Lubricating grease discharging device and lubricating grease injection system

Abstract

The invention provides a grease discharge device which can ensure a large grease storage amount, has good processing performance, and is not easily restricted by a working part. A grease discharge device (1) is provided with: a ground-contact tank (2) capable of storing grease, the upper surface of which is open; a lid (3) that closes the upper surface of the can (2); a pump unit (4) which is connected to the cover (3), sucks the grease in the tank (2) by being driven by the motor (10), and discharges the grease to the outside; and a removable battery pack (5) that drives the pump unit (4).

Description

Technical Field

[0001] The present disclosure relates to a grease discharge device for discharging grease stored in a tank and a grease oiling system using the grease discharge device. Background Art

[0002] In heavy machinery such as construction machinery and cranes, a plurality of oiling locations (pipe joints) are provided for maintenance, and grease is supplied to each oiling location in order to properly maintain the lubrication state. As a grease supply device, a grease discharge device disclosed in Patent Document 1 is known. The grease discharge device has a motor driven by a battery and a pump driven by the motor in the main body of a holding tank. A cartridge filled with grease can be accommodated in the tank, and when the motor is driven and the pump is operated, the grease in the cartridge is discharged from a discharge port.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2022-158462

[0004] The grease discharge device described in Patent Document 1 has a battery and can be carried by an operator using a shoulder strap attached to the main body. Therefore, the amount of grease filled in the cartridge is kept relatively small (eg, 400 to 500 g) in consideration of the operator's burden.

[0005] However, since heavy machinery has many oiling locations, one cartridge may run out of grease and require multiple cartridge replacements. For example, each container crane has about 100 oiling locations, and 15 to 20 cartridges are used for replacement. Summary of the invention

[0006] Therefore, an object of the present disclosure is to provide a grease discharge device and a grease injection system that can ensure a large grease storage amount, and by using a battery, the handling performance is improved and the operation site is not easily restricted.

[0007] In order to achieve the above-mentioned object, the first structure of the present disclosure is a grease discharge device, which may also include:

[0008] A ground contact type tank having an open upper surface and capable of storing grease; and a cover closing the upper surface of the tank.

[0009] In addition, the first structure may include: a pump unit connected to the cover, which is driven by a motor to suck the grease in the tank and discharge it to the outside; and a detachable battery that drives the pump unit.

[0010] In order to achieve the above-mentioned object, the second structure of the present disclosure is a grease discharge device, which may also include:

[0011] A floor-contact type tank, the upper surface of which is open and capable of storing grease, and having a capacity of 10 liters or more; and a pump unit that sucks the grease in the tank and discharges it to the outside by driving a motor.

[0012] In addition, the second structure may include a detachable battery for driving the pump unit.

[0013] In order to achieve the above-mentioned object, the third structure of the present disclosure is a grease injection system, which may also include:

[0014] The first grease discharge device includes a first tank capable of storing grease of 1 liter or less, and includes a first pump driven by a first motor to discharge the grease in the first tank.

[0015] The second grease discharge device includes a second tank capable of storing grease of 10 liters or more, and includes a second pump driven by a second motor to discharge the grease in the second tank.

[0016] In addition, the third structure may also include a battery capable of supplying power to the first motor and the second motor.

[0017] Effects of the Invention

[0018] According to the present disclosure, a large amount of grease storage can be ensured. In addition, since the motor that operates the pump is driven by a battery, a power cord and an air hose are not required, the handling property becomes good, and it is not easily restricted by the working position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional view of the grease discharge device of Example 1.

[0020] Figure 2 is an explanatory diagram of the grease discharge device of Example 1, Figure 2 (A) indicates the side, Figure 2 (B) represents the top view, Figure 2 (C) indicates positive, Figure 2 (D) indicates the back side.

[0021] Figure 3 yes Figure 2 An enlarged cross-sectional view of line AA in (C).

[0022] Figure 4 This is a perspective view of the grease discharge device with the number of battery packs changed.

[0023] Figure 5 yes Figure 4 Illustration of the grease discharge device, Figure 5 (A) indicates the side, Figure 5 (B) represents the top view, Figure 5 (C) indicates positive, Figure 5 (D) indicates the back side.

[0024] Figure 6 yes Figure 5 Enlarged cross-sectional view of line BB in (C).

[0025] Figure 7 This is a perspective view of the grease discharge device with a modified pump unit.

[0026] Figure 8 yes Figure 7 Illustration of the grease discharge device, Figure 8 (A) indicates the side, Figure 8 (B) represents the top view, Figure 8 (C) indicates positive, Figure 8 (D) indicates the back side.

[0027] Fig. 9 yes Figure 8 (C) is an enlarged cross-sectional view of the CC line.

[0028] Fig.10 It is a stereoscopic view of the grease discharge device of Example 2.

[0029] Fig.11 is an illustration of the grease discharge device of Example 2, Fig.11 (A) indicates the side, Fig.11 (B) shows a cross-sectional view taken along line DD.

[0030] Fig.12 This is an illustration of a grease discharge device equipped with an electric heater. Fig.12 (A) indicates the side, Fig.12 (B) represents a cross-sectional view taken along line EE.

[0031] Fig.13 This is a perspective view of a grease discharge device provided with an electric heater, in which a tank and a housing are omitted, as viewed from the rear.

[0032] Fig.14 This is an illustration of a grease discharge device with a changed number of cartridges. Fig.14 (A) indicates the side, Fig.14 (B) shows a cross-sectional view taken along line FF.

[0033] Fig.15 This is a perspective view of a grease discharge device that does not use a cartridge.

[0034] Fig.16 yes Fig.15 Illustration of the grease discharge device, Fig.16 (A) indicates the side, Fig.16 (B) is a cross-sectional view taken along line GG.

[0035] Fig.17 This is an illustration of the grease discharge device with the number of battery packs changed. Fig.17 (A) indicates the side, Fig.17 (B) shows a cross-sectional view taken along line HH.

[0036] Fig.18 It is a schematic diagram showing a modified example of the layout of the pump unit and the battery pack.

[0037] Fig.19 It is a schematic diagram showing a modified example of the layout of the pump unit and the battery pack.

[0038] Fig. 20 This is a diagram to explain the grease injection system.

[0039] Description of Reference Numerals

[0040] 1. 1A to 1F grease discharge device; 2. 50a, 50b tank; 3 cover; 4. 4A to 4C pump unit; 5 battery pack; 6 loading part; 10 motor; 11. 42 pump part; 12 suction pipe; 13 discharge pipe; 14 controller; 15. 51 housing; 16 display part; 21A, 21B connector; 22 switch trigger; 23, 24 switch; 25 trigger; 26, 65 battery base; 27, 66 opening and closing cover; 29 battery connector; 30 frame; 31 tire; 32 handle; 50 cartridge accommodating tank; 52 cartridge; 70 shoulder strap; 72 belt; 79 shoulder strap; G grease; S grease oiling system. DETAILED DESCRIPTION

[0041] In one embodiment of the present disclosure, the battery may also be disposed on the upper surface of the cover.

