JPH0355020A - Electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To diminish noise and shift an exhaust port to an desired position by a method wherein a straight muffler is mounted on the exhaust port of a main body case, and a flexible or extensible member is furnished between the exhaust port and a muffler. CONSTITUTION:A main body case 1 of an electric vacuum cleaner encloses an electric fan 9 and other, and a window having a spring or slide type openable shutter 5 is provided nearby an exhaust port 3 on the rear side. An exhaust passage 7 is provided on a partition wall 6 facing the shutter 5, and a seal rubber 8 is attached inside the exhaust passage. A muffler pipe 11 consists of a small diameter pipe 12 which is inserted into the exhaust passage 7, a large diameter pipe 13 and a flexible member 14 which connects the small and large diameter pipes. Noise insulating material 15 composed of urethane resin, felt, etc. is attached on the inner surface of the large diameter pipe 13 and an outlet 13a. When the vacuum cleaner is put in operation, as whole air is exhausted through the muffler pipe 11 which is long and provided with noise insulating material 15, the noise is remarkably reduced. Moreover, since the muffler pipe 11 is furnished with the flexible pipe 14, the outlet 13a can be freely directed to the right or left or upward or downward.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner with a noise-reducing function.

[Prior art] An example of a vacuum cleaner with a conventional noise reduction function is the
There is an idea disclosed in Japanese Patent No. 3-132853.

This idea involves attaching an elbow to the vacuum cleaner body that has a flow path that changes the flow direction of the exhaust gas ejected from the vacuum cleaner's exhaust port downward and discharges it into the outside air, thereby reducing motor noise and exhaust noise. This is designed to reduce the noise caused by the noise.

[Problems to be Solved by the Invention] The vacuum cleaner described above has the following problem because the elbow is fixed to the vacuum cleaner body with the discharge port facing downward.

(1) When connecting a hose to the tip of the elbow and using the exhaust air to remove dust from the grooves of aluminum sashes or blinds, the hose must be bent and connected to the elbow from below. If the operability is poor, the hose is likely to be damaged rather than strained.

(')〉During cleaning, the exhaust air blows up dust from the floor, which worsens the indoor air quality.

<3) If an attempt is made to lengthen the exhaust path within the vacuum cleaner main body in order to increase the noise reduction effect, the main body will become larger and heavier, making it difficult to operate.

The present invention was made to solve the above problems, and reduces noise without reducing operability. ': The aim is to obtain a vacuum cleaner that can be used.

``Means for Solving the Problems'' The vacuum cleaner according to the present invention has the following features: (1) A linear vacuum cleaner consisting of a small diameter part that is detachably attached to the exhaust port of the main body case and a large diameter part that has a discharge port. One with a pipe.

(2) The small diameter part and the large diameter part are connected by =J flexible member or telescopic member.

3) Equipped with a mounting part that is removably and rotatably attached to the exhaust port of the main body case, and a sound deadening pipe that is bent at least once and has an exhaust port at the other end. and (4) a sound deadening material or filter is provided inside the sound deadening pipe.

[Function 1) The noise of the vacuum cleaner's exhaust gas is reduced by the noise-muffling pipe, and it is discharged from the exhaust port to the rear of the main body case.

(2) Since the sound deadening pipe can be bent by the flexible member, the discharge port can be moved to any desired position.

Furthermore, the muffling pipe can be extended by the expandable member to lengthen the exhaust path.

(3) By rotating the muffling pipe, the outlet can be moved to any desired position. Further, the direction of exhaust gas is changed by the bent portion of the muffling pipe and the flow velocity is reduced, so that the muffling effect can be enhanced.

(4) The muffling effect can be further improved by using the /l'l sound material. Further, the filter can remove dust in the exhaust gas and exhaust clean air.

[Embodiment FIG. 1 is a sectional view showing the main part of an embodiment of the present invention]. In the figure, (L) is the main body case of the vacuum cleaner, which has moving wheels (2) on the bottom surface, and has an electric blower (9) built in, and the rear surface is close to the exhaust port (3). A window hole (5) with a spring-type or slide-type shack (5) that can be opened and closed
4) is provided. (7) is a round exhaust flow path provided at a position aligned with the shutter (5) of the partition wall (6), and a sealing rubber (8) is attached to the inner edge.

