CN215097531U - Intelligent automobile drive-by-wire brake device - Google Patents

Abstract

The utility model discloses an intelligent automobile line control brake device, which comprises a control motor, a wire spool, a guy cable, a pulley assembly and a brake arm, wherein the control motor is arranged in a vehicle positioned at one side of the brake arm; a coupling is arranged on an output shaft of the control motor, a driving shaft is arranged on the coupling, a wire spool is arranged on the driving shaft, one end of a stay cable is connected to the brake arm, and the other end of the stay cable is wound on the central position of the wire spool along the axial direction through a pulley assembly; 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. The utility model aims at providing a winding on the wire reel that lets the cable reliable, accurate.

Description

Intelligent automobile drive-by-wire brake device

Technical Field

The utility model relates to an intelligent automobile drive-by-wire arresting gear.

Background

The intelligent automobile mainly comprises three links of network navigation, autonomous driving and manual intervention, so that automatic driving is realized by controlling under most conditions, and automation is required by a driver aiming at the operation required by the traditional automobile.

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 realizes the automatic control of the connecting pedal assembly, the driving wheel is only provided with one winding groove, when the steel cable is wound, the steel cable is necessarily wound in an overlapped mode, in this case, the winding steel cable at the outer ring is possibly crossed with the winding steel cable at the inner ring, once the pulling force exists, if the side edge of the steel cable at the outer ring has a space, the steel cable at the outer ring can slip from the steel cable at the inner ring to enter the space, and therefore, the steel cable pulls the connecting pedal assembly to be loosened, the braking is inaccurate, and even safety accidents can occur.

Disclosure of Invention

In order to let winding on the wire reel that the cable is reliable, accurate, the utility model provides an intelligent automobile drive-by-wire arresting gear.

In order to achieve the aim, the intelligent automobile wire control brake device comprises a control motor, a wire spool, a pull cable, a pulley assembly and a brake arm, wherein the control motor is arranged in an automobile positioned on one side of the brake arm; a coupling is arranged on an output shaft of the control motor, a driving shaft is arranged on the coupling, a wire spool is arranged on the driving shaft, one end of a stay cable is connected to the brake arm, and the other end of the stay cable is wound on the central position of the wire spool along the axial direction through a pulley assembly; 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.

Above-mentioned structure, when control motor during operation, it is rotatory that control motor passes through the shaft coupling and drives the drive shaft, and it is rotatory that the drive shaft drives the wire reel, and under the effect of helicla flute, the cable twines in the helicla flute along the helicla flute, the winding cable mutual interference's of each circle phenomenon can not appear, the phenomenon of slippage is difficult to appear, consequently, 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 is fixed on the pulley holder, and the pulley passes through pulley shaft and pulley bearing and installs on the linking arm, and the axis of pulley is parallel with the axis of drive shaft. The axis of the pulley is parallel to the axis of the driving shaft, so that under the action of the inhaul cable, the pulley and the wire spool are mainly subjected to radial force, and the generation of axial tension is reduced.

Furthermore, a guide mechanism is installed on the pulley seat and comprises a guide post, a guide support and guide wheels, the guide post is installed on the pulley seat and located right below the brake arm, a through hole which is communicated up and down is formed in the guide post, the guide supports are respectively installed on two opposite side walls, located at the through hole, of the upper end of the guide post, the guide wheels are installed at the inner ends of the guide supports, guide grooves are formed in the circumference of the guide wheels, circular guide holes are formed in the sections, close to each other, of the guide grooves, the inhaul cables penetrate through the guide holes, and the axis of each guide wheel is perpendicular to the axis of the pulley. This structure, at the in-process of pulling brake arm, because the brake arm is articulated to be on the car, consequently, the brake arm belongs to the swing action, and like this, the point that cable and brake arm are connected also can follow the swing and cause the phenomenon that the position changes, form the guiding hole when adopting two leading wheels, then no matter what kind of change takes place for the tie point of cable and brake arm, then can remain the cable that is located the leading wheel below all the time and be perpendicular downward with the pulley effect, and like this, on the one hand, the cable is difficult to break away from the pulley, on the other hand can guarantee the stability of pulley atress. Through setting up the leading wheel, then can reduce wearing and tearing, reduce the loss of ability.

Further, the lowest point of the pulley and the lowest point of the wire spool are on the same horizontal plane.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic view of the guide mechanism.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the intelligent automobile brake-by-wire device includes a control motor 1, a wire spool 2, a cable 3, a pulley assembly 4 and a brake arm 5.

