CN212775280U

CN212775280U - Electronic brake/parking mechanism

Info

Publication number: CN212775280U
Application number: CN202020652531.XU
Authority: CN
Inventors: 谭海军; 郭军; 周映双; 李果; 曾彬
Original assignee: Yibin Cowin Auto Co Ltd
Current assignee: Yibin Cowin Auto Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-03-23
Anticipated expiration: 2030-04-26

Abstract

The utility model provides a be applied to automobile parts technical field's electron brake/parking mechanism, the tooth portion of motor runner (2) of motor (1) of electron brake/parking mechanism be connected with the tooth portion meshing of lead screw runner (3), lead screw runner (3) and lead screw (4) one end fixed connection, suit disk seat (5) are gone up in lead screw (4), set up ball (6) between disk seat (5) and lead screw (4), disk seat (5) set up to the active structure, disk seat (5) are connected with piston rod (8) of pneumatic cylinder (7), the utility model discloses an electron brake/parking mechanism, simple structure, through ball screw cooperation motor and pneumatic cylinder to directly connect the output pressure port of pneumatic cylinder in parallel on the former hydraulic system of car, reliably realize the electronic control of calliper, can realize more that the matching, And the integration, the reliability and the precision are high.

Description

Electronic brake/parking mechanism

Technical Field

The utility model belongs to the technical field of automobile parts, more specifically say, relate to an electron brake/parking mechanism.

Background

Currently, electronic parking brake systems generally employ both cable pull and integrated caliper. For the steel cable traction type mechanism, the additional installation cost is low, but the motor is adopted to drive the pull wire to realize braking, the occupied space is large, the overall structure arrangement is not facilitated, the precision is not high, and the steel cable traction type mechanism is not suitable for an electronic system. The integrated caliper type structure brake is characterized in that a brake caliper, a motor, a belt gear and the like are needed, so that the cost is high, the integrated caliper type structure brake is realized by directly acting a motor on a screw through a speed reducer, the screw pushes a brake piston to move axially through a bolt-nut mechanism to realize brake, the bolt-nut converts rotary motion into translational motion, the loss energy is large, a brake system is easily overheated, the axial movement precision is difficult to control, and the brake force is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: aiming at the defects of the prior art, the electronic brake/parking mechanism is simple in structure, the ball screw is matched with the motor and the hydraulic cylinder, so that the output pressure port of the hydraulic cylinder is directly connected in parallel to the original hydraulic system of the automobile, the electronic control of calipers is reliably realized, the matching and integration of the whole automobile can be realized, and the reliability is high.

To solve the technical problem, the utility model discloses the technical scheme who takes does:

the utility model relates to an electron brake/parking mechanism, including the motor, the tooth portion of the motor runner of motor is connected with the tooth portion meshing of lead screw runner, lead screw runner and lead screw one end fixed connection, suit disk seat on the lead screw, set up the ball between disk seat and the lead screw, the disk seat set up to the active structure, the disk seat is connected with the piston rod of pneumatic cylinder.

The electronic brake/parking mechanism further comprises a speed reducer, a tooth part of a motor rotating wheel of the motor is meshed with an input rotating wheel of the speed reducer, and a tooth part of a lead screw rotating wheel is meshed with an output rotating wheel of the speed reducer.

The surface of the screw rod is provided with a screw rod groove which is spirally arranged, the valve seat is provided with a screw rod hole, and the inner wall of the screw rod hole is provided with a spiral valve seat groove.

The ball is provided with a plurality of balls, each ball part is positioned in a screw groove of the screw, and each ball part is positioned in a valve seat groove of the valve seat.

The electronic brake/parking mechanism is characterized in that a lead screw rotating wheel of the electronic brake/parking mechanism is perpendicular to a lead screw, and the central line of the lead screw is of a structure which can be superposed with the central point of the lead screw rotating wheel.

The hydraulic cylinder is fixedly arranged on the automobile, a piston is arranged in the hydraulic cylinder, the piston is connected with a piston rod, and the valve seat is fixedly connected with the piston rod.

The electronic brake/parking mechanism further comprises brake/parking calipers, and the hydraulic cylinder is connected with the calipers.

