JPH10189153A - Filter connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter connector simply connected with filter elements at a high density to contact terminals, having a very simple structure, and easy to manufacture at a low cost by clamping and electrically connecting the filter elements between the base sections of the contact terminals and the collars or shields of housings. SOLUTION: A plurality of contact terminals 20 having pin sections and pressure connection base section 28 are held in the first and second insulating housings 2, 12 of the first and second connectors. The insulating housing 2, 12 contain supports 4, 14, anchors (fixed section) 7, 17, and collars 8, 18. Shields 10, 11 are arranged in the insulating housings 2, 12. Filter elements 34 (chip-like capacitors) are arranged between the collars 8, 18 and pressure connection base sections 28 in contact with shields 10, 11. A small-sized, high-density filter connector can be formed without largely changing a conventional connector, and it can withstand a large surge voltage of about 2500V.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a filter connector,
Particularly, the present invention relates to an electrical connector for filtering a large transient voltage (surge).

[0002]

2. Description of the Related Art Multi-contact electrical connectors having an insulated shell housing and multiple contacts are well known. It is also well known in adapters to arrange two multi-contact connectors back to back with each other and to electrically connect the contacts of each connector in the adapter to the contacts of a second connector in the same adapter. The contacts of each connector in the adapter are interconnected by known means, typically wires or other intermediate conductors.

[0003] The insertion of filter elements into connectors and adapters is also well known and preferred. A common filter element is a capacitor, which is in electrical contact with the contacts of a connector or adapter. This capacitor is typically interconnected between one of the contacts and a reference potential. The filter connector and the adapter can protect equipment in which the connector and the adapter are used from transient voltage surge.

[0004] US patent application Ser.
No. 8,380,485 discloses a multi-contact filter adapter. The contact and the ground bar are held in an insulated housing. A filter element, typically a capacitor, is arranged to electrically interconnect between each contact of the adapter and the ground bar. Each contact has a press contact portion. The wire terminated to this crimp captures the filter element between the wire contact, the housing and the ground bar. The filter adapter has an effect that it can be easily assembled without soldering.

[0004]

However, as long as this adapter does not increase the dimensions of the connector and change the processing method,
It has the disadvantage that it cannot withstand a 2,500 volt transient surge voltage, depending on the size of the capacitor used.
Therefore, there is a need for a multi-contact filter connector and adapter that can withstand a 2,500 volt transient surge voltage in a small connector package.

One object of the present invention is to overcome the above-mentioned disadvantages of the prior art, especially for small connector packages of 2,500.
It is to provide a filter electrical connector and adapter that withstands volt transient surge voltages.

It is another object of the present invention to provide a filter electrical connector and adapter that is easy to assemble.

[0006]

According to the filter connector of the present invention, the filter connector has a plurality of contact terminals fixed to the insulating housing, and each contact terminal has a pin portion and a base portion. Insulation housing supports, anchors (fixed part)
And colors. A conductive shell is disposed in the insulating housing. A filter element is disposed between the collar and the base and contacts the shield or conductive shell.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a filter connector according to the present invention will be described below in detail with reference to the accompanying drawings.

Although the present invention is applicable to various types of electrical connectors, the electrical connectors disclosed in US Pat. No. 3,760,335 and the aforementioned US patent application Ser. No. 08 / 380,485 are disclosed. And adapters. Therefore, these conventional examples are incorporated here as reference data.

Referring first to FIG. 1, there is shown a plan view of a conventional multipoint adapter without a filter. The adapter comprises a first housing 2, which is preferably a plug housing, and a second housing 12, which is of the receptacle type, superposed thereon. The first and second housings 2, 12 are arranged back to back with respect to each other,
An adapter having a receptacle type connector 12 in a direction opposite to the plug type connector 2 is formed.

