JPS58146322A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a vacuum cleaner which is provided with a dust collecting section in the front part and has an electric blower, a cord reel, etc. installed in the rear thereof, and is particularly aimed at reducing noise caused by the exhaust air of the electric blower. This relates to a sound deadening structure.

Generally, this type of vacuum cleaner has a structure in which the exhaust air from the electric blower is discharged outside from the exhaust port on the rear end of the vacuum cleaner body, so there is a gap between the electric blower located at the rear and the exhaust port. The length of the connecting exhaust passage is short, and there is a limit to the reduction in exhaust air noise due to the shape of the exhaust passage or the sound-deadening material installed in the passage, especially as vacuum cleaner bodies become smaller as in recent years. The smaller the space required for noise reduction, the more difficult it is to achieve low noise.

The present invention has been made in view of the above, and provides a low-noise vacuum cleaner by effectively utilizing the front and rear dimensions of the long vacuum cleaner body to reduce noise caused by the exhaust air of an electric blower. This is what I am trying to do.

Embodiments of the present invention shown in the drawings will be described in detail below.

The vacuum cleaner main body 1 is composed of a ten case 2 and a lower case 3, and is provided with running wheels 4 on both sides of the rear part and a flexible wheel 5 on the bottom surface of the front part. A storage chamber 6 whose upper surface is open is formed in the front part of the vacuum cleaner main body 1, and both side walls 6a, 6b and front wall 6c of the storage chamber 6 are connected to the both side walls 1a of the vacuum cleaner main body 10.
, an appropriate space 7 is formed between the inner surface of 1b and the inner surface of front wall 1c. The cylindrical body 8 has one end opened outside the front wall 1c and the other end opened inside the front wall 6c, and is located across the space 7, with the outer open end serving as the intake port 9. The intake port 9 is brought into communication with the storage chamber 6.

A dust collection case 10, which is a dust collection part, is housed in the storage chamber 6 so as to be able to enter and exit the storage chamber 6 through its upper opening. The lid 11 is pivotally mounted so that it can be opened and closed, and the main filter 13 is attached to the rear end opening with a backing 13' on the outer periphery of the lid 11.
The pre-filter 14 is disposed between the dust suction port 12 and the main filter 13, so that they are fitted in an airtight manner.

Therefore, the dust collection case 1o has the dust suction port 12 in the stored state.
is connected to the intake port 9, and an air passage is formed from the intake port 9 to the ventilation port 15 in the rear wall 6d of the storage chamber 6 via the dust intake port 12, the pre-filter 14, and the main filter 13i. Incidentally, the top opening of the storage chamber 6 is opened and closed by a top lid 16 pivotally mounted on the cleaner body 1.

Further, the vacuum cleaner main body 1 is divided into a cord reel chamber 17 and a ventilation chamber 18 on the left and right at a rear position of the storage chamber 6, and a cord reel 19 is installed inside the cord reel chamber 17. On the other hand, an electric blower 20 is installed in the ventilation chamber 18 using anti-vibration rubber 21.2.
2 to support the interior, and connect the suction side of the fan to the ventilation port 1.
Opposite position to 5 [7]. A sound deadening material 23 such as urethane foam is wrapped around the outer periphery of the motor portion of the electric blower 20, and the sound deadening material 23 is supported by a porous sound deadening plate 24 made of a material such as rubber. Moreover, the side wall 17a of the cord reel chamber 170 and the side wall 18a of the ventilation chamber 18 are the side wall 1a of the cleaner main body 1,
1b, and these rain spaces 25.25 communicate with the spaces 7.7, respectively, and extend along the inner surfaces of both side walls 1a and 1b of the cleaner body 1. Main body 1
Exhaust passages A, A extending substantially linearly from the rear end to the front end are formed. So, this exhaust passage AXA.

A ventilation chamber 18 communicates with the rear end to guide exhaust air from the electric blower 20. That is, the ventilation chamber 1 is connected to the passage 27 on both sides of the rib 26 that supports the motor side of the electric blower 20, and the passage 28 on the inner surface side of the rear wall 1d of the cleaner body 1.
8 is communicated with the exhaust passage AXA.

In addition, in the figure, 29 is a sound deadening material such as urethane foam pasted on the inner surface of the rear wall 1d of the vacuum cleaner body 1, 30 is an exhaust port formed by drilling a large number of holes in the front wall IC of the vacuum cleaner body 1, and 31 is a sound deadening material such as urethane foam attached to 30 parts of the exhaust port,
32 indicates a shock absorbing bumper.

