JPS61225722A - Push button switch for solenoid switch - 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] [Industrial Application Field] This invention is a push button switch for an electromagnetic switch that is assembled integrally with a Fi electromagnetic switch, especially a push button switch that is assembled into an electromagnetic switch in order to make the contacts of the electromagnetic switch self-retentive. This invention relates to a push button switch for an electromagnetic switch.

[Prior art] Figure 5 shows a conventional single-magnetic switch using a push button switch.
FIG. 3 is a contact self-holding circuit diagram of an m-magnetic switch. In the figure,
X is a conventional push button switch for an electromagnetic switch, and has a pair of on push buttons m1 (1) and off push buttons &LI (2J).
3) is a fixed contact for on, (4) is a movable contact for on, and (5) is a movable contact for on.
) is a fixed contact for OFF, and (6) is a town @ contact for OFF.

By suppressing the OFF push button (1), the open movable ON contact (4) comes into contact with the fixed ON contact (3).

Further, due to the suppression operation of the OFF push a (2), the closed movable OFF contact (6) separates from the OFF fixed contact (5J) and becomes non-contact.

A fixed OFF contact (5) of the pushbutton switch X is connected to the operating power supply V via a lead A. Movable contact for off (
6) and the ON movable contact (4) are connected by lead wire B, and the ON movable contact (6) is further connected to the fixed contact part (7d) of the extra switch W of the electromagnetic switch by lead wire C. has been done. The movable contact part (8d) of the open/close switch W is connected to the fixed ON contact (3) of the ON rhyme (1) with a lead wire, and is further operated with the lead wire E.
It is connected to the operating coil (9) of the connected electromagnetic switch main body.

Electromagnetic switching δ using conventional electromagnetic switch body switch;
$5i is applied to the contact self-holding circuit as described above, and for example, when the ON press m1 (1) is suppressed, the ON movable contact (4) comes into contact with the ON fixed contact (3), and the ON rhyme is activated. Movable contact (6) I for turning off during non-pressing operation of (2)
The operating coil (9) forms a closed circuit with the operating power supply ■ because it is in contact with the operating coil (
9) is excited to operate the electromagnetic switch 'a ball, and the four-pole movable contact portions (8a) to (8d) of the electromagnetic switch main body come into contact with the fixed contact portions (7a) to (7d). Movable contact part (8d
) comes into contact with the fixed contact part (7d), the on rhyme (1
) even if the pressing operation is released, the operating coil (9) remains energized because it forms a complete closed circuit with the operating power supply V, and the movable contacts (8a) to (8d) It is kept in contact with the fixed contact parts (7a) to (7d), and the movable contact part (8d) and the fixed contact part (7d) function as self-holding contacts.

Therefore, in order to release the self-holding, it is sufficient to fully press the OFF push button (2). That is, when the OFF push i[(2) ft is pressed, the OFF movable contact (6) separates from the OFF fixed contact (5), and the operating coil (9) moves 1!1! Since it will form an open circuit with the source V, the operating coil (9
) C is no longer excited. Therefore, the movable contact portion (8a) ~
(8d) is in the original state at seat a and the fixed contact tfls (7a
) to (7d), the self-protection] temple is released. This self-holding circuit is used to start and stop a load such as a motor.

[Problem that the invention seeks to solve]

Since the conventional rhyming switch for iaC magnetic opening switch as mentioned above does not have a contact switch t' for self-holding,
Even if it is attached to a core & i switch and used for a contact self-holding circuit of an electromagnetic switch, only a single magnetic switch with a four-pole switch can be used, and the wiring of the slanted wire that makes up the self-holding circuit is The problem was that it became more complicated as it became longer.

This invention was devised to solve these problems, and can be used in contact self-holding circuits, as well as electromagnetic switches equipped with three-pole open/close switches, and can also be used in contact self-holding circuits with lead wires. To provide a push button switch for an electromagnetic switch which requires less and shorter wiring.

