JP2747357B2 - Vacuum cleaner suction body - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a suction port of an electric vacuum cleaner having a vibrating body that vibrates a vibrating body with an electromagnet to release dust from a surface to be cleaned.

2. Description of the Related Art Conventionally, as described in, for example, Japanese Utility Model Publication No. 1-101463, a suction port body of a vacuum cleaner having a driven device for releasing dust from a surface to be cleaned such as a carpet or a tatami is known. Are known. The driven member of the suction opening of the conventional vacuum cleaner is driven by a vibration of a plurality of spheres supported via a spring by the suction force of an electric blower in the cleaner body to which the suction opening is connected. The body vibrates.

However, in such a configuration in which the vibrating body is vibrated using the suction force, it is difficult to obtain a stable and reliable operation.

In view of the above, the present inventors have disclosed in Japanese Patent Application Nos. 1-120868 and 1-253205 a suction port body of a vacuum cleaner using an electromagnet as a drive source of a vibrating body for releasing dust from a surface to be cleaned. Has been proposed. In the suction opening of these vacuum cleaners, one end of a vibrating body partially formed of a magnetically permeable member located near the electromagnet is connected to the vibrating body, and the other end of the vibrating body is elastically connected. A structure is adopted in which the case is supported by a case forming the outer shell of the suction port main body via a leaf spring as a member.

However, in the structure in which these electromagnets are provided, it is difficult to accurately maintain the distance between the electromagnets and the vibrating body because of the support of the vibration squad in the case. That is, for example, case deformation and dimensional variation,
Alternatively, the distance between the electromagnet and the vibrating body is likely to change due to variations in assembling the electromagnet into the case. If the distance between the electromagnet and the vibrating body changes as described above, the vibrating force and the amplitude may deviate from the optimal conditions, and the vibration of the vibrating body may not be sufficiently obtained. In addition, assemblability is poor and downsizing cannot be achieved.

(Problems to be Solved by the Invention) As described above, in the suction port body of the vacuum cleaner proposed above, since the vibrating body is supported by the case, the manufacturing requires a space between the electromagnet and the vibrating body. It is difficult to accurately maintain the distance, and it is difficult to obtain stable performance with respect to vibration of the vibrating body. Further, there is a problem that the assembly is poor and the size cannot be reduced.

The present invention has been made in view of such problems,
An object of the present invention is to provide a suction port body for a vacuum cleaner in which a distance between an electromagnet and a vibrating body is kept constant, stable performance of vibration of the vibrating body is obtained, and assemblability is improved and downsizing is achieved. And

(Means for Solving the Problems) The suction opening of the vacuum cleaner of the present invention has a suction chamber having a suction opening that opens downward, and communicates this suction chamber with the dust collector of the cleaner body. A suction port main body provided with a communicating air passage to be provided, a vibrating body provided in the suction chamber or near the suction opening, and an electromagnet provided in the suction port main body and serving as a driving source of the vibrating body, and at least a part thereof. And a vibrating body that is formed of a magnetically permeable member and is disposed near the electromagnet and vibrates the vibrating body. The vibrating body is directly supported by the electromagnet via an elastic member so as to be freely vibrated. It is a thing.

(Operation) In the suction port body of the vacuum cleaner of the present invention, the magnetically permeable member of the vibrator receives the magnetic force periodically generated by the electromagnet provided in the suction port main body, and is directly supported by the electromagnet via the elastic member. The vibrating body vibrates and vibrates the vibrating body, and strikes a surface to be cleaned such as a fold in the suction chamber or in the vicinity of the suction opening. The dust thus collected is guided from the suction opening to the dust collection chamber of the cleaner body via the suction chamber and the communicating air passage in the suction port body. Since the vibrating body is directly supported by the electromagnet by the elastic member, the electromagnet can be used even if the electromagnet is displaced when incorporated into the suction port main body or the electromagnet is slightly displaced by an external impact. The distance between the and the exciter is reliably kept constant.

