Source: https://patents.google.com/patent/JP4207753B2/en
Timestamp: 2020-04-07 01:12:10
Document Index: 518002654

Matched Legal Cases: ['art 122', 'art 10', 'art 20', 'art 10', 'art 12', 'art 12', 'art 11', 'art 20', 'art 22', 'art 10', 'art 20', 'art 12', 'art 10', 'art 21', 'art 20', 'art 12']

JP4207753B2 - Resin housing structure for electrical circuit equipment - Google Patents
Resin housing structure for electrical circuit equipment Download PDF
JP4207753B2
JP4207753B2 JP2003372946A JP2003372946A JP4207753B2 JP 4207753 B2 JP4207753 B2 JP 4207753B2 JP 2003372946 A JP2003372946 A JP 2003372946A JP 2003372946 A JP2003372946 A JP 2003372946A JP 4207753 B2 JP4207753 B2 JP 4207753B2
JP2003372946A
JP2005135850A (en
純 大西
2003-10-31 Application filed by 株式会社デンソー filed Critical 株式会社デンソー
2005-05-26 Publication of JP2005135850A publication Critical patent/JP2005135850A/en
2009-01-14 Publication of JP4207753B2 publication Critical patent/JP4207753B2/en
The present invention relates to a resin casing structure of an electric circuit device mounted on a vehicle.
Conventionally, various electric circuit devices on which sensors are mounted are mounted on a vehicle. As an example of such an electric circuit device, there is an electric circuit device for collision detection that is mounted on a front portion of a vehicle in which a G sensor for detecting a collision or vibration is mounted in order to deploy an airbag at the time of a vehicle collision. For example, as shown in FIG. 6, a conventional electric circuit device 101 for collision detection includes a circuit portion 112 on which a G sensor is mounted, a connector terminal 113 that electrically connects the circuit portion 112 to the outside, and these. It is formed from a molded resin case 110. Further, a recess 110a is formed on one end side of the resin case 110, and a part of the connector terminal 113 is exposed in a protruding manner in the recess 110a, and a thick mold for attaching to the vehicle on the other end side. The vehicle attachment part 122 which embed | buried this metal bush is provided. The electric circuit device 101 is attached to the front portion of the vehicle via the vehicle attachment portion 122, and a plug on the airbag control device side is inserted into the recess 110a so that the circuit is connected to the airbag control device and the circuit via the connector terminal 113. Electrical connection with the unit 112 is achieved, and a G detection signal detected by the G sensor is transmitted to the airbag control device.
However, since the connector shape and the vehicle mounting shape of the electric circuit device mounted on the vehicle are determined based on the design philosophy of the vehicle manufacturer, the mounting location of the electric circuit device, etc., various shapes of resin cases are required. there is a possibility. For example, assuming 3 types of connector shapes, 2P connector, 4P connector, and 6P connector, and 3 types of metal bushing type, metal bushing thin type, and metal bolt type as vehicle mounting shapes, the type of connector shape Nine types of case shapes obtained by multiplying Equation 3 by the number of types 3 of vehicle mounting shapes are required. Here, FIG. 7 shows nine types of shapes in the electric circuit device, and the vehicle mounting shapes are the metal bush thickness type in (1) to (3), and the metal bush thin type in (4) to (6). , (7) to (9) are metal bolt types, and the connector shape is 2P connector for (1), (4), (7), and 4P connector for (2), (5), (8). , (3), (6), (9) are 6P connectors. In order to mold these nine types of resin cases, nine types of resin molding dies are required. As described above, conventionally, in order to deal with various types of electric circuit devices, it is necessary to produce many types of molding dies, and there has been a problem that a lot of cost is required to produce the molding dies. Further, when the types of shapes of electric circuit devices are increased, a molding die must be prepared each time, and there is a problem that it is difficult to quickly respond.
The problem to be solved is to provide a resin casing structure of an electric circuit device that can cope with various types of shapes with a small number of molding dies.
Hereinafter, each means suitable for solving the above-described problems will be described with additional effects and the like as necessary.
