JPH0565964B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a changeover switch, and particularly to a switch for stably holding an object to be attracted by an electrostatic holding device, and for easily holding an object to be attracted by an electrostatic holding device. This invention relates to a changeover switch that can be peeled off.

[Prior art] Electrical switches include on/off switches that conduct or cut off power to electrical equipment in order to drive or stop electrical equipment such as motors, and switches that connect electrical equipment in one direction and the other. There are switches and the like that convert the polarity of the power supply to electrical equipment and make it conductive. Further, an electrostatic holding device, which is one of the electrical devices, is capable of attracting and holding an object to be attracted when power is supplied, and detaching the object when power is not supplied, by operating a switch.

[Problems to be Solved by the Invention] By the way, in order to drive an electrical device such as a motor in forward or reverse rotation, it is necessary to separately install both an on/off switch for supplying and disconnecting the power supply and a switch for converting the polarity of the power supply. This is disadvantageous in terms of structure, and the number of switches to be operated increases, resulting in poor operability.

In addition, electrostatic holding devices were activated and stopped by an on/off switch that simply turned on and off the power, so as the number of on/off switches increases, the polarity of the power source becomes the same. There is a drawback that the electrostatic attraction force is weakened, making it unstable to attract and hold the object to be attracted. In order to eliminate this drawback, it is possible to provide the electrostatic holding device with a switch that changes the polarity of the power supply, but as described above, it is necessary to provide both an on/off switch for the power supply and a switch that changes the polarity. Therefore, there were disadvantages in that it was structurally disadvantageous and operability deteriorated.

[Object of the Invention] Therefore, in order to eliminate the above-mentioned inconvenience, the object of the present invention is to enable the electrostatic holding device to turn on and off the power supply and change the polarity of the power supply using one changeover switch, and to It is an object of the present invention to provide a changeover switch which can stably attract and hold an object, easily peel off an object to be adsorbed, is structurally advantageous, and can improve operability.

[Means for solving problems]

In order to achieve this object, the present invention provides an electrostatic holding device that attracts and holds an object to be attracted, and a power supply section that supplies power to the electrostatic holding device, and provides a connection between the electrostatic holding device and the power supply section. is provided with a changeover switch that changes the polarity after going through a non-conductive state and then changes the polarity to a conductive state, and the changeover switch has a cylindrical rotatable switching part and an operation that reciprocates to rotate the switching part by a predetermined amount. a rod, an input side body installed on one end surface of the switching section, an output side body installed on the other end surface of the switching section, and a peripheral edge of the one end surface of the switching section formed at equal intervals in the circumferential direction. first to eighth input marking parts, and first to eighth output marking parts formed at equal intervals in the circumferential direction on the periphery of the other end surface of the switching part, facing the first to eighth input marking parts. a first connecting body that connects the first input stamp section and the first output stamp section; a second connecting body that connects the third input stamp section and the seventh output stamp section; a third connecting body that connects the fifth input stamp section and the fifth output stamp section; a fourth connecting body that connects the seventh input stamp section and the third output stamp section; and a positive electrode of the power supply section. a first input terminal section that is connected and attached to the side surface of the switching section of the input body opposite to the first input stamp section; and a first input terminal section that is connected to the negative electrode of the power supply section and that is attached to the fifth input stamp section. a second input terminal section attached to the side surface of the switching section of the input side body facing the input side body; and a second input terminal section attached to the side surface of the switching section of the input side body; a first output terminal section attached to the side surface of the switching section of the side body; and a first output terminal section attached to the side surface of the switching section of the output side body, which is connected to the other electrode of the electrostatic holding device and facing the fifth output marking section. and a second output terminal section attached to the terminal.

[Function] According to the configuration of the present invention, when the operating rod is pressed in order to supply power to the electrostatic holding device, the switching portion is rotated by a predetermined amount, and the first input terminal portion, the first connecting body, and the first The first output terminal section is connected to the output terminal section and the first output terminal section has a positive polarity, and the second input terminal section, the second connecting body, and the second output terminal section are connected to the second output terminal section. becomes negative polarity, the operating rod returns to its original state, and the selector switch turns on.
An object to be attracted can be held by the electrostatic holding device.

Then, when the operating rod is pressed again, the switching part is rotated by a predetermined amount, and the second input marking part is located at the first input terminal part, but since the connecting body is not connected to this second input marking part, , power is not supplied to the first output terminal part, and the sixth input mark part is located in the second input terminal part, but since the connecting body is not connected to this sixth input mark part, the second output terminal part is not connected to the sixth input mark part. As a result, the electrostatic holding device temporarily becomes non-conductive, the operating rod returns to its original position, and the selector switch turns off, allowing the object to be easily detached from the electrostatic holding device. You can make it happen.