(Embodiment) Hereinafter, a configuration of an embodiment of a suction port body of a vacuum cleaner according to the present invention will be described with reference to the drawings.

1, 2, 4 and 5, reference numeral 21 denotes a suction port main body, and this suction port main body 21 is configured by connecting a lower case 22 and an upper case 23. Inside the suction port main body 21, a suction chamber 27 is defined on the front side by partition walls 24, 25, and 26, and an air path chamber that forms a communication air path with the vibration device chamber 28 on the rear side. 29 and the motor room 30 are partitioned and formed in this order in the left-right direction. The suction chamber 27 and the air passage chamber 29 are communicated with each other by a communication port 31 formed in a partition wall 24 extending in the left-right direction. In addition, suction room 27
A suction opening 32 is formed on the lower surface of the suction port main body 21 facing the front side, and openings 33 and 34 are formed on both left and right sides of the suction opening 32, respectively. . Further, on the outer lower surface of the suction port main body 21, a first air path concave groove 35a communicating with one opening 34 from the left-right side surface of the suction port main body 21 is formed, and a rear part of the opening 34 is formed. From the second to the rear corner of the suction opening 32
Are formed.

A pair of left and right front ground wheels 36 are pivotally attached to the front edge of the lower surface of the suction port main body 21, and a pair of left and right rear ground wheels 37 are pivotally attached to the rear edge. .

Further, a first adhesive pipe 41 that extends from the inside of the air passage chamber 29 to the rear and outside is connected to the rear center of the suction port main body 21 in a vertically rotatable manner. That is, the rotating shafts 42 formed on both sides of the front portion of the first connection pipe 41 are connected to the partition walls 25, 2 on both sides of the air path chamber 29.
In FIG. 6, the lower case 22 and the upper case 23 rotatably hold the lower case 22 and the upper case 23. A front portion of the bent second connection tube 43 is connected to a rear portion of the first connection tube 41 so as to be rotatable in a circumferential direction thereof. The first connection pipe 41 and the second connection pipe 41
The connection pipe 43 is prevented from coming off by a connection ring 44.
The second connection pipe 43 is an extension pipe connected to a cleaner body (not shown) via a hose, and is detachably fitted to and connected to a rear portion. The first connection pipe 43 has a communication air passage therein. 41
The inside of the air passage chamber 29 and the dust collecting chamber in the main body of the cleaner are connected to each other via the second connection pipe 43, the hose, and the extension pipe.

In addition, three connection pins 45 that are respectively in contact with three pin receivers provided on the extension pipe are provided outside the rear portion of the second connection pipe 43. From these connection pins 45, power supply lines to the inside of the suction port main body 21 are provided by lead wires (not shown).

On the other hand, in the suction chamber 27 of the suction port body 21, a suction opening 32 is provided.
, The main rotating brush 51 is rotatably supported with the left-right direction as the rotation axis direction. That is, rotating shafts 52 fixed to both left and right end portions of the main rotating brush 51 are supported by bearings 53, respectively.
Supported by 21. Further, the auxiliary rotary brush 5 which is located outside the bearing 53 and faces each opening 33, 34 is provided on each rotary shaft 52.
4,55 are fixed respectively. Further, one bearing 53
A gear-shaped pulley 56 is fixed to the rotating shaft 52 between the rotating shaft 52 and the auxiliary rotating brush 55. The main rotating brush 51 and the auxiliary rotating brushes 54, 55 have a plurality of bristles 57,
58,59 were planted.

An electric motor 61 is provided in the electric motor room 30 in the suction port main body 21 as a drive source for driving the main rotary brush 51 and the auxiliary rotary brushes 54 and 55 to rotate. The gear-shaped pulley 63 fixed to the output rotary shaft 62 of the electric motor 61 and the gear-shaped pulley 5 of the main rotary brush 51 and the auxiliary rotary brushes 54, 55
A belt 64 for transmitting rotation is wrapped around 6.

Further, on the outside of the lower surface portion of the suction port main body 21, a suction chamber is