JP3472887B2 - Lubrication device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oiling device, and more particularly to an oiling device for injecting oil from an oil tank into a cartridge tank with an oil inlet of a cartridge tank such as an oil stove facing downward.

[0002]

9 and 10 show, for example, Japanese Patent Publication No. 4-46.
FIG. 11 is a vertical cross-sectional view showing an example of a conventional oil injection device disclosed in Japanese Patent No. 836 and a vertical cross-sectional view showing an example of an oil tank, and FIG. 11 is a vertical cross-sectional view showing an example of a connection state between a cartridge tank and an oil tank. It is a figure. Reference numeral 101 is a cartridge tank for containing oil, 102 is a handle, 101a is an oil inlet, 103 is a cap provided at the oil inlet 101a, and 104 is a packing.

Reference numeral 105 is a guide cylinder vertically inserted into the cartridge tank 101 from the oil inlet 101a of the cartridge tank 101, and has an opening 105a which opens in the cartridge tank 101 in the vicinity of the oil inlet 101a. Reference numeral 106 denotes a first valve element which is formed in a cylindrical shape and is slidable in the guide cylinder 105 in the axial direction.
The first spring 107, which is interposed between the guide tube 105 and 05, always biases the opening 105b of the guide tube 105 in a direction to close the opening 105b. 108 is axially slidably disposed in the first stopper 106, and a second spring 109 interposed between the first stopper 106 and a communication pipe 106b, which will be described later, always opens the first stopper 106. The second plug body is urged in a direction to close the portion 106a, and has a communication hole 108a in the first plug body 106 that communicates with the space partitioned by the second plug body 108. 106b has the first stopper 10 at the bottom.
6 is press-fitted and fixed to the upper end portion of the cartridge tank 101.
It is a communication pipe that protrudes inward.

Reference numeral 110 is an oil tank for supplying oil to the cartridge tank 101, and 111 is an oil replenishing port 110a.
Cap 112, a handle 112, a pump 113 installed in the oil tank 110, 114 a pump 11
The drive unit 3 includes a motor, a switch, a battery, and the like. Reference numeral 115 denotes an oil injection connection portion provided in the oil tank 110, which is an oil injection port 1 of the cartridge tank 101.
01a is connected to the inner double tube. In this oil injection connecting portion 115, 116 is an outer pipe body that can be inserted into the opening portion 105b of the guide cylinder 105 of the cartridge tank 101 and has an opening portion 116a on the outer periphery of the tip end portion,
117 can be inserted into the opening 106a of the first plug body 106, and the opening 117 is formed on the outer periphery of the protruding end of the outer tube body 116.
is an inner tubular body having a

The outer pipe body 116 is the oil tank 11
In 0, it is connected to the discharge port of the pump 113 and projects upward from the upper wall of the oil tank 110.
On the other hand, the inner pipe body 117 passes through the outer pipe body 116, penetrates the outer wall of the outer pipe body 116, and opens into the oil tank 110. Reference numeral 118 is an oil detection sensor attached near the opening of the inner pipe 117. Reference numeral 119 is a guide for connecting the oil injection port 101a of the cartridge tank 101 to the oil injection connection 115. 12
0 and 121 are openings 106 of the first stopper 106, respectively.
a is a packing provided on the inner circumference of the opening 105b of the guide tube 105.

The operation of the petroleum injection device configured as described above will be described. First, when the oil inlet 101a of the cartridge tank 101 is pushed down in accordance with the guide 119 of the oil tank 110, the inner pipe 1 of the oil inlet connection portion 115 is pushed down.
The second stopper 1 of the cartridge tank 101 by 17
08 is pushed up, then the first plug body 106 is also pushed up by the outer tube body 116, the tip of the outer tube body 116 enters the guide tube 105, and the connection is completed. As a result, the inside of the cartridge tank 101 and the inner pipe 117 are
A first passage 122 as an air discharge passage communicating with
The inside of the cartridge tank 101 and the outer pipe body 116
And a second passage 123, which serves as an oil injection passage, is formed. At this time, the upper end of the communication pipe 106b provided in the first stopper 106 extends to a position close to the upper wall in the cartridge tank 101 and opens.

When the switch is turned on in this state, refueling is started by the pump 113, and the oil is supplied to the outer pipe body 116,
It is injected into the cartridge tank 101 through the openings 116a and 105a. On the other hand, cartridge tank 1
The air in 01 enters the inner pipe 117 from the upper end opening of the communication pipe 106b through the communication hole 108a of the second plug 108 and the opening 117a of the inner pipe 117, and enters the oil tank 110 from there. Is discharged. When the oil fills the cartridge tank 101, the oil is discharged from the inner pipe body 117, and when the sensor 118 detects this, the switch is turned off.

