JPH1014827A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance sucking efficiency and assembling operability by forming a flange on the outer periphery of a baffle placed on the front of a motor-driven blower, and interposing the flange between a motor cushion and the front of the motor-driven blower. SOLUTION: A dust collecting chamber 3 and an electric motor chamber 4 are formed respectively at the front and the rear of a vacuum cleaner main body 1, a communicating hole 6 is formed in a defining wall 5 defining the dust collecting chamber 3 and the electric motor chamber 4, and a filter 7 is placed in front of the defining wall 5. A suction opening 18 is formed in the center of the front of the fan part 17 of a motor-driven blower 15, and a baffle 19 placed on the front of the fan part 17 is formed into roughly the same size as the outside diameter of the fan part 17. An opening 20 that matches the suction opening 18 in the fan part 17 is formed in approximately the center of the baffle 19, a step 21 that fits the bore of a motor cushion 24 is formed on the outer periphery of the baffle 19, and a flange 22 formed on the outer periphery of the step 21 is interposed between the motor-driven blower 15 and the motor cushion 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vacuum cleaner having a built-in electric blower.

[0002]

2. Description of the Related Art Conventionally, an electric blower incorporated in a vacuum cleaner has an intake port formed at a central portion of a fan cover which covers a fan and a diffuser, and gradually decreases from the intake port toward the outer periphery. Therefore, there is a drawback that the air sucked from the front of the cleaner body toward the electric blower becomes turbulent on the front surface of the fan cover and the suction efficiency is reduced.

In view of this drawback, as shown in FIG. 3, a cover 31 having a substantially flat front surface is provided on the front surface of the fan cover 30 so that air sucked from the front of the cleaner can smoothly flow into the air inlet of the fan cover 30. Some are configured to be guided.

However, the cover 31 has its outer peripheral portion fitted and held in a groove 33 on the inner peripheral surface of a motor cushion 32 having a substantially L-shaped cross section for supporting a front corner portion of the fan cover 30 of the electric blower. Therefore, the motor cushion 32 must be bent and fitted to the outer periphery of the cover 31, and there is a problem that the assembling workability is poor.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has as its object to provide a vacuum cleaner which can improve suction efficiency and can be easily assembled.

[0006]

According to the present invention, there is provided a vacuum cleaner body having a dust collecting chamber and a motor room formed therein, an electric blower housed in the motor room, and a front part of the electric blower. A motor cushion and a rectifying plate disposed on the front surface of the electric blower are provided, and a flange is formed on an outer peripheral portion of the rectifying plate, and the flange is interposed between the motor cushion and a front portion of the electric blower. It is characterized by the following.

Further, the present invention provides a vacuum cleaner main body in which a dust collecting chamber and an electric motor room are defined, an electric blower housed in the electric motor room, and a motor cushion attached to a front portion of the electric air blower. A rectifying plate disposed on the front face of the electric blower, a stepped portion fitted to the inner diameter portion of the motor cushion is formed on an outer peripheral portion of the rectifying plate, and a flange portion is formed on the outer periphery of the stepped portion. The flange is interposed between the motor cushion and the front of the electric blower.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

Reference numeral 1 denotes a cleaner main body, a dust collecting chamber 3 for detachably storing a dust collecting bag 2 in the front, and an electric blower 15 to be described later in the rear.
Is formed in the motor room 4 for housing the motor room. Reference numeral 5 denotes a partition wall for partitioning the dust collection chamber 3 and the motor chamber 4, which has a communication hole 6 for communicating the dust collection chamber 3 and the motor chamber 4, and a filter 7 at a front portion of the partition wall 5. Are arranged. Reference numeral 8 denotes a substrate storage chamber partitioned above the motor chamber 4 and stores a substrate 9 for controlling an electric blower 15 described later.

Reference numeral 10 denotes an exhaust port formed on the rear surface of the cleaner body 1. Reference numeral 11 denotes an exhaust cover detachably provided at a position corresponding to the exhaust port 10. An exhaust filter 12 is provided between them.

Reference numeral 13 denotes a support rib formed at the bottom of the electric motor room 4 near the partition wall 5, and supports the electric blower 15 via a motor cushion 24 (both will be described later). Reference numeral 14 denotes a contact rib protruding from the partition wall 5 on the side of the electric motor room 4.
The communication hole 6 of the partition wall 5 and the electric blower 15
The gap between the air intake port 18 and the air intake port 18 is maintained.

Reference numeral 15 denotes an electric blower housed in the motor room 4, and an electric motor unit 16 incorporating a rotor and a stator.
And a fan 17 disposed on the upstream side of the motor section 16 and a fan section 17 covering the diffuser. An intake opening 18 is formed at the center of the front of the fan section 17.

