WO2023108410A1

WO2023108410A1 - Power-assisted electric motor device, position sensor mounting structure, brake device and vehicle

Info

Publication number: WO2023108410A1
Application number: PCT/CN2021/137856
Authority: WO
Inventors: 张鑫; 卢宇灏; 张永生
Original assignee: 华为技术有限公司
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2023-06-22
Also published as: CN116601854A

Abstract

A power-assisted electric motor device (100, 100A, 100B), an electric motor position sensor (3) mounting structure, a brake device (101) and a vehicle (300). A sensor shell (30) and a control module (5) are respectively configured on two sides of a mounting shell (2). A wiring shell (35) arranged on the sensor shell (30) passes through a through hole (2d) in the mounting shell (2) to be connected to the control module (5). A first positioning portion (33a) on the sensor shell (30) is engaged with a second positioning portion (2e) on the mounting shell (2). The sensor shell (30) and the mounting shell (2) have a direct positioning relationship, such that the adverse impact of a mounting error between the sensor shell (30) and an electric motor (1) on a positional relationship between the sensor shell (30) and the mounting shell (2) can be reduced, thereby improving the positional accuracy between the wiring shell (35) arranged on the sensor shell (30) and the control module (5) mounted on the mounting shell (2), making an electrical connection between the two stable and reliable, and improving the stability and reliability of the electric motor position detection performance achieved by the control module (5) by means of the electric motor position sensor (3).

Description

Power-assisted motor device, position sensor installation structure, braking device and vehicle

technical field

The application relates to a booster motor device, a motor position sensor installation structure, a brake device and a vehicle.

Background technique

For example, in an electrohydraulic brake device for a vehicle, there is a motor position sensor mounting structure as follows. That is, 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. In this way, 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.

Contents of the invention

However, the inventor found in the process of creating the present application that the motor position detection performance realized by the control module through the position sensor is not stable, and the reasons are as follows. Since the sensor housing is indirectly installed on the hydraulic block through the motor, sometimes an assembly error will occur between the sensor housing and the motor, and an assembly error will also occur between the motor and the hydraulic block. The two errors are superimposed together, resulting in a sensor housing There is a large position error with the hydraulic block, which makes the connection accuracy between the connector on the sensor housing and the control module installed on the hydraulic block poor, and the electrical connection is unreliable, resulting in poor motor position detection performance. Stable and unreliable.

In view of this, 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.

With the above structure, when the sensor housing of the motor position sensor is assembled on the installation housing, since the first positioning part is also provided on the first surface provided with the wiring housing, 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.

As a possible implementation manner of the first aspect, the wiring housing cooperates with the through hole so as to be positioned in the second direction.

By adopting the above structure, 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.

As a possible implementation manner of the first aspect, a first sealing member is provided between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole.

With the above structure, on the one hand, 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. On the other hand, 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.

As a possible implementation of the first aspect, 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.

As a possible implementation manner of the first aspect, 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.

As a possible implementation manner of the first aspect, one of the first positioning portion or the second positioning portion includes a protrusion, and the other includes a hole.

With the above structure, positioning can be reliably achieved with a simple structure.

As a possible implementation manner of the first aspect, the sensor housing is clamped by the motor housing and the installation housing in the first direction.

With the above structure, 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.

As a possible implementation of the first aspect, 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.

As a possible implementation manner of the first aspect, 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.

With the above structure, 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 In the calibration process after the assembly is completed, 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.

As a possible implementation manner of the first aspect, the sensor body is sealed in the sensor housing.

With the above structure, the sensor body can be prevented from being subjected to chemical corrosion and the like.

As a possible implementation of the second aspect, 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.

By adopting the above structure, it is possible to reliably prevent the sensor body from being subjected to chemical corrosion and the like.

As a possible implementation manner of the first aspect, 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.

With the above structure, 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 to be positioned in the second direction. In this way, 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. The position accuracy between the shell and the mounting shell and the control module that may be installed on it, to avoid collision and interference between the wiring shell and the mounting shell, which will cause the wiring shell to crack and cause the electrical connection of the power line and/or signal line to be unstable , In addition, 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.

