JPS6333247B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION When a single load is controlled from three or more locations, the present invention provides a load operation display function that displays the load status by blinking a light emitting element housed in the operation handle. The purpose is to facilitate and ensure the connection between each terminal board of the switch mechanism and the lead wire of the current transformer, and to connect each switch mechanism and the operation handle easily and reliably. A four-way switch with a load operation display function that prevents contact is provided.

Embodiments of the present invention will be described in detail below with reference to the drawings. In the figure, 1 is a body with an opening at the top, and 2 is a cover attached to the opening of the body 1. A switch mechanism section A, a current transformer 3, and an operation handle 21 are housed in a body 1, and a cover 2 is attached to form a container body. The body 1 is comprised of a terminal board housing chamber 4 that houses a switch mechanism section A, and a side chamber 5 that houses a current transformation transformer 3 that is integrally formed with the body 1 on the side of the terminal board housing chamber 4. The terminal board storage chamber 4 and the side chamber 5 are formed to have substantially the same size, as shown in FIGS. 1 and 2a. In other words, the size of the device is approximately twice the size of a normal switch that has only a switch mechanism. In other words, a switch having only a normal general switch mechanism has a standardized size of one unit, but the switch in this embodiment houses the switch mechanism part A and has a standardized size of one unit. a terminal board storage chamber 4 having a current transformer 3;
Since it has the same size as the terminal board storage chamber 4, and the side chamber 5 has a standardized size of one unit, the body 1 and the cover 2
The size of the vessel consisting of is twice the size of one standardized unit. Therefore, the body of this embodiment is twice the size of an ordinary switch without the current transformer 3. Furthermore, the mounting frame for installing this type of switch, which is buried in a wall or the like, is generally designed to be able to mount two to three standardized switches of one unit size, so it costs twice as much as a normal switch. Despite its size, the four-way switch in this example requires twice as much space as a normal one-unit switch, but it can be installed without any problems. It is. The cover 2 is composed of a main body part 6 that covers the opening of the terminal board storage chamber 4, and a lid part 7 that is provided on the side of the main body part 6 and covers the opening of the side chamber 5 of the body 1. Reference numeral 8 in the figure is an assembly frame for connecting the body 1 and the cover 2. Both switch mechanisms A, including a pair of contact terminal plates 9, 9, switching elements 10, 10, fulcrum terminal plates 11, 11, terminal plates 12, 12, etc., which constitute a two-circuit changeover switch, are stored in the terminal plate storage chamber 4. placed. Each contact terminal plate 9, 9 has a terminal piece 13, 13 for external connection integrally formed at one end, and two fixed contacts a, b, c, d at the other end.
The fixed contacts a, c, b, and d of the different contact terminal plates 9 of both contact terminal plates 9, 9 arranged in the terminal plate storage chamber 4 face each other, respectively. Between the two pairs of opposing fixed contacts a, c, b, d, a pair of switching elements 10, 10 each having a U-shaped cross section are installed on each fulcrum terminal plate 1.
1 and 11 so as to be swingable. Fixed contacts a to d and a movable contact 14 that opens and closes are fixed to both outer surfaces of the switching element 10, and a protrusion 15 that is bent into a triangular shape at the end of the fulcrum terminal plate 11 and protrudes upward is attached to the upper end of the terminal plate 11. A switching element 10 is mounted. Each of the rising pieces 16, 16 of both fulcrum terminal plates 11, 11 is engaged with a notch 17 of the body 1 to be attached. The terminal plate 12 is also housed within the body 1,
A connection spring 19 constituting a quick connection terminal is arranged in contact with one surface of the terminal piece 18 that is connected to the outside of the terminal board 12 . 20 is a connection release button, which is similarly arranged on the contact terminal plate 9 side.

The tumbler-shaped operating handle 21 has protrusions 22 on both sides connected to recesses 2 on the inner side of the main body 6 of the cover 2.
3, and the front surface where the window 24 is provided on one side is connected to the opening 2 of the main body 6.
5 is exposed to the outside. 26 is a handle cover made of a translucent material, and 27 is a name plate. This operating handle 21 and each opening/closing element 1
Between 0 and 10 are coiled compression springs 28 and 2.
8 is arranged, and the compression spring 28 transmits the swinging motion of the operating handle 21 to swing each switching element 10, 10, thereby switching between the two pairs of opposing fixed contacts a, c, b, and d. In this way, the compression springs 28,2
8, each switching element 10, 10 is connected to the fulcrum terminal plate 1.
The opening/closing elements 10, 10 and the protrusions 15, 15 contact the machine to establish an electrical connection. A light emitting display circuit 29 is housed within the operating handle 21.
This light emitting display circuit 29 consists of a printed board 30 and a light emitting element 31 fixed to the printed board 30.
The light emitting element 31 is operated by the window 2 of the handle 21.
4, so that the blinking state of the light emitting element 31 can be seen from the outside. The printed board 30 is connected to the operating handle 21 as shown in FIG.
In order to avoid contact with exposed parts such as the printed circuit board 30 and the contact terminal plate 9 of the switch mechanism section A when the switch is reversed, the rotation axis of the operating handle 21 is oblique to the vertical axis perpendicular to the rotation axis of the operating handle 21. installed on.

