JPH027649B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an upright vacuum cleaner, in particular, a cord reel body around which a power cord is wound is disposed above a dust collection chamber, and an electric blower is disposed below. The present invention relates to an upright vacuum cleaner.

Conventional upright vacuum cleaners consist of a suction body in which a rotating brush body is placed inside the suction port, and a main body that stands upright and can rotate freely at the rear of the suction body. However, since it is necessary to make it water-shaped and lightweight for good operability, the compartment is also narrow, and it is not possible to form a sufficient sound-dampening structure around the electric blower, resulting in a large amount of noise. Ta.

In addition, in the case of a type that has a cord reel body with the power cord wound around it at the top of the main body, if it is used with the power cord wound around it, self-heating of the power cord will not dissipate easily. , the disadvantage was that the temperature rise on the surface of the cord near the center was abnormally high.

Furthermore, when performing electrical wiring between the electric blower room and the cord reel room, a type that has a dust collection chamber between the electric blower room and the cord reel room, such as the upright type vacuum cleaner described later. Then, when running electrical wiring through the dust collection chamber, the following problem arises. That is, the dust collection chamber is a space that is touched by hands during maintenance such as garbage disposal, and it is not desirable for safety to provide electrical wiring in that area. In this case, it is necessary to double insulate the wiring. In addition, the dust collection room is a part that has negative pressure during operation and must be airtight, so the entrance and exit of the electrical wiring, that is, the connection between the dust collection room, the cord reel room, and the electric blower room. There was a problem that the structure of this part became complicated as it became necessary to make it airtight.

The present invention has been made in order to solve the problems of the prior art described above, and is designed to reduce noise, and even with a structure having a dust collection chamber between the cord reel chamber and the electric blower chamber, the electric wiring It is an object of the present invention to provide an upright vacuum cleaner that can safely and easily perform the above operations, and can also cool a power cord wound around a cord reel.

The upright vacuum cleaner of the present invention has a structure in which a cord reel chamber that houses a cord winding means, a dust collection chamber that houses a dust collection means, and a compartment that houses a blower and drive means are vertically arranged. The upright type vacuum cleaner is formed of a main body and a suction body disposed so as to be rotatable and protrude horizontally from the bottom of the main body, and the cord is attached to one side of the dust collection chamber. A silencing chamber is formed in which the reel chamber and the compartment are communicated, and a wiring connecting the cord winding means and the blowing and driving means is passed through, and the suction body and the dust collecting means are connected. A duct is provided so that the airflow from the suction body passes through the duct, passes through the dust collection means of the dust collection chamber, and is sent to the compartment, and then a part of the exhaust air is guided to the cord reel chamber through the silencing chamber. It is composed of

Next, an embodiment of an upright vacuum cleaner according to the present invention will be described with reference to FIGS. 1 and 2.

Here, FIG. 1 is a longitudinal cross-sectional view of an upright vacuum cleaner according to an embodiment of the present invention as seen from the front, and FIG. 2 is a cross-sectional view taken along line A to H in FIG. 1.

In the figure, 1 is the main body, 2 is a compartment, 3 is a dust collection chamber, and 4 is a cord reel chamber.

Reference numeral 5 denotes a blower/driving means, 6 and 7 vibration isolating means, 8 a lid, 9 a dust collection means, 10 a holder, 11 an inlet, 12 a power cord, and 13 a cord. Winding means, 14 is a cord opening, 1
5 is a connection terminal portion, 16 is a handle for operation, and 17
1 is a back cover, 18 is a sound deadening material, and 19 is a sound deadening chamber.

In addition, 20 is an exhaust port, 21 is a crossover wire, 22 is,
It is a substantially cylindrical projection, 23 is a mouthpiece, 24 is
The shaft of the blowing and driving means 5, 25 is a rotating belt, 26 is a brush, 27 is a dust scraping means, 28 is a suction port, 29 is a duct, and 30, 31 are a plurality of wheels.

In addition, two pedals are provided at the top of the cord reel chamber 4, one of which is used to operate the electric motor switch of the blower and drive means 5, and the other pedal is used to operate the electric motor switch of the blower and drive means 5.
This is related to the operation of the stopper mechanism of the cord winding means 13.

