Electronic double-clutch gear shifting transmission system

Abstract

The utility model relates to an electronic double-clutch gear-shifting transmission device which comprises a first clutch and a second clutch which are symmetrically arranged left and right, a first output shaft of the first clutch is separated from a second input shaft of the second clutch, a first input shaft and a second input shaft are respectively provided with a gear-shifting gear, the first clutch controls odd-number gears, and the second clutch controls odd-number gears. The second clutch controls even gears; the plurality of shifting forks are respectively connected with the spline gears in the gear-shifting gear; wherein a plurality of shifting forks are connected to the first gear shifting drum, and the other shifting forks are connected to the second gear shifting drum; and the first gear shifting drum and the second gear shifting drum are respectively driven by a gear shifting motor. According to the scheme, a double-clutch structure is adopted, the gear shifting motor is used for controlling gear shifting, the two clutches are used for controlling odd gears and even gears respectively, the two clutches can act synchronously during gear shifting, and gear shifting is smoother.

Description

TECHNICAL FIELD

[0001] The utility model relates to motorcycle engine system technical field especially relates to an electronic double clutch gear shifting transmission system. BACKGROUND

[0002] The conventional motorcycle engine adopts single clutch transmission mode, matches single gear shifting drum to control limited gear (6 gears and below), the gear of this mode has strong jerk feeling when switching, and the driving experience is poor, part models adopt single side combined double clutch structure, but the gear shifting transmission structure of this type has limited improvement on driving smoothness, and has high production cost, complex processing technology, low production efficiency and low finished product qualification rate. SUMMARY

[0003] In order to solve the above problems, the utility model discloses an electronic double clutch gear shifting transmission system, adopts double clutch structure, uses gear shifting motor to control gear shifting, two clutches control odd gears and even gears respectively, two clutches can act synchronously when gear shifting, and gear shifting is more smooth.

[0004] The electronic double clutch gear shifting transmission device comprises a first clutch and a second clutch arranged symmetrically left and right, a first output shaft of the first clutch and a second input shaft of the second clutch are separated from each other, a gear shifting gear is arranged on the first input shaft and the second input shaft respectively, the first clutch controls odd gear positions, and the second clutch controls even gear positions.

[0005] A plurality of forks are connected with the spline gears in the gear shifting gears respectively, wherein a plurality of forks are connected to the first gear shifting drum, and the rest of the forks are connected to the second gear shifting drum, and the first gear shifting drum and the second gear shifting drum are driven by gear shifting motors respectively.

[0006] As preferred, the output shaft of a gear shifting motor, the first gear shifting drum and the first input shaft are arranged in parallel with each other, the first gear shifting motor and the rotating shaft of the first gear shifting drum are connected through a speed reduction gear set, the output shaft of a gear shifting motor, the second gear shifting drum and the second input shaft are arranged in parallel with each other, and the second gear shifting motor and the rotating shaft of the second gear shifting drum are connected through a speed reduction gear set.

[0007] As preferred, the first input shaft and the second input shaft are arranged coaxially, and the second input shaft extends in the length direction of the first input shaft.

[0008] As preferred, a gear position sensor for detecting the current gear position is arranged between the first gear shifting drum and the second gear shifting drum.

[0009] As preferred, the first clutch and the second clutch are electric control clutches.

[0010] Because this application adopts the above-mentioned scheme, by cooperating with the first shift motor, the second shift motor and the first clutch and the second clutch, it can achieve seamless engagement and disengagement of the clutch, saving shifting time and providing smooth and reliable gear shifting. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this application;

[0012] Figure 2 This is a schematic diagram of the transmission of a geared motor.

