JPS61151943A - 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. By using such a relay, multiple remote control switches can be
By connecting to the III relay, you can open and close the load power supply circuit at multiple locations, or connect each load relay to a 1m
It is very convenient because it can be built at a location and centrally monitor the load. In addition, since the remote control switch is insulated from the load power supply circuit, accidents such as electric shock are eliminated.
It has been a challenge to provide a relay with a slave contact mechanism that is highly reliable in operation, separate from the main contact mechanism and the auxiliary contact mechanism.

C. Object of the Invention] Therefore, an object of the present invention is to provide a relay including a subordinate contact mechanism with high operational reliability.

[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 an auxiliary contact mechanism for switching the current direction, and a terminal that connects each contact of these contact mechanisms to connect wiring from outside the body. A plunger that moves forward and backward in response to a current in the opposite direction faces a movable body to which its tip is pivoted, and the main contact mechanism has a movable side main contact near one end and moves forward and backward as the movable body rotates in the forward and reverse directions. It is composed of a movable contact that moves in reverse, one terminal plate that connects to the movable side main contact and connects a load circuit, and the other terminal plate that has a fixed side main contact, and the plunger moves forward and backward. The relay is configured to open and close the load circuit and switch the current direction of the electromagnetic device by rotating the movable body forward and backward in accordance with the forward and reverse rotations of the movable body. The two terminals of this microswitch are directly attached to the terminal boards of the two slave terminals provided to connect the wiring from outside the body, and the positive terminal of the other end of the plunger is The gist of the relay is that the lever of the microswitch is directly actuated by movement in either direction. Hereinafter, an embodiment thereof will be described in detail based on the accompanying drawings.

The relay according to the present invention is shown in FIGS. 1 and 2 +al
(As shown in dl, there is an electromagnetic device 5 in the body 4 that allows current to flow in the forward and reverse directions, and a load circuit opening/closing device whose respective contacts are operated by the action of the electromagnetic device 5. The main contact mechanism 6 and the auxiliary contact mechanism 7 for switching the current direction of the electromagnet device 5, and the wiring (not shown) connected to the contacts 6a, 6b, 7a, and 7b of these contact mechanisms 6 and 7 on the outside of the body 4 terminal boards 8, 9, 10,
It is equipped with 11. The main contact mechanism 6 and the auxiliary contact mechanism 7 face a movable body 22 that operates them, as shown in FIG. 2 (C1).The main contact mechanism 6 includes a movable main contact 6b near one end. A movable contactor 23, one terminal plate 9 that contacts the movable main contact 6b and connects the load circuit, and the other terminal plate 8 that includes the fixed main contact 6a.
It is composed of. The movable contact 23 is adapted to be pushed out by the movable body 22, and the movable body 22 has one end 20a of the plunger 20 attached to its lower end. As seen in FIG. 1, the plunger end 2 of the electromagnet device 5
Projecting pieces 24, 24 are provided above Oa and support the movable body 22. The movable body 22
It rotates forward and backward about 2a, and the forward and reverse rotation is operated by forward and reverse movement of the plunger 20. The movable body 22 has one end 20 of the plunger.
A has a protrusion 22b on the front side in the protruding direction, and the receptacle is inserted into the hole 23a (shown in FIG. 1) of the movable contact 23 so that the protrusion 22b becomes the center of rotation of the movable contact 23. ing. 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 9, which is connected to the load, via a copper wire 25. Further, the upper half of the flap is wrapped in a first arm 26 extending from the movable body 22, and a contact pressure spring 27 is fixed to the inner surface of the first arm 26.
is biased in the direction toward the electromagnet device 5.

