JP2003106496A - Mist lubricating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost and reliable mist lubricating device having no conventional atomizer, atomizing lubricating oil using static electricity alone, and taking account of the environment. SOLUTION: A delivery port 311 of an oil feed pipe 3 feeding the lubricating oil O is faced near a lubricating object part 4 and a prescribed high voltage is impressed between them by a high-voltage power supply so that the lubricating oil delivered from the delivery port 311 is atomized by the static electricity alone and fed to the lubricating object part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mist lubrication device for supplying lubricating oil in a mist (atomized) state to a lubricated portion, and more specifically, it applies mist by applying a high voltage to the lubricating oil. The present invention relates to an electrostatic atomization type mist lubrication device.

[0002]

2. Description of the Related Art In consideration of recent environmental problems and the like, lubricating oil tends to be used in a minimum amount. On the other hand,
Due to the progress of higher rotation speed and higher output of machine tools, the lubricating oil is required to have not only a lubricating function for the bearing portion but also a cooling function for lowering the bearing temperature. Therefore, as one of the lubrication methods, a mist lubrication method in which the amount of lubricating oil used is small and the cooling effect on the bearing portion is high is used.

The mist lubrication system is a lubrication system in which the lubricating oil is supplied to a lubricated portion such as a bearing in a mist (atomized) state. For example, a venturi nozzle is used to mist the lubricating oil to obtain compressed air. Along with this, a method of spraying and lubricating the portion to be lubricated is generally well known.

Further, Japanese Patent No. 3100175 discloses that
As an example of this application, a spraying method has also been proposed in which a high voltage is applied to lubricating oil that has been misted in advance by an atomizing device such as a venturi nozzle, and the charged lubricating oil is supplied to the lubricated portion.

[0005]

However, any of the methods has the following problems because it requires a venturi nozzle and an atomizing device such as an air pump for supplying compressed air to the nozzle.

First, the device itself is large-scale and the cost is high. Next, if you transfer the oil mist using compressed air,
The exhaust treatment becomes a problem. That is, the oil mist generated by the atomizer is fine particles of a few μm unit,
The lubricating oil actually consumed in the lubricated portion is a very small amount. Therefore, the oil mist remaining without being consumed in the lubricated portion is discharged to the outside air by riding on the exhaust air, which is one of the factors that deteriorate the environment (work environment) in the factory. In addition, the amount of power consumed by operating the air pump will be considerable during the year.

Furthermore, the particle size of the mist generated by the atomizing device is non-uniform, and among them, lubricating oil with a large particle size may adhere to the pipe and block the transfer passage.
So, in the past, even if the lubricating oil adheres to the inside of the piping route, the route of the piping is devised so that the route is not blocked,
It is necessary to provide a means for preventing the lubricating oil from staying, such as providing a drain mechanism, which also causes a cost increase.

According to the distribution valve type lubrication apparatus which supplies the lubricating oil to the lubricated portion intermittently (intermittently), the problem of exhaust mist does not occur, but the distribution valve type is used. In the case of, the oil discharge amount per time is set to be considerably higher than the actual consumption amount in consideration of the safety (prevention of seizure) of the lubricated portion, and thus the speed of the lubricated portion is increased as described above. Therefore, in order to discharge the lubricating oil with high frequency, there is a large amount of wasted oil (leak oil amount), which is not economical.

Therefore, the present invention is based on the above-mentioned "environmental problem".
It was made to solve various problems such as “cost reduction” and “reduction of lubricating oil consumption”, and the purpose is to make the lubricating oil mist by using only electrostatic force to make it more environmentally friendly. In consideration, it is to provide an inexpensive and reliable mist lubrication device.

[0010]

To achieve the above object, the present invention includes a tank for storing lubricating oil and an oil feed pipe for guiding the lubricating oil in the tank to a portion to be lubricated. In the mist lubrication device that supplies oil to the lubricated portion in a state of being atomized, a direct current high voltage power supply is provided,
The discharge port of the oil feed pipe is made to face the vicinity of the lubricated portion, and by applying a predetermined high voltage by the high voltage power supply during that, the lubricating oil discharged from the discharge port is atomized, It is characterized in that it is supplied to the portion to be lubricated.

According to this, by applying a high voltage to the lubricating oil discharged from the discharge port, the electrostatic force acting on the lubricating oil cancels gravity and surface tension, so that the lubricating oil is atomized and the conventional Lubricating oil can be atomized without an atomizer.

