CN202883904U - Automatic tension wheel component - Google Patents
Automatic tension wheel component Download PDFInfo
- Publication number
- CN202883904U CN202883904U CN 201220438188 CN201220438188U CN202883904U CN 202883904 U CN202883904 U CN 202883904U CN 201220438188 CN201220438188 CN 201220438188 CN 201220438188 U CN201220438188 U CN 201220438188U CN 202883904 U CN202883904 U CN 202883904U
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- Prior art keywords
- auto
- axle sleeve
- central axle
- wheel assembly
- tensioning wheel
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Abstract
The utility model relates to an automatic tension wheel component which comprises a support plate (30), a tension wheel body (40), a center shaft sleeve (50) and a dust-proof cover (70). One end of the support plate (30) is provided with a belt wheel (10) through a shaft body. A bearing (20) is arranged between the shaft body and the belt wheel (10). A center hole (60) is arranged in an inner cavity of the tension wheel body (40). The center shaft sleeve (50) is arranged in the center hole (60). Springs (90) and anti-wear slices (80) are arranged on the circumference of the center shaft sleeve (50). A concave step (41) is additionally arranged at the bottom face of the tension wheel body (40) so that affection by deformation in body die-casting is thoroughly eliminated, contact between the automatic tension wheel and an installation face of an engine is ensured and the belt wheel and a wheel system can share the same plane.
Description
Technical field
The utility model relates to a kind of tension device, in particular to a kind of auto-tensioning wheel assembly.
Background technique
Belt pulley is widely used in the actuated by cams of motor car engine.For improving performance, require belt pulley to have non-maintaining and low noise characteristic.
Tensioning can be by realizing with fixing or self-regulated Idle wheel as the key function of belt pulley drive system.When using the fixed tensioning wheel, because the dimensional changes that the elongation of the interior belt of life span and wearing and tearing and motor fuselage and the different thermal expansion coefficient of belt produce, so that generator tension force in operation process is very unstable.
Automatic tensioner has following features:
(1) tensioner designs is compact, and its oscillation center is positioned at bearing inside, only needs less space outerpace.
(2) this automatic tensioner can substitute existing Idle wheel, because this structure only needs the immovable point of a connecting screw hole and spring one end.
(3) because automatic tensioner has been used the viscous resistance of fluid, significantly reduced high-frequency fluctuation and the belt vibration of tension force.Simultaneously, because it is not subjected to the impact of damper position and resistance sudden change, even it also can effectively control the fluctuation of belt tension when engine running.
(4) can obtain desired damping capacity by changing inner disc quantity.
(5) remarkable change does not occur with service time and using method different in damping capacity.
If tension force is excessive, drive unit is easy to produce noise and belt life shortens; If tension force is too small, belt easily skids, the generation of vibration noise, and belt be easy to wrinkling, damaged, thereby the lost of life.This shows that Idle wheel plays important effect directly perceived in the drive system of motor car engine.
For example notice of authorization number is the tension wheel structure of CN 201547194 U, it is sheathed bearing between Idle wheel shell and drive bearing, fixed central spindle is stretched into by an end of described drive bearing, the other end of described drive bearing is provided with filler opening, on the inwall of described driving sleeve and bearing, offer respectively corresponding oilhole, so that described filler opening and described bearing internal communication.This tension wheel structure simply and bearing wherein have lubricity, but the central axle sleeve of this Idle wheel can not guarantee the coplane degree of Idle wheel and belt.
The tensioning wheel assembly of CN 201795007 U for example again, this tension wheel structure had both realized the effect of Idle wheel and idle pulley, reduced again installing space, met the installation requirement in the narrow space, saved cost, have simultaneously easy for installation, dismantle simple characteristics, but can extrude aluminium bits when the lower end surface of the central axle sleeve in this tensioning wheel assembly is fitted on the body with the concordant central axle sleeve of the end face of body, be deposited on the body end face impact assembling and appearance quality.