As a possible implementation manner of the second aspect, the wiring housing cooperates with the through hole so as to be positioned in the second direction.

As a possible implementation manner of the second aspect, a first sealing member is provided between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole.

As a possible implementation of the second aspect, 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.

As a possible implementation manner of the second aspect, 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.

As a possible implementation manner of the second aspect, one of the first positioning portion or the second positioning portion includes a protrusion, and the other includes a hole.

As a possible implementation manner of the second aspect, a motor housing is further included, and the sensor housing is clamped by the motor housing and the installation housing in the first direction.

As a possible implementation of the second aspect, 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.

With the above structure, the sensor housing is accommodated in the first groove, which can properly reduce the volume of the overall structure and is beneficial to miniaturization. In addition, the sensor housing can be covered by the motor housing, thereby protecting the motor position sensor from water and dust.

As a possible implementation manner of the second aspect, 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.

As a possible implementation of the second aspect, a sensor body is sealed in the sensor housing.

As a possible implementation manner of the second aspect, 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.

With the above structure, 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.

As a possible implementation of the third aspect, a gap is provided between the outer peripheral surface of the wiring housing and the inner peripheral surface of the through hole.

As a possible implementation of the third aspect, it 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.

As a possible implementation manner of the third aspect, one of the third positioning portion and the fourth positioning portion includes a protrusion, and the other includes a groove.

As a possible implementation of the third aspect, 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.

As a possible implementation of the third aspect, a control module is disposed on the installation housing, and the wiring housing is connected between the sensor housing and the control module.

In this way, 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.

According to the sixth aspect of the present application, there is provided 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.

As a possible implementation manner of the sixth aspect, 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.

These and other aspects of the present application will be made more apparent in the following description of the embodiment(s).

Description of drawings

The various features of the present application and the connections between the various features are further described below with reference to the accompanying drawings. The drawings are exemplary, some features are not shown to scale, and in some drawings, features customary in the field to which the application pertains and are not necessary for the application may be omitted, or additionally shown for the The application is not an essential feature, and the combination of the various features shown in the drawings is not intended to limit the application. In addition, in the whole specification, the content indicated by the same reference numeral is also the same. The specific accompanying drawings are explained as follows:

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 .

Explanation of reference signs

1, motor; 11, motor housing; 11a, hole; 11b, accommodation chamber; 11c, accommodation chamber; 11d, groove (first groove); 11e, one surface of motor housing; 11f, motor One surface (second surface) of the casing; 11g, the positioning part (the third positioning part) on the motor casing; 12, the rotor; 13, the power cord; 42, the screw rod (the output shaft of the motor);

2. Install the housing; 2a, piston hole; 2b, hole; 2c, through hole; 2d, through hole; 2d, install one surface of the housing; 2e, install the positioning part (second positioning part) on the side of the housing; 2f, threaded hole; 2g, one surface (third surface) of the installation housing; 2h, groove; 21, piston cylinder liner;

3. Motor position sensor; 30, sensor housing; 31, sensor rotor; 31a, connecting part; 31b, blade; 31c, through hole; 32, sensor body; 32a, signal processing element; 32b, through hole; 33, main body Case; 33a, positioning portion (first positioning portion) on the sensor case side; 33b, through hole; 33c, through hole; 33d, groove (second groove); 33e, one surface of the main body case (first surface ); 33f, groove; 33g, through hole; 33h, outer peripheral surface; 33i, positioning part (fourth positioning part, first protrusion) on the main body shell of the sensor housing; 33j, protrusion (second protrusion); 34 , cover plate; 34a, through hole; 37, threaded connector;

35, wiring housing; 35a, groove; 36, sealing member (first sealing member); 38, sealing member (second sealing member);

41, piston; 41a, card slot;

5. Control module; 51. Housing of the control module; 52. Control substrate;

6. Piston guide part; 61. Body part of piston guide part; 61a, through hole; 61b, rib; 62, installation part; 62a, through hole; 63, threaded connector;

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

Detailed ways

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. As shown in the drawing, 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 .

In addition, 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. In addition, 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. In addition, in FIG. 1 , the brake device 101 is only briefly and schematically shown, and its specific structure is not drawn.

