CN204140792U - A kind of asymmetric damping tensioner - Google Patents
A kind of asymmetric damping tensioner Download PDFInfo
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- CN204140792U CN204140792U CN201420540312.7U CN201420540312U CN204140792U CN 204140792 U CN204140792 U CN 204140792U CN 201420540312 U CN201420540312 U CN 201420540312U CN 204140792 U CN204140792 U CN 204140792U
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Abstract
A kind of asymmetric damping tensioner, comprise housing back seat and the housing protecgulum of mutual rotatable engagement, the inner peripheral surface rotatable engagement that the outer peripheral surface that the rear support arranged in the middle part of described housing back seat is overlapped is overlapped by the front support arranged in the middle part of lasso and housing protecgulum, described front support is overlapped and spring bracket rotatable engagement coaxially sheathed on its outer peripheral surface, on the outer peripheral surface of described spring bracket nearly housing back seat side, coaxial sleeve is provided with pressure bearing shell, on the outer peripheral surface of pressure bearing shell, coaxial sleeve is provided with spring, and the two ends of spring are fixedly connected with housing back seat, housing protecgulum respectively; On the outer peripheral surface of described spring bracket nearly housing protecgulum side, coaxial sleeve is provided with damping sleeve, and damping sleeve is arranged between spring bracket and spring, and the inner peripheral surface of damping sleeve is connected with the outer peripheral surface interference of spring bracket.The design can not only adjust Idle wheel damping, extend its working life, and the stability of belt train can be improved, make improve 20% the working life of belt.
Description
Technical field
The utility model relates to a kind of tension wheel structure, particularly relates to a kind of asymmetric damping tensioner, the working life be specifically applicable to optimize Idle wheel damping characteristic, extending Idle wheel and belt.
Background technique
Modern Automobile Engine front end accessory belt drive train generally adopts automatic tensioner automatically to adjust, and automatic tensioner can adjust to compress belt automatically makes it keep suitable tension force.Idle wheel is in operation process, and the belt of motion may cause Idle wheel high vibration, and optimum in order to ensure system running, when wishing that belt drive Idle wheel is beated to the direction that moment is large, Idle wheel has larger damping, and suppression is beated too large; During Idle wheel resilience, Idle wheel has less damping, can not occur skidding by fast-holding belt.These features can ensure that the reliability of system gets a promotion, and need to consider a kind of asymmetric damping tensioner for this reason.
Chinese patent Authorization Notice No. is CN203176275U, and authorized announcement date is that the utility model patent on September 4th, 2013 is openly known clearly a kind of tension pulley of new automobile motor, comprising: belt pulley, rocking arm, spring part, pressure bearing shell, bearing shell, and base; Described spring part is compound torsion spring, and compound torsion spring comprises: torsion spring and rubber; Described torsion spring, it is wrapped up by rubber.Although this model utility can change Idle wheel damping characteristic to a certain extent, still there is following defect in it:
1, rubber is wrapped on torsion spring by this model utility, when Idle wheel loads, because the rigidity of rubber is less, enough large damping can not be produced to the impacting force of belt, still can cause the shake of Idle wheel, belt, have impact on the stability of power system, shorten belt and Idle wheel life-span.
2, rubber is wrapped on torsion spring by this model utility, and rubber produces deformation with the torsion of spring, easily causes rubber to tear; And rubber belongs to easily aging material, along with the various aspects of performance of the increase rubber of service time declines gradually, thus shorten the working life of Idle wheel.
Summary of the invention
The purpose of this utility model overcomes the problem that Idle wheel shake is large, working life is short existed in prior art, provides a kind of and shake asymmetric damping tensioner that is little, long service life.
