阅读说明：本技术 双离合变速器及车辆 (Double-clutch transmission and vehicle ) 是由 李亮 吴茂柱 匡成成 史博文 刘航 于 2019-02-28 设计创作，主要内容包括：本发明提供了一种双离合变速器及车辆,本发明的双离合变速器包括具有第一离合单元和第二离合单元的离合器,第一输入轴和第二输入轴以及第一输出轴和第二输出轴,第二输入轴空套设置于第一输入轴上,第一输入轴上连接有挡位主动齿轮,第二输入轴上设有挡位主动齿轮和集成挡位主动齿轮及第一单向同步器,两个输出轴上分别设有挡位从动齿轮和挡位同步器,集成挡位主动齿轮分别与两个输出轴上的其一挡位从动齿轮啮合连接,第二输出轴上的与集成挡位主动齿轮啮合相连的挡位从动齿轮由第二单向同步器选择性地与相邻的另一挡位从动齿轮耦合连接。本发明的双离合变速器可减少齿轮数量,降低变速器的体积和重量,能够为变速器在整车上的搭载带来便利。(The invention provides a double-clutch transmission and a vehicle, wherein the double-clutch transmission comprises a clutch with a first clutch unit and a second clutch unit, a first input shaft, a second input shaft, a first output shaft and a second output shaft, wherein the second input shaft is arranged on the first input shaft in an empty sleeve mode, a gear driving gear is connected to the first input shaft, a gear driving gear, an integrated gear driving gear and a first one-way synchronizer are arranged on the second input shaft, gear driven gears and gear synchronizers are respectively arranged on the two output shafts, the integrated gear driving gear is respectively meshed with one of the gear driven gears on the two output shafts, and the gear driven gear meshed with the integrated gear driving gear on the second output shaft is selectively coupled with the other adjacent gear driven gear by the second one-way synchronizer. The double-clutch transmission can reduce the number of gears, reduce the volume and weight of the transmission, and bring convenience for carrying the transmission on the whole vehicle.)

1. A dual clutch transmission comprising a clutch having a first clutch unit (8) and a second clutch unit (6) and connected to an external power source, a first input shaft (20) and a second input shaft (5) connected to the first clutch unit (8) and the second clutch unit (6), respectively, and a first output shaft (21) and a second output shaft (19) provided in parallel to the first input shaft (20) and the second input shaft (5), characterized in that:

the second input shaft (5) is arranged on the first input shaft (20) in an empty sleeve mode, a gear driving gear is fixedly connected to the first input shaft (20), a gear driving gear which is fixedly connected to the second input shaft (5), an integrated gear driving gear which is arranged in an empty sleeve mode, and a first one-way synchronizer (25) which forms the integrated gear driving gear and is selectively coupled with the second input shaft (5) in a coupling mode are arranged on the second input shaft (5);

and a gear driven gear and a gear synchronizer which are fixedly connected are arranged on the first output shaft (21) and the second output shaft (19) in an empty sleeve mode respectively, the integrated gear driving gear is meshed with one of the gear driven gears on the first output shaft (21) and the second output shaft (19) respectively, the gear driven gear meshed and connected with the integrated gear driving gear on the second output shaft (19) is configured to be selectively coupled and connected with the other adjacent gear driven gear through a second one-way synchronizer (15), and the other adjacent gear driven gear is meshed and connected with one of the gear driving gears on the first input shaft (20).

2. The dual clutch transmission of claim 1, wherein: the dual-clutch transmission is provided with eight forward gears, and a first gear, a sixth gear and an eighth gear of the eight forward gears are obtained by bypassing gear driving gears and gear driven gears of other gears.

3. The dual clutch transmission of claim 2, wherein: the gear driving gear comprises a fifth gear driving gear (2) and a seventh gear driving gear (1) which are fixedly connected to the first input shaft (20), and a second gear driving gear (4) which is fixedly connected to the second input shaft (5); the integrated gear driving gear is a four-gear driving gear and a six-gear driving gear (3), and the first one-way synchronizer (25) is fixedly connected to the second input shaft (5).

4. The dual clutch transmission of claim 3, wherein: the gear driven gears comprise a fourth gear driven gear (24) and a reverse gear driven gear (7) which are arranged on the first output shaft (21) in an empty way, and a second gear driven gear (12), a sixth gear driven gear (14), a fifth gear driven gear (16) and a seventh gear driven gear (18) which are arranged on the second output shaft (19) in an empty way; the two-gear driven gear (12) and the reverse gear driven gear (7) are meshed and connected, the four-gear driven gear (24) and the six-gear driven gear (14) are respectively meshed and connected with the four-six gear driving gear (3), and the second one-way synchronizer (15) is fixedly connected to the six-gear driven gear (14).

