JPS6222976Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a staged light control device, and an object thereof is to be able to perform staged light control with a simple configuration.

An embodiment of this invention is shown in FIGS. 1 and 2. That is, this stage dimmer is the first lamp.
It controls _L1 , the second lamp _L2, and the light bulb M, and the switch 1 is a pull switch as an example. The switch 1 is provided with fixed contacts T ₁ to _{T 6} and a pair of insulating points P ₁ and P ₂ facing each other at 8 equal intervals on the circumference of a circle at the bottom of a case 2, and a hole is formed in the center of the circle to connect the shaft. 3, pass the plate-shaped rotary contact piece 4 through the mandrel 3, overlap the insulating plate 5, which is longer than the rotary contact piece 4, on the rotary contact piece 4, and then pass the stepped wheel 6 through the mandrel 3, and connect the stepped wheel 6 and the insulating plate 5. and the rotary contact piece 4 are integrally connected,
A handle 8 is fixed to the ratchet wheel 7 by passing the ratchet wheel 7 through the mandrel 3. Further, a torsion coil spring 9 is passed through the mandrel 3, one end of which is locked to the handle 8, and the other end is locked to a support fitting 10 that fixes the mandrel 3, thereby urging the ratchet wheel 7 to rotate in the return direction. At the same time, the rotating contact pieces 4 are brought into elastic contact with the fixed contacts T ₁ to _{T 6} by the urging force in the axial direction. Further, contact portions 11 and 12, each of which is an example of a contact plate with contacts facing each other, are provided upright on the bottom of the case 2, and the insulating plate 5 is connected to the fixed contacts _T1 ,
When it is in the _T4 mode, its tip edge is the contact part 11
I am trying to make a closed connection by pressing . Therefore, the operation of this switch 1 is to pull a string (not shown) attached to the handle 8 to connect the handle 8 and the ratchet wheel 7.
The insulating plate 5 is locked by rotating the plate wheel 6.
and rotate the rotary contact piece 4. That is, by one string pulling operation, the rotary contact piece 4 rotates from contact with the fixed contacts T ₁ and T ₄ , for example, and contacts the fixed contacts T ₂ and T ₅ .
By touching and further pulling the string, fixed contacts T ₃ , T ₆ , insulation points P ₁ , P ₂ and fixed contacts T ₁ ,
Rotate to T ₄ and make contact. Fixed contacts T ₁ and T ₄ at the same time
The contact portions 11 and 12 are closed only when they are in contact with each other (normally open).

Now, the staged dimming circuit has the following configuration. That is, the terminal a of the power source E is connected to the fixed contact T ₁ ,
Connect the miniature bulb M to one terminal of the first lamp _L1 .
The other terminal b of the power source E is connected to the fixed contact _T5 and the contact portion 12. The other terminals of the miniature bulb M are fixed contacts.
T ₃ , one terminal of the second lamp L ₂ is connected to the other terminal of the first lamp L ₁ , and the other terminal of the second lamp L ₂ is connected to the fixed contact T ₄ . Furthermore, the first
The connection point of the lamp L ₁ and the second lamp L ₂ is connected to the contact part 11, the fixed contacts T ₂ and T ₄ are short-circuited, and the fixed contacts T ₅ and T ₆ are connected with the metal fitting 13. Connect short circuit.

The lighting operation is as follows. That is, the first rotation position is when the rotary contact 4 is located at the fixed contacts _T1 and _T4 and the contacts 11 and 12 are closed. In this case, the first and second lamps _L1 and _L2
are connected in parallel to the power source E and light up most brightly.

The second rotational position moves the rotating contact piece 4 to the fixed contact T ₂ ,
This is the case when it is located at _T5 . In this case, the first and second lamps L ₁ and L ₂ are connected in series to the power source E, and since the applied voltage is lowered, they are lit slightly darker than the first stage, and are dimmed in stages.

In the third rotational position, the rotating contact piece 4 is connected to the fixed contact T ₃ ,
This is the case when it is located at _T6 . In this case, the power source E
The miniature bulb M is connected to, and the miniature bulb is lit.

The fourth rotational position is the case where the rotating contact piece 4 is located at the insulation points P ₁ and P ₂ . In this case, the first lamp
L ₁ , the second lamp L ₂ , and the miniature bulb M are not connected to the power source E, and all lights are turned off.

As described above, in the staged dimmer of this invention, the conductive rotary contact piece 4 having the insulating plate 5 contacts both ends of the rotary contact piece 4 at the first to third rotation positions, respectively. A switch 1 having fixed contacts T ₁ to T ₆ and contact portions 11 and 12 that are brought into contact with each other by the insulating plate 5 at the first rotational position, and the first rotational position of the rotary contact piece 4. The first terminal connected in series between the fixed contacts T ₁ and T _{4 of}
lamp L ₁ and second lamp L _{2 , and said first lamp L 1} and second lamp L 2 .
a miniature lamp M connected between a fixed contact T ₁ at a rotational position and a fixed contact T ₃ at a third rotational position, the first lamp L ₁ and the second lamp L ₂
and the contact portion 11, and between the fixed contact _T4 at the first rotational position and the fixed contact _T2 at the second rotational position, and between the fixed contact _T5 at the second rotational position.
and fixed contact T ₆ at the third rotational position, and short-circuit between the contact portion 12 and the fixed contact T ₅ at the second rotational position and the fixed contact T ₁ at the first rotational position. Since it is characterized in that a power source E is connected between them, it has the following effects.

That is, by using the switch 1 having the plurality of fixed contacts T ₁ to T ₆ and the rotating contact piece 4 as well as the contact portions 11 and 12, stepwise dimming can be performed with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a wiring diagram of a lighting device to which an embodiment of this invention is applied, and FIG. 2 is a sectional view of a switch. T ₁ to T ₆ ... Fixed contact, 1 ... Switch, 4 ...
...Rotating contact piece, 5...Insulating plate, 11, 12...Contact part, E...Power source.

Claims (1)

[Scope of utility model registration request] It has fixed contacts T 1 to _T 6 that contact both ends of the electrically conductive rotating contact piece 4 having the insulating plate ₅ at the first to third rotational positions, respectively, and the first The insulating plate 5 in the rotational position
a first lamp L ₁ connected in series between a switch 1 having contact portions 11 and 12 brought into mutual contact with each other and fixed contacts T ₁ and T ₄ of the rotary contact piece 4 at the first rotational position; and a second lamp L ₂ and a miniature lamp M connected between the fixed contact T ₁ at the first rotational position and the fixed contact T ₃ at the third rotational position.
connecting the connection point of the first lamp L ₁ and the second lamp L ₂ to the contact portion 11;
between the fixed contact T ₄ in the first rotational position and the fixed contact T ₂ in the second rotational position and between the fixed contact T ₅ in the second rotational position and the fixed contact T ₆ in the third rotational position. Step dimming characterized in that a power source E is connected between the contact portion 12 and the fixed contact T ₅ at the second rotational position and the fixed contact T ₁ at the first rotational position, while short-circuiting each of them. Device.