JPS6326894Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is equipped with a load operation display function that can display the load status by flashing a light emitting element housed in the operation handle when a single load is controlled from three or more locations. The purpose of this is to provide a four-way switch with a load operation display function that facilitates the connection between each terminal board of the switch mechanism and the lead wire of the current transformer, and improves the insulation between both terminal boards. road switch.

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 includes a terminal board storage chamber 4 that houses the switch mechanism part A, and a current transformer integrally formed on the body 1 via a partition wall 44 that protrudes from the bottom of the body 1 on the side of the terminal board storage chamber 4. It consists of a side chamber 5 that houses a transformer 3. The cover 2 includes a main body 6 that covers the opening of the terminal board storage chamber 4, and a main body 6 that covers the opening of the terminal board storage chamber 4.
and a lid part 7 provided beside the body 1 to cover 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. be 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 face each other in both contact terminal plates 9, 9 arranged in the terminal plate storage chamber 4. 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 fixed to the upper end of the protrusion 15. A switching element 10 is mounted. The two fulcrum terminal plates 11, 11 are engaged with the notches 17 of the partition wall 44, and the rising pieces 16, 16 are arranged in the side chamber 5. Further, one fulcrum terminal plate 11 is arranged lower than the horizontal position of the other fulcrum terminal plate 11. That is, a groove 45 is cut on the bottom surface of the body 1 and is one step lower than the other bottom surface, and one fulcrum terminal plate 11 is inserted into this groove 45 as shown in FIG.
is placed. This is both fulcrum terminal plates 11, 11
By providing a difference in height between the terminal plates 11 and 11, a sufficient creepage insulation distance is provided, and the insulation between the two fulcrum terminal plates 11, 11 is improved. The terminal plate 12 is also housed within the body 1, and a connection spring 19 constituting a quick connection terminal is disposed in contact with one surface of a terminal piece 18 that is connected to the outside of the terminal plate 12. Reference numeral 20 denotes 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 are mechanically contacted to establish an electrical connection. A light emitting display circuit 29 is housed within the operating handle 21. The light-emitting display circuit 29 is made up of a printed board 30 and a light-emitting element 31 fixed to the printed board 30. The light-emitting display circuit 29 is installed with the light-emitting element 31 facing the window 24 of the operating handle 21, and the blinking state of the light-emitting element 31 is displayed. is made visible from the outside. The printed board 30 is rotated so that the printed board 30 does not come into contact with exposed parts such as the contact terminal plate 9 of the switch mechanism section A when the operating handle 21 is reversed as shown in FIG. It is mounted diagonally to the axis that is orthogonal to the moving axis in the vertical direction.

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.
are arranged on both sides of a partition wall 32 protruding from the center of the side chamber 5. Further, two ribs 33 are provided projecting from the bottom surface of the side chamber 5 in a direction perpendicular to the partition wall 32 as shown in FIGS. 1 and 3, and the current transformer 3 is placed on the upper surface of the ribs 33. Therefore, the bottom surface of the side chamber 5 and the ribs 33 form a space B for dissipating the heat generated from the current transformation transformer 3, so that the heat dissipation of the current transformation transformer 3 is improved and the temperature rise within the body 1 is suppressed. It is something that will be done. Further, as shown in FIG. 3, the connection parts 37, 37 provided on the upper parts of the rising pieces 16, 16 of both the fulcrum terminal plates 11, 11 are disposed on the side chamber 5 through the partition wall 44, and each current transformer 3 ,3
One lead wire 34, 34 on the primary side is connected to the upper end of the rising piece 16, 16 of the fulcrum terminal plate 11, 11 with a connecting portion 37, 37 consisting of a groove 36 opened on the upper end surface thereof.
Cut and raised pieces 4 are formed by cutting and raising the lead wires 35, 35 on the upper surface of the terminal plates 12, 12, respectively, and connecting the lead wires 35, 35 through the other tube 38 on the primary side of the current transformation transformers 3, 3.
1 and 41, and are connected in series to each circuit. Secondary lead wires 39 and 40 of each current transformer 3 and 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 the lead wires 39 and 40 are connected only to one side of the printed board 30.
This is because if the lead wires 39 and 4 are connected, the reversal feeling of the operating handle 21 becomes worse.
0 is connected, the operation handle 21 feels good when turned over.

