JPS62109531A - 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 Field of Industrial Application The present invention relates to a vacuum cleaner employing a soundproof structure.

Conventional technology Conventionally, a vacuum cleaner as shown in FIG. 4 has been known.

Air flow from this vacuum cleaner starts from the intake port 1, passes through the primary filter 2, passes through the secondary filter 3, and inside the electric blower 4, and then flows into the exhaust passage 6 between the electric blower 4 and the cord winding device 6. It was being discharged outside the main body from the flow exhaust gasket. The exhaust passage 6 is entirely constructed as a detour by a soundproof wall 8.

Problems to be Solved by the Invention In the above-mentioned vacuum cleaner, the sound of the wind generated from the electric blower 4 and the sound of the wind passing through the main body are high, so it is necessary to bypass the exhaust air inside the main body with a soundproof wall 8 or the like and directly blow the air. Efforts were made to prevent exhaustion, but as can be seen in the frequency analysis diagram in Figure 5, this is still the case.

The sound was high, and reducing noise was one of the major improvements.

The present invention solves all of the above-mentioned problems, and provides a vacuum cleaner that employs a simple soundproof structure to reduce noise.

Means for Solving the Problems The technical means of the present invention to achieve the above object is to provide a plurality of holes in the bulkhead of the main body facing the exhaust passage of the electric blower and equipped with a cord winding device, The cord storage space in which the entire device is housed serves as a completely sound-absorbing space that reduces exhaust noise through the muffler effect.

Function: This technical means works as follows: The electric blower and the exhaust noise generated in the exhaust passage are removed by a plurality of holes provided in the bulkhead of the main body attached to the entire area of the cord winding device and the cord winding device. The cord storage space that houses the device creates a muffler effect to muffle noise.

EXAMPLE An example of the present invention will be described below with reference to the drawings. 1st
In Figures 1 to 3, reference numeral 1o denotes an electric blower, which is placed inside the vacuum cleaner body 13 in a state where it is partially surrounded by a soundproof wall 14 formed integrally with the vacuum cleaner body 13 by a support rubber front 11 and a support rubber rear 12. 010' housed in is the motor exhaust port.

16 is a cord winding device for winding up the cord 16, and its shaft 1 is attached to the body bulkhead 18 using a screw 19.
The main body bulkhead 18 is rotatably attached to the vacuum cleaner body 13, and 2o is a contact point for power supply. The cord winding device 16 and the vacuum cleaner body 1
It divides the inside of 3. Further, the side of the shaft 1 of the cord winding device 16 opposite to the main body partition wall 18 is supported by a support rib 23. A plurality of holes 24 are provided in the main body partition wall 1B, and a sound absorbing material 26 such as felt is pasted behind each hole 24. 26 is a cord storage space that accommodates the cord winding device 15, and is communicated with the exhaust passage 27 of the electric blower 10 through i and a hole 24 in the main body partition wall 18 facing this passage.

28 is a power supply circuit component. 29 is a main body handle. 3
o is an intake port provided in the vacuum cleaner body 13, 31 is a main filter, 32 is a secondary filter, and 33 is an exhaust port that communicates with the exhaust passage 27. ○Here, the air flow is as shown by the arrow. The air enters from the intake port 30, passes through the main filter 31, passes through the secondary filter 32, passes through the exhaust passage 27 from the exhaust port 10' of the electric blower 10, and is discharged from the exhaust port 33 to the outside of the main body.

The exhaust air from the electric blower 1o passes between the electric blower 10 and the main body bulkhead 18 to which the cord winding device 15 is attached, as shown by the arrow. The plurality of holes 24 and the cord storage space 26 serve as a kind of muffler to reduce exhaust noise.

In this study, the noise level of the vacuum cleaner was reduced by about 2 dB by providing about 70 holes 24 of φ6 to φ8 and pasting T6 fer i as the sound absorbing material 26 on the back side. The frequency analysis diagram is shown in Figure 3. From this figure, it is clear that the frequency is about 1000Hz to 5000H compared to the conventional one.
The area near Z has decreased and the overall noise has also decreased. Note that when the sound absorbing material 25 is not provided, about half the effect is generated.

The effect of the invention is that noise can be effectively reduced by using the main body partition without using separate parts or reducing performance.

[Brief explanation of drawings]

FIG. 1 is a partially sectional plan view of an embodiment of the present invention, FIG. 2 (AC, CB') is a plan view and cross-sectional view of the main parts, and FIG. A frequency analysis diagram of a vacuum cleaner, Fig. 4 is a partially sectional plan view of a conventional example;
FIG. 6 is a frequency analysis diagram of a conventional vacuum cleaner. 10... Electric blower, 15... Cord winding device, 18... Body bulkhead, 24...
... Hole, 26 ... Sound absorbing material, 26 ... Cord storage space, 2 End ... Exhaust passage.

Claims (2)

[Claims] (1) A main body partition is provided to separate the electric blower and cord winding device installed inside the vacuum cleaner main body,
The main body bulkhead faces the exhaust passage of the electric blower and has the cord winding device attached thereto, and the body bulkhead also has a plurality of holes in communication with the cord storage space housing the cord winding device and the exhaust passage. A vacuum cleaner with a (2) The vacuum cleaner according to claim 1, wherein the hole in the main body partition wall is covered with a sound absorbing material.