JPS6023910Y2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector in which a noise filter element such as a feedthrough capacitor is coupled to a connector pin.

BACKGROUND OF THE INVENTION As various industrial and household electronic and electrical devices become more sophisticated and sensitive, prevention of malfunctions due to noise generated by these devices and noise entering these devices from the outside has become an important issue.

In order to block such noise at the input and output terminals of the equipment,
Recently, input/output connectors have been proposed in which a noise filter element such as a feedthrough capacitor is coupled to a connector pin.

FIGS. 1A and 1B show an example of this type of connector, and the housing 1 is made of an insulating material such as plastic.
A plurality of connector pins 2 protruding from the upper surface 1a at approximately the same height are implanted into the chassis 4, which has through holes 3 provided at the same pitch as the arrangement pitch of the connector pins 2. A noise filter made of a feed-through capacitor or the like is placed on the upper surface 1a of the housing 1 while the connector pin 2 is inserted into each of the connector pins 2 in a non-contact state, and the connector pin 2 protrudes from the through hole 3 of the chassis 4. The elements 5 are combined, and the shield case 6 is placed over the noise filter element 5.
The structure was such that each of the connector pins 2 was led out from a through hole 7 provided in the upper surface 6a of the connector.

The feedthrough capacitor 5, as shown enlarged in FIG.
Preliminary solder layers 5c, 5 are formed on the electrodes 5a, 5b, which are soldered on both sides.
d, and using the preliminary solder layers 5c and 5d, the electrode 5a
, 5b are fixed to the connector pin 2 and the chassis 4 by soldering, and the periphery thereof is covered with an insulating resin 8.

However, as mentioned above, if the noise filter element 5 is soldered onto the flat chassis 4 that is solidly attached to the upper surface 1a of the housing 1, the soldering will cause the washing water to leak out during flux washing later. Since cleaning water, flux, etc. do not flow sufficiently to the back side of the chassis 4, they remain in the interface between the chassis 4 and the housing 1, the through hole 3 located below the noise filter element 5, etc., and the insulating resin 8 poor adhesion,
There is a problem in that interface peeling and further deterioration due to oxidation of the noise filter element 5, connector pins 2, and chassis 4 occur, resulting in a loss of reliability.

Furthermore, after the noise filter element 5 is soldered, the through hole 3 provided in the chassis 4 is blocked by the noise filter element 5, so it is difficult to cast the insulating resin 8 into the through hole 3 provided in the chassis 4. However, there were also problems with insulation.

It is an object of the present invention to solve the above-mentioned technical problems and to provide a connector with improved soldering reliability by allowing easy and reliable cleaning of soldering flux and casting of insulating resin.

In order to achieve the above object, the present invention includes a housing made of an insulating material in which a plurality of connector pins are implanted, a chassis through which the connector pins are passed through in a non-contact manner, and one electrode is connected and fixed to the chassis. and a noise filter element coupled to the connector pin,
The chassis is characterized in that most of its lower surface is provided so as to face the upper surface of the housing at a distance, and has a communication path leading from the upper surface to the lower surface.

The content of the invention will be specifically explained below with reference to the accompanying drawings which are examples.

FIG. 3A is a front sectional view of the connector according to the present invention, FIG. 3B is a partially cutaway plan view, FIG. 3C is B of FIG. 3A,
It is a sectional view taken on line -81.

In the figures, the same reference numerals as in FIGS. 1 and 2 indicate functionally identical components.

In this embodiment, stepped portions 1b and lc are provided at both ends or the periphery of the upper surface of the housing 1 in which a plurality of connector pins 2 are implanted, and a recessed portion 9 is formed between the stepped portions 1b and 1c. A chassis 4 is provided on the portions 1b and lc so as to bridge them, and a noise filter that is more effective than a feed-through capacitor is attached to the connector pin 2 which is passed through the through hole 3 provided in the chassis 4 in a non-contact manner. Element 5 is combined.

The chassis 4 is formed with a communication passage 10 that communicates from the upper surface to the recess 9 on the lower surface side.

In this embodiment, as shown in an enlarged view in FIG. 4, the communication path 10 is structured by a notch hole formed in the shape of an elongated hole between three groups of through holes formed in two rows in the connector pin 2. It is.