[0042] According to this structure, the battery can be arranged so as not to protrude outside the tank, and the battery will not hinder the operation.

[0043] In one embodiment of the present disclosure, a plurality of batteries may be provided.

[0044] According to this configuration, the device can be used continuously for a long period of time, and interruption of work due to replacement of batteries and the like can be reduced.

[0045] In one embodiment of the present disclosure, the tank may also have a moving mechanism.

[0046] According to this structure, the tank can be easily moved.

[0047] In one embodiment of the present disclosure, the moving mechanism may include tires.

[0048] According to this structure, the tank can be easily moved and the moving direction can be easily changed.

[0049] In one embodiment of the present disclosure, the moving mechanism may also have a handle.

[0050] According to this structure, the operation of the moving mechanism can be easily performed.

[0051] In one embodiment of the present disclosure, the handle may also be height-adjustable.

[0052] According to this structure, the operator can easily operate the moving mechanism.

[0053] In one embodiment of the present disclosure, the moving mechanism may be a plurality of casters provided on the bottom surface of the tank.

[0054] According to this structure, the moving mechanism can be formed compactly.

[0055] In one embodiment of the present disclosure, it may also be that there is an operating unit for turning on / off the drive of the motor, and a first coupler and a second coupler can be selectively connected at the discharge port of the pump unit, the first coupler can be connected to a grease supply target, and the second coupler has a second operating unit for controlling the motor and can be connected to the grease supply target.

[0056] According to this configuration, the operation portion and the first coupler, and the second operation portion and the second coupler can be selectively used according to the work site, which can contribute to improved workability.

[0057] In one embodiment of the present disclosure, the second operating unit may include at least a switch for turning on / off driving of the motor and an operating member for operating the switch.

[0058] According to this configuration, the presence or absence of grease discharge can be switched simply by operating the operating member, and thus the usability is improved.

[0059] In one embodiment of the present disclosure, the second operating unit may include a speed change operating unit capable of changing the rotation speed of the motor.

[0060] According to this configuration, the discharge amount of grease can be easily changed by operating the speed change operation portion.

[0061] In one embodiment of the present disclosure, the tank may be a tank that is circular in a plan view and has a capacity of at least 16 liters.

[0062] According to this structure, a large grease storage amount can be ensured, and even if there are many grease injection locations, the grease is unlikely to run out.

[0063] In one embodiment of the present disclosure, a display unit for displaying at least the remaining power of the battery may be provided.

[0064] According to this configuration, the battery can be replaced or charged before it runs out, and the operation is less likely to be interrupted for a long time.

[0065] In one embodiment of the present disclosure, the battery may also be covered by a cover.

[0066] According to this structure, it is possible to prevent the grease from adhering to the battery.

[0067] In one embodiment of the present disclosure, a grease heating mechanism may be provided in the tank.

[0068] According to this configuration, even if the temperature of the working environment is low, the grease does not harden, and a decrease in workability due to discharge failure can be prevented.

[0069] [Example 1]

[0070] Hereinafter, embodiments of the present disclosure will be described based on the drawings.

[0071] Figure 1 It is a perspective view showing an example of the grease discharge device of the present disclosure. Figure 2 (A) is a side view of the grease discharge device. Figure 2 (B) is a top view. Figure 2 (C) is the main view, Figure 2 (D) is the rear view, Figure 3 yes Figure 2 AA line cross-sectional view in (C).

[0072] The grease discharge device 1 includes a tank 2 , a cover 3 , a pump unit 4 , a battery pack 5 , and a mounting portion 6 .

[0073] The tank 2 is a circular shape in a top view with an opening on the upper surface for storing grease. The capacity of the tank 2 is, for example, 16 liters, which is larger than the capacity of an existing portable cartridge. The tank 2 uses a bucket or a barrel. For example, in the case of a bucket, the capacity can be 18 liters or 20 liters. For example, in the case of a barrel, the capacity can be about 200 liters. It should be noted that in any case, the capacity can be arbitrarily determined between 15 liters and 250 liters.

[0074] The tank 2 is provided with a middle cover 7. The middle cover 7 is in a conical shape with a suction pipe 12 of the pump unit 4, which will be described later, passing through the center, and is placed on the upper surface of the stored grease. By providing the middle cover 7, it is possible to suppress the mixing of air into the grease. At least a portion of the lower surface of the middle cover 7 is in contact with the upper surface of the grease G. When the amount of the grease G decreases, the middle cover 7 moves downward.

[0075] The tank 2 is directly held by the tank holder 2a by being placed on the tank holder 2a with an upper opening from above. The tank 2 held by the tank holder 2a is restricted from moving forward, backward, left, and right by the peripheral wall 2b of the tank holder 2a. In addition, the tank 2 held by the tank holder 2a is restricted from moving downward by the lower surface 2c of the tank holder 2a. By using the tank holder 2a, an existing bucket or barrel can can be used directly.

[0076] The cover 3 is a circular shape in a top view that closes the upper surface of the can 2. A peripheral edge portion 8 covering the upper outer periphery of the can 2 is provided on the outer periphery of the cover 3. Three thumb screws 9, 9, ... are provided at equal intervals in the circumferential direction on the peripheral edge portion 8. The thumb screws 9 are screwed in to press the upper outer periphery of the can 2, thereby fixing the cover 3 to the can 2. Dust, garbage, etc. are difficult to enter the can 2 through the cover 3. In addition, as a fixing mechanism for the cover 3, a member other than a thumb screw can also be used. For example, a latch or a positive locking structure can be used.

[0077] The pump unit 4 is connected to the cover 3 . This connection is performed by fixing with screws or fixing with welding. The pump unit 4 includes a motor 10 , a pump unit 11 , a suction pipe 12 , a discharge pipe 13 , and a controller 14 .

[0078] The motor 10 is arranged on the upper side of the housing 15, and the housing 15 is vertically arranged in the center of the upper surface of the cover 3 in the up-down direction. The housing 15 is formed by fixing the left housing 15a and the right housing 15b with screws. The motor 10 is an inner rotor type brushless motor. In this brushless motor, a rotor 10b is arranged inside a cylindrical stator 10a. The stator 10a has a stator core, an insulator and a coil. The rotor 10b has a rotor core and a magnet. The brushless motor also has three magnetic sensors for detecting the rotation of the rotor 10b.

[0079] The pump unit 11 is disposed below the motor 10 in the housing 15 and includes a fan (impeller) 11 a that is rotated by the drive of the motor 10 . The fan 11 a is disposed below the motor 10 .

[0080] The suction pipe 12 is connected to the suction side of the fan 11a at the lower part of the pump unit 11 and passes through the center of the cover 3, and the lower end extends to the vicinity of the bottom surface of the tank 2. The length of the suction pipe 12 is substantially the same as the upper and lower lengths of the tank 2. The suction pipe 12 has a suction port 12a as an inlet of the grease at the lower end, and a connection port 12b as an outlet of the grease at the upper end. The connection port 12b is connected to the pump unit 11.

