JPS61151942A - Relay - Google Patents

Abstract

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

Description

[Detailed description of the invention] 〔Technical field〕 This invention relates to relays.

[Background technology]

A relay that receives ON/OFF signals from a remote control switch to open and close a power supply circuit of a load is used to remotely control the load. If you use such relays, you can turn multiple (1m) remote control switches into one relay to open and close the load power supply circuit at multiple locations, or collect the relays for each load in one location. It is very convenient because it allows you to centrally monitor the load, etc. Also, since the remote control switch is isolated from the load power supply circuit, accidents such as electric shock are eliminated. Conventionally, multi-pole relays that control multiple load circuits simultaneously are integrated with multiple single-pole relays that can control only one load circuit, and electromagnetic devices are arranged in parallel. However, this relay was prone to variations in operation between electromagnetic devices, which led to problems such as variations in contact closing times and time differences.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a multi-polar relay that does not have different contact closing times or a time difference.

[Disclosure of the invention]

In order to achieve the above object, the inventors conducted extensive studies and completed this invention.

This invention has an electromagnetic device in which a current can flow in forward and reverse directions, a main contact mechanism for opening and closing a load circuit, and an electromagnetic device whose respective contacts are operated by the action of this electromagnetic device. The main contact mechanism and the auxiliary contact mechanism are equipped with a movable plunger whose tip is pivoted to move forward and backward in accordance with the forward and reverse current flowing through the electromagnet device. a movable contact facing the body, the main contact mechanism having a movable main contact near one end and moving forward and backward as the movable body rotates forward and backward;
It is composed of one terminal board that connects to the movable main contact and connects the load circuit, and the other terminal board that has the fixed main contact, and as the plunger moves forward and backward, the movable body moves forward and backward. A relay that opens and closes a load circuit and switches the current direction of an electromagnetic device by rotating, the relay having: a relay located on the side of the movable body and the main contact mechanism;
A separate movable body and main contact mechanism are provided, and the former movable body has the same rotation center as the latter movable body, and is characterized in that they are connected by a single connecting rod. Its gist is the relay. Hereinafter, an embodiment thereof will be described in detail based on the accompanying drawings.

As shown in FIGS. 1 and 2, the relay according to the present invention includes an electromagnetic device 5 in which a current can flow in forward and reverse directions in a body 4, and each contact is operated by the action of this electromagnetic device 5. A main contact mechanism 6 for opening/closing the load circuit, an auxiliary contact mechanism 7 for switching the current direction of the electromagnet device 5, and each contact 5a, 6 of these contact mechanisms 6, 7.
Terminal boards 8, 9, 10, and 11 are connected to terminals b, 7a, and 7b to connect wiring (not shown) from outside the body 4. As shown in FIG. 2, the main contact mechanism 6 and the auxiliary contact mechanism 7 face a movable body 22 that operates them. The main contact mechanism 6 has a movable main contact 6b near one end.
One terminal plate 9 contacts the movable main contact 6b to connect a load circuit, and the other terminal plate 8 includes a fixed main contact 6a.

The movable contact 23 is adapted to be pushed out by the movable body 22, and the movable body 22 has one end 2 of the plunger 20 at its lower end.
0a is installed. As seen in FIG. 1, a projecting piece 2 is provided above the plunger end 20a of the electromagnet device 5.
4.24 is provided to support the movable body 22. The movable body 22 is configured to rotate in forward and reverse directions around this holding point 22a, and the forward and reverse rotation is controlled by the plunger 2.
It is operated by moving forward and backward.

The movable body 22 has a protrusion 22b on the front side in the direction in which the plunger one end 20a protrudes.
3a (shown in Figure 1). The movable contactor 23 has its other end (upper end) 23b, which does not have the main contact 6b, connected to the other terminal plate 8, which is connected to the load, via a copper wire 25. Further, the upper half of the flap is surrounded by a first arm 26 extending from the movable body 22, and is biased in the direction toward the electromagnet device 5 by a contact pressure spring 27 fixed to the inner surface of the first arm 26. . When the plunger one end 20a protrudes and rotates the movable body 22 in the positive direction (arrow direction), the contact pressure spring 27 rotates the movable contact 23 in the positive direction (arrow direction).
The movable body 220 rotates in the rotating direction) and the movable main contact 6b at the lower end contacts the fixed main contact 6a at the tip of the fixed contact plate 9b extending from one terminal plate 9 to be connected to the load. do. As shown in FIG. 3, when one end 20a of the plunger retracts and rotates the movable body 22 in the opposite direction, a part of the side surface of the movable body 22 and the upper end 23b of the movable contact 23 come into contact with each other. After the forward rotation of the child 23 is stopped, the movable contact 23 is rotated in the opposite direction (rotation direction of the movable body 22), and the movable main contact 6b at the lower end is connected to the fixed main contact 6a. It works to separate it from the Furthermore, the relay according to this embodiment has a fourth
As shown in FIG. 5 and FIG. body 2
2 is the latter movable body 22' and its rotation center point (carrying point) 2
2a are the same and are connected by a single connecting rod 55. Therefore, 1 (II electromagnetic device 5 (
The two movable bodies 22 and 22' are moved by the movement of the
Since they operate at exactly the same time, there is no possibility that the contact closing time will vary or that there will be a time difference. Furthermore, since only one electromagnetic device is required, the number of parts can be reduced. The latter movable body and main contact mechanism have the same shapes and the same functions as the former movable body and main contact mechanism, so the same numbers are given to each component in the drawings. The explanation here will be omitted.