[0008]

The conventional petroleum injecting apparatus constructed as described above has the following problems. (1) If the oil tank 110 is turned over when the cartridge tank 101 is not installed, the opening 116
Oil leaks from a, 117a. (2) When the cartridge tank 101 is mounted in a state where the oil remains in the cartridge tank 101, the oil flows backward and wets the sensor, so that the engine cannot be started. (3) If the cartridge tank 101 is not completely installed, oil will flow out of the oil tank 110.

The present invention has been made in order to solve the above problems, and overcomes various problems, enhances the degree of perfection and reliability as a product, and can provide a consumer with a lubricating oil. The purpose is to obtain the device.

[0010]

The lubrication device according to the present invention is configured as follows. (1) The inside of the housing forming the oil injection connection is divided into an upper chamber and a lower chamber by a partition wall, a sliding rod is provided in the upper chamber, and a slider is provided in the lower chamber. By the valve action of the motive element and the lip portion provided on the partition wall, the communication between the oil injection connection portion and the outside is blocked in each of the upper chamber and the lower chamber.

(2) In the lubricating device of (1) above,
A first plug body, in which a seal member is attached to the outer periphery of an opening provided at the tip end, is slidably installed, and is urged to constantly close the opening of a cap attached to an oil inlet, and A sliding rod having a seal member attached to the tip portion thereof, which is provided in the cartridge tank with a second stopper body which is always urged to close the opening portion of the first stopper body, and which has a seal member at the tip portion, A cap receiving seal member provided on the outer periphery of the sliding rod, a partition wall having a slider and a lip portion is provided at the oil injection connection portion, and the valve action timing by each of these members is at least the cap and the cap when the cartridge tank is mounted. The receiving seal member is first closed, and the cap and the cap receiving seal member are opened last when the cartridge tank is removed.

(3) In the lubricating device of (1) above,
A spring receiver having a communication pipe for communicating the upper chamber and the lower chamber, a spring receiver for constantly urging the sliding rod upward, and a spring receiver having a guide portion for guiding the sliding rod, and the upper end of the sliding rod. A bellows fixed to the slider, a lip portion that abuts the slider, a flange portion that seals between the spring receiver and the lower housing case, and a holding portion that seals the communication pipe at the through portion of the communication pipe. It has a partition wall made of a soft material, and is divided into an upper chamber and a lower chamber by a spring receiver and a partition wall.

(4) In the lubricating device of (1) above,
A slider that cooperates with the sliding rod is provided directly below the sliding rod that slides up and down when the cartridge tank is attached and detached, and a lip-shaped valve that separates from and slides on the partition by the vertical movement of the sliding rod. Is provided. (5) In the lubricating device of (1) above, the lower end of the communication pipe that connects the upper chamber and the lower chamber is located below the lip of the partition wall. (6) In the lubricating device of (1) above, the liquid detection sensor is arranged in the lower chamber, and the lower end of the communication pipe communicating with the return pipe is located below the detection portion of the liquid detection sensor. .

(7) In the lubricating device of (1) above,
A liquid detection sensor is installed in a lower chamber, and the periphery of the liquid detection sensor is surrounded by a cylindrical portion having an upper communication hole and a lower communication hole. (8) In the lubricating device of (1) above, a liquid detection sensor is installed in the lower chamber, and the detection portion of the liquid detection sensor is covered with a slider.

[0015]

[Action]

(1) Even if the oil tank is tumbled when the cartridge tank is not installed, the valve action of the sliding rod, the O-ring, the lip of the partition wall and the slider provided in the oil injection connection
Oil is prevented from leaking out of the equipment. (2) When the cartridge tank is attached or detached, the cap and the seal receiving portion of the cap receiving seal come into contact first and are separated from each other at the end.

(3) The housing is divided into an upper chamber and a lower chamber by a partition wall and a spring receiver, and the chamber is divided into only two parts to simplify the assembly. (4) The lip portion provided on the partition wall not only prevents the outflow of oil when the cartridge tank falls, but also functions as a pressure relief valve. That is, a rise in pressure in the oil tank due to a rise in temperature causes the lip portion to open.

(5) With the communication pipe facing the lower chamber,
Separate into air layer and liquid layer. Then, even if the air from the return pipe flows backward due to the pressure increase in the oil tank, only the air is exhausted from the lip portion and the oil is prevented from being blown out from the through hole of the sliding rod. (6) A communication pipe that faces the lower chamber is extended below the detection portion of the liquid detection sensor, and the detection portion is normally an air layer. Then, at the time of oil filling for discharging the air in the cartridge tank, the air pressure pushes the oil in the lower chamber above the lower end of the communication pipe.

