JP2001338563A - Relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relay by which a large contact pressure is obtained. SOLUTION: A formed support 24 provided integrally with a card 4 has ribs 24a formed integrally with the support 24, extending parallel to the plate faces opposite to the plate faces of movable contact spring plates 23A and 23B which are moved when an electromagnet block 5 is excited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay such as a high-frequency relay.

[0002]

2. Description of the Related Art A high frequency relay proposed by the present inventors is provided with a structure which is a premise of the relay of the present invention.

In this high-frequency relay, as shown in FIG. 8, three fixed contact portions 20, 20, 20 are provided at regular intervals between parallel shield plates 16A, 16B. The movable contact spring plate 23A which contacts and separates the movable contact portions at both ends with respect to the surface on the shield plate 16A side of the fixed contact portions 20, 20 and the shield plate 16A.
And the center and the rightmost fixed contact portions 20, 20
The movable contact spring plate 23B for contacting and separating the movable contact portions at both ends with respect to the surface on the side of the shield plate 16B is fixed contact portion 20,
20 and the shield plate 16B, and these movable contact spring plates 23A, 23B are held on a card (not shown) by molded supports 24, 24 whose central portions are embedded by insert molding. When driven by excitation of an electromagnet block (not shown), the movable contact spring plate 23
A movable contact portion A corresponds to the fixed contact portion 2 as shown in the figure.
0, 20 and the movable contact spring plate 23B moves in a direction in which the movable contact portion of the movable contact spring plate 23B is separated from the corresponding fixed contact portion 20, 20 and contacts the plate surface of the shield plate 16B.
A and 23B are moved.

Here, when the electromagnet block is in the non-excited state, the card is driven to return by the action of a return spring (not shown), and the movable contact portion of the movable contact spring plate 23A corresponds to the corresponding fixed contact portion 20, 20. Separated from shield plate 16A
And the movable contact spring plates 23A, 32B are moved in a direction in which the movable contact portions of the movable contact spring plates 23B contact the corresponding fixed contact portions 20, 20.

Accordingly, the movable contact portion of the movable contact spring plate 23A and the corresponding fixed contact portions 20, 20 are normally open (hereinafter referred to as N).
The contact portion is normally closed (hereinafter referred to as N) by the movable contact portion of the movable contact spring plate 23B and the corresponding fixed contact portions 20 and 20.
C).

[0006]

By the way, in the above-mentioned structure, when looking at the spring load and the attraction curve, the spring force is weak because the distance from the support point of the movable contact spring plate to the movable contact portion is long. Is excited to move the movable contact spring plate 23A on the NO contact portion side and bring the movable contact portion into contact with the fixed contact portions 20, 20, the spring load curve (I) shown in FIG. The slope of the spring load curve in the process of overtraveling to the final position was gentle, a large contact pressure was not obtained, and the opening characteristics were not good. In addition, II in FIG. 6 is a suction force curve.

Similarly, a large contact pressure could not be obtained at the movable contact spring plate 23B for bringing the movable contact portion into contact with the fixed contact portions 19c and 19a by driving by the bias of the return spring.

The present invention has been made in view of the above points, and an object of the present invention is to provide a relay capable of obtaining a large contact pressure.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, at least one movable contact spring plate and a central portion of the movable contact spring plate are supported by a molded support to form a movable contact spring. A card for moving the spring plate in a direction perpendicular to the plate surface, an electromagnet block for driving the card so as to move the movable contact spring plate in one direction of the plate surface during excitation, and excitation of the electromagnet block When the card is driven by, the movable contact spring plate is in contact with both ends of the plate surface in the moving direction, the relay having a pair of contact portions that are separated by a return operation of the card when the electromagnet block is not excited, A rib is formed to extend from both sides of the molded support body toward both ends of the movable contact spring plate so as to be parallel to the plate surface of the movable contact spring plate opposite to the plate surface to be brought into contact with the contact portion. That.

