JPH08306438A - Filter connector for circuit board - Google Patents

Abstract

PURPOSE: To connect a connector for a filter of a filter connector for a circuit board without relying on soldering. CONSTITUTION: Spring housing grooves 2 are arranged with respective pin contacts in an upper part of a conductor holding insulator 23 through which pin contacts 9 penetrate, and washer-shaped springs are fitted in the respective grooves, and are contacted with the respective pin contacts. A capacitor array 16 which has a capacitor electrode and whose upper surface becomes a grand electrode 17 is placed in a position corresponding to the respective washer springs above them, and the electrodes and the washer springs are contacted with each other, and this is pressed down by a grand plate 12, and its lower fixing end 14 is inserted into a grand plate fixing groove 8, and is fastened by a metallic screw 21. Therefore, the grand electrode of the capacitor array 16 is put in the same grounding electric potential with a grand surface of a circuit board 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a circuit board filter connector using a capacitor array as a filter element.

[0002]

2. Description of the Related Art FIG. 4 is a diagram showing an example of the structure of a conventional filter connector that uses a capacitance as a filter element. FIG. 4A is a view of a contact assembly focusing on one contact, in which a dielectric 45 is provided around a part of the contact 46, the outer side of which is covered with an external ground electrode 44, and a feedthrough capacitor 47. Is formed.

FIG. 4B is a view showing a state in which the contact assembly shown in FIG. 4A is attached to a connector frame body fixed to a circuit board. It is composed of an insulating body 48 provided as above, a ground shell 42 covering the insulating body 48, and a front shell 41.

Then, the contact assembly shown in FIG. 3A is fitted in the recess 49 of the insulator 48, and the external ground electrode 44 of the contact assembly and the ground shell 42 of the connector frame are fixed by soldering 43. Figure (b)
In the figure, only one contact assembly is fitted, but according to the number of cores actually required, a large number of recesses are provided in a linear array along the direction perpendicular to the plane of the drawing. Further, a plurality of such rows are arranged vertically.

The lower tip of the contact 46 bent at a right angle is soldered to the printed conductor of the circuit board. In this way, the connector on the circuit board side is configured, and the plug is inserted into the plug insertion space 50 from the outside, whereby electrical connection with the outside is achieved.

[0006]

However, as in the prior art described above, the feedthrough capacitor 47 is connected to the contact 46.
Is fixed to the connector frame body, and the ground shell 42 of the frame body and the feedthrough capacitor 47 are fitted.
If the external ground electrode 44 is soldered one by one, in the case of a multi-core connector having a large number of signal lines, a great deal of time and labor is required, resulting in an increase in the number of assembling steps and a resulting increase in cost. There is.

Further, after the feedthrough capacitor 47 is soldered and fixed to the connector frame, it cannot be easily replaced, and after the connector is completely mounted on the circuit board and the tip of the contact 46 is soldered to the circuit board. There is a problem that the feedthrough capacitor cannot be installed or replaced.

In view of the above-mentioned problems of the prior art, an object of the present invention is to use a capacitor array as a filter element, and contact with a signal line by pressing using an elastic contactor instead of soldering. The purpose of the present invention is to provide a circuit board filter connector which is easy to assemble and replace and which can be easily replaced even after the connector is completely mounted on the circuit board.

[0009]

The circuit board filter connector of the present invention is characterized by having the following respective configurations in order to achieve the above object. (A) A plurality of conductors arranged in parallel at a predetermined interval so that the printed conductor of the circuit board and the multi-core conductor of the external plug are contact-connected. (B) The plurality of conductors fixed on the circuit board. A plurality of conductors can be electrically connected to the outside by inserting another conductor from the outside in a direction different from the penetration direction at a predetermined position in the middle of the penetration. Conductor holding insulator having conductor fitting hole (c) Elastic contactor fitted in the conductor fitting hole, partially protruding from the fitting hole in the free state, and being pressed from the outside to the depth of the fitting hole or less (D) A plurality of capacitors are arranged, one electrode on the same side of each capacitor is commonly connected to form a ground plane, and the other electrode is one each of the fitted ones. Can contact elastic contactors Capacitor array forming electrode surfaces arranged in a plane at intervals (e) The capacitor array is arranged so that each electrode on the electrode surface abuts on the elastic contactor fitted in the conductor fitting hole of the conductor holding insulator. Pressing and fixing the plate by pressing it and making contact with the ground surface to bring it to the ground potential

