JPS6321225Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field of the invention This invention includes a storage case in which accessories such as a suction hose are stored, and can be operated with the vacuum cleaner body placed in the storage case. The present invention relates to vacuum cleaners, and particularly to vacuum cleaners that reduce noise.

Prior Art There are many different sources of noise in vacuum cleaners, such as the intake noise of a floor suction device and the rotating noise of an electric blower.
Among these, it is known that the exhaust noise from electric blowers is the main source of noise.

Conventionally, countermeasures against exhaust noise have been taken, such as arranging a sound absorbing material such as urethane foam near the exhaust hole or detouring the exhaust gas to muffle the sound, but these measures have not been sufficiently effective.

Summary of the invention Therefore, this invention has been developed to provide accessories such as suction hoses.
A vacuum cleaner that is equipped with a storage case that can be stored inside the vacuum cleaner, and that can be mounted with the vacuum cleaner main body placed on the storage case, in which exhaust air discharged from the exhaust port of the vacuum cleaner main body is disposed in the storage case. The purpose is to provide a duct that guides and discharges the waste outside the storage case, and to reduce noise through the effect of the duct.

Embodiment of the invention Hereinafter, an embodiment of the invention will be described with reference to FIGS. 1 to 4. In Figures 1 to 4, 1 is on top;
A vacuum cleaner main body formed by lower cases 2 and 3, which has an exhaust port 4 at the rear lower part and a power cord outlet 5 at the rear upper part, and a cord reel (not shown) for storing a blower 6 inside. has been done. 7 is up,
The main body 1 is sandwiched between the assembly parts of the lower cases 2 and 3.
A bumper made of synthetic rubber located on the periphery of the main body 1 ensures airtightness inside and outside the main body 1 at the upper and lower case 2 and 3 assembly sections. 9 is a wheel attached to the lower surface of the rear end of the lower case 3; 10 is a flexible hose 11;
and a connecting bent pipe 12 fixed to the end of the hose 11 and bent at approximately 105 degrees. Reference numeral 13 denotes an opening/closing lid that freely opens and closes the upper surface of the tip of the upper case 2, and 14 denotes a suction hose 1 formed on the upper surface of the opening/closing lid 13.
The suction hose 10 can be detachably attached to the insertion port 1, and the structure is such that it can freely rotate 360 degrees in a horizontal plane when attached. 15 is a chaster attached to the lower surface of the end of the lower case 3, and 16 is a power plug.

On the other hand, 8 is a box-shaped storage case with an open top for storing the suction hose 10 and the like removed from the main body 1.

As shown in FIG. 2, the power cord outlet 5 and suction hose insertion port 14 of the vacuum cleaner main body 1 are exposed to the outside of the storage case 8, and the exhaust port 4 is located inside the storage case 8. , the main body 1 can be placed and supported on the upper edge of the storage case 8. In addition, when the main body 1 is placed and supported on the storage case 8, it is locked by an engaging part (not shown) provided on the storage case 8, and the release can be performed by a pedal 20 set on the outer periphery of the lower part of the storage case 8. It's summery. Furthermore, when the vacuum cleaner main body 1 is attached to the storage case 8, the bumper 7 comes into close contact with the upper edge of the storage case 8, making it possible to maintain airtightness inside the storage case 8 and to prevent the vibration of the main body 1 from reaching the storage case 8. It is designed to prevent it from being transmitted.

Reference numeral 19 denotes a noise-muffling duct provided inside the storage case 8, one end of which connects to the exhaust port 4 located at one end in the longitudinal direction inside the storage case 8 with the main body 1 placed and supported on the storage case 8. The other end communicates with an exhaust port 17 provided at a lower position on the side surface of the other end of the storage case 8 in the longitudinal direction.

This duct 19 is formed by a partition wall 18 attached inside the storage case 8 .

