JPH026585Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a four-way switch with an operation display function used when controlling a single load from three or more locations. To provide a four-way switch with an operation display function that can be miniaturized and is inexpensive.

Generally, when a single load is controlled from three or more locations, a four-way switch is required in addition to a three-way switch. By the way, when controlling a load (for example, a light) on and off from three or more locations, it is completely meaningless to display the contact switching status of each switch. It is necessary to add an operation display function to display. Conventionally, there has been a four-way switch having such an operation display function as shown in FIG. That is, in the four-way switch A in which the switching terminals (fixed contacts a to d) of the switching switches of the two circuits SW ₁ and SW ₂ are commonly connected in a crosswise manner, the primary winding 31
are connected in series to each circuit SW ₁ and SW ₂ , respectively.
The secondary winding 32 of the current transformer 30' is connected in parallel to a light emitting element 40 consisting of light emitting diodes LD connected in antiparallel, and current is transformed by the current flowing through each circuit SW ₁ and SW ₂ , that is, the load current. transformer 30'
The voltage induced in the secondary winding 32 of the light emitting element 40
The light emitting element 40 was designed to display the operating state of the load 50.
In the figure, B is a three-way switch. however,
In such a conventional example, the current transformer 3
It is necessary to provide two 0's, which has the drawbacks of complicating the wiring, preventing miniaturization, and increasing costs. The present invention has been made in view of the above points.

Examples will be described below using figures. Figures 1 to 6 show one embodiment of the present invention.
2 is a body, and 2 is a cover, and by attaching the cover 2 to the opening surface of the body 1, a container body is formed. The body 1 consists of a switch storage chamber 1a and a transformer storage chamber 1b integrally formed on the side of the switch storage chamber 1a, and the cover 2 includes a main body portion 2a that covers the opening of the switch storage chamber 1a and a main body portion 2a
The transformer storage chamber 1b of the body 1 is provided beside the
The cover 2b covers the opening of the cover 2b. 1 in the diagram
7 is an assembly frame for connecting the body 1 and the cover 2. A pair of contact terminal plates 9, 10 and switching elements 11, 1 that constitute two-circuit changeover switches SW ₁ and SW ₂
1. The switch mechanism parts such as the fulcrum terminal plates 7 and 8 and the external connection terminal plates 5 and 6 are all housed in the switch storage chamber 1a of the body 1. Each contact terminal plate 9, 10 is an integrally formed external connection terminal plate 9a, 10a, and each has two fixed contacts a, b,
c, d, and both contact terminal plates 9, 10 arranged in the body 1 are different contact terminal plates 9, 10.
Ten fixed contacts a, c, b, and d face each other.
A pair of switching elements 11, 11 arranged between two pairs of opposing fixed contacts a, c, b, d are swingably mounted on each support terminal plate 7, 8. The external connection terminal boards 5 and 6 are also located in the switch storage chamber 1a of the body 1.
A connection spring 13 constituting a quick connection terminal is placed in contact with the connection spring 13, which is housed inside the terminal and forms a quick connection terminal on one side. 14 is a connection release button. These connection springs 13, 13 and connection release button 14 are also arranged adjacent to the external connection terminal plates 9a, 10a of the contact terminal plates 9, 10. The tumbler-shaped operating handle 3 is attached with protrusions 20 on both sides thereof swingably engaged with recesses 21 on the inner surface of the main body 2a of the cover 2, and a window 22 is provided on one side of the front surface. It is exposed to the outside through the opening 23 of the main body portion 2a. 25 is a handle cover made of a translucent material, and 26 is a name card. Compression springs 15, 15 are arranged between the operating handle 3 and each opening/closing element 11, 11, and the compression spring 15 transmits the swinging motion of the operating handle 3 to each opening/closing element 11, 1.
1, two pairs of opposing fixed contacts a, c,
Switch between b and d. A light emitting display circuit 4 is housed within the operating handle 3. This light emitting display circuit 4 is made up of a printed board 41 and a light emitting element 40.
operates the light emitting element 40 through the window 22 of the handle 3.
The light-emitting element 40 is mounted so as to be visible from the outside. 30 is a current transformer for obtaining the operating current of the light emitting element 40, which is the light emitting diode, from a commercial current, and has a pair of primary windings 31a, 31b and a secondary winding 32,
Each primary winding 31a, 31b is connected in series to each circuit _SW1 , _SW2 of the changeover switch, and the secondary winding 32 is connected in parallel to the display element 40. That is, both ends of the primary winding 31a are connected to the external connection terminal 6 and the support terminal 7, respectively, and the external connection terminal 5 and the support terminal 8 are connected to each other.
Both ends of the primary winding 31b are connected to the two ends of the primary winding 31b, and both ends of the secondary winding 32 are connected to both ends of the light emitting element 40 via the conductive pattern of the printed circuit board 41.
This current transformer 30 has primary windings 31a and 31b.
The transformer is stored in the transformer storage chamber 1b with the lead wire facing the switch storage chamber 1a. Further, the terminal plates 5 to 8 constituting the changeover switch are arranged so that their primary winding connection portions are exposed to the opening of the body 1, and the primary windings 31a and 31b are
Wire the terminal boards 5 to 8 in the switch storage room 1a.
It can be easily performed by incorporating it into the system. In this case, the current transformer 30 has a primary winding 31
A, 31b are wound with two wires, so it is slightly larger than the current transformer 30' in the conventional example, but since there is only one current transformer 30, the transformer storage chamber 1b can be made smaller than the conventional example. This means that it can be made smaller. Further, the wiring of the secondary winding 32 is also simplified, making the wiring work easier. 33 in the diagram
is an insulating tube. FIG. 6 shows an example of load control connected using a four-way switch A and two three-way switches B according to the present invention. No matter which switch A or B is operated, the load 50 is energized. If the load current flows through either circuit SW ₁ or SW ₂ of the changeover switch of the four-way switch A, the load current flows through the primary windings 31a or 31b of either one of the current transformer 30. The light emitting element 40 lights up due to the voltage induced in the secondary winding 32 of the current transformer 30, indicating that the load 30 is in operation. When the load 50 is off, no current flows through either of the circuits SW ₁ and SW ₂ , so the light emitting element 40 does not light up.

