JPH02264620A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To facilitate a handling and, moreover, to prevent a partial wear from being generated to a rotary brush, etc., by arranging a motor at one edge side at right or left toward the sliding direction of a power brush, and providing a power transformer or battery for the motor at the other edge side. CONSTITUTION:The cleaner is equipped with a main body 2 in which a suction port 24 and a discharge port are provided and a motor fan is arranged inside, a connecting pipe 4 to be attachably and detachably connected to the suction port 24, and a power brush 5 equipped with a rotary brush 58 to be attachably and detachably connected to the other edge of the connecting pipe 4 and to be rotated with a built-in motor. A motor 56 is arranged at one edge side at right or left toward the sliding direction of the power brush 5, and simultaneously, a power transformer 54 or battery for the motor 56 is provided at the other edge side. As a result, the handling is facilitated, and moreover, the partial wear cannot be generated to the rotary brush.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a household vacuum cleaner.

[Prior Art] Generally, a floor brush that rotates a rotary brush using the power of a built-in electric motor is called a power brush. Vacuum cleaners that use this method are suitable for cleaning the vacuum cleaner as the rotary brush rotates with a powerful torque.

However, electric motors are composed of an iron core and multiple windings, and have the disadvantage of being heavy due to their structure.

For this reason, when a power brush has a built-in electric motor, the weight of the left and right sides of the power brush often becomes uneven.

Conventional vacuum cleaners tend not to have been given special consideration to weight balance. For this reason, when the power brush is raised or lowered, it tilts, which not only makes handling inconvenient, but also causes uneven contact pressure with the floor surface, resulting in partial wear of the brush and the like.

On the other hand, in conventional vacuum cleaners, the electric blower inside the main body is set to 0N-OPPt using a hand switch, and air is sucked through the air intake port and dirt is sent to the dust collection bag. However, during blow operation, the electric blower was turned on and off using a power switch provided on the main body. Therefore, although the handy switch is useless, it is necessary to switch the power switch each time, which causes problems such as extremely troublesome handling operations.

[Problems to be Solved by the Invention] The present invention has been made by focusing on such a conventional vacuum cleaner. It is an object of the present invention to provide a vacuum cleaner which is easy to handle and does not cause partial wear on a rotary brush or the like. In addition, it has a built-in battery for driving the rotary brush to improve weight balance, and eliminates electrical wiring to simplify the structure.

Furthermore, the present invention is configured so that the blow operation can be turned on and off using a hand switch, similar to the suction operation. Further, it is an object of the present invention to provide a vacuum cleaner that is free from breakdowns due to local wear and is easy to handle, using the above-mentioned configurations.

[Means for Solving the Problem] According to the first means for achieving the above object of the present invention,
For example, an electric motor is placed on the right side of the power brush, and a power transformer or battery is correspondingly installed on the left side. The positions of each power brush are selected so that the weight of the left and right sides of the power brush is balanced.

According to a second means for achieving the object, the vacuum cleaner is provided with a jack similar to the jack of the intake port near the central exhaust port of the main body.

[Function] The power brush based on the first means for achieving the object of the present invention is connected to the main body of the vacuum cleaner via a connecting pipe. Then, when you lift the power brush by the grip of the connecting pipe and the extension pipe, the weight on the left and right sides is balanced, so you can lift it horizontally. Also, when you lower the power brush onto the floor and slide it back and forth, the bottom surface evenly contacts the wooden floor or carpet floor to clean the floor.

Also, pull out the connecting pipe from the intake port of the main unit and replace it with the central exhaust port side. When the connecting pipe is replaced, the plug of the connecting pipe is inserted into the jack of the central exhaust port, and the hand switch is connected to the electric blower's power circuit. As a result, the ON-OFF operation of the blow operation can be switched using the hand switch.

[Embodiments of the invention]

FIG. 1 is an explanatory diagram of the configuration of an embodiment of the present invention, FIG. 2 is a cross-sectional explanatory diagram of the main body, and FIG. 3 is a perspective explanatory diagram of the rear of the main body.

In FIGS. 1 to 3, (1) is a floor surface showing a wooden floor or a carpeted floor, and (2) is the main body of a vacuum cleaner placed on the floor surface (1). (21) is arranged inside the main body (2),
This is an electric blower consisting of a fan (22) and an electric motor (23).

(24) is an inlet, (25) is a centralized exhaust port formed by a single hole, and (26) is a distributed exhaust port consisting of a plurality of holes. The exhaust gas discharged from both exhaust ports (25) and port 26) can be selectively switched depending on a normal suction operation or a blow operation to be described later. (27) and (28
) are jacks of the same structure provided near the intake port (24) and the central exhaust port (25), respectively. (31) is a dust collection bag placed inside the inlet (24), (32) and (33) are filters, (34) is a power cord wound on a reel, (35) and (3B) are wheels , (37) is a tick display device that displays tick information.

(4) is a connecting pipe. (41) is a flexible hose in the connecting pipe (4), and (42) is a connection portion provided on the base side of the hose (41). The connecting portion (42) is provided with plugs (43) to be inserted into the jacks (27) and (28), and these plugs (43) and the like constitute a connector (44). (45) is a "dog-shaped" shaped grasping section attached to the tip side of the hose (41), and (46) is a hand switch provided on the grasping section (45). (48) is an extension pipe connected to the tip of the hose (41), and (49) is a wiring duct provided in the length direction of the extension pipe (48).

FIG. 4 shows an electrical connection diagram of the connecting pipe (4). In the figure, (1) is the power transformer, (cl) and (c2) are the negative and secondary windings of the power transformer (1), and (S) is ON/OFF operation by the excitation current of the secondary winding (c2). The relay switch (r) is a load such as an electric motor with a built-in power brush, which will be explained next.

(5) is a power brush, which is connected to the main body (
2). The structure of the power brush (5) is shown enlarged in FIG. 5.6.

In Figures 5 and 6, (5I) is a case, (52) is a bumper, and although the case (51) is not shown, the upper and lower parts are separated, and the upper front surface is removable. . (53) is an elbow provided in the center of the case (51), the pipe end protruding outward fits into the tip of the extension pipe (48), and the suction opening in the case (51) gradually expands. Both sides of the mouth are supported by pivots. And power brush (5
) for the case (51) part, the elbow (5
It is designed to be able to "swing" like an arrow using the pivot point in 3) as a fulcrum. This "oscillation" action allows the power brush (5) to slide back and forth while keeping the bottom surface parallel to the floor (1) at all times.

(54) and (55) are electric circuit sections consisting of a power transformer and a printed board installed on the -blade side of the elbow (53);
56) is a small electric motor placed on the other side.

(57) is a belt, (58) is a rotary brush, (59)
) is the opening. By arranging the power transformer (54) and the electric motor (5B), which have approximately the same weight, at appropriate positions on both sides of the elbow (53), the power brush (54)
) is configured to balance the weight on the left and right sides of the X-X plane at the center in the sliding direction.

A floor detector (60) indicated by a broken line in FIG. 6 is a floor detector using light, which is provided near the opening (59) and uses a known light emitting diode and photodiode.

The output end of the floor surface detector (60) is connected to a drive circuit of an electric motor (56) via an electric circuit section (55). When the power brush (5) is on a hard and flat floor (1) such as a wooden floor or tatami floor, the electric motor (56) stops and the amount of light received by the photodiode decreases or the optical path is blocked. The electric motor (5B) is set to rotate at high speed.

Note that (A) is an air path showing the flow of air as the electric blower (21) is driven.

The operation of the vacuum cleaner of the present invention configured as described above will be explained next.

Insert the power cord (34) plug into the ACloo V outlet and then turn on the hand switch (4B).
The relay switch (S) is turned on and the electric motor (23) inside the main body (2) rotates. The electric blower (21) is driven by the rotation of the electric motor (23), and air is sucked in from the suction port (24) side and then exhausted to the distributed exhaust port (26) side as shown by the arrow (A).

Now, place the power brush (5) on the floor (1) and
When sliding back and forth along the
The gas is sucked in from the opening (59) through the gap formed between the gas and the floor (1).

The inhaled dust flows along the air path shown by the arrow (A) to the elbow (
53) to the dust collection bag (3) of the main body (2) via the connecting pipe (4).
1) Dust is collected inside. After dust collection, the exhaust air is further filtered (
32) Particularly in 33), minute components of dust are captured, and the filtered clean air is discharged from the dispersion exhaust port (26).

At this time, the floor detector (60) is working and the electric motor (5
6), the drive current does not flow, and the rotation of the rotary brush (58) is stopped.

Next, when the floor surface (1) changes from a wooden floor or a tatami floor to a carpeted floor,
A floor surface detector (60) detects that the floor surface (1) is a wiping surface. As a result, a driving current is applied to the electric motor (56) through the electric circuit section (55) and the belt (56) is driven.
7), the rotary brush (58) rotates. The rotary brush (58) is rotated by the strong rotational torque applied from the electric motor (56), and the dust accumulated between the bristles on the brush is knocked out, and the dust collecting bag in the main body (2) is removed in the same manner as described above. (31). In this way, cleaning is performed that is appropriate for the type of floor surface (1).

In this case, the weight of the power brush (5) on both sides of the XX plane is approximately equal L<, so the grip of the connecting pipe (4)
The J section (45) and the extension vibrator (48) will not tilt when you hold and lift them. You can also use the power brush (
5) When it is lowered onto the floor surface (1) and slides, it makes contact with the same pressure, so there is no possibility of partial wear of the contact surface etc. even after long-term use.