That is, the main body 1 has a substantially rectangular parallelepiped shape and is roughly divided into a compartment 2 located at the bottom, a dust collection chamber 3 located at the center, and a cord reel chamber 4 located at the top.

In the above-mentioned compartment 2, a blowing/driving means 5 consisting of a blowing/driving motor is placed horizontally via vibration isolating means 6, 7 made of an elastic material such as rubber, and the above-mentioned dust collecting chamber 3 A dust collecting means 9 made of a paper bag or a cloth bag is installed inside the lid by opening and closing the removable lid 8.
is removably locked to the inlet 11 via the holder 10, and the cord reel chamber 4 houses a cord winding means 13 consisting of a cord reel or the like around which the power cord 12 is wound a plurality of times. It is something.

One end of the power cord 12 is led out from a cord opening 14 opened on one side of the cord reel chamber 4, and the other end has a sliding contact type swivel mechanism (not shown). connection end 15 through
is connected to.

In addition, a removable operation handle 16 is attached to the rear wall of the cord reel chamber 4 so that it can be protruded and used as a handle when in use, and can be pulled out when stored in a closet or the like. ing.

A part of the dust collection chamber 3 near the rear wall has a substantially U-shaped protrusion toward the dust collection chamber 3 side, and the back surface is covered with a back cover body 17.
U-shaped (or semicircular) cross section, sealed with
A sound-absorbing material 18 such as polyurethane foam or glass fiber having a thickness of 5 to 10 mm is formed inside the sound-absorbing chamber 19, one end of which is adjacent to the compartment 2, and the other end of which is lined with a sound-absorbing material 18 such as polyurethane foam or glass fiber. , adjacent to the cord reel chamber 4.

The discharge airflow generated by the above-mentioned blower/driving means 5 is mainly discharged from the exhaust port 20 formed in the front wall of the compartment 2, and a part of it is distributed between the silencing chamber 19 and the cord reel. It passes through the chamber 4 and is discharged from the cord port 14.

Thereby, the power cord 12 wound around the cord winding means 13 is cooled.

Further, the connecting wire 21 connecting the above-mentioned connection terminal portion 15 and the blower/driving means 5 passes through the above-mentioned silencing chamber 19.

A substantially cylindrical projection 22 is formed on both outer walls of the compartment 2, and a substantially rectangular suction body 23 is attached to this projection 22.
is rotatably supported.

Inside this suction body 23, the air blowing and driving means 5 is provided.
A dust scraping means 27, such as a cylindrical rotary brush body having brushes 26 flocked on its outer periphery, whose rotation of the shaft 24 is decelerated and rotated via a belt 25, and the dust scraping means 27 scrape up the dust. A duct 29 for guiding dust into the dust collecting means 9 through a suction port 28 is installed inside.

This duct 29 is connected to the dust collection chamber 3 from the back of the main body 1.
The dust collecting means 9 is connected to the dust collecting means 9.

Further, a plurality of wheels 31, 31 are provided at the lower part of the suction body 23 to facilitate horizontal movement.
is rotatably supported.

Next, the operation of the above configuration will be explained.

That is, when the power cord 12 mentioned above is connected to a power source and the blower/driving means 5 is driven, the rotation rotates the dust scraping means 27 via the belt 25 and scrapes the dust on the floor such as the carpet. At the same time, as shown by the arrow in FIG. 2, the dust is sent to the dust collecting means 9 through the suction port 28 and the duct 29,
The filtered airflow passes through the blower and drive means 5, and part of it is discharged from the exhaust port 20 of the compartment 2, and the other part is sent from the compartment 2 to the silencing chamber 19 and the cord reel chamber 4. It passes through the cord and is discharged from the cord port 14.

As described above, according to the present embodiment, a part of the exhaust flow generated by the blower/driving means 5 is introduced into the cord reel chamber 4 through the silencing chamber 19, so that the noise caused by the air flow can be reduced. It is possible. That is, all the exhaust gas generated by the blower/driving means 5 is discharged from the exhaust port 20 of the compartment 2.
Compared to so-called concentrated exhaust, the one in which a part of the exhaust gas is guided to the silencing chamber 19 as in this embodiment can disperse the exhaust flow and reduce the speed of the exhaust flow, which greatly reduces the collision noise of the exhaust flow. Dispersed exhaust has a noise reduction effect.

