阅读说明：本技术 一种用于手动挡车辆的串联式线控离合器系统 (Tandem type drive-by-wire clutch system for manual transmission vehicle ) 是由 沈建州 郑奎 田光兆 朱双双 于 2021-07-09 设计创作，主要内容包括：本发明涉及车辆智能驾驶辅助技术领域,尤其是一种用于手动挡车辆的串联式线控离合器系统,包括离合踏板、离合总泵、线控离合装置、压力传感器、离合分泵、离合机构、踏板位置传感器以及控制器,离合踏板和离合总泵机械连接,控制器与线控离合装置上的电机电气连接,控制器与踏板位置传感器电气连接,控制器与压力传感器电气连接,在车辆正常行驶时,驾驶员通过档位和离合进行配合操作,当需要主动制动时可以接受主动避撞系统的命令,在车辆主动制动的过程中,同时通过电机及其传动装置,能主动将离合器分离,避免车辆熄火；同时无主动控制时,离合器的操作由驾驶员来完成,不相互影响。(The invention relates to the technical field of intelligent driving assistance of vehicles, in particular to a tandem type line control clutch system for a manual transmission vehicle, which comprises a clutch pedal, a clutch master cylinder, a line control clutch device, a pressure sensor, a clutch slave cylinder, a clutch mechanism, a pedal position sensor and a controller, wherein the clutch pedal is mechanically connected with the clutch master cylinder; meanwhile, when no active control is carried out, the operation of the clutch is finished by a driver, and the mutual influence is avoided.)

1. A series line-control clutch system for a manual transmission vehicle, characterized by: the clutch pedal is mechanically connected with the clutch master cylinder, the clutch master cylinder is connected with an input oil port of the line-control clutch device through a hydraulic oil pipe, the pressure sensor is connected in series between an output oil port of the line-control clutch device and the clutch slave cylinder through the hydraulic oil pipe, the clutch slave cylinder is mechanically connected with the clutch mechanism, and the clutch pedal is mechanically connected with the pedal position sensor; the controller is electrically connected with a motor on the wire control clutch device, the controller is electrically connected with the pedal position sensor, and the controller is electrically connected with the pressure sensor.

2. The series-type line-control clutch system for a manual transmission vehicle according to claim 1, characterized in that: drive-by-wire clutch includes casing, flange, separation and reunion master cylinder and power portion, flange passes through bolted connection the casing is keeping away from casing one side the separation and reunion master cylinder passes through bolted connection flange, power portion passes through bolted connection the casing, its characterized in that: the clutch master pump is characterized in that a screw transmission pair and a gear reduction mechanism are arranged in the shell, the screw transmission pair comprises a rotating part supported by a first bearing and a rod part limited by a limiting mechanism, in an initial state, the front end ball head part of the rod part extends into a ball socket of a piston in the clutch master pump, a gap is reserved between the ball head of the rod part and the ball socket, and the power part provides rotating power for the rotating part through the gear reduction mechanism.

3. The series-type line-control clutch system for a manual transmission vehicle according to claim 2, characterized in that: the rotating part adopts the nut, pole portion adopts the screw rod.

4. The series-type line-control clutch system for a manual transmission vehicle according to claim 3, characterized in that: the gear reduction mechanism comprises a large gear, an idler shaft, an idler gear and a small gear, the large gear is in interference connection with the nut, the idler shaft is supported in the shell through a second bearing, the idler gear is in interference connection with the idler shaft, the small gear is in interference connection with an output shaft of the power part, the idler gear is meshed with the large gear, and the idler gear is meshed with the small gear.

5. The series-type line-control clutch system for a manual transmission vehicle according to claim 4, characterized in that: said nut being supported within said housing by said first bearing; the side, far away from the clutch master pump, of the screw is fixedly connected with a guide disc, the guide disc is connected to the screw through a countersunk screw, and a guide pin penetrates through a circular hole reserved in the guide disc and is inserted into a circular hole formed in the shell to limit axial rotation of the screw.

6. The series-type line-control clutch system for a manual transmission vehicle according to claim 5, characterized in that: the clutch master cylinder and the power part are arranged on the same side of the shell.

