JPH0533559U - Rack insertion type aluminum base wiring board - Google Patents

Abstract

(57) [Summary] [Structure] An insulating frame body 4 made of a plastic molding or the like is attached to two sides (usually upper and lower sides) of the aluminum base wiring board 1 that slide with the rack. [Effect] Since the part that slides with the rack is made of an insulator, shavings are generated when it is inserted into and removed from the rack. It won't wake up. Since the aluminum base is insulated from the rack, mounting components will not be damaged even if noise voltage such as lightning strikes into the rack.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an aluminum base wiring board which is used by being inserted into a rack for storing wiring boards.

[0002]

[Prior Art]

 Since the aluminum base wiring board uses an aluminum plate as the substrate, it has good heat dissipation and is used as a wiring board for mounting heat-generating components.

An aluminum-based wiring board may be inserted into a rack and used in the same manner as an ordinary glass epoxy-based wiring board. FIG. 3 shows an example thereof. Reference numeral 1 is an aluminum base wiring board, and 2 is a rack arranged above and below it. The rack 2 is made of metal, and guide grooves 3 are formed inside the rack 2 at appropriate intervals. The aluminum base wiring board 1 is housed in the rack 2 by inserting the upper and lower two sides into the guide grooves 3 and sliding it in the direction of arrow A. If necessary, it may be pulled out from the rack 2 by sliding it in the direction of arrow B.

[0004]

[Problems to be solved by the device]

 When the wiring board is inserted into or removed from the rack, the edges of the wiring board are slightly scraped by the rack, causing scraps. In the case of an aluminum-based wiring board, this scrap is a conductive aluminum powder, so if it adheres to the surface of the wiring board, it may cause a short-circuit accident.

When the aluminum base of the aluminum base wiring board is brought into direct contact with the rack, the aluminum base and the rack have the same potential. Therefore, when noise voltage due to lightning strike or static electricity enters the rack, the aluminum base wiring board It may damage the components mounted on.

[0006]

[Means for Solving the Problems]

 The present invention provides a rack-insertion type aluminum base wiring board which solves the above problems, and has a structure in which an insulating frame is attached to two sides of the aluminum base wiring board that slide with the rack. Alternatively, it is characterized by the provision of an insulating resin film.

[0007]

[Action]

 According to the above configuration, the part that slides with the rack becomes an insulator, so even if shavings are generated when inserting and removing from the rack and adhere to the surface of the aluminum base wiring board, the shavings are insulating powder. There is no risk of causing a short circuit accident. Also, since the aluminum base of the aluminum base wiring board is insulated from the rack, even if noise voltage enters the rack, the aluminum base does not have the same potential as it and there is no risk of damaging the mounted components.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention. In this rack-insertion type aluminum base wiring board, an insulating frame body 4 made of a plastic molding or the like is attached to two sides (usually the upper and lower sides) of the aluminum base wiring board 1 that slide with the rack. .. The frame body 4 can be attached by fastening the aluminum base wiring board 1 and the frame body 4 together with a fastening tool 5 such as a screw.

FIG. 2 shows another embodiment of the present invention. This rack-insertion type aluminum base wiring board is one in which an insulating resin coating 6 is provided on two sides of the aluminum base wiring board 1 that slide with the rack. The resin film 6 is formed, for example, by applying an epoxy paint and drying. Considering the heat dissipation from the edge of the aluminum base wiring board 1 through the rack, the thickness of the resin coating 6 is preferably thinner, and is preferably 100 μm or less.

[0010]

[Effect of the device]

 As described above, according to the present invention, since the portion that slides with the rack is made of an insulator, shavings are generated when the rack is inserted into and removed from the rack. Insulation powder prevents short circuit accidents. Also, since the aluminum base is insulated from the rack, even if a noise voltage such as a lightning strike enters the rack, the mounted components will not be damaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a rack-insertion type aluminum base wiring board according to the present invention.

FIG. 2 is a perspective view showing another embodiment of the rack-insertion type aluminum base wiring board according to the present invention.

FIG. 3 is a perspective view showing a state in which a conventional aluminum base wiring board is inserted into a rack. 1: Aluminum base wiring board 2: Rack 3: Guide groove 4: Insulating frame 5: Tightening tool 6: Insulating resin coating

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masafumi Tahara 2-6-1, Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A rack-insertion type aluminum base wiring board, wherein an insulating frame is attached to two sides of the aluminum base wiring board that slide with the rack. 2. A rack-insertion type aluminum base wiring board, characterized in that an insulating resin coating is provided on two sides of the aluminum base wiring board that slide with the rack.