In the embodiment with the above configuration, when the electric blower 20 is now driven, air containing dust enters the dust collection case 10 through the suction port (not shown), the dust suction hose, the suction port 9, and the dust suction port 12, and is heated inside the dust collection case 10. Coarse dust is collected and removed by the filter 14 and fine dust by the main filter 13, and after being purified, they are sucked into the electric blower 20 through the vent 15.

The air discharged from the electric blower 20, that is, the exhaust air, passes through the sound deadening material 23 and the porous sound deadening plate 24, and then passes through the passage 27.
It enters the passage 28 from the exhaust passage A and collides with the sound deadening material 29
, is discharged to A. The exhaust air exhausted to the exhaust passages A, A flows from the rear end side to the front end side, passes through the sound deadening material 31, and is discharged to the outside of the machine from the exhaust port 30. Then,
The above-mentioned exhaust passage A has a sufficient length equivalent to the front and rear dimensions of the vacuum cleaner body 10, and is approximately straight, so it gives a rectifying effect to the flow of the exhaust air, and the rectification of the exhaust air has a large effect. It can exhibit a noise reduction effect. Also, the exhaust air is dispersed to the exhaust passages A and A on both sides. As a result, the wind speed is greatly weakened and wind noise is also attenuated, making it possible to significantly reduce overall noise.

Note that the exhaust passage A extends long from the rear end to the front end of the vacuum cleaner body 1, and has a large sound-dampening space.
A sound deadening material may be provided in the middle, and in this way, the sound deadening effect can be further enhanced.

As described above, according to the present invention, a vacuum cleaner main body having an air intake port is provided at the front end, a dust collection section connected to the air intake port is provided at the front part of the vacuum cleaner main body, and an electric motor is provided at the rear of the dust collection section. In a vacuum cleaner having an internal blower, a cord reel, etc., an exhaust passage extending from the rear end to the front end of the vacuum cleaner body is formed in the vacuum cleaner body, and the exhaust air of the electric blower is passed through the exhaust passage to the outside of the machine. By configuring the vacuum cleaner so that it can be discharged into the air, even if the vacuum cleaner itself is miniaturized, the front and rear dimensions of the long vacuum cleaner body can be effectively used to create a large space for noise reduction. Countermeasures can be easily taken and noise reduction can be achieved.

Furthermore, by forming the exhaust passage along the inner surface of the side wall of the cleaner main body, the exhaust passage becomes substantially straight, which helps in rectifying the exhaust air and further enhances the noise reduction effect.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional configuration diagram of the vacuum cleaner of the present invention, and FIG. 2 is a schematic cross-sectional configuration diagram of the same. 1: Vacuum cleaner body, 9: Intake port, 1o: Dust collection case (dust collection part), 19: Cord reel, 2°: Electric blower, 30: Exhaust port, A: Exhaust passage.

Claims (1)

[Scope of Claims] (1) A vacuum cleaner main body having an air intake port at the front end, a dust collection section connected to the air intake port provided at the front part of the vacuum cleaner main body, and an electric blower installed at the rear of the dust collection section. and a cord reel or the like installed inside the vacuum cleaner, an exhaust passage extending from the rear end to the front end of the vacuum cleaner body is formed in the vacuum cleaner body, and the exhaust air from the electric blower is discharged outside the machine through the exhaust passage. A vacuum cleaner characterized by comprising: 2. The vacuum cleaner according to claim 1, wherein the exhaust passage extends substantially linearly from the rear end to the front end. 3. Equipped with a vacuum cleaner body having an air intake port at the front end, a dust collection section connected to the air intake port is provided at the front part of the vacuum cleaner main body, and an electric blower, a cord reel, etc. are installed behind the dust collection section. In the vacuum cleaner, an exhaust passage extending from the rear end to the front end of the vacuum cleaner body is formed along the inner surface of the side wall of the vacuum cleaner body, and exhaust air from the electric blower is discharged to the outside of the vacuum cleaner through the exhaust passage. A vacuum cleaner characterized by: 4. The vacuum cleaner according to claim 3, wherein the exhaust passage is formed along the inner surfaces of both side walls of the vacuum cleaner body.