JP2013172806A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner reduced in noise while maintaining high suction force.SOLUTION: A vacuum cleaner includes an electric fan 13 for sucking air, and a holder 12 provided on a rear surface of the electric fan 13 and holding the electric fan 13 in a cleaner body 5, wherein the holder 12 includes a wall body 22 extending so as to cover an opening 23 while having the opening 23 of the electric fan 13 and a gap 2. A sound absorber 32 is provided on the inside or outside of the wall body 22, whereby the air exhausted from the opening 23 of the electric fan 13 effectively flows from the gap 2 between the opening 23 and the wall body 22, and the noise with exhaust air from the opening 23 is shut and absorbed by the sound absorber 32 provided in the wall body 22 and the wall body 22. Thereby the vacuum cleaner reduced in noise while maintaining high suction force can be provided.

Description

  The present invention relates to a vacuum cleaner that reduces noise while maintaining a high suction force of an electric blower.

  Conventionally, this type of vacuum cleaner reduces noise of an electric blower by providing a sound absorbing material in an opening of the electric blower or a case body that houses the electric blower (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 57-202858

  However, since the conventional configuration is a simple method in which a soft sound-absorbing material is fitted on the outer periphery of the electric blower, the sound-absorbing material closes the opening of the electric blower, so that exhaust can be discharged efficiently. The problem is that the suction force of the vacuum cleaner is lost and the noise generated from the electric blower leaks to the outside due to a large gap between the sound absorbing material and the opening of the electric blower. Had. In addition, this problem has led to the problem that individual variations in suction force and noise increase during the manufacture of vacuum cleaners.

  The present invention solves the above-described conventional problems, and provides a vacuum cleaner that reduces noise while maintaining a high suction force by reliably positioning a sound absorbing material at an optimal position with a simple configuration. With the goal.

  In order to solve the conventional problems, a vacuum cleaner according to the present invention includes a vacuum cleaner body, an electric blower that sucks air from an intake port and exhausts the air from an opening, and an electric blower provided on a rear surface of the electric blower. A holding body for holding the inside of the cleaner body, and a wall body provided integrally with the holding body and extending so as to cover the opening while having a gap with the opening of the electric blower. And a sound absorbing material is provided inside or outside the wall body.

  As a result, while the air discharged from the opening of the electric blower efficiently flows out from the gap between the opening and the wall, noise generated from the electric blower is sound-insulated by the sound absorbing material provided on the wall and the wall. Since the sound is absorbed, it is possible to provide a vacuum cleaner that reduces noise while maintaining a high suction force.

  The vacuum cleaner of the present invention has a configuration in which noise is reduced while maintaining a high suction force.

Whole perspective view of the vacuum cleaner in the 1st Embodiment of this invention Horizontal sectional view of the vacuum cleaner Cross-sectional view of the vacuum cleaner Same as above, cross-sectional view around the electric blower part of the vacuum cleaner The perspective view which shows the assembly state of the holding body and sound-absorbing material of a vacuum cleaner The development view which shows the state before an assembly of the electric blower of a vacuum cleaner, a holding body, and a sound-absorbing material The perspective view which shows the assembly state of the electric blower, holding body, and sound-absorbing material of a vacuum cleaner The central sectional view of the vacuum cleaner

  1st invention is a vacuum cleaner main body, the electric blower which attracts | sucks air from an inlet port, and exhausts it from an opening part, and the holding | maintenance for hold | maintaining the said electric blower provided in the rear surface of the said electric blower inside the said vacuum cleaner main body And a wall body provided integrally with the holding body and extending so as to cover the opening portion while having a gap with the opening portion of the electric blower, and a sound absorbing material inside or outside the wall body The sound-absorbing material provided on the wall body and the noise generated from the electric blower while the air discharged from the opening portion of the electric blower efficiently flows out from the gap between the opening portion and the wall body. Therefore, noise can be reduced while maintaining a high suction force.

  In the second invention, in particular, by providing a grid-like opening hole in the wall body of the first invention, a path through which the air discharged from the opening of the electric blower passes through the opening hole of the wall body is provided. The exhaust from the electric blower can flow out more efficiently, and the exhaust passing through the opening hole passes through the sound absorbing material at the same time, so that the effect of sound absorption by the sound absorbing material can be improved.