Furthermore, when the operating rod is pressed, the switching part is rotated by a predetermined amount, and the first input terminal part, the second connecting body, and the second
The output terminal section is connected to the second output terminal section, and the second output terminal section has positive polarity, and the second input terminal section and the fourth output terminal section are connected.
The connecting body and the first output terminal section are connected to each other.
The output terminal section becomes negative polarity, thereby converting the polarity of the power supply, returning the operating rod to its original position and turning on the selector switch. In this way, the polarity of the power supply is converted, so in the electrostatic holding device,
Without reducing the electrostatic attraction force of the object to be attracted,
It is possible to stably adsorb and hold an adsorbed object.

[Examples] Examples of the present invention will be described below in detail and specifically based on the drawings.

1 to 8 show embodiments of this invention. In FIG. 1, 2 is a changeover switch. This changeover switch 2 is used in the electrostatic holding device 74 shown in FIG. and the other end surface 4 of this switching section 4
It has an output side body 8 installed at a portion b, and a push-type operating means 10 that rotates the switching unit 4 by a predetermined amount.

In this embodiment, the switching section 4 is formed into a cylindrical shape, and has a first input stamp section 12, a second input stamp section 14,
Third input stamp section 16, fourth input stamp section 18, fifth input stamp section 20, sixth input stamp section 22, seventh input stamp section 2
4. Eighth input marking portions 26 are sequentially formed, and first output marking portions 2 are formed at equal intervals in the circumferential direction on the periphery of the other end surface 4b, facing the first to eighth input marking portions.
8, second output marking section 30, third output marking section 32, fourth
An output stamp section 34, a fifth output stamp section 36, a sixth output stamp section 38, a seventh output stamp section 40, and an eighth output stamp section 42 are formed in this order.

The first input marking section 12 is in communication with the first output marking section 28 via a first connecting body 44 .

The third input marking section 16 communicates with the seventh output marking section 40 via a second connecting body 46 .

The fifth input marking section 20 communicates with the fifth output marking section 36 via a third connecting body 48 .

The seventh input marking section 24 is connected to the third output marking section 32 via a fourth connecting body 50.

On the switching section side surface 6a of the input side body 6, a first input contact 52 and a second input contact 54 are provided opposite to the first input stamp section 12 and the fifth input stamp section 20 on the one end surface 4a of the switching section 4. It is attached. In this embodiment, the first input contact 52 functioning as an input terminal section is connected to the positive pole of a power supply section 84 (see FIG. 5) via a first electric path 56. Further, the second input contact 54 functioning as an input terminal section is connected to the second electric path 58
It is connected to the negative pole of the power supply section 84 through the terminal.

Further, on the switching part side surface 8a of the output side body 8,
The first output mark part 28 on the other end surface 4b of the switching part 4, the fifth
A first output contact 60 and a second output contact 60 face the output marking part 36
An output contact 62 is attached. The first output contact 60 functioning as an output terminal section is connected to the electrostatic holding device 7
A third electrical path 6 connected to one of the pair of electrodes 78 of 4.
Connected to 4. Further, the second output contact 62 functioning as an output terminal section is connected to a fourth electric path 66 that communicates with the other of the pair of electrodes 78 of the electrostatic holding device 74.

The operating means 10 includes an operating rod 70 that is integrated with the operating body 68, and a conventionally known rotation mechanism (not shown) that is connected to the operating rod 70 and rotates the switching section 4 by a predetermined amount. There is. That is, each time the operating rod 70 is pushed, the switching section 4 rotates one step in the direction of the arrow by one mark, that is, the first input mark 12 rotates to the position of the eighth input mark 26. Further, the operating means 10 is
When the operation rod 70 is pushed together with the operation body 68, the operation rod 70 returns to its original position.

The changeover switch 2 configured in this way has the fifth
As shown in Figures 1 to 8, it is used in an electrostatic holding device 74 that attracts and holds an object 72.

This electrostatic holding device 74 includes an insulating base layer 76,
a set of electrodes 78 to which positive and negative charges are applied, respectively;
It is constructed by sequentially laminating an adsorption layer 80 which is dielectrically induced by this set of electrodes 78 and which attracts and holds the object 72 by electrostatic attraction force. The changeover switch 2 is interposed between the electrode 78 of the electric circuit 82 and the power source section 84.

Next, the operation of this embodiment will be explained.