The resin casing structure of an electric circuit device according to the present invention includes an electric circuit on which a sensor is mounted and a connector terminal for electrically connecting the electric circuit to the outside in the resin casing structure of an electric circuit device mounted on a vehicle. The resin connector and the resin case provided with the mounting portion to the vehicle are divided and formed, and the resin connector and the resin case are joined and integrated, and the resin connector The shape of the resin case is selected from a plurality of connector shapes including a 2P connector, a 4P connector, and a 6P connector, and the shape of the mounting portion of the resin case is a metal bush thickness type in which a thick metal bush is embedded, a thin shape There are multiple types of mounting shapes including metal bush thin type with embedded metal bush and metal bolt type with embedded metal bolt Characterized in that it is selected.
Therefore, by joining and integrating the resin connector produced using the resin connector mold and the resin case produced using the resin case mold, the resin casing of the entire electric circuit device is integrated. The number of molds can be reduced as compared with the conventional structure produced with one mold, and thereby the cost required for producing the mold can be reduced. In addition, when a new-shaped electric circuit device can be realized by combining the shape of the existing resin connector and the shape of the resin case, the existing mold for molding the resin connector without creating a new mold. And a mold for molding a resin case, it is possible to quickly cope with an increase in the types of shapes in electric circuit devices.
The shape of the resin connector is preferably selected from a plurality of types of connector shapes including a 2P connector, a 4P connector, and a 6P connector, and the shape of the mounting portion of the resin case is a thick metal bush. It is selected from a plurality of mounting shapes including a metal bush thickness type embedded, a metal bush thin type embedded with a thin metal bush, and a metal bolt type embedded with a metal bolt . Therefore, it is possible to cope with the number of types of electrical circuit devices obtained by multiplying the number of types of connector shapes and the number of types of attachment shapes.
In addition, the resin connector and the resin case are joined by any one of adhesive bonding, laser welding, vibration welding, ultrasonic welding, caulking, or DSI molding. Therefore, the resin connector and the resin case are reliably joined and integrated by any one of the joining methods according to the specifications required for the electric circuit device.
The sensor is preferably a G sensor that detects acceleration. Therefore, in the electric circuit device for collision detection in which the G sensor is mounted, it is possible to cope with a wide variety of connector shapes and attachment shapes with a small number of molding dies.
According to the resin casing structure of the electric circuit device of the present invention, the number of molds can be reduced as compared with the conventional structure in which the resin casing of the entire electric circuit device is produced with one molding die. The cost required for producing the mold can be reduced. In addition, when a new-shaped electric circuit device can be realized by combining the shape of the existing resin connector and the shape of the resin case, the existing mold for molding the resin connector without creating a new mold. And a mold for molding a resin case, it is possible to quickly cope with an increase in the types of shapes in electric circuit devices.
Hereinafter, an embodiment embodying a housing structure of an electric circuit device of the present invention will be described.
An electric circuit device 1 according to an embodiment of the present invention is a collision detection sensor device that is mounted on a front portion of a vehicle and transmits a G detection signal representing occurrence of a collision or vibration to an airbag control device.
The electric circuit device 1 is configured by dividing and forming the connector portion 10 and the case portion 20 and joining and integrating them. Hereinafter, the structure of the connector part 10 and the case part 20, and these joining are demonstrated in order.
The connector part 10 is mainly composed of a connector main body 11 made of a resin material, a circuit part 12 on which a G sensor is mounted, and a connector terminal 13 connected to the circuit part 12.
The connector main body 11 is a resin molded part, and is formed of, for example, PBT (polybutylene terephthalate) resin, nylon resin, or the like. Further, the connector body 11 is formed with a recess 11a into which a plug of a signal transmission cord electrically connected to the airbag control device is inserted.
The circuit unit 12 is formed of a P plate (glass epoxy substrate) on which an electrical circuit for mounting a G sensor and outputting a collision or vibration detected by the G sensor as a G detection signal is formed. The circuit portion 12 is supported and electrically connected by a wire 14 connected to a connector terminal 13 exposed from an end surface of the connector main body 11 opposite to the concave portion 11a. The circuit unit 12 may be configured by adopting a so-called P plate-less type in which the G sensor is directly mounted on the connector body 11 without using the P plate.
