JP2502231Y2 - Connector-body circuit device and connector-body circuit housing - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector type circuit device and a housing with a connector type circuit.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional example of a housing with a connector-integrated circuit. In this conventional example, a connector 7 in which a contact 11 is integrally formed in a resin housing (insulator) and a mounting portion 71 to the circuit board 8 is formed in this housing is used. This connector 7
Is fixed to the circuit board 8 at the mounting portion 71 as shown. At that time, the terminal portion 112 of the contact 11 is connected to an electric circuit formed on the circuit board 8 by soldering or the like. The circuit board 8 is screwed to the housing 9 in the screw hole 81. Further, usually, a structure is adopted in which the housing 9 is covered with another housing serving as a lid to hermetically seal the inside of the housing.
The circuit board 8 is made of glass epoxy, paper epoxy or the like. The housing 9 is generally made of metal.

[0003]

By the way, this type of connector-integrated case with circuit is generally used in an environment where the temperature changes greatly. In that case, since the linear expansion coefficient of the housing of the connector and that of the circuit board are significantly different, a large stress is generated in the contact arrangement direction. Then, this stress causes a crack in the soldered portion between the contact and the circuit board, which causes a connection failure.

An object of the present invention is to provide a connector body type circuit device and a housing with a connector body type circuit which can effectively suppress cracks generated in a soldered connection portion of a contact due to stress generated due to temperature change.

[0005]

According to the present invention, there are provided a tubular portion into which a contact is inserted and fixed, and a thin-walled connecting portion which is connected to the tubular portion and maintains the arrangement relationship of the tubular portions. A connector characterized by the following is obtained. The tubular portion and the thin connecting portion are usually integrally formed. The tubular portion and the thin-walled connection portion are made of, for example, synthetic resin.

Further, according to the present invention, there is provided a board having a circuit surface on which an electric circuit is formed, and a fitting surface portion formed continuously with the board, and a through hole provided in the fitting surface portion. A connector-integrated circuit device is obtained, in which the tubular portion of the connector is inserted and fixed to, and the terminal portion of the contact is soldered to the circuit surface. As the substrate, for example, a metal plate coated with an insulating coating is used.

Further, according to the present invention, there is provided a housing having a circuit surface on the inner bottom surface of which an electric circuit is formed, and a fitting portion having a through hole is formed on a wall surface of the housing, and The cylindrical portion of the connector is inserted and fixed, the fitting portion of the contact is exposed to the outside of the housing, and the terminal portion of the contact is soldered to the circuit surface. A housing with an integrated circuit is obtained. The housing is
For example, a metal one is used.

[0008]

In the connector-integrated circuit device or the housing with a connector-integrated circuit having the above-described structure, the thin-walled connecting portion of the connector is thin and therefore the structural strength is low. The thin connection portion is formed of, for example, a synthetic resin, and the circuit board and the housing are made of metal, for example, as described above. Therefore, the Young's modulus of the material of the circuit board or the case is much higher than that of the material of the thin-walled connection portion. Therefore, the dimensional change due to the temperature change is dominated by the amount of change in the material portion of the circuit board or housing. On the other hand, the dimensional change due to heat in the electric circuit formed on the inner bottom surface of the circuit board or the case is dominated by the amount of change in the material portion of the circuit board or the case.

Therefore, according to the connector-integrated circuit device and the housing with a connector-integrated circuit of the present invention using the above-mentioned connector, both the connector and the circuit portion behave in the same degree with respect to thermal expansion. The generated stress in the direction is extremely small. Therefore, it is possible to suppress the occurrence of cracks at the soldered connection portion of the contact.

[0010]

EXAMPLES The present invention will be described below with reference to examples.

Referring to FIG. 1, the illustrated connector 1 is provided with a plurality of contacts 11.
1 is inserted into and fixed to the tubular portion 12. The tubular portion 12 is held by the thin-walled connecting portion 13 so as to maintain a predetermined arrangement relationship. It is preferable that the tubular portion 12 and the thin connecting portion 13 are integrally formed, but it is of course possible to attach a separate body. The thin connecting portion 13 is made of an insulating material, and functions as an insulator when the connector 1 is attached to a circuit board 2 or a housing with a circuit, which will be described later, that is, the circuit board or housing and the contact 11 are insulated from each other. To do.

As shown in the figure, the contacts 11 are arranged in parallel in upper and lower stages, respectively, and the fitting portions 111 are substantially linear.
And a terminal portion 112 to be soldered to a circuit board or the like. The terminal portion 112 can be appropriately selected from a through hole type and a surface mounting type according to a method of soldering the contact 11 to a circuit board or the like. In the illustrated example, the terminal portion 112 is of a surface mounting type in which the tip is bent into a substantially L shape. The fitting portion 111 of the contact 11 is fixed to each tubular portion 12 by a method such as press fitting.

Referring to FIG. 2, a connector body type circuit device using the connector 1 constructed as described above will be described. Circuit board 2 to which connector 1 is connected by soldering
Has a metal base coated with an insulating coating, and a circuit surface 21 having an electric circuit such as printed wiring is formed on the insulating coating. In addition, a part of the metal base is bent and bent, so that the fitting surface portion 22 is formed. The fitting surface portion 22 is provided with a plurality of through holes 221 for inserting and fixing the tubular portions 12 of the connector 1.

When the connector 1 is mounted on the circuit board 2, the fitting portions 111 of the contacts 11 forming the connector 1 are inserted into the through holes 221 of the fitting surface portion 22 as shown by solid line arrow I. . And contact 1
The one terminal portion 112 is soldered and connected to the corresponding terminal connection pad 211 on the circuit surface 21. This forms a connector-integrated circuit device.

