JPH0515375U - Multi-core coaxial connector for printed circuit board with power supply contact - Google Patents

Abstract

(57) [Summary] [Purpose] To mix power supply and signal, reduce the influence of noise, and facilitate coupling operation. A central portion of the first connector 22 is projected forward to form an insertion portion 23a, a plurality of signal pins extending in the front-rear direction are arranged in the insertion portion 23a, and base projection portions 23b on both sides of the insertion portion 23a are arranged. , 23c, the power supply pin contact 25 is projected from the front surface of the insertion portion 23a. An opening 28 into which the insertion portion 23a is fitted and inserted is formed in the center of the front surface of the second connector 26, and a coaxial contact 31 for coupling with a signal pin is provided in the opening 28.
6, a power feeding contact hole 29 having a slot 34 is formed on both sides of the front surface, a power feeding socket contact is accommodated in the power feeding contact hole 29, and a power feeding pin contact 25 is coupled thereto.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a printed circuit board connector used to connect two boards, and more particularly to a connector that connects a power supply as well as a signal.

[0002]

[Prior Art]

 FIG. 4 shows a conventional connector of this type. A plurality of pin contacts 13 extending in the insertion / removal direction, that is, the front-rear direction are arranged in the housing 12 of the connector 11, and the connector 11 is attached so that the back surface of the housing 12 is in contact with the printed circuit board 14. The printed circuit board 14 is inserted through the pin contact 13.

On the other hand, the connector 15 to be coupled with the connector 11 has a housing 16 that can be inserted into and removed from the housing 12, and contact housing holes 17 extending in the front-rear direction are formed in the housing 16 in an array to form contacts. A socket contact 18 is accommodated in each accommodation hole 17. The arrangement of the socket contacts 18 is the same as the arrangement of the pin contacts 13. The rear end of the socket contact 18 is led out to the outside from the back surface of the housing 16 and serves as a terminal 19. The terminal 19 is connected to the printed board 21.

The printed circuit board 14 is, for example, a backboard provided along the back surface of the electronic device, and the printed circuit board 21 is, for example, movable vertically to the printed circuit board 14 and is a package board on which various electronic components are mounted. The connector 15 is attached to one end of the printed circuit board 21 so as to project therefrom and the insertion / removal direction thereof is parallel to the printed circuit board 21. By inserting and inserting the housing 16 into the housing 12, each pin contact 13 elastically engages and contacts the corresponding socket contact 18. Through the printed circuit board 14, not only signals are transmitted and received to and from the respective units on the printed circuit board 21, but also power is supplied. Therefore, a part of the pin contact 13 is used for the power supply 13S and the ground 13G.

[0005]

[Problems to be solved by the device]

 In conventional board connectors, pin contacts and socket contacts are used, and both signal transmission / reception and power supply are mixed, so noise superimposed on the power contact is easily induced in the signal contact. , There was a weakness in noise. Note that it is possible to use a coaxial contact instead of a socket contact to increase noise, but since the coaxial contact is thin, the current capacity is small. Therefore, use multiple coaxial contacts in parallel for one power supply. Therefore, the number of signal contacts decreases accordingly.

[0006]

[Means for Solving the Problems]

 According to this invention, the first connector is provided with the insertion portion to be fitted and inserted into the second connector, and the plurality of signal pins extending in the insertion / removal direction are arranged and accommodated in the insertion portion. A power supply pin contact extended in the insertion / removal direction is provided on one connector so as to project further forward than the front surface of the insertion portion. An opening is formed in the front surface of the second connector, into which the insertion portion is to be fitted, and a plurality of coaxial contacts extended in the insertion / removal direction are housed in the opening in the same arrangement as the signal pins. A hole for a power supply contact is formed on the front surface, and a power supply socket contact to be coupled with the power supply pin contact is housed in the power supply contact hole.

[0007]

【Example】

 1, 2 and 3 show an embodiment of this invention. In FIG. 1, the first connector 22 is attached to the first printed circuit board 14 with the back surface thereof in contact with each other in this example. In this example, the housing 23 of the first connector 22 has an insertion portion 23a that protrudes forward in the central portion, and the base portion protrudes from the left and right rear portions of the insertion portion 23a as protrusions 23b and 23c. Although not shown in FIG. 1, a plurality of signal pins 24 extending in the front-rear direction (insertion / removal direction) are arranged and accommodated in two rows inside the insertion portion 23a, and protrude from the back surface of the housing 23. Power supply pin contacts 25 extending in the front-rear direction are attached to the front surfaces of the protruding portions 23b and 23c of the base portion. The front end of the power supply pin contact 25 projects forward from the front surface of the insertion portion 23a. In this example, two power supply pin contacts 25 are provided on each of the protrusions 23b and 23c, respectively, on the extension of the array of the signal pins 24, and the plate surface is a plate-shaped body and the signal pins 24 are arrayed. It is parallel to the direction.