In FIG. 1a, when the operating rod 70 is pressed to establish conduction to the electrostatic holding device 74, the first input contact 52
Since the first connecting body 44 and the first output contact 60 are connected, the first output contact 60 and the third electric path 64 have positive polarity. Also at this time, the second input contact 5
4, the third communication body 48, and the second output contact 62 are connected, so that the second output contact 62 and the fourth electric path 66 are connected to each other.
has negative polarity (see Figure 1b). This results in
The changeover switch 2 is turned on, and the operating rod 7 is turned on.
0 is returned to its original position and locked. In the electrostatic holding device 74, as shown in FIG.
When the object 72 to be attracted is bonded to the adsorption layer 80, the object 72 to be attracted is strongly attracted and held by the adsorption layer 80 by the electrostatic attraction force.

Next, when detaching the object 72, as shown in FIG. 2a, when the operating rod 70 is pushed again, the switching part 4 rotates one step in the direction of the arrow. However, the second input mark 1 located at the first input contact 52
4 and the second output mark part 30 are not in contact with each other, and the sixth input mark part 22 located at the second input contact 54 and the sixth output mark part 38 are not in contact with each other. It returns to a non-conducting state (see FIG. 2b), so no current flows through the first and second output contacts 60 and 62 of the output side body 8, and the changeover switch 2 is locked in the OFF state. . Therefore, in the electrostatic holding mechanism 74, the power to the electrode 78 is cut off,
The adsorbed object 72 can be easily peeled off from the adsorption layer 80 (see FIG. 7).

Then, when power is supplied again to the electrode 78 of the electrostatic holding device 74, as shown in FIG. 3a, when the operating rod 70 is pushed, the switching section 4 rotates one step in the direction of the arrow. That is, the third input mark part 16 is located at the first input contact 52, and the seventh input mark part 24 is located at the second input contact 54. As a result, the first input contact 52, the second communication body 46, and the second output contact 62 are connected, so that the second output contact 62 and the fourth electric path 66 have positive polarity. On the other hand, since the second input contact 54, the fourth communication body 50, and the first output contact 60 are connected, the first output contact 60
0 and the third electric path 64 have negative polarity. In other words,
As shown in FIG. 3b, the polarity is converted and the changeover switch 2 is locked in the on state. By converting the polarity in this way, the adsorption force at the electrode 78 is maintained at a predetermined level, and when the adsorption layer 80 adsorbs the object 72, the object 72 is strongly attracted and held ( (See Figure 8).

That is, in the past, the object 72 was suctioned and held and peeled off by simply turning on and off the power supply.
In this embodiment, one changeover switch 2 can turn on and off the power supply and easily change the polarity, thereby improving the stability of the object 72 to be attracted.

Furthermore, when detaching the adsorbed object 72 from the adsorption layer 80, as shown in FIG. 4a, when the operating rod 70 is pushed again, the switching part 4 rotates one step in the direction of the arrow. However, the fourth input stamp section 18 and the fourth output stamp section 34 do not communicate, and the eighth input stamp section 26
and the eighth output mark part 42 are not in communication, so no current flows through the first and second output contacts 60 and 62 of the output side body 8 (see No. 4b). Further, the changeover switch 2 is locked in the off state. This results in
In the electrostatic holding mechanism 74, the adsorption layer 80 can easily peel off the object 72 (see FIG. 7).

Further, when the object 72 to be attracted is to be held by the adsorption layer 80 again, when the operating rod 70 is pushed, the switching section 4 rotates one step in the direction of the arrow. At this time, the first input contact 52 communicates with the first output contact 60 via the third communication body 48, and the second input contact 54 communicates with the second output contact 62 via the first communication body 44. As a result, the changeover switch 2 is turned on and locked, the third electric circuit 64 becomes positive polarity, the fourth electric circuit 66 becomes negative polarity, and the polarity returns to its original state.

Similarly, each time the operating rod 70 is pressed,
The switching unit 4 sequentially rotates one step at a time in the direction of the arrow to temporarily change the polarity into a non-conducting state.

Therefore, according to this embodiment, by once changing the polarity to a non-conducting state, the object to be attracted 72
The polarity is changed each time the object 72 is attracted and held, and the electrostatic attraction force is maintained at a predetermined level, thereby making it possible to stably hold the object 72 by attraction.

Furthermore, according to the configuration of this embodiment, each communication body is housed within the switching section 4, which is advantageous in terms of structure, and also reduces the occurrence of failures.
Moreover, since the power can be turned on and off and the polarity can be changed by one changeover switch 2, the usability is improved and the operability is improved, which is advantageous in practice.

