JP2759282B2 - Electrical connector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to an electrical connector, in particular, a receptacle connected to, for example, a coaxial cable or the like, on a plurality of signal pins and ground pins mounted on a circuit board such as a mother board. The present invention relates to an electrical connector for connecting a contact and a grounding electrical contact.

(Prior Art) Conventionally, a rear surface system connected to a plurality of child substrates oriented in an orthogonal direction, or a rear surface system composed of a parent substrate, employs a plurality of connectors to allow the single parent substrate or the rear surface to move from the single parent substrate or the rear surface. Both current and power are delivered to a plurality of daughter boards. Both the parent substrate and the child substrate generally require a number of conductive layers employed on a printed circuit board, and it is very common for the parent substrate to be a multilayer printed circuit board. In each case, a large number of both signal and power contacts are commonly employed to provide the necessary interconnection between the parent board and the child board.

U.S. Pat.No. 4,655,518 discloses a connector for a back-to-back board, in which a two-part connector assembly is used to interconnect the corresponding traces on the master board and the slave board. ing. The connector assembly used to interconnect the parent board to individual independent sub-boards comprises a two-part member, each part having a plastic housing having a plurality of rows of contacts. . Contacts in one connector have receptacle portions for mating with pins in the other connector. This connector also employs a grounding shield on both connector halves. Commercial versions of this type of connector also deliver power from the parent board by using specially prepared power tuning fork contacts located at the end of the connector module (unit structure). . These tuning fork contacts in the daughter board connector border the bus vane, which then borders the rear or inner layer of the daughter board for low power applications. And borders the external bus bar for high power operation.

This type of connector also employs multiple rows of signal contacts. In one embodiment, four rows of signal contacts are employed. A ground plane is required, so that
The impedance of the signal interconnect remains within the expected range. U.S. Pat. No. 4,655,518 discloses one such connector assembly consisting of a connector for a back-to-back board, the connector assembly having a row of signal pins and embedded in a wall of an insulative housing. And a layer ground bus on one side of the row of signal pins.

U.S. Pat. No. 4,616,893 discloses a connector having a grounding bus bar located between two rows of signal contacts. This connector is used to interconnect a plurality of parallel printed circuit boards.

In the assembly disclosed in U.S. Pat.No. 4,755,145, a plurality of daughter boards are removably mounted on a rear surface and engage the contacts on the daughter boards via mating contact points on busbars. It is electrically connected to the bus bar on the same side of the rear surface.

(Problems to be Solved by the Invention) An object of the present invention is to provide a plurality of signal pins planted on a circuit board such as a parent board and a plurality of signal receptacle contacts connected to a signal conductor such as a coaxial cable with high density. And a plurality of signal pins and ground pins mounted on a circuit board such as a parent board and a plurality of signal conductors and ground conductors connected to a signal conductor and a ground conductor such as a coaxial cable, which can efficiently transmit a high-frequency signal. It is an object of the present invention to provide an electrical connector for interconnecting a signal receptacle contact and a grounding electrical contact.

(Means for Solving the Problems) An electric connector according to the present invention comprises a housing, a plurality of signal receptacle contacts which are inserted and held in the housing and are connected to a plurality of signal pins implanted on a circuit board. An electrical connector having a plurality of electrical contacts for grounding inserted and held in the housing and connected to grounding pins mounted on the circuit board, wherein the electrical connector comprises a flat grounding plate embedded in the housing. A plurality of first openings having a diameter larger than the diameter of the signal pin, penetrating the signal pin, and electrically contacting the signal pin with the signal receptacle contact; A ground plate having a plurality of second openings that are inserted and electrically contacted and a third opening that is inserted and electrically contacted with the ground pin, wherein the ground plate is provided with the plurality of grounding pins; The electrical contact and the ground pin are connected in common.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment A rear connector assembly with a preferred embodiment of the present invention provides an interconnect between two orthogonal printed circuit boards employed in a rear assembly used in a computer or similar electronic device. It is intended to be founded.
The connector assembly with the preferred embodiment of the present invention is intended for connecting both power and signals to both boards. The connector assembly includes a rear connector assembly 50, the rear connector assembly 50 includes a rear connector 100 for a parent board, and a signal connector for a child board and power connectors 200 and 300 for a child board, The signal connector for the child board and the power connector for the board 20
Numerals 0 and 300 are for interconnecting signals to both the parent board 2 and one or more of the daughter boards 10, and for interconnecting power.
This connector assembly is suitable for use with a plurality of signal contacts separated from each other by a distance of 0.050 inches, and is connected to both the parent board 2 and the child board 10 by five.
It can be employed using power contacts intended to deliver amps.