(7) Since the liquid detection sensor is surrounded by the cylindrical portion, the liquid level in the cylindrical portion is raised faster than the liquid level in the lower chamber as a whole. That is, the oil that has returned from the pipe in the cartridge tank promptly fills the inside of the cylindrical portion and wets the detection portion of the liquid detection sensor. (8) By covering the detection part of the liquid detection sensor with the slider, the detection part is not wet with the liquid droplets. That is, the liquid droplets dripping from above the detection unit are covered, and only the wetting due to the rise of the liquid surface is detected.

[0019]

1 is a vertical cross-sectional view showing the overall construction of an embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view showing the essential parts of the cartridge tank of FIG. Further, FIG. 3 is a vertical cross-sectional view (prior to the insertion of the cartridge tank) of the essential portion of the oil injection connection portion of FIG. 2, and FIG. 4 shows the essential portion of the oil injection connection portion after the insertion of the cartridge tank. FIG. Furthermore, FIG.
1 is a vertical cross-sectional view showing the main part of the lower part of the pump of FIG. 1, and FIG.
6 is a vertical cross-sectional view showing the main part of the pump upper part, FIG. 7 is a vertical cross-sectional view showing the state where a plug is attached to the pump upper part of FIG. 6, and FIG. 8 is a vertical cross-sectional view showing the overall structure of the oiling device before the cartridge tank is mounted. Is.

First, in FIGS. 1 and 2, reference numeral 1 is a cartridge tank for an oil stove or the like, and a handle (not shown) for transportation is attached to an upper wall 1a thereof. Reference numeral 2 denotes a petroleum inlet formed on the lower wall of the cartridge tank 1 so as to project downward, 3 is a cap for covering the petroleum inlet 2, and 10 is a packing interposed between the petroleum inlet 2 and the cap 3. is there. In addition, 4 is an oil tank, 35 is a pump part which is equipped with a drive motor and is detachably arranged in the oil tank 4. Reference numeral 11 denotes a tubular guide cylinder whose lower end is fixed to the opening 3a of the cap 3 and extends vertically into the cartridge tank 1. The peripheral wall near the lower end is provided with a plurality of openings 11a, and the upper end is formed. A spring receiver 13 is provided in the section.

Reference numeral 12 denotes a first plug body made of a substantially cylindrical member, which is disposed in the guide cylinder 11 so as to be slidable in the axial direction, and an O-ring 14 is attached to the lower portion thereof. 15
Is provided with a holding portion 15a so as to face substantially the central portion.
It is a valve bearing having a substantially H-shaped cross section that is press-fitted and fixed to the upper part of the plug body 15, and a pipe body 16 is press-fitted and fixed to the upper part. The pipe body 16 extends near the upper wall 1a of the cartridge tank 1, and the height of the pipe body 16 becomes the full oil level at the time of lubrication. Reference numeral 17 denotes a first spring which is interposed between the spring receiver 13 and the valve receiver 15. The first spring 17 always urges the valve receiver 15, and thus the first plug body 12, in a direction to close the opening 3a of the cap 3. ing.

Reference numeral 18 is a second stopper having a substantially inverted T-shape slidably disposed between the holding portions 15a of the valve receiver 15. A communication hole 18a is provided at the tip of the second stopper and the outer periphery is provided. A seal member 19 is mounted on the valve, and a second spring 20 interposed between the seal member 19 and the valve receiver 15 constantly urges the seal member 19 in a direction in which the seal member 19 is pressed.

Reference numeral 30 denotes a housing portion for accommodating each device according to the present embodiment, which is fixed to a boat-shaped base 31 having a waist height L ₁ and a bottom portion 31a inclined with respect to the ground line G, and the base 31. It is composed of an upper case 32 attached and an oil tank cover 33 detachably attached to the base 31. Reference numeral 34 is an oil injection connection portion, which accommodates a lock mechanism that operates when the cartridge tank 1 is set in the apparatus, a valve mechanism that opens and closes by attaching and detaching the cartridge tank 1, and the like. Reference numeral 35 is a pump portion, and 36 is a connecting pipe that connects the oil injection connection portion 34 and the pump portion 35. Reference numeral 37 denotes an operation unit for driving this apparatus, which is equipped with an operation switch, an automatic stop timer, a setting knob, a display lamp and the like. Reference numeral 38 denotes a control board on which control elements are mounted, which controls automatic stop by liquid detection and a stop timer. Reference numeral 39 is a driving dry battery.

