JP4520687B2 - Electrical equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The invention relates to an electrical device, in particular a control device, of the type described in the superordinate concept of claim 1.
[0002]
[Prior art]
A device of this type is known, for example, from GB 2319897A, in which an electrical device provided for the control of the hydraulic component in the motor vehicle is used for the electrical components. Two support portions are provided. A plate-shaped first support portion made of plastic is provided with a large electric component in the form of a magnet coil for controlling the valve and a strip-shaped metal conductor member, and the conductor member is a magnet coil. And it is connected to the contact member of the connector arrange | positioned at the 1st support part. An electronic circuit part in the form of a substrate on which electrical or electronic components are mounted is arranged in the receiving part of the second support part. The pin-shaped contact member of the connector disposed on the first support portion passes through the notch of the second support portion and is brazed to the connection portion on the opposite side of the first support portion of the substrate. Yes.
[0003]
A disadvantage of the known device is that the production costs are particularly high. Furthermore, the contact member of the connector must be electrically connected to the conductor member of the first support portion. The second support portion is then inserted into the first support portion provided with the substrate. In this case, a pin-like sensitive contact member must be passed through the notch in the second support part and a small hole in the substrate, which requires precise alignment between the support parts. Furthermore, the support parts must be mechanically connected to each other by screws. A brazing process is then necessary to electrically connect the contact member of the connector and the substrate.
[0004]
【The invention's effect】
Based on the configuration of the invention as claimed in claim 1 of the electrical device, the two support parts of the electrical device can be mechanically and electrically connected to each other by means of a clamping connection or a plug-in connection. It is possible and advantageous in this case to omit expensive additional measures, such as brazing or welding, for making electrical contact between the components arranged on both support parts . For this purpose, in the electrical device according to the invention, the contact member is fixed to the second support part and is directly in the direction perpendicular to the support wall of the first support part. It can be electrically and mechanically connected to the conductor member of the part by clamping contact or clamping contact. It is advantageous to make electrical contact at the same time during the assembly of the support part, which may for example be formed as a casing part.
[0005]
Advantageous embodiments of the invention are described in claim 2 and below.
[0006]
Although the clamping contact may be formed on the conductor member as well as on the contact member, the section of the contact member extending towards the conductor member has a clamping contact that can be fitted perpendicularly to the conductor member. . This has the advantage that the conductor member can be produced, for example, as a metal grid-like stamped product that can be produced easily and economically. During the assembly of the device, a contact member arranged on the second support part and having a clamping contact is pressed onto the grid stamped product by the mounting of the second support part. In an advantageous embodiment, the clamping contact is formed in a fork shape with two clamping legs, the distance between both clamping legs being the contact of the conductor member to be frictionally coupled with the clamping legs. It is defined slightly smaller than the width of the section. The clamp contact may be configured to plastically deform when the clamp contact is placed over the contact section of the conductor member, i.e., pressed, whereby an airtight contact is achieved on one side and contact on the other side. The surface is enlarged. As a result, corrosion at the contact location is effectively avoided and contact resistance is reduced.
[0007]
In a further advantageous embodiment, the support wall of the first support part with the conductor member has a notch, in which the section of the contact member extending towards the support wall or the conductor member, It is inserted for contact with the contact section of the conductor member. The notch may advantageously form a guide, the guide surrounding the section of the contact member inserted into the notch from the side, whereby the contact member is displaced in the longitudinal direction of the conductor member. That is, it is securely held against movement. As a result, relative movement between the contact member and the conductor member (which impairs the function of the electrical connection) is reliably avoided.
[0008]
In order to be able to apply a large pressing force when the contact member is applied to the conductor member of the first support part, the notch is advantageously provided with a transverse web extending parallel to the conductor member; The contact section of the conductor member is in contact with the side of the transverse web directed to the second support part.