According to a second aspect of the present invention, in the first aspect of the present invention, the first movable contact spring plate is provided as a movable contact spring plate, and the second movable contact spring plate is arranged in parallel to both ends of the first movable contact spring plate. A movable contact spring plate is provided, and a central portion of each movable contact spring plate is supported on the card by the molded support provided corresponding to the movable contact spring plate. A pair of first contact portions that contact at both ends of the plate surface in the moving direction of the contact spring plate and are separated by the return operation of the card when the electromagnet block is not excited, and when the card is driven by excitation of the electromagnet block A pair of second contact portions that are in contact with both ends of the plate surface in the moving direction of the second movable contact spring plate and that are separated by a return operation of the card when the electromagnet block is not excited;
When the card is driven by excitation of the electromagnet block, both ends of the plate surface opposite to the moving direction of the first movable contact spring plate are separated, and contact is made by a return operation of the card when the electromagnet block is not excited. When the card is driven by exciting the pair of third contact portions and the electromagnet block, the second
Both ends of the plate surface in the moving direction of the movable contact spring plate are separated,
A pair of fourth contact portions that are brought into contact by a return operation of the card when the electromagnet block is not excited, and that the first and second contact portions contact the first and second contact portions when the card is driven by excitation of the electromagnet block. A feature is that at least one of the movable contact spring plates is an object for forming the rib.

According to a third aspect of the present invention, in the second aspect of the present invention, the first contact portion is a normally open contact portion, the third contact portion is a normally closed contact portion, and the second and the second contact portions are normally closed contact portions. The contact portion of No. 4 constitutes a ground contact portion, and the first movable contact spring plate to be brought into contact with the first contact portion when the card is driven by excitation of the electromagnet block is an object for forming the rib. I do.

According to a fourth aspect of the present invention, in the second aspect of the invention, the first contact portion is a normally open contact portion, the third contact portion is a normally closed contact portion, and the second and the second contact portions are normally closed contact portions. The contact portion of No. 4 constitutes a ground contact portion, and the second movable contact spring plate to be brought into contact with the second contact portion when the card is driven by excitation of the electromagnet block is an object for forming the rib. 3. The relay according to claim 2, wherein

According to a fifth aspect of the present invention, in the second aspect of the present invention, both the first and second movable contact spring plates are to be formed with the rib.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the width of the rib in a direction perpendicular to the extending direction is set within the width of the movable contact spring plate in the widthwise direction. According to a seventh aspect of the present invention, in the invention of any one of the first to sixth aspects, both sides of the movable contact spring plate on which the rib is formed are projected from the molded support. A wide portion is formed in the base portion, and the rib is extended so as to be parallel to the wide portion.

According to an eighth aspect of the present invention, in any one of the first to sixth aspects, the molding material of the molding support including the rib is an LCP material.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments.

(Embodiment 1) In this embodiment, as shown in FIGS. 2 to 4, a base 1 made of a synthetic resin molding material, a relay mechanism disposed on the base 1, and a base 1 attached to the base 1. And a box-shaped case 2 made of a synthetic resin molding agent.

An electromagnet block 5, which is a main component of the relay mechanism, includes a coil bobbin 7 on which an exciting coil 6 is wound,
An iron core 8 inserted through the center through-hole of the coil bobbin 7 and one end of the iron core 8 protruding from one end side of the coil bobbin 7 are caulked and fixed to a front plate surface, and bent from this end so as to be parallel to the coil bobbin 7. The yoke 9 is formed by extending the tip of the bent piece to the other end of the coil bobbin 7.

The electromagnet block 5 includes a coil bobbin 7
Are disposed on the base 1 such that the lower portions of the coil terminals 10 and 10 provided on the base 1 project from the fitting holes 11 provided in the base 1 toward the lower surface side of the base 1.

The armature 12, which is attracted and driven when the electromagnet block 5 is excited, is formed of an L-shaped bent iron piece. One piece 12a is opposed to the other end of the iron core 8 exposed at the other end of the coil bobbin 7. The inner corner of the bent portion is disposed so as to be rotatable against the tip of the bent piece of the yoke 9. Further, the tip of the other piece 12b is brought into contact with a side surface of the card 4 described later.