This communicating path 10 may be divided into a larger number of parts, and instead of a thank-you note, for example, one or more missing parts may be provided on the periphery of the chassis 4, and this missing part can be formed into the communicating path 1°. You can also use it as

When the communication path 10 as described above is provided, the upper surface side and the lower surface side of the chassis 4 communicate with each other. Therefore, after soldering the noise filter element 5 to the connector pin 2 and before filling the insulating resin 8, Washing water is also injected into the recess 9 on the lower surface side of the chassis 4 through the communication path 10 to remove residual solder attached to the inside of the recess 9, the inside of the through hole 3, the surface of the connector pin 2, the lower surface of the chassis 4, etc. Flux etc. can be easily removed by washing.

Moreover, the washing water can be easily and reliably discharged to the outside.

Also, when the insulating resin 8 is filled around the noise filter element 5 after the cleaning step, the communication path 1
0 to the lower surface side of the chassis 4, and the recess 9 and the through hole 3.
The insulating resin 8 can be easily and reliably filled around the inside of the housing, the surface of the connector pin 2, the bottom surface of the chassis 4, etc.

Therefore, according to the present invention, it is possible to prevent poor adhesion and interface peeling of the insulating resin 8 due to residual black, etc., and at the same time prevent noise filter element 5, connector pin 2, chassis 4, etc.
It is possible to provide a highly reliable connector that prevents deterioration due to oxidation such as the like and has improved insulation properties.

The chassis 4 has folded pieces 4a and 4b formed by bending both lengthwise ends in the same direction.
b protrudes outward through the mounting hole provided on the upper surface 6a of the shield case 6, and the protruding tip is attached to the shield case 6.
The connection is fixed on the top surface of the device by means of soldering, for example.

Incidentally, if the upper surface 6a of the shield case 6 is recessed to the position of the chassis 4 so as to serve as the chassis 4, the chassis 4 can be omitted.

Further, some of the connector pins 2 may be constructed without the noise filter element 5.

Further, the noise filter element 5 is not limited to a dielectric ceramic capacitor, but may also be a semiconductor ceramic capacitor such as a grain boundary insulation type or a reduction/reoxidation type, an LC composite type that combines a capacitor with ferrite beads, etc. , it may be a composite capacitor that shares some of the connector pins 2.

As described above, the present invention includes a housing made of an insulating material in which a plurality of connector pins are embedded, a chassis through which the connector pin is passed through in a non-contact manner, and one of the electrodes connected and fixed to the chassis. and a noise filter element coupled to the connector bin by the chassis, the chassis is provided such that most of its lower surface faces the upper surface of the housing at a distance, and the chassis is provided with a main portion facing the upper surface of the housing at a distance, and a portion of the chassis that extends from the upper surface side to the lower surface side. Since it is characterized by having a communicating path, it has the following effects.

(1) After soldering the noise filter element to the connector pin and chassis, water is poured onto the bottom side of the chassis through the communication path, and water adheres to or remains on the bottom surface of the chassis, the inside of its through-hole, the surface of the connector bin, etc. Flux etc. can be easily and reliably washed away.

Therefore, flux cleaning work becomes very simple, and at the same time, it is possible to improve the adhesion of the insulating resin to the chassis, connector bin, etc., prevent adhesion failure, interfacial peeling, etc., and improve insulation properties, reliability, etc.

(2) When filling insulating resin around the noise filter element, it is easy to pour insulating resin into the recess on the bottom side of the chassis through the communication path, and easily fill the insulating resin around the chassis, the inside of its through hole, and the connector bin. Moreover, it is possible to reliably fill the material and improve insulation properties.

[Brief explanation of the drawing]

FIG. 1A is an exploded perspective view of a conventional connector, FIG. 1B is a partially cut-out front view of the connector in an assembled state, FIG. 2 is a partially enlarged sectional view, and FIG. 3A is a connector according to the present invention. FIG. 3B is a partially cutaway plan view, FIG. 3C is a cross-sectional view taken along line B and -B in FIG. 3A, and FIG. 4 is an enlarged perspective view of the chassis. 1...Housing, 2...Connector bin, 3...Through hole, 4...Chassis,
5... Noise filter element, 9... Concave portion, 1
0...Communication path.

Claims (1)

[Scope of utility model registration request] A noise filter comprising a housing made of an insulating material in which a plurality of connector pins are embedded, a chassis through which the connector pins are passed through in a non-contact manner, and one of the electrodes connected and fixed to the chassis and coupled to the connector pins. The chassis is provided such that most of its lower surface faces the upper surface of the housing at a distance, and the chassis has a communication path leading from the upper surface side to the lower surface side.