JPH08162222A - Connector with built-in filter - Google Patents

Abstract

PURPOSE: To prevent deterioration in function of a filter, generate no connection failure in assembly and reduce production cost in a connector with built-in filter which prevents invasion of obstruction electric waves from the outside of an apparatus and remove unnecessary waves generated on the inside of the apparatus. CONSTITUTION: A terminal 2 is brought into contact with a an electrode on one side of a capacitor 4 having electrodes having the same shape on both sides, and a tongue piece 3b having elasticity formed in an earth plate 3 is elastically pressed against the other electrode to interpose and conduct. By this constitution, stress caused by heat stress is relaxed, and damage of a capacitor 4 and its connecting part is eliminated. A general purpose capacitor with no polarity and low cost can be used as the capacitor 4, no connection failure is generated in assembly, and workability is enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a highly sensitive device such as a communication device and an electric component for an automobile, and is a filter for removing interference radio waves from the outside of the device and unnecessary radio waves generated in the device. Regarding the built-in connector.

[0002]

2. Description of the Related Art A conventional connector with a built-in filter will be described below.

As shown in FIGS. 5 to 7, a plurality of terminals 12 are penetratingly held at a predetermined pitch in an intermediate partition plate 11a provided in a housing 11 made of a substantially box-shaped insulator.

The ground plate 13 made of a conductive metal plate has a hole 13a for penetrating the terminal 12 in a non-contact manner, and its outer shape is smaller than that of the partition plate 11a. It is installed.

In the capacitor 14 having a disk shape and having through holes 14a in the thickness direction, the terminal 12 held through each hole 13a of the earth plate 13 is penetrated through the through hole 14a of the capacitor 14, and the upper surface of the earth plate 13 is penetrated. Is stuck to.

The capacitor 14 has an upper surface electrode 14 around the through hole 14a, leaving a gap on one side with the outer peripheral portion.
b is provided, and the lower surface electrode 14c is provided to the outer periphery with a gap left from the inner peripheral surface of the through hole 14a on the other surface. The lower surface electrode 14c of the capacitor 14 is soldered to the ground plate 13. Then, the capacitor 1 for the terminal 12
The upper surface electrodes 14b of No. 4 are soldered to be electrically connected to each other and fixed.

For soldering the lower surface electrode 14c of the capacitor 14 and the ground plate 13, the cream solder (not shown) coated on the upper surface 13b of the ground plate 13 is melted and fixed, and the terminal 12 and the capacitor 14 are also fixed. Top electrode 14b
For the soldering with, the ring-shaped solder 15a, which is passed through the terminal 12 from above the capacitor 14 during manufacturing and assembly, is fixed by the melted solder 15. Therefore, the ground plate 13
Serves as a common terminal for the capacitor 14.

The capacitor 14 is held in the housing 11 in a sealed state by an insulating sealing resin (not shown).

[0009]

However, in the above-mentioned conventional configuration, the capacitor 14 has the upper surface electrode 14b and the lower surface electrode 14c, and is a directional and expensive custom product, and the capacitor 14 is not manufactured at the time of manufacturing and assembling. There is a problem that a step of selecting the upper and lower parts is required and a connection failure occurs due to a selection error. Further, since high heat at the time of soldering is directly transmitted to the housing 11, the housing 11 requires an expensive heat-resistant resin material. Furthermore, due to the heat load applied at the time of soldering and after being mounted on various devices, a difference in contraction occurs between the housing 11 and the ground plate 13 due to a difference in coefficient of thermal expansion, and stress is applied to the capacitor 14 and its connecting portion. Since shear stress and compressive stress are applied to the capacitor 14 and the capacitor 14, if stress due to heat load is repeated, Sometimes 15 or capacitor 14 is broken, it caused the characteristic failure or disconnection state, the filter function has a problem that significantly deteriorated.

An object of the present invention is to solve the above-mentioned conventional problems, and to provide a filter built-in connector which does not cause a connection failure during manufacturing and assembly, is inexpensive, and does not deteriorate the filter function.

[0011]

To achieve this object, a connector with a built-in filter according to the present invention has a terminal abutting on an electrode on one side of a capacitor having electrodes of the same shape on both sides,
In addition, the tongue piece having elasticity formed on the ground plate is elastically pressed and sandwiched by the electrode on the other surface so as to be electrically connected.

[0012]

With this structure, the stress due to the heat load is relieved, and the damage to the capacitor is eliminated. In addition, since inexpensive materials and capacitors can be used and the directionality of the capacitors is eliminated, the assembly can be simplified and a structure with good workability can be obtained.

[0013]

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, terminals 2 are press-fitted and held in terminal holes 1b formed at a predetermined pitch in an intermediate partition plate 1a provided in a housing 1 made of a substantially box-shaped insulator. After that, the ground plate 3 is mounted on the partition plate 1a.
The ground plate 3 has holes 3a through which the terminals 2 are individually inserted in a non-contact manner, and an electrode on one side of a disk-shaped capacitor (hereinafter referred to as a capacitor) 4 is elastically pressed in proximity to the holes 3a to obtain conduction. A tongue piece 3b having is formed for each terminal 2.

