CN203309039U - Dual spring type tensioning wheel assembly used for engine - Google Patents
Dual spring type tensioning wheel assembly used for engine Download PDFInfo
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- CN203309039U CN203309039U CN2013203118307U CN201320311830U CN203309039U CN 203309039 U CN203309039 U CN 203309039U CN 2013203118307 U CN2013203118307 U CN 2013203118307U CN 201320311830 U CN201320311830 U CN 201320311830U CN 203309039 U CN203309039 U CN 203309039U
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- tension arms
- elastic element
- wheel assembly
- pedestal
- spring
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Abstract
The utility model relates to a dual spring type tensioning wheel assembly used for an engine. The dual spring type tensioning wheel assembly comprises a belt pulley, a tension arm and a substrate, wherein the belt pulley is arranged on one end of the tension arm, the tension arm is arranged on the substrate in a matching manner and is rotated around a central axis relative to the substrate, the central axis is a mandrel, a neck bush connected to the tension arm and the substrate in a matching manner is arranged on the mandrel, the tension arm and the substrate are connected to form a cavity, an elastic element is arranged in the cavity, one end of the elastic element is connected to the substrate, and the other end of the elastic element is connected to the tension arm. The elastic element is used for biasing the tension arm, so that the tension arm is moved to a specific direction relative to the substrate. The dual spring type tensioning wheel assembly used for the engine, provided by the utility model, has the advantages of compact structure, simple process, low production cost, and capability of providing a larger torque value, reducing frictional damping and prolonging the service life, is suitable for a narrow mounting space of the engine, and solves the problem caused by a non-standard spring.
Description
Technical field
The utility model relates to a kind of automobile engine front end accessory drive unit, particularly a kind of motor Double-spring stretching wheel assembly.
Background technique
Along with the development of automotive industry, the Consumer is more and more higher to the performance requirement of automobile product, especially the NVH(Noise noise of motor, Vibration vibration and Harshness sound vibration roughness) problem, receive much concern.Motor is as " heart " of automobile, the performance of car load is had to vital impact, and the drive system be comprised of belt, driving wheel, stretcher etc. is the main source of motor NVH.
Most of motor for automobile etc. all comprises a plurality of bel-drivenn accessory systems, and it is necessary that these systems are that vehicle runs well.The motor head accessory drive system can comprise bent axle, water pump, air condition compressor, servosteering wheel and alternator etc.In present drive system, be to use single serpentine belt basically, roundabout each annex of walking around,, run well thereby drive each annex with the transmission of power by the motor generation in described annex.For normally running accurately, described serpentine belt must have certain initial installation tension when installing.When described drive system running, described belt there will be certain wearing and tearing and creep, causes belt to elongate, thereby causes belt tension to descend, and just likely causes the bad phenomenon such as belt slippage, belt abnormal sound.Therefore, need Idle wheel to provide certain tension force to belt.
Drive system is in operation process, along with speed do not stop change, between described belt and driving wheel, there will be certain howling, belt also there will be larger transverse vibration, and the belt of fast turn-around also likely applies excitation to the spring in Idle wheel, thereby cause the vibration of Idle wheel, these do not wish to occur, because they can aggravate the wearing and tearing of each annex, belt and Idle wheel, slow down its working life, so, damping mechanism in Idle wheel, be provided with, to suppress vibration, abate the noise.
Present motor head accessory drive system great majority are towards lightweight, high-power, environmental protection development; this just has higher requirement to Idle wheel; especially wish to obtain size little; the Idle wheel that torque value is large, and the torque value of Idle wheel depends on the spring that it uses, the design calculation result of drive system; requirement for Idle wheel might not be the spring size of standard just; yet spring in the market is in the majority with standard-sized spring, off-gauge spring is less.Off-gauge spring procurement cycle is long, and cost of production is high, does not also promote the use of on a large scale, thereby also with regard to the research and development of giving Idle wheel, has brought certain difficulty.
The model utility content
The utility model provides a kind of compact structure, technique is simple, cost of production is low motor Double-spring stretching wheel assembly, larger torque value can be provided, reduce frictional damping, increase the service life, adapt to the narrow installing space of motor, and can solve the problem that non-standard spring brings.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of motor Double-spring stretching wheel assembly, comprise belt wheel, tension arms, pedestal, described belt wheel cooperation is arranged on tension arms one end, described tension arms cooperation is installed on pedestal, and rotate around a central axis with respect to pedestal, described central axis is a mandrel, on mandrel, be provided with the muff be used to be connected tension arms and pedestal, described tension arms and pedestal are connected and form a cavity, in this cavity, be provided with elastic element, described elastic element one end is connected with pedestal, and the other end is connected with tension arms.Elastic element, for the bias voltage tension arms, makes tension arms move towards specific direction with respect to pedestal.