In the structural representation of as shown in Figure 1 auto-tensioning wheel assembly of the prior art, the end face of the straight burr end 52 of the central axle sleeve 50 of Idle wheel is concordant with the end face of Idle wheel body, when being fitted on the Idle wheel body, can extrude central axle sleeve 50 the aluminium bits, be deposited on the body end face impact assembling and appearance quality.
In addition, the stressed supporting surface of central axle sleeve 50, in the situation that central axle sleeve 50 is subject to the train uneven load, the centre of support axle sleeve makes central axle sleeve 50 run-off the straights better, keeps Idle wheel and belt not coplanar.
The model utility content
For this reason, the present inventor is for the defective of above-mentioned conventional art, by the effective solution of the special proposition of the utility model.
The utility model purpose is, a kind of auto-tensioning wheel assembly is dedicated to generation, and patented power in accordance with the law.Can overcome above-mentioned deficiency of the prior art according to auto-tensioning wheel assembly of the present utility model, the application increases a concave step in the bottom surface of Idle wheel body.
For achieving the above object, the technical solution adopted in the utility model is a kind of auto-tensioning wheel assembly, and this Idle wheel comprises: support plate, Idle wheel body, central axle sleeve, dust cover.Described support plate one end is equipped with belt pulley by an axis body, and between axis body and the belt pulley bearing is installed; The inner chamber of Idle wheel body has center hole, and central axle sleeve is installed in the center hole; Spring and wear plate are installed around the central axle sleeve.The impact that brings in order thoroughly to solve body die casting distortion, the fine assurance automatic tensioner of energy contacts with engine mounting face, guarantees the problem of belt pulley and wheel train co-plane, increases a concave step in the bottom surface of Idle wheel body; Solve the aluminium bits and extrude the problem that leaks outside, increased by a step in the end of the straight burr end of central axle sleeve; In addition, in order to guarantee in the situation that central axle sleeve is subject to train uneven load F, can better the centre of support axle sleeve, not run-off the straight keeps the coplane degree of Idle wheel and belt, has increased flanged plate at straight burr end and sleeve body intersection.
Preferably, the bottom surface of Idle wheel body arranges a concave step, and concave step is positioned at central hole.
Preferably, the end of the straight burr end of described central axle sleeve arranges a step; Straight burr end and the sleeve body intersection of central axle sleeve arrange a flanged plate.
This design can solve central axle sleeve and be fitted on the body, extrudes aluminium bits problem, and former design aluminium bits all squeeze out, be deposited on the body end face, and impact assembling and appearance quality, and after improving, the aluminium bits can not be extruded; In addition, increase flanged plate in straight burr end and the sleeve body intersection of central axle sleeve, and then increased the stressed supporting surface of central axle sleeve, in the situation that central axle sleeve is subject to the train uneven load, can better the centre of support axle sleeve, not run-off the straight keeps the coplane degree of Idle wheel and belt.
Preferably, the end of the straight burr end of described central axle sleeve arranges a step; Straight burr end and the sleeve body intersection of central axle sleeve arrange a flanged plate.
Preferably, described support plate one end is equipped with belt pulley by an axis body, and between axis body and the belt pulley bearing is installed.
Preferably, spring and wear plate are installed around the described central axle sleeve.
Preferably, described spring is wavy spring.
Preferably, the end face of the straight burr end of described central axle sleeve is concordant coplanar with the end face of the concave step of the bottom surface of Idle wheel body.
Preferably, the upper plane of the flanged plate on the described central axle sleeve is concordant coplanar with the upper plane in the lumen centers hole of Idle wheel body.
Preferably, the thickness of the flanged plate on the described central axle sleeve is the degree of depth of step hole on the top, lumen centers hole of Idle wheel body.
Preferably, the material of described Idle wheel body is aluminium.
Preferably, this tensioning wheel assembly has added damping mechanism.