[Means for solving problems]

The push button switch for an electromagnetic switch according to the present invention has an on fixed contact and an off fixed contact provided in a push button case attached to an electromagnetic switch main body, and a push button cover that closes an opening of the push button case. A pair of on push buttons and off push buttons that are attached to the switch and are always biased toward the outside, and a movable off contact that is always in contact with the off fixed contact but is not in contact when the off push button is pressed. , a movable ON contact that is not in contact with the ON fixed contact at all times but makes contact when the ON push button is pressed, a self-holding fixed contact provided on the push button case, and a crossbar on the electromagnetic switch body. The electromagnetic switch is configured to have a movable self-holding contact that is brought into pressure contact with the self-holding fixed contact and is not in contact with the self-holding fixed contact at all times, but is in contact when the electromagnetic switch main body is turned on.

[Effect]

In this invention, a self-holding movable contact and a self-holding fixed contact are provided inside a rhyming case attached to the electric switch main body, and the self-holding movable contact operates to open and close the electromagnetic switch main body. Since the self-holding fixed contact is brought into contact with and separated from the self-holding fixed contact in conjunction with the movement of the crossbar, it can be used as a self-holding switch in a contact self-holding circuit of an electromagnetic switch.

[Example 1] Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is an explanatory diagram showing the relationship between the fixed contact and the 5rvJ contact of the rhyming switch, and Fig. 6 shows the external appearance of the rhyming switch. It is a front view.

In the figure, CLη is the electromagnetic switch main body, (11m) is the electromagnetic switch main body (lid 111), (2) is the electromagnetic switch main body α
The small loss bar (to) is a push button case attached to the main body of the electromagnetic switch, and has a hole r13a) through which the head of the cross bar (2) faces. α fathom is a push button case (to)
The OFF fixed contact provided on one end side, the ON fixed contact provided on the other end of the push button case (to), αG
is a push-button cover that closes the opening of the rhyming case (2), αη is a push-button cover (an off push button that is attached to IQ so that it can be moved freely but cannot be removed), and (to) is a push-button cover that is movable and cannot be removed from push-button cover αQ. The off push button is fixed and installed, and is installed in parallel with the off push button αη. (to) is the off spring receiver, (
1) is the spring holder for ON, (2) is the spring holder for OFF (to)
The coil spring is engaged with the spring receiver (1) to constantly bias the OFF pushbutton outward, and the coil spring is engaged with the ON spring receiver (1) to constantly bias the ON pushbutton outward. It is a coil spring. (To) is a movable OFF contact whose end is fixed at the center of the push button case (To), and the next contact (23&) provided at the tip is constantly pressed against the OFF fixed contact α◆. Therefore, when the OFF push button C17) is pressed, the contact (25a) separates from the OFF fixed contact q4. (to) is a movable contact for ON (to) whose end is fixed at the center of the rhyming case (2), and the contact r24a) provided at the tip gs part is always connected to the fixed contact for ON (2). is far away, and when the ON push button α is suppressed, contact r2
4m) comes into contact with the ON fixed contact (2).

(To) is a self-holding fixed contact provided on the push button case (To). The end of (To) is fixed near the center of the push button case (To), and is parallel to the on movable contact (To). It is a self-holding movable contact. This self-holding movable contact (to) has a bent part (26a) in the center that projects toward the electromagnetic switch main body αη, and a contact point (26b>k in the tip). The part (26m) is brought into pressure contact with the head of the crossbar (2) facing the hole (13a) of the push button case (to).Therefore, the contact (26b) of the self-holding movable contact (c) When the crossbar is off due to the opening/closing operation of the electromagnetic switch main body αη, the bent part (26a) is pushed up by the crossbar (7) and is normally separated from the self-holding fixed contact (c), so that the electromagnetic switch Vessel body (11)
When the crossbar is turned on due to the opening/closing operation of the
) comes out from the hole (13m) of the push button case (2), and the bent part (26m) enters the hole (13m) and comes into contact with the self-holding fixed contact (to).

