CN216490101U

CN216490101U - Gear-free electric drive automobile braking system with axially movable rotor

Info

Publication number: CN216490101U
Application number: CN202123436163.9U
Authority: CN
Inventors: 白俊海; 白鹤
Original assignee: Changchun Sanqiang Electronics Co ltd
Current assignee: Changchun Sanqiang Electronics Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-10
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a gearless electric drive automobile brake system with a rotor capable of axially moving, which belongs to the technical field of automobile brake, wherein the length of the stator of the gearless electric drive automobile brake system is greater than that of the rotor, and the rotor can axially move in the action range of a stator magnetic field, so that a gearless transformation process is realized to obtain continuous torque; the rotor is hollow, the motor shell consists of a central column and an outer sleeve sleeved on the outer side of the central column, threads are arranged on the inner side of the rotor and the outer side of the central column of the motor shell, the rotor and the central column of the motor shell are assembled together through the threads, and the rotor can axially move back and forth along the central column when the rotor rotates forwards and backwards, so that continuous axial thrust is obtained in the process of gearless transformation; the utility model provides an electrically driven automobile braking system adopts gearless drive system, its small simple structure, and the convenience is made to the cost is low, and the at utmost has reduced rotation inertia, makes braking process more steady, has improved operating performance.

Description

Gear-free electric drive automobile braking system with axially movable rotor

Technical Field

The utility model belongs to the technical field of the car braking, specifically, but relate to a but rotor axial displacement's gearless electric drive car braking system.

Background

At present, the electric braking system of an automobile generally adopts a traditional motor to change torque into braking thrust through a gear transmission and a screw rod, and has the main defects of large volume, complex structure, high manufacturing cost and unstable action caused by large rotation inertia force.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to solve the problems that the traditional motor is driven by a gear and then a screw rod is used for converting torque into braking thrust, the size is large, the structure is complex, the manufacturing cost is high, and the effect is unstable due to large rotation penetration force, the gearless electric driving automobile braking system with the axially movable rotor is provided.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a but rotor axial displacement's no gear electric drive car braking system, includes motor casing, stator and rotor, and the motor casing cover is established outside brake push rod, and brake push rod can be for motor casing axial reciprocating motion, its characterized in that: the motor shell is composed of a central column and an outer sleeve sleeved on the outer side of the central column, the outer sleeve and the central column are cast into an integral structure, an annular space is formed between the outer sleeve and the central column, the central column is provided with a central hole which is communicated with the two ends of the central column along the axial direction, and the outer side wall of the central column is a threaded wall surface; the stator and the rotor are both in cylindrical annular structures, the stator and the rotor are coaxially and concentrically arranged in an annular space formed by the outer sleeve and the central column, the stator is sleeved outside the rotor, and the length of the stator is greater than that of the rotor, so that the rotor is always in the magnetic field action range of the stator in the whole automobile braking process; the rotor is sleeved on a central column of the motor shell, threads are arranged on the inner wall of the rotor, and the rotor and the central column of the motor shell are assembled together through the threads, so that when the rotor rotates forwards and backwards, the rotor can axially move back and forth along the central column, continuous axial thrust is obtained, and braking of an automobile is achieved.

Further, the gearless electric drive automobile brake system with the rotor capable of axially moving is characterized in that: the automobile brake device is characterized by also comprising a transmission sleeve, a return spring, a transmission bearing, a magnetic position sensor, a stroke controller, a rotation stopping flat key and a limiting blocking piece, wherein one side of the transmission sleeve is coaxially connected with the rotor through the transmission bearing, and the other side of the transmission sleeve is welded on a connector for connecting the brake push rod and the automobile brake actuating mechanism; the magnetic position sensor is arranged on the transmission sleeve, is in communication connection with the stroke controller and is used for transmitting a signal detected by the magnetic position sensor to the stroke controller; the stroke controller is arranged on the outer sleeve of the motor shell; the limiting blocking piece is arranged at one end, close to the transmission sleeve, of the motor shell; the return spring is coaxially arranged with the rotor, is positioned in the transmission sleeve and is sleeved outside a central column of the motor shell, one end of the return spring is abutted against the transmission sleeve, the other end of the return spring is abutted against the limiting stop piece, and the return spring is used for returning the rotor so as to release the braking of the automobile; the rotation stopping flat key is arranged between the brake push rod and the transmission sleeve and used for limiting the rotation of the transmission sleeve.