The lower portion of the hinge spring 3 is press-fitted into a press-fitting groove 14 formed in a lower portion 13 of a side wall 25 provided at one end of the base 1 on the side where the armature 12 is provided. The outer end of the bent portion of the armature 12 is pressed by the tip of the holding piece 3a extending more obliquely, and the inner corner of the armature 12 is pressed against the yoke 9 to rotate freely. It is designed to pivot.

On one side of the base 1 parallel to the portion where the electromagnet block 5 is disposed, the partition 15 is separated from the portion where the electromagnet block 5 is disposed by the partition wall 15, and the partition wall 15 and the side wall 36 on one side of the base 1 and the side walls 25 on both ends. The space above the base 1 surrounded by {circle around (1)} is a portion where the shield portion including the contact portion is disposed.

This shield portion is composed of two shield plates 16A and 16B arranged in parallel, and the base 1 extends along the inner surface of the side wall 15 at both ends of the shield portion installation site.
Both shield plates 16 are provided on both sides of each rib 17 formed above.
A, 16B are disposed with the opposing surfaces at both ends in contact with each other.

The rib 17 is provided on the shield plate 16 of the base 1.
The positions of the shield plates 16A and 16B are determined by the molding accuracy of the ribs 17, and the shield plates 16A and 16B are in contact with the opposing surfaces. The shield plates 1A and 16B are not affected by variations in the thickness of the plates 16A and 16B.
The distance between the plate surfaces inside 6A and 16B can be set with high accuracy.

As shown in FIG. 4A, a position corresponding to the center position of the shield plates 16A and 16B and a position near each of the ribs 17 are located on the center line which bisects the shield plates 16A and 16B. The fixed contact terminals 19a, 19b, and 19c are respectively provided through holes 18 provided in the fixed contact terminals 19a to 19c, and the fixed contact portions 20 of the fixed contact terminals 19a to 19c are placed in a space surrounded by the shield plates 16A and 16B. I'm facing.

Here, on the upper end of each side wall 25 of the base 1 at both ends of the portion where the shield portion is provided, pivot shaft portions 21 provided at both ends of the card 4 driven by the armature 12 are supported. Thus, support portions 22, 22 for bridging the card 4 above the shield portion are formed.

The card 4 has movable contact spring plates 23A and 23B.
Molding using a synthetic resin molding material such as Teflon (registered trademark) (dielectric constant 2.0) that is close to the dielectric constant of air in order to reduce the influence on the impedance of the air and to easily match the characteristic impedance. The rotating support shaft 21 is integrally formed on both upper end surfaces, and molded support bodies 24 supporting the central portions of the movable contact spring plates 23A and 23B by insert molding are provided on both lower end portions. The movable contact spring plates 23A and 23B are arranged between the shield plates 16A and 16B by being arranged in a bridge above the installation site.

Here, in order to solve the problem of the conventional example, in this embodiment, as shown in FIG.
The ribs 24a are integrally formed from the molded support 24 so as to extend in parallel with the plate surfaces of the movable contact spring plates 23A and 23B protruding therefrom. The rib 24a and the plate surface are separated. Now, the movable contact spring plate 23 in parallel with the rib 24a
The plate surfaces of A and 23B are opposite to the plate surface in the direction in which the electromagnet block 5 moves when excited, as described later.
Further, as shown in FIG. 1 (b), the width W in the direction orthogonal to the extending direction of the rib 24a is adjusted to the movable contact spring plates 23A and 23B.
Is smaller than the width dimension w in the short direction. This dimension setting is supposed that the movable contact spring plates 23A. This is to prevent the formation of a molding bur that protrudes outside the outside of 23B and to obtain a stable spring load.

The card 4 has side walls 25 on both ends of the base 1,
Since the rotating pivot portion 21 is rotatably supported and bridged by the rotating support portions 22 provided at the upper end of the movable member 25, the movable contact spring plate held by the spring support portions 24 by insert molding. The positions of 23A and 23B with respect to the upper surface of base 1 are set with high accuracy.