Next, a housing with a connector-integrated circuit using the above-described connector 1 will be described with reference to FIG. The circuit-equipped housing 3 to which the connector 1 is connected by soldering is made of, for example, a metal, and an insulating coating is applied to the inner bottom surface thereof.
An electric circuit is formed on the insulating film by printed wiring or the like. That is, the circuit surface 31 is formed on the inner bottom surface of the housing 3. As illustrated, the housing 3 has a wall surface 32 and a flange portion 33 extending outward, and a part of the wall surface 32 is used as a fitting surface portion. The fitting surface portion 32 includes
Through holes 321 for inserting and fixing the tubular portions 1 of the connector 1 are formed. In addition, the flange part 3
3 is formed with a screw hole 34 for screwing with a lid-shaped housing 4 described later.

The connector 1 is attached to the circuit-equipped case 3 in the same manner as the case of the circuit board 2.
That is, the fitting portion 111 of each contact 1 is inserted into each through hole 321 as indicated by the solid arrow II, and the tubular portion 12 is fixed to each through hole 321. The terminal portion 112 of each contact 1 is soldered to the corresponding terminal connection pad 311 on the circuit surface 31.

FIG. 4 shows a state in which the connector 1 is attached to the housing 3 with a circuit. In FIG. 4, reference numeral 35 denotes a soldering portion between the terminal portion 112 and the terminal connection pad 311.

Referring to FIG. 5, in the circuit-equipped casing 3 to which the connector 1 is attached as described above, the semiconductor package 6 is surface-mounted on the circuit surface 31, for example. Thereafter, the circuit-equipped casing 3 is covered with a lid-shaped casing 4 and sealed to form a case. At this time, a sealing rubber 5 is provided between the housings 3 and 4 to improve the sealing performance. Although not shown in FIG. 5, the housing with circuit 3 and the housing 4 are screwed with screws using the screw holes 34 shown in FIG. In this way,
A housing with a connector-integrated circuit is configured.

As described above, in this embodiment, since the thin-walled connection portion used for the connector is made of resin and is thin, the structural strength is low. The circuit board and the housing are specifically made of ceramic or metal as described above, so that the Young's modulus of the circuit board and the housing is much higher than that of the thin-walled connection portion. Therefore, the dimensional change due to the temperature change is dominated by the amount of change in the material portion of the circuit board or housing. On the other hand, the dimensional change due to heat in the electric circuit formed on the inner bottom surface of the circuit board or the case is dominated by the amount of change in the material portion of the circuit board or the case.

Therefore, according to the connector-integrated circuit device and the housing with a connector-integrated circuit of the present invention using the above connector, the connector and the circuit portion are considered in view of the low structural strength of the thin-walled connection portion. Both exhibit the same behavior regarding thermal expansion, and the stress generated in the contact arrangement direction is extremely small. Therefore, it is possible to suppress the occurrence of cracks at the soldered connection portion of the contact.

Although a metal plate is used as the substrate in the above embodiment, the same effect can be obtained by using a ceramic plate or the like.

[0022]

As described above, according to the present invention, since the contact is inserted and fixed in the tubular portion and the tubular portion is held by the thin-walled connecting portion, such contact is used. When the connector-integrated circuit device and the housing with a connector-integrated circuit are configured, there is an effect that it is possible to effectively suppress the occurrence of cracks due to a temperature change in the soldered connection portion of the contact.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a connector according to the present invention.

FIG. 2 is a diagram for explaining an embodiment of a connector-integrated circuit device in which the connector shown in FIG. 1 is attached to a circuit board.

FIG. 3 is a diagram showing a housing with a circuit in a state before the connector shown in FIG. 1 is attached.

FIG. 4 is a diagram showing a housing with a circuit in a state where the connector shown in FIG. 1 is attached.

5 is a cross-sectional view showing a state in which the case with circuit shown in FIG. 4 is covered with a lid-like case and sealed.

FIG. 6 is an explanatory diagram of a conventional example of a housing with a connector-integrated circuit.

[Explanation of symbols]

 1, 7 Connector 2, 8 Circuit Board 3 Circuit Housing 4, 9 Housing 5 Sealing Rubber 6 Semiconductor Package 11 Contact 12 Cylindrical Part 13 Thin-walled Connection Part 21, 31 Circuit Surface 22, 32 Fitting Surface 33 Flange Part 34 screwing hole 111 fitting part 112 terminal part 211, 311 terminal connection pad 221, 321 through hole

Claims (2)

(57) [Scope of utility model registration request] 1. A contact including a fitting portion and a terminal portion, a tubular portion into which the contact is inserted and fixed, and a thin-walled connecting portion for holding and holding the tubular portion in a predetermined arrangement relationship. And a connector having a circuit surface on which an electric circuit is formed, and a fitting surface portion continuously formed on the substrate, the connector being provided in a through hole provided in the fitting surface portion. The cylindrical body part is inserted and fixed, and the terminal part of the contact is soldered to the circuit surface. 2. A contact including a fitting portion and a terminal portion, a tubular portion into which the contact is inserted and fixed, and a thin-walled connecting portion for holding and holding the tubular portion in a predetermined arrangement relationship. And a housing having a circuit surface on the inner bottom surface of which an electric circuit is formed, and a fitting surface portion having a through hole is formed on a wall surface of the housing, and the connector is provided in the through hole. With the connector body type circuit, the tubular part of the contact is inserted and fixed, the fitting part of the contact is exposed to the outside of the housing, and the terminal part of the contact is soldered to the circuit surface. Housing.