5. The dual clutch transmission of claim 4, wherein: the gear synchronizer comprises a fourth reverse gear synchronizer (23) fixedly connected to the first output shaft (21) and located between the fourth-gear driven gear (24) and the reverse-gear driven gear (7), a sixth-second gear synchronizer (13) fixedly connected to the second output shaft (19) and located between the second-gear driven gear (12) and the sixth-gear driven gear (14), and a seventh-fifth gear synchronizer (17) located between the fifth-gear driven gear (16) and the seventh-gear driven gear (18).

6. The dual clutch transmission of claim 5, wherein: the four reverse gear synchronizer (23) is configured to constitute a connection between the four-gear driven gear (24) and the reverse gear driven gear (7), respectively, and the first output shaft (21), or the four reverse gear synchronizer (23) is configured to constitute a connection between the four-gear driven gear (24) and the first output shaft (21), respectively, and a connection between the four-gear driven gear (24) and the reverse gear driven gear (7), respectively.

7. The dual clutch transmission of claim 5, wherein: the two-gear driving gear (4), the four-six-gear driving gear (3), the five-gear driving gear (2) and the seven-gear driving gear (1) are sequentially arranged from near to far according to the distance from the clutch.

8. Double-clutch transmission according to one of the claims 1 to 7, characterized in that: a first main reduction gear (22) is fixedly connected to the first output shaft (21), and a second main reduction gear (9) is fixedly connected to the second output shaft (19).

9. The dual clutch transmission of claim 8, wherein: the double-clutch transmission further comprises a differential output shaft (11) fixedly connected with a differential gear ring (10), and the differential gear ring (11) is in meshed connection with the first main reduction gear (22) and the second main reduction gear (9) respectively.

10. A vehicle, characterized in that: a dual clutch transmission as claimed in any one of claims 1 to 9 is provided on the vehicle.

Technical Field

The invention relates to the technical field of automatic transmissions, in particular to a dual-clutch transmission. The invention also relates to a vehicle provided with the dual-clutch transmission.

Background

With the development of vehicle transmission technology, as an important form in an automatic transmission, the application of a dual clutch transmission is more and more, the dual clutch transmissions in the current market mainly comprise a six-gear dual clutch transmission, a seven-gear dual clutch transmission and an eight-gear dual clutch transmission, and the variable speed intervals of the transmissions with more gears are more and more, so that better dynamic property and oil saving property can be brought.

Wherein, to eight keep off double clutch transmission, the current eight keep off double clutch transmission on the market is mostly 5 gear surfaces, and volume weight is great, and is with high costs, and also mostly adopts to borrow a certain fender that advances alone and realize reversing gear, and the reverse gear velocity ratio receives the centre-to-centre spacing restriction, and the velocity ratio is less. In addition, the synchronizer arrangement form adopted by the existing eight-gear double-clutch transmission has complex gear shifting mechanism and control unit, and indirectly causes the increase of the volume and weight of the transmission and the increase of the cost.

Disclosure of Invention

Accordingly, the present invention is directed to a method for overcoming at least one of the disadvantages of the related art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a dual clutch transmission comprises a clutch which is provided with a first clutch unit and a second clutch unit and is connected with an external power source, a first input shaft and a second input shaft which are respectively connected with the first clutch unit and the second clutch unit, and a first output shaft and a second output shaft which are arranged in parallel with the first input shaft and the second input shaft;

the second input shaft is arranged on the first input shaft in an empty sleeve manner, a gear driving gear is fixedly connected to the first input shaft, a fixedly connected gear driving gear, an integrated gear driving gear arranged in an empty sleeve manner and a first one-way synchronizer forming the integrated gear driving gear and selectively coupled with the second input shaft are arranged on the second input shaft;

the first output shaft and the second output shaft are respectively provided with a gear driven gear and a gear synchronizer which are fixedly connected, the integrated gear driving gear is respectively meshed with one of the gear driven gears on the first output shaft and the second output shaft, the gear driven gear meshed and connected with the integrated gear driving gear on the second output shaft is configured to be selectively coupled and connected with the other adjacent gear driven gear through a second one-way synchronizer, and the other adjacent gear driven gear is meshed and connected with one of the gear driving gears on the first input shaft.

Furthermore, the dual-clutch transmission has eight forward gears, and the first gear, the sixth gear and the eighth gear of the eight forward gears are obtained by bypassing the gear driving gears and the gear driven gears of other gears.