And a current transformer 3 for obtaining the operating current of the light emitting element 31, which is a light emitting diode, from the commercial power supply.
Two of them are arranged side by side on both sides of a partition wall 32 protruding from the center of the side chamber 5. Further, two ribs 33 are provided protruding from the bottom surface of the side chamber 5 in a direction perpendicular to the partition wall 32, and the current transformer 3 is placed on the upper surface of the ribs 33. Therefore, as shown in FIGS. 2a and 2c, the bottom surface of the side chamber 5 and the rib 33 form a current transformer
Since a space B for dissipating heat emitted from the current transformer 3 is formed, the heat dissipation performance of the current transformer 3 is improved and the body 1
This suppresses the temperature rise inside. Also the fourth
As shown in the figure, one lead wire 34, 34 on the primary side of each current transformer 3, 3 is connected to a connecting part 37 consisting of a groove 36 opened at the upper end of the rising piece 16 of the fulcrum terminal plate 11. And current transformer 3,3
The lead wires 35, 35 through the other tube 38 on the primary side of the terminal board 12, 12 are connected to connection parts 37, 37 consisting of cut and raised pieces 41, 41 cut and raised on the upper surface of the terminal boards 12, 12, and connected to each circuit. connected in series. Secondary lead wires 39, 39 of each current transformer 3, 3 are connected to a printed board 30 of the light emitting display circuit 29. At this time, the lead wires 39 and 40 are connected to both sides of the printed board 30 corresponding to both sides of the operating handle 21, respectively. This is because if the lead wires 39 and 40 are connected to only one side of the printed board 30, the operation handle 21 will not feel good when turned over.Since the lead wires 39 and 40 are connected as described above,
1 has a good reversal feel.

Further, the connection between the connection portion 37 of the fulcrum terminal plate 11 and the lead wire 34 of the AC transformer 3 is made using the lead wire 34.
As shown in FIG.
Insert it inside, wrap it, and then solder it. Furthermore, the connection at the connecting portion 37 between the other lead wire 35 of the current transformer 3 and the terminal plate 12 is made using the lead wire 35.
The tip is cut and bent, inserted into the piece 41, and then soldered. Therefore, soldering at the connecting portions 37, 37 is easy and the connection is reliable. Lead wire 3 of current transformer 3
4 and 35 are current transformer 3 for low capacity switch
In the case of , the lead wires 34 and 35 have a small diameter, so they can be connected to each terminal 11 and 12 using the method described above, but in the case of the current transformer 3 for a high capacity switch, Do as shown. That is, FIG. 5 shows a case where the terminal plate 12 and the lead wire 65 are connected. In this case, since the diameter of the lead wire 35 is large, it is impossible to wrap it around the cut and raised piece 41. Therefore, the lead wire 35 is inserted into the lower part of the cut and bent piece 41 and fixed from above with the jig 42, and then the lead wire 35 is held down with the cut and bent piece 41 as shown in FIG. 5b and soldered. conduct. however,
The diameter d ₁ of the lead wire 35 is smaller than the dimension δ ₁ between the upper surface of the terminal plate 12 and the lower surface of the cut and raised piece 41 . The fulcrum terminal plate 11 and the lead wire 34 are connected as shown in FIG. However, the diameter of the lead wire 34
d ₁ is larger than the width δ ₂ of the groove 36.

This lead wire 34 is press-fitted into the groove 36 of the fulcrum terminal plate 11 and then soldered. Therefore, even when a high-capacity current transformer 3 is used, the connection between the lead wires 34, 35 and each terminal board 11, 12 at the connection portion 37 can be made reliably.