The second connector 26 is attached to the second printed circuit board 21, the housing 27 thereof has an elongated rectangular parallelepiped shape, and an elongated rectangular opening 28 into which the insertion portion 23a is to be fitted and inserted is formed in the center of the front surface. Holes 29 for feeding contacts into which the feeding pin contacts 25 are to be inserted are formed on both sides of the front surface. A plurality of coaxial contacts 31 extending in the front-rear direction are accommodated in the opening 28 in the same arrangement as the signal pins 24.

FIG. 2 shows a cross section of the signal pin 24 and the coaxial contact 31 in a state where the first connector 22 and the second connector 26 are coupled, and FIG. 3 shows a cross section of 25 parts of the power supply pin contact. The coaxial contact 31 is composed of a central conductor 31a and an outer conductor 31b, and a tip end portion of the central conductor 31a has a socket contact shape, and the signal pin 24 is elastically inserted and contacted there. The conductive tubular body 32 is held in the insertion portion 23a around the signal pin 24, the coaxial contact 31 is inserted into the tubular body 32, and the outer conductor 31b thereof is elastically contacted. In this example, the support plate 33 is in contact with the surface of the first printed circuit board 14 opposite to the first connector 22, and the signal pin 24 is inserted and fixed to the support plate 33. The signal pin 24 may be fixed directly to the first printed circuit board 14 or may be fixed to the housing 23 itself. In addition, in this example, the housing 23 closes the back surface of the insertion portion 23a with the back cover 23d.

As shown in FIG. 3, the power feeding socket contact 33 is accommodated in the power feeding contact hole 29 of the second connector 26, and when the first and second connectors 22 and 26 are coupled, the power feeding pin contact 25 is provided. The contact 33 is elastically inserted and contacted. In FIG. 3, the contact portion between the power supply pin contact 25 and the power supply socket contact 33 is displaced back and forth by the upper and lower contacts, so that the force at the time of insertion and coupling is small. The power supply pin contact 25 is fixed to the housing 23. The front end portion of the power feeding contact hole 29 is enlarged as the inner peripheral surface approaches the front surface, and is provided as an insertion opening 34 for facilitating insertion of the power feeding pin contact 25. The front portion of the power supply contact hole 29 for guiding to the socket contact 33 has a cross section slightly larger than the cross section of the power supply pin contact 25, and serves as a guide portion 29a for guiding the power supply pin contact 25.

Although the feed pin contacts 25 are provided on both sides of the first connector 26 in the above description, they may be provided on the central part. Moreover, the number can be made suitable.

[0012]

[Effect of the device]

 As described above, according to the present invention, since the signal transmission / reception is performed by the coaxial contact 31, it is unlikely to be affected by noise from the power feeding contact. In addition, since the coaxial contact is used, high speed signal transmission is possible. Moreover, instead of the coaxial contacts, separate simple pin contacts 25 and socket contacts 33 are used for power feeding, and a thicker one can be used compared to the coaxial contacts, and a relatively large current can be supplied even with one set of contacts. It is possible to do so, the number of feeding contacts is small, and the number of coaxial contacts between signals is not reduced.

Further, at the time of coupling, the feeding pin contact 25 is first inserted into the feeding contact hole 29 and positioned, then the insertion portion 23a is inserted into the opening 28, and then the signal pin 24 is coupled with the coaxial contact 31. During this time, the power feed pin contact 25 and the power feed contact hole 29 are guided to each other, so that the large number of signal pins 24 and the large number of coaxial contacts 31 can be coupled easily and reliably.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view of a signal pin portion in a coupled state of first and second connectors.

FIG. 3 is a cross-sectional view of a power supply pin contact portion in a coupled state of the first and second connectors.

FIG. 4 is a sectional view showing a conventional connector.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Takao Suzuki 1-21-6 Dogenzaka, Shibuya-ku, Tokyo Inside Japan Aviation Electronics Industry, Ltd. (72) Inventor Goro Haga 1-26-1 Dogenzaka, Shibuya-ku, Tokyo Within Japan Aviation Electronics Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A connector for connecting a first connector attached to a first printed circuit board and a second connector attached to a second printed circuit board, wherein the first connector is to be inserted into the second connector. A plurality of signal pins extending in the insertion / removal direction are arranged and housed in the insertion portion, and the first connector protrudes from the front surface of the insertion portion,
A power supply pin contact extending in the insertion / removal direction is provided, an opening into which the insertion portion is to be inserted is formed in the front surface of the second connector, and in the insertion / removal direction to be coupled to the signal pin, respectively. A plurality of extended coaxial contacts are arranged and housed in the same relationship as the signal pins, and a power feeding contact hole into which the power feeding pin contact is to be inserted is formed on the front surface of the second connector. A multi-core coaxial connector for a printed circuit board with a power supply contact, the power supply socket contact to which the power supply pin contact is to be coupled is provided.