JP4589174B2 - Static eliminator - Google Patents

Description

  The present invention relates to a static eliminator that discharges ions generated by corona discharge in a state where a voltage is applied to a discharge needle onto air supplied by an air supply means toward a static elimination object.

In this type of static eliminator, a plurality of static eliminators are connected to each other in order to ensure a large static erasure range (see Patent Document 1).
Japanese Patent No. 2899272

  However, in the above-mentioned configuration, since the static eliminators are directly connected to each other, each static eliminator can be arranged only on a straight line, and it becomes difficult to arrange depending on the installation environment, and restrictions on the arrangement position and the arrangement direction. There is a problem that is large.

  This invention is made | formed in view of the said situation, The objective is to provide the static elimination apparatus which can make those arrangement positions and arrangement directions arbitrary, connecting several static elimination apparatus.

  The present invention includes a discharge needle, air supply means for receiving air from outside and supplying air near the discharge needle, and control means for controlling a voltage application state to the discharge needle, In a static elimination device that discharges ions generated by corona discharge in the state of voltage application to the needle onto the air supplied by the air supply means toward the static elimination object, air supply of other static elimination devices in a connected state A flexible air supply connecting means capable of supplying air from the air supply means is provided for the means (claim 1).

  In the above configuration, the air supply means is configured such that openings are provided at both ends of a substantially linear air passage, and a closure lid is attached to the opening located in the air blowing direction. A plurality of joints are provided along the air passage of the air supply means and are attached in place of the closing lid portion, and the connecting means for supplying air is connected to a joint attached in place of the closing lid portion. (Claim 2).

The air supply connecting means may have a branch opening that receives air from the outside and can supply the air to the other static eliminator (claim 3).
You may make it provide the flexible electrical connection means which can supply at least power supply to another static elimination apparatus in the connected state (Claim 4).

The control means outputs a binarization level indicating its own predetermined state through the electrical connection means when no other static eliminator is connected or the self is at the lowest position, and the self is the lowest. If not located at the lower level, a binary value indicating the logical product of the binarization level indicating the predetermined state and the binarization level indicating its own predetermined state input from the lower-level static eliminator through the electrical connection means The conversion level may be output (claim 5).
The predetermined state may be a state in which a static elimination operation has been executed (claim 6).

  According to the invention of claim 1, when the air supply means receives air from the outside, the air supply means supplies air to the vicinity of the vicinity of the discharge needle. Thereby, in the voltage application state to the discharge needle, ions generated by the corona discharge can be put on the air and discharged toward the static elimination object.

  Here, in a state where a plurality of static eliminators are connected by the air supply linking means, air can be supplied from its own air supply means to the air supply means of other static eliminators. Can also neutralize the static elimination object. In this case, since the air supply connecting means is flexible, the disposition position and disposition direction of each static eliminator can be made arbitrary.

According to the invention of claim 2, since a plurality of discharge needles are provided along the air passage of the air supply means, the discharge needles are positioned substantially on a straight line.
Here, in order to increase the static elimination range, a joint is attached instead of the closing lid portion closing the opening of the air passage of the air supply means, and the air supply connection means is connected to the joint. Thereby, since air can be supplied to another static elimination apparatus through the connection means for air supply, the static elimination area by the static elimination apparatus can be increased.

According to invention of Claim 3, since air can be supplied from the branch opening part of the connection means for air supply, air can be supplied to another static elimination apparatus, without a pneumatic pressure falling.
According to the fourth aspect of the present invention, in order to supply power to the other static eliminator, the other static eliminator may be connected by a flexible electrical connecting means. The state can be maintained.

