JPH0494068A - Terminal board having electric power source terminal and socket having electric power source contactor - Google Patents

Abstract

PURPOSE:To obtain a terminal board having a small shape and able to supply large electric current by making the cross-section shape of the terminal part of the terminal board an ellipse shape, and making the pitch of arranging the terminal board equal to the pitch of a standard lattice of a printed board. CONSTITUTION:An electric power source terminal 28 of a terminal board and an electric power source contactor 40 of a socket respectively have an ellipse cross-section shape of a terminal to be inserted into a through hole 13 with an ellipse cross-section of a printed board 1 and the ellipse has the same width as the outer diameter of a signal terminal 27 and the direction of the major axis of the cross-section ellipse terminal part is toward the direction rectangular to the row of the terminals. Consequently, desired large electric current is able to be supplied by making the major axis of the cross-section ellipse terminal part sufficiently large and also even if the arrangement pitch of the electric power terminal is made equal to the pitch of a standard lattice of a printed board, insulation between neighboring through holes is retained.

Description

[Detailed Description of the Invention] [Summary] A power supply that is small and capable of supplying a large current, regarding a terminal board equipped with a power terminal mounted on a printed board and a socket equipped with a power contact into which the power terminal can be inserted and removed freely. The purpose of this terminal board is to provide a terminal board equipped with a terminal and a socket equipped with a power contact into which a power terminal can be freely inserted and removed, and which is mounted on a printed circuit board, the terminal board having a width equal to the outer diameter of the signal terminal. Power supply terminals having terminal portions with an oval cross section are arranged on an insulating block, and the terminal portions with an oval cross section are inserted and soldered into through holes with an elongated cross section provided in the printed board. [Field of Application] The present invention relates to a terminal board equipped with a power terminal mounted on a printed board, and a socket equipped with a power contact into which the power terminal is removably inserted.

BACKGROUND OF THE INVENTION As circuit components such as semiconductor components are mounted on printed boards at a high density, it is required to supply a large amount of power supply current to the printed boards.

On the other hand, power is supplied to the printed board through terminals on a terminal board mounted on the printed board, or by plugging a cable connector into a socket mounted on the printed board.

[Conventional technology]

FIG. 4 is a perspective view of a conventional terminal board having power terminals.

In FIG. 4, 5 indicates that the signal terminal 7 and the power supply terminal 8 are connected to each other.
This is a terminal board arranged in a line on an insulating block 6.

The signal terminals 7 are bottle-shaped and arranged through the insulating block 6, and are configured so that the terminal portions thereof are inserted into the through holes 2 of the printed board 1 and soldered.

The power supply terminal 8 is shaped like a pin and has a diameter larger than that of the signal terminal 7, so that it can supply a large current.

As mentioned above, since the diameter of the terminal part of the power supply terminal 8 is large,
The inner diameter of the power supply through hole 3 into which the terminal portion of the power supply terminal 8 is inserted and soldered is larger than the inner diameter of the through hole 2 into which the signal terminal 7 is inserted.

By increasing the inner diameter of the power supply through-holes 3, when the power supply through-holes 3 are arranged at the standard pitch of the grid, the lands will be close to each other, and there will be a gap between adjacent power supply through-holes or signal through-holes. Insulation is not guaranteed.

Therefore, the distances between the through holes and the power supply through holes and between the power supply through holes should be sufficiently large.

That is, the arrangement pitch of the signal terminals 7 is 2.54M, and the arrangement pitch of the power supply terminals 8 is (2×2.54).

Note that the distance between the signal terminal 7 and the power supply terminal 8 is also (2X
2.54) Intestines.

The terminal board 5 is mounted on the printed circuit board 1 by inserting the terminal portions of the signal terminal 7 and the power supply terminal 8 into the corresponding through holes 2 or power supply through holes 3 and soldering the back surface.

Although not shown, a power supply line or a signal line is wrapped or soldered to the head of each terminal.

[Problem to be solved by the invention]

As described above, the diameter of the terminal portion of the conventional power supply terminal is made larger than the diameter of the other signal terminals, so that a large current can be supplied.

For this reason, the arrangement pitch of the power supply terminals is twice the standard grid pitch of the printed circuit board, resulting in a problem that the terminal board becomes large.

The present invention was created in view of these points, and an object of the present invention is to provide a terminal board that is small and equipped with a power terminal that can supply a large current.

Another object of the present invention is to provide a socket including a power contact into which the power terminal is removably inserted.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a terminal board mounted on a printed circuit board, as illustrated in FIG.
A terminal board is provided in which power terminals 28 having ^ are arranged on the insulating block 26.

The terminal portion 28A having an oval cross section is inserted and soldered into a through hole 13 having an elongated cross section provided in the printed board 1.

