JPH0317818Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a floor cleaning machine that supplies detergent liquid in a detergent tank to a rotating brush to clean the floor surface, and collects the dirty water after cleaning into a collection tank. In particular, the invention relates to a hand-push or self-propelled floor cleaning machine in which a detergent tank and a recovery tank are disposed above a battery.

Prior Art In conventional floor cleaning machines of this type, one end of a supply hose is connected to a communication hole provided on the bottom of a detergent tank above a battery, and the other end of this supply hose is connected to a rotating brush. The detergent tank is pivotally connected to the frame so as to be tiltable.

Problems that the invention aims to solve In the conventional floor washing machine mentioned above, when inspecting or replacing the battery, which is usually done every 2 to 5 hours, the detergent tank must first be tilted to drain the detergent solution inside. Not only that, but the operation is extremely troublesome and requires a lot of time and force, and the detergent tank gets in the way, making it difficult to replace the battery and requiring a lot of time to inspect and replace the battery. Additionally, the detergent tank could not be taken out from the frame, making it difficult to clean the inside of the detergent tank.

Means for Solving the Problems In order to solve the above problems, the floor cleaning machine of the present invention has a battery mounted on a frame that can move on the floor, and a detergent tank connected to a rotating brush above the battery. In a floor cleaning machine equipped with a collection tank connected to a squeegee, a connecting tank that can communicate with the rotating brush is provided on the frame below the detergent tank, and the detergent tank and the collection tank are connected to the frame. The connecting tank is placed so as to be freely removable and is provided with communication holes facing each other on the top surface of the connecting tank and the bottom surface of the detergent tank, respectively, and one of the communication holes has a joint that can be fitted in and removed from the other in a watertight manner. A flexible discharge hose capable of discharging the detergent liquid is connected to the connecting tank, and the distal end of the discharge hose is made of a transparent material, and the detergent tank is connected along the side of the frame. It is characterized by being raised up to the height of the upper part and detachably held on the frame to serve as a quantity detection hose.

Function When the detergent tank is placed on the frame, the communication hole on the bottom of the washing tank is watertightly communicated with the communication hole on the top of the connection tank, and the detergent liquid in the detergent tank enters the discharge hose. The amount can be visually detected by the amount detection hose part.
On the other hand, when inspecting or replacing the battery,
When the quantity detection hose part of the discharge hose is removed from the frame and lowered, the detergent liquid can be quickly discharged through this quantity detection hose. After that, when the detergent tank is lifted from above the frame, the joint pipe provided in one of the communication holes comes out from the other communication hole, and as a result, the detergent tank can be taken out from above the frame. Also, lift the collection tank and remove it from the frame. Therefore, the upper part of the battery is largely opened, and the battery can be inspected and replaced easily and quickly.

