JPH04230930A - Test device for interference current protective switch - Google Patents

Abstract

PURPOSE: To provide a compact inspection device of such a structure that a revolving contact spring contacts with a deflection spring in a condition where the contact is closed. CONSTITUTION: A deflection spring 4 connected so as to feed current to a movable contact 2 and fixed to a changeover shaft 1 in the on position and the inspection pin off position rotates a contact position display device 6 round a shaft 10 counterclockwise toward a stopper 9, a contact 2 is moved by the changeover shaft 1 toward a contact 3 in a fixed position. One can check the ID color of the display device 6 through an opening 12. Thus the members of the inspection device and contact position display device can be put in a small space compactly while they are assured to exert the intended functions.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test device for a disturbance current protection switch, comprising a test key, an auxiliary current circuit for testing the disturbance current protection switch, and contacts.

0002

[Prior Art] For example, Patent No. 2618 of the Federal Republic of Germany
A test device of this type, known from German Patent No. 295, is necessary for checking the reliable operation and readiness of a disturbance current trigger in a disturbance current protection switch. This is done by closing the current circuit from one phase to the other, ie the auxiliary current circuit, via the test resistor, bypassing the integrated current transformer, by pressing the test key. The disturbance current in this case is a spurious disturbance current that causes the trigger of the disturbance current protection switch to respond and thus to release the mechanism of the disturbance current protection switch.

A disturbance current protection switch with a test key for closing a test current circuit in which the test key activates a spurious disturbance current which causes the triggering of the disturbance current protection switch to respond is disclosed in German patent no. It is known from the specification No. 2733837. In this known switch, the corresponding contact member of the switch for the test current is formed by a part of the lock switch, which part moves out of the action range of the arm of the spring arm when the lock switch is triggered. It is designed to be able to come out and turn.

However, in such a disturbance current protection switch, it is not possible to clearly confirm which position the main contact occupies each time. The position of the switch-on lever only shows the false position.

[0005]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to improve a testing device for a disturbance current protection switch of the type mentioned at the beginning, to provide a contact position indicating device, and to integrate it into a small space. The object of the present invention is to enable both the members of the inspection device and the members of the contact position display device to be constructed while maintaining their respective functions.

[0006]

[Means for Solving the Problems] According to the present invention, which solves this problem, the switching shaft for the movable contact is connected to a flexible spring, and one end of the flexible spring is centered on the rotating shaft. is held on the first lever of the rotatable contact position display device and for the auxiliary current circuit is arranged a contact spring which can be pivoted about an axis, the length of the contact spring being The dimensions are selected such that the contact spring contacts the flexible spring when the contacts are closed and the auxiliary current circuit is closed by operating the test key; The inspection keys are configured to separate from each other when they are operated.

[0007]

[Effect] According to the present invention, the cost required for the part for the function "auxiliary current circuit and touch position display device" is omitted,
This has the advantage that the device with these functional units in the disturbance current protection switch can be constructed in a thin construction. If the inspection device and the contact position display device are combined, the flexible spring for operating the contact position display device can be used at the same time as a contact member depending on the switching position.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS. 1 to 5, a switching shaft 1 with a movable contact 2 and a stationary contact 3 are accommodated in the lower part of a switch casing 11. A flexible spring 4 is connected to the switching shaft 1 and projects into the upper part of the switch casing 11. One end of the deflection spring 4 is connected to the first end of the contact position display device 6.
is held by a lever 61. The contact position display device 6
is equipped with a rotating shaft 10. The free movement of the flexure spring 4 is limited by two stops 63, 64 of the first lever 61. The contact position indicating device 6 comprises a second lever 62 on the side opposite to the first lever 61, said second lever 62 being divided into two identical sections, and the second lever 62 being divided into two identical sections. Each is color-coded with a different identification color. One section of the second lever 62 is visible through the opening 12 in the switch casing 11 . The position of the contact 2 is transmitted via the switching shaft 1 and the flexure spring 4 to the contact position display device 6, and this position can be checked from the outside by means of the second lever 62 through the opening 12 of the switch casing 11. The rotational movement of the second lever 62 is limited by stops 8,9.

The test device consists of a test key 7 with an extension pin 71. The length of the extension pin 71 is selected to such an extent that the extension pin 71 contacts the contact spring 5. The contact spring 5 is designed as a torsion spring with an axis 52 and has a bending point 51 in the central region.

