JP2556597Y2 - Electromagnetic relay - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a hinge type electromagnetic relay having a movable contact.

[0002]

2. Description of the Related Art Conventionally, a Hinge type electromagnetic relay 12 as shown in FIG. 8 is known. The electromagnetic relay 12 includes a magnet yoke 16 erected on the substrate 14, and a coil 28 containing an iron core 27 (only the upper part 27 a of the iron core is shown in FIG. 8) erected alongside the magnet yoke 16. ,
An armature plate 20 rotatably attached to the tip of the magnet yoke 16 is provided.

[0005] Protrusions 18a and 18b are formed at both ends of the end of the magnet yoke 16. Notches 20a, 2 are provided at both ends of a base end of the armature plate 20.
0b is formed. By fitting the convex portions 18a, 18b into the notches 20a, 20b, the armature plate 2 is attached to the tip of the magnet yoke 16.
0 is rotatably mounted. The tip of the armature plate 20 is constantly urged upward by a coil spring B. 26 is an upper frame of a coil bobbin frame around which a coil 28 is wound.

[0004] A buffer spring 24 is attached to the armature plate 20. A movable contact 24 is provided on the upper and lower surfaces of the tip of the buffer spring 24.
a and 24b are formed.

Reference numeral 34 denotes a base wall made of an insulating material. The base wall 34 is provided with a concave portion 20a of the armature plate 20,
The magnet yoke 16 fitted to 20b is fixed by screws to the other side wall on the side opposite to one side wall. Reference numeral 30 denotes a connection plate attached to one side wall of the base wall 34, a bent plate 32 is connected to the connection plate 30, and a fixed contact 32a is formed on the bent plate 32. 36
Is a support plate attached to the other side wall of the base wall 34, and a fixed contact 36a is formed on the lower surface of the tip.

With the above configuration, when the coil 28 is not excited, the armature plate 20 has its tip urged upward by the coil spring B, so that the upper movable contact 24a at the tip of the buffer spring 24 is moved upward. And is in contact with the upper fixed contact 36a.

When the coil 28 is excited, the armature plate 20 is attracted to the upper portion 27a of the iron core 27 against the upward force of the coil spring B. The movable contact 24b is displaced downward and comes into contact with the lower fixed contact 32a.

However, in such a conventional configuration, since the projections 18a, 18b and the notches 20a, 20b form a fitting mechanism, lateral play occurs on the armature plate 20 due to its structure. Was a fatal drawback.

Due to the lateral play of the armature plate 20, a movable contact 24 provided at the tip of a buffer spring 24 attached to the armature plate 20
a, 24b have fixed contacts 36a, 32 facing them.
In contrast to FIG. 9A, as shown in FIG. 9, there is a problem that the contact points of the respective contacts do not line up and swing to the right or left, resulting in a poor contact state.

A structure in which the armature plate 20 and the buffer spring 24 are integrally formed and the function of the buffer spring 24 is also used only by the armature plate 20 is also known as an inexpensive electromagnetic relay having a relatively small current. However, it has the same disadvantages as described above.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a simple structure that suppresses the lateral runout of an armature plate and a buffer spring, thereby enabling a movable contact and a fixed contact. It is an object of the present invention to provide a novel electromagnetic relay in which the contact points with the contact are made straight and the contact state is extremely good.

[0012]

In order to solve the above-mentioned problems, the present invention provides a substrate, a magnet yoke erected on the substrate, and a coil bobbin frame containing an iron core erected alongside the magnet yoke. A coil wound around the armature plate, an armature plate rotatably attached to the tip of the magnet yoke, located above the iron core and constantly urged upward, and a buffer spring attached to the armature plate. An electromagnetic relay having a movable contact provided on both surfaces of the tip end of the buffer spring and a fixed contact provided via the substrate corresponding to the movable contact, provided on the upper frame of the coil bobbin frame. The buffer spring restrains the buffer spring from running laterally.

[0013] The above-mentioned lateral run-out restraint means includes a base end having a locking hole, an arm extending from the base end, and an upper portion protruding from both sides of the arm in proximity to both side surfaces of the buffer spring. The horizontal run-out restraining means is locked and fixed between the upper surface of the upper frame of the coil bobbin frame and the upper part of the iron core pressed into the coil bobbin frame via the locking hole. It is configured so that

[0014] The above-mentioned lateral run-out restraining means may be constituted by a pair of restraining members erected on the upper surface of the upper frame of the coil bobbin frame close to both side surfaces of the buffer spring.

The above-mentioned lateral run-out restraint means is a single stop member provided on the upper surface of the upper frame of the coil bobbin frame in the vicinity of both side surfaces of the buffer spring, and is provided at a stop hole formed in the buffer spring. It is also possible to stop the buffer spring from laterally oscillating by inserting the stopping member vertically movably.

The present invention is also applicable to an electromagnetic relay in which an armature plate and a buffer spring are integrally formed, and the function of a buffer spring is also used only with the armature plate.

