JPH0443951Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to the structure of a polarized relay.

[Background Art] Conventionally, each component of a relay is placed on a base, a case is placed over the base, and nitrogen gas or the like is filled through a sealing hole drilled in the base or the case. When sealing a hole, heat and pressure are applied to seal it. However, in this case, the portion (case or base) where the sealing hole is provided needs to be strong because heat and pressure are applied to close the sealing hole. Therefore, the part of the case or base where the sealing hole is provided needs to be made thicker, and if the case or base is made thicker to provide the sealing hole, there is a problem that the overall shape will become larger. .

[Purpose of the invention] The present invention has been proposed in view of the above points, and is a relay structure whose purpose is to ensure strength at the position of the sealing hole without increasing the overall shape. It provides:

[Disclosure of the invention] (Structure) The present invention comprises a coil block in which a coil is wound around an iron core, a card block which is attracted to the iron core and rotatably supported, and a coil block which is arranged in tandem. The contact blocks are arranged in tandem and laterally to the card block, and are driven by the card block to open and close the contacts; a base on which these blocks are arranged; and a base that covers the top surface of the base. A long shaft for pivotally supporting the card block is provided upwardly protruding from the end of the base on the side of the card block and contact block, and a coil block is provided to prevent deformation of the shaft. Forming a protruding part whose upper surface is located above the upper surface of the base where it is located and having a thicker thickness, drilling a sealing hole in the protruding part of the base, and drilling the sealing hole. Another feature is that when a shaft for supporting the card block is provided, the thickened portion of the base is actively utilized to prevent deformation of the shaft.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
First, let's start with Figures 1 to 4 regarding the overall configuration of the relay.
This will be explained using figures. Fig. 2 is an exploded perspective view of the whole, Fig. 3 is a perspective view of coil block A, and Fig. 4 is a perspective view of the coil block A.
The figure shows a perspective view of the assembled state, and each figure shows a cross-sectional view of the whole.

A coil block A is disposed on a flat part 2 on one side of the upper surface of the base 1 made of an insulating material, and a protruding base part 3 that is one step higher than the flat part 2 on the other side of the base 1 is provided with a coil block A. Card block B is arranged. Contact blocks C are disposed on the side walls 4 of the base 1 on both sides of the protrusion 3. That is, a coil block A and a contact block C are arranged in tandem, and a card block B is arranged between both contact blocks C.

First, coil block A is constructed as follows. A coil 5 is wound around the outer periphery of a coil bobbin 6 which has flanges 7 and 8 formed on both sides, and a coil terminal 10 is integrally molded on one of the thick flanges 8. The upper part of the coil terminal 10 is a connecting part 10a that protrudes from the upper surface of the collar part 8 and is connected to the coil 5, and the lower part is a terminal piece 1 that protrudes from the lower surface of the base 1.
It is set to 0b. An insertion hole 9 is provided in the body of the coil bobbin 6, and an iron core 11 made of a magnetic material is inserted through the insertion hole 9. A yoke 13 is disposed on the lower surface of the coil bobbin 6, and one end of the yoke 13 is bent upward to form a hole 14 into which one end of the iron core 11 is inserted and fixed. A pair of magnetic pole pieces 15 are integrally formed on the other end side of the yoke 13, and between the magnetic pole pieces 15, an attracting piece 12 of the iron core 11 whose both sides serve as magnetic pole surfaces is attached as shown in FIGS. 3 and 1a. It will be located in