The motor is connected with a control part capable of controlling the starting and stopping, forward and reverse rotation and rotation speed adjustment of the motor, the control part is also arranged into a structure capable of sending a parking/braking execution signal or a parking/braking contact signal to the motor, and when the control part sends the parking/braking execution signal to the motor to control the motor to rotate, a motor rotating wheel of the motor is arranged into a structure capable of driving a lead screw to rotate in one direction through the lead screw rotating wheel so as to drive a valve seat to axially move in one direction; when the control component sends a signal for releasing parking/braking to the motor to control the motor to rotate, the motor rotating wheel of the motor is set to be a structure which can drive the screw rod to rotate towards the other direction through the screw rod rotating wheel so as to drive the valve seat to axially move towards the other direction.

When the lead screw drives the valve seat to axially move towards one direction, the lead screw is set to be capable of pushing the piston in the hydraulic cylinder to move towards one direction, so that hydraulic oil in the hydraulic cylinder is driven to apply force to push the calipers to move, and the automobile parking/braking structure is realized.

When the screw rod drives the valve seat to axially move towards the other direction, the screw rod is set to be capable of pulling the piston in the hydraulic cylinder to move towards the other direction, so that hydraulic oil in the hydraulic cylinder does not act on the calipers any more, and when the hydraulic oil of the hydraulic cylinder does not act on the calipers any more, the calipers are set to be of a structure capable of releasing the parking/braking of the automobile.

Adopt the technical scheme of the utility model, can obtain following beneficial effect:

electronic brake/parking mechanism, through the motor as the power supply, transmission power arrives the lead screw, during the lead screw rotates, drives the disk seat for lead screw axial displacement, disk seat output external force to pneumatic cylinder, and hydraulic control is realized to hydraulic oil in the pneumatic cylinder to drive the calliper action, realize the execution brake/parking control of car or remove brake/parking. The cooperation of lead screw and disk seat can reliably accurately realize the linear, the continuous stable change of the pressure value of the hydraulic pressure output end of pneumatic cylinder, and is parallelly connected with the hydraulic system of the original calliper control of car, realizes steady brake/parking braking control, and with the effective cooperation of former system, reduce cost to the commonality obtains improving by a wide margin. The screw rod and the valve seat are in matched transmission, so that the precision requirement of electronic braking is effectively met by the characteristics of high transmission efficiency, high transmission precision, high-speed feeding, micro-feeding, high axial rigidity, transmission reversibility and the like. The motor drives the lead screw to rotate, the lead screw is used as a transmission mechanism for converting rotary motion into linear motion, the hydraulic system has the characteristics of high efficiency, high precision, reversible transmission and the like, and can realize linear bidirectional adjustment of the pressure value of the hydraulic cylinder of the hydraulic system, so that normal and stable operation of a brake is met. The structure can be reliably connected and matched with the system of the existing whole vehicle, and has short response time and high precision during braking, so that intelligent driving is more comfortable and safe. Through the cooperation of motor, lead screw, disk seat, can realize the accurate linearity of the linear motion displacement of lead screw, then with its linear motion direct action in pneumatic cylinder to certain pressure of output acts on calliper, and like this, can be directly with the utility model discloses a device connects in parallel on current hydraulic pressure mechanism, only needs the control that the motor is just can accurate realization brake parking function. Electronic brake/parking mechanism, simple structure through ball cooperation motor and pneumatic cylinder to directly connect in parallel the delivery pressure port of pneumatic cylinder on the former hydraulic system of car, reliably realize the electronic control of calliper, can realize more that whole car matches, integration, the reliability is high, the precision is high.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

fig. 1 is a schematic structural diagram of an electronic braking/parking mechanism according to the present invention;

fig. 2 is a schematic view of a matching structure between a valve seat and a lead screw of the electronic brake/parking mechanism of the present invention;

in the drawings, the reference numbers are respectively: 1. a motor; 2. a motor runner; 3. a lead screw runner; 4. a lead screw; 5. a valve seat; 6. a ball bearing; 7. a hydraulic cylinder; 8. a piston rod; 9. a speed reducer; 10. a lead screw groove; 11. a screw hole; 12. a valve seat groove; 13. a piston; 14. and a movable member.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings, for example, the shapes, structures, mutual positions and connection relations of the components, the functions and operation principles of the components, and the like:

as shown in fig. 1 and fig. 2, the utility model relates to an electron brake/parking mechanism, including motor 1, the tooth portion of motor runner 2 of motor 1 is connected with the tooth portion meshing of lead screw runner 3, and

lead screw runner

3 and 4 one end fixed connection of lead screw are gone up suit disk seat 5 on the lead screw 4, set up ball 6 between disk seat 5 and the lead screw 4, disk seat 5 set up to the active structure, disk seat 5 is connected with the piston rod 8 of pneumatic cylinder 7. According to the structure, the motor is used as a power source to transmit power to the lead screw, when the lead screw rotates, the valve seat is driven to move axially relative to the lead screw, the valve seat outputs external force to the hydraulic cylinder, hydraulic control is realized through hydraulic oil in the hydraulic cylinder, and therefore the calipers are driven to act, and braking/parking control or braking/parking releasing of an automobile is realized. The cooperation of lead screw and disk seat can reliably accurately realize the linear, the continuous stable change of the pressure value of the hydraulic pressure output end of pneumatic cylinder, and is parallelly connected with the hydraulic system of the original calliper control of car, realizes steady brake/parking braking control, and with the effective cooperation of former system, reduce cost to the commonality obtains improving by a wide margin. The screw rod and the valve seat are in matched transmission, so that the precision requirement of electronic braking is effectively met by the characteristics of high transmission efficiency, high transmission precision, high-speed feeding, micro-feeding, high axial rigidity, transmission reversibility and the like. The motor drives the lead screw to rotate, the lead screw is used as a transmission mechanism for converting rotary motion into linear motion, the hydraulic system has the characteristics of high efficiency, high precision, reversible transmission and the like, and can realize linear bidirectional adjustment of the pressure value of the hydraulic cylinder of the hydraulic system, so that normal and stable operation of a brake is met. The structure can be reliably connected and matched with the system of the existing whole vehicle, and has short response time and high precision during braking, so that intelligent driving is more comfortable and safe. Through the cooperation of motor, lead screw, disk seat, can realize the accurate linearity of the linear motion displacement of lead screw, then with its linear motion direct action in pneumatic cylinder to certain pressure of output acts on calliper, and like this, can be directly with the utility model discloses a device connects in parallel on current hydraulic pressure mechanism, only needs the control that the motor is just can accurate realization brake parking function. Electronic brake/parking mechanism, simple structure through ball cooperation motor and pneumatic cylinder to directly connect in parallel the delivery pressure port of pneumatic cylinder on the former hydraulic system of car, reliably realize the electronic control of calliper, can realize more that whole car matches, integration, the reliability is high.

The electronic braking/parking mechanism further comprises a speed reducer 9, the tooth part of the motor rotating wheel 2 of the motor 1 is meshed with the speed reducer input rotating wheel of the speed reducer 9, and the tooth part of the lead screw rotating wheel 3 is meshed with the speed reducer output rotating wheel of the speed reducer 9. In the structure, the speed reducer is arranged between the motor and the screw rod. Like this, on the one hand, the variable speed of motor speed is realized through the variable speed of reduction gear, and the rotational speed demand when satisfying the lead screw rotation, on the other hand, can realize speed steady, the linear change through the variable speed of reduction gear, and transmission efficiency is high, can better satisfy brake/parking system performance demand. And after the linear motion of the lead screw is facilitated by the rotary motion of the motor, the lead screw is reliably matched with the valve seat, and the device has the characteristics of high transmission efficiency, high transmission precision, high-speed feeding, micro-feeding, high axial rigidity, transmission reversibility and the like, so that the braking requirement of the automobile is effectively met.