According to the fifth aspect of the present invention, the binarization level indicating the predetermined state of the static eliminator is output to the upper static eliminator, and the upper static eliminator and the binarization level input from the lower static eliminator and its own predetermined level Since the logical product of the binarization level indicating the state is output to the higher-level static eliminator, the binarization level indicating the predetermined status is output from the highest level static eliminator only when the predetermined statuses of all the static eliminators match. . Therefore, it is possible to determine whether all the static eliminators are in a predetermined state based on the binarization level output from the highest static eliminator.
According to the sixth aspect of the present invention, it is possible to determine whether all the static eliminators are performing the static elimination operation.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 2 is a perspective view of the entire static elimination apparatus. In FIG. 2, the static eliminator 1 is configured by providing two head units 3 in the main body 2, and an air flow containing ions is blown forward from the head units 3. Yes.
The main body 2 is configured by assembling a pneumatic part to the main body case 4, and the pneumatic part will be described. The surface of the main body case 4 is subjected to metal plating, and has a shielding function by being connected to 0V of a power source described later.

FIG. 4 shows a cross section of the pneumatic part. In FIG. 4, the main substrate 6 is mounted with two step-up transformers 7 (only one of which is shown in the figure) forming a high-voltage generating section.
The pneumatic section (corresponding to air supply means) 10 is configured by connecting a swing unit 12, an electrode 13, an introduction unit 14, and a one-touch joint (corresponding to a joint) 15 to both ends of the relay unit 11 (however, One-touch joint 15 is only one). Parts other than the one-touch joint 15 are formed with through-holes (indicated by adding “a” to each symbol) along the assembly direction to form an air passage inside the pneumatic unit 10. In FIG. 4, only the swing unit 12, the electrode 13, and the introduction unit 14 connected to one side of the relay unit 11 are illustrated.
More specifically, one end of the swing unit 12 is inserted into both ends of the relay unit 11 in an airtight state by the O-ring 17. The O-ring 17 is made of fluorine rubber having ozone resistance.

  The swing unit 12 is formed with a hollow shaft body portion 18 projecting in a direction perpendicular to the assembly direction, and a male screw portion is formed on the outer surface of the shaft body portion 18. The inner peripheral portion of the shaft body portion 18 communicates with the through hole 12 a of the swing unit 12. An electrode 13 is inserted into the other end of the swing unit 12 in an airtight state by an O-ring 19. In this case, a hexagonal step 20 is formed at the end of the swing unit 12, and a nut 21 is formed at the approximate center of the electrode 13, and one end of the electrode 13 is at the swing unit 12. When the nut portion 21 of the electrode 13 is fitted into the step portion 20 of the swing unit 12, the swing unit 12 and the electrode 13 are integrated in a non-rotating state.

The other end of the electrode 13 is inserted into the introduction unit 14 in an airtight state by an O-ring 17. Here, with respect to one introduction unit 14 (corresponding to the opening) shown in FIG. 4, a one-touch joint 15 is attached to the other end and functions as an air inflow portion to the pneumatic portion 10. Further, the other introduction unit 14 (corresponding to the opening) (not shown) is fitted with a closing lid portion 15a (see FIG. 1) at the other end and functions as a closing end portion of the pneumatic unit 10. In addition, the other introduction unit 14 can also function as a connection means with the pneumatic part 10 of the other static elimination apparatus 1 by connecting the one-touch joint 15 instead of the closing lid part 15a.
With the above configuration, both ends of the integrated swing unit 12 and electrode 13 are configured to be rotatably supported by the relay unit 11 and the introduction unit 14.
The pneumatic part 10 having the above configuration is assembled to the main body case 4 to constitute the main body part 2.

  On the other hand, a display / pressure element substrate (not shown) is screwed to the relay unit 11 of the pneumatic unit 10. This display / pressure element board is equipped with a display unit consisting of a power indicator lamp, static elimination indicator lamp, error indicator lamp, pressure abnormal lamp, etc., and a pressure element is mounted on the back of the indicator / pressure element board. In a state where the element substrate is attached to the relay unit 11, the pressure element detects the pressure in the pneumatic unit 10. The display / pressure element substrate is connected to the main substrate 6 by a lead wire (not shown), and the display unit and the pressure element can operate in the connected state.