Embodiment Next, an embodiment of the present application will be described based on the drawings. The drawing shows a battery-type walk-behind floor cleaning machine. A pair of left and right front wheels 2, 2 and a single rear wheel 3 are rotatably supported on a frame 1 of this floor washing machine, and these front wheels 2, 2 and rear wheel 3 move the floor surface 4.
It is designed so that it can be run on top. The frame 1 consists of a box-shaped first frame 5 with an open bottom and a second frame 6 fixed to the rear surface (right side in FIG. 2) of the first frame 5 and raised upward. configured, its second frame 6
It is formed into a rectangular tube shape with open top and bottom sides. A hand handle 7 is fixed to the upper rear surface of the second frame 6. Above first frame 5
The upper surface 5a has a battery storage recess 8 in the center.
is formed, and a plurality of batteries 9 are placed and stored in the battery storage recess 8 so as to be removable upward. Further, the first frame 5 has an upper surface 5a located in front of the battery storage recess 8.
A pair of left and right positioning pins 10, 10 are provided to protrude upward. The second frame 6 is formed with a continuous mounting surface 6a at the same height as the upper surface 5a of the first frame 5.
A pair of left and right positioning holes 11, 11 are formed in the lower part of the front wall 6b of the second frame 6 rising from the rear end a. The upper surface 5a of the first frame 5
A plate-shaped tank tray 12 is removably mounted and fixed on the mounting surface 6a of the second frame 6. The tray main body 13 of this tank tray 12 has a lower part of the recovery tank 14 and a detergent tank 1 on its upper side.
Fitting recesses 13a, 13 in which the lower part of 5 can be fitted and placed
b is formed, and a pair of front and rear leg pieces 16, 17 are provided protruding from the lower surface of the tray body 13, as shown in FIG. This front leg piece 16 has engaging holes 18, 1 that can be fitted into the positioning holes 10, 10.
8 is formed on the rear leg piece 17, and engagement pins 19, 19 protruding forward are connected to the positioning holes 11, 1.
It protrudes so that it can be fitted into 1. The tank tray 12 has an engaging pin 1 as shown in FIG.
The leg piece 17 is placed on the mounting surface 6a with the 9 and 19 fitted into the positioning holes 11 and 11, and the engagement holes 18 and 18 of the leg piece 16 are fitted into the positioning pins 10 and 11, respectively.
The leg piece 16 is placed on the upper surface 5a while being fitted into the leg piece 10. A collection tank 14 is fitted and placed in the fitting recess 13a of the tank tray 12 so as to be freely removable upward. A large inspection hole 20 is formed in the center of the upper surface of the recovery tank 14 so that the inside of the recovery tank 14 can be inspected and cleaned. Further, a discharge hole 21 is formed at the lower side of the recovery tank 14, and a hose joint 22 is fixed to the discharge hole 21 portion. The base of a discharge hose 23 made of a bellows hose is fitted into the hose joint 2. The distal end of the discharge hose 23 is removably fitted into a holding part 24 provided on the upper part of the recovery tank 14. Next, a detergent tank 15 is fitted and placed in the fitting recess 13b of the tank tray 12 so as to be freely removable upward. This detergent tank 1
5 has a large supply hole 25 formed in its upper surface, which is normally closed with a cap 26. A communication hole 27 is formed in the bottom of the detergent tank 15 as shown in FIG.
8 is fitted. At the bottom of the detergent tank 15 is a joint pipe 29 that protrudes downward into the communication hole 27.
is fixed.

Next, the first frame 5 below the communication hole 27
A connecting tank 30 is fixedly disposed at.
A communication hole 31 is formed on the upper surface of the connection tank 30 at a position opposite to the communication hole 27, and an annular packing 32 is attached to the inner periphery of the communication hole 31 by a packing retainer 33. The hole 32a of the annular packing 32 is formed so that the joint pipe 29 can be fitted in and removed from the hole 32a in a watertight manner. A valve case 36 of a flow rate regulating valve 35 is fitted into a valve fitting hole 34 on the bottom surface of the connection tank 30 . The lower end of the valve case 36 is closed with a closing body 37, which is fixed to the first frame 5 via a bracket 38. As shown in FIG. 6, the upper end of this valve case 36 has a valve body 39 fitted therein so as to be able to move up and down while being prevented from rotating.
It is designed to be opened and closed by. The valve body 39 has a plurality of communication grooves 39a, 39a on its outer periphery, and is fixed to a rod 40 which is urged downward by a spring 41. The valve case 36 is crimped to the upper end of the valve case 36 over its entire circumference.
It is designed to cover the upper end of the. A plurality of (two in the drawing) communicating pipes 4 are provided on the side surface of the valve case 36.
2, 42 are fixed to each other, and these communication pipes 42, 4
One end of supply hoses 43, 43 is connected to 2. These supply hoses 43, 43 are connected to a pair of left and right rotating brushes 44, 44. The communication pipes 42, 42 are connected to the communication groove 39a of the valve body 39,
39a. The lower end of the rod 40 is opposed to the actuating portion of a cam lever 45 pivotally connected to the bracket 38, and the cam lever 45 is moved counterclockwise in FIG. It is designed to be pushed up when rotated. Further, a discharge pipe 48 is fixed to the lower side surface of the connecting tank 30, and one end portion of a flexible discharge hose 49A made of a transparent material (including a non-transparent material) is connected to the discharge pipe 48. This discharge hose 49A passes under the first frame 5 and is led to the second frame 6 side. The distal end portion of the discharge hose 49A is raised along the side surface of the second frame 6 to the height of the top of the detergent tank 15, and is detachably held by the second frame 6 to form the amount detection hose 49. . A small diameter portion 50a of an engagement tube 50 is connected to the tip of the quantity detection hose 49, as shown in FIGS. 8 and 9. A large-diameter fitting portion 50b is formed on the outer periphery of the engagement tube 50, and this fitting portion 50b is removably held by a holder 51 attached to the side surface of the upper end of the second frame 6. There is. Further, a handheld piece 50c is fixed to the fitting portion 50b. This holder 51 includes a mounting plate 52 fixed to the side surface of the second frame 6,
It consists of a closing plate 53 extending approximately horizontally from the upper end of the mounting plate 52 and an engaging plate 54 extending approximately horizontally from the lower end of the mounting plate 52. A fitting groove 54a is formed into which the portion 50a can fit and the fitting portion 50b cannot fit. The distance between the closing plate 53 and the engaging plate 54 is set to be slightly smaller than the length of the engaging portion 50b of the engaging tube 50, and the interval between the closing plate 53 and the engaging plate 54
It is configured to be expandable by elastic deformation.
Further, the distal ends of the closing plate 53 and the engaging plate 54 are connected to the fitting portion 5.
0b is widened so that it can be easily fitted. A small air hole 53a is formed in the closing plate 53 at a position facing the fitting groove 54a.

