JP2018133469A - Electric and electronic device storage box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide 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 device storage box includes a device mounting portion 21 on which an electrical device is mounted, a protective plate 22 installed so as to cover a conductive portion of an electric device, a protective plate support member 23 disposed on the device mounting portion 21 that supports the protective plate 22, and a protective plate fixing member 24 that fixes the protective plate 22 and the protective plate supporting member 23, and a conductive metal fitting 3 electrically connected to a non-coated portion provided on at least one of the protective plate supporting member 23 and the protective plate 22 is attached to the other.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. 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 electric and electronic equipment storage box comprising a support member and a protection plate fixing member for fixing the protection plate and the protection plate support member, the non-painting portion provided on at least one of the protection plate support member and the protection plate An electrical and electronic equipment storage box having a conductive fitting electrically connected to the other is attached to the other.

  Moreover, it is preferable to set it as the structure attached to the protection board so that the conduction metal fitting which contacts the non-coating part of a support member may protrude in the protection board support member side in the back side of a protection board.

  Moreover, it is preferable to set it as the structure by which the conduction metal fitting which contacts the non-coating part provided in the back side of the protection board was attached to the protection board support member. Furthermore, it is preferable that a conduction metal fitting for locking with a locking portion provided on the protective plate is attached to the protective plate support member.

  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 a protection plate support member. However, equipment is omitted. It is a disassembled perspective view around a protective plate support member. However, equipment is omitted. It is the perspective view around the protection board support member which showed the connection state of conduction metal fittings. However, equipment is omitted. It is a side view around a protection plate support member. However, equipment is omitted. It is the side view which showed the state which attached the conduction metal fitting to the protection board support member. However, the device is omitted, and the protection plate and the protection plate support member are separated. It is the side view which showed the state which attached the conduction metal fitting to the protection board support member. However, the equipment is omitted, and the protection plate and the protection plate support member are connected. It is the side view which showed the state which attached the conduction metal fitting to the protective plate. However, the device is omitted, and the protection plate and the protection plate support member are separated. It is the side view which showed the state which attached the conduction metal fitting to the protective plate. However, the equipment is omitted, and the protection plate and the protection plate support member are connected. It is a perspective view around a locking part. However, equipment is omitted.

  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. In addition, a conductive fitting 3 that is electrically connected to a non-coating portion provided on at least one of the protective plate support member 23 and the protective plate 22 is attached to the other. 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. Furthermore, electrical connection between the device mounting portion 21 and the protection plate 22 can be ensured without using a knurled screw.

  A non-painted part is a part that is not partially painted or a part that has undergone a process of forming a screw hole 92 after painting, and the paint is peeled off. When the non-painted part is a part that is not partially painted, direct conduction can be ensured by fixing the conductive metal fitting 3 and the non-painted part in contact with each other. Further, when a non-painted portion is provided by removing the coating by performing a process of forming the screw hole 92 after painting, the conduction screw 4 can be obtained by using the conduction screw 4 and fixing the conduction metal fitting 3 by the screw hole 92. Conductivity can be ensured through this.

  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. As understood from FIGS. 2 and 3, the internal unit 2 is installed so as to cover a device mounting portion 21 on which the electrical device 13 such as a branch breaker is mounted and a conductive portion of the electrical device 13. A protection plate 22 and a protection plate support member 23 disposed on the device mounting portion 21 to support the protection plate 22 are provided. The protection plate support member 23 of the present example is a protection plate support bracket made of a bracket. 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 this example, the protective plate fixing member 24 employs a knurled screw. As understood from FIGS. 3 and 4, the protection plate fixing member 24 is screwed into the protection plate support member 23 in a state of being inserted into the hole 91 of the protection plate 22. In addition, although the apparatus mounting part 21 of this embodiment is a metal attachment rail, it is also possible to make the board into the apparatus mounting part 21. 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 6, the conductive metal 31 that is electrically connected to the non-painted portion of the protective plate support member 23 is attached to the protective plate 22 so as to protrude to the back side of the protective plate 22. The conducting metal fitting 31 in this example is inserted through an insertion hole 81 provided in the protection plate 22 and is fixed so as to be located over the front surface side and the back surface side of the protection plate 22. In this example, when maintaining the state in which the conducting metal fitting 31 protrudes toward the protective plate support member 23, it is fixed on the front surface side of the protective plate 22, but the fixing position may be on the front surface or the back surface of the protective plate 22. Absent.

  The conductive metal fitting 31 protruding toward the protective plate support member 23 on the back side of the protective plate 22 is electrically connected to the non-painted portion of the protective plate support member 23 when the protective plate 22 is attached to the protective plate support member 23. Configure as follows. The contact position for electrical connection may be any location such as the upper surface or the side surface of the protection plate support member 23. For example, when the protection plate support member 23 is configured by connecting members, the conductive fitting 31 can be brought into contact with a connection component such as a screw for connecting them.

  In this example, the conducting metal fitting 31 attached to the protective plate 22 is configured to contact the conducting metal fitting 32 attached to the protective plate support member 23. The conductive metal fitting 32 attached to the protective plate support member 23 is fixed so as to protrude toward the protective plate 22, and is attached to the protective plate 22 in a state where the protective plate 22 is fixed to the protective plate support member 23. It is configured to be in contact with the conducting metal fitting 31 and ensure conduction. In addition, by exposing the conductive metal 31 or the conductive screw 4 for fixing the conductive metal 31 to the protective plate 22 on the surface of the protective plate 22, the conduction between the protective plate 22 and the ground terminal portion can be confirmed, and the protection It is easy to inspect whether or not the ground path of the plate 22 is secured.