After mounting the earth plate 3, the capacitor 4 having the same shape as the opposing electrodes and having no directivity is attached to the intermediate partition plate 1.
The terminal 2 which is press-fitted into and held in a is held in contact with the electrode on one surface facing the terminal 2 and the electrode on the other surface is elastically pressed by the tongue piece 3b of the grounding plate 3 to be mounted to obtain conduction. are doing.

As described above, according to this embodiment, the stress caused by the contraction difference due to the difference in thermal expansion coefficient between the housing and the ground plate due to the heat load is not relieved by the elasticity of the tongue and is not applied to the capacitor. The capacitor is not damaged and can be highly reliable.

Further, as the capacitor itself, an inexpensive general-purpose product having no directivity can be used, and since it is not necessary to select the direction of the capacitor 4 at the time of manufacturing and assembling, the number of working steps can be reduced and the manufacturing cost can be reduced.

Further, when the capacitor 4 is connected only by abutting and elastic pressing, heat due to soldering is not directly applied to the housing 1, so that an expensive heat resistant resin material is not required and the manufacturing cost can be reduced.

The connection between the capacitor 4 and the terminal 2 and between the capacitor 4 and the ground plate 3 is replaced by contact and elastic pressing,
By using soldering connection or connection using conductive paste, the reliability of the connection portion can be improved.

Further, when fixed by soldering connection or connection using conductive paste, the elastic tongue piece 3b provided on the ground plate 3 has elasticity in the pitch direction of the terminals at the same time. Even when a load is applied, the stress caused by the difference in contraction due to the difference in the coefficient of thermal expansion between the housing 1 and the ground plate 3 can be alleviated.

Further, instead of the capacitor 4 of this embodiment,
Needless to say, the same effect can be obtained by using a chip-type capacitor or a filter element that removes interference radio waves from the outside of the device and radiation of unnecessary radio waves generated inside the device.

Another embodiment of the present invention will be described below. As shown in FIG. 4, the feature of this embodiment lies in that the partition plate 1 of the housing 1 is similar to that of the above-described embodiment.
This is because a concave portion 1c for fixing the capacitor 4 formed in the vicinity of each terminal hole 1b on a is added.

With this structure, the capacitor 4 can be easily positioned in addition to the effects of the above-described embodiment.

The capacitor 4 is positioned by using the hole 3a of the ground plate 3 instead of the recess 1c of the housing 1 described above.
The same effect as described above can be obtained by making the diameter smaller than the outer diameter of the condenser 4 and holding the condenser 4 by the hole 3a.

[0025]

As is apparent from the above description, according to the present invention, a terminal having an electrode on one side of a capacitor having electrodes of the same shape on both sides is contacted with a terminal, and an electrode on the other side is made of an elastic material formed on a ground plate. With the configuration in which the tongue piece having the above is elastically pressed to be sandwiched and made conductive, a connection failure does not occur at the time of manufacturing and assembling, it is possible to realize an inexpensive connector with a built-in filter that does not deteriorate the filter function.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a connector with a built-in filter according to the present invention.

FIG. 2A is a plan view of the connector with a built-in filter, FIG. 2B is a front view showing a partial cross section of the connector with a built-in filter without a part thereof, and FIG. 2C is a side view of the connector with the built-in filter. Figure

FIG. 3 is an exploded perspective view of the connector with a built-in filter.

FIG. 4 is a perspective view of a housing which is a main part of a connector with a built-in filter according to another embodiment of the present invention.

5 (a) is a plan view of a conventional connector with a built-in filter, (b) is a front view showing a partial cross section of the connector with a built-in filter without a part thereof, and (c) is a view of the connector with a built-in filter. Side view

FIG. 6 is an exploded perspective view of the same.

FIG. 7A is a plan view of a capacitor which is a main part of the filter built-in connector, FIG. 7B is a front view of the same, and FIG. 7C is a bottom view of the same.

[Explanation of symbols]

 1 Housing 1a Partition plate 1b Terminal hole 2 Terminal 3 Ground plate 3b Tongue 4 Disc type capacitor (filter element)

Claims (6)

[Claims] 1. A housing made of an insulator in which a partition plate having a plurality of terminals penetratingly held therein is provided inside, and a terminal hole provided on the partition plate, through which the terminal can pass. An earth plate in which an elastic tongue is formed, and a filter element having electrodes of the same shape provided on both surfaces, the terminal is brought into contact with the electrode on one surface of the filter element, and
A connector with a built-in filter, characterized in that the tongue piece is elastically pressed and held by an electrode on the other surface to electrically connect the filter element to the terminal and the ground plate. 2. The filter built-in connector according to claim 1, wherein the electrodes on one surface of the filter element are connected to the terminals by soldering. 3. The filter built-in connector according to claim 1, wherein the electrodes on one surface of the filter element are connected to the terminals by a conductive paste. 4. The filter built-in connector according to claim 1, wherein the partition plate of the housing has a recess for fixing the filter element on the surface thereof. 5. The filter built-in connector according to claim 1, wherein the ground plate has a hole having an inner diameter slightly smaller than the outer diameter of the filter element, and is configured to fix the filter element. 6. The filter built-in connector according to claim 1, wherein the tongue piece of the ground plate is elastic in the pitch direction of the terminals.