JPS581936Y2 - Switch for 2-lamp lighting equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a blinking switch for a two-light fluorescent lamp fixture, and the lamp can be switched from a two-lamp lighting state to a single-lamp lighting state without losing the sense of movement during operation. The purpose of this is to avoid temporarily turning off the lights.

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

As shown in these figures, the switch consists of eight fan-shaped sections (
a"h) A plurality of fixed contacts 4 formed by embedding studs on the top
a, 4b, 4e, 4g, shaft 5, and two movable contact pieces 6a
and a stepped wheel 6 made of a conductor having a plurality of claws 6b, a handle fitting T having a downward tongue piece γa and an engaging piece γb, a handle 8 made of an insulating material, a coil spring 9, and a support fitting 10. The shaft 5 has a support fitting 10 supported at both ends by the substrate 1, and both ends of the shaft 5 are supported by the substrate 1, and a stepped wheel 6, a handle fitting γ, a handle 8, and a coil spring 9 are rotatable on the shaft 5. When the handle fitting I and the handle 8 are fitted, the engagement piece rb of the handle fitting engages with the notch 8a of the handle 8, and both rotate together, and both ends of the coil spring 9 are connected to the support fitting 10 and the handle 8. Fixed to ℃ coil spring 9
The handle 8 and the handle 8 always press the platform wheel 6 onto the substrate 1 via the metal fitting T, and at the same time serve to apply a return force to the handle 8 when it is rotated.

When the handle 8 is rotated by a pull cord or the like (not shown), the downward tongue piece 7a75f of the handle metal fitting is pulled by the claw 6b of the wheel 6, and the tray wheel 6 is rotated, and the two contact pieces 6a fix the fan-shaped section. Rotate one step after sliding on the contact point.

When you loosen your hand pulling the string, the wheel 6 stops at that position, and the tongue γa of the handle fitting slides over the wheel 6.
Only the handle fitting γ is returned to its original state by the restoring force of the spring 9.

Then, pull the leather cord again, and the tray wheel 6 will move one more step in the same motion as before.

In this way, if we now connect the fixed contacts 4a and 4b to the same fluorescent lamp, connect the contact 4o to the other fluorescent lamp, connect the contact 4g to the miniature bulb, and connect the shaft 5 to the power supply, we will have two When the movable contact piece 6a is on the fixed contacts 4a and 4e, the two fluorescent lamps are lit at the same time, the l lamp is lit at positions 4b and f, and the miniature bulb is lit at positions C and 4g. , d and h
At the position, all lights are turned off, and the two fluorescent lamps and the miniature 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 m of the stage wheel 6 when the handle fitting γ 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 eliminates such a time when lights are turned off, and at the same time does not lose the sense of motion during switching.

3 and 4 show the main parts of an embodiment of the present invention.

In the present invention, a shorting piece 12 with a rib 11 is provided between two adjacent fixed contacts 4a and 4b, except for the rib between them.
This is short-circuited and connected to one lamp, and the fixed contact 4e, which is axially symmetrical to one fixed contact 4a, is connected to the other lamp.

In such a case, the two movable contact pieces 6a are fixed contacts 4a and 4e.
When the movable contact piece 6a crosses the rib 11, the two fluorescent lamps are lit, and only one lamp is lit at positions 4b and f. The light stays on and never goes out.

Furthermore, the ribs 11 provide a sense of articulation, allowing the switching operation to be performed accurately and with a pleasant feel.

As described above, the present invention connects two adjacent fixed contacts 4a and 4b connected to the same lamp with a metal shorting piece 12 with a rib 11 in the center.
Since a and 4b are on the same plane, the contact state with the movable contact piece 6a is always stable, and the rib 11 provides a sense of joint movement during use.
When switching to the lamp lighting state, it is possible to switch the lamp that has been lit until then without turning it off.

Furthermore, since the ribs 11 are made of metal, the ribs 11 are not damaged even by rapid sliding motion of the movable contact piece 6a.

[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 a main part of an embodiment of the present invention, and Fig. 4 is an enlarged view of a part thereof. . 4a to 4g... Fixed contact, 6... Step wheel, 6a... Movable contact piece, 11... Rib, 12... Short circuit Piece.

Claims (1)

[Scope of utility model registration request] A disc-shaped insulating substrate is provided with a plurality of sector-shaped sections separated by radial ribs and serrated steps around a vertical axis, and a plurality of fixed contacts are provided by embedding studs in the sector-shaped sections. In a change-over switch for switching from a two-lamp lighting state to a single-lamp lighting state, the lamp circuit is connected to the fixed contact by two movable contact pieces that rotate in sliding contact with the fixed contact on a sector-shaped section. Short-circuit two adjacent fixed contacts connected to the lamp with a conductive piece with a rib in the center,
A changeover switch for a two-lamp lighting fixture, characterized in that another fixed contact that is axially symmetrical to one of the two fixed contacts is connected to the other lamp.