Next, contact block C will be explained. Contact block C is not on the side of coil block A,
The contact block C is arranged in the vertical direction, and is composed of a common terminal 16, a contact spring 18, a fixed terminal 21, etc., and is arranged on the side wall 4 of the base 1. As shown in FIG. 2, the common terminal 16 made of a conductive material includes a wide center piece 16a for fixing, and a contact spring 18.
It consists of an upper piece 16b for fixing the base 1, and a lower terminal piece 16c for external connection that protrudes from the lower surface of the base 1. This common terminal 16 is inserted into a slit 24 bored in the side wall 4 of the base 1, and the center piece 16a of the common terminal 16 is located inside this slit 24.
The locking piece 17 cut and raised at the slit 2
4, the common terminal 16 is disposed in one slit 24 of the side wall 4. Contact spring 18 made of conductive material and having elasticity
is bent into a substantially Z-shape, and the movable contact 20 is fixed to the outer surface of the tip, and the base is fixed to the upper piece 16b of the common terminal 16 by the fixing tool 19, so that the contact spring 18 is connected to the common terminal. It is fixed to the terminal 16. When both common terminals 16 are arranged on the side wall 4 of the base 1, the contact springs 18 are bent in the direction in which both the contact springs 18 approach each other. The fixed terminal 21 made of a conductive material includes a central piece 21a formed in the same shape as the central piece 16a of the common terminal 16, and an upper upper piece 21b to which a fixed contact 23 facing the movable contact 20 of the contact spring 18 is fixed. It is composed of a lower terminal piece 21c. A locking piece 22 is similarly cut and raised on the center piece 21a, and the fixed terminal 21 is inserted into the slit 25 in the side wall 4 of the base 1, and is arranged in the same manner as the common terminal 16 by the locking piece 22. Ru.

Card block B is arranged in tandem with coil block A and is located between contact block C.
A card 26 made of insulating material and a pair of armatures 30
and a permanent magnet 31 by integral molding. A pair of armatures 30 are arranged at a predetermined interval along one end of the card 26, and a cylindrical shaft support 28 is integrally formed at the other end of the card 26.
Pushing pieces 27 for pushing and driving the contact springs 18 are integrally formed on both sides of the central part of the card 26, and the pushing pieces 27 and the shaft support 28 are connected to the connecting portion 32.
They are connected by The connecting portion 32 is formed to be narrower than the shaft support 28 . A permanent magnet 31 is disposed inside the card 26, and a magnetic path is formed by the armature 30, the iron core 11, the yoke 13, etc. by the permanent magnet 31, and a so-called latching type relay is constructed. Pressing piece 27 of card 26
As shown in FIG. 1a, a groove 33 is formed in the lower surface of the card 26, and a contact spring 18 is disposed in this groove 33, so that the contact spring 18 is driven into contact with the rotation of the card 26. . Axis branch 2 of card 26
8 is bored with a shaft hole 29, and this shaft hole 29
is inserted into a shaft 34 having a long axis extending from the end of the upper surface of the base 1, and the card block B is rotatable about this shaft 34 as a fulcrum. When card block B is placed, armature 30 is
They are located between the attracting piece 12 and the magnetic pole piece 15 of 1, respectively.

As shown in FIG. By locking into the formed recess 37, the case 35 is placed over the base 1.

Next, the operation will be explained. Now, when the coil 5 is energized, the attraction piece 12 of the iron core 11 and the magnetic pole piece 15 of the yoke 13 are magnetized, the card block B rotates about the shaft support 28, and the armatures 30, 30 are attached to the attraction piece 12. It is attracted to one magnetic pole face and one magnetic pole piece 15. At this time, due to the rotation of the card block B, the pressing contact piece 27 of the card 26 is pressed against one of the contact springs 1.
8 to the outside, the contact spring 18
The movable contact 20 contacts one fixed contact 23 and closes. Further, the other contact spring 18 is simultaneously driven inward, and the movable contact 2 of the other contact spring 18
0 will be separated from the other fixed contact 23.
Here, even if the current to the coil 5 is cut off, the armature 30 is still attracted to the attraction piece 12 of the iron core 11 and one of the magnetic pole pieces 15 due to the supermagnetic force of the permanent magnet 31, and maintains that state. . Next, when the excitation direction of the coil 5 is reversed, the iron core 11 and the yoke 13
A magnetic attraction force in the opposite direction to the above acts on the armature 3.
0 and 30 are attracted to the other magnetic pole surface of the attraction piece 12 and the other magnetic pole piece 15. Therefore, the card block B rotates in the opposite direction to the above using the pivot support 28 as a fulcrum, and the push piece 27 of the card 26 pushes the other contact spring 18 outward, causing the contact spring 18 to The movable contact 20 is connected to the other fixed contact 2.
3 and one contact spring 1.
8 inward to move the movable contact 2 of the contact spring 18.
0 is opened from one fixed contact 23. In this way, the relay in this embodiment is of a so-called latching type, in which the card block B rotates and switches the contacts 20 and 23 by changing the current direction of the coil 5.