Another connector 400 can be employed to connect signal circuit conductors to the motherboard 2 and to rear signal connectors used on the motherboard 2. The preferred embodiment of the present invention employs a coaxial signal connector 400 for a parent board. However, it should be understood that more traditional means of connecting the signal conductor to the motherboard 2 may be employed. For example, individual signal wires may be brazed or directly wrapped to the pins employed in the assembly. Power is also delivered to both parent board 2 and child board 10, also employed in the assembly. In one embodiment, a plurality of separate power connectors are employed, one of which is part of the back connector 100 for the parent board, the other being a connector attached to the daughter board. 300.

The connector assembly with the preferred embodiment of the invention described herein transfers both power and signals to a rear assembly consisting of one parent board 2 and one or more daughter boards 10. In addition to delivering, the connector assembly may be employed in such a way that the impedance of the signal transmitted through the connector assembly matches the impedance of the equipment using the rear connector assembly. it can. For example, the preferred embodiment of the present invention is intended for use in a rear connector assembly requiring a controlled impedance of 75 ohms.

The individual components of the connector assembly will now be described in more detail individually.

Signal input coaxial connector for parent board (see Figs. 1, 4A and 4B) The coaxial connector (electric connector) 400 used to connect the signal conductor 410 to the parent board (circuit board) 2 is Ryton. Housing 4 made of material like
It consists of 02. The housing 402 has a plurality of openings 404. Each opening 404 receives a signal receptacle contact 406 or a ground electrical contact 408. The signal receptacle contact 406 is crimped to a central signal conductor 412 of a conventional coaxial cable 410, and the grounding electrical contact 408 is an outer braid 414 surrounding the signal conductor 412.
Is connected by crimping. Also, the coaxial connector 400
There is also a flat grounding plate 420 made of a conductive material embedded in the housing 402. The ground plate 420 has a plurality of resilient second openings 424. Each second opening 424
Is a slit 426 penetrating the grounding body 420, and a slit 426
And a plurality of open tongues 428 extending inward and upward of the slit 426. Since the grounding electrical contact 408 connected to the outer braided material 414 projects upward beyond the signal receptacle contact 406, the grounding electrical contact 4
08 is inserted into these second openings 424 from below the ground plate 420 and makes electrical contact with the opening tongue 428. Also, ground plate 420
Also has a plurality of circular first openings 422. The first openings 422 are aligned with the signal receptacle contacts 406, but the signal receptacle contacts 406 do not pass through the first openings 422. On the other hand, the first opening 422 has a diameter larger than the diameter of the signal pins 104 implanted on the parent board 2, and
Are adapted to penetrate and electrically contact the signal receptacle contacts 406. In addition, the ground plate 42
0 has a plurality of third openings 425. These third openings
425 includes a grounding pin 106 planted on the mother board 2
4 is inserted from above the ground plate 420 to make electrical contact.
Accordingly, the ground plate 420 includes a plurality of grounding electrical contacts 408 connected to the outer braided material 414 of each coaxial cable and the mother board 2.
And the ground pin 106 implanted in the common cable is connected in common, and all of the outer braided members 414 of the coaxial cable
It is grounded to the mother board 2 via 420 and the ground pin 106.
At this time, the signal conductor 412, the signal receptacle contact 406, and the signal pin 104 are not short-circuited.