Furthermore, the length of an outer sleeve and a center column of the motor shell are the same and are arranged coaxially, the center column is arranged in the outer sleeve, two ends of the center column are flush, the outer sleeve is connected with one end of the center column in a sealed mode, and the other end of the outer sleeve is not connected with the other end of the center column.

Through the above design scheme, the utility model discloses following beneficial effect can be brought: the utility model provides a gearless electric drive automobile brake system with a rotor capable of axially moving, the length of a stator is greater than that of the rotor, the rotor can axially move in the action range of a stator magnetic field, and the gearless conversion process is realized to obtain continuous torque; the rotor is hollow, the motor shell consists of a central column and an outer sleeve sleeved on the outer side of the central column, threads are arranged on the inner side of the rotor and the outer side of the central column of the motor shell, the rotor and the central column of the motor shell are assembled together through the threads, and the rotor can axially move back and forth along the central column when the rotor rotates forwards and backwards, so that continuous axial thrust is obtained in the process of gearless transformation; the utility model provides an electrically driven automobile braking system adopts gearless drive system, its small simple structure, and the convenience is made to the cost is low, and the at utmost has reduced rotation inertia, makes braking process more steady, has improved operating performance.

Drawings

Fig. 1 is a schematic structural diagram of a gearless electrically driven automobile brake system with an axially movable rotor.

In the figure: 1-a transmission sleeve, 2-a return spring, 3-a transmission bearing, 4-a motor shell, 5-a stator, 6-a fixing plate, 7-a limiting stop, 8-a first fixing screw, 9-a brake push rod, 10-a fastening screw, 11-a rotor, 12-a second fixing screw, 13-an end cover, 14-a magnetic position sensor, 15-a stroke controller, 16-a controller bracket, 17-a connector, 18-a rotation-stopping flat key, 19-a limiting baffle and 20-a third fixing screw.

Detailed Description

To make the objects, features and advantages of the present invention more obvious and understandable, embodiments of the present invention are described below in conjunction with the present invention for clearly and completely describing the technical solutions of the present invention. Obviously, the present invention is not limited by the following embodiments, and specific embodiments can be determined according to the technical solution and practical circumstances of the present invention.

Well-known methods, procedures, and components have not been described in detail so as not to obscure the present invention. In the description of the present invention, it is to be understood that the terms "first," "second," and "third" are used for descriptive purposes only and that the features defined as "first," "second," and "third" do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. In the present embodiment, for convenience of description, the description of the relative positional relationship of the respective members is described based on the layout pattern of the drawings in the specification, and the positional relationship of, for example, left, right, etc. is determined based on the layout direction of the drawings in the specification.