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 .

There is such a structure of the braking device as follows. That is, it 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.

In addition, 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. In addition, 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.

However, this structure has the following technical problems:

First of all, since the sensor housing is indirectly installed on the hydraulic block through the motor, sometimes assembly errors will occur between the sensor housing and the motor, and assembly errors will also occur between the motor and the hydraulic block. The two errors are superimposed, resulting in sensor There is a large position error between the housing and the hydraulic block, which makes the connection between the connector on the terminal post and the control module installed on the hydraulic block less accurate, and the electrical connection is unreliable, resulting in poor motor position detection performance. Stable and unreliable.

In addition, when the position error between the terminal post and the hydraulic block is large, the terminal post or connector is likely to be deformed by force due to interference with the hydraulic block, resulting in material cracking and other situations.

There is a sealing ring between the terminal post and the hydraulic block. Due to the large position error, the sealing ring may be worn during the insertion process, which will affect the sealing performance.

In addition, 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.

In addition, it is not limited to the braking device, and the above technical problems also exist in other assist motor devices with similar structures.

To this end, 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.

The specific content of the embodiments of the present application will be described below with reference to the accompanying drawings.

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 .

As shown in FIGS. 2-4 , 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 . As shown in FIG. 2 , 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.

In addition, in addition to the above structural elements, the booster motor device 100 may also include common structural elements such as a liquid storage tank.

The above structural elements of the booster motor device 100 will be described in detail below.

As shown in FIG. 2 , 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 , and 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. In addition, it can be understood that the motor 1 also includes an unillustrated stator.

In addition, as shown in FIG. 2, 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. In addition, as shown in FIG. 2 , the surface 11 f of the motor case 11 is a surface facing the mounting case 2 .

In addition, 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.

Wherein, the hole 11a has an opening on the surface 11e on the upper side in FIG. On the surface 11e on the upper side in FIG. 2, the receiving cavity 11c is formed on the bottom surface of the groove 11d.

As shown in FIG. 2 , 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.

In addition, as shown in FIG. 4 , 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.

As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 6, in this embodiment, 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. In Fig. 2, the upper side protrudes into the piston hole 2a to be disposed in the piston hole 2a. In addition, as shown in Figure 2, 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. Driven by the motor 1 , 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. In this way, the piston 41 , the piston-cylinder liner 21 and the installation housing 2 constitute a plunger type hydraulic pump.

In addition, 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. In addition, 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.

In addition, in this embodiment, 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. Furthermore, in this embodiment, a plunger-type pump structure is used to generate hydraulic pressure, however, other pump structures may also be used.

In addition, in this embodiment, 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.

In addition, as shown in FIG. 2 , FIG. 4 , and FIG. 6 , a hole 2 b , a through hole 2 c and a through hole 2 d are also provided on the mounting case 2 . Wherein, there are three holes 2b, which are threaded holes, for screwing in the threaded connector 63 to fix the piston guiding component 6 on the installation housing 2 . In this embodiment, the threaded connection member 63 is a screw. In addition, as other embodiments, 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 .

In addition, as shown in Fig. 2 and Fig. 6, 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 . As another embodiment, 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.

As shown in FIG. 4 and FIG. 7 , 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. Regarding the form of sealing connection between the cover plate 34 and the main body shell 33 , laser welding or sealant sealing can be adopted. As another form, a sealing ring may be provided between the main body case 33 and the cover plate 34 .

In addition, as another embodiment, 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 .

As shown in FIG. 2 and FIG. 7 , 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.

In addition, 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 . In addition, 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.

In addition, as mentioned above, referring to FIG. 2, 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.

Furthermore, in this embodiment, 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 .

As shown in FIG. 2 , 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.

As shown in FIG. 7, 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.

In addition, in the present embodiment, 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 .

In this embodiment, as shown in FIG. 2 , 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 . By controlling the press-fitting depth of the connecting portion 31a in the rotor 12, 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. As another embodiment, for example, the sensor rotor 31 may also be made of magnetic material. In addition, the motor position sensor 3 can also be formed in the form of a photosensitive sensor.

In addition, 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.