7. The series-type line-control clutch system for a manual transmission vehicle according to claim 6, characterized in that: an auxiliary sealing ring and a main sealing ring are respectively arranged in the clutch master cylinder; an input port flange in threaded connection is arranged on the clutch master cylinder; a spring is arranged in the clutch master cylinder; an output oil port is formed in the rear end of the clutch master cylinder, and an input oil port is formed in the input port flange.

8. The series-type line-control clutch system for a manual transmission vehicle according to claim 7, characterized in that: the power part adopts a motor.

Technical Field

The invention relates to the technical field of intelligent driving assistance of vehicles, in particular to a series-connection type line control clutch system for a manual transmission vehicle.

Background

With the rapid development of artificial intelligence technology, the vehicle has the key technologies of automatic driving and active safety, and develops into a hot spot that new technology companies pursue to enhance the market competitiveness of enterprises and the like.

The drive-by-wire technology of the vehicle chassis becomes the key of technical application aiming at the application of the active safety or automatic driving technology, and the current drive-by-wire technology mainly focuses on three key directions of brake-by-wire, steer-by-wire and drive-by-wire, and the active safety or automatic driving field is also mainly applied to automatic transmission vehicles or new energy electric vehicles.

However, as people pay more and more attention to vehicle safety, the manual transmission vehicle also has a great demand for installing an active safety technology, such as an active collision avoidance system. The basic principle of the active collision avoidance system is that a sensor is used for identifying information of a vehicle in front of a lane and other objects which may cause forward collision, when the forward collision danger is judged, a pedestrian, a bicycle or a vehicle in front of the vehicle is warned by visual and sound signals, and when necessary, autonomous braking is applied to prevent collision or reduce the speed of the collision, so that the active safety performance of the vehicle is improved. And for automatic transmission or new energy vehicles, an active collision avoidance system is added, and only a brake-by-wire technology is needed on a vehicle chassis. For a manual gear vehicle, only the brake-by-wire is solved, and in the process of implementing active braking of the vehicle, the power output of an engine is not cut off due to the fact that a clutch is not separated, so that the vehicle is flamed out. Frequent abnormal flameout can cause certain damage to the engine and simultaneously cause a series of problems of accelerated carbon deposition increase, shortened service life of the battery and the like.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to solve the problem that the vehicle is damaged due to flameout of the vehicle under the condition of active braking of the vehicle, the invention provides a tandem type line control clutch system for a manual-stop vehicle, which comprises a clutch pedal, a clutch master cylinder, a line control clutch device, a pressure sensor, a clutch slave cylinder, a clutch mechanism, a pedal position sensor and a controller, wherein the clutch pedal is mechanically connected with the clutch master cylinder; the controller is electrically connected with a motor on the wire control clutch device, the controller is electrically connected with the pedal position sensor, and the controller is electrically connected with the pressure sensor, so that the existing problems are effectively solved.

The technical scheme adopted by the invention is as follows:

a tandem type line control clutch system for a manual transmission vehicle comprises a clutch pedal, a clutch master cylinder, a line control clutch device, a pressure sensor, a clutch slave cylinder, a clutch mechanism, a pedal position sensor and a controller, wherein the clutch pedal is mechanically connected with the clutch master cylinder; the controller is electrically connected with a motor on the wire control clutch device, the controller is electrically connected with the pedal position sensor, and the controller is electrically connected with the pressure sensor.

Specifically, drive-by-wire clutch includes casing, flange, separation and reunion master cylinder and power portion, and flange passes through bolted connection the casing is keeping away from casing one side the separation and reunion master cylinder passes through bolted connection flange, power portion passes through bolted connection the casing, its characterized in that: the clutch master pump is characterized in that a screw transmission pair and a gear reduction mechanism are arranged in the shell, the screw transmission pair comprises a rotating part supported by a first bearing and a rod part limited by a limiting mechanism, in an initial state, the front end ball head part of the rod part extends into a ball socket of a piston in the clutch master pump, a gap is reserved between the ball head of the rod part and the ball socket, and the power part provides rotating power for the rotating part through the gear reduction mechanism.