As shown in fig. 1, a gearless electric drive automobile brake system with a rotor capable of moving axially comprises a motor shell 4, a stator 5, a rotor 11, a transmission sleeve 1, a return spring 2, a magnetic position sensor 14, a stroke controller 15, a rotation-stopping flat key 18 and a limiting blocking piece 19, wherein the motor shell 4 is sleeved outside a brake push rod 9, the brake push rod 9 can axially reciprocate relative to the motor shell 4, the input end of the brake push rod 9 is connected with the output end of an automobile pedal, the output end of the brake push rod 9 is connected with an automobile brake actuating mechanism through a connector 17, and the brake push rod 9 is an existing automobile part and is not separately described again; the motor shell 4 is composed of a central column and an outer sleeve sleeved on the outer side of the central column, the outer sleeve and the central column are cast into an integral structure, the outer sleeve and the central column of the motor shell 4 are the same in length and are arranged coaxially, the central column is arranged in the outer sleeve, two ends of the central column are flush, an annular space is formed between the outer sleeve and the central column, the outer sleeve is connected with one end of the central column in a closed mode, and the other end of the outer sleeve is not connected with the other end of the central column; the central column is provided with a central hole which is communicated with the two ends along the axial direction, the central hole is used for the brake push rod 9 to pass through, and the outer side wall of the central column is a threaded wall surface; the stator 5 and the rotor 11 are both in a cylindrical annular structure, the stator 5 and the rotor 11 are coaxially and concentrically arranged in an annular space formed by the outer sleeve and the central column, the stator 5 is sleeved outside the rotor 11, and the length of the stator 5 is greater than that of the rotor 11, so that the rotor 11 is always in the magnetic field action range of the stator 5 in the whole automobile braking process; the rotor 11 is sleeved on a central column of the motor shell 4, a thread structure matched with the thread wall surface of the central column of the motor shell 4 is arranged on the inner wall of the rotor 11, and the rotor 11 and the central column of the motor shell 4 are assembled together through threads; when the rotor 11 rotates forwards and backwards, the rotor 11 can axially move back and forth along the central column, so that continuous axial thrust is obtained in the gearless transformation process; the rotor 11 is coaxially connected with the transmission sleeve 1 through the transmission bearing 3, and the transmission sleeve 1 is welded on a connector 17 for connecting the brake push rod 9 with the automobile brake actuating mechanism; the power is transmitted to the transmission sleeve 1 through the axial movement of the rotor 11, and then the braking of the automobile is realized. A magnetic position sensor 14 is arranged on the transmission sleeve 1; the magnetic position sensor 14 is a magnetic position sensor commonly used in automobiles, which is not described herein separately as the prior art, the magnetic position sensor 14 is in communication connection with the stroke controller 15, and the magnetic position sensor 14 is used for transmitting a signal detected by the magnetic position sensor to the stroke controller 15; the stroke controller 15 is installed on the outer sleeve of the motor shell 4 through a controller bracket 16, and the stroke controller 15 is used for controlling the rotor 11 of the motor to rotate forwards or backwards; the limiting blocking piece 19 is arranged at one end, close to the transmission sleeve 1, of the motor shell 4 through a third fixing screw 20; the return spring 2 and the rotor 11 are coaxially arranged, the return spring 2 is positioned in the transmission sleeve 1 and sleeved outside a central column of the motor shell 4, one end of the return spring 2 abuts against the transmission sleeve 1, the other end of the return spring 2 abuts against the limiting blocking piece 19, and when the rotor 11 rotates and moves rightwards in the axial direction so as to push the transmission sleeve 1 to move rightwards in the axial direction, the return spring 2 is compressed until the rotor 11 reaches a stroke end position; the flat rotation-stopping key 18 is arranged between the brake push rod 9 and the transmission sleeve 1 and is used for preventing the transmission sleeve 1 from rotating.

As the utility model discloses a preferred mode, the welding has magnetic position sensor 14 on the transmission cover 1, and it is firm to adopt the welding mode installation, ensures that the position is accurate.

A fixing plate 6 is mounted on the end face of the motor housing 4 remote from the end face of the transmission housing 1 by means of fastening screws 10, and the fixing plate 6 is bolted to the vehicle body, thereby fixing the motor housing 4 to the vehicle body.

Be provided with end cover 13 at motor casing 4 tip, and end cover 13 installs at motor casing 4's overcoat and center post not link to make the motor be in the enclosure space, prevent to get into the dust, thereby influence the motor performance, the outward flange of end cover 13 passes through screwed connection with motor casing 4's overcoat.

And one end of the brake push rod 9, which is far away from the automobile brake actuating mechanism, is provided with a limiting stop 7 by using a first fixing screw 8, and the limiting stop 7 is used for limiting the working stroke end position of the brake push rod 9.

The utility model provides a but rotor axial displacement's no gear electric drive car braking system's working process as follows: when the pedal of the automobile is manually stepped on, the thrust force sequentially passes through the brake push rod 9, the transmission sleeve 1 and the connector 17 and moves rightwards, so that the brake actuating mechanism of the automobile is pushed to work, and the brake function is realized. When the pedal of the automobile is manually stepped on to act, the stroke controller 15 acquires an instruction, the motor is started at the same time, the rotor 11 starts to rotate, and the rotor 11 moves axially while rotating due to the threaded fit of the rotor 11 and the central column of the motor shell 4, so that the transmission sleeve 1 and the connector 17 are pushed to act with the pedal force, the automobile brake executing mechanism works, and the brake boosting effect is realized.