Next, the construction of the oil injection connecting portion 34 is shown in FIG.
This will be described in detail with reference to FIG. Reference numeral 40 denotes a housing for assembling the constituent parts of the oil injection connection portion 34, which has a cylindrical guide portion 40a protruding upward in a substantially central portion thereof.
The upper part is fixed to the upper case 32. Reference numeral 41 denotes a partition wall having a bellows 41a and a holding portion 41b of a communication pipe 50 described later, which divides the interior of the housing 40 into an upper chamber 40b and a lower chamber 40c, which is made of a soft material such as rubber and has an upper end of the bellows 41a. The portion is closely fixed to a sliding rod 51, which will be described later, and a lip portion 41c is formed on the lower portion of the bellows 41a. 42 is a lower chamber 4 partitioned by a partition wall 41
0c is a bottomed double-cylindrical housing lower case for forming a closed chamber, which is made of a transparent member and has a partition wall 41 at the outer cylindrical portion.
The outer periphery of the flange portion 41d is compressed and sealed. And
The housing lower case 42 is fixed to the housing 40 by locking a claw 42a provided on the outer periphery of the housing lower case 42 in a lateral hole 40d provided in the housing 40.

Reference numeral 43 is a first liquid detection sensor for detecting petroleum, and the lip portion 4 of the partition wall 41 in the lower chamber 40c.
It is provided below 1c and emits a signal to stop the device when oil comes to the detection unit 42b. Then, the signal is received by the control board 38 incorporating the control circuit, and the apparatus is stopped. In this embodiment, the signal is ignored for several seconds only when the device is started. Further, the setting of the ignored time can be changed by the operation unit 37.

Reference numeral 44 denotes a second liquid detection sensor provided in the housing 40. In this case, the liquid detection sensor 44 is immediately stopped when the liquid detection sensor 44 gets wet. Incidentally, 45 and 46 are rubber bushes which prevent the liquid from entering the sensor portion.
Reference numeral 47 denotes a cylindrical slider that covers the detection portion 42b of the first liquid detection sensor 43, and slides inside the inner cylindrical portion 48 that protrudes from the bottom of the housing lower case 42, and is always connected to the housing lower case 42. It is urged upward by a first spring 49 interposed between the two. The head 47a of the slider 47 forms a lip portion 41c of the partition wall 41 and a valve portion that is released by the action of a slide rod 51, which will be described later, when the cartridge tank is attached and which comes into contact when the cartridge tank is removed. The notch 47b is provided in the. The upper part 48a of the inner cylindrical part 48 has a lip part 41c of the partition wall 41.
It abuts the base portion of the partition wall to prevent the partition wall 41 from hanging down. Reference numerals 48b and 48c are an upper communication hole and a lower communication hole that allow the inside of the inner cylindrical portion 48 to communicate with the outside thereof.

Reference numeral 50 is a spring receiver having a substantially convex cross section,
There is a communication pipe 50c which is held by the cylindrical guide portion 50a, the partition wall pressing portion 50b and the holding portion 41b of the partition wall 41 and which communicates between the upper chamber 40b and the lower chamber 40c, and the lower portion of this communication pipe 50c detects liquid. Detection unit 42b of the sensor 43
Of the return pipe 60 is provided at the upper part. Reference numeral 61 denotes an oil feed pipe, which is press-fitted and fixed by a mounting member 62 to a protruding pipe 40f which is provided to project laterally from the upper chamber 40b of the housing 40.

Reference numeral 51 denotes a slide rod which has a through hole 51b in the axial direction and is slidably held by the guide portion 40a of the housing 40 and the guide portion 50a of the spring receiver 50.
The second spring 52 is interposed between the spring 1 and the spring receiver 50, and is constantly urged upward. An upper O-ring 53 is provided on the outer periphery of the upper portion of the sliding rod 51 so as to contact and seal the first stopper 12 of the cartridge tank 1 when the cartridge tank 1 is set. O is in charge of a valve mechanism that is normally closed and opens when the cartridge tank 1 is set.
A ring 54 is provided. Further, the bellows 41a described above is tightly fixed to the lower portion, a cutout portion 51a is provided at the lower end portion, and the lip portion 4 of the partition wall 41 is always provided.
It contacts the head of the slider 7 between 1c. 51
Reference characters c and 51d are ribs provided on the outer circumference to prevent swinging when sliding and to position the second spring 52.

