CN108036028B - A kind of transmission device and double-clutch speed changer of double-clutch speed changer - Google Patents

Abstract

The invention discloses a transmission device of a dual-clutch transmission and a dual-clutch transmission; in the transmission device, a driven gear of third gear-fourth gear and a driven gear of R gear are sequentially arranged on the first output shaft; The second output shaft is provided with seven-speed driven gear, five-speed driven gear, six-speed driven gear and second-speed driven gear; The double teeth of the fourth gear driven gear; the fourth gear-R gear synchronizer is arranged between the third gear-the fourth gear driven gear and the R gear driven gear; the seventh gear driven gear and the fifth gear driven gear A fifth-speed-seventh-speed synchronizer is arranged between the driven gears; a second-speed-sixth-speed synchronizer is arranged between the sixth-speed driven gear and the second-speed driven gear. The present invention obtains a transmission scheme of a nine-speed transmission by changing two gears into a double-toothed gear, and solves the problems of large space and narrow range of speed ratios in current dual-clutch transmissions.

Description

Transmission device of a dual-clutch transmission and the dual-clutch transmission

technical field

The invention relates to the technical field of automobile transmissions, in particular to a transmission device of a dual-clutch transmission and the dual-clutch transmission.

Background technique

With the development of today's automobile industry, energy saving and emission reduction have become the main direction of design, and the requirements for the design of transmissions for complete vehicles are becoming more and more stringent. Therefore, dual-clutch automatic transmissions with high efficiency and high comfort have gradually become a development trend. The drive train structure of a dual-clutch automatic transmission is an important part of the entire transmission, and it is also the first condition for subsequent hardware and software design. Therefore, the layout and structure of the transmission scheme of the dual-clutch transmission is also getting higher and higher. Within a certain space size range, improving the power and economy of the vehicle has become a development direction of the transmission.

At present, in the transmission system of most dual-clutch automatic transmissions, the 1st gear and the R gear (Reverse) are controlled by one clutch. Due to the limitation of the starting capacity of the clutch, it is difficult to increase the speed ratio of the 1st gear. Use certain restrictions.

In order to obtain better power and economy, a wider range of speed ratios and a more reasonable distribution of speed ratios have become an important development direction of transmissions.

Contents of the invention

In order to solve the above technical problems, the present invention proposes a transmission device of a dual-clutch transmission and the dual-clutch transmission.

The present invention is realized by following technical scheme:

The first aspect provides a dual-clutch transmission transmission, including a first input shaft and a second input shaft coaxially arranged, a dual clutch, a differential, a first output shaft and a second output shaft;

the first output shaft includes a first end and a second end, the second output shaft includes a third end and a fourth end;

The double clutch is fixedly connected to the first input shaft by a spline, the double clutch is fixed to the second input shaft by a spline, and the double clutch transmits power to the first input shaft and the second input shaft respectively; The ring gear of the differential is in constant mesh with the gears on the first output shaft and the second output shaft;

On the first output shaft, from the first end to the second end, there are three-speed-four-speed driven gears and R-speed driven gears in sequence; on the second output shaft, from the third end From the bottom to the fourth end, there are seven driven gears, five driven gears, sixth driven gears and second driven gears; the third-four driven gears are the third driven gears and the double tooth formed by the fourth gear driven gear;

On the first output shaft between the third gear-fourth gear driven gear and the R gear driven gear, a fourth gear-R gear synchronizer is provided for selectively transmitting the fourth gear torque or the R gear torque for the first output shaft;

On the second output shaft between the seventh-speed driven gear and the fifth-speed driven gear, a fifth-speed-seventh synchronizer is provided for selectively transmitting the seventh-speed torque or the fifth-speed torque to the first Two output shafts;

On the second output shaft between the sixth-speed driven gear and the second-speed driven gear, a second-speed-sixth-speed synchronizer is provided for selectively transmitting the sixth-speed torque or the second-speed torque to the first Two output shafts.