As preferably, described elastic element is to be combined by two plane scroll springs.Elastic element in the utility model is combined by two plane scroll springs, and it has replaced the helical spring in existing Idle wheel.Because the helical spring axial dimension in existing structure is larger, the spring torque value that can produce is less, deformation angle is limited, that is to say, for same torque demand, helical spring axial dimension will be far longer than plane scroll spring, generally can reach 50～80 millimeters, and plane scroll spring only has 14～22 millimeters, march toward miniaturization, lightweight extremely is necessary for present motor head accessory drive system for this.Plane scroll spring of the present utility model is with elongated spring material, turn to the linear a kind of spring of snail, its winding shaping is fairly simple, the coiling number of turns can be a lot, the distortion angle can be very large, has the advantages that in smaller size smaller, to store more energy, and, the rigidity of plane scroll spring can be very little, can have long working life.In addition, adopt two plane scroll springs to be used in combination, increased the damping function of Idle wheel, this noise abatement for drive system and vibration damping have positive effect, on the other hand, have also increased the safety reliability of Idle wheel.
As preferably, described tension arms has a pivot, on pivot, has slit, and the size of this slit matches with the size of described elastic element end.
As preferably, between described elastic element and described tension arms, be equipped with eccentric washer, described tension arms top is provided with groove, and described inside grooves is equipped with belleville spring, friction element and gland successively, forms the damping mechanism of described Idle wheel.Eccentric washer is for subduing elastic element at the caused eccentric phenomena of twist process.The damping mechanism of Idle wheel, for suppressing the belt vibration and the noise that due to engine running, cause.
As preferably, described belt wheel is connected at tension arms one end by bolt, is equipped with bearing between described belt wheel and tension arms, is equipped with dust cover between described bearing and belt wheel.
As preferably, the groove center of described tension arms arranges a boss, and the center of boss has a penetration hole, is used for connecting described pedestal by described mandrel.The internal diameter of described belleville spring matches with described boss, and described butterfly spring can freely be arranged in described tension arms groove.
The beneficial effects of the utility model are: the utility model motor with Double-spring stretching wheel assembly compact structure, technique is simple, cost of production is low, larger torque value can be provided, reduce frictional damping, increase the service life, adapt to the narrow installing space of motor, solve the problem that non-standard spring brings.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model motor with one preferred embodiment of Double-spring Idle wheel;
Fig. 2 be the motor shown in Fig. 1 with the Double-spring stretching wheel assembly along A-A to the sectional structure schematic diagram;
Fig. 3 is the exploded view of the utility model motor with the Double-spring stretching wheel assembly;
Fig. 4 is the perspective view of the pedestal of the Idle wheel shown in Fig. 3;
Fig. 5 is the perspective view of the tension arms of the Idle wheel shown in Fig. 3;
Fig. 6 is the perspective view of the friction element of the Idle wheel shown in Fig. 3;
Fig. 7 is the perspective view at another visual angle of the utility model friction element;
Fig. 8 is the utility model motor Double-spring Idle wheel structural representation from another viewpoint;
In accompanying drawing, the mark of each parts is as follows:
10. belt wheel 20. tension arms 30. pedestal 40. friction elements
11. belt wheel bolt 12. bearing 13. dust cover 21. pivots
22. groove 23. boss 24. first block 25. second blocks
26. slit 27. shallow slot 28. belt wheel attachment face 31. locating studs
32. the 3rd block 33. cavity 41. first rubbing surface 42. second rubbing surfaces
43. protruding 44. gland 45. butterfly spring 46. mandrels
47. muff 48. eccentric washer 49. fixing bolt 50. elastic elements
60. Idle wheel.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.Should be appreciated that enforcement of the present utility model is not limited to the following examples, any pro forma accommodation and/or change that the utility model is made all will fall into the utility model protection domain.
