JPH1116471A - Relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relay wherein the contact pressure is hard to disperse and an adjustment can be easily conducted in the event that an adjustment relative to a terminal imposed load is conducted. SOLUTION: In a movable contact spring 35 of an auxiliary contact block 16, one end is fixed by a rivet or the like on a side surface, on the side of a fixed terminal board 19, of a middle part of a movable terminal board 33, and a movable contact provided on a side surface near a free end is caused to make contact by elasticity with a fixed contact 19a provided on the other end of the fixed terminal board 19. Further, the other end of the movable terminal board 33 and the free end of the movable contact spring 35 are formed to have such a length as to confront a side surface of a manual lever part 21 of a movable frame 1 when the auxiliary contact block 16 is fitted into an auxiliary shell part 17, and the free end of the movable contact spring 35 makes elastic contact with an auxiliary contact driving part 21a formed on an end side surface of the manual lever part 21. When an adjustment of an imposed load is conducted, it is conducted by operating the manual lever part 21 such that an end of the movable terminal board 33 is pushed and deformed by the manual lever part 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay having a contact device for switching a load having a large inrush current of a capacitor load or a lamp load.

[0002]

2. Description of the Related Art Japanese Patent Application No. Hei 7-2
There is a relay as described in US Pat. In addition to the main contact block, this relay has an auxiliary contact block. This auxiliary contact block resiliently contacts a movable frame that opens and closes the main contact block, and the movable frame is attracted by an electromagnet device. When the main contact block is driven through the card by rotating the movable frame, the movable contact spring is pushed against the bias of the movable frame by the rotation of the movable frame, and the movable contact at the tip of the movable contact spring contacts the fixed contact. The movable frame is loaded with a spring load by a movable contact spring. Therefore, by adjusting the load applied by the movable contact spring, the terminal load of the relay can be adjusted. Conventionally, the terminal load of the relay has been adjusted by deforming the movable contact spring.

[0003]

When the load is adjusted using the movable contact spring of the auxiliary contact block as described above, it is necessary to largely deform the movable spring in order to cover the adjustment range of the applied load. . For that purpose, it is necessary to use a spring having a small spring coefficient. Also, the load range differs depending on whether the main contact block side is one-sided or two-sided, so the adjustment range is also greatly different.Therefore, parts of different materials are required, and the adjustment range is large, so the contact pressure fluctuation is large, There was a problem that load switching capacity and contact reliability varied.

In general, adjustment of the load is performed by bending a fixed terminal using a flexure spring. However, in this type of relay, the purpose is to adjust the load on the NO side. However, there is a problem that the above method cannot be adopted by the above adjustment method. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the inventions according to claims 1 to 4 is that the contact pressure hardly varies when adjusting the terminal load, and the adjustment is easy. To provide a relay that can be used.

It is an object of the present invention that the movable terminal plate of the auxiliary contact block used for adjusting the applied load is a common component for each of the single-cut and double-cut specifications where the load is large. To provide a relay that can be implemented. It is an object of the invention according to claims 6 and 7 to provide a relay in which the iron core of the electromagnet device has a good crimping condition and has no difference in magnetic characteristics between the magnetic pole surfaces on both sides of the magnetic pole portion of the iron core. To be.

An object of the present invention is to stabilize magnetic characteristics by preventing contact between the armature and a corner of the iron core where dripping occurs due to cutting of the iron core. To provide a relay that aims at.

[0007]

According to a first aspect of the present invention, there is provided an electromagnet block in which an electromagnet device for rotating a movable frame by attracting an armature provided on the movable frame to an iron core is provided on an electromagnet base; Combining a contact block incorporating a contact device into a contact base separate from the base, and an auxiliary contact block incorporated into the electromagnet base, positioning the end of the movable frame at the movable end side on one side of the electromagnet block, A contact block is coupled to one side of the movable frame of the electromagnet block where the movable end side is located, and the movable frame and a card provided in the contact block and rotating are mechanically coupled to each other. The auxiliary contact block includes a fixed terminal plate, a movable terminal plate fixed at one end substantially in parallel with the fixed terminal plate, and a movable terminal. A movable contact spring, one end of which is fixed near one end and a movable contact provided on the free end side is elastically contacted with the fixed contact of the fixed terminal plate, and the free end position of the movable terminal plate is freely set by the movable contact spring. The length of the movable terminal plate is set so as to be approximately the same as the end position, and the movable frame is pressed by the free end of the movable contact spring provided in the auxiliary contact block by the rotational movement of the movable frame to move the movable contact. An auxiliary contact drive unit is provided to be separated from the fixed contact, and the adjustment of the load is performed by deforming the movable terminal plate.

According to a second aspect of the present invention, in the first aspect of the invention, the movable frame is provided with a manual lever portion for rotating the movable frame from the outside, and the movable frame is rotated by the manual lever portion to be driven by the auxiliary contact drive portion. The movable terminal plate is made deformable. According to a third aspect of the present invention, in the first aspect of the present invention, a protrusion is provided on the movable terminal plate, and a window hole is provided on the electromagnet base so that the movable terminal plate can be deformed by operating the protrusion from outside. And

According to a fourth aspect of the present invention, in the first aspect of the present invention, each movable terminal plate is appropriately selected from a plurality of auxiliary contact blocks which are deformed and adjusted to correspond to different load loads. Features. According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the movable terminal plate is divided into two by forming a cutout on a substantially center line of a plate surface extending from the free end to the vicinity of one end to be fixed. When the contact block is a single-cut type, one of the two divided pieces is cut.