[0081] The discharge pipe 13 is connected to the discharge side of the fan 11a at the front of the pump unit 11 and extends forward through the housing 15. The discharge pipe 13 has an inlet 13a for grease at the rear end and a discharge port 13b as an outlet for grease at the front end. The inlet 13a is connected to the pump unit 11, and the discharge port 13b is connected to the flexible hose 20 described later.

[0082] The controller 14 is accommodated in the upper part of the housing 15 on the upper side of the motor 10. The controller 14 obtains power from the battery pack 5 and supplies power to the motor 10. A display unit 16 provided on the upper surface of the controller 14 is exposed on the upper surface of the housing 15. The display unit 16 displays the remaining power of the battery pack 5. The display unit 16 is clamped and fixed between the left housing 15a and the right housing 15b. An air inlet 17 is formed in the upper part of the housing 15 which is the right side of the controller 14. An exhaust port 18 is formed in the central part of the housing 15 which is the right side of the motor 10. When a fan (not shown) provided on a rotating shaft of the motor 10 rotates, air sucked from the air inlet 17 passes through the controller 14 and the motor 10 in sequence to cool the two respectively, and then is discharged from the exhaust port 18.

[0083] At the front end of the discharge pipe 13, a coupling 21A or a switch trigger 22 can be selectively connected via a flexible hose 20, respectively. Figures 1 to 3 In addition, if necessary, the discharge pipe 13 may be branched into two branches, and the coupler 21A and the switch trigger 22 may be connected to each other.

[0084] The coupling 21A can be connected to an oil filling part of a heavy machine or the like. When the coupling 21A is connected, a switch 23 is used. The switch 23 has an on button 23a and an off button 23b, and is electrically connected to the controller 14 via a cord indicated by a two-dot chain line. By pressing the on button 23a, an on signal is output to the controller 14, and by pressing the off button 23b, an off signal is output to the controller 14.

[0085] When the controller 14 receives an on signal generated by pressing the on button 23a, it drives the motor 10 to operate the pump unit 11. When the controller 14 receives an off signal generated by pressing the off button 23b, it stops the driving of the motor 10 and stops the operation of the pump unit 11. When receiving the on signal, the controller 14 rotates the motor 10 at full speed. When receiving the off signal, the controller 14 makes the rotation of the motor 10 zero. The switch 23 can be placed on the upper surface of the cover 3, or hung at an appropriate position within reach of the operator's hand, or carried by the operator for use.

[0086] Since the switch 23 is provided separately from the coupling 21A in this manner, the operator can activate / stop the pump unit 11 even if the operator is not near the heavy machine.

[0087] The switch 23 may be directly or indirectly fixed to the housing 15. In this case, after the coupler 21A is connected to the oiling site, the on button 23a and the off button 23b of the switch 23 fixed to the housing 15 may be pressed.

[0088] Furthermore, the maximum speed of the motor 10 can also be set to a plurality of levels in advance. For example, the maximum speed can be set to three levels, namely, low speed, medium speed, and high speed. If this setting is performed, when the on signal is received, if the low speed is set, the rotation of the motor 10 becomes low speed, if the medium speed is set, the rotation of the motor 10 becomes medium speed, and if the high speed is set, the rotation of the motor 10 becomes high speed. Of course, the maximum speed is not limited to three levels, and it can also be set to four or more levels.

[0089] The switch trigger 22 has a coupling 21B at the front end. The coupling 21B is the same shape as the coupling 21A and can be connected to the oil filling part of heavy machinery, etc. The switch trigger 22 has a switch 24 and a trigger 25 for operating the switch 24, and is electrically connected to the controller 14 via a soft wire (not shown) along the flexible hose 20. When the trigger 25 is pressed, the switch 24 is turned on, and the controller 14 drives the motor 10 to work the pump part 11. The controller 14 increases the rotation speed of the motor 10 according to the increase in the pressing amount of the trigger 25, thereby increasing the discharge amount of grease from the pump part 11. In this way, since the rotation speed of the motor 10 is set to a rotation speed corresponding to the pressing amount of the trigger 25, it becomes a structure suitable for oiling the amount that the operator thinks is necessary. When the pressing of the trigger 25 is released and the switch 24 is turned off, the controller 14 stops the driving of the motor 10 and stops the operation of the pump part 11.

[0090] Furthermore, the motor 10 can be rotated at full speed by pressing the trigger 25. In this case, the maximum rotation speed can be set in advance in a plurality of steps, similar to the switch 23.

[0091] The battery pack 5 is connected to a battery base 26 fixed to the upper surface of the cover 3. The battery base 26 is formed by fixing a left base 26a and a right base 26b with screws. A battery connector 29 is clamped and fixed at the joint between the left base 26a and the right base 26b. The battery pack 5 is the same as the battery pack used in the electric tool, for example, a battery pack with a rated voltage of 36V. The battery pack 5 is engaged with the battery connector 29. The battery connector 29 is electrically connected to the controller 14 via a flexible wire not shown in the figure. By engaging with the battery connector 29, the battery pack 5 can supply power to the controller 14 via the battery connector 29. The battery pack 5 is connected to the battery base 26, and is thus fixed to the cover 3 via the battery base 26.

[0092] The battery base 26 is a rectangular shape in a plan view fixed to the upper surface of the cover 3. The upper surface, left and right side surfaces, and a portion of the rear surface of the battery base 26 form an integrated opening and closing cover 27. The lower end of the rear surface of the opening and closing cover 27 is hinged, and the latch 28 provided at the front end of the upper surface can be opened and closed in the vertical direction with the hinge as the axis.

[0093] When the opening and closing cover 27 is closed with the battery pack 5 engaged with the battery connector 29, the battery pack 5 is completely covered by the battery base 26 and the opening and closing cover 27. Therefore, the influence of external factors of the battery base 26 and the opening and closing cover 27 on the battery pack 5 can be suppressed to a low level.

[0094] The placing portion 6 includes a frame 30 , two tires 31 , 31 , and a handle 32 .

[0095] The frame 30 has a pair of left and right pillars 33, 33 and a plurality of connecting rods 34, 34, ... The left and right pillars 33, 33 are fixed to the rear surface of the tank 2 in the vertical direction. The connecting rods 34, 34 are laid between the pillars 33, 33 in the horizontal direction. A pair of left and right brackets 35, 35 protruding rearward are provided at the lower part of the pillars 33, 33.

[0096] The tires 31, 31 are attached to the left and right ends of the shaft 36 that penetrates the brackets 35, 35 in the left-right direction. The tires 31, 31 are also in contact with the ground when the tank 2 is in contact with the ground.

