JPH08130101A - Resistance box - Google Patents

Abstract

PURPOSE: To lessen the number of manufacturing processes of a resistance box and make the installation of resistors easy. CONSTITUTION: Resistors 1 are secured in a frame by setting studs 8 which are electrically insulated and installed on both ends in the longitudinal direction of the resistors in recesses which are made in L-shaped steel sections 7a, 7b which constitute a base of a resistance box and then tightening the studs 8 to the L-shaped steel sections 7a, 7b with screws which are preliminarily provided in the studs 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resistor box containing a plurality of resistors.

[0002]

2. Description of the Related Art FIG. 4 shows a front view of a conventional example, and FIG. 5 shows a side view thereof. In FIGS. 4 and 5, reference numeral 1 denotes a plurality of resistors, each of which is manufactured by winding a resistance wire on a cylindrical bobbin which is an insulator and having heat resistance, and baking an insulating coating film on the resistance wire. L-shaped legs attached to both ends of the resistor in the longitudinal direction, 3 constitute a base of the resistor box, a frame for fixing the leg 2 of the resistor 1 and 4 constitute a base of the resistor box, A flat beam for fixing the frame at predetermined intervals, 5 is a nut welded to the lower surface of the frame 3, and 6 is a cover. In this configuration, each resistor 1 is fixed by being screwed to a nut 5 welded to a frame 3 of the base of the resistor box through L-shaped legs 2 attached to both ends in the longitudinal direction. . Since the nut 3 is welded to the lower surface of the frame 3 of the base of the resistor box, the nut 5 is bent so that the nut 5 is located away from the installation surface of the resistor box.

The flat beam 4 is welded to the frame 3 so as to form the base of the resistor box.

[0004]

In the above resistor box,
When the resistor box is mounted close to other equipment, when replacing the resistor 1 with the resistor box installed on its mounting surface, the removed nut 5 falls and the resistor box The nut 5 is usually welded to the frame 3 because there is a problem that the peripheral device is electrically damaged due to adhesion to peripheral devices or loss of the nut 5. Therefore, when the resistor 1 is attached to the frame, a space is required for fixing the nut to the lower surface of the frame, and the frame must be bent.
Further, since the resistor 1 must be attached to the L-shaped leg 2 and then the leg 2 must be fixed to the frame 3, there is a problem that the number of manufacturing steps of the resistor box increases.

An object of the present invention is to provide a resistor box which can reduce the number of manufacturing steps of the resistor box and facilitate the mounting of the resistor.

[0006]

According to the invention of claim 1, a plurality of resistors, a base to which the resistors are attached,
In a resistor box with a cover removably attached to its base, the resistor has studs electrically insulated from the resistor at both ends thereof, and the base has a groove into which the stud of the resistor is fitted. Two L's having a plurality of resistors and arranged back to back with an interval of at least the length of the resistor.
A resistor box composed of a shaped steel and two flat beams for fixing the L-shaped steel at the above-mentioned interval.

According to a second aspect of the present invention, in a resistor box provided with a plurality of resistors, a base to which the resistors are attached, and a cover detachably attached to the base, the resistors have one end thereof. Has a stud electrically insulated from the resistor at its part, has a bolt electrically insulated from the resistor at the other end, and the base has a plurality of grooves into which the stud of the resistor and the bolt are fitted. Two L-shaped steels that are placed back to back with an interval of at least the length of the resistor,
A resistor box composed of the two flat beams that fix the L-shaped steel at the above interval is provided.

According to a third aspect of the present invention, in the resistor box according to the first or second aspect, the two L-shaped steels have vertical portions at both ends removed, and two flat beams are provided at the portions. Resistor boxes to be joined together.

[0009]

The resistor is attached to the L-shaped steel of the base of the resistor box with nuts screwed into studs attached to both ends of the resistor. The resistor can be removed from the resistor box by loosening the clamp sandwiching the L-shaped steel with the nut attached to the stud.

[0010]

1 shows a front view of an embodiment of the present invention, and FIG. 2 shows a side view thereof. 3 shows an external view of the base. In FIGS. 1, 2 and 3, members given the same reference numerals as those in the conventional example have substantially the same function, and therefore description thereof will be omitted. In FIGS. 1, 2 and 3, 1 is a resistor, 4 is a flat beam, 6 is a cover, 8 is a stud electrically insulated from both ends of the resistor, and 7a and 7b are resistors. This is an L-shaped steel for fixing the stud 8 of the resistor 1. The L-shaped steels 7a and 7b are arranged back to back with a predetermined interval longer than the length of the resistor 1, and vertical portions at both ends thereof are removed. , This part is Hira beam 4
The two ends of are joined together to form the base of the resistor box.
Reference numeral 9 denotes a groove into which the stud 8 provided in the L-shaped steel is fitted. In this configuration, the resistor 1 has the studs 8 attached to both ends in the longitudinal direction thereof fitted into the grooves 9 formed in the L-shaped steel forming the base of the resistor box, and the nuts screwed into the studs 8 in advance. The nut is screwed close to the nut and is fixed to the L-shaped steel with a friend.

Also, although not shown, the resistor uses bolts instead of studs, for example, has a stud electrically insulated at one end and electrically insulated at the other end. It may have a bolt.

[0012]

According to the present invention, a plurality of resistors,
In a resistor box with a base to which the resistor is attached and a cover removably attached to the base, the resistor has studs electrically insulated from the resistor at both ends thereof, Is a pair of L-shaped steels having a plurality of grooves into which the studs of the resistors are fitted and which are arranged back to back with an interval equal to or longer than the length of the resistors, and its L
It is possible to reduce the manufacturing time of the resistor box by being composed of two flat beams that fix the shaped steel at the above-mentioned interval, and
It is possible to easily attach the resistor.

[Brief description of drawings]

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

FIG. 2 is a side view of FIG.

FIG. 3 is an external view of a base according to an embodiment of the present invention.

FIG. 4 is a front view of a conventional example.

FIG. 5 is a side view of FIG. 4;

[Explanation of symbols]

1 ... Resistor, 4 ... Flat beam, 6 ... Cover, 7a, 7b ... El-shaped steel, 8 ... Stud.

Claims (3)

[Claims] 1. A resistor box comprising a plurality of resistors, a base to which the resistors are attached, and a cover detachably attached to the base, wherein the resistors have resistors at both ends thereof. It has an electrically insulated stud, and the base has a plurality of grooves for fitting the studs of the resistor, and two L-shaped steels placed back to back with an interval of at least the length of the resistor. And a resistor box comprising two flat beams that fix the L-shaped steel at the above-mentioned interval. 2. A resistor box comprising a plurality of resistors, a base to which the resistors are attached, and a cover detachably attached to the base, wherein the resistors have resistors at one end thereof. The stud has an electrically insulated stud, the other end has a bolt electrically insulated from the resistor, and the base has a plurality of grooves into which the stud and the bolt of the resistor are fitted. A resistor box comprising two L-shaped steels which are arranged back to back with an interval of at least a length and two flat beams which fix the L-shaped steels at the intervals. . 3. The resistor box according to claim 1 or 2, wherein the two L-shaped steels have vertical portions at both ends removed, and two flat beams are respectively joined to the portions. Characteristic resistor box.