Idle wheel is in actual use in order to keep suitable belt tension, avoid belt slippage, the wearing and tearing of compensation belt and aging after the elongation that causes, need certain moment of torsion.When tension pulley turned round, the belt of motion may evoke vibration in Idle wheel, can cause belt and Idle wheel to wear and tear too early.For this reason, Idle wheel is added damping mechanism.But more because of the parameter that affects Idle wheel moment of torsion and damping, each effect of parameters also is not quite similar, so the relation of each parts of Idle wheel and moment of torsion and damping is very complicated.Change in torque directly affects the variation of damping, and is the major influence factors of damping, and the Main Factors that affects moment of torsion is the parameter of torsion spring.Suitably reduce the torsion spring central diameter, can improve the damping value of Idle wheel.
Preferably, described bearing is four spot contact bearings.
Four spot contact bearings have characteristics.Four-point contact ball is the separable type structure, and single bearing can replace the angular contact ball bearing of positive combination or back side combination.Can bear radial load, bi-directional axial load, can limit the axial displacement of both direction, but the axial space that takies than the biserial angular contact ball ball bearing that shows specification lack.Four-point contact ball is compared with other ball bearing, and when radial internal clearance was identical, axial internal clearance was less, and limit speed is higher.Four-point contact ball is applicable to bear pure axial load or take axial load as main axial, united load.Owing to being two half inner rings (or outer ring), dress nodule number amount increases, and has larger bearing capacity.
Under normal operative condition, when this class bearing bears the axial load of any direction, can both form a wrapping angle, steel ball and inside and outside raceway respectively are contacted with a bit, avoid the contact area that large sliding friction occurs.Therefore, bearing should not bear with radial force as the load of advocating peace.
Description of drawings
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in detail, wherein:
Figure 1 shows that the structural representation of auto-tensioning wheel assembly of the prior art;
Figure 2 shows that the structural representation according to a preferred embodiment of auto-tensioning wheel assembly of the present utility model;
Figure 3 shows that the structural representation that the embodiment illustrated in fig. 1 middle central axle sleeve according to auto-tensioning wheel assembly of the present utility model matches with the Idle wheel body;
Figure 4 shows that the stereogram according to the central axle sleeve embodiment illustrated in fig. 1 of auto-tensioning wheel assembly of the present utility model;
Figure 5 shows that the sectional view according to the central axle sleeve embodiment illustrated in fig. 1 of auto-tensioning wheel assembly of the present utility model;
Figure 6 shows that the stereogram according to the Idle wheel body embodiment illustrated in fig. 1 of auto-tensioning wheel assembly of the present utility model;
Figure 7 shows that the sectional view according to the Idle wheel body embodiment illustrated in fig. 1 of auto-tensioning wheel assembly of the present utility model.
Figure labeling description: belt pulley 10, bearing 20, support plate 30, Idle wheel body 40, concave step 41, central axle sleeve 50, step 51, straight burr end 52, flanged plate 53, sleeve body 54, center hole 60, dust cover 70, wear plate 80, spring 90.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model mode of execution is described in further detail.
Consult Fig. 2 and Fig. 3, it shows the structural representation according to auto-tensioning wheel assembly of the present utility model.Idle wheel comprises: support plate 30, Idle wheel body 40, central axle sleeve 50, dust cover 70.Described support plate 40 1 ends are equipped with belt pulley 10 by an axis body, and between axis body and the belt pulley 10 bearing 20 are installed; The inner chamber of Idle wheel body 40 has center hole 60, and central axle sleeve 50 is installed in the center hole 60; Spring 90 and wear plate 80 are installed around the central axle sleeve 50.The impact that brings in order thoroughly to solve body die casting distortion, the fine assurance automatic tensioner of energy contacts with engine mounting face, guarantees the problem of belt pulley and wheel train co-plane, increases a concave step 41 in the bottom surface of Idle wheel body 40; Solve the aluminium bits and extrude the problem that leaks outside, increased by a step 51 in the end of the straight burr end 52 of central axle sleeve 50; In addition, in order to guarantee in the situation that central axle sleeve 50 is subject to train uneven load F, can better centre of support axle sleeve 50, not run-off the straight keeps the coplane degree of Idle wheel and belt, has increased flanged plate 53 at straight burr end 52 and sleeve body 54 intersections.
