JP2018133929A - Electric and electronic equipment storage box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a structure that can secure a grounding path of a protective plate without scraping a coating film of the protective plate with a knurled screw.SOLUTION: An electric and electronic equipment storage box that includes a device mounting portion 21 on which an electrical device is mounted, a protective plate 22 that is installed so as to cover a conductive portion of the electrical device, a protective plate support member 23 that is disposed on the device mounting portion 21 for supporting the protective plate 22, and a protective plate fixing member 24 for fixing the protective plate 22 and the protective plate support member 23, and a conductive metal fitting 3 electrically connected to a non-coated portion of the protective plate 22 is arranged between the protective plate support member 23 and the protective plate fixing member 24.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electric / electronic equipment storage box.

  As described in Patent Document 1, an electric / electronic equipment storage box having a protective plate called an inner door or the like is known. The protective plate is painted, but the painted portion is non-conductive. Therefore, a toothed washer provided with protruding teeth is used between the knurled screw and the protective plate. Such a toothed washer is intended to ensure that the protective plate is grounded via a knurled screw by scraping the coating film when screwed together.

JP 2006-49400 A

  However, the means for scraping the coating film with the toothed washer cannot secure the earth path of the protective plate if the shaving depth is shallower than the thickness of the coating film. Even if continuity can be ensured, the toothed washer is hidden between the knurled screw and the protective plate, so that the non-painted part is not exposed on the protective plate and the ground of the protective plate is secured. It was difficult to inspect. For this reason, this inventor decided to look for securing the earth path | route of a protection board by a new means.

  The inventor of the present invention has been made with such circumstances, and an object of the present invention is to provide a structure that can secure the ground path of the protective plate without removing the coating film of the protective plate with a knurled screw. .

  In order to solve the above problems, a device mounting portion for mounting an electrical device, a protective plate installed so as to cover a conductive portion of the electrical device, and a protective plate disposed on the device mounting portion for supporting the protective plate An electrical and electronic equipment storage box including a support member and a protection plate fixing member for fixing the protection plate and the protection plate support member, wherein the conductive metal plate electrically connected to the non-painted portion of the protection plate is a protection plate The electric and electronic equipment storage box is disposed between the support member and the protective plate fixing member.

  Moreover, it is preferable to set it as the structure by which the conduction metal fitting is arrange | positioned between the protective plate and the protective plate fixing member.

  Further, it is preferable that a part of the conduction screw for fixing the conduction metal fitting to the protection plate is exposed on the surface of the protection plate.

  In the present invention, it is possible to provide a structure that can secure the ground path of the protective plate without removing the coating film of the protective plate with a knurled screw.

It is a perspective view of the box for electrical and electronic equipment storage. It is a perspective view of an internal unit. It is a perspective view around the conductive metal fixture fixed to the surface of the protective plate. However, equipment is omitted. It is a side view around the conductive metal fixture fixed to the surface of the protective plate. However, equipment is omitted. It is a disassembled perspective view around the conductive metal fixture fixed to the surface of the protective plate. However, equipment is omitted. It is a disassembled perspective view around the conductive metal fixture fixed to the back surface of the protective plate. However, equipment is omitted. It is a side view around the conductive metal fixture fixed to the back surface of the protective plate. However, equipment is omitted. It is the perspective view of the internal unit which showed the state which the protection board which can be rotated opened. It is the perspective view of the internal unit which showed the state which the protective plate which can be rotated closed.

  The form for implementing this invention is shown below. The electrical / electronic equipment storage box 1 of the present embodiment supports the equipment mounting portion 21 on which the electrical equipment 13 is mounted, the protection plate 22 installed so as to cover the conductive portion of the electrical equipment 13, and the protection plate 22. Are provided with a protection plate support member 23 disposed on the device mounting portion 21, and a protection plate fixing member 24 for fixing the protection plate 22 and the protection plate support member 23. Further, the conductive metal 3 electrically connected to the non-painted portion of the protection plate 22 is disposed between the protection plate support member 23 and the head 24 a of the protection plate fixing member 24. Therefore, the ground path of the protective plate 22 can be secured without removing the coating film of the protective plate 22 with a knurled screw. In addition, since the coating film of the protective plate 22 is not cut by the operation of tightening the knurled screw by hand, it is not necessary to tighten the knurled screw with a strong force.