The main body case 4 includes a lower case 26 and an upper case 27 (see FIG. 2), and the pneumatic unit 10 is relayed from below the lower case 26 in a state where the pneumatic unit 10 having the above-described configuration is positioned in the lower case 26. The unit 11 is screwed. The base end portion of the electrode spring 28 is soldered to the output terminal of the step-up transformer 7, and the tip end portion contacts the outer peripheral surface of the electrode 13 of the pneumatic unit 10, so that the step-up transformer 7 is electrically connected to the electrode 13. (See FIG. 3).
The upper case 27 is attached to the lower case 26 in a one-touch manner in a state in which the upper case 27 is prevented from being detached, whereby the substrate unit 5 and the introduction unit 14 of the pneumatic unit 10 are sandwiched and fixed between the lower case 26 and the upper case 27.

  Here, two window portions 29 (see FIG. 2) are formed on the front surface of the main body case 4 including the lower case 26 and the upper case 27, and the swing unit 12 in the pneumatic unit 10 extends from the window portions 29. The shaft body portion 18 protrudes. The window portion 29 is formed in accordance with the rotation range of the swing unit 12.

  The head unit 3 is mounted on the shaft body portion 18 of the swing unit 12 in the pneumatic unit 10 having the above configuration. Further, as shown in FIG. 2, a metal angle indicator portion 30 is attached to the periphery of the window portion 29 of the main body portion 2.

Returning to FIG. 1, in the head unit 3, the discharge needle 32 is press-fitted into the holder 31, and the compression needle spring 33 is wound around the discharge needle 32 and the O-ring 34 is mounted in an airtight manner. It is inserted into the shaft body portion 18 of the unit 12. The cylindrical counter electrode 35 is screwed to the shaft body portion 18 of the swing unit 12 with a cylindrical insulating Teflon (registered trademark) tube 36 inserted therein.
With the configuration as described above, the head unit 3 is attached to the swing unit 12.

  A spot facing portion 37 is formed at a predetermined portion of the outer surface of the electrode 13 inserted into the swing unit 12, and one end of the conductive compression coil spring 33 is in contact with the spot facing portion 37. The compression coil spring 33 is used for electrical connection between the electrode 13 and the holder 31 and thus the discharge needle 32.

  Here, the length dimension of the free length of the compression coil spring 33 is set to a dimension that sufficiently exceeds the dimension between the holder 31 and the electrode 13, particularly the maximum expected dimension that allows for a positional deviation during assembly. Thereby, the compression coil spring 33 is in contact with the electrode 13 and the holder 31 in a pressed state.

  On the other hand, in the pneumatic part 10, an air passage communicating from the introduction unit 14 to the swing unit 12 located on the opposite side through the swing unit 12 and the relay unit 11 and the introduction unit 14 is formed by the through holes 14a, 12a, 11a. In addition, an air passage 38 that branches to the head unit 3 side in the swing unit 12 is formed. A plurality of air supply holes 39 are formed in a portion surrounding the discharge needle 32 in the holder 31 constituting the head unit 3, and the air supply holes 39 communicate with the ion generation chamber 40 formed in the counter electrode 35. is doing. In this case, the tip end portion of the discharge needle 32 fixed to the holder 31 is located at a portion surrounded by the Teflon tube 36 in the ion generation chamber 40. Further, the opening of the counter electrode 35 functions as the air discharge port 41, and the air discharge port 41 communicates with the ion generation chamber 40.

The step-up transformer 7 on the main board 6 is electrically connected to the discharge needle 32 through a conduction path through the electrode spring 28, the electrode 13, the compression coil spring 33, and the holder 31.
FIG. 5 schematically shows an electrical configuration of the static eliminator 1 configured as described above. In FIG. 5, as the terminals of the power / input / output connector 8a, 24V terminal, 0V terminal, F.I. G. A terminal, a DSC terminal, an ERROR terminal, a CHECK terminal, a RESET terminal, and a DSC-OFF terminal are provided. As terminals of the connector 8b for connection, 24V terminal, 0V terminal, F.F. G. A terminal, a COM (-) terminal, a DSC-IN terminal, an ERROR-IN terminal, a CHECK terminal, a RESET terminal, and a DSC-OFF terminal are provided. In this case, the power / input / output connector 8a has 8 pins and the connecting connector 8b has 9 pins, so that the connection with the connector of the cable to be connected is not mistaken as will be described later.