Reference numeral 19 denotes a resin rectifying plate disposed on the front surface of the fan unit 17, which is formed to have substantially the same outer diameter as the fan unit 17, and has a fan unit
An opening 20 corresponding to the intake opening 18 is formed. twenty one
Is a step formed on the outer peripheral portion of the rectifying plate 19;
Are fitted to the inner diameter of a motor cushion 24 described later. Reference numeral 22 denotes a flange formed on the outer periphery of the step portion 21. The flange 22 is interposed between the electric blower 15 and a motor cushion 24 described later.

By slightly increasing the distance between the intake port 18 of the electric blower 15 and the partition wall 5, the suction power is improved.
As in the present embodiment, the thickness of the flange 22 of the current plate 19 is set to about 2 mm.
Then, the suction power is most improved.

Reference numeral 23 denotes a rising portion which is formed at the edge of the opening 20 of the rectifying plate 19 and protrudes toward the front side. When the rectifying plate 19 is disposed on the front of the electric blower 15, the air intake of the electric blower 15 By forming an axial wall at the port 18, the suction efficiency is improved. The efficiency is good when the length of the rising portion 23 is about 4 mm to 6 mm, and the efficiency is most good when the length is about 4 mm.

Numeral 24 denotes a motor cushion made of an elastic material provided at a front corner of the fan 17 of the electric blower 15. The inner diameter of the motor cushion is fitted to the step 21 of the rectifying plate 19 and the flange is formed.
A holding portion 25 for holding 22 between the front surface of the fan portion 17 and an outer peripheral portion formed integrally with the holding portion 25 and abutting against the side surface of the fan portion 17
26 is formed in a substantially L-shaped cross section.

The motor cushion 24 is attached to the electric blower 15 with the current plate 19 placed on the front of the electric blower 15. At this time, since the step portion 21 of the current plate 19 fits inside the holding portion 25 of the motor cushion 24, the current plate 19 can be easily positioned, and the opening 20 of the current plate 19 and the electric blower 15
The air inlet 18 of the motor cushion 24 surely matches, and the rectifying plate 19 can be securely attached by interposing the flange portion 22 of the rectifying plate 19 between the holding portion 25 of the motor cushion 24 and the fan portion 17, Workability can be improved.

Further, the electric blower 15 and the motor cushion
By housing the electric blower 15 in the motor room 4 while holding the current plate 19 between the air blower 24 and the motor 24, turbulence of air at the front of the electric blower 15 is prevented, and the air is smoothly guided to the intake port 18, The suction efficiency is improved.

[0019]

According to the first aspect of the present invention, by installing a flow straightening plate, turbulence of air at the front of the electric blower can be prevented and the air can be smoothly guided to the intake port. The rectifying plate can be attached by interposing the flange of the rectifying plate between the blower and the motor cushion, and the mounting workability can be improved.

According to the second aspect of the present invention, by attaching the flow plate, turbulent air flow at the front of the electric blower can be prevented, the air can be smoothly guided to the intake port, and the suction efficiency can be improved. In addition, the rectifying plate can be attached by interposing the flange portion of the rectifying plate between the electric blower and the motor cushion, and the step portion of the rectifying plate is fitted to the inner diameter portion of the motor cushion so that the rectifying plate is fitted. Since positioning can be easily performed, mounting workability can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of the electric blower in a state where a rectifying plate is mounted.

FIG. 3 is a cross-sectional view of a main part of the electric blower according to the related art in a state where a current plate is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 3 Dust collection room 4 Motor room 15 Electric blower 19 Rectifier plate 21 Step 22 Flange 24 Motor cushion

Claims (2)

[Claims] 1. A vacuum cleaner body having a dust collecting chamber and a motor room defined therein, an electric blower housed in the motor room, a motor cushion attached to a front portion of the electric blower, and a front surface of the electric blower. And a rectifying plate disposed on an outer peripheral portion of the rectifying plate, and the flange is interposed between a motor cushion and a front portion of the electric blower. . 2. A vacuum cleaner body having a dust collecting chamber and a motor room formed therein, an electric blower housed in the motor room, a motor cushion attached to a front portion of the electric blower, and a front surface of the electric blower. A rectifying plate disposed on an outer peripheral portion of the rectifying plate, a step portion fitted to the inner diameter portion of the motor cushion is formed, and a flange portion is formed on the outer periphery of the step portion; A vacuum cleaner interposed between the motor cushion and the front of the electric blower.