As shown in FIG. 2 and FIG. 7 , 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.

As shown in FIG. 2 and FIG. 3 , the wiring housing 35 passes through the through hole 2 d on the installation housing 2 downward from the upper side in FIG. 2 .

Although not shown, 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 . In addition, 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.

In this embodiment, 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 .

As shown in Fig. 2 and Fig. 7, in this embodiment, 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. Made of rubber. In this way, the gap between the outer peripheral surface of the wiring housing 35 and the inner peripheral surface of the through hole 2d on the installation housing 2 can be sealed by the sealing member 36, and the dust, oil, etc. generated on the side of the motor 1 can be prevented from entering the control module through the gap. 5 to cause pollution to the electronic components in it.

In addition, 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.

As mentioned above, as shown in FIG. 2 and FIG. 7 , 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).

In addition, in this embodiment, 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.

In this way, through the engagement of the positioning portion 33a and the positioning portion 2e and the engagement of the wiring housing 35 and the through hole 2d, 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.

In addition, as shown in FIG. 7, 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, and a through hole is provided on the main body case 33. 33b. Referring to FIG. 2 , these through holes allow the piston 41 and the piston guide member 6 to pass through.

As shown in FIG. 2 , 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.

In addition, as shown in FIG. 5 , 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.

As shown in FIGS. 2 and 5 , 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. As mentioned above, 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.

As shown in FIGS. 2 and 5 , 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 . In this embodiment, 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 . And the installation shell 2 is provided with a plurality of threaded holes (not marked) for screwing in the threaded connectors 63 .

As mentioned above, as shown in FIG. 2 and FIG. 7, 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 .

In addition, as shown in FIG. 2, in this embodiment, 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.

As shown in FIG. 2 , the 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. Direction control and pressure building control, opening and closing control and opening control of the valve set on the installation shell 2, etc. For example, power supply control and the like can be realized through the power device.

The operation of the booster motor device 100 with the above structure will be briefly described below.

For example, when it is detected that the brake pedal of the vehicle is stepped on, or when receiving a braking command from the automatic driving control unit of the vehicle, the control module 5 sends a signal to the motor 1 to make the rotor 12 of the motor 1 rotate in one direction. Rotate, at this time, 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.

Due to this movement of the piston 41, the oil in the piston hole 2a is compressed to generate a hydraulic pressure, which is transmitted to the wheel brake through an oil passage (not shown), so that the wheel brake brakes the wheel.

When the rotor 12 of the motor 1 rotates, the 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 .

When it is detected that the piston 41 moves to a preset position, the 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.

In this way, under the control of the control module 5 , the motor 1 drives the piston 41 to perform reciprocating motion.

With the booster motor device 100 having the above structure, during assembly, 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. On 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.

At this time, if the 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 .

After the sensor housing 30 is positioned on the installation housing 2, 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. Afterwards, 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.

In addition, as another embodiment, after the motor 1 is fixed on the installation housing 2, the 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 .

With the above structure, since the positioning part 33a is provided on the sensor housing 30, and the positioning part 2e is provided on the installation housing 2, 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.

Therefore, there is a direct positioning structure between the sensor housing 30 and the installation housing 2. When assembling, 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. Compared with the situation of positioning or assembling on the installation housing 2, 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 . In mass production, the reliability of mass production can be improved.

In addition, since the position error between the wiring housing and the installation housing can be reduced, it is possible to prevent the wiring housing 35 from interfering with the installation housing 2 and causing the wiring housing 35 and the connector thereon to crack.

In addition, when there is a sealing member between the outer peripheral surface of the wiring case 35 and the inner peripheral surface of the through hole 2d of the mounting case 2, since the positional error between the wiring case and the mounting case can be reduced, the sealing can be suppressed. The sealing performance is reduced due to wear and tear of parts.

In addition, with the above structure, when 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 .

Therefore, by adopting the above structure, 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.

In the structure described above, engaging the wiring housing 35 with the through hole 2d on the installation housing 2 also plays a positioning role. At this time, the number of positioning parts 33a may be set to one, and of course, may be set to a plurality.

