CN107387691A - A kind of asymmetric damping structure tension wheel shaft bearing unit - Google Patents
A kind of asymmetric damping structure tension wheel shaft bearing unit Download PDFInfo
- Publication number
- CN107387691A CN107387691A CN201710579345.0A CN201710579345A CN107387691A CN 107387691 A CN107387691 A CN 107387691A CN 201710579345 A CN201710579345 A CN 201710579345A CN 107387691 A CN107387691 A CN 107387691A
- Authority
- CN
- China
- Prior art keywords
- spring
- mandrel
- wheel shaft
- shaft bearing
- bearing unit
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means
- F16H7/0831—Means for varying tension of belts, ropes, or chains with vibration damping means of the dry friction type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a kind of asymmetric damping structure tension wheel shaft bearing unit, including mandrel, the sleeve being installed on mandrel and the bearing being installed on sleeve, spring damping mechanism is also equipped with the mandrel, the spring damping mechanism includes the first spring base combined, second spring seat and Rectangular Spring, the Rectangular Spring is fixed with the first spring base, the Rectangular Spring coordinates with second spring seat for gap, axially the first side of the sleeve is provided with the stopper slot circumferentially locally extended, axially the second end of the second spring seat is provided with the positive stop lug boss of insertion stopper slot, the circumferential lengths of the stopper slot are more than the circumferential lengths of positive stop lug boss.Present invention decreases vibration of the belt in operation process, the service life of bearing and belt is improved, and reduces noise of the automobile in speed-change process.
Description
Technical field
The present invention relates to auto parts and components, and in particular to tensioning wheel.
Background technology
Existing tensioning wheel is higher to installation personnel technical requirements, if the installation of timing tensioning wheel position is not right, will lead
Tensioning wheel is caused to occur uttering long and high-pitched sounds and two kinds of problems of belt vibration in the course of the work, the belt of tensioning wheel operating may be in tensioning spring
In evoke vibration, it can cause tensioning wheel and belt premature abrasion, influence the service life of product and belt.
The content of the invention
The technical problems to be solved by the invention are just to provide a kind of asymmetric damping structure tension wheel shaft bearing unit, ensure
In the course of the work, damping structure can rotate in the clockwise direction, and opposite direction can only rotate reserved location, will progressively open automatically
Bearing up pulley is adjusted to optimum position.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of asymmetric damping structure tension wheel shaft
Bearing unit, spring damping mechanism is also equipped with the mandrel, and the spring damping mechanism includes the first bullet combined
Spring abutment, second spring seat and Rectangular Spring, the Rectangular Spring are fixed with the first spring base, the Rectangular Spring and the second bullet
Spring abutment coordinates for gap, and the sleeve is provided with the stopper slot circumferentially locally extended, axially the second end of the second spring seat
Positive stop lug boss provided with insertion stopper slot, the circumferential lengths of the stopper slot are more than the circumferential lengths of positive stop lug boss, the mandrel
The jump ring of the first spring base axial direction first end of limitation is provided with, the axial first end of the mandrel is provided with to spring damping mechanism
The end cap of axial limiting is carried out, axially the second end of the mandrel goes out provided with outside boss to be carried out axially to spring damping mechanism
Spacing locating flange.
Preferably, axially the second end of first spring base has been evenly distributed several grabs, second bullet
The endoporus of spring abutment is circumferentially provided with card convex in axial first end, and the card convex is caught in grab.
Preferably, the circumferential both sides of the grab are provided with the inner convex rib protruded to radially inner side.
Preferably, the endoporus of first spring base is provided with position limiting convex ring, the mandrel is provided with matches somebody with somebody with position limiting convex ring
The first spring base of limitation is closed to the limited step of axially the second end activity.
Preferably, the first end of the Rectangular Spring is provided with bending head, first spring base is provided with positioning hole, institute
State bending head and penetrate positioning hole.
Preferably, the radial outside of the Rectangular Spring is arranged with spring protecting sleeve, the axial direction first of the spring protecting sleeve
Side is provided with locating slot, and the axial first end of first spring base is provided with the positioning convex for penetrating locating slot.
Preferably, first spring base is provided with the annular groove for placing jump ring.
Preferably, the endoporus of the jump ring is interference fitted with mandrel, the opening both ends of the jump ring, which are provided with, to be flared out
Bending section,
Preferably, first spring base is provided with the jump-ring slot for entering bending section engaging.
Preferably, the endoporus of the end cap is provided with the bending part to axially the second side bending, and the bending part and mandrel
External diameter close-fitting is installed.
Preferably, first spring base is molded using PA66 material injections, the second spring seat uses PA66+
GF30 injection moldings.