As a method of applying a high voltage to the lubricating oil,
An electrode wire connected to one pole of the high-voltage power supply may be wired in the oil feed pipe, or the oil feed pipe itself is made of a conductive material and is connected to one pole of the high-voltage power supply. May be. According to this, it is possible to integrate the high-voltage electrode wire with the oil feed pipe, which is inexpensive and easy to assemble.

As a more specific embodiment, the oil feeding pipe is
It is connected to a secondary discharge port of a distributor that distributes and supplies the lubricating oil to a plurality of the lubricating parts, the distributor is equipped with the high-voltage power supply, and the discharge port has:
Connection means is provided for electrically connecting the oil feed pipe to the high voltage power supply. According to this, the lubricating oil can be supplied to a large number of parts to be lubricated at the same time, and electrical connection can be performed at the same time, so that the assemblability and the maintainability are good.

More preferably, the high-voltage power source is a variable power source and is provided for each discharge port of the distributor. That is, when the voltage is low, the lubricating oil is supplied to the lubricated portion in the form of threads, and when the voltage is high, the oil mist spreads and is supplied to the lubricated portion.

The connecting means is inserted into each discharge port of the distributor, and is inserted into the distributor-side insert tube connected to one pole of the high-voltage power source and the discharge port connecting side of the oil feed pipe. The insert tube including the oil feed pipe side is forcibly contacted with each of the insert tubes by a connecting member that connects the oil feed pipe to the discharge port.

In order to perform electrostatic atomization, it is necessary to finely control the flow velocity of lubricating oil. Therefore, each discharge port of the distributor is provided with an electrostatic pump for quantitatively supplying the lubricating oil. According to this, by using the electrostatic pump, it becomes possible to send out the lubricating oil at the molecular level, and it is possible to control the oil mist generation amount and the like.

Further, the high voltage power supply, the discharge port of the oil feed pipe, and the current path including the lubricated portion detect the lubricating oil supplied to the lubricated portion. Means are provided. According to this
It is possible to confirm whether or not the mist lubricating oil is surely supplied to the lubricated portion, and it is possible to prevent poor lubrication.

In order to manufacture at a lower cost, it is preferable that the high voltage power source and the detecting means are integrated with the distributor.

As a method of supplying the electrostatically atomized mist lubricating oil to a portion to be lubricated a little away, the electrostatic atomized lubricating oil is provided between the discharge port and the portion to be lubricated. It is preferable to provide an air supply means for transferring to the lubricated portion, whereby the lubricating oil atomized by electrostatic atomization can be carried on the air to be delivered to the lubricated portion. The air supply means does not exert a Venturi effect on the discharge port.

In order to prevent the charged lubricating oil from adhering to a portion other than the lubricated portion during transfer of the lubricating oil, the electrostatic oil atomized lubricating oil is provided between the discharge port and the lubricated portion. It is preferable that an oil-proof drop treatment is performed to prevent the oil from adhering to parts other than the lubricated part. As an example of the oil-proof droplet treatment, there are an insulation treatment for preventing charged oil particles from adhering, and a fluororesin treatment for making the lubricating oil slippery.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment of the present invention.
The mist lubrication device according to the embodiment, and the first embodiment is the most basic form of the present invention.

As shown in FIG. 1, this mist lubrication apparatus 1
Is a tank 2 for storing the lubricating oil O, an oil feeding pipe 3 for feeding the lubricating oil O pumped up from the tank 2 to the lubricated portion 4, and a high DC voltage for applying the lubricating oil O to the lubricating oil O. And a high voltage power supply 5.

The oil supply pipe 3 is made of a flexible resin pipe such as nylon, and one end thereof is lubrication oil O in the tank 2.
Is connected to a pump circuit 6 for pumping up, and the other end side is connected to a nozzle head 31 facing the vicinity of the lubricated portion 4. The inner diameter of the nozzle head 31 decreases from the connection end side of the oil feed pipe 3 toward the discharge port 311 on the front end side.

In this embodiment, the nozzle head 31 is attached to the tip end side of the oil feed pipe 3 to discharge the lubricating oil O.
However, the discharge port 311 may be integrally formed by narrowing the tip of the oil feed pipe 3 into the nozzle head 31.

The pump circuit 6 includes an oil pump 61 driven by a driving means (not shown), and the oil pump 6
A valve 62 having a return circuit for returning excessive lubricating oil to the tank 2 again from the lubricating oil O pumped up in 1.
It has and.