Embodiment:
A kind of motor Double-spring stretching wheel assembly, see Fig. 1, Fig. 2 and Fig. 3, comprise: belt wheel 10, tension arms 20, pedestal 30, belt wheel 10 cooperations are arranged on tension arms 20 1 ends, tension arms 20 cooperations are installed on pedestal 30, tension arms 20 rotates around a central shaft with respect to pedestal 30, central shaft is a mandrel 46, on mandrel 46, be provided with muff 47, for being connected tension arms 20 and pedestal 30, tension arms 20 and pedestal 30 are connected and form a cavity 33, in cavity 33, be provided with elastic element 50, for bias voltage tension arms 20, make tension arms 20 move towards specific direction with respect to pedestal 30, between elastic element 50 and tension arms 20, be equipped with eccentric washer 48, for subduing elastic element 50 at the caused eccentric phenomena of twist process, tension arms 20 tops are provided with groove 22, groove 22 inside are equipped with belleville spring 45 successively, friction element 40 and gland 44, form the damping mechanism of Idle wheel 60, for suppressing the belt vibration and the noise that due to engine running, cause.
In technique scheme, belt wheel 10 is connected at tension arms 20 1 ends by belt wheel bolt 11, between belt wheel and tension arms, is equipped with bearing 12, and belt wheel 10, together with bearing 12 is injection-moulded in, is equipped with dust cover 13 between bearing 12 and belt wheel 10.
Consult Fig. 7 and Fig. 3, elastic element 50 is spring, and is to be linked together and formed by two plane scroll springs, and elastic element 50 1 ends are connected with pedestal 30, and the other end is connected with tension arms 20.Consult Fig. 4, tension arms 20 has a pivot 21, a belt wheel attachment face 28, a groove 22.On the pivot 21 of tension arms 20, have slit 26, this slit 26 be dimensioned to the size matched with the curling end inwardly of elastic element 50.
In technique scheme, the groove 22 of tension arms 20 has certain depth, be used for setting gradually belleville spring 45, friction element 40, gland 44, and on the inwall of groove 22, open a shallow slot 27, be used for friction element 40 on projection 43 be used in conjunction with, in Idle wheel 60 normal operation processes, deflection appears to prevent friction element 40, also a plurality of shallow slots 27 can be set axially, and shallow slot 27 generally is arranged in the thicker place of groove 22 inwalls, this is to consider from the intensity of tension arms 20.
In technique scheme, groove 22 centers of tension arms 20 arrange a boss 23, and boss 23 centers have a penetration hole, are used for connecting pedestal 30 by mandrel 46.
Further consult Fig. 2, groove 22 inner convex platforms 23 of the internal diameter of belleville spring 45 and tension arms 20 are equipped with, guarantee that butterfly spring 45 can freely be arranged in the groove 22 of tension arms 20, and the mounting type of belleville spring 45, can require to place according to system torque, to obtain the torque value of different sizes.
Consult Fig. 5, pedestal 30 is provided with the 3rd block 32 on circumference, in the moving range that the first block 24 that can be on tension arms 20 and the second block 25 form, moves, with loading and the uninstall process that completes Idle wheel.
Consult Fig. 6 and Fig. 7, friction element 40 has and close-fitting the second rubbing surface 42 of butterfly spring 45, and simultaneously, the first rubbing surface 41 of friction element 40 closely cooperates with gland, this has just formed the damping mechanism of this Idle wheel, suppresses vibration and noise to produce frictional damping.Friction element 40 is formed by high-abrasive materials such as nylon, polyester plastics, has solved the drawbacks such as easy to wear, mutability, and raw material more easily obtain on market, and purchase cost is lower.
Be different from prior art, a kind of motor of the utility model is with the Double-spring tension wheel structure is compact, technique is simple, cost of production is low, larger torque value can be provided, reduced frictional damping, extended working life, adapt to the narrow installing space of motor, solved the problem that non-standard spring brings.
Above-described embodiment is a kind of preferably scheme of the present utility model, not the utility model is done to any pro forma restriction, under the prerequisite that does not exceed the technological scheme that claim puts down in writing, also has other variant and remodeling.
Claims (6)
1. motor Double-spring stretching wheel assembly, comprise belt wheel, tension arms, pedestal, described belt wheel cooperation is arranged on tension arms one end, described tension arms cooperation is installed on pedestal, and rotate around a central axis with respect to pedestal, described central axis is a mandrel, on mandrel, be provided with the muff be used to be connected tension arms and pedestal, it is characterized in that: described tension arms and pedestal are connected and form a cavity, in this cavity, be provided with elastic element, described elastic element one end is connected with pedestal, and the other end is connected with tension arms.