[0097] The handle 32 is composed of a pair of left and right vertical rods 37, 37 protruding from the left and right pillars 33, 33 and a horizontal rod 38 connecting the upper ends of the vertical rods 37, 37. The vertical rods 37, 37 can move in the up-down direction relative to the pillars 33, 33, and can be fixed at a predetermined position by a fixing mechanism (such as a thumb screw) not shown in the figure. Therefore, the height of the horizontal rod 38 can be adjusted.

[0098] The grease discharge device 1 constructed as described above can store a predetermined amount of grease in the tank 2, and discharge the grease from the coupler 21A or 21B when the battery pack 5 is mounted on the battery connector 29 in the battery base 26. That is, when the operator presses the on button 23a of the switch 23 or presses the trigger 25 when the coupler 21A or 21B is connected to the oil filling part of heavy machinery, the controller 14 drives the motor 10. Then, the pump section 11 of the pump unit 4 operates to suck the grease in the tank 2 from the suction pipe 12 and discharge it from the discharge pipe 13. The discharged grease is discharged from the coupler 21A or 21B via the flexible hose 20 and supplied to the oil filling part. When the off button 23b of the switch 23 is pressed or the pressing operation of the trigger 25 is released, the driving of the motor 10 stops, and the discharge of the grease stops.

[0099] Furthermore, when the grease discharge device 1 is moved, the horizontal bar 38 of the handle 32 is gripped to tilt the placement portion 6 together with the tank 2 backward. Then, the tank 2 is lifted from the ground while the tires 31, 31 are in contact with the ground. Therefore, the operator can directly use the placement portion 6 to move the grease discharge device 1 to any place. In particular, a bucket weighs about 20 kg and a barrel weighs about 200 kg, but both can be easily moved using the tires 31.

[0100] When the bucket or barrel is not used directly, the grease is transferred from the bucket or the like into the tank 2. In this case, the thumb screw 9 is loosened to remove the cover 3 from the tank 2. Then, the pump unit 4 and the battery base 26 integrated with the cover 3 are also removed at the same time. Therefore, the grease can be supplied into the tank 2 from the upper surface of the opening.

[0101] Thus, the grease discharge device 1 of the above-mentioned embodiment 1 involved in the first structure of the present disclosure includes: a ground-contact type tank 2, whose upper surface is open and capable of storing grease; a cover 3, which closes the upper surface of the tank 2; a pump unit 4, which is connected to the cover 3 and sucks the grease in the tank 2 and discharges it to the outside through the drive of the motor 10; and a detachable battery pack 5 (an example of a battery), which drives the pump unit 4.

[0102] According to this structure, a large grease storage amount can be ensured by using the ground-contact type tank 2. In addition, since the motor 10 that drives the pump unit 4 is driven by the battery pack 5, a power cord and an air hose are not required, the handling property becomes good, and it is not easy to be restricted by the working position.

[0103] The battery pack 5 is disposed on the upper surface of the cover 3 .

[0104] Therefore, the battery pack 5 can be arranged so as not to protrude outside the tank 2 , and the battery pack 5 does not hinder the operation.

[0105] The tank 2 has a placement portion 6 (an example of a moving mechanism).

[0106] Therefore, the tank 2 can be easily moved.

[0107] The mounting portion 6 includes a tire 31 .

[0108] Therefore, the tank 2 can be easily moved, and the moving direction can be easily changed.

[0109] The placement portion 6 has a handle 32 .

[0110] Therefore, the placement section 6 can be easily operated.

[0111] The handle 32 is height-adjustable.

[0112] This makes it easy for an operator to operate the placement unit 6 .

[0113] It has an on button 23a and an off button 23b (an example of an operating unit) for turning the drive of the motor 10 on / off, and a coupler 21A (an example of a first coupler) and a coupler 21B (an example of a second coupler) can be selectively connected to the discharge port 13b of the pump unit 4, the coupler 21A can be connected to a grease supply target, and the coupler 21B has a switch trigger 22 (an example of a second operating unit) for controlling the motor 10 and can be connected to a grease supply target.

[0114] Therefore, it is possible to select between the coupling 21A, the switch 23, and the switch trigger 22 to be used according to the work site, which can contribute to improved workability.

[0115] The switch trigger 22 includes a switch 24 for turning on / off the driving of the motor 10 and a trigger 25 (an example of an operating member) for operating the switch 24 .

[0116] Therefore, the presence or absence of grease discharge can be switched only by operating the trigger 25, and the usability is good.

[0117] The switch trigger 22 includes a trigger 25 (an example of a speed change operation unit) that can change the rotation speed of the motor 10 .

[0118] Therefore, the discharge amount of grease can be easily changed by adjusting the pressing amount of the trigger 25 .

[0119] The tank 2 is circular in plan view and has a capacity of at least 16 liters.

[0120] Therefore, a large grease storage volume can be ensured, and the grease is less likely to run out even if there are many grease injection locations.

[0121] The display unit 16 for displaying the remaining power of the battery pack 5 is provided.

[0122] This allows replacement and charging of the battery pack 5 before battery exhaustion, and makes it less likely that work will be interrupted for a long time.

[0123] The battery pack 5 is covered by a battery base 26 and an opening and closing cover 27 (an example of a cover).

[0124] Therefore, it is possible to prevent the grease from adhering to the battery connector 29 and the battery pack 5 .

[0125] Hereinafter, a modification example of the first embodiment will be described.

[0126] The number of battery packs is not limited to one, and a plurality of battery packs may be provided. Figure 4 , Figure 5 and Figure 6An example is shown in which three battery packs 5 are provided. Figure 1 to Figure 3 The upper surface of the cover 3 is similarly provided. Another two battery packs 5, 5 are provided up and down on the rear side of the frame 30 of the mounting portion 6. In this case, each of the upper and lower battery packs 5 is also mounted on the battery connector 29 in each battery base 26 mounted on the rear surface of the frame 30, and the entirety is covered by the battery base 26 and the opening and closing cover 27. The three battery packs 5 are connected in parallel and used one by one in sequence by the controller 14. However, two or three battery packs 5 may be connected in series and used simultaneously.

[0127] If a plurality of battery packs 5 are provided in this manner, they can be used continuously for a long period of time, and interruption of work due to replacement of the battery packs 5 and the like can be reduced.

[0128] It should be noted that the number and configuration of battery packs are not limited to Figures 4 to 6 For example, the battery pack on the upper part of the cover can be removed and only two battery packs on the rear side of the frame can be set. It is also possible to set only one of the upper and lower battery packs on the rear side of the frame.

[0129] The rated voltages of the battery packs may not all be the same.

[0130] In winter or in cold working areas, when the working environment is low in temperature, the grease may become hard and difficult to discharge. Therefore, it is preferable to provide a heating mechanism for the grease in the tank.