  In particular, the third invention is provided with a locking portion protruding from the wall body in the vicinity of the opening hole of the wall body of the second invention, and the sound absorbing material has a hole at a position matching the locking portion of the wall body. In addition, since the sound absorbing material is held by the locking portion, the exhaust gas passing through the opening hole passes through the sound absorbing material at the same time, so that noise on the exhaust air is absorbed and reduced by the sound absorbing material. In addition, the sound absorbing material can be fixed to the wall body by a simple method by inserting a locking portion protruding from the wall body into the hole of the sound absorbing material, and the sound absorbing material is provided with a material that impedes air permeability such as an adhesive. Since it is not necessary, the exhaust from the electric blower can be efficiently discharged.

  In the fourth invention, in particular, the wall body according to any one of the first to third inventions is provided with one or more ribs extending to the outer wall of the electric blower, so that warping or electric operation during the molding of the wall body is achieved. It is possible to prevent the position of the wall body from being displaced with respect to the outer wall of the electric blower due to the exhaust wind pressure load of the blower, and to obtain the sound insulation and sound absorption effects by the wall body and the sound absorbing material without any variation.

  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)
In FIG. 1, an electric vacuum cleaner 100 includes a vacuum cleaner body 5 including an electric blower (not shown) that generates suction air, a suction tool 101 that sucks dust on a surface to be cleaned, and one end at the suction tool 101. A telescopic or jointable extension tube 102 that is detachably connected, one end of the extension tube 102 is detachably connected to the other end of the extension tube 102, and the other end is connected to a suction port 103 provided at the front of the cleaner body 5. The hose 104 is detachably connected.

  Wheels 105 for traveling are rotatably attached to both side surfaces on the rear side of the cleaner body 5. A traveling caster 106 is attached to the front portion of the lower surface of the cleaner body 5. Furthermore, a main body handle 107 that is used when the user carries the cleaner main body 5 is provided at an upper front portion of the cleaner main body 5.

The suction tool 101 includes a rotary brush 108 that scrapes dust on the surface to be cleaned, and a rotary brush 10.
And a drive motor 109 that rotationally drives 8.

  At the end of the hose 104 on the side of the extension tube 102, a tip pipe 111 having a handle 110 that is gripped by a user during cleaning is provided. Further, a connection pipe 112 that is detachably connected to the suction port 103 of the cleaner body 5 is provided at the end of the hose 104 on the cleaner body 5 side.

  As shown in FIGS. 2 and 3, the cleaner body 5 includes a lower member 6 that forms a lower surface of the cleaner body 5, an upper member 7 that forms an upper surface behind the lower member 6, and an upper surface of the dust collection chamber 8. The lid body 9 covers the upper surface of the upper member 7 and forms the upper surface of the cleaner body 5, and the cover body 10 forms the side surface of the cleaner body 5. The rear portion of the lid body 9 is pivotally supported by the upper member 7 so as to be rotatable.

  At the rear of the cleaner body 5, there is provided an electric blower chamber 14 containing an electric blower 13 that generates suction air. In addition, a dust collection chamber 8 in which a dust collection bag 15 for collecting dust is detachably disposed is provided at the front portion of the cleaner body 5.

  The electric blower 13 mainly includes a fan 17 that generates suction air, an air guide 18 that rectifies the airflow discharged from the fan 17, a motor 19 that rotationally drives the fan 17, and the fan 17 and air guide 18. The fan case 20 and the motor 19 are included, and the motor case 21 is attached to the fan case 20 in a secret manner.

  Further, the motor case 21 is provided with two openings 23 on the side surface of the electric blower 13 on the side of the electric blower 13 for discharging suction air that has passed through the motor 19 of the electric blower 13.

  As shown in FIG. 3, an upper case 24 that covers the upper portion of the electric blower 13 and a lower case 25 that covers the lower portion of the electric blower 13 are provided on the outer periphery of the electric blower 13. And it is arrange | positioned in the electric blower chamber 14 in the state clamped by the lower case 25. FIG.

