JP3465061B2 - Manufacturing method of electromagnetic relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to an electromagnetic relay.How to make
LawIt is about. [0002] 2. Description of the Related Art Conventionally, an example of this type of electromagnetic relay has been applied for in a patent application.
It is disclosed in the specification of JP-A-8-223765. Japanese patent application
The electromagnetic relay disclosed in the specification of US Pat.
An armature made of an electromagnetic soft iron plate has an
A protrusion is formed by boss processing, and the protrusion is a movable spring.
Armature and movable spring
Combined with the body, magnetize the armature against the movable spring
The movable contact and the fixed contact are brought into contact by air adsorption, or
The movable contact and fixed contact are separated by the spring force of the dynamic spring
In this way, the contacts are electrically interrupted.
You. [0003] Japanese Patent Laid-Open No. 5-1825 / 19937Opened in No. 5
The electromagnetic relay shown has a fixed contact spring with a bobbin (spoof).
The fixed contact spring is inserted into the groove of
The fixed contact spring is inserted into the bobbin (spoon)
). Further, Japanese Utility Model Application Laid-Open No. 59-47948 discloses
The disclosed electromagnetic relay connects the terminal plate to one end of the bobbin jaw.
Driving and fixing in a bridge shape on both sides
The tip of the contact spring that works with the armature of the electromagnet.
It has a structure facing the fixed contact portion. FIG. 5 shows a conventional electromagnetic relay as a whole.
FIG. An electromagnetic relay according to a conventional example shown in FIG.
Is a spool 21 around which the coil 20 is wound,
Empty formed at the center of the coil 20 wound around
An iron core 22 penetrating between, and fixed to a lower end of the iron core 22
An L-shaped yoke 23 and a boss 24 on the back of the yoke 23
Hinge spring 25 that is held and supported by hinge spring 25
And comes into contact with one end surface of the yoke 23, and the other end
And an armature 26 facing the upper end of the armature 2. The hinge spring 25 includes a hinge portion and a movable spring portion.
25a, and at the tip of the movable spring portion 25a,
A movable contact 27 is provided. Also, the movable contact 27
A pair of fixed contact springs 28, 28 facing up and down
Is provided with a pair of fixed contacts 29, 29,
The movable contact 27 is fixed to the fixed contacts 29, 29 by a hinge spring.
Selective contact by the action of 25
You. [0007] [Problems to be solved by the invention]
The electromagnetic relay disclosed in the specification of JP-A-8-223765,
Kaihei 5-182575Electromagnetic relay disclosed in the gazette,
An electromagnetic relay disclosed in Japanese Utility Model Laid-Open No. 59-47948.
The electromagnetic relay according to the prior art shown in FIG.
The engagement position between the mature and the movable contact spring cannot be changed.
Also, the tip of the fixed contact spring on the make side can be restrained.
Therefore, an electromagnetic relay with the same structure must be
For inrush current control such as load of a sensor and motor load
For controlling inductance such as load and solenoid load,
Contact life characteristics suitable for load applications can be provided.
There is a problem that can not be. An object of the present invention is to provide a contact suitable for a load application.
Electromagnetic relay with lifetime characteristicsManufacturing methodTo provide
And there. [0009] In order to achieve the above object,
The electromagnetic relay according to the present inventionThe manufacturing method ofspool
, Armature, yoke, hinge spring, movable contact
A point spring and a fixed contact spring;
A fixed contact paired by the interaction of the spring force and the magnetic force
Electromagnetic relay that electrically connects and disconnects movable contactsManufacturing method
AndThe spool is wound with a coil.
The armature is inserted into the space of the spool.
Was done,For connecting with the movable contact spring
Has protrusions,The yoke is combined with the armature
And forms a magnetic circuit for generating the magnetic force.
And the hinge spring is provided between the armature and the yaw.
The movable contact spring.
Is formed integrally with the hinge spring, and has
With moving contacts,Connect with the armature
A fitting hole for inserting the armature projection into the fitting hole.
It is press-fitted into the hole and connected to the armature,
The fitting hole of the movable contact spring should be
Is set in one of the directions away from the movable contact
AndThe fixed contact spring,Molded into an L-shape,
lower endIs fixed to the spoolStanding up, sideways
A fixed contact is provided at a position extending in the direction
A lateral end of said fixed contact spring.
Crimps one end surface of the movable contact spring in the direction of bending to the spool
To support the entire surface, or press both ends against the spool.
To be selectively constrained by being worn and supported on two sides
The movable contact spring has a fitting hole corresponding to the movable contact.
If it is set in the direction approaching
The lateral end is supported on one side, and the movable contact spring is fitted.