Further, as illustrated in FIG. 2, it is a socket into which a connector 50 having a power terminal 53 having an oval cross section is plugged in by soldering on the printed circuit board 1 in a freely insertable/removable manner from the bottom surface of the housing 31. A terminal portion 41 with an oval cross section that protrudes and is inserted and soldered into a through hole 13 with an elongated cross section of the printed board l, and a recess 43 with an elongated cross section that is housed in the housing 31 and has an open upper part are provided with several stripes on the inner wall. A power contact 40 consisting of a contact portion 42 having an elastic protrusion 44 is disposed in the housing 31.

[Effect]

In both the power terminal 28 of the terminal board and the power contact 40 of the socket, the cross section of the terminal portion inserted into the elongated cross-section through hole 13 of the printed board 1 has a width equal to the outer diameter of the signal terminal 27. It is circular and has an oval cross-sectional terminal portion whose major diameter direction is oriented in a direction perpendicular to the terminal row.

Therefore, by making the long axis of the terminal part oval in cross section sufficiently thick, the desired large current can be supplied, and even if the arrangement pitch of the power terminals is equal to the standard grid pitch of the printed board, Insulation between adjacent through holes is guaranteed.

That is, it is possible to prevent the terminal board or socket from increasing in size.

On the other hand, the power contact 40 of the socket has a contact portion 42 having several elastic protrusions 44 on the inner wall of a recess 43 with an open top and an elongated cross section.

Therefore, the power terminal 53 of the connector 50 is connected to the contact portion 42.
When inserted, the elastic protrusion 44 is elastically deformed and comes into close contact with the power supply terminal 53 due to its elasticity.

Therefore, the power terminal 53 and the power contact 40 are electrically connected.

〔Example〕

The present invention will be specifically described below with reference to the drawings. Note that the same reference numerals indicate the same objects throughout the figures.

FIG. 1 is a perspective view of an embodiment of the first invention, FIG. 2 is a sectional view of an embodiment of the second invention, and FIG. 3 is a perspective view of a power contact.

In FIG. 1, 20 indicates a signal terminal 27 and a power terminal 28.
are terminal boards arranged in a line on the insulating block 26 at the standard grid pitch of the printed circuit board 1, that is, the pitch of 254 pitches.

The signal terminals 27 are bottle-shaped with a diameter of about 0.8 m and are arranged through the insulating block 26, and are configured so that the terminal portions thereof are inserted into the through holes 2 of the printed board 1 and soldered.

The inner diameter of the through hole 2 is about 0.91 mm, and the outer diameter of the land of the through hole 2 is 1.7 mm.

The power terminals 28 are arranged to pass through the insulating block 26,
An oval terminal section 28 with a width equal to the outer diameter of the signal terminal 27
A protrudes from the bottom surface of the insulating block 26.

The width of the terminal portion 28A having an oval cross-section is approximately 0.8 mm, and its major axis is, for example, 1.6 mm.

Note that the power supply terminal 28 is attached to the insulating block 26 so that the long diameter direction of the terminal portion 28A having an oval cross section is oriented in a direction perpendicular to the terminal row.

On the other hand, a through hole 13 having an elongated cross section is provided in the printed circuit board 1 in order to insert and solder the terminal portion 28A of the power supply terminal 28 having an elongated cross section.

The short diameter of the through hole 13 with an elongated cross section is 0.9 ws
The length of the hole is, for example, 1.8 mm.

The terminal board 20 is mounted on the printed circuit board 1 by inserting the terminal portions of the signal terminal 27 and the power supply terminal 28 into the corresponding through holes 2 or the elongated cross-sectional through holes 13, and soldering the back surface.

Further, a power supply line or a signal line (not shown) is configured to be wrapped or soldered to the head of each terminal.

In the present invention, as described above, since the long axis of the terminal portion 28A having an oval cross section is sufficiently large, a desired large current (for example, approximately twice the current that can be passed through the signal terminal) can be supplied.

Further, since the arrangement pitch of the power supply terminals 28 is equal to the standard grid pitch of the printed board, the terminal board 20 does not become large.

Although the illustrated terminal board has signal terminals and power terminals arranged, it goes without saying that the terminal board according to the present invention can be applied to a structure in which only the power terminals are arranged in a desired number. .

In FIG. 2, 30 indicates a connector 5 attached to a housing 31.
0 signal terminal 52 and a power contact 4 for the power terminal 53 having an oval cross-section terminal portion of the connector 50.
0 are sockets arranged at the standard grid pitch of the printed board 1.

The contactor 35 includes a bottle-shaped terminal portion 36 (about 0.8 mm in diameter) protruding from the bottom surface of the housing 31;
The contact piece 37 is formed on the upper part of the connector 50 and contacts the signal terminal 52 of the connector 50 in a sandwiching manner.
7 is housed in a recessed portion of the housing 31 that is open at the top.