As shown in FIG. 2 (C1), the contact pressure spring 27 has one end 20a of the plunger protruding and moving the movable body 22 in the forward direction (direction of the arrow).
When rotating the movable contact 23 in the positive direction (rotation direction of the movable body 22), the movable main contact 6b at the lower end extends from one terminal plate 9 to be connected to the load. It serves to contact the fixed side main contact 6a at the tip of the fixed contact plate 9b. As shown in FIG. 3 (bl), when the plunger one end 20a retracts and rotates the movable body 22 in the opposite direction, a part of the side surface of the movable body 22 and the movable contact 23
After the forward rotation of the movable contact 23 is stopped by contact with the upper end 23b, the movable contact 23 is rotated in the opposite direction (rotation direction of the movable body 22), and the lower end It serves to separate the movable main contact 6b from the fixed main contact 6a.

As shown in FIGS. 1 and 2(C), above the electromagnet device 5 in the body 4, there are auxiliary contact plates 28, 29, contact spring portions 30, and terminal plate 11 that constitute the auxiliary contact mechanism 7.
．． 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 connect to the partition wall 31a that constitutes the support portion 31, with a space provided between them.
It penetrates the partition wall 31a from one side and is connected to the printed board 32 on the other side.
Contact springs 30a and 30b on both sides constituting the contact spring section 30 fixed to a are positioned. Each contact spring a
oa, 30b are each contact 7a of the auxiliary contact plate 28.29,
They each have contacts 33, 34 in contact with 7b.

The auxiliary contact mechanism 7 connects the movable body 22 to the contact spring 30a.
, 30b, the actuator portion 35a at the tip of the second arm 35 is moved to switch the contacts that come into contact with each other. 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, but at this time it assists one of the contact springs 30a and 3'Ob. Press one of the contact plates 2B and 29 to separate them. Accordingly, only one of the two contacts formed by the contact springs 30a, 30b and the auxiliary contact plate 28, 29 is brought into contact with each other.
As shown in FIG. 2(C), when the movable body 22 rotates in the forward direction, the actuator section 35a releases the pressure on the upper nine-contact spring 30a, and connects the contact 33 of the contact spring 30a and the auxiliary contact. The contact 7a of the plate 28 is brought into contact, and the lower contact spring 30b is pressed instead 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, Fig. 3 (bl
As shown in FIG. 2, when the movable body 22 rotates in the opposite direction, the actuator portion 35a has a completely opposite effect to that described above. As shown in the circuit diagram of FIG.
(shown in Figure 1). Auxiliary contact plate 28.
29 is electrically connected to one terminal board 11 on the operating circuit side through a 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. In addition, the auxiliary contact plate 2
8°29 are diodes 36 arranged in opposite directions on the printed board 32, as shown in FIG.
．． The two auxiliary contact plates 28 and 29 are connected to the terminals 37 and 28 and 29, respectively, so that only one direction of current flows.
They are connected to each other via a capacitor 38 and a resistor 39, and the capacitor 38 has another capacitor connected in parallel with it.
resistors 40 are connected. These capacitors 38
The circuit formed by the two resistors 39 and 40 is a protection circuit for preventing the contacts in the auxiliary mechanism from burning or flapping together.

The most important features of the relay according to the above embodiment are as follows. That is, FIGS. 2(a) to (dl
As seen in the figure, the lever 56 of the microswitch 55 faces the other end 20b of the plunger 20, and each of the two terminals 57 (only one is visible in the figure) of this microswitch 55 is connected to the outside of the body 4. Terminal board 5 with two slave terminals 58 and 58 provided to connect the wiring from
9.59 Each is directly attached by soldering. Thereby, the two slave terminals 58, 58 and the microswitch 55 form one coherent block, so that a slave contact mechanism with a simple configuration can be obtained. Also,
Another feature is that the lever 56 of the microswitch 55 is directly actuated by moving the other end 20b of the plunger in either the forward or reverse direction. Therefore, the operation of the microswitch 55 can be highly reliable. FIG. 4 is an exploded perspective view of the subordinate contact mechanism plus an installation member for installing it inside the body. In the figure, 55 is a microswitch, 56 is a lever thereof, 59 is a terminal plate of a secondary terminal, 60 is a slit into which each terminal of the microswitch is received, and 61 is an installation member.