In FIG. 4, reference numeral 4' designates an inner body that accommodates the latter movable body 22' and the main contact mechanism 6' and provides insulation between the former movable body 22 and the main contact mechanism 6. The latter movable body 22' and the main contact mechanism 6' are attached to this middle body 4'.
The relay is shown in Fig. 5 (al to (d)).As shown in Fig. 5 (al, fb), there are four terminal plates 8° on the load circuit side. 8.9.9. As shown in FIG. The coil frame 16, magnetic pieces 17, 17 and permanent magnets 18 and 18 are respectively provided in order from the inside of the yoke 1.
It is surrounded by 9. A coil 20 is inserted into a hole along the axial direction of the coil frame 16, and is adapted to go in and out through holes 19a provided in the yoke 19. 20 includes armatures 213.21b extending in two directions on both outer sides of the coil frame 16. 20, each armature 21a,
Due to the change in excitation polarity occurring in the coil frame 16
It is designed to move forward and backward along the axial direction. For example, when the parts of the yoke 19 facing the poles 21a and 21b on both sides are always magnetized to the south pole, a current in a certain direction is passed through the coil 15, and the armatures 21a and 21b are turned to the north and south poles, respectively. When excited, the magnetic flux increases in the gap formed between the armature 21b and the magnetic piece 17.17 and the gap formed between the armature 21a and the yoke 19.
moves in the direction of the arrow. As shown in Figure 7, coil 1
5 in the opposite direction to the above, each armature 2121b
When the armature 21 is excited to the S pole and the N pole, respectively, the armature 21
a and the magnetic piece 17. The gap created by 17 and the above 2
Since the magnetic flux increases in the gap formed between 1b and yoke 19, plunger 20 moves in the direction of the arrow, which is the opposite direction to that described above.

As seen again in FIG. 2, above the electromagnetic device 5 in the body 4, there is an auxiliary contact plate 28 that constitutes the auxiliary contact mechanism 7.
29, contact spring portion 30, and terminal plate 11. A support part 31 for fixing the auxiliary contact mechanism 7 and the terminal board 11, and a printed board 32 placed on the support part 31 to connect the terminal board 11 and the auxiliary contact boards 28 and 29 are provided. The auxiliary contact plates 28 and 29 are connected to the printed board 32 on the other side by penetrating the partition wall 31a from one side of the partition wall 31a constituting the support portion 31 so as to provide a space between them, and are connected to the printed board 32 on the other side. Contact springs 30a on both sides constituting the contact spring portion 30 fixed to the partition wall 31a
, 30a are located. Each contact spring 30a, 30b
have contacts 33, 34, respectively, which contact the respective contacts 7a, 7b of the auxiliary contact plates 28, 29. Auxiliary contact mechanism 7
The contacts that come into contact are switched by the movement of an actuator portion 35a at the tip of the second arm 35 extending from the movable body 22 to between the contact springs 30a and 30b. That is, the second arm 35 changes its position as the movable body 22 rotates in the forward and reverse directions as the plunger end 20a moves in the forward and reverse directions.
0b is pressed away from either one of the auxiliary contact plates 28, 29. Accordingly, only one of the two contacts formed by the contact springs 30a, 30b and the auxiliary contact plates 28, 29 is brought into contact. For example, as shown in FIG. 2, when the movable body 22 rotates in the forward direction, the actuator section 35a releases the pressure on the upper contact spring 30a and connects the contact 33 of the contact spring 30a to the auxiliary contact plate. 28 contact 7a, and instead, the lower contact spring 30b
is pressed to separate the contact 34 of the contact spring 30b and the contact 7b of the auxiliary contact plate 29 so as to release the contact between them. On the other hand, as shown in FIG. 3, when the movable body 22 rotates in the opposite direction, the actuator portion 35a has a completely opposite effect. The contact spring portion 30 is connected to one lead wire 15a (shown in FIG. 1) of the coil 15 of the electromagnet device 5, as shown in the circuit diagram of FIG. The auxiliary contact plates 28 and 29 are electrically connected to one terminal plate 11 on the operating circuit side through the printed board 32. The other lead wire 15b (shown in FIG. 1) of the coil 15 is directly connected to the other terminal plate 10 on the operating circuit side. Also,
As shown in FIG. 1, the auxiliary contact plates 28 and 29 are respectively connected to diodes 36 and 37 arranged in opposite directions on the printed circuit board 32, so that only one direction of current flows. It has become. Both auxiliary contact plates 2
8.29 are connected to each other via a capacitor 38 and a resistor 39, and another resistor 40 is connected in parallel to the capacitor 38. The circuit formed by the capacitor 38 and the two resistors 39 and 40 is a protection circuit for preventing the contacts in the auxiliary mechanism from burning or flapping together.