Control motor 1 passes through the motor cabinet to be installed in the car, 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 through a key, as shown in fig. 1, spiral grooves 22 are respectively arranged on the circumference of the wire spool 2 from the middle part 21 of the axial direction to the two ends along the axial direction, and the spiral directions of the spiral grooves extending from the middle part to the two ends are opposite; as shown in fig. 2, 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 the second wire spool 24 is attached, the middle part of the wire spool is at the place of attachment, the spiral grooves are connected at the position, the spiral grooves of the first wire spool and the second wire spool are opposite in rotation direction, 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. 2, 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 in the vehicle, 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 and the lowest point of the spool are on the same horizontal plane, so that when the cable receives a pulling force, the pulley and the spool mainly receive a force along the radial direction of the spool.

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 through a pulley.

As shown in fig. 3, a guide mechanism 8 is mounted on the pulley seat 41, the guide mechanism 8 includes a guide post 81, a guide bracket 82 and a guide wheel 83, the guide post 81 is mounted on the pulley seat 41 and located right below the brake arm 5, a through hole 811 passing through the guide post 81 from top to bottom is provided on the guide post 81 for passing through the cable 3, an arc surface 812 is provided on one side of the lower end of the guide post 81 for cooperating with the pulley, the guide brackets 82 are mounted on two opposite side walls of the through hole at the upper end of the guide post 81, the guide wheel 83 is mounted at the inner end of the guide bracket 82, a guide groove 831 is provided on the circumference of the guide wheel, a circular guide hole 830 is formed on the cross section of the guide groove where the two guide wheels approach each other, the cable 3 passes through the guide hole 830, and the axis of the guide wheel 83 is perpendicular to the axis of the pulley. This structure, at the in-process of pulling brake arm, because the brake arm is articulated to be on the car, consequently, the brake arm belongs to the swing action, and like this, the point that cable and brake arm are connected also can follow the swing and cause the phenomenon that the position changes, form the guiding hole when adopting two leading wheels, then no matter what kind of change takes place for the tie point of cable and brake arm, then can remain the cable that is located the leading wheel below all the time and be perpendicular downward with the pulley effect, and like this, on the one hand, the cable is difficult to break away from the pulley, on the other hand can guarantee the stability of pulley atress. Through setting up the leading wheel, then can reduce wearing and tearing, reduce the loss of ability.

This embodiment, when control motor during operation, it is rotatory that control motor passes through the shaft coupling and drives the drive shaft, and it is rotatory that the drive shaft drives the wire reel, and under the effect of helicla flute, the cable twines in the helicla flute along the helicla flute, the phenomenon of each winding cable mutual interference can not appear, the phenomenon of slippage is difficult to appear, consequently, 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.

Claims (4)

1. An intelligent automobile wire control brake device comprises a control motor, a wire spool, a pull cable, a pulley assembly and a brake arm, wherein the control motor is arranged in an automobile positioned on one side of the brake arm; the method is characterized in that: a coupling is arranged on an output shaft of the control motor, a driving shaft is arranged on the coupling, a wire spool is arranged on the driving shaft, one end of a stay cable is connected to the brake arm, and the other end of the stay cable is wound on the central position of the wire spool along the axial direction through a pulley assembly; 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.

2. The intelligent automobile brake-by-wire device 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 fixed on the pulley seat, the pulley is installed on the connecting arm through the pulley shaft and the pulley bearing, and the axis of the pulley is parallel to the axis of the driving shaft.

3. The intelligent automobile brake-by-wire device according to claim 1, wherein: the pulley seat is provided with a guide mechanism, the guide mechanism comprises a guide post, a guide support and guide wheels, the guide post is arranged on the pulley seat and is positioned under the brake arm, the guide post is provided with a through hole which is communicated up and down, the upper end of the guide post is positioned on two opposite side walls of the through hole, the guide support is respectively arranged on the two opposite side walls, the guide wheel is arranged at the inner end of the guide support, the circumference of the guide wheel is provided with a guide groove, the cross section of the guide groove, which is close to each other, of the two guide wheels forms a circular guide hole, the inhaul cable penetrates through the guide hole, and the axis of the guide wheel is vertical to the axis of the pulley.

4. The intelligent automobile brake-by-wire device according to claim 2, wherein: the lowest point of the pulley is on the same horizontal plane with the lowest point of the wire spool.

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