In this embodiment, the valve 62 is used as a method for returning the unnecessary lubricating oil O to the tank 2, but a check valve or the like may be used instead of this, and a minute pressure is always generated in the supply pipe. It can be appropriately selected as long as it has a mechanism for doing so.

Further, the lubricating oil O from the tank 2 to the oil feeding pipe 3
The lubricating oil O may be pushed out by applying a slight air pressure into the tank 2 to press the oil surface to push out the lubricating oil O. Any suitable flow rate can be selected as long as the flow rate can be obtained.

In the oil feed pipe 3, one end is connected to one pole of the high voltage power source 5, which is the cathode side in this embodiment, and the other end is an electrode wire 5 extending toward the internal space of the nozzle head 31.
1 is provided. The electrode wire 51 is composed of, for example, a metal wire such as tungsten suitable for electrostatic atomization, or a wire woven into a wire.

In this embodiment, the electrode wire 51 is made of a metal wire inserted along the inside of the oil feed pipe 3, but in addition to this, the oil feed pipe 3 itself is made of a conductive material, The oil feed pipe 3 itself may be used as an electrode wire. Such an aspect is also included in the present invention.

That is, as a method for making the oil feed pipe 3 itself conductive, the oil feed pipe 3 is formed of a conductive resin, or a metal wire is woven into a pipe shape like a coaxial cable and coated with an insulating resin. Or a method of depositing a metal film on a synthetic resin pipe by vapor deposition. The simplest method is to use a metal pipe for the oil feed pipe 3. However, when a metal pipe is used for the oil feeding pipe 3, it is better to cover the outer skin with an insulating coating in consideration of safety.

The other electrode wire 52 connected to the high-voltage power supply 5 is connected to the lubricated portion 4. In this embodiment, the electrode wire 52 is directly connected to the lubricated portion 4 in the drawing, but can be appropriately selected and connected at a place where electrical continuity can be obtained with the lubricated portion 4. .

On the electrode wire 52, a monitor (detection means) 7 for detecting whether or not the lubricating oil O is surely supplied from the discharge port 311 to the lubricated portion 4 is provided. As shown in FIG. 2, the monitor 7 includes a high voltage power source 5, a discharge port 31
1 is composed of a current detection resistor R provided in a loop circuit including the oil feed pipe 3 and the lubrication target portion 4, and when a high voltage is applied by a high voltage power source 5, electrostatic atomization occurs and the loop circuit is formed. A current i flows to the.

At this time, the current detection resistor R in the loop circuit
By capturing the output voltage difference caused by the output voltage of V ₀ = i × R, it is possible to determine whether or not the lubricating oil is misted from the discharge port and is flying to the lubricated portion.

When the mist lubrication system 1 is operated, the lubricating oil O in the tank 2 is pumped up by the oil pump 61 and fed into the oil feed pipe 3. At this time, unnecessary lubricating oil is drawn back into the tank 2 via the check valve 62. The lubricating oil O fed into the oil feed pipe 3 advances toward the nozzle head 31 while a high voltage is applied by the electrode wire 51 provided inside.

When a direct current voltage of several kV is applied to the lubricating oil O discharged from the discharge port 311, and when the electrostatic force acting on the lubricating oil O reaches a critical value, the gravity or surface tension acting on the lubricating oil O is reduced. It cancels, divides innumerably, and becomes a mist. The value of the critical voltage Vc at which atomization occurs is given by Vc ² = crv. Here, c is a constant determined by the shape of the droplet, r is the radius of the droplet, and r is the surface tension of the liquid.

The misted lubricating oil O is drawn toward the lubricated portion 4 to which the electrode wire 52 is connected, and lubricates the lubricated portion 4. At this time, since the lubricating oil O is charged with a negative (-) electric charge, it is evenly adsorbed by the lubricated portion 4 on the positive pole side.

According to this, the oil mist is generated in the vicinity of the lubricated part 4, and the oil mist is generated without using compressed air.
To the lubrication part 4, and most of it is consumed in the lubricated part 4, so that there is no wasteful consumption of lubricating oil as in the conventional case.
Moreover, the environment of the factory is not deteriorated by the exhaust problem.

FIG. 3 shows a mist lubricating device 1a according to the second embodiment of the present invention. The second embodiment is a mode closer to the product level than the first embodiment, and the same reference numerals are attached to the portions having the same or the same basic configurations as those of the first embodiment.
The description is omitted.

