WO2023108410A1 - Dispositif de moteur électrique assisté, structure de montage de capteur de position, dispositif de frein et véhicule - Google Patents

Dispositif de moteur électrique assisté, structure de montage de capteur de position, dispositif de frein et véhicule Download PDF

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Publication number
WO2023108410A1
WO2023108410A1 PCT/CN2021/137856 CN2021137856W WO2023108410A1 WO 2023108410 A1 WO2023108410 A1 WO 2023108410A1 CN 2021137856 W CN2021137856 W CN 2021137856W WO 2023108410 A1 WO2023108410 A1 WO 2023108410A1
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WO
WIPO (PCT)
Prior art keywords
housing
sensor
motor
installation
hole
Prior art date
Application number
PCT/CN2021/137856
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English (en)
Chinese (zh)
Inventor
张鑫
卢宇灏
张永生
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202180033696.6A priority Critical patent/CN116601854A/zh
Priority to PCT/CN2021/137856 priority patent/WO2023108410A1/fr
Publication of WO2023108410A1 publication Critical patent/WO2023108410A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa

Definitions

  • the application relates to a booster motor device, a motor position sensor installation structure, a brake device and a vehicle.
  • the braking device has a position sensor for detecting the position (ie, rotation angle) of the rotor of the motor.
  • the position sensor has a sensor housing for accommodating the sensor body, the sensor housing is fixed on the motor, and the motor is fixed on the hydraulic block.
  • a connector is provided on the sensor housing, and the connector passes through the through hole provided on it from one side of the hydraulic block to connect with the control module arranged on the other side of the hydraulic block, so that the electrical connection between the position sensor and the control module can be realized. connect.
  • the control module can detect the position of the motor through the position sensor, and based on this, commutation control and voltage building control of the motor can be realized.
  • the present application provides a power assist motor device, a motor position sensor installation structure, a brake device and a vehicle, which can improve the stability of the motor position detection performance.
  • the first aspect of the present application provides a booster motor device, which is characterized in that it includes: a motor rotor, a motor housing, a motor position sensor and a mounting housing; the motor rotor is housed in the motor housing; the motor housing is mounted on the mounting The housing; the motor position sensor includes a sensor body and a sensor housing; the sensor body is accommodated in the sensor housing; a wiring housing is provided on the sensor housing; a through hole penetrating in the first direction is provided on the installation housing; The wiring housing passes through the through hole; the sensor housing is provided with a first positioning part; the installation housing is provided with a second positioning part, and the first positioning part cooperates with the second positioning part so that Positioning, the second direction is perpendicular to the first direction.
  • the positioning can be performed by the first positioning part, improving the The position accuracy of the sensor housing and the wiring housing arranged on it relative to the installation housing, to avoid cracking caused by the wiring housing, for example, hitting the installation housing, etc., thereby adversely affecting the electrical connection of the power line and/or signal line, Alternatively, problems such as reduction in the accuracy of the electrical connection between the wiring housing and the electrical connection object (such as a control module described later) can be avoided, thereby improving the stability of the motor position detection performance.
  • the wiring housing cooperates with the through hole so as to be positioned in the second direction.
  • the wiring housing can also be used to position the sensor housing relative to the mounting housing, so that the number of positioning parts can be reduced and the structure can be simplified.
  • a first sealing member is provided between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole.
  • the sealing member seals the gap between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole to prevent dust, oil, etc. from intruding into the control module from the motor side.
  • the sealing member fills the gap between the connection case and the through hole, so that the connection case and the through hole can be well positioned.
  • a second sealing component is provided between the first surface of the wiring housing and the third surface of the installation housing, and the first surface and the third surface face each other in the first direction right.
  • the power assist motor device further includes a control module, the control module is installed on the installation housing, and the wiring housing is connected between the sensor housing and the control module. That is, one end of the wiring housing is connected to the sensor housing, and the other end is connected to the control module through the through hole.
  • one of the first positioning portion or the second positioning portion includes a protrusion, and the other includes a hole.
  • the sensor housing is clamped by the motor housing and the installation housing in the first direction.
  • the sensor housing is clamped by the motor housing and the installation housing, so that the sensor housing is fixed on the installation housing in the first direction. In this way, it is not necessary to set up a special fixing mechanism, and the structure can be simplified . In addition, the technical effect that the sensor housing can be repeatedly used can also be obtained by repeatedly installing and dismounting.
  • a first groove is provided on the second surface of the motor casing, the second surface faces the installation casing, and the sensor casing is connected by the bottom surface of the first groove and the installation casing. clamping.
  • the sensor housing is clamped by the motor housing and the installation housing, so that the sensor housing is fixed on the installation housing in the first direction. In this way, it is not necessary to set up a special fixing mechanism, and the structure can be simplified . In addition, the technical effect that the sensor housing can be repeatedly used can also be obtained by repeatedly installing and dismounting.
  • the power assist motor device further includes a sensor rotor; the sensor rotor is fixed on the motor rotor and is arranged at a distance from the sensor housing.
  • the sensor rotor and the sensor housing are arranged at intervals, that is to say, the motor position sensor is a non-contact sensor, so even if the sensor housing and the sensor body installed on it are in a position relative to the sensor rotor during assembly
  • software calibration can be used to eliminate or reduce the adverse effect of the error on the detection performance, so that the stability and reliability of the detection performance can be reliably improved as a whole.
  • the sensor body is sealed in the sensor housing.
  • the sensor body can be prevented from being subjected to chemical corrosion and the like.
  • the sensor housing includes a main body shell and a cover plate; the main body shell is provided with a second groove, and the sensor body is accommodated in the second groove; the cover plate seals the second groove opening.
  • the wiring housing and the first positioning portion are arranged on the first surface of the sensor housing, and the first surface faces the installation housing.
  • the second aspect of the present application provides a motor position sensor installation structure, including a sensor housing and an installation housing; a wiring housing is provided on the sensor housing; a through hole penetrating in the first direction is provided on the installation housing ; the wiring housing passes through the through hole; a first positioning part is provided on the sensor housing; a second positioning part is provided on the installation housing, and the first positioning part cooperates with the second positioning part so that the Phase orientation, the second direction is perpendicular to the first direction.
  • a first positioning part is provided on the sensor housing
  • a second positioning part is provided on the installation housing
  • the first positioning part cooperates with the second positioning part to be positioned in the second direction.
  • the sensor housing and the installation housing have a direct positioning relationship, which can reduce the adverse effects of the installation error between the sensor housing and the motor on the positional relationship between the sensor housing and the installation housing, and improve the wiring of the sensor housing.
  • it can also improve the docking accuracy of the wiring housing and the control module, so that the electrical connection between the two is stable and reliable. Therefore, the stability and reliability of the motor position detection performance realized by the control module through the motor position sensor are improved.
  • the wiring housing cooperates with the through hole so as to be positioned in the second direction.
  • the wiring housing can also be used to position the sensor housing relative to the mounting housing, so that the number of positioning parts can be reduced and the structure can be simplified.
  • a first sealing member is provided between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole.
  • the sealing member seals the gap between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole to prevent dust, oil, etc. from intruding into the control module from the motor side.
  • the sealing member fills the gap between the connection case and the through hole, so that the connection case and the through hole can be well positioned.
  • a second sealing component is provided between the first surface of the wiring housing and the third surface of the installation housing, and the first surface and the third surface face each other in the first direction right.
  • control module is installed on the installation housing, and the wiring housing is connected between the sensor housing and the control module. That is, one end of the wiring housing is connected to the sensor housing, and the other end is connected to the control module through the through hole.
  • one of the first positioning portion or the second positioning portion includes a protrusion, and the other includes a hole.
  • a motor housing is further included, and the sensor housing is clamped by the motor housing and the installation housing in the first direction.
  • the sensor housing is clamped by the motor housing and the installation housing, so that the sensor housing is fixed on the installation housing in the first direction. In this way, it is not necessary to set up a special fixing mechanism, and the structure can be simplified . In addition, the technical effect that the sensor housing can be repeatedly used can also be obtained by repeatedly installing and dismounting.
  • a first groove is provided on the second surface of the motor casing, the second surface faces the installation casing, and the sensor casing is connected by the bottom surface of the first groove and the installation casing. clamping.
  • the sensor housing is accommodated in the first groove, which can properly reduce the volume of the overall structure and is beneficial to miniaturization.
  • the sensor housing can be covered by the motor housing, thereby protecting the motor position sensor from water and dust.
  • the motor rotor and the sensor rotor are further included; the sensor rotor is fixed on the motor rotor and arranged at a distance from the sensor housing.
  • the sensor rotor is a metal stamping part, and the connecting part is cylindrical with equal diameter.
  • the sensor rotor and the sensor housing are arranged at intervals, that is to say, the motor position sensor is a non-contact sensor, so even if the sensor housing and the sensor body installed on it are in a position relative to the sensor rotor during assembly
  • software calibration can be used to eliminate or reduce the adverse effect of the error on the detection performance, so that the stability and reliability of the detection performance can be reliably improved as a whole.
  • a sensor body is sealed in the sensor housing.
  • the sensor body can be prevented from being subjected to chemical corrosion and the like.
  • the sensor housing includes a main body shell and a cover plate; the main body shell is provided with a second groove, and the sensor body is accommodated in the second groove; the cover plate seals the second groove opening.
  • the wiring housing and the first positioning portion are arranged on a first surface of the sensor housing, and the first surface faces the installation housing.
  • the third aspect of the present application provides a motor position sensor installation structure, including a sensor housing and a mounting housing; a wiring housing is provided on the sensor housing; a through hole penetrating in the first direction is provided on the mounting housing ; the wiring housing passes through the through hole; the sensor housing side has a first surface, the installation housing side has a third surface, and the first surface and the third surface face each other in a first direction; the first surface and the third surface A second sealing component is provided between the surfaces, and the second sealing component is clamped in the first direction.
  • the sealing member since the sealing member is clamped between the first surface and the third surface in the first direction, it is not necessary to clamp the sealing member in the second direction perpendicular to the first direction, for example, the wiring housing can be made There is a large gap between the outer peripheral surface of the through hole and the inner peripheral surface of the through hole. Therefore, even if a certain position error occurs between the wiring housing and the through hole during installation, it can also prevent the interference between the wiring housing and the through hole and cause wiring The casing is cracked, etc.
  • a gap is provided between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole.
  • the third aspect also includes a motor housing, a third positioning part is provided on the motor housing; a fourth positioning part is provided on the sensor housing, and the third positioning part is connected to the first positioning part.
  • the four positioning parts cooperate to position the sensor housing and the motor housing in the second direction, and the second direction is perpendicular to the first direction.
  • one of the third positioning portion and the fourth positioning portion includes a protrusion, and the other includes a groove.
  • the fourth positioning portion includes a plurality of first protrusions disposed on the outer peripheral surface of the sensor housing; and a plurality of second protrusions are disposed on the outer peripheral surface of the first protrusions.
  • a control module is disposed on the installation housing, and the wiring housing is connected between the sensor housing and the control module.
  • the sensor housing and the motor housing can be more easily coaxial.
  • the fourth aspect of the present application provides a braking device, including any form of motor position sensor installation structure described in the second aspect.
  • the fifth aspect of the present application provides a vehicle, including any form of power-assisted motor device described in the first aspect, any form of motor position sensor installation structure described in the second aspect, or any form described in the second aspect brake device.
  • a motor position sensor installation method including: passing the terminal set on the sensor housing through the through hole on the installation housing, and making the first positioning part on the sensor housing and the first positioning part on the installation housing Cooperate with the second positioning part, so that the sensor housing is positioned in the second direction relative to the installation housing; in the state of positioning, the motor housing is installed on the installation housing, so that the sensor housing is positioned by the motor
  • the motor housing and the installation housing are clamped in a first direction, and the first direction is perpendicular to the second direction, or the sensor housing is fixedly installed on the installation housing through a screw connection.
  • the method for installing the motor position sensor further includes: installing the control module on the installation housing.
  • the third to sixth aspects of the present application can obtain the same technical effect as that of the first aspect, and the description will not be repeated here.
  • Fig. 1 is a schematic diagram of a vehicle to which the booster motor device of the embodiment of the present application is applied;
  • Fig. 2 is a schematic cross-sectional view of a booster motor device according to an embodiment of the present application
  • Fig. 3 is a partial enlarged view of place A in Fig. 2;
  • Fig. 4 is a schematic diagram of an exploded structure of a booster motor device according to an embodiment of the present application.
  • Fig. 5 is a schematic diagram of an exploded structure of a guide member and a piston in an embodiment of the present application
  • Fig. 6 is a schematic perspective view of an installation housing in an embodiment of the present application.
  • Fig. 7 is a schematic diagram of an exploded structure of a motor position sensor in an embodiment of the present application.
  • Fig. 8 is a schematic cross-sectional view of a booster motor device according to another embodiment of the present application.
  • Fig. 9 is a partial enlarged view of place C in Fig. 8;
  • Fig. 10 is a schematic cross-sectional view of a booster motor device provided in another embodiment of the present application.
  • Fig. 11 is a schematic perspective view of the installation housing in the embodiment shown in Fig. 10;
  • Fig. 12 is a schematic diagram of an exploded structure of the motor and the sensor housing in the embodiment shown in Fig. 10 .
  • 35 wiring housing; 35a, groove; 36, sealing member (first sealing member); 38, sealing member (second sealing member);
  • Control module 51. Housing of the control module; 52. Control substrate;
  • Piston guide part 61. Body part of piston guide part; 61a, through hole; 61b, rib; 62, installation part; 62a, through hole; 63, threaded connector;
  • booster motor device 100, booster motor device; 100A, booster motor device; 100B, booster motor device; 101, brake device; 210, car body; 220, wheel; 231, wheel brake; 232, brake pedal; 233, brake oil pipe; 300, vehicle; X1, axis
  • Fig. 1 is a schematic diagram of a vehicle to which the power assist motor device according to the embodiment of the present application is applied.
  • this vehicle 300 has a vehicle body 210 on which four wheels 220 are attached.
  • a wheel brake 231 is provided corresponding to each wheel 220 , and the wheel brake 231 may be a drum brake or a disc brake, and is used to brake the wheel 220 to slow down or stop the vehicle 300 .
  • the vehicle 300 further includes a brake pedal 232 and a brake device 101 as an example of a booster motor device.
  • the brake pedal 232 is pivotally supported on the vehicle body 210 for a driver (not shown) to step on.
  • the brake device 101 is installed near the brake pedal 232, and the action of the brake pedal 232 can be detected by a pedal displacement sensor or the like.
  • the brake device 101 is respectively connected to four wheel brakes 231 (specifically, brake wheel cylinders, not shown) through brake oil pipes 233, so as to provide hydraulic pressure to the wheel brakes 231, so that the wheel brakes 231 perform braking. move.
  • the brake device 101 is only briefly and schematically shown, and its specific structure is not drawn.
  • the booster motor device 100 When the driver depresses the brake pedal 232, or when the booster motor device 100 receives a braking instruction from the automatic driving control unit, the booster motor device 100 generates brake hydraulic pressure, and the hydraulic pressure is transmitted through the brake oil pipe 233 The information is transmitted to the wheel brake 231 so that the wheel brake 231 brakes the wheel 220 .
  • the braking device has a motor, a hydraulic block and a control module.
  • the electric motor is used to drive the hydraulic pump to be able to generate hydraulic pressure.
  • An oil circuit is provided on the hydraulic block to transmit hydraulic pressure to the wheel brakes.
  • the control module is used to control the action of the motor, etc.
  • a motor position sensor is also provided for the motor, and the motor position sensor is used to detect the rotational position of the rotor of the motor, so that the control module can realize commutation control and voltage building control of the motor based on this.
  • the motor position sensor has a sensor housing that accommodates the sensor body, the sensor housing is fixed on the motor by buckles, and the sensor housing is assembled on the hydraulic block together with the motor.
  • a terminal is provided on the sensor housing, and the terminal passes through the through hole on the hydraulic block to electrically connect the connector on the terminal to the control module, so that the control module is electrically connected to the motor position sensor.
  • the buckle installation is easy to deform and the fixing strength is weak, which is not conducive to the durability and stability of the sensor during vibration; the arrangement of the buckle increases the volume of the sensor, which is not conducive to the miniaturization of the whole machine structure; the buckle is easily damaged when disassembled, Lead to low sensor reuse rate.
  • the embodiments of the present application provide a motor position sensor installation structure and a power assist motor device, a brake device, a vehicle, etc. having the installation structure, which can improve the stability of the motor position detection performance.
  • Fig. 2 is a schematic cross-sectional view of a booster motor device according to an embodiment of the present application
  • Fig. 3 is a partial enlarged view of A in Fig. 2
  • Fig. 4 is a schematic diagram of an exploded structure of a booster motor device according to an embodiment of the present application .
  • the booster motor device 100 in this embodiment has a motor 1 , an installation housing 2 , a motor position sensor 3 , a piston 41 , a control module 5 , and a piston guide member 6 . Since it is applied to brake control, and structures such as the piston 41 are integrated thereon, the booster motor device in this embodiment can also be called a brake device, and in this embodiment it is an electronic hydraulic brake device.
  • the motor 1 can drive the piston 41 to move back and forth under the control of the control module 5 .
  • a piston hole 2 a is provided in the mounting case 2 , and the piston 41 is disposed in the piston hole 2 a.
  • the corresponding hydraulic pressure is generated by the movement of the piston 41 in the piston hole 2a, and the hydraulic pressure is transmitted to the wheel brake through an oil passage (not shown), so that a braking operation can be performed.
  • the booster motor device 100 may also include common structural elements such as a liquid storage tank.
  • the motor 1 includes a motor housing 11 and a hollow rotor 12 .
  • the motor case 11 is fixedly mounted on the mounting case 2 by screws not shown in the figure.
  • a hole 11 a is provided in the motor housing 11
  • the rotor 12 is mounted in the hole 11 a of the motor housing 11 through a screw 42 , and can rotate around an axis X1 extending in the vertical direction in the figure.
  • the motor 1 also includes an unillustrated stator.
  • a groove 11d is formed on the lower surface 11f of the motor case 11 in FIG.
  • the body 2 holds the edge portion of the main body case 33 in the direction of the axis X1.
  • the surface 11 f of the motor case 11 is a surface facing the mounting case 2 .
  • a hole 11a, a housing chamber 11b, and a housing chamber 11c are provided on the motor housing 11.
  • the hole 11a, the housing chamber 11b, and the housing chamber 11c are sequentially connected, and the diameters become larger in turn, forming a stepped hole shape as a whole.
  • the hole 11a has an opening on the surface 11e on the upper side in FIG.
  • the receiving cavity 11c is formed on the bottom surface of the groove 11d.
  • the accommodating chamber 11 c accommodates another part of the main body case 33 , the cover plate 34 , and a part of the sensor rotor 31 (specifically, the blade 31 b , FIG. 7 ), which will be described later.
  • the motor 1 has a power cord 13 which is electrically connected to the control module 5 through a through hole 2 c which will be described later in the mounting case 2 .
  • FIG. 6 is a schematic perspective view of the installation housing 2 in an embodiment of the present application.
  • the installation housing 2 can also be called a hydraulic block, and a piston hole 2a is arranged on it, and the piston hole 2a is a through hole.
  • the upper side protrudes into the piston hole 2a to be disposed in the piston hole 2a.
  • a piston cylinder liner 21 is installed on the installation housing 2, and the inner space of the piston cylinder liner 21 communicates with the lower opening in Figure 2 of the piston hole 2a, and the piston cylinder liner 21 and the piston hole 2a together A chamber for accommodating the piston 41 is formed.
  • the piston 41 can linearly reciprocate and slide in the chamber along the axis X1, so as to push the oil in the chamber to generate a corresponding hydraulic force.
  • the piston 41 , the piston-cylinder liner 21 and the installation housing 2 constitute a plunger type hydraulic pump.
  • a plurality of oil passages can also be provided on the installation shell 2, and these oil passages are connected with the brake master cylinder and the wheel brakes, and can transmit the hydraulic pressure to the wheel brakes to realize braking and adjustment of the braking pressure.
  • a plurality of valve holes can also be provided on the installation housing 2, and valves are installed in the valve holes, and these valves are used to control the on-off of the oil passage and the flow of the liquid in the oil passage.
  • the piston 41 is disposed in the piston hole 2a of the installation housing 2, however, as other embodiments, the piston 41 may not be disposed on the installation housing 2, but disposed in another housing. superior.
  • a plunger-type pump structure is used to generate hydraulic pressure, however, other pump structures may also be used.
  • the installation housing 2 is a hydraulic block, however, the present application is not limited thereto, for example, the installation housing 2 may also be a pneumatic block, the piston 41 and the installation housing 2 constitute a pneumatic pump, and the installation housing 2
  • the air circuit provided on the body 2 transmits the braking pressure to the wheel brakes.
  • a hole 2 b , a through hole 2 c and a through hole 2 d are also provided on the mounting case 2 .
  • the threaded connection member 63 is a screw.
  • the threaded connection member 63 may also be a bolt or a nut.
  • the power cord 13 of the power supply machine 1 passes through the through hole 2c.
  • the axis of the through hole 2d is parallel to the axis X1, that is to say, the through hole 2d penetrates the installation housing 2 in the vertical direction in FIG. 2 .
  • the through hole 2 d allows a terminal case 35 to be described later to pass through so as to be electrically connected to the control module 5 .
  • a positioning portion 2e is provided on the mounting case 2, and in this embodiment, the positioning portion 2e is a hole and is a blind hole.
  • the positioning portion 2 e engages or cooperates with a positioning portion 33 a formed as a protrusion on the main body case 33 described later, so that the main body case 33 can be positioned on the installation case 2 .
  • the positioning portion 2e may also be a protrusion, and correspondingly, the positioning portion 33a is formed as a hole.
  • Fig. 7 is a schematic diagram of an exploded structure of a motor position sensor in an embodiment of the present application.
  • the motor position sensor 3 is a non-contact sensor, including a sensor housing 30 , a sensor rotor 31 , a sensor body 32 and a wiring housing 35 .
  • the sensor housing 30 is used to install the sensor body 32, including a main body housing 33 and a cover plate 34.
  • a groove 33d is provided on the surface of the upper side of the main body housing 33 in FIG. 2 and FIG. 3, and the sensor body 32 is accommodated in the groove 33d.
  • the cover plate 34 is sealed and installed on the main body shell 33, and closes the opening of the groove 33d from above in FIG.
  • laser welding or sealant sealing can be adopted.
  • a sealing ring may be provided between the main body case 33 and the cover plate 34 .
  • the cover plate 34 can also be omitted, and resin material is potted in the groove 33 d of the main body shell 33 to realize the sealing of the sensor body 32 .
  • a positioning portion 33 a is provided on the surface 33 e of the main body shell 33 facing the installation housing 2 , and in this embodiment, the positioning portion 33 a is a protrusion. As another embodiment, the positioning portion may also be a hole. In this embodiment, the surface 33e is a single plane, but the application is not limited thereto, for example, it may be a stepped plane.
  • a groove 33f for accommodating a mounting portion 62 of the piston guide member 6 to be described later is provided on the surface 33e of the main body case 33 .
  • a through hole 33c is provided on the main body case 33, and the power cord 13 of the electric machine 1 passes through the through hole 33c.
  • the main body case 33 of the sensor case 30 is accommodated in the groove 11d on the motor case 11 of the motor 1, and the edge of the main body case 33 is fixed by the bottom surface of the groove 11d and the The upper surface 2g in FIG. 2 of the housing 2 is sandwiched so that the main body housing 33 and the mounting housing 2 are positioned in the direction of the axis X1.
  • the inner diameter of the groove 11d is greater than the outer diameter of the main body casing 33, thereby leaving a gap between the two, so that even if the main body casing 33 is in the direction perpendicular to the axis X1 and the motor casing 11 produces a slight positional error, which can prevent the sensor housing 30 from interfering with the motor housing 11 in the radial direction, and avoid affecting the assembly of the motor housing 11 and the fixing of the motor housing 11 to the main body housing 33 .
  • the sensor rotor 31 is fixedly installed on the rotor 12 of the motor 1 and rotates integrally with the rotor 12 around the axis X1.
  • the sensor rotor 31 includes a connection portion 31a and a plurality of blades 31b.
  • the connecting portion 31 a is cylindrical in shape with an equal diameter, and one end thereof is fixedly connected to the rotor 12 of the motor 1 .
  • the blades 31b protrude from the other end portion of the connecting portion 31a toward the outer peripheral side, gaps are formed between the plurality of blades 31b, and the plurality of blades 31b are arranged at equal intervals in the circumferential direction.
  • the number of blades 31b is not particularly limited, and it is 5 in this embodiment, but it may also be other numbers, such as 4 or 6. In addition, the intervals between the plurality of blades 31b may not be equal.
  • the sensor rotor 31 is a component independent of the rotor 12 of the motor 1 , however, the sensor rotor may be integrally formed on the rotor 12 .
  • the sensor body 32 can also be called an inductive circuit board, which is located directly below the sensor rotor 31 in FIG. configuration. More specifically, a distance is maintained between the sensor rotor 31 and the cover plate 34 above the sensor body 32 or between the housing 30 .
  • the height of the air gap between the vane 31b and the sensor body 32 can be ensured, thereby improving the stability of the sensor accuracy.
  • the sensor body 32 is provided with an unillustrated excitation coil, an induction coil, and a signal processing element 32a. Based on the principle of electric induction, the excitation coil emits a high-frequency alternating electromagnetic field during operation, causing eddy currents to be generated inside the rotor. The induction coil receives the alternating electromagnetic field emitted by the eddy current, and the position of the rotor can be judged after calculation.
  • the structure of the motor position sensor 3 is not limited thereto.
  • the sensor rotor 31 may also be made of magnetic material.
  • the motor position sensor 3 can also be formed in the form of a photosensitive sensor.
  • the sensor body 32 is electrically connected to the power line and/or the signal line in the wiring housing 35 .
  • the electrical connection method can be in various forms such as terminal soldering, fisheye pin plugging or flexible circuit board connection.
  • the wiring housing 35 can also be referred to as a terminal, and a power line and/or a signal line (not shown) are arranged inside it, and the power line and/or signal line are electrically connected with the sensor body 32, specifically with the sensor body
  • the electronic control unit and/or power device on 32 are electrically connected.
  • the wiring case 35 is provided on the lower surface 33 e of the main body case 33 in FIG. 2 , and extends from the main body case 33 to the lower side in FIG.
  • the wiring housing 35 passes through the through hole 2 d on the installation housing 2 downward from the upper side in FIG. 2 .
  • a connector is provided at the end of the lower side of the wiring housing 35 in FIG.
  • the power line and/or signal line held by the body 35 is electrically connected to the control substrate 52 , and can be powered by the control substrate 52 and can perform signal transmission with the control substrate 52 .
  • the connector can be a component in the form of a connector, or a component in the form of a spring contact or a metal contact.
  • the wiring housing 35 is made of plastic, and can be integrally formed on the main body shell 33 , or can be installed on the main body shell 33 as a component independent of the main body shell 33 .
  • an annular groove 35a is provided on the outer peripheral surface of the wiring housing 35, and a sealing member 36 is arranged in the groove 35a, and the sealing member 36 is a sealing ring.
  • the sealing member 36 is a sealing ring. Made of rubber.
  • the gap between the wiring housing 35 and the through hole 2d can also be filled by the sealing member 36, so that the wiring housing 35 and the through hole 2d are relatively fixed in a direction perpendicular to the axis X1, that is, the main body housing 33 is well Positioned on the mounting shell 2.
  • the positioning portion 33 a formed as a protrusion is provided on the surface 33 e of the main body case 33 , and the positioning portion 33 a is fitted into the positioning portion 2 e formed as a hole on the mounting case 2 . , engage with the positioning portion 2e, and the two cannot move relative to each other in a direction along the surface 33e of the main body shell 33 (ie, a direction perpendicular to the axis X1).
  • the wiring housing 35 is engaged with the through hole 2d of the installation housing 2, and the two cannot be formed in the direction along the surface 33e of the main body housing 33 (ie, the direction perpendicular to the axis X1). relatively mobile. That is, the wiring housing 35 and the mounting housing 2 perform the same positioning functions as the positioning portion 33a and the positioning portion 2e.
  • the main body housing 33 (or the sensor housing 30) is positioned relative to the installation housing 2, and the axis X1 is the center of the circumference and the radial direction, that is, in the direction perpendicular to the axis X1, it cannot move relative to the installation shell 2, nor can it produce other axes with the axis X1 or parallel to the axis X1 relative to the installation shell 2.
  • the relative rotation of the center is the center of the circumference and the radial direction, that is, in the direction perpendicular to the axis X1, it cannot move relative to the installation shell 2, nor can it produce other axes with the axis X1 or parallel to the axis X1 relative to the installation shell 2.
  • a through hole 31c is provided on the sensor rotor 31
  • a through hole 34a is provided on the cover plate 34
  • a through hole 32b is provided on the sensor body 32
  • a through hole is provided on the main body case 33. 33b.
  • the piston 41 is connected with the screw rod 42 .
  • the screw 42 is inserted into the hole 11 a and is attached to the motor case 11 .
  • the screw 42 is fixed to the rotor 12 and rotates integrally with the rotor 12 about the axis X1 .
  • the screw rod 42 can be regarded as the output shaft of the motor 1 .
  • the piston 41 is cylindrical as a whole, and is connected with the screw rod 42 through a threaded structure or a ball screw structure, so that when the screw rod 42 rotates, the piston 41 is made to move along the axial direction (it can be understood that the axial direction is the same as the axis X1). same direction) to move in a straight line.
  • a plurality of locking grooves 41 a extending in the axial direction are provided on the outer peripheral surface of the piston 41 for engaging with ribs 61 b on the piston guide member 6 described later.
  • the piston guide member 6 includes a body portion 61 and a mounting portion 62 .
  • the main body portion 61 is substantially cylindrical, and has a through hole 61a, and a plurality of ribs 61b extending in the axial direction are provided on the inner peripheral surface of the through hole 61a.
  • these ribs 61b are respectively engaged with a plurality of engaging grooves 41a on the piston 41, so that the relative movement between the piston 41 and the piston guide member 6 along the axial direction can be produced but not relative rotation can be produced. In this way, under the guidance of the piston guide member 6 , the piston 41 can reliably move linearly along its axial direction.
  • the mounting portion 62 is in the shape of a flange extending from the lower end in FIG.
  • a plurality of threaded connectors 63 are fixedly installed on the installation housing 2 .
  • the threaded connector 63 is a screw. It can be understood that, as shown in FIG. 5 , a plurality of through holes 62 a through which the threaded connectors 63 pass are provided on the mounting portion 62 .
  • the installation shell 2 is provided with a plurality of threaded holes (not marked) for screwing in the threaded connectors 63 .
  • a groove 33f is provided on the surface 33e of the main body shell 33 facing the installation housing 2, and the mounting portion 62 of the piston guide member 6 is accommodated in the groove 33f, so that , the size of the assist motor device 100 in the direction of the axis X1 can be reduced, contributing to miniaturization. Meanwhile, the groove 33f constitutes a evacuation portion of the evacuation mounting portion 62 .
  • the inner diameter and depth of the groove 33f are slightly larger than the installation portion 62, so that the distance between the installation portion 62 and the groove 33f is in the direction of the axis X1 and perpendicular to the axis X1. There is a gap in all directions, so that the interference between the main body shell 33 and the installation part 62 can be reliably avoided.
  • control module 5 is located at the bottom of the installation housing 2 in FIG. 2 , that is, it is disposed on the side of the installation housing 2 opposite to the side where the sensor housing 30 is disposed.
  • the control module 5 includes a housing 51 and a control substrate 52 .
  • the casing 51 is hermetically installed on the mounting casing 2 to protect the control substrate 52 inside the device from contamination and the like.
  • the control substrate 52 may also be called a printed circuit board, and is housed in the casing 51, on which an electronic control unit (Electronic Control Unit, ECU) and/or power devices, etc. are arranged, and the replacement of the motor 1 can be realized through the electronic control unit.
  • ECU Electronic Control Unit
  • power supply control and the like can be realized through the power device.
  • the control module 5 sends a signal to the motor 1 to make the rotor 12 of the motor 1 rotate in one direction.
  • the screw 42 fixed on the rotor 12 also rotates, and the piston 41 moves along the axis X1 in one direction (for example, the bottom in FIG. 2 ) through the threaded structure or the ball screw structure.
  • control module 5 can detect the rotational position of the rotor 12 through the motor position sensor 3 , thereby obtaining the moving position of the piston 41 .
  • control module 5 can send a signal to the motor 1 to make the rotor 12 of the motor 1 reversely rotate in another direction, so that the piston 41 returns.
  • the motor 1 drives the piston 41 to perform reciprocating motion.
  • the sensor rotor 31 can be fixed on the rotor 12 of the motor 1, and then or in parallel with this, the sensor housing 30 with the sensor body 32 installed is positioned or pre-assembled.
  • the mounting case 2 specifically, the positioning portion 33a is inserted into the positioning portion 2e, and the wiring case 35 is passed through the through hole 2d, so that the sensor case 30 is relative to the mounting case in a direction perpendicular to the axis X1.
  • Body 2 is fixed.
  • control module 5 is pre-installed on the installation shell 2, after the wiring shell 35 passes through the through hole 2d, the connector at its end will be connected with the connector on the control substrate 52 to realize the connection of the sensor body 32. Electrical connection to the control substrate 52 .
  • the motor housing 11 of the motor 1 is arranged on the installation housing 2, so that the main body housing 33 of the sensor housing 30 is covered by the motor housing 11 and the installation housing.
  • Body 2 clamps.
  • the motor casing 11 is fixed on the installation casing 2 by screws not shown in the figure, thereby realizing that the motor 1 is fixedly installed on the installation casing 2, and the main body casing 33 and the casing are connected by the motor casing 11 at the same time.
  • the body 30 is fastened to the mounting housing 2 in the direction of the axis X1.
  • control module 5 can be installed on the installation housing 2, and at the same time realize the docking of the control substrate 52 and the wiring housing 35 to realize control The electrical connection of the substrate 52 to the sensor body 32 .
  • the sensor housing 30 can be positioned by the engagement of the positioning part 33a and the positioning part 2e.
  • the mounting shell 2 is relatively fixed with the mounting shell 2 in a direction perpendicular to the axis X1.
