JPS6216730A - 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] 2 beno Industrial applications The present invention relates to a soundproofing device for a vacuum cleaner.

BACKGROUND OF THE INVENTION Conventionally, this type of vacuum cleaner was disclosed in Japanese Patent Application Laid-open No. 561-1, for example.
The configuration was as shown in Japanese Patent No. 08343, and specifically, as shown in FIG. 3.

That is, as a soundproofing and vibrationproofing device for the fan motor 1, which is the main sound source of the vacuum cleaner, there are
By arranging the rear support rubbers 2 and 3 and supporting them with the main body 4, vibrations are damped by the front and rear support rubbers 2 and 3. Furthermore, an annular soundproof plate 6 and a soundproof cylinder 6 made of a sound absorbing material are arranged at the exhaust part of the fan motor 1.

Problems to be Solved by the Invention As described above, in the conventional configuration, since the fan motor 1 normally rotates at 24,000 to 280 oorpm, vibrations on the fan side are particularly large, and are propagated to the main body 4 via the front support rubber 2. However, as a vacuum cleaner, the vibration 3A-7 had a high sound, with a frequency of around 400 Hz, which was particularly unpleasant to the ears.

As mentioned above, due to the high speed rotation, the wind noise of the fan was high, and the sound that passed through the suction part of the fan motor 1 and the fan case also passed through the main body 4, making the noise high.

Means for Solving the Problems The technical means of the present invention for solving the above problems is to install front and rear support rubber in a substantially cylindrical soundproof cylinder that covers the entire fan motor, which is equipped with rubber supports on the front and rear sides of the fan motor. A backing plate and interference rubber are each placed on the opening side of the soundproof tube, and the front part is supported by the main body via the interference rubber, making it a double support structure, and a sound-absorbing packing is placed inside the interference rubber. It is.

action The effects of this technical means are as follows.

In other words, the fan side of the fan motor, where vibrations are particularly large, is supported in this order by the front support rubber, the own plate, the interference rubber, and the main body, so that the vibrations are attenuated by the support rubber and the interference rubber, making it difficult for them to propagate to the main body. In addition to reducing vibration noise,
The entire fan motor including the fan case 2 is covered with a soundproof cylinder, and a sound-absorbing gasket is placed on the outside of the suction section where the wind noise of the fan can be absorbed.The sound-absorbing gasket absorbs sound and interferes with rubber.

Sound is insulated by a soundproof tube, and the transmission of wind noise to the outside of the main body is extremely small, effectively reducing noise.

Example An embodiment of the present invention will be described below based on the accompanying drawings.

In FIGS. 1 and 2, reference numeral 20 denotes a main body having an upwardly opening dust collection chamber 21 on the front side and a fan motor chamber 24 containing a built-in fan motor 23 on the rear side partitioned by a main body partition 22. A front cover 25 is disposed at the front of the dust collection chamber 21 and attached to the main body 20, and has a suction port 26 to which a hose (not shown) is connected.

A dust collection bag 27 is attached to the dust collection chamber 21, and a removable dust lid 28 is attached to the upper opening.

Reference numeral 29 denotes a body bar 5 that covers the upper part of the fan motor chamber 24, and a rotatable handle 30 for carrying the vacuum cleaner is pivotally supported on the upper part.

Reference numerals 31 and 32 denote front wheels and rear wheels for movement disposed at the bottom of the main body 2o.

33 covers the entire outer periphery of the fan motor 23, and
It is a substantially cylindrical bottomed soundproof tube that supports the fan motor 23 via front and rear support rubbers 34 and 35 disposed at the front and rear thereof.

Front Kf= The support rubber 34 is the fan of the fan motor 23 (
It is installed on the outer periphery of the fan case 36 that covers the fan case 36 (not shown), and is located on the opening side of the soundproof cylinder 33, and a substantially circular contact plate 37 is brought into contact with the folded front part. A loose interference rubber 38 is installed and brought into contact with the main body partition wall 22. One end of the interference rubber 38 that comes into contact with the own plate 37 is also wound around the outer periphery of the backing plate 37, and is further inscribed in the soundproof cylinder 33 via the interference rubber 38 of the backing plate 37Vi.

39 is a sound absorbing gasket located inside the interference rubber 38 and installed between the contact plate 3a and the main body @ wall 22, which absorbs the sound generated at the intake part of the fan motor 23, etc., and aims to reduce noise. It is something.

Reference numeral 40 denotes a plurality of protrusions formed on the own plate 37, which are arranged so as to be inscribed in the sound-absorbing packing 39, and prevent the sound-absorbing packing 39 from being sucked in by the suction force of the fan motor 23. .

A support rib 41 is formed on the outside of the soundproof cylinder 33,
A support rubber 42 is attached to the support rib 41 and supported by the main body 20 and the main body cover 29.

In this way, the soundproof cylinder 33 is also supported by vibration absorbing and damping ribs and rubber, thereby reducing vibration noise.

43 is an exhaust port formed in the soundproof cylinder 33, and 44 is a main body exhaust port formed in the main body 20. The exhaust air of the fan motor 23 is discharged from the main body exhaust port 44 to the outside of the machine body.

In addition, the fan motor 23 has a diameter of 24,000 to 28
It rotates at 0oorpm, and the suction side in particular has a negative pressure, and a compressive force acts on the front support rubber 34 and the interference rubber 38 in the forward direction, and the thrust vibration of the fan case 36 has an insignificant effect on vibration noise. However, as mentioned above, a double vibration absorption structure is adopted.

According to the present invention, the fan motor is supported by the main body bulkhead and the soundproof cylinder via the front and rear gongs, the contact plate and the T-crossing rubber, and the entire fan motor is By covering the vacuum cleaner with a soundproof cylinder and arranging a sound-absorbing gasket on the suction part of the fan motor, vibration noise and wind noise are reduced, thereby reducing noise as a vacuum cleaner.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a vacuum cleaner showing an embodiment of the present invention;
FIG. 2 is a sectional view of E in FIG. 1, and FIG. 3 is a sectional view of a conventional vacuum cleaner. 20... Main body, 22... Partition wall, 23...
・Fan motor, 33... Soundproof cylinder, 34... Front support rubber, 35... Rear support rubber, 36...
Fan case, 37...Plate, 38...
Interference rubber, 39...Sound absorbing gasket, 40...Protrusion.

Claims (3)

[Claims] (1) A substantially cylindrical bottomed soundproof tube disposed in a fan motor chamber partitioned by a partition, a fan motor mounted in the soundproof tube via front and rear support rubber, and a soundproof tube installed in the soundproof tube through front and rear support rubber. The partition wall and the open end of the soundproof cylinder are installed with a gap between them, and a substantially cylindrical sound absorbing packing is provided inside the partition wall and the contact plate, and an interference rubber is installed between the partition wall and the soundproof cylinder. A vacuum cleaner with a double layer structure on the outside. (2) One end of the interference rubber that contacts the backing plate side is wound around the outer periphery of the backing plate, and the backing plate is inscribed in the soundproof cylinder via the interference rubber. Vacuum cleaner. (3) The vacuum cleaner according to claim 1, wherein a plurality of protrusions inscribed in the substantially cylindrical sound-absorbing packing are arranged on the backing plate.