In addition, with the configuration in which the cord reel chamber 4, the dust collection chamber 3, and the compartment 2 are arranged vertically, the dust collection means 9 of the dust collection chamber 3 is arranged, making use of the long vertical distance. Since the silencing chamber 19 is provided in the duct, the length of the duct can be increased and the sound can be effectively muffled.

Furthermore, with the above sequential configuration, the sound deadening chamber 19
Since the airflow contracted in is guided to the wide cord reel chamber 4, the silencing effect can be strengthened here, and in combination with the above, a remarkable silencing effect can be expected. That is, a part of the exhaust air from the blower/driving means 5 flows (compresses) from the spacious compartment 2 into the narrow silencing chamber 19, and is released from the narrow silencing chamber 19 into the cord reel chamber 4, which has a wide space. By (expansion), there is a noise reduction effect due to compression and expansion.

In addition to the above, it also has the effect of preventing abnormal temperature rise of the power cord 12.

By the way, as a blower and drive means, the power consumption is 550
When using Watsuto's electric blower, the power cord has a core wire cross-sectional area of 0.75 mm ² as specified by JISC3322.
Experiments have shown that if a captire cable is used, and a 5mm polyurethane foam is pasted around the entire circumference within a frame measuring 30mm vertically and horizontally and 280mm long as a sound deadening chamber, the noise reduction effect is ,
It was about 5 phons, and the effect of reducing the surface temperature of the power cord was about 50°C.

In other words, we were able to confirm through experiments that what was 68dB(A) with the conventional model became 64dB(A), and what was 76°C with the conventional model became 26°C. be.

Further, the cord winding means 12 and the blowing/driving means 5
By arranging the crossover wire 21 related to the wiring connecting to the silencing room 19, the user will not touch the crossover wire, so there is no need for double insulation.
In addition to improving safety, wire connections can be made within the sound-deadening chamber, and ease of assembly is also improved.

Furthermore, the wall surface of the silencing chamber 19 on the side of the dust collection chamber 3 is formed integrally with the dust collection chamber, and the back cover body 17 is sealed, so that the dust collection chamber in a negative pressure state and the positive The effect of ensuring airtightness with the silencing chamber under pressure can be obtained.

In summary, according to the present invention, a silencer is provided in the dust collection chamber to connect the compartment housing the electric blower and the cord reel chamber housing the cord winding means around which the power cord is wound. This design not only reduces noise, but also allows electrical wiring to be carried out safely and easily even in structures that have a dust collection chamber between the cord reel room and the electric blower room (compartment). Furthermore, the power cord wound around the cord reel can also be cooled, making it an invention with excellent practical effects.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an upright vacuum cleaner according to an embodiment of the present invention as seen from the front, and FIG. 2 is a sectional view taken along line A-H in FIG. 1. 1... Main body, 2... Compartment, 3... Dust collection chamber, 4...
...Cord reel room, 5...Blower/driving means, 9...
... Dust collection means, 12 ... Power cord, 13 ... Cord winding means, 18 ... Sound deadening material, 19 ... Sound deadening chamber,
23...Sucking body.

Claims (1)

[Claims] 1. A main body in which a cord reel chamber for storing a cord winding means, a dust collection chamber for storing a dust collection means, and a compartment for storing a blower/driving means are arranged vertically, and the main body rotates to the bottom of the main body. An upright vacuum cleaner formed of a suction body disposed to freely protrude in the horizontal direction, the cord reel chamber and the compartment communicating with one side of the dust collection chamber, A silencing chamber is formed through which the wiring connecting the cord winding means and the blowing and driving means passes through, and a duct is provided to connect the mouthpiece body and the dust collection means, so that the airflow from the mouthpiece body can be controlled. The upright type electricity is characterized by being configured such that the exhaust gas is sent through the duct, through the dust collection means of the dust collection chamber, and into the compartment, and then a part of the exhaust is guided through the silencing chamber and into the cord reel chamber. Vacuum cleaner.