Rear connector for parent board (signal area) (see FIGS. 1 to 3) The rear connector 100 for parent board includes a plurality of signal contacts 1
04, having a ground plane contact or ground bus 106,
Each of these is mounted within an insulative housing 102 formed from a material such as Ryton. The insulating housing 102 has a base 108, and the base 108 is connected to the signal contact 104 and the ground bus 106.
Are both penetrated, and the insulative housing 102 has a laterally and upwardly extending wall 110, which forms a cavity 112 along the upper side of the motherboard rear connector 100. I have. Each signal contact 104 has an upper area 114 and a lower area
It is in the form of a pin having 116. Pin 104 for each signal
Lower section 116 includes a spring contact 118, which
Numeral 8 is configured to interconnect with plated through holes in the printed circuit board 2. However, it should be understood that the lower area 116 of the signaling contact (pin) 104 may have other shapes, such as the shape of a conventional brazing pin. The lower section 116 of each signal pin contact 104 has a barb 120 which secures the signal contact pin 104 in the lower foundation 108 of the insulative housing 102 of the rear connector 100 for the parent board. It is for. The lower area 116 of each signal pin contact 104 has a central bend 122
Eccentrically from the upper pin area 114 and
Is arranged on the base 108. Pin area 11 above
4, and the lower pin area 116 can protrude from different points of the bend 122 so that the signal contact pin 104
Can be formed such that the plurality of such areas 114 are in a row and the lower pin areas 116 are eccentric or staggered.

The four rows of lower contact pins 116 are formed with the lower pin areas 116 in adjacent rows separated by a distance of 0.100 inches from each other. However, the upper contact pin area 114
Are all spaced 0.050 inches apart in a single row. Thus, the contact pin areas 114 may be closely spaced from each other, while the lower areas 116 may be spaced apart from each other by a distance that facilitates the manufacture of a conductive layer on the printed circuit board 2. it can.

The ground bus 106 is located between the inner and outer rows 104A and 104B of the signal contact pins 104 and also has a plurality of depending legs 124, which are plated in the printed circuit motherboard 2 This type is suitable for making a resilient contact with the through hole 6. These spring-like contacts 126
Has the signal contact pin 104, so that it can be replaced with a pin that is brazed into the through hole. A single ground busbar 106 formed in the motherboard rear connector 100 extends laterally along the length of the base 108 and forms a cavity 112 formed above the insulating housing 102. Protrudes upwards to the middle. 0.100
Multiple posts (pins) separated from each other by inches
128 projects upward from the top of the ground plane contact or busbar 106. The width of these pins 128 is equal to the width of the ground plane bus bar 106. Area Zone 132
Are formed on the upper edge of the bus bar 106 between a plurality of upright columns 128 adjacent to each other. Rear connector 10 for the parent board
0 is shaped so that the plurality of signal contact pins 114 are equally spaced from the ground bus 106. However, the lower signal contact portions (areas) 116 are spaced from the ground plane legs 124 at different distances.

Rear-panel signal connector for sub-board (see FIGS. 1 and 10-13) The rear-panel signal connector for sub-board 200 is an insulating housing 2 made of a material such as Ryton.
02 and has a plurality of signal and ground contacts 204 and 206 disposed therein, respectively. Each of the signal contacts 204 has a box-type receptacle 208 similar to the receptacle 406 contained within the coaxial connector 400. Each of the signaling contacts 204 has a signaling contact leg 210 that extends perpendicular to the receptacle contact portion 208. Rear connector 1 for parent board
The upper length of signal pins 114 in 00 is longer for row 104B on the top of ground plane bus 106 than for row 104A on the inside of ground plane bus 106. Therefore, the receptacle contacts 208 are not arranged at the same height. Each leg 210 protruding from the receptacle portion of the signal contact for the daughter board is provided with a contact 104 for interconnecting with a trace (conductive printing path) on the mother board 2.
Are arranged alternately in the same manner as the lower signal area 116.

