JPS6380435A - Relay - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a relay, and particularly to the shape of a contact driving card for driving a contact mechanism section of the relay.

Conventional technology and its problems Conventionally, the contact mechanism is driven by a contact drive card that rotates based on the excitation and demagnetization of an electromagnetic device.
For example, there are those shown in FIGS. 3 and 4.

That is, this thing has a base 60 and this base 60
The first. The second contact mechanism section 61,62, the electromagnet device 64 provided at the center of the upper surface of the base 60, and the first contact mechanism rotate based on the excitation and demagnetization of the electromagnet device 64. Second contact mechanism section 61.
62, and the base 6.
0 and the 1st. It is composed of a case 66 that seals internal components such as the second contact mechanism parts 61 and 62.

In particular, the contact driving card 65 includes a movable block 68 that accommodates and fixes movable iron pieces 67a and 67b holding a permanent magnet 66 therebetween, connecting portions 69 and 70 extending from both ends of this movable block 68, and connecting portions 69 and 70 extending from both ends of this movable block 68. It consists of a support part 7I that is integrally connected to the movable block 68 at parts G9 and 70, and a support hole 71a provided in this support part 71 is fitted into a support shaft 63 provided upright on the upper surface of the base 60. By doing so, the base 60 can be rotated parallel to the upper surface of the base 60.

Therefore, when the electromagnetic device 64 is excited and demagnetized, the movable iron pieces 67a and 67b alternately approach and separate from the magnetic pole portion 64a, so that the contact driving card 65 rotates about the support shaft 63, and as the electromagnetic device 64 rotates, The first. The movable contact pieces 61a, 62a of the second contact machine lateral parts 61, 62 rotate to open and close the contacts.

However, the connecting portions 69 and 70 of the contact driving card 65 according to the conventional example extend almost straight from both ends of the movable block 68 and face each other in parallel, and the first connecting portion 69 and the connecting portion 70 of the contact driving card 65 according to the conventional example extend almost straight from both ends of the movable block 68 and face each other in parallel. Movable contact piece 6 of second contact mechanism part 61.62
1a and 62a, respectively. Therefore, almost all of the load generated when the contact drive card 65 rotates is applied as a bending load to the intermediate portion of the connecting portion 69.70, and is applied to the intermediate portion of the connecting portion 69. Reference numeral 70 is a support structure at both ends on which a load acts on the intermediate portion. As a result, the connecting portion 69
．． 70 is easily damaged, so in order to prevent this, the thickness of the connecting portions 69 and 70 should be made thicker, or
This requires the use of a material with high mechanical strength, resulting in problems such as an increase in the size of the device and an increase in cost.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a contact drive device that rotates around a supporting part connected and integrated with a movable block that reciprocates based on the excitation and demagnetization of an electromagnetic device. In a relay that drives a side part of a contact mechanism using a card, the movable block and the support part are connected and integrated by a substantially arch-shaped connecting part, and an arm that drives the contact mechanism part is attached to the top of the connecting part. The structure has a section.

Function and Effect Therefore, according to the present invention, since the arm part for driving the side part of the contact mechanism is provided at the top of the arch-shaped connecting part, when the contact drive card is rotated to drive the contact mechanism part. , the top of the connecting portion becomes the point of application of the applied load, and the applied load is applied to this point of application.

Therefore, when the contact drive card rotates and a load is applied to the arm part of the connecting member, the applied load is dispersed into a bending load and a compressive load at the neck part of the connecting member. The load decreases. Since the material is generally more resistant to compressive loads than bending loads, the connections are less likely to fail than in the prior art. As a result, there is no need to increase the thickness of the connecting part,
This has the effect that the device can be made smaller, and there is no need to use materials with high mechanical strength, making it possible to reduce the mast.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings of FIGS. 1 and 2.

The high frequency relay l according to the present invention generally includes a base 2,
The first one built into this base 2. Second contact mechanism section 10
．． 20, an electromagnet device 30, a contact drive card 40, and a drive converter 50.

The base 2 has a substantially box shape, and the groove 5, the groove 6, and the recess 7 are separated by partition walls 3.4 that protrude along adjacent side walls.

Previous 11 fortune telling? The IT parts 5 and 6 are arranged in an oval shape and communicate with the recess 7 via guide grooves 3a, 3b and 4a provided in the partition parts 3 and 4, respectively.

The recess 7 is provided with a positioning recess 7a on its floor surface for positioning an electromagnet device 30, which will be described later.
A pair of positioning protrusions 8a and 8b are provided at the corner formed by the side wall and the partition wall part 4 of the base 2, and the base 2 is located approximately in the middle of the positioning protrusions 8a and 8b.
A support protrusion 8c is provided on the floor surface.

Further, the base 2 is provided with a conductive thin film on its entire surface by plating, vapor deposition, etc., and has an appropriate number of ground terminals 9 protruding from the bottom surface thereof to be electrically connected to the conductive thin film, thereby increasing isolation. .