[0131] Figures 4 to 6 An example of an electric heater as an example of a heating mechanism being provided in a tank is shown. Among them, a first electric heater 40 is provided on the circumference of the tank 2, and a second electric heater 41 is provided on the bottom surface of the tank 2. Each electric heater 40, 41 is a structure in which electric heating wires are arranged in a planar shape (for example, a winding shape) in a flexible sheet, and generates heat by powering from the controller 14 to heat the outer surface of the tank 2. The first electric heater 40 has a strip shape with a predetermined width in the up and down direction, and is wound around the circumference of the tank 2. The second electric heater 41 is circular in a top view, and is between the tank support 2a covering the bottom of the tank 2 from below and the bottom surface of the tank 2. The two electric heaters 40, 41 can be powered on at the same time when the switches 23, 24 are turned on, or a switch for selecting powering on the two electric heaters 40, 41 can be separately provided on the housing 15. The power source of the electric heaters 40, 41 is the battery pack 5 that drives the pump unit 11. However, the electric heaters 40 and 41 and the pump unit 11 may be powered by different power sources (for example, different battery packs if there are a plurality of battery packs).

[0132] If the first electric heater 40 and the second electric heater 41 are provided in this manner, the tank 2 can be heated from the outside to warm the grease. Therefore, even if the temperature of the working environment is low, the grease will not harden, and a decrease in workability due to poor discharge can be prevented.

[0133] It should be noted that the first electric heater and the second electric heater may be provided on either side instead of both sides. The form of the electric heater itself may be appropriately changed. The number of electric heaters may also be increased. The electric heater may also be provided inside the tank.

[0134] The form of the pump unit can also be changed appropriately. Figure 7 , Figure 8 and Fig. 9 An example of a grease discharge device in which the pump unit is modified is shown in FIG. 1A. In the grease discharge device 1A, the pump unit 4A is not a pump unit using a fan, but has a plunger-type pump unit 42 in the housing 15. The plunger-type pump unit 42, as disclosed in Patent Document 1, sucks grease by moving the plunger up and down through a crank mechanism. The housing 15 has a protrusion 43 extending rearward. The protrusion 43 is provided with a gear unit 44, a motor 10, and a controller 14 in order from the front, and a battery connector 29 is provided at the rear end of the protrusion 43. When the motor 10 is driven, the plunger of the pump unit 42 moves up and down via the gear unit 44, and sucks grease from the suction pipe 12.

[0135] In addition, in the grease discharge device 1A, the direction of the protrusion 43 is not limited to the rear, and it may protrude in the left-right direction or upward. Figure 1 As shown, a battery base covering the battery pack 5 may be provided at the end of the protrusion 43. If the protrusion 43 is made to protrude upward, the battery connector 29 and the battery pack 5 do not protrude outward from the can 2 in a plan view, and thus become compact in the front-rear direction.

[0136] In addition, by using other structures, the pump unit 4A can be arranged within the range of the outer diameter of the tank 2. For example, Figure 7 The center of the front-to-back length of the pump unit 4A and the battery pack 5 coincides with the center of the front-to-back length of the tank 2 .

[0137] In addition, Figure 7 to Figure 9 , a modification example of the moving mechanism is also shown. In this modification, a plurality of casters 45, 45, ... are provided on the bottom surface of the tank 2 instead of the placement portion, so that the tank 2 can be moved.

[0138] If the moving mechanism is configured as a plurality of casters 45 provided on the bottom surface of the tank 2 in this manner, the moving mechanism can be formed compactly.

[0139] In addition, a stopper may be provided on the caster 45. In addition, a handle may be provided on the upper surface of the cover 3. Figure 4 As shown, a first electric heater 40 and a second electric heater 41 may also be provided in the tank 2 .

[0140] The following changes can be made in common in the above-mentioned first embodiment and each modification example.

[0141] The capacity of the tank is not limited to 16 liters. The grease discharge device involved in the second structure of the present disclosure includes: a tank with a capacity of 10 liters or more, a pump unit that sucks the grease in the tank and discharges it to the outside by driving a motor, and a detachable battery that drives the pump unit. Even the grease discharge device involved in the second structure of the present disclosure can be appropriately used for heavy machinery with many oiling parts.

[0142] The tank is not limited to a circle when viewed from above, but can also be other shapes such as an oblong, a quadrilateral, a polygon, etc. when viewed from above.

[0143] The cover is not limited to a structure that can be detached from the tank, and may be connected to the tank in an openable and closable manner using a hinge. A grease supply port may also be provided on the cover or the tank.

[0144] The speed change operation part for changing the rotation speed of the motor is not limited to the trigger of the switch trigger. Other speed change operation parts such as a dial may also be provided as the speed change operation part. There may also be no speed change operation part.

[0145] In the above examples, the first connector, the switch, and the switch trigger are selectively connected, but only one of them may be connected.

[0146] Switches and controllers can also communicate wirelessly instead of via wires.

[0147] The battery is not limited to a battery pack for electric tools, and the type and rated voltage may be changed as appropriate.

[0148] The type of battery base can also be changed appropriately. Figure 1 to Figure 6 In the example of , the opening and closing cover can also be omitted.

[0149] The moving mechanism may be omitted and the tank may be placed directly on the ground for use.

[0150] The display unit is not limited to displaying the remaining battery power, but can also display other information. For example, it can display the amount of grease injected into the injection part from the time the switch is turned on to the time the switch is turned off. In addition, a sensor that detects the temperature and storage amount of the grease in the tank can be provided, and the temperature and remaining amount of the grease detected by the sensor can be displayed. In addition, in order to grasp the remaining amount of grease, an observation window can also be provided in the tank.

[0151] An AC / DC converter may be provided in the controller so that a power line can be connected, thereby enabling the use of commercial power.

[0152] [Example 2]

[0153] Next, other embodiments of the present disclosure will be described.

[0154] Fig.10 The grease discharge device 1B shown in the figure is in a horizontally long rectangular shape when viewed from above, and has an upper cartridge storage tank (hereinafter referred to as "storage tank") 50 and a lower housing 51. Fig.11 As shown, four cartridges 52, 52, ... are arranged in the left-right direction in the storage tank 50. Each cartridge 52 is filled with about 500 ml of grease. Therefore, about 2 liters of grease can be stored in the storage tank 50. On the bottom surface of the storage tank 50, four support rings 53, 53, ... are arranged in the left-right direction and protrude upward. The lower end of each cartridge 52 is held by each support ring 53 and supported in the up-down direction. In the center of each support ring 53, a through hole 54 is formed at the bottom of the storage tank 50. The lower end of each cartridge 52 is closed by a buffer rubber 55, and an outlet 56 provided in the center of the buffer rubber 55 passes through the through hole 54 and protrudes into the shell 51. Each outlet 56 is connected to a branch pipe 57, 57, ... branched into four from the suction pipe 12 in the shell 51. The upper end of each cartridge 52 is closed by a rubber seal 58 to prevent the mixing of air.

[0155] A cartridge cover 60 is provided on the upper portion of the storage tank 50. The front surface of the cartridge cover 60 is rotatably coupled to the storage tank 50 by a hinge 61. A latch 62 that can be engaged with and disengaged from the storage tank 50 is provided on the back surface of the cartridge cover 60, so that the upper portion of the storage tank 50 can be opened and closed arbitrarily.