[0013] Figure label:

[0014] First clutch 1, second clutch 2, shift motor 3, reduction gear set 4, first shift drum 5, second shift drum 6, shift fork shaft 7, shift fork 8, main shaft 6-speed gear 13, main shaft 4-speed gear 14, main shaft 8-speed gear 15, main shaft 2-speed gear 16, main shaft 7-speed gear 17, main shaft 3-speed gear 18, main shaft 5-speed gear 19, main shaft 1-speed gear 20, engine countershaft 21, countershaft 1-speed gear 22, countershaft 5-speed gear 23, countershaft 3-speed gear 24, countershaft 7-speed gear 25, countershaft 2-speed gear 26, countershaft 8-speed gear 27, countershaft 4-speed gear 28, countershaft 6-speed gear 29, countershaft output gear 30, output transition gear 31, output shaft 33, small sprocket 34, gear position sensor 35, rotor 351. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below.

[0016] like Figure 1 As shown, this embodiment provides an electronic dual-clutch transmission device, including a first clutch 1 and a second clutch 2 arranged symmetrically on the left and right. The first input shaft of the first clutch 1 and the second input shaft of the second clutch 2 are separated from each other, that is, the traditional clutch main shaft is divided into two independent parts, which are controlled by the first clutch 1 and the second clutch 2 respectively.

[0017] The first input shaft and the second input shaft are respectively provided with gear shifting gears, the first clutch 1 controls odd gears, and the second clutch 2 controls even gears. In a specific embodiment, the electronic double-clutch gear shifting transmission device can realize 6-gear shifting, and the first clutch 1 controls gears 1, 3 and 5, and the second clutch 2 controls gears 2, 4 and 6. Similarly, when the electronic double-clutch gear shifting transmission device realizes 8-gear shifting, the first clutch 1 controls gears 1, 3, 5 and 7, and the second clutch 2 controls gears 2, 4, 6 and 8. The control of the clutches on the above gears is realized by providing the corresponding gear shifting gears on the input shaft (main shaft) of the corresponding clutch. Simply speaking, the gear shifting gear includes a free gear and a spline gear. The free gear can rotate freely relative to the input shaft, and the free gear cannot directly transmit rotation to the input shaft. The spline gear can directly transmit power to the input shaft, and the spline gear can slide left and right along the input shaft in the axial direction. After the spline gear is connected with the free gear, the power can be output according to the transmission ratio of the free gear, and gear shifting is realized. The embodiment further includes a countershaft, and the gear shifting gears on the first input shaft, the second input shaft and the countershaft together constitute a gear shifting gear set of the electronic double-clutch gear shifting transmission device. The specific structure and working principle of the gear shifting gear set of the embodiment are common knowledge in the art, and the difference lies in that the specific arrangement of the gear shifting gears realizes that the first clutch 1 controls odd gears and the second clutch 2 controls even gears.

[0018] In the embodiment, the first gear shifting drum 5 and the second gear shifting drum 6 are controlled by the gear shifting motor to cooperate with the first clutch 1 and the second clutch 2 to perform gear shifting. Since the first clutch 1 controls odd gears and the second clutch 2 controls even gears, during gear shifting, one clutch is separated at the same time as the other clutch is combined synchronously, so that gear shifting without gap can be realized, the gear shifting gap is shorter, the gears are smoother, and the riding comfort can be improved. The gear position sensor 35 for detecting the current gear position is arranged between the first gear shifting drum 5 and the second gear shifting drum 6. In a specific embodiment, the gear position sensor 35 includes a rotor 351 and a housing. The rotor 351 contains a magnet and is installed on the rotating shaft of the gear shifting drum. The housing is installed on the gearbox housing and contains a core and a PCB inside. The housing also contains a plug connector connected with the vehicle wire harness. The gear position sensor 35 can be directly purchased from existing equipment. In the embodiment, the housing is installed between the two gear shifting drums, and the two rotors 351 are installed on the rotating shafts of the two gear shifting drums and are arranged towards the housing. The rotating angles of the rotating shafts of the two gear shifting drums are detected by the same housing, and the two gear shifting drums are detected by the same gear position sensor 35, so that the consistency of the detection results is high.

