JP2007087828A - Hybrid relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a hybrid relay having a compact structure. <P>SOLUTION: In this hybrid relay 1 equipped with a mechanical switch 3 and a semiconductor switch 4, components 5-11 in the inside of the mechanical switch 3 and the semiconductor switch 4 are mounted on a printed circuit board 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hybrid relay including a mechanical switch and a semiconductor switch.

  2. Description of the Related Art Conventionally, as a lighting fixture that supplies current to a lighting load or the like by inverter control, one that has a large-capacity smoothing capacitor for converting an AC voltage into a DC voltage is known. In this type of lighting fixture, a large inrush current flows through the smoothing capacitor when starting to supply current to the lighting load and lighting it. Therefore, when a switch that closes the circuit is turned on, a large inrush current also flows through the switch. Become. Furthermore, when current supply is started to light up a plurality of lighting loads with one switch, a larger inrush current flows.

  Here, the contact material of the mechanical relay used as this switch has a tendency that the welding resistance is lowered in accordance with the recent Cd (cadmium) less. Therefore, conventionally, a hybrid relay in which a semiconductor switch (triac) is added in parallel to the power supply to an existing mechanical switch (mechanical relay) has been proposed as a countermeasure against contact welding due to an inrush current during lighting. (For example, Patent Documents 1 to 3).

In the conventional hybrid relay, the movable contact of the mechanical switch is driven by the magnetic attraction force of the electromagnet, while the phototriac is connected to the energization path of the triac gate current to drive the phototriac. A light emitting diode is provided. When starting to supply current to the illumination load, first, the light emitting diode is caused to emit light to make the phototriac conductive, and the gate current from the AC power source is supplied to the triac gate to make the triac conductive. And after making a semiconductor switch into a conduction | electrical_connection state in this way and starting an electric current supply from a power supply to illumination load, a mechanical switch is made into a conduction | electrical_connection state. That is, according to such a hybrid relay, an inrush current flowing from the power source to the lighting load is caused to flow to the semiconductor switch, thereby avoiding a large inrush current from flowing to the mechanical switch. It is possible to suppress the life reduction due to.
JP 11-238441 A JP 11-238442 A JP-A-11-219645

  However, since the conventional hybrid relay includes both a mechanical switch and a semiconductor switch, the apparatus configuration is increased in size and the number of parts is increased as compared with the case where the mechanical switch is configured only by the mechanical switch, and the manufacturing cost is increased. There was a problem that became high.

  Therefore, an object of the present invention is to obtain a hybrid relay having a more compact configuration.

  In the first aspect of the present invention, the movable contact is operated by switching the magnetic attraction force by the exciting current energized to the exciting coil, and the movable contact and the fixed contact are electrically connected. In a hybrid relay comprising in parallel a mechanical switch that switches between a cut-off state and a cut-off state, and a semiconductor switch that switches between a conductive state and a cut-off state by a control current, the internal components of the mechanical switch and the semiconductor switch Are mounted on a printed circuit board.

  The invention according to claim 2 is characterized in that at least one of the movable contact base and the fixed contact of the mechanical switch is fixed on the conductor pattern of the printed circuit board by soldering.

  The invention according to claim 3 is characterized in that the conductive pattern of the printed circuit board is plated to be used as a fixed contact of the mechanical switch.

  According to a fourth aspect of the present invention, the mechanical switch includes a plurality of pairs of movable contacts and fixed contacts, and the plurality of movable contacts are stamped and formed from the same thin metal plate.

  The invention according to claim 5 is characterized in that the winding of the exciting coil is fixed to a conductor pattern on a printed circuit board.

  The invention according to claim 6 is characterized in that the exciting coil is fixed on the printed board by soldering, and the winding of the exciting coil is fixed to the conductor pattern by soldering.

  The invention according to claim 7 is characterized in that the printed circuit board is a double-sided mounting board.

  According to an eighth aspect of the present invention, the semiconductor switch includes a triac, and the triac is bare-mounted on the printed circuit board.

  In the invention of claim 9, when a through hole is formed in the output terminal portion of the hybrid relay and the output terminal portion is externally connected using solder, the through hole is filled with solder. It is characterized by.