Further, the connection between the connection part 37 of the fulcrum terminal plate 11 and the lead wire 34 of the current 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 above-mentioned connection portion is easy and the connection is reliable.

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. 5, 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.
Connect with contact. 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, the light emitting element 31 housed in the operating handle 21 and facing the window 24 of the operating handle 21 emits light with the secondary output of the current transformer 3. This is particularly convenient when the load L is controlled from multiple locations and the load L cannot be seen from the location where the switch to be operated is located.

As described above, the present invention is a four-way switch, which includes a contact terminal board having one end connected to the outside and a fixed contact at the other end, a switching element that swingably opens and closes on the fixed contact of the contact terminal board, and Two sets of switch mechanisms are provided in the body, each consisting of a fulcrum terminal plate forming a contact point of a switching element and a terminal plate connected to the outside and connected to the fulcrum terminal plate via a current transformer. The connection part of each fulcrum terminal plate that connects each fulcrum terminal plate of both switch mechanisms and the lead wire of the current transformation transformer is removed from the terminal board storage chamber through a partition wall into the side chamber. Since each fulcrum terminal board is placed in the body, it is easy to connect the lead wires of the current transformer.
Further, since the two fulcrum terminal plates disposed on the bottom surface of the body are arranged with a difference in height, there is an advantage that the creeping distance between the two fulcrum terminal plates can be increased and the insulation between the two fulcrum terminal plates can be improved.

[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, Fig. 2 is a sectional view of the same, Fig. 3 is a plan view of the same, and Fig. 4 shows the lead wires and various parts of the current transformer. Figure 5 is an exploded perspective view showing the connection with the terminal board, and Figure 5 is a circuit diagram using the same four-way switch as described above, where 1 is the body, 2 is the cover, 3 is the current transformer, 4 is the terminal board storage chamber, and 5 is the circuit diagram using the same four-way switch. 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, 34, 35 are lead wires, 37 is a connection part, 44 is a partition wall ,a,b,
C and d are fixed contacts, and A is a switch mechanism.

Claims (1)

[Scope of utility model registration request] The switching terminals of the two-circuit switch mechanism are commonly connected in a cross-like manner, a current transformer is connected in series to each circuit, and the secondary output of each current transformer is connected to a light emitting display circuit. The switch mechanism for the two circuits is housed in a body consisting of a cover attached to the body opening, and a common operation handle for both switch mechanisms is disposed within the opening of the cover. The light-emitting display circuit is installed inside the body, and the light-emitting element in the light-emitting display circuit is exposed through a window provided in the operating handle, and a side chamber is provided on the side of the switch mechanism housed within the body to be formed integrally with the body. In a four-way switch in which both current transformers are arranged in a side chamber of a lever, a contact terminal board is connected to the outside at one end and has a fixed contact at the other end;
A switching element that swingably opens and closes on a fixed contact of a contact terminal plate, a fulcrum terminal plate that forms a fulcrum of this switching element, and a terminal that is connected to the outside and is connected to the fulcrum terminal plate via a current transformer. Two sets of switch mechanism sections consisting of a board are stored in a terminal plate storage chamber provided in the body, and each fulcrum connects each fulcrum terminal plate of both switch mechanism sections and the lead wire of the current transformation transformer. The connecting portions of the terminal boards are arranged from the terminal board storage chamber to the side chambers via the partition wall, and the two fulcrum terminal boards arranged on the bottom surface of the body are arranged with a difference in height. A four-way switch with a load operation display function.