When the hole is set in the direction away from the movable contact
So that the lateral end of the fixed contact spring is supported on two sides.
By using in combination, each can be used according to the application
Provides optimal contact life characteristics. [0010] [0011] [0012] [0013] [0014] [0015] [0016] Next, an embodiment of the present invention will be described.
This will be described with reference to the drawings. FIG. 1 shows an electromagnetic relay according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing an electric appliance, and FIG.
Armature and movable contact spring in such an electromagnetic relay
FIG. 3 is a cross-sectional view showing the relationship between the engagement positions of FIG.
Make-side fixed contact spring in the electromagnetic relay according to the embodiment
FIG. 4 (a) is an exploded perspective view showing a structure for restraining the tip.
(B) is an electromagnetic relay according to an embodiment of the present invention.
Showing the structure that restrains the tip of the fixed contact spring on the make side
FIG. FIG. 1 shows an electromagnetic device according to an embodiment of the present invention.
The relay basically has a spool 1 and an armature.
A, yoke 3, hinge spring 4, movable contact spring 5
And a fixed contact spring 6, and the spring force of the movable contact spring 5
Fixed contact 7 which forms a pair by the interaction of
The contact 8 is electrically interrupted. The spool 1 is coiled around the bobbin 1a.
The coil 9 is wound, and both ends of the coil 9 are pressed into the spool 1.
It is electrically connected to the two fixed coil terminals 10 and 10.
Have been. Therefore, the coil 9 has two coil terminals
Energized by 10,10 to generate magnetic force
ing. The armature 2 is provided with a gap (bore) in the spool 1.
(Inside the bin 1a). Yaw
K3Is-Generates the magnetic force in combination with amateur 2
To form a magnetic circuit. The yoke 3 has a substantially U shape, and has a spool
1 and fixed to the lower surface of the armature 2 and both ends of the armature 2
It is installed facing. The hinge spring 4 is bent and formed into an L-shape.
With a spring property, the protrusion 3a provided on the side surface of the yoke 3
It is fixed, and it rises from the yoke 3 and at the rising part
Armature 2In favor ofArmature 2 with yoke 3
They are arranged at opposing positions. This
The armature 2 and the yoke 3 are connected via a hinge spring 4.
And are magnetically connected. The movable contact spring 5, as shown in FIG.
The movable contact 8 is formed integrally with the spring 4 at the tip.
Have been. A fitting hole is provided on the base side of the movable contact spring 5.
5a is opened, and the protrusion of the armature 2 is inserted into the fitting hole 5a.
The spring 2a is press-fitted and fixed, and the movable contact spring 5 and the armature
2 are integrally connected. Therefore, when the coil 9 is energized, the coil
Armature 2 and yo
A magnetic circuit including the hinge spring 4 and the hinge spring 4
The armature 2 is magnetically attracted to the yoke 3 against the force.
As a result, the movable contact 8 is movable. Further, the movable contact spring 5Armature
Engage with 2Position, Fixed contact 7 and movable contact 8
handIt is configured to be movable in both the near and far directions. More specifically, as shown in FIG.
The moving contact spring 5 and the armature 2 form a pair,
A protrusion 2a on the armature 2 and a fitting on the movable contact spring 5;
A hole 5 a is provided for each of the armatures 2.
Between the projection 2a and the fitting hole 5a of the movable contact spring 5;Engagement position
Is determined when the movable contact spring 5 is bent.Starting pointPosition
Has become. Further, as shown in FIG.
The point spring 5 and the armature 2
The protrusion 2 a of the armature 2 and the fitting hole 5 of the movable contact spring 5
The distances a1 and a2 with respect to a are set differently. More specifically, as shown in FIG.
Of the movable contact spring 5 with the projection 2a of the armature 2
The distance a1 from the hole 5a depends on the armature relative to the other set of contacts 8.
Between the projection 2a of the tuner 2 and the fitting hole 5a of the movable contact spring 5;
It is shorter than the distance a2, and the distances a1, a2
Of the fixed contact spring 6 on the side where the fixed contact 7 is provided.
Are different from each other in the configuration for restraining the ends. still,
In FIG. 2, two sets of armature 2 and movable contact spring 5
They are shown in an integrated fashion. The fixed contact spring 6, as shown in FIG.
The lower end 6a is fitted into the fitting groove 11a of the spool 1.
And the projection 6b is inserted into the fitting groove 11b.
The lower end 6a of the fixed contact spring 6 is fitted to the spool 1
Fixed. The upper end 6c of the fixed contact spring 6 stands upward.
The fixed contact 7 is movable at the place where it rises and extends in the lateral direction.
