CN206958209U - One-way buffer belt pulley - Google Patents
One-way buffer belt pulley Download PDFInfo
- Publication number
- CN206958209U CN206958209U CN201720140721.1U CN201720140721U CN206958209U CN 206958209 U CN206958209 U CN 206958209U CN 201720140721 U CN201720140721 U CN 201720140721U CN 206958209 U CN206958209 U CN 206958209U
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- CN
- China
- Prior art keywords
- bracket
- spring
- belt pulley
- mandrel
- friction
- Prior art date
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Abstract
The utility model discloses a kind of one-way buffer belt pulley, for transmitting unidirectional torque between belt rim and rotating shaft and realizing buffer shock-absorbing, it is characterised in that including：One mandrel, and with the relatively-stationary bracket in mandrel position, one friction spring is installed on the bracket, the first end of the friction spring is located in the spring groove of the bracket, the bracket is made up of elastomeric material, when the friction spring external diameter changes, extruding force of the bracket by the first end of the friction spring.
Description
Technical field
A kind of one-way buffer belt pulley is the utility model is related to, it is particularly a kind of to be arranged on alternating current generator power transmission shaft,
So that the speed of belt pulley fluctuates the exchange reduced relative to alternating current generator power transmission shaft due to engine speed fluctuations reason
Generator one-way buffer belt pulley.
Background technology
One-way belt pulley for alternating-current generator is mainly used in train tensile force fluctuation before reducing, and improves each zero of front end wheel train
The part life-span；The fluctuation of speed of front end wheel train is reduced, reduces the noise of front end wheel train；Reverse impact is avoided, effectively protects generator；
Energy expenditure caused by generator hair turns is reduced, saves the energy.
Technical scheme as disclosed in CN100335808, the technical scheme include wheel hub, and wheel hub is fixedly mounted on transmission
On axle.Wheel hub has opposed first end and the second end and generally cylindrical body axially extending therebetween,
First flange of one annular is adjacent to the second end and extended radially outward from body portion.First flange includes outer flange surface, and this is convex
The overall diameter on edge surface is more than body portion, and an annular surface generally radially extends between body portion and outer flange surface, with
Two ends are relative.The first groove of a substantially helical shape is formed in annular surface.One bracket is rotatably installed on wheel hub.Support
Frame includes spiral second groove being formed within.One torsionspring extends between hub end and carrier end, in wheel hub
Moment of torsion is transmitted between bracket, wherein, hub end is maintained in spiral first groove, to prevent the wheel hub of torsionspring
Relative motion between end and wheel hub, carrier end is maintained in spiral second groove, to prevent the carrier end of torsionspring
The relative motion between bracket.One belt pulley is rotationally attached to wheel hub.Belt pulley includes an outer surface, outer surface design
Obtain and drive belt friction engagement.The belt pulley has inner surface formed therein.One clutch spring is fastened on bracket
Go up and there is the inner surface friction engagement of many spiral spring coils, these spring coils and belt pulley, with selectivity connect wheel hub with
Belt pulley.Torsionspring and clutch spring coil in opposite direction so that during belt pulley accelerates relative to wheel hub,
Clutch spring is expanded and clamps and engage with inner surface, and during belt pulley is relative to hub reduction, clutch spring
Shrink and depart from and engaged with inner surface clamping.The technical scheme can not eliminate caused resonance, meeting in alternator operation
Because resonance is broken torsionspring, so that one-way belt sheave premature failure.
Technical scheme as disclosed in CN104806729, the utility model provide a kind of one-way buffer belt pulley, the skin
Belt wheel includes pulley body and is separately positioned on the rolling bearing at the axis hole both ends of the pulley body, and is supported on two
Tooth axle on the individual rolling bearing；At least provided with a spring retainer on the tooth axle, the spring retainer is up to
One friction spring is installed less, one end of the friction spring is connected on the spring retainer, and along the tooth axle
Axial screw extend to form another free end, and cause in the axis hole of outer ring and the pulley body of the friction spring
Wall is in contact；The inwall of the pulley body axis hole is provided with the dashpot of the corresponding friction spring.The technical scheme is led to
The interaction of friction spring and the groove of belt pulley inwall is crossed, plays mono-directional overrun, accelerates vibration damping and subtracts the effect of frequency,
Make the stable working of motor front-end wheel system reliable, but the difficulty of processing in belt pulley inwall processing groove is big, processing cost
It is high.
Utility model content
The purpose of this utility model is to provide a kind of one-way buffer belt pulley, can both realize mono-directional overrun, accelerate to subtract
Shake, and it is simple in construction, difficulty of processing can be greatly reduced.
