JPH03149723A - Electromagnetic relay - Google Patents

Abstract

PURPOSE:To reduce the generated noise after mounting by shielding the vibration transfer energy and internal radiation noise generated by an electromagnetic relay block with a buffer spring member. CONSTITUTION:The energy generated by an electromagnetic relay block 1, e.g. the mechanical vibration energy transferred from a guide terminal 10, is transferred to a hole 11A, but the signal is extremely attenuated by the buffer spring member 2 of a thin plate constituting the vicinity of the hole 11A before it is transferred to an external terminal 12. The vibration energy consumed by the buffer spring member 2 is rarely transferred to a thin plate insulating member 8 and an insulating member 9, thus the bottom face of the electromagnetic relay block 1 and the upper face of the thin plate insulating member 8, and the lower face of the insulating member 9 and the upper face of an insulator 3 can be mounted and sealed in the contact state. The consumption of the contact is suppressed, and an electromagnetic relay with silencing function can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic relay, and more particularly to an electromagnetic relay having a noise-dampening structure.

[Conventional technology]

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

For example, a cushioning material for reducing shock and a dart pot connected to a movable contact spring are provided between the armature and the core.

[Problem to be solved by the invention]

Since the above-mentioned conventional electromagnetic relay is provided with an M-fold or dash pot, the operating speed of the armature and movable contact is slowed down, and a corresponding noise reduction function can be realized. However, on the other hand, when applying or disconnecting the electrical contact load, the arc between the contacts becomes significantly larger due to the slower operating speed. Therefore, there is a drawback that the contact wear is increased and the life span is significantly reduced.

An object of the present invention is to provide an electromagnetic relay that suppresses the wear and tear of such contacts and realizes a silencing function.

[Means to solve the problem]

The electromagnetic relay of the present invention includes an electromagnetic relay block having a lead-out terminal protruding from the bottom surface of a pedestal to which a contact opening mechanism is attached, and a thin plate electrical conductor electrically connected to the lead-out terminal of the electromagnetic relay block. a buffer spring member formed with a connecting portion and a plurality of external terminals; an insulator that can be engaged with the buffer spring member by penetrating the plurality of external lead-out terminals; It is oval shaped and includes a resin-sealable case.

〔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 one embodiment of the present invention.

As shown in FIG. 1, this embodiment includes a basic electromagnetic relay block l and this electromagnetic relay block
buffer spring member 2 that absorbs and blocks mechanical vibration transmitted from the lead-out terminals 10A, 1013 and the pedestal 7; an insulator 3 and a sealant ( (not shown).

The electromagnetic relay block 1 of such an electromagnetic relay has a spool 6
A coil 5 wound around the coil 5 and an electric contact opening mechanism using electromagnetic force are mounted on a pedestal 7, and from the lower surface of the pedestal 7 is an electrical lead-out terminal 10A of the fixed contact.

10B, the electrical lead-out terminal of the movable contact, and the lead-out terminal of the coil protrude. On the other hand, buffer spring member 2
can be electrically connected to the lead-out terminals 10A and IOB of the electromagnetic relay block 1 through holes 11A and llb, respectively, and has an external terminal 12. That is,
The lead-out terminal 10A is a hole 1 of a connection part (spring member) made of an electrical conductor provided in the buffer spring member 2.
It is electrically connected to the external terminal 12 by soldering or caulking at 1A. Similarly, the lead-out terminal 10
B is connected through the hole 11B and connected to the external terminal 12.

Incidentally, the movable contact output terminal and the coil terminal of the electromagnetic relay block 1 are also intermediately connected to the connecting portion of the spring member 2 and also connected to the external terminal 12 in the same manner.

Further, the buffer spring member 2 of this embodiment is mechanically fixed by insulating members 8 and 9, and holes are formed in mutually electrically independent connection portions corresponding to the lead-out terminals 10A and 10B of the electromagnetic relay block 1. 11A and IIB.

Further, the insulator 3 in this embodiment has holes 13 that independently pass through the plurality of external terminals 12 . Therefore, by assembling the electromagnetic relay block 1, buffer spring member 2, and insulator 3 vertically and then mounting the case 4, it is possible to prevent the inflow of the sealant from the insulator 3 side when the sealant is fixed. This case 4 has a sealing function and a function of shielding air radiated 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 before being transmitted to the external terminal 12, the energy generated in the vicinity of the hole 11A is transmitted. The signal can be extremely attenuated by the buffer spring member 2 made of a thin plate. 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 top surface of the thin plate insulating member 8, and the bottom surface of the insulating member 9 Mounting and sealing can be performed while in contact with the upper surface of the insulator 3.

〔Effect of the invention〕

As explained above, by using the buffer spring member, the electromagnetic relay of the present invention can significantly shield the vibration transmitted energy and internal radiated sound generated in the electromagnetic relay block, without impairing its original performance. This has the effect of suppressing the wear and tear of the contacts and also reducing the noise generated after mounting on a printed board.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded view of an electromagnetic relay showing one embodiment of the present invention.

1... Electromagnetic relay block, 2... Buffer spring member, 3... Insulator, 4... Case, 5
・・・Coil, low ・spool-fu ・pedestal, 8・
...Thin plate insulation member, 9...-Insulation member, IOA, IOB
---Leading terminal, IIA, IIB, 13---One hole, 12
・−External terminal.

Claims (1)

[Scope of Claims] 1. An electromagnetic relay block having lead-out terminals protruding from the bottom surface of a pedestal on which a contact opening/closing mechanism is attached, and a thin plate electrical conductor electrically connected to the lead-out terminals of the electromagnetic relay block. a buffer spring member formed with a connecting portion and a plurality of external terminals; an insulator that can be engaged with the buffer spring member by penetrating the plurality of external lead-out terminals; An electromagnetic relay comprising: a resin-sealable case; 2. The electromagnetic relay according to claim 1, wherein a thin plate of the buffer spring member or a part of the plurality of external lead-out terminals is mechanically fixed by a plurality of substantially plate-shaped insulating materials.