Power-assisted motor for electric power steering system

Abstract

The utility model provides a power-assisted motor for an electric power-assisted steering system, which comprises a motor body and a motor end cover, and the motor end cover is mounted on one side of an output shaft of the motor body. The motor end cover protrudes out of the motor body in the direction perpendicular to the axial direction of the motor to form an installation part located on one side of the motor body. A mounting groove is formed in the mounting part, and a controller plug connector is fixed in the mounting groove; the controller plug connector is used for being connected with a controller of the electric power steering system; a PCB is fixed to the side, away from the motor body, of the motor end cover, the controller plug connector is electrically connected with the PCB, and a phase line of the motor body is electrically connected with the PCB. According to the electric power steering system, the whole vehicle cab space occupied by the electric power steering system is greatly saved, the cost of the electric power steering system is reduced, and the risk of electromagnetic interference in the working process of the electric power steering system is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric power steering control technical field, especially a kind of assist motor for electric power steering system. BACKGROUND

[0002] In recent years, with the development of new small volume new energy electric vehicle, the space arrangement of new energy electric vehicle electric power steering system is greatly tested.

[0003] The electric power steering system (EPS) of the small volume light load new energy electric vehicle currently separates the assist motor and the controller, and the assist motor and the controller are connected through the connecting wire harness.

[0004] The existing electric power steering system (EPS) separates the assist motor and the controller, and the following problems exist:

[0005] 1, the assist motor and the controller are separated, and the space volume occupied is large, which is not conducive to the space arrangement of vehicle cab;

[0006] 2, the assist motor and the controller are separated, and the controller mounting bracket, the controller mounting base, the control cover or the connecting wire harness need to be designed separately, and the product cost is high.

[0007] 3, the assist motor and the controller are separated, when the connecting wire harness is long, the electric power steering system (EPS) will exist electromagnetic interference in the working process, and the controller and vehicle signal will be seriously interfered. INVENTION CONTENTS

[0008] The utility model provides an assist motor for electric power steering system to solve the technical problems that the assist motor and the controller of the existing electric power steering system (EPS) are connected through the connecting wire harness, the space volume is large, the product cost is high, and electromagnetic interference exists.

[0009] One aspect of the utility model is to provide an assist motor for electric power steering system, the assist motor comprises: motor body and motor end cover, the motor end cover is installed on one side of motor body output shaft;

[0010] Wherein, along the direction perpendicular to the motor axial direction, the motor end cover protrudes from the motor body, forming an installation part on one side of the motor body;

[0011] The installation part is provided with an installation groove, and a controller plug-in part is fixed in the installation groove;The controller plug-in part is used for connecting the controller of electric power steering system.

[0012] The motor end cover is fixed with a PCB board on the side away from the motor body, the controller connector is electrically connected with the PCB board, and the phase line of the motor body is electrically connected with the PCB board.

[0013] In a preferred embodiment, the motor body is provided with an output shaft mounting connector; the connector is used to connect a speed reducer.

[0014] In a preferred embodiment, the motor end cover is provided with a first phase line hole; the phase line of the motor body passes through the first phase line hole and is electrically connected with the PCB board.

[0015] In a preferred embodiment, the PCB board is provided with a second phase line hole, and the PCB board is provided with a phase line connector.

[0016] The phase line of the motor body passes through the second phase line hole and is electrically connected with the phase line connector, thereby being electrically connected with the PCB board.

[0017] In a preferred embodiment, the controller connector comprises a first pin, a second pin and a third pin; the PCB board is provided with a first pin hole, a second pin hole and a third pin hole.

[0018] The first pin is inserted into the first pin hole, the second pin is inserted into the second pin hole, and the third pin is inserted into the third pin hole, thereby electrically connecting the controller connector with the PCB board.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] The utility model discloses a kind of assist motor for electric power steering system, motor end cover is installed in the side of motor body output shaft;Along the direction perpendicular to motor axial direction, motor end cover protrudes motor body, forms installation part located in the side of motor body;Installation part is provided with installation slot, controller connector is fixed in installation slot, motor end cover is fixed with PCB board, controller connector is electrically connected with PCB board, and the phase line of motor body is electrically connected with PCB board.

[0021] The utility model discloses a kind of assist motor for electric power steering system, motor end cover is integrated with motor body, controller connector and PCB board, greatly saves the whole vehicle cab space occupied by electric power steering system (EPS).

[0022] The utility model provides a kind of for electric power steering system's assist motor, motor body and controller connector are integrated together by motor end cover, controller is directly connected with controller connector, without separately designing controller mounting support, controller mounting base, controller cover and connecting wire harness, greatly reduce the cost of electric power steering system (EPS).

[0023] The utility model provides a kind of for electric power steering system's assist motor, motor body, controller connector and PCB board are integrated together by motor end cover, the phase line of motor body is directly electrically connected with PCB board, and PCB board is directly connected controller by controller connector, controller and motor body do not need to be arranged connecting wire harness, reduce the risk of electromagnetic interference in the working process of electric power steering system (EPS). DRAWINGS

[0024] In order to more clearly illustrate the embodiment of the utility model or the technical scheme in prior art, the drawings needed in the specific embodiment or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 It is a structure schematic view of the utility model for electric power steering system's assist motor under one view.

[0026] Figure 2 It is another structure schematic view of the utility model for electric power steering system's assist motor under view.

[0027] Figure 3 It is the structure schematic view of motor body and motor end cover connection of the utility model.

[0028] Figure 4 It is the structure schematic view of motor end cover fixed PCB board of the utility model.

[0029] Figure 5 It is the structure schematic view of controller connector of the utility model.

[0030] Figure 6 It is the structure schematic view of PCB board of the utility model. EMBODIMENT

[0031] In order to make the above and other features and advantages of the utility model more clear, the utility model is further described below in conjunction with the drawings. It should be understood that the specific examples given in this paper are for the purpose of explanation to those skilled in the art, and are only illustrative, not restrictive.

[0032] In combination Figures 1 to 6 , according to the embodiment of the utility model, provide a kind of for electric power steering system's assist motor, it include: motor body 1, motor end cover 2, reduction gearbox shell 3, controller plug connector 4 and PCB board 5.

[0033] Motor end cover 2 is installed in the one side of motor body 1 output shaft 101.Specifically, as Figure 3 Indicated, motor end cover 2 is equipped with shaft hole, and the output shaft 101 of motor body 1 passes through the shaft hole of motor end cover 2, and motor body 1 is fixedly installed with motor end cover 2.The output shaft 101 of motor body 1 is installed connector 103, and connector 103 is used to connect reducer (reducer is not shown in drawing).

[0034] As Figure 1 、 Figure 2 And Figure 3 Indicated, according to the embodiment of the utility model, in the direction perpendicular to motor axial direction (such as Figure 3 The direction shown by arrow), motor end cover 2 protrudes motor body 1, and forms installation part 201 located in the one side of motor body 1.

[0035] Installation groove 202 is equipped in installation part 201, and controller plug connector 4 is fixed in installation groove 202, for example, controller plug connector 4 is fixed on motor end cover 2 by bolt (as Figure 2 Indicated), to fix controller plug connector 4 in installation groove 202.Controller plug connector 4 is used to connect the controller (controller is not shown in drawing) of electric power steering system (EPS).

[0036] As Figure 4 Indicated, according to the embodiment of the utility model, the one side of motor end cover 2 away from motor body 1 is fixed PCB board 5, for example, PCB board 5 is fixedly connected with motor end cover 2 by bolt.PCB board 5 is equipped with connector hole, and after PCB board 5 is fixed with motor end cover 2, the connector 103 of the output shaft 101 of motor body 1 is installed, passes through the connector hole of PCB board 5.