The mode of operation of this inspection device is as follows.

The test device closes the auxiliary current circuit upon actuation of the test key 7, so that the function of the disturbance current protection switch can be tested. The auxiliary current circuit cannot be closed in the switched-off state.

In the "on" position shown in FIGS. 1 and 2 and in the "off" position of the test pin, the flexible spring 4, which is electrically connected to the movable contact 2 and fixed to the switching shaft 1, The contact position indicating device 6 is rotated about the axis 10 in a counterclockwise direction toward the stop 9. The movable contact 2 is moved by the switching shaft 1 in the direction towards the stationary contact 3. Through the opening 12 of the switch 11,
The identification color of the contact position display device 6 to which it belongs can be confirmed.

The position "OFF" and the test key " shown in FIG.
In the "off" position, the flexure spring 4 rotates the contact position indicator 6 in a clockwise direction towards the stop 8. Through the opening 12 in the switch casing 11, the associated identification color of the contact position indicator 6 can be ascertained. .

The position "on" and the test key shown in FIG.
In "ON", the auxiliary current circuit is closed by actuating the test key 7. In this case, the contact spring 5 contacts the deflection spring 4.

The position "OFF" and the test key " shown in FIG.
In "on", the movable contact 2 is open; in this case the auxiliary current circuit is not closed by actuating the test key 7.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a test device according to an embodiment of the present invention, with the test key in the "on" position and the test key in the "off" position.

FIG. 2 is a diagram of the inspection apparatus shown in FIG. 1, viewed from the left side of FIG.

FIG. 3 is a partially cutaway side view of the inspection device shown in FIG. 1 in a state in which the inspection device is in the "off" position and the inspection key is in the "off"position;

FIG. 4 is a partially cutaway side view of the inspection device shown in FIG. 1 in the “on” position and the inspection key “on”;

FIG. 5 is a partially cutaway side view of the inspection device shown in FIG. 1 in a state in which the inspection device is in the "off" position and the inspection key is in the "on"position;

[Explanation of symbols]

1 switching shaft, 2, 3 contact, 4 deflection spring, 5 contact spring, 6 contact position display device, 7 inspection key, 8, 9 stopper,
10 rotating shaft, 11 switch casing, 1
2 opening, 51 bending point, 52
Shaft, 61, 62 lever, 63, 64 stopper, 71 extension pin

Claims (5)

[Claims] 1. A testing device for a disturbance current protection switch, comprising a test key, an auxiliary current circuit for testing the disturbance current protection switch, and a contact, switching for a movable contact (2). The shaft (1) is connected to a flexible spring (4), and one end of the flexible spring is connected to the rotating shaft (1).
a contact spring which is held in the first lever (61) of the contact position indicating device (6) rotatable about 0) and pivotable about the axis (52) for the auxiliary current circuit; (5) is arranged, and the length of the contact spring (5) is such that when the contacts (2, 3) are closed, the contact spring (5) contacts the flexure spring (4) and the auxiliary current circuit is activated. Inspection key (7)
The dimensions of the contact spring (5) and flexure spring (4) are selected such that they can be closed by operating the A testing device for a disturbance current protection stopper, characterized in that the devices are configured to be spaced apart from each other at a distance from each other. 2. The contact position indicating device (6) comprises a segment-shaped second lever (62), the second lever (62) being divided into two sections; 2. The inspection device according to claim 1, wherein each of the marks is marked with a different identification color. 3. The first lever (61) of the contact position indicator (6) has two stops (63, 64) on the side facing the flexure spring (4), and these two stops (63, 64) Inspection device according to claim 1 or 2, characterized in that one end of the flexure spring (4) is movable between stops. 4. The free movement of the segment-shaped second lever (62) of the contact position indicator (6) is limited by two stops (8, 9), these two stops (8, 9) The distance between the openings (11) in the casing (11) for the disturbance current protection switch is such that in each case one of the two sections, each colored with a different identification color,
4. The inspection device according to claim 1, wherein the inspection device has dimensions such that it can be confirmed from the outside through the inspection device 12). 5. The contact spring (5) is configured as a torsion spring, the free end of the torsion spring being bent to form a bending point (51), the area of the bending point (51) being Attach the extension pin (71) of the inspection key (7) to
) is engaged, the inspection device according to any one of claims 1 to 4.