As shown in FIGS. 8 and 3, when an ON current (signal) in the direction of arrow A that moves the plunger 20 is applied to the relay circuit 41, the current flows through the diode 36, the auxiliary contact plate 29.
Contact spring part 30. It flows through the coil 15 and the terminal plate 10. As a result, as shown in FIG. 2, the coil frame 16
One end 20a of the plunger protrudes from the main contacts 5a, 5b.
and the load circuit 42 is closed. Further, the movable contacts 23.23 interlocked by the action of the movable body 22 are the main contacts 6a,
The main contacts 5a and 5b, which are different from the main contacts 6b, are also closed. At the same time, the contacts that are in contact with each other are switched so that the auxiliary contact plate 28 and the contact spring 30a are connected, and it is no longer possible to
N current stops flowing. Therefore, waste of current can be avoided.

Next, as shown in FIG. 9, when an OFF current (signal) in the direction of arrow B that moves the plunger 20 is applied to the relay circuit 41, the current flows to the coil 15. Contact spring part 30. Auxiliary contact plate 28. It flows through the diode 37 and the terminal board 11. In this way, when a current flows in the opposite direction to the above, the third
As shown in the figure, one end 20a of the plunger is connected to the coil frame 1.
6 (in the direction of the arrow), the main contacts 5a and 5b are opened, and the load circuit 42 is opened. Further, based on the same principle as above, main contacts 5a and 5b different from the main contacts 6a and 6b are connected.
Also opens. At the same time, the contacts that are in contact with each other are switched so that the auxiliary contact plate 29 and the contact spring 30b are connected, and the OFF current no longer flows. Therefore, as above, there is no waste of current. Note that the current flowing from the operating circuit to the relay circuit is a current whose voltage has been lowered by the action of the transformer.

Next, regarding other parts constituting the above embodiment,
This will be briefly explained based on FIG. In the figure, 43 is a cover that covers the built-in parts in the body 4, and 44 is each terminal board 8, 9.
, 10. Clamping screw block for connecting wires to 11, 4
5 is a partition wall provided between the load circuit side terminal plates 8 and 9; 46;
．． 47 are the fixed contact plate 9b and the movable contact 23, respectively.
The electromagnetic iron pieces 48 are provided at the lower ends of each side and attract each other, and 48 is a manual lever (48) provided at the head of the movable body 22 for forcibly rotating the movable body 22 while exposed outside the body 4.
(Also shown in FIG. 3), 49 is a pin serving as a rotation axis of the plunger end 20a and the protruding piece 24 of the electromagnet device 5, 50 is a caulking pin used when attaching the cover 43 to the body 4, 51 is a blind plate that covers the opening of the spare parts storage chamber 52 provided in the body 4, and 53 is a blind plate that is sandwiched between the cover 43 and the coil frame 16 to press the coil frame 16 against the body 4 and prevent it from wobbling. In the relay according to the present invention, in which the buffer spring 54 is a residual plate, there is no particular restriction on the number of movable bodies and main contact mechanisms arranged in parallel. consists of an electromagnet device that can flow current in the forward and reverse directions, a main contact mechanism for opening and closing the load circuit whose respective contacts are operated by the action of this electromagnet device, and an auxiliary device for switching the current direction of the electromagnet device. The main contact mechanism and the auxiliary contact mechanism face a movable body whose tip is pivoted to a plunger that moves forward and backward in accordance with the forward and reverse current flowing through the electromagnetic device. A movable contact whose contact mechanism has a movable main contact near one end and moves forward and backward as the movable body rotates in the forward and reverse directions, and one terminal plate that connects the movable main contact and connects a load circuit. , and the other terminal board with a fixed side main contact, and as the plunger moves forward and backward, the movable body rotates forward and backward, thereby opening and closing the load circuit and changing the current direction of the electromagnet device. The relay is configured to switch, and a separate movable body and main contact mechanism are provided on the sides of the movable body and main contact mechanism, and the former movable body is switched over by the latter. It is characterized by having the same center of rotation as the movable body and being connected by a single connecting rod, so there is no possibility that the contact closing time will vary or there will be no time difference. In addition, since only one electromagnetic device is required, compared to conventional multi-pole relays,
This also has the effect of reducing the number of parts.