The point spring 5 is provided to face the movable contact 8. FIG.
In the embodiment shown in FIG. 1, the movable contact 8 of the movable contact spring 5 is sandwiched.
The fixed contact 7 of the fixed contact spring 6 is arranged vertically.
It is not limited to this example. Further, the end of the upper end 6c of the fixed contact spring 6
Part, that is, the end on the side where the fixed contact 7 is providedIs selectively detained
It is designed to be bundled.Specifically, FIG.
As shown in FIG. 4 and FIG.
The fixed contact spring 6 is fixed as shown in FIG.
The end on the side where the contact 7 is provided is in the direction in which the movable contact spring 5 bends.
One end face 6d (in the vertical direction in FIG. 4) is crimped to the spool 1.
It is supported on one side. Or FIG. 4 (b)
The fixed contact spring 6 has a fixed contact 7
The end portions are both end surfaces 6d and 6e in the direction in which the movable contact spring 5 bends.
Is pressed onto the spool 1 and supported on two sides.
You. Further, as shown in FIG.
When one end of the spring 6 on the side where the fixed contact 7 is provided is supported
In this case, as shown in FIG.Movable contact spring 5 and armature
2 is set in a direction to approach the contact 8.
Set,That is, the distance is set to a1. Further, as shown in FIG.
When two ends of the spring 6 on the side where the fixed contact 7 is provided are supported
In this case, as shown in FIG.The engagement position of 5 is
Movable contactSet in the direction away from point 8, ie, distance
a2. In addition, in FIG.
The concave portion 12 for restraining the end of the contact spring 6 has one fixed portion.
Although provided only for the contact spring 6, two fixed contact springs are provided.
You may make it provide for 6 and 6, respectively. The above-mentioned components are not shown in a box.
Is covered by a box-shaped cover, and the opening of the box-shaped cover is
The box cover and base are covered with epoxy resin.
It is designed to be closed. Next, an electromagnetic relay according to an embodiment of the present invention.
Will be described. When the coil 9 is energized,
Armature 2 and yo
A magnetic circuit including the hinge spring 4 and the hinge spring 4
The armature 2 is magnetically attracted to the yoke 3 against the force.
As a result, the movable contact 8 moves. When the movable contact 8 moves, the movable contact 8
The fixed contact 7 which makes contact. In this case, the movable contact spring
The movable contact 8 forms a pair with the fixed contact 7 under the spring force of 5
To make contact, the movable contact 8 is pressed against the fixed contact 7. When the coil 9 is demagnetized, the hinge
The movable contact 8 is pulled from the fixed contact 7 by the spring force of the spring 4.
It is separated and comes into contact with another fixed contact 7. Next, based on the configuration shown in FIG. 2 and FIG.
The following table shows the results of the life test of contacts 7 and 8.
You. In the following table, the combination of a and b is a
1 ・ b1, a1 ・ b2, a2 ・ b1, a2 ・ b2Solid
Constant contact 7, movable contact 8Was subjected to a life test. Here, a1 is an armature as shown in FIG.
The engagement position between the contact 2 and the movable contact spring 5 is shifted toward the contact 8 side.
Is the case where the distance is set to a1, and b1 is shown in FIG.
As shown, the end of the fixed contact spring 6 on the side where the fixed contact 7 is provided.
The one end face 6d in the direction in which the movable contact spring 5 is
This is a case where one surface is supported by pressure bonding to the pool 1. Further, a2 is an armature as shown in FIG.
A) The engagement position between the movable contact spring 5 and
This is the case where the separation is set to a2, and b2 is shown in FIG.
At the end of the fixed contact spring 6 on the side where the fixed contact 7 is provided.
The two end surfaces 6d and 6e in the direction in which the movable contact spring 5 is bent.
This is a case where two surfaces are supported by being pressed against the spool 1. Referring to FIG. 2 and FIG.
Next, embodiments of the present invention will be described in detail. [0043] * 1 locks the P / W motor and reduces the load current
20A and the contact life test was performed.
You. * 2 indicates consumption of tungsten lamp
Set the power to 108 W and the load current to 55 A,
In this case, a life test was performed. Position of engagement between armature 2 and movable contact spring 5
(A2), make-side fixed contact spring
A concave portion 12 in which both end surfaces 6d and 6e of
The first embodiment of the present invention, in which the upper and lower sides are restrained (b2),
For inrush current control of pump load, capacitor load, etc.
Are suitable. The lamp load depends on the inrush current of the lamp.
Capacitor load, the discharge current of the large capacity capacitor is closed
Sometimes flows. In this case, it greatly affects the life of the contacts.
Is a contact chatter when the contact is closed. Lamp inrush current
And the peak discharge current of the capacitor is very large.
