Brushless electric supporting rod integrated with ECU (Electronic Control Unit) control

Abstract

The utility model discloses a brushless electric supporting rod integrated with ECU control, which comprises a fixedly arranged inner sleeve and a driving motor defined in the inner sleeve, and the inner sleeve is provided with a first control assembly and a second control assembly at the rear part of the driving motor. The first control assembly comprises a magnetic pole rotor and a Hall plate which are arranged in the driving motor, the second control assembly comprises an ECU control panel set, a connecting needle is arranged on the Hall plate, and the connecting needle penetrates through the driving motor and is connected with the ECU control panel set.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a brushless electric strut controlled by an integrated ECU. Background Art

[0002] The electric strut in the existing technology adopts a brushed motor. Since friction occurs between the brush and the collector ring, there are problems of wear and noise. This type of brushed electric strut is connected to a Hall plate on the outside of the brushed motor, and after leading out the leads on the Hall plate, it is connected to the ECU controller outside the electric strut. The wiring harness needs to be led out at the ball socket at the end of the electric strut. The ECU controller needs to be set outside the electric strut and a space needs to be designed and arranged in the vehicle body. During the maintenance work of the electric strut, other parts of the vehicle body need to be disassembled to check whether the ECU controller is working normally, which increases the difficulty and cost of maintenance. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a brushless electric strut with integrated ECU control.

[0004] The above technical purpose of the present utility model is achieved through the following technical solutions: a brushless electric strut with integrated ECU control, comprising a fixed inner sleeve and a drive motor defined in the inner sleeve, wherein the inner sleeve is provided with a first control component and a second control component at the rear of the drive motor, wherein the first control component comprises a magnetic pole rotor and a Hall plate arranged inside the drive motor, and the second control component comprises an ECU control board group, wherein the Hall plate is provided with a connecting pin, and the connecting pin passes through the drive motor and is connected to the ECU control board group.

[0005] Furthermore, the drive motor includes an outer end cover assembly and a stator frame for constraining the stator group. The pole rotor is inserted into the stator frame. A first control area for accommodating a first control assembly is defined between the stator frame and the outer end cover assembly.

[0006] Furthermore, a ball-and-socket connector is provided at the end of the inner sleeve, a control bracket is abutted between the ball-and-socket connector and the outer end cover assembly, and a second control area for accommodating a second control assembly is defined within the control bracket.

[0007] Furthermore, one end of the connecting pin is fixedly plugged into the Hall plate, and the connecting pin passes through the outer end cover assembly and is fixedly plugged into the ECU control board assembly.

[0008] Furthermore, a connecting wire harness extends from the ECU control panel assembly, and a wire harness sleeve is provided on the ball-and-socket connector for leading out the connecting wire harness, and a wire harness connector is provided at the end of the wire harness sleeve.

[0009] Furthermore, the ECU control board assembly includes a rotation-stopping groove arranged on the circumferential side, and the inner wall of the control bracket is provided with a rotation-stopping protrusion that matches the rotation-stopping groove.

[0010] Furthermore, the outer end cover assembly includes a motor end cover, and a buffer pad abutting against the end and peripheral side of the motor end cover. The buffer pad abuts against the control bracket and forms a heat-insulating gap between the buffer pad and the control bracket.

[0011] Furthermore, a positioning recess and a positioning protrusion are provided on the end of the control bracket facing the outer end cover assembly, and a positioning fitting portion matching the positioning recess and the positioning protrusion is provided on the end of the outer end cover assembly, and the positioning recess and the positioning protrusion are arranged adjacent to each other in radial direction.

[0012] Furthermore, the ECU control board group includes at least two control boards and a connecting portion connected between two adjacent control boards. The connecting portion separates the two adjacent control boards and is plugged with the control boards through pins.

[0013] Furthermore, the stator frame is provided with a support leg extending toward the Hall plate, and a slot for the support leg to be inserted into the slot is provided on the peripheral side of the Hall plate. A hook is further extended from the support leg to abut against the end surface of the Hall plate.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] The drive motor of the utility model adopts a brushless motor, which reduces friction and wear during operation, and also provides higher efficiency, lower noise and longer service life;

[0016] In addition, the utility model defines a first control area and a second control area at the rear of the drive motor, embeds the Hall plate inside the drive motor, and defines a second control area between the end of the drive motor and the electric strut, so that the ECU control board group is arranged therein, thereby realizing the embedding of the ECU control board group inside the electric strut, and the Hall plate and the ECU control board group are only spaced apart in the axial direction, and a connecting pin is provided between the two and a corresponding through hole is provided on the outer end cover assembly at the end of the motor, thereby realizing the control connection between the Hall plate and the ECU control board group, thereby improving the space utilization of the electric strut at the rear of the drive motor, and through the arrangement of the utility model, the electric strut can be directly disassembled in its entirety during maintenance and inspection of the electric strut, without the need to remove other covering parts of the vehicle, which helps to simplify the maintenance and repair process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional view of the entirety of the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 4 This is an exploded schematic diagram of the first control assembly and the second control assembly of the present invention;

[0021] Figure 5 It is an exploded schematic diagram of the outer end cover assembly, the ball and socket connector, the first control assembly, and the second control assembly of the present invention;

[0022] Figure 6 This is an exploded schematic diagram of the second control assembly of the present invention;

[0023] Figure 7 This is a schematic structural diagram of the first control component of the present invention;

[0024] Figure 8 This is a cross-sectional view of the drive motor of the present utility model;

[0025] In the figure: 1. Inner casing; 2. Drive motor; 2.1. Stator assembly;

[0026] 3. First control assembly; 3.1. Pole rotor; 3.2. Hall plate; 3.21. Card slot;

[0027] 4. Second control assembly; 4.1. ECU control panel assembly; 4.11. Anti-rotation groove; 4.12. Control panel; 4.13. Connector port; 4.2. Connector pin; 4.3. Connecting wire harness; 4.4. Wire harness connector; 4.5. Wire harness sleeve; 4.6. Connector; 4.61. Pin;

[0028] 5. External end cover assembly; 5.1. Motor end cover; 5.2. Buffer pad; 5.3. Thermal insulation gap; 5.4. Positioning and fitting portion; 5.5. Connection hole;

[0029] 6. Stator frame; 6.1. Support legs; 6.2. Hook;

[0030] 7. First control area; 8. Ball-and-socket connector; 8.1. Position-limiting bump;

[0031] 9. Control bracket; 9.1. Anti-rotation protrusion; 9.2. Positioning protrusion; 9.3. Positioning recess; 9.4. Through hole; 9.5. Limiting groove;

[0032] 10. Second control area; 11. Movable tube; 12. Outer sleeve; 13. Transmission area; 13.1. Reduction gear train; 13.2. Screw assembly; 13.3. Nut; DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be understood that although terms such as upper, middle, lower, top, end, etc. appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for ease of understanding, and are not used to define any direction or order limitation.

[0035] like Figure 1-8 As shown, a brushless electric strut with integrated ECU control includes a fixed inner sleeve 1, a movable tube 11 spliced ​​on the inner sleeve 1, and an outer sleeve 12 sleeved on the inner sleeve 1 and the movable tube 11. A drive motor 2 is provided inside the inner sleeve 1, and a transmission area 13 is defined at the front of the drive motor 2, and a control area is defined at the rear of the drive motor 2. A reduction gear system 13.1 and a screw assembly 13.2 are provided in the transmission area 13, which are sequentially connected to the output end of the drive motor 2. A nut 13.3 is provided on the screw assembly 13.2, and the end of the nut 13.3 is connected to the movable tube 11, so that the screw assembly 13.2 is driven to rotate by the actuation of the drive motor 2, so that the nut 13.3 drives the movable tube 11 to extend or retract relative to the inner sleeve 1.

[0036] In this embodiment, the drive motor 2 is selected as a brushless motor to reduce the volume of the electric strut, greatly reduce noise and electromagnetic radiation, and significantly increase lifespan.

[0037] Among them, the inner sleeve 1 is provided with a first control component 3 and a second control component 4 at the rear of the motor. The first control component 3 and the second control component 4 are specifically arranged at the rear of the drive motor 2, and the first control component 3 and the second control component 4 are arranged at an axial interval with respect to the electric support rod and are separated by a control bracket 9.

[0038] like Figure 2 and Figure 5 and Figure 7 and Figure 8As shown in the figure, as a further explanation of the first control component 3, the first control component 3 includes a magnetic pole rotor 3.1 and a Hall plate 3.2 arranged inside the drive motor 2, wherein the drive motor 2 is further provided with two stator frames 6 fixed to the circumference of the magnetic pole rotor 3.1, the two stator frames 6 are arranged at both ends of the magnetic pole rotor 3.1, and a stator group 2.1 is arranged between the stator frames 6. A rotating shaft extends from the middle of the magnetic pole rotor 3.1, and the Hall plate 3.2 is constrained to the outside of the stator frame 6 located away from the operating end of the drive motor 2.

[0039] The first control assembly 3 detects the number of rotations of the rotating shaft through the rotation of the Hall plate 3.2 and the magnetic pole rotor 3.1 of the drive motor 2, thereby detecting the stroke position of the electric strut. In addition, the stator frame 6 provides an installation position for the Hall plate 3.2 and separates it from the end cover of the motor to form an insulating space, effectively ensuring the stability and reliability of the Hall detection operation.

[0040] Specifically, the drive motor 2 includes an outer end cover assembly 5, which is specifically arranged at the end of the drive motor 2 and closes the inner cavity of the drive motor 2. The stator frame 6 constrains the stator group 2.1 on the side facing away from the Hall plate 3.2, and the pole rotor 3.1 is passed through the stator frame 6. The outer end cover assembly 5, the stator frame 6, and the housing of the drive motor 2 together define a first control area 7 at the end of the drive motor 2, and the first control assembly 3 is accommodated in the first control area 7.

[0041] As an implementation method for positioning and installing the Hall plate 3.2, the stator frame 6 is provided with a support foot 6.1 extending toward the Hall plate 3.2. The circumferential side of the Hall plate 3.2 is provided with a slot 3.21 for the support foot 6.1 to be snapped into. The support foot 6.1 also extends with a hook 6.2 that abuts against the end face of the Hall plate 3.2. There are multiple support feet 6.1, and they are arranged at intervals in the circumferential direction.

[0042] like Figures 4 to 6 As shown, as a further explanation of the second control component 4, the second control component 4 includes an ECU control board group 4.1, a connecting pin 4.2 is provided on the Hall plate 3.2, and a plug connector 4.13 for inserting the connecting pin 4.2 is provided on the ECU control board group 4.1. The connecting pin 4.2 passes through the drive motor 2 and is connected to the plug connector 4.13 of the ECU control board group 4.1; wherein, the connecting pin 4.2 specifically passes through the outer end cover assembly 5 and is then connected to the ECU control board group 4.1 in the second control area 10. The ECU control board group 4.1 forms an electrical control connection with the Hall plate 3.2 through the connecting pin 4.2 to avoid wiring harness connection inside the electric strut.

[0043] Specifically, a ball and socket connector 8 is provided at the end of the inner sleeve 1, and the ball and socket connector 8 is also connected to the end of the outer sleeve 12 and closes the electric strut, wherein a control bracket 9 is abutted between the ball and socket connector 8 and the outer end cover assembly 5, and a second control area 10 for accommodating the second control assembly 4 is defined in the control bracket 9, and the second control area 10 is connected to the ball and socket connector 8 to lead out the wiring harness in the second control area 10.

[0044] Specifically, one end of the connecting needle 4.2 is fixedly plugged into the Hall plate 3.2, and the connecting needle 4.2 passes through the outer end cover assembly 5 and is fixedly plugged into the ECU control board group 4.1. The outer end cover assembly 5 is provided with a connecting hole 5.5 for the connecting needle 4.2 to pass through, and the control bracket 9 is provided with a through hole 9.4 for the connecting needle 4.2 to pass through.

[0045] Optionally, the connecting needle 4.2 includes several spaced-apart connecting units. The connecting hole 5.5 can be set as a small hole matching the outline of the connecting unit, and the through hole 9.4 can be set as a large hole passing through the overall outline of the connecting needle 4.2. Of course, in other embodiments, the through hole 9.4 can also be set as a small hole with the same aperture as the connecting hole 5.5. The purpose of the connecting hole 5.5 and the through hole 9.4 is to allow the connecting needle 4.2 to pass through, and another purpose of the connecting hole 5.5 is to provide connection stability for the connecting needle 4.2.

[0046] from Figure 5 As can be seen in the figure, as an embodiment of the outer end cover assembly 5, the outer end cover assembly 5 includes a motor end cover 5.1, and a buffer pad 5.2 abutting against the end and peripheral side of the motor end cover 5.1. The motor end cover 5.1 closes the housing of the drive motor 2 and defines the first control area 7 together with the housing of the drive motor 2.

[0047] Among them, the buffer pad 5.2 is preferably covered on the motor end cover 5.1, and the buffer pad 5.2 extends radially out of the motor end cover 5.1 and abuts against the inner wall of the inner sleeve 1, thereby reducing the working noise of the drive motor 2. The buffer pad 5.2 abuts against the control bracket 9 in the axial direction and a thermal insulation gap 5.3 is separated from the control bracket 9.

[0048] Combine Figure 2 As shown, as a further implementation of the control bracket 9, the control bracket 9 is provided with a first positioning surface facing the outer end cover assembly 5 of the drive motor 2, and is provided with a second positioning surface facing the ball and socket connector 8, and the control bracket 9 is an enclosing shell with one end open, the open end of which is connected to the ball and socket connector 8 and closed by the ball and socket connector 8, thereby forming a second control area 10, and the connecting needle 4.2 specifically passes through the motor end cover 5.1, the buffer pad 5.2 and the first positioning surface of the control bracket 9, and then enters the second control area 10 and is connected to the ECU control board group 4.1.

[0049] Specifically, a connecting wire harness 4.3 extends from the ECU control board group 4.1, and a wire harness sleeve 4.5 is provided on the ball and socket connector 8 for leading out the connecting wire harness 4.3. The connecting wire harness 4.3 is led out from the ball and socket connector 8 through the wire harness sleeve 4.5 and connected to the external power supply and the vehicle system. A wire harness connector 4.4 is provided at the end of the wire harness sleeve 4.5 to facilitate the modular installation of the electric strut.

[0050] Combine Figure 4 and Figure 5 As shown, as an implementation method of the cooperation between the ECU control board group 4.1 and the control bracket 9, the ECU control board group 4.1 includes a rotation-stop groove 4.11 arranged on the circumferential side, and the inner wall of the control bracket 9 is provided with a rotation-stop protrusion 9.1 that cooperates with the rotation-stop groove 4.11. The positioning and installation of the ECU control board group 4.1 in the control bracket 9 and the position stability are achieved through the rotation-stop groove 4.11 and the rotation-stop protrusion 9.1.

[0051] Specifically, a positioning recess 9.3 and a positioning protrusion 9.2 are provided on the end of the control bracket 9 facing the outer end cover assembly 5. The positioning recess 9.3 and the positioning protrusion 9.2 are specifically arranged on the first positioning surface of the control bracket 9. The end of the outer end cover assembly 5 is provided with a positioning matching portion 5.4 matching the positioning recess 9.3 and the positioning protrusion 9.2. The positioning recess 9.3 and the positioning protrusion 9.2 are arranged adjacent to each other in the radial direction. Through the above improvements, the tightness of the matching between the buffer pad 5.2 and the control bracket 9 is increased, and the shock absorption effect of the buffer pad 5.2 is optimized.

[0052] As one arrangement of the ECU control board assembly 4.1, the ECU control board assembly 4.1 includes at least two control boards 4.12 and a connecting portion 4.6 connected between two adjacent control boards 4.12. The connecting portion 4.6 separates the two adjacent control boards 4.12 and is plugged into the control boards 4.12 via pins 4.61. This arrangement fully utilizes the axial space within the control bracket 9 and avoids overly tight arrangement of the electrical components on the ECU control board assembly 4.1.

[0053] As an implementation method for fixing the control bracket 9 in the electric strut, a limiting groove 9.5 is provided on the second positioning surface of the control bracket 9, and a limiting protrusion 8.1 is provided on the ball and socket connector 8, which is inserted into the limiting groove 9.5. The positioning connection between the ball and socket connector 8 and the control bracket 9 is achieved through the cooperation between the limiting protrusion 8.1 and the limiting groove 9.5. At the same time, the control bracket 9 is also abutted on the buffer pad 5.2. Furthermore, the outer contour of the control bracket 9 matches the inner diameter of the inner sleeve 1. On the premise of keeping the ball and socket connector 8 pressing against the end face of the control bracket 9, the ball and socket connector 8 is riveted to the end of the inner sleeve 1, thereby fixing the ball and socket connector 8, and then fixing the control bracket 9.

[0054] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A brushless electric strut with integrated ECU control, characterized in that: The invention comprises a fixed inner sleeve (1), and a drive motor (2) defined in the inner sleeve (1); the inner sleeve (1) is provided with a first control component (3) and a second control component (4) at the rear of the drive motor (2); the first control component (3) comprises a magnetic pole rotor (3.1) and a Hall plate (3.2) arranged inside the drive motor (2); the second control component (4) comprises an ECU control board group (4.1); a connecting pin (4.2) is provided on the Hall plate (3.2); the connecting pin (4.2) passes through the drive motor (2) and is connected to the ECU control board group (4.1).

2. A brushless electric strut with integrated ECU control as claimed in claim 1, characterized in that: The drive motor (2) comprises an outer end cover assembly (5) and a stator frame (6) for constraining a stator group (2.1); the magnetic pole rotor (3.1) is inserted into the stator frame (6); and a first control area (7) for accommodating a first control assembly (3) is defined between the stator frame (6) and the outer end cover assembly (5).

3. The brushless electric strut with integrated ECU control as claimed in claim 1, characterized in that: A ball-and-socket connector (8) is provided at the end of the inner sleeve (1), a control bracket (9) is abutted between the ball-and-socket connector (8) and the outer end cover assembly (5), and a second control area (10) for accommodating a second control assembly (4) is defined within the control bracket (9).

4. The brushless electric strut with integrated ECU control as claimed in claim 1, characterized in that: One end of the connecting needle (4.2) is fixedly plugged into the Hall plate (3.2), and the connecting needle (4.2) passes through the outer end cover component (5) and is fixedly plugged into the ECU control board assembly (4.1).

5. The brushless electric strut with integrated ECU control as claimed in claim 3, characterized in that: A connecting wire harness (4.3) extends from the ECU control panel assembly (4.1), a wire harness sleeve (4.5) is provided on the ball-and-socket connector (8) for leading out the connecting wire harness (4.3), and a wire harness connector (4.4) is disposed at the end of the wire harness sleeve (4.5).

6. The brushless electric strut with integrated ECU control as claimed in claim 3, characterized in that: The ECU control panel assembly (4.1) comprises a rotation-stopping groove (4.11) arranged on the circumferential side, and the inner wall of the control bracket (9) is provided with a rotation-stopping protrusion (9.1) matching with the rotation-stopping groove (4.11).

7. The brushless electric strut with integrated ECU control as claimed in claim 3, characterized in that: The outer end cover assembly (5) comprises a motor end cover (5.1) and a buffer pad (5.2) abutting against the end and peripheral side of the motor end cover (5.1); the buffer pad (5.2) abuts against the control bracket (9) and forms a heat insulating gap (5.3) between the buffer pad (5.2) and the control bracket (9).

8. The brushless electric strut with integrated ECU control as claimed in claim 3, characterized in that: A positioning recess (9.3) and a positioning protrusion (9.2) are provided on the end of the control bracket (9) facing the outer end cover assembly (5), and a positioning matching portion (5.4) matching the positioning recess (9.3) and the positioning protrusion (9.2) is provided on the end of the outer end cover assembly (5), and the positioning recess (9.3) and the positioning protrusion (9.2) are arranged adjacent to each other in a radial direction.

9. The brushless electric strut with integrated ECU control as claimed in claim 1, characterized in that: The ECU control board group (4.1) comprises at least two control boards (4.12) and a connecting portion (4.6) connected between two adjacent control boards (4.12); the connecting portion (4.6) spaces the two adjacent control boards (4.12) and is plugged with the control boards (4.12) via pins (4.61).

10. The brushless electric strut with integrated ECU control as claimed in claim 2, characterized in that: The stator frame (6) is provided with a support foot (6.1) extending toward the Hall plate (3.2), a slot (3.21) for the support foot (6.1) to be inserted into the slot is provided on the peripheral side of the Hall plate (3.2), and a hook (6.2) is also extended from the support foot (6.1) to abut against the end surface of the Hall plate (3.2).

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