The terminal portion 36 of the contactor 35 is inserted into the through hole 2 of the printed board 1 and soldered.

The power contact 40 protrudes from the bottom surface of the housing 31,
A terminal portion 41 with an oval cross section is inserted and soldered into a through hole 13 with an elongated cross section of the printed board 1, and several strips are formed on the inner wall of a recess 43 with an elongated cross section that is housed in the housing 31 and has an open top. and a contact portion 42 having an elastic protrusion 44.

The width of the terminal portion 41 having an oval cross section is approximately 0.8 mm, and its major axis is, for example, 1°6M.

In the connector 50 attached to the end of the cable 55, a signal terminal 52 and a power terminal 53 having an oval terminal section are arranged and protrude from the lower surface of the housing 51.

In addition, the width of the terminal part of the power supply terminal 53 is 0.8-1, and the major axis is 1.
．． In the case of about 6 mm, the width of the elongated hole-shaped concave section 43 of the power contact 40 of the socket 30 is about 0.85 m, and its major axis is, for example, 1.7 m.

For example, as shown in FIG. 3(a), there is a bottomed cylindrical contact portion 42A having a circular hole 43, and a small diameter cylindrical terminal portion 41A.
The raw material 40A in which the A power contact 40 is formed by integrally connecting a contact portion 42 having a recess 43 with an elongated cross section and a terminal portion 41 having an oval cross section.

Returning to FIG. 2, the socket 30 is constructed by inserting the terminal portion 36 of the contact 35 into the through hole 2, the terminal portion 41 of the power contact 40 with an oval cross section into the through hole 13, and soldering the back side. By dipping, it is mounted on the printed board 1.

Further, by aligning the signal terminal 52 of the connector 50 with the contact 35 and the power terminal 53 with the power contact 40 and pushing them into the socket 30, each terminal is electrically connected to the corresponding contact.

The socket 30 as described above can supply a desired large current by sufficiently increasing the major axis of the terminal portion of the oval cross-section of the power contact 40. Furthermore, since the arrangement pitch of the power supply terminals is equal to the reference grid pitch of the printed board, it is compact.

〔Effect of the invention〕

As explained above, the terminal board of the present invention has a terminal section of the power terminals having an oval cross-section, and the arrangement pitch of the power terminals is equal to the standard grid pitch of the printed board, so that the terminal board is small in shape. Moreover, it can also supply large current.
It has excellent practical effects.

Further, in the socket of the present invention, the shape of the terminal portion of the power contact to be soldered to the through hole is oval in cross section, and the arrangement pitch of the power contact is equal to the standard grid pitch of the printed board, and furthermore, the power contact The contact part is designed so that the terminal with an oval cross section of the connector can be inserted and removed freely.
It has an excellent practical effect in that it is small in size and can supply a large current transmitted from the connector to the printed board.

[Brief explanation of drawings]

1 is a perspective view of an embodiment of the first invention, FIG. 2 is a sectional view of an embodiment of the second invention, FIGS. 3(a) and 3(b) are perspective views of a power contact, and FIG. FIG. 4 is a perspective view of a conventional example. In the figure, 1 is a printed board, 2 is a through hole, 3 is a power supply through hole, 5, 20 is a terminal board, 6.26 is an insulation block, 7, 27.52 is a signal terminal, 8.28.5
3 is a power terminal, 30 is a socket, 31.51 is a housing, 40 is a power contact, 42 is a contact part,
43 is a recess with an elongated cross section; 44 is an elastic projection;
50 is a connector, 13 is a through hole with an elongated cross section, and 28A and 41 are terminal portions with an elongated cross section. Packed pigeon j board 5Ω λf 9 Atsushi 2 f, August 0 hit 15. Bamboo 110 diagram M2 diagram

Claims (1)

[Scope of Claims] [1] A terminal board mounted on a printed board, which has an oval terminal section (28A) with a width equal to the outer diameter of the signal terminal (27).
) is connected to the insulating block (26).
The terminal portions (28A) having an oval cross section are arranged in the through holes (1) having an elongated cross section provided in the printed board (1).
3) A terminal board equipped with a power supply terminal, characterized in that it is inserted and soldered. [2] A connector (50) is mounted on the printed board (1) by soldering and has a power terminal (53) with an oval cross section,
It is a plug-in socket that can be freely inserted and removed, and has an oval-shaped terminal portion (41) that protrudes from the bottom of the housing (31) and is inserted and soldered into a through-hole (13) that has an elongated cross-section of the printed circuit board (1). ), and a contact portion (42) having several elastic protrusions (44) on the inner wall of a recess (43) which is housed in the housing (31) and has an open top and has an elongated cross section.
), and a power contact (40) consisting of the housing (
31) A socket equipped with a power contact.