center of the sprocket wheel of the bicycle, and the other end is used to connect the pedal of the bicycle；
Wherein the crank includes an ontology and connects a protruding portion of the ontology one end, which is used to connect the bicycle
The axle center of the sprocket wheel；
One retainer ring, the tight beam protruding portion；
One chain cover, in the mounted state between the crank and the sprocket wheel；The center of the wherein chain cover forms a mounting hole,
In the crank the protruding portion run through the chain cover the mounting hole；The chain cover is located between the retainer ring and the ontology, and by this
Retainer ring is gripped.
2. the chain cover crank structure of bicycle sprocket wheel according to claim 1, which is characterized in that the protruding portion has a ring
Shape side wall；Wherein an annular recess is formed on the annular sidewall of the protruding portion；
Wherein the retainer ring is embedded in the annular recess, and the outside left of the retainer ring is protruded from outside the annular recess, wherein
The chain cover is clamped between the ontology and the retainer ring by the outside left that the retainer ring is protruded from outside the annular recess.
3. the chain cover crank structure of bicycle sprocket wheel according to claim 1, which is characterized in that the retainer ring is with one
The C wire loops of narrow notch fetter the chain cover so that the chain cover will not fall off using the retainer ring.
4. the chain cover crank structure of bicycle sprocket wheel according to claim 1, which is characterized in that the retainer ring is with one
The C retaining rings of wide notch fetter the chain cover so that the chain cover will not fall off using the retainer ring.
5. the chain cover crank structure of bicycle sprocket wheel according to claim 4, which is characterized in that the retainer ring is located at the width
The both sides of notch, which are respectively formed, expands position, and each expand forms one second perforation on position.
6. the chain cover crank structure of bicycle sprocket wheel according to claim 2, which is characterized in that the ring-type of the protruding portion
The stage casing of side wall to end forms tapered structure；Wherein the annular recess of the protruding portion forms one close to the side of the ontology
Widened outer portion, the wherein outer portion are sticked in the mounting hole of the chain cover.
7. the chain cover crank structure of bicycle sprocket wheel according to claim 1, which is characterized in that the central part of the chain cover
It is recessed inwardly to form a recessed portion in face of the side of the sprocket wheel, and the mounting hole is located at the center of the recessed portion；The wherein chain cover
It is upper to form multiple hollow holes at its outer peripheral edge.
8. the chain cover crank structure of bicycle sprocket wheel according to claim 1, which is characterized in that the protruding portion center is formed
One perforation, in the mounted state, the axle center of the sprocket wheel of the bicycle pass through the perforation, and are fixed in the perforation；Wherein should
Perforation inside forms an internal tooth, for being engaged the axle center of the sprocket wheel of the bicycle.
9. the chain cover crank structure of bicycle sprocket wheel according to claim 2, which is characterized in that the retainer ring application gluing
Mode be fixed in the annular recess.
10. the chain cover crank structure of bicycle sprocket wheel according to claim 1, which is characterized in that when the bicycle is electricity
During dynamic bicycle, the axle center of the sprocket wheel is the axle center of the driving electro-motor of the electric bicycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721500943.6U CN207496875U (en) | 2017-11-10 | 2017-11-10 | A kind of chain cover crank structure of bicycle sprocket wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721500943.6U CN207496875U (en) | 2017-11-10 | 2017-11-10 | A kind of chain cover crank structure of bicycle sprocket wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207496875U true CN207496875U (en) | 2018-06-15 |
Family
ID=62503875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721500943.6U Expired - Fee Related CN207496875U (en) | 2017-11-10 | 2017-11-10 | A kind of chain cover crank structure of bicycle sprocket wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207496875U (en) |
-
2017
- 2017-11-10 CN CN201721500943.6U patent/CN207496875U/en not_active Expired - Fee Related
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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: 20180615 Termination date: 20181110 |