JP3318984B2 - Pail can pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pail pump having a structure in which a pump is moved up and down together with a cover of a pail by a lifter.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional pail can pump. The schematic configuration is a pail 1
, A cover 3 for covering the pail 1 on the base 2 from above, a pump 4 provided on the cover 3 for sending out the lubricating oil in the pail 1, and a drive unit 5 for the pump 4. The manual lifter 6 raises the cover 3 together with the pump 4 and the drive unit 5 so that the cover 3 can be replaced with a pail containing lubricating oil when the lubricating oil runs out. The cover 3 includes an upper plate 7 for mounting a pump,
A peripheral wall portion 8 extending downward from the peripheral edge of the upper surface plate 7 and reaching the base 2. The manual lifter 6 drives a rack formed on the support rod 10 by a pinion provided on a shaft of the handle 9. In this pail can pump, the cover 3 is lowered in use, and the lower end of the pail is in contact with the upper surface of the base 2. This is to prevent dust (mainly earth and sand) and water drops from entering the oil. Some pail cans have different heights depending on the capacity, but the size of the opening is constant.

[0003]

In the conventional pail can pump, since the cover 3 covers the upper surface and the entire peripheral surface of the pail 1 with a margin, the cover 3 is large and heavy.
Manually raising it requires a large operating force, and has a problem in operability. Further, since the lower end of the cover 3 is in contact with the base 2, dust attached to the upper surface of the base 2 may be attached to the lower end surface of the base 2, and the dust may fall into the pail when replacing the pail. is there. SUMMARY OF THE INVENTION An object of the present invention is to provide a pail can pump having a cover having a configuration in which the weight of the cover is reduced and dust is not likely to adhere to the lower edge.

[0004]

According to the present invention, a pail can placed on a base is lowered by using a lifting device to lower a pump device attached to an upper plate located above the pail can together with the upper plate. In a pail can pump configured to replace the pail can by raising the pump device, the cover of the opening of the pail can when the pump device is lowered, the upper plate, the upper plate An outer cylinder having a diameter substantially corresponding to the diameter of the pail, the upper end of which is fixed to the lower surface, and an outer cylinder or An inner cylinder which is supported on the upper surface plate side and has an edge portion which covers an opening edge of the pail at a lower end portion.

[0005]

This pail can pump is used as follows. With the pump device raised by the elevating device, the pail containing grease is placed at a predetermined position on the base, and the pump device is lowered by the elevating device, the pump first enters the grease, and the inner cylinder The lower edge of the inner cylinder is placed over the opening edge of the pail, and when further lowered, the amount of the inner cylinder that enters the outer cylinder increases, the length of the inner cylinder and the outer cylinder is shortened, and the lower cylinder stops at the predetermined lowering lower limit position. The pump is operated in this state. When grease is supplied to the desired lubrication section and the grease in the pail reaches the pump suction lower limit, the pump device is raised by the elevating device, and then the empty pail and the pail containing grease are replaced. I do. In a state where the pump can be used, the opening of the pail is closed by the inner cylinder, the outer cylinder, and the top plate, so that dust and water droplets do not enter. Also,
The lower edge of the inner cylinder is in contact with the opening edge of the pail and does not descend to the base. Therefore, no dust adheres to the lower end edge of the inner cylinder, and even if the inner cylinder is positioned higher than the opening of the pail with the pump device raised during the replacement of the pail, it remains in the pail. No garbage will fall. Since the inner cylinder and the outer cylinder are much smaller than the conventional cover surrounding the entire circumference of the pail, the weight is also reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. This pail can pump has a base 11, a top plate 1
2, pump device 13, lifting device 14, outer cylinder 15, inner cylinder 1
6 and so on.

