CN217898741U - Transmission and vehicle - Google Patents
Transmission and vehicle Download PDFInfo
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- CN217898741U CN217898741U CN202123446589.2U CN202123446589U CN217898741U CN 217898741 U CN217898741 U CN 217898741U CN 202123446589 U CN202123446589 U CN 202123446589U CN 217898741 U CN217898741 U CN 217898741U
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- switching mechanism
- inner hub
- bearing
- switching
- hub
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Abstract
The utility model relates to a derailleur and vehicle, the derailleur includes: a housing, a planetary gear train including a first member, a second member, and a third member; a switching mechanism including a first switching mechanism and a second switching mechanism; the first and second switching mechanisms are arranged side by side in an axial direction, and the switching mechanism is supported on the first member by a bearing at an intermediate position of the first and second switching mechanisms. According to the utility model discloses a scheme, in the derailleur, switching mechanism adopts the single bearing to support the scheme, can make axial, the radial dimension of switching mechanism little from this.
Description
Technical Field
The utility model belongs to the vehicle field, concretely relates to derailleur and vehicle.
Background
The wet multi-plate clutch is widely applied to a vehicle transmission system because of stable gear shifting, smooth and soft power transmission and long service life. The automatic transmission generally realizes speed change through a plurality of clutches, brakes and planetary gear mechanisms of the planetary rows, the volume, the weight, the efficiency and the bearing capacity of the automatic transmission are directly related to the planetary gear mechanisms, certain requirements are set on the space arrangement of the wet clutches and the planetary rows, the system composition is responsible, the assembly requirement is high, the cost is high, and the manufacturing cost is related to the difficulty of the structural arrangement and the process realization of an oil supply system.
At present, the multi-gear automatic transmission in China still has few product types, unobvious product advantages, relatively lagged development and larger gap with the international advanced level, and restricts the development of vehicles and core parts in China. The high efficiency, low cost, miniaturization and high reliability of the automatic clutch and the planet row integrated mechanism are important improvement directions of the speed changer.
SUMMERY OF THE UTILITY MODEL
In order to solve above-mentioned technical problem to a certain extent at least, the utility model provides a following technical scheme:
a transmission, comprising:
a shell body, a plurality of first connecting rods and a plurality of second connecting rods,
a planetary gear train including a first member, a second member, and a third member;
a switching mechanism including a first switching mechanism and a second switching mechanism;
the first and second switching mechanisms are arranged side by side in an axial direction, each of the first and second switching mechanisms including an outer hub and an inner hub, the outer hub of the first switching mechanism being served by a portion of a case of the transmission, and the inner hub of the first switching mechanism being served by a portion of the second member; an outer hub of the second switching mechanism is served by another portion of the second member.
According to another aspect of the present invention, the first switching mechanism is a brake, and the second switching mechanism is a clutch.
According to another aspect of the present invention, the inner hub of the second switching mechanism is supported on the housing by a bearing.
According to another aspect of the utility model, the bearing is slide bearing, slide bearing with be provided with the steel bushing between the casing.
According to another aspect of the invention, the first switching mechanism is arranged in a section axially substantially coinciding with the planetary gear train.
According to another aspect of the present invention, the first switching mechanism and the second switching mechanism each include a friction plate assembly.
According to another aspect of the present invention, the switching mechanism further comprises an output shaft passing through a radially inner portion of the first member, an inner hub of the second switching mechanism and the output shaft being fixedly connected.
According to another aspect of the present invention, the inner hub of the second switching mechanism is fixedly connected to the third member.
According to another aspect of the present invention, at least one oil passage is formed in the inner hub of the second switching mechanism, and/or an oil collector is provided at an end portion of the planetary gear shaft of the planetary gear train close to the inner hub of the second switching element, for providing lubrication to the planetary gear.
Furthermore, the utility model also provides a vehicle, include according to the utility model discloses the derailleur.
Other advantages of the invention will be more readily understood after reading the detailed description of the technical solution of the invention taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 shows a cross-sectional view of the main structure of a transmission according to the present invention.
Detailed Description
It should be noted that while the drawings and the following description describe several preferred embodiments of the invention, those skilled in the art will understand that, in the absence of conflict, various features of the present application can be combined in any combination without conflict.
Fig. 1 shows a cross-sectional view of the main structure of a transmission according to the present invention.