[0156] The pump unit 4B is accommodated in the housing 51. The pump unit 4B is arranged on the right side of the housing 51, with the motor 10 below and the pump part 11 above. The motor 10 is the inner rotor type brushless motor described in Example 1. The fan 11a is arranged in the pump part 11 at the upper part of the motor 10. The suction pipe 12 connected to the pump part 11 is connected to four cartridges 52 via each branch pipe 57. The discharge pipe 13 is connected to the right side of the pump part 11, and after protruding to the right side through the right side surface of the housing 51, it is bent forward. On the upper side of the discharge pipe 13, a display part 16 is provided on the right side surface of the housing 51. The controller 14 is arranged on the lower side of the motor 10. Below the controller 14, an air inlet 17 is formed on the bottom surface of the housing 51, and on the right side of the motor 10, an exhaust port 18 is formed on the right side surface of the housing 51.

[0157] A cutout portion 63 is formed on the left side of the pump unit 4B and on the lower left side of the housing 51. The battery base 65 is installed in a posture that it is just accommodated in the cutout portion 63. A battery connector 29 is fixed to the upper surface of the battery base 65. A portion of the battery base 65 forms an opening and closing cover 66 in which a portion of the left side surface, the front and rear surfaces, and a portion of the lower surface are integrated. The lower surface of the opening and closing cover 66 is connected to the battery base 65 by a hinge 67, and a latch 68 is provided on the left side. The left side of the battery base 65 can be opened and closed by rotating around the hinge 67 as the axis. The battery connector 29 is horizontally arranged on the upper surface of the cutout portion 63. The battery pack 5 is slid and installed on the battery connector 29 from the left side in a state where the opening and closing cover 66 is opened.

[0158] A shoulder strap 70 is provided on the front surface of the grease discharge device 1B. The shoulder strap 70 includes a backrest 71 and a pair of left and right straps 72, 72. The backrest 71 is mounted across the front surface of the storage tank 50 and the front surface of the housing 51. The upper and lower ends of the straps 72, 72 are connected to the backrest 71 on the left and right sides of the backrest 71, respectively.

[0159] The grease discharge device 1B constructed as described above can carry the grease discharge device 1B by putting both arms through the left and right belts 72, 72, with the cartridge 52 contained in the storage tank 50 and the battery pack 5 installed in the battery connector 29 in the battery base 65. In addition, when the on button 23a of the switch 23 is pressed or the trigger 25 is pressed, the controller 14 drives the motor 10, while the coupling 21A or 21B is connected to the oiling part of heavy machinery or the like. Then, the pump section 11 of the pump unit 4B operates to suck the grease in each cartridge 52 from the suction pipe 12 through each branch pipe 57 and discharge it from the discharge pipe 13. The discharged grease is discharged from the coupling 21A or 21B through the flexible hose 20 and supplied to the oiling part. When the off button 23b of the switch 23 is pressed or the trigger 25 is released, the driving of the motor 10 stops, and the discharge of the grease stops. Since the operator is carrying the grease discharge device 1B, he can move directly to the next grease filling location.

[0160] When supplying grease into the storage tank 50 , the cartridge 52 may be replaced with the opening and closing cover 66 opened.

[0161] Thus, the grease discharge device 1B of the above-mentioned embodiment 2 includes a carrying-type storage tank 50 (an example of a tank) capable of storing approximately 2 liters of grease, a pump unit 4B that sucks the grease in the storage tank 50 and discharges it to the outside through the drive of the motor 10, and a detachable battery pack 5 that drives the pump unit 4B.

[0162] According to this structure, a large amount of grease storage can be ensured by the carrying type storage tank 50. In addition, since the motor 10 that operates the pump unit 4B is driven by the battery pack 5, a power cord and an air hose are not required, the handling becomes good, and it is not easily restricted by the working position. In particular, even if there is a grease injection site at a high place, the operator can carry the grease discharge device 1B to the site and inject a large amount of grease through the coupling 21A or 21B.

[0163] In addition, the grease discharge device 1B of the above-mentioned embodiment 2 includes: a storage tank 50 (an example of a tank) for storing grease, a pump unit 4B connected to the storage tank 50, a motor 10 that drives the pump unit 4B, a battery pack 5 that can supply power to the motor 10, and a trigger 25 that can supply power from the battery pack 5 to the motor 10 through prescribed operations and is separated from the pump unit 4B.

[0164] According to this structure, since the motor 10 that operates the pump unit 4B is driven by the battery pack 5, a power cord and an air hose are not required, the handling becomes good, and it is not easily restricted by the working position. In addition, since the pump unit 4B is operated by operating the trigger 25 separated from the pump unit 4B, the operator can easily control the supply and stop of the grease at hand.

[0165] The storage tank 50 is a backpack type having a shoulder strap 70 for being carried on the back.

[0166] Therefore, the grease discharge device 1B can be moved together with the operator.

[0167] The storage tank 50 stores a plurality of cartridges 52 filled with grease, and the pump unit 4B sucks the grease from the cartridges 52 .

[0168] Therefore, the cartridge 52 can be used to easily supply and replenish the grease to the storage tank 50 .

[0169] The storage tank 50 has a rectangular shape in a plan view.

[0170] Therefore, the storage tank 50 can be easily carried and the storage amount of grease can be ensured.

[0171] The pump unit 4B and the battery pack 5 are arranged in the lower part of the storage tank 50 .

[0172] Therefore, the heavy storage tank 50 is located on the upper side, which reduces the burden on the operator. The grease can also be easily supplied and replenished from the upper side of the storage tank 50.

[0173] Hereinafter, a modification example of the second embodiment will be described.

[0174] The grease heating mechanism may be provided in the backpack type storage tank 50 . Fig.12 and Fig.13 An example is shown.

[0175] In the storage tank 50, a first electric heater 40 in a belt shape is arranged around four cartridges 52 and wound around the four cartridges 52. In addition, a second electric heater 41 is arranged between the bottom surface of the storage tank 50 and the buffer rubber 55 of each cartridge 52 except for the outlet 56.

[0176] If the first electric heater 40 and the second electric heater 41 are provided in this way, the grease can be kept warm by heating each cartridge 52 from the outside. Therefore, even if the temperature of the working environment is low, the grease will not harden, and the reduction in workability caused by poor discharge can be prevented.

[0177] It should be noted that the first electric heater and the second electric heater may be provided on either side instead of both sides. The type of the electric heater itself can be changed appropriately. The number of electric heaters can also be increased so as to be provided for each cartridge. The electric heater can also be provided on the outside of the tank.

[0178] Fig.14 The example in which the number of cartridges 52 is set to 8 in the grease discharge device 1B is shown. The front-to-back width of the storage tank 50 is increased, and the rows of four cartridges 52 are set to two rows in front and back. The number of cartridges 52 is not limited to this example, and can be appropriately increased or decreased. The arrangement can also be appropriately changed. The shape and size of the cartridge are also not limited to the above example.