When the automobile is automatically braked, the stroke controller 15 receives signals of external radars arranged at the front and the rear of the automobile, immediately prompts the rotor 11 to independently rotate, pushes the transmission sleeve 1 and the connector 17 to move rightwards, and pushes the automobile brake actuating mechanism to work, so that the automatic braking effect is realized.

When the automatic braking action of the electric brake enables the transmission sleeve 1 to move to the end position, the stroke controller 15 obtains a stop instruction so as to cut off the power of the motor, the magnetic position sensor 14 moves leftwards under the action of the return spring 2, the stroke controller 15 gives a motor reverse rotation instruction to control the motor to reversely rotate, and therefore the rotor 11 and the transmission sleeve 1 return to the start position rapidly to prepare for the next braking action. When the manual brake stops at any position, the stroke controller 15 gives an instruction for cutting off the power supply of the motor, so that the electric brake is synchronous with the manual motion.

Claims

1. The utility model provides a but rotor axial displacement's no gear electricity drive car braking system, includes motor casing (4), stator (5) and rotor (11), and brake push rod (9) outside is established to motor casing (4) cover, and brake push rod (9) can be for motor casing (4) axial reciprocating motion, its characterized in that: the motor shell (4) consists of a central column and an outer sleeve sleeved on the outer side of the central column, the outer sleeve and the central column are cast into an integral structure, an annular space is formed between the outer sleeve and the central column, the central column is provided with a central hole which is communicated with the two ends along the axial direction, and the outer side wall of the central column is a threaded wall surface; the stator (5) and the rotor (11) are both in cylindrical annular structures, the stator (5) and the rotor (11) are coaxially and concentrically arranged in an annular space formed by the outer sleeve and the central column, the stator (5) is sleeved outside the rotor (11), and the length of the stator (5) is greater than that of the rotor (11), so that the rotor (11) is always in the magnetic field action range of the stator (5) in the whole automobile braking process; the rotor (11) is sleeved on a central column of the motor shell (4), threads are arranged on the inner wall of the rotor (11), and the rotor (11) and the central column of the motor shell (4) are assembled together through the threads, so that when the rotor rotates forwards and backwards, the rotor (11) can axially move back and forth along the central column, continuous axial thrust is obtained, and braking of an automobile is achieved.

2. A gearless electrically driven vehicle brake system with an axially movable rotor according to claim 1, wherein: the automobile brake device is characterized by further comprising a transmission sleeve (1), a return spring (2), a transmission bearing (3), a magnetic position sensor (14), a stroke controller (15), a rotation-stopping flat key (18) and a limiting blocking piece (19), wherein one side of the transmission sleeve (1) is coaxially connected with the rotor (11) through the transmission bearing (3), and the other side of the transmission sleeve (1) is welded on a connector (17) for connecting the brake push rod (9) with an automobile brake actuating mechanism; the magnetic position sensor (14) is arranged on the transmission sleeve (1), and the magnetic position sensor (14) is in communication connection with the stroke controller (15) and is used for transmitting a signal detected by the magnetic position sensor to the stroke controller (15); the stroke controller (15) is arranged on the outer sleeve of the motor shell (4); the limiting blocking piece (19) is arranged at one end, close to the transmission sleeve (1), of the motor shell (4); the return spring (2) and the rotor (11) are coaxially arranged, the return spring (2) is positioned in the transmission sleeve (1) and sleeved outside a central column of the motor shell (4), one end of the return spring (2) abuts against the transmission sleeve (1), the other end of the return spring (2) abuts against the limiting blocking piece (19), and the return spring (2) is used for returning the rotor (11) so as to release automobile braking; the rotation stopping flat key (18) is arranged between the brake push rod (9) and the transmission sleeve (1) and used for limiting the rotation of the transmission sleeve (1).

3. A gearless electrically driven automotive brake system in which a rotor is axially movable according to claim 1 or 2, characterized in that: the length of an outer sleeve and a central column of the motor shell (4) are the same and are arranged coaxially, the central column is arranged in the outer sleeve, two ends of the central column are flush, the outer sleeve is connected with one end of the central column in a sealed mode, and the other end of the outer sleeve is not connected with the other end of the central column.