According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, the iron core is overlapped with two divided iron cores, and the corners of each of the divided iron cores generated at the time of punching on the overlapping side. It is characterized in that it is configured by arranging a drooling part. In the invention of claim 7, in the invention of claim 6, a projection is provided on one of the divided iron cores, and a hole for inserting the projection is provided on the other divided iron core. It is characterized by being deformed and caulked.

According to an eighth aspect of the present invention, in the first to fifth aspects of the present invention, a concave portion is formed at a portion corresponding to a tip corner of the iron core on the pole face of the armature in contact with the iron core. It is characterized by. According to the ninth aspect of the present invention, in the first to fifth aspects of the present invention, the protrusion contacting the side surface of the iron core is provided on the armature so that the tip corner of the iron core does not contact the magnetic pole surface of the armature contacting the iron core. It is formed on the pole face.

According to a tenth aspect of the present invention, in the first to fifth aspects of the present invention, the tip of the iron core is thinned so that the corner of the tip of the iron core that contacts the pole face of the armature that contacts the iron core does not contact. It is characterized by comprising as a part.

[0013]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. (Embodiment 1) As shown in FIG. 1, the relay of the present invention is configured by combining an electromagnet block 5 and a contact block 8 which is separate from the electromagnet block.

As shown in FIG. 2, the electromagnet block 5 is an electromagnet device 3 in which the movable frame 1 is attracted to the iron core 2 and moves in and out of contact.
The contact block 8 is constructed by incorporating a contact device 7 into a contact base 6 separate from the electromagnet base 4 as shown in FIG. And a separate contact block 8
The contact switching of the contact device 7 is performed by driving the movable frame 1 of the electromagnet device 3 in a state in which is combined.

The electromagnet base 4 is in the shape of a square tube or a square tube with a bottom (ie, a box shape with an open end), and in the embodiment shown in FIG. That is, a flat rectangular cylindrical auxiliary outer shell 17 is formed integrally with one piece of the outer shell main body 15 having a bottomed rectangular cylindrical shape. A terminal insertion hole 32 is formed in a corresponding portion. The open end side of one end of the rectangular magnet-shaped electromagnet base 4 is fitted to a fitting portion 12 of a square tubular contact base 6 of a contact block 8 described later.
Is a square tubular fitting part 11 for fitting.
An engagement hole 14 is formed in the fitting portion 11. Engagement hole 14
Are provided on at least one or more of the four rectangular cylinder-shaped pieces, and may be provided on the four pieces of the rectangular cylindrical fitting portion 11, respectively, or may be provided on two opposed pieces as in the embodiment of FIG. It may be provided.

As shown in FIG. 1, a notch for inserting a later-described manual lever portion 21 is provided at one end on the opening end side of the outer shell main body 15 and the auxiliary outer shell 17 at positions vertically opposed to each other. 92, 92b are provided. As shown in FIG. 1, the electromagnet device 3 includes a coil bobbin 30, an iron core 2, a yoke 22, an armature 24 made of a magnetic material, a permanent magnet 40, a movable frame 1, a silent damper 49, and the like.

The yoke 22 includes a main yoke 23 made of a magnetic material constituting the main body of the yoke 22 and a side yoke 25 made of a pair of magnetic materials having a magnetic pole surface facing the armature 24. Here, in the embodiment shown in FIG. 1, the main yoke 23 has a U-shape, and the main yoke 23 is provided with a hole 22c into which the rear end 2b of the iron core 2 is fitted and caulked. Shafts 51 for rotatably supporting bearings 54 of a pair of arms 28 of the movable frame 1 described later are provided on the outer surfaces of the U-shaped opposed pieces of the main yoke 23, respectively. Furthermore, this main yoke 2
A pair of engaging grooves 26 is formed on both sides of the distal end surface of the two opposed pieces having a U-shape of 3, and an engaged portion 27 that engages with the engaging groove 26 is provided on the side yoke 25, By engaging the engaged portion 27 with the engaging groove portion 26, the side yokes 25 are attached to both sides of the distal end portion of the U-shaped main yoke 23.

The T-shaped iron core 2 is simultaneously molded and inserted into the coil bobbin 30 when the coil bobbin 30 is integrally molded with a synthetic resin. Both ends of the iron core 2 protrude from the coil bobbin 30. A flange 77 is formed on both sides of the coil bobbin 30, and one flange 77 is provided with a coil terminal mounting recess 93, and the coil terminal 62 for connecting the tip of the winding 94 to the coil terminal mounting recess 93.
Is fitted.