[0017]

According to the present invention, the armature plate and the buffer spring do not swing right and left in the stationary state and in the operating state, because the movement in the lateral direction is restricted by the restraining member of the lateral vibration restraining means. The contact points between the contacts are straight, and the contact state is extremely good.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Note that the same or similar members as those of the conventional electromagnetic relay shown in FIGS. 8 and 9 are denoted by the same reference numerals.

In FIG. 1, reference numeral 44 denotes an electromagnetic relay according to the present invention, the basic configuration of which is the same as that of the conventional electromagnetic relay 12 shown in FIG. That is, the electromagnetic relay 44 is a coil including a magnet yoke 16 erected on the substrate 14 and an iron core 27 erected alongside the magnet yoke 16 (only the upper part 27a of the iron core is shown in FIG. 1). 28
And an armature plate 20 rotatably attached to the tip of the magnet yoke 16.

Projections 18a and 18b are formed at both ends of the end of the magnet yoke 16. Notches 20a, 2 are provided at both ends of a base end of the armature plate 20.
0b is formed. By fitting the convex portions 18a, 18b into the notches 20a, 20b, the armature plate 2 is attached to the tip of the magnet yoke 16.
0 is rotatably mounted. The tip of the armature plate 20 is constantly urged upward by a coil spring B. 26 is an upper frame of a coil bobbin frame around which a coil 28 is wound.

A buffer spring 24 is attached to the armature plate 20. A movable contact 24 is provided on the upper and lower surfaces of the tip of the buffer spring 24.
a and 24b are formed.

Reference numeral 34 denotes a base wall made of an insulating material. The base wall 34 is provided with a concave portion 20a of the armature plate 20,
The magnet yoke 16 fitted to 20b is fixed by screws to the other side wall on the side opposite to one side wall. Reference numeral 30 denotes a connection plate attached to one side wall of the base wall 34, a bent plate 32 is connected to the connection plate 30, and a fixed contact 32a is formed on the bent plate 32. 36
Is a support plate attached to the other side wall of the base wall 34, and a fixed contact 36a is formed on the lower surface of the tip.

Reference numeral 46 designates a lateral vibration restraining means provided on the upper frame 26 of the coil bobbin frame. The lateral vibration restraining means 46 includes a base 48 having a locking hole 50 and the base 4.
8 and a pair of stopping members 52, 52 protruding upward from both sides of the arm portion 51 in proximity to both side surfaces of the buffer spring (FIG. 4). .

The lateral vibration restraining means 46 is locked and fixed between the upper surface of the upper frame 26 of the coil bobbin frame and the upper portion 27a of the iron core 27 press-fitted into the coil bobbin frame via the locking hole 50. (FIGS. 2 and 3). The iron core 27 penetrates through the coil bobbin frame and is caulked or screwed on the back side of the substrate 14 so that it does not move.

As a material of the lateral vibration restraining means 46, for example, a non-magnetic brass material may be used, but a heat-resistant resin material may also be used.

With the above configuration, when the coil 28 is not excited, the armature plate 20 has its tip urged upward by the coil spring B, so that the upper movable contact 24a at the tip of the buffer spring 24 is And is in contact with the upper fixed contact 36a.

When the coil 28 is excited, the armature plate 20 is attracted to the upper portion 27a of the iron core 27 against the upward force of the coil spring B. The movable contact 24b is displaced downward and comes into contact with the lower fixed contact 32a.

The horizontal movement of the buffer spring 24 is restricted by the restraining members 52, 52 of the horizontal swing restraining means 46 in both the stationary state and the operating state shown in FIG. The contact points between the respective contacts are in a straight line, and the contact state is extremely good.

The lateral vibration suppressing means 46 only has to perform the function of restricting the lateral vibration of the buffer spring 24, and various modes can be considered in addition to the above embodiment.

For example, as shown in FIG. 5, a pair of stopping members 54, 54 are erected on the upper surface of the upper frame 26 of the coil bobbin frame in the vicinity of both side surfaces of the buffer spring 24, and the lateral run-out of the buffer spring 24 is reduced. Can be stopped.

As shown in FIG. 6, the upper frame 2 of the coil bobbin frame located below the buffer spring 24
6, one stop member 54 is erected on the upper surface, while a stop hole 56 is formed in the buffer spring at a position corresponding to the stop member 54, and the stop member 54 can be moved up and down in the stop hole 56. Through the buffer spring 2
4 can be prevented.

In the case of the examples shown in FIGS. 5 and 6, the stopping member 54 may be provided separately on the upper surface of the upper frame 26 of the coil bobbin frame, or may be directly erected on the upper surface of the upper frame. it can. When the coil bobbin frame 26 is made of a heat-resistant resin material, the coil bobbin frame and the restraining member can be easily manufactured by integrally molding the same with the same resin material.

If the restraining members 52 and 54 are configured to have flexibility, there is an advantage that it is easy to perform the point adjustment for restraining.

The lateral deflection dimension increases as the distance between the fitting point of the magnet yoke 16 and the armature plate 20 as a fulcrum and the contact increases, so that the present invention is more effective.