Furthermore, the gear driving gear comprises a fifth gear driving gear and a seventh gear driving gear which are fixedly connected to the first input shaft, and a second gear driving gear which is fixedly connected to the second input shaft; the integrated gear driving gear is a four-gear driving gear and a six-gear driving gear, and the first one-way synchronizer is fixedly connected to the second input shaft.

Further, the gear driven gears comprise a fourth-gear driven gear and a reverse-gear driven gear which are arranged on the first output shaft in an idle mode, and a second-gear driven gear, a sixth-gear driven gear, a fifth-gear driven gear and a seventh-gear driven gear which are arranged on the second output shaft in an idle mode; the two-gear driven gear is meshed with the reverse gear driven gear, the four-gear driven gear and the six-gear driven gear are respectively meshed with the four-six gear driving gear, and the second one-way synchronizer is fixedly connected to the six gear driven gear.

Furthermore, the gear synchronizer comprises a fourth reverse gear synchronizer fixedly connected to the first output shaft and positioned between the fourth-gear driven gear and the reverse gear driven gear, a sixth-gear synchronizer fixedly connected to the second output shaft and positioned between the second-gear driven gear and the sixth-gear driven gear, and a seventh-fifth gear synchronizer positioned between the fifth-gear driven gear and the seventh-gear driven gear.

Further, the fourth reverse synchronizer may be configured to constitute a connection between the fourth-speed driven gear and the reverse driven gear and the first output shaft, respectively, or may be configured to constitute a connection between the fourth-speed driven gear and the first output shaft and a connection between the fourth-speed driven gear and the reverse driven gear, respectively.

Furthermore, the second gear driving gear, the fourth-sixth gear driving gear, the fifth gear driving gear and the seventh gear driving gear are sequentially arranged from near to far from the clutch.

Furthermore, a first main reduction gear is fixedly connected to the first output shaft, and a second main reduction gear is fixedly connected to the second output shaft.

Furthermore, the dual-clutch transmission further comprises a differential output shaft fixedly connected with a differential gear ring, and the differential gear ring is in meshed connection with the first main reduction gear and the second main reduction gear respectively.

Compared with the prior art, the invention has the following advantages:

the double-clutch transmission is in meshed connection with the gear driven gears on the two output shafts respectively through the integrated gear driving gears and the two one-way synchronizers, and the adjacent other gear driven gear is in meshed connection with the gear driving gear on the second input shaft, so that the number of gears can be reduced, the size and the weight of the transmission can be further reduced, the cost of the transmission can be reduced, and convenience can be brought to the carrying of the transmission on a whole vehicle.

In addition, the arrangement of each gear driving gear and each gear driven gear of the dual-clutch transmission enables the transmission to have four gear surfaces as a whole, and eight forward gears and two reverse gears can be realized, so that the number of gears can be further reduced, and the size and the weight of the transmission can be reduced. Meanwhile, the driving gears and the driven gears are arranged in a matched mode, reverse gear is in a tooth winding mode, and the increase of the reverse gear speed ratio can be realized by means of a plurality of gear gears on the premise of not increasing the number of the gears. In addition, the matching mode of the three double-side synchronizers and the two single-side synchronizers also reduces the number of the synchronizers, enables the gear shifting mechanism and the control unit to be simpler, and can reduce the space occupation, the weight and the cost of the transmission

Another object of the present invention is to propose a vehicle provided with a dual clutch transmission as described above.

The vehicle of the invention can reduce the weight and the volume of the transmission, reduce the cost of the transmission and improve the reverse gear speed ratio on the basis of realizing eight-gear automatic speed change by adopting the double-clutch transmission, thereby having good practicability.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a dual clutch transmission according to a first embodiment of the present invention;

FIG. 2 is a control logic diagram of a dual clutch transmission according to a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a dual clutch transmission according to a second embodiment of the present invention;

description of reference numerals:

1-seventh gear driving gear, 2-fifth gear driving gear, 3-fourth-sixth gear driving gear, 4-second gear driving gear, 5-second input shaft, 6-second clutch unit, 7-reverse gear driven gear, 8-first clutch unit, 9-second main reduction gear, 10-differential gear ring, 11-differential output shaft, 12-second gear driven gear, 13-sixth-second gear synchronizer, 14-sixth-gear driven gear, 15-second one-way synchronizer, 16-fifth gear driven gear, 17-seventh-gear driven gear, 18-seventh-gear driven gear, 19-second output shaft, 20-first input shaft, 21-first output shaft, 22-first main reduction gear, 23-fourth-reverse gear synchronizer, 24-fourth-gear driven gear, 25-first one-way synchronizer.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.