[0007] As shown in FIG.
The lower end of the column 21 is fixed to each corner by a square substrate, and the upper end of each column is connected by a frame. The frame portion includes a lower groove member 32 which is a part of the lifting device 14 described later. The base 11 has four rubber legs 22 on the lower surface. The upper plate 12 is shown in FIGS.
(A) As shown in (b), it is a flat plate corresponding to the base 11, and includes the upper groove member 31 which is a part of the elevating device 14,
The pump device 13 is attached, and the lifting device 1 is moved up and down together with the pump device 13 while maintaining a horizontal state.
4. The pump device 13 is shown in FIG.
As shown in (b), a pump 25 is provided so as to protrude from the lower surface of the upper plate 12, a drive motor 26 mounted on the upper surface of the upper plate 12, a pressure gauge 27, a discharge unit 28, and terminals. The top plate 12 is provided with a viewing window 23 to which a transparent plate is attached, a wiring hole 30 for a level switch, and the like. Incidentally, reference numeral 19 in FIG. 1B denotes a follower plate.

As shown in FIGS. 3 and 4 (the upper half of FIG. 4 shows the upper surface plate 12 side and the lower half shows the frame portion at the upper end of the support 21), the lifting device 14 is formed in an X-shape. The upper plate 12 is moved up and down by changing the crossing angle of the cross member 33 which is axially connected. The cross members 33 are arranged on both sides, one of the upper ends is axially supported on the upper plate side by the upper support shaft 34, and the other of the upper ends has an upper roller 36 guided by the upper groove member 31,
One of the lower ends is disposed below the shaft 34 and is axially supported by the lower groove member 32 by a series of lower support shafts 35 common to both sides, and the other of the lower ends has a lower roller 37 on the lower groove member 32. are doing. The upper groove members 31 are disposed on both sides of the upper surface plate 12, and the lower groove members 32 are disposed below the lower groove members 32 and fixed to the columns 21.

In order to change the angle of the cross member 33, an arm 38 protrudes midway along the lower support shaft 35 as an elevating drive unit, and the tip of a handle shaft 40 which moves forward and backward by the rotation of the handle 39 is attached to the arm 38. It is connected by a pin parallel to the shaft 35 via a connecting portion 45. The handle shaft 40 has a screw portion 41 in the middle, and the screw portion 41
Is screwed into. The nut 42 is supported by a nut support 43, and the nut support 43 is swingably supported by a frame at the upper end of the column 21 by a support shaft 44 perpendicular to the handle shaft 41.

The lifting device 14 is operated by rotating the handle 39 so that the handle shaft 40 advances and retreats to move the arm 3.
The upper plate 12 can be moved up and down by changing the angle of the cross member 33 by swinging the upper plate 8.

The outer cylinder 15 is fixed to the lower surface of the upper plate 12 as shown in FIGS.
And has an outer diameter substantially corresponding to the outer diameter of about 12 cm. As shown in the figure, the inner cylinder 16 has an outer diameter that is slidably fitted in the inner hole of the outer cylinder 15 and has a length of 1.
It is about 5 cm, and has an enlarged edge 50 at the lower end that covers the upper end opening of the pail 1.
The lower chain connecting portions 51 are provided at three locations in the circumferential direction on the upper side of the upper side, and the upper chain connecting portions 52 are provided on the lower surface of the upper surface plate 12 on the upper side of each of the chain connecting portions. Chain 53. The support by the chain 53 should be appropriately adjusted in length depending on the use condition.

In the state shown in FIG. 2A, the inner cylinder 16 is in a state where the right half is hung on a chain 53 having a longer length, and in a state where the left half is hung on a chain 53 having a shorter length. This state is a state in which the cylindrical portion composed of the outer cylinder 15 and the inner cylinder 16 is extended, and when only a low pail can is used, or when a low and a high pail are mixed, it is set in the right half, When only high pail cans are used, keep them on the left half. In the expansion and contraction structure of this tubular portion, the opening size of the upper end of the pail is constant, but the height size is 20 mm.
Because it is a little different between a liter can and an 18 liter can,
This is to make it possible to handle pail cans of different heights and to reliably cover the opening of the pail can without being lifted.