A circuit diagram is shown in FIG. In the figure, X indicates a four-way switch, Y indicates a three-way switch, and L indicates a load. That is, if the configuration of the above-mentioned mechanical four-way switch is shown in a circuit diagram, it is as shown in FIG. 7, and as mentioned above, one of the four-way switch The other contact terminal plate 9 on the lower side in the figure has a fixed contact c corresponding to the fixed contact a, and a fixed contact d corresponding to the fixed contact b. A switching element 10 is interposed between the fulcrum terminal plate 11 and the contact terminal plate 9.
When the switching elements 10, 10 are tilted toward the fixed contacts b, c, the movable contacts 14, 14 of the switching elements 10, 10
14 contacts fixed contacts b and c, and fixed contacts d and a
It is separate from that. Next, when the operating handle 21 is operated and the opening/closing elements 10, 10 are reversed,
The switching elements 10, 10 fall toward the fixed contacts d, a, and the movable contacts 14, 14 of the switching elements 10, 10 open and separate from the fixed contacts b, c, respectively, to the fixed contacts d, a.
Make contact with. Not only can the load L be controlled by operating either switch X or Y, but also because one circuit in the four-way switch X is always on when the load L is energized.
The commercial current flowing at this time is transferred to one current transformer 3.
The secondary output obtained by current transformation is applied to the light emitting element 31, and the light emitting element 31 lights up, indicating that the load L is in operation. When the load L is off, both circuits are off, so the light emitting element 31 does not light up. Therefore, when current flows to the load L through the changeover switch of any one circuit, it is the secondary output of the current transformer 3 and is housed in the operating handle 21.
The light emitting element 31 facing the window 24 emits light to display the operation of the load L, and is used when the load L cannot be seen from the location where the switch to be operated is located, even when the load L is controlled from multiple locations. It's especially convenient.

The center line of the opening/closing elements 10, 10 of the two switch mechanisms A arranged in parallel (A in FIGS. 2a and b) is located at the axial center of the operating handle 21 (B in the same figure). It is arranged eccentrically toward the center of the body 1. That is, in the side wall 43 of the body 1, the distance D between the end of the switch mechanism section A and the outer surface of the side wall 43 is increased as shown in FIG. 2a to improve insulation performance.