The iron core 2 is simultaneously formed integrally with the coil bobbin 30 as described above, and both ends of the iron core 2 protrude from the coil bobbin 30, but as shown in FIG. Projections 61 project from the coil bobbin 30 on both upper and lower sides of the projecting portion of the T-shaped tip 2a. One of the protrusions 61 is a mounting base 5 for the rubber silent damper 49.
0 is projected forward, and a silent damper 49 is mounted on the mounting base 50 so as to be pressed by a dambar pressing plate 49a. By forming the mounting base 50 of the silent damper 49 integrally with the coil bobbin 30 in this manner,
The positional accuracy of the silent damper 49 is increased, the buffer can be stably buffered, and the assembly process can be simplified.

The movable frame 1 has a substantially U-shape in which both arms 28 project from the central piece 1b, and a bearing 54 is provided at the tip of the arms 28. The bearing portion 54 is rotatably supported by shaft portions 51 provided on both sides of the main yoke 23 constituting the main body of the yoke 22. Movable frame 1
A fitting recess (not shown) is formed on the inner side surface of the central piece 1b of this embodiment. The tip of the block in which the permanent magnet 40 is interposed between the tips of the pair of armatures 24 is formed in the fitting recess. It is fitted and adhered and fixed with an adhesive. A residual plate is attached to the magnetic pole surface of the armature 24.

The movable frame 1 is moved from the central piece 1b to the manual lever 2
1 protrudes upward in FIG. Further, two projections, a first projection 63 and a second projection 64, are provided so as to project from the central piece 1b in the direction opposite to the direction in which the arm 28 projects. As described above, the electromagnet device 3 configured by assembling the coil bobbin 30, the iron core 2, the yoke 22, the armature 24, the permanent magnet 40, the movable frame 1, the silent damper 49, and the like has a rectangular cylindrical outer shape of the electromagnet base 4. The shell body 15 is fitted into the interior through a window hole and is housed. In a state where the electromagnet device 3 is fitted and mounted on the electromagnet base 4 as described above, as shown in FIG.
2 shows a coil terminal 62 of the coil bobbin 30 of the electromagnet device 3
Project through to the outside.

When the electromagnet device 3 is fitted and mounted on the electromagnet base 4, the manual lever 21 is inserted through the notches 92a and 92b as shown in FIG. It protrudes. By operating the manual lever portion 21 from the outside, the movable frame 1 is rotated from the outside, and the auxiliary movable contact spring 35 of the auxiliary contact block 16 described later can be opened and closed.

An auxiliary contact block 16 is fitted into the cylindrical auxiliary outer shell 17 attached to the outer shell main body 15 through an opening. As shown in FIG. 1, the auxiliary contact block 16 has a base 44 made of synthetic resin, a movable terminal plate 33 made of a conductive metal plate, a fixed terminal plate 19 made of a conductive metal plate, and a conductive material having spring elasticity. The movable contact spring 35 is formed of a conductive metal plate. The movable terminal plate 33 and the fixed terminal plate 19 are formed on a base 44 made of synthetic resin, and the rear portions are formed in fitting grooves 16a and 16b formed on the base 44. It is fitted and arranged substantially parallel, and its rear end protrudes outward. The fixed terminal plate 19 has a fixed contact 19a fixed to the side surface of the movable terminal plate 33 at the tip.

The movable contact spring 35 has one end connected to the movable terminal plate 33.
The movable contact 35a provided on the side near the free end and fixed at the other end of the fixed terminal plate 19, as shown in FIG.
9a by elasticity. And the movable terminal plate 3
The other end of the movable contact spring 3 and the free end of the movable contact spring 35 face the side surface of the manual lever portion 21 inserted into the cutout portions 92a and 92b when the auxiliary contact block 16 is fitted into the auxiliary outer shell portion 17. The free end of the movable contact spring 35 is in elastic contact with an auxiliary contact drive portion 21a formed on the tip side surface of the manual lever portion 21.

When the auxiliary contact block 16 is fitted into the auxiliary shell 17 and assembled, the manual lever 2
The free end of the movable contact spring 35 of the auxiliary contact block 16 is pushed by the auxiliary contact drive portion 21a of the manual lever portion 21 by rotating the movable frame 1 by operating the portion of the distal end of the movable member 1 protruding outside. Thus, the movable contact 35a of the movable contact spring 35 can be separated from the fixed contact 19a.

That is, in the present embodiment, the manual operation of the movable frame 1 of the electromagnet device 3 and the opening and closing of the contacts of the auxiliary contact block 16 can be performed by operating the manual lever portion 21 from outside. ing. Contact block 8
Is a square tubular shape (in the embodiment, a square tubular shape) as shown in FIG.
A contact device 7 is provided inside a contact base 6 having the above structure. At one end of the rectangular cylindrical contact base 6, a square cylindrical fitting part 12 for fitting with the fitting part 11 at one end of the square cylindrical electromagnet base 4 is formed. The other end of the contact base 6 is fitted with the fitting portion 1 so as to be able to fit with the fitted portion 12 of the contact base 6 of another contact block 8.
1 'is provided. Then, the fitted portion 12, the fitting portion 1
1 'is provided with an engaging projection 13 and the other is provided with an engaging hole 14'.
Is formed. The interior of the contact block 8 is divided into two chambers by a partition plate 101.