[0010]

The operation of the circuit board filter connector of the present invention having the above construction will be described below. The filter connector for a circuit board according to the present invention includes a conductor holding insulator, through which a plurality of conductors (contacts) for contact-connecting a printed conductor of a circuit board and a conductor of an external plug pass, separately from the conductor penetration insulator. An insertion hole is provided for each of the through conductors, and an elastic contact that partially protrudes if not pressed is inserted into this conductor insertion hole, and each capacitor electrode on the electrode surface of the capacitor array makes contact with this contact. Since the capacitor array is fixed by the pressing ground plate that presses and fixes it so that the ground plane becomes the ground potential, each conductor that penetrates the conductor holding insulator without soldering is connected via the capacitor. Grounded, it is possible to configure a filter connector in which the capacitor serves as a filter element.

As described above, the contact of each capacitor of the capacitor array with each penetrating conductor is pressed by the pressing ground plate in a state where each electrode on the electrode surface of the capacitor array is in contact with the elastic contact of the conductor fitting hole. Therefore, it is extremely easy to attach / detach and replace the capacitor array, and the mounting / replacement can be easily performed even after the connector is completely mounted on the circuit board.

[0012]

Embodiments of the circuit board filter connector of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the embodiment. 2 is a sectional view taken along line AA of FIG. Reference numeral 9 denotes a plurality of conductors arranged in parallel at a predetermined interval so as to connect and connect the printed conductor 22 of the circuit board 19 and the multi-core conductor of the external plug, which is called a pin contact in this embodiment. .

Reference numeral 23 is a conductor holding insulator fixed on the circuit board 19 and through which the plurality of pin contacts 9 penetrate, and a spring storing groove 2 which is a conductor fitting hole is provided in the upper part of the penetration of the pin contacts 9. There is. When a washer-shaped spring 11 which is an elastic contactor is fitted into the spring storage groove 2, the lower end thereof comes into contact with the pin contact 9.

The washer-shaped spring 11 is an O-ring having a partially cutout and is an elastic body that returns to its original state when released when it is pressed in the diameter direction so that the notch becomes narrower and the diameter becomes smaller. The size is such that when it is fitted into the spring storage groove 2, a part thereof protrudes from the groove.

Thus, after the required number of washer-like springs 11 have been fitted into the spring storage grooves 2, the capacitor array 16 is placed thereon. The capacitor array 16 has a rectangular parallelepiped shape as shown in FIG. 3B or 3C, and a plurality of capacitors are linearly arranged in parallel as shown in the equivalent circuit of FIG. There is.

One end of each capacitor is connected to a common ground plane, that is, the ground electrode 17 in FIG. 7C, and the other end is provided for each capacitor on the electrode surface opposite to the ground electrode 17. It is connected to the capacitor electrode 18 that is connected. The interval between the capacitor electrodes is aligned with the interval between the spring storage grooves 2. Such a capacitor array 1
When 6 is inserted into the capacitor storing groove 3 on the conductor holding insulator 23 with the electrode surface facing downward, each washer-shaped spring 11 and each capacitor electrode 18 come into contact with each other, and each pin contact 9 corresponds to each washer spring 11. It is connected to each capacitor of the capacitor array 16 via.

In this state, the ground plate 12, which is a pressing ground plate, has its front fixed end 13 inserted into the ground plate insertion groove 4 of the plug connector housing 1, and the lower fixed end 14 of the ground plate 12 is inserted. It is inserted in the ground plate fixing groove 8 and is fixed so as to be tightened together with the ground lug 6 by the metal screw 21. Since the lower surface of this portion of the circuit board 19 is the ground surface 20 at the ground potential, the ground plate is also at the ground potential through the metal screw and the ground lug 6.

By the way, the upper surface of the capacitor array 16 placed in the capacitor storing groove 3 is a ground plane, and the elasticity of the washer-shaped spring 11 fitted in the spring storing groove causes a force to push the capacitor array 16 upward. Therefore, the ground surface of the capacitor array 16 is pressed against the lower surface of the ground plate 12 and comes into contact therewith to be at the ground potential. That is, each pin contact 9 and the circuit board 19
Since a capacitor is connected between the ground plane of and, it functions as a filter that attenuates unnecessary high frequency components.