As shown in FIGS. 4 (a) and 4 (b), the rotating pivot 21 has a shaft 21a having a circular front section at the front end thereof, and a lower front section substantially at the back of the shaft 21a. An inverted triangular rotation fulcrum 21b is integrally formed, and the lower end surface of the rotation fulcrum 21b is formed into an arc-shaped curved surface extending over both side surfaces so that the lowermost position thereof coincides with the height position of the center of the shaft 21a. .

On the other hand, the rotation support portion 22 is formed along the inner side surface of the side wall 25 and supports the rotation fulcrum portion 21b at the upper end surface, and the upper end portion of the side wall 25 continuous with the support stage 22a. And a square hole 22b having an open upper end. The distance between the inner surfaces on both sides of the square hole 22b is the same as the diameter of the shaft portion 21a, and the height between the bottom and the upper end surface of the rotation fulcrum 21b is set. The distance is slightly larger than the radius of the shaft 21a so that a gap is formed between the lower end and the bottom of the shaft 21a.

The two movable contact spring plates 23A and 23B supported by the respective spring support portions 24 of the card 4 by insert molding are arranged on both sides of a line connecting the fixed contact terminals 19a to 19c. Both ends of the first movable contact spring plate 23A contact and separate from one surface of the fixed contact portion 20 of the central fixed contact terminal 19a and one surface of the fixed contact portion 20 of the fixed contact terminal 19b at one end. A movable contact is formed, and both ends of the second movable contact spring plate 23B have the other surface of the fixed contact portion 20 of the central fixed contact terminal 19a and the other surface of the fixed contact portion 20 of the fixed contact terminal 19b at the other end. The movable contacts are configured to contact and separate from each other, and the contact and separation operations are performed by the rotation of the card 4.

The shield plates 16A and 16B are connected to the spring support portions 24 of the movable contact spring plates 23A and 23B on the side closer to each other.
Is formed by bending the escape portion 26 to escape from the center by bending a portion between one end from the center in the opposite direction,
The flat surfaces of the shield plates 16A and 16B on both sides of the escape portion 26 constitute a ground contact portion that comes into contact when both ends of the movable contact spring plates 23A and 23B are separated from the fixed contact portion 20 and move.

Each of the shield plates 16A and 16B has the same shape, and has two ground terminals 27a and 27b, respectively.
Are integrally formed.

Further, the shield plates 16A and 16B are the base 1
Fixed contact terminals 19a, 19b or 1
9c, a ground terminal 27a is formed at one end of a portion where the escape portion 26 is formed, and the ground terminal 27a is perpendicular to the inside of the lower end of the portion where the escape portion 26 is formed. A hanging piece 28b which is bent and bent at a right angle further below the tip of a wide piece (not shown) extended so as to be positioned on a straight line connecting the fixed contact terminals 18a to 18c when the tip is disposed on the base 1. And a narrow plate extending downward from one end of the lower end. The other ground terminal 27b is bent inward at a right angle inward from a position outside the escape portion 26 near the other end of the portion forming the escape portion 26, and the tip thereof is fixed to the fixed contact terminal 18a-
18c is bent downward at a right angle from a tip of a wide piece (not shown) extended so as to be located on a straight line connecting 18c. Become.

The thus formed shield plate 16A,
16B is arranged symmetrically on the base 1 so that the ground terminals 27a and 27b are connected to the central fixed contact terminal 19a,
It can be arranged between the fixed contact terminals 19b or 19c at the end.

When disposing the shield plates 16A and 16B at the shield portion, the opposing surfaces of both ends thereof are positioned in contact with the both side surfaces of the ribs 17 and 17 as described above. In addition, each of the ground terminals 27a, 2
Each of the ground terminals 27a, 27b is projected to the lower surface side of the base 1 through an insertion hole 29 penetrating through the base 1 corresponding to the width of the hanging pieces 28b, 28b 'integrally forming the 7b. Or 28b 'is inserted into the insertion hole 29.