Instead of a single continuous ground plane in the daughter board signal connector 200, a plurality of grounding blades 206 are arranged between the plurality of signal legs 210 having the largest distance. Each wing 206
And the corresponding receptacle 208 has a central section 214, which has a vertically extending lower section or arm 216, which is in the outermost row It extends between receptacle portions 208b of the signal contacts. The arm 216 extending in the vertical direction of the blade has a spring-shaped contact 218 divided into two branches, and the spring-shaped contact 218 is disposed at the lower end of the arm 216, and the ground plane of the connector 100 for the parent board. It is suitable for making elastic contact with the base of the utility bus 106. A central section 214 of each blade 206 extends above the innermost receptacle 208 and comprises a horizontal arm section 220;
This arm area 220 is the outermost receptacle contact 208b
Extend adjacent the right angle portion of the leg 210. These grounding vanes 206 are located only between the daughter board signal contacts 208b, which have a plurality of legs that are relatively spaced apart from each other over a greater distance than the narrower, spaced apart contacts. . The legs 216 of each grounding vane 206 are surrounded by six equally spaced contact legs 210, which contact legs 210
Note that are arranged hexagonally and surround each grounding vane leg 216. When the grounding blades 206 are fitted to the grounding plane 106 of the motherboard connector 100, the grounding blades 206 extend between a plurality of adjacent columns 128 projecting upward. The shape of the grounding blade and the shape of the grounding support are signal contacts.
And the arm, so that a constant impedance is provided for signals transmitted through the back connector assembly including the back connector 100 for the mother board and the signal connector 200 for the slave board. Note that it is maintained.

The sub-board signal housing 202 includes a multi-part insulated member including a base 222 and at least one cap member 224. In a preferred embodiment of the present invention, a single base member 222 is employed, and a plurality of juxtaposed cap members 224 are securable to the single base member 222. The base member 222 has two rows of cavities 226 to receive a single contact. The cavities 226 in each row are spaced apart from each other by a small distance. In a preferred embodiment of the present invention, the spacing is 0.050 inches between the centerlines of adjacent cavities 226. The top of each of these cavities 226 is dimensioned to receive the receptacle portion 208 of each signal contact 204.

The upper surface of the insulating base member 222 has a step shape, and one step of the signal receptacle cavity 226A is
Disposed along 228, another step of the cavity 226B extends inwardly into the upper surface 232 of the upper step 230. The lower step 228 of the base member 222 has a groove 236,
Extends to the front surface 238 and the upper surface 23 of the lower step 228
It communicates with cavities 226A in alternating rows 244 extending over four. The support base 240 has a plurality of cavities 226A in alternating rows 244.
And the front surface 238 of the base 222.

On the upper step 230, from the upper surface to the lower surface of the base 222, grooves 242 communicating with other cavities 226B in alternating rows 246 are located near the cavities 226A in the rows 244. And extends to the edge of the upper step 230.
Between the grooves 242 and other alternating adjacent cavities 246 extending to the upper step 230 are tops 248 that rise upward from the upper surface 232 of the upper step 230. Extending. Each of these ridges 248 has a ridge 252 extending along the top thereof from the corresponding cavity to the front of the upper step 230. A plurality of pores 252
Extending from the lower surface of the base 222 in alignment with the top 248 located along 230. These pores 252 are adjacent to a plurality of other pores 254 in a state of being aligned with the top 248, and the pores 254 are adjacent to the plurality of grooves 242 of the upper step 230, or alternate grooves 242. , To the lower surface of the base 222.

A plurality of signaling contacts 204 are mounted from the top surface of the base 222 and into each of the aligned signaling cavities 226. Next, each signal contact 2 in the row of signal cavities along the lower stage 228
04 contact legs 210 are folded onto the base 240 or between a plurality of adjacent bases 240.