Next, a vacuum motor 55 is attached to the rear part of the first frame 5, and one end of a suction hose 57 is connected to a suction pipe 56 of the vacuum motor 55, as shown in FIG. A connecting plate 58 projecting diagonally rearward is integrally formed at the upper end of the front wall 6b of the second frame 6, and the other end of the suction hose 57 is connected to one connecting pipe 59. Also, at the bottom of the first frame 5 there is a skewer 6.
1 is mounted so as to be movable up and down as is well known, and one end of a recovery hose 63 is connected to recover the squeegee 61 as shown in FIG. The other end of the recovery hose 63 is connected to the connecting pipe 60. A recovery tank 14 is provided at the upper edge of the connection plate 58.
A lid body 64 that can open and close the inspection hole 20 is rotatably screwed on. As shown in FIG. 2, this lid body 64 is provided with a suction duct 65 and a recovery tank 66 that open into the recovery tank 14 in a closed state. This suction duct 65 and recovery duct 6
6 is opened at the base of the lid 64 so as to communicate with the connecting pipes 59 and 60, respectively. The above lid body 6
4 is adapted to be received by a stopper 67 of the second frame 6, as shown in FIG. 10, when it is opened to the maximum extent.

When cleaning the floor surface 4 with the floor cleaning machine having the above configuration, first the frame 1 is cleaned as shown in FIG.
After the tank tray 12 is placed and fixed on top, the empty recovery tank 14 and detergent tank 15 are fitted and placed on the fitting recesses 13a and 13b of the tank tray 12, and then the lid body 64 is closed. . When the lid body 64 is in the closed state, the suction duct 65 and the connecting pipe 59 and the recovery duct 66 and the connecting pipe 60 are watertightly communicated with each other. Further, by placing the detergent tank 15 on the tank tray 12, the joint pipe 29 is fitted into the hole 32a of the annular packing 32 in a watertight manner. At this point, the fitting part 50b of the locking tube 50 attached to the other end of the quantity detection hose 49 is fitted into the fitting groove 54a of the holder 51 and locked, as shown in FIG. It is elastically held by the plate 54 and the closing plate 53, and at the same time, the outlet of the locking tube 50 is closed by the closing plate 53. Also, the flow rate adjustment valve 3
The valve body 39 of No. 5 is lowered by the spring 41 so that the valve seat 39b is pressed against the upper end of the valve case 36, and communication between the inside of the connection tank 30 and the supply hose 43 is cut off. Next, in the above state, detergent liquid is supplied into the detergent tank 15 from the supply hole 25.
As a result, the detergent liquid in the detergent tank 15 is transferred to the communication hole 2.
After being supplied into the connection tank 30 from 7, it is supplied into the discharge hose 49A, and enters the amount detection hose 49 up to the same height as the detergent liquid in the detergent tank 15. In this case, since the amount detection hose 49 is made of a transparent material, the amount of detergent solution in the detergent tank 15 can be known by checking the amount of detergent solution in the amount detection hose 49. Therefore, it is possible to know in advance that the detergent liquid in the detergent tank 15 will run out during floor cleaning work, and it is possible to prevent the work of running out of detergent liquid. Also, as described above, the detergent tank 15
If the detergent solution is fully supplied into the tank 15, the detergent solution shakes in the detergent tank 15 when the floor washer is transferred, and the detergent solution in the amount detection hose 49 tries to rise above the tip of the hose. Since the outlet of the locking tube 50 attached to the tip of the detection hose 49 is blocked by the closing plate 53 of the holder 51, the amount detection hose 4
Even when the height of the tip of the detergent tank 9 is placed at a place as low as the upper part of the detergent tank 15, the detergent liquid can be prevented from flowing out from the outlet of the locking pipe 50, and the detergent solution can be prevented from flowing out from the outlet of the locking pipe 50. 53a is only slightly wet.