In order to realize above-mentioned purpose of utility model, the utility model discloses a kind of one-way buffer belt pulley, in belt
Unidirectional torque is transmitted between wheel rim and rotating shaft and realizes buffer shock-absorbing, including：One mandrel, and be relatively fixed with the mandrel position
Bracket, a friction spring is installed on the bracket, the first end of the friction spring is located in the spring groove of the bracket, the bracket by
Elastomeric material or composite are made, and when the friction spring external diameter changes, the bracket is by the first end of the friction spring
Extruding force.
Further, an at least gap is included on the bracket, the gap is used to accommodate the boss on the mandrel.
Further, the spring groove includes the first opening and the second opening, and first opening is located at the opening position.
Further, the second opening of the spring groove is positioned at the outside of the bracket, the first end of the friction spring from this
Second opening extends to first opening.
Further, a flange is included on the bracket, for fixing the friction spring.
Further, the bracket is made of plastics, and the friction spring and the mandrel are made up of alloy steel material.
Further, the spring groove is shaped as deep-slotted chip breaker or some sections of straight-line grooves by arc transition.
Further, the width of the spring groove is more than the width of the first end of the friction spring.The mandrel and belt pulley
Include at least one rolling bearing between body.The one-way buffer belt pulley also includes at least one closure.
Compared with prior art, it is the advantages of the technical program：Firstth, technical scheme provided by the utility model
When friction spring external diameter increases or reduces, elastic deformation, and then active buffer can occur by bracket, can be effectively real
Now accelerate vibration damping, subtract the technique effect of frequency；Secondth, technical scheme provided by the utility model is without the mandrel in alloy
Inwall is processed, therefore simple in construction, and part manufacturing process is uncomplicated and production assembly difficulty is smaller.
Brief description of the drawings
The advantages of on the utility model, can be described in detail with spirit by following utility model and institute's accompanying drawings are entered
The understanding of one step.
Fig. 1 is the sectional view of one-way buffer belt pulley provided by the utility model；
Fig. 2 is the top view of the bracket of one-way buffer belt pulley provided by the utility model；
Fig. 3 is the side view of the bracket of one-way buffer belt pulley provided by the utility model；
Fig. 4 is one of operating diagram of one-way buffer belt pulley of first embodiment provided by the utility model；
Fig. 5 is the two of the operating diagram of the one-way buffer belt pulley of first embodiment provided by the utility model；
Fig. 6 is one of operating diagram of one-way buffer belt pulley of second embodiment provided by the utility model；
Fig. 7 is the two of the operating diagram of the one-way buffer belt pulley of second embodiment provided by the utility model.
Mainly illustrate
1- pulley body 2- mandrel 21- mandrel boss
3- bracket 31- spring groove 32- holder flanges
4- back-up ring 5- friction spring 51- friction spring first ends
6- rolling bearing 7- closures
Embodiment
Describe specific embodiment of the utility model in detail below in conjunction with the accompanying drawings.
In the following description, will be by all multidirectionals in order to clearly show that structure and working method of the present utility model
Word is described, but should be by "front", "rear", "left", "right", " outer ", " interior ", " outside ", " inside ", " on ", " under "
Deng Word Understanding for convenience of term, and it is not construed as word of limitation.In addition, used in the following description " interior " one
Word is referred mainly to close to the direction of generator drive shaft；" outer " one word refers mainly to the direction away from generator drive shaft；" axial direction " one
Word refers mainly to the parallel direction of generator drive shaft, and " radial direction " one word refers mainly to the direction vertical with generator drive shaft.
The structure of one-way buffer belt pulley provided by the utility model is as shown in figure 1, Fig. 1 is the utility model is provided
One-way buffer belt pulley sectional view.The one-way buffer belt pulley include positioned at the rotating shaft in axle center and on the outside of the rotating shaft with
The mandrel 2 that rotating shaft is connected.The both ends of mandrel 2 set a rolling bearing 6 respectively, and pulley body is arranged on rolling bearing 6
Outside.Rolling bearing 6 is interference fitted with pulley body 1.At least one friction spring 5 is installed, rub bullet on mandrel 2
The side of spring 5 is bracket 3.Bracket 3 keeps relative position to fix with mandrel 2.Include at least one gap on bracket 3, for holding
Receive the mandrel boss 21 on the surface of mandrel 2.The shape of gap and position and mandrel boss 21 are basically identical, can when mandrel 2 rotates
To drive the synchronous rotary of bracket 3 with being engaged for gap by mandrel boss 21.In the preferred embodiment, the surface of mandrel 2 includes
Equally distributed four mandrel boss 21, also include four equally distributed gap on bracket 3.