[0009]
The first support part made of plastic and provided with a support wall is economically manufactured as an injection-molded product in which conductor members formed as a grid punched part or a grid stamped part are embedded together. In this case, the contact section of the conductor member is at least partly stripped, i.e. exposed, of the plastic coating.
[0010]
A compact and flat structure is achieved by placing an electrical or electronic component on the side of the support wall opposite the second support portion. Therefore, it is possible to arrange the electrical or electronic component and the circuit part in two parallel planes spatially separated by the support wall of the first support part. The first support part preferably has a first receiving part on the opposite side of the support wall from the second support part, and an electrical or electronic component is arranged on the receiving part. Yes. In the first receiving part, for example, heavy capacitors, coils, resistors and separate electrical components may be arranged stably and vibration-proof.
[0011]
Electronic circuit parts, such as a substrate or ceramic substrate (hybrid) mounted with electrical or electronic components, or any other support substrate mounted with a microprocessor, output transistor and other components May be arranged on the side of the second support part directed towards the first support part. The second support portion may be formed as a metal plate that also serves to derive heat from the circuit portion.
[0012]
It is advantageous if the second support part is adapted to rest on the first support part, thereby forming a closed casing inner chamber that houses the electronic circuit part. Thus, the attachment of the second support part to the first support part and the casing assembly serve for electrical connection. The formed casing inner chamber may be sealed to the outside by a seal disposed between the first support portion and the second support portion.
[0013]
A section of the contact member disposed on the second support portion may be at least partially embedded in a retaining portion made of an insulating material fixed to the second support portion. In this case, the second support part may be, for example, a metal plate that serves as a cooling body.
[0014]
Advantageously, each section of the contact member arranged on the second support part has a leg that is bent parallel to the circuit part and embedded in the holding part made of insulating material, In this case, the portion of the leg that is not covered with the insulating material is electrically connected to the circuit portion via at least one bonding wire.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of an electronic control device for the control of various vehicle functions installed in an electrical device, for example an automobile. The device has a first support part 1, which is formed as an injection-molded article made of plastic. The first support portion 1 has a support wall 4, an annular first side wall 11 protruding from one side of the support wall, and an annular second side wall 12 protruding from the other side. An annular first side wall 11 cooperates with the support wall 4 to form a first receptacle 20 for the electrical or electronic component 3, which receptacle uses a cover part 9. Or by attachment to another suitable component, resulting in a closed casing chamber.
[0016]
A metallic conductor member 5 formed as a grid-like stamped product or a grid-like stamped product is embedded in the support wall 4, and the conductor member extends substantially parallel to the support wall 4. This does not exclude that the bent end section 15 of the conductor member protrudes from the support wall 4 beyond the plane of the support wall 4 toward the component 3. The conductor member 5 serves as an electrical connection between the electrical / electronic component members 3 and the connection between the component member and the circuit portion 6, and is configured as an insert made of a punched product. ing. In the production of the first support part 1, the conductor member 5 is mounted in an injection mold and surrounded by insulating plastic except for the contact sections 15, 5 ′. It is also possible to adhere the conductor member 5 to the support wall 4, to melt it by heating, or to arrange it on the support wall 4 in another form. The electrical / electronic component 3 includes heavy capacitors, resistors, transistors or other components, and the contact 13 of these components is electrically connected to the contact section 15 of the conductor member 5, for example, welding Connected by.
[0017]
The electrical device further has a second support part 2 on which an electronic circuit part 6 is arranged. As the electronic circuit portion 6, for example, a substrate on which an electric / electronic component 16 is mounted, a ceramic substrate (hybrid), or any other sub on which an electric / electronic component is mounted A straight may be provided. The second support portion 2 is substantially formed as a metal plate, and has a notch or a recessed portion 21 on the side where the circuit portion 6 is provided, and the insulating material holding portion 8 in the recessed portion. Is accommodated, and the contact member 7 is disposed on the second support portion 2 via the insulating material holding portion. A contact member (contact member) 7 protrudes towards the support wall 4 of the first support part 1 and a second support part 2 and a circuit part on the support part that are bent at right angles from the part 6 has a section 28 extending in parallel to the section 6, and the section extending in parallel is partially embedded in the holding part 8 made of insulating material. A portion 27 of the leg portion 28 not covered with an insulating material is electrically connected to the circuit portion 6 via the bonding wire 18. A contact member 7 is used for electrical connection between the circuit portion 6 and the conductor member 5.