  As shown in FIGS. 2 and 3, the front part and the rear part of the electric blower 13 are provided with a front support 26 and a rear support 27 made of an elastic material, respectively. 27 is sandwiched between the upper case 24 and the lower case 25.

  As shown in FIGS. 2 and 6, the post-support 27 is fitted and fixed to the groove 16 at the rear of the holding body 12 fixed to the rear surface of the electric blower 13 with the two screws 11.

  As shown in FIGS. 2, 3, and 7, the holding body 12 has two left and right wall bodies 22 extending so as to cover the opening 23 while having the gap 2 and the opening 23 of the electric blower 13. The wall body 22 is provided with lattice-shaped opening holes 28.

  As shown in FIGS. 5, 6, and 7, the holding body 12 is provided with three locking portions 31 that protrude outwardly with respect to the outer periphery of the electric blower 13, and two of them are the wall 22. Located in the vicinity of the opening hole 28. A sound absorbing material 32 having air permeability is provided outside the wall body 22, and the sound absorbing material 32 is placed outside the wall body 22 by fitting the hole 33 of the sound absorbing material 32 into the engaging portion 31 of the holding body 12. It is held in a covered state.

  As shown in FIGS. 4 and 5, a rib 34 extending to the outer case of the motor case 21 of the electric blower 13 is provided inside the wall body 22 to regulate the position of the wall body 22.

  Further, as shown in FIG. 8, a discharge port 29 for discharging the suction air discharged from the opening 23 is provided in the lower portion of the lower case 25. In addition, a main exhaust port 30 for discharging the suction air discharged from the discharge port 29 to the outside of the cleaner body 5 is provided at the rear portion of the cleaner body 5.

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

  When the operation of the vacuum cleaner 100 is started by the user, the motor 19 of the electric blower 13 is driven and the fan 17 is driven to rotate. Dust on the surface to be cleaned is sucked from a suction port (not shown) provided on the lower surface of the suction tool 101 and flows into the cleaner body 5 through the extension pipe 102 and the hose 104 to collect the dust. It is collected by the bag 15.

  When the fan 17 is rotationally driven by the motor 19, outside air is sucked into the electric blower 13 from the air inlet 3 provided in the electric blower 13, and suction air is generated in the electric blower 13. The suction air generated by the electric blower 13 passes through the inside of the fan 17 and is discharged from the outer peripheral side of the fan 17 to the outside of the fan 17. The suction air discharged to the outside of the fan 17 is rectified by the air guide 18, passes through the inside of the motor 19, and is discharged from the opening 23 provided in the motor case 21 to the outside of the electric blower 13. .

  A part of the suction air discharged from the opening 23 passes through the gap 2 between the opening 23 and the wall body 22 and is discharged from the discharge port 29 provided in the lower case 25. The other suction air passes through the opening hole 28 of the wall body 22, then passes through the sound absorbing material 32 provided outside the wall body 22, and is discharged from the discharge port 29 provided in the lower case 25. The suction air discharged from the discharge port 29 is discharged from the main exhaust port 30 to the outside of the cleaner body 5.

  When the user uses the electric vacuum cleaner from the opening 23 of the electric blower 13 such as vibration sound, rotation sound by the motor 19, wind noise generated when the suction air passes through the fan 17 or the air guide 18 and the like. Noise that feels unpleasant is generated, and reducing this noise is an important issue for providing a vacuum cleaner that is easy to use.

  This noise can be reduced by installing a sound absorbing material on the lower case 25 and the upper case 24 covering the electric blower 13, the upper member 7 and the lower member 6 forming the outline of the cleaner body 5, etc. However, since it is necessary to use a large number of sound absorbing materials, it becomes expensive, and when the soft sound absorbing material is installed, it may cause a variation in noise effect.

  In the present embodiment, the sound absorbing material 32 is provided on the side facing the opening 23 of the electric blower 13 that is the source of the generated noise, and the opening hole 28 of the wall 22 is extended from the holding body 12. Thus, the noise is effectively reduced by installing the opening 23 and the gap 2 so as to overcome these problems.