The present invention increases a set of damping mechanism inside automatic tensioner, because Rectangular Spring and the first spring base are fixed,
The first spring base is rotated together with Rectangular Spring, because Rectangular Spring and second spring seat coordinate for gap, ensure certainly
It can be rotated freely during dynamic tensioning wheel work.
Due to being provided with the cooperation of positive stop lug boss and stopper slot between second spring seat and sleeve, damping structure can be in up time
Pin direction rotates, and opposite direction is more than the circumferential lengths of positive stop lug boss, in the course of the work, damping due to the circumferential lengths of stopper slot
Structure can rotate in the clockwise direction, and opposite direction can only rotate reserved location, and tensioning wheel progressively is adjusted into optimum bit automatically
Put.
The beneficial effects of the invention are as follows：Ensure the advantages of frictional damping is small when working acceleration, the structure design reduces
Vibration of the belt in operation process, improves the service life of bearing and belt, and reduces automobile in speed-change process
Noise, have the advantages that rational in infrastructure, easy to process, properties of product are reliable, meet belt tension pulley of automobile engine bearing
It is required that.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the cross-sectional view of the first spring base；
Fig. 3 is the axial arrangement schematic diagram of second spring seat；
Fig. 4 is the cross-sectional view of second spring seat；
Fig. 5 is the radial structure schematic diagram of second spring seat；
Fig. 6 is the structural representation of Rectangular Spring；
Fig. 7 is the structural representation of mandrel；
Fig. 8 is the structural representation of jump ring；
Fig. 9 is the structural representation of spring protecting sleeve.
Embodiment
A kind of asymmetric damping structure tension wheel shaft bearing unit as shown in Figures 1 to 9, including mandrel 4, it is installed on mandrel
On sleeve 7 and the bearing 8, the tensioning wheel spring 72 that are installed on sleeve 7.The present invention increases a set of inside tensioning wheel simultaneously
Spring damping mechanism, the spring damping mechanism include：First spring base 1, second spring seat 2 and Rectangular Spring 3, the first spring
Seat 1 and second spring seat 2 and Rectangular Spring 3 are combined on mandrel 4, the spring of Rectangular Spring 3 and first
Seat 1 is fixed, and the first spring base 1 is rotated together with Rectangular Spring 3, the Rectangular Spring 3 is matched somebody with somebody with second spring seat 2 for gap
Close, ensure to rotate freely during automatic tensioner work.Axially the first side of the sleeve is provided with what is circumferentially locally extended
Stopper slot 71, axially the second end of the second spring seat are provided with the positive stop lug boss 23 of insertion stopper slot, the stopper slot 71
Circumferential lengths be more than positive stop lug boss 23 circumferential lengths, the rotation-limited in stopper slot 71 of positive stop lug boss 23, in the course of the work,
Because stopper slot 71 can only rotate reserved location to the barrier effect of positive stop lug boss 23, spring damping structure opposite direction.Such as Fig. 3 institutes
Show, in the present embodiment, the development length of positive stop lug boss 23 is circumferential 90 °, for rotation-limited.The mandrel 4 is provided with limitation
The jump ring 5 of first spring base first end, endoporus and the mandrel 4 of the jump ring are interference fitted, fixed reliably and to the first spring base 1
Form reliable location.
Further, the radial outside of the Rectangular Spring is arranged with spring protecting sleeve 6, and spring protecting sleeve 6 uses PA66 materials
Injection molding.As shown in figure 9, axially the first side of the spring protecting sleeve is provided with locating slot 61.As shown in Fig. 2 first spring
The axial first end of seat is provided with the positioning convex 15 for penetrating locating slot 61.First spring base 1, second spring seat 2 and rectangle bullet
After spring 3 assembles, positioning convex 15 and locating slot 61 are assembled, spring damping structure is played a protective role.
Due to being provided with the cooperation of positive stop lug boss 23 and stopper slot 71 between second spring seat 2 and sleeve 7, damping structure can be with
Rotate in the clockwise direction, opposite direction is more than the circumferential lengths of positive stop lug boss due to the circumferential lengths of stopper slot, can only rotate pre-
Position is stayed, tensioning wheel is progressively adjusted to optimum position automatically, reaches damping structure asymmetric damping characteristics.Ensure to add in work
The advantages of frictional damping is small when fast, the structure design reduce vibration of the belt in operation process, improve bearing and belt
Service life, and reduce noise of the automobile in speed-change process, have that rational in infrastructure, easy to process, properties of product are reliable
The advantages that, meet the requirement of belt tension pulley of automobile engine bearing.