A plurality of grounding vanes 206 are similarly inserted from the upper surface of the base 222 into the pores 254 communicating with the base 222. A lower section 216 of each of the grounding vanes 206 is inserted into a corresponding pore 254, and a central section 214 and an upper section 220
Extend above the upper step 230 of the base 222. The rear signal contact 204 longer than the front signal contact 204 is
Through the upper surface 232 of the zero, it is inserted into the appropriate signal cavity 226 in the upper stage 230. Next, the legs 210 coming out of these rear signal contacts 204 and aligned with the top 248,
Folded into a crest groove 250 formed along the top surface of crest 248, such that the legs 210 of these alternating rear signal contacts 204 were inserted earlier into base 222. It extends substantially parallel to the leg of the signal contact 204 on the front side.

After the signal contact 204 has been inserted into the insulating base 222, one or more cap members
224 is attached to the upper surface of insulating base 222. In a preferred embodiment of the present invention, a plurality of cap members 224 are employed, thus providing access to the individual contacts for serviceability. Each cap member 224 has a plurality of recesses 258 communicating with the front surface of the cap member 224. An alternating recess 258a extends completely through the cap member 224 from the top surface 260 to the bottom surface 262 and is in communication with the front surface 264. Near these first-mentioned recesses 258a, a pair of recesses 258b and 25
8c, of which one recess 258b is
From the rear surface to the upper surface 260, in which case the groove 266 extends downwardly from the concave portion 258b to the cap member 224.
Is formed toward the bottom surface 262. The other recess 258c of these pairs of recesses extends inward from the front surface 264 and is spaced from the upper surface of the cap member 224 by an inner rib 268. Note that the profile of the inner rib 268 is completely complementary to the top of the grounding blade 206. The recesses 258a and 258b communicating between a top surface 260 and a bottom surface 262 along the entire length of the front surface 264.
The extension steps 270 of their lower edges fit onto the base 240 on the upper surface 234 of the lower step 228 of the base 222, thereby folding between the base 240 and the recess 258c. Restrain the lead body. Upper lead body (leg) 210 of rear contact 204b
Initially extend straight upward from the receptacle 208B. However, the upper portion of the recess 258b is open, and therefore, the straight lead body 210 is
b, so that it can be bent downward by a tool insertable into it, so that the lead is parallel to the other leads 210 extending towards the daughter board 10.
Then it is bent at right angles. The upper part of the grounding blade 206
It is mounted in a complementary concave portion 272 formed below the inner rib 268, and at this time, the ground vane lead body 220 for the child board is
It projects outward from the front surface 264 of the cap member 224. In this manner, the signal contacts 204 for the sub-board, the grounding blades 206 for the sub-board, and the housing 202 for the sub-board can be assembled. A pore 2 extending completely from the lower surface of the insulating base 222 near the ground vane pore 252 completely penetrating the insulating base 222 and aligned with the top 248 of the upper part.
Note that 52 is dimensioned to receive an upright post 128 on the ground plane bus 106 so as to form a comb in the signal portion of the motherboard rear connector 100.

Rear Connector for Main Board (Power Area) (See FIGS. 1 to 3) In a preferred embodiment of the present invention, the rear connector 100 for the main board includes a power area integrated with the signal connector area for the main board. I have. The rear insulating housing (connector) 100 for the parent board includes a power section 134 in addition to the signal pins 104 and the ground bus pins 124, and the power section 134 includes a male power blade 136.
And an opening 144 for receiving the through-hole leg 138. A plurality of through-hole legs 138 project from each power blade 136 located in a pocket 142 above the power section 134 of the insulative housing. The plurality of legs 138 provide a sufficient cross-sectional area for conducting electric power from the electric power trace on the mother board 2 to a single blade arranged at right angles to the sub-board 10. . Each leg 138 is a base board 2
It has an integral resilient spring area 140 for contacting the plated through hole 8 therein.