The first contact machine groove lO has a fixed contact terminal +1.12.13 protruding into the groove 5 and a fixed contact terminal 11.1.
Movable contact piece 1 that can be brought into contact with and separated from 2 and 12 and 13, respectively.
4 and 16, and this flexible Ar contact piece 14. 5. Insulating sliders I, each of which is insert-molded, are slidably fitted into the guide grooves 3a and 3b of the partition wall 3, respectively. + 7, and a connecting spring plate 18 having a three-pronged shape with both ends 18a and 18b capable of sliding engagement with the rear end of the insulating slider 15. It consists of.

The second contact mechanism section 20 includes a fixed contact terminal 21.22 protruding into the groove 6, a movable contact piece 23 that comes into contact with and separates from the fixed contact terminal 21.22, and this movable contact piece 23 is insert-molded, It also includes an insulating slider 24 that slidably fits into the guide 1M4a of the partition wall 4.

Note that the fixed contact terminals 11, 12, 13 and 21.2 are arranged in an abbreviated shape on the upper surface of the base 2.
2 is of course insulated from the conductive thin film of the base 2.

The electromagnet device 30 consists of a spool 31, an iron core 36, a yoke 37, a coil 38, and a coil terminal 39.

A coil 38 is wound around the spool 31 between flanges 32 and 33 provided at both ends thereof, and an iron core 36 is inserted through a hollow hole 31a of the spool 31, with both ends 36a and 36b protruding, respectively.

The yoke 37 has upstanding pieces 37a and 37 provided at one end thereof.
b is the base portion 3 extending from the collar portion 32 of the spool 31;
They are inserted into the insertion holes 34a and 34b of No. 4, respectively, to protrude upward, and are opposed to the magnetic pole portions 36a, which are one ends of the iron cores 36, respectively.

Further, the yoke 37 has a two-pronged upright piece 37c provided on the other end thereof that is fitted into a fitting hole provided in the base portion 35 to protrude upward, and the iron core 36 is attached to the upright piece 37c. The other end 36b is fixed by caulking, welding, or the like.

The coil terminals 39.39 are inserted into through holes 34c and 35b provided in the base portions 34.35, respectively, and have their lower ends protruding from the lower surface of the base 2, and have their upper ends connected to the lead wires of the coil 38. It is connected and soldered.

Note that the stand 35 extending from the flange 33 is provided with a support shaft 35a that rotatably supports a card 40, which will be described later.

The contact drive card 40 consists of an annular frame 41,
This frame 41 is integrally connected to the movable block 42 by a movable block portion 42, approximately arch-shaped connecting portions 13.44 extending from both ends of the movable block 42, and connecting portions 43.44. It consists of a supporting part 45.

The movable block 42 has a permanent magnet 4 in its storage hole 42a.
The movable iron pieces 47a and 47b sandwiching 6 are housed and fixed.

The connecting portions 43, 44 have an arm portion 43a at their outer top.

44a, each having a substantially arch shape. Therefore, the respective vertical distances from the connecting parts 43, 44 to the center lines passing through the movable block 42 and the support part 45 decrease as the arm part 43a or 44a approaches the movable block 42 or the support part 45. There is. In addition,
The arm portion 43a holds the aforementioned connecting spring plate 18, while the arm portion 44a holds a holding portion 51d of an L-shaped driving piece 51, which will be described later.

Therefore, if the support hole 45a provided in the support part 45 is fitted to the support shaft 35a of the electromagnet device 30, the movable iron piece 4
7a is the magnetic pole part 36a of the iron core 36 and the upright piece 3 of the yoke 37
The movable iron piece 47b is located between the magnetic pole portion 36a of the iron core 36 and the upright piece 37b of the yoke 37, and faces the movable iron piece 47b so as to be removable and removable. do.

The drive converter 50 converts the rotational motion of the card 40 into a reciprocating motion and slides the insulating slider 24, so an L-shaped drive piece 51 bent in an abbreviated shape, a temporary spring 52,
A pair of positioning protrusions 8 a, 8 provided on the base 2
b, and a support beam K 8 c.

The L-shaped drive piece 51 has a tip portion 5 on one bent side that can be engaged with the above-mentioned insulating slider 24 and that protrudes toward the center.
A trident-shaped engagement portion 51C having a shape of 1a is provided, and a tip portion 51 extending straight on the other side of the bent side.
A clamping portion 51d having a diameter b is provided.

The spring plate 52 is bent to form the positioning protrusion 8a.

It has a planar shape that can be assembled between the positioning protrusions 8a and 8b, and when it is assembled between the positioning protrusions 8a and 8b, it constantly presses the back color part of the L-shaped drive piece 51 and supports it rotatably on a hinge. It is.

Therefore, after engaging the insulating slider 24 with the engaging portion 51c of the L-shaped drive piece 51 and positioning its center portion at the corner of the support protrusion 8c, the holding portion 51d is held between the arm portion 44a of the card 40. By bending the spring plate 52 and installing it between the positioning protrusions 8a and 8b, the L-shaped drive piece 5
1 is rotatably supported on a hinge. At this time, the tip portions 51a and 51b of the L-shaped drive piece 51 are the protrusions 4b provided on the base 2.

