JPH0415993B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a terminal structure of an electronic switch embedded in a wall surface or the like to control a lighting load or the like.

[Background technology] Conventionally, there has been a hybrid contact that includes a drive circuit that outputs an operation signal when an operation switch is operated, and a switching element that turns the load on and off according to the signal from the drive circuit, and a relay contact that normally supplies power to the load. An electronic circuit section consisting of a circuit, etc. is housed within the body of the switch body, and a terminal board for supplying power to the electronic circuit section, a terminal board for supplying power to the load and the load, and a terminal board for supplying power to the load are connected in parallel with the operating switch. An electronic switch in which a terminal board for sending data to a child device for external operation is housed within the housing has been known, but the terminal structure of this conventional electronic switch was as follows. In other words, the electronic circuit section that controls the load and the terminal board that is connected to the outside were directly soldered using lead wires, but because of the large number of terminal boards and the connection using lead wires, it was extremely difficult to assemble. There was a problem.

[Purpose of the invention]

The present invention has been provided in view of the above-mentioned points, and provides a terminal structure for an electronic switch that is intended to facilitate connection between a terminal board and an electronic circuit section and improve assembly efficiency. .

[Disclosure of the invention]

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Figure 1 shows an exploded perspective view of the switch body A. In the figure, 1 is a box-shaped body with an open top;
is made of a synthetic resin molded product made of glass fiber-reinforced melamine resin, and is provided with a terminal board storage recess 2 and an electronic circuit storage recess 3 inside. Note that the specific circuit of the electronic circuit section will be described later. 4 is a terminal board connected to an external commercial power source for supplying power to the electronic circuit section, and 5 and 6 are terminal boards for connecting the load to be controlled and the power source. In addition, a pair of terminal boards 7 and 8 are provided for connecting the switch body A to a slave device operated from the outside to control the load.
are also provided. Each of these terminal plates 4 to 8 is mounted in the terminal plate storage recess 2 of the container body 1. Reference numeral 9 denotes a cover placed over the opening surface of the container body 1, and is molded from the same material as the container body 1. Also, around each terminal board 4..., there is a locking spring 10 for making contact connection with a conductor from the outside, an indicator piece 11 for confirming insertion of the conductor, and a release button for disconnecting the conductor. button 12 are arranged. Locking spring 10... and
The terminal plates 4... are arranged in parallel, and the conductor 1 of the electric wire 14 is connected between the flat part of the terminal plate 4... and the locking spring 10...
It forms a so-called connecting element that clamps 4a. When this conductor 14a is inserted through the wire insertion hole 15 drilled in the lower surface of the container 1 as shown in FIG. Then, the tip of the conductor 14a pushes up the L-shaped piece 16 of the display piece 11, and the conductor 14a is locked. At this time, the display piece 11 changes from a state in which it protrudes from the small hole connected to both ends of the jig insertion hole 17 of the container body 1 as shown in FIG. 2a, to a state in which it is retracted into the small hole as shown in FIG. 2b. , indicates that the conductor 14a has been inserted and connected. Then, by inserting a jig such as a screwdriver through the jig insertion hole 17 and pressing the release button 12 provided corresponding to each terminal board 4..., the lock of the conductor 14a by the locking spring 10... is released. When the conductor 14a is pulled out, the coil spring 13
Display piece 11 is pushed by the urging force of
The lower end of the container body 1 protrudes from the small hole.

Reference numeral 18 denotes a frame-shaped mounting frame made of aluminum die-casting, into which the peripheral wall 20 formed on the top surface of the cover 9 is fitted from below into the central window hole 19, and the protrusion 21 of the cover 9 and the mounting frame 18 are inserted. The hole 22 is inserted and temporarily fixed. Incidentally, the container body 1 and the cover 9 are fixed together by assembly screws 23 from the bottom surface of the container body 1. Reference numeral 27 denotes a handle of the operating switch SW. This handle 27 is molded from the same material as the container body 1, and is lowered by fitting a flat plate-shaped stopper 28 made of stainless steel into a groove 29 formed in the center of the lower surface. It is fitted into the opening 30 of the cover 9 to prevent it from falling in the direction. The stopper 28 is mounted with a mounting screw 25 on a printed circuit board 24 made of a glass base material on which an electronic circuit is mounted.
One end is fixed with a screw 31 to a brass spacer 26 erected on the upper surface of the printed circuit board 24. The other end of the stopper 28 is placed on a mounting piece 33 below the notch 32 on the opening 30 side of the cover 9, and an inverted triangular support 34 is placed on both ends of the groove 29 of the handle 27, and the handle is 27 can be freely swung to both the left and right sides. Reference numeral 35 denotes a fixed spring made of stainless steel, and this fixed spring 35 is attached to the central boss portion 40 of the handle 27 as shown in FIG.
The cosmetic handle 36 is press-fitted and fixed, and the engagement claw 38 is engaged with a sealing portion 37 of a cylindrical rib 41 provided on the lower surface of the cosmetic handle 36, which will be described later, to removably connect the cosmetic handle 36. 39 is the handle 27 and the printed circuit board 24
A coil spring is compressed between the handle 27 and the top surface, and constantly biases the decorative handle 38 upward via the handle 27. Note that 42 is a mounting screw for mounting the printed circuit board 24 to the cover 9. Then, when the cover 9 is placed over the container body 1, the edge of the printed circuit board 24 is locked to the stepped portion 43 of the container body 1.