Specifically, the rotating part adopts a nut, and the rod part adopts a screw rod.

Specifically, the gear reduction mechanism comprises a large gear, an idler shaft, an idler gear and a small gear, the large gear is in interference connection with the nut, the idler shaft is supported in the shell through a second bearing, the idler gear is in interference connection with the idler shaft, the small gear is in interference connection with an output shaft of the power part, the idler gear is meshed with the large gear, and the idler gear is meshed with the small gear.

Specifically, the nut is supported within the housing by the first bearing; the side, far away from the clutch master pump, of the screw is fixedly connected with a guide disc, the guide disc is connected to the screw through a countersunk screw, and a guide pin penetrates through a circular hole reserved in the guide disc and is inserted into a circular hole formed in the shell to limit axial rotation of the screw.

Specifically, the clutch master cylinder and the power part are arranged on the same side of the shell.

Specifically, be equipped with an auxiliary seal circle and a main seal circle in the separation and reunion master cylinder respectively, be equipped with a threaded connection's input port flange on the separation and reunion master cylinder, be equipped with a spring in the separation and reunion master cylinder, the separation and reunion master cylinder rear end is equipped with an output oil port, be equipped with an input oil port on the input port flange.

Specifically, the power part adopts a motor.

The invention has the beneficial effects that: the invention provides a tandem type wire control clutch system for a manual transmission vehicle, wherein when the vehicle normally runs, a driver can carry out matching operation through gears and clutch, when active braking is needed, the driver can receive the command of an active collision avoidance system, and in the process of active braking of the vehicle, the clutch can be actively separated through a motor and a transmission device thereof, so that the vehicle is prevented from flameout; meanwhile, when no active control is carried out, the operation of the clutch is finished by a driver, and the mutual influence is avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the clutch-by-wire device of the present invention.

In the figure: 1-a shell; 2-a connecting flange; 4-a guide pin; 5-a guiding disc; 6-countersunk head screw; 7-a screw; 8-a nut; 9-a first bearing; 10-a bull gear; 11-an idler shaft; 12-a second bearing; 13-idler gear; 14-pinion gear; 15-a motor; 16-clutch master cylinder; 17-secondary sealing ring; 18-a piston; 19-an input port flange; 20-a primary seal ring; 21-a spring; 22-oil inlet; 23-oil outlet.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a series-type wire-controlled clutch system for a manual transmission vehicle is characterized in that: the clutch pedal is mechanically connected with the clutch master cylinder, the clutch master cylinder is connected with an input oil port of the line control clutch device through a hydraulic oil pipe, the pressure sensor is connected in series between an output oil port of the line control clutch device and the clutch slave cylinder through the hydraulic oil pipe, the clutch slave cylinder is mechanically connected with the clutch mechanism, and the clutch pedal is mechanically connected with the pedal position sensor; the controller is electrically connected with a motor on the wire control clutch device, the controller is electrically connected with the pedal position sensor, and the controller is electrically connected with the pressure sensor.

The working principle is as follows: when the system is in a manual mode, the controller controls a motor of the clutch-by-wire device to enable the whole device to be in an initial position, an input oil port and an output oil port in the clutch-by-wire device are directly communicated, a driver operates by stepping on a clutch pedal, so that a clutch master cylinder generates hydraulic pressure, the hydraulic pressure enters through the input oil port of the clutch-by-wire device, flows out of the output oil port of the clutch-by-wire device and flows through a pressure sensor, the hydraulic pressure acts on a clutch slave cylinder, so that the clutch mechanism can be separated, in the operation process, the magnitude of the hydraulic pressure is related to the depth of stepping on the clutch pedal by the driver, the greater the depth is, the greater the pressure is, the greater the magnitude of the pressure value can be detected by the pressure sensor, and the system can determine the required hydraulic pressure to enable the clutch mechanism to be completely separated through the tested pressure value.

