JPH0935820A - Connector with built-in electronic component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the circuit characteristics from varying even if a mold resin exists around electronic component and therefore, as a result, obtain the desired circuit characteristics. SOLUTION: A connector fitted internally with electronic component is equipped with a connector part 7 to be connected with the terminal of an electronic appliance, electronic component 1 installed at the base of the connector part 7, and a cable 6 connected with the connector part 7 on its side with the base. The electronic component 1 is encased in a case 8, and the connecting end part of the cable 6 and the component 1 are enclosed in a single piece with the case 8, and a mold resin 9 is applied in such a way that these parts are fixed to the base of the connector part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting electronic devices to each other, and in particular, it has an electronic component such as a noise removing component, and the electronic component is integrally formed with a connecting end portion of a cable by a molding resin. The present invention relates to a covered electronic component built-in connector.

[0002]

2. Description of the Related Art As electronic circuits of electronic devices are digitized, harmonics used inside the circuits become electromagnetic waves, which become noise and adversely affect the circuits of other electronic devices. . Such noise propagates through a space or a conductor such as a cable, but noise radiated into the space is often generated from the cable. To this end, a noise elimination circuit is inserted between the cable and the connector that connect electrical equipment to each other to remove the noise generated by the electronic equipment or the noise that tries to enter the electronic equipment. It is being appreciated.

In a connector having a noise removing component used for such a purpose, a noise removing circuit is provided in the connector section, and a cable is connected to the connector section via the noise removing circuit. In this type of conventional connector, in order to protect the noise removal circuit from external force, the connection end of the cable and the noise removal circuit are integrally covered with mold resin, and the connection end of the cable and the noise removal circuit are covered. It is fixed to the base end of the connector.

[0004]

The noise removing circuit uses an LC filter composed of a capacitor and an inductor. Most of these capacitors and inductors are made into chips, and especially laminated chip parts are used. However, when the noise removal component is covered with the mold resin as described above, stress is generated inside the chip-shaped electronic components that make up the noise removal circuit due to shrinkage of the resin during molding or after molding. However, the chip body is distorted. Then, the capacitance of the capacitor and the inductance of the inductor change, and the circuit characteristics of the noise removing circuit change. As a result, there is a problem that desired circuit characteristics cannot be obtained and a sufficient noise removing effect cannot be obtained.

In view of the problems in the conventional connector having a built-in electronic component, the present invention does not change the circuit characteristic even if the molding resin is molded around the electronic component, and as a result, the desired circuit characteristic is obtained. It is intended to provide a connector with a built-in electronic component.

[0006]

According to the present invention, in order to achieve the above-mentioned object, when molding the molding resin 9, deformation such as shrinkage thereof does not directly affect the electronic component 1 covered with the molding resin 9. I chose That is, by covering the electronic component 1 with a protective member such as the case 8 or the soft member 8 ′ and then with the mold resin 9, the deformation such as shrinkage of the mold resin 9 is received or absorbed by the protective member, I tried not to reach the electronic component 1.

That is, the connector with a built-in electronic component according to the present invention includes a connector portion 7 connected to a terminal terminal of an electronic device, an electronic component 1 provided on the base side of the connector portion 7, and a base portion side of the connector portion 7. The cable 6 is connected to the connector section 7, and the molding resin 9 integrally covering the connection end of the cable 6 and the electronic component 1 and fixing them to the base of the connector section 7 is provided. In particular, the electronic component 1 is covered with a protective member, and the mold resin 9 is applied so as to cover the protective member.

Here, the electronic component 1 is mounted on the circuit board 3 attached to the base of the connector portion 7, and the cable 6 is connected to the circuit pattern 4 of the circuit board 3. For example, a case 8 is used as a protective member, which is fixed on the circuit board 3 to cover the electronic component 1. Also,
As another example of the protective member, a soft member 8 ′ that is softer than the mold resin 9 can be cited, which covers the electronic component 1 and the mold resin 9 is applied thereon.

[0009]

In the connector with a built-in electronic component according to the present invention, since the electronic component 1 is covered with the circuit board 3 and the case 8 and the mold resin 9 is applied on it, it occurs during or after the molding of the mold resin 9. Deformation such as shrinkage is received by the case 8 and does not reach the electronic component 1. Therefore, no stress is generated inside the electronic component 1 and no distortion is generated, so that the characteristic variation of the electronic component 1 does not occur. As a result, the circuit characteristics do not change and desired circuit characteristics are obtained. Even when the soft member 8'is used as the protective member, the soft member 8'is not deformed during the molding of the molding resin 9 or after the molding.
Is absorbed, the deformation of the mold resin 9 hardly reaches the electronic component 1. Therefore, the characteristic variation of the electronic component 1 does not occur.

[0010]

Embodiments of the present invention will now be described specifically and in detail with reference to the drawings. 1 to 4 show a connector with a built-in electronic component according to an embodiment of the present invention. This electronic component built-in connector has a connector portion 7 connected to a terminal terminal of an electronic device. As shown in FIGS. 1, 2, and 4, the connector portion 7 has a terminal terminal of the electronic device. The circuit board 3 such as a printed circuit board is attached to the side opposite to the front end fitted to the base, that is, the base end side.