  The DSC of the DSC terminal indicates that the static eliminator 1 is performing a discharging operation. The DSC terminal of the power / input / output connector 8a is a terminal that outputs a DSC signal indicating that the discharging operation is being performed. The DSC-IN terminal of the connection connector 8b is a terminal for inputting a DSC signal output from the connected static elimination apparatus 1.

The ERROR terminal is a terminal that outputs an ERROR signal indicating abnormal discharge.
The CHECK terminal is a terminal that outputs a CHECK signal indicating that the discharge needle 32 is detected to be dirty or worn.

The RESET terminal is a terminal to which a RESET signal is given from the outside in order to cancel the ERROR signal. In other words, the ERROR signal is a signal indicating abnormal discharge, and abnormal discharge is in a very dangerous state, so that the static eliminator 1 does not inadvertently cancel the error signal by its own determination.
The DSC-OFF terminal is a terminal for inputting a DSC-OFF signal for stopping the discharge operation.

  Of the terminals of the power / input / output connector 8a and the connecting connector 8b, 24V terminal, 0V terminal, F.I. G. The terminal, the CHECK terminal, the RESET terminal, and the DSC-OFF terminal are commonly connected internally, and the 0V terminal and the COM (−) terminal of the connection connector 8b are commonly connected internally. The 24V terminal and the 0V terminal are connected to a power supply circuit 42 for supplying power to the internal circuit. G. The terminals are connected to a metal plating that covers the main body case 4.

  PNP type first to fourth input transistors 43 to 46 are provided for predetermined terminals of the power / input / output connector 8a and the connecting connector 8b, and NPN type first to third output transistors 47 are provided. -49 are provided. Further, first and second determination circuits 50 and 51 are provided corresponding to the input transistors 43 and 44, respectively.

  The first input transistor 43 is turned on when a low level DSC signal is input from the DSC-IN terminal of the connection connector 8 b, and outputs a high level DSC signal to the first determination circuit 50. The first determination circuit 50 determines the input state of the DSC signal from the first input transistor 43 and the DSC signal output from the control circuit (corresponding to the control means) 52. When both the DSC signals are ON, By turning on the first output transistor 47, the DSC signal of the DSC terminal of the power / input / output connector 8a is turned on.

  In addition, when there is one static elimination device 1 or when the lowest level connected static elimination device 1 is open when the connector 8b for connection is open, the DSC-IN signal is turned OFF, and the DSC signal is converted into the higher-order static elimination device 1. Since the end connector 53 (see FIG. 1) is connected and a dummy low level signal is input to the DSC-IN terminal, the DSC-IN signal is forcibly turned on. Yes.

  The second input transistor 44 is turned ON when a high-level ERROR signal is input from the ERROR-IN terminal of the connection connector 8 b, and outputs the high-level ERROR signal to the second determination circuit 51. The second determination circuit 51 determines the input state of the ERROR signal from the second input transistor 44 and the ERROR signal indicating abnormal discharge output from the control circuit 52. If both ERROR signals are OFF, the second determination circuit 51 By turning on the output transistor, the high-level ERROR signal at the ERROR terminal of the power / input / output connector 8a is turned off. In this case, the reason that the ERROR signal is high active is because the concept of fail-safe is adopted.

  In addition, when the static eliminator 1 is one unit or the lowest level static eliminator, when the connector 8b for connection is open, the ERROR-IN signal is turned ON, and the ERROR signal is output to the upper static eliminator. Therefore, the ERROR-IN signal is forcibly turned off by connecting the end connector 53 and inputting a dummy low level signal to the ERROR-IN terminal.