[0019] As Figure 2As shown, in this embodiment, the output shaft 33 of the first gear shifting motor 3, the first gear shifting drum 5 and the first input shaft are arranged in parallel with each other, and the first gear shifting motor is connected with the rotating shaft of the first gear shifting drum 5 through the reduction gear set 4. The output shaft 33 of the second gear shifting motor 3, the second gear shifting drum 6 and the second input shaft are arranged in parallel with each other, and the second gear shifting motor is connected with the rotating shaft of the second gear shifting drum 6 through the reduction gear set 4. The gear shifting motor 3, the gear shifting drum and the clutch input shaft are arranged as described above, which is compact in structure, and the gear shifting motor 3 transmits rotation to the rotating shaft of the gear shifting drum through the reduction gear set 4, so that power transmission is more stable. The reduction gear set 4 is arranged on the same side of the gear shifting motor 3 and the gear shifting drum, which occupies small space in the engine box and is compact in arrangement. Further, the first input shaft and the second input shaft are arranged coaxially, and the second input shaft extends in the length direction of the first input shaft. In this way, gear connection between the input shaft and the lay shaft is facilitated, and the arrangement in the box is more clear and simple, which is convenient for maintenance.

[0020] The lay shaft is provided with a lay shaft output gear 30 which rotates synchronously with the lay shaft. The lay shaft output gear 30 transmits power to the output shaft 33 through an output transition gear 31, and drives the small chain wheel 34 on the output shaft 33 to rotate, so as to realize power output.

[0021] This embodiment further illustrates an electronic double clutch gear shifting transmission device by taking 8-speed gear shifting as an example.

[0022] The first clutch 1 and the second clutch 2 in this embodiment are electric control clutches, which can better cooperate with the gear shifting motor to realize gear shifting without gap. For example, Figure 1As shown, the electronic double clutch gear shifting transmission of the embodiment includes first clutch 1 and second clutch 2 arranged on both sides, first input shaft connected with first clutch 1, second input shaft connected with second clutch 2, engine counter shaft 21 arranged on the side of input shaft and parallel with first input shaft and second input shaft, shift fork shaft 7, first gear shifting drum 5 and second gear shifting drum 6. Gear shifting gear set is arranged on first input shaft, second input shaft and engine counter shaft 21, and in this embodiment, main shaft 1st gear 20, main shaft 3rd gear 18, main shaft 5th gear 19 and main shaft 7th gear 17 are arranged on first input shaft, main shaft 2nd gear 16, main shaft 4th gear 14, main shaft 6th gear 13 and main shaft 8th gear 15 are arranged on second input shaft, and counter shaft 1st gear 22 corresponding to main shaft 1st gear 20, counter shaft 3rd gear 24 corresponding to main shaft 3rd gear 18, counter shaft 5th gear 23 corresponding to main shaft 5th gear 19, counter shaft 7th gear 25 corresponding to main shaft 7th gear 17, counter shaft 2nd gear 26 corresponding to main shaft 2nd gear 16, counter shaft 4th gear 28 corresponding to main shaft 4th gear 14, counter shaft 6th gear 29 corresponding to main shaft 6th gear 13 and counter shaft 8th gear 27 corresponding to main shaft 8th gear 15 are arranged on counter shaft. Among them, main shaft 1st gear 20, main shaft 3rd gear 18, main shaft 6th gear 13, main shaft 8th gear 15, counter shaft 5th gear 23, counter shaft 7th gear 25, counter shaft 4th gear 28 and counter shaft 2nd gear 26 are spline gears, which can rotate synchronously with the input shaft (main shaft) or counter shaft where they are arranged, and can slide axially along the shift fork.

[0023] Shift fork 8 is arranged on shift fork shaft 7, one end of shift fork 8 is connected with the channel of first gear shifting drum or second gear shifting drum, and the rotation of first gear shifting drum or second gear shifting drum drives the left and right sliding of shift fork connected therewith to change the connection state of spline gear connected with shift fork and free gear adjacent to it, so as to realize gear shifting.

