CN204784573U - Derailleur idler structure of reversing gear - Google Patents
Derailleur idler structure of reversing gear Download PDFInfo
- Publication number
- CN204784573U CN204784573U CN201520340914.2U CN201520340914U CN204784573U CN 204784573 U CN204784573 U CN 204784573U CN 201520340914 U CN201520340914 U CN 201520340914U CN 204784573 U CN204784573 U CN 204784573U
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- CN
- China
- Prior art keywords
- needle bearing
- gear
- idler shaft
- reverses gear
- idle pulley
- 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 - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims description 21
- 125000004122 cyclic group Chemical group 0.000 abstract 3
- 239000000314 lubricant Substances 0.000 description 6
- 238000002679 ablation Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a derailleur idler structure of reversing gear, including reversing gear idler shaft (1) and bearing (2) of suit on this idler shaft that reverses gear (1) rotationally to reach rotationally reverse gear idler (3) of suit on this bearing (2): it is equipped with the diameter of the inner circle that the diameter is greater than bearing (2), the cyclic annular boss (1 -1) that is less than the outside diameter of bearing (2) on idler shaft (1) to reverse gear, bearing (2) total two are single bearing, are located respectively the both sides of cyclic annular boss (1 -1), the side of every bearing (2) and reverse gear and have the clearance between the side of the cyclic annular boss (1 -1) on idler shaft (1). So the length of the idler shaft that reverses gear, bearing, the fitting surface between the idler that reverses gear is less. This just makes idler shaft, bearing and the processing more easily of fitting surface of idler of reversing gear of reversing gear, therefore the processing cost is lower.
Description
Technical field
The utility model relates to automotive transmission, more particularly, relates to a kind of transmission reverse gear idle pulley structure.
Background technique
See Fig. 1, a kind of transmission reverse gear idle pulley structure common in the market, comprises and reverses gear idler shaft 1 and be set in this needle bearing 2 reversed gear on idler shaft 1 rotationally, and be sleeved on the idle pulley 3 that reverses gear on this needle bearing 2 rotationally.Described needle bearing 2 is double needle bearing.As seen from Figure 1, the idle pulley structure of reversing gear of this speed changer, the length of its idler shaft 1 that reverses gear, needle bearing 2, the fitting surface between idle pulley 3 that reverses gear is longer.The precision of the fitting surface of this just require to reverse gear idler shaft 1, needle bearing 2 and the idle pulley 3 that reverses gear is all higher.Thus, difficulty of processing is comparatively large, processing cost is higher.If reversed gear, the precision of the fitting surface of idler shaft 1, needle bearing 2 and the idle pulley 3 that reverses gear is poor, just easily cause the unbalance stress between their fitting surface, the needle roller of needle bearing 2 is caused easily to be worn, reduce working life, thus cause the working life of reducing transmission reverse gear idle pulley structure.Simultaneously, because needle bearing 2 is double needle bearing, length of thread engagement between the outer surface of its bore area and the idler shaft 1 that reverses gear is longer, so that lubricant oil is not easy to enter the surface that needle bearing 2 contacts with the idler shaft 1 that reverses gear, the idle pulley 3 that reverses gear, cause needle bearing 2 to occur ablation or wearing and tearing because lacking lubricant oil for a long time, thus cause whole transmission reverse gear idle pulley structure cisco unity malfunction.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of processing than being easier to, lower-cost transmission reverse gear idle pulley structure.
For solving the problems of the technologies described above, the utility model takes following technological scheme;
A kind of transmission reverse gear idle pulley structure, comprise and reverse gear idler shaft and be set in this needle bearing reversed gear on idler shaft rotationally, and the idle pulley that reverses gear be sleeved on rotationally on this needle bearing: described in the idler shaft that reverses gear be provided with diameter and be greater than the interior circular diameter of needle bearing, be less than the annular boss of the outside diameter of needle bearing, described needle bearing has two, be single needle bearing, lay respectively at the both sides of described annular boss, between the side of described each needle bearing and the side of the annular boss on idler shaft that reverses gear, there is gap.
Preferably, the diameter of the described annular boss reversed gear on idler shaft is greater than the interior circular diameter 4 ~ 4.6mm of needle bearing, is less than the outside diameter 0.2 ~ 0.5mm of needle bearing, and the gap existed between the side of described each needle bearing and the side of the annular boss on idler shaft that reverses gear is 0.2 ~ 0.4mm.
Preferably, the diameter of the described annular boss reversed gear on idler shaft is greater than the interior circular diameter 4.3mm of needle bearing, be less than the outside diameter 0.4mm of needle bearing, the gap existed between the side of described each needle bearing and the side of the annular boss on idler shaft that reverses gear is 0.3mm.