The present invention is equally applicable to embodiments comprising a single housing which, when terminated to a cable, constitutes a cable assembly. First and second housings 2,
12 may be either a plug type or a receptacle type,
There can be three configurations: plug-to-plug, plug-to-receptacle (example shown), and receptacle-to-receptacle. Each housing is VALOX, a trademark of US GE
And is typically manufactured by injection molding. Each insulating housing 2, 12
Holds the contact terminal 20 inside. These contact terminals 20 are made of a conductive material, typically a metal, and are typically arranged side by side with a standard center space of about 2.16 mm.

Next, a description will be given with reference to FIG. The figure shows a cross-sectional view of the connector without the filter of FIG. Each housing 2,12 further has supports 4,14 and shrouds 6,16. The supports 4 and 14 are plate-shaped members made of an insulating material along the centers of the housings 2 and 12. The contact terminals 20 are arranged on each side of the supports 4, 14 and form two opposing rows of contacts 20 held by the housings 2, 12. The supports 4, 14 physically separate the opposite contact terminals 20 from each other.

In the plug housing 2, the support 4 is
Limiting the lateral deflection of the flexible contact terminal 20 when mating the connector. Also, the receptacle housing 12
In this case, the support 14 does not extend as much as the contacts, allowing the receiving of a mating plug (not shown). Housing 2, 1
2 further has a fitting or shroud 6, 16 integral with the anchors 7, 17 and the collars 8, 18. The shrouds 6, 16 receive or receive a complementary mating portion of a mating connector. Anchors 7, 17 are planar supports 4, 14
Made of an insulating material having a length substantially parallel to. Each contact terminal 20 is held between supports 4, 14 of housings 2, 12 and anchors 7, 17. Each contact terminal 2
Numeral 0 comprises a pin (contact portion) 22 and a root (or root) 24. The pin 22 is connected to the fitting end 44 of the housing 2, 12.
Orient and perform the function of the connector. Contact terminal 20
Pins 22 can take a variety of shapes. To give two examples, FIG. 2 shows a receptacle type and a plug type. The route 24 is the opposite end of the contact terminal 20 from the pin 22. The root 24 comprises a pressure contact 26, a plate 28 and a spacer 30, the root 24 and the pressure contact 26 being at right angles to the intermediate spacer. The crimp 26 of the root 24 is of a conventional design consisting of a tapered slot formed in a metal plate. The connection wire 32 is connected to the opposite contact terminal 20.
At the press-contact portion 26 of the main body. For an adapter configuration,
The connection wire 32 is connected to the contact terminal 2 of the first housing 2.
0 is electrically connected to the contact terminals 20 of the second housing 12 so that the contact pins 22 of the first housing 2 and the contact pins 2 of the second housing 12 are electrically connected to each other.
The electrical interconnection between the two is made. The press contact portion (base portion) 28 of the route 24 is formed of a flat conductive portion integrated with the pin 22 of the contact terminal 20. The base 28 is at right angles to the pin 22.

In the preferred embodiment, the base 28 is
And is formed by bending the contact terminal 20 at a right angle. Since the contact terminal 20 is made of metal, the right angle of the pin 22 and the base
And the base 28 with a certain elasticity. This advantage will be described later. The press contact portion 26 and the base 28 are connected to the conductive spacer 30.
Are interconnected.

In the preferred embodiment, the spacer 30 forms a portion of the contact terminal that is continuous and integral with the crimping portion 26 and the base 28 of the route 24. In the adapter, the length of the spacer portion 30 of the route 24 is sufficient to insert and hold the connection wire 32 in the press-contact portion 26.
Also, a gap is provided between the wire 32 and the base 28.

Next, a description will be given with reference to FIGS. These figures show exploded perspective views of the adapter with a filter according to the present invention. 3 and 4 show the first shield 10 mounted on the first and second housings 2, 12, surrounding one side (half) of the adapter. A second shield 11 surrounds the other half of the adapter. The first and second shields 10, 11 are made of a conductive material and are typically castings. As shown, many screw holes 46, tapers 48,
A securing member 50 is included in the shields 10, 11 to provide a complete shield (shield) and proper retention between the shields 10, 11 and the housings 2, 12.

