CN210344185U - Timing belt tensioning wheel assembly - Google Patents
Timing belt tensioning wheel assembly Download PDFInfo
- Publication number
- CN210344185U CN210344185U CN201920483264.5U CN201920483264U CN210344185U CN 210344185 U CN210344185 U CN 210344185U CN 201920483264 U CN201920483264 U CN 201920483264U CN 210344185 U CN210344185 U CN 210344185U
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- Prior art keywords
- bearing
- mandrel
- spring
- ring
- wheel
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- Expired - Fee Related
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- 230000001681 protective effect Effects 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model discloses a timing belt tensioning wheel assembly, which comprises a wheel mandrel, a bracket, a spring bearing, a spring, a bearing mandrel, a tensioning wheel, a first bearing, a second bearing and a rotary frame; the spring support is provided with an installation groove, and the spring is fixed in the installation groove; the upper end of the bearing mandrel is embedded and fixed in the first bearing, and a tension wheel is arranged on the periphery of the first bearing; a rotating frame is arranged in the wheel mandrel, a second bearing is nested on the wheel mandrel, and a bearing mandrel is arranged outside the second bearing; the hole on the bearing mandrel is an eccentric hole, and the second bearing is arranged in the eccentric hole; and the bearing mandrel and the support are both provided with perforated assembling plates. The utility model discloses a take-up pulley subassembly has optimized the design space, can make the installation of every part more stable, and compact structure reduces driven shock through the spring, can the noise abatement and improve stability and the life-span of using.
Description
Technical Field
The utility model relates to an auto-parts technical field, concretely relates to timing belt tensioning wheel subassembly.
Background
The main function of an engine timing chain is to drive the valve train of the engine, and a toothed belt is one of the common chains. The timing belt enables the engine intake and exhaust valves to be opened or closed at proper time so as to ensure that the engine cylinder can normally suck and exhaust air. The toothed belt driving mode has reliable transmission, high durability and space saving, and the whole system consists of gears, toothed belt, tensioner and other parts.
The timing tensioning wheel assembly adjusts the tensioning progress by means of the interaction force between the tensioning wheel and the chain or the belt; most of springs of a timing tension wheel assembly in the prior art are exposed outside, and a plurality of mechanical parts are needed to realize connection between a tension wheel and the springs, so that the structure is complex, and the space occupied by the whole assembly is large; the structure is loose. Therefore, at least the above technical problems need to be solved by the present patent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a timing belt tight pulley subassembly.
In order to achieve the above object, an embodiment of the present invention provides a timing belt tensioner assembly, including a wheel spindle, a bracket, a spring bearing, a spring, a bearing spindle, a tensioner, a first bearing, a second bearing, and a rotating frame;
the wheel core shaft is provided with a first mounting table and a second mounting table, the support is nested on the first mounting table, and the support is provided with a baffle; the spring support is arranged on the inner side of the baffle plate of the bracket and provided with a first mounting groove, and the spring is fixed in the first mounting groove; the lower end of the bearing mandrel is sleeved on the spring and the spring support, the upper end of the bearing mandrel is embedded and fixed in the first bearing, and the periphery of the first bearing is provided with a tension wheel;
a rotating frame is arranged in the wheel mandrel, a second bearing is nested on the wheel mandrel, and a bearing mandrel is arranged outside the second bearing; the hole on the bearing mandrel is an eccentric hole, and the second bearing is arranged in the eccentric hole; the bearing mandrel and the bracket are both provided with an assembling plate with holes;
the first bearing comprises a bearing outer ring, a bearing inner ring, steel balls, a protective frame and a protective ring, wherein the bearing inner ring is arranged inside the bearing outer ring, the protective frame is arranged between the bearing outer ring and the bearing inner ring, the steel balls are arranged on the protective frame and between the bearing outer ring and the bearing inner ring, the protective ring is arranged on the bearing outer ring, a plurality of radiating holes are formed in the protective ring, a plurality of radiating fins are arranged on the upper surface of the bearing outer ring, and a plurality of fixing grooves are formed in the outer wall of the bearing outer ring.
Preferably, the first mounting groove of the spring support is formed by two vertical plates, and the second mounting groove is arranged in the lower end of the bearing mandrel.
Preferably, the second bearing is a self-lubricating bearing.
Preferably, the outer side of the guard ring is provided with 3 flanges, the flanges are uniformly distributed at intervals of 120 degrees, and the guard ring is fixed on the bearing outer ring through the flanges.
To sum up, the utility model has the advantages of it is following:
the utility model discloses a take-up pulley subassembly has optimized the design space, can make the installation of every part more stable, and compact structure reduces driven shock through the spring, can the noise abatement and improve stability and the life-span of using.
Drawings
FIG. 1 is an assembly view of an embodiment of the present invention;
figure 2 is a schematic view of the internal structure of a tension pulley assembly according to an embodiment of the present invention;
fig. 3 is a bottom view of a tension wheel assembly according to an embodiment of the present invention;
figure 4 is a schematic view of a tensioning wheel assembly according to an embodiment of the present invention;
fig. 5 is a top view of a first bearing of the present invention;
fig. 6 is a schematic structural diagram of a first bearing of the present invention;
fig. 7 is a front view of the first bearing of the present invention.
