JP2011250973A - Vacuum cleaner - Google Patents

Abstract

A vacuum cleaner having an internal configuration that realizes low-frequency noise countermeasures at low cost.
SOLUTION: A dust collecting chamber 5 for collecting dust, an electric blower chamber 6, and a case body 8 which is accommodated in the electric blower chamber 6 and covers the exhaust side of the electric blower 7 for generating suction air. The case body 8 includes a first case (not shown) and a second case (not shown) that hold the electric blower 7 so as to surround the electric blower 7 from the left and right sides, and the inside of the first case and the second case. Further, an upper first wall 16 and a rear first wall 17 are provided on the upper and rear sides of the electric blower 7 in order to suppress noise in the high frequency range above and behind the electric blower 7. When the plurality of walls are provided, a soundproof wall can be obtained simply by forming the upper first wall 16 and the rear first wall 17 with ribs inside the first case and the second case, and it is easy to assemble at low cost. Take measures against noise in the high frequency range while having the configuration Door can be.
[Selection] Figure 2

Description

  The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner with noise countermeasures taken.

  Conventionally, in this type of vacuum cleaner, a barrier that changes the direction of the exhaust flow from the electric blower is provided in the vacuum cleaner body that includes the electric blower chamber that houses the electric blower, and the length of the exhaust passage is reduced. By ensuring long, the noise countermeasure which absorbs the energy of a sound was taken while the noise which generate | occur | produced from the electric blower was discharged | emitted outside the unit through the exhaust passage (for example, refer patent document 1).

Japanese Patent Laid-Open No. 4-96721

  However, the configuration of the conventional vacuum cleaner is effective only for noise in the sound range emitted from the electric blower to the outside through the exhaust passage, and in a high frequency range that is harsh to the human ear. Regarding the noise, the sound emitted radially from the electric blower that is the sound source is transmitted through only the two walls of the outer shell and the barrier installed inside and released to the outside. In order to suppress noise in this high frequency range, it is effective to arrange multiple layers of walls and soundproofing materials between the electric blower and the outer shell. Since it is necessary to consider that noise does not leak from the gap, there is a problem that it leads to a large cost increase.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a vacuum cleaner having an internal configuration that realizes measures against high-frequency noise at low cost.

  In order to solve the above-described conventional problems, a vacuum cleaner according to the present invention includes a dust collection chamber that collects dust, an electric blower chamber, and an electric blower that is housed in the electric blower chamber and generates suction air. A case body that covers the exhaust side, and the case body includes a first case and a second case that hold the electric blower from the left and right sides; At least one wall body is provided on each of the upper and rear sides of the electric blower. In providing a plurality of walls for suppressing the noise in the high frequency range on the upper and rear sides of the electric blower, It is possible to make a soundproof wall simply by forming a wall body with ribs inside the second case, and it is possible to take measures against high frequency noise while having a structure that is easy to assemble at low cost.

  The vacuum cleaner of the present invention can provide a vacuum cleaner having an internal configuration that realizes measures against high frequency noise at low cost.

Whole perspective view of the electric vacuum cleaner in Embodiment 1 of this invention Central sectional view of the vacuum cleaner The perspective view of the case body of the vacuum cleaner Parts development of the case body Central sectional view of the case body Center sectional drawing of the case body of the vacuum cleaner in Embodiment 2 of this invention

  The first invention has a dust collection chamber for collecting dust, an electric blower chamber, a case body that is housed in the electric blower chamber and covers the exhaust side of the electric blower that generates suction air, and the case The body includes a first case and a second case that hold the electric blower so as to surround the left and right sides, and at least inside the first case and the second case, respectively above and behind the electric blower. When one wall is provided and a plurality of walls for suppressing noise in the high frequency range are provided above and behind the electric blower, the walls are formed with ribs inside the first case and the second case. It can be used as a soundproof wall alone, and measures against high frequency noise can be taken while having an inexpensive and easy-to-assemble structure.

  In particular, the second invention is located above and / or behind the electric blower of the first invention, and is provided with a soundproofing material in a space formed by being partitioned by a wall body. The effect of noise countermeasures can be further enhanced by a synergistic effect with the soundproofing material.

  In particular, the third invention is an electrical component that controls the operation of the electric blower in a space formed above or behind the electric blower of the first or second invention and partitioned by a wall body. It is possible to implement noise countermeasures while effectively reducing the size of the vacuum cleaner body by effectively utilizing the space formed by the wall.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is an overall perspective view of the electric vacuum cleaner according to Embodiment 1 of the present invention, FIG. 2 is a central sectional view of the electric vacuum cleaner, FIG. 3 is a perspective view of a case body of the electric vacuum cleaner, FIG. FIG. 5 is a development view of parts of the case body, and FIG. 5 is a central sectional view of the case body.

  1 and 2, the outer casing of the vacuum cleaner main body 1 of the electric vacuum cleaner according to the present embodiment is configured by a cover body 4 including a lower cover 2 and an upper cover 3. Inside the vacuum cleaner main body 1, a dust collection chamber 5 is formed in the front, and an electric blower chamber 6 is formed in the rear. The electric blower chamber 6 accommodates a case body 8 containing the electric blower 7. A main exhaust port 9 is provided above the cleaner body 1 for exhausting the exhaust emitted by the electric blower 7 to the outside.

  A connection pipe 32 provided at one end of a hose 31 is detachably connected to an intake port 30 provided in the vacuum cleaner body 1 and communicating with the dust collecting chamber 5, and the other end of the hose 31 is connected via an extension pipe 33. Then, it is connected to a floor nozzle 34 that sucks dust on the floor surface.

  3-5, the electric blower 7 is hold | maintained through the front supporter 10 and the back supporter 11 so that the exhaust side 14 of the electric blower 7 may be pinched | interposed into those inside from right and left by the 1st case 12 and the 2nd case 13. Thus, the case body 8 is formed. The case body 8 constitutes an exhaust portion 15 on the upper surface, and no other exhaust holes are provided.

  Inside the first case 12 and the second case 13, an upper first wall 16 is formed above the electric blower 7, and a rear first wall 17 and a rear second wall 18 are formed rearward. . A soundproof material 19 is installed in a space formed by the upper first wall 16 and the outer case of the case body 8. A space formed by the rear first wall 17 and the rear second wall 18 accommodates a printed circuit board 21 having an electronic component 20 for controlling the operation of the electric blower 7.

  About the vacuum cleaner in this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the vacuum cleaner is operated, the dust sucked together with the air through the floor nozzle 34 is collected in the dust collecting chamber 5, and only the clean air is exhausted from the exhaust side 14 of the electric blower 7. The As indicated by the arrows in FIG. 5, the exhaust from the electric blower 7 is first discharged to the lower side of the electric blower 7, passes between the rear second wall 18 and the outer case of the case body 8, and passes through the exhaust portion 15. The air is discharged from the main exhaust port 9 of the cover body 4 to the outside.

  Thus, by ensuring the length of the exhaust passage from the electric blower 7 to the main exhaust port 9, it is possible to attenuate the energy of the sound that is released outside the instrument by riding on the exhaust air.

  However, high-frequency noise that is annoying for human ears is emitted radially from the electric blower 7 that is a sound source. In general, the side surface of the cleaner body 1 is provided with a roller 22 for traveling and a cord reel (not shown) for storing a power cord (not shown) in parallel with the electric blower 7. Therefore, the noise that escapes upward or backward of the cleaner body 1 is larger than the noise that escapes in the lateral direction of the cleaner body 1.

  However, according to the present embodiment, the upper wall of the upper side of the electric blower 7, the outer wall of the case body 8, and the outer wall of the cover body 4 are formed. Can be prevented from coming out upward. Further, in the rear direction of the vacuum cleaner main body 1, four walls are formed: a rear first wall 17, a rear second wall 18, an outer case of the case body 8, and an outer case of the cover body 4. The noise can be prevented from falling backwards.

  Thus, according to the present embodiment, there is an effect of noise countermeasures against high frequency noise.

  In general, as in the present invention, when many walls are provided above or behind the electric blower 7, it is necessary to take care not to increase the number of parts or to leak noise from the gaps between the parts. However, according to the configuration of the present embodiment, the upper first wall 16, the rear first wall 17, and the rear second are responsible for noise countermeasures in the high frequency range. The wall 18 is formed inside the first case 12 and the second case 13, and is composed of only two parts, the first case 12 and the second case 13, and the gap between the parts is relatively small. Since it is within a limited range, there is little noise leakage from the gap.

  Further, since the first case 12 and the second case 13 are divided into parts so as to sandwich and hold the exhaust side of the electric blower 7 from the left and right, both the first case 12 and the second case 13 have their molds. The punching direction of the upper first wall 16, the rear first wall 17, and the rear second wall 18 is the same and the undercut does not occur. There is no need to do. From the above, it can be said that the noise countermeasures in the high frequency range are realized at a very low cost in the mold investment, the part molding cycle, and the assembly man-hour.

  In addition, since the resin wall and the soundproof material 19 have a different frequency range in which the soundproofing effect is exhibited, the soundproof material 19 is placed in the space formed by the upper first wall 16 and the outer shell of the case body 8. The soundproofing effect is enhanced by installing.

  Moreover, since the soundproofing material 19 can be reliably fixed by installing the soundproofing material 19 in the space surrounded by the wall, the assembly can also be performed efficiently.

  Furthermore, by accommodating the printed circuit board 21 having the electronic component 20 that controls the operation of the electric blower 7 in the space formed by the rear first wall 17 and the rear second wall 18, the inside of the case body 8 is accommodated. The formed space can be used without waste, the vacuum cleaner body 1 can be reduced in size, and the printed circuit board 21 is installed in the vicinity of the electric blower 7. Inevitably, it will play a role as a noise countermeasure.

(Embodiment 2)
FIG. 6: shows the center sectional drawing of the case body of the vacuum cleaner in the 2nd Embodiment of this invention. In addition, the same code | symbol is attached | subjected to the same part as the vacuum cleaner in the said 1st Embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 6, the electric vacuum cleaner according to the present embodiment is added to the upper first wall 16 in the first case 12 and the second case 13 of the case body 8 and above the electric blower 7. In addition to the rear second wall 23 and the rear third wall 18, the rear third wall 25 and the rear fourth wall are added to the rear second wall 18 and the rear second wall 18. The other configurations are the same as those of the electric vacuum cleaner in the first embodiment.

  According to the present embodiment, as described above, by adding many walls inside the first case 12 and the second case 13, it is possible to prevent the transmission of noise in the high frequency range, which is effective as a noise countermeasure. is there.

  Further, according to the configuration of the first case 12 and the second case 13 in the above embodiment, it is easy to add multiple soundproof walls as shown in FIG. It can be realized easily and inexpensively.

  As described above, the vacuum cleaner according to the present invention can take measures against high-frequency noise while having an inexpensive and easy-to-assemble structure, so that it can be used for vacuum cleaners for home and business use. Useful.

5 Dust Collection Room 6 Electric Blower Room 7 Electric Blower 8 Case Body 12 First Case 13 Second Case 14 Exhaust Side 16 Upper First Wall (Wall Body)
17 Rear first wall (wall)
18 Rear second wall (wall)
23 Upper second wall (wall)
24 Upper third wall (wall)
25 Rear third wall (wall)
26 Rear fourth wall (wall)

Claims (3)

A dust collection chamber for collecting dust, an electric blower chamber, and a case body that is accommodated in the electric blower chamber and covers an exhaust side of the electric blower that generates suction air, and the case body includes the electric blower The first case and the second case are provided so as to surround the left and right sides, and at least one wall body is provided inside the first case and the second case, above and behind the electric blower. Electric vacuum cleaner. The vacuum cleaner according to claim 1, further comprising a soundproof material in a space formed above and / or behind the electric blower and partitioned by the wall body. The electric vacuum cleaner according to claim 1 or 2, further comprising an electrical component that controls an operation of the electric blower in a space that is positioned above or behind the electric blower and is partitioned by a wall body.

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