Reference numeral 55 denotes a cylindrical cap receiving seal which has a bellows-shaped body and is capable of expanding and contracting in the vertical direction. The cap receiving seal 55 is made of a soft material such as rubber and is arranged on the outer periphery of the guide portion 40a of the housing 40, and The opening abuts on the cap 3 of the cartridge tank 1 for sealing, and the lower part abuts on the inner wall 40e of the housing 40 for sealing. 56 is provided on the outer periphery of the cap receiving seal 55, and the locking portion 56 is provided.
c is a substantially hollow cylindrical receiving member that is locked to the cap receiving seal 55 and receives the cap 3 of the cartridge tank 1 at the time of oil filling. ), When the cartridge tank 1 is set, the cap 3 is displaced inward so that the cap 3 is gripped (FIG. 4), and the locking portion 56 that is locked to the housing 40 and has a function of preventing the receiving tool 56 from slipping upward.
b. Reference numeral 57 is a third spring which is interposed between the cap receiving seal 55 and the receiving member 56 and always biases the receiving member 56 upward. Reference numeral 58 designates a cap receiving seal 55 made of a soft material and a third spring 57 directly attached thereto.
It is a backing plate to prevent scratches by pressing with. A limit switch 59 determines whether or not the cartridge tank 1 is set, that is, whether or not the receiving member 56 is pushed downward, and is operated by lowering the locking portion 56b.

Next, the structure of the pump section 35 will be described with reference to FIGS.
This will be described in detail with reference to FIGS. Reference numeral 70 denotes a motor that uses a dry battery as a power source, and is press-fitted and fixed near a lowermost end of a thin-walled pipe-shaped oil feed pipe 71 via a rib 71a protruding from an inner wall of the oil feed pipe 71. Further, the upper portion 71b of the oil feed pipe 71 is the first
Is fixed by being fitted into a joint (described later) of the oil tank, and the intermediate portion has a bellows shape that is expandable and contractible to absorb the dimensional variation of the oil tank 4 in the height direction, and the lower end portion of the oil feed pipe 71 is always the bottom portion of the oil tank 4. It hits 4c. 72
Is an impeller attached to the output shaft of the motor 70 to rotate,
Reference numeral 73 denotes a pump casing having a suction port 73a, which is fitted and fixed to the oil feed pipe 71. Incidentally, 74 is a motor 70
Is a lead wire for supplying electric power to.

Reference numeral 75 denotes a first joint, which is an oil supply pipe 7
First flow path 75a communicating with the first flow path 75a
a has a second flow path 75b that is in a shielded state. 7
A conduction pin 6 is connected to the lead wire 74. 77
Is a pin retainer, 78 is a gasket, 79 is an oil tank 4.
It is a first plug that is screwed into the mouth 4a of the pump, and the pump 35 is attached to the oil tank 4 by this screwing.

Reference numeral 80 is a second joint, 81 is a rubber packing which controls the seal when the first joint 75 and the second joint 80 are joined, and the first joint 75
Is attached to. Further, the second joint 80 is formed with two independent first flow passages 80a and second flow passages 80b, and the oil feed pipe 61 and the return pipe 60 are respectively formed.
It is connected to the. A contact plate 82 is fixed to the second joint 80, and is electrically connected to the conduction pin 76 by connecting the first joint 75 and the second joint 80. 83 is a lead wire, 84 is a lead wire cover,
Reference numeral 85 is a second plug that is screwed onto the upper portion of the first joint 75, and fixes the second joint 80 to the first joint 75. As shown in FIG. 7, the upper opening of the first joint 75 is closed by a third plug 86 to which a separately prepared rubber packing 87 is attached.

Next, the operation of this embodiment constructed as described above will be described. Before using the oiling device, oil must first be injected into the oil tank 4. For this reason,
From the state shown in FIG. 8, the oil tank cover 33 is removed, the second plug 85 is removed, and instead, the third plug 86 with packing is attached as shown in FIG. 7, and the oil tank 4 is taken out from the base 31. . Then, from the inlet 4b different from the oil inlet 4a into which the pump portion 35 is inserted and fixed, the fourth plug 88 with the packing 89 attached is removed, and the oil is injected and replenished in the opened state. Of course, oil tank cover 3
Even with the state 3 removed, the oil can be injected in this state by removing the fourth stopper 88 and opening the inlet 4b.

Next, the replenishment is completed and the oil tank 4 equipped with the fourth stopper 88 is set in the base 31, the third stopper 86 is removed, and the second stopper 85 is used to connect the connecting pipe 36 and the pump portion. 35 is connected. At this time, the oil tank 4 is placed on the base 31 whose bottom is inclined so that the side on which the pump portion 35 is inserted is lower than the ground line G.
Then, the oil tank cover 33 is put on. Next, the upper lid 91 that opens and closes with the hinge 90 as a fulcrum is opened, the empty cartridge tank 1 is inserted and set with the oil inlet facing downward as shown in FIG. 1, and the switch is pressed to start the impeller 72.