This partition wall 18 has a vertical portion 18A extending vertically along the inner surface of one end wall in the longitudinal direction of the storage case 8.
, a horizontal portion 18B that is continuous with the lower end of the vertical portion 18A and extends along the inner surface of the bottom wall of the storage case 8, and a stepped portion 18C that is continuous with the tip of the horizontal portion 18B and extends upward and horizontally. , consists of.

By providing this stepped portion 18C,
The duct 19 has an enlarged cross-sectional area near the exhaust port 17 of the storage case 8.

22 is a breathable urethane foam attached to the inner wall surface of the storage case 8 at the exhaust port 17 position;
It is provided for the purpose of sound absorption and dust collection.

Next, the operation of the above embodiment will be explained.

When the vacuum cleaner body 1 is attached to the storage case 8, the hose outlet 14 and the cord outlet 5
is exposed to the outside of the storage case 8, and the dust suction hose 10 can freely rotate through 360 degrees, so the area around the main body 1 can be cleaned in that state. At this time, the exhaust from the exhaust port 4 of the main body 1 is discharged into the storage case 8, but since the bumper 7 seals between the main body 1 and the storage case 8, all the exhaust is guided into the duct 19. .
In addition, since the bumper 7 is made of synthetic rubber,
This prevents vibrations generated in the main body 1 from being transmitted to the storage case 8. In the exhaust gas guided into the duct 19, part of the acoustic energy is converted into thermal energy and the sound is absorbed in the duct 19, thus becoming a kind of sound absorbing duct and reducing exhaust noise. Furthermore, since the cross-sectional area of the duct 19 near the storage case exhaust port 17 is increased, the exhaust flow velocity is reduced, and the exhaust gas is absorbed through the urethane foam 22, absorbs dust, and is emitted from the storage case exhaust port 17. be done. At this time, as mentioned above, since the exhaust flow rate is slow, the pressure loss when passing through the urethane foam 22 is reduced compared to when the flow rate is high, and at the same time, since the flow rate is slow, the dust collection efficiency can also be increased. can.

According to this configuration, when the vacuum cleaner main body 1 is operated with the storage case 8 supporting it, exhaust air from the main body 1 is transferred to the duct 1 provided in the storage case 8.
9, the acoustic energy within the duct 19 is converted into thermal energy, which absorbs the sound and reduces exhaust noise. Further, by forming the duct 19, the walls of the storage case 8 are partially doubled, so that the strength of the storage case 8 is increased. Furthermore, even when the main body 1 is dropped while attached to the storage case 8, the main body 1 is supported by the vertical portion 18A of the partition wall 18 constituting the duct 19, and the main body 1 collapses into the storage case 8. 8 will not be damaged.

Note that if a sound absorbing material is attached inside the duct 19, the noise can be further reduced.

Furthermore, according to the embodiment described above, the storage case 8
By increasing the cross-sectional area of the duct 19 near the exhaust port 17, the exhaust flow velocity is lowered.
The pressure loss of the exhaust gas when it passes through the urethane foam 22 attached to the exhaust port 17 of the storage case 8 can be reduced, and the dust collection efficiency can be increased, resulting in cleaner exhaust gas. . Furthermore, since the exhaust flow rate is slow, the discomfort caused by exhaust air blowing from the exhaust port 17 can be reduced.

Furthermore, since the vacuum cleaner main body 1 and the storage case 8 are in close contact via the bumper 7 made of synthetic rubber attached to the main body 1, it is possible to prevent vibrations from the main body 1 from being transmitted to the storage case 8. , it is possible to prevent the generation of vibration noise in the storage case 8, and also serves as a seal between the main body 1 and the storage case 8, so that the exhaust air is reliably guided into the duct 19 and noise inside the duct 19 is prevented. can be reduced. Furthermore, since the main body 1 and the storage case 8 are in contact with each other via the bumper 7, the main body 1 and the storage case 8 will not be damaged by vibrations or shocks during transportation.

Next, FIGS. 5 and 6 show other embodiments of the duct 18, respectively.