Switches 44 and 45 consisting of micro switches are arranged on the printed circuit board 24, and protrusions 46 protruding from both sides of the lower part of the handle 27 are arranged in contact with push buttons 44a and 45a of the switches 44 and 45. By operating the makeup handle 36, the handle 27 swings and switches 44 or 4.
5 will be driven. In addition, printed circuit board 2
4 is equipped with light emitting diodes LED ₁ LED ₂ to display the off state and on state of the load, respectively. A drive circuit 58, which will be described later, is mounted on this printed circuit board 24 in this manner. The HR is a hybrid contact block, and when the load is turned on and off, the switching element, triac TR, is used to open and close the switch, while the relay Ry ₁ contacts normally supply power. Relay Ry ₁ , tryack
A hybrid contact circuit 47 consisting of a TR, a temperature fuse TF, etc. is mounted on a printed circuit board 49. Note that the temperature fuse TF is placed closely to the triac TR. This printed circuit board 49 is a printed circuit board 24 mounted with a drive circuit 58 housed in the electronic circuit storage recess 3 of the container body 1.
placed above. The printed circuit board 49 has connection pieces 4a to 4 formed at the tips of the terminal boards 4 to 8.
Insertion holes 51 into which the 8a are inserted are formed respectively. The respective insertion holes 51 are appropriately connected via the pattern 50 to form a circuit, and are also connected to the hybrid contact circuit 47 via the pattern 50. The connection pieces 4a to 8a of each terminal board 4 to 8 are inserted into each insertion hole 51 of the printed circuit board 49 and soldered, and each terminal board 4 to
8 and the pattern 50 are electrically and mechanically connected. Then, the printed circuit board 49 and the printed circuit board 2
4 through a lead wire 52. Reference numeral 54 denotes a terminal cover made of the same material as the container 1. The terminal cover 54 is placed on the upper surface of the printed circuit board 49, and the terminal cover 54 is fixed to the container 1 with mounting screws 55. Therefore, the printed circuit board 49 is clamped and fixed between the terminal cover 54 and each of the terminal boards 4 to 8.

Figure 4 shows a block circuit diagram of the electronic circuit section.
FIG. 5 shows a specific circuit diagram. A is the switch body as a parent device, and B is a slave device that can be operated from multiple locations, and an arbitrary number can be connected.
AC is a commercial power source, and L is a load such as a lighting load. 56 is a power supply circuit, which includes transistors Q ₁ Q ₂ ,
It is composed of thyristor SCR, etc., and is powered by commercial power.
The AC power is half-wave rectified by the diode _D1 , and the phase is controlled at an appropriate conduction angle by the time constant of the capacitor _C1 and resistor _R2 . The voltage output from the power supply circuit 56 is smoothed by the capacitor C ₂ and input to the voltage switching circuit 57 . The voltage switching circuit 57 includes a transistor Q ₃ , a Zener diode ZD ₂ ZD ₃ , and the like, and the output voltage value is switched depending on the magnitude of the Zener voltage of the Zener diode ZD ₂ ZD ₃ . Here, for example, the Zener voltage of the Zener diode ZD ₂ is set to 48V, and the Zener voltage of the other Zener diode ZD ₃ is set to 24V. 58 is a drive circuit, operation switch SW,
2-winding latching relay Ry ₃ , light emitting diode
It consists of LED ₁ LED ₂ , capacitor C ₃ , etc. Contact r ₁ of relay Ry ₂ is a light emitting diode
Switching the display of LED ₁ LED ₂ . The light emitting diode LED ₁ lights up when the load L is off, and the other light emitting diode LED ₂ lights up when the load L is on. Also,
The other contact _r2 charges and discharges the capacitor _C3 . As described above, the hybrid contact circuit 47 is composed of a single winding latching relay Ry ₁ and a triac TR. The relay Ry ₁ is excited in the opposite direction when the capacitor C ₂ is charged and discharged, and one of its contacts Ry ₁ is a triac
It is used for triggering the TR, and the other contact Ry ₂ is connected in parallel with the triac TR. When the relay Ry ₁ is illustrated and turns on the load L, the contact RY ₁ is closed first, and the contact RY ₂ is closed later. Further, when turning off the load L, the contact Ry ₂ is opened first, and the contact RY ₁ is opened later. This effect is achieved by the mechanical contact structure of relay Ry ₁ . 61 is a power supply short-circuit prevention circuit, which is composed of transistors Q ₄ Q ₅ , and prevents excessive current from flowing by turning off transistor Q ₄ when the operation switch SW is operated, and a light emitting diode LED ₁ LED ₂ This prevents the non-lighting condition from occurring. The child unit B is composed of a voltage detection circuit 59 that detects the magnitude of the voltage from the drive circuit 58 using a Zener diode ZD ₄ , and a status display circuit 60 including a transistor Q ₄ and light emitting diodes LED ₄ LED ₅ . When the load L is off, the light emitting diode LED ₄ lights up, and when the load L is on, the light emitting diode LED ₅ lights up. D.B.
is the diode bridge, and SW' is the switch body A.
This is an operation switch connected in parallel with the side operation switch SW. Further, each terminal T ₁ to _{T 4} has the same symbol to indicate connection.