The connector terminal 13 is a pin-shaped metal part that is electrically connected to the circuit portion 12 and the wire 14. About half of the connector terminal 13 including one end is exposed in a protruding manner in the recess 11 a of the connector body 11, and the remaining half including the other end is integrally molded and embedded in the connector body 11. Has been. When the plug of the signal transmission cord connected to the airbag control device described above is inserted into the recess 11a, the plug and the exposed portion of the terminal connector 13 come into contact with each other. Electrical connection with the circuit unit 12 is achieved. In addition, although the figure showed the example which employ | adopted 2P type which exposes the edge part of two pin-shaped terminal connectors 13 in the recessed part 11a of the connector main body 11, 4P type and 6 which expose four edge parts are shown. A 6P type terminal connector in which the end of the book is exposed may be adopted.
The case part 20 is mainly composed of a case main body 21 made of a resin material and an attachment part 22 to the vehicle. The case main body 21 is a resin molded part, and is formed of, for example, PBT (polybutylene terephthalate) resin, nylon resin, or the like, similar to the connector main body 11. One end side of the case portion 20 has a large diameter and a tapered shape, and is provided with a recess 21a that forms a tapered space for accommodating the circuit portion 12 described above when the connector portion 10 is joined. On the side, a vehicle attachment portion 22 for attachment to the vehicle is provided. In addition, a metal bush is embedded in the vehicle attachment portion 22 and is fixed by caulking to the attachment position on the vehicle side via the metal bush.
And the connector part 10 and the case part 20 which were described above are the state in which the circuit part 12 of the connector part 10 is accommodated in the recessed part 21a of the case part 20, and the circuit part 12 side periphery of the connector main body 11 and the case main body 21 The inner peripheral surface of the recess 21a is joined and integrated. As a bonding method, various methods can be selected and adopted as appropriate according to specifications required for electric circuit equipment. For example, bonding with an adhesive, laser welding, vibration welding, ultrasonic welding, and the like. It is possible to adopt a joining method such as caulking or DSI (Die Slide Injection) molding.
Next, the effect produced by adopting the above-described resin casing structure of the electric circuit device 1 will be described. Various types of connector shapes and vehicle mounting shapes of various electric circuit devices mounted on the vehicle are used in terms of the design philosophy of the vehicle manufacturer, the mounting location of the electric circuit devices, and the like.
Here, for example, as shown in FIG. 4, as the connector shape, three types of shapes are obtained by adding a 4P connector (number 2) and a 6P connector (number 3) to the 2P connector (number 1) employed in the embodiment. Assume that it is necessary to deal with. Furthermore, as shown in FIG. 4, as a vehicle mounting shape, a metal bush thin type (number 1) in which the thick metal bush employed in the above embodiment is embedded, and a metal bush thin type (in which a thin metal bush is embedded) Assume a case where it is necessary to correspond to three types of shapes including a number 2) and a metal bolt type (number 3) in which a metal bolt is embedded. In this case, as the shape of the entire electric circuit device, there are nine types obtained by multiplying the number 3 of connector shapes by the number 3 of vehicle mounting shapes. In the conventional resin casing structure of an electric circuit device, the connector portion and the case portion are integrally molded with resin. As described above, nine types of electric circuit devices are manufactured in order to produce nine types of electric circuit devices. It was necessary to prepare a mold for resin molding.
On the other hand, according to the resin casing structure of the electric circuit device of the present invention, three types of molding molds for molding the connector portion 10 and three types of molding molds for molding the case portion 20 are combined. Using six types of resin molding dies, it is possible to deal with nine types of electric circuit devices. FIG. 5 is a diagram for explaining that it is possible to cope with nine variations of electric circuit equipment using six molding dies, and the left side of FIG. 5 shows three types of connector shapes in the connector portion. The center of each represents three types of vehicle mounting shapes in the case part. Moreover, the right of FIG. 5 has shown the whole shape of nine types of electric circuit apparatuses, and vehicle mounting shape in each electric circuit apparatus is a metal bush thickness type in (1)-(3), (4)-( 6) is a metal bush thin type, (7) to (9) is a metal bolt type, and the connector shapes are (1), (4), (7) 2P connector, (2), (5) , (8) is a 4P connector, and (3), (6), (9) are 6P connectors. Here, for example, the electrical circuit device having the shape of (1) includes a connector portion molded using a molding die for 2P connector, and a case portion molded using a metal bush thickness type molding die. Are manufactured by joining and integrating. In addition, the electrical circuit device having the shape of (9) is obtained by joining a connector portion molded using a 6P connector molding die and a case portion molded using a metal bolt type molding die. It is produced by integrating.