  The third output transistor 49 is turned on when a CHECK signal requesting that the discharge needle 32 is inspected is supplied from the control circuit 52, and outputs a low-level CHECK signal to the CHECK terminals of both connectors 8a and 8b. To do. In this case, in a state where a plurality of static elimination devices 1 are electrically connected, the third output transistor 49 is connected to a wired OR circuit connected in parallel to the CHECK terminal. When the output transistor 49 is turned on, the CHECK signal at the CHECK terminal of the power / input / output connector 8a of the top-level static eliminator 1 is turned on.

  The third input transistor 45 is turned on when a high level RESET signal is input to the RESET terminal, and outputs the high level RESET signal to the control circuit 52. The RESET terminal is normally used by connecting to 0V. To make the RESET signal valid, the RESET terminal is opened.

  The fourth input transistor 46 is turned on when a high level DSC-OFF signal is input to the DSC-OFF terminal, and outputs a high level DSC-OFF signal to the control circuit 52. The DSC-OFF terminal is normally used by connecting to 0 V. To make the DSC-OFF signal valid, the DSC-OFF terminal is opened.

The control circuit 52 controls the operation of the discharge circuit 54 based on the detection result of the air detection circuit 55 that receives a pressure signal from a pressure element mounted on a display / pressure element substrate (not shown).
That is, when the control circuit 52 determines that the air pressure supplied to the air pressure unit 10 by the air detection circuit 55 is sufficient, the control circuit 52 drives the discharge circuit 54 and at the same time performs a discharge operation. When a signal is output to the first determination circuit 50 and abnormal discharge is detected, an ERROR signal indicating abnormal discharge is output to the second determination circuit 51. When the control circuit 52 detects dirt or wear on the discharge needle 32, the control circuit 52 outputs a CHECK signal indicating that the inspection of the discharge needle 32 is requested to the third output transistor 49, and the third input transistor 45. When the RESET signal is input from, the ERROR signal output to the second determination circuit 51 is canceled, and when the DSC-OFF signal is input from the third input transistor 45, the discharge operation of the discharge circuit 54 is performed. Stop.
In this embodiment, the control means is constituted by the control circuit 52 and the determination circuits 50 and 51 described above.

Next, the operation of the above configuration will be described.
When connecting a plurality of static eliminators 1 having the above-described configuration, an air tube 56 is connected to the one-touch joint 15 of the uppermost static eliminator 1 as shown in FIG. 1 and the opening of the pneumatic unit 10 is closed. The one-touch joint 15 is mounted by removing the closing lid portion 15a, one end of a connecting air tube (corresponding to air supply connecting means) 57 is connected to the one-touch joint 15, and the other end is connected to the one-touch joint of the other static eliminating device 1. 15 is connected. Thereby, the static eliminators 1 can be connected by the connecting air tube 57. Up to five units can be connected to each other. This is because if the number of connected static eliminating devices 1 increases, the air pressure supplied to the neutralizing devices 1 located in the lower order decreases.

  In addition, when the air pressure of the low-order static elimination device 1 is greatly reduced, the control circuit 52 of the static elimination device 1 does not perform the discharge operation based on the detection state of the air detection circuit 55 and the upper static elimination device 1 Since the DSC signal is not output, it is possible to avoid occurrence of a problem even if the air pressure decreases.