The surface of the screw rod 4 is provided with a screw rod groove 10 which is spirally arranged, the valve seat 5 is provided with a screw rod hole 11, and the inner wall of the screw rod hole 11 is provided with a spiral valve seat groove 12. The valve seat is movably connected with the lead screw, the valve seat is always in a fixed state, and the lead screw rotates

The balls 6 are arranged in a plurality, each ball 6 is partially positioned in a screw groove 10 of the screw 4, and each ball 6 is partially positioned in a valve seat groove 12 of the valve seat 5. Above-mentioned structure, the ball sets up between disk seat and lead screw, realizes the rolling contact between disk seat and the lead screw, reduces wearing and tearing. Meanwhile, the electric valve seat can move axially relative to the screw rod when the screw rod rotates. Therefore, the rotating force of the motor is transmitted to the lead screw and then transmitted to the hydraulic cylinder in sequence, and the control of the calipers is realized.

The lead screw rotating wheel 3 and the lead screw 4 of the electronic braking/parking mechanism are vertically arranged, and the central line of the lead screw 4 is of a structure which can be superposed with the central point of the lead screw rotating wheel 3. According to the structure, when the screw rod rotating wheel rotates, the screw rod is driven to rotate, so that the force of the rotating motion of the screw rod rotating wheel is transmitted to the screw rod and then becomes the axial motion of the valve seat, and therefore the hydraulic cylinder is controlled.

The hydraulic cylinder 7 is fixedly arranged on the automobile, a piston 13 is arranged in the hydraulic cylinder 7, the piston 13 is connected with the piston rod 8, and the valve seat 5 is fixedly connected with the piston rod 8. The electronic brake/parking mechanism further comprises a brake/parking caliper, and the hydraulic cylinder 7 is connected with the caliper. According to the structure, when the valve seat moves axially, the piston rod drives the piston to move axially, so that the change of an oil cavity in the hydraulic cylinder is changed, hydraulic oil can act as required, and the calipers are controlled accurately and efficiently.

The control device comprises a motor 1, a control component, a motor rotating wheel 2 and a valve seat 5, wherein the motor 1 is connected with the control component capable of controlling the motor 1 to start and stop, rotate forwards and backwards and adjust the rotating speed, the control component is also arranged into a structure capable of sending a parking/braking execution signal or a parking/braking contact signal to the motor 1, and when the control component sends the parking/braking execution signal to the motor 1 to control the motor 1 to rotate, the motor rotating wheel 2 of the motor 1 is arranged into a structure capable of driving a screw rod 4 to rotate towards one direction through a screw rod rotating wheel 3 so as to; when the control component sends a signal for releasing parking/braking to the motor 1 to control the motor 1 to rotate, the motor rotating wheel 2 of the motor 1 is set to be a structure which can drive the screw rod 4 to rotate towards the other direction through the screw rod rotating wheel 3 so as to drive the valve seat 5 to axially move towards the other direction. When the lead screw 4 drives the valve seat 5 to axially move towards one direction, the lead screw 4 is set to be capable of pushing the piston 13 in the hydraulic cylinder 7 to move towards one direction, so that hydraulic oil in the hydraulic cylinder 7 is driven to apply force to push the calipers to move, and the parking/braking structure of the automobile is realized. When the lead screw 4 drives the valve seat 5 to move axially in the other direction, the lead screw 4 is set to be capable of pulling the piston 13 in the hydraulic cylinder 7 to move in the other direction, so that hydraulic oil in the hydraulic cylinder 7 is not acted on the caliper any more, and when the hydraulic oil of the hydraulic cylinder 7 is not acted on the caliper any more, the caliper is set to be capable of releasing the parking/braking structure of the automobile. In the structure, the motor is used as a power source and is responsible for providing rotary power for the whole mechanism. The speed reducer is used for adjusting the rotating speed of the motor to the rotating speed matched with the screw rod, and the speed requirement of axial movement control of the valve seat is met. And the screw rod is matched with the valve seat and is responsible for converting the rotary motion of the screw rod rotating wheel into the axial linear motion of the valve seat. The hydraulic cylinder is responsible for converting the force applied to the piston rod by the axial linear motion of the valve seat into the reciprocating motion of the piston in the hydraulic cylinder, so that when the piston in the hydraulic cylinder axially moves towards different directions, the clamping or opening control of the calipers can be realized, the parking/braking control of the automobile can be executed or the parking/braking of the automobile can be released, and the whole control process is accurate and timely.