Next, operate the operation switch (not shown) to operate the vacuum motor 55, rotate the rotary brushes 44, 44, and also operate the flow rate adjustment handle 4.
6, the valve body 39 of the flow rate regulating valve 35 is raised. As the valve body 39 rises, the detergent liquid in the connection tank 30 flows through the communication grooves 39a and 3 of the valve body 39.
9a into the supply hoses 43, 43,
It is supplied to left and right rotating brushes 44, 44, respectively. Therefore, the rotating brushes 44, 44 clean the floor surface with their detergent liquid, and in this state, by holding the handle 7 and moving the floor cleaning machine, a desired floor surface 4 can be cleaned. The above rotating brush 4
4, 44 can be increased or decreased by adjusting the flow rate adjustment handle 46.
On the other hand, the vacuum motor 55 sucks the air inside the recovery tank 14 through a suction hose or the like, and makes the inside of the recovery tank 14 a negative pressure. As a result, a suction force is applied to the squeeuge 61 via the recovery hose, etc., and the sewage and garbage (hereinafter referred to as sewage, etc.) on the floor surface 4 after cleaning is sucked together with air, and is collected via the recovery hose, etc. It is sucked and collected into the tank 14. Therefore, the floor surface 4 after the squeegee 61 has passed is cleanly cleaned. Next, when it is desired to discharge the collected wastewater etc. into the collection tank 14, after stopping the operation of the vacuum motor 55, the collection tank 14 is
The distal end of the discharge hose 23 is detached from the holding part 2 without taking it out, and the discharging hose 23 is stretched to lead the distal end to a wastewater container (for example, a bucket) or the like. As a result, sewage and the like in the recovery tank 14 are directly discharged into the sewage container through the discharge hose 23. The above-mentioned sewage disposal work normally needs to be done every 20 to 40 minutes, but this work can be done easily as described above.

Next, when it is desired to inspect or replace the battery 9, the dirty water in the collection tank 14 is first discharged as described above, and the detergent liquid in the detergent tank 15 is also discharged. To discharge this detergent liquid, connect the locking tube 50 at the tip of the amount detection hose 49 to the fitting groove 54 of the holder 51.
This can be done easily and in a short time by removing the quantity detecting hose 49 from A and lowering the tip of the quantity detecting hose 49 and guiding it to a suitable container. Next, as shown in FIG.
is rotated to the maximum extent toward the opening side and supported by the stopper 67, and then the collection tank 14 and the detergent tank 15 are
are lifted upward and the collection tank 14 and detergent tank 15 are taken out from above the tank tray 12. In this case, since the discharge hose 23 of the recovery tank 14 is held by the recovery tank 14 itself, the recovery tank 14 can be immediately taken out from above the frame 1. In addition, since the joint pipe 29 of the detergent tank 15 is removably fitted into the hole 32a of the annular packing 32, the detergent tank 15 can be immediately taken out from above the frame 1 by simply pulling out the joint pipe 29 from the hole 32a. . Thereafter, the front end of the tank tray 12 is lifted to remove the engagement holes 18, 18 from the positioning pins 10, 10, and then the tank tray 12 is moved forward to remove the engagement pins 19, 19 from the positioning holes 11, 11. Let tank tray 1
2 from above frame 1. As a result, the upper part of each battery 9 is largely opened, and the battery 9
The looseness of the wiring and the amount of charge can be easily checked from three sides of the battery storage recess 8, and the battery 9 can be easily removed by lifting it upward. After inspecting or replacing the battery 9, first place and fix the tank tray 12 on the frame 1 by reversing the above procedure, and then attach the tank tray 12 to the fitting recesses 13a, 13b.
The recovery tank 14 and the detergent tank 15 are placed and fixed on the tank, and the lid 64 is then closed as shown in FIG. Generally, the battery 9 is inspected every 2 to 5 hours, and the inspection work can be done easily.
It is required to be able to perform the process quickly, and in this embodiment, it can be performed easily and quickly as described above.