  • the sensor housing 30 is directly positioned on the installation housing 2, thereby being connected with the motor housing 11 of the motor 1 indirectly.
  • the installation error between the sensor housing 30 and the motor housing 11 is avoided. It is the adverse effect brought by the position accuracy of the control substrate 52), thereby improving the docking accuracy of the wiring housing 35 and the control module 5, making the electrical connection stable and reliable, and improving the stability and reliability of the detection performance of the motor position sensor 3 .
  • the reliability of mass production can be improved.
  • the main body shell 33 has an installation error with respect to the motor housing 11 of the motor 1, that is, when a certain installation error occurs between the sensor body 32 and the sensor rotor 31 fixed on the motor 1, when assembling In the calibration process after completion, the impact of the error on the detection performance of the motor position sensor 3 can be eliminated by means of software calibration. Therefore, even if an assembly error occurs on the side of the sensor housing 30 relative to the side of the motor 1 , the error will not substantially degrade the detection performance of the motor position sensor 3 .
  • the stability and reliability of the detection performance of the motor position sensor 3 can be reliably and reliably improved as a whole.
  • the number of positioning parts 33a may be one or more.
  • engaging the wiring housing 35 with the through hole 2d on the installation housing 2 also plays a positioning role.
  • the number of positioning parts 33a may be set to one, and of course, may be set to a plurality.
  • the wiring housing 35 can not actually play a positioning role.
  • the size of the through hole 2d can be formed larger to make the wiring housing 35 loose. is inserted into the through hole 2d.
  • the main body case 33 of the sensor case 30 is clamped by the motor case 11 and the installation case 2 , so that the main body case 33 is relatively fixed to the installation case 2 in the direction of the axis X1. In this way, there is no need to additionally provide a mechanism for fixing the main body shell 33 on the installation shell 2 , which simplifies the structure of the booster motor device 100 .
  • the assembly and disassembly can be repeated many times, and the main body shell 33 and the like can be reused at least once.
  • the fixing strength is high, which is beneficial to resisting mechanical vibration and maintaining a good fixing strength in a high temperature environment, so that the structure can be maintained. Stable and stable performance of motor position sensor 3.
  • the motor housing 11 is provided with a groove 11d, and the outer periphery of the main body housing 33 is surrounded by the groove 11d, so that the main body housing 33 is not exposed, and the motor position sensor 3 is controlled by the motor housing 11.
  • Protective functions such as waterproof and dustproof are achieved, and the sensor body 32 is prevented from being corroded.
  • the groove 11d can also be omitted, and the main body shell 33 is directly clamped by the surface 11f of the motor housing 11 and the surface 2g of the installation housing 2 .
  • a groove with the same function can also be provided on the housing 2 .
  • the main body housing 33 is provided with a groove 33f, so that the installation part 62 of the piston guide member 6 is accommodated in the groove 33f, so that the size of the booster motor device 100 in the direction of the axis X1 can be reduced. contribute to miniaturization.
  • Fig. 8 is a schematic cross-sectional view of a booster motor device according to another embodiment of the present application.
  • Fig. 9 is a partial enlarged view of point C in Fig. 8 .
  • the main difference between the booster motor device 100A in this embodiment and the booster motor device 100 in the above-mentioned embodiment is that in the above-mentioned embodiment, the main body casing 33 passes through the motor casing of the motor 1 11 and the mounting shell 2 are clamped and relatively fixed on the mounting shell 2 in the direction of the axis X1, and in this embodiment, the main body shell 33 is fixed on the mounting shell 2 through a threaded connection 37 .
  • the main body shell 33 is provided with a plurality of through holes 33g (only one is drawn in the figure), and the installation housing 2 is provided with a plurality of threaded holes 2f (only one is drawn in the figure), through which The threaded connector 37 is passed through the through hole 33g and screwed into the threaded hole 2f, thereby fixing the main body shell 33 on the installation shell 2 .
  • the assembly and disassembly can be repeated many times, and the main body shell 33 can be reused at least once.
  • the threaded connection 37 is a screw.
  • the threaded connection member 63 may also be a bolt or a nut.
  • Fig. 10 is a schematic cross-sectional view of a booster motor device provided by another embodiment of the present application.
  • Fig. 11 is a schematic perspective view of the installation shell in this embodiment.
  • Fig. 12 is a schematic diagram of an exploded structure of the motor and the sensor housing in this embodiment.
  • the difference between this embodiment and the embodiment shown in FIG. 2 includes, as shown in FIG. 12 , in the booster motor device 100B, a positioning part 11g is provided on the motor housing 11, and a positioning part 11g is provided on the main body shell 33. Part 33i, the positioning part 33i cooperates with the positioning part 11g, so that the main body casing 33 can be preliminarily positioned on the motor casing 11 in the radial and circumferential directions.
  • the positioning portion 11g is a groove formed on the surface 11f of the main body shell 33 of the motor housing 11 facing the sensor housing 30; the positioning portion 33i is a protrusion formed on the outer peripheral surface 33h of the main body shell 33 superior. It can be understood that the positioning portion 11g and the positioning portion 33i can also adopt other structures, for example, a protrusion is provided on the surface 11f, and a groove is provided on the surface of the main body shell 33 facing the motor housing 11 or on the outer peripheral surface 33h.
  • the main body housing 33 is clamped by the bottom surface of the positioning portion 11 g and the installation housing 2 , thereby being fixed in the axial direction of the screw rod 42 .
  • each of the positioning part 33i and the positioning part 11g may be one or plural.
  • the number of each of the positioning part 33i and the positioning part 11g may be one or plural.
  • FIG. 12 three are illustrated. Specifically, the three positioning parts 33i are arranged at intervals in the circumferential direction centered on the central axis of the main body casing 33 (that is, the axis X1), and the three positioning parts 11g are arranged at intervals in the electrical direction.
  • the casing 11 is arranged at intervals in the circumferential direction centered on the central axis (namely, the axis X1).