As shown in FIGS. 1 and 4, a circuit pattern 4 is formed on the circuit board 3, and electronic parts 1 such as capacitors and inductors are mounted on the circuit pattern 4, and their terminal electrodes 2 are connected to the circuit. The pattern 4 is soldered to form a circuit such as a noise removal filter. The circuit pattern is connected to a conductor terminal of the connector portion 7 by a conductor (not shown). Further, the cable 6 is connected to the other circuit pattern 4 with the solder 5, and thus the cable 6 is connected to the connector portion 7 through the circuit formed on the circuit board 3. The illustrated cable 6 is a coaxial cable, and an inner conducting wire 12 and an outer conducting wire 13 are connected to the circuit pattern 4, respectively.

A slit-shaped mounting hole 10 is provided in each of the central portion on the cable 6 side and the central portion on the connector portion 7 side of the electronic component 1 of the circuit board 3, and in FIG. The hole is hidden behind the base of the connector part 7 and cannot be seen. The case 8 is provided with protrusions 11 projecting from both ends on the lower side at the same intervals as the intervals of the mounting holes 10 of the circuit board 3 and the bottom surface of which is open. The case 8 has an internal size capable of covering the electronic component 1 mounted on the circuit board 3 as a whole. And in this case 8,
As shown in FIG. 2, the protrusions 11 are fitted into the mounting holes 10 of the circuit board 3 to be mounted on the circuit board 3, thereby covering the electronic component 1 on the circuit board 3. A metal case can be used as the case 8, and in this case, the case 8 is connected to the ground wiring of the circuit board 3,
It can also be used as a shield case.

Further, with the case 8 attached in this manner, as shown in FIGS. 3 and 4, the connection end portion of the cable 6, the circuit board 3 and the case 8 are entirely covered, and the base portion of the connector portion 7 is provided. Mold resin 9 is molded so as to reach. The molding resin 9 integrally fixes the connection end of the cable 6, the circuit board 3, the case 8 and the connector 7. The mold resin 9 is made of vinyl chloride resin or the like, and forms a taper that becomes thin from the connector portion 7 to the connection end portion of the cable 6. As a result, the connector portion 7 is firmly fixed to the molding resin 9, while a certain degree of flexibility is obtained on the end side of the cable 6. The mold resin 9 does not come into contact with the electronic component 1 due to the case 8, and therefore, the contracting force during or after the molding does not reach the electronic component 1.

5 and 6 show an electronic component built-in connector according to another embodiment of the present invention. In this embodiment, instead of the case 8, the electronic component 1 on the circuit board 3 is covered with a soft member 8'which is softer than the molding resin 9. For example, when the molding resin 9 is made of vinyl chloride resin or the like, the soft member 8'is made of a soft material such as silicone rubber and is dropped on the circuit board 3 by a dispenser or the like. After that, the molding resin 9 is molded in the same manner as described above. The soft member 8 ′ absorbs deformation such as shrinkage of the mold resin 9 that occurs during or after the molding of the mold resin 9 and prevents the shrinkage force from reaching the electronic component 1.

In each of the above embodiments, the circuit board 3 is used.
However, for example, when the electronic component 1 is a composite chip component such as an LC chip component or a single functional component such as a hybrid IC, the circuit board 3 is always required. do not do. In this case, the connector part 7 should be accommodated with the electronic parts housed in the case 8 or the like.
Attach to the base of.

[0016]

As described above, according to the present invention, deformation such as shrinkage during or after molding of the molding resin 9 does not affect the electronic component 1, so that stress is generated inside the electronic component 1. No distortion occurs. As a result, the circuit characteristics do not change due to the characteristic changes of the electronic component 1, and the desired circuit characteristics are obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a case is disassembled from a circuit board before a mold resin is applied to a connector with a built-in electronic component according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the case before applying the molding resin of the electronic component built-in connector according to the embodiment is attached to the circuit board.

FIG. 3 is a perspective view showing a state in which a mold resin is applied to the electronic component built-in connector according to the embodiment.

FIG. 4 is a side view in which the mold resin of the connector with a built-in electronic component according to the embodiment is partially cut away.

FIG. 5 is a perspective view of the connector with a built-in electronic component according to another embodiment of the present invention with a part of the molding resin cut away.

FIG. 6 is a side view of the connector with a built-in electronic component according to the embodiment with a part of the molding resin cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic component 3 Circuit board 4 Circuit pattern of circuit board 6 Cable 7 Connector part 8 Case 8'Soft member 9 Mold resin

Claims (4)

[Claims] 1. A connector part (7) connected to a terminal terminal of an electronic device, an electronic component (1) provided on the base side of the connector part (7), and a connector part (7).
The cable (6) connected to the connector part (7) at the base side of the, the connection end part of the cable (6) and the electronic component (1) are integrally covered, and they are connected to the connector part (7). A connector with a built-in electronic component, comprising a mold resin (9) fixed to a base, wherein the electronic component (1)
Is covered with a protective member, and the molding resin (9) is applied so as to cover the protective member. 2. An electronic component (1) is mounted on a circuit board (3) attached to the base of a connector part (7),
The electronic component built-in connector according to claim 2, wherein a cable (6) is connected to the circuit pattern (4) of the circuit board (3). 3. A connector with a built-in electronic component, wherein a protective member is fixed on a circuit board (3) and comprises a case (8) covering the electronic component (1). 4. The connector with a built-in electronic component according to claim 1, wherein the protective member is made of a soft member (8 ') softer than the molding resin (9) covering the electronic component (1).