  In the present embodiment, a part of the suction air discharged from the opening 23 can pass through the gap 2 between the opening 23 and the wall body 22 and can be efficiently discharged to the discharge port 29 provided in the lower case 25. The flow of the suction air is not disturbed. At this time, since the opening 23 is covered with the wall 22 provided with the sound absorbing material 32 with the gap 2 therebetween, the noise emitted from the opening 23 is blocked by the wall 22 and the sound absorbing material 32 absorbs the sound. To exert the effect.

Since the other suction air passes through the opening hole 28 of the wall body 22 and passes through the sound absorbing material 32 provided outside the wall body 22, the noise on the suction air is reduced when passing through the sound absorbing material 32. At the same time, it does not block the momentum of the suction air at all, but it efficiently discharges the suction air by flowing the suction air to some extent, and also prevents the generation of new sound due to the occurrence of turbulence. These effects can reduce noise while maintaining a high suction force.

  Further, the suction air can be discharged more efficiently by widening the gap 2 between the opening 23 and the wall body 22, and the suction air passing through the sound absorbing material 32 by narrowing the gap 2 between the opening 23 and the wall body 22. Since the noise can be further reduced by increasing the ratio of the ratio, the effect can be easily obtained by changing the position of the wall body 22 depending on the specifications of the vacuum cleaner to be developed and the characteristics of the electric blower 13 to be used. Because it can be adjusted, it has very high applicability.

  As a method of holding the sound absorbing material 32, the wall body 22 extending from the holding body 12 of the electric blower 13 so as to cover the opening 23 of the electric blower 13 is used. Therefore, an inexpensive configuration can be obtained. In addition, since the engaging portion 31 of the wall body 22 is held in the hole of the sound absorbing material 32, the assembly is easy, and the sound absorbing material 32 is provided with a material that impedes air permeability such as an adhesive. Therefore, the exhaust from the electric blower 13 can be efficiently discharged.

  In addition, since ribs 34 extending to the outer case of the motor case 21 of the electric blower 13 are provided inside the wall body 22, due to warpage during molding of the wall body 22, exhaust air pressure load of the electric blower 13, etc. It is possible to prevent the displacement of the wall body 22 from occurring with respect to the outer shell of the electric blower 13 and reliably acquire the effects of the wall body 22 and the sound absorbing material 32 without variation.

  In the description of the above-described embodiment, the sound absorbing material 32 is disposed outside the wall body 22 by projecting the locking portion 31 projecting from the holding body 12 toward the outside with respect to the outer periphery of the electric blower 13. Although described in the configuration, the present invention is not limited to this configuration, and the engaging portion 31 that protrudes from the holding body 12 extends inward with respect to the outer periphery of the electric blower 13, and the sound absorbing material 32 is disposed inside the wall body 22. The sound absorbing effect by the sound absorbing material 32 can be obtained in the same manner.

  As described above, the vacuum cleaner according to the present invention can reliably position the sound absorbing material at an optimum position with a simple configuration, and thus the use of the vacuum cleaner that reduces noise while maintaining a high suction force. It can also be applied to.

DESCRIPTION OF SYMBOLS 3 Air inlet 12 Holding body 13 Electric blower 22 Wall body 23 Opening part 28 Opening hole 31 Locking part 32 Sound absorbing material 33 Hole 34 Rib

Claims (4)

A vacuum cleaner main body, an electric blower that sucks air from an intake port and exhausts it from an opening, a holding body that is provided on a rear surface of the electric blower and holds the electric blower inside the vacuum cleaner body, and the holding body A wall body provided integrally with the opening portion of the electric blower and extending so as to cover the opening portion while having a gap,
A vacuum cleaner characterized in that a sound absorbing material is provided inside or outside the wall. The vacuum cleaner of Claim 1 which provided the grid | lattice-like opening hole in the wall body. A locking portion protruding from the wall body is provided in the vicinity of the opening hole of the wall body, the sound absorbing material is provided with a hole at a position matching the locking portion of the wall body, and the sound absorbing material is held by the locking portion. The electric vacuum cleaner according to claim 2 made. The vacuum cleaner according to any one of claims 1 to 3, wherein the wall is provided with one or more ribs extending to an outer wall of the electric blower.