[0018]
As can be seen in particular in FIG. 2, the section 17 of the contact member 7 facing the support wall 4 of the first support part 1 has a fork-like clamping contact formed by two legs 17 parallel to each other. I have. The spacing between the legs is defined to be slightly smaller than the width of the contact section 5 'of the conductor member 5, so that the legs can be frictionally connected to the contact section, i.e. clamped.
[0019]
For connection between the conductor member and the contact member, the support wall 4 has a notch 14 through which the contact section 5 'of the conductor member 5 is accessible. By placing the second support portion 2 on the first support portion 1, the leg portion 17 of the contact member enters the notch 14. In this case, the funnel-shaped edge 41 on the side facing the second support portion 2 of the notch 14 of the support wall 4 serves to facilitate the insertion of the leg 17. Each two legs 17 are guided by the inner wall of one notch 14 and are slid and squeezed on subsequent covering to the contact section 5 'to surround the contact section 5' and between the legs. Tighten the contact section tightly. In order to facilitate the application of the clamping leg 17 to the contact section 5 ′, the end of the clamping leg has a chamfer 29. A contact section 5 ′ is supported by a lateral web 40, which bridges the notch 14 on the side of the support wall 4 opposite the second support part 2. In crimping the two support parts together, a force F is applied, as shown in FIG. 2, which causes the leg 17 to slide along the contact section 5 ', causing the contact section to move between the legs. Tighten to the friction connection. The lateral web 40 makes it possible to set the pressing force F to be extremely large. As a result, it is possible to apply a very large clamping force (clamping force) as a whole. Advantageously, the clamping leg 17 is plastically deformed by the force F during the fitting, so that the clamping leg 17 is in airtight contact with the contact section 5 ′ of the conductor member 5. Both support parts 1 and 2 are pressed against each other so that the second support part 2 is in contact with the annular side wall 12, so that a closed casing inner chamber 22 is formed, in the casing inner chamber. A circuit portion 6 is arranged. An annular seal 19 between the side wall 12 of the first support part 1 and the second support part 2 seals the casing inner chamber 22 from the outside, and increases the stability of the mechanical joint. ing.
[0020]
As is apparent from FIGS. 1 and 2, the inner wall of the notch 14 surrounds the leg portion 17 so that the leg portion is not allowed to move, that is, shift along the conductor member 5. The relative movement between the first support part 1 and the contact member 7 that would impair the electrical connection is prevented by the shape of the notches 14.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of an electrical device according to the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
[Explanation of symbols]
1, 2 support parts, 3 component members, 4 support walls, 5 conductor members, 5 'contact sections, 6 circuit parts, 7 contact members, 8 insulating material holding parts, 11, 12 side walls, 13 contact parts, 14 notches , 15 end sections, 16 components, 17 sections, 18 bonding wires, 19 seals, 21 recessed sections, 22 casing inner chambers, 27 parts, 28 sections, 29 chamfered sections, 40 horizontal webs

Claims (17)

An electrical device,
It has a first support part (1), the support part comprises a support wall (4), on the support wall an electrical or electronic component (3) as well as the component (3) A metallic conductor member (5) electrically connected to the support wall (4) and extending substantially parallel to the support wall (4),
A second support part (2) attachable to the first support part (1), the second support part comprising an electronic circuit part (6) and a circuit part ( 6) and a contact member (7) for electrical connection between the conductor member (5) disposed on the support wall (4),