As is clear from the above detailed description, according to the present embodiment, the connector portion 10 produced using the molding die for the connector portion 10 and the case portion produced using the molding die for the case portion 20 are provided. By joining and integrating, it is possible to reduce the number of molds compared to the conventional structure in which the resin casing of the entire electric circuit device is produced with a single mold, thereby reducing the cost required for producing the mold Can be reduced. In addition, when an electrical circuit device having a new shape can be realized by a combination of the shape of the existing connector portion 10 and the shape of the case portion 20, the existing connector portion 10 can be formed without newly forming a mold for molding. Since it can be manufactured using the mold for molding and the mold for molding the case portion 20, it is possible to quickly cope with an increase in the types of shapes in the electric circuit device.
Further, the connector portion 10 is preferably selected from a plurality of types of connector shapes, and the mounting portion of the case 20 is selected from a plurality of types of mounting shapes. Therefore, it is possible to cope with the number of types of electrical circuit devices obtained by multiplying the number of types of connector shapes and the number of types of attachment shapes.
In addition, since the electric circuit device 1 is a collision detection electric circuit device in which a G sensor for detecting acceleration is mounted, there are few types of electric circuit devices for collision detection in which various types of connector shapes and attachment shapes exist. It can be handled with a mold for molding.
In addition, this invention is not limited to each embodiment mentioned above, A various change is possible in the range which does not deviate from the main point of this invention.
For example, the connector shape and the vehicle mounting shape of the electric circuit device in the embodiment are merely examples, and of course are not limited to these.
The resin casing structure of the electric circuit device of the present invention can be applied to an electric circuit device in which various mechanical or electronic sensors having a plurality of types of connector shapes and vehicle mounting shapes are mounted.
It is a figure which shows the structure of the connector part of the electric circuit apparatus which is one Embodiment of this invention, (a) is a front view, (b) is a side view. It is a side view which shows the structure of the case part of an electric circuit apparatus. It is a side view which shows the structure of the electric circuit apparatus of the completion state which joined and integrated the connector part and the case part. It is a figure which shows the kind of connector shape, and the kind of vehicle attachment shape. It is explanatory drawing which shows that nine types of electric circuit apparatuses are produced using six types of resin molds. It is a side view which shows the structure of the conventional electric circuit apparatus. It is a figure which shows nine types of shapes in the conventional electric circuit apparatus.
1 Electrical circuit equipment 10 Connector (resin connector)
11 Connector body 12 Circuit part (Electric circuit)
13 Connector terminal 20 Case (resin case)
21 Case body 22 Mounting part to vehicle
In the resin casing structure of electric circuit equipment mounted on the vehicle,
An electric circuit in which the sensor is mounted and a resin connector provided with a connector terminal for electrically connecting the electric circuit to the outside and a resin case provided with a mounting portion to the vehicle are divided and formed, and A resin connector and the resin case are joined and integrated ,
The shape of the resin connector is selected from a plurality of types of connector shapes including a 2P connector, a 4P connector, and a 6P connector,
The resin case mounting portion has a plurality of types of mounting including a metal bush thickness type in which a thick metal bush is embedded, a metal bush thin type in which a thin metal bush is embedded, and a metal bolt type in which a metal bolt is embedded. A resin casing structure for an electric circuit device, which is selected from shapes .
2. The electric circuit device according to claim 1, wherein the resin connector and the resin case are bonded together by any one of adhesive bonding, laser welding, vibration welding, ultrasonic welding, caulking, and DSI molding. Resin housing structure.
The sensor resin casing structure for an electric circuit device according to claim 1 or 2, characterized in that a G sensor that detects acceleration.
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