CN201902500U - Continuously variable transmission drive system for motorcycle - Google Patents
Continuously variable transmission drive system for motorcycle Download PDFInfo
- Publication number
- CN201902500U CN201902500U CN2011200642664U CN201120064266U CN201902500U CN 201902500 U CN201902500 U CN 201902500U CN 2011200642664 U CN2011200642664 U CN 2011200642664U CN 201120064266 U CN201120064266 U CN 201120064266U CN 201902500 U CN201902500 U CN 201902500U
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- belt
- motorcycle
- layer
- rubber layer
- continuously variable
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Abstract
In order to solves the problems that the velocity ratio of a continuously variable transmission for a motorcycle is rigorous, and when the motorcycle runs at a high speed, the bending radius of a belt is too small, the tooth bottom stress is too large and the tooth bottom of the belt cracks, the utility model provides the continuously variable transmission drive system for the motorcycle. The drive system uses the following drive belt for the motorcycle: an undermost layer of the transmission belt for the motorcycle is an elastic rubber layer. A support canvas layer at the undermost (innermost) layer is eliminated so that the belt has better flexibility and circumnutating property; when the CVT (continuously variable transmission) velocity ratio becomes small, because of the property of rubber, the bending radius of the belt can change freely within a large range, and more internal stress is released; and compared with the prior art, the cracking phenomenon of the tooth bottom of the belt is greatly reduced. Moreover, the drive system is beneficial to the cost and the process.
Description
Technical field
The utility model relates to motor stepless speed variator of vehicle transmission system.
Background technique
Now all there is canvas at the bottom of one deck tooth in the motorcycle of each brand with drivign belt, and this purpose is in order to extenuate the long playing fatigue of belt, whole belt to be formed support, preventing to ftracture too early at the bottom of the belt teeth.Yet when this belt is driving the CVT(stepless speed variator) during the card transmission, the problem of cracking occurs often at the bottom of the tooth, and belt falls tooth from body prematurely, causes transmission failure.Those of ordinary skill in the art does not find the basic reason of this problem of generation always.
The model utility content
The purpose of this utility model promptly is to provide a kind of motor stepless speed variator of vehicle transmission system that can overcome above-mentioned defective.
For achieving the above object, the utility model proposes a kind of transmission system of motor stepless speed variator of vehicle, this buncher has 0.65 ~ 2.4 speed ratio, wherein, described transmission system is used following motorcycle drivign belt: this motorcycle is elastic rubber layer with the bottom of drivign belt.
In a possible embodiment, this elastic rubber layer is the fiber reinforced rubber layer.
In a possible embodiment, described fiber reinforced rubber layer top is adhesive glue, another fiber reinforced rubber layer and top layer of cloth successively.
In a possible embodiment, admixture is useful on the cotton rope of tension in the described adhesive glue.
Be according to useful technique effect of the present utility model: do not had the support canvas at the bottom of the tooth of belt, directly utilize the characteristic of elastic rubbery body, allow belt have better pliability and circumnutating property, when the CVT speed ratio from large to small, because the characteristic of rubber, the bending radius of belt can freely change within on a large scale, discharges more internal stress, compare present structure, the cracking situation greatly reduces at the bottom of the belt teeth.In addition, also of great advantage for cost and process aspect, can eliminating ultrasound, to sew up the overlap joint of canvas bad, simplified process step.In addition, the transmission system according to motor stepless speed variator of vehicle of the present utility model can reduce the number of times that belt was changed or safeguarded to needs effectively after having used drivign belt of the present utility model.
Description of drawings
Fig. 1 and Fig. 2 show transverse sectional view and the longitudinal sectional view of traditional motorcycle with drivign belt respectively.
Fig. 3 and Fig. 4 show respectively according to transverse sectional view and the longitudinal sectional view of motorcycle of the present utility model with drivign belt.
Fig. 5 schematically shows the transmission system according to motor stepless speed variator of vehicle of the present utility model, and it has used according to drivign belt of the present utility model.
Embodiment
Traditional motorcycle drivign belt is a multi-layer structure, comprises elastic rubber layer (for example constituting the fiber reinforced rubber layer of belt flute profile) and other layers of support canvas layer that is positioned at the bottom (the most inboard) and the top that is positioned at described support canvas layer (also being the outside).Described " other layers " is known to those skilled in the art, for example comprises top layer of cloth etc. according to different situations.
As depicted in figs. 1 and 2, exemplary nonrestrictive motorcycle with drivign belt 10 from top to bottom (from outside to inside in other words) comprise successively: the cotton rope that be used for tension 14 of top layer of cloth 11, fiber reinforced rubber layer 12, bonding glue-line 13 and the admixture of the top (being outermost) in bonding glue-line, be positioned at bonding glue-line 13 below (inboard) constitute the fiber reinforced rubber layer 15 of belt flute profile and be positioned at the bottom
The support canvas layer 16 of (the most inboard).Fiber reinforced rubber layer 12 normally is made of identical elastic rubber material with fiber reinforced rubber layer 15.