That is, in FIG. 5, there is a recess 18 in a part of the horizontal part 18B of the partition wall 18 that constitutes the duct 19.
By forming this recessed portion 18D, a necked portion 23 having a small cross-sectional area is formed in a part of the duct 18 and is sandwiched between the hollow portion 21. According to this configuration, the exhaust gas guided into the duct 19 is constricted by the neck part 23 and expands in the cavity part 21. Therefore, if it is made to correspond to an equivalent model, the neck part 23 is the mass and the cavity part 21 is the action of the spring. Since the sound energy is consumed by the short circuit and the sound is muffled, it becomes a kind of resonant muffler and has the effect of reducing exhaust noise. Further, by providing the unevenness of the neck portion 23 and the hollow portion 21 in the middle of the duct 19, the strength of the duct 19 portion can be increased.

In FIG. 6, the part of the partition wall 18 constituting the duct 19 that is continuous with the lower end of the vertical part 18A is formed as a tapered part 18E that gradually slopes upward toward the exhaust port 17.
The cross-sectional area of the exhaust port 9 gradually increases toward the exhaust port 17.

According to this configuration, the cross-sectional area of the duct 19 is smoothly expanded toward the exhaust port 17 of the storage case 8, so that the exhaust gas guided into the duct 19 forms turbulent flow or vortex flow and becomes secondary. It expands to prevent noise generation, forming a cavity-shaped muffler in noise prevention technology, and exhibiting a great sound-damping effect.

Further, in this embodiment, the partition wall 18 is formed with a tapered portion 18E, but by setting and storing a clearance nozzle as an accessory in the low slope portion, the inner bottom surface of the storage case 8 can be substantially reduced. It has the advantage that it can be made into a flat surface, and that when other accessories such as a hose are stored from above, it can be easily pulled out from inside the storage case 8.

Effects of the invention As explained above, according to the invention, a storage case is provided in which accessories such as a suction hose are stored, and the vacuum cleaner can be operated with the main body placed in the storage case. In the vacuum cleaner, a duct is provided in the storage case to guide the exhaust gas discharged from the exhaust port of the vacuum cleaner body and discharge it outside the storage case, so the effect of this duct can reduce exhaust noise. This has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the structure of one embodiment of the main body of the vacuum cleaner according to the present invention, Fig. 2 is a front view showing the assembled state of the main body and storage case of the same vacuum cleaner, and Fig. 3 is a perspective view of the same vacuum cleaner main body as above, FIG. 4 is a perspective view of the above main body and storage case assembled, and FIGS. 5 and 6 are partial front views showing other embodiments of the present invention, respectively. It is a diagram. 1...Vacuum cleaner body, 4...Exhaust port, 5...
Cord drawer port, 8... Storage case, 14... Inlet, 17... Exhaust port, 18... Partition wall, 1
9...Duct.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A storage case with an open top for storing accessories, with the suction hose insertion port and power cord outlet of the vacuum cleaner body exposed to the outside of the storage case, and an exhaust In the vacuum cleaner configured such that the mouth is located inside the storage case and the vacuum cleaner main body is placed and supported on the upper edge of the storage case, one end communicates with the exhaust port and the other end is located inside the storage case. A vacuum cleaner characterized in that the vacuum cleaner is provided with a noise-muffling duct that communicates with an exhaust port provided in the storage case. (2) The electric vacuum cleaner according to claim 1 of the utility model registration claim, characterized in that the outer periphery of the electric vacuum cleaner body is provided with a bumper made of synthetic resin that is brought into close contact when the body is attached to a storage case. Machine. (3) The vacuum cleaner according to claim 1 or 2, wherein the duct has a configuration in which the cross-sectional area is expanded near the storage case exhaust port. (4) The duct has a configuration in which a neck portion with a small cross-sectional area is sandwiched by a hollow portion. The vacuum cleaner mentioned. (5) The vacuum cleaner according to any one of claims 1 to 3 of the utility model registration claim, wherein the duct has a configuration in which the cross-sectional area gradually increases toward the storage case side exhaust port. .