CN204004245U - A kind of idle pulley - Google Patents
A kind of idle pulley Download PDFInfo
- Publication number
- CN204004245U CN204004245U CN201420402477.8U CN201420402477U CN204004245U CN 204004245 U CN204004245 U CN 204004245U CN 201420402477 U CN201420402477 U CN 201420402477U CN 204004245 U CN204004245 U CN 204004245U
- Authority
- CN
- China
- Prior art keywords
- bearing base
- dust cover
- inner race
- idle pulley
- bolt
- 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.)
- Expired - Lifetime
Links
- 239000000428 dust Substances 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 239000004519 grease Substances 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Pulleys (AREA)
Abstract
The purpose of this utility model is to propose a kind of idle pulley, and this kind of idle pulley can reduce the amplitude of fluctuation of belt on idle pulley, thereby eliminates the fricative noise by belt and associated components.Idle pulley of the present utility model comprises belt pulley, bearing base, inner race, outer race, steel ball, bolt, pad and dust cover, described inner race and bearing base interference press-fit, described belt pulley and outer race interference press-fit, described steel ball is located between inner race and outer race, and the both sides of described belt pulley are provided with rib; The central authorities of described bearing base are provided with through hole, and bearing base is provided with the toroidal cavity of a side opening at the periphery of through hole; Described dust cover is positioned over the side of bearing base, and the diameter of dust cover is greater than the diameter of toroidal cavity; Described bolt is by dust cover one side successively through the through hole of dust cover and bearing base, and described pad is stuck on the body of bolt of bolt away from dust cover one side, thereby dust cover is fixed to the side in bearing base.
Description
Technical field
The utility model relates to the idle pulley in engine timing mechanism or driving mechanism.
Background technique
Timing mechanism or the driving mechanism of motor carry out transmitting torque with belt conventionally, in transmission process, in order to ensure each function part, there are suitable belt parcel angle or other needs, usually need to change the position of belt, now, just need to there is an idle pulley to carry out this function.
The Timing Belt of motor or accessory belt, in running, are subject to motor self vibration, the inhomogeneous impact that waits of burning, the swing that can produce axially (perpendicular to belt operation plane).Traditional idle pulley is generally flat tyre wheel, and both sides do not have rib.Like this, the swing of belt just cannot be limited on idle pulley, if meet other parts in swing process, may produce noise.This kind of noise will continually produce, and makes passenger feel under the weather.Thereby the travelling comfort variation that causes vehicle.
Summary of the invention
The purpose of this utility model is to propose a kind of idle pulley, and this kind of idle pulley can reduce the amplitude of fluctuation of belt on idle pulley, thereby eliminates the fricative noise by belt and associated components.
Idle pulley of the present utility model comprises belt pulley, bearing base, inner race, outer race, steel ball, bolt, pad and dust cover, described inner race and bearing base interference press-fit, described belt pulley and outer race interference press-fit, described steel ball is located between inner race and outer race, and the both sides of described belt pulley are provided with rib; The central authorities of described bearing base are provided with through hole, and bearing base is provided with the toroidal cavity of a side opening at the periphery of through hole; Described dust cover is positioned over the side of bearing base, and the diameter of dust cover is greater than the diameter of toroidal cavity; Described bolt is by dust cover one side successively through the through hole of dust cover and bearing base, and described pad is stuck on the body of bolt of bolt away from dust cover one side, thereby dust cover is fixed to the side in bearing base.
In use, utilize bolt that idle pulley is installed on assembly department, the rib of belt pulley both sides can carry out spacing to belt, make belt can not produce swing under the restriction of both sides rib, thereby reduced near the axial runout situation of the belt this idle pulley, and then eliminated the fricative noise by belt and associated components.In addition, the set cavity of bearing base contributes to alleviate overall weight and guarantees that bearing base inside does not have casting defect, dust cover can prevent that dust etc. from entering into cavity inside, also the pressure of bolt is distributed on bearing base simultaneously, pad coordinates with bolt, can avoid dust cover, bolt and bearing base to depart from transportation and using process.
Further, described rib tilts to the outside of belt pulley, and while contacting with rib when belt skew, the rib of inclination can impose on power towards belt pulley center of belt, impels belt to reset to belt pulley center.
Further, the side of described bearing base is provided with spacer groove, and described pad is positioned at spacer groove, and the thickness of pad is less than or equal to the degree of depth of spacer groove, pad just can not be exposed to the side of bearing base like this, therefore can not affect the laminating of bearing base side and idle pulley attachment face.
Further, the both sides of described inner race, outer race are provided with annular seal ring, and described seal ring, inner race, outer race form the cavity of sealing, in described cavity, are filled with lubricating grease.The seal ring of both sides can prevent that lubricating grease from overflowing, and guarantees that bearing, in life span, does not need additionally to increase lubricating grease, reduces maintenance work.