As shown in fig. 1, the transmission according to the present invention includes a first casing 28 and a second casing 27, which cooperate to form a complete transmission casing or a part of the transmission casing, in which a planetary gear train and a switching mechanism are accommodated.
The planetary gear train comprises a sun gear and a sun gear shaft 1, a planet carrier 2 and a gear ring 4, wherein the sun gear is arranged on the sun gear shaft 1, and the sun gear shaft 1 can be integrated into a whole, such as in the form of a gear shaft, or can be manufactured separately and then fixedly connected in a manner such as spline connection. The planet carrier 2 is provided with one or more planet gears 3, the planet gears 3 engaging with the sun gear on the radially inner side and with the ring gear 4 on the radially outer side. The planetary gear 3 is rotatably supported on a planetary wheel shaft by a bearing. The planet wheel shaft is fixedly connected to the planet carrier 2.
As a specific embodiment, the sun gear shaft 1 may take the form of a hollow shaft, for example, fitted over the support shaft 13 via a bearing or the like. The support shaft 13 is rotatably supported by the second housing 27 via a bearing 14. The support shaft 13 can be used as an output shaft of the transmission.
The switching mechanism includes a brake and a clutch. In fig. 1, it can be seen that a brake is arranged radially outside the ring gear in a section which axially substantially coincides with the planet gears. The brake mainly comprises a piston 15, a spring 17 and a brake friction plate assembly 19. The outer hub of the brake is here acted upon by the first housing 28 of the transmission, with part of the friction plates of the brake plate assembly 19 being engaged with the first housing 28, while the inner hub of the brake is acted upon by part of the carrier hub of the planet carrier 2, and another part of the friction plates of the brake plate assembly 19 being engaged with the inner hub of the planet carrier.
In the brake, the piston 15 is fitted with the first housing 28. When subjected to oil pressure, the piston 15 moves to the right, applying pressure to the brake pad assembly 19, causing one part of the pads in the brake pad assembly 19 to engage closely with another part of the pads, thereby effecting braking action on the connected elements. Preferably, a snap ring 21 is arranged at the axial outer side of the brake friction plate set 19 for axially limiting the brake friction plate set 19.
As a preferred embodiment, a spacer 16 is provided on the side of the piston 15 facing the spring 17, and one end of the spring 17 is supported on the spacer 16. A groove is formed on the radial inner side of the first housing 28 for accommodating the snap ring 18, and the other end of the spring 17 is limited by the snap ring 18.
Further, on the axially right side of the brake, a clutch is provided. The clutch basically includes a drive piston 25, a clutch plate assembly 22, a balance piston 23 and a spring 24 disposed between the drive piston 25 and the balance piston 23. The clutch further includes an outer hub and an inner hub; the outer hub of the clutch is served by the other part of the carrier hub which engages with one part of the set of clutch discs 22, while the inner hub 9 of the clutch is fixedly connected to the support shaft 13 by means of e.g. splines or optical shaft press-fitting, and the other part of the set of clutch discs 22 engages with the inner hub 9 of the clutch.
Through the arrangement scheme of the switching element, the inner hub and the outer hub of the switching element can be realized by one part of other parts, so that the two switching elements are reasonable in arrangement, more compact in structure, small in occupied size, simple in structure and low in assembly technical difficulty.
In the embodiment shown in fig. 1, the inner hub 9 of the clutch is fixedly connected to the ring gear 4, for example, by means of face teeth, snap rings or welding. In addition, a snap ring 20 is further provided on the axial right side of the ring gear 4, for axially limiting the ring gear 4. The inner hub 9 of the clutch is also fixedly connected to a support shaft 13.
The balance piston 23 of the clutch is supported on the inner hub 9, the spring 24 is supported on the balance piston 23, the driving piston 25 is supported by the spring 24, the driving piston 25 and the balance piston 23 form a balance cavity, and a driving cavity is formed between the driving piston 25 and the base 26. A snap ring is provided to prevent the rightward movement of the base 26.
Preferably, a steel sleeve 12 is provided between the clutch inner hub 9 and the second housing 27, the inner hub 9 being supported on the steel sleeve 12, for example by means of bearings 11, preferably plain bearings. The clutch can thus be supported on the housing by means of a single bearing, which allows the axial and radial dimensions of the clutch to be reduced.