When the system needs to carry out wire control operation on the clutch device of the vehicle, the controller controls the motor of the wire control clutch device to push the piston in the device to move, the input oil port of the wire control clutch device is blocked, the output oil port generates pressure, the piston is controlled to continuously move, the hydraulic pressure of the output port reaches a certain pressure value, and then the clutch mechanism can be completely separated.

When the drive-by-wire mode needs to be quitted, the operation command can be received to control the drive-by-wire clutch device to return to the initial position and return the clutch control right to the driver, or the pedal stroke sensor is detected, and when the clutch pedal is detected to be stepped down, the drive-by-wire clutch device is controlled to return to the initial position and return the clutch control right to the driver.

As shown in fig. 2, the clutch-by-wire apparatus includes: the clutch device comprises a shell 1, a connecting flange 2, a clutch master cylinder 16 and a motor 15, wherein the connecting flange 2 is connected with the shell 1 through a bolt, the clutch master cylinder 16 is connected with the connecting flange 2 through a bolt at one side far away from the shell 1, the motor 15 is connected with the shell 1 through a bolt, a screw rod transmission pair and a gear reduction mechanism are arranged in the shell 1, the screw rod pair comprises a nut 8 supported by a first bearing 9 and a screw rod 7 limited by a limiting mechanism, in an initial state, the ball head part at the front end of the screw rod 7 extends into a ball socket of a piston 18 of the clutch master cylinder 16, and a gap is reserved between the ball head of the screw rod 7 and the ball socket; the motor 15 supplies rotational power to the nut 8 via a gear reduction mechanism.

In a preferred embodiment, the gear reduction mechanism comprises a large gear 10, an idler shaft 11, an idler gear 13 and a small gear 14, wherein the large gear 10 is in interference connection with the nut 8, the idler shaft 11 is supported in the shell 1 through a second bearing 12, the idler gear is in interference connection with the idler shaft 11 of the large gear 13, the small gear 14 is in interference connection with an output shaft of the motor 15, the idler gear 13 is meshed with the large gear 10, and the idler gear 13 is meshed with the small gear 14.

In yet another preferred embodiment, the nut 8 is supported within the housing 1 by a first bearing 9; the screw 7 is keeping away from separation and reunion master cylinder side fixedly connected with deflector 5, and deflector 5 passes through countersunk screw 6 and connects on screw 7, and uide pin 4 passes the round hole of reserving on deflector 5, and in inserting the round hole that forms on the casing 1 for the axial of restriction screw 7 is rotatory.

Preferably, the clutch master cylinder 16 and the motor 15 are arranged on the same side of the shell 1. In the clutch-by-wire device, the input port 22 and the output port 23 are communicated with each other in the initial state, and the hydraulic oil flowing from the input port 22 can flow out from the output port 23 without any obstruction.

The working principle of the invention is as follows: the system receives the command of the active safety system, and the control device acts according to the control command, so that pressure is generated in the clutch master cylinder to break the clutch and cut off the power output of the engine, thereby avoiding flameout of the vehicle, and meanwhile, when no active control is available, the operation of the clutch is completed by a driver without mutual influence, and the system specifically comprises the following steps:

the clutch master cylinder 16 is connected with a clutch slave cylinder on the vehicle through an oil outlet 23 by an oil pipe, and when the line control clutch device receives a line control instruction, an output shaft of the motor 15 rotates to drive the nut 8 to rotate through the pinion 14, the idler gear 13 and the bull gear 10; the guide pin 4 limits the rotation of the screw 7 around the axial direction, under the action of the nut 8, the screw 7 moves towards one side close to the clutch master cylinder 16 to push the clutch master cylinder piston 18 to move forwards, the auxiliary sealing ring 17 and the main sealing ring 20 on the piston 18 move forwards along with the movement of the piston 18, when the position of the main sealing ring 20 exceeds the central position of the input port connecting flange 19, the hydraulic flow path of the input oil port 22 is blocked by the piston, along with the continuous movement of the piston 18, the hydraulic pressure in the rear end of the piston is compressed to generate pressure, and the pressure is transmitted to a clutch slave pump on a vehicle through the oil port 23, so that the clutch is separated, and flameout is avoided.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.