JP2890549B2 - Electromagnetic relay - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electromagnetic relay, and more particularly, to an electromagnetic relay having a silencing structure.

[Conventional technology]

Conventionally, this type of electromagnetic relay has a structure to which an accessory mechanism for reducing the speed of the armature is added in order to reduce the collision noise between the contacts and the collision between the armature and the core generated when the electromagnetic relay is driven.

For example, a cushioning material for reducing the impact between the armature and the core, a dashpot connected to a movable contact spring, and the like are prepared.

[Problems to be solved by the invention]

Since the above-described conventional electromagnetic relay, the cushioning material, and the dashpot are provided, the operating speed of the armature and the movable contact is reduced, and a corresponding silencing function can be realized. However, on the contrary, when the electrical contact load is switched on or off, the operating speed is slowed down, and the arc between the contacts is significantly increased. Therefore, there is a drawback that the wear of the contact is increased and the life is greatly reduced.

An object of the present invention is to provide an electromagnetic relay that realizes a silencing function while suppressing the consumption of such contacts.

[Means for solving the problem]

An electromagnetic relay according to the present invention includes an electromagnetic relay block having a lead terminal protruding from a lower surface of a pedestal to which a contact opening / closing mechanism is attached, and a plurality of external terminals electrically connected to the lead terminal of the electromagnetic relay block. A connecting portion made of a formed thin plate electric conductor and first and second fixing portions for fixing the connecting portion.
A buffer spring member made of a second insulating member, an insulator engaged with the buffer spring member by penetrating the plurality of external terminals forming the buffer spring member, and an electromagnetic relay engaged with the insulator; A block, and a resin-sealable case in which the buffer spring member is mounted, wherein the first insulating member is formed of a thin plate, and a lower surface of the pedestal is brought into contact with an upper surface of the first insulating member. With
The lower surface of the second insulating member and the upper surface of the insulator are mounted in contact with each other.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded view of an electromagnetic relay showing an embodiment of the present invention.

As shown in FIG. 1, the present embodiment absorbs mechanical vibration transmitted from a basic electromagnetic relay block 1 and lead-out terminals 10A and 10B of the electromagnetic relay block 1 and a pedestal 7 in a case 4. It has a buffer spring member 2 to cut off, an insulator 3 for blocking internal sound directly radiated from the electromagnetic relay block 1, and a sealing material (not shown).

The electromagnetic relay block 1 of the electromagnetic relay has a coil 5 wound around a spool 6 and a mechanism for opening and closing an electric contact by an electromagnetic force on a pedestal 7. , 10B and the electrical lead-out terminal of the movable contact and the lead-out terminal of the coil protrude. On the other hand, the buffer spring member 2 can be independently electrically connected to the lead terminals 10A and 10B of the electromagnetic relay block 1 through the holes 11A and 11b, respectively, and has an external terminal 12. That is, the lead-out terminal 10A is a hole of a connection portion (spring portion) made of an electric conductor provided on the buffer spring member 2.
At 11 A, it is electrically connected to the external terminal 12 by soldering or caulking or the like. Similarly, the lead-out terminal 10B is connected to the hole 11B, and is connected to the external terminal 12. In addition, the movable contact lead-out terminal and the coil terminal of the electromagnetic relay block 1 are connected to the connection part of the spring member 2 in the same manner, and are also connected to the external terminal 12.

Further, the above-mentioned connecting portion (spring portion) constituting the buffer spring member 2 of this embodiment is mechanically fixed by insulating members 8 and 9, and corresponds to the lead terminals 10A and 10B of the electromagnetic relay block 1. Holes 11A and 11B at connection portions electrically independent from each other.

Further, the insulator 3 in the present embodiment has a hole 13 penetrating through the plurality of external terminals 12 independently. Therefore, the electromagnetic relay block 1 and the buffer spring member 2
After assembling the upper and lower parts with the insulator 3, the case 4
Is mounted, it is possible to prevent inflow when fixing with the sealant from the insulator 3 side. The case 4 has a sealing function and a function of shielding airborne sound generated from the electromagnetic relay block 1.

According to this embodiment, the energy generated from the electromagnetic relay block 1, for example, the mechanical vibration energy transmitted from the lead-out terminal 10 is transmitted to the hole 11A, but forms the vicinity of the hole 11A before being transmitted to the external terminal 12. The vibration energy is extremely attenuated by the thin buffer spring member 2. Since the vibration energy consumed by the buffer spring member 2 is hardly transferred to the thin plate insulating member 8 and the insulating member 9, the bottom surface of the electrode relay block 1, the upper surface of the thin plate insulating member 8, and the lower surface of the insulating member 9 The mounting and sealing can be performed in a state of being in contact with the upper surface of the insulator 3.

〔The invention's effect〕

As described above, the electromagnetic relay of the present invention, by using the buffer spring member, can largely shield the vibration transmission energy and the internal radiation sound generated in the electromagnetic relay block, without impairing the original performance, This has the effect of suppressing wear of the contacts and reducing the noise generated after mounting the printed circuit board thereon.

[Brief description of the drawings]

FIG. 1 is an exploded view of an electromagnetic relay showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Electromagnetic relay block, 2 ... Buffer spring member, 3 ... Insulator, 4 ... Case, 5 ... Coil, 6 ... Spool, 7 ... Pedestal, 8 ... Thin plate insulating member, 9 ... Insulation Member, 10A, 10B ... Lead-out terminal, 11A, 11B, 1
3 ... holes, 12 ... external terminals.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01H 50/04

Claims (3)

(57) [Claims] 1. An electromagnetic relay block having a lead terminal protruding from a lower surface of a pedestal to which a contact opening / closing mechanism is attached, and a plurality of external terminals electrically connected to the lead terminal of the electromagnetic relay block. The buffer is formed by penetrating a connection portion formed of a thin plate of electrical conductor and a buffer spring member including first and second insulating members for fixing the connection portion, and the plurality of external terminals forming the buffer spring member. An insulator engaged with a spring member, and a resin sealable case engaged with the insulator and mounting the electromagnetic relay block and the buffer spring member therein;
Is formed of a thin plate, and the lower surface of the pedestal and the first
An electromagnetic relay, wherein the upper surface of the insulating member is brought into contact with the upper surface of the insulator while the lower surface of the second insulating member is brought into contact with the upper surface of the insulator. 2. The electromagnetic relay according to claim 1, wherein a connection portion of said buffer spring member made of said thin plate electrical conductor is mechanically fixed by said first and second insulating members. And an electromagnetic relay. 3. The electromagnetic relay according to claim 1, wherein the connection portion of the buffer spring member made of the thin plate electrical conductor has a hole through which the lead-out terminal of the electromagnetic relay block is guided. And an electromagnetic relay.