The contact device 7 comprises a movable terminal portion 76 and a fixed terminal portion 78. As shown in FIGS. 1 and 3, the movable terminal portion 76 is formed by fixing a main movable spring 81 provided with a main movable contact 80 to a movable terminal 79 and an arc movable spring 83 provided with an arc movable contact 82. And also
As shown in FIG. 1 and FIG.
4 a main fixed contact 85 facing the main movable contact 80
And an arc fixed contact 86 facing the arc movable contact 82
Are provided.

A movable terminal 76 is provided in one of the chambers of the contact base 6 partitioned by the partition plate 101. Movable terminal 7
Reference numeral 9 denotes a U-shape having opposing projections on both sides. A main movable spring 81 provided with a main movable contact 80 is fixed to one of the opposing projections, and an arc movable contact 82 is attached to the other projection. A movable terminal portion 76 having a U-shape as a whole is formed by fixing the provided arc movable spring 83. The braided wire 91 having one end connected to the conductive plate 106 on the main movable contact 80 side and the other end connected to the movable terminal 79 is arranged along the main movable spring 81 of the U-shaped movable terminal portion 76. is there.

The fixed terminal 84 has a U-shape. A main fixed contact 85 is provided on one side, and an arc fixed contact 86 is provided on the other side. 8
4 is inserted from the other chamber partitioned by the partition plate 101 of the electromagnet base 4, and both side pieces of the fixed terminal 84 are separated from the partition plate 1.
The main movable contact 80 and the main fixed contact 85 are opposed to each other, and the arc movable contact 82 and the arc fixed contact 86 are opposed to each other. is there.

Here, the arc movable contact 82 and the arc fixed contact 86 constitute an arc contact 67. The arc movable contact 82 and the arc fixed contact 86 are both formed of a material having good welding resistance. It is. Further, the main movable contact 80 and the main fixed contact 85 are used to form the main contact 68.
The main movable contact 80 and the main fixed contact 85 are both formed of a material having good contact resistance performance.

A card 10 is rotatably mounted in one of the compartments of the contact base 6 partitioned by the partition plate 101. In the card 10, a hole 115 at one end of the card 10 is rotatably attached to a shaft 114 protruding from the partition plate 101. Thus, the square cylindrical fitting portion 11 of the electromagnet base 4
A separate contact base 6 is joined to the electromagnet base 4 by fitting a square tube-shaped fitting portion 12 of the contact base 6 to the engaging base 13 and engaging the engaging projection 13 with the engaging hole 14. It is.

When the separate contact base 6 is joined to the electromagnet base 4 as described above, the movable frame 1 provided on the electromagnet block 5 for rotational movement and the card 10 provided on the contact block 8 for rotational movement are: They are connected mechanically.
That is, as described above, the first protrusion 63 and the second protrusion 64 are protruded from the center piece 1b, which is the rotating tip of the movable frame 1. The card 10 has the first protrusion 63.
And a second acting portion 66 acted on by the second protrusion 64.

Here, the arc contact 67 of the contact device 7 is switched from off to on when the first operating portion 65 is actuated by the first projecting portion 63, and the first contact by the first projecting portion 63.
The main contact 68 is set to be turned on when the action on the action section 65 is released.
It is set to be switched from off to on when the action portion 66 is actuated, and to be turned off when the action of the second projection portion 64 on the second action portion 66 is released. The timing of switching from ON to OFF is delayed from the timing of switching from OFF to ON of the arc contact 67, and the timing of switching from ON to OFF of the arc contact 67 is determined from the timing of switching from ON to OFF of the main contact 68. Is also set to delay.

In other words, the movable frame 1 is configured such that one of the pair of armatures 24, each of which has a different magnetic pole surface with the permanent magnet 40, is energized to the windings of the electromagnet device 3 by reverse excitation, and the magnetic pole surface of the iron core 2 and The movable frame 1 is rotated by the suction of the side yoke 25, the card 10 is rotated by the movement of the movable frame 1 to drive the contact device 7, and the movable contact spring 35 of the auxiliary contact block 16 is rotated by the rotation of the movable frame 1. By pushing or returning the movable contact 35a and the fixed contact 19a.

By the way, the square cylindrical fitting part 12 of the contact base 6 is fitted to the square cylindrical fitting part 11 of the electromagnet base 4, and the engaging projection 13 is engaged with the engaging hole 14. By doing so, a separate contact base 6 is joined to the electromagnet base 4,
A movable frame 1 which is provided on an electromagnet block 5 and performs a rotary motion;
A one-sided relay is configured by mechanically connecting the card 10 provided in the contact block 8 and performing a rotating motion. In this embodiment, two sets of the contact blocks 8 are connected as shown in FIG. To form a double-cut type.

That is, the square tube-shaped fitting portion 12 of another contact block 8 is fitted into the square tube-shaped fitting portion 11 ′ of the contact block 8, and the engaging projection 13 is engaged with the engaging hole 14. The contact block 8 can be overlapped and detachably joined by engaging with the '. Here, an insulating plate 118 as shown in FIG. 1 is interposed between the two contact blocks 8 and joined. An engagement protrusion 13 is provided on the contact block 8 located on the outside.
Attached insulating plate 118 'is provided to engage the engaging projection 13 with the engaging hole 14 of the contact block 8 located on the outside. In FIG. 1, reference numeral 37 denotes an electromagnetic iron piece for driving the arc by suction.