By setting the cartridge tank 1 in this way, as shown in FIG.
No. 2 O-ring 14 seal part, second plug 18 seal member 19 seal part, slider 47 and lip part 4
The seal portion formed by 1b is opened, and the seal portion formed by the upper O-ring 53 of the sliding rod 51 and the first plug body 12, and the cap opening portion 3a and the cap receiving seal 55 are pressed and sealed. At this time, the cap opening 3a and the cap receiving seal 55 are first brought into pressure contact with each other.

When the impeller 72 rotates and the liquid is pushed up by the centrifugal force, the oil is sent to the upper chamber 40b via the oil feed pipe 71, the first flow paths 75a and 81a, and the oil feed pipe 61. . From here, it further reaches the cap opening 3a through the gap around the sliding rod 51 and is injected into the cartridge tank 1. This injection proceeds at the same time as the air in the cartridge tank 1 is discharged. That is, the air is discharged from the uppermost portion of the pipe body 16,
6, around the second plug 18, through hole 51 of the sliding rod 51
b, lower chamber 40c, communication pipe 50c, return pipe 6
0, and is discharged into the oil tank 4 via the second flow paths 81b and 75b.

The lubrication operation is performed in this manner, and there are the following three cases for the end of this operation. First
In the case (2), the cartridge tank 1 is stopped at an arbitrary amount before the tank is full, and at this time, the power switch is turned off. In the second case,
It is stopped after the tank is full, and in this case, it is done automatically. The third case is an oil tank 4
This is a case where the oil inside is emptied during filling, but in this case, it changes to full tank automatic stop, and it is stopped by a control that is stopped by a timer that counts time by a microcomputer. Further, the time can be changed by the operation unit.

Here, the case of full automatic stop in the second case will be described. When the liquid level in the cartridge tank 1 rises and reaches the uppermost portion of the pipe body 16 by the oil injection operation, oil, which is a liquid, enters the pipe body 16 instead of discharging air until now, and the oil is Through hole 5 of sliding bar 51
Cylindrical part 48 inside from cutout part 51a through 1b
Flows in. Then, this oil flows in from the cutout portion 47b of the slider 47 and fills the detection portion 42b in a few seconds. The oil that has flowed in from the inner cylindrical portion 48 is in the lower communication hole 4
Although it flows out from 8c, the size of the lower communication hole 48c is set so that the amount thereof is extremely smaller than the inflow amount. Oil coming out from the lower communication hole 48c is connected to the communication pipe 50.
It is discharged from c to the return pipe 60. Upper communication hole 48b
Is an escape hole when the height of the liquid column further rises. In this way, when the oil reaches the detection unit 42b, the liquid detection sensor 43 issues a signal to stop the operation, and the lubrication is stopped.

Next, the behavior in each flow path due to this stop will be described. First, for the oil in the cartridge tank 1, the first joint 75 has a small hole 75c communicating with the oil tank 4, and the closed communication with the lower end of the oil feed pipe 71 is cut off at this portion, and the siphon is used. This small hole 75c contributes to the exchange of air and oil as well as blocking the reverse flow to the pump section, so that the oil in the oil supply pipe 61 allows the oil above the oil level height position in the oil supply pipe to be stopped. , And returns to the oil tank 4. Therefore, the oil supply pipe 6
The rise in 1 is referred to as the oil surface height in the oil supply pipe at the time of stop, and the height is set to the highest oil surface height in the cartridge, that is, slightly higher than the upper end of the pipe body 16 (L ₂ ). Oil spill in the tank 1 is avoided.
The small hole 75c may be provided in the upper part of the oil feed pipe.

On the other hand, the oil filling the inner cylindrical portion 48 continues to flow out from the lower communication hole 48c when the operation is stopped, so that the oil level descends and the detecting portion 42b is released from the wet state to the next position. Prepare for acceptance of starting. Furthermore, the liquid detection sensor 43 is controlled not to operate for at least several seconds after detecting the presence of oil, and when oil remains in the cartridge tank 1 or the through hole 51b of the sliding rod 51, This prevents misidentification when oil falls into the inner cylindrical portion 48 during use and wets the detection portion 42b. That is, the oil droplets that cause the wetting of the detecting portion 42b are removed from the detecting portion 42b at the same time as they are sent to the lower chamber 40b together with air during the operation for several seconds.