Sub-board power connector (see FIGS. 1 and 2) The sub-board power connector 300 is completely separated from the sub-board signal connector 200. The daughter board power connector 300 includes a housing 302.
2 includes a plurality of juxtaposed cavities 304, each of the cavities 304 receiving a single daughter board power contact 306, wherein the daughter board power contact 306 forms a power trace in the daughter board 10. for,
Surface mounting is performed via the surface mounting pad 12. The individual power contacts 306 in the daughter board power connector 300 each have a double U-shaped contact leg 308,
Project downward and are arranged at right angles to the sub-substrate 10. Each U-shaped leg 308 is resilient and is adapted to receive a single blade for delivering power from the motherboard 2. Even if the parent board power blades are fitted at different lateral positions with the child board male power contacts 306, contact can still be achieved.
Note that the width of the parent board power blade is set. Therefore, the shape of the power blade does not require the use of a child substrate 10 having a specific thickness. Elastic spring-shaped legs 308 in the receptacle contacts 306 for the daughter board
Project downward from the box-shaped section 310 of the stamped power contact 306. The surface mounting foot 312 having the shape bent in the opposite direction is used for the surface mounting power pad 1.
It extends orthogonally to the box-shaped area 310 so as to achieve contact with the two.

Rear connector for power supply board with stacked power buses (power area) (see FIGS. 14-18) The power area of the housing of rear connector 100 for power supply board has an integral part thereof. The continuous groove 150 extends along the entire length of the rear connector 100 for a motherboard.
The groove 150 is formed by an outer wall 152 that is a part of the housing of the connector 100 and a parallel inner wall 154 that is arranged near the lower edge of the daughter board 10. A stacked bus bar 500 is located in the groove 150 between the outer wall 152 and the inner wall 154.

The stacked power buses (bars) 500 comprise a series of individual buses 5 housed within an insulative housing 504.
02A to 02D. Each of the bus bars 502 is made from a conductive metal, such as a conventional copper alloy that is conductive. In the preferred embodiment of the present invention, there are four buses, two of which deliver different voltages of power, while the other two are maintained at ground potential. The four buses 502A
D are parallel to each other, all partially housed in conventional insulating material. This insulating material protects the part of the busbar that is partially accommodated. Each of the bus bars 502 has a plurality of contact protrusions 506 that are bent at right angles to the bus bar 502 and protrude upward. In the preferred embodiment of the present invention, the width of the projection 506 is approximately equal to the width of the stacked power bus 500. The height of the grounding lug may be higher than the height of the power lug 506 so that the grounding lug can make contact first and finally separate. Each lug 506 extends across the other three busbars, and thus the lugs 506 are arranged in a juxtaposition, and the interconnect 508 between each lug 506 and each busbar 502 is They are alternately arranged along the length of the service bus 500. A notch separates a portion of each lobe from the interconnect. Next, each protruding piece 506 is located at a predetermined position so as to be fitted to the contact 308 or 308 'of the female power contact for the sub-board. Well, the protruding piece 50
6 will be oriented at right angles to the sub-substrate 10.

Each power bus 502 includes an integral leg 510, which includes means for attaching each bus 502 to an outer conductor 512.
In one embodiment described herein, the outer conductor 512
Is made of a wire that is an external member with respect to the mother board 2.
Therefore, there is no need for the power trace to be incorporated into the mother board 2. In this embodiment shown here, the legs 510
Have screw holes, which allow screwed termination between the wire and each busbar 502. It goes without saying that other conventional outer conductors and other conventional termination means can be easily adopted, and the bus bar may be directly attached to the parent board as shown in this embodiment. .