In addition, when the number of positioning parts 33a is multiple, the wiring housing 35 can not actually play a positioning role. Specifically, for example, 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.

In addition, with the above structure, 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 .

In addition, compared with the structure in which the main body shell 33 is fixed on the installation shell 2 through a buckle structure, the assembly and disassembly can be repeated many times, and the main body shell 33 and the like can be reused at least once.

Furthermore, compared with the structure in which the main body shell 33 is fixed on the installation housing 2 through a buckle structure, 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.

In addition, with the above structure, 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.

As another embodiment, 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 . Alternatively, a groove with the same function can also be provided on the housing 2 .

In addition, with the above structure, 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 .

As shown in Figure 8 and Figure 9, 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 .

Specifically, 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 .

In addition, the other structures in this embodiment are the same as those in the above-mentioned embodiment, and the same reference numerals are used, and the detailed description thereof is omitted.

With the above structure, for example, compared with fixing the main body shell 33 on the installation shell 2 through a buckle structure, the assembly and disassembly can be repeated many times, and the main body shell 33 can be reused at least once.

In this embodiment, the threaded connection 37 is a screw. In addition, as other embodiments, 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.

In this embodiment, 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.

In addition, similar to the embodiment shown in FIG. 2 , 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 .

In addition, the number of each of the positioning part 33i and the positioning part 11g may be one or plural. In 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).

In addition, as shown in Fig. 10 and Fig. 11, 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.

In addition, as shown in FIG. 12 , 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.

Other structures in this embodiment are basically the same as those in the embodiment shown in FIG. 2 , and the same reference numerals are used, and their detailed descriptions are omitted.

In this embodiment, instead of providing a sealing member between the outer peripheral surface of the wiring housing 35 and the inner peripheral surface of the through hole 2d as in the embodiment shown in FIG. A sealing member 38 is provided between the facing surface 2g and the surface 33e, and the sealing member 38 is pressed in the direction of the axis X1 to perform a sealing function. Therefore, in this embodiment, 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. Therefore, even if the wiring housing 35 has a slight positional error relative to the installation housing 2 and the through hole 2d in the direction perpendicular to the axis X1, 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 .

In addition, as a modified example of this embodiment, instead of providing the sealing member 38 between the surface 33e and the surface 2g, 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.

As another modification of this embodiment, a groove for accommodating the sealing member 38 may also be provided on the main casing 33 . In addition, the sealing member 38 may be formed of a sealant.

It can be understood that, through the above description, 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. In addition, it can be a fuel vehicle, a pure electric vehicle, or a hybrid vehicle Waiting for new energy vehicles.

In addition, it can be understood that 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. It can also be seen from this that 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.

Note that the above are only preferred embodiments and technical principles used in this application. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, all of which belong to protection scope of this application.

Claims

A power assist motor device, characterized in that it comprises: a motor rotor (12), a motor housing (11), a motor position sensor (3) and an installation housing (2);

The motor rotor (12) is accommodated in the motor housing (11);

The motor casing (11) is installed on the installation casing (2);

The motor position sensor (3) includes a sensor body (32) and a sensor housing (30);

The sensor body (32) is accommodated in the sensor housing (30);

A wiring housing (35) is arranged on the sensor housing (30);

A through hole (2d) penetrating in the first direction is provided on the installation shell (2);

The wiring housing (35) passes through the through hole (2d);

A first positioning portion (33a) is provided on the sensor housing (30);