This traditional motorcycle is used drivign belt 10 in use, and the trapezoidal side of belt directly contacts with the card of buncher, and during belt process buncher, meeting is the support canvas layer 16 of the tired bottom that circumnutates repeatedly.This traditional belt is driving the CVT(stepless speed variator) during the card transmission, the problem of cracking occurs often at the bottom of the belt teeth, and this has reduced the life-span of belt.
The utility model designer is by discovering, the reason of cracking is because the requirement of each type when the design transmission speed ratio is closely not identical at the bottom of the belt teeth, causes the belt bending radius of driving wheel side that very big difference is arranged.Especially when the scope of CVT speed ratio was relatively harsher, as 0.65-2.4, then when high regime was moved, the bending radius of belt was too small, and localized stress is excessive at the bottom of the tooth, causes ftractureing at the bottom of the belt teeth.The utility model the designer further discover, causes that the excessive a big chunk reason of localized stress is because the cause that supports canvas layer has been arranged at the bottom of the tooth.
Therefore, be that with the difference of drivign belt it is not provided with the support canvas layer at the bottom (the most inboard) with drivign belt and traditional motorcycle according to motorcycle of the present utility model.Especially, be elastic rubber layer according to motorcycle of the present utility model with the bottom of drivign belt.Preferably, this elastic rubber layer is for constituting the fiber reinforced rubber layer of belt flute profile.
Particularly, as shown in Figure 3 and Figure 4, according to exemplary nonrestrictive motorcycle of the utility model with drivign belt 100 from top to bottom (from outside to inside in other words) comprise successively: the cotton rope that be used for tension 104 of top layer of cloth 101, fiber reinforced rubber layer 102, bonding glue-line 103 and the admixture of the top (being outermost surface) in bonding glue-line, be positioned at the fiber reinforced rubber layer 105 of the formation belt flute profile of (inboard) below the bonding glue-line 103.
Using in the drivign belt 100 according to motorcycle of the present utility model, at the bottom support canvas layer 16 be not set as traditionally, on the contrary, its bottom (la m) is an elastic rubber layer, and promptly the fiber reinforced rubber layer 105.
Inventor of the present utility model has been found that, by the motorcycle drivign belt as above is set, promptly cancel the support canvas layer of the bottom (innermost layer), belt has had better pliability and circumnutating property, when the CVT speed ratio changes, because the characteristic of rubber, the bending radius of belt can freely change within on a large scale, discharges more internal stress, compares present structure, the cracking situation greatly reduces at the bottom of the belt teeth, thereby belt life increases greatly.The related experiment data show, (for example when the two-stroke of 150CC or four stroke engine rotating speed are being higher than 7800RPM under the equal conditions of (this parameter is decided by the motorcycle different displacements), can increase to some extent than the life-span of conventional belt according to life-span of drivign belt of the present utility model at high speed operation.In addition, also of great advantage for cost and process aspect, can eliminating ultrasound, to sew up the overlap joint of canvas bad, simplified process step.
Belt of the present utility model also is specially adapted to the transmission system of the motorcycle stepless speed changer of wide speed ratio (for example have 0.65 ~ 2.4 speed ratio), as shown in Figure 5.The transmission system of the speed changer of this wide speed ratio can significantly improve operating life under the prerequisite that still requires wide ratio coverage after combining belt of the present utility model.
Claims (4)
1. the transmission system of a motor stepless speed variator of vehicle, this buncher has 0.65 ~ 2.4 speed ratio, it is characterized in that, and described transmission system is used following motorcycle drivign belt: this motorcycle is elastic rubber layer with the bottom of drivign belt.
2. the transmission system of motor stepless speed variator of vehicle as claimed in claim 1 is characterized in that, this elastic rubber layer is for constituting the fiber reinforced rubber layer of belt flute profile.
3. the transmission system of motor stepless speed variator of vehicle as claimed in claim 2 is characterized in that, described fiber reinforced rubber layer top is adhesive glue, another fiber reinforced rubber layer and top layer of cloth successively.
4. the transmission system of motor stepless speed variator of vehicle as claimed in claim 3 is characterized in that, admixture is useful on the cotton rope of tension in the described adhesive glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200642664U CN201902500U (en) | 2011-03-11 | 2011-03-11 | Continuously variable transmission drive system for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200642664U CN201902500U (en) | 2011-03-11 | 2011-03-11 | Continuously variable transmission drive system for motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902500U true CN201902500U (en) | 2011-07-20 |
Family
ID=44273095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200642664U Expired - Fee Related CN201902500U (en) | 2011-03-11 | 2011-03-11 | Continuously variable transmission drive system for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458050A (en) * | 2017-02-22 | 2018-08-28 | 盖茨优霓塔传动系统(苏州)有限公司 | V-ribbed belt |
-
2011
- 2011-03-11 CN CN2011200642664U patent/CN201902500U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458050A (en) * | 2017-02-22 | 2018-08-28 | 盖茨优霓塔传动系统(苏州)有限公司 | V-ribbed belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: The Gates Corporation Assignor: Gates Unitta Power Transmission (Suzhou) Limited Contract record no.: 2012990000040 Denomination of utility model: Continuously variable transmission drive system for motorcycle Granted publication date: 20110720 License type: Common License Record date: 20120203 |
|
| 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: 20110720 Termination date: 20180311 |