In the above description, the armature plate 20
Although the configuration in which the buffer spring 24 is mounted on the buffer spring 24 has been described, it is not always necessary to provide the buffer spring 24 separately, and the armature plate 20 and the buffer spring 24 are integrally formed, and the buffer spring 24 is formed only by the armature plate 20. It is also possible to adopt a configuration in which functions are also used.

[0036]

As described above, according to the present invention, the armature plate and the buffer spring are prevented from swaying and the contact points of the contacts are prevented from being displaced. Since it is on the center line, it has a great effect of contributing to an increase in the durability of the contact.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a main part of the present invention.

FIG. 3 is a longitudinal sectional view of FIG. 2;

FIG. 4 is a perspective view showing a pinch of a lateral vibration restraining means.

FIG. 5 is a perspective view of a main part of another embodiment of the present invention.

FIG. 6 is a perspective view of a main part of another embodiment of the present invention.

FIG. 7 is an explanatory diagram showing an example of a contact state of each contact of the electromagnetic relay of the present invention.

FIG. 8 is an overall perspective view showing an example of a conventional electromagnetic relay.

FIG. 9 is an explanatory diagram showing an example of a contact state of each contact of a conventional electromagnetic relay.

[Explanation of symbols]

 12, 44 Electromagnetic relay 14 Substrate 16 Magnet yoke 20 Armature plate 24 Buffer spring 24a Movable contact 26 Upper frame of coil bobbin frame 27 Iron core 27a Iron core upper part 28 Coil 32a, 36a Fixed contact 46 Lateral run-out suppressing means 48 Base 50 Lock hole 51 Arm Part 52, 54 Restriction member 56 Restriction hole

Claims (4)

(57) [Scope of request for utility model registration] 1. A substrate, a magnet yoke erected on the substrate, a coil wound on a coil bobbin frame containing an iron core erected alongside the magnet yoke, and rotatable around a tip of the magnet yoke. An armature plate attached to the core and constantly urged upwardly, a buffer spring attached to the armature plate, and movable contacts provided on both surfaces of the tip end of the buffer spring, An electromagnetic relay having a fixed contact provided through the substrate corresponding to the movable contact, and suppressing a lateral vibration of the buffer spring by a lateral vibration suppressing means provided on an upper frame of the coil bobbin frame.
A lateral end portion having a locking hole.
An arm extending from the base end;
From both sides of the arm so that they are close to both sides of the ring
And a pair of stop members erected upward.
The stopping means is provided between the upper surface of the upper frame of the coil bobbin frame and the coil bobbin.
Between the upper part of the iron core press-fitted into the frame and the locking hole
An electromagnetic relay characterized by being locked and fixed . 2. A substrate, a magnet yoke erected on the substrate, a coil wound on a coil bobbin frame containing an iron core erected alongside the magnet yoke, and rotatable around the tip of the magnet yoke. An armature plate attached to the core and constantly urged upwardly, a buffer spring attached to the armature plate, and movable contacts provided on both surfaces of the tip end of the buffer spring, An electromagnetic relay having a fixed contact provided through the substrate corresponding to the movable contact, and suppressing a lateral vibration of the buffer spring by a lateral vibration suppressing means provided on an upper frame of the coil bobbin frame.
And the side-run-out restraint means is provided with the buffer spring.
One of the coils vertically set on the upper surface of the upper frame of the coil bobbin frame
A stopping member, a stopping member formed in the buffer spring.
By inserting the stop member up and down so that it can move up and down
An electromagnetic relay for restraining the buffer spring from running out. 3. A substrate, a magnet yoke erected on the substrate, a coil wound on a coil bobbin frame containing an iron core erected alongside the magnet yoke, and rotatable around the tip of the magnet yoke. , An armature plate positioned above the iron core and constantly urged upward, movable contacts provided on both ends of the armature plate, and via the substrate corresponding to the movable contacts. and a fixed contact provided Te, the electromagnetic relay der to restrain the deflection side of the armature plate by the lateral deflection restraining means provided in the upper frame of the bobbin frame
The means for restraining the lateral runout includes a base end having a locking hole;
An arm extending from a base end, the armature play;
From both sides of the arm so that they are close to both sides of the arm
And a pair of stopping members erected on the
Means for mounting the upper surface of the upper surface of the coil bobbin frame and the coil bobbin frame
Between the upper part of the iron core press-fitted through the locking hole
An electromagnetic relay characterized by being fixed . 4. A substrate, a magnet yoke erected on the substrate, a coil wound on a coil bobbin frame containing an iron core erected alongside the magnet yoke, and rotatable around the tip of the magnet yoke. , An armature plate positioned above the iron core and constantly urged upward, movable contacts provided on both ends of the armature plate, and via the substrate corresponding to the movable contacts. and a fixed contact provided Te, the electromagnetic relay der to restrain the deflection side of the armature plate by the lateral deflection restraining means provided in the upper frame of the bobbin frame
And the means for restraining the lateral movement is provided below the armature plate.
One of the coil bobbin frames
A stop member, which is provided on the armature plate.
By inserting the stop member up and down so that it can move up and down
An electromagnetic relay, wherein the armature plate is restrained from swaying .