A connection structure of a power steering controller for an automobile

Abstract

The utility model discloses a kind of connection structure of automobile power steering controller, the end of the shell of motor is equipped with convex part, the side of convex part is located on shell and forms gluing area, first connecting end is equipped on motor and protrudes convex part, PCBA board is set on convex part, and it is equipped with through-hole for first connecting end to pass through, and second connecting end connected with first connecting end, end shell is set on shell, and after end and shell abut, the side wall between convex part is formed and is contained cavity, sealing glue layer is bonded in contained cavity.The utility model is formed with convex part on the shell of motor, and the gap between the side wall of convex part and the inner wall of end shell forms contained cavity for filling sealing glue, without setting sealing glue groove on the shell of motor to simplify the structure of motor, and increase the area of PCBA board, can reduce product overall axial dimension, realize light weight.

Description

Technical Field

[0001] This utility model relates to the field of automotive steering controller technology, and in particular to a connection structure for an automotive power steering controller. Background Technology

[0002] Automotive power steering controllers are used in electric power steering systems and are installed in the driver's cabin, requiring strict control over size and cost. Existing products suffer from insufficient space utilization due to inadequate space constraints. Soldering the power pins and PCBA board typically involves tin soldering, necessitating copper sheet structures for the pins, which increases cost and is prone to solder splatter, causing short circuits. Furthermore, existing products require sealing grooves on the connection surface for the controller cover's connection and sealing, increasing both the difficulty of component manufacturing and the amount of adhesive used. Utility Model Content

[0003] The purpose of this utility model is to provide a connection structure for an automotive power steering controller. A protrusion is formed on the motor housing, and a cavity is formed by the gap between the side wall of the protrusion and the inner wall of the end shell for filling with sealant. This simplifies the structure of the motor by eliminating the need to set a sealant groove on the motor housing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a connection structure for an automotive power steering controller, comprising:

[0005] The motor has a protrusion at one end of its housing, one side of which forms a glue-applying area on the housing. The motor also has a first connecting end extending out of the protrusion.

[0006] The PCBA board is disposed on the protrusion and has a through hole for the first connecting end to pass through, and a second connecting end connected to the first connecting end.

[0007] An end shell is disposed on the housing, and after its end abuts against the housing, it forms a receiving cavity between itself and the side wall of the protrusion, and a sealing adhesive layer is bonded inside the receiving cavity.

[0008] As a further optimization, the first connection end is a copper wire, and the second connection end is a plug-in terminal.

[0009] As a further optimization, the PCBA board is provided with a socket, and the second connection end is provided with a post, which is inserted into the socket.

[0010] As a further optimization, at least one laterally extending protrusion is formed on at least one side wall of the second connecting end, which can improve the consistency of current during welding of the first connecting end and the second connecting end and improve the welding quality.

[0011] As a further optimization, the protrusion has a square structure, and the projection of the PCBA board along the central axis of the motor is located within the projection of the protrusion along the central axis of the motor.

[0012] As a further optimization, the distance between the outer contour of the PCBA board projected along the central axis of the motor and the outer contour of the projection of the protrusion along the central axis of the motor is d, 0≤d≤5mm, so that the PCBA board has a larger area.

[0013] As a further optimization, the PCBA board is provided with multiple first through holes, and the housing is provided with multiple first locking holes. The PCBA board is fixed to the housing by bolts passing through the first through holes and extending into the first locking holes. The end shell is provided with multiple second through holes, and the housing is provided with multiple second locking holes. The end shell is fixed to the housing by bolts passing through the second through holes and extending into the second locking holes.

[0014] As a further optimization, the housing and / or the protrusion are provided with multiple positioning posts, and the PCBA board is provided with multiple positioning holes. The positioning holes are fitted onto the positioning posts, which can realize the precise docking of the PCBA board and / or the end shell with the housing.

[0015] As a further optimization, the sidewall of the end shell and the sidewall of the housing are respectively provided with a first outer edge and a second outer edge. When the end shell abuts against the housing, the first outer edge abuts against the second outer edge, and the sidewalls of the first outer edge and the second outer edge are flush.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. A protrusion is formed on the motor housing, and a cavity is formed between the side wall of the protrusion and the inner wall of the end shell to fill the sealant. This simplifies the structure of the motor by eliminating the need to set a sealant groove on the motor housing.

[0018] 2. In a specific embodiment, the first connection end is a copper wire structure instead of a copper sheet structure for the motor power supply PIN, and the second connection end is a plug-in terminal. The structure is simple, the position is easy to adjust, and it is beneficial for resistance welding.

[0019] 3. In one particular embodiment, increasing the area of ​​the PCBA board can reduce the overall axial dimension of the product, thereby achieving weight reduction. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention.

[0021] Figure 2This is an exploded view of the present invention.

[0022] Figure 3 This is a cross-sectional view of the present invention.

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0024] Figure 5 This is a diagram showing the connection structure between the PCBA board and the motor of this utility model.

[0025] Figure 6 This is a schematic diagram showing the connection between the first connecting end and the second connecting end of this utility model. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figures 1 to 6 As shown, a connection structure for an automotive power steering controller includes a motor 10, a PCBA board 20, and an end shell 30. The end of the housing of the motor 10 is provided with a protrusion 11. One side of the protrusion 11 forms an adhesive application area 100 on the housing of the motor 10. The motor 10 is provided with a first connecting end 12 extending out of the protrusion 11. The PCBA board 20 is disposed on the protrusion 11 and is provided with a through hole 202 for the first connecting end 12 to pass through, and a second connecting end 21 connected to the first connecting end 12. The end shell 30 is disposed on the housing of the motor 10, and its connecting end 31 abuts against the housing of the motor 10 to form a receiving cavity 300 between it and the side wall of the protrusion 11. A sealant layer 32 is bonded inside the receiving cavity 300.

[0028] In this invention, the PCBA board 20 is connected to the motor 10, and after being connected to the motor 10 via the end shell 30, the PCBA board 20 is placed inside, forming the connection structure of the entire automotive power steering controller. In this application, a protrusion 11 is formed at the end of the motor 10's housing, and an adhesive application area 100 is formed on the side of the protrusion 11. After applying sealant to the adhesive application area 100, during the connection process of the end shell 30's connecting end 31 abutting against the motor 10's housing, the sealant between the end shell 30 and the motor 10's housing is squeezed, and sealant remains in the gap between them. Furthermore, since the end shell 30 abuts against the motor 10's housing and forms a receiving cavity 300 between it and the side wall of the protrusion 11, initially... The sealant located at the receiving cavity 300, and the sealant extended towards the receiving cavity 300 after being compressed, will form a sealant layer 32 within the receiving cavity 300 that at least fills the space between the sidewall of the protrusion 11 and the sidewall of the end shell 30, thereby achieving a sealing effect within the end shell 30. The above arrangement can simplify the connection surface structure between the end cover 30 and the motor 10. The motor 10 does not need to be provided with a sealant groove, but the sealant can be directly applied to the connection surface between the motor 10 and the end cover 30 to form an overflow channel and a receiving space, which simplifies the structure and reduces the amount of sealant used.

[0029] This invention features a protrusion 11 formed on the housing of the motor 10. The protrusion 11 can be used to support the PCBA board 20, and the gap between the side wall of the protrusion 11 and the inner wall of the end shell 30 forms a receiving cavity 300 for filling with sealant. The gap between the end shell 30 and the housing of the motor 10 can also be filled with sealant, resulting in a better sealing effect. At the same time, the structure of the motor 10 is simplified because there is no need to set a sealant groove on the housing of the motor 10.

[0030] For the connection structure between the motor 10, PCBA board 20, and end shell 30, it is preferable to provide multiple first through holes 201 on the PCBA board 20 and multiple first locking holes 101 on the housing of the motor 10. The PCBA board 20 is fixed to the housing of the motor 10 by bolts passing through the first through holes 201 and extending into the first locking holes 101. Similarly, the end shell 30 is provided with multiple second through holes 301 and multiple second locking holes 102 on the housing of the motor 10. The end shell 30 is fixed to the housing of the motor 10 by bolts passing through the second through holes 301 and extending into the second locking holes 102. The above bolt connection method can stably connect the PCBA board 20 and the end shell 30 to the housing of the motor 10.

[0031] Furthermore, the protrusion 11 is provided with two positioning posts 13, and the PCBA board 20 is provided with two positioning holes 203. The positioning holes 203 are fitted onto the positioning posts 13, which can realize the precise positioning of the PCBA board 20 and the motor 10, and ensure the accurate connection between the two.

[0032] In one embodiment of this utility model, the first connecting end 12 is preferably a copper wire and the second connecting end 21 is a plug-in terminal. The two are connected by welding, which can change the power PIN of the motor 10 from a copper sheet structure to a copper wire structure. The structure is simple and the position is easy to adjust, which is beneficial for resistance welding with the second connecting end 21.

[0033] Based on the above configuration, the PCBA board 20 is provided with a socket 204, and the lower end of the second connection end 21 is provided with a post 212. The post 212 is inserted into the socket 204. The resistance soldering terminals on the PCBA board 20 are in the form of plug-in terminals, which facilitates the installation of the second connection end 21. Moreover, since the second plug-in end 21 is inserted into the socket 204 on one hand and soldered to the first connection end 12 on the other hand, the stable installation of the second connection end can be guaranteed.

[0034] Furthermore, at least one laterally extending protrusion 211 is formed on at least one side wall of the second connecting end 21, which can improve the consistency of current during welding and improve the welding quality.

[0035] Preferably, the protrusion 11 has a square structure, which covers the housing of the motor 10 as much as possible while ensuring the area of ​​the adhesive coating area 100. It has a large area, and the projection of the PCBA board 20 along the central axis of the motor 10 is located within the projection of the protrusion 11 along the central axis of the motor 10. This can avoid the PCBA board 20 interfering with the end shell 30 during installation because it protrudes from the protrusion 11. It can also change the installation area of ​​the PCBA board 20 from a circle in the extension direction of the motor 10 to a square. Furthermore, the distance between the outer contour of the projection of the PCBA board 20 along the central axis of the motor 10 and the outer contour of the projection of the protrusion 11 along the central axis of the motor 10 is d, 0≤d≤5mm. That is, the shape of the PCBA board 20 is similar to the shape of the protrusion 11. Without increasing the maximum radial dimension, the area of ​​the PCBA board 20 for mounting electronic components is increased, the axial length is reduced, the overall structure is compact, and lightweighting is achieved.

[0036] In addition, a first outer edge 311 and a second outer edge 101 are respectively provided on the side wall of the connecting end 31 of the end shell 30 and the side wall of the motor 10 housing. When the end shell 30 abuts against the housing of the motor 10, the first outer edge 311 abuts against the second outer edge 101, and the side walls of the first outer edge 311 and the second outer edge 101 are flush. The arrangement of the first outer edge 311 and the second outer edge 101 can increase the contact area between the end shell 30 and the housing of the motor 10, which on the one hand ensures the mutual support stability between the two, and on the other hand, the larger contact area can achieve a better sealing effect.

[0037] It should be noted that this application is for the optimization of the connection structure between the motor 10, PCBA board 20 and end shell 30. Therefore, the structure on PCBA board 20 is omitted from the display, and the specific structure and connection position of some electronic components are not shown.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connection structure for an automotive power steering controller, characterized in that, include: The motor has a protrusion at one end of its housing, one side of which forms a glue-applying area on the housing. The motor also has a first connecting end extending out of the protrusion. The PCBA board is disposed on the protrusion and has a through hole for the first connecting end to pass through, and a second connecting end connected to the first connecting end. An end shell is disposed on the housing, and after its end abuts against the housing, it forms a receiving cavity between itself and the side wall of the protrusion, and a sealing adhesive layer is bonded inside the receiving cavity.

2. The connection structure of the automotive power steering controller according to claim 1, characterized in that, The first connection end is a copper wire, and the second connection end is a plug-in terminal.

3. The connection structure of the automotive power steering controller according to claim 1 or 2, characterized in that, The PCBA board is provided with a socket, and the second connection end is provided with a post, which is inserted into the socket.

4. The connection structure of the automotive power steering controller according to claim 1 or 2, characterized in that, At least one laterally extending protrusion is formed on at least one side wall of the second connecting end.

5. The connection structure of the automotive power steering controller according to claim 1, characterized in that, The protrusion has a square structure, and the projection of the PCBA board along the central axis of the motor is located within the projection of the protrusion along the central axis of the motor.

6. The connection structure of the automotive power steering controller according to claim 1 or 5, characterized in that, The distance between the outer contour of the PCBA board projected along the central axis of the motor and the outer contour of the protrusion projected along the central axis of the motor is d, where 0≤d≤5mm.

7. The connection structure of the automotive power steering controller according to claim 1, characterized in that, The PCBA board has multiple first through holes, and the housing has multiple first locking holes. The PCBA board is fixed to the housing by bolts that pass through the first through holes and extend into the first locking holes. The end shell has multiple second through holes, and the housing has multiple second locking holes. The end shell is fixed to the housing by bolts that pass through the second through holes and extend into the second locking holes.

8. The connection structure of the automotive power steering controller according to claim 1 or 7, characterized in that, The housing and / or the protrusion are provided with a plurality of positioning posts, and the PCBA board is provided with a plurality of positioning holes, the positioning holes being fitted onto the positioning posts.

9. The connection structure of the automotive power steering controller according to claim 1, characterized in that, The end shell and the housing are respectively provided with a first outer edge and a second outer edge. When the end shell abuts against the housing, the first outer edge abuts against the second outer edge, and the side walls of the first outer edge and the second outer edge are flush.

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