CN215097532U - Intelligent automobile line control brake system - Google Patents
Intelligent automobile line control brake system Download PDFInfo
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- CN215097532U CN215097532U CN202121338053.6U CN202121338053U CN215097532U CN 215097532 U CN215097532 U CN 215097532U CN 202121338053 U CN202121338053 U CN 202121338053U CN 215097532 U CN215097532 U CN 215097532U
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- 229910000831 Steel Inorganic materials 0.000 description 13
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Abstract
The utility model discloses an intelligent automobile line control brake system, which comprises a mechanical part and an electric control part; the mechanical part comprises a base, a control motor, a wire spool, a pull cable, a pulley assembly, a steering pulley, a guide pulley and a brake arm; the base is arranged in the vehicle in a sliding manner along the swinging direction of the brake arm, and a driving mechanism is arranged between the vehicle and the base; the electric control system comprises a brake pedal assembly, a relay, a brake MCU and an ACU; the brake MCU is connected with the brake system, and the ACU is connected with the control motor. The system is low in cost and can realize the switching between manual acceleration and intelligent driving acceleration.
Description
Technical Field
The utility model relates to an intelligent automobile drive-by-wire braking system.
Background
The intelligent automobile mainly comprises three links of network navigation, autonomous driving and manual intervention, so that automatic driving is realized by control under most conditions, automation is required for operation of a driver on the traditional automobile, and the existing automobile needs to be improved to realize automation.
For a brake system of an automobile, the conventional way is realized by a driver stepping on a brake arm, and for an intelligent automobile, an automatic control device is required, for example, a brake pedal active control device is disclosed in patent document No. 201911078698.8, which comprises a pedal assembly, a motor assembly, a steel cable connecting the pedal assembly and the motor assembly, and a pulley assembly for changing the direction of the steel cable; the stepping motor rotates a designated angle at a designated rotating speed to drive the driving wheel to rotate, the driving wheel enables a steel cable with one end fixed on the driving wheel to start to wind along a steel cable groove, the steel cable with the other end fixed on the pedal component starts to pull the brake pedal towards the direction of the pulley component through the guiding action of the pulley component, so that the braking force is generated, when the braking force needs to be released, the motor restaurant pulls back the steel cable by the return force of the brake pedal, and the steel cable releases the winding from the driving wheel; the invention has small and compact structure, does not interfere with the brake pedal, does not influence the generation of maximum braking force, adopts the spiral single-circle steel cable to wind the driving wheel, can effectively prevent the wire control failure caused by the dead winding and clamping of the steel cable, and can realize the rapid, quick and accurate operation of the brake pedal.
Although the structure can automatically control the connection pedal assembly, the steel cable is connected to the pedal connector through the pulley, when the steel cable moves, the brake pedal swings, the position of the pedal connector is changed, the direction of the pulling force applied to the brake pedal by the steel cable is changed correspondingly, and if the direction of the pulling force applied to the brake pedal by the steel cable is not parallel to the swinging arc direction of the brake pedal, component force is generated on the brake pedal, so that the utilization efficiency of the pulling force is not high.
Disclosure of Invention
The utility model aims at providing an intelligent automobile drive-by-wire braking system utilizes the utility model discloses a system solves the problem that manual and automatic can not fine braking switch, and with low costs, improves the efficiency of braking simultaneously.
In order to achieve the aim, the intelligent automobile brake-by-wire system comprises a mechanical part and an electric control part; the mechanical part comprises a base, a control motor, a wire spool, a pull cable, a pulley assembly, a steering pulley, a guide pulley and a brake arm; the base is arranged in the vehicle in a sliding manner along the swinging direction of the brake arm, a driving mechanism is arranged between the vehicle and the base, the control motor is arranged on the base positioned on one side of the brake arm, the output end of the control motor is connected with the wire spool, the pulley assembly is arranged on the base, the steering pulley is arranged on the base, the guide pulley is arranged on the base positioned right in front of the brake arm, the axis of the pulley assembly is parallel to the axis of the wire spool, the axis of the guide pulley is vertical to the axis of the pulley assembly, and the axial direction of the steering pulley is vertical; the brake arm is hinged in the vehicle; one end of the inhaul cable is connected with the wire spool, and the other end of the inhaul cable is connected to the middle part of the brake arm through the pulley assembly, the steering pulley and the guide pulley in sequence; the electric control system comprises a brake pedal assembly, a relay, a brake MCU and an ACU; the brake pedal assembly is connected with the brake MCU through the relay, a first fixed contact of the relay is connected with the brake pedal assembly, a second fixed contact of the relay is connected with the ACU, a movable contact of the relay is connected with the brake MCU, and the first fixed contact of the relay and the movable contact of the relay are normally closed switches; the two ends of the relay are connected with a switch in parallel, the brake MCU is connected with the brake system, and the ACU is connected with the control motor.