  According to the first aspect of the present invention, instead of mounting the assembly as a mechanical switch on the printed circuit board, the internal components of the mechanical switch are mounted directly on the printed circuit board. The hybrid relay can be configured more compactly and the manufacturing cost can be reduced because the dedicated board used for assembling the type switch is not required or the casing can be simplified.

  According to the invention of claim 2, since the base of the fixed contact or the movable contact is fixed on the conductor pattern of the printed circuit board by soldering, it is not necessary to form an insertion terminal or the like at each contact, and the manufacture of the contact In addition, the assembly can be performed more easily.

  According to the third aspect of the present invention, the number of parts of the mechanical switch can be reduced and the manufacturing cost can be reduced as much as it is not necessary to attach a separate fixed contact.

  According to the invention of claim 4, since the plurality of movable contacts are stamped and formed from the same thin metal plate, the movable contacts can be manufactured more easily and more quickly, and the manufacturing cost can be reduced.

  According to the invention of claim 5, since it is not necessary to provide a coil terminal or the like for connecting the winding of the exciting coil to the conductor pattern, the hybrid relay can be configured more compactly, and the manufacturing cost can be reduced. Can do.

  According to the invention of claim 6, since the fixing of the exciting coil on the printed circuit board and the fixing of the winding of the exciting coil to the conductor pattern can be performed simultaneously, the assembling property is improved and the throughput is improved. There is an advantage of doing.

  According to the seventh aspect of the present invention, the printed circuit board can be made more compact as much as the double-sided mounting board, and the hybrid relay can be further miniaturized.

  According to the eighth aspect of the present invention, since the triac is bare-mounted, the semiconductor switch, and thus the hybrid relay can be further reduced in size.

  According to the ninth aspect of the present invention, the heat dissipation in the output terminal portion can be improved and the temperature rise can be suppressed by the amount of the through hole filled with solder.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  (First Embodiment) FIG. 1 is a perspective view of a hybrid relay according to this embodiment, FIG. 2 is an exploded perspective view of the hybrid relay, and FIG. 3 is an explanatory view showing the operation of a mechanical switch included in the hybrid relay. It is.

  The hybrid relay 1 according to the present embodiment is obtained by mounting a mechanical switch 3 and a semiconductor switch 4 on a printed circuit board 2.

  In this hybrid relay 1, the mechanical switch 3 is switched between opening and closing by an exciting current flowing in the exciting coil 5, while in the semiconductor switch 4, a phototriac (not shown) is provided in the energizing path of a gate current of a built-in triac (not shown). In addition, a light emitting diode (not shown) for driving the phototriac is provided, and when the current supply to the lighting load or the like is started, first, the light emitting diode is caused to emit light to perform the phototriac. A gate current from an AC power supply is caused to flow through the gate of the TRIAC, the TRIAC is brought into a continuity state, current supply from the power source to the lighting load is started, and then the mechanical switch is brought into a continuity state. That is, according to such a hybrid relay, an inrush current flowing from the power source to the lighting load is caused to flow to the semiconductor switch, thereby avoiding a large inrush current from flowing to the mechanical switch. It is possible to suppress the life reduction due to.

  The mechanical switch 3 drives the movable body 6 by the magnetic attractive force generated by the exciting coil 5 and operates the movable contact 7 by the movable body 6, that is, the contact state between the movable contact 7 and the fixed contact 8, that is, The open / close state of the mechanical switch 3 is switched.

  Specifically, in the shut-off state (open state) shown in FIG. 3A, the exciting current is not supplied to the winding 5a of the exciting coil 5, and the movable iron core 6a and the supporting iron core 5c of the movable body 6 are fixed. A magnetic circuit is formed by the iron cores 5b and 5d, and the movable body 6 is held in such a posture that the movable frame 6b is tilted upward. Therefore, in this state, the movable contact 7 is not pushed down by the movable frame 6b and is held in a posture separated from the fixed contact 8 (contact portion 8a) by the elastic force (biasing force) of the movable contact 7.

  On the other hand, in the conductive state (closed state) shown in FIG. 3B, an exciting current is supplied to the winding 5a to generate a magnetic field, and the magnetic circuit is formed by the movable iron core 6a, the supporting iron core 5c, and the fixed iron cores 5b and 5e. And the movable body 6 is held in an inclined posture so that the movable frame 6b faces downward. Therefore, in this state, the movable contact 7 (the front end portion thereof) is pushed down by the movable frame 6b, so that the movable contact 7 is held in a posture in contact with the fixed contact 8 (contact portion 8a).

  In the hybrid relay 1 according to this embodiment described above, each component of the mechanical switch 3, that is, the exciting coil 5, the movable body 6, the movable contact 7, the fixed contact 8, the movable contact (auxiliary movable contact) 9, and the fixed contact. The (auxiliary fixed contact) 10 and the coil connection block 11 etc. for electrically connecting the exciting coil 5 to the conductor pattern 12 are not once assembled as a single mechanical switch 3, but are hybrid relays together with the semiconductor switch 4. 1 is mounted on a printed circuit board 2 as a base of 1 and assembled as a hybrid relay 1. And the area | region in which each said component was mounted is coat | covered with the rectangular box-shaped cover 3a.

  Accordingly, the hybrid relay 1 can be configured more compactly and the manufacturing cost can be reduced because the dedicated board used for assembling the conventional mechanical switch is not required or the casing can be simplified. can do.

  (Second Embodiment) FIG. 4 is a perspective view of a printed circuit board included in a hybrid relay according to this embodiment. The hybrid relay according to the present embodiment includes the same components as the hybrid relay according to the embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In this embodiment, the contact pattern 8a is formed on the front surface (or the back surface) of the printed circuit board 2A, instead of providing the fixed contact point 8a on the terminal and fixing the terminal on the printed circuit board. 12 is soldered and fixed directly.

  On the other hand, with respect to the movable contact 7, the insertion terminal portion 7a is inserted and fixed in the insertion hole 12a formed in the conductor pattern 12 and the printed board 2A.

  The printed circuit board 2A on which the movable contact 7 and the contact part 8a of the fixed contact are mounted can be used in place of the printed circuit board 2 in the hybrid relay 1 according to the first embodiment.

  According to the above embodiment, since the contact portion 8a of the fixed contact is fixed on the conductor pattern 12 of the printed circuit board 2A by soldering, there is no need to use a fixed contact provided with an insertion terminal or the like. The contact can be manufactured and assembled more easily.

  (Third Embodiment) FIG. 5 is a perspective view showing contacts mounted on a printed circuit board included in a hybrid relay according to this embodiment. The hybrid relay according to the present embodiment includes the same components as the hybrid relay according to the embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In the present embodiment, the conductor pattern 12B formed on the printed circuit board 2B is plated, and the conductor pattern 12B itself is used as a fixed contact (contact portion). That is, in this case, the fixed contact (contact portion) is a region A on the surface of the conductor pattern 12B.

  According to the present embodiment described above, the number of parts of the mechanical switch can be reduced and the manufacturing cost can be reduced because it is not necessary to separately attach a fixed contact (contact part).

  (Fourth Embodiment) FIG. 6 is a perspective view showing contacts mounted on a printed circuit board included in a hybrid relay according to this embodiment. In addition, the hybrid relay concerning this embodiment is provided with the component similar to the hybrid relay concerning the said embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In this embodiment, a plurality of movable contacts 7C and 9C are obtained by punching from the same thin metal plate, and these movable contacts 7C and 9C are fixed on the conductor pattern 12C on the printed board 2C.

  The movable contacts 7C and 9C are formed by bending a strip-shaped thin plate at a predetermined angle. In this embodiment, the base portions 7b and 9b are fixed on the surface of the conductor pattern 12C by soldering.

  The movable contact 7C serves as a main contact for switching between the conductive state and the cut-off state of the circuit, while the movable contact 9C is driven together with the movable contact 7C by a movable frame 6b (FIG. 3) and is subjected to a predetermined other. A contact for opening and closing the circuit can be formed, and the operation of the movable contact 7C can be confirmed by the open / closed state of the other circuit.

  According to the above embodiment, since the plurality of movable contacts 7C, 9C are stamped and formed from the same metal thin plate, the movable contacts 7C, 9C can be manufactured more easily and more quickly, and the manufacturing cost can be reduced. Can be reduced.

  In addition, according to the present embodiment, since the base portions 7b and 9b of the movable contacts 7C and 9C are fixed onto the conductor pattern 12C of the printed circuit board 2C by soldering, the movable contacts 7C and 9C are movable because there is no need to provide an insertion terminal or the like. The contacts 7C and 9C can be manufactured and assembled more easily.

  (Fifth Embodiment) FIG. 7 is an enlarged perspective view showing a part of an exciting coil mounted on a printed circuit board included in a hybrid relay according to this embodiment. The hybrid relay according to the present embodiment includes the same components as the hybrid relay according to the embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In the present embodiment, the fixing leg portion (not shown) of the exciting coil 5D is inserted and fixed in the insertion hole (not shown) formed on the printed circuit board 2D, while the lead wire 13 at the end of the winding 5a. Is extended to the contact portion between the leg portion 5f and the conductor pattern 12D, and the end portion of the lead wire 13 is soldered to the conductor pattern 12D, thereby the lead wire 13 and the conductor pattern 12D. Ensuring continuity with. The leg portion 5f is provided with a groove 5g to guide the lead wire 13.

  According to the above-described embodiment, the hybrid relay can be configured more compactly because it is not necessary to provide a coil connection block or the like for connecting the winding 5a of the exciting coil 5 to the conductor pattern 12D. Can be reduced.

  In addition, according to the present embodiment, since the end of the winding 15a is directly connected to the conductor pattern 12D, the coil connection block for electrically connecting the winding 5a to the conductor pattern can be omitted. The hybrid relay can be configured more compactly, and the manufacturing cost can be reduced.

  (Sixth Embodiment) FIG. 8 is an enlarged perspective view showing a part of an exciting coil mounted on a printed circuit board included in a hybrid relay according to this embodiment. In addition, the hybrid relay concerning this embodiment is provided with the component similar to the hybrid relay concerning the said embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In this embodiment, the leg 5h of the exciting coil 5E is inserted into a small hole opened in the conductor pattern 12F on the printed circuit board 2E, and the leg 5h is fixed to the printed circuit board 2E by soldering. The wire 13 is transmitted to the leg portion 5h and extended to the connecting portion between the leg portion 5h and the conductor pattern 12E, and the lead wire 13 is also soldered together with the leg portion 5h. In the present embodiment, the lead wire 13 is wound around the leg portion 5h.

  According to the present embodiment described above, the fixing of the exciting coil 5 onto the printed circuit board 2E and the electrical connection of the winding 5a (lead wire 13) of the exciting coil 5 to the conductor pattern 12F can be simultaneously established. As much as possible, there is an advantage that the assembling property is improved and the throughput is improved.

  Also according to the present embodiment, the hybrid relay can be configured more compactly because the coil connection block for connecting the winding 5a of the exciting coil 5 to the conductor pattern 12E can be omitted, thereby reducing the manufacturing cost. be able to.

  (Seventh Embodiment) FIG. 9 is an exploded perspective view of a hybrid relay according to this embodiment. The hybrid relay according to the present embodiment includes the same components as the hybrid relay according to the embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In the mechanical switch 3F according to this embodiment, the printed board 2F is a double-sided mounting board, and components can be mounted on both the front and back surfaces. Therefore, according to the present embodiment, the printed circuit board 2F and hence the mechanical switch 3F can be configured more compactly, and the hybrid relay can be further downsized.

  (Eighth Embodiment) FIG. 10 is a perspective view of a part of a hybrid relay according to this embodiment. The hybrid relay according to the present embodiment includes the same components as the hybrid relay according to the embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In this embodiment, a semiconductor switch triac (bidirectional thyristor) 4G is bare-mounted on a printed circuit board 2G by wire bonding, solder bonding, thermocompression bonding, or the like, and the mechanical switch and the triac 4G are covered with a casing 14. In addition, the opening 14 a provided in the casing 14 is sealed with a sealing material 15.

  According to the present embodiment described above, since the triac 4G is bare-mounted, the semiconductor switch and thus the hybrid relay can be further reduced in size.

  (Ninth Embodiment) FIG. 11 is a perspective view of a part of a hybrid relay according to this embodiment. The hybrid relay according to the present embodiment includes the same components as the hybrid relay according to the embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In the present embodiment, a protruding portion 19 that protrudes from the side surface of the printed circuit board 2H serving as the base of the hybrid relay is provided as the output terminal portion. In this example, the back surface of the projecting portion 19 is connected straight from the back surface of the printed circuit board 2H, while the surface of the projecting portion 19 is bent to the back surface side at the side edge of the printed circuit board 2H. It is an inclined surface that descends. Then, a series of strip-like conductor patterns 12H that are electrically connected to the printed circuit board 2H side are formed on the front and back surfaces of the protrusions 19, and the front and back surfaces of the protrusions 19 are formed at substantially the center in the width direction of the conductor patterns 12H. A through hole 18 penetrating therethrough is provided. And when fixing the back surface of the protrusion part 19 and the external connection member 16 (conductor pattern 17) by soldering, the through hole 18 is filled with the solder.