The feature of this second embodiment is that a distributor 8 is provided between the tank 2 and the oil feed pipe 3. That is, as shown in FIG. 4, the distributor 8 is made of an insulating material such as synthetic resin, and has one primary side port 81 connected to the pump means 6 and lubrication supplied to the primary side port 81. A large number of secondary side discharge ports 82a to 82n are provided to distribute and supply oil to the plurality of oil feed pipes 3a to 3n.

Secondary side discharge port 82a of this distributor 8
82n includes a high voltage power source 5a for supplying a high voltage to the oil feeding pipes 3a to 3n connected to the respective secondary side discharge ports 82.
.About.5n are connected via electrode lines 51a to 51n, respectively.

According to this, it becomes possible to connect a large number of oil feed pipes 3a to 3n via the distributor 8, and the lubricating oil O can be supplied to a plurality of lubricated portions 4a to 4n at one time. Further, the distributor 8 applies the high voltage of the high voltage power source 5 to each oil feed pipe 3a.
By having a hub function of distributing to 3n, it becomes easier to construct the entire system.

In order to control the amount of oil mist supplied from the distributor 8 to the lubricated parts 4a to 4n, in the second embodiment, the high voltage power supplies 5a to 5n are connected to the discharge ports 82.
Each of a to 82n is a variable power source that can be individually adjusted. According to this, each discharge port 82a-82n
The voltage applied to each can be controlled, and a stable oil mist can be supplied according to the specifications of the lubricated parts 4a to 4n.

Further, as the high-voltage power source 5 is controlled individually, the monitors 7 are individually provided to the lubricated parts 4a to 4n.
a to 7n are connected. According to this, it is possible to reliably determine whether or not the lubricating oil O is supplied to each of the supplied parts 4a to 4n.

FIG. 5 shows the structure of a connecting portion for connecting the distributor 8 and the oil feed pipe 3. 2 of this distributor 8
The oil feed pipe 3 is connected to the secondary discharge port 82 via a connecting member 83. The connecting member 83 is formed of a nut screw into which the oil feed pipe 3 is inserted from one end and the other end side is screwed into the secondary discharge port 82, and a seal member 84 for sealing the oil feed pipe 3 is provided inside. There is.

In the second embodiment, the distributor 8 also has a hub function for supplying a high voltage to each oil feed pipe 3. Therefore, a distributor-side insert tube 91 is inserted into the secondary side discharge port 82 as a connecting means for reliably obtaining conduction with the oil feed pipe 3, and the oil feed pipe is provided at the opening end of the opposed oil feed pipe 3. The side insert tube 92 is inserted.

Both of the insert tubes 91 and 92 are made by bending one end of a metal cylindrical pipe by 180 ° and
The enlarged diameter portions 911 and 921 are bent in a U-shaped cross section, and the enlarged diameter portions 911 and 922 are connected to face each other.

An electrode terminal 511 connected to the high voltage power source 5 is press-fitted on the outer peripheral surface of the distributor 8, and the lower end side of this electrode terminal 511 is a distributor-side insert tube 91.
One of the distributor-side insert tubes 91 is electrically connected by forcibly contacting the outer peripheral surface of the distributor insert tube 91.

The other oil feeding pipe side insert tube 92
The electrode wire 51 is connected between the outer circumference of the tube and the inner circumference of the oil feed pipe. According to this, by connecting each oil feed pipe 3 to each secondary discharge port 82 and forcibly tightening it by the connecting member 83, each insert tube 91,
The enlarged diameter portions 911, 921 of the 92 are in contact with each other, so that conduction between the distributor 8 and the oil feed pipe 3 is obtained.

A more specific embodiment of the distributor 8 is shown in FIG. The distributor 8 has a high-voltage power supply 5 and a monitor 7 for monitoring the high-voltage power supply 5 which are integrated in the distributor body. According to this, since the distributor 8 is unitized, the lubricating system centering on the distributor 8 can be integrally manufactured at low cost.

The electrostatic atomization type mist lubrication apparatus of the present invention comprises:
If the flow velocity of the lubricating oil O is too fast, the lubricating oil O will flow from the discharge port 311.
Will not be atomized and will fall off, and if the flow velocity is too slow, the amount of supply to the lubricated portion 4 will be small, which may cause poor lubrication. Therefore, in order to stably control the amount of oil mist generated, each secondary side discharge port 82a of the distributor 8 is provided.
It is preferable that the electrostatic pumps 10a to 10n are provided at the positions up to 82n.

