JP2012005561A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner designed to reduce noise, especially a high-frequency sound, transmitted from the intake side of an electric fan.SOLUTION: The vacuum cleaner includes an electric fan chamber 3 communicating with a suction implement (not shown in the figure) sucking dust and storing the electric fan 2 generating a suction air, a dust collecting chamber 5 disposed on the upstream side of the electric fan chamber 3 and storing a dust collecting bag 4 for collecting the dust, and a vibrating plate 28 applying vibration to the dust collecting bag 4 to remove the dust sticking to the dust collecting bag 4. In this constitution, a sound absorbing member 58 is provided at least at a part of the vibrating plate 28 and the noise transmitted from the intake side of the electric fan 2 can be reduced by the sound absorbing member 58.

Description

  The present invention relates to a vacuum cleaner designed to reduce noise.

  As a conventional vacuum cleaner of this type, an electric blower for sucking dust, a main body incorporating the electric blower, and an exhaust port that is provided in the main body and exhausts exhaust from the electric blower to the outside, A part of the exhaust passage formed by communicating the electric blower and the exhaust port is shielded by a shielding plate made of a flexible material, and the exhaust passage is shielded during strong operation of the electric blower. Part of the plate is bent and deformed to secure the required exhaust passage area, but during weak operation, the exhaust passage is shielded to a greater extent than during strong operation due to a decrease in exhaust wind speed, especially high-frequency sound is discharged directly from the exhaust port. In some cases, the noise can be reduced by preventing the noise (for example, see Patent Document 1).

  There has also been proposed a vacuum cleaner that is provided with a silencer in the dust collection chamber to reduce noise (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 11-178753 JP-A-10-211128

  However, in the configuration of the conventional vacuum cleaner as described in Patent Document 1, noise emitted from the electric blower, particularly high frequency sound, is transmitted not only from the exhaust port but also from the intake port for sucking dust. Therefore, there has been a problem that the noise reduction effect cannot be obtained on the intake side.

  Moreover, in the structure of the conventional vacuum cleaner as described in the said patent document 2, since the muffler part used as another component of complicated shape is arrange | positioned ahead of the electric blower for attracting | sucking dust, it becomes a little expensive. In addition, it is common that a grid for preventing contact with the electric blower is provided between the electric blower and a dust collecting chamber for storing a dust collection bag for collecting dust. By arranging the silencer, there is a problem that the structure is complicated and it is a little difficult to obtain sufficient strength.

  An object of the present invention is to solve the above-mentioned conventional problems and to provide a vacuum cleaner that can reduce noise transmitted from the intake side of an electric blower, particularly high-frequency sound.

  In order to solve the above-described conventional problems, an electric vacuum cleaner according to the present invention includes an electric blower chamber that houses an electric blower that communicates with a suction tool that sucks dust and generates suction air, and an upstream side of the electric blower chamber. A dust collection chamber for storing a dust collection bag for collecting dust, and a vibration plate for applying vibration to the dust collection bag to remove dust adhering to the dust collection bag. A silencer is provided at least in part, and noise transmitted from the intake side of the electric blower can be reduced by the silencer.

  The vacuum cleaner of the present invention can reduce noise transmitted from the intake side of the electric blower, particularly high-frequency sound.

Whole perspective view of the electric vacuum cleaner in Embodiment 1 of this invention Sectional view of the main body of the vacuum cleaner Perspective view of the vacuum cleaner body with the lid removed Partial sectional view of the vacuum cleaner body Side view of dust removal means of the vacuum cleaner Side view of the dust removal means

  1st invention is connected to the suction tool which attracts | sucks dust, The electric blower chamber which accommodates the electric blower which generate | occur | produces a suction wind, and the dust collection bag which is distribute | arranged to the upstream of the said electric blower chamber, and collects dust And a vibration plate for removing the dust adhering to the dust collection bag by applying vibration to the dust collection bag, and at least a part of the vibration plate is provided with a silencer. The noise transmitted from the intake side of the electric blower can be reduced by the silencer.

  In the second aspect of the invention, in particular, a sound absorbing member is disposed as the sound deadening part of the first aspect of the invention, and unpleasant noise transmitted from the dust collecting chamber side can be reduced. There are various types of sound absorbing members, and sound absorbing members in various frequency bands are made possible by selecting an effective sound absorbing member for the frequency band to be silenced.