[0024] After the engine is started, the rotation of two-sided first clutch 1 and second clutch 2 is driven by crankshaft transmission gear, and the clutching state of electric control clutch determines whether the rotation of first input shaft and second input shaft is driven by two-sided clutch gear. As shown in the figure, Figure 1 The left red arrow in the figure represents 1st gear power transmission path, and the right green arrow represents 2nd gear power transmission path. The following will illustrate the action process of gear shifting by combining two examples.

[0025] Example 1: In the process of initial gear position is N, up to 1, first clutch 1 is switched to the state of disengagement by external action mechanism, motorcycle ECU processes upshift signal, gives the first gear motor 31 power signal, the first gear motor 3 is driven by the first gear drum 5 to rotate the shift fork to slide to the left, the shift fork forces the transmission pin on the left side of the secondary shaft 5 speed gear 23 on the secondary shaft 1 speed gear 22, so that the secondary shaft 1 speed gear 22 can rotate synchronously with the engine secondary shaft 21, and then the first clutch 1 is closed. At this time, the engine power transmission sequence is: engine crankshaft → clutch right gear → first clutch 1 → first input shaft → main shaft 1 speed gear 20 → secondary shaft 1 speed gear 22 → engine secondary shaft 21 → secondary shaft output gear 30 → output transition gear 31 → output shaft 33 transmission gear → output shaft 33 → small chain wheel 34.

[0026] Example 2: When switching to 2, the second clutch 2 is switched to the state of disengagement by the external action mechanism, the motorcycle ECU processes the upshift signal, and gives the second gear motor 32 power signal, the second gear motor 3 drives the second gear drum 6 to rotate the shift fork to drive the main shaft 8 speed gear 15, so that the transmission pin on the left side of the main shaft 2 speed gear 16 is connected, and then the first clutch 1 is switched to the state of disengagement, the second clutch 2 is switched to the state of engagement, at this time, the engine power transmission sequence is: engine crankshaft → clutch right gear → second clutch 2 → second input shaft → main shaft 2 speed gear 16 → secondary shaft 2 speed gear 26 → engine secondary shaft 21 → secondary shaft output gear 30 → output transition gear 31 → output shaft 33 transmission gear → output shaft 33 → small chain wheel 34.

[0027] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. An electrically variable transmission having a dual clutch gear shifting system, characterized by, The first clutch and the second clutch are arranged symmetrically, a first output shaft of the first clutch is separated from a second input shaft of the second clutch, a gear shifting gear is arranged on the first input shaft and the second input shaft respectively, the first clutch controls odd-numbered gear positions, and the second clutch controls even-numbered gear positions. A plurality of shift forks are connected with the spline gears in the gear shifting gears respectively; wherein, some shift forks are connected to the first gear shifting drum, and the rest of the shift forks are connected to the second gear shifting drum; the first gear shifting drum and the second gear shifting drum are driven by gear shifting motors respectively.

2. The electronic two-clutch variable-ratio transmission system according to claim 1, characterized by, An output shaft of a gear shifting motor, the first gear shifting drum and the first input shaft are arranged in parallel, the first gear shifting motor and the rotating shaft of the first gear shifting drum are connected through a speed reduction gear set; an output shaft of a gear shifting motor, the second gear shifting drum and the second input shaft are arranged in parallel, the second gear shifting motor and the rotating shaft of the second gear shifting drum are connected through a speed reduction gear set.

3. The electronic two-clutch variable-gear-ratio transmission system according to claim 1 or 2, characterized by, The first input shaft and the second input shaft are coaxially arranged, and the second input shaft extends in the length direction of the first input shaft.

4. The electronic two-clutch variable-ratio transmission system of claim 2, wherein, A gear position sensor is arranged between the first gear shifting drum and the second gear shifting drum for detecting the current gear position.

5. The electronic twin-clutch gear-shifting transmission system according to claim 1, wherein, The first clutch and the second clutch are electrically controlled clutches.

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