(Effect of the Invention) According to the electrical connector of the present invention, the signal pin has a diameter larger than the diameter of the signal pin implanted on the circuit board, penetrates the signal pin, and is inserted and held in the housing. A plurality of first openings that are in electrical contact with the signal receptacle contacts, a plurality of second openings in which the plurality of grounding electrical contacts inserted and held in the housing are inserted and are in electrical contact;
A grounding plate having a third opening through which a grounding pin implanted in the circuit board is inserted and electrically connected, the grounding plate connects the plurality of grounding electrical contacts and the grounding pin in common, No separate connecting means is required for each ground pin and each ground contact. For this reason, a plurality of signal pins planted on a circuit board such as a parent board and a plurality of signal receptacle contacts connected to a signal conductor such as a coaxial cable can be arranged at high density, and high-frequency signals can be efficiently transmitted. Can be transmitted. Further, since the grounding plate is embedded in the housing and formed in a flat plate shape, the structure of the grounding plate can be simplified and the entire electrical connector can be made compact.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a rear connector assembly according to the present invention, which includes a rear connector for a parent board, a signal connector for a child board, a power connector for a child board, and a coaxial input connector. , All of which have one parent board and one
FIG. 9 is a perspective view of the rear connector assembly so as to be attached to two daughter boards. FIG. 2 is an exploded perspective view of the connector for a parent board, which is positioned to fit the power connector for a child board and the signal connector for a child board. FIG. 3 is a perspective view of the rear connector for a parent board. FIGS. 4A and 4B show the signal contacts and grounding contacts for the parent board and the contacts for the daughter board at adjacent positions, and also show the coaxial input contact and the ground plane for the coaxial input connector. It is an exploded perspective view. 5 to 8 are sectional views taken along section lines 5-5, 6-6, 7-7 and 8-8 in FIG. 3, wherein the rear connector for a parent board; It is sectional drawing which shows the position of the said grounding contact and the signal contact in the said signal connector for child boards. FIG. 9 is a cross-sectional view similar to FIG. 8, but showing a fitted state of the rear connector for the parent board and the signal connector for the sub-board. FIG. 10 is an exploded perspective view showing a part of a cross section of an insulating housing of the signal connector for a child board. FIG. 11 to FIG. 13 are a series of sectional views showing the assembly of the signal connector for a child board. 11A to 13A are cross-sectional views taken substantially along the line AA of FIG. 11B to 13B are BB views of FIG. 10 parallel to the line AA.
FIG. 4 is a sectional view taken substantially along the line. 14A and 14B are perspective views showing the child board power connector immediately before being fitted to the stacked power bus. FIG. 15 is an exploded perspective view showing the manner in which the stacked bus bars are located in the parent board housing. FIG. 16 is a perspective view of the bus bar from which an insulating material has been removed. FIG. 17 is a perspective view of the individual independent bus bars. FIG. 18 is a sectional view of a bus bar in the housing. 2 ... parent board (circuit board), 104 ... signal pin 106 ... ground pin, 400 ... electric connector 402 ... housing, 406 ... signal receptacle contact 408 ... ground electrical contact, 410 ... coaxial cable 420 ... ground plate, 422 ... First opening 424 ... second opening, 425 ... third opening

Continued on Front Page (31) Priority Number 219949 (32) Priority Date July 15, 1988 (33) Priority Country United States (US) (72) Inventor David John Kimmel United States of America Florida 33575 Clearwater Apartment 16 -Be Laurelwood Drive 2588 (72) Inventor Thomas Jay Sotrongo 33515 Florida, United States Clearwater Beach Apartment Sea 806 South Bayway Boulevard 855 (56) References JP-A-57-92764 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) H01R 23/68

Claims (1)

(57) [Claims] 1. A housing, a plurality of signal receptacle contacts inserted into and held in the housing and connected to a plurality of signal pins mounted on a circuit board, and the circuit board inserted into and held by the housing. An electrical connector having a plurality of grounding electrical contacts connected to the grounding pins implanted in the housing, a flat grounding plate embedded in the housing, having a diameter larger than a diameter of the signal pin. A plurality of first openings that have the signal pins penetrate therethrough and that the signal pins electrically contact the signal receptacle contacts, and a plurality of second openings that the grounding electrical contacts are inserted into and make electrical contact with
A third opening through which the ground pin is inserted and makes electrical contact;
An electrical connector comprising: a grounding plate having an opening; and the grounding plate connects the plurality of grounding electrical contacts and grounding pins in common.