  In the third invention, the silencer of the first or second invention is composed of two or more materials, and high-frequency sound with high permeability emitted from the intake side of the electric blower is effective. Can be sound-insulated.

  In a fourth aspect of the invention, in particular, the silencer of any one of the first to third aspects of the invention is located at a position where the suction pressure by the electric blower is most concentrated, and is emitted from the intake side of the electric blower. Therefore, the noise reduction effect can be obtained more effectively.

  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 cross-sectional view of the main body of the electric vacuum cleaner, and FIG. 4 is a partial cross-sectional view of the main body of the vacuum cleaner, FIG. 5 is a side view of the dust removing means of the vacuum cleaner, and FIG. 6 is a side view of the dust removing means.

  1 to 6, reference numeral 1 denotes an electric vacuum cleaner body of the electric vacuum cleaner according to the present embodiment, in which an electric blower chamber 3 having an electric blower 2 built in is arranged at the rear, and the dust can be detachably attached to the front. A dust collection chamber 5 for storing the electret-processed dust collection bag 4 to be collected is disposed, and a pair of traveling wheels 6 are rotatably attached to both sides of the lower rear portion, Similarly, a traveling caster 7 is attached. A suction port 10 to which a connection pipe 9 provided at one end of the hose 8 is detachably connected is provided at the front portion of the electric vacuum cleaner main body 1.

The other end of the hose 8 is provided with a tip pipe 12 having a handle 11 that is gripped during cleaning. Reference numeral 13 denotes an extendable or jointable extension pipe, the downstream end of which is detachably connected to the tip pipe 12, and the other end is a rotary brush 14 for dust lifting, and the rotary brush 14 is driven to rotate. It is detachably connected to a suction tool 16 having a built-in motor 15.

  Reference numeral 17 denotes a main body handle used when carrying the electric vacuum cleaner main body 1, and includes a lid 18 and an upper body 19 that cover the dust collection chamber 5 of the electric vacuum cleaner main body 1.

  The front part of the electric blower 2 is supported in the electric blower chamber 3 by a support front 20 made of an elastic material and the rear part is also a support 21 made of an elastic material, and is supported by the motor case 22 and the motor cover 23. The support 20 and the support 21 are sandwiched. A communication port 24 communicating with the dust collection chamber 5 is provided in front of the electric blower 2.

  A partition wall 25 that partitions the electric blower chamber 3 that houses the electric blower 2 and the dust collecting chamber 5 is provided in the lower case 26, and a packing 27 is provided above the partition wall 25. Thus, air tightness in the dust collection chamber 5 is performed to ensure airtightness.

  Between the partition wall 25 and the dust collection bag 4, dust removal means 29 including a vibration plate 28 that strikes the dust collection bag 4 and applies vibration is provided.

  On the electric blower chamber 3 side, a cord winding device 32 including a cord reel 31 that can be wound and stored with a power cord 30 that supplies power to the electric blower 2 is disposed, and when the power cord 30 is pulled out or When the storage operation is performed, the cord reel 31 is also rotated.

  A substantially circumferential rib body 33 is formed on the cord reel 31, and a plurality of rib bodies 33 are formed in a shape connected to both ends of the protruding ribs 34 formed on the cord reel 31, Arranged inside the outer periphery of the reel 31. The cord reel 31 of the cord winding device 32 is pivotally supported by a partition wall body 35, and a rotation lever 36 that stops and releases the rotation of the cord reel 31 is pivotally supported by the partition wall body 35. Yes.

  The rotating lever 36 is provided with an abutting portion 37 that abuts against the protruding rib 34 formed on the cord reel 31 in a substantially arc shape, and a sliding operation for sliding a sliding lever 38 that applies vibration to the diaphragm 28. A contact release portion 40 that releases the contact between the portion 39 and the protruding rib 34 is formed. The abutting portion 37 and the protruding rib 34 are configured to abut through a window portion 41 opened in the partition wall body 35.

  The contact portion 37 is provided with a wear prevention body 42 made of a metal material (not shown) such as a screw to prevent wear due to contact with the protruding rib 34. Further, a contact spring 43 that biases the rotation lever 36 in a direction in which the contact portion 37 contacts the rib body 33 or the protruding rib 34 is provided in the vicinity of the sliding operation portion 39.