FIG. 7 shows another embodiment for achieving the first object of the present invention, in which the power transformer (54) and the electric circuit section (54) shown in FIG.
55), a battery (6B) as shown is arranged. The battery (66) is also a relatively heavy electrical component, and is suitable for weight balance with the electric motor 56). In particular, secondary batteries (6G) such as nickel-cadmium batteries (nickel-cadmium batteries) that can be recharged and used repeatedly are used here, and the charging/discharging terminals are automatically set by the adapter connected to ACloo V. It is now possible to switch to According to this embodiment, not only the left and right weights of the power brush (5) are balanced, but also the power wiring for the electric motor (5G) can be omitted.

[Blow operation operation]

When cleaning the inside of a house with a vacuum cleaner, the dust is collected by suction operation using the suction power of the 7-stroke blower (21). However, when blowing away dust from shoji frames or dirt that has accumulated in narrow gaps, a blow operation using exhaust air is used.

When performing a blow operation, the connection part (42) of the hose (41) connected to the suction port (24) of the main body (2) is pulled out during the suction operation. Replace the pulled out connection part (42) with the central exhaust port (25) shown in FIGS. 2 and 3.

With this replacement, the plug (43) and jack (28)
) via the connector (44) consisting of the hand switch (
46) is connected to the power supply circuit of the electric blower (21).

At the same time, the central exhaust port (25) is opened and the port (4■
) is directly connected to the electric blower (21), and the distributed exhaust port (2G) is closed. Then, insert the blow nozzle into the grip part (45) of the hose (4I) and turn it on and off using the hand switch to directly connect the electric blower (21).
The powerful airflow can blow away dust and debris from shoji frames, etc.

In this case, generally the electric motor (23) of the electric blower (21)
A motor equipped with carbon brushes for rectification is used. For this reason, carbon powder often blows out from the central exhaust port (25) and stains the floor surface (1) and the like. However, here, since a brushless motor is used as the electric motor (23), there is no need to worry about dirt from carbon powder.

In addition, in the above-mentioned embodiment, the plug (43) and the jack (2
A), Although the connector (44) consisting of (2g) is illustrated and explained as a plug-in type, when the connecting part (42) is inserted into the suction port (24) and the discharge port (25) side,
The connecting portion (42) side may be rotatable and may also be configured with a contact type connector that maintains electrical connection.

[Effects of the Invention] As described above, according to the present invention, the following effects can be expected.

(1) A vacuum cleaner was constructed in which a motor was disposed at one end of the power brush, and a power transformer or battery for the motor was provided at the other end. As a result, it is possible to prevent tilting of the power brush due to an imbalance in the left and right weights, partial wear of the row rerun, etc. In addition, if a secondary battery is built-in, the partial rq of the rotary brush as mentioned above can be
In addition to being able to prevent wear and tear, there is also the advantage that there is no wiring for the power supply supplied to the power brush, resulting in a simple configuration and low manufacturing costs.

(2) A vacuum cleaner was constructed in which a connector for a hand switch commonly connected to the suction port and the discharge port was provided near the insertion portion of the main body to which the connecting pipe was connected.

Therefore, the blow operation can be changed with a hand switch, so it is easy to operate. In particular, since a brushless motor is used as the motor for the electric blower, carbon powder is not discharged, keeping the indoor air clean at all times, and preventing floor surfaces from becoming dirty.

Therefore, according to the present invention, it is possible to realize a vacuum cleaner with a simple configuration and various features such as ease of operation.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the configuration of an embodiment of the present invention, FIG. 2 is a cross-sectional explanatory diagram of the main body, FIG. 3 is a perspective explanatory diagram of the rear of the main body, and FIG. 4 is an explanatory diagram showing electrical connections of connecting pipes. FIG. 5 is a perspective explanatory view of the power brush with a part thereof opened, FIG. 6 is an explanatory top view showing the internal structure of the power brush, and FIG. 7 is an explanatory view of another embodiment of the present invention. In the figure, (1) is the floor surface, (2) is the main body, (4) is the connecting pipe, (5) is the power brush [floor brush], (23)
is the electric motor, (24> is the intake port, (25) is the central exhaust port,
(27), (2g) is a jack, (37) is a tick indicator, (43) is a plug, (44) is a connector, (4B
) is a hand switch, (60) is a floor detector, and (6B) is a battery. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A main body with an inlet and an outlet and an electric blower inside, a connecting pipe detachably connected to the inlet, and a built-in electric motor detachably connected to the other end of the connecting pipe. A power brush equipped with a rotating rotary brush is provided, the electric motor is disposed at one end of the left and right in the sliding direction of the power brush, and a power transformer or battery for the electric motor is provided at the other end. A vacuum cleaner characterized by: (2) A main body with an inlet and an outlet and an electric blower arranged therein, a hand switch for opening and closing the drive circuit of the electric blower, and one end of which is detachably inserted into the inlet and the outlet. A vacuum cleaner comprising: a connecting pipe to which the vacuum cleaner is connected, and a connector for a hand switch commonly connected to the suction port and the discharge port is provided near the insertion portion of the suction port and the discharge port. .