Described bearing 20 is four spot contact bearings.Four spot contact bearings have characteristics.Four-point contact ball is the separable type structure, and single bearing can replace the angular contact ball bearing of positive combination or back side combination.Can bear radial load, bi-directional axial load, can limit the axial displacement of both direction, but the axial space that takies than the biserial angular contact ball ball bearing that shows specification lack.Four-point contact ball is compared with other ball bearing, and when radial internal clearance was identical, axial internal clearance was less, and limit speed is higher.Four-point contact ball is applicable to bear pure axial load or take axial load as main axial, united load.Owing to being two half inner rings (or outer ring), dress nodule number amount increases, and has larger bearing capacity.
Under normal operative condition, when this class bearing bears the axial load of any direction, can both form a wrapping angle, steel ball and inside and outside raceway respectively are contacted with a bit, avoid the contact area that large sliding friction occurs.Therefore, bearing should not bear with radial force as the load of advocating peace.
Next in conjunction with Fig. 4-shown in Figure 7, further specify the present embodiment.
The inner chamber of Idle wheel body 40 has center hole 60, and central axle sleeve 50 is installed in the center hole 60.Around the described central axle sleeve 50 spring 90 and wear plate 80 are installed.
The end face of the straight burr end 52 of central axle sleeve 50 is concordant coplanar with the end face of the concave step 41 of the bottom surface of Idle wheel body 40, and concave step 41 is positioned at center hole 60 places.Be processed with the vertical bar straight burr surface uniform of straight burr end 52.
The upper plane of the flanged plate 53 on the central axle sleeve 50 is concordant coplanar with the upper plane in the lumen centers hole of Idle wheel body 40.Flanged plate 53 near the one side of sleeve bodies 54 because will contact with the upper plane in the bottom center hole of Idle wheel body 40, therefore to pass through grinding, reduce the friction on upper plane in the bottom center hole of itself and Idle wheel body 40, and then reduced the wearing and tearing of flanged plate 53.
The thickness of the flanged plate 53 on the central axle sleeve 50 is the degree of depth of step hole on the top, lumen centers hole of Idle wheel body 40.
The material of Idle wheel body 40 is aluminium.The quality of aluminium is softer, therefore can when being installed in Idle wheel body 40, central axle sleeve 50 can be scraped the aluminium bits by straight burr end 52, the end of the straight burr end 52 of central axle sleeve 50 has increased by a step 51 in the utility model, thereby and then has avoided Idle wheel body 40 to be scraped the problem that aluminium is considered to be worth doing affects outward appearance.
In addition, the utility model has also increased Idle wheel and has added damping mechanism.
Idle wheel is in actual use in order to keep suitable belt tension, avoid belt slippage, the wearing and tearing of compensation belt and aging after the elongation that causes, need certain moment of torsion.When tension pulley turned round, the belt of motion may evoke vibration in Idle wheel, can cause belt and Idle wheel to wear and tear too early.For this reason, Idle wheel is added damping mechanism.But more because of the parameter that affects Idle wheel moment of torsion and damping, each effect of parameters also is not quite similar, so the relation of each parts of Idle wheel and moment of torsion and damping is very complicated.Change in torque directly affects the variation of damping, and is the major influence factors of damping, and the Main Factors that affects moment of torsion is the parameter of torsion spring.Suitably reduce the torsion spring central diameter, can improve the damping value of Idle wheel.