2a, respectively.

Note that the groove portion 5.6 is covered with a metal plate having a planar cross-shaped shape shown by the two-dot chain line in FIG. 1, and is magnetically shielded, and the base 2 is sealed with a cover (not shown).

Next, the operation of the high frequency relay I having the above-mentioned configuration will be explained.

FIG. 1 shows a neutral state, in which the card 40 has returned to its original state in the non-excited state, and the magnetic force of the permanent magnet 46 causes the movable iron piece 47a to
is attracted to the magnetic pole portion 36a of the iron core 36, and the movable iron piece 47b is attracted to the upright piece 37b of the yoke 37 to form a magnetic circuit.

Then, while the movable contact piece 14 of the first contact mechanism part 1O is separated from the fixed contact terminals 11 and 12, and the movable contact piece 16 is closed to the fixed contact terminal 12.13,
The movable contact piece 23 of the second contact mechanism section 20 is connected to the fixed contact terminal 2
It closed on 1.22.

Note that in the returned state, the tip end 51b of the L-shaped drive piece 51 is in pressure contact with the protrusion 2a provided on the side wall of the base 2.

Now, the movable iron piece 47a repels the magnetic pole part 36a of the iron core 36, and the movable iron piece 47b moves against the upright piece 37 of the yoke 37.
When the coil 38 is excited to repel the magnetic pole part 36a, the movable iron piece 47a repels the magnetic pole part 36a, and the upright piece 3 of the yoke 37
7a, and the movable iron piece 47b moves toward the yoke 3.
It is repelled by the upright piece 37b of No. 7 and attracted to the magnetic pole portion 36a of the iron core 36.

Therefore, the card 40 rotates in the clockwise direction in FIG.
6a to form a magnetic circuit.

As the card 40 rotates, the insulating slider l5,1
7 is guide i? +T3a, 3b, the movable contact piece 14 closes the fixed contact terminal 11.12, and the movable contact piece 16 separates from the fixed contact terminal 12.13.

On the other hand, as the card 40 rotates in the clockwise direction, the L-shaped driving piece 51 is held by the holding part 51d by the arm part 44a.
rotates counterclockwise in FIG. 1 about the corner of the support protrusion 8c as a fulcrum, and the insulating slider 24 engaged with the engaging portion 51c slides along the guide 171t4a, and the movable contact piece 23 is separated from the fixed contact terminals 21 and 22.

Then, when the excitation is released, the card 40 maintains its operating state due to the magnetic force of the permanent magnet 46.

In the operating state, the tip end 51a of the L-shaped drive piece 51 is in pressure contact with the protrusion 4b provided on the partition wall 4.

Next, when the coil 38 is energized in the opposite direction to that described above, the card 40 rotates counterclockwise in FIG. 1 and returns to the restored state, and even when the excitation is removed, the card 40 remains in the restored state.

In this embodiment, when the movable contact pieces 14.16 and 23 do not close the fixed contact terminals 11, 12.13 and 21°22, the movable contact pieces 14.16 and 23 close the grooves 5 and 6. Each contact is made with the protrusions provided on the surface, ensuring high isolation.

Further, in this embodiment, since the contact driving card 40 rotates parallel to the floor surface of the base 2, there is an advantage that the device can be made thinner.

In addition, in the above-mentioned embodiment, the case where the first contact mechanism section lO and the second contact mechanism section 20 are provided independently is shown, but this is not necessarily the case. For example, the first contact mechanism section 10 in the above-mentioned embodiment 10 fixed contact terminals 11 and a second contact mechanism section 2
0 fixed contact terminal 21 may be shared with one fixed contact terminal.

Further, the contact driving card does not necessarily have to be composed of an annular frame, and may be one in which the movable block and the support part are connected by at least one connecting part. Therefore, it goes without saying that the contact plate is not necessarily arranged in an oval shape.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention,
FIG. 1 is a plan view, FIG. 2 is an exploded perspective view, FIGS. 3 and 4 show an embodiment according to a conventional example, FIG. 3 is a plan view, and FIG. 4 is an exploded perspective view. 2...Base, 10...First contact mechanism section, 11゜1
2.13...Fixed contact terminal, l 4,16...Movable contact piece, 20...Second contact mechanism section, 21.22...Fixed contact terminal, 23...Movable contact piece, 30... - Electromagnetic device, 40... Contact drive card, 42... Movable block, 43.44... Connection portion, 43a, 44a...
Arm part, 45 - Support part.

Claims (1)

[Claims] (1) A relay that drives a contact mechanism with a contact drive card that rotates around a supporting part connected and integrated with a movable block that reciprocates based on excitation and demagnetization of an electromagnetic device as a fulcrum, the movable block and the A relay characterized in that the support part is connected and integrated with a substantially arch-shaped connecting part, and an arm part for driving the contact mechanism part is provided on the top of the connecting part.