As shown in FIG. 6, the electromagnet device 5 constituting the above embodiment has a magnetic piece 17 and a permanent magnet 18 placed at corresponding corner positions across a coil frame 16 around which a coil 15 is wound, in order from the inside. It is equipped with And the above coil frame 1
6. The magnetic pieces 17.degree. 17 and the permanent magnets 18.18 are all wrapped in a yoke 19. A plunger 20 is inserted into a hole along the axial direction of the coil frame 16, and enters and exits through holes 19a, 19a provided in the yoke 19. The plunger 20 is connected to the coil frame 1
6 Armature 213.21b extending to two sides on both sides
It is equipped with The plunger 20 is configured to move forward and backward along the axial direction of the coil frame 16 due to the change in excitation polarity generated in each armature 21a, 21b in accordance with the forward and reverse current flowing through the coil 15. For example, indirect pole 21
When the parts of the yoke 19 facing the a and 21b are always magnetized to the south pole, when a current is passed in a certain direction through the coil 15 and the armatures 21a and 21b are excited to the north and south poles, respectively, The magnetic flux increases in the gap formed by the armature 21b and the magnetic pieces 17.17 and the gap formed between the armature 21a and the yoke 19, so that the plunger 20 moves in the direction of the arrow. As shown in Figure 7, coil 15
A current is applied in the opposite direction to the above, and each armature 21a, 21
When b is excited to S pole and N pole, respectively, armature 21a
and the magnetic piece 17.17 and the gap made by the armature 2
Since the magnetic flux increases in the gap created by 1b and yoke 19, plunger 20 moves in the direction of the arrow, which is the opposite direction to the above.

As shown in FIG. 8 and FIG. 3(b), the relay circuit 4
When an ON current (signal) in the direction of arrow A is applied to move the plunger 20 through the diode 36, the auxiliary contact plate 29. Contact spring part 30. It flows through the coil 15 and the terminal @10. As a result, as shown in Figure 2 (C1),
One end 20a of the plunger protrudes from the coil frame 16 to close the main contacts 5a and 6b, thereby closing the load circuit 42. 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, wasteful current can be eliminated. Next, as shown in FIG.
When the FF current (signal) is applied, the current flows through the coil 15. Contact spring part 30. Auxiliary contact plate 28. Diode 37. Terminal board 1
flows through 1. In this way, when a current flows in the opposite direction to that described above, as shown in FIG. , the load circuit 42 opens, and at the same time, the contacting contacts 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, the current The current flowing from the operation circuit to the relay circuit is a current whose voltage has been lowered by the action of the transformer.In addition, in Figures 8 and 9, the circuit of the slave contact mechanism is Display omitted.

The circuit of the slave contact mechanism is, for example, as shown in FIG.
When the load circuit 42 is closed (O
Indicator lamp 62 and AC power supply 6 to display (N operation)
It is connected to a circuit 64 having 3. in this case,
As shown in FIG. 2 1cI, the microswitch 55 is
The circuit closes when the other end 20b of the plunger leaves the lever 56, and conversely opens the circuit when the other end 20b of the plunger pushes the lever 56, as shown in FIG. The open/close state of the load circuit may be reversed to display when the load circuit is open (OFF operation).

Next, regarding other parts constituting the above embodiment,
0, which will be briefly explained based on FIG.
．． a clamping 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(a)), 49 is the plunger one end 20a
and pins serving as rotating wheels of the protruding pieces 24 and 24 of the electromagnet device 5, 50 a caulking bin used when attaching the cover 43 to the body 4, and 51 a spare parts storage chamber 52 provided in the body 4. blind plate covering the opening of, 53
is sandwiched between the cover 43 and the coil frame 16, and the coil frame 1
A buffer spring 54 is used to press the body 4 against the body 4 and prevent wobbling, and a residual plate 54 is used.

There are no particular limitations on the internal structure of the main contact mechanism, auxiliary contact mechanism, etc. that constitute the relay according to the present invention.