Preferably, also comprise ring-type oil storage tank, with described annular boss corresponding section of reversing gear on idler shaft on the endoporus that described ring-type oil storage tank is positioned at the idle pulley that reverses gear, its diameter is greater than the outside diameter 1 ~ 2mm of needle bearing.
Preferably, the diameter of the ring-type oil storage tank reversed gear described on idle pulley is greater than the outside diameter 1.5mm of the needle bearing reversed gear on idler shaft 1.
Compared with prior art, the utility model comprises following beneficial effect:
Because the idler shaft that reverses gear described in the utility model is provided with the annular boss that diameter is greater than circular diameter in needle bearing, is less than the outside diameter of needle bearing, described needle bearing has two, be single needle bearing, lay respectively at the both sides of described annular boss, between the side of described each needle bearing and the side of the annular boss on idler shaft that reverses gear, there is gap.So the length of the idler shaft that reverses gear, needle bearing, the fitting surface between idle pulley that reverses gear is less.The ratio of the fitting surface of this just make to reverse gear idler shaft, needle bearing and the idle pulley that reverses gear is easier to processing, and therefore processing cost is lower.Simultaneously, because needle bearing is single needle bearing, length of thread engagement between the outer surface of its bore area and the idler shaft that reverses gear is shorter, thus lubricant oil is than the surface being easier to enter needle bearing and contacting with the idler shaft that reverses gear, the idle pulley that reverses gear, thus the problem of ablation or wearing and tearing, cisco unity malfunction appears in the needle bearing solved in the transmission reverse gear idle pulley structure of prior art because lacking lubricant oil for a long time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the transmission reverse gear idle pulley structure of prior art;
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
See Fig. 2, a kind of transmission reverse gear idle pulley structure of the present utility model, comprise and reverse gear idler shaft 1 and be set in this needle bearing 2 reversed gear on idler shaft 1 rotationally, and the idle pulley 3 that reverses gear be sleeved on rotationally on this needle bearing 2: as seen from Figure 2, the idler shaft 1 that reverses gear described in the utility model is provided with the interior circular diameter that diameter is greater than needle bearing 2, be less than the annular boss 1-1 of the outside diameter of needle bearing 2, described needle bearing 2 has two, be single needle bearing, lay respectively at the both sides of described annular boss 1-1, gap is there is between the side of described each needle bearing 2 and the side of the annular boss 1-1 on idler shaft 1 that reverses gear.Gap is there is between the side of needle bearing 2 and the side of the annular boss 1-1 on idler shaft 1 that reverses gear.So as seen from Figure 2, the length of the idler shaft 1 that reverses gear, needle bearing 2, the fitting surface between idle pulley 3 that reverses gear is less.The ratio of the fitting surface of this just make to reverse gear idler shaft 1, needle bearing 2 and the idle pulley 3 that reverses gear is easier to processing, and therefore processing cost is lower.Simultaneously, because needle bearing 2 is single needle bearing, length of thread engagement between the outer surface of its bore area and the idler shaft 1 that reverses gear is shorter, thus lubricant oil is than the surface being easier to enter needle bearing 2 and contacting with the idler shaft 1 that reverses gear, the idle pulley 3 that reverses gear, thus the problem of ablation or wearing and tearing, cisco unity malfunction appears in the needle bearing 2 solved in the transmission reverse gear idle pulley structure of prior art because lacking lubricant oil for a long time.
The diameter of the described annular boss 1-1 reversed gear on idler shaft 1 is greater than the interior circular diameter 4 ~ 4.6mm of needle bearing 2, is less than the outside diameter 0.2 ~ 0.5mm of needle bearing 2, and the gap existed between the side of described each needle bearing 2 and the side of the annular boss 1-1 on idler shaft 1 that reverses gear is 0.2 ~ 0.4mm.The idler shaft 1 that can ensure preferably like this to reverse gear is assembled by the endoporus of the idle pulley 3 that reverses gear, and limits needle bearing 2 axial position preferably.
Preferably, the diameter of the described annular boss 1-1 reversed gear on idler shaft 1 is greater than the interior circular diameter 4.3mm of needle bearing 2, be less than the outside diameter 0.4mm of needle bearing 2, the gap existed between the side of described each needle bearing 2 and the side of the annular boss 1-1 on idler shaft 1 that reverses gear is 0.3mm.The idler shaft 1 that can ensure better like this to reverse gear is assembled by the endoporus of the idle pulley 3 that reverses gear, and limits needle bearing 2 axial position better.