  Here, the electric and electronic equipment storage box 1 of the present embodiment will be described. As shown in FIG. 1, the electric / electronic device storage box 1 includes a housing 11 having an opening, and a door 12 that can cover the opening and forms a part of the outer diameter. An internal unit 2 as shown in FIG. 2 is attached inside the housing 11. The internal unit 2 includes a device mounting unit 21 on which an electrical device 13 such as a branch breaker is mounted, a protection plate 22 installed so as to cover a conductive portion of the electrical device 13, and a device mounted to support the protection plate 22. And a protective plate support member 23 disposed on the portion 21. The protective plate 22 is movable, and when the protective plate 22 maintains the state where the conductive plate of the electrical device 13 is covered, the protective plate 22 and the protective plate support member 23 are connected using the protective plate fixing member 24. Fix it. In addition, a ground terminal portion that ensures electrical continuity with the housing 11 is provided inside the housing 11, and the ground path of the housing 11 can be established by grounding an electric wire or the like connected to the ground terminal portion. Secured.

  In the example shown in FIGS. 3 to 5, the conducting metal fitting 3 is disposed between the protection plate 22 and the head 24 a of the protection plate fixing member 24. More specifically, the conducting metal fitting 3 that is a non-painted product of plating is fixed to the upper surface of the protective plate 22. The conducting metal fitting 3 of the present embodiment is a substantially flat plate-like member provided with a hole 32 into which the conducting screw 4 can be inserted and a hole 31 into which the neck 24b of the protective plate fixing member 24 can be inserted. The conductive metal 3 is fixed so as to be electrically connected to a non-painted portion on the protective plate 22, so that the conductive metal 3 and the protective plate 22 are electrically connected.

  A non-painted part is a part on the protective plate 22 that is not partially painted, or a part where a screw hole 92 is formed in the coated protective plate 22 and the paint is peeled off. When the non-painted portion is a portion that is not partially painted on the protective plate 22, direct conduction can be secured by fixing the conductive metal 3 and the non-painted portion of the protective plate 22 so as to contact each other. In addition, when a non-painted portion is provided by peeling the coating by performing a process of forming the screw hole 92 in the protective plate 22 after coating, the conductive screw 4 is used and the conductive metal fitting 3 is fixed by the screw hole 92. In this case, the conduction between the conduction fitting 3 and the protective plate 22 can be secured via the conduction screw 4.

  The conducting metal fitting 3 is provided with a hole 31 through which a knurled screw as the protective plate fixing member 24 passes. The knurled screw passes through the hole 31 of the conduction fitting 3 and the hole 91 of the protection plate 22 and is fixed to the protection plate support fitting which is the conductive protection plate support member 23. The knurled screw and the conductive metal fitting 3 are configured to contact each other. For example, when the lower surface of the screw head 24 a of the knurled screw is made of an unpainted metal, direct conduction can be secured by tightening the knurled screw and bringing it into contact with the conductive fitting 3. Further, even when the lower surface of the knurled screw head 24a is not made of non-painted metal, a non-painted metal fitting such as a washer is provided on the screw neck 24b below the screw head 24a so that the washer is interposed. Therefore, continuity can be ensured.

  The conduction between the metal substrate 21a, which is a component of the device mounting portion 21, and the protection plate support fitting is secured by fixing the protection plate support fitting to the screw hole formed in the substrate 21a with a conduction screw (not shown). The The continuity between the knurled screw and the protective plate support fitting is ensured by tightening the knurled screw on the screw receiving portion of the protective plate support fitting. Therefore, electrical connection between the substrate 21a and the protection plate 22 is ensured through a path of “substrate 21a → protection plate support fitting → knurl screw → (washer) → conduction fitting 3 → (conduction screw 4) → protection plate 22”. On the other hand, continuity between the substrate 21a and the housing 11 is ensured by a method of peeling the coating when fixing the housing 11 to the substrate 21a or a method of connecting the substrate 21a and the ground terminal portion with an electric wire or the like. . Therefore, the protective plate 22 can have a structure capable of securing a ground path by providing the conductive metal fitting 3.

  The conducting metal fitting 3 may have any shape as long as conduction between the knurled screw and the conducting screw 4 is ensured, and there may be a part to be painted. When the conductive metal 3 is unpainted on the entire surface, a non-painted portion is exposed on the protective plate 22, so that the conduction between the protective plate 22 and the ground terminal is confirmed using the conductive metal 3. Thus, it is possible to inspect whether or not the protective plate 22 is grounded. When a part of the conductive metal 3 is painted and the non-painted portion is not exposed on the protective plate 22, the continuity can be inspected by using the non-painted conductive screw 4 on the head. If the conductive metal fitting 3 is arranged between the protective plate 22 and the head 24a of the protective plate fixing member 24 as in this example, the conductive metal fitting 3 of the protective plate 22 is exposed on the surface side. Therefore, it is possible to easily confirm whether or not electrical connection between the substrate 21a (or a mounting rail 21b described later) and the protection plate 22 is ensured. A convex portion is provided between the hole 31 and the hole 32 of the conductive fitting 3, and the convex portion is fitted into the hole provided between the hole 91 and the screw hole 92 of the protective plate 22, thereby providing the conductive fitting 3. Rotation can be prevented when attaching to the screw hole 92.