A second positioning part (2e) is provided on the installation shell (2), and the first positioning part (33a) cooperates with the second positioning part (2e) so as to be positioned in the second direction, The second direction is perpendicular to the first direction.
The power assist motor device according to claim 1, characterized in that, the wiring housing (35) cooperates with the through hole (2d) so as to be positioned in the second direction.
The booster motor device according to claim 1 or 2, characterized in that a first sealing member ( 36).
The booster motor device according to claim 1 or 2, characterized in that, between the first surface (33e) of the wiring housing (35) and the third surface (2g) of the installation housing (2) A second sealing member (38) is interposed therebetween, and the first surface (33e) and the third surface (2g) face each other in the first direction.
The booster motor device according to any one of claims 1-4, characterized in that it further comprises a control module (5), the control module (5) is installed on the installation housing (2), and the The wiring housing (35) is connected between the sensor housing (30) and the control module (5).
The booster motor device according to any one of claims 1-5, characterized in that, one of the first positioning portion (33a) or the second positioning portion (2e) includes a protrusion, and the other includes a hole .
The power assist motor device according to any one of claims 1-6, characterized in that, the sensor housing (30) is connected by the motor housing (11) and the installation in the first direction. The shell (2) is clamped.
The booster motor device according to claim 7, characterized in that a first groove (11d) is provided on the second surface (11f) of the motor housing (11), and the second surface (11f ) towards the installation housing (2), the sensor housing (30) is clamped by the bottom surface of the first groove (11d) and the installation housing (2).
The booster motor device according to any one of claims 1-8, further comprising a sensor rotor (31);

The sensor rotor (31) is fixed to the motor rotor (12), and is arranged at a distance from the sensor housing (30).
The power assist motor device according to any one of claims 1-9, characterized in that the sensor body (32) is sealed in the sensor housing (30).
The booster motor device according to any one of claims 1-10, characterized in that, the wiring housing (35) and the first positioning portion (33a) are arranged on the side of the sensor housing (30). On the first surface (33e), the first surface (33e) faces the installation shell (2).
A motor position sensor installation structure, characterized in that it comprises a sensor housing (30) and an installation housing (2);

A wiring housing (35) is arranged on the sensor housing (30);

A through hole (2d) penetrating in the first direction is provided on the installation shell (2);

The wiring housing (35) passes through the through hole (2d);

A first positioning portion (33a) is provided on the sensor housing (30);

A second positioning part (2e) is provided on the installation shell (2), and the first positioning part (33a) cooperates with the second positioning part (2e) so as to be positioned in the second direction, The second direction is perpendicular to the first direction.
The motor position sensor installation structure according to claim 12, characterized in that, the wiring housing (35) cooperates with the through hole (2d) so as to be positioned in the second direction.
The motor position sensor installation structure according to claim 12 or 13, characterized in that a first seal is provided between the outer peripheral surface of the wiring housing (35) and the inner peripheral surface of the through hole (2d). Parts (36).
The motor position sensor installation structure according to claim 12 or 13, characterized in that, between the first surface (33e) of the wiring housing (35) and the third surface (2g) of the installation housing (2) ) is provided with a second sealing member (38), and the first surface (33e) faces the third surface (2g) in the first direction.
The motor position sensor installation structure according to any one of claims 12-15, characterized in that, a control module (5) is installed on the installation housing (2), and the wiring housing (35) is connected to Between the sensor housing (30) and the control module (5).
The motor position sensor installation structure according to any one of claims 12-16, characterized in that, one of the first positioning portion (33a) or the second positioning portion (2e) includes a protrusion, and the other Includes holes.
The motor position sensor installation structure according to any one of claims 12-17, further comprising a motor housing (11), the sensor housing (30) being held in the first direction The motor casing (11) is clamped with the installation casing (2).
The motor position sensor installation structure according to claim 18, characterized in that a first groove (11d) is provided on the second surface (11f) of the motor casing (11), and the second surface (11f) faces the installation housing (2), and the sensor housing (30) is clamped by the bottom surface of the first groove (11d) and the installation housing (2).
The motor position sensor installation structure according to any one of claims 12-19, further comprising a motor rotor (12) and a sensor rotor (31);

The sensor rotor (31) is fixed to the motor rotor (12), and is arranged at a distance from the sensor housing (30).
The motor position sensor installation structure according to any one of claims 12-20, characterized in that a sensor body (32) is sealed inside the sensor housing (30).
The motor position sensor installation structure according to any one of claims 12-21, characterized in that, the wiring housing (35) and the first positioning portion (33a) are arranged on the sensor housing (30 ), the first surface (33e) faces the installation housing (2).
A braking device, characterized by comprising the motor position sensor installation structure according to any one of claims 12-22.
A vehicle, characterized by comprising the booster motor device described in any one of claims 1-11 or the motor position sensor installation structure described in any one of claims 12-22 or the system described in claim 23. moving device.