As described above, the present invention connects the switching terminals of the switch mechanisms of two circuits in a cross-like manner, and connects a current transformer in series to each circuit.
The next output is connected to a light-emitting display circuit, and a container is constructed of a body with an opening and a cover attached to this body opening, and the two circuits are placed in a terminal board storage chamber formed in the body of the container. A common operating handle for both switch mechanisms is placed inside the opening of the cover, and the light-emitting display circuit is mounted inside the operating handle, and the light-emitting display circuit is installed in the window provided in the operating handle. A side chamber which is approximately the same size as the terminal board storage chamber and is formed integrally with the body is provided on the side of the switch mechanism section which is housed in the terminal board storage chamber of the body, and which faces the light emitting element of the body. Two current transformers are installed in parallel indoors, a contact terminal board is connected to the outside at one end and has a fixed contact at the other end, and a switching element that swingably opens and closes on the fixed contact of the contact terminal board. The fulcrum terminal plate and the terminal plate of a switch mechanism section are composed of a fulcrum terminal plate that forms a fulcrum of a switching element, and a terminal plate that is connected to the outside and is connected to the fulcrum terminal plate via a current transformer. A connection part for connecting one lead wire of the current transformation transformer is formed on the upper part, and the connection part of the fulcrum terminal plate is formed into a groove shape with an open top surface, and the connection part of the terminal plate is cut up and opened on the side. Since it is a cut and raised piece, when connecting the fulcrum terminal board and terminal board housed in the body to the lead wire of the current transformer, if the current transformer has a small capacity, the lead Insert the wire into the groove of the fulcrum terminal board and wrap it around.
In addition, it can be inserted into the cut-and-raised piece of the terminal board for soldering, etc. In the case of a large-capacity current transformer, the lead wire with a large diameter can be press-fitted into the groove of the fulcrum terminal board. In addition, it is now possible to insert the lead wire into the lower part of the cut-and-raised piece of the terminal board and caulk it from above using a jig, etc., so that the same fulcrum terminal board and terminal board can be used even if the capacity of the AC transformer is different. Furthermore, by arranging the printed board on which the light emitting elements of the light emitting display circuit are fixed at an angle to the direction perpendicular to the axial direction and the vertical direction of the operating handle, the entire printed board Instead of increasing the size of the operating handle itself to ensure distance from the connecting part, the present invention places the printed board diagonally so that the operating handle can be reversed without increasing the size of the operating handle itself. The switch does not come into contact with the connection between each terminal board and the lead wire, nor does it come into contact with exposed parts of other switch mechanisms, so there is no risk of accidental contact with the operating handle. This has the effect that the reversal operation can be performed without any problem. In addition, by connecting the other lead wires from the current transformer to both sides of the printed board, unlike connecting the lead wires to only one side of the printed board, it is possible to avoid printing when the operating handle is operated. The board is well-balanced and the operating handle feels good when turned over. Furthermore, a side chamber that is approximately the same size as the terminal board storage chamber and is formed integrally with the body is provided on the side of the switch mechanism housed in the terminal board storage chamber of the body, and two side chambers are provided in this side chamber. Since the current transformers are installed side by side, the side chamber that houses the two current transformers is approximately the same size as the terminal board housing chamber that houses the switch mechanism, and is placed on the side of the terminal board housing chamber. By providing this, the size of the device consisting of the body and cover is approximately twice as large as that of an ordinary standardized one-unit switch that simply has a switch mechanism. Moreover, since it has two current transformers installed in parallel in the side chamber, it is twice the size of the general switch mentioned above, and the body is also small. can be flattened, that is, 2
Despite having several current transformers,
The depth dimension can be reduced, so
It is possible to shorten the construction dimension of the depth on construction materials such as walls, and has the effect of facilitating construction on construction materials. Furthermore, the mounting frame for installing this type of switch, which is buried in a wall or the like, is generally designed to be able to mount two to three standardized switches of one unit size.
Even though it is twice the size of a normal switch,
When installing the four-way switch in this example, it is necessary to
Although it takes twice as much space, it can be installed without any problems. Furthermore, the thickness of construction materials is not always sufficiently thick, and if the thickness of construction materials is relatively thin, it is impossible to install a switch with a depth dimension due to insulation, etc. Although the switch cannot be disposed for safety reasons, it is possible, as in the present invention, to make the side chamber housing the two current transformers approximately the same size as the terminal board storage chamber housing the switch mechanism. Since the current transformer is installed on the side of the terminal board storage chamber, the depth dimension is shorter than when the current transformer is installed in the depth direction. This has the effect of allowing a switch to be installed.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a four-way switch according to an embodiment of the present invention, FIGS. Figure 4 is an exploded perspective view showing the connections between the lead wires and each terminal board of the current transformer as above, and Figures 5 a and b are explanations showing how to connect the terminal boards and lead wires in the case of high capacity as above. Figures 6a and 6b are explanatory diagrams showing how to connect the fulcrum terminal plate and lead wires as above, and Figure 7 is a circuit diagram using the four-way switch as above, 1 is the body, 2 is the cover, 3 1 is a current transformer, 4 is a terminal board storage chamber, 5 is a side chamber, 9 is a contact terminal board, 10 is a switching element, 11 is a fulcrum terminal board, 12 is a terminal board, 21 is an operation handle, 25 is an opening, 33 is a ribs, 3
4 and 35 are lead wires, 36 is a groove, 37 is a connection part,
39, 40 are lead wires, 41 is a cut and raised piece, a,
b, c, d are fixed contacts, A is the switch mechanism, B
is a space for heat radiation.

Claims (1)

[Claims] 1. Connect the switching terminals of the two-circuit switch mechanism in a common manner in a crossed manner, connect a current transformer in series to each circuit, connect the secondary output of each current transformer to the light emitting display circuit, and one side is open. The body and the cover attached to the body opening constitute a body, and the switch mechanisms of the two circuits are stored in the terminal board storage chamber formed in the body of the body, and the switch mechanisms of both circuits are common to each other. The operating handle is placed in the opening of the cover, the light emitting display circuit is mounted inside the operating handle, the light emitting element in the light emitting display circuit is exposed through the window provided in the operating handle, and the light emitting display circuit is placed in the terminal board storage chamber of the body. A side chamber that is approximately the same size as the terminal board storage chamber and is formed integrally with the body is provided on the side of the equipped switch mechanism, and two current transformers are installed in parallel in this side chamber, with one end A contact terminal board that is connected to the outside and has a fixed contact at the other end, a switching element that swingably opens and closes on the fixed contact of the contact terminal board, a fulcrum terminal board that forms the fulcrum of this switching element, and is connected to the outside. a connection section for connecting one lead wire of a current transformer to the upper part of the fulcrum terminal board and the terminal board of the switch mechanism section, which is composed of the fulcrum terminal board and a terminal board connected via a current transformer; and the connection part of the fulcrum terminal plate is formed into a groove shape with an open top surface,
The connecting part of the terminal board is cut and raised to form a cut-and-raised piece with the side open, and the printed board on which the light-emitting element of the light-emitting display circuit is fixed is diagonally perpendicular to the axial direction and the vertical direction of the operating handle. A four-way switch with a load operation display function, characterized in that the other lead wire from the current transformer is connected to both sides of a printed board.