The contact point is temporarily opened by the contact chatter near the peak of
When separated, an arc is generated, and the heat generated by the arc causes contact surface
Is heated by contact welding and the formation of protrusions and holes on the contact surface
Failures such as contact locking may occur. Therefore, the armature 2 and the movable contact spring
5 is moved toward the hinge side (a2), and the movable contact spring
The stress is reduced by lowering the make side stiffness of No. 5.
And make both ends 6d and 6e of the fixed contact spring 6 on the
The upper and lower sides of the concave portion 12 provided in the
Absorbs point collisions and reduces contact chatter.
Wear. Next, the armature 2 and the movable contact spring 5
The engagement position is shifted toward the contact point (a1), and the fixed contact on the make side
The end face 6d of the spring 6 is placed on the concave portion 12 provided in the spool 1.
The second embodiment of the present invention, in which the side is restrained (b1),
Suitable for controlling the inductance of solenoids and solenoid loads.
You. In the case of a motor load, etc.,
According to the point chatter, it is the same as the lamp load. Only
And the current value is smaller than the lamp load.
Because of the large effect of arcing at the time of contact opening,
A different combination from the load is required. In order to reduce the occurrence of arcs at the time of contact opening
The contact position between the armature 2 and the movable contact spring 5
Move in the direction of the point (a1), and
To increase the contact force by increasing the
The end face 6d of the spring 6 is placed on the concave portion 12 provided in the spool 1.
Side to move quickly when the movable contact is opened.
To reduce the occurrence of arcs [0050] According to the present invention as described above,
-If the armature and the movable contact spring
Use the combination with the edge restraint depending on the application of the contact load.
Electromagnetic relay with optimum contact life characteristics
Vessels can be provided. Further, a connection between the armature and the movable contact spring is provided.
Position and fixed contact spring end restraint
It can be recombined, and the life characteristics according to the application of the contact load
Sex can be obtained. The present invention is not limited to the above embodiments.
However, within the technical idea of the present invention, each embodiment is suitable.
Obviously, it can be changed at any time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an electromagnetic relay according to one embodiment of the present invention. FIG. 2 is a cross-sectional view showing a relationship between an engagement position between an armature and a movable contact spring in the electromagnetic relay according to one embodiment of the present invention. FIG. 3 is an exploded perspective view showing a structure for restraining a tip of a make-side fixed contact spring in the electromagnetic relay according to one embodiment of the present invention. FIGS. 4A and 4B are front views showing a structure for restraining a tip of a make-side fixed contact spring in an electromagnetic relay according to an embodiment of the present invention. FIG. 5 is a perspective view showing an electromagnetic relay according to a conventional example. [Description of Signs] 1 spool 2 armature 3 yoke 4 hinge spring 5 movable contact spring 6 fixed contact spring 7 fixed contact 8 movable contact 9 coil 10 coil terminals 11a and 11b fitting groove 12 recess

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H01H 50/00-51/36

Claims (1)

(57) [Claims] 1. A spool, an armature, and a yoke.
, Hinge spring, movable contact spring, and fixed contact spring
Interaction between the spring force of the movable contact spring and the magnetic force
The fixed and movable contacts forming a pair are electrically intermittent
Electromagnetic relayManufacturing method of, The spool is wound with a coil, The armature is inserted into the gap of the spool
AndProjection for connecting with the movable contact spring
Has, The yoke is combined with the armature and the magnetic
It forms a magnetic circuit that generates force, The hinge spring connects the armature and the yoke.
Magnetically connected, The movable contact spring is formed integrally with the hinge spring.
Wherein the movable contact is provided at the tip end,Said a
-It has a fitting hole for connecting with an armature,
Pressing and fixing the protrusion of the armature into the fitting hole,
The movable contact spring is fitted with a movable contact spring.
In the direction of approaching or moving away from the movable contact
Is set to The fixed contact spring,Molded into L shape, lower endIs
Fixed on the spoolRises upwards and extends laterally
A fixed contact is provided at a position facing the movable contact.
And The lateral end of the fixed contact spring is bent by a movable contact spring.
One side in the opposite direction is pressed against the spool and supported on one side
Or two sides supported by crimping both ends to the spool
The movable part
Set the contact hole of the contact spring so that it approaches the movable contact.
If fixed, the lateral end of the fixed contact spring is one-sided
And the fitting hole of the movable contact spring is
Beside the fixed contact spring when set in the direction to move away
Direction ends should be used in combination so that they are supported on two sides.
With this, optimum contact life characteristics can be obtained for each application.
Give Electromagnetic relay characterized by thatManufacturing method.