In this embodiment, as shown in FIG. In addition, the fixed contact for ON (G) and the fixed contact for self-holding □□□ are formed by one common fixed contact (To). (A) is the fixed contact for OFF. The lead wire connected to α4 is directly connected to the operating power supply V, which will be described later. (D) is the lead wire connected to the ON fixed contact (to), which is connected to the operating coil (9), which will be described later. has been done.

FIG. 4 is a contact self-holding circuit diagram of an electromagnetic switch using an electromagnetic switch.

In the figure, X is the rhyming switch for the electromagnetic switch of this embodiment. The OFF fixed contact α4 of the rhyming switch X is connected to the operating power source V via a lead MAt. The OFF movable contact (to), the on movable contact t241, and the self-holding movable contact (to) are one shared movable contact (to).
Therefore, it is difficult to connect them with each other using lead wires.

Moreover, since the ON fixed contact (1) and the self-holding fixed contact (3) are also formed as a single common movable contact, connection between them by lead wires is unstable. This shared fixed contact (to) is connected to the operating coil (9) of the electromagnetic switch main body o1, which is connected to the operating power source V via a lead wire.

In the self-holding circuit of the contact of an electromagnetic switch using the W4 modified rhyming switch for electromagnetic switches as described above, when the on push button (G) is fully pressed, the shared movable contact (to) moves for on. The contactor 12!4 is in contact with the ON rigid fixed contact α fathom of the shared movable contactor 4, and when the OFF push button 4 is not pressed, the OFF movable contactor is in contact with the OFF fixed contact Q4. Therefore, the operating coil (9) forms a closed circuit with the operating power supply V, and the operating coil (9) is excited 4a to operate the electromagnetic switch main body aυ, and the electromagnetic switch main body Contact parts (8a) to (8d) are fixed contact parts (7a)
~ (7d) comes into contact with. At this time, the electromagnetic switch body αη
When the crossbar (6) is turned on, the head of the crossbar (2), which was facing the hole (13a) of the push button case (6), comes out from the hole (13m). Therefore, the self-holding movable contact (to) of the shared movable contact (to) has its bending portion r26
m) enters the hole (13 &) when the cross is on,
It moves toward the push button case (2) and comes into contact with the self-holding fixed contact (c) of the common fixed contact (to). Then,
Even if the pressing operation of the ON push button (to) is released, the operation coil (
9) forms a closed circuit with the operating power source V, the operating coil (9) remains excited, and the movable contact portion (8
m) ~(8d) tl! Fixed contact part (7m) ~ (7
d), and the contact is self-retained.

Therefore, in order to remove the self-holding tS of the contact, press the OFF push button (
) can be suppressed. That is, when the OFF push button (to) is pressed, the OFF aJ movable contact Ω of the shared movable contact (TO) is separated from the OFF fixed contact housing ◆, and the operating coil (9) is activated by the operating power supply v1! : Since an open circuit is formed, the operating coil (9) is no longer energized.

Therefore, the movable contact portions (8a) to (8d) return to their original states and separate from the fixed contact portions (7a) to (7d), respectively. At this time, the crossbar 02 moves off and its head enters the hole (13a) of the push button case (2), and presses the bent part (26a) of the self-holding movable contact (to) to make the self-holding movable contact. The contact @ is moved toward the push button lid αQ side, the self-holding movable contact (c) separates from the self-holding fixed contact (c), and the self-holding of the contact is released.

In this embodiment, the electromagnetic switch push button switch X is equipped with a self-holding movable contact (to) and a self-holding fixed contact (c) that interlock with the crossbar (6). By using (c) and (to) as a self-holding switch in the contact self-holding circuit of an electromagnetic switch, the remaining pole of an electromagnetic switch or a four-pole type can be used for other purposes, and the remaining pole of a three-pole type can be used for other purposes. This means that even a magnetic switch can be used as a magnetic switch equipped with a push button switch for an electromagnetic switch that allows the contacts to self-hold.