The base is arranged in the vehicle in a sliding mode through the driving mechanism, the guide pulley is arranged, when the control motor works, the control motor drives the wire spool to rotate, the wire spool winds the inhaul cable, the inhaul cable generates pulling force on the brake arm, the brake arm swings, the driving mechanism drives the base to move in the swinging process of the brake arm, the pulling force direction of the inhaul cable acting on the brake arm is parallel to the tangential direction of the swinging arc line of the brake arm at the corresponding moment as much as possible, component force is reduced, the pulling force is used on braking to the maximum extent, and the motion direction of the base is basically perpendicular to the swinging direction of the brake arm, so that the influence of the motion of the base on braking is small.
For the electric control part, in an intelligent driving mode, an ACU (access control unit) is signaled, and the ACU directly controls and controls a motor to realize braking; meanwhile, when the ACU is electrified, the second fixed contact of the relay is communicated with the first movable contact, and thus, signals given by the CAN bus are transmitted to the brake MCU through the relay after passing through the ACU, so that braking action is realized. When manual operation is needed, the ACU is powered off, the first movable contact of the relay is communicated with the first fixed contact of the relay, and braking action is controlled through the brake pedal assembly, so that good intelligent and manual switching can be realized.
Furthermore, a coupling is mounted on an output shaft of the control motor, a driving shaft is mounted on the coupling, and the wire spool is mounted on the driving shaft. This allows better protection of the control motor.
Furthermore, spiral grooves are formed in the circumference of the wire spool from the middle of the axial direction to the two ends along the axial direction, and the spiral directions of the spiral grooves extending from the middle to the two ends are opposite. When the control motor works, the control motor drives the wire spool to rotate, the stay cable is wound in the spiral groove along the spiral groove under the action of the spiral groove, the phenomenon that the stay cable wound by each circle interferes with each other is avoided, and the slippage phenomenon is not easy to occur, so that the braking is more reliable, accurate and safe. Additionally, because the utility model discloses a wire reel adopts from the centre to both sides extension and revolve to different helicla flutes, and this structure mainly solves control motor corotation and reversal and lets the cable follow the helicla flute naturally and carry out winding technical problem.
Further, loose pulley assembly includes pulley holder, linking arm, pulley shaft, pulley bearing and pulley, and the pulley holder is installed in the car, and the linking arm pin joint is on the pulley holder, and the pulley passes through pulley shaft and pulley bearing and installs on the linking arm.
Further, the lowest point of the pulley and the lowest point of the wire spool are on the same horizontal plane.
Furthermore, the part of the stay cable entering the pulley after passing through the diverting pulley is horizontally arranged. Thus, energy loss caused by friction can be effectively reduced.
Furthermore, the driving mechanism comprises a driving motor, a screw rod and a nut, the driving motor is installed in the vehicle, the screw rod is installed in the vehicle through a bearing and a bearing seat, the nut is fixed on the base and meshed with the screw rod, and a guide rail is arranged between the base and the vehicle. According to the structure, when the driving motor works, the driving motor drives the screw rod to rotate, and the screw rod drives the nut to move linearly, so that the base is driven to move on the guide rail.
Drawings
Fig. 1 is a perspective view of a mechanical part of the present invention.
Fig. 2 is a perspective view of another view angle of the mechanical part of the present invention.
Fig. 3 is a perspective view of the third viewing angle of the mechanical part of the present invention.
Fig. 4 is a schematic view of a wire spool.
Fig. 5 is a schematic diagram of an electric control part.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The intelligent automobile brake-by-wire system comprises a mechanical part and an electric control part.
As shown in fig. 1 to 3, the mechanical part includes a base 101, a driving mechanism 102, a control motor 1, a wire spool 2, a cable 3, a pulley assembly 4, a diverting pulley 91, a guide pulley 92, and a brake arm 5.