Further, the diameter of described dust cover is less than the internal diameter of inner race, and dust cover does not contact with inner race like this, and bolt imposes on the pressure of dust cover and just can not transfer on inner race, can not cause the laterally offset of inner race.
Further, the periphery of described bearing base is provided with ring-shaped step, described inner race interference press-fits on ring-shaped step, the side of described bearing base protrudes from the side of inner race, dust cover does not contact with inner race like this, bolt imposes on the pressure of dust cover and just can not transfer on inner race, can not cause the laterally offset of inner race.
Idle pulley of the present utility model is simple in structure, convenient fixing, can effectively prevent the axial runout of belt on belt pulley, thereby has eliminated the fricative noise by belt and associated components, in the working life of having improved belt, has improved the NVH performance of automobile.
Accompanying drawing explanation
Fig. 1 is the sectional view of idle pulley of the present utility model.
Fig. 2 is the assembling schematic diagram of idle pulley of the present utility model.
Fig. 3 is the use view of idle pulley of the present utility model.
In figure, indicate: 1, belt pulley; 101, rib; 2, bearing base; 201, through hole; 202, toroidal cavity; 203, spacer groove; 204, ring-shaped step; 3, inner race; 4, outer race; 5, steel ball; 6, bolt; 7, pad; 8, dust cover; 9, seal ring; 10, belt.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and working principle etc.
Embodiment 1:
As shown in the figure, the idle pulley of the present embodiment comprises belt pulley 1, bearing base 2, inner race 3, outer race 4, steel ball 5, bolt 6, pad 7 and dust cover 8, described inner race 3 press-fits with bearing base 2 interference, described belt pulley 1 press-fits with outer race 4 interference, guarantee that idle pulley is under the load condition of belt operation, between bearing base 2 and inner race 3, and do not have and relatively rotate between belt pulley 1 and outer race 4; Described steel ball 5 is located between inner race 3 and outer race 4, and the both sides of described belt pulley 1 are provided with the rib 101 of inclination laterally; The central authorities of described bearing base 2 are provided with through hole 201, and bearing base 2 is provided with the toroidal cavity 202 of a side opening at the periphery of through hole 201; Described dust cover 8 is positioned over the side of bearing base 2, and the diameter of dust cover 8 is greater than the diameter of toroidal cavity 202; Described bolt 6 is by dust cover 8 one sides successively through the through hole 201 of dust cover 8 and bearing base 2, and described pad 7 is stuck on the body of bolt of bolt 6 away from dust cover 8 one sides, thereby dust cover 8 is fixed in the side of bearing base 2.
The side of bearing base 2 is provided with spacer groove 203, described pad 7 is positioned at spacer groove 203, the thickness of pad 7 is less than or equal to the degree of depth of spacer groove 203, and pad just can not be exposed to the side of bearing base 2 like this, therefore can not affect the laminating of bearing base 2 sides and idle pulley attachment face.
The both sides of inner race 3, outer race 4 are provided with annular seal ring 9, and described seal ring 9, inner race 3, outer race 4 form the cavity of sealing, in described cavity, are filled with lubricating grease.The seal ring 9 of both sides can prevent that lubricating grease from overflowing, and guarantees that bearing, in life span, does not need additionally to increase lubricating grease, reduces maintenance work.
The periphery of bearing base 2 is provided with ring-shaped step 204, by step, the side pressure towards dust cover 8 enters described inner race 3, thereby interference press-fits on ring-shaped step 204, the side of described bearing base 2 protrudes from the side of inner race 3, dust cover 8 does not contact with inner race 3 like this, bolt 6 imposes on the pressure of dust cover 8 and just can not transfer on inner race 3, can not cause the laterally offset of inner race 3.
Between belt and belt pulley 1, be rolling friction, in order to reduce idle pulley, in rotary course, belt produced to extra impact, require belt pulley 1 circumferencial direction less to beating of idle pulley rotation centerline, belt pulley 1 circle center's line is vertical with attachment face.
The distance width of belt pulley 1 both sides rib 101 should be slightly larger than the width of belt, to prevent after idle pulley is installed, and side block limit 101 frictions of belt and idle pulley.
