Automotive electrical control assembly

Abstract

The present invention discloses an automotive electrical control assembly to solve the technical problems of insufficient sealing and stability of existing automotive electrical control modules. The present invention includes a shell and a control circuit board, and a dust cover is fixed on the shell; an isolation cabin is provided on the upper surface of the shell, and the isolation cabin includes side walls and a bottom surface fixedly connected to the upper surface of the shell, and a mounting seat for installing a fuse is provided in the isolation cabin, and a through hole for connecting the mounting seat and the control circuit board is provided on the side wall. Rigid jumpers are used on the circuit board of the present invention for electrical connection, and stainless steel screws with copper sleeves are used on the terminal part. The beneficial effects of the present invention are: compact structure, strong stability, good sealing, and easy installation and use.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile electrical control devices, and in particular to an automobile electrical control assembly. Background Art

[0002] The vehicle's body control module (BCM) collects information from numerous vehicle controls and uses intelligent logic processing to control actuation of various functions, such as the central locking system, windows, and wipers. Existing control modules consist of a printed circuit board (PCB) and an external housing, with connections to external signals provided via terminals on the PCB.

[0003] Due to the complex environment inside the car and the tendency to shake during driving, the physical structure of the control module must be stable and well-sealed. Existing control systems have the following problems in these two aspects: 1. The large fuse in the existing control module is usually fixed to the circuit board, and then a slot is cut in the corresponding position of the shell. This takes up a large area of ​​the circuit board and the slot also affects the sealing; 2. The existing control module dust cover adopts a hook structure, and its hook nose is inserted into the slot by squeezing it hard. It is extremely inconvenient to remove the hook nose, and it is easy to cause the slot and the hook nose to become loose due to irreversible deformation; 3. The terminal in the existing printed circuit board is made of metal copper and fixed with a nut. However, the torque of the copper column is relatively small, so the nut cannot be tightened to the maximum extent, which is easy to loosen. Summary of the Invention

[0004] The present invention provides an automobile electrical control assembly to solve the technical problems of insufficient sealing and stability of existing automobile electrical control modules.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An automotive electrical control assembly is designed, comprising a housing and a control circuit board. A dust cover is fixed to the housing. An isolation cabin is provided on the upper surface of the housing. The isolation cabin comprises side walls and a bottom surface fixedly connected to the upper surface of the housing. A mounting seat for mounting a fuse is provided in the isolation cabin, and a through hole is provided on the side wall for connecting the mounting seat and the control circuit board.

[0007] Preferably, the mounting base includes a fixing plate and screws arranged on the fixing plate for mounting the fuse, and the fixing plate is provided with a through hole at a position corresponding to the through hole, and the through hole is used to lead out the wire of the internal circuit board.

[0008] Preferably, the mounting base and the control circuit board are fixedly connected by a folded copper plate passing through the through hole. The copper plate connection is more stable than other flexible wires.

[0009] Preferably, the isolation cabin is arranged at the edge of the shell, and an external terminal is provided at its front end. The mounting seat and the external terminal are electrically connected through a copper busbar, which is conducive to isolating the mounting seat and the external terminal. A sealing ring is provided on the copper busbar to completely seal the mounting seat.

[0010] Preferably, the external terminal includes a steel bolt and a copper sleeve, the copper sleeve is provided with threads, and the bolt is provided with an external thread that matches the threads. Since copper has a lower resistivity, the copper sleeve is mainly used for conduction, and the bolt is made of stainless steel to increase torque.

[0011] Preferably, an anti-skid protrusion is provided at the bottom of the copper sleeve, and an anti-skid groove cooperating with the anti-skid protrusion is provided on the control circuit board.

[0012] Preferably, the control circuit board includes a circuit board, electrical components, and jumpers. The electrical components are fixed on the circuit board and electrically connected through the aluminum coating on the circuit board; both ends of the jumpers are welded to conductive nodes on the circuit board.

[0013] Preferably, the crossover wire is in the shape of a rigid metal rod, with both ends bent vertically downward.

[0014] Preferably, the dust cover is connected to the shell by a hook, the shell is provided with a clamping platform, the dust cover is provided with a hanging ear, and the clamping platform is fixed with a hanging nose fixedly connected to the hanging ear.

[0015] Preferably, a card slot is provided on the first side of the card table, a card tooth is provided on the second side opposite to the first side, a limiting protrusion cooperating with the card slot is provided on the hanging nose, and a card block cooperating with the card tooth is provided between the hanging nose and the second side.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are:

[0017] 1. The present invention utilizes the upper surface of the shell to form an isolation cabin, and installs the large fuse that occupies a large area of ​​the circuit board in the isolation cabin. The long copper plate is electrically connected to the internal circuit board, so that the large fuse and the internal circuit board form a double-layer structure. The area under the large fuse can still be used for circuit board routing, thereby maximizing the use of the effective area of ​​the circuit board, improving integration, reducing volume, and reducing costs.