For realizing above object, technical solution of the present utility model is:
A kind of asymmetric damping tensioner, comprise housing back seat and the housing protecgulum of mutual rotatable engagement, the inner peripheral surface rotatable engagement that the outer peripheral surface that the rear support arranged in the middle part of described housing back seat is overlapped is overlapped by the front support arranged in the middle part of lasso and housing protecgulum, described front support is overlapped and spring bracket rotatable engagement coaxially sheathed on its outer peripheral surface, on the outer peripheral surface of described spring bracket nearly housing back seat side, coaxial sleeve is provided with pressure bearing shell, on the outer peripheral surface of pressure bearing shell, coaxial sleeve is provided with spring, and the two ends of spring are fixedly connected with housing back seat, housing protecgulum respectively;
On the outer peripheral surface of described spring bracket nearly housing protecgulum side, coaxial sleeve is provided with damping sleeve, and damping sleeve is arranged between spring bracket and spring, and the inner peripheral surface of damping sleeve is connected with the outer peripheral surface interference of spring bracket.
The internal diameter of described spring is than the large 0.2 milli rice – 1 millimeter of the external diameter of damping sleeve.
The wall thickness of described damping sleeve is 3 Hao meter – 5 millimeters.
Described damping sleeve is made by PA, PET, PE or PVC plastic.
Compared with prior art, the beneficial effects of the utility model are:
1, in a kind of asymmetric damping tensioner of the utility model in the spring portion be provided with damping sleeve, when the structure of damping sleeve makes Idle wheel load, damping increases gradually, suppresses beating of belt and Idle wheel; When making Idle wheel unload, damping diminishes simultaneously, makes Idle wheel fast-holding belt, prevents belt slippage, thus the effective slack list belt that reduces fluctuates, and improves the stability of belt train, makes improve 20% the working life of belt.Therefore, the design can extend the working life of belt, improve the stability of belt train.
2, in a kind of asymmetric damping tensioner of the utility model in the spring portion be provided with damping sleeve, utilize damping sleeve supported spring, reduce the deformation quantity of spring, reduce the deformation chattering frequency of spring, thus reduce the metal fatigue degree of spring, extend the working life of spring, and then extend the working life of Idle wheel.Therefore, the design damping sleeve available protecting spring, extend working life of Idle wheel.
3, the inner circumference diameter of a kind of asymmetric damping tensioner of the utility model medi-spring is than the large 0.2 milli rice – 1 millimeter of the excircle diameter of damping sleeve, such design makes to form gap between spring and damping sleeve, the free torsion space certain to spring block adjusts its amount of tension, when Idle wheel is loaded into a certain degree, just increase the loading damping of Idle wheel, reduce the shake that belt produces because rotating speed is too fast.Therefore, the dampening adjustment limits of the design is reasonable, can adapt to the demand that Idle wheel runs well.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the A – A of Fig. 1 is to sectional view.
In figure: housing back seat 1, rear support cover 11, housing protecgulum 2, front support cover 21, lasso 3, spring bracket 4, pressure bearing shell 5, spring 6, damping sleeve 7.
Embodiment
Illustrate below in conjunction with accompanying drawing and with embodiment, the utility model to be described in further detail.
See Fig. 1, Fig. 2, a kind of asymmetric damping tensioner, comprise housing back seat 1 and the housing protecgulum 2 of mutual rotatable engagement, the outer peripheral surface of the rear support cover 11 arranged in the middle part of described housing back seat 1 overlaps the inner peripheral surface rotatable engagement of 21 by the front support arranged in the middle part of lasso 3 and housing protecgulum 2, described front support overlaps spring bracket 4 rotatable engagement coaxially sheathed on 21 and its outer peripheral surface, on the outer peripheral surface of nearly housing back seat 1 side of described spring bracket 4, coaxial sleeve is provided with pressure bearing shell 5, on the outer peripheral surface of pressure bearing shell 5, coaxial sleeve is provided with spring 6, the two ends of spring 6 respectively with housing back seat 1, housing protecgulum 2 is fixedly connected with,
On the outer peripheral surface of nearly housing protecgulum 2 side of described spring bracket 4, coaxial sleeve is provided with damping sleeve 7, and damping sleeve 7 is arranged between spring bracket 4 and spring 6, and the inner peripheral surface of damping sleeve 7 is connected with the outer peripheral surface interference of spring bracket 4.