Further, the oil supply device in this embodiment includes
The liquid detection sensor 44 is arranged in the vicinity of the bottom 31a of the base 31. This is for detecting leaks from the seals and pipes and stopping the apparatus. That is, if the above-mentioned leakage occurs, the base 3
The oil is collected in 1 and a stop signal is issued when the liquid level reaches the sensor 44, and the apparatus is automatically stopped. However, in spite of this stoppage, there is a possibility that the leakage continues, or in the worst case, the cartridge tank 1 may leak completely. However, the leakage between the cap 3 and the cap receiving seal 55 may occur. To cope with this, the waist height L ₁ of the base 31 shown in FIG. 1 is set as a height that can accommodate the entire amount of oil even if the oil in the cartridge tank 1 leaks.

[0042]

As is apparent from the above description, according to the present invention, the following effects can be obtained. (1) The inside of the housing is divided into an upper chamber and a lower chamber by a partition wall, and a sliding rod, an O-ring, a lip portion of the partition wall and a valve action by a slider provide a petroleum injection connection portion in each of the upper chamber and the lower chamber. Since the communication with the outside is cut off, it is possible to prevent the oil from flowing out of the device even if the device rolls over.

(2) The opening and closing timing of the valve action of each part opened and closed by attaching and detaching the cartridge tank is set so that the cap and the cap receiving seal portion are closed first when the cartridge tank is attached, and finally when the cartridge tank is removed. Because I try to open that part,
When the cartridge tank is attached / detached, the oil in the cartridge tank does not flow out to the outside, and the dirt due to the oil can be prevented.

(3) A spring receiver having a communication pipe for communicating the upper chamber and the lower chamber, a spring receiving portion for constantly biasing the sliding rod upward, and a spring receiving portion for guiding the sliding rod. It has a bellows whose upper end is fixed to the sliding rod, a lip part that abuts the slider, and a flange part that seals between the spring receiver and the housing lower case, and further seals the communication pipe at the penetration part of the communication pipe. Since it has a partition made of a soft material that has the function of dividing the chamber into an upper chamber and a lower chamber by means of a spring receiver and a partition, it is easy to assemble, the cost is low, and high reliability can be maintained. it can.

(4) A slider cooperating therewith is provided immediately below the sliding rod that moves up and down when the cartridge tank is attached and detached, and the partition wall portion that separates from the slider is a lip-shaped valve. Therefore, the rise in pressure in the oil tank due to the rise in temperature and the like causes the opening of the lip portion and can be alleviated.

(5) The interior of the housing is divided into an upper chamber and a lower chamber, and a communication pipe communicating with the return pipe is made to face below the lip portion of the partition wall in the space of the lower chamber into which return air mainly flows. By discharging indoor air or oil to the outside, it is possible to always have an air layer above the tip of the communication pipe. Even if it flows backward, only air is exhausted from the lip,
To prevent oil from blowing out of the through hole of the sliding rod,
It is possible to prevent oil stains.

(6) Since the lower end of the communication pipe facing the lower chamber in which the liquid detection sensor is installed extends below the liquid detection sensor, when the air in the cartridge tank is discharged, the oil is discharged. It is possible to push out the oil in the lower chamber above the lower end of the communication pipe by the air pressure, and to create the presence or absence of liquid, which is the sensing condition of the liquid detection unit.

(7) Since the liquid detection sensor provided in the lower chamber is surrounded by the cylindrical portion having the upper communication hole and the lower communication hole, the oil returned from the pipe body in the cartridge tank is immediately stored in the cylindrical portion. The liquid detector can be wetted by burying it, and the presence of oil can be detected as soon as possible. After stopping the equipment, the oil is gradually discharged from the lower communication hole to release the wet state of the sensor unit.

(8) Since the liquid detection sensor is provided in the lower chamber of the housing, and the detection portion is covered with the slider to cover the liquid droplets dripping from above the detection portion, only the wetting due to the rise of the liquid surface is achieved. Can be detected. Therefore, it is possible to make the device free from erroneous detection.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an overall configuration of an oil injection device according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a main part of a cartridge tank according to an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing a petroleum injection connection portion according to the embodiment of the present invention.

FIG. 4 is an explanatory view of the operation of the petroleum injection connection portion according to the embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view showing the lower portion of the pump unit according to the embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view showing the upper portion of the pump unit according to the embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view when a plug is attached to the upper portion of the pump unit according to the embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view of the oil injection device before the cartridge tank is attached to the oil tank of the embodiment of the present invention.

FIG. 9 is a cross-sectional view showing an example of a cartridge tank in a conventional oiling device.

FIG. 10 is a cross-sectional view showing an example of an oil tank in a conventional oil injection device.