As seen from Figure 2, the utility model also comprises ring-type oil storage tank 3-1, and with described annular boss 1-1 corresponding section of reversing gear on idler shaft 1 on the endoporus that described ring-type oil storage tank 3-1 is positioned at the idle pulley 3 that reverses gear, its diameter is greater than the outside diameter 1 ~ 2mm of needle bearing 2.So, both the inner hole grinding amount of the idle pulley 3 that reverses gear had been decreased, also add the oil storage capacity of transmission reverse gear idle pulley structure of the present utility model, the problem of the transmission reverse gear idle pulley structure insufficient lubrication improve and roll lubrication state, solving prior art further, easily ablation.
The diameter of the described ring-type oil storage tank 3-1 reversed gear on idle pulley 3 is greater than the outside diameter 1.5mm of the needle bearing 2 reversed gear on idler shaft 1.So, just decrease the inner hole grinding amount of the idle pulley 3 that reverses gear better, add the oil storage capacity of transmission reverse gear idle pulley structure of the present utility model better, the problem of the transmission reverse gear idle pulley structure insufficient lubrication further improve and roll lubrication state, further solving prior art, easily ablation.
Claims (5)
1. a transmission reverse gear idle pulley structure, comprise the idler shaft that reverses gear (1) and be set in the needle bearing (2) on this idler shaft that reverses gear (1) rotationally, and the idle pulley that reverses gear (3) be sleeved on rotationally on this needle bearing (2), it is characterized in that: described in the idler shaft (1) that reverses gear be provided with the interior circular diameter that diameter is greater than needle bearing (2), be less than the annular boss (1-1) of the outside diameter of needle bearing (2), described needle bearing (2) has two, be single needle bearing, lay respectively at the both sides of described annular boss (1-1), gap is there is between the side of the annular boss (1-1) on the side of described each needle bearing (2) and the idler shaft that reverses gear (1).
2. transmission reverse gear idle pulley structure according to claim 1, it is characterized in that: described in the diameter of annular boss (1-1) that reverses gear on idler shaft (1) be greater than the interior circular diameter 4 ~ 4.6mm of needle bearing (2), be less than the outside diameter 0.2 ~ 0.5mm of needle bearing (2), the gap existed between the side of the annular boss (1-1) on the side of described each needle bearing (2) and the idler shaft that reverses gear (1) is 0.2 ~ 0.4mm.
3. transmission reverse gear idle pulley structure according to claim 2, it is characterized in that: described in the diameter of annular boss (1-1) that reverses gear on idler shaft (1) be greater than the interior circular diameter 4.3mm of needle bearing (2), be less than the outside diameter 0.4mm of needle bearing (2), the gap existed between the side of the annular boss (1-1) on the side of described each needle bearing (2) and the idler shaft that reverses gear (1) is 0.3mm.
4. transmission reverse gear idle pulley structure according to any one of claim 1 to 3, it is characterized in that: also comprise ring-type oil storage tank (3-1), with annular boss (1-1) corresponding section on the described idler shaft that reverses gear (1) on the endoporus that described ring-type oil storage tank (3-1) is positioned at the idle pulley that reverses gear (3), its diameter is greater than the outside diameter 1 ~ 2mm of needle bearing (2).
5. transmission reverse gear idle pulley structure according to claim 4, is characterized in that: described in the diameter of ring-type oil storage tank (3-1) that reverses gear on idle pulley (3) be greater than the outside diameter 1.5mm of the needle bearing (2) on the idler shaft that reverses gear (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340914.2U CN204784573U (en) | 2015-05-25 | 2015-05-25 | Derailleur idler structure of reversing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340914.2U CN204784573U (en) | 2015-05-25 | 2015-05-25 | Derailleur idler structure of reversing gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784573U true CN204784573U (en) | 2015-11-18 |
Family
ID=54524626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520340914.2U Expired - Fee Related CN204784573U (en) | 2015-05-25 | 2015-05-25 | Derailleur idler structure of reversing gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204784573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108474452A (en) * | 2015-12-28 | 2018-08-31 | 本田技研工业株式会社 | Planetary gear mechanism |
-
2015
- 2015-05-25 CN CN201520340914.2U patent/CN204784573U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108474452A (en) * | 2015-12-28 | 2018-08-31 | 本田技研工业株式会社 | Planetary gear mechanism |
| CN108474452B (en) * | 2015-12-28 | 2021-02-05 | 本田技研工业株式会社 | Planetary gear mechanism |
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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: 20151118 |