The internal diameter of described spring 6 is than the large 0.2 milli rice – 1 millimeter of the external diameter of damping sleeve 7.
The wall thickness of described damping sleeve 7 is 3 Hao meter – 5 millimeters.
Described damping sleeve 7 is made by PA, PET, PE or PVC plastic.
Principle of the present utility model is described as follows:
Asymmetric damping: the design is provided with damping sleeve 7 in the middle part of spring 6, when Idle wheel loads, spring 6 diminishes by warping force internal diameter, after knowing that spring 6 contacts with the outer peripheral surface of damping block 7, spring 6 pairs of damping sleeves 7 apply pressure makes damping block 7 produce deformation, damping block after deformation 7 pairs of springs 6 produce reaction force and stop spring 6 internal diameter to diminish, thus increase damping when Idle wheel loads; When Idle wheel unloads, the 7 pairs of springs 6 of the damping block after deformation produce the power promoting that spring 6 internal diameter increases, thus damping when reducing Idle wheel unloading.Damping in the compression and decompression process of therefore the design's Idle wheel is asymmetric, i.e. asymmetric damping.
The material of damping block 7: because damping block 7 selects plastic production, the good properties of plastic material itself, wear-resisting, impact-resistant have certain elasticity simultaneously, and above-mentioned performance meets the requirement of the design to damping block 7 mechanical property.During work, the outer peripheral surface of damping block 7, by friction and Extrusion repeatedly, needs to have more excellent wear-resisting property, the plastic materials of compression resistance manufactures.
PA plastics (nylon, polyamide): PA(Polyamide) plastics are resins that a company of the U.S. develops at first for fiber.Start development and production injection-molded article the 1950's, the requirement meet the lightweight of downstream industry goods with substituted metal, reducing costs.PA has good combination property, comprise mechanical property, heat resistance, wearability, chemical proofing and self lubricity, and friction factor is low, there is certain flame retarding, be easy to processing, be suitable for, by glass fibre and other filler filling enhancing modified, improving performance and expanding application area.
PET: PET(Polyethylene terephthalate) plastics and poly terephthalic acid class plastics are ivory or polymer that is light yellow, highly crystalline, surface smoothing is glossy.In wider temperature range, have excellent mechanical property, Long-Time Service temperature can reach 120 degrees Celsius, and electrical insulating property is excellent, even under high-temperature high-frequency, its electrical property is still better, has creep resistance simultaneously, fatigue resistance, the feature of rub resistance, good stability of the dimension.
PE plastics: PE(Polyethylene) plastics and polyvinyl plastics, have corrosion resistance, electrical insulating property, low pressure polyethylene is suitable for making corrosion-resistant part and insulating part; Ultra-high molecular weight polyethylene is suitable for making damping, wear-resisting and driving parts.
PVC plastic: PVC (polyvinyl chloride) plastics and igelite, pure Corvic is hard thermoplastic material, and its decomposition temperature and plasticization temperature are very close, and mechanical strength is poor.Therefore, product processed cannot be moulded with Corvic, plasticizing agent, stabilizer, filler etc. must be added with improving SNR, make igelite, and then be processed into part.