The card 10 has another contact block 8.
Is provided with a hole 72 for connection with the card 10 provided in the device by a pin 71. The partition plate 101 and the insulating plate 118 provided on each contact base 6 have holes 11 respectively.
9, 120 are provided. Then, the pin 71 is inserted from the hole 72 of one card 10 and the pin 71 is inserted into the hole 11.
9 and 120 are inserted into the holes 72 of the other card 10.

In this embodiment, when the movable frame 1 rotates, the movable contact spring 35 of the auxiliary contact block 16 is pushed against its elasticity, and the movable contact spring 35 contacts the movable terminal plate 33. Therefore, as shown in FIG.
Is determined by the position of Therefore, in this embodiment, when adjusting the load load as a relay, the manual lever 21
Is operated to push and deform the tip of the movable terminal plate 33 by the auxiliary contact driving portion 21a of the manual lever portion 21. In this case, the amount of bending of the movable terminal plate 33 may be small, so that the contact pressure of the movable contact spring 35 is hardly affected, and the contact pressure characteristics hardly vary. In FIG. 5, the load due to the movable terminal plate is shown, and the required adjustment range is shown.

The structure of the auxiliary contact block 16 is as follows.
As shown in FIG. 6, a fixed terminal plate 19, a movable contact spring 35, and a movable terminal plate 33 may be provided on a synthetic resin base 44 having arm pieces 44a, 44a protruding on both sides. (Embodiment 2) In Embodiment 1 described above, the movable terminal plate 33 of the auxiliary contact block 16 is deformed by the manual lever portion 21 to adjust the applied load, but this embodiment is shown in FIG. A projection 33a for adjusting operation protrudes from the upper edge of the movable terminal plate 33 as shown in FIG.
The movable terminal plate 33 is deformed from the outside through the window hole 18 pierced, so that the applied load can be adjusted.

Since the other structure is the same as that of the first embodiment, only an exploded perspective view is shown. Members having the same structure and the same role are denoted by the same reference numerals and symbols, and the description is omitted. (Embodiment 3) In Embodiments 1 and 2, the manual lever 2
1 or the movable terminal plate 33 of the auxiliary contact block 16 is deformed by using the adjusting operation projection 33a to adjust the applied load. In the present embodiment, as shown in FIG. A plurality of types of auxiliary contact blocks 16A... Classified in advance with respect to variations in 3 are prepared, and these auxiliary contact blocks 16A. The block is selected, and the adjustment is simplified.

Since the other construction is the same as that of the first embodiment, only an exploded perspective view is shown, and members having the same construction and the same role are given the same reference numerals and symbols, and their explanation is omitted. (Embodiment 4) Although the above embodiments 1 to 3 are of the double-cut type, in the case of the single-cut type, the applied load naturally differs greatly.
In this embodiment, as shown in FIG. 9A, the movable terminal plate 33 is cut into two divided pieces 33A and 33B which are cut vertically from the tip and are vertically parallel to each other. 9B is used for the auxiliary contact block 16, and in the case of a single-cut relay, one piece is cut as shown in FIG. 9B, and in this case, 33A is cut to move as shown in FIG. 9C. By forming the terminal plate 33 and using the movable terminal plate 33, it is possible to adjust the load applied to the one-sided relay.

That is, the movable terminal plate 33 can be held as a common part of the double-cut type and single-cut type relays to reduce the cost. FIG. 10 shows a single-cut relay using the movable terminal plate 33 of the present embodiment.
Therefore, members having the same configuration and the same role are denoted by the same reference numerals and symbols, and description thereof is omitted.

Further, it goes without saying that the movable terminal plate 33 of this embodiment can be used not only in the first to third embodiments but also in each of the embodiments described later. (Embodiment 5) The iron core 2 of the electromagnet device 3 used in the above Embodiments 1 to 4 is formed by punching out electromagnetic soft iron. There is a problem that a large R-plane is formed at the corner.

For this reason, when the rear end 2b of the iron core 2 is swaged and fixed to the hole 22c of the main yoke 22, there is a problem that a good swaging strength cannot be obtained. Since the sizes of the surfaces are different, the magnetic characteristics are different between the magnetic pole surfaces on both sides of the T-shaped tip 2a. In other words, there is a problem that the magnetic (attraction) characteristics of NO (normally open side) and NC (normally closed side) of the relay are different.

Therefore, in this embodiment, as shown in FIGS. 11 and 12, two divided iron cores 2A. 2B are stacked and fixed to form the iron core 2, and the divided iron cores 2A. 2B is used in which the punching direction at the time of punching is changed.
And is fixed to the coil bobbin 30 so that the corner where the crack occurs is on the inside. Therefore, iron core 2
The corners of the magnetic pole faces on both sides of the T-shaped tip 2a of the iron core 2 composed of A and 2B can be made sharp edges, and the magnetic pole faces on both sides are symmetrical, and the relay is NO (normally open side). The difference in magnetic (attraction) characteristics between the NC (normally closed side) and the NC (normally closed side) can be eliminated. The hole 22 of the main yoke 22
Even when the rear end 2b is inserted into and fixed by caulking, it is not affected by the R surface formed by anybody, and good crimping strength can be obtained sufficiently without increasing the length of the rear end 2b. Will be.