Wherein, as shown in Figures 2 to 5, axially the second end of first spring base has been evenly distributed several grabs
11, the endoporus of the second spring seat is circumferentially provided with card convex 21 in axial first end, and the card convex 21 is caught in grab 11, makes
One spring base 1 and second spring seat 2 are fitted together by simple buckle structure, and can conveniently be dismantled.In addition, the card
The circumferential both sides of hook are provided with the inner convex rib 111 protruded to radially inner side, to strengthen grab 11 structural strength of itself.
The axial first end of first spring base is circumferentially arranged with the first gear step 16, axially the second end of second spring seat
Circumferentially arranged with the second gear step 22, after the first spring base 1 and the assembling of second spring seat 2, the first gear step 16 and second
Gear step 22 coordinates the both ends of the surface progress to Rectangular Spring 3 spacing, prevents the axial float of Rectangular Spring 3.As shown in fig. 6, institute
The first end for stating Rectangular Spring is provided with bending first 31, first spring base be provided with the position of the first gear step 16 axially through
Positioning hole 13, the bending first 31 penetrates positioning hole 13, Rectangular Spring 3 is fixed together with fixing the first spring base 1.Square
Second end free state of shape spring is without bending, and Rectangular Spring inner circle coordinates with the crest clearance of second spring seat 2.
In order to limit the first spring base 1, axially activity, the endoporus of first spring base are provided with position limiting convex ring 14, such as Fig. 7
Shown, the mandrel 4 is provided with coordinates the first spring base 1 of limitation to the limited step of axially the second end activity with position limiting convex ring 14
41, to be formed to the spacing of the second end of the first spring base axial direction.Axially the second end of mandrel 4 is provided with the convex that outside boss goes out
Edge 42, axial limiting is carried out to spring damping mechanism first end.Meanwhile the axial first end of mandrel is provided with end cap 9, in end cap
Hole is provided with the bending part 91 to axially the second side bending, bending part 91 and outside diameter of mandrel's close-fitting installation, by end cap 9 to the first bullet
The axial first end progress of spring abutment is spacing, while also carries out axial limiting to the axial first end of spring damping mechanism.
As shown in Fig. 2 the endoporus of first spring base 1 is provided with the annular groove 12 for placing jump ring.As shown in figure 8, the card
The opening both ends of spring are provided with outward bending section 51, and first spring base is provided with the jump ring for entering bending section engaging
Groove.Jump ring internal diameter is interference fit with mandrel, and the opening of bending section 51 is identical with the jump ring angle of the v-groove on the first spring base, is easy to jump ring
Load during assembling.
Wherein, in terms of material selection, mandrel 4 uses powdered metallurgical material die cast, and the first spring base 1 uses PA66
Material injection is molded, and second spring seat 2 is using the shaping of PA66+GF30 mixed injection moldings, and Rectangular Spring 3 is using 65Mn square-sections material
Material, material section size 1.5mmX1.3mm, need left-handed design.Jump ring design uses 65Mn materials, and raw material structure is designed as square
Tee section, size 3.2mmX3.2mm.By the reasonable selection of material, reach the balance for reducing cost He meeting requirement.
In addition to above preferred embodiment, the present invention also has other embodiments, and those skilled in the art can be according to this
Invention is variously modified and deformed, and without departing from the spirit of the present invention, all should belong in claims of the present invention and determine
The scope of justice.
Claims (10)
1. a kind of asymmetric damping structure tension wheel shaft bearing unit, including mandrel, the sleeve that is installed on mandrel and it is installed on
Bearing on sleeve, it is characterised in that：Spring damping mechanism is also equipped with the mandrel, the spring damping mechanism includes group
The first spring base, second spring seat and the Rectangular Spring being combined, the Rectangular Spring is fixed with the first spring base, described
Rectangular Spring coordinates with second spring seat for gap, and the sleeve is provided with the stopper slot circumferentially locally extended, second bullet
Axially the second end of spring abutment is provided with the positive stop lug boss of insertion stopper slot, and the circumferential lengths of the stopper slot are more than the week of positive stop lug boss
To length, the mandrel is provided with the jump ring of the first spring base axial direction first end of limitation, the axial first end installation of the mandrel
There is the end cap that axial limiting is carried out to spring damping mechanism, axially the second end of the mandrel goes out with to spring provided with outside boss
Damping mechanism carries out the locating flange of axial limiting.
A kind of 2. asymmetric damping structure tension wheel shaft bearing unit according to claim 1, it is characterised in that：Described first
Axially the second end of spring base has been evenly distributed several grabs, and the endoporus of the second spring seat is in axial first end along ring
Grab is caught in provided with card convex, the card convex.
