JPH02224722A - Electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent trouble and accommodate a power cord in simple way by providing cooling wind paths in the motor part of a blower within a body upper case in such an arrangement as separate from an exhaust passage for suction air, forming part of the cooling wind paths around the upper part of the body upper case, furnishing a power cord winding part, and covering it with an upper cover capable of moving vertically. CONSTITUTION:Cooling air of the motor part 9a of a motor-driven blower 9 intrudes in cooling wind paths 37 from a gap 31 provided in a power cord winding part 29 and cools a power cord 30, a control circuit board 26, and then the motor part 9a to be exhausted thereafter from an exhaust port 32 to outside a cleaning machine concerned. Because the cooling wind paths 37 are separate from an exhaust passage 35 for suction air, suction air containing water does not intrude into the motor part 9a, that prevents deterioration in the insulation and generation of rusts. When the power cord 30 is to be taken up or rewound, an upper cover 7 is moved upward to enlarge the gap between it and an outer case 5, which accomplishes simple performance of taking-up and rewinding.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a vacuum cleaner that collects dust using water stored in a water tank.

(b) Prior art As a technology prior to the present invention, for example, Utility Model Application No. 61-61
Japanese Patent No. 948 discloses a vacuum cleaner that separates dust by blowing suction air containing dust onto water in a water tank. However, even with this conventional technology, the air sucked into the electric blower contains some moisture, and if used for cooling the electric blower, there is a risk that it may cause poor insulation or rust in the electric blower. .

(c) Problems to be Solved by the Invention The present invention provides a vacuum cleaner in which dust is collected using water stored in a water tank, in which an electric blower is cooled without insulation defects, and the cooling air is used to power the electric blower. The purpose of the present invention is to provide a vacuum cleaner in which the cord is also cooled to prevent malfunctions and the power cord can be easily stored.

(d) Means for Solving the Problems The vacuum cleaner of the present invention stores an electric blower in the upper case of the main body with the suction port facing downward, and also has an electric blower connected to the air intake port in the lower case of the main body. A water tank having a communication port and a suction port that communicates with each other is removably housed, and dust is separated by blowing suction air containing dust onto the water stored in the water tank, wherein the upper case of the main body includes: A cooling air passage for the motor section of the electric blower is provided separately from an exhaust air passage for the suction air, and a part of the cooling air passage is formed around the upper part of the main body upper case, and a power cord is wound therearound. It is characterized in that it includes a power cord wrapping part, and the power cord wrapping part is covered with an upper cover that can be moved up and down.

(e) Effect With the above configuration, when the electric blower is operated, the suction air containing dust enters the water tank from the suction port and is blown against the water stored in the water tank, and the dust comes into contact with the water. It is separated from the intake air and collected in water. The suction air from which dust has been separated is drawn into the suction port of the electric blower through the communication port of the water tank, and then discharged to the outside of the vacuum cleaner via the exhaust passage.

On the other hand, the cooling air from the motor of the electric blower cools the power cord wound around the power cord wrapping section, then passes through the motor through the cooling air path, cools the motor, and then flows to the outside of the vacuum cleaner. be discharged. Since this cooling air passage is separated from the suction air exhaust passage, the suction air does not enter the motor section, so that the motor section does not suffer from poor insulation or rust.

Furthermore, the power cord can be wound up and unwound to the power cord winding section by moving the upper cover upward, and then the winding and unwinding operations can be easily performed by moving the upper cover downward.

(f) Example Hereinafter, the vacuum cleaner of the present invention will be explained based on the drawings.

(1) is a vacuum cleaner main body case of a vacuum cleaner, in which a removable main body upper case (2) and a main body lower case (3) are fixed and integrated with a fixing clamp (4).

The main body upper case (2) has an outer case (5) and an inner case (
6) has a double-walled structure, and is provided with an upper cover (7) which can be moved up and down at the upper part, and a bottom plate (8) which serves as a partition wall from the main body lower case (3) at the lower part.