Then, as described above, the shield plates 16A, 1
After arranging the 6B at the shield portion arranging portion, the pivot support portions 22 of the side walls 25, 25 at both ends of the base 1 rotatably support the pivot portions 21 at both ends of the card 4 so that the card 4 can be moved. By arranging the movable contact spring plate 23A between the fixed contact terminals 19a and 19b and the escape portion 26 of the shield plate 16A and arranging the movable contact spring plate 23B with the fixed contact terminal 19a by arranging the bridge above the shield arrangement portion. , 19c and shield plate 16
A can be disposed between the A and the escape portion 26.

When the card 4 is arranged on a bridge, the side wall 25
By inserting the shaft portion 21a into the square hole 22b of the side rotation support portion 22 from the upper end opening and mounting the rotation fulcrum portion 21b on the upper end surface of the fulcrum base 22a, the card 4 becomes the base 1
Is bridged between both side walls of the. Thus, the support in the horizontal direction is shared by the square hole 22 and the shaft portion 21a, and the vertical support is shared by the fulcrum base 22a and the rotation fulcrum portion 21b.
By making the center of 1a coincide with the position of the upper end surface of the fulcrum base 22a, the pivoting shaft 21 can be more reliably supported than in the case where it is supported at one place. Further, since the lower end of the shaft portion 21a is floating above the bottom of the square hole 22b, burrs generated when the base 1 is formed can be released.

The lower side surface of the card 4 arranged on the bridge is constantly urged by the return spring 31 in the direction of the shield plate 16A. The return spring 31 press-fits the base 31 a into a press-fitting groove 32 formed on one inner surface of the side wall 36 of the base 1.
The tip of a spring piece 31b extending from the upper end of the upper part a toward the shield plate 16B resiliently contacts the lower side surface of the card 4 located above the upper end of the shield plate 16B. The card 4 is rotated about the portion 21 so that both ends of the inner movable contact spring plate 23A abut against plate surfaces near both ends of the escape portion 26 of the shield plate 16A, and both ends of the outer movable contact spring plate 23B. The parts are brought into contact with the fixed contact parts 20, 20 of the fixed contact terminals 19a, 19c. The movable contact spring plate 23
The portions constituting the movable contact portions at both ends of A and 23B are divided into two parts.

Here, as shown in FIG.
The end of the other piece 12b of the armature 12 contacts the side surface of the card 4 at the same position on the opposite side of the side surface of the card 4 pressed by 1b. The pressed parts face each other and balance the force
Therefore, the relay operation is stabilized.

The card 4 including the electromagnet block 5, the shield plates 16A and 16B, the fixed contact terminals 19a to 19d, the movable contact spring plates 23A and 23B on the base 1, the armature 1
2, after the members of the relay mechanism such as the hinge spring 3 and the return spring 31 are disposed, when the spring pressure of the return spring 31 and the hinge spring 3 is adjusted, the side wall of the base 1 on which the springs 31 and 3 face. This can be easily performed through the openings 25a of the 25 and the openings 36a of the side wall 36.

After the adjustment of the spring pressure, the side walls 2 at both ends of the base 1
5 and the side walls 36 on both sides so as to fit inside.
Then, if the case 2 is attached, a desired high-frequency relay is completed.

The ceiling surface of the case 2 is provided with two pairs of rotation support portions 34 each of which fits into two recesses 34 provided on the upper end surface of the card 4. Each pair is case 2
The lower portions of the pair of rotation support portions 34 in the longitudinal (both ends) direction of the case 2 fit into the corresponding recesses 37 even when the two sides of the case 2 are attached to the base 1 in opposite directions. I have. The height of the bottom of the concave portion 37 on the card 4 side is the same as the position of the lower end of the rotation fulcrum 21b of the rotation pivot 21 and when the case 2 is attached. The rotation support portion 34 fits into the concave portion 37, and supports the card 3 rotatably not only from the base 1 side but also from the case 2 side, and stabilizes the rotation operation of the card 4 regardless of the mounting direction of the relay. To stabilize the high frequency characteristics. The bottom of the recess 37 is formed in an arcuate surface so that the card 4 can rotate in both directions in a state in which the card 4 is in contact with the lower surface of the rotation support portion 34.