One end of friction spring 5 is connected on bracket 3, and extends to form another free end along the axial screw of bracket 3,
And the outer ring of friction spring 5 is in contact with the shaft hole inner wall of pulley body 1, i.e. frictional engagement.So, the bullet that rubs is passed through
Pulley body 1 can be blocked and disengaged to the outer ring expansion and diminution of spring 5, and then play preferable one-way clutch effect.Specifically
Ground, when pulley body 1 is higher than rotating shaft rotating speed, the outer ring of friction spring 5, which swells, blocks pulley body 1, rotating shaft
It is combined into one with pulley body 1 so that rotating shaft and the synchronous rotary of pulley body 1, transmit driving activity of force；Work as belt pulley
When body 1 is lower than rotating shaft rotating speed, the outer ring of friction spring 5 reduces, and starts to skid in the axis hole of pulley body 1,
Rotating shaft and pulley body 1 disengage so that 1 each spinning of rotating shaft and pulley body, play protection and cushioning effect.
Fig. 2 is the top view of the bracket of one-way buffer belt pulley provided by the utility model.As shown in Fig. 2 this practicality
The bracket 3 of new provided one-way buffer belt pulley includes a spring groove 31 and a boss 32.Shown in the utility model
The high polymer material that bracket 3 has certain elasticity by plastics, rubber etc. is made.Spring groove 31 is shaped as a segmental arc or some
The straightway of arc transition.The starting point of spring groove 31 is located at the outside of bracket 3, and terminal is the inner side with bracket 3.Spring groove 31
Final position is a gap, and the gap is used for the mandrel boss 21 for accommodating mandrel 2.The first end 51 of friction spring 5 is located at spring
In groove 31, and shape and the shape of spring groove 31 are adapted.When friction spring first end 51 is located at the limit position of spring groove 31
When putting, friction spring first end 51 can be in contact with the mandrel boss 21 of mandrel 2.The holder flange 32 of bracket 3 is used to limit
The position of friction spring 5.As shown in figure 3, friction spring first end 51 is connected on bracket 3, and along the axial screw of bracket 3
Extension forms another free end.The external diameter of friction spring 5 and the external diameter of bracket 3 are substantially uniform.
As shown in figure 4, Fig. 4 is the work signal of the one-way buffer belt pulley of first embodiment provided by the utility model
Figure.So that belt pulley is rotated in a clockwise direction as an example, when the velocity of rotation of pulley body 1 is more than the velocity of rotation of mandrel 2,
Friction spring first end 51 is located in spring groove, and friction spring external diameter becomes big, inwall and the friction spring 5 of pulley body 1
Outer surface produces frictional force, and moment of torsion is delivered to mandrel from belt pulley.In the technical program, pulley body 1, friction spring 5
All it is made with mandrel 2 preferably by alloy steel material, and bracket 3 is made of plastic.Therefore the modulus of elasticity of bracket 3 is far below
The modulus of elasticity of the alloy steel material of friction spring 5.When transmitting moment of torsion, the first end 51 of friction spring is from side to bracket
3 form extruding, produce such as the power in Fig. 4 figure arrows.Bracket 3 is deformed by the extruding of friction spring first end 51, to friction
Spring 5 forms buffering, reduces friction spring Oscillation Amplitude so as to play a part of reducing speed.In a kind of preferred embodiment
In, friction spring first end 51 lies directly against mandrel directly against mandrel boss 21, the i.e. end of the first end 51 of friction spring
Boss 21.Mandrel 2 directly the power that friction spring first end 51 is formed can so be sponged, kept away made of steel alloy
Exempt from that the extruding to bracket 3 is excessive to cause bracket 3 can not to recover from deformation.
As shown in Fig. 5 figures, equally so that belt pulley is rotated clockwise as an example, when the speed of pulley body 1 is less than mandrel 2
During speed, mandrel 2 drives friction spring 5 to rotate by bracket 3, and spring diameter has the trend that diminishes.The inwall of pulley body 1 with
Frictional force disappears between the outer wall of friction spring 5, and formation surmounts.Friction spring first end 51 is formed from another side to bracket 3
Extruding, produce such as the power in Fig. 5 figure arrows.Bracket 3 is deformed by the extruding of friction spring first end 51, to friction spring 5
Buffering is formed, so as to play a part of reducing friction spring Oscillation Amplitude.
Fig. 6 and Fig. 7 is the operating diagram of the one-way buffer belt pulley of second embodiment provided by the utility model.