Further, there are a first pair of gears and a second pair of gears on the first input shaft; the first pair of gears is constantly meshed with the seventh-speed driven gear; the second pair of gears and the fifth-speed driven gear, third gear Gears - The third gear of the fourth gear driven gears is in constant mesh.

Further, there are a third pair of gears and a fourth pair of gears on the second input shaft; the third pair of gears and the sixth-speed driven gear, and the fourth-speed driven gear in the third-speed-fourth driven gear are often meshing; the fourth pair of gears is constantly meshing with the second gear driven gear.

Further, the second gear driven gear is in constant mesh with the R gear driven gear.

Further, the fourth gear-R gear synchronizer is fixedly connected with the first output shaft through splines; the fifth gear-seventh gear synchronizer is fixedly connected with the second output shaft through splines; the second gear-sixth gear The synchronizer is fixedly connected with the second output shaft through splines.

Further, the second input shaft is a hollow shaft, and the second input shaft is sleeved on the first input shaft through a bearing.

Further, a parking ratchet is also included, and the parking ratchet is arranged on the first output shaft between the third-speed-fourth driven gear and the first end.

The second aspect provides a dual-clutch transmission, which includes a transmission housing and the above-mentioned transmission device.

The third gear-fourth gear driven gear of the present invention is a double gear formed by the third gear driven gear and the fourth gear driven gear; by changing the two gears into a double-toothed gear, the transmission scheme of the nine-speed transmission is obtained; The problem of large space and narrow speed ratio range of the current dual-clutch transmission is solved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic diagram of a dual-clutch transmission transmission provided by the present invention.

Among the figure: 100--first input shaft; 200--second input shaft; 300--first output shaft; 301--parking ratchet; 302--third gear-fourth gear driven gear; 303--four Gear-R gear synchronizer; 304--R gear driven gear; 400--second output shaft; 401--seventh gear driven gear; 402--fifth gear-seventh gear synchronizer; 403--fifth gear slave Driven gear; 404--sixth gear driven gear; 405--second gear-sixth gear synchronizer; 406--second gear driven gear; 500--double clutch; 600--differential.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "comprising" and "having" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to expressly instead of those steps or elements listed, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Embodiment one:

This embodiment provides a transmission device for a dual-clutch transmission, which is a transmission scheme applied to an automobile dual-clutch automatic transmission. Under the condition that the layout space of the transmission scheme of a seven-speed dual-clutch transmission is exactly the same, only two gears The transmission of the nine-speed transmission can be realized by changing it into a double-toothed gear; it can solve the problems of large space and narrow speed ratio range of the current dual-clutch transmission.

Specifically, as shown in FIG. 1 , it includes a first input shaft 100 and a second input shaft 200 coaxially arranged, a dual clutch 500, a differential 600, a first output shaft 300 and a second output shaft 400; specifically, The second input shaft is a hollow shaft, and the second input shaft 200 is sleeved on the first input shaft 100 through a bearing.

The first output shaft 300 includes a first end and a second end, and the second output shaft 400 includes a third end and a fourth end;

It should be noted that, in Fig. 1, the first end is the end on the left side of the first output shaft, the second end is the end on the right side of the first output shaft; the third end is the second output shaft The end on the left side, the fourth end is the end on the right side of the second output shaft.

Further, the dual clutch 500 includes a first clutch and a second clutch, specifically, the first clutch is connected to one end of the first input shaft, the second clutch is connected to one end of the second input shaft, and the The first clutch and the second clutch are located at the same input end.

The dual clutch 500 is fixedly connected to the first input shaft 100 by a spline, and the dual clutch 500 is connected to the second input shaft 200 by a spline, and the dual clutch 500 transmits power to the first input shaft 100 respectively. and the second input shaft 200; the ring gear of the differential 600 is in constant mesh with the gears on the first output shaft 300 and the second output shaft 400;

What is important is that on the first output shaft 300, from the first end to the second end, there are three-speed-four-speed driven gear 302 and R-speed driven gear 304 in sequence; The gear-fourth gear driven gear 302 and the R gear driven gear (reverse gear driven gear) 304 are idly sleeved on the first output shaft and can rotate around the first output shaft.

