JP2661273B2 - Electric vacuum cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a household vacuum cleaner for reducing noise.

2. Description of the Related Art A conventional vacuum cleaner will be described with reference to FIG. In the figure, reference numeral 1 denotes a fan motor for sucking air;
And a fan (not shown) rotated by a motor 7 and a fan case 4 that covers the fan. The fan case 4 has an intake hole 2 and the motor 7 has an exhaust hole 3. The fan motor 1 has a fan case 4 elastically supported by an anti-vibration rubber front 6 on an outer peripheral portion and a housing portion 8 of a motor bearing by an anti-vibration rubber 9 on a vacuum cleaner main body 10, respectively. It is insulated from the vibration of the motor 1. The front of the anti-vibration rubber 6 has a substantially cylindrical shape and its front end
Numeral 11 closely adheres to the partition plate 12 of the cleaner body 10 and also serves as a seal for preventing exhaust air from the exhaust hole 3 from flowing back to the intake hole 2. Reference numeral 13 denotes a paper bag type dust collecting filter, which is detachably attached to a dust collecting portion 14 at the front of the cleaner body 10,
When the front cover 15 is opened, it can be easily taken out. A hose 16 for collecting dust has a floor nozzle (not shown) attached at one end, and the other end is connected to the filter 13 through the front cover 15.

Next, the dust collecting operation will be described. When the fan motor 1 is driven, air containing dust is sucked from the floor nozzle.
This air is sent through the hose 16 to the inside of the filter 13,
Here, it is separated into dust and air. This dust remains inside the filter 13, and the air passes through the air vents of the partition plate 12 of the cleaner body 10.
The air flows into the intake hole 2 of the fan motor 1 through 19, cools the motor 7, and is exhausted from the exhaust hole 3. Fan motor 1
The more exhausted air passes through the air passage inside the cleaner body 10.
The air is exhausted outside through the exhaust hole 22 through the main body 21. The dust collected in this way is accumulated in the filter 13 one after another. When the filter 13 is full of dust, the front lid 15 of the cleaner body 10 is opened, the filter 13 is taken out and discarded. If a new filter 13 is attached, dust can be removed without soiling the hands. Reference numeral 23 denotes a filter base for improving dust collection efficiency.

One of the problems of the conventional vacuum cleaner described above is a noise problem. That is, the vibration due to the rotational imbalance of the fan motor 1 is transmitted to the cleaner main body 10 and generates unpleasant noise. The vibration of the fan motor 1 itself has a swing mode about the axis. In other words, the outer peripheral portion of the fan case 5 has such a property that the axial vibration component becomes larger, and the axial core portion becomes smaller. For this reason, the conventional vacuum cleaner has a configuration in which the front end of the front of the vibration isolating rubber 6 is made as soft as possible, and the suction force acting in the axial direction is supported by the rear 9 of the vibration isolating rubber. That is, if the axial force is supported at a portion as close to the axis as possible, the vibration transmitted to the cleaner main body 10 can be reduced. However, in the conventional structure, since the vibration isolating rubber 9 is provided on the outer periphery of the housing portion 8 of the motor bearing, it cannot be said that the axial core portion having the small axial vibration always supports the axial direction. In addition, the vibration transmitted from the vibration-proof rubber 9 causes the noise of the cleaner body 10. In addition, the front end of the front of the vibration isolating rubber 6 serves as a seal for intake and exhaust.
The front end needs to contact the partition plate 12. For this reason, it is desirable to seal as near the axis as possible.

As described above, in the conventional anti-vibration structure of the fan motor, the front end of the anti-vibration rubber front 6 of the fan motor is softened to support the axial direction even if the vibration transmission is reduced as much as possible. The vibration is transmitted to the main body of the cleaner due to the fact that the front of the vibration isolating rubber of the motor unit does not necessarily support the axial direction at the shaft core, which causes noise.

The present invention has solved the above-mentioned conventional problems, and has a first aspect.
It is an object of the present invention to provide a configuration in which a fan motor can be supported in an axial direction as close to an axis as possible. A second object is to provide a configuration in which the sealing of the fan motor in front of the rubber is performed as close to the shaft center as possible.

Means for Solving the Problems In order to achieve the first object, the vacuum cleaner of the present invention includes a fan motor, and sandwiches and encloses the front and rear sides of the fan motor via a front and a rear of a vibration isolating rubber. A cylinder having a vacuum cleaner main body divided into two parts, a convex support having a through hole in the radial direction provided in the vicinity of a rear shaft center of the fan motor, and a flange having flanges at both ends after the vibration-proof rubber. And, after this vibration-proof rubber is fitted into the through hole of the convex support portion,
At least one of the boss portions of the cleaner body has a shaft portion,
By inserting this shaft portion into a mounting hole after the vibration isolating rubber, vibration isolating support is performed near the rear shaft center of the fan motor.

According to another aspect of the present invention, there is provided a vacuum cleaner in which a suction hole of a fan case constituting a fan motor is provided so as to protrude, and a front of an anti-vibration rubber is provided in the suction hole to partition a cleaner body. It was supported by a plate.

In the first means, the vibration isolating support at the rear portion of the fan case can be performed near the axis, so that the vibration transmitted from the fan motor to the cleaner main body can be reduced. Noise can be reduced.