  Next, an example in which the conducting metal fitting 3 is attached to the protection plate support member 23 without attaching the conducting metal fitting 3 to the protection plate 22 will be described. As understood from FIGS. 7 and 8, the conducting metal fitting 32 is fixed so as to protrude toward the protective plate 22. As long as conduction between the conductive metal fitting 32 and the protective plate support member 23 can be secured, the attachment position of the conductive metal fitting 32 may be any. On the other hand, the conduction screw 4 is fixed to the protection plate 22 so as to protrude toward the protection plate support member 23. By connecting the conduction metal fitting 3 attached to the protection plate support member 23 and the conduction screw 4 of the protection plate 22, conduction between the mounting rail (or substrate) and the protection plate 22 is ensured. Therefore, it is possible to ensure continuity through the path of “mounting rail (or substrate) → protection plate support member 23 → conduction metal fitting 32 → 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. In addition, a non-coating part may be formed in the back surface of the protection board 22, and the non-coating part and the conduction metal fitting 32 attached to the protection board support member 23 may be made to contact. The conducting metal fitting 3 is preferably a shape and a material that are elastically deformed. Further, by exposing the conductive screw 4 to the surface of the protective plate 22, a continuity test is facilitated.

  Next, an example in which the conductive metal 31 is not attached to the protective plate support member 23 but the conductive metal 31 is attached to the protective plate 22 will be described. As understood from FIGS. 9 and 10, the conductive metal 31 is fixed so as to protrude toward the protective plate support member 23. As long as the conduction between the conductive metal 31 and the protective plate 22 can be ensured, the attachment position of the conductive metal 31 may be any. The conductive metal 31 attached to the protective plate 22 and the protective plate support member 23 are electrically connected to each other, so that the connection between the mounting rail (or the substrate) and the protective plate 22 is ensured. In this example, a conductive screw is attached to the protective plate support member 23 so that the conductive screw is in contact with the conductive fitting 31. However, the conductive screw may be provided as necessary. Therefore, it is possible to ensure continuity through the path of “mounting rail (or substrate) → protection plate support member 23 → (conduction screw) → conduction fitting 3 → (conduction screw 4) → protection plate 22”, and continuity with the casing 11. It can be set as the structure which can ensure the earthing | grounding path | route of the protection board 22 through the attachment rail (or board | substrate) with which it was ensured.

  By the way, the electric and electronic equipment storage box 1 fixes the protective plate 22 in a state of being attached to a wall or in a self-supporting state. At that time, in order to fix the protection plate 22, it is difficult to align the plurality of protection plate fixing members 24 and the protection plate support member 23 and perform the tightening operation while pressing the protection plate 22. Workability is poor. However, as shown in FIG. 11, if the protective plate 22 can be temporarily held, workability is improved. More specifically, the protection plate 22 may be hooked and temporarily held. In this example, it is set as the structure which can be temporarily hold | maintained by hooking the protection board 22 to the conduction | electrical_connection metal fitting 32 attached to the protection board support member 23. FIG. In this example, the latching | locking part 51 is provided in the side surface formed by bending the side edge part of the protection board 22 to the apparatus mounting part 21 side. The locking portion 51 is provided to temporarily hold the protective plate 22 when the protective plate 22 is fixed. As described above, the conductive plate 32 that is engaged with the locking portion 51 provided on the side surface of the protection plate 22 is attached to the protection plate support member 23, so that the protection plate 22 is protected from the protection plate support member 23. When it is attached to, it can be temporarily held, and workability can be improved.

  When the conductive metal fitting 3 is also attached to the protective plate 22, the position where the conductive metal fitting 32 attached to the protective plate support member 23 and the conductive metal fitting 31 attached to the protective plate 22 contact each other, the conductive metal fitting 32, and the locking portion. The positions where 51 is locked are different. In this example, when viewed from the center of the protective plate 22, the latter is arranged outside the former.

  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, the protective plate fixing member employs a knurled screw, but other parts such as other types of screws may be employed.

  The conducting metal fitting in the embodiment is formed by bending a plate-like member, but the conducting metal fitting may be any shape as long as the function can be exhibited. However, the shape and material that are elastically deformed by contact with the support metal fitting can increase the contact area with the support metal fitting, so that conduction can be more reliably ensured.

  The locking portion may have any shape as long as it has a structure capable of locking the protective plate. For example, it can be formed by providing a cutout portion on the side surface of the protective plate, or formed by providing a protruding portion protruding from the side surface.

DESCRIPTION OF SYMBOLS 1 Electrical and electronic equipment storage box 3 Conductive metal fitting 4 Conductive screw 13 Electric equipment 21 Equipment mounting part 22 Protection board 23 Protection board support member 24 Protection board fixing member 31 Conduction metal fitting 32 Conductive metal fitting 51 Locking part

Claims (4)

  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 electric / electronic device storage box including a protective plate fixing member for fixing a protective plate support member, and electrically connected to a non-coating portion provided on at least one of the protective plate support member and the protective plate A box for storing electrical and electronic equipment with a conductive fitting attached to the other.   The electrical and electronic equipment storage box according to claim 1, wherein the conductive metal fitting that comes into contact with the non-painted portion of the support member is attached to the protective plate so as to protrude toward the protective plate support member on the back side of the protective plate.   The electrical / electronic equipment storage box according to claim 1, wherein a conductive metal fitting that contacts a non-painted portion provided on the back side of the protective plate is attached to the protective plate support member.   The electrical and electronic equipment storage box according to claim 3, wherein a conducting metal fitting for locking with a locking portion provided on the protection plate is attached to the protection plate support member.

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