In the embodiment, the width of the spring groove 31 on bracket 3 is more than the width of friction spring first end 51.With pulley body up time
Exemplified by pin direction rotates, when the speed of pulley body 1 is more than mandrel 2, the diameter of friction spring 5 has change trend, belt pulley sheet
The inwall of body 1 produces frictional force with friction spring 5, and moment of torsion is delivered to mandrel 2, and the spring groove 31 of bracket 3 is wider than spring, and rub bullet
Spring first end 51 does bending movement in groove with the size of moment of torsion, plays the space and damping effect for keeping spring.Skin
Belt wheel is rotated clockwise, and when the speed of pulley body 1 is less than 2 speed of mandrel, mandrel 2 is by bracket 3 with dynamic friction bullet
Spring 5 rotates, and friction spring 5 stretches back the state of not stressing in bracket springs groove 31.Spring diameter has the trend that diminishes, in belt pulley
Wall skids with spring, and formation surmounts.
In another embodiment, the quantity of bracket 3 has two, and the quantity of friction spring 5 has two, two friction springs
5 are oppositely arranged on corresponding bracket 3 respectively.Two brackets 3 are arranged on mandrel 2 relative to one another.
Compared with prior art, it is the advantages of the technical program：
Firstth, technical scheme provided by the utility model can pass through when friction spring external diameter increases or reduces
Elastic deformation, and then active buffer occur for bracket, can effectively realize the technique effect for accelerating vibration damping, subtracting frequency；Secondth, originally
The technical scheme that utility model is provided is processed without the mandrel inwall in alloy, therefore simple in construction, part system
Make technique it is uncomplicated and production assembly difficulty it is smaller.
Simply preferred embodiment of the present utility model described in this specification, above example is only illustrating this
The technical scheme of utility model rather than to limitation of the present utility model.All those skilled in the art are logical according to design of the present utility model
The available technical scheme of logical analysis, reasoning, or a limited experiment is crossed, all should be within the scope of the utility model.
Claims (9)
1. a kind of one-way buffer belt pulley, for transmitting unidirectional torque between belt rim and rotating shaft and realizing buffer shock-absorbing,
It is characterised in that it includes：One mandrel, and with the relatively-stationary bracket in mandrel position, the friction of installation one on the bracket
Spring, the first end of the friction spring are located in the spring groove of the bracket, and the bracket is made up of elastomeric material, when described
When friction spring external diameter changes, extruding force of the bracket by the first end of the friction spring；Include extremely on the bracket
A few gap, the gap are used to accommodate the boss on the mandrel.
2. one-way buffer belt pulley as claimed in claim 1, it is characterised in that the spring groove includes the first opening and second
Opening, first opening are located at the opening position.
3. one-way buffer belt pulley as claimed in claim 2, it is characterised in that the second opening of the spring groove is positioned at described
The outside of bracket, the first end of the friction spring extend to first opening from the described second opening.
4. one-way buffer belt pulley as claimed in claim 1, it is characterised in that include a flange on the bracket, for solid
The fixed friction spring.
5. one-way buffer belt pulley as claimed in claim 1, it is characterised in that the bracket is by plastics or containing rubber combined material
Material is made, and the friction spring and the mandrel are made up of alloy steel material.
6. one-way buffer belt pulley as claimed in claim 1, it is characterised in that if the spring groove be shaped as deep-slotted chip breaker or
Do straight-line groove of the section by arc transition.
7. one-way buffer belt pulley as claimed in claim 1, it is characterised in that the width of the spring groove is more than the friction
The width of the first end of spring.
8. one-way buffer belt pulley as claimed in claim 1, it is characterised in that include between the mandrel and pulley body
At least one rolling bearing.
9. one-way buffer belt pulley as claimed in claim 1, it is characterised in that also including at least one closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140721.1U CN206958209U (en) | 2017-02-16 | 2017-02-16 | One-way buffer belt pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140721.1U CN206958209U (en) | 2017-02-16 | 2017-02-16 | One-way buffer belt pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206958209U true CN206958209U (en) | 2018-02-02 |
Family
ID=61377835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720140721.1U Expired - Fee Related CN206958209U (en) | 2017-02-16 | 2017-02-16 | One-way buffer belt pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206958209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443463A (en) * | 2017-02-16 | 2018-08-24 | 常州博立汽车科技有限公司 | One-way buffer belt pulley |
| CN109838473A (en) * | 2019-03-25 | 2019-06-04 | 常州博立汽车科技有限公司 | One kind surmounting decoupler |
-
2017
- 2017-02-16 CN CN201720140721.1U patent/CN206958209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443463A (en) * | 2017-02-16 | 2018-08-24 | 常州博立汽车科技有限公司 | One-way buffer belt pulley |
| CN109838473A (en) * | 2019-03-25 | 2019-06-04 | 常州博立汽车科技有限公司 | One kind surmounting decoupler |
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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: 20180202 Termination date: 20210216 |