〔Effect of the invention〕

In the relay according to the present invention, the lever of the microswitch faces the other end of the plunger, and each of the two terminals of the microswitch has two slave terminals provided to connect wiring from outside the body. Since the two slave terminals and the microswitch are directly attached to each of the terminal plates, the two slave terminals and the microswitch collectively form one block, resulting in the effect that a slave contact mechanism with a simple configuration can be obtained. Also, whether the other end of the plunger is forward or reverse
Since the lever of the microswitch is actuated directly by the movement of the microswitch, the operation of the microswitch can be highly reliable.

[Brief explanation of drawings]

Figures 1 and 2 (a), (b), ((ri, (
d) is a partially exploded perspective view, an enlarged plan view, an enlarged left side view, an enlarged sectional view and an enlarged right side view with the terminal cover removed, showing an embodiment of the relay according to the present invention;
Figures (al, (bl) are a plan view and a sectional view with the terminal cover removed that shows the action of the relay in Figure 2, and Figure 4.
Figures (al, (bl) are enlarged perspective views of parts around the subordinate contact mechanism of the relay in Figure 2, Figure 5 is a circuit diagram of the relay in Figure 2, and Figures 6 and 7 are the diagrams in Figure 2. 8 and 9 are circuit diagrams of the relay shown in Fig. 2. 4...Body 4a, 4b...Body opening 5...
・Electromagnetic device 6... Main contact mechanism 6a, 6b...
The contact point 7... Auxiliary contact mechanism? a, 7b...Contact points 8.9.10.11...Terminal plate 20...Plunger 20a...One end thereof 20b...Other end
22... Movable body 23... Movable contact 42...
Load circuit 55... Micro switch 56... Its lever 57... Its terminal 58... Slave terminal 5
9...Representative for the terminal board Patent attorney Takehiko Matsumoto @4 Figure 7 Figure 8 Tena Rokuki Ichisho 1 (Yamahata) 1. Indication of the case Patent Application No. 275933, filed in 1982. 2. Invention title relay 3, relationship with the amended person case Patent applicant Address 1048 Oaza Kadoma, Kadoma City, Osaka Name (583) Matsushita Electric Works Co., Ltd. Representative (tJ & Hl position Sadao Fujii 4, no agent) 6. Specification subject to amendment and drawings 7, Contents of amendment +11 "Terminal board 9" in line 20 of page 5 of the specification is corrected to "terminal board 8". (2) Page 6 of the specification In the first line, replace "terminal board 8" with "
Terminal board 9" is corrected. (3) In the fourth line of page 6 of the specification, the word "installation" is corrected to "articulated". (4) "Terminal board 9" on page 6, line 17 of the specification is replaced by 1. Correct it to "terminal board 8." (5) On page 10, line 11 of the specification, the phrase "auxiliary mechanism" is corrected to "auxiliary contact mechanism." (6) Delete the words "with the terminal cover removed" from page 17, line 8 to page 17, line 9 of the specification. (7) Delete the phrase "with the terminal cover removed" in line 11 of page 17 of the specification. (g) r(al, (b) on page 17, line 12 of the specification
Delete lJ. (9) 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 a terminal that connects each contact of these contact mechanisms to connect wiring from outside the body. A plunger that moves forward and backward in response to a current in the opposite direction faces a movable body to which its tip is pivoted, and the main contact mechanism has a movable side main contact near one end and moves forward and backward as the movable body rotates in the forward and reverse directions. It is composed of a movable contact that moves in reverse, one terminal plate that connects to the movable side main contact and connects a load circuit, and the other terminal plate that has a fixed side main contact, and the plunger moves forward and backward. The relay is designed to open and close the load circuit and switch the current direction of the electromagnetic device by rotating the movable body in the forward and reverse directions as the movable body rotates in the forward and reverse directions. The two terminals of this microswitch are directly attached to the terminal boards of the two slave terminals provided to connect the wiring from outside the body, and the positive terminal of the other end of the plunger is A relay characterized in that the lever of the microswitch is directly actuated by movement in either direction.