However, when the load L is off, contact _r1 is normally closed, so the light emitting diode
LED ₁ lights up, indicating that load L is off. Furthermore, since the contact _r2 is also normally closed, the capacitor _C3 is charged. Since Zener diode ZD ₂ is on, a higher voltage is applied between terminals T _{3 and} T ₄ of slave B, and therefore Zener diode ZD ₄ is on and transistor Q ₆ is on. The light emitting diode LED ₄ lights up, indicating that the load L on the slave unit B side is in the off state. Next, when the operating switch SW is pressed, current flows through the set coil SC of the relay Ry ₂ , and both contacts r ₁ r ₂ are closed to the normally open side. Therefore, the light emitting diode LED ₂ is turned on, and the relay Ry ₁ is energized so that the charge in the capacitor C ₃ is discharged through the contact r ₂ and the relay Ry ₁ . Then, the contact _RY1 turns on first, triggering the triac TR and supplying power to the load L. Next, contact RY ₂ closes with a slight delay from the ON operation of contact RY ₁ , and normally power is supplied to load L via this contact RY ₂ , which prevents heat generation due to energization of triac TR and also closes contact RY 2. By not opening and closing RY ₂ , it is possible to use a contact with a small capacity. At this time, by closing the contact r ₁ to the normally open side, the Zener diode ZD ₂ with the lower Zener voltage is turned on, and in the slave unit B, the Zener diode ZD ₄ is turned off, and the transistor Q ₆ starts emitting light. Diode LED ₄ is also turned off. Then, the other light emitting diode LED ₅ lights up to indicate that the load L is in the on state. Next, press the operation switch SW again, and the relay
Current flows through the reset coil RC of Ry ₂ , and the contacts r ₁ r ₂
Bring it back. When contact r ₁ returns, light-emitting diode LED ₁ , which indicates that load L is off, lights up, and contact r ₂
The return of the capacitor _C3 is charged, and this charging current causes the relay _Ry1 to close its contacts.
RY ₁ RY ₂ returns. At this time, the contact _RY2 is opened first, and then the contact _RY1 is restored and the load L is opened by the triac TR. Also, on the slave unit B side, a light emitting diode LED ₅
is turned off, and light emitting diode LED ₄ lights up to indicate off. In addition, the operation switch of slave unit B
SW' can also be operated using the operating switch on switch body A.
It is similar to SW operation.

Next, the case where the embedded type switch main body A according to the present invention is attached to a wall surface W will be explained. First, the 6th
As shown in the figure, wiring is performed in advance, and the mounting frame 18 is fixed to the embedded box X or wall surface W with screws 69. Next, a decorative material Y such as a cloth is attached to the wall surface W, and the decorative material Y is cut along the mounting frame 18 to expose the embedded type switch main body A according to the present invention. After loosening the screws 69, the synthetic resin lower frame 62 is attached to the lower surface of the mounting frame 18. At this time, first, attach the screw 69 to the lower frame 6 as shown in FIG.
The mounting frame 18 is positioned on the lower frame 62 through the opening 64 at the center of the lower frame 62 by loosely fitting the two notches 63 . Therefore, the lower frame 62 can be mounted on the lower surface of the mounting frame 18 without removing the mounting frame 18. Then, the mounting frame 18 is placed on the lower frame 62, the projections 65 of the lower frame 62 are fitted into the holes 66 of the mounting frame 18, and the screws 69 are tightened. Therefore, even if the decorative material Y is thick, by tightening the screws 69, the entire decorative material Y that is in contact with the lower frame 62 is pressed against the wall surface W side.