Next, the gist of the present invention will be explained. Card block B and contact block C are arranged in tandem with coil block A as described above.
is arranged on the upper surface of a protrusion 3 which is thicker than the flat part 2 of the base 1. In other words, the card block B and the contact block C do not require as much height as the coil block A, and can be formed smaller in height. In addition, the shaft hole 29 of the card 26 which is relatively thick is formed long, so that the shaft 3 inserted into the shaft hole 29
It is necessary to increase the axis length of No. 4 accordingly. Then, if the axial length of this shaft 34 is increased,
There is a possibility that the shaft may be deformed due to the thickness of the base 1. Therefore, in order to prevent the shaft 34 from deforming, the thickness of the base 1, that is, the protruding portion 3 is increased. The upper surface of the base 1 corresponding to the coil block A is located one level higher than the upper surface of the base 1 corresponding to the card block B and the contact block C, and the thickness of the protrusion part 3 is made thicker accordingly.

As shown in FIGS. 1b and f, a circular recess 39 is formed approximately at the center of the lower surface of the protruding portion 3 of the base 1, which has a thick wall. A cylindrical portion 40 is formed integrally with the base 1. This cylindrical portion 40 is provided with a sealing hole 38 that passes through the top and bottom of the base 1. Therefore, by forming the sealing hole 38 in the thick portion of the base 1, the base 1 has sufficient strength even when heat and pressure are applied to seal the hole 38. In addition, since the thick protrusion portion 3 is provided in the unnecessary space below the card block B and contact block C, the overall shape does not become large.
The thick portion of the base 1 allows stable thermal bonding of the sealing hole 33.

[Effects of the invention] As described above, the present invention includes a coil block in which a coil is wound around an iron core, the coil blocks arranged in tandem, a card block which is attracted to the iron core and rotatably supported, and a coil. The blocks consist of contact blocks arranged in tandem and laterally to the card block, which open and close contacts when driven by the card block, a base on which these blocks are arranged, and a base covering the top surface of the base. a case for supporting the card block, and a vertically long shaft for pivotally supporting the card block is provided on the end side of the base on the side of the card block and the contact block, and a vertically long shaft is provided to project upward;
In order to prevent deformation of the shaft, a thick protruding part is formed with the upper surface located above the upper surface of the base where the coil block is located, and a sealing hole is drilled in the protruding part of the base. Therefore, by providing a shaft to support the card block and providing a seal hole in the protrusion with a thick wall to prevent the shaft from deforming,
Instead of drilling a separate sealing hole in the base or case as in the past, the thick part of the protrusion needed when forming the shaft is used, and the protrusion is made of a coil block. The upper surface is located above the upper surface of the base where the seal is located, making it thicker, so the overall shape can be made smaller without increasing the size, and the hole for sealing is made thicker. This provides the effect of stable thermal bonding of the sealing hole.

[Brief explanation of drawings]

Fig. 1a is a cutaway plan view of a relay according to an embodiment of the present invention, Fig. 1b is a cross-sectional view, Fig. 1c is a cross-sectional view, Fig. 1d is a side sectional view, Fig. 1e is a side sectional view, and Fig. 1c is a cross-sectional view. Figure f is a bottom view, Figure 2 is an exploded perspective view of the entire relay, Figure 3 is a perspective view of the coil block, and Figure 4 is an assembled perspective view of the relay. 1 is a base, 3 is a projecting part, 5 is a coil, 11 is an iron core, 20 is a movable contact, 23 is a fixed contact, 38 is a hole, A is a coil block, B is a card block,
C is a contact block.

Claims (1)

[Scope of utility model registration request] A coil block, in which a coil is wound around an iron core, and a coil block are arranged in tandem, and a card block, which is attracted to the above-mentioned iron core and rotatably supported, and a coil block are arranged in tandem, and the coil block is arranged in tandem, and It has a contact block which is arranged on the side and opens and closes the contacts by being driven by the card block, a base which arranges these blocks on the upper surface, and a case which covers the upper surface of the base, and the above card block and contact block A long shaft for supporting the card block is provided on the end of the side base to protrude upward, and the upper surface is located above the upper surface of the base on which the coil block is located to prevent deformation of the shaft. 1. A structure of a relay, characterized in that a protruding part of the base is formed with a thicker thickness, and a sealing hole is bored in the protruding part of the base.