JPH0219993Y2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention relates to a power supply structure that supplies power to a plurality of back panels arranged opposite each other, and particularly aims to reduce the voltage drop and the mounting space of the back panels. Regarding the power supply structure that can be used.

(2) Prior art and problems As shown in Fig. 1, this type of conventional power supply structure fixes a power bar 1 stacked in multiple layers to a housing, and sandwiches the power bar 1 between them. A plurality of back panels 2, 2' are arranged facing each other, and terminals 3, 3' are provided protruding from each layer of the power bar 1.
and power receiving terminals 4, 4' provided on one side edge of each back panel 2, 2' were connected by cables 5, 5' to supply power. However, in this case, power is supplied via the terminals 3, 3' of the power bar 1, the cables 5, 5', and the power receiving terminals 4, 4' of the back panels 2, 2', resulting in a large voltage drop along the way. There was a drawback. On the other hand, in order to reduce the voltage drop as much as possible, the thickness of each layer of the power bar 1 is increased to increase its cross-sectional area, but the thickness d of the power bar 1 as a whole increases, and as a result The distance l between the arranged back panels 2, 2' was increased. In addition, since the cables 5, 5' are bulged outward to connect them, the width w from the outer portion of the cables 5, 5' to the other end of the power bar 1 is increased. Since l and w are large in this way, back panel 2,
2' had the disadvantage that the mounting space becomes large.

(3) Purpose of the invention The present invention was made to solve the above problems, and its purpose is to provide a power supply structure that can reduce voltage drop and reduce the mounting space of the back panel. .

(4) Structure of the invention According to the invention, the above-mentioned object includes a back panel having a power receiving part on one edge thereof and disposed at an appropriate interval with the one edge thereof facing each other;
By providing a power supply structure characterized by comprising a power supply bar having a predetermined thickness and a U-shaped cross section, and having both end surfaces connected and fixed to the power receiving part of the back panel via a fixing device. It will be achieved.

(5) Embodiments of the invention Hereinafter, embodiments of the invention will be described in detail based on the attached drawings.

FIG. 2 is an explanatory cross-sectional view showing the power supply structure according to the present invention. The back panels 6, 6' have a plurality of printed boards (not shown) mounted substantially perpendicularly on the board surface to which power is supplied and signals are connected. , 7'.
A power supply pattern is formed on the path from the power receiving parts 7, 7' to the mounting position of each printed board.
A through hole is provided in each of the power receiving sections 7, 7'.

The back panels 6, 6' are arranged with their one side edges facing each other at an appropriate distance l', and the power receiving parts 7, 7' are connected by a power bar 8. Here, the power supply bar 8 is formed into an elongated member made of metal such as copper or aluminum and has a predetermined thickness and has a substantially U-shaped cross section. Further, screw holes 9, 9' are bored in both end surfaces of the U-shaped cross section of this power bar 8.
9' to the power receiving parts 7, 7' of the back panels 6, 6'.
By aligning the screws 10 and 10' with the through holes of the back panels 6 and 6', the power supply bar 8 is attached to the
The connection is fixed. Therefore, power can be simultaneously supplied to the back panels 6, 6' by the power bar 8, and the back panels 6, 6' disposed facing each other can be mounted and fixed.

In addition, in FIG. 2, the power supply bar 8 is shown as three pieces and each one is separated from each other, but the present invention is not limited to this. It may be laminated. Further, depending on the type of supply voltage, the number of power supply bars 8 is not limited to three, but may be two or less or four or more. Also, the back panel 6 of the power bar 8,
The connection and fixation to 6' is not limited to the screw 10, but may be any other suitable fixing means. In addition, power bar 8
back panels 6, which are arranged opposite to each other on both sides;
A plurality of sets of power supply bars 6' can be connected along the longitudinal direction of the power supply bar 8.

(6) Effects of the invention Since the invention is configured as described above, the power bar 8 can be directly connected to the power receiving parts 7, 7' of the back panels 6, 6'. Therefore, unlike the conventional example shown in FIG. 1, there is no need to go through the terminals 3, 3', cables 5, 5', and power receiving terminals 4, 4', so it is possible to reduce the voltage drop along the way. can. From this, the thickness of the power supply bar 8 can also be reduced. Further, since the power bar 8 is formed to have a substantially U-shaped cross section and its both end surfaces are connected and fixed to the power receiving portions 7, 7' at the side ends of the back panels 6, 6', one side end of the back panels 6, 6' Nothing is interposed between the edges, and the distance l' can be made extremely small. Furthermore, since conventional cables 5, 5' are not required and the thickness of the power bar 8 can be reduced, the width w' from the outer surface of the back panels 6, 6' to the other side of the power bar 8 can be reduced. be able to. Since l' and w' can be made small in this way, the mounting space for the back panels 6, 6' can be made small. Furthermore, since power is simultaneously supplied from the same power bar 8 to the two back panels 6, 6' arranged opposite to each other, the two back panels 6, 6'
There is no difference in supply voltage between 6'. Also,
The power supply bar 8 can also serve as a mounting and fixing member for the back panels 6, 6', thereby reducing the number of parts and reducing costs.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional power supply structure, and FIG. 2 is a cross-sectional explanatory diagram showing a power supply structure according to the present invention. 6, 6'... Back panel, 7, 7'... Power receiving section, 8... Power bar, 9, 9'... Screw hole, 10
……Screw.

Claims (1)

[Claims for Utility Model Registration] A plurality of back panels 6, 6' having power receiving portions 7, 7' on one side edge and arranged at appropriate intervals with the side edges facing each other; It is formed with a predetermined thickness and has a substantially U-shaped cross section, and its both end surfaces are connected to the power receiving portions 7 and 7 of the back panels 6 and 6'.
Power bar 8 is connected and fixed to 7' via a fixing device.
A power supply structure characterized by comprising: and.