JPS581938Y2 - Switch for 2-lamp lighting equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a changeover switch for a two-light fluorescent lamp fixture.
The object of this invention is to shorten or eliminate the lamp turn-off time when transitioning from a lamp lighting state to a single lamp lighting state.

Figure 1 is an exploded perspective view of a conventional two-lamp switch;
The figure shows an assembled cross-sectional view.

As shown in these figures, the switch consists of eight fan-shaped sections (
a to h) a plurality of fixed contacts 4 formed by embedding studs thereon;
a, 4b, 4e, 4g, shaft 5, and two movable contact pieces 6
a and a plurality of claws 6b, and a handle metal fitting I having a downward tongue piece γa and an engaging piece 7b.
, a handle 8 made of an insulating material, a coil spring 9, and a support fitting 10.The shaft 5 has both ends supported by the support fitting 10 and the substrate 1. The gear wheel 6, the handle fitting 7, the handle 8, and the coil spring 9 are rotatably fitted, and the engaging piece 7b of the handle fitting T and the handle 8 are engaged with the notch 8a of the handle 8, so that the two are Both ends of the coil spring 9 are fixed to the support fitting 10 and the handle 8, and the coil spring 9 is always connected to the stepped wheel 6 via the handle 8 and the handle fitting T.
It serves to press the handle 8 onto the substrate 1 and at the same time apply a return force to the handle 8 when the handle 8 is rotated.

When the handle 8 is rotated by a pull cord or the like (not shown), the downward tongue piece 7a of the handle fitting is pulled together with the pawl 6b of the tiered wheel 6, causing the tiered wheel 6 to move, and the two contact pieces 6a are connected to the fan-shaped section. It slides on the fixed contact and rotates one step.

When the hand pulling the string is loosened, the wheel 6 stops at that position, the tongue piece γa of the handle metal fitting slides on the wheel 6, and the handle 8 and the handle metal fitting γ are returned to their original positions by the restoring force of the spring 9.

Then, when you pull the leather strap again, the tray wheel 6 moves an additional l step in the same manner as before.

In this way, if we now connect the fixed contacts 4a and 4b to the same fluorescent lamp, connect the contact 4e to the other fluorescent lamp, connect the contact 4g to the white bulb, and connect the shaft 5 to the power supply, the two When the movable contact piece 6a is on the fixed contacts 4a and 4e, two fluorescent lamps are lit at the same time, one lamp is lit at positions 4b and f, a white bulb is lit at positions C and 4g, and a white bulb is lit at positions 4b and 4g. and h
At the position, all lights are turned off, and the two fluorescent lamps and white bulb can be blinked.

In the above operation, a moderation function is provided to the rotation of the stage wheel 6,
In addition, in order to prevent the step wheel 6 from retreating when the handle fitting I returns to its original position, a rib 2 slightly higher than the rivet head of the fixed contact is provided between the fan-shaped section where the fixed contact is located and the next sector-shaped section, and the other sections are A serrated step 3 is provided in between.

Therefore, when the movable contact piece 6a moves from the contact point 4a to the contact point 4b and crosses the rib 2 during the switching operation, the lamps connected to these contact points are temporarily turned off and are turned on again at the position of 4b.

The present invention aims to shorten such a light-off time.

FIG. 3 shows the mounting state of the fixed contact on the board 1 according to the present invention, and FIG. 4 is an enlarged view thereof.

In the present invention, the rib 2 between two fixed contacts 4a and 4b connected to the same lamp and arranged adjacent to each other is removed.

When doing this, the time required for the movable contact piece 6a of the tray wheel 6 to move to the fixed contact 4a and the straw 4b is shorter than when there is a rib, so the time is extremely short, and from the two-lamp lighting state to one When switching to the lamp lighting state, it is almost impossible to feel that the lamp goes out once.

Furthermore, even if there is no continuous rib between the fixed contacts 4a and 4b, the rib 2 between the fixed contact 4e and the fan-shaped section f, which is axially symmetrical thereto, detents the tray wheel 6, and therefore the fixed contact 4a The surfaces of the fixed contacts and the movable contact piece 6a can be made flat, and the contact between the fixed contacts and the movable contact piece 6a is stable, and there is no possibility of contact failure.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a conventional changeover switch, FIG. 2 is an assembled sectional view thereof, FIG. 3 is a perspective view of the main part of the present invention, and FIG. 4 is an enlarged view of a part thereof. 1...Substrate, 2...Rib, 4...
・Visit contact, 6a...Movable contact piece, 8...
··handle.

Claims (1)

[Scope of utility model registration request] An insulating substrate 1 in which a disc-shaped insulating plate is axially symmetrically divided into a plurality of fan-shaped sections and fixed contacts are provided in some of the sections, and two insulating substrates that rotate about the axis in sliding contact with the fixed contacts. and a step wheel 6 having a movable contact piece, the insulating substrate 1
A rib 2 is provided between the sector-shaped section in which the fixed contact is located and the next sector-shaped section in the direction of rotation of the movable contact piece, and a serrated step part 3 is provided between the other sector-shaped sections, In a changeover switch that switches a lamp circuit connected to the fixed contact by a movable contact piece to switch from a two-lamp lighting state to a one-lamp lighting state, two lamps provided in adjacent fan-shaped sections and connected to the same lamp A changeover switch for a two-lamp lighting fixture, characterized in that there is no rib between the fixed contacts, and the H fixed contact, which is axially symmetrical with one of the fixed contacts, is connected to another lamp.