The category that it will be apparent to those skilled in the art that the technological scheme of auto-tensioning wheel assembly of the present utility model comprises the combination in any of each several part in this specification.As space is limited and in order to be to make specification simple and clear, these combinations not to be introduced one by one in detail at this, but after having seen this specification, the scope of the present utility model that the combination in any of the each several part that is made of this specification consists of is self-evident.
Claims (13)
1. auto-tensioning wheel assembly, comprise support plate (30), Idle wheel body (40), central axle sleeve (50), dust cover (70), the inner chamber of Idle wheel body (40) has center hole (60), central axle sleeve (50) is installed in the center hole (60), it is characterized in that: the bottom surface of Idle wheel body (40) arranges a concave step (41), and concave step (41) is positioned at center hole (60) and locates.
2. auto-tensioning wheel assembly as claimed in claim 1, it is characterized in that: the end of the straight burr end (52) of described central axle sleeve (50) arranges a step (51).
3. auto-tensioning wheel assembly as claimed in claim 1 is characterized in that: the straight burr end (52) of described central axle sleeve (50) arranges a flanged plate (53) with sleeve body (54) intersection.
4. auto-tensioning wheel assembly as claimed in claim 1, it is characterized in that: described support plate (30) one ends are equipped with belt pulley (10) by an axis body, and between axis body and the belt pulley (10) bearing (20) are installed.
5. auto-tensioning wheel assembly as claimed in claim 4, it is characterized in that: described bearing (20) is four spot contact bearings.
6. such as each described auto-tensioning wheel assembly among the claim 1-3, it is characterized in that: described central axle sleeve (50) is equipped with spring (90) and wear plate (80) on every side.
7. auto-tensioning wheel assembly as claimed in claim 6, it is characterized in that: described spring (90) is wavy spring.
8. auto-tensioning wheel assembly as claimed in claim 1, it is characterized in that: the end face of the straight burr end (52) of described central axle sleeve (50) is concordant coplanar with the end face of the concave step (41) of the bottom surface of Idle wheel body (40).
9. such as claim 1 or 8 described auto-tensioning wheel assemblies, it is characterized in that: the upper plane of the flanged plate (53) on the described central axle sleeve (50) is concordant coplanar with the upper plane in the lumen centers hole of Idle wheel body (40).
10. auto-tensioning wheel assembly as claimed in claim 1 is characterized in that: the thickness of the flanged plate (53) on the described central axle sleeve (50) is the degree of depth of step hole on the top, lumen centers hole of Idle wheel body (40).
11. auto-tensioning wheel assembly as claimed in claim 9 is characterized in that: the thickness of the flanged plate (53) on the described central axle sleeve (50) is the degree of depth of step hole on the top, lumen centers hole of Idle wheel body (40).
12. such as each described auto-tensioning wheel assembly among the claim 1-3, it is characterized in that: the material of described Idle wheel body (40) is aluminium.
13. auto-tensioning wheel assembly as claimed in claim 1 is characterized in that: described tensioning wheel assembly has added damping mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220438188 CN202883904U (en) | 2012-08-31 | 2012-08-31 | Automatic tension wheel component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220438188 CN202883904U (en) | 2012-08-31 | 2012-08-31 | Automatic tension wheel component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883904U true CN202883904U (en) | 2013-04-17 |
Family
ID=48075335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220438188 Expired - Fee Related CN202883904U (en) | 2012-08-31 | 2012-08-31 | Automatic tension wheel component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930766A (en) * | 2018-08-14 | 2018-12-04 | 浙江瑞德利汽车部件有限公司 | A kind of wear-resistant high-intensitive motor air-conditioning train tensioning wheel |
-
2012
- 2012-08-31 CN CN 201220438188 patent/CN202883904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930766A (en) * | 2018-08-14 | 2018-12-04 | 浙江瑞德利汽车部件有限公司 | A kind of wear-resistant high-intensitive motor air-conditioning train tensioning wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20130417 Termination date: 20190831 |