Since the other structure is the same as that of the first embodiment, the members having the same structure and the same role are given the same numbers and the same symbols, and the explanation is omitted. Embodiments 2, 3, and 4
Of course, the iron core configuration of the present embodiment may be adopted. (Embodiment 6) In this embodiment, when the divided iron cores 2A and 2B are overlapped, for example, two projections 69 are provided on the center piece of the 2A, and a hole 70 for inserting the projection 69 is provided on the other.
As shown in FIGS. 3 to 15, the projection 69 is inserted into the hole 70, the tip of the projection 69 is deformed at the wide diameter portion 70 a of the hole 70, and the two divided iron cores 2 </ b> A, 2 </ b> B are fixed by caulking at the deformed portion 69 a. Are fixed to each other to form the iron core 2.

Since other structures are the same as those of the first and fifth embodiments, members having the same structure and the same role are denoted by the same reference numerals and symbols, and description thereof is omitted. Of course, Embodiments 2 and 3,
4 may of course adopt the iron core configuration of the present embodiment. (Embodiment 7) In Embodiments 5 and 6, two divided iron cores 2A and 2B are overlapped to prevent inconvenience in magnetic characteristics due to the occurrence of an R surface at a corner portion due to the punching of the iron core. In this embodiment, as shown in FIG. 16, a vertical recess 38 is provided on the surface of the armature 24 facing the magnetic pole surface of the iron core 2 as shown in FIG. The corner 39 which is the tip side edge of the T-shaped tip 2a of the iron core 2 is prevented from coming into contact, eliminating the influence of the magnetic characteristics due to the R surface of this corner 39, and the contactors 24 on both sides and the iron core 2 Under the same conditions of contact with the magnetic pole surface, NO (normally open side) and N
It is characterized in that the magnetic (attraction) characteristics are no longer different from C (normally closed side).

Since the other structure is the same as that of the first embodiment, the members having the same structure and the same role are given the same numbers and the same symbols, and the explanation is omitted. Embodiments 2, 3, and 4
Of course, the armature configuration of the present embodiment may be adopted. (Eighth Embodiment) In the eighth embodiment, a vertical recess 38 is provided on the surface of the armature 2 facing the magnetic pole surface of the iron core 2, and the T
Although the corner 39 which is the front side edge of the mold tip 2a is prevented from contacting, in the present embodiment, as shown in FIG. 18, the surface of the armature 2 facing the magnetic pole surface of the iron core 2 as shown in FIG. A vertical projection 41 is formed, and as shown in FIG.
The corner 39 of the T-shaped tip 2a is not in contact with each other, so that the influence of the magnetic characteristics by the R surface of the corner 39 is eliminated, and the contact state between the contactors 24 on both sides and the magnetic pole surface of the iron core 2 is the same. The relay is characterized in that the difference in magnetic (attraction) characteristics between NO (normally open side) and NC (normally closed side) is eliminated. The rising of the suction force can be suppressed by the attraction between the convex portion 41 and the iron core 2, and thus no rescheduling plate is required.

Since the other structure is the same as that of the first embodiment, the members having the same structure and the same role are given the same numbers and the same symbols, and the explanation is omitted. Embodiments 2, 3, and 4
Of course, the armature configuration of the present embodiment may be adopted. Embodiment 9 In Embodiments 7 and 8, both the armature 24 is provided with a concave portion 38 or a convex portion 41 so as to avoid contact between the corner 39 of the iron core 2 and the armature 2. , FIG. 2
As shown in FIG. 0, the thickness of the tip portion of the T-shaped tip 2a of the iron core 2 is reduced to form a thin portion 2c, and as shown in FIG. The contact between the contactors 24 on both sides and the magnetic pole surface of the iron core 2 is set to the same condition by eliminating the influence of the magnetic characteristics due to the R surface of the corner portion 39 so as not to contact, and the relay is NO (normally open side). And the NC (normally closed side) are characterized in that the magnetic (attraction) characteristics are no longer different. In the case of the present embodiment, since the operation can be performed without changing the shape of the armature 24, the armature 24 can be manufactured by flat pressing, and the dimensional management is easy as in the first to sixth embodiments.

Since the other structure is the same as that of the first embodiment, the members having the same structure and the same role are given the same numbers and the same symbols, and the explanation is omitted. Embodiments 2, 3, and 4
Of course, the armature configuration of the present embodiment may be adopted.