(9) is an electric blower equipped with a cooling fan (10) at the rear, (11) is an air guide tube that covers the electric blower (9), and the air guide tube (11) is connected to the electric blower (9).
It consists of a motor cover tube (12) that covers the motor section (9a) and a fan cover tube (13) that covers the fan section (9b).
An intake port (14) as an intake port communicating with the intake side of b).
). The electric blower (9) is connected to the intake side and exhaust side of the fan section (9b), and the fan section (9b).
9b) and the motor part (9a), respectively, hermetically sealed;
The air guide cylinder (11) is elastically held by the second annular gasket (15) and (16) and accommodated in the air guide *(11), and the air guide cylinder (11) connects the intake port (14) to the bottom plate (8).
The lower part is held by the air guide support annular gasket (18) so as to face downward from the lower opening (17) of the air guide, and is housed on the left side of the center in the inner case (6). Further, the rear part of the motor part (9a) of the electric blower (9) is connected to the outer case (5) through a motor part support tube (19) housing the cooling fan (10) and a motor part support gasket (20). supported on the bottom.

The outer case (5) has a notch (21) at the top of the upper bottom surface.
It has a closed-loop rib (22) with ... in several places,
A cooling air flow hole (23) communicating with the motor support tube (19) is formed in the tube (22).

(24) is a control component storage part formed inside the rib (22), the upper part of which is covered with a partition plate (25) and stores a control circuit board (26) of the electric blower (9). The partition plate (
25) has a rotatable handle (27) and an integral control part cover (28).

(29) is a power cord wrapping portion formed on the outside of the rib (22), covered with the above-mentioned vertically movable upper cover (7), and winds and stores the power cord (30) inside.

When the upper cover (7) slides to the lowest position, the dimension (X) of the gap (31) between the peripheral flange of the upper cover (7) and the upper bottom surface of the outer case (5) is determined by the power cord. (30)
The power cord (30) is made smaller than the diameter dimension (Y) of the power cord (30) to prevent it from falling out when it is stored.

As shown in the sectional view of the main part of the upper cover (7) shown in FIG.
Attach the positioning bin (50) and presser spring (
51) and a holder (52) for mounting them, and positioning holes (54) provided at several locations of the circular rib (53) from which the positioning pin (50) hangs from the upper cover (7).
It can be fixed in any position by locking it to .... (5
5) is the upper cover (7) provided at the lower end of the circular rib (53)
This is the uppermost position defining claw.

The upper cover (7) is urged upward by a spring (60) and is formed at the corner of the upper cover (7), as shown in FIG. The latching claw (62) of the pressing part (61) that has been inserted into the latching hole (
63) and held at the lowest position. In this case, by pressing the pressing portion (61), the locking claw (62) and the locking hole (63) are disengaged, and the upper cover (7) automatically moves upward.

Further, (31) and (32) are an exhaust port and a cooling air exhaust port respectively provided in the outer case (5), and (33) is an integrated particulate filter, which is connected to the fan part (9a) of the electric blower (9).
The suction air coming out from the exhaust side of the fan enters between the air guide tube (11) and the inner case (6) through the outlet (34) of the fan cover tube (13), and goes around the outside of the air guide tube (11). After that, it passes through the integrated fine dust filter (33) and exits the exhaust port (
It passes through the exhaust passage (35) leading to the exhaust port (31).
1).

On the other hand, inside the main body upper case (2), from the gap (31) there is a power cord wrapping part (29) and a control parts storage part (24).
from the cooling airflow population (23) to the motor section (9a
), and further passes through the inside of the air guide cylinder (11) from the motor part (9a), and reaches the cooling air exhaust port (32) via the cooling air passage port (36) of the inner case (6). An air passage (37) is provided separately from the exhaust passage (35), and when the cooling fan (10) is driven, cooling air from the motor part (9a) is supplied to the power cord wrapping part (2).
After cooling the power cord (30) wound around the power cord (30) and the control circuit board (26), the motor unit (9a) is cooled by passing through the motor unit (9a), and then the cooling air exhaust port (
32).

Reference numeral (38) denotes a suction hose connection tube, which is located at the suction opening (39) that can be opened and closed by an opening/closing lid (39a), and has a lower end opening (38a) formed in the bottom plate.

(40) is a circular cup-shaped water tank removably housed in the lower case (3) of the main body, and a cylindrical lower container (42) with an opening at the top that stores water (41) as a dust collection filter.
and a top cover (43) that is removably attached to cover the top opening. A communication port (44) that airtightly communicates with the intake port (14) through the bottom opening (17) of the bottom plate (8) is formed in the center of the upper lid (43), and the connection port (44) is formed in the side portion of the top lid (43). The lower end opening of the tube (38) (
A suction port (45) communicating with 38a) is formed. The suction port (45) is formed so as to pass through the top lid (43) and communicate with the back side, and is further connected to the water tank (45).
40) which opens laterally in the circumferential direction (45a).
)have.