In the above description, the conductor holding insulator 23 is placed on the capacitor storing groove 3 and then the ground plate 12 is placed.
Although it has been extended by the procedure of pressing with, the conversely, it is possible to insert the capacitor array 16 into the state where the ground plate 12 is previously attached without any problem due to the elasticity of the washer spring.

In the present embodiment, the conductor holding insulator 23 is formed integrally, but it may be formed of two insulators divided by the arrangement surface of the penetrating portion of the pin contact 9. As the elastic contactor, a washer-shaped spring 11 is used.
In addition to the C-shaped ring like the above, the coil may be formed.

As described above, in the circuit board filter connector of the present invention, since the filter capacitor is connected by using elastic contact without soldering, it is easy to attach / detach and replace, and the pin contact 9 Even after one end of the is soldered to the printed conductor of the circuit board, that is, even after the connector is completely mounted on the circuit board, it can be easily attached and detached and replaced, and the number of steps such as assembly and replacement by maintenance and inspection. And cost can be reduced.

[0022]

As described above, in the substrate filter connector of the present invention, the capacitor array is used as the capacitor for the filter, and the connection with the connector conductor is not the conventional soldering but the elastic contact. Therefore, even if it is a multi-core connector, it can be installed all at once in the connector, and it can be installed and removed with a very simple operation, and even after the connector body is completely mounted on the circuit board.・ There is an advantage that it can be easily removed. As a result, even if there are multiple conductors as in the past, 1
Compared to soldering for each conductor, the number of man-hours required for assembly can be significantly reduced, and the man-hours can be reduced at the maintenance and inspection stage because the mounting and dismounting are simple.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a circuit board filter connector of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an external perspective view and an equivalent circuit diagram of a capacitor array used in the present invention.

FIG. 4 is a structural diagram of a conventional circuit board filter connector.

[Explanation of symbols]

 1 Plug Connector Housing 2 Spring Storage Groove 3 Capacitor Storage Groove 4 Ground Plate Insertion Groove 5 Hex Nut for Fixing Fitting 6 Ground Lug 7 Ground Lug Screw Hole 8 Ground Plate Fixing Groove 9 Pin Contact 10 Metal Head Shell 11 Washer Spring 12 Ground Plate 13 Fixed End 14 Lower Fixed End 15 Screw Passing Hole 16 Capacitor Array 17 Ground Electrode 18 Capacitor Electrode 19 Circuit Board 20 Ground Surface 21 Metal Screw 22 Printed Conductor 23 Conductor Holding Insulator 41 Front Shell 42 Ground Shell 43 Soldering 44 External Ground Electrode 45 Dielectric 46 Contact 47 Feedthrough Capacitor 48 Insulator 49 Recess 50 Plug insertion space

Claims (4)

[Claims] 1. A filter connector for circuit boards, comprising the following components. (A) A plurality of conductors arranged in parallel at a predetermined interval so that the printed conductor of the circuit board and the multi-core conductor of the external plug are contact-connected. (B) The plurality of conductors fixed on the circuit board. A plurality of conductors can be electrically connected to the outside by inserting another conductor from the outside in a direction different from the penetration direction at a predetermined position in the middle of the penetration. Conductor holding insulator having conductor fitting hole (c) Elastic contactor fitted in the conductor fitting hole, partially protruding from the fitting hole in the free state, and being pressed from the outside to the depth of the fitting hole or less (D) A plurality of capacitors are arranged, one electrode on the same side of each capacitor is commonly connected to form a ground plane, and the other electrode is one each of the fitted ones. Can contact elastic contactors Capacitor array forming electrode surfaces arranged in a plane at intervals (e) The capacitor array is arranged so that each electrode on the electrode surface abuts on the elastic contactor fitted in the conductor fitting hole of the conductor holding insulator. Pressing and fixing the plate by pressing it and making contact with the ground surface to bring it to the ground potential 2. The filter connector for a circuit board according to claim 1, wherein the conductor holding insulator is composed of two insulators abutting and fixed on a conductor array plane. 3. The filter connector for a circuit board according to claim 1, wherein the elastic contact has a C-shaped ring shape. 4. The filter connector for a circuit board according to claim 1, wherein the elastic contact has a coil shape.