A kind of 3. asymmetric damping structure tension wheel shaft bearing unit according to claim 2, it is characterised in that：The grab
Circumferential both sides be provided with to radially inner side protrude inner convex rib.
A kind of 4. asymmetric damping structure tension wheel shaft bearing unit according to claim 1, it is characterised in that：Described first
The endoporus of spring base is provided with position limiting convex ring, and the mandrel is provided with coordinates the first spring base of limitation to axially second with position limiting convex ring
The limited step of end activity.
A kind of 5. asymmetric damping structure tension wheel shaft bearing unit according to claim 1, it is characterised in that：The rectangle
The first end of spring is provided with bending head, and first spring base is provided with positioning hole, and the bending head penetrates positioning hole.
A kind of 6. asymmetric damping structure tension wheel shaft bearing unit according to claim 1, it is characterised in that：The rectangle
The radial outside of spring is arranged with spring protecting sleeve, and axially the first side of the spring protecting sleeve is provided with locating slot, first spring
The axial first end of seat is provided with the positioning convex for penetrating locating slot.
A kind of 7. asymmetric damping structure tension wheel shaft bearing unit according to claim 1, it is characterised in that：Described first
Spring base is provided with the annular groove for placing jump ring.
A kind of 8. asymmetric damping structure tension wheel shaft bearing unit according to claim 7, it is characterised in that：The jump ring
Endoporus and mandrel be interference fitted, the opening both ends of the jump ring are provided with outward bending section, on first spring base
Provided with the jump-ring slot for entering bending section engaging.
A kind of 9. asymmetric damping structure tension wheel shaft bearing unit according to claim 1, it is characterised in that：, the end
The endoporus of lid is provided with the bending part to axially the second side bending, and the bending part and outside diameter of mandrel's close-fitting installation.
A kind of 10. asymmetric damping structure tension wheel shaft bearing unit according to claim 1, it is characterised in that：Described
One spring base is molded using PA66 material injections, and the second spring seat uses PA66+GF30 injection moldings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710579345.0A CN107387691B (en) | 2017-07-17 | 2017-07-17 | Asymmetric damping structure tensioning wheel bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710579345.0A CN107387691B (en) | 2017-07-17 | 2017-07-17 | Asymmetric damping structure tensioning wheel bearing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107387691A true CN107387691A (en) | 2017-11-24 |
| CN107387691B CN107387691B (en) | 2023-06-09 |
Family
ID=60339309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710579345.0A Active CN107387691B (en) | 2017-07-17 | 2017-07-17 | Asymmetric damping structure tensioning wheel bearing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107387691B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684462A (en) * | 2021-07-29 | 2021-11-23 | 苏州道一至诚纳米材料技术有限公司 | Double-sided reciprocating film coating device |
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| US4822322A (en) * | 1988-07-25 | 1989-04-18 | Ina Bearing Co., Inc. | Tensioning device for timing belt or chain in automotive engine applications |
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| CN201116590Y (en) * | 2007-07-13 | 2008-09-17 | 上海振华轴承总厂 | Automatic belt tension pulley device with multiple damping |
| US20090194380A1 (en) * | 2008-01-31 | 2009-08-06 | Imtiaz Ali | Isolator with damping |
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| CN205278261U (en) * | 2015-12-31 | 2016-06-01 | 温州博立汽车科技有限公司 | Asymmetric high damping belt tensioner |
| US20160215859A1 (en) * | 2013-09-11 | 2016-07-28 | Litens Automotive Partnership | Tensioner with increased damping and arm on base cup configuration |
| US20170023108A1 (en) * | 2015-07-21 | 2017-01-26 | Muhr Und Bender Kg | Tensioning device |
| CN206943348U (en) * | 2017-07-17 | 2018-01-30 | 杭州雷迪克节能科技股份有限公司 | A kind of automatic tensioner with spring damping mechanism |
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2017
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| US4473362B1 (en) * | 1981-07-08 | 1991-07-09 | Litens Automotive Inc | |
| US4822322A (en) * | 1988-07-25 | 1989-04-18 | Ina Bearing Co., Inc. | Tensioning device for timing belt or chain in automotive engine applications |
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| CN203627696U (en) * | 2013-12-10 | 2014-06-04 | 宁波丰茂远东橡胶有限公司 | Automatic tensioning wheel |
| CN104358846A (en) * | 2014-10-20 | 2015-02-18 | 杭州诚信汽车轴承有限公司 | Drum-type asymmetric damping automatic belt tensioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684462A (en) * | 2021-07-29 | 2021-11-23 | 苏州道一至诚纳米材料技术有限公司 | Double-sided reciprocating film coating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107387691B (en) | 2023-06-09 |
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