Further, the water tank (40) is arranged such that the central axis (P) of the communication port (44) and the central axis (Q) of the intake port (14) are non-coaxial with each other, and (3
), and in this stored state, the communication port (4)
4) is disposed at a position shifted to the left side of the intake port (14).

(46) is a pre-filter that prevents dust from being sucked into the electric blower (9), and when a large amount of liquid such as water is sucked into the water tank (40), it floats up and enters the communication port (
44) is provided with a float valve body (47) that closes the valve. Furthermore, (48) is an annular wall formed to hang down from the back surface of the upper lid (43).

Then connect the suction hose (not shown) to the suction hose connection tube (3
8) to drive the electric blower (9), suction air containing dust is sucked into the water tank (40) through the suction port (45). At this time, the horizontal outlet (45a) of the suction port (45) is connected to the water tank (40).
) is opened laterally in the circumferential direction, the suction air flows in a vortex and is blown onto the water (41), which causes the water (41) to also rotate in a vortex to form a concave water surface. , dust is separated from the suction air by contact with water (41), and the dust is collected and stored in the water (41).

The suction air from which dust has been separated passes through the pre-filter (46), is sucked into the electric blower (9) through the communication port (44) and the intake port (14), and then passes through the exhaust passage (35).
) and is discharged to the outside of the vacuum cleaner from the exhaust port (31).

On the other hand, the cooling air of the motor part (9a) of the electric blower (9) is supplied to the gap (31) in the power cord wrapping part (29).
) enters the cooling air passage (37) and connects to the power cord (30
) and the control circuit board (26), the motor section (9) is cooled down.
a) to cool the motor section (9a), and then is discharged to the outside of the vacuum cleaner from the cooling air exhaust port (32). Since this cooling air passage (37) is separated from the suction air exhaust passage (35), suction air containing moisture does not enter the motor part (9a), and therefore the motor part (9a) is insulated. It will not become defective and will not cause rust.

Furthermore, when winding and unwinding the power cord (30), when the upper cover (7) is moved upward, the gap between the upper cover (7) and the outer case (5) increases, allowing the winding and unwinding of the power cord (30). Easy to return, then top cover (7)
If the power cord (30) is moved downward, the gap dimension (X) becomes smaller than the diameter dimension (Y) of the power cord, and the power cord (30) is stored in the power cord wrapping part (29).
0) will not spill out. Moreover, the power cord (3
0) is the power cord wrapping part (2) covered with the upper cover (7).
9), the vacuum cleaner has a neat appearance.

(g) Effects of the Invention The present invention is constructed as described above, and in particular, the cooling air passage for cooling air that cools the motor part of the electric blower is separated from the exhaust passage for suction air, so that no suction air flows into the motor part. Therefore, the electric blower will not suffer from poor insulation and rust will not occur.

Furthermore, since the cooling air cools the power cord wound around the power cord wrapping portion, accidents caused by heat generation of the power cord can be prevented.

Further, since the power cord wrapping portion is covered with an upper cover that is vertically movable, the power cord can be easily stored.

[Brief explanation of the drawing]

The drawings all relate to embodiments of the vacuum cleaner of the present invention, and FIG. 1 is a vertical front view, FIG. 2 is a vertical right side view, FIG. 3 is a front view, FIG. 4 is a right side view, and FIG. Figure 2 is a sectional view taken along line V-■, Figure 6 is a sectional view taken along line 2-Vl, and Figure 7 is taken along line 2-■
748 is an explanatory sectional view of the main part, FIG. 9 is a diagram of another embodiment, (A) is an explanatory sectional view of the main part, and (B) is a plan view of the main part. (2)... Main unit upper case, (3)... Main unit lower case, (7)... Upper cover, (29)... Power cord wrapping part, (30)... Power cord, (35)...Exhaust passage, (37)...Cooling air passage, (40)...Cylindrical water tank. Figure 7

Claims (1)

[Claims] (1) An electric blower is stored in the upper case of the main body with the suction port facing downward, and a water tank equipped with a communication port and a suction port that communicate with the intake port can be freely attached and detached in the lower case of the main body. and separates dust by blowing suction air containing dust onto the water stored in the water tank, in which a cooling air passage for the motor section of the electric blower is installed in the upper case of the main body. A power cord winding part is provided separately from the exhaust passage, and forms a part of the cooling air passage around the upper part of the main body upper case and winds the power cord, and the power cord winding part is vertically movable. A vacuum cleaner characterized in that it is covered with a possible top cover.