On the second output shaft 400, from the third end to the fourth end, a seventh-speed driven gear 401, a fifth-speed driven gear 403, a sixth-speed driven gear 404, and a second-speed driven gear are sequentially arranged. 406; Specifically, the seventh-speed driven gear 401, the fifth-speed driven gear 403, the sixth-speed driven gear 404 and the second-speed driven gear 406 are vacantly sleeved on the second output shaft, and can be wound around the second output shaft turn.

What is important is that the third gear-fourth gear driven gear 302 is a double tooth formed by the third gear driven gear and the fourth gear driven gear;

On the first output shaft between the third gear-fourth gear driven gear 302 and the R gear driven gear 304, a fourth gear-R gear synchronizer 303 is arranged, which is used to selectively convert the fourth gear torque or R Gear torque is transmitted to the first output shaft;

On the second output shaft between the seventh-speed driven gear 401 and the fifth-speed driven gear 403, a fifth-speed-seventh-speed synchronizer 402 is provided for selectively synchronizing the seventh-speed torque or the fifth-speed torque. to the second output shaft;

On the second output shaft between the sixth-speed driven gear 404 and the second-speed driven gear 406, a second-speed-sixth-speed synchronizer 405 is provided for selectively synchronizing the sixth-speed torque or the second-speed torque. to the second output shaft.

In detail, the fourth gear-R gear synchronizer 303 is fixedly connected with the first output shaft 300 through splines; the fifth gear-seventh gear synchronizer 402 is fixedly connected with the second output shaft 400 through splines; The gear-sixth gear synchronizer 405 is fixedly connected with the second output shaft 400 through splines.

Specifically, the synchronizer is used to control whether to transmit power to the gear, that is, when the synchronizer is engaged with the gear, the gear rotates together with the synchronizer; when the synchronizer is separated from the gear, the gear does not rotate together with the synchronizer; this implementation The fourth gear-R gear synchronizer 303 in the example is used to selectively engage with the fourth gear driven gear in the third gear-fourth gear driven gear 302, or engage with the R gear driven gear 304; in this embodiment The fifth gear-seventh gear synchronizer 402 is used to selectively engage with the fifth gear driven gear 403, or engage with the seventh gear driven gear 401; the second gear-sixth gear synchronizer 405 in this embodiment is used for Selectively engage with the second gear driven gear 406, or engage with the sixth gear driven gear 404;

Further, the first pair of gears (not shown in the figure) and the second pair of gears (not shown in the figure) are arranged on the first input shaft 100; the first pair of gears and the seventh-speed driven gear 401 are usually meshing; the second pair of gears are constantly meshed with the fifth gear driven gear 403 and the third gear driven gear in the third gear-fourth gear driven gear 302. A third pair of gears (not shown) and a fourth pair of gears (not shown in the figure) are arranged on the second input shaft 200; The fourth-speed driven gear in the fourth-speed driven gear 302 is constantly meshed; the fourth pair of gears is constantly meshed with the second-speed driven gear 406 .

Specifically, the second gear driven gear 406 is in constant mesh with the R gear driven gear 304 .

Further, the transmission device further includes a parking ratchet 301, and the parking ratchet 301 is arranged on the first output shaft between the third-fourth gear driven gear 302 and the first end.

Embodiment two:

This embodiment provides a dual-clutch transmission, including a transmission housing, and also includes the above-mentioned transmission device; specifically, it includes all the components corresponding to the above-mentioned transmission device, and the transmission device is connected as a whole through a corresponding connecting piece. The device is mounted within the transmission housing.