Wherein, 1, a wheel mandrel; 2. a support; 3. a spring support; 4. a spring; 5. a bearing mandrel; 6. a tension wheel; 7. a first bearing; 8. a second bearing; 9. rotating the frame; 10. a first mounting table; 11. a second mounting table; 12. a baffle plate; 13. a first mounting groove; 14. a second mounting groove; 15. an eccentric hole; 16. assembling a plate; 17. assembling a plate; 21. a bearing outer race; 22. a bearing inner race; 23. steel balls; 24. a protection frame; 25. a guard ring; 26. heat dissipation holes; 27. a flange; 28. a heat sink; 29. and fixing the grooves.
Detailed Description
The utility model provides a timing belt take-up pulley subassembly, including wheel dabber 1, support 2, spring supporting 3, spring 4, bearing dabber 5, take-up pulley 6, primary shaft holds 7, secondary shaft holds 8 and revolves frame 9.
The wheel core shaft is provided with a first mounting table 10 and a second mounting table 11, the support is nested on the first mounting table, and the first mounting table can enable the support to be sleeved on the first mounting table, so that the size of the first mounting table is larger than that of the hole in the support, and the size of the second mounting table is slightly smaller than that of the hole in the support.
The bracket 2 is provided with a baffle 12, and the spring support is arranged on the inner side of the baffle of the bracket, so that the outer wall of the spring support is contacted with the inner wall of the baffle to form a fixing mode similar to nesting.
Spring support has first mounting groove 13, and the spring is fixed in first mounting groove 13, and first mounting groove can let the spring mounting back can not take place the skew when using for the stability of subassembly is better. Preferably, the first mounting groove of the spring support is formed by two vertical plates, the vertical plate on the outer side can be shorter than the vertical plate on the inner side, and the vertical plate is arc-shaped, so that the first mounting groove is in the shape of a circular groove, and the spring is convenient to mount.
The lower end of the bearing mandrel is sleeved on the spring and the spring support, a second mounting groove 14 can be arranged at the lower end of the bearing mandrel, the second mounting groove 15 is also an annular groove, the spring can be embedded into the second mounting groove, and the spring is arranged in the first mounting groove and the second mounting groove; so no matter the bearing dabber takes place the displacement back in vertical direction, the spring still can be in two mounting grooves, can not take place the skew, avoids the spring to reduce in long-time life back.
The upper end embedding of bearing dabber is fixed in first bearing, and the take-up pulley is installed to first bearing periphery, and the take-up pulley can the free rotation, and the take-up pulley contacts with the cingulum when using.
The inside of the wheel mandrel is provided with a rotating frame, the second bearing is nested on the wheel mandrel, and the outside of the second bearing is provided with a bearing mandrel. Namely a rotating frame, a wheel core shaft, a second bearing, a bearing core shaft, a first bearing and a tension wheel are arranged from inside to outside in sequence. The second bearing is a self-lubricating bearing.
The hole on the bearing mandrel is an eccentric hole 15, and the center of the hole is not coincident with the center of the bearing mandrel, namely the eccentric hole. The second bearing is arranged in the eccentric hole; the support is provided with a mounting plate 16 with a hole, and the bearing mandrel is provided with a mounting plate 17. The assembling plate is mainly used for inserting a pin shaft into holes of the two assembling plates during assembling, and the two holes are aligned, so that the bearing mandrel is convenient to not shake, and the tensioning wheel and the toothed belt are convenient to mount. After the toothed belt is installed, the bolt is taken out, and the bearing mandrel automatically rotates to a tensioning position under the action of the spring; when the tensioning wheel is fixed, a bolt penetrates through the rotating frame and the interior of the wheel core shaft, and then the bolt is connected with a screw hole in a device for installing the tensioning wheel assembly, so that the tensioning wheel assembly is fixed on the assembly.
The utility model discloses still optimized the structure of first bearing, because the heat production of tight pulley subassembly is higher, consequently need the better bearing of heat dispersion. The utility model discloses a bearing outer lane at first bearing circles and is provided with the fin, the even upper surface that distributes in the bearing outer lane of flaky fin, can be timely distribute away the heat that the bearing inner friction produced, prevent that the inside high temperature of bearing from leading to the inside part surface of bearing to burn and glue each other even, sting and make the bearing prematurely scrap, the fin adopts the copper product material, the heat conduction is effectual, material stability is good, difficult rust and corrosion, good heat dispersion can the effectual life who increases the bearing.
The first bearing comprises a bearing outer ring 21, a bearing inner ring 22, steel balls 23, a protective frame 24 and a protective ring 25, wherein the bearing inner ring 22 is arranged inside the bearing outer ring 21, the protective frame 24 is arranged between the bearing outer ring 21 and the bearing inner ring 22, the protective frame 24 is provided with the plurality of steel balls 23, the steel balls 23 are arranged between the bearing outer ring 1 and the bearing inner ring 22, the protective ring 25 is arranged on the bearing outer ring 21, the protective ring 25 is provided with a plurality of radiating holes 26, the upper surface of the bearing outer ring 21 is provided with a plurality of radiating fins 28, and the outer wall of the bearing outer ring 21 is provided with a plurality.