Note that the present application is not limited to the above-mentioned embodiments, and for example, a joint pipe projecting upward may be provided in the communication hole portion of the upper surface of the connection tank, and an annular packing may be provided in the communication hole portion of the detergent tank. Further, the discharge hose may be constructed of a transparent material only for the amount detection hose portion, and the other portion may be constructed of a metal pipe. Furthermore, the communicating hole of the detergent tank and the communicating hole of the connecting tank are opened to each other by inserting joint pipes, respectively.
An on-off valve may be provided that closes each other when the joint pipe is removed, so that the detergent tank can be taken out from the frame even if some detergent liquid is contained in the detergent tank.

Effects of the invention As described above, in this invention, even if the detergent tank and recovery tank are arranged above the battery mounted on the frame, when inspecting or replacing the battery, the detergent The tank and recovery tank can be taken out from above the frame, leaving the area above and around the battery largely open, making it easy to inspect and replace the battery. In that case, even if a large amount of detergent remains in the detergent tank, the amount detection hose part of the discharge hose can be removed from the frame and lowered to quickly drain the detergent in the detergent tank into an appropriate container. As a result, the detergent liquid in the detergent tank can be discharged quickly, and the time required for battery inspection and replacement can be shortened. Furthermore, when inspecting or cleaning the detergent tank or recovery tank, the detergent tank or recovery tank can be taken out from the frame, making inspection and cleaning of the detergent tank or recovery tank simple and quick. Further, since a portion of the discharge hose constitutes the amount detection hose, a dedicated detection device for detecting the amount of detergent liquid can be omitted and the overall configuration can be simplified.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is an enlarged sectional view taken along the - line, FIG. 2 is a side view of the floor cleaning machine,
Figure 3 is a rear view, Figure 4 is a plan view, Figure 5 is a partial cross-sectional view of the tank tray, Figure 6 is an enlarged sectional view taken along the - line, and Figure 7 shows the operation of the flow rate adjustment valve. FIG. 7 is an enlarged cross-sectional view of the main part, FIG. 7 is an enlarged cross-sectional view along the - line, FIG. 9 is a plan view of FIG. 8, and FIG. 10 is an explanatory diagram showing a state in which the battery is taken out. 1...Frame, 9...Battery, 14...
Recovery tank, 15...Detergent tank, 27...Communication hole, 29...Joint pipe, 30...Connection tank, 31
...Communication hole, 44...Rotating brush, 49A...Discharge hose, 49...Quantity detection hose, 61...Squeeze.

Claims (1)

[Scope of utility model registration request] In a floor cleaning machine, a battery is mounted on a frame movable on the floor, and above the battery there is a detergent tank connected to a rotating brush and a recovery tank connected to a squeegee, below the detergent tank. A connecting tank that can communicate with the rotating brush is provided in the frame, and the detergent tank and the recovery tank are placed on the frame so that they can be taken out upwardly, and the connecting tank is provided with a connecting tank that faces the upper surface of the connecting tank and the bottom surface of the detergent tank. Each hole is provided, one of these communication holes is provided with a joint pipe that can be fitted in and removed from the other in a watertight manner, and a flexible discharge hose capable of discharging the detergent solution is connected to the connecting tank. death,
The distal end portion of the discharge hose is made of a transparent material, raised along the side of the frame to the height of the top of the detergent tank, and is detachably held by the frame to serve as a quantity detection hose. floor cleaning machine.