  • a groove 2h is provided on the surface 2g of the mounting shell 2 facing the main body shell 33, the groove 2h is annular, and is located on the outer peripheral side of the through hole 2d, and is connected with the through hole 2d. concentric.
  • a sealing member 38 is installed in the groove 2h, and the sealing member 38 is pressed into the groove 2h by the surface 33e of the main body case 33, thereby being able to seal the gap between the main body case 33 and the installation case 2 at the outer periphery of the through hole 2d. seal between.
  • a plurality of protrusions 33j are respectively provided on the outer peripheral surface of each positioning portion 33i. In this way, the coaxial positioning of the main body casing 33 and the motor casing 11 can be easily achieved.
  • the inner diameter of the through hole 2d can be formed larger than the outer diameter of the connection housing 35, so that there is a gap between the outer peripheral surface of the connection housing 35 and the inner peripheral surface of the through hole 2d.
  • the wiring housing 35 is loosely inserted into the through hole 2d.
  • the wiring housing 35 can be smoothly inserted into the through hole 2d without The connection case 35 is broken due to the collision with the installation case 2 .
  • the through hole 2d may be formed in a stepped hole shape, and the stepped hole has a large diameter portion and a small diameter portion, and the large diameter portion Located on the upper side of the small diameter portion in Figure 10, a stepped end surface is formed between the two; in addition, the wiring housing 35 is formed into a corresponding stepped shaft shape, and a sealing ring is provided between the stepped end surface of the stepped hole and the shoulder of the stepped shaft, The sealing ring is squeezed (or clamped) in the direction of the axis X1 to play a sealing role.
  • a groove for accommodating the sealing member 38 may also be provided on the main casing 33 .
  • the sealing member 38 may be formed of a sealant.
  • the present application provides a power-assisted motor device, a braking device, a motor position sensor, a motor position sensor installation structure and an installation method, and also provides a power-assisted motor device, a braking device or a motor position sensor and The vehicle on which it is installed.
  • the type of vehicle here is not particularly limited, for example, it can be a car, a truck, a passenger car or a sport utility vehicle (SUV), etc.
  • SUV sport utility vehicle
  • it can be a fuel vehicle, a pure electric vehicle, or a hybrid vehicle Waiting for new energy vehicles.
  • the installation structure of the motor position sensor described above is not limited to the application in the brake device, and can also be applied in other devices equipped with motors, such as a power assist motor device for steering.
  • the booster motor device of the present application is not limited to a booster motor device for braking, for example, it may also be a booster motor device for steering.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)

Abstract

La présente invention concerne un dispositif de moteur électrique assisté (100, 100A, 100B), une structure de montage de capteur de position de moteur électrique (3), un dispositif de frein (101) et un véhicule (300). Une coque de capteur (30) et un module de commande (5) sont respectivement configurés sur deux côtés d'une coque de montage (2). Une coque de câblage (35) agencée sur la coque de capteur (30) passe à travers un trou traversant (2d) dans la coque de montage (2) pour être reliée au module de commande (5). Une première partie de positionnement (33a) sur la coque de capteur (30) est en prise avec une seconde partie de positionnement (2e) sur la coque de montage (2). La coque de capteur (30) et la coque de montage (2) ont une relation de positionnement directe, de telle sorte que l'impact négatif d'une erreur de montage entre la coque de capteur (30) et un moteur électrique (1) sur une relation de position entre la coque de capteur (30) et la coque de montage (2) peut être réduit, permettant ainsi d'améliorer la précision de position entre la coque de câblage (35) agencée sur la coque de capteur (30) et le module de commande (5) monté sur la coque de montage (2), de rendre une connexion électrique entre les deux stable et fiable, et d'améliorer la stabilité et la fiabilité des performances de détection de position de moteur électrique obtenues par le module de commande (5) au moyen du capteur de position de moteur électrique (3).
PCT/CN2021/137856 2021-12-14 2021-12-14 Dispositif de moteur électrique assisté, structure de montage de capteur de position, dispositif de frein et véhicule WO2023108410A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180033696.6A CN116601854A (zh) 2021-12-14 2021-12-14 助力电机装置、位置传感器安装结构、制动装置与车辆
PCT/CN2021/137856 WO2023108410A1 (fr) 2021-12-14 2021-12-14 Dispositif de moteur électrique assisté, structure de montage de capteur de position, dispositif de frein et véhicule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/137856 WO2023108410A1 (fr) 2021-12-14 2021-12-14 Dispositif de moteur électrique assisté, structure de montage de capteur de position, dispositif de frein et véhicule

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111446808A (zh) * 2020-05-06 2020-07-24 宁波拓普集团股份有限公司 一种汽车刹车系统用电机
CN112236343A (zh) * 2018-06-07 2021-01-15 罗伯特·博世有限公司 滑动调节装置的液压总成
CN113241902A (zh) * 2021-06-29 2021-08-10 中汽创智科技有限公司 一种电机以及制动系统
JP2021128022A (ja) * 2020-02-12 2021-09-02 ジヤトコ株式会社 装置
WO2021180536A1 (fr) * 2020-03-13 2021-09-16 Robert Bosch Gmbh Dispositif d'entraînement pour un système de freinage et système de freinage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112236343A (zh) * 2018-06-07 2021-01-15 罗伯特·博世有限公司 滑动调节装置的液压总成
JP2021128022A (ja) * 2020-02-12 2021-09-02 ジヤトコ株式会社 装置
WO2021180536A1 (fr) * 2020-03-13 2021-09-16 Robert Bosch Gmbh Dispositif d'entraînement pour un système de freinage et système de freinage
CN111446808A (zh) * 2020-05-06 2020-07-24 宁波拓普集团股份有限公司 一种汽车刹车系统用电机
CN113241902A (zh) * 2021-06-29 2021-08-10 中汽创智科技有限公司 一种电机以及制动系统

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