(1l) is a sound deadening pipe, which has a small diameter part (12) inserted into the exhaust flow path (7) and a large diameter part with sound deadening material (l5) made of urethane, felt, etc. attached to the inner surface and discharge port (13a). (13) and a flexible member (i4) that connects the two. Note that the tip of the small diameter portion (12) is sloped and has a gap in order to improve the efficiency of sucking in the exhaust gas.

In this embodiment configured as described above, a sound-reducing vibrator (
1l) to the main body case (1), first open the shutter (5) and insert the small diameter part ({2) of the silencer pipe (11) into the exhaust flow path (7) through the window hole (4). .

At this time, the tip of the small diameter part (11) is supported and sealed by the rubber (8), and the discharge port (
13a) opens at the rear of the case body 1.

When the vacuum cleaner is operated in the above state, all the air coming out of the electric blower (9) is exhausted through the exhaust vibrator (11). At this time, the exhaust pipe (11) has a long exhaust path, and the large diameter part (13) has a silencing U' (15
), the noise is significantly reduced.

Furthermore, since the exhaust port (13a) of the exhaust pipe (l1) is open to the rear, dust on the floor is not kicked up.

Furthermore, since the sound deadening vibrator (1L) is equipped with a flexible tube (14), there is a discharge port (13a) as shown by the dashed line in the figure.
The position of can be freely changed up, down, left and right. Therefore, even when the hose is connected to the sound vibrator (11) and the ejected exhaust gas is used, the operability is good and there is no risk of damaging the hose.

2 to 8 are cross-sectional views of other embodiments of the present invention.

In the embodiment shown in FIG. 2, a small diameter part (l2) and a large diameter part (l3) are connected by a telescopic member 06 such as a bellows to form a sound deadening pipe (lla). As shown, the exhaust flow path is lengthened by extending the extensible member (IB) and the silencing pipe (llb), thereby increasing the silencing effect. When using it, if you lengthen the muffling vibrator (lla) and take the outlet (13a) outside to clean it,
It is hygienic as it does not emit exhaust air into the room. In this embodiment as well, the position of the discharge port (13a) can be freely changed vertically and horizontally, as in the embodiment shown in FIG. Moreover, if a sound deadening material is attached to the inner surface of the large diameter portion (l3), the sound deadening effect can be further enhanced.

In the embodiment shown in FIG. 3, the sound deadening vibrator (llb) is formed into an L-shape, and a sound deadening material (15) is attached to the bent part and the discharge port (13a).
The exhaust port (13a) is rotatably and detachably attached to the main body case (1) as shown in figure (b), and the exhaust port (13a) can be moved to any position as required. This embodiment is particularly effective when a hose is connected to the discharge port (13a) and dust is removed using exhaust gas.

In the embodiment shown in FIG. 4, the muffling pipe (lie) is formed into a substantially U-shape to lengthen the exhaust path, and the inner surface of the bent part and the exhaust port (Ha
) with soundproofing material (15) attached to the main body case (1)
The discharge port (13a) is opened under the main body case (1) and in the front. With this configuration, the sound-muffling pipe (li
e) becomes longer, and the distance from the outlet (13a) to the operator's ear becomes longer, and the main body force bar (1)
Since the sound is insulated, the sound silencing effect can be improved. Incidentally, if necessary, the exhaust port (13a) can be positioned above or to the side of the main body force bar (1) by rotating the muffling pipe (lie).

In the embodiment shown in Fig. 5, the muffling pipe (lid) is formed in an inverted S-shape in order to lengthen the exhaust path, a muffling material (15) is attached to the bent part and the discharge port (13a), and the main body case (lid) is {
) is rotatably and removably attached. This configuration not only lengthens the exhaust path, but also changes the flow direction of the exhaust gas inside the muffling pipe (Lid), which reduces the flow velocity of the exhaust gas each time the direction changes, further increasing the muffling effect. be able to. In this embodiment as well, the position of the discharge port (13a) can be changed to above, to the side, etc. of the main body case (1) by rotating the sound deadening vibrator (lid).

