JP2013118214A - Electronic equipment housing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for securely ensuring a conduction path between a box body and a door with a simple and low cost structure in an electronic equipment housing box that has electric conduction between the box main body and the door through hinges coupling the box and the door to each other.SOLUTION: There is provided the electronic equipment housing box that has a door-side hinge 4 and a box-side hinge 5 coupled to each other with a hinge pin 6. The box-side hinge 5 includes a box body fitting part 7 for fitting the box body 1 while securing electric conduction to the box body, and a tube part 8 for securing the electric conduction to the hinge pin by abutting against the hinge pin with contact pressure, and conduction metal fittings 13 which secures electric conduction to the hinge pin by abutting against a head part 15 of the hinge pin are screwed to a bent part 10 at a side end of the door to secure the electric conduction between the conduction metal fittings 13 and door 2.

Description

  The present invention relates to an electrical equipment storage box in which electrical continuity is provided between a box body and a door.

  The electric device storage box is composed of a box main body and a door, and the box main body side to which various electric devices are attached is conventionally grounded. However, it is desired that electrical continuity is obtained with the door.

  In general, the door is pivotally attached to the box body with a hinge, so if the hinge metal on the door and the hinge metal on the box main body are welded to the door and the box main body, respectively, usually via the internal hinge pin Electrical continuity between the door and the box body can be obtained. However, when assembling the door after painting and the box body after painting, there is a possibility that the painting enters the hinge and the continuity between the hinge pin and the hinge metal fitting cannot be secured.

  For this reason, conventionally, a method of forming a screw part in each of the box and the door and connecting each screw part with an electric wire has been adopted in many cases, but in this case, it takes time to connect the electric wire, There was a problem that the electric wires could be damaged when wiring the mounted equipment with the door open.

  As a means for avoiding the above-mentioned problems associated with electric wire connection, the applicant of the present application attaches a box box side hinge fitting to a painted box body while ensuring electrical continuity, and attaches a door side hinge to a painted door. Are attached while ensuring electrical continuity, and the hinge brackets are connected by conductive hinge pins, and the door-side hinge has a conductive bracket made of an elastic metal plate (the conduction path between the box body and the door). Is attached with screws that break the coating film of the hinge bracket and metal touch, and the conductive bracket is brought into contact with the head of the hinge pin to make electrical connection between the box body and the door. A technique for ensuring the above is disclosed (Patent Document 1).

  However, in the technique described in Patent Document 1, the end of the door-side hinge is bent up and down, and further, the elastic metal plate is bent so that the cross section is U-shaped to form a clip-shaped conductive fitting In addition, the structure is such that the conducting metal fitting is screwed to the bent upper end of the hinge on the door side, so the problem is that the hinge structure is complicated, and the special processing of the door hinge is troublesome and expensive. There was a problem.

Japanese Patent No. 4360626

  An object of the present invention is to solve the above-mentioned problems and to provide a simple and low-cost electric device storage box in which electrical continuity is provided between the box body and the door through a hinge connecting the box and the door. It is a structure to provide a technique for ensuring a conduction path between the box body and the door.

  The electrical equipment storage box of the present invention made to solve the above problems is an electrical equipment storage box in which a door side hinge and a box side hinge are connected by a hinge pin, and the box side hinge is a box body. A box body mounting portion for mounting while ensuring electrical continuity with the hinge pin, and a tube portion for contacting the hinge pin by contact pressure to ensure electrical continuity between the hinge pin and the head of the hinge pin. It is characterized by securing the electrical continuity between the conductive bracket and the door by screwing the conductive bracket that abuts against the hinge part and secures electrical continuity between the hinge pin to the bent part of the side edge of the door. It is.

  According to a second aspect of the present invention, in the electrical equipment storage box according to the first aspect, the conductive metal fitting is made of an elastic metal plate, and the conductive metal fitting is tightened with a screw that screws the conductive metal fitting to a side end of the door. The end of the metal fitting elastically contacts the hinge pin and presses the hinge pin.

  Conventionally, in electrical equipment storage boxes that have electrical continuity between the box body and the door via a hinge that connects the box and the door, the end of the door-side hinge is bent upward and downward. Further, the elastic metal plate is bent so that the cross section is U-shaped to form a clip-shaped conductive fitting, and the conductive fitting is screwed to the bent upper end portion of the door-side hinge. There was a problem that the structure is complicated, and there is a problem that the special processing of the hinge on the door side is troublesome and the cost is high, but according to the present invention, the electric device in which the door side hinge and the box side hinge are connected by the hinge pin In the storage box, the box side hinge is attached to the box side hinge while ensuring electrical continuity with the box body, and the hinge pin is brought into contact with the hinge pin by contact pressure, so that electrical continuity is established between the hinge pin. After configuring the pipe part to be secured, the hinge is brought into contact with the head of the hinge pin. The door side hinges are specially constructed by securing the electrical connection between the metal fittings and the door by screwing the metal fittings that secure electrical continuity between the door and the bent parts at the side edges of the door. Processing becomes unnecessary, and a conduction path can be secured with a simple and low-cost structure.

It is a whole perspective view of the electric equipment storage box. It is a principal part perspective view of FIG. FIG. 3 is a vertical sectional view of FIG. 2. FIG. 3 is a state diagram in which a conductive metal fitting is removed from FIG. 2. It is attachment explanatory drawing of a conduction metal fitting. FIG. 6 is a vertical sectional view of FIG. 5.

Embodiments of the present invention will be described below.
In FIG. 1, reference numeral 1 denotes a box body of an electric device storage box, and 2 denotes a door pivotally attached to the box body 1 by a hinge 3. The box body 1 and the door 2 are painted products. FIG. 2 is a perspective view showing a main part of the first embodiment, and FIG. 3 is a sectional view thereof.