On the other hand, the connector 58a of the connection cable 58 is connected to the power / input / output connector 8a of the uppermost static elimination apparatus 1. The connection cable 58 is for supplying power to the static eliminator 1 and for transmitting and receiving signals between the static eliminator 1 and the control device. Further, one connector 59a of a connecting cable 59 (corresponding to an electrical connecting means) 59 is connected to the connecting connector 8b, and the other connector 59b is connected to the power / input / output connector 8a of the subordinate static eliminator 1. Further, the end connector 53 is attached to the connecting connector 8b of the lowest static eliminating device 1. As a result, a low level is given to the DSC-IN terminal and the ERROR-IN terminal of the connecting connector 8b, so that the DSC-IN signal of the connecting connector 8b of the lowest static eliminating device 1 is turned ON and the ERROR-IN signal is Turn off.
In this case, since the connecting air tube 57 that connects the static eliminator 1 is flexible and the connection cable 58 is also flexible, each static eliminator 1 can be in any position and direction as long as their connection is allowed. Can be arranged.

  When air is supplied to the air tube 56 connected to the one-touch joint 15 of the uppermost static elimination device 1, air is supplied to the pneumatic part 10 of the uppermost static elimination device 1 and at the same time through the connecting air tube 57. Air is supplied to the pneumatic unit 10 of the lower static elimination apparatus 1. This air is supplied to the head unit 3 when passing through the interior of the pneumatic unit 10. At this time, since the air supply hole 39 is formed in the holder 31 constituting the head unit 3 so as to surround the discharge needle 32, an air flow flowing along the discharge needle 32 is generated.

  On the other hand, when power is supplied through the connection cable 58, power is supplied to the uppermost static eliminator 1 and to the lower static eliminator 1 through the connection cable 59. In response to the power supply, an alternating high voltage is generated by the step-up transformer 7 of the main board 6 and is supplied to the discharge needle 32 through the electrode spring 28, the electrode 13, the compression coil spring 33, and the holder 31. As a result, corona discharge is generated at the distal end portion of the discharge needle 32, and + ions and − ions are alternately generated around the distal end portion of the discharge needle 32 in accordance with the polarity of the supplied voltage. Here, since an air flow is generated along the discharge needle 32, ions generated by the discharge needle 32 are released forward from the air discharge port 41 of the head unit 3 along the air flow. In this case, since the air discharge port 41 of the head unit 3 opens in the same direction as the needle tip direction of the discharge needle 32, the air flow containing ions is smoothly blown forward from the air discharge port 41.

Then, when an air flow containing ions is sprayed on the object to be neutralized, ions having a polarity opposite to the charge polarity of the object to be neutralized are attracted to the object to be neutralized and neutralized. Thereby, the static elimination object can be neutralized.
Similarly, since the air containing ions is blown to the static elimination object from the static elimination device 1 positioned at the lower level, it is possible to increase the static elimination range.

On the other hand, when the static eliminator 1 is connected to the lower level and all the lower level static eliminators 1 are performing the discharge operation, the DSC-IN signal of the highest level static eliminator 1 is turned ON, and the first Since the determination circuit 50 turns on the first output transistor 47, the DSC signal from the DSC terminal is turned on.
Further, when any one of the static eliminators 1 located below is abnormally discharged, the ERROR-IN signal is turned ON and the second determination circuit 51 turns OFF the second output transistor 48, so that the ERROR terminal ERROR The signal turns on.

  In short, when a plurality of static eliminators 1 are electrically connected, a DSC signal is output from the top static eliminator 1 only when all the static eliminators 1 are performing a discharge operation, and any of the static eliminators When 1 is abnormally discharged, an ERROR signal is output from the static eliminator 1 located at the top.

  In order to cancel the ERROR signal output from the highest-level static eliminator 1, a RESET signal is output to the highest-level static eliminator 1 through the connection cable 58. When stopping discharging of all the static eliminators 1, a DSC-OFF signal is output to the uppermost static eliminator 1 through the connection cable 58.

  According to such an embodiment, when connecting a plurality of static eliminators 1, a flexible connecting air tube 57 is used as a means for supplying air, and a flexible connecting cable 59 is used as a means for electrical connection. Therefore, the arrangement position and the arrangement direction of each static elimination apparatus 1 can be arbitrarily set. Therefore, compared with the structure which connects a some static elimination apparatus on a straight line, the freedom degree of arrangement | positioning of the static elimination apparatus 1 is high, and it can respond to an installation environment flexibly.