FIG. 11 is an operation explanatory view of the conventional oil injection device.

[Explanation of reference numerals] 1 cartridge tank, 2 oil inlet, 3 cap, 4 oil tank, 12 first stopper, 18 second stopper, 34 oil inlet connection, 40 housing, 40
b upper chamber, 40c lower chamber, 41 partition wall, 41c lip portion, 43 liquid detection sensor, 47 slider, 48
Cylindrical part, 48b upper communication hole, 48c lower communication hole, 50
Spring receiver, 51 sliding rod, 55 cap receiver seal, 60 return pipe.

(72) Inventor Toshikazu Terauchi 800 Iwamatsu, Oshima-machi, Nitta-gun, Gunma Gunma Branch, Mitsubishi Electric Engineering Co., Ltd. (72) Akihiko Kasahara Iwamatsu, Oshima-machi, Nitta-gun, Gunma 800 Mitsubishi Electric Engineering Co., Ltd.Kamakura Plant Gunma Branch (72) Inventor Tadaaki Yanagi Iwamatsu, Oshima-cho, Nitta-gun, Gunma 800 Mitsubishi Electric Engineering Co., Ltd. Kamakura Plant Gunma Branch (56) References Special Kaihei 1-169230 (JP, A) JP-A-1-15920 (JP, A) Actual Kaihei 1-94741 (JP, U) Actual Kaihei 1-101050 (JP, U) (58) Fields investigated ( Int.Cl. ⁷ , DB name) F24C 5/00-5/18 F23K 5/00-5/14

Claims (8)

(57) [Claims] 1. An oil tank and oil in the oil tank
Oil that communicates with the pumping section and the oil tank
A cap is provided on the injection connector and the oil injection port.
Sealed cartridge tongue that is separably connected to the input connector
The cartridge tank cap and the
Said oil tank and cart by connection with oil injection connection
The forward flow path and the return flow path are formed between the ridge tanks.
Transport the oil in the oil tank to the cartridge tank
In the oiling device configured as described above , the inside of the housing forming the oil injection connection is divided into an upper chamber and a lower chamber by a partition wall, a sliding rod is provided in the upper chamber, and a slider is provided in the lower chamber. The sliding bar, the slider and the lip portion provided on the partition wall block the communication between the petroleum injection connection and the outside in each of the upper chamber and the lower chamber. Characteristic oiling device. 2. A first seal member is slidably mounted on the outer periphery of the opening provided at the tip end and is biased so as to always close the opening of the cap fitted to the oil inlet. And a second seal member attached to the tip end of the first stopper member and urged to constantly close the opening of the first stopper member.
The stopper is provided in the cartridge tank, and the sliding rod having the seal member at the tip, the cap receiving seal member provided on the outer periphery of the sliding rod, and the partition wall having the slider and the lip are connected to the oil injection connecting portion. When the cartridge tank is mounted, at least the cap and the cap receiving seal member are closed first, and when the cartridge tank is removed, the cap and the cap receiving seal member are the last. The oiling device according to claim 1, wherein the oiling device is opened to the inside. 3. A spring receiving portion which has a communication pipe for communicating the upper chamber and the lower chamber and constantly biases the sliding rod upward.
And a spring receiver having a guide portion for guiding the sliding rod, a bellows having an upper end fixed to the sliding rod, a lip portion abutting the slider, and a seal between the spring receiver and the housing lower case. And a partition wall made of a soft material having a holding portion that seals the communication pipe at a penetrating portion of the communication pipe, and the upper chamber and the lower chamber are defined by the spring receiver and the partition wall. The oiling device according to claim 1, wherein the oiling device is divided. 4. A slider is provided immediately below a sliding rod that slides up and down when the cartridge tank is attached and detached, and a slider is provided on a partition wall by moving the sliding rod up and down. 2. A lip-shaped valve portion for attaching and detaching is provided.
Lubrication device described. 5. The oiling device according to claim 1, wherein a lower end portion of a communication pipe that communicates the upper chamber and the lower chamber is located below a lip portion of the partition wall. 6. A liquid detection sensor is provided in the lower chamber,
The lubricating device according to claim 1, wherein a lower end portion of the communication pipe communicating with the return pipe is located below a detection portion of the liquid detection sensor. 7. A liquid detection sensor is installed in the lower chamber,
The liquid detection sensor is surrounded by a cylindrical portion having an upper communication hole and a lower communication hole.
Lubrication device described. 8. A liquid detection sensor is installed in the lower chamber,
The lubrication device according to claim 1, wherein the detection portion of the liquid detection sensor is covered with a slider.