Next, the operation of the high-frequency relay of the present embodiment configured as described above will be described.

First, when the electromagnet block 5 is not energized, the card 4 is rotated in the direction to move toward the electromagnet block 5 by the bias of the return spring 31, and both ends of the movable contact spring plate 23A are shielded. It contacts the inner surface of the plate 16A, that is, the ground contact portion, and is grounded through the ground terminals 27a and 27b.

On the other hand, both ends of the movable contact spring plate 23B come into contact with the fixed contact portions 20, 20 of the fixed contact terminals 19a, 19c, thereby conducting between the fixed contact terminals 19a, 19c.

Next, when the electromagnet block 5 is excited, one piece 12a of the armature 12 is attracted to the iron core 8, and the armature 12 rotates. Due to this rotation, the other piece 12 b pushes the card 4 and turns the counter electromagnet block 5 in the direction against the bias of the return spring 31. Due to this rotation, the movable contact spring plate 23B is separated from the fixed contact portions 20, 20 at both ends by contacting the inner surface of the shield plate 16B, that is, the ground contact portion, and grounded via the ground terminals 27a, 27b. You.

On the other hand, the movable contact spring plate 23A connects the movable contact portions at both ends to the fixed contact portions 20 of the fixed contact terminals 19a and 19b.
20 to make the two fixed contact terminals 19a, 19b conductive. This state is the state shown in FIG.

Here, when the movable contact spring plates 23A and 23B move and the respective movable contact portions come into contact with the fixed contact portions 20 and 20 or the ground contact portion formed by the inner surface of the shield plate 16B and then try to bend further. Each molded support 24
Of the movable contact spring plates 23A and 23B are substantially shortened and the spring load is increased, resulting in a large contact pressure. Will be.

When the excitation of the electromagnet block 5 is stopped, the card 4 is rotated by the bias of the return spring 31 so that the lower portion moves toward the electromagnet block 5, and the movable contact spring plate 23A
Are in contact with the ground contact portion on the inner surface of the shield plate 16A, and both ends of the movable contact spring plate 23B are fixed contact terminals 1
The state returns to the state of contact with the fixed contact portions 20 and 20 of 9a and 19c. At this time, the opening operation is quickly performed by the large spring return force of the movable contact spring plates 23A and 23B, and the opening characteristics are improved. Also, the movable contact spring plates 23A, 2 on both sides.
Since the rib 24a is formed corresponding to 3B, the card 4 does not twist and the translation of the card 4 is stabilized.

Although the ribs 24a are provided in the embodiment corresponding to the movable contact spring plates 23A and 23B, any one of them may be provided.
May be provided. .

FIG. 6 (III) shows a spring load curve in the present embodiment, and it can be seen that a larger spring load is obtained than in the case of the conventional example (I).

As shown in FIG. 7, the width of the base inserted into the molded support 24 and protruding from the molded support 24 is made wide, and the width W of the rib 24a is made as large as possible within this wide part. The ribs 24a may have rigidity, and the ribs 24a may be prevented from bending or warping. In this case, a stable spring load is obtained.

If an LPC material is used as a molding material for the card 4, the molding support 24, and the rib 24a, the rib 2
4a can be made rigid, so that the ribs 24a
Can be suppressed, and a stable spring load can be obtained as described above. Also, heat resistance is improved.

[0056]

According to the first aspect of the present invention, at least one movable contact spring plate and a central portion of the movable contact spring plate are supported by a molded support so that the movable contact spring plate is perpendicular to the plate surface. A card to be driven to move the movable contact spring plate toward one side of the plate surface at the time of excitation; and an electromagnet block for driving the card so as to move the movable contact spring plate at the time of excitation. In a relay provided with a pair of contact portions that come into contact with both ends of the plate surface in the moving direction and that are separated by the return operation of the card when the electromagnet block is not excited, the side opposite to the plate surface that comes into contact with the contact portion The ribs are formed to extend from both sides of the molded support body in both ends of the movable contact spring plate so as to be parallel to the plate surface of the movable contact spring plate. During the overtravel process after both ends of the plate have come into contact with the corresponding contact portions, the action of the rib can substantially shorten the spring length of the movable contact spring plate and increase the spring load, resulting in a large spring load. There is an effect that a contact pressure can be obtained and the opening characteristics can be improved thereby.