Next, after screwing the decorative plate 67 made of synthetic resin molding to the mounting frame 18 together with the inner frame 68 made of aluminum die-casting, the decorative handle 36 is loosely fitted into the opening of the inner frame 68 as shown in FIG. To,
The cylindrical rib 41 of the decorative handle 36 is attached to the handle 27.
The latching portions 37 on both sides of the cylindrical rib 41 engage with the latching claws 38 on both sides of the fixed spring 35, and the decorative handle 36 is detachably connected to the handle 27. At this time, the cylindrical rib 4
The steady rest ribs 70 at both ends of the handle 27 also engage with the grooves 27c at both ends of the handle 27. In addition, the display light emitting diode LED ₁ LED ₂ is connected to the long hole 3 of the decorative handle 36.
It will be located at 6a.

Figure 8 shows a connection diagram of the electric wires for connecting the switch main body A with the load L, power supply, and slave unit B. The wires from load L, power supply, and slave unit B are inserted into the switch body A. Wiring can be easily connected by inserting and connecting into the hole 15. Incidentally, B' is a dedicated slave unit for expansion, and in order to connect to other slave units B, electric wire insertion holes 15' are provided for input and output, respectively.

〔Effect of the invention〕

As described above, the present invention includes a drive circuit that outputs an operation signal when an operation switch is operated, and a switching element that turns on and off the load according to the signal from the drive circuit, and a relay contact that normally supplies power to the load. An electronic circuit section consisting of a hybrid contact circuit, etc. is housed within the body of the switch, and a terminal board for supplying power to the electronic circuit section, a load, a terminal board for sending power to this load, and a terminal board for supplying power to the load are connected in parallel with the operating switch. In an electronic switch in which a terminal board for sending data to a connected slave device for external operation is housed inside the device, an insertion hole is drilled in the pattern of a printed circuit board on which a hybrid contact circuit of the electronic circuit section is mounted, and this printed circuit board is installed. Since each terminal board and the pattern are electrically connected by inserting key points of each terminal board into the insertion holes of Compared to the conventional method, each terminal board is inserted into the insertion hole of the printed circuit board of the hybrid contact circuit in the electronic circuit section, and each terminal board is electrically connected to the pattern. It can be easily connected to the electronic circuit section via a printed circuit board or pattern, so
This has the effect of improving assembly efficiency. In addition, the terminal board is arranged under the printed circuit board so as to correspond to the insertion hole, and the connection piece protruding above the terminal board is inserted into the insertion hole of the printed circuit board, and the connection piece and pattern are soldered to connect electrically. Since the terminal board is connected to the bottom surface of the printed circuit board, it can be mounted so that the upper part of the terminal board is in contact with the bottom surface of the printed circuit board, and the terminal board can be positioned and mounted at a predetermined position relative to the printed circuit board. Since the terminal cover is placed on the terminal cover and the terminal cover is attached with mounting screws to the container housing the terminal board, the printed circuit board can be held between the terminal cover and the container, and the printed circuit board does not move. This has the effect that the printed circuit board and the terminal board can be fixed in such a manner that the connection between the printed circuit board and the terminal board will not come off.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of the embodiment of the present invention, Figure 2a is a cross-sectional view of the same as above before the electric wire is inserted, Figure 2b is a cross-sectional view of the same as the above after electric wire is inserted, and Figure 2c is the same as the above. Fig. 3 is an exploded perspective view of the main parts of the above, Fig. 4 is a block diagram of the electric circuit of the above, Fig. 5 is a specific circuit diagram of the above, and Fig. 6 shows the installation state of the same. 7 is an exploded perspective view of the same as above, and FIG. 8 is a diagram showing connections of the above. 1 is the device body, 4 to 8 are terminal boards, 47 is a hybrid contact circuit, 49 is a printed circuit board, 50 is a pattern, 51 is an insertion hole, 58 is a drive circuit, A is a switch body, B is a slave device, SW is an operation Switch, L indicates load.

Claims (1)

[Claims] 1 An electronic circuit consisting of a drive circuit that outputs an operation signal when an operation switch is operated, and a hybrid contact circuit that uses a switching element to turn the load on and off according to the signal from the drive circuit, and a relay contact that normally supplies power to the load. The circuit section is housed within the body of the switch, and includes a terminal board for supplying power to the electronic circuit section, a load and a terminal board for supplying power to the load, and a slave unit connected in parallel with the operating switch for external operation. In an electronic switch in which a terminal board for sending data to the terminal board is housed inside the device, an insertion hole is drilled in the pattern of the printed circuit board on which the hybrid contact circuit of the electronic circuit section is mounted, and a hole corresponding to the insertion hole is formed under the printed circuit board. Arrange the terminal board as shown above, insert the connecting piece protruding above the terminal board into the insertion hole, electrically connect the connecting piece and the pattern by soldering, and place the terminal cover on the printed circuit board. The terminal structure of an electronic switch consists of attaching a terminal cover using mounting screws to a body housing the above-mentioned terminal board.