FIG. 5 is a sectional view of a filter adapter according to the present invention in an assembled state. The shielding of the adapter is effected by inserting a filter element 34 into a recess formed by the base 28 and the collars 8,18. Filter element 3 in the example of FIG.
Reference numeral 4 denotes a chip-shaped capacitor (chip capacitor) having an appropriate size inserted and held between the base 24 of the contact terminal 20 and the collars 8. The distance between the centers is 0.
For a multi-contact adapter that can withstand a 2,500 volt surge voltage at 085 inches (about 2.2 mm) for 60 seconds, the preferred chip capacitor dimensions are 0.18 inches (about 4.6 mm) long and 0 inches wide. .125 inches (approximately 3.
2mm) Maximum thickness is 0.024 inch (about 0.6mm)
And has a capacitance of about 0.10 μF. However, the width of the filter element 34 is selected according to the dimensions between the inner wall 36 of the collar 8 and the base 28. The base 28 is preferably flexed slightly when the filter element 34 is inserted. Base 2 for rest of contact terminal 20
8, the holding force to the filter element 34 is generated,
This is at the same time the first contact portion 42 of the filter element 34.
a and the connection between the base 28 is guaranteed.

Further, the shrouds 6 and 16 have an inner wall 36 and a floor 38. These inner walls 3 of the shrouds 6 and 16
6 and the floor 38 are formed in a mutually orthogonal relationship. The contact terminals 20 are arranged such that the pins 22 are held between the supports 4, 14 and the anchors 7, 17, thereby creating a mutual contact area 40.

The pin 22 extends beyond the mutual contact area 40 and the end of the floor 38 a predetermined distance from the route 24.
Base 28 is perpendicular to pin 22 and parallel to inner wall 36. The chip capacitor 34 is inserted so that its length engages with the inner wall 36. A portion of the width of capacitor 34 contacts floor 38 and another portion of capacitor 34 contacts base 28. Therefore, the filter element 34
Is received in combination with a portion of the inner wall 36, floor 38 and base 28. The contact portion 42 of the filter element 34 is in electrical contact with the base 28, thereby electrically connecting the pin 22 and the press contact portion 26. Inner wall 36
Is less than the length of the chip capacitor 34.

In order to absorb the manufacturing tolerance (variation) of the standard chip capacitor 34, the length of the inner wall 36 is selected so that the maximum length of the chip capacitor can be received and the second contact portion 42b of the chip capacitor is exposed. Is done.

The first shield 10 is arranged on the first and second housings 2, 12 and the second shield 10 of the filter element 34.
It makes physical contact with the contact portion 42b. In a preferred embodiment, the shields 10, 11 are formed thicker at the center than at the rest. An alignment shoulder 52 is formed at the transition between the thick central portion and the thin outer portion. The alignment shoulder 52 provides resistance to the filter element 34 and prevents the filter element 34 from rotating away from the floor 38, thereby maintaining proper alignment of the filter element 34 with the base 28. Shielding conductive adhesive such as conductive RTV
1 to improve conductivity between the shields 10, 11 and the filter element 34. Next, shield 1
0, 11 are mounted on the housing 2 in a known manner, for example with screws, to obtain an assembled filter adapter.

Referring now to FIG. 6, there is shown a plan view of a filter adapter (or filter connector) according to the present invention. As shown in FIG. 6, the filter adapter has a number of chip capacitors 34. In the preferred embodiment, one capacitor 34 is connected to each contact terminal 20. Therefore, as shown in FIG. 6, in this embodiment, the capacitors 34 are arranged at every other position as described above.

FIGS. 7 and 8 show another embodiment of a cable assembly having a filter electrical connector according to the present invention. Here, each of the shields 10 and 11 is made of a sheet-like conductive material, and is arranged along the inner wall 36 of the collar 8. Each shield 10, 11 extends the entire length of the collar 8 and connects the connector to the bulkhead when the securing member 50
It is configured to make physical and electrical contact with the The fixing member 50 makes electrical contact with the shields 10 and 11 of the bulkhead to which the connector is attached so as to ground the shield to the chassis potential.