2. motor according to claim 1 Double-spring stretching wheel assembly, it is characterized in that: described elastic element is to be combined by two plane scroll springs.
3. motor according to claim 1 and 2 Double-spring stretching wheel assembly, it is characterized in that: described tension arms has a pivot, on pivot, has slit, and the size of this slit matches with the size of described elastic element end.
4. motor according to claim 1 and 2 Double-spring stretching wheel assembly, it is characterized in that: be equipped with eccentric washer between described elastic element and described tension arms, described tension arms top is provided with groove, described inside grooves is equipped with belleville spring, friction element and gland successively, forms the damping mechanism of described Idle wheel.
5. motor according to claim 1 Double-spring stretching wheel assembly, it is characterized in that: described belt wheel is connected at tension arms one end by the belt wheel bolt, between described belt wheel and tension arms, be equipped with bearing, be equipped with dust cover between described bearing and belt wheel.
6. motor according to claim 1 Double-spring stretching wheel assembly, it is characterized in that: the groove center of described tension arms arranges a boss, and the center of boss has a penetration hole, and the internal diameter of described belleville spring matches with described boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203118307U CN203309039U (en) | 2013-06-03 | 2013-06-03 | Dual spring type tensioning wheel assembly used for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203118307U CN203309039U (en) | 2013-06-03 | 2013-06-03 | Dual spring type tensioning wheel assembly used for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203309039U true CN203309039U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203118307U Expired - Lifetime CN203309039U (en) | 2013-06-03 | 2013-06-03 | Dual spring type tensioning wheel assembly used for engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747669A (en) * | 2015-04-02 | 2015-07-01 | 常州机电职业技术学院 | Compact belt tensioning wheel |
| CN104989793A (en) * | 2015-05-27 | 2015-10-21 | 纽尚(宁波)汽车轴承制造有限公司 | Double-torque gear-changeable friction shoe type tensioner |
| CN108561517A (en) * | 2018-04-08 | 2018-09-21 | 无锡市贝尔特胶带有限公司 | The two-way automatic tensioner of non-equal brachiums |
| CN108561518A (en) * | 2018-04-08 | 2018-09-21 | 无锡市贝尔特胶带有限公司 | The two-way automatic tensioner of equal brachiums |
| CN109667897A (en) * | 2017-10-13 | 2019-04-23 | 舍弗勒技术股份两合公司 | Mechanical tensioner with dual torsion spring |
| CN108561517B (en) * | 2018-04-08 | 2024-07-26 | 无锡市贝尔特胶带有限公司 | Non-equal arm length bidirectional automatic tensioning wheel |
-
2013
- 2013-06-03 CN CN2013203118307U patent/CN203309039U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747669A (en) * | 2015-04-02 | 2015-07-01 | 常州机电职业技术学院 | Compact belt tensioning wheel |
| CN104989793A (en) * | 2015-05-27 | 2015-10-21 | 纽尚(宁波)汽车轴承制造有限公司 | Double-torque gear-changeable friction shoe type tensioner |
| CN104989793B (en) * | 2015-05-27 | 2017-08-29 | 纽尚(宁波)汽车轴承制造有限公司 | Double variable torque shelves friction shoe type stretchers |
| CN109667897A (en) * | 2017-10-13 | 2019-04-23 | 舍弗勒技术股份两合公司 | Mechanical tensioner with dual torsion spring |
| CN108561517A (en) * | 2018-04-08 | 2018-09-21 | 无锡市贝尔特胶带有限公司 | The two-way automatic tensioner of non-equal brachiums |
| CN108561518A (en) * | 2018-04-08 | 2018-09-21 | 无锡市贝尔特胶带有限公司 | The two-way automatic tensioner of equal brachiums |
| CN108561517B (en) * | 2018-04-08 | 2024-07-26 | 无锡市贝尔特胶带有限公司 | Non-equal arm length bidirectional automatic tensioning wheel |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315400 ce10, Far East Industrial City, Yuyao Economic Development Zone, Ningbo City, Zhejiang Province Patentee after: Zhejiang Fengmao Technology Co.,Ltd. Address before: 315400 ce10, Far East Industrial City, Yuyao Economic Development Zone, Ningbo City, Zhejiang Province Patentee before: Ningbo Fengmao Far-East Rubber Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |