JPS6130426Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a vacuum cleaner, and more particularly, to a noise reduction structure for an electric blower.

[Technical background of the invention and its problems]

Conventionally, a vacuum cleaner equipped with this type of electric blower is divided into a dust collection part b, which has a filter a inside, and an electric blower c, as shown in FIG. and a main body case d, which is divided along the length direction.
, fit the electric blower c fitted with support rubber e into the rib g protruding from the inner periphery of one case member of the divided main case d, and cover the other case member from above. Because the support rubber e, which is a soft material, has no elasticity, the rib g, which serves as a support for the electric blower c, can be easily turned over and assembled. In addition, it is necessary to apply a seal etc. between the seam of the main body case d and the filter packing f.Furthermore, the electric blower c consists of an electric part _c1 and a blower part _c2 , and the electric blower c ₁ is covered with a breathable noise-reducing tube h, and the fan in the blower section _c2 is covered with a fan cover, but the blower section _c2 , which makes the most noise, is exposed from the fan cover, causing the problem of insufficient sound insulation effect. It was hot.

[Purpose of invention]

The present invention was developed to solve these problems, and the suction side of the electric blower is airtightly supported and housed in a main case that is divided along the length, and one end is connected to the main case. When installing a cylindrical case with a ventilation hole that communicates the dust collection part and opening the other end to the exhaust side, and fitting the main case divided along the length direction, fit the main case to the cylindrical case. It is easy to assemble by simply holding the cylindrical case, and the ventilation hole at one end of the cylindrical case is communicated with the dust collection part, so there is no need to use a sealant etc. at the joint between the main case and the cylindrical case. To provide a vacuum cleaner that can block the noise of an electric blower with a heavy case structure.

[Summary of the idea]

The present invention consists of a dust collection section with a filter inside, a main body case that communicates with the dust collection section and is divided along the length direction, and an electric blower installed inside the main case, which is attached to an end plate at one end. A cylindrical case having a vent communicating with the dust collecting section and having the other end communicated with the exhaust side of the main body case, and a cylindrical case provided inside the cylindrical case, the suction side of the electric blower being connected to the vent. The electric blower is equipped with an elastic annular support member that is supported in airtight communication with the electric blower, and the entire electric blower is housed and supported within a cylindrical case and provided within the main body case.

[Example of idea]

Next, the configuration of an embodiment of the present invention will be explained with reference to FIG. 2.

Reference numeral 1 denotes a main body case, and this main body case 1 is composed of case members 1 _a and 1 _a that are divided into upper and lower or left and right parts along the length direction. A cylindrical case 4 is fitted, and the front part of this cylindrical case 4 is connected to the main body case 1.
It is fitted into the front opening 6 of. A ventilation hole 7 is opened in the center of the end plate 5 on the front side of the cylindrical case 4, and the rear end communicates with an exhaust passage 8 formed at the rear of the main body case 1. It communicates with an exhaust hole 11 formed at the rear end of the case 1.

Further, a cord storage chamber 9 is defined at the rear of the main body case 1, leaving an exhaust passage 8 around it, and a cord reel 10 is mounted on a shaft within this cord storage chamber 9.

Further, inside the cylindrical case 4, a space 1 is provided around the periphery.
2, and an electric blower 13 is housed therein, and one end of the electric blower 13 on the side of the fan case 14 is held by ribs 27 formed protruding from the end plate 5 of the cylindrical case 4 to the inner peripheral surface at appropriate intervals. The electric blower 13 is airtightly supported by an elastic annular support 15 which also serves as packing, and the suction side and exhaust side of the electric blower 13 are held airtight. Further, the rear end of the other end of the electric blower 13 on the side of the electric part 16 is fitted and supported in a recess 28 formed in the outer wall of the cord storage chamber 9 via an elastic support 17. Furthermore, the outer periphery of the electric part 16 of this electric blower 13 is surrounded by a breathable muffling tube 18 made of a sound-absorbing material.

Next, reference numeral 19 denotes a dust collecting section, which is composed of a case body that is detachably attached to the front part of the main body case 1 via a clamp 20. A suction port 21 is opened at the front end of this dust collecting section 19, and a suction port 21 is opened at the front end of the dust collecting section 19. The opening edge of a filter case 24 containing a filter 23 is fitted into the end opening 22 via an annular packing 25, and the outer edge 26 of the annular packing 25 surrounds the ventilation hole 7 and fits into the end of the cylindrical case 4. It is press-fitted to the face plate 5 to keep the dust collecting section and the suction side of the electric blower 13 airtight.

Next, the operation of this embodiment will be explained.

First, when assembling, the main case 1 is split into one case member 1 that is split into left and right or top and bottom parts along the length direction.
A cylindrical case 4 housing an electric blower 13 is fitted to _a , and the other case member 1 a is fitted to a portion of the cylindrical case 4 that protrudes from _{the case member 1 a ,}
The case members 1 _a and 1 _a are brought together and engaged by an engaging means (not shown), and the dust collecting section 19 is connected to the front part of the main body case 1 thus assembled via the clamp 20 .

Next, the dust sucked into the dust collection part 19 from the suction port 21 is collected by the filter 23, and the passed air is blown out from the ventilation port 7 to the rear of the fan case 14, and from the silencer tube 18 to the cylindrical case 14. The air is exhausted to the rear end opening of the exhaust gas, and is exhausted to the outside through the exhaust hole 11 via the exhaust path 8. At this time, the vibrations of the electric blower 13 are absorbed by the elastic annular support 15, and the noise is blocked by the muffling tube 15, and the noise is blocked by the muffling tube 18, preventing the generation and transmission of noise to the outside. be done. In addition, the packing 25 of the filter case 24 is a cylindrical case 4 housed in the main body case 1 which is divided.
Since it is in contact with the end plate 5 of the main body case 1, there is no possibility of dust entering the seam of the main body case 1.

[Effect of idea]

According to the present invention, the electric blower is housed in a cylindrical case and airtightly supported by an elastic annular support, and this cylindrical case is housed in the main body case, so the electric blower is covered with a double structure. In particular, since the noisy fan case part is covered integrally, the sound insulation effect is good and noise can be prevented.In addition, when combining the main body case that is divided along the length direction, the electric blower is stored in a cylindrical case in advance, and this electric blower is supported by an elastic annular support and stored in the cylindrical case, so when the main case is fitted into the cylindrical case from the top and bottom or from the left and right, it has flexible elasticity. This eliminates the poor workability of fitting the main body case to the electric blower via the support, and furthermore, the dust collection part of the main case and the suction side of the electric blower are airtightly communicated at one end of the cylindrical case. A vent is formed and the other end is opened to communicate with the exhaust side of the electric blower, so the air sucked in from the dust collection section through the vent passes through the cylindrical case and is exhausted. The air-cooling effect of the internal electric blower can be enhanced, and since the ventilation port of the cylindrical case airtightly communicates the dust collection section with the suction side of the electric blower, the filter packing of the dust collection section can be removed from the cylindrical case. The sealing effect can be ensured because it does not touch the seam of the main body case which is in contact with the end face plate and is divided along the length direction.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of a conventional vacuum cleaner, and FIG. 2 is a longitudinal sectional view of a vacuum cleaner showing an embodiment of the present invention. 1... Main body case, 4... Cylindrical case, 5...
End plate, 7...Vent, 13...Electric blower, 1
5...Elastic annular support, 19...Dust collecting section, 23...
...filter.

Claims (1)

[Scope of utility model registration request] A dust collection section with a filter inside, a main body case that is communicated with this dust collection section and divided along the length direction, and an electric blower provided in the main case and housing the dust collection section on one end plate. a cylindrical case that is open with the other end communicating with the exhaust side of the main body case, and a cylindrical case that is provided within the cylindrical case and that communicates the suction side of the electric blower with the vent in an airtight manner; 1. A vacuum cleaner comprising: an elastic annular support for supporting the vacuum cleaner.