The steel balls 23 are spherical metal balls, the number of the steel balls 23 is 10, the interval between every two steel balls 23 is equal, 3 flanges 27 are arranged on the outer side of the guard ring 25, the flanges 27 are uniformly distributed at intervals of 120 degrees, the guard ring 25 is fixed on the bearing outer ring 21 through the flanges 27, the radiating fins 28 are copper sheet-shaped protrusions, the number of the radiating fins 28 is 9, the height of the radiating fins 28 is smaller than that of the bearing outer ring 21, the fixing grooves 29 are circular grooves, and the fixing grooves 29 are uniformly distributed at intervals of 90 degrees.
The bearing inner ring 22 is connected with a shaft to rotate together, the steel balls 23 are arranged between the bearing inner ring 22 and the bearing outer ring 21, the bearing inner ring 22 drives the steel balls 23 to roll, friction can be effectively reduced, the steel balls 23 are fixed between the bearing outer ring 21 and the bearing inner ring 22 through a protective frame 24, a protective ring 25 is arranged on the bearing outer ring 21, 3 flanges 27 are arranged on the outer side of the protective ring 25, the flanges 27 are uniformly distributed at intervals of 120 degrees, the protective ring 25 is fixed on the bearing outer ring 21 through the flanges 27, the protective ring is effectively fixed on the bearing outer ring, connecting gaps of the bearing inner ring and the bearing outer ring are protected, a plurality of radiating holes 26 are uniformly distributed on the protective ring 25, air inside and outside the bearing can be conducted, radiating performance is improved, a plurality of radiating fins 28 are arranged on the upper surface of the bearing outer ring 21, the radiating fins 8 are copper sheet-shaped bulges, the number, copper's fin heat conduction effect is good, and heat radiating area is big, can be quick distribute away the inside heat of bearing, guarantees the normal operating temperature of bearing, prevents that the bearing from taking place that internals from stinging and scrapping too early, increases the life of bearing, is equipped with four fixed slots 29 on the outer wall of bearing inner race 21, and four fixed slots 29 interval 90 degrees evenly distributed can be with the effectual bearing base that is fixed in of bearing on.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (3)
1. A timing belt tensioning wheel assembly is characterized in that: the device comprises a wheel mandrel, a bracket, a spring support, a spring, a bearing mandrel, a tension wheel, a first bearing, a second bearing and a rotating frame;
the wheel core shaft is provided with a first mounting table and a second mounting table, the support is nested on the first mounting table, and a baffle is arranged on the support; the spring support is arranged on the inner side of the baffle plate of the bracket, the spring support is provided with a first mounting groove, and the spring is fixed in the first mounting groove; the lower end of the bearing mandrel is sleeved on the spring and the spring support, the upper end of the bearing mandrel is embedded and fixed in the first bearing, and the periphery of the first bearing is provided with a tension wheel;
a rotating frame is arranged in the wheel mandrel, a second bearing is nested on the wheel mandrel, and a bearing mandrel is arranged outside the second bearing; the hole on the bearing mandrel is an eccentric hole, and the second bearing is arranged in the eccentric hole; the bearing mandrel and the bracket are both provided with assembling plates with holes;
the first bearing comprises a bearing outer ring, a bearing inner ring, steel balls, a protective frame and a protective ring, wherein the bearing inner ring is arranged inside the bearing outer ring, the protective frame is positioned between the bearing outer ring and the bearing inner ring, the steel balls are arranged on the protective frame and positioned between the bearing outer ring and the bearing inner ring, the protective ring is arranged on the bearing outer ring, a plurality of heat dissipation holes are formed in the protective ring, a plurality of cooling fins are arranged on the upper surface of the bearing outer ring, and a plurality of fixing grooves are formed in the outer wall of the bearing outer ring;
the first mounting groove of spring support comprises two risers, and the inside second mounting groove that is provided with of the lower extreme of bearing dabber.
2. The timing belt tensioner assembly of claim 1, wherein: the second bearing is a self-lubricating bearing.
3. The timing belt tensioner assembly of claim 1, wherein: the outer side of the guard ring is provided with 3 flanges which are uniformly distributed at intervals of 120 degrees, and the guard ring is fixed on the bearing outer ring through the flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483264.5U CN210344185U (en) | 2019-04-11 | 2019-04-11 | Timing belt tensioning wheel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483264.5U CN210344185U (en) | 2019-04-11 | 2019-04-11 | Timing belt tensioning wheel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210344185U true CN210344185U (en) | 2020-04-17 |
Family
ID=70179801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920483264.5U Expired - Fee Related CN210344185U (en) | 2019-04-11 | 2019-04-11 | Timing belt tensioning wheel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210344185U (en) |
-
2019
- 2019-04-11 CN CN201920483264.5U patent/CN210344185U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20200417 |