[Effects of the Invention] As is clear from the above detailed description, the present invention includes a cylindrical rotatable switching section, an operating rod that is reciprocated to rotate the switching section by a predetermined amount, and the switching section. an input side body installed on one end surface of the switching section; an output side body installed on the other end surface of the switching section; 8 input stamp part and this first
~first to eighth output stamps formed at equal intervals in the circumferential direction on the periphery of the other end surface of the switching section facing the eighth input stamp; the first input stamp and the first output stamp; a first communication body that communicates between the third input stamp section and the seventh output stamp section; a second communication body that communicates the fifth input stamp section and the fifth output stamp section; a fourth connecting body that connects the seventh input marking part and the third output marking part, and a fourth connecting body connected to the positive electrode of the power supply part and facing the first input marking part. a first portion attached to a side surface of the switching portion of the input side body;
an input terminal section, a second input terminal section to which the negative electrode of the power supply section is connected and attached to a side surface of the switching section of the input side body facing the fifth input mark section; and the electrostatic holding device. A first output terminal section is connected to one electrode of the electrostatic holding device and is attached to the side surface of the switching section of the output side body facing the first output marking section, and connected to the other electrode of the electrostatic holding device. and a second output terminal portion attached to the side surface of the switching portion of the output side body opposite to the fifth output marking portion, and a changeover switch is configured, and this changeover switch is connected to an electrostatic holding device and a power supply portion. By interposing the electrostatic holding device between the electrostatic holding device and the electrostatic holding device, the polarity of the power supply is changed to make the electrostatic holding device conductive after the switch is placed in the non-conducting state. The adsorbed material can be easily removed, the structure is advantageous, and the operability can be improved.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention, and FIG. 1a is a perspective view of the changeover switch with the input side body and output side body separated from the switching section and the operating rod pressed once; FIG. Fig. 2b is a circuit diagram in a conductive state, Fig. 2a is a perspective view of the changeover switch with the input side body and output side body separated from the switching part and the operating rod is pressed twice, and Fig. 2b is a nonconducting state. Circuit diagram, 3rd
Figure a is a perspective view of the changeover switch with the input side body and output side body separated from the switching part and the operating rod pressed three times, Figure 3b is a circuit diagram of the reverse polarity conduction state, and Figure 4a is a perspective view of the changeover switch with the input side body and output side body separated from the switching section and the operating rod pressed four times, Figure 4b is a circuit diagram in a non-conducting state, and Figure 5 is an electrostatic holding device. Schematic perspective view of 6th
The figure is a cross-sectional view of a state in which an object to be attracted is held by the adsorption layer of an electrostatic holding device, FIG. FIG. 3 is a cross-sectional view of a state in which an adsorbent is adsorbed and held by an adsorption layer. In the figure, 2 is a changeover switch, 4 is a changeover section,
6 is an input side body, 8 is an output side body, 10 is an operating means,
44 is a first communication body, 46 is a second communication body, 48 is a third communication body, 50 is a fourth communication body, 52 is a first input contact, 54 is a second input contact, 60 is a first output contact,
62 is a second output contact, 68 is an operating body, 70 is an operating rod, 72 is an object to be attracted, 74 is an electrostatic holding device,
78 is an electrode, 82 is an electric circuit, and 84 is a power source.

Claims (1)

[Claims] 1. An electrostatic holding device that attracts and holds an object to be attracted is provided, a power supply section that supplies power to the electrostatic holding device is provided, and the polarity is changed after a non-conducting state is established between the electrostatic holding device and the power supply section. The switch includes a cylindrical and rotatable switching section, an operating rod that is reciprocated to rotate the switching section by a predetermined amount, and a switch that is connected to one end surface of the switching section. an input side body installed on the other end surface of the switching section, an output side body installed on the other end surface of the switching section, and first to eighth input marking sections formed at equal intervals in the circumferential direction on the periphery of the one end surface of the switching section. , first to eighth output stamp parts formed at equal intervals in the circumferential direction on the periphery of the other end surface of the switching part, facing the first to eighth input stamp parts; The first output marking section is connected to the first output marking section.
a connecting body, a second connecting body that connects the third input stamp section and the seventh output stamp section, and a third connecting body that connects the fifth input stamp section and the fifth output stamp section; a fourth connecting body that connects the seventh input stamp section and the third output stamp section; and a switching section of the input body connected to the positive electrode of the power supply section and facing the first input stamp section; a first input terminal section attached to a side surface; and a second input terminal connected to the negative electrode of the power supply section and attached to a side surface of the switching section of the input side body facing the fifth input mark section. a first output terminal portion connected to one electrode of the electrostatic holding device and attached to a side surface of the switching portion of the output body opposite to the first output marking portion; a second electrode connected to the other electrode of the holding device and attached to the side surface of the switching section of the output side body facing the fifth output marking section;
1. A changeover switch comprising an output terminal section.