[0179] The shoulder strap is not limited to two parallel left and right straps, and for example, a cross-shaped strap that crosses in front of the chest may be used. The length of the strap may also be adjusted.

[0180] A configuration may be adopted in which the cartridge is not housed in the tank. Fig.15 and Fig.16 An example is shown. In the grease discharge device 1C, grease G can be directly stored in the tank 50a. The storage amount is 3.4 liters. The middle cover 7 is provided in the tank 50a. An outlet 73 is formed in the center of the bottom surface of the tank 50a, and the suction pipe 12 is connected to the outlet 73. Among them, when the cartridge cover 60 is opened and the middle cover 7 is removed, grease is directly supplied to the tank 50a from the top.

[0181] A supply port 75 which is normally closed by a cap 74 is provided on the side of the tank 50a. A loading fitting which allows grease to be directly supplied from a bucket or the like by removing the cap 74 can be mounted on the supply port 75. If the supply port 75 is provided and the loading fitting is mounted, grease can be easily supplied without opening the cartridge cover 60. However, the supply port may not be provided.

[0182] Fig.16An example in which an electric heater 76 is provided in the tank 50a is also shown. The electric heater 76 is a rectangular shape placed on the bottom surface of the tank 50a in a plan view, and a through hole 77 is formed in the center to connect the outlet 73 with the inside of the tank 50a. The electric heater is not limited to being provided on the bottom surface of the tank 50a, but may also be provided on the inner side surface. It may also be provided on the outer surface of the tank 50a.

[0183] Fig.15 and Fig.16 An example of a tank having a shoulder strap 79 instead of a shoulder strap is also shown. Belt connecting parts 78, 78 are provided on the left and right sides of the tank 50a. Both ends of the shoulder strap 79 that crosses the top of the tank 50a in the left-right direction are connected to the belt connecting parts 78, 78. Therefore, the operator can carry the grease discharge device 1C on his shoulders and support it through the shoulder strap 79.

[0184] In this way, even if the tank 50a is configured as a shoulder-carrying type having a shoulder strap 79, the grease discharge device 1C can be moved together with the operator.

[0185] In addition, even the shoulder type can accommodate a cartridge in the tank.

[0186] The following changes can be made in common in the above-mentioned second embodiment and each modification example.

[0187] The form of the pump unit and the number of battery packs can be changed appropriately.

[0188] Fig.17 The figure shows a grease discharge device 1D having a storage tank 50 that accommodates eight cartridges 52, in which a pump unit 4C including a motor 10, a pump unit 11, and a controller 14 is arranged in the left-right direction in a housing 51. The pump unit 11 is a plunger type, and is arranged in the center of the left-right direction on the upper side of the housing 51. The motor 10 is arranged on the left side of the pump unit 11, and the controller 14 is arranged on the left side of the motor 10. In this case, the air inlet 17 is provided on the left side of the housing 51 on the left side of the controller 14 (not shown). The exhaust port 18 is provided on the rear surface of the housing 51 behind the motor 10 (not shown). The display unit 16 is provided on the upper side of the air inlet 17 on the left side of the housing 51 (not shown).

[0189] Fig.17 An example in which two battery packs 5 are provided is also shown. The battery base 65 is formed long in the left-right direction on the lower side of the housing 51, and has an opening and closing cover 66 that is integrated with each part of the rear surface, the left and right side surfaces, and the lower surface. The lower surface of the opening and closing cover 66 is connected to the battery base 65 by a hinge 67, and a latch 68 is provided on the rear surface of the opening and closing cover 66 so that the rear surface of the battery base 65 can be opened and closed. Two battery connectors 29 are provided on the left and right sides of the battery base 65 and the battery packs 5 are slidably mounted from the front.

[0190] Since the front-to-back width of the battery base 65 is large, the battery connector 29 can be oriented in the front-to-back direction to accommodate the battery pack 5 in the front-to-back direction. If the left-right width of the battery base 65 is large, two battery packs 5, 5 can be slid and installed in the left-right direction from the left and right sides to be accommodated back to back. Three or more battery packs can also be accommodated.

[0191] In addition, as the layout of the pump unit and the battery relative to the tank, it is also possible to consider Fig.18 1E schematically shown in FIG. 1 , a plunger-type pump unit 11 is arranged on the lower side of the tank 50b, and a motor 10, a controller 14, and a battery pack 5 are arranged on the left side of the tank 50b. This can also be reversed. The pump unit 11 can also be a plunger type. The tank 50b can be a cartridge storage type, or a structure that directly stores grease, and can be a backpack type or a shoulder type.

[0192] In addition, it is also possible to consider Fig.19 In the embodiment of the present invention, the pump unit 11 of the plunger type is arranged at the lower side of the tank 50b, and the motor 10, the controller 14, and the battery pack 5 are arranged at the rear side of the tank 50b, as in the grease discharge device 1F schematically shown in FIG. 1 . In this case, the pump unit 11 may also be of the plunger type. The tank 50b may be of the cartridge storage type, or of the structure for directly storing the grease, and may be of the piggyback type or of the shoulder type.

[0193] The capacity of the tank is not limited to the above examples, and as long as it can supply at least 1 liter of grease, it can be used for multiple oiling locations. The tank is not limited to a rectangular shape in a top view, and can also be a circular shape in a top view, a semicircular shape in a top view, an oblong shape in a top view, etc. The lid can also be detachable without being connected by a hinge.

[0194] The discharge pipe may also protrude from the left side instead of the right side of the housing.

[0195] The speed change operation part for changing the rotation speed of the motor is not limited to the trigger of the switch trigger. Other operation parts such as a dial may also be provided as the speed change operation part. There may also be no speed change operation part.

[0196] In the above examples, the first connector, the switch, and the switch trigger are selectively connected, but only one of them may be connected.

[0197] Switches and controllers can also communicate wirelessly instead of via wires.

[0198] The battery is not limited to a battery pack for electric tools, and the type and rated voltage may be changed as appropriate.

[0199] The form of the battery base can also be changed appropriately. The battery base can also be omitted.

[0200] The display unit is not limited to displaying the remaining battery power, but can also display other information. For example, it can display the amount of grease injected into the injection part from the time the switch is turned on to the time the switch is turned off. In addition, a sensor for detecting the temperature and storage amount of the grease in the tank can be provided, and the temperature and remaining amount of the grease detected by the sensor can be displayed.

[0201] An AC / DC converter may be provided in the controller so that a power line can be connected, thereby enabling the use of commercial power.

[0202] Furthermore, the grease oiling system according to the third configuration of the present disclosure can be constructed by using a common battery pack between a conventional portable grease discharge device storing grease of 1 liter or less and the grease discharge device of the present disclosure.