  6 and 7 show an example in which the conductive metal fitting 3 is disposed between the protective plate 22 and the protective plate supporting metal fitting. In the case of this example, the conductive metal 3 is fixed to the lower surface of the protective plate 22, but the conductive metal 3 and the protective plate 22 are fixed by being fixed so as to be electrically connected to a non-painted portion on the protective plate 22. Continuity is ensured. Further, by fixing the conductive screw 4 so that a part of the conductive screw 4 is exposed on the surface of the protection plate 22, the conductive screw 4 can be used for the inspection of conduction.

  The conduction between the knurled screw and the conductive fitting 3 is performed by inserting the knurled screw into the protective plate 22 so that the knurled screw does not fall off the protective plate 22, and then attaching the locking component 5 to the neck 24b of the knurled screw, the protective plate 22, By disposing the conducting metal fitting 3 between them, electrical conduction between the knurled screw and the conducting metal fitting 3 can be ensured via the locking part 5. As in this embodiment, the conductive metal fitting 3 is disposed between the protective plate support member 23 and the protective plate 22, and a part of the conductive screw 4 that fixes the conductive metal fitting 3 to the protective plate 22 is the surface of the protective plate 22. By using the structure exposed to, conduction confirmation can be easily performed by the conduction screw 4. Moreover, since the conductive metal fitting 3 is not exposed, it can be made excellent in aesthetic appearance.

  1 to 7, the electrical and electronic equipment storage box 1 provided with the protective plate 22 that is removed at the time of inspection has been described. However, as can be understood from FIGS. 8 and 9, the protective plate 22 is It is good also as the box 1 for electrical and electronic equipment storage which can be rotated. In this case, a protection plate support member 23 that rotatably supports the protection plate 22 is fixed to an attachment rail 21 b that is a component of the device mounting portion 21. The mounting rail 21b is made of metal. A screw member that is a protective plate fixing member 24 is used for fixing the protective plate 22 and the protective plate support member 23. A washer may be used when attaching the screw member. Further, the protective plate 22 may or may not be fixed with the conduction screw 4. In this example, the conductive metal fitting is fixed to the front surface side of the protective plate 22, and “attachment rail 21 b → protective plate support metal fitting → screw member → (washer) → conductive metal fitting 3 → (conductive screw 4) → protective plate 22”. Thus, the electrical connection between the mounting rail 21b and the protective plate 22 is secured. Furthermore, it can be set as the structure which can ensure the earthing | grounding path | route of the protection board 22 through the attachment rail 21b by which conduction | electrical_connection with the housing | casing 11 was ensured.

  As mentioned above, although it demonstrated centering on some embodiment, this invention is not limited to the said embodiment, It can be set as various aspects. For example, an unpainted metal fitting such as a washer may be provided between the protective plate and the protective plate support metal fitting in addition to the locking part.

DESCRIPTION OF SYMBOLS 1 Electric and electronic equipment storage box 3 Conductive metal fitting 4 Conductive screw 13 Electrical equipment 21 Equipment mounting part 22 Protection plate 23 Protection plate support member 24 Protection plate fixing member 24a

Claims (3)

  A device mounting portion for mounting an electrical device, a protective plate installed so as to cover a conductive portion of the electrical device, a protective plate support member disposed on the device mounting portion for supporting the protective plate, and a protective plate; An electrical and electronic equipment storage box having a protection plate fixing member for fixing a protection plate support member, wherein the conductive metal plate electrically connected to the non-painted portion of the protection plate includes the protection plate support member and the protection plate fixing member. Electric and electronic equipment storage box placed between the two.   The electrical / electronic equipment storage box according to claim 1, wherein the conductive metal fitting is disposed between the protective plate and the protective plate fixing member.   The electric and electronic equipment storage box according to claim 1 or 2, wherein a part of a conduction screw for fixing the conduction metal fitting to the protection plate is exposed on a surface of the protection plate.

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