Further, according to the second means, since the sealing is performed at the protruding intake hole of the fan case, the sealing portion can be formed near the axis, and the vibration transmitted to the cleaner body can be reduced.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. Numeral 30 denotes a convex support provided at the rear of the motor 7 and has a through hole 31 in the radial direction. Numeral 32 denotes an anti-vibration rubber made of a cylindrical rubber having flanges 33 at both ends, and is inserted into the through hole 31. Numeral 34 denotes a main body which is one of two divided vacuum cleaner main bodies, and numeral 35 denotes a lower part of the main body. The partition plate 12 is formed integrally with the lower body 35. Reference numerals 36 and 37 denote boss portions integrally formed with the main body upper portion 34 and the main body lower portion 35, respectively, and have a stepped shape including a pedestal portion 38 and a shaft portion 39. That is, the bosses 36 and 37 of the upper body 34 and the lower body 35 are attached to the mounting holes 41 of the vibration-proof rubber.
It is pinched by inserting it into At this time, the vertical direction is supported by the pedestal portion 38 of the boss portion, and the horizontal direction is the shaft portion of the boss portion.
Supported by 39.

With the above-described configuration, the axial support by the anti-vibration rubber 32 can be performed near the axis, so that the vibration transmitted from the fan motor 1 to the cleaner body 10 can be reduced, and the noise can be reduced.

Next, a second embodiment is shown in FIGS. FIG. 1,
The same parts as those in the first embodiment described with reference to FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 42 denotes a protruding intake hole of the fan case 4. The partition plate 12 fixed to the lower body 35 has a communication hole 43 connected to the dust collection chamber 14, and a cylindrical anti-vibration rubber front 45 having a groove 44 at the center is formed on the inner periphery of the communication hole 43. It is fitted to. And before this anti-vibration rubber
Numeral 45 is inserted into the protruding intake hole portion. The structure of the anti-vibration rubber 32 is the same as that of the previous embodiment,
The boss part 46 is only the pedestal part 47, and the boss part
51 includes a pedestal portion 48 and a shaft portion 49. That is, the brim portion 33 of the anti-vibration rubber 32 is attached to the pedestal portion of the boss portion 46 of the lower body 35.
It is placed on 47, and the mounting hole 41 on the
The shaft 49 of the 34 boss 51 is inserted. At this time, the distal end of the shaft portion 49 of the upper main body 34 has a configuration in which the pedestal portion 47 of the lower main body 35 is fitted into the recess 50.

When assembling the vacuum cleaner according to the present embodiment, first, after attaching the anti-vibration rubber 32 to the through hole 31 of the fan motor, the fan is mounted with the post-vibration rubber 32 placed on the pedestal portion 47 of the lower body 35. The protruding intake hole part 42 of the case 4 is inserted into the inner periphery of the vibration-proof rubber front 45 already mounted on the communication hole 43,
The shaft part 49 is inserted and fixed in the mounting hole 41 of the anti-vibration rubber 32.

With the configuration described above, the axial support by the anti-vibration rubber 32 can be performed near the axis, and at the same time, the sealing by the anti-vibration rubber 45 can be performed near the axis, thereby reducing the vibration transmitted to the cleaner body 10. Become. Regarding the seal, since the seal can be made at the front of the vibration isolating rubber 45 and the insertion portion of the protruding intake hole 42 of the fan case 4, there is more variation than the conventional seal by pressing the front end of the vibration isolating rubber and the partition plate 12. A less reliable seal is made possible.

Effect of the Invention As described above, in the first embodiment of the present invention, the axial support of the fan motor after the vibration isolation rubber can be performed near the axis, and the vibration transmitted to the cleaner body can be reduced, The noise of the cleaner itself can be reduced.

In addition, according to the second embodiment, the support in the axial direction after the anti-vibration rubber can be performed near the axis, and at the same time, the seal before the anti-vibration rubber can be performed near the axis, so that the vibration transmitted to the cleaner body can be reduced. Become. In addition, since sealing can be performed before the anti-vibration rubber and at the insertion part of the protruding intake hole of the fan case, there is less variation compared to the conventional sealing method by pressing the front end of the anti-vibration rubber and the partition plate. This makes it possible to achieve a high seal.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vacuum cleaner showing a first embodiment of the present invention, FIG. 2 is an exploded perspective view of the vacuum cleaner after a rubber vibration insulator,
FIG. 3 is a cross-sectional view of a vacuum cleaner showing a second embodiment of the present invention, FIG. 4 is an exploded perspective view after the anti-vibration rubber, FIG. FIG. 6 is a sectional view showing the structure of a conventional vacuum cleaner. 1 ... fan motor, 4 ... fan case, 7 ... motor, 10 ... cleaner body, 12 ... partition plate, 19, 43 ... communicating hole, 30 ... convex support, 31 ... penetrating Hole, 33 ...
34: After vibration-proof rubber, 41: Mounting hole, 42: Intake hole, 45: Before vibration-proof rubber.

Claims (2)

(57) [Claims] 1. A fan motor, and a two-part vacuum cleaner body which sandwiches and encloses the front and rear of the fan motor with a front and a rear of a vibration isolating rubber therebetween, and a rear shaft center of the fan motor. A convex support portion having a through hole in the radial direction is provided in the vicinity, and after the anti-vibration rubber, a cylindrical shape having flanges at both ends,
The post-vibration rubber is fitted into the through-hole of the convex support portion, and at least one of the bosses of the cleaner body has a shaft, and this shaft is inserted into the mounting hole after the vibration-proof rubber. Thus, the vacuum cleaner is configured to perform the vibration isolation support in the vicinity of the rear shaft center of the fan motor. 2. A vacuum cleaner according to claim 1, wherein an intake hole of a fan case constituting the fan motor is provided so as to protrude, and the intake hole is provided with a vibration-proof rubber front and supported by a partition plate of the cleaner body. .