[0051]

According to a first aspect of the present invention, there is provided an electromagnet block in which an electromagnet device for rotating a movable frame by attracting an armature provided on the movable frame to an iron core is incorporated in an electromagnet base. Combining a contact block incorporating a contact device on the body contact base and an auxiliary contact block incorporated into the electromagnet base, positioning the end of the movable frame at the movable end on one side of the electromagnet block, A contact block is coupled to one side of the movable frame where the movable end is located, and the movable frame is mechanically coupled to a rotating card provided in the contact block, and is linked with the rotational movement of the movable frame. The auxiliary contact block has a fixed terminal plate, a movable terminal plate fixed at one end substantially parallel to the fixed terminal plate, and a portion near the one end of the movable terminal plate. To A movable contact spring having a fixed end and a movable contact provided on the free end side elastically contacting the fixed contact of the fixed terminal plate is provided, and the free end position of the movable terminal plate is substantially the same as the free end position of the movable contact spring. The length of the movable terminal plate is set so that it is at the position, and the movable frame is rotated by the movable frame to push the free end of the movable contact spring provided on the auxiliary contact block to separate the movable contact from the fixed contact. An auxiliary contact drive unit is provided for adjusting the applied load by deforming the movable terminal plate. Therefore, the applied load can be adjusted only by deforming the movable terminal plate with a small bending amount. Since the movable contact spring is not deformed, there is an effect that the contact pressure hardly varies due to adjustment.

According to a second aspect of the present invention, in the first aspect of the present invention, the movable frame is provided with a manual lever portion for rotating the movable frame from the outside, and the movable frame is rotated by the manual lever portion, and the auxiliary contact drive portion is used. Since the movable terminal plate is made deformable, the movable terminal plate can be easily deformed only by operating the manual lever portion, so that the load can be easily adjusted.

According to a third aspect of the present invention, in the first aspect of the present invention, a projection is provided on the movable terminal plate, and a window hole is provided on the electromagnet base so that the movable terminal plate can be deformed by operating the projection from outside. Therefore, the movable terminal plate can be deformed by using the projection from the outside of the electromagnet base, so that the load can be easily adjusted. According to a fourth aspect of the present invention, in the first aspect of the present invention, each movable terminal plate is appropriately selected from a plurality of auxiliary contact blocks deformed and adjusted so as to correspond to different load loads.
By simply selecting the auxiliary contact block to be used, it is possible to obtain a relay in which the optimal load is adjusted, and there is an effect that adjustment can be eliminated.

According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the movable terminal plate is formed by forming a cut groove substantially on the center line of the plate surface extending from the free end to the vicinity of one end to be fixed. When the contact block is a single-cut type, the contact block is formed by cutting one of the two split pieces. Therefore, the same movable terminal plate as a component common to the single-cut relay and the double-cut relay having a greatly different load amount. There is an effect that can be used.

The invention of claim 6 is the invention of claims 1 to 5
In the invention according to the invention, the iron core is formed by stacking two divided iron cores and arranging the drooping portions of the corners of each of the split iron cores generated at the time of punching on the overlapping side. No sharpness appears in the part due to the punching process, and the sharp corner can be formed. Therefore, the magnetic characteristics (attraction characteristics) of the armature with respect to the magnetic pole surfaces on both sides of the iron core are not different and are symmetrical. There is an effect that the magnetic characteristics of NO (normally open side) and NC (normally closed side) do not change. In addition, when the iron core is caulked and fixed to the yoke, nobody appears at the caulked portion, and good caulking strength is obtained. can get.

According to a seventh aspect of the present invention, in the invention of the sixth aspect, a projection is provided in one of the divided iron cores, and a hole is provided in the other divided iron core to allow the projection to penetrate. Since the protrusion tip is deformed and caulked and fixed, in addition to the effect of the invention of claim 6, the divided iron cores can be fixed without using fixing means such as an adhesive or a fixing pin of another member,
In addition, there is an effect that positioning can be performed only by inserting the projection into the hole.

The invention of claim 8 is the first to fifth aspects of the present invention.
In the invention of the present invention, since the concave portion is formed in a portion corresponding to the tip corner of the iron core on the pole face of the armature in contact with the iron core,
It is possible to avoid the influence of corner drooping caused by the iron core punching process. Therefore, the magnetic characteristics (attractive characteristics) of the armature with respect to the magnetic pole surfaces on both sides of the iron core are not different and are symmetrical.
As a result, there is an effect that the magnetic characteristics of NO (normally open side) and NC (normally closed side) of the relay do not change.

According to a ninth aspect of the present invention, in the first to fifth aspects of the present invention, the protrusion contacting the side surface of the iron core so that the corner of the tip of the iron core does not contact the magnetic pole surface of the armature contacting the iron core. Since it is formed on the magnetic pole surface of the armature, in addition to the effect of the eighth aspect of the present invention, it is possible to suppress the rise of the attraction force, and thus it is possible to eliminate the rest plate.

According to a tenth aspect of the present invention, in the first to fifth aspects, the tip of the iron core is thinned so that the corner of the tip of the iron core in contact with the magnetic pole surface of the armature in contact with the iron core does not contact. Since it is formed as a part, in addition to the effect of the invention of the eighth aspect, there is an effect that the armature can be formed by flat pressing for which dimensional control is easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of Embodiment 1 of the present invention.

2 (a) is a front sectional view, FIG. 2 (b) is a left side view, FIG. 2 (c) is a right side view, and FIG. 2 (d) is a partially broken plane. FIG.

3 (a) is a left side view, FIG. 3 (b) is a front view, FIG. 3 (c) is a right side view, FIG. 3 (d) is a plan view, (e) is a bottom view.

FIG. 4 is a front view of a relay configured by combining the above-described electromagnet block and contact block.