[0018] 2. The present invention uses a card table to install the hanging nose to fix the dust cover. The hanging nose is hooked on the side wall of the shell and the card block is filled in the gap. There is no need to forcefully insert and remove the hanging nose into the card table. The structure is stable, easy to disassemble, and not easy to deform.

[0019] 3. In the internal printed circuit board of the present invention, a rigid cross-wire structure is used to replace the existing flexible rubber-coated copper wire structure, which is conducive to forming a unified size and eliminating the need for on-site cutting that may cause length deviation. The terminal structure of the circuit board uses a copper sleeve wrapped around a stainless steel bolt, combining the high torque of stainless steel with the good conductivity of the copper sleeve, solving the problem of the terminal being unable to be tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the automobile electrical control assembly of the present invention.

[0021] Figure 2 This is an exploded schematic diagram of the automotive electrical control assembly of the present invention (excluding the transparent cover).

[0022] Figure 3 The figure is a schematic structural diagram of the nose of the automobile electrical control assembly of the present invention.

[0023] Figure 4 This is a structural diagram of the card station of the automotive electrical control assembly of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the clamping bow of the automobile electrical control assembly of the present invention.

[0025] Figure 6 This is a schematic structural diagram of the terminal of the automotive electrical control assembly of the present invention.

[0026] Figure 7 This is a structural schematic diagram of the crossover wire of the automotive electrical control assembly of the present invention.

[0027] In the figure, 1 is the shell, 2 is the dust cover, 3 is the wire outlet interface, 4 is the first buckle, 5 is the circuit board, 6 is the component socket, 7 is the second buckle, 8 is the connecting plate, 101 is the hanging nose, 102 is the limiting protrusion, 103 is the side wall of the shell, 104 is the slot, 105 is the tooth, 106 is the block, 107 is the filling plate, 201 is the terminal slot, 202 is the mounting seat, 203 is the screw, 204 is the large insurance, 205 is the isolation cabin, 301 is the copper sleeve, 302 is the fixing plate, 303 is the anti-slip gasket, 304 is the bolt, and 305 is the cross-line. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are described below with reference to the accompanying drawings and examples. However, the following examples are only used to illustrate the present invention in detail and are not intended to limit the scope of the present invention in any way.

[0029] Unless otherwise specified, the unit modules, components, structures, and mechanisms involved in the following embodiments are conventional commercially available products.

[0030] Example 1: An automotive electrical control assembly, see Figure 1 and Figure 2The device comprises a housing 1 and a dust cover 2. The bottom plate of the housing 1 is fixed to the housing via a first clip 4 to form a cavity with the outer shell. The circuit board 5 is installed inside the cavity and fixed with screws. The side of the dust cover 2 is clipped to the housing 1 via a second clip 7. This method forms a closed box-like structure consisting of the upper dust cover 2, the intermediate housing 1, and the bottom plate.

[0031] The upper surface of the housing 1 is provided with a component socket 6 for plugging in electrical components. Correspondingly, a plug-in terminal is fixed on the circuit board 5 inside the housing 1. Small fuses, relays and other circuit components are installed in the above-mentioned plug-in terminals through the component socket 6. Two isolation chambers 205 are provided at the front end of the housing 1. They are rectangular grooves on the upper surface of the housing 1. Through holes are provided on one or both sides of the isolation chamber 205, depending on the specific situation of the circuit board's output. The through holes are hollowed out on the side and bottom of the isolation chamber 205. A terminal slot 201 is provided at the front end of the isolation chamber 205 for installing a terminal connected to the outside. The high-current output signal of the circuit board 5 flows to the external terminal through the large fuse 204. The external terminal and the large fuse 204 are electrically conductive through a copper plate. The lower edge of the dust cover 2 is pressed against the copper plate, and is used in conjunction with a sealing strip to seal the isolation chamber 205 and the large fuse 204 inside the housing, improving the waterproof and dustproof performance.

[0032] Isolation chamber 205 houses a large fuse 204, which is secured to mounting base 202. Mounting base 202 comprises a load-bearing plate made of a PCB (printed circuit board) and screws 203 secured thereto. Large fuse 204 is mounted on screws 203 and secured with nuts. A notch is provided at the corner of the load-bearing plate 23 to expose the through-hole of isolation chamber 205. The circuit board 5 within housing 1 extends a terminal through the through-hole of isolation chamber 205 via connecting plate 8. Large fuse 204 on mounting base 202 is secured to this terminal by a gong.

[0033] By using this suspended fuse assembly, the high-power fuse group is elevated and arranged overhead, and the outer shell is used to form an isolation cabin 205, which changes the traditional mode of directly fixing the fuse to the internal circuit board with screws. It no longer occupies the area of ​​the circuit board and the bottom of the isolation cabin can still be used for circuit board wiring. It can reduce the circuit board area and reduce costs while also reducing the difficulty of wiring.