As described above, the present invention connects the switching terminals of the two-circuit changeover switch in a cross-like manner, and provides a current transformer having a pair of primary windings connected in series to each circuit. In a four-way switch with an operation display function, which is formed by connecting a light emitting element for operation display in parallel to a secondary winding, the body is formed by a body having an opening on one side and a cover covering the opening,
The body is provided with a switch storage chamber in which both changeover switches are stored and a transformer storage chamber in which the current transformer is stored, and the current transformer is stored in the transformer storage chamber with the primary winding facing the switch storage chamber. , the terminal board constituting the changeover switch is arranged so that the primary winding connection part is exposed through the opening of the body, and the load current is detected by a current transformer having a pair of primary windings and the secondary Since the light emitting element is driven by the winding output, the number of parts in the operation display section is reduced, making assembly and wiring easier, and has the effect of providing an inexpensive and compact four-way switch with an operation display function. . Further, a switch storage chamber and a transformer storage chamber are provided in the body with one side open, and the current transformer is stored in the transformer storage chamber with the primary winding facing the switch storage chamber,
The terminal board that makes up the changeover switch is arranged so that the primary winding connection part is exposed through the opening in the body, making it easy to connect the primary winding with the terminal board installed in the switch storage chamber. There is an effect.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of the present invention, Fig. 2 is a top view of the main parts of the above, Fig. 3 is a sectional view of the same, Fig. 4 is a perspective view of the main parts of the same, and Fig. 5 is the same as the above. FIG. 6 is a wiring diagram of the arrangement example described above, and FIG. 7 is a diagram showing the arrangement array of the conventional example. SW ₁ and SW ₂ are circuits, 30 is a current transformer, 31
a and 31b are primary windings, 32 is a secondary winding, and 40 is a light emitting element.

Claims (1)

[Scope of utility model registration request] The switching terminals of the two-circuit changeover switch are commonly connected in a cross shape, and each circuit is provided with a current transformer having a pair of primary windings connected in series, and the secondary winding of the current transformer is used to display operation. In a four-way switch with an operation display function made by connecting light-emitting elements in parallel, a switch storage chamber is formed by a body with an opening on one side and a cover covering the opening, and the body accommodates both changeover switches. and a transformer storage chamber in which the current transformation transformer is stored, the current transformation transformer is stored in the transformer storage chamber with the primary winding facing the switch storage chamber, and the terminal board constituting the changeover switch is connected to the primary winding. A four-way switch with an operation display function, characterized in that the connection part is arranged so as to be exposed through an opening in the body.