It should be noted that the dual-clutch transmission in the present invention is based on the transmission device in Embodiment 1, and can realize various gear shift modes, specifically:

Combined with Figure 1, the corresponding nine-speed power transmission route is as follows:

During the first gear working condition, the double clutch 500 is engaged with the first input shaft 100, and the second gear-sixth gear synchronizer 405 is engaged with the second gear driven gear 406.

First gear power transmission route: input--dual clutch 500--first input shaft 100--third gear-fourth gear driven gear 302--second input shaft 200--second gear driven gear 406--second gear- Sixth gear synchronizer 405--second output shaft 400--differential 600--output

During the second gear working condition, the double clutch 500 is engaged with the second input shaft 200, and the second gear-sixth gear synchronizer 405 is engaged with the second gear driven gear 406.

Second gear power transmission route: input--dual clutch 500--second input shaft 200--second gear driven gear 406--second gear-sixth gear synchronizer 405--second output shaft 400--differential 600 -- output

During the third gear mode, the dual clutch 500 is engaged with the first input shaft 100, and the fourth gear-R gear synchronizer 303 is engaged with the third gear-fourth gear driven gear 302.

Third gear power transmission route: input--dual clutch 500--first input shaft 100--third gear-fourth gear driven gear 302--fourth gear-R gear synchronizer 303--first output shaft 300--difference Speed 600--output

During the fourth gear mode, the dual clutch 500 is engaged with the second input shaft 200, and the fourth gear-R gear synchronizer 303 is engaged with the third gear-fourth gear driven gear 302.

Fourth gear power transmission route: input--dual clutch 500--second input shaft 200--third gear-fourth gear driven gear 302--fourth gear-R gear synchronizer 303--first output shaft 300--difference Speed 600--output

During the fifth gear mode, the dual clutch 500 is engaged with the first input shaft 100, and the fifth gear-seventh gear synchronizer 402 is engaged with the fifth gear driven gear 403.

Fifth-speed power transmission route: input--dual clutch 500--first input shaft 100--fifth-speed driven gear 403--fifth-speed-seventh-speed synchronizer 402--second output shaft 400--differential 600 -- output

During the sixth gear mode, the dual clutch 500 is engaged with the second input shaft 200, and the second gear-sixth gear synchronizer 405 is engaged with the sixth gear driven gear 404.

Sixth gear power transmission route: input--dual clutch 500--second input shaft 200--sixth gear driven gear 404--second gear-sixth gear synchronizer 405--second output shaft 400--differential 600 -- output

During the seventh gear working condition, the double clutch 500 is engaged with the first input shaft 100, and the fifth gear-seventh gear synchronizer 402 is engaged with the seventh gear driven gear 401.

Seventh gear power transmission route: input--dual clutch 500--first input shaft 100--seventh gear driven gear 401--fifth gear-seventh gear synchronizer 402--second output shaft 400--differential 600 -- output

During the eighth gear working condition, the double clutch 500 is engaged with the second input shaft 200, and the fifth gear-seventh gear synchronizer 402 is engaged with the fifth gear driven gear 403.

Eight-speed power transmission route: input--dual clutch 500--second input shaft 200--third gear-fourth gear driven gear 302--first input shaft 100--fifth gear driven gear 403--fifth gear- Seventh gear synchronizer 402--second output shaft 400--differential 600--output

During the ninth gear mode, the double clutch 500 is engaged with the second input shaft 200, and the fifth gear-seventh gear synchronizer 402 is engaged with the seventh gear driven gear 401.

Nine-speed power transmission route: input--dual clutch 500--second input shaft 200--third gear-fourth gear driven gear 302--first input shaft 100--seventh gear driven gear 401--fifth gear- Seventh gear synchronizer 402--second output shaft 400--differential 600--output

In the reverse gear mode, the dual clutch 500 is engaged with the second input shaft, and the fourth gear-R gear synchronizer 303 is engaged with the R gear driven gear 304 .