[Brief explanation of drawings]

1 and 2 are partially exploded enlarged perspective views showing one embodiment of the relay according to the present invention, and an enlarged plan view with the terminal cover and inner body removed, and FIG. 3 is the same as that shown in FIG. 2. Fig. 4 is a partially exploded perspective view showing the relay shown in Fig. 2, and Fig. 5 (al to (d) shows the relay shown in Fig. 2). 6 and 7 are sectional views showing the action of the electromagnetic device constituting the relay in Fig. 2, and Figs. 8 and 9 are It is a circuit diagram of the relay of Figure 2. 4... Body 4a, 4b... Body opening 5...
・Electromagnetic device 6, 6'... Main contact mechanism 6a, 6b
...The contact point 7...Auxiliary contact mechanism? a, 7b・
...Contact points 8,9,10.11...Terminal board 20
...Plunger 20a...One end of it 22.22
'... Movable body 23... Movable contact 42... Load circuit agent Patent attorney Takehiko Matsumoto No. 3 Figure 4 Section 6 Figure 7 Figure 8 ・ (jd + Procedural amendment ( [Spontaneous], Indication of the case t+@os 9w Permit IIJN275932 No. 2, Name of the invention Relay 3, Person making the amendment Relationship with the case Patent applicant Address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (583) Matsushita Electric Works Co., Ltd. Company Representative: Representative Director Sada Fujii
Husband 4, No agent 7″-2 ＼ 6. Specification subject to amendment and drawings 7, Contents of amendment (11. Replaced “9” on page 5, line 14 of the specification with “8”)
I am corrected. (2) "8" on page 5, line 15 of the specification is replaced with "9"
I am corrected. (3) On page 5, line 18 of the specification, the word "installation" is corrected to "articulated". (4) "9" on page 6, line 20 of the specification is replaced with "8"
I am corrected. (5) "20" on page 9, line 3 of the specification is replaced with "
Plunger 20” is corrected. (6) "20" on page 9, line 5 of the specification is corrected to read "plunger 20J." (7) "20" on page 9, line 7 of the specification is corrected to "plunger 20." (8) "20" on page 9, line 1'7 of the specification is corrected to "plunger 20." (9) On page 9, line 20 of the specification, "a." is corrected to "a, J." 00) On page 10, line 3 of the specification, "21b" is replaced with "a. Pole 21b” is corrected. (11) r30 a, 3 on page 10, line 19 of the specification
0aJ should be corrected to r30a, 30bJ. (12) In the first line of page 13 of the specification, the phrase "auxiliary mechanism" is corrected to "auxiliary contact mechanism." (13) Replace “4” on page 14, line 16 of the specification with “
1”, corrected. (14) Akira, Book 11I, page 17, lines 9 and 10, "Enlarged plan view with terminal cover and inner body removed"
The text has been corrected to read "enlarged cross-sectional view." (15) Delete the phrase "with the terminal cover removed" on page 17, line 11 of the specification. (16) On page 17, line 14 of the specification, the phrase "cross-sectional view" is corrected to "partially cutaway side view." (17) In the attached drawings, Figures 2 and 3 are corrected as shown in the attached sheet.

Claims (1)

[Claims] (1) Inside the body, there is an electromagnet device that can flow current in the forward and reverse directions, a main contact mechanism for opening and closing the load circuit, and the electromagnet device, whose respective contacts are operated by the action of this electromagnet device. It is equipped with an auxiliary contact mechanism for switching the current direction, and the main contact mechanism and the auxiliary contact mechanism are movable, with the tip of the plunger pivoted to move forward and backward in accordance with the forward and reverse current flowing through the electromagnet device. The main contact mechanism has a movable main contact near one end and connects a movable contact that moves forward and backward as the movable body rotates forward and backward, and the load circuit is connected to the movable main contact. It consists of one terminal plate that has a main contact on the fixed side, and the other terminal plate that has a fixed side main contact, and the load circuit is opened and closed by the forward and reverse rotation of the movable body as the plunger moves forward and backward. The relay is configured to switch the current direction of an electromagnetic device, and a separate movable body and main contact mechanism are provided on the side of the movable body and main contact mechanism, and the former A relay characterized in that a movable body has the same rotation center as the latter movable body and is connected by a single connecting rod.