The electrostatic pump is a non-movable pump utilizing electrostatic force, and the transferred object can be sent out at the molecular level by sequentially switching the voltage of the electrodes along the transfer direction. It is a pump. According to this, the amount of the lubricating oil O can be variably adjusted according to the supply specifications of the respective oil feeding pipes 3a to 3n, and a very small amount can be adjusted. Furthermore, since it is sufficient to supply the electric power to the electrostatic pump 10 from the high-voltage power source 5 built in the distributor 8, the cost can be reduced. Such an aspect is also included in the present invention.

By the way, the lubricated portion 4 is not always arranged adjacent to the discharge port 311 of the oil feed pipe 3, but rather the lubricated portion 4 of a machine tool or the like is hidden inside. In many cases. Therefore, it may be difficult to connect the oil feed pipe 3 to the inside of the machine.

Therefore, an example of a method of applying the mist lubrication apparatus of the present invention when the portion to be lubricated is at a remote place is shown in FIG. 7 as a third embodiment. That is, the mist lubrication device 1 b includes the atomizer 11 that atomizes the lubricating oil O fed by the oil feed pipe 3 and feeds it to the lubrication target portion 4.

The atomizer 11 has the discharge port 3 of the oil feed pipe 3 inside.
11 is connected to the discharge port 311 and a counter electrode 122 is provided on the facing surface side of the discharge port 311. The atomizing chamber 12 is provided below the atomizing chamber 12. The air feed pipe 13 into which the air for sending the mist to the lubricated portion 4 is fed is connected, and the lubricated portion 4 located at a position apart from the atomizer 11 is provided in the center of the counter electrode 122 of the atomizing chamber 12.
Oil mist feed pipes 14 for sending oil mist are provided respectively.

Inside the atomizing chamber 12, except for the counter electrode 122,
The inner surface is subjected to an oil-proofing treatment such as an insulation treatment with a synthetic resin or the like to prevent the oil mist charged by electrostatic atomization from adhering. In addition, in the above-described embodiment, the insulating treatment is performed as the oil-proof treatment, but a fluororesin treatment or the like may also be performed to prevent the oil mist attached thereto from staying.

One end of the air feed pipe 13 is connected to an air feed means (not shown), and air is atomized at a predetermined flow rate in the atomization chamber 12
Can be poured inside. The oil mist feed pipe 14 is made of an insulating resin such as a synthetic resin so that charged oil mist does not adhere to the pipe wall.

According to this, the lubricating oil O sent into the atomization chamber 12 is atomized by applying a high voltage to the counter electrode 122, and atomized from the lower side of the atomization chamber 12. The air introduced into the chamber 12 is carried to the lubricated portion 4 through the oil mist feed pipe 14 and supplied. By operating this method, the mist lubrication device of the present invention can be incorporated in the main shaft or the like.

If oil droplets adhere to the atomizing chamber 12, the lubricating oil O does not stay in the atomizing chamber 12,
The atomizer 11 may be provided with an oil removing mechanism. Such modifications are also included in the present invention.

The present invention can be applied to various fields such as food and medicine, and the atomization target includes not only liquid but also solid matter such as powder, and a polymer impregnated with lubricating oil. Alternatively, it may be a semi-solidified product such as a sol or gel.

[0060]

As described above, according to the present invention,
In a mist lubrication device that includes a tank that stores lubricating oil and an oil supply pipe that guides the lubricating oil in this tank to the lubricated portion, and supplies the lubricated oil in the atomized state to the lubricated portion, a high-voltage DC power supply Is equipped with, and the discharge port of the oil supply pipe is exposed to the vicinity of the lubricated portion, and by applying a predetermined high voltage with a high voltage power supply during that, atomizing the lubricating oil discharged from the discharge port, By supplying to the lubricated portion, it is not necessary to provide a conventional atomizing device utilizing the Venturi effect and the like, and the lubricating oil can be atomized only by the electrostatic force, and a cheaper mist lubricating device can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a mist lubrication device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a structure of a monitor.

FIG. 3 is a schematic diagram of a mist lubrication device according to a second embodiment of the present invention.

FIG. 4 is an explanatory diagram illustrating a piping structure of the second embodiment.

FIG. 5 is a partial cross-sectional view illustrating the internal structure of the distributor.