  The hinge 3 includes a door-side hinge 4 attached to the door 2, a box-side hinge 5 attached to the box body 1, and a conductive hinge pin 6 that connects the door-side hinge 4 and the box-side hinge 5. .

(Box side hinge)
The box-side hinge 5 is electrically connected between the box body attachment portion 7 that is attached while ensuring electrical continuity with the box body 1 and the hinge pin 6 in contact with the hinge pin 6 by contact pressure. It has the pipe part 8 which ensures conduction | electrical_connection. The box-side hinge 5 is plated after the iron plate is bent into a roll shape to form the tube portion 8. In the present embodiment, the box body attaching portion 7 of the box side hinge 5 is fixed to the opening step portion of the box body 1 with a tapping screw 9 to ensure electrical continuity between the box body 1 and the box side hinge 5. . Means for ensuring electrical continuity between the box body 1 and the box-side hinge 5 and between the box-side hinge 5 and the hinge pin 6 is not limited to that of the present embodiment. In the case of painting after welding the box body 1, it is also possible to form an unevenness on the outer periphery of the hinge pin to peel off the coating that has entered the tube part of the box side hinge, or attach an uneven member to ensure electrical continuity. it can.

(door)
The door 2 has a bent portion 10 formed by bending a side end portion of an iron plate constituting the door into a substantially U shape. The bent portion 10 includes a hinge mounting notch portion 11 and a notch portion 11 as shown in FIG. A screw hole 12 is formed.

  As shown in FIGS. 5 and 6, a conductive metal fitting 13 formed in a substantially L shape is attached to the screw hole 12 with a screw 14. This screw 14 is a tapping screw and can break the coating film of the bent portion 10 to ensure electrical continuity with the bent portion 10. The conducting metal fitting 13 is made of an elastic metal plate, and by tightening a screw for screwing the conducting metal fitting to the side end portion of the door, the end portion of the conducting metal fitting elastically contacts the hinge pin and presses the hinge pin. If the tip of the conductive metal 13 formed in a substantially L shape has a slight downward inclination and is pushed in the direction of the head 15 of the hinge pin 6 by tightening the screw 14, it is more reliable. Electrical continuity can be ensured.

  The attachment of the conductive metal 13 is not limited to a tapping screw as long as electrical continuity can be ensured, and for example, the paint on the bent portion 10 can be scraped off and then welded.

As shown in FIG. 3, the leading end of the conducting metal fitting 13 is elastically in contact with the side surface of the head 15 of the hinge pin 6 to ensure electrical continuity with the hinge pin 6 and at the same time, the hinge pin 6 comes off. It has a stop function.
For example, the conductive fitting described in Patent Document 1 also has a function of preventing the hinge pin from coming off at the same time as the conductive function. However, in the conventional technique described in Patent Document 1, the end of the door-side hinge is bent upward and downward. In addition, the elastic metal plate is bent so that the cross section is U-shaped to form a clip-shaped conductive fitting, and the conductive fitting is screwed to the bent upper end of the door hinge. Therefore, in order to perform the function of preventing the hinge pin from coming off at the same time as the conduction function, it is necessary to increase the size of the door side hinge, leading to an increase in manufacturing cost. In addition, there is an advantage that the door-side hinge can be shared by the left and right doors by bending the end portion of the door-side hinge vertically, but there is a problem that the yield of the material is poor. According to the present invention, since the conductive metal fitting 13 can be attached only by forming the screw hole 12 in the conventional bent portion 10 of the door, these problems can be solved.

(Door hinge)
The door-side hinge 4 has a pipe portion 16 formed by bending an iron plate into a roll shape, and is welded to the hinge mounting notch portion 11 of the door 2. When the door-side hinge 4 is fixed with screws, the installation distance of screws appears on the front and side surfaces of the door and the door, and the appearance is not good, and the screws protrude from the front and side surfaces of the door, resulting in a short insulation distance. However, these problems can be avoided by fixing them by welding. The door 2 is painted in a state where the door side hinge 4 is fixed.

  The electrical equipment storage box having the above configuration does not require special processing of the hinge on the door side, and has a simple and low-cost structure with “the conductive metal fittings 13 to 13 attached to the doors 2 to 2 with screws 14. The hinge pin 6 to be brought into contact with the head 15 to the hinge pin 6 and fixed to the box side hinge 5 to the box side hinge 5 having a tube portion 8 which is in contact with pressure while securing electrical conduction. A conduction path through which conduction is performed in the order of “box body 1” can be secured.

1 Box body 2 Door 3 Hinge 4 Door side hinge 5 Box side hinge 6 Hinge pin 7 Box body mounting member 8 Tube (box side hinge)
9 Tapping screw 10 Bending portion 11 Notch portion for hinge mounting 12 Screw hole 13 Conductive bracket 14 Screw 15 Head portion of hinge pin 16 Tube portion (door hinge)

Claims (2)

A box for storing electrical equipment in which a hinge on the door side and a hinge on the box side are connected by a hinge pin,
The box-side hinge includes a box body mounting portion that is mounted while ensuring electrical continuity with the box body, and a tube portion that is in contact with the hinge pin by contact pressure to ensure electrical continuity with the hinge pin. Have
The conducting metal fitting that contacts the head of the hinge pin and secures electrical continuity with the hinge pin is screwed to the bent portion at the side edge of the door to ensure electrical conduction between the conducting metal fitting and the door. A box for storing electrical equipment.   The conducting metal fitting is made of an elastic metal plate, and by tightening a screw that screws the conducting metal fitting to the side end of the door, the end of the conducting metal fitting elastically contacts the hinge pin and presses the hinge pin. The electrical equipment storage box according to claim 1.