The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and the present invention can be implemented in various ways without modification, and the present invention is not limited by the above embodiments.

Claims

1. An electronic brake/parking mechanism is characterized in that: comprising a motor (1), the teeth of the motor wheel (2) of the motor (1) and the teeth of the screw wheel (3) The lead screw runner (3) is fixedly connected with one end of the lead screw (4), the lead screw (4) is fitted with a valve seat (5), and a ball (5) is set between the valve seat (5) and the lead screw (4). 6), the valve seat (5) is arranged as a movable structure, and the valve seat (5) is connected with the piston rod (8) of the hydraulic cylinder (7).

2. The electronic braking/parking mechanism according to claim 1, characterized in that: the electronic braking/parking mechanism further comprises a reducer (9), a tooth of the motor wheel (2) of the motor (1) The tooth portion is meshed and connected with the reducer input runner of the reducer (9), and the tooth portion of the lead screw runner (3) is meshed and connected with the reducer output runner of the reducer (9).

3. The electronic brake/parking mechanism according to claim 1 or 2, characterized in that: the surface of the lead screw (4) is provided with a screw groove (10) arranged in a helical shape, and the valve seat (5) is provided with a screw groove (10). The screw hole (11) is provided with a helical valve seat groove (12) on the inner wall of the screw hole (11).

4. The electronic brake/parking mechanism according to claim 3, wherein a plurality of the balls (6) are provided, and each ball (6) is partially located in the screw groove (10) of the screw (4). ), each ball (6) is partially located in the valve seat groove (12) of the valve seat (5).

5. The electronic brake/parking mechanism according to claim 1 or 2, wherein the lead screw runner (3) of the electronic brake/parking mechanism is arranged vertically with the lead screw (4), and the lead screw The center line of (4) is set to be able to coincide with the center point of the screw wheel (3).

6. The electronic brake/parking mechanism according to claim 1 or 2, characterized in that: the hydraulic cylinder (7) is fixedly arranged on the automobile, a piston (13) is arranged in the hydraulic cylinder (7), and the piston ( 13) Connect with the piston rod (8), and the valve seat (5) is fixedly connected with the piston rod (8).

7. The electronic brake/parking mechanism according to claim 1 or 2, characterized in that: the electronic braking/parking mechanism further comprises a brake/parking caliper, and the hydraulic cylinder (7) is connected with the caliper.

8. The electronic brake/parking mechanism according to claim 7, characterized in that: the motor (1) is connected to a control component capable of controlling the start/stop, forward and reverse rotation and rotational speed adjustment of the motor (1), and the control component It is also arranged to be able to send a parking/brake signal or a contact parking/brake signal to the motor (1), and the control component sends a parking/brake signal to the motor (1) to control the motor (1) to rotate, the motor The motor runner (2) of (1) is set to a structure that can drive the lead screw (4) to rotate in one direction through the lead screw runner (3) to drive the valve seat (5) to move axially in one direction; When the motor (1) sends a parking/brake release signal to control the rotation of the motor (1), the motor wheel (2) of the motor (1) is set to be able to drive the screw (4) to the other through the screw wheel (3). A structure that rotates in one direction to drive the valve seat (5) to move axially in the other direction.

9. The electronic brake/parking mechanism according to claim 8, characterized in that: when the lead screw (4) rotates in one direction to drive the valve seat (5) to move axially in one direction, the lead screw (4) ) is arranged to be able to push the piston (13) in the hydraulic cylinder (7) to move in one direction, thereby driving the hydraulic oil in the hydraulic cylinder (7) to exert force to push the caliper to move to realize the structure of car parking/braking.

10. The electronic brake/parking mechanism according to claim 8, characterized in that: when the lead screw (4) rotates in another direction to drive the valve seat (5) to move axially in another direction, the lead screw (4) It is set to be able to pull the piston (13) in the hydraulic cylinder (7) to move in another direction, so that the hydraulic oil in the hydraulic cylinder (7) no longer acts on the caliper, and the hydraulic oil in the hydraulic cylinder (7) does not When acting on the caliper, the caliper is configured to release the parking/brake of the car.