[0034] The terminal structure of the above-mentioned automobile electrical control assembly is shown in Figure 6A slightly wider strip groove in the middle is provided on the fixing plate 302. A protrusion with the same shape as the groove is provided at the bottom of the copper sleeve 301. When in use, the protrusion is inserted into the groove. The copper sleeve 301 is provided with threads, and a stainless steel bolt 304 is screwed into the copper sleeve 301 from below. Furthermore, in order to increase friction, a steel anti-skid pad 303 is provided between the bolt 304 and the fixing plate 302. The terminal structure of the circuit board uses a copper sleeve to wrap the stainless steel bolt, combining the high torque of stainless steel with the good conductivity of the copper sleeve, solving the problem of the terminal being unable to be tightened. The fixing plate 302 can be a PCB substrate, such as the above-mentioned circuit board 5. In this case, the anti-skid pad is welded to the circuit board 5 to increase the hardness of the circuit board 5 and prevent damage to the circuit board 5 when tightening the bolt 304. However, if the fixing plate 302 is a copper plate, since its hardness is high enough, the anti-skid pad 303 does not need to be welded.

[0035] In addition, in addition to the electrical components, the circuit board 5 is also provided with a jumper 305, see Figure 7 The jumper is a rigid metal rod with two ends bent vertically downward, capable of passing through the copper clad on the circuit board to form a path between two conductive points. Replacing the existing flexible, rubber-coated copper wire structure with a rigid jumper structure facilitates uniform size and eliminates the need for on-site cutting that can lead to length deviations.

[0036] The dust cover fixing structure of the above-mentioned automobile electrical control assembly is shown in Figures 3 to 5 A card platform is set on the shell 1 based on its own steps. The card platform includes a groove surrounded by side walls. One side of the groove is the shell 103. A card slot 104 is opened on this side. The limiting protrusion 102 of the hanging nose 101 is inserted into the card slot 104, and the hanging nose 101 and the shell 103 are tightly attached. Then, a card bow is installed in the gap between the hanging nose 101 and the card slot 104 behind it. The card bow includes a card block 106 and a filling plate 107. The card block 106 and the card tooth 105 are locked to ensure that the hanging nose 101 does not shake. A hanging window is opened on the upper part of the hanging nose 101, which cooperates with the hanging ear set on the dust cover 2 to fix the dust cover 2 on the shell 1. When in use, the hanging nose 101 is placed close to the shell 103 and the limiting protrusion 102 is placed inside the card slot 104. Then the card bow is filled in the card platform and the filling plate 107 is in contact with the back of the hanging nose 101. At the same time, the filling plate 107 is also in contact with the side wall of the card platform to ensure that the card bow will not move forward and backward. At this time, the card block 106 and the card tooth 105 cooperate to ensure that the card bow will not move up and down.

[0037] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will appreciate that, without departing from the spirit of the present invention, the specific parameters in the above embodiments may be modified to form multiple specific embodiments, which are all within the common variation range of the present invention and will not be described in detail here.

Claims

1. An automotive electrical control assembly, comprising a housing and a control circuit board, characterized in that: A dust cover is fixed on the shell, an isolation cabin is provided on the upper surface of the shell, the isolation cabin includes a side wall and a bottom surface fixedly connected to the upper surface of the shell, a mounting seat for mounting a fuse is provided in the isolation cabin, and a through hole for connecting the mounting seat and the control circuit board is provided on the side wall of the isolation cabin; The mounting base includes a fixing plate and screws provided on the fixing plate for mounting the fuse, wherein the fixing plate is provided with a through hole at a position corresponding to the through hole; The mounting seat and the control circuit board are fixedly connected by a folded copper plate passing through the through hole; The isolation cabin is arranged at the edge of the shell, and an external terminal is provided at the front end thereof, and the mounting seat and the external terminal are electrically connected via a copper busbar; The dust cover is connected to the shell hook, the shell is provided with a card platform, the dust cover is provided with a hanging ear, and the card platform is fixed with a hanging nose fixedly connected to the hanging ear; A card slot is provided on the first side of the card table, and a card tooth is provided on the second side opposite to the first side. A limiting protrusion that cooperates with the card slot is provided on the hanging nose, and a card block that cooperates with the card tooth is provided between the hanging nose and the second side.

2. The automotive electrical control assembly according to claim 1, characterized in that: The external terminal comprises a steel bolt and a copper sleeve, wherein the copper sleeve is provided with threads, and the bolt is provided with external threads matching the threads.

3. The automotive electrical control assembly according to claim 2, characterized in that: The bottom of the copper sleeve is provided with an anti-skid protrusion, and the control circuit board is provided with an anti-skid groove that cooperates with the anti-skid protrusion.

4. The automotive electrical control assembly according to claim 1, characterized in that: The control circuit board includes a circuit board, an electrical component, and a jumper. The electrical component is fixed on the circuit board and electrically connected through the aluminum coating on the circuit board; both ends of the jumper are welded to the conductive nodes on the circuit board.

5. The automotive electrical control assembly according to claim 4, characterized in that: The crossover wire is in the shape of a rigid metal rod, with both ends bent vertically downward.

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