According to a second aspect of the present invention, in the first aspect of the present invention, the first movable contact spring plate is provided as the movable contact spring plate;
The second movable contact spring plate is arranged in parallel in both end directions.
The movable contact spring plate is provided, and the central portion of each movable contact spring plate is supported on the card by the molded support provided correspondingly. When the card is driven by excitation of the electromagnet block, A pair of first contact portions that contact at both ends of the plate surface in the moving direction of the movable contact spring plate and are separated by the return operation of the card when the electromagnet block is not excited, and card driving by excitation of the electromagnet block And a pair of second contact portions that are brought into contact by a return operation of the card when the electromagnet block is not energized, and a pair of second contact portions, wherein both ends of the plate surface in the moving direction of the second movable contact spring plate are in contact with each other; When the card is driven by excitation of the block, both ends of the plate surface opposite to the moving direction of the first movable contact spring plate are separated, and contact is made by a return operation of the card when the electromagnet block is not excited. When the card is driven by exciting a pair of third contact portions and the electromagnet block, both ends of the plate surface in the moving direction of the second movable contact spring plate are separated, and the card is not energized by the electromagnet block. At least one of a first and a second movable contact spring plate that comes into contact with the first and second contact portions when the card is driven by excitation of the electromagnet block. Is the object of forming the rib, the effect of claim 1 can be obtained in a relay having a contact configuration of 2a and 2b.

According to a third aspect of the present invention, in the second aspect of the present invention, the first contact portion is a normally open contact portion, the third contact portion is a normally closed contact portion, and the second and second contact portions are normally closed contact portions. The contact portion of No. 4 constitutes a ground contact portion, and the first movable contact spring plate to be brought into contact with the first contact portion when the card is driven by excitation of the electromagnet block is an object for forming the rib. In the contact structure described above, the effect of the invention of claim 1 can be obtained in the movable contact spring plate corresponding to the normally closed contact portion.

According to a fourth aspect of the present invention, in the second aspect, the first contact portion is a normally open contact portion, the third contact portion is a normally closed contact portion, and the second and second contact portions are normally closed contact portions. The contact portion of No. 4 constitutes a ground contact portion, and the second contact portion is brought into contact with the second contact portion when the card is driven by excitation of the electromagnet block.
In the contact configuration of the high-frequency relay, in the movable contact spring plate corresponding to the normally open contact portion, the movable contact spring plate of the first embodiment is used when the ground contact portion is in contact. The effect is obtained.

According to a fifth aspect of the present invention, in the second aspect of the present invention, both the first and second movable contact spring plates are formed with the ribs. In addition to being obtained together, the spring load on the movable contact spring plates on both sides does not vary, so that twisting and the like are less likely to occur,
There is an effect that the parallel movement of the card is stabilized.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the width of the rib in a direction perpendicular to the extending direction is set within the width of the movable contact spring plate in the widthwise direction. As a result, there is no danger that the molded burrs will protrude from the movable contact spring plate, and there is an effect that a stable spring load can be obtained.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the movable contact spring plate on which the ribs are formed has wide portions formed on both side bases protruding from the molding support. And the rib is extended so as to be parallel to the wide portion, so that the rib can have rigidity, so that warpage and bending of the rib can be suppressed and a stable spring load can be obtained. There is.

According to an eighth aspect of the present invention, in any one of the first to sixth aspects, since the molding material of the molding support including the rib is an LCP material, the rib can have rigidity. , So warpage and deflection of the ribs are suppressed,
There is an effect that a stable spring load can be obtained and heat resistance can be improved.