In use, utilize bolt 6 that idle pulley is installed on assembly department, the rib 101 of belt pulley 1 both sides can carry out spacing to belt 10, make belt 10 can not produce swing under the restriction of both sides rib 101, thereby reduced near the axial runout situation of the belt 10 this idle pulley, and then eliminated the fricative noise by belt 10 and associated components.If belt 10 is offset once in a while and contacts with rib 101, the rib 101 of inclination can impose on 10 1 power towards belt pulley 1 center of belt, impels belt 10 to reset to belt pulley 1 center.In addition, the set toroidal cavity 202 of bearing base 2 contributes to alleviate overall weight and guarantees that bearing base 2 inside do not have casting defect, dust cover 8 can prevent that dust etc. from entering into the inside of toroidal cavity 202, also the pressure of bolt 6 is distributed on bearing base 2 simultaneously, pad 7 coordinates with bolt 6, can avoid dust cover 8, bolt 6 and bearing base 2 to depart from transportation and using process.
Claims (6)
1. an idle pulley, it is characterized in that comprising belt pulley, bearing base, inner race, outer race, steel ball, bolt, pad and dust cover, described inner race and bearing base interference press-fit, described belt pulley and outer race interference press-fit, described steel ball is located between inner race and outer race, and the both sides of described belt pulley are provided with rib; The central authorities of described bearing base are provided with through hole, and bearing base is provided with the toroidal cavity of a side opening at the periphery of through hole; Described dust cover is positioned over the side of bearing base, and the diameter of dust cover is greater than the diameter of toroidal cavity; Described bolt is by dust cover one side successively through the through hole of dust cover and bearing base, and described pad is stuck on the body of bolt of bolt away from dust cover one side, thereby dust cover is fixed to the side in bearing base.
2. idle pulley according to claim 1, is characterized in that described rib tilts to the outside of belt pulley.
3. idle pulley according to claim 1, is characterized in that the side of described bearing base is provided with spacer groove, and described pad is positioned at spacer groove, and the thickness of pad is less than or equal to the degree of depth of spacer groove.
4. idle pulley according to claim 1, is characterized in that the both sides of described inner race, outer race are provided with annular seal ring, and described seal ring, inner race, outer race form the cavity of sealing, in described cavity, are filled with lubricating grease.
5. according to the idle pulley described in claim 1 or 2 or 3 or 4, it is characterized in that the diameter of described dust cover is less than the internal diameter of inner race.
6. according to the idle pulley described in claim 1 or 2 or 3 or 4, it is characterized in that the periphery of described bearing base is provided with ring-shaped step, described inner race interference press-fits on ring-shaped step, and the side of described bearing base protrudes from the side of inner race.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402477.8U CN204004245U (en) | 2014-07-21 | 2014-07-21 | A kind of idle pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402477.8U CN204004245U (en) | 2014-07-21 | 2014-07-21 | A kind of idle pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004245U true CN204004245U (en) | 2014-12-10 |
Family
ID=52044249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420402477.8U Expired - Lifetime CN204004245U (en) | 2014-07-21 | 2014-07-21 | A kind of idle pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004245U (en) |
-
2014
- 2014-07-21 CN CN201420402477.8U patent/CN204004245U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103511571A (en) | Tension roller or tensioner for belt drive of internal combustion engine | |
| CN203560394U (en) | Crankshaft pulley assembly | |
| CN201121649Y (en) | Vehicle tapered roller hub bearing unit | |
| CN204004245U (en) | A kind of idle pulley | |
| JP2017007464A (en) | Support structure of drive shaft | |
| CN204213184U (en) | A kind of automobile hub bearing inner flange | |
| CN202579853U (en) | Tension pulley assembly with integral shaft sleeve and bearing | |
| WO2017013917A1 (en) | Bearing unit | |
| CN203979166U (en) | The bearing of a kind of bearing support and vibration and noise reducing | |
| CN203157718U (en) | Adjustable automobile transmission shaft intermediate support assembly | |
| CN202628804U (en) | High-precision bearing | |
| CN202623929U (en) | Intermediate driving shaft bearing assembly for heavy truck | |
| CN202188093U (en) | Pulley with bent axle one-way clutch used for accessory system of automobile engine | |
| CN202209374U (en) | Torsional vibration and bending vibration absorber | |
| CN204226548U (en) | A kind of crankshaft vibration damper of diesel engine assembly | |
| CN105152009A (en) | Wheel assembly and application thereof | |
| CN204998246U (en) | Rail mounted sightseeing wheel for train | |
| CN204755733U (en) | Split type automatically controlled diesel engine shock absorber | |
| JP6476836B2 (en) | Vibration absorber | |
| CN204692519U (en) | High-mechanic tension pulley | |
| CN203009589U (en) | Hub bearing assembly with measurable negative backlash | |
| CN212959634U (en) | Mining automobile PTO shock absorber | |
| CN213117176U (en) | Novel long service life's automobile bearing subassembly | |
| CN203770423U (en) | Bearing of automobile shock absorber | |
| CN203322087U (en) | Constant-speed universal joint internal spherical cage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |