JP2517782Y2 - Electromagnetic relay - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay provided with an electromagnetic coil, a movable contact and a fixed contact, and in particular, a CR composite for eliminating sparks between the contacts or absorbing surges between the coils. The present invention relates to an electromagnetic relay equipped with parts.

[0002]

2. Description of the Related Art Conventionally, in an electromagnetic relay, a resistor and a capacitor connected in series are connected between contacts or between coils in order to eliminate sparks caused by opening / closing of the contacts or to absorb surges generated between coils. Was connected in parallel. This resistor / capacitor is connected to the electromagnetic relay by connecting a single resistor / capacitor / electromagnetic relay on a printed circuit board, or in accordance with a demand for miniaturization of electronic devices, a small resistor and a capacitor are housed in the same housing. It was realized by connecting a chip-type CR component housed in the body to an electromagnetic relay.

[0003]

Certainly, by adopting the above-mentioned chip type CR component, it is possible to realize a certain size reduction as compared with the case where a single resistor and capacitor are connected on a printed circuit board. However, the chip type CR
Wiring for connecting a single resistor and a capacitor is required inside the component, and there has been a certain limit to miniaturization thereof. Further, since the chip-type CR component and the electromagnetic relay are still configured as separate bodies, it is necessary to provide wiring for connecting them when mounting on an electronic device.
Not only does it occupy a large space,
The connection work was also complicated.

The present invention is intended to solve the above-mentioned problems of the prior art, and its purpose is to integrate resistors, capacitors and electromagnetic relays without wiring. Therefore, it is to realize an electromagnetic relay capable of downsizing as a whole and labor saving of connection work.

[0005]

In order to achieve the above object, an electromagnetic relay according to the present invention comprises an electromagnetic coil, a pair of terminals for an electromagnetic coil connected to both ends of the electromagnetic coil, and
An electromagnetic relay comprising a movable contact terminal connected to a movable contact and a fixed contact terminal connected to a fixed contact, between the electromagnetic coil terminals or between the movable contact terminal and the fixed contact terminal. Of at least one of the metallized film capacitor element portion, extraction electrode portions formed at both ends of the metallized film capacitor element portion, a resistance layer formed on at least one of the extraction electrode portion, and the resistance layer The CR composite part having the extraction electrode portion formed on the surface was directly connected.

[0006]

In the CR composite component, since the resistance layer is formed directly on one of the extraction electrodes of the metallized film capacitor element, the capacitor and the resistor can be connected in series without wiring. Therefore, the CR composite component can be miniaturized as much as possible. Since the CR composite component is directly connected between the terminals of the electromagnetic relay, the wiring between the CR composite component and the electromagnetic relay can be omitted.
Therefore, the CR composite component and the electromagnetic relay are integrated without increasing the size and complexity of the electromagnetic relay.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the illustrated embodiment. FIG. 1 is a schematic side view showing an electromagnetic relay according to this embodiment, and FIG. 2 is a bottom view of the electromagnetic relay. As illustrated, the electromagnetic relay 10 according to the present embodiment includes a base 12
A support member 14 having a substantially L-shaped cross section installed on the upper surface 13 of the base 12, an electromagnetic coil 18 attached to a wall 16 of the support member 14, and a hinge 20 at the tip of the support member 14. Movable contact member 2 rotatably coupled via
2 and a first fixed contact terminal 26 fixed so as to penetrate from the upper surface 13 to the bottom surface 24 of the base 12,
The fixed contact terminal 28, the movable contact terminal 30, the electromagnetic coil terminal 32, and the plastic transparent cover 33 that covers the upper surface 13 side of the base portion 12. The movable contact terminal 30 and the movable contact member 22 are connected via a lead wire 35. A movable iron piece 34 is attached to the electromagnetic coil 18 side of the movable contact member 22. A spring mechanism 38 is installed on the upper surface 36 of the support member 14, and a coil spring (not shown) urges the upper end portion 40 of the movable contact member 22 toward the spring mechanism 38.

Therefore, when the electromagnetic coil 18 is not excited, the first movable contact 42 of the movable contact member 22 contacts the first fixed contact 44 of the first fixed contact terminal 26. ing. On the other hand, when the electromagnetic coil 18 is excited via the electromagnetic coil terminal 32, the iron core portion 46
The movable iron piece 34 of the movable contact member 22 is
It is attracted to the iron core portion 46 against the spring force of the spring mechanism 38. As a result, the second movable contact 4 of the movable contact member 22
8 is the second fixed contact 4 of the second fixed contact terminal 28.
Contact 9.

Although only one movable contact member 22 is shown in FIG. 1, another movable contact member 22 having the same structure is actually arranged in parallel in the back side of the drawing. Corresponding to this, as shown in FIG. 2, two first fixed contact terminals 26, two second fixed contact terminals 28, and two movable contact terminals 30 are also arranged in parallel. further,
Two electromagnetic coil terminals 32 are also arranged in parallel, and are connected to both ends of the electromagnetic coil 18 via lead wires 50, 50.

Further, the first fixed contact terminals 26, 26 and the second fixed contact terminal 2 on the bottom surface 24 of the base 12 are provided.
8, 28, between the second fixed contact terminals 28, 28 and the movable contact terminals 30, 30, and the electromagnetic coil terminal 3
A concave portion 51 having a predetermined depth is provided between the second and second portions.
Are formed. A CR composite component 52, in which a capacitor and a resistor are integrated in a serial connection state, is housed in the recess 51.

As shown in FIG. 3, the CR composite component 52 includes a capacitor element portion 54 formed by pressing metalized films after laminating and winding, and the capacitor element portion 5.
4. Extraction electrode portions 56, 56 formed by spraying a metal such as copper, tin, or solder on both ends of 4, and a resistance metal such as aluminum oxide or titanium oxide is sprayed on one of the extraction electrode portions 56, 56. The resistance layer 58 and the extraction electrode portion 56 formed by spraying a metal such as copper, tin, or solder on the surface of the resistance layer 58. Then, the CR composite part 52
The extraction electrode portions 56, 56 located at both ends of the
It functions as an electrode of the R composite component 52.

When the CR composite component 52 is housed in the recess 51, both electrodes 56, 56 of the CR composite component are accommodated.
The CR composite part 52 so that each of the terminals (the first fixed contact terminals 26, 26, the second fixed contact terminals 28, 28, the movable contact terminals 30, 30, the electromagnetic coil terminals 32, 32) is surely brought into contact with each terminal. Is placed. It should be noted that a conductive adhesive, solder, or the like may be used to make the state of electrical contact between the CR composite component 52 and each terminal more reliable. As described above, with the CR composite parts 52 housed in the recesses 51, the recesses 51 are sealed by filling the openings of the recesses 51 with a flame-retardant epoxy resin or the like.

The present invention is not limited to the electromagnetic relay having the above-mentioned structure, and it is essential only that the electromagnetic relay has an electromagnetic coil and contacts, and it is applicable to a large electromagnetic relay having more contacts. It is possible.

[0014]

According to the electromagnetic relay of the present invention, a CR composite component in which a resistance layer is directly formed on at least one extraction electrode of a metallized film capacitor element is directly connected between terminals of the electromagnetic relay. Since it is configured to
Wiring between composite parts and electromagnetic relay can be omitted. Therefore, the CR composite component and the electromagnetic relay are integrated without increasing the size and complexity of the electromagnetic relay, reducing the size of the resistor, the capacitor, and the electromagnetic relay as a whole, and saving the work of assembling them into electronic equipment. Can be realized.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of the present invention.

FIG. 2 is a schematic bottom view showing the above embodiment.

FIG. 3 is a schematic perspective view showing a CR composite component according to the above embodiment.

[Explanation of symbols]

 10 Electromagnetic Relay 18 Electromagnetic Coil 26 First Fixed Contact Terminal 28 Second Fixed Contact Terminal 30 Moving Contact Terminal 32 Electromagnetic Coil Terminal 42 First Moving Contact 44 First Fixed Contact 48 Second Moving Contact 49 Second Fixed contacts 52 CR composite parts 54 Capacitor element part 56 Extraction electrode part 58 Resistance layer

Claims (1)

(57) [Scope of utility model registration request] 1. An electromagnetic coil, a pair of electromagnetic coil terminals connected to both ends of the electromagnetic coil, a movable contact terminal connected to a movable contact, and a fixed contact terminal connected to a fixed contact. And a metallized film capacitor element portion formed on at least one of the electromagnetic coil terminals or between the movable contact terminal and the fixed contact terminal and both ends of the metallized film capacitor element portion. Extraction electrode part, a resistance layer formed on at least one of the extraction electrode part, and extraction formed on the surface of the resistance layer
An electromagnetic relay characterized in that a CR composite component having an electrode portion is directly connected.