The base 101 is slidably mounted in the vehicle through a guide rail 1011; the driving mechanism 102 includes a driving motor 1021, a lead screw 1022 installed in the vehicle through a bearing and a bearing housing, and a nut 1023 engaged with the lead screw, which is fixed on the base. When the driving motor works, the driving motor drives the screw rod to rotate, and the screw rod drives the nut to move linearly, so that the base is driven to move on the guide rail. The moving direction of the base is the same as the swinging direction of the brake arm.
Control motor 1 passes through the motor cabinet to be installed at base 101, and control motor 1 is located one side of brake arm 5, installs shaft coupling 6 on control motor 1's output shaft, installs drive shaft 7 on shaft coupling 6, through setting up shaft coupling 6, protection control motor 1 that can be better.
The wire spool 2 is mounted on the driving shaft 7 by a key, as shown in fig. 1 and 4, spiral grooves 22 are respectively provided on the circumference of the wire spool 2 from the middle 21 in the axial direction to both ends along the axial direction, and the spiral directions of the spiral grooves extending from the middle to both ends are opposite; as shown in fig. 4, for convenience of processing, the wire spool 2 includes a first wire spool 23 and a second wire spool 24, one end face of the first wire spool 23 and one end face of the second wire spool 24 are attached to each other after the first wire spool 23 and the second wire spool 24 are installed, the middle part of the wire spool is the place of attachment, the spiral grooves are connected at the positions, the spiral directions of the spiral grooves of the first wire spool and the second wire spool are opposite, for better axially fixing the wire spool 2, a step is arranged on the driving shaft, and the wire spool is fixed through a nut.
One end of the inhaul cable 3 is connected to the middle of the wire spool 2 along the axial direction, and when the wire spool rotates forwards or backwards, the inhaul cable 3 can enter the spiral groove in the corresponding rotating direction from the spiral groove in the middle.
The pulley assembly 4 is installed in the vehicle and located right in front of the brake arm 5, as shown in fig. 1 to 3, the pulley assembly includes a pulley seat 41, a connecting arm 42, a pulley shaft 43, a pulley bearing (not shown in the figure) and a pulley 44, the pulley seat 41 is installed on the base, the connecting arm 42 is fixed on the pulley seat 41, the pulley 44 is installed on the connecting arm 42 through the pulley shaft 43 and the pulley bearing, the axis of the pulley is parallel to the axis of the driving shaft, and the lowest point of the pulley is on the same horizontal plane as the lowest point of the wire spool, so that when the cable receives a pulling force, the pulley and the wire spool mainly receive a force along the radial direction of the wire spool.
The guide pulley 1a is installed on the base through the base, the guide pulley 1a is located right behind the brake arm, the axial direction of the guide pulley 1a is perpendicular to the axial direction of the pulley, the steering pulley 2a is installed on the base, and the axial line of the steering pulley 2a is perpendicular to the axial direction.
The upper end of the brake arm 5 is hinged on the vehicle; the cable 3 is connected to the middle of the brake arm 5 via a pulley, a diverting pulley 2a and a guide pulley 1 a.
As shown in fig. 5, the electronic control system includes a brake pedal assembly, a relay 3a, a brake MCU and an ACU; the brake pedal assembly is connected with the brake MCU through the relay, a first fixed contact of the relay is connected with the brake pedal assembly, a second fixed contact of the relay is connected with the ACU, a movable contact of the relay is connected with the brake MCU, and the first fixed contact of the relay and the movable contact of the relay are normally closed switches; the two ends of the relay are connected with a switch in parallel, the brake MCU is connected with the brake system, and the ACU is connected with the control motor. The ACU is model ACU 32k148 of Enzhipu.
The base is arranged in the vehicle in a sliding mode through the driving mechanism, the guide pulley is arranged, when the control motor works, the control motor drives the wire spool to rotate, the wire spool winds the inhaul cable, the inhaul cable generates pulling force on the brake arm, the brake arm swings, the driving mechanism drives the base to move in the swinging process of the brake arm, the pulling force direction of the inhaul cable acting on the brake arm is parallel to the tangential direction of the swinging arc line of the brake arm at the corresponding moment as much as possible, component force is reduced, the pulling force is used on braking to the maximum extent, and the motion direction of the base is basically perpendicular to the swinging direction of the brake arm, so that the influence of the motion of the base on braking is small.