[0203] Fig. 20 1 is a diagram showing an example of a grease injection system S, and shows a grease gun 100 as a portable grease discharge device. The grease gun 100 (an example of a first grease discharge device) has a motor 102 (an example of a first motor) and a plunger-type pump unit 103 (an example of a first pump unit) driven by the motor 102 in a housing 101, and has a tank 104 (an example of a first tank) that accommodates a cartridge filled with grease of 1 liter or less. The battery pack 5 is mounted on a battery connector 105 provided on the housing 101.

[0204] Therefore, it is possible to construct a grease injection system S including the grease gun 100, for example, the grease discharge device 1 of Embodiment 1 (an example of a second grease discharge device), and a battery pack 5 capable of supplying power to the motor 102 and the motor 10. In this case, the tank 2 becomes an example of a second tank, the motor 10 becomes an example of a second motor, and the pump unit 11 becomes an example of a second pump unit.

[0205] In the grease injection system S, for example, the battery pack 5 can be used in a narrow place where a tank cannot be placed, by attaching the battery pack 5 to the grease gun 100, and in a wide place where there are many injection sites, by attaching the battery pack 5 to the grease discharge device 1. Therefore, the workability of the injection operation can be improved, and the number of battery packs used can be reduced.

[0206] It should be noted that the ground contact type grease discharge device may also be a grease discharge device of other embodiments or modified examples, or a carrying type grease discharge device may be assembled into the system, and the battery pack may be shared by multiple grease discharge devices and grease guns disclosed in the present invention. Fig. 20 It is also shown that Fig.11The grease discharge device 1B of the piggyback type storage tank 50 shown is an example of being assembled into a system.

[0207] In addition, a system in which a grease discharge device having a piggyback tank and a grease discharge device having a shoulder-type tank share a battery pack can also be considered.

[0208] Multiple battery packs may be shared among the systems.

[0209] Furthermore, based on the above contents, the following disclosures (1) to (14) can also be extracted.

[0210] (1) A grease discharge device, comprising:

[0211] A container of the holding type capable of storing at least 1 litre of grease;

[0212] a pump unit that sucks the grease in the tank and discharges it to the outside by being driven by a motor; and

[0213] A removable battery enables the pump unit to be driven.

[0214] (2) The grease discharge device according to (1), wherein the tank is a backpack type having a strap for being carried on the back.

[0215] (3) The grease discharge device according to (1), wherein the tank is a shoulder type having a shoulder strap.

[0216] (4) The grease discharge device according to any one of (1) to (3), wherein the tank accommodates a plurality of cartridges filled with grease, and the pump unit sucks grease from the cartridges.

[0217] (5) The grease discharge device according to any one of (1) to (3), wherein the tank has a replenishing port for replenishing grease.

[0218] (6) The grease discharge device according to any one of (1) to (5), wherein the tank has a rectangular shape in a plan view.

[0219] (7) The grease discharge device according to any one of (1) to (6), wherein the pump unit and the battery are arranged at a lower portion of the tank.

[0220] (8) A grease discharge device according to any one of (1) to (7), wherein the device has an operating unit for turning on / off the drive of the motor, and a first coupler and a second coupler can be selectively connected at the discharge port of the pump unit, the first coupler can be connected to a grease supply target, and the second coupler has a second operating unit for controlling the motor and can be connected to the grease supply target.

[0221] (9) The grease discharge device according to (8), wherein the second operating portion includes at least a switch for turning on / off the driving of the motor and an operating member for operating the switch.

[0222] (10) The grease discharge device according to (9), wherein the second operating unit includes a speed change operating unit capable of changing the rotation speed of the motor.

[0223] (11) The grease discharge device according to any one of (1) to (10), further comprising a display unit for displaying at least the remaining power of the battery.

[0224] (12) The grease discharge device according to any one of (1) to (11), wherein the battery is covered with a cover.

[0225] (13) The grease discharge device according to any one of (1) to (12), wherein the tank is provided with a grease heating mechanism.

[0226] (14) A grease discharge device, comprising:

[0227] Tanks, for storing grease;

[0228] a pump unit connected to the tank;

[0229] a motor to drive the pump unit;

[0230] a battery capable of supplying power to the motor;

[0231] The trigger can supply power from the battery to the motor through a predetermined operation and can be separated from the pump unit.

Claims

1. A grease discharge device, wherein: include: A tank of the ground contact type, with an opening on the upper surface, capable of storing grease; a cover closing an upper surface of the can; A pump unit connected to the cover and driven by a motor to suck the grease in the tank and discharge it to the outside; as well as A removable battery enables the pump unit to be driven.

2. The grease discharge device according to claim 1, wherein: The battery is arranged on the upper surface of the cover.

3. The grease discharge device according to claim 1 or 2, wherein: The battery is provided in plural numbers.

4. The grease discharge device according to any one of claims 1 to 3, wherein: The tank has a moving mechanism.

5. The grease discharge device according to claim 4, wherein: The moving mechanism has tires.

6. The grease discharge device according to claim 5, wherein: The moving mechanism has a handle.

7. The grease discharge device according to claim 6, wherein: The handle is height-adjustable.

8. The grease discharge device according to claim 4, wherein: The moving mechanism is a plurality of casters provided on the bottom surface of the tank.

9. The grease discharge device according to any one of claims 1 to 8, wherein: An operating unit is provided for turning on / off the driving of the motor, and A first coupling and a second coupling can be selectively connected to the discharge port of the pump unit. The first coupling is connectable to a grease supply target, The second coupling has a second operating unit for controlling the motor and is connectable to a grease supply destination.

10. The grease discharge device according to claim 9, wherein: The second operating unit includes at least a switch for turning on / off the driving of the motor and an operating member for operating the switch.

11. The grease discharge device according to claim 10, wherein: The second operating unit includes a speed change operating unit capable of changing the rotation speed of the motor.

12. The grease discharge device according to any one of claims 1 to 11, wherein: The tank is circular in plan view and has a capacity of at least 16 liters.

13. The grease discharge device according to any one of claims 1 to 12, wherein: A display unit is provided for displaying at least the remaining power of the battery.

14. The grease discharge device according to any one of claims 1 to 13, wherein: The battery is covered by a cover.

15. The grease discharge device according to any one of claims 1 to 14, wherein: The tank is provided with a heating mechanism for the grease.

16. A grease discharge device, wherein: include: A tank of the ground contact type, open on the upper surface and capable of storing grease, having a capacity of 10 litres or more; a pump unit that sucks the grease in the tank and discharges it to the outside by being driven by a motor; as well as A removable battery enables the pump unit to be driven.

17. A grease injection system, wherein: include: A first grease discharge device includes a first tank capable of storing grease of less than 1 liter, and a first pump driven by a first motor to discharge the grease in the first tank; a second grease discharge device having a second tank capable of storing grease of 10 liters or more and having a second pump driven by a second motor to discharge the grease in the second tank; and A battery is capable of supplying power to the first motor and the second motor.

Images