  A brake release portion 44 that releases the rotation restraint of the cord reel 31 is formed in conjunction with the rotation lever 36, and is urged above the electric vacuum cleaner main body 1 by the operation portion spring 45.

  The sliding lever 38 has a contact portion 46 that contacts a sliding operation portion 39 provided on the rotary lever 36 at one end, and a vibration transmitting portion 47 that applies vibration to the diaphragm 28 at the other end. In the vicinity of the contact portion 46, a contact spring 48 that biases the sliding lever 38 in the direction of the vibration transmitting portion 47 is provided.

The partition wall 25 is provided with an opening 49 through which the sliding lever 38 is passed, the engaging groove 50 is provided in the sliding lever 38, and the covering member 52 formed with the engaging portion 51 is connected to the engaging groove 50 and the opening. 49 is held and fixed. The covering member 52 has a flange-like convex portion 53 formed on the outer periphery, and is made of a soft material such as rubber.

  The partition wall 35 is formed with an inclination prevention rib (not shown) for preventing the inclination of the sliding lever 38 during operation, and a cover body 55 that covers the rotation lever 36 and the sliding lever 38 is held and fixed.

  Similar to the partition body 35, the cover body 55 forms a bearing portion 60 that pivotally supports the rotation lever 36, holds the contact spring 43 that biases the rotation lever 36, and biases the sliding lever 38. The abutting spring 48 is held.

  On the other hand, an insertion portion 56 that pivotally supports the diaphragm 28 is provided from the lower case 26 and inserted from an opening 49 provided in the partition wall 25 before the communication port 24 provided in the partition wall 25 in the dust collecting chamber 5. The vibration transmitting unit 47 is set.

  The diaphragm 28 is provided with a diaphragm operating portion 57 that receives vibration from the sliding lever 38 and can be detachably engaged.

  The abutting portion 37 formed on the rotating lever 36, the sliding lever 38, and the diaphragm operating portion 57 formed on the diaphragm 28 are arranged substantially in a straight line. A space 59 is provided on the downstream side of the diaphragm 28 through which the suction air flows, and a sound absorbing member 58 is disposed in the space 59 as a silencer for reducing noise.

  The effect | action is demonstrated below about the vacuum cleaner in this Embodiment comprised as mentioned above.

  When the electric blower 2 is operated, an operation sound is generated with the generation of suction air. In particular, a high frequency sound called NZ sound resulting from the number of blades and the number of rotations of a fan (not shown) of the electric blower 2 is generated from the electric blower 2, and the high frequency sound passes through the communication port 24 in front of the electric blower 2. Radiated in the direction of the dust collection chamber 5.

  The high frequency sound that has passed through the communication port 24 to the dust collecting chamber 5 is absorbed by the sound absorbing member 58 disposed on the diaphragm 28 when passing through the diaphragm 28, and noise can be reduced.

  If the sound absorbing member 58 is made of two or more materials, it is possible to more effectively isolate high-frequency sound with high permeability emitted from the intake side of the electric blower 2.

  Further, if the sound absorbing member 58 is located at a location where the suction pressure by the electric blower 2 is most concentrated, that is, a location where the noise generated from the intake side of the electric blower 2 is concentrated, the sound is effectively silenced. An effect can be obtained.

  As described above, the vacuum cleaner according to the present invention is excellent in reducing noise by simple means and can be widely applied to various household and commercial vacuum cleaners.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner body 2 Electric blower 3 Electric blower room 4 Dust collection bag 5 Dust collection room 16 Suction tool 28 Diaphragm 58 Sound absorption member (silencer part)

Claims (4)

An electric blower chamber that houses an electric blower that communicates with a suction tool that sucks dust and generates suction air, and a dust collection chamber that is arranged upstream of the electric blower chamber and houses a dust collection bag that collects dust And a vibration plate that applies vibration to the dust collection bag to remove dust attached to the dust collection bag, and a sound deadening portion is provided on at least a part of the vibration plate. The electric vacuum cleaner according to claim 1, wherein a sound absorbing member is disposed as the silencer. The electric vacuum cleaner according to claim 1 or 2, wherein the silencer is made of two or more materials. The vacuum cleaner according to any one of claims 1 to 3, wherein the silencer is located at a location where the suction pressure by the electric blower is most concentrated.