JPH0710533Y2 - Base mounting device for electrical equipment storage boxes - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is a base mounting for an electrical equipment storage box for mounting a metal base on which electrical equipment such as a switch, a circuit breaker, and a terminal block is mounted inside an electrical equipment storage box. It relates to the device.

[0002]

2. Description of the Related Art The metal base as described above is heavy when the box for storing electrical equipment is large, and it is difficult for an operator to lift and carry it to the mounting location in the box.
For this purpose, rails are attached to both sides of the bottom of the electrical equipment storage box in the front-rear direction, the lower end of the base is supported on the rails, and the rails are slid on the rails to carry them to the mounting location in the box. For this purpose, it is necessary to attach a considerably large guide bush for sliding on the rail on both sides of the lower end of the base. Therefore, conventionally, a guide bush is attached to the lower end of the base with a screw or the like, or the lower end of the base is bent in a U shape and the guide bush is fitted into the inside.

However, in such a conventional method, it is troublesome to attach the guide bush to the lower end of the base and to process the lower end of the base, and the guide bush is loosened so that the guide is attached when the base is attached to the box for storing electric equipment. There was a problem that the bush might be damaged.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, makes it easy to install a guide bush, easily processes the lower end of a base, and is for storing electrical equipment. The present invention has been made to provide a base mounting device for a box for storing electrical equipment in which the guide bush is not damaged when the base is mounted in the box.

[0005]

The above problems are solved by bending the lower end of a base for mounting equipment at a right angle, forming a square hole in the lower surface of the bent portion, and engaging a square hole slightly above the square hole. A guide bush having a vertical plate portion and a horizontal plate portion that can be tightly attached to the outer surface of the bent portion and has a groove on the lower surface thereof and a prism portion formed on the upper surface of the horizontal plate portion are provided through the stop holes. A base mounting for an electrical equipment storage box, characterized in that it is fixed to the lower end of the base by inserting it into the square hole from below and engaging a protrusion formed on the vertical plate part with the locking hole. It can be solved by the device.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a base made of an iron plate for mounting a device, and a lower end thereof is bent at a right angle to form a bent portion 2. As shown in FIG. 4, a square hole 3 is formed through the lower surface of the bent portion 2 at the lower end of the base 1 so as to include a corner, and a position slightly higher than the square hole 3 is more than this. A small locking hole 4 is transparently provided. Since the guide bushes need to be attached to both sides of the base 1, the square holes 3 and the locking holes 4 are naturally provided at the lower ends on both sides of the base 1.

Reference numeral 5 is a guide bush having an L-shaped cross section made of a strong synthetic resin material such as polypropylene. The guide bush 5 has a vertical plate portion 6 that comes into contact with the front surface of the lower end of the base 1 and a horizontal plate portion 7 that comes into contact with the lower surface of the bent portion 2 of the base 1, and the lower surface thereof is for housing electrical equipment. It has a groove 8 for receiving the rails of the box. Further, the vertical plate portions 6 on both sides of the groove 8 are provided with vertically extending arcuate two ridge ridge portions 9, 9.

As shown in FIGS. 2 to 4, the guide bush 5 is formed by projecting the prismatic portion 10 upward on the upper surface of the horizontal plate portion 7, and the protrusion 11 is provided inside the vertical plate portion 6. It was made. The distance between the prismatic portion 10 and the vertical plate portion 6 is set substantially equal to the plate thickness of the base 1.

As shown in FIG. 2, this guide bush 5
Inserts the prismatic portion 10 into the square hole 3 at the lower end of the base 1 from the lower side, and elastically engages the protrusion 11 inside the vertical plate portion 6 with the locking hole 4 of the base 1 so that the base 1 It is fixed to the bottom edge of.

[0010]

The above-described structure can be easily attached to the base 1 by simply inserting the guide bush 5 into the square hole 3 at the lower end of the base 1 from below as described above. The lower end of 1 need only be bent at a right angle and punched, which is easy. Furthermore, the guide bush 5 is in a state in which movement in any of the up, down, left, and right directions is restricted, and there is no fear of loosening.

When the base 1 having the guide bush 5 attached thereto is mounted in the electrical equipment storage box, the base 1 is inclined toward the front side as shown in FIG. Rails 12 on both sides of the bottom of the storage box
To match. At this time, the arc-shaped two ridge ridges 9, 9
By utilizing, it becomes easy to engage with the rail 12. In this state, if the base 1 is pushed into the electric equipment storage box, the guide bush 5 is easily slid on the rail 12 while being guided by the groove portion 8, and the base 1 reaches a predetermined mounting position. At this time, the base 1 made of a metal plate does not come into direct contact with the rail 12 and damage is prevented. Further, since there is no risk of the guide bush 5 loosening, the guide bush 5 will not be damaged when the base 1 is mounted in the electrical equipment storage box.

[0012]

As described above, according to the present invention, the guide bush can be easily attached to the base, the lower end portion of the base can be easily processed, and the base can be installed in the electrical equipment storage box. The guide bush will not be damaged during installation. Then, the base made of a metal plate material can be slid on the rail and carried to a predetermined mounting position of the electrical equipment storage box without damaging the base. Therefore, the present invention solves the problems of the conventional base mounting device for the electrical equipment storage box of this type, and its practical value is extremely great.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing a main part of an embodiment of the present invention.

FIG. 3 is a perspective view showing a guide bush of the embodiment.

FIG. 4 is an exploded perspective view showing the relationship between the guide bush and the base of the embodiment.

FIG. 5 is a side view showing a state in which the base is mounted in the electrical equipment storage box.

[Explanation of symbols]

 1 Base 2 Bent Part 3 Square Hole 4 Locking Hole 5 Guide Bushing 6 Vertical Plate Part 7 Horizontal Plate Part 8 Groove 9 Ridge Part 10 Square Column Part 11 Protrusion 12 Rail

Claims (1)

[Scope of utility model registration request] 1. A base for mounting equipment is bent at a right angle, a square hole is formed on a lower surface of the bent portion, and a locking hole is formed slightly above the square hole. A guide bush having a vertical plate portion and a horizontal plate portion which can be closely attached to the outer surface of the bent portion and having a groove on the lower surface thereof, and a prism portion formed on the upper surface of the horizontal plate portion are inserted into the square hole from below. In addition, a base mounting device for an electrical equipment storage box, characterized in that a protrusion formed on the vertical plate portion is fixed to the lower end of the base by engaging with the locking hole.