FIG. 6 is an explanatory diagram illustrating a state where the distributor is unitized.

FIG. 7 is a schematic diagram of a mist lubrication device according to a third embodiment of the present invention.

[Explanation of symbols]

1,1a, 1b Mist lubricator 2 tanks 3 oil pipe 31 nozzle head 311 outlet 4 Lubricated part 5 High voltage power supply 51, 52 Electrode wire 6 pumping means 7 monitors 8 distributors 91 Distributor side insert tube 92 Oil tube side insert tube 10 Electrostatic pump 11 atomizer O Lubricating oil

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[Procedure amendment]

[Submission date] January 31, 2002 (2002.1.3
1)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

[0010]

In order to achieve the above-mentioned object, the present invention provides a tank for storing lubricating oil, a pump means, and a portion to be lubricated with the lubricating oil in the tank supplied from the pump means. In a mist lubrication device that supplies the lubricated oil discharged from the oil supply pipe to the lubricated portion in a state of being atomized, and between the discharge port of the oil supply pipe and the lubricated portion. Is equipped with a direct current high-voltage power supply for applying a predetermined high voltage, the discharge port of the oil feed pipe is made to face the vicinity of the lubricated portion, and the lubricating oil discharged from the discharge port is treated as described above. By applying a predetermined high voltage from a high voltage power source, the lubricating oil is atomized at the discharge port portion and supplied to the lubricated portion.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenji Tsuchiya             3-12-12 Higashiikebukuro, Toshima-ku, Tokyo Stocks             Company Masakazu (72) Inventor Toshiro Toshiro             7000-21 Technoland, Hosoe Town, Inasa District, Shizuoka Prefecture               Ohm Electric Co., Ltd. (72) Inventor Takayuki Ishihara             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. F-term (reference) 4F034 AA06 BB04 BB13

Claims (11)

[Claims] 1. A mist lubrication system that includes a tank for storing lubricating oil and an oil feed pipe that guides the lubricating oil in the tank to a lubricated portion, and supplies the lubricated oil to the lubricated portion in an atomized state. The device is equipped with a direct current high voltage power supply, the discharge port of the oil feed pipe is exposed to the vicinity of the lubricated portion, and a predetermined high voltage is applied by the high voltage power supply in the meantime A mist lubrication device, characterized in that the lubricating oil discharged from an outlet is atomized and supplied to the lubricated portion. 2. The mist lubrication device according to claim 1, wherein an electrode wire connected to one pole of the high-voltage power supply is provided in the oil supply pipe. 3. The oil feed pipe itself is made of a conductive material,
The mist lubrication device according to claim 1, which is connected to one pole of the high-voltage power supply. 4. The oil supply pipe is connected to a secondary discharge port of a distributor that distributes and supplies the lubricating oil to the plurality of lubricated parts, and the distributor has the high-voltage power supply. The mist lubrication device according to claim 1, wherein the discharge port is provided with connecting means for electrically connecting the oil feed pipe to the high-voltage power supply. 5. The mist lubrication device according to claim 4, wherein the high-voltage power supply is a variable power supply and is provided for each discharge port of the distributor. 6. The distributor is inserted into each discharge port of the distributor, and is connected to a distributor-side insert tube connected to one pole of the high-voltage power source, and to the discharge port connection side of the oil supply pipe. The mist lubrication device according to claim 4 or 5, further comprising: an oil feed pipe side insert tube that is forcibly contacted with each other by a connecting member that connects the oil feed pipe to the discharge port. 7. The mist lubrication according to claim 4, wherein each discharge port of the distributor is provided with an electrostatic pump for quantitatively supplying the lubricating oil. apparatus. 8. A current detecting resistor for detecting that the lubricating oil is supplied to the lubricated portion is provided in a current path including the high-voltage power supply, the discharge port of the oil feed pipe, and the lubricated portion. 8. A detecting means is provided.
The mist lubrication device according to any one of 1. 9. The high-voltage power supply and the detection means,
The mist lubrication device according to claim 8, which is integrated with the distributor. 10. An air supply means for transferring the electrostatically atomized lubricating oil to the lubricated portion is provided between the discharge port and the lubricated portion. 9. The mist lubrication device according to any one of 9 above. 11. An oil-proof drop treatment is provided between the discharge port and the lubricated portion so that the electrostatically atomized lubricating oil does not adhere to portions other than the lubricated portion. The mist lubrication device according to claim 10, which is provided.