In the embodiment of FIG. 8, the filter element 34 is arranged such that the first contact portion 42a faces the first shield 10 arranged on the collar 8 and is in direct contact therewith. The second contact portion 42b faces the base portion 28 and is in direct contact therewith. The elasticity of the root 24 frictionally retains the filter element 34 in the recess formed by the collar 8, floor 38 and root 24. In the embodiment of FIG. 8, the filter element 34 is
4 is 0.120 inch (about 3.1 mm) long, 0.06 inch (about 1.5 mm) wide and 0.050 inch (about 1.3 mm) deep and has a standard of 470 PF capacitance It consists of a 1206 chip capacitor.

In this cable assembly, the filter element 34 is connected to each contact terminal 20 of the connector. The cable conductor 60 of the cable assembly is terminated to the press-contact portion 26 of the filter connector. The strain relief 61 of the cable assembly is, as shown in FIGS.
For example, they are made of a pair of hermaphroditic halves by injection molding of a thermoplastic material such as VALOX ™. Each strain relief half has a generally C-shaped cross section with a locking tab 62 at each end. One tab of each strain relief half has a notch 63 and the other has a complementary barb 64 to frictionally engage each other as shown in FIG.

The two strain relief halves are route 2
4 attached to the top and bottom of the connector having
And the barb 64 frictionally engage each other to hold the strain relief 61 to the housings 2,12. Wire holding part 6
7 is arranged at right angles to the bridge portion 65, and the filter element 34 is also arranged at right angles to the holding portion 66. Wire holding part 6
The filter element 7 and the filter element holding section 66 prevent the filter element 34 and the conductor 60 from moving away from the floor section 38 and the press contact section 26, respectively.

Although the filter connector of the present invention has been described in detail based on the preferred embodiment, the present invention should not be limited to the specific embodiment, but may be variously modified according to the application. Those skilled in the art will readily understand.

[0027]

As will be understood from the above description, according to the filter connector of the present invention, the filter element is sandwiched between the base of the contact and the collar or shield of the housing and electrically connected, so that the structure is extremely simple. And
It is easy and cheap to manufacture. In addition, according to the filter connector of the present invention, a conventional (existing) connector can be formed with a small size and a high density without significantly changing the connector.
It is possible to withstand a large surge voltage of about 0 volt. According to the filter connector of the present invention, a filter adapter having a female connector and a male connector at both ends can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of an adapter without a filter element.

FIG. 2 is a sectional view of the connector of FIG. 1;

FIG. 3 is an exploded perspective view of a filter connector according to the present invention.

FIG. 4 is an assembled perspective view of the filter connector of FIG. 3;

FIG. 5 is a sectional view of the filter connector of FIG. 4;

FIG. 6 is a plan view of the filter connector of the present invention without a shield.

FIG. 7 is a cross-sectional view of a connector without a filter of the cable assembly.

FIG. 8 is a sectional view of the cable assembly connector of FIG. 7;

FIG. 9 is a cross-sectional view of another embodiment of the fill connector according to the present invention.

FIG. 10 is a perspective view of a strain relief used for the filter connector of the present invention.

[Explanation of symbols]

 2, 12 Insulated housing 10, 11 Shield 20 Contact terminal 28 Base (press-contact part) 34 Filter element (chip capacitor)

Claims (2)

[Claims] 1. A filter connector comprising an insulating housing, a contact terminal held in the insulating housing, and a filter element, wherein the contact terminal is of a press contact type having a press contact base, and the filter element is provided on the contact terminal. A filter connector characterized by being held and connected to a press contact base. 2. A filter connector in which first and second housings each having a plurality of press-contact type contact terminals are connected to each other back to back and connected by a shield, wherein a filter element is connected to the press-contact base of the contact terminals and the base. A filter connector characterized by being disposed between shields and electrically connected.