In addition, in the embodiments shown in FIGS.
) is shown in which the sound deadening material (15) is attached, but part or all of it may be omitted.

In the embodiment shown in FIG.
2) and a large diameter part (13) having a discharge port (13a), and a sound deadening material (15) made of urethane, felt, etc. is pasted on the inner peripheral surface of the large diameter part (13). This embodiment is not only effective as an exhaust noise muffling pipe, but also can reduce noise by absorbing suction sound by connecting it to a dust suction hose (16) as shown in FIG.

In the embodiment shown in FIG. 8, the sound deadening pipe (llf) is
12), and a large-diameter part (13) that has a large number of exhaust ports (13a) on the outer periphery and has a high-performance filter ({7>) such as a non-woven fabric inside, and eliminates exhaust noise. It is possible to reduce the amount of dust and to prevent the discharge of the fine dust that has been sucked in.

In addition, in the embodiments shown in FIGS. 6 and 8, a sound deadening vibrator (Lie). (Llf) small diameter part (
A flexible member or a telescoping member can be connected between 12) and the large diameter portion (l3).

[Effects of the Invention] As is clear from the above description, the following effects can be obtained according to the present invention.

(1) By attaching a straight noise-muffling pipe to the exhaust port of the main body case, the exhaust gas is discharged to the rear of the vacuum cleaner.
Not only does it reduce noise, but there is also no risk of dust from the floor flying up.

(2> By attaching a flexible member to the noise-reducing pipe, the exhaust port can be moved to any desired position.Also, by attaching an elastic member to the noise-reducing pipe, it can be stretched and the exhaust path lengthened, resulting in noise reduction. Not only can the effect be further enhanced, but the exhaust port can also be moved to any desired position.Therefore, these are particularly effective when connecting a hose to the muffling pipe to utilize the ejected exhaust air.

(3) By bending the muffling pipe to lengthen the exhaust path, the flow direction of the exhaust gas changes at the bend and the flow velocity decreases, so the muffling effect can be further improved. Furthermore, by rotating the muffling pipe, the outlet can be moved to a desired position.

(4) By providing a sound deadening material inside the sound deadening pipe, the sound deadening effect can be further improved. Furthermore, by inserting a filter, the exhaust air from the exhaust port can be cleaned.

(5) As described above, according to the present invention, it is possible to obtain a vacuum cleaner with a large noise reduction effect and good operability.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view showing the main part of an embodiment of the present invention, FIG. 2 and FIGS. 4 to 8 are sectional views showing the main part of another embodiment of the invention, and FIG. ) is a sectional view showing a main part of another embodiment of the present invention, and (b) is an explanatory diagram of its operation. In the figure, (l) is the main body case, <4> is the window hole, and (5)
) is the shutter, (7) is the exhaust flow path, (9) is the electric blower, (11) to (llf) are the muffling pipes, (12) is the small diameter part, (13) is the large diameter part, (L3a) is the exhaust Exit, (l4)
is a flexible member, (15> is a sound deadening material, (l6) is an elastic member,
<17) is a filter. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (4)

[Claims] (1) In a vacuum cleaner in which an electric blower is installed in a main body case that has an inlet and an exhaust port, a small diameter part that is detachably attached to the exhaust port of the main body case, and a large diameter part that has an exhaust port. A vacuum cleaner characterized by being equipped with a straight noise-muffling pipe. (2) Claim (2) characterized in that the small diameter part and the large diameter part of the sound deadening pipe are connected via a flexible member or an expandable member.
1) The vacuum cleaner described. (3) Instead of the sound-muffling pipe, the sound-muffling pipe has a mounting part that is detachably and rotatably attached to the exhaust port of the main body case at one end, and is bent at least once and has an exhaust port at the other end. The vacuum cleaner according to claim 1, further comprising a pipe. (4) The vacuum cleaner according to any one of claims (1) to (3), wherein a sound deadening material or a filter is provided in the sound deadening pipe.