[Brief description of the drawings]

FIG. 1A is an enlarged plan view of an essential part of an embodiment of the present invention, which can be partially broken. (B) is an enlarged front view in which a part of the movable contact spring plate used in the above is omitted.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 (a) is an enlarged plan sectional view of the same. (B)
FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 4 (a) is an enlarged front view of the essential part of the above, which can be partially broken. (B) is an enlarged side view in which some of the essential parts of the above can be partially omitted.

FIG. 5 is an operation explanatory view of the above.

FIG. 6 is a comparative explanatory diagram of spring load characteristics of the above and a conventional example.

FIG. 7 is an enlarged front view in which a movable contact spring plate according to another embodiment of the present invention is partially omitted.

FIG. 8 is an operation explanatory diagram of a conventional example.

[Explanation of symbols]

 19a to 19c Fixed contact terminal 20 Fixed contact portion 16A, 16B Shield plate 23A, 23B Movable contact spring plate 24 Molded support 24a Rib

Claims (8)

[Claims] At least one movable contact spring plate, a card supporting a central portion of the movable contact spring plate by a molded support and moving the movable contact spring plate in a direction perpendicular to the plate surface, and excitation An electromagnet block for driving the card so as to move the movable contact spring plate in one direction of the plate surface, and both ends of the plate surface in the moving direction of the movable contact spring plate when the card is driven by excitation of the electromagnet block. A contact portion, a relay having a pair of contact portions that are separated by a return operation of the card when the electromagnet block is not excited,
A rib is formed to extend from both sides of the molded support toward both ends of the movable contact spring plate so as to be parallel to a plate surface of the movable contact spring plate opposite to a plate surface to be brought into contact with the contact portion. And relay. 2. A movable contact spring plate comprising: a first movable contact spring plate; and second movable contact spring plates juxtaposed at both ends of the first movable contact spring plate. The center portions of the spring plates are supported on the card by the corresponding molded supports provided respectively, and when the card is driven by excitation of the electromagnet block, both ends of the plate surface in the moving direction of the first movable contact spring plate. And a pair of first contact portions that are separated by a return operation of the card when the electromagnet block is not excited, and a moving direction of the second movable contact spring plate when the card is driven by excitation of the electromagnet block. A pair of second contact portions that are brought into contact by the return operation of the card when the electromagnet block is not excited when the both ends of the plate surface are in contact with each other, and the first movable contact when the card is driven by excitation of the electromagnet block. Both ends of the plate surface opposite to the moving direction of the spring plate are separated, and a pair of third contact portions that come into contact by the return operation of the card when the electromagnet block is not excited, and by the excitation of the electromagnet block When driving the card,
A pair of fourth contact portions which are separated at both ends of the plate surface in the moving direction of the second movable contact spring plate and come into contact with the card when the electromagnet block is de-energized; When the card is driven by excitation of the first and second
2. The relay according to claim 1, wherein at least one of the first and second movable contact spring plates to be brought into contact with said contact portion is an object for forming said rib. 3. The first contact part constitutes a normally open contact part, the third contact part constitutes a normally closed contact part, and the second and fourth contact parts constitute a ground contact part. 3. The relay according to claim 2, wherein the first movable contact spring plate to be brought into contact with the first contact portion when the card is driven by excitation of the electromagnet block is an object for forming the rib. 4. The first contact portion constitutes a normally open contact portion, the third contact portion constitutes a normally closed contact portion, and the second and fourth contact portions constitute a ground contact portion. 3. The relay according to claim 2, wherein the second movable contact spring plate to be brought into contact with the second contact portion when the card is driven by excitation of the electromagnet block is an object for forming the rib. 5. The method according to claim 2, wherein both the first and second movable contact spring plates are to be formed with the rib.
The described relay. 6. The movable contact spring plate according to claim 1, wherein a width dimension of the rib in a direction orthogonal to an extending direction is within a width dimension of the movable contact spring plate in a lateral direction. The described relay. 7. A wide portion is formed at both bases of the movable contact spring plate on which the rib is to be formed, protruding from the molding support, and the rib is formed so as to extend in parallel with the wide portion. The relay according to any one of claims 1 to 6, wherein: 8. The relay according to claim 1, wherein a molding material of the molding support including the rib is an LCP material.