  As described above, since the degree of freedom of arrangement of the static eliminator is high, it is possible to effectively cope with an installation environment where the intervals between the static eliminators 1 are not constant as shown in FIG. When there is an object that cannot be moved between the static eliminators 1, the connection air tube 57 can be routed while avoiding the object. Furthermore, when it is desired to remove static electricity from a different direction with respect to the static elimination object, since the connecting air tube 57 can be bent, the static elimination device 1 can be freely arranged. Since such a free arrangement is possible, it is also effective when it is desired to remove electricity from the front and back surfaces of the substrate at the same time.

The present invention is not limited to the above embodiment, and may be modified or expanded as follows.
A T-shaped joint having a branch opening may be connected in the middle of an air tube connected to the static eliminator, and air pressure may be prevented from being lowered by supplying air from the branch opening of the T-shaped joint. .

A plurality of counter electrodes 35 having different opening areas may be prepared, and the counter electrode 35 having a larger opening area may be used as the lower static eliminating device 1 is provided. In this case, an annular elastic member is sandwiched between the counter electrode 35 and the shaft body portion 18 of the swing unit 12, and the inner peripheral opening area of the elastic member is changed depending on how the counter electrode 35 is tightened with respect to the shaft body portion 18. You may do it.
By removing the closing lid 15a that closes the end opening of the pneumatic unit 10 of the lowest level static eliminating device 1 and mounting the one-touch joint 15 and supplying air from the air tube connected to the one-touch joint 15 You may make it aim at the increase in the connectable number of the static elimination apparatus 1. FIG.

The perspective view of the static elimination apparatus shown in the connection state in one Example of this invention Perspective view of static eliminator The perspective view of the electrode which shows the contact state of an electrode spring Partial cross-sectional view showing the pneumatic part of the static eliminator Block diagram showing the electrical configuration of the static eliminator FIG. 1 equivalent diagram showing a case where the arrangement interval is different

Explanation of symbols

  In the drawings, 1 is a static elimination device, 10 is a pneumatic part (air supply means), 15 is a one-touch joint (joint), 15a is a closing lid part, 32 is a discharge needle, 50 and 51 are judgment circuits (control means), 52 Is a control circuit (control means), 57 is a connection air tube (air supply connection means), and 59 is a connection cable (electrical connection means).

Claims (6)

A discharge needle; and air supply means for receiving air from outside and supplying air to the vicinity of the discharge needle;
Control means for controlling the voltage application state to the discharge needle,
In the static eliminator that discharges ions generated by corona discharge in the state of voltage application to the discharge needle on the air supplied by the air supply means toward the static elimination object,
A static eliminator comprising a flexible air supply connecting means capable of supplying air from its own air supply means to an air supply means of another static eliminator in a connected state. The air supply means is configured such that openings are provided at both ends of a substantially linear air passage, and a closing lid is attached to the opening located in the air blowing direction.
A plurality of the discharge needles are provided along the air passage of the air supply means,
Comprising a joint to be attached instead of the closing lid,
The static eliminator according to claim 1, wherein the air supply connecting means is connected to a joint mounted instead of the closing lid.   3. The static eliminator according to claim 1, wherein the air supply connecting means has a branch opening that can receive air from outside and supply the air to the other static eliminator.   4. The static eliminator according to claim 1, further comprising flexible electrical connecting means capable of supplying at least power to another static eliminator in a connected state.   The control means outputs a binarization level indicating its own predetermined state through the electrical connection means when no other static eliminator is connected or the self is at the lowest position, and the self is the lowest. If not located at the lower level, a binary value indicating the logical product of the binarization level indicating the predetermined state and the binarization level indicating its own predetermined state input from the lower-level static eliminator through the electrical connection means 5. The static eliminator according to claim 4, wherein a static level is output. 6. The static eliminator according to claim 5, wherein the predetermined state is a state in which a static elimination operation is executed.

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