Reverse gear power transmission route: input--dual clutch 500--second input shaft 200--second gear driven gear 406--R gear driven gear 304--fourth gear-R gear synchronizer 303--first output Shaft 300--differential ring gear 600--output

Based on the space of the traditional dual-clutch transmission, the present invention realizes the requirement of adding two gears by changing two gears into one double-toothed gear, which is beneficial to the transmission to obtain better power and economy, and a wider Speed ratio range and achieve a more reasonable speed ratio distribution.

In the above-mentioned embodiments of the present invention, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (8)

1. A dual-clutch transmission transmission, comprising a first input shaft (100) and a second input shaft (200) coaxially arranged, a double clutch (500), a differential (600), a first output shaft (300 ) and the second output shaft (400); The first output shaft (300) includes a first end and a second end, and the second output shaft (400) includes a third end and a fourth end; It is characterized in that the double clutch (500) is fixedly connected to the first input shaft (100) through splines, the double clutch (500) is fixedly connected to the second input shaft (200) through splines, and the double The clutch (500) transmits power to the first input shaft (100) and the second input shaft (200); the ring gear of the differential (600) is connected to the first output shaft (300) and the second output shaft ( 400) on the gear constant mesh; On the first output shaft (300), from the first end to the second end, there are three-speed-four-speed driven gears (302) and R-speed driven gears (304) in sequence; On the second output shaft (400), from the third end to the fourth end, the seventh-speed driven gear (401), the fifth-speed driven gear (403), the sixth-speed driven gear (404) and the second-speed driven gear (404) are arranged in sequence. Gear driven gear (406); described third gear-fourth gear driven gear (302) is a double tooth formed by third gear driven gear and fourth gear driven gear; On the first output shaft between described third gear-fourth gear driven gear (302) and R gear driven gear (304), fourth gear-R gear synchronizer (303) is provided for selectively The fourth gear torque or R gear torque is transmitted to the first output shaft; On the second output shaft between described seventh-speed driven gear (401) and fifth-speed driven gear (403), fifth-speed-seventh-speed synchronizer (402) is provided for selectively switching seventh-speed Torque or fifth gear torque is transmitted to the second output shaft; On the second output shaft between the described sixth gear driven gear (404) and the second gear driven gear (406), a second gear-sixth gear synchronizer (405) is provided for selectively synchronizing the sixth gear torque or second gear torque is transmitted to the second output shaft; The dual-clutch transmission can realize power transmission in nine gears including first gear to ninth gear. 2. Transmission device according to claim 1, characterized in that, There are a first pair of gears and a second pair of gears on the first input shaft (100); the first pair of gears and the seventh gear driven gear (401) are constantly meshed; the second pair of gears and the fifth gear driven The third-gear driven gear in the gear (403), third-gear-four-gear driven gear (302) is constantly meshed. 3. The transmission device according to claim 1, characterized in that, The third pair of gears and the fourth pair of gears are arranged on the second input shaft (200); the third pair of gears and the sixth gear driven gear (404), third gear-fourth gear driven gear (302) The fourth gear driven gear is in constant mesh; the fourth pair of gears is in constant mesh with the second gear driven gear (406). 4. The transmission device according to claim 1, characterized in that, the second gear driven gear (406) is in constant mesh with the R gear driven gear (304). 5. The transmission device according to claim 1, characterized in that, The fourth gear-R gear synchronizer (303) is fixedly connected with the first output shaft (300) by a spline; The fifth gear-seventh gear synchronizer (402) is fixedly connected with the second output shaft (400) through a spline; The second gear-sixth gear synchronizer (405) is fixedly connected with the second output shaft (400) through splines. 6. The transmission device according to claim 1, characterized in that, the second input shaft is a hollow shaft, and the second input shaft (200) is sleeved on the first input shaft (100) through a bearing. 7. The transmission device according to claim 1, characterized in that it further comprises a parking ratchet (301), and the parking ratchet (301) is arranged between the third gear-fourth gear driven gear (302) and the first gear. on the first output shaft between one end. 8. A dual-clutch transmission, characterized by comprising a transmission housing and the transmission device according to any one of claims 1-7.