For the electric control part, in an intelligent driving mode, an ACU (access control unit) is signaled, and the ACU directly controls and controls a motor to realize braking; meanwhile, when the ACU is electrified, the second fixed contact of the relay is communicated with the first movable contact, so that a signal given by the CAN bus passes through the ACU and then is transmitted to the brake MCU through the relay, and the braking action is realized through the brake system. When manual operation is needed, the ACU is powered off, the first movable contact of the relay is communicated with the first fixed contact of the relay, and the brake pedal assembly controls the brake system to act, so that good intelligent and manual switching can be realized.
Claims (7)
1. The utility model provides an intelligent automobile drive-by-wire braking system which characterized in that: comprises a mechanical part and an electric control part; the mechanical part comprises a base, a control motor, a wire spool, a pull cable, a pulley assembly, a steering pulley, a guide pulley and a brake arm; the base is arranged in the vehicle in a sliding manner along the swinging direction of the brake arm, a driving mechanism is arranged between the vehicle and the base, the control motor is arranged on the base positioned on one side of the brake arm, the output end of the control motor is connected with the wire spool, the pulley assembly is arranged on the base, the steering pulley is arranged on the base, the guide pulley is arranged on the base positioned right in front of the brake arm, the axis of the pulley assembly is parallel to the axis of the wire spool, the axis of the guide pulley is vertical to the axis of the pulley assembly, and the axial direction of the steering pulley is vertical; the brake arm is hinged in the vehicle; one end of the inhaul cable is connected with the wire spool, and the other end of the inhaul cable is connected to the middle part of the brake arm through the pulley assembly, the steering pulley and the guide pulley in sequence; the electric control system comprises a brake pedal assembly, a relay, a brake MCU and an ACU; the brake pedal assembly is connected with the brake MCU through the relay, a first fixed contact of the relay is connected with the brake pedal assembly, a second fixed contact of the relay is connected with the ACU, a movable contact of the relay is connected with the brake MCU, and the first fixed contact of the relay and the movable contact of the relay are normally closed switches; the two ends of the relay are connected with a switch in parallel, the brake MCU is connected with the brake system, and the ACU is connected with the control motor.
2. The intelligent automobile brake-by-wire system according to claim 1, wherein: a coupling is mounted on an output shaft of the control motor, a driving shaft is mounted on the coupling, and the wire spool is mounted on the driving shaft.
3. The intelligent automobile brake-by-wire system according to claim 1, wherein: spiral grooves are respectively arranged from the middle part of the axial direction to the two ends along the axial direction on the circumference of the wire spool, and the spiral directions of the spiral grooves extending from the middle part to the two ends are opposite.
4. The intelligent automobile brake-by-wire system according to claim 1, wherein: the pulley assembly comprises a pulley seat, a connecting arm, a pulley shaft, a pulley bearing and a pulley, wherein the pulley seat is installed in the vehicle, the connecting arm is pivoted on the pulley seat, and the pulley is installed on the connecting arm through the pulley shaft and the pulley bearing.
5. The intelligent automobile brake-by-wire system according to claim 4, wherein: the lowest point of the pulley is on the same horizontal plane with the lowest point of the wire spool.
6. The intelligent automobile brake-by-wire system according to claim 4, wherein: the part of the inhaul cable entering the pulley after passing through the diverting pulley is horizontally arranged.
7. The intelligent automobile brake-by-wire system according to claim 1, wherein: the driving mechanism comprises a driving motor, a screw rod and a nut, the driving motor is installed in the vehicle, the screw rod is installed in the vehicle through a bearing and a bearing seat, the nut is fixed on the base and meshed with the screw rod, and a guide rail is arranged between the base and the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121338053.6U CN215097532U (en) | 2021-06-16 | 2021-06-16 | Intelligent automobile line control brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121338053.6U CN215097532U (en) | 2021-06-16 | 2021-06-16 | Intelligent automobile line control brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215097532U true CN215097532U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121338053.6U Active CN215097532U (en) | 2021-06-16 | 2021-06-16 | Intelligent automobile line control brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215097532U (en) |
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2021
- 2021-06-16 CN CN202121338053.6U patent/CN215097532U/en active Active
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