Embodiment 1:
See Fig. 1, Fig. 2, a kind of asymmetric damping tensioner, comprise housing back seat 1 and the housing protecgulum 2 of mutual rotatable engagement, the outer peripheral surface of the rear support cover 11 arranged in the middle part of described housing back seat 1 overlaps the inner peripheral surface rotatable engagement of 21 by the front support arranged in the middle part of lasso 3 and housing protecgulum 2, described front support overlaps spring bracket 4 rotatable engagement coaxially sheathed on 21 and its outer peripheral surface, on the outer peripheral surface of nearly housing back seat 1 side of described spring bracket 4, coaxial sleeve is provided with pressure bearing shell 5, on the outer peripheral surface of pressure bearing shell 5, coaxial sleeve is provided with spring 6, the two ends of spring 6 respectively with housing back seat 1, housing protecgulum 2 is fixedly connected with, on the outer peripheral surface of nearly housing protecgulum 2 side of described spring bracket 4, coaxial sleeve is provided with damping sleeve 7, damping sleeve 7 is arranged between spring bracket 4 and spring 6, the inner peripheral surface of damping sleeve 7 is connected with the outer peripheral surface interference of spring bracket 4, the internal diameter of described spring 6 is than the large 0.2 milli rice – 1 millimeter of the external diameter of damping sleeve 7, and the wall thickness of described damping sleeve 7 is 3 milli rice – 5 millimeters.Described damping sleeve 7 is made by PA, PET, PE or PVC plastic.
Claims (4)
1. an asymmetric damping tensioner, comprise housing back seat (1) and the housing protecgulum (2) of mutual rotatable engagement, the outer peripheral surface of the rear support cover (11) that described housing back seat (1) middle part is arranged passes through the inner peripheral surface rotatable engagement of the front support cover (21) that lasso (3) is arranged with housing protecgulum (2) middle part, spring bracket (4) rotatable engagement coaxially sheathed on described front support cover (21) and its outer peripheral surface, on the outer peripheral surface of nearly housing back seat (1) side of described spring bracket (4), coaxial sleeve is provided with pressure bearing shell (5), on the outer peripheral surface of pressure bearing shell (5), coaxial sleeve is provided with spring (6), the two ends of spring (6) respectively with housing back seat (1), housing protecgulum (2) is fixedly connected with, it is characterized in that:
On the outer peripheral surface of nearly housing protecgulum (2) side of described spring bracket (4), coaxial sleeve is provided with damping sleeve (7), damping sleeve (7) is arranged between spring bracket (4) and spring (6), and the inner peripheral surface of damping sleeve (7) is connected with the outer peripheral surface interference of spring bracket (4).
2. a kind of asymmetric damping tensioner according to claim 1, is characterized in that: the internal diameter of described spring (6) is than the large 0.2 milli rice – 1 millimeter of the external diameter of damping sleeve (7).
3. a kind of asymmetric damping tensioner according to claim 1 and 2, is characterized in that: the wall thickness of described damping sleeve (7) is 3 Hao meter – 5 millimeters.
4. a kind of asymmetric damping tensioner according to claim 1 and 2, is characterized in that: described damping sleeve (7) is made by PA, PET, PE or PVC plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540312.7U CN204140792U (en) | 2014-09-19 | 2014-09-19 | A kind of asymmetric damping tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540312.7U CN204140792U (en) | 2014-09-19 | 2014-09-19 | A kind of asymmetric damping tensioner |
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| Publication Number | Publication Date |
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| CN204140792U true CN204140792U (en) | 2015-02-04 |
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| CN201420540312.7U Active CN204140792U (en) | 2014-09-19 | 2014-09-19 | A kind of asymmetric damping tensioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076294A (en) * | 2022-06-15 | 2022-09-20 | 莱顿汽车部件（苏州）有限公司 | Damper wheel for rotating body and automobile |
| CN115076294B (en) * | 2022-06-15 | 2024-05-28 | 莱顿汽车部件（苏州）有限公司 | Vibration damping wheel for rotating body and automobile |
-
2014
- 2014-09-19 CN CN201420540312.7U patent/CN204140792U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076294A (en) * | 2022-06-15 | 2022-09-20 | 莱顿汽车部件（苏州）有限公司 | Damper wheel for rotating body and automobile |
| CN115076294B (en) * | 2022-06-15 | 2024-05-28 | 莱顿汽车部件（苏州）有限公司 | Vibration damping wheel for rotating body and automobile |
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