[0037] In combination Figure 3 、 Figure 4 、 Figure 5 And Figure 6 , motor end cover 2 is equipped with first phase line hole 203.The phase line 102 of motor body 1 passes through first phase line hole 203, and after PCB board 5 is fixed with motor end cover 2, controller plug connector 4 is electrically connected with PCB board 5, and the phase line 102 of motor body 1 is electrically connected with PCB board 5.

[0038] In the embodiment, the PCB 5 is provided with a second phase line hole 502, and the PCB 5 is provided with a phase line connector 501. The phase line 102 of the motor body 1 is sequentially inserted into the first phase line hole 203, the second phase line hole 502, and the phase line connector 501 to be electrically connected, so as to electrically connect the phase line 102 of the motor body 1 and the PCB 5.

[0039] Further, the phase line 102 of the motor body 1 and the phase line connector 501 are connected by welding. In some embodiments, the phase line 102 of the motor body 1 and the phase line connector 501 are connected by screws.

[0040] As shown in Figs. Figure 5 and Figure 6 The controller connector 4 includes a first pin 401, a second pin 402, and a third pin 403, and the PCB 5 is provided with a first pin hole 503, a second pin hole 504, and a third pin hole 505.

[0041] The first pin 401 is inserted into the first pin hole 503, the second pin 402 is inserted into the second pin hole 504, and the third pin 403 is inserted into the third pin hole 505, so as to electrically connect the controller connector 4 and the PCB 5.

[0042] The reduction gearbox shell 3 is covered on the PCB 5, and the reduction gearbox shell 3 and the motor end cover 2 are fixed. For example, the reduction gearbox shell 3 and the motor end cover 2 are fixed by bolts.

[0043] The motor body 1, the controller connector 4, and the PCB 5 are combined together by the motor end cover 2, so as to greatly save the space of the electric power steering system (EPS) in the whole vehicle cab. The controller is directly connected with the controller connector 4, without the need of separately designing a controller mounting bracket, a controller mounting base, a controller cover, or a connection wire harness, so as to greatly reduce the cost of the electric power steering system (EPS). The phase line 102 of the motor body 1 is directly electrically connected with the PCB 5, and the PCB 5 is directly connected with the controller through the controller connector 4, without the need of setting a connection wire harness between the controller and the motor body 1, so as to reduce the risk of electromagnetic interference in the working process of the electric power steering system (EPS).

[0044] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model. The ordinary skilled in the art can change, modify, replace, and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. A power steering motor for an electric power steering system, characterized in that, The power assist motor includes: a motor body and a motor end cover, wherein the motor end cover is installed on one side of the output shaft of the motor body; In this configuration, the motor end cover protrudes from the motor body along a direction perpendicular to the motor axis, forming a mounting portion located on one side of the motor body. An installation slot is provided in the installation section, and a controller connector is fixed in the installation slot; the controller connector is used to connect to the controller of the electric power steering system. The PCB board is fixed on the side of the motor end cover away from the motor body, the controller connector is electrically connected to the PCB board, and the phase wire of the motor body is electrically connected to the PCB board.

2. The power assist motor according to claim 1, characterized in that, The output shaft of the motor body is mounted with a connector; the connector is used to connect to the reducer.

3. The power assist motor according to claim 1, characterized in that, The motor end cover has a first phase wire hole; the phase wire of the motor body passes through the first phase wire hole and is electrically connected to the PCB board.

4. The power assist motor according to claim 3, characterized in that, The PCB board has a second phase wire hole, and the PCB board is equipped with a phase wire connector; The phase wire of the motor body passes through the second phase wire hole and is electrically connected to the phase wire connector, thereby being electrically connected to the PCB board.

5. The power assist motor according to claim 1, characterized in that, The controller connector includes a first pin, a second pin, and a third pin; the PCB board has holes for the first pin, the second pin, and the third pin. The first pin is inserted into the first pin hole, the second pin is inserted into the second pin hole, and the third pin is inserted into the third pin hole, thereby electrically connecting the controller connector to the PCB board.

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