The contact member (7) is fixed to the second support part (2) and clamped to the conductor member (5) of the first support part (1) in a direction perpendicular to the support wall (4) The contact is directly and electrically connected as follows, that is, the clamp leg (17) of the contact member (7) is plastically deformed to the contact section (5 ') of the conductor member (5). It consists of a first support part (1) and a second support part (2) in airtight contact , in this case by attaching a second support part (2) to the first support part (1). Assembling of the casing part and electrical contact are performed, and a closed casing inner chamber (22) for accommodating the electronic circuit part (6) is formed in the casing part. Characteristic electrical device.   2. The electrical device as claimed in claim 1, wherein the section (17) of the contact member (7) extending towards the conductor member (5) has a clamping contact which can be fitted perpendicularly to the conductor member (5). .   The clamp contact is formed in a fork shape with two clamp legs (17), and the distance between both clamp legs is a frictional force coupling with the clamp legs (17) of the conductor member (5). 3. The electrical device as claimed in claim 2, wherein the electrical device is defined to be slightly smaller than the width of the contact section (5 ').   The electrical contact according to any one of claims 1 to 3, wherein the clamping contact (17) is plastically deformable so as to be brought into airtight contact with the contact section (5 ') of the conductor member (5). Equipment.   The support wall (4) has a notch (14) in which a section (17) of the contact member (7) extending towards the support wall (4) is formed in the conductor member (5). 5. The electrical device as claimed in claim 1, wherein the electrical device is adapted for insertion into contact with a contact section (5 ').   A notch (14) in the support wall (4) forms a guide, and the section (17) in which the guide is inserted into the notch (14) of the contact member (7) is divided into the support wall (4). The electrical device according to claim 5, wherein the contact member (7) is securely held against displacement in the longitudinal direction of the conductor member (5).   The notch (14) comprises a transverse web (40) extending parallel to the conductor member (5), the contact section (5 ') of the conductor member (5) being a second of the transverse web (40). 6. The electrical device according to claim 5, in contact with the side directed to the support part (2).   The support wall (4) is made of plastic and comprises a conductor member (5) formed as a grid-like stamped part and embedded in the support wall, in this case the contact section of the conductor member (5) 8. The electrical device as claimed in claim 1, wherein (5 ', 15) is at least partially removed from the plastic coating.   Electricity according to any one of the preceding claims, wherein the electrical or electronic component (3) is arranged on the opposite side of the support wall (4) from the second support part (2). Equipment.   The first support part (1) has a first receiving part (20) on the opposite side of the support wall (4) from the second support part (2), and the receiving part is electrically or 10. The electrical device according to claim 9, wherein an electronic component (3) is arranged.   10. The electrical device according to claim 9, wherein the electronic circuit part (6) is arranged on the side of the second support part (2) facing the first support part (1).   A second support part (2) is adapted to rest on the first support part (1), whereby a closed casing inner chamber (22) that houses an electronic circuit part (6). The electrical device according to claim 11, wherein:   Electricity according to claim 12, wherein the casing inner chamber (22) is sealed from the outside by a seal (19) arranged between the first support part (1) and the second support part (2). Equipment.   Within the holding part (8) made of insulating material, at least partly of the section (28) arranged on the second support part (2) of the contact member (7) fixed to the second support part (2) The electrical device according to claim 1, which is embedded in the electrical device.   A section (28) of the contact member (7) arranged on the second support part (2) is bent parallel to the circuit part (6) and embedded in the holding part (8) made of insulating material. A portion (27) of the leg (28) that is not covered with insulating material is connected to the circuit portion (6) via at least one bonding wire (18). The electrical device of claim 14, which is electrically connected.   16. The electrical device according to claim 14, wherein the second support part (2) is formed as a metal support plate.   17. The electrical device as claimed in claim 16, wherein the holding part (8) made of insulating material is arranged in a recess (21) on the side of the support plate facing the first support part (1).

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