A motor applied to a three-in-one electric pump of a vehicle active suspension

Abstract

The utility model belongs to motor technical field, concretely relates to a motor for three-in-one electric pump of vehicle active suspension, and this motor includes casing, stator and rotor, is equipped with circuitry between casing and stator, and casing and stator are provided with hard support and the end support connected in hard support end, the cavity parallel with stator axis is provided on hard support, and the circuitry is crossed, the end contact connected with circuitry is provided in end support, and the end contact is outward overhanging relative to stator end, is used for connecting the pressure sensor arranged in oil pump, the utility model is used to solve the technical problem that the current motor lacks the device for positioning the circuitry crossed between casing and stator, causes the circuitry displacement phenomenon to be easy to appear when motor assembly.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a motor used in a three-in-one electric pump for vehicle active suspension. Background Technology

[0002] Traditional shock absorbers have poor vibration filtering performance and generally offer only average ride comfort. While semi-active suspensions offer continuously adjustable damping compared to traditional shock absorbers, they still lag behind active suspensions in terms of adjustment precision and response speed. As market demands for smoothness and handling in automobiles increase, the market share of electronically controlled shock absorbers is gradually growing, and active suspension, as a superior technological solution, is gradually becoming the mainstream. The electric motor is a crucial and indispensable power component of the electric pump assembly. A high-performance permanent magnet motor drives a four-quadrant internal gear pump, supporting both forward and reverse rotation, continuously supplying high-pressure oil to the shock absorbers. This enables a wider adjustment bandwidth and faster response speed for the suspension, truly improving vehicle smoothness and handling, and providing passengers with a better driving experience.

[0003] The motor is equipped with a temperature sensor to detect the stator temperature during operation. A pressure sensor is also installed on the oil pump connected to the motor to detect the pressure within the pump. In existing motors, the connecting wires for the temperature and pressure sensors pass through the stator and motor housing before connecting to the motor controller at the end of the housing. Because the connecting wires are flexible, they are prone to displacement during the assembly and potting of the motor and stator, causing assembly uncertainty and affecting subsequent safety. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a motor for a three-in-one electric pump for vehicle active suspension, which solves the technical problem that the current motor lacks a device for positioning the wiring passing between the housing and the stator, causing wiring displacement to easily occur during motor assembly.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a motor for a three-in-one electric pump for vehicle active suspension, the motor comprising a housing, a stator, and a rotor, with wiring passing through the housing and the stator, a rigid bracket and an end bracket connected to the end of the rigid bracket being provided between the housing and the stator, the rigid bracket having a cavity parallel to the axis of the stator for the wiring to pass through; the end bracket having an end contact connected to the wiring, the end contact extending outward relative to the end of the stator for connecting a pressure sensor disposed within the pump.

[0006] Preferably, the rigid support includes an upper support and a lower support, which are fastened together by fastening points, forming the cavity between them.

[0007] Preferably, the rigid bracket has a plug at its end away from the end bracket for connecting to the controller.

[0008] Preferably, a controller housing is integrally formed at the end of the housing, and a rear cover is detachably connected to the outside of the controller housing.

[0009] Preferably, the rear cover is connected to the controller housing by bolts.

[0010] Preferably, the motor shaft coaxially arranged at the rotor end adopts a hollow shaft structure, and the side wall of the motor shaft has oil holes to form an internal circulation cooling oil circuit.

[0011] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0012] This invention integrates the wiring passing between the housing and the stator onto a rigid bracket. During assembly, the rigid bracket is first pre-fixed to the outer wall of the stator, and then the stator is fitted into the housing for potting. This not only prevents the wiring from shifting during potting, but also integrates the wiring of the temperature sensor, pressure sensor, and other devices onto the rigid bracket, making the motor assembly process more convenient and improving assembly efficiency and reliability. Attached Figure Description

[0013] Figure 1 A schematic diagram of an embodiment of a motor used in a three-in-one electric pump for active suspension in vehicles;

[0014] Figure 2 An exploded view of an embodiment of a motor used in a three-in-one electric pump for active suspension in a vehicle;

[0015] Figure 3 Schematic diagram of rigid support and end support;

[0016] Figure 4 This is a schematic diagram of the rigid support and end support from another direction.

[0017] in, Figure 1-4 In the middle, 1-housing, 2-stator, 3-rotor, 4-motor shaft, 41-oil hole, 5-protective sleeve, 6-rigid bracket, 61-upper bracket, 62-lower bracket, 7-clamping point, 8-end bracket, 9-end contact, 10-plug, 11-circuit, 12-controller housing, 13-rear cover, 14-low voltage connector, 15-high voltage connector. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments, and do not limit the scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The specific implementation method is as follows:

[0022] Example 1, such as Figure 1-4 As shown, a motor for a three-in-one electric pump used in a vehicle's active suspension system includes a housing 1, a stator 2, and a rotor 3. The stator 2 and rotor 3 are sequentially housed within the housing 1. A protective sleeve 5 is placed between the stator 2 and rotor 3 to seal and protect the rotor 3. A motor shaft 4 is coaxially connected to the rotor 3, and the motor shaft 4 is used to connect to an oil pump. A pressure sensor is installed on the oil pump, and a contact point connected to the pressure sensor is located at the end of the oil pump near the motor. A temperature sensor is installed at a suitable position on the stator 2 to detect the temperature of the stator 2 during motor operation.

[0023] A rigid bracket 6 and an end bracket 8 are disposed between the stator 2 and the housing 1. The rigid bracket 6 is arranged parallel to the axis of the stator 2. During assembly, the rigid bracket 6 is placed between the housing 1 and the stator 2, with only its end exposed. The end bracket 8 is vertically connected to the exposed end of the rigid bracket 6. A cavity parallel to the axis of the stator 2 is provided inside the rigid bracket 6 for the wiring 11 of the temperature sensor, pressure sensor, and other devices to pass through. An outwardly extending end contact 9 is provided on the outside of the end bracket 8, which is used to connect with the contact of the oil pump end pressure sensor when the oil pump is connected to the motor.

[0024] In this embodiment, a motor for a three-in-one electric pump used in a vehicle's active suspension system is used. A rigid bracket 6 is pre-fixed to the outer wall of the stator 2. The housing 1 and stator 2 are assembled using a heat-fitting method. A reasonable interference fit ensures the stability of the transmitted torque. After heat fitting, the stator 2 and housing 1 are firmly bonded at high temperatures. Then, glue is applied to further solidify the connection between the housing 1 and stator 2. The circuits 11 of the pressure and temperature sensors pass through the cavity of the rigid bracket 6 and connect to the controller. The controller dynamically adjusts the motor power according to temperature and pressure changes to avoid overload. The circuits 11 of multiple sensors are integrated on the rigid bracket 6 and pre-fixed to the stator 2 via the rigid bracket 6. This prevents the circuits 11 from shifting during glue application, significantly increasing sensor stability and real-time detection capabilities. It also facilitates the motor assembly process, improving assembly efficiency and reliability.

[0025] Furthermore, the rigid support 6 includes an upper support 61 and a lower support 62, which are connected together by a fastening point 7, forming a cavity between them for the line 11 to pass through. In this embodiment, the fastening point 7 is a fastening element, which facilitates the connection of the upper support 61 and the lower support 62.

[0026] Furthermore, a plug 10 is provided at the end of the rigid support 6 away from the end support 8, through which the line 11 passes and connects to the controller. The plug 10 provides support for the line 11.

[0027] Furthermore, a controller housing 12 is provided at the end of housing 1 away from the motor shaft 4. The controller housing 12 is integrally formed with housing 1 by casting, and a rear cover 13 is detachably connected to the outside of the controller housing 12. The controller is connected inside the controller housing 12, so that the controller, motor and oil pump are axially integrated, reducing the radial space occupied. In addition, the integrated design reduces the number of parts, lowers the overall manufacturing cost, and reduces the overall weight.

[0028] In this embodiment, a low-voltage connector 14 and a high-voltage connector 15 are provided on the upper end of the controller housing 12 near the housing 1, for connecting low-voltage and high-voltage power supplies. The connectors are parallel to the axis of the housing 1, which saves more space.

[0029] Furthermore, a detachable connection is achieved between the controller housing 12 and the rear cover 13 by bolts, and multiple connection points are provided along the circumference of the controller housing 12 and the rear cover 13 to facilitate the installation and disassembly of the controller housing 12 and the rear cover 13.

[0030] Furthermore, the motor shaft 4 adopts a hollow shaft structure, and oil holes are opened on the side wall of the motor shaft 4 to form an internal circulation cooling oil circuit to cool the motor, reduce the risk of the motor overheating due to overload, and further improve the performance of the whole vehicle.

[0031] Example 2, a motor for a three-in-one electric pump for vehicle active suspension, differs from Example 1 in that the rigid bracket is no longer a separate unit; both the rigid bracket and the end bracket are integrally molded using injection molding. The wiring is injection molded inside the bracket to simplify the subsequent assembly process. Other structural details will not be elaborated here.

[0032] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A motor for a three-in-one electric pump used in a vehicle's active suspension system, the motor comprising a housing, a stator, and a rotor, wherein wiring passes through the housing and the stator, and the motor shaft is connected to an oil pump, characterized in that, A rigid bracket and an end bracket connected to the end of the rigid bracket are provided between the housing and the stator. The rigid bracket has a cavity parallel to the axis of the stator for the wiring to pass through. The end bracket has an end contact that is connected to the wiring. The end contact extends outward relative to the end of the stator and is used to connect to a pressure sensor installed inside the oil pump.

2. The motor for a three-in-one electric pump for vehicle active suspension according to claim 1, characterized in that, The rigid support includes an upper support and a lower support, which are fastened together by fastening points, forming the cavity between them.

3. The motor for a three-in-one electric pump for vehicle active suspension according to claim 2, characterized in that, The rigid support has a plug at its end away from the end bracket for connecting to the controller.

4. The motor for a three-in-one electric pump for vehicle active suspension according to claim 1, characterized in that, The end of the housing is provided with a controller housing integrally formed therewith, and a rear cover is detachably connected to the outside of the controller housing.

5. The motor for a three-in-one electric pump for vehicle active suspension according to claim 4, characterized in that, The rear cover is connected to the controller housing by bolts.

6. The motor for a three-in-one electric pump for vehicle active suspension according to claim 1, characterized in that, The motor shaft, coaxially mounted at the rotor end, adopts a hollow shaft structure, and oil holes are opened on the side wall of the motor shaft to form an internal circulation cooling oil circuit.

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