FIG. 5 is an explanatory diagram of adjustment of a load applied in the embodiment.

6A and 6B show examples of another auxiliary contact block used in the embodiment, FIG. 6A is a front view, FIG. 6B is a left side view,
(C) is a right side view, and (d) is a plan view.

FIG. 7 is an exploded perspective view of Embodiment 2 of the present invention.

FIG. 8 is an exploded perspective view of Embodiment 3 of the present invention.

FIG. 9 is an explanatory view of use of a movable terminal plate according to a fourth embodiment of the present invention.

FIG. 10 shows an electromagnet block of a single-cut relay using the above movable terminal plate, wherein (a) is a front sectional view,
(B) is a left side view, (c) is a right side view,
(D) is a top view which can be partially broken.

FIG. 11 is an exploded perspective view of Embodiment 4 of the present invention.

FIG. 12 is an explanatory diagram of a main part of the above.

FIG. 13 is an exploded perspective view of Embodiment 5 of the present invention.

FIG. 14 is an explanatory diagram of a main part of the above.

FIG. 15 is an enlarged sectional view of a main part of the above.

FIG. 16 is an exploded perspective view of Embodiment 6 of the present invention.

FIG. 17 is an explanatory diagram of a main part of the above.

FIG. 18 is an exploded perspective view of Embodiment 7 of the present invention.

FIG. 19 is an explanatory diagram of a main part of the above.

FIG. 20 is an exploded perspective view of Embodiment 8 of the present invention.

FIG. 21 is an explanatory diagram of a main part of the above.

[Explanation of symbols]

 Reference Signs List 1 movable frame 2 iron core 3 electromagnet device 4 electromagnet base 5 electromagnet block 6 contact base 7 contact device 8 contact block 10 card 15 outer shell main body 16 auxiliary contact block 19 fixed terminal plate 19a fixed contact 33 movable terminal plate 35 movable contact spring 21 Manual Lever 21a Auxiliary Contact Drive 22 Yoke 23 Main Yoke 24 Armature 25 Side Yoke 44 Base

Claims (10)

[Claims] An electromagnet block in which an electromagnet device for rotating a movable frame by attracting an armature provided on a movable frame to an iron core is incorporated in an electromagnet base, and a contact device is provided on a contact base separate from the electromagnet base. And the auxiliary contact block incorporated into the electromagnet base are combined, and the end of the movable frame on the movable end side of the electromagnet block is positioned on one side of the electromagnet block. A contact block is connected to one side where the end is located, and the movable frame and the card that rotates in the contact block are mechanically connected, and the contact device is opened and closed by a card that is linked to the rotational movement of the movable frame. The auxiliary contact block has a fixed terminal plate, a movable terminal plate having one end fixed substantially in parallel with the fixed terminal plate, and a free end having one end fixed near one end of the movable terminal plate. And a movable contact spring in which the movable contact provided on the movable contact spring is elastically contacted with the fixed contact of the fixed terminal plate, and the movable terminal is set so that the free end position of the movable terminal plate is substantially the same as the free end position of the movable contact spring. The length of the plate is set, and the movable frame is provided with an auxiliary contact drive unit that drives and drives the free end of the movable contact spring provided in the auxiliary contact block by rotating the movable frame to separate the movable contact from the fixed contact. A relay, wherein the load is adjusted by deforming a movable terminal plate. 2. The movable frame is provided with a manual lever portion for rotating the movable frame from the outside, and the movable frame is rotated by the manual lever portion so that the movable terminal plate can be deformed by the auxiliary contact driving portion. The relay of claim 1, wherein 3. The relay according to claim 1, wherein a projection is provided on the movable terminal plate, and a window hole is provided on the electromagnet base so that the projection can be deformed by operating the projection from outside. 4. The method according to claim 1, wherein each movable terminal plate is appropriately selected from a plurality of auxiliary contact blocks deformed and adjusted to correspond to different load loads.
The described relay. 5. A movable terminal plate is divided into two by forming a cutout on a substantially center line of a plate surface extending from a free end of the movable terminal plate to the vicinity of one end to be fixed. 5. The relay according to claim 1, wherein one of the divided pieces is cut. 6. An iron core, wherein two divided iron cores are overlapped,
The relay according to claim 1, wherein the overlapping portions are formed by arranging a drooping portion of a corner of each divided iron core generated at the time of punching. 7. A structure in which a projection is inserted into one of the divided iron cores and a hole is inserted into the other divided iron core so that the projection is inserted into the hole when the projections are overlapped and the tip of the projection is deformed and caulked and fixed. The relay according to claim 6, wherein: 8. The relay according to claim 1, wherein a recess is formed in a portion of the pole face of the armature in contact with the iron core, the portion corresponding to a corner of the tip of the iron core. 9. The magnetic pole face of the armature is formed with a projection that contacts the side face of the iron core so that the corner of the tip of the iron core does not contact the magnetic pole face of the armature that contacts the iron core. The relay according to claim 1, wherein: 10. The iron core according to claim 1, wherein a tip portion of the iron core is formed as a thin portion so that a corner of the iron core in contact with a magnetic pole surface of the armature in contact with the iron core does not contact. Relay.