In addition, by configuring the contact self-holding circuit of the electromagnetic switch using the push button switch Xt- for the electromagnetic switch of this embodiment, the d-rhyme switch c! 51', conventionally, the on movable contact 34 and the on fixed contact (2)
The +3- wire connected to the movable contact g (8d) and the fixed contact part (7d), which were used for self-holding of the electromagnetic switch main body αη outside the switch, is (C), ω)
It becomes unnecessary and wiring becomes easier. Furthermore, the self-holding movable contact (C), the ON movable contact @, and the OFF movable contact (C) are formed as one shared movable contact (To), and the self-holding fixed contact ( C) and the ON fixed contact (to) are formed as a single common fixed contact (to), eliminating the need for mutual wiring inside the switch and eliminating the need for connection to the outside, which was conventionally used. Some of the lead wires (C and D) are no longer needed, and the parts are integrated, making it cheaper (and the number of parts has been reduced, making assembly easier.

〔Effect of the invention〕

As explained above, this invention includes a self-holding movable contact and a self-holding fixed contact inside the switch, and connects the self-holding movable contact t to the crossbar operation of the electromagnetic switch main body to connect the crossbar. When the self-holding movable contact is off, the self-holding fixed contact is not in contact with the self-holding fixed contact, and when the crossbar is on, the self-holding movable contact is in contact with the self-holding fixed contact, so the electromagnetic switch In the case of a four-pole type, the remaining pole can be used for other purposes, and in the case of a three-pole type, an electromagnetic switch equipped with a push-button switch for electromagnetic switches that maintains the contact self-retention (- has the effect of being usable, and also has the effect of being self-retaining). If the holding movable contact and the fixed contact are used in the contact self-holding circuit of an electromagnetic switch, the town 41tF, which was conventionally used for self-holding of the electromagnetic switch outside the switch, can be used.
There is also the effect that the lead wires connected to the contact portion and the fixed contact portion are no longer necessary, and the wiring of the circuit becomes easier.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing the relationship between a fixed contact and a movable contact of a push-button switch, and FIG. 3 is a front view showing the outside of the push-button switch. Fourth
The cause is a contact self-holding circuit diagram of an electromagnetic switch using a push button switch for an electromagnetic switch. FIG. 5 is a contact self-holding circuit diagram of an electromagnetic switch using a conventional push button switch for an electromagnetic switch. In the figure, a is the electromagnetic switch main body, and o2 is the crossbar.
1 (to) is a push button case, return is a fixed contact for ON, (2
) is a fixed contact for ON, αQ is a push button cover, αη is a push button for OFF, (to) is a push button for ON, @ is a movable contact for OFF, (2
41 is a movable contact for ON, (C) is a fixed contact for self-holding, (261 is a movable contact for self-holding. In each figure, the same reference numerals indicate the same or equivalent parts. Agent Patent Attorney Sanro Kimura Figure 1 Figure 2 4a 29 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A push button case attached to the electromagnetic switch body, a fixed contact for ON and a fixed contact for OFF provided at intervals on the rhyming case, a push button cover that closes the opening of the push button case, and a push button cover for the push button cover. A pair of on rhyme and off push buttons that are movably attached and are always biased toward the outside, and a movable off button that is always in contact with the off fixed contact and is non-contact when the off push button is pressed. The contact, the fixed contact for ON, the movable contact for ON that is always non-contact but makes contact when the ON push button is pressed, the self-holding fixed contact provided on the push button case, and the electromagnetic switch main body. A push button switch for an electromagnetic switch, characterized in that it is brought into pressure contact with a crossbar and is equipped with a self-holding fixed contact and a self-holding movable contact that is normally non-contact but is in contact when the electromagnetic switch main body is turned on. .