The steel jacket 12 supports two sealing elements arranged on the steel jacket 12, and the steel elements have good wear resistance.
A bearing 5 is provided at an axial end of the sun gear shaft close to the inner hub of the clutch, the bearing 5 being disposed radially between the axial end of the sun gear shaft and the axial end of the planetary gear shaft. The bearing 5 has an inner race and an outer race.
The bearing 5 is preferably a ball bearing. The outer ring of the bearing 5 is axially limited on the planet carrier 2 through a snap ring 7, and the inner ring of the bearing 5 is arranged on the sun gear shaft 1. A bearing 8 is arranged between the inner hub 9 of the clutch and the sun gear shaft 1, a bearing 10 is arranged on the side of the inner hub 9 of the clutch, which is far away from the bearing 8, the bearing 8 has an axial limiting effect on the bearing 5, and the interference of rotating parts between the sun gear shaft 1 and the inner hub 9 of the clutch and the interference between the inner hub 9 of the clutch and the second housing 27 can also be prevented. The bearing 8 and the bearing 10 are used for supporting the clutch inner hub 9, and the inner hub 9, the sun gear shaft 1 and the second shell 27 can rotate relatively.
Further, a first oil passage 31 and a second oil passage 32 are opened on the clutch inner hub 9. For example, the second housing 27 is provided with a plurality of oil holes, and oil is supplied to the planetary gears 3, the brake disc packs 19, and the clutch disc packs 22 through, for example, the first oil holes 29 and the second oil holes 30. An oil collector 6 is provided on the pinion shaft, preferably at the end of the pinion shaft, for supplying the oil passing through the oil hole 29 to the pinion 3. Through so setting up clutch oil feeding system, reducible clutch module fuel feeding channel's oil circuit simplifies the structure, reduces the processing degree of difficulty.
Having thus described in detail various embodiments of the present invention, those skilled in the art will be able to make numerous variations and modifications, or equivalent embodiments, from the teachings herein without departing from the scope of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.
Claims (10)
1. A transmission, comprising:
a shell body, a plurality of first connecting rods and a plurality of second connecting rods,
a planetary gear train including a first member, a second member, and a third member;
a switching mechanism including a first switching mechanism and a second switching mechanism;
characterized in that the first and second switching mechanisms are arranged side by side in an axial direction, each of the first and second switching mechanisms including an outer hub and an inner hub, the outer hub of the first switching mechanism being served by a portion of a case of the transmission, and the inner hub of the first switching mechanism being served by a portion of the second member; an outer hub of the second switching mechanism is served by another portion of the second member.
2. A variator as claimed in claim 1,
the first switching mechanism is a brake, and the second switching mechanism is a clutch.
3. A variator as claimed in claim 1,
the inner hub of the second switching mechanism is supported on the housing by a bearing.
4. A variator according to claim 3,
the bearing is a sliding bearing, and a steel sleeve is arranged between the sliding bearing and the shell.
5. A transmission according to any one of claims 1 to 4,
the first switching mechanism is disposed on a section that substantially coincides with the planetary gear train in the axial direction.
6. A transmission according to any one of claims 1 to 4,
the first and second switching mechanisms each include a friction plate assembly.
7. A variator according to claim 6,
the output shaft penetrates through the radial inner part of the first component, and an inner hub of the second switching mechanism is fixedly connected with the output shaft.
8. A variator according to claim 6,
the inner hub of the second switching mechanism is fixedly connected with the third member.
9. A transmission according to any one of claims 1 to 4,
at least one oil channel is formed in the inner hub of the second switching mechanism, and/or an oil collector is arranged at the end part, close to the inner hub of the second switching mechanism, of the planetary gear shaft of the planetary gear train and used for providing lubrication for the planetary gears.
10. A vehicle characterized by comprising a transmission according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446589.2U CN217898741U (en) | 2021-12-31 | 2021-12-31 | Transmission and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446589.2U CN217898741U (en) | 2021-12-31 | 2021-12-31 | Transmission and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217898741U true CN217898741U (en) | 2022-11-25 |
Family
ID=84106493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123446589.2U Active CN217898741U (en) | 2021-12-31 | 2021-12-31 | Transmission and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217898741U (en) |
-
2021
- 2021-12-31 CN CN202123446589.2U patent/CN217898741U/en active Active
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| GR01 | Patent grant | ||
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