In use, the upper plate 12 is raised in the state of FIG. 2A, the handle 39 is locked by the handle stopper 46, and the pail 1 containing grease is placed on the base 11, and The upper plate 1 is operated by operating the lifting device 14.
When the pump 2 is lowered, the pump 25 enters the grease in the pail 1 from the lower end, and the edge 50 of the lower end of the inner cylinder 16 is moved to the upper end of the pail 1 shortly before the upper surface plate 12 reaches the lowest position. When the upper surface plate 12 reaches the lowermost position when the upper plate 12 reaches the lowermost position, the cylindrical portion including the outer cylinder 15 and the inner cylinder 16 is slightly shortened, and the lower end of the pump 25 is positioned at the bottom of the pail 1. Has reached the predetermined position. In this state, the pump 25 can be operated to feed grease to a desired position.

In this pail can pump, the cylindrical portion composed of the outer cylinder 15 and the inner cylinder 16 for covering the opening of the pail can 1 can be made small, so that the lifting device 14
Thus, the weight of the portion to be raised and lowered can be reduced accordingly. Therefore, the rotational force for operating the lifting device 14 may be small.
Further, since the lower end of the expanding and contracting tubular portion, that is, the lower end of the inner cylinder 16 only descends to the opening at the upper end of the pail 1, there is no such thing as to come into contact with the base 2 and no dust adheres. There is no danger of dust falling into the pail when replacing the pail. The elastic structure of the cylindrical portion is the inner cylinder 16
Is configured to move downward, so that the minute gap between the sliding surfaces is downward, and water droplets do not enter even when used outdoors.

In the above embodiment, a chain is used to prevent the inner cylinder 16 from dropping. However, in some cases, the lower end of the outer cylinder 15 and the upper end of the inner cylinder 16 engage with each other at a position where the inner cylinder 16 is lowered. A small flange-shaped engaging portion or stopper may be provided.

[0016]

As described above, according to the present invention, the cylindrical portion is smaller and shorter than the conventional cover, so that the weight can be reduced, and the lower end of the cylindrical portion can contact the base close to the floor. Since there is no pail, there is obtained an effect that there is no risk of dust entering the pail when changing the pail.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, wherein (a) is a plan view,
(B) is a front view.

FIG. 2A is a vertical sectional front view of an outer cylinder and an inner cylinder of the embodiment, and FIG. 2B is a partially omitted bottom view of an upper plate portion of the embodiment.

FIG. 3 is a vertical sectional front view showing the configuration of the lifting device of the embodiment.

FIG. 4 is a plan view showing the structure of the lifting device of the embodiment, in which the upper half shows the upper surface plate side to be raised and lowered, and the lower half shows the fixed side of the upper end of the column.

FIG. 5 shows a conventional pail can pump, wherein (a) is a plan view and (b) is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pail can 11 Base 12 Top plate 13 Pump device 14 Elevating device 15 Outer cylinder 16 Inner cylinder 25 Pump 50 Edge

Continuation of the front page (56) References JP-A 1-1114600 (JP, U) JP-A 4-40173 (JP, U) JP-A 4-71131 (JP, U) JP-A 63-15398 (JP) , U) Japanese Utility Model 4-40172 (JP, U) Japanese Patent Publication No. 2-55315 (JP, B2) Japanese Utility Model 4-13424 (JP, Y2) Japanese Utility Model 63-17989 (JP, Y2) Japanese Utility Model Akira 36-26822 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) F04B 23/02 F16N 7/16 F16N 19/00 B65D 47/06

Claims (1)

(57) [Claims] 1. A pump device mounted on an upper plate located above a pail can placed on a base is lowered together with the upper plate by an elevating device and mounted on the pail, and the pump device is raised. In a pail can pump configured to replace a pail can, a cover of an opening of the pail can when the pump device is lowered is provided with the upper plate and the pail having an upper end fixed to a lower surface of the upper plate. An outer cylinder having a diameter substantially corresponding to the diameter of the can, and is fitted to this outer cylinder at least at a lower end portion so as to be expandable and contractible so as to be able to cope with at least a difference in height of the pail can. A pail can pump characterized by comprising an inner cylinder having an edge portion that covers an opening edge of the pail can.