  According to the above-described embodiment, the heat dissipation in the protruding portion as the output terminal portion can be improved and the temperature rise can be suppressed by the amount of the through hole 18 filled with solder.

  The preferred embodiment of the present invention has been described above, but the above embodiment is merely shown as an example. That is, the present invention is not limited to the above embodiment, and various modifications can be made.

1 is a perspective view of a hybrid relay according to a first embodiment of the present invention. The disassembled perspective view of the hybrid relay concerning 1st Embodiment of this invention. It is explanatory drawing which shows operation | movement of the mechanical switch contained in the hybrid relay concerning 1st Embodiment of this invention, Comprising: (a) is a interruption | blocking state, (b) is a figure which shows a conduction | electrical_connection state. The perspective view which shows the contact mounted on the printed circuit board contained in the hybrid relay concerning 2nd Embodiment of this invention. The perspective view which shows the contact mounted on the printed circuit board contained in the hybrid relay concerning 3rd Embodiment of this invention. The perspective view which shows the contact mounted on the printed circuit board contained in the hybrid relay concerning 4th Embodiment of this invention. The perspective view which expands and shows a part of exciting coil mounted on the printed circuit board contained in the hybrid relay concerning 5th Embodiment of this invention. The perspective view which expands and shows a part of exciting coil mounted on the printed circuit board contained in the hybrid relay concerning 6th Embodiment of this invention. The disassembled perspective view of the hybrid relay concerning 7th Embodiment of this invention. The partial perspective view of the hybrid relay concerning 8th Embodiment of this invention. The partial perspective view of the hybrid relay concerning 9th Embodiment of this invention.

Explanation of symbols

1 Hybrid relay 2, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H Printed circuit board 3, 3F Mechanical switch 4 Semiconductor switch 4G Triac 5, 5D, 5E Excitation coil 5a Winding 7, 7C, 9, 9C Movable contact 7b, 9b Base 8, 10 Fixed contact 8a Contact (fixed contact)
12, 12C, 12D, 12E, 12F, 12H Conductor pattern 12B Conductor pattern (fixed contact)
13 Lead wire (winding)
18 Through hole 19 Protruding part (output terminal part)

Claims (9)

The movable contact is operated by switching the magnetic attraction force by the exciting current energized to the excitation coil, and the state is switched between a conduction state where the movable contact and the fixed contact are conducted and a cutoff state where the movable contact and the fixed contact are shut off. In a hybrid relay comprising a mechanical switch and a semiconductor switch that switches between a conduction state and a cutoff state by a control current in parallel,
A hybrid relay characterized in that an internal component of a mechanical switch and the semiconductor switch are mounted on a printed circuit board.   The hybrid relay according to claim 1, wherein at least one of a movable contact base and a fixed contact of the mechanical switch is fixed on a conductor pattern of the printed circuit board by soldering.   The hybrid relay according to claim 1, wherein the conductive pattern of the printed circuit board is plated to be used as a fixed contact of the mechanical switch.   2. The hybrid relay according to claim 1, wherein the mechanical switch includes a plurality of pairs of movable contacts and fixed contacts, and the plurality of movable contacts are stamped and formed from the same thin metal plate.   The hybrid relay according to claim 1, wherein the winding of the exciting coil is fixed to a conductor pattern on a printed circuit board.   6. The hybrid relay according to claim 5, wherein the exciting coil is fixed on a printed circuit board by soldering, and the winding of the exciting coil is fixed to the conductor pattern by soldering.   The hybrid relay according to claim 1, wherein the printed board is a double-sided mounting board. The semiconductor switch includes a triac;
The hybrid relay according to claim 1, wherein the triac is bare-mounted on the printed circuit board.   9. The hybrid relay according to claim 1, wherein a through hole is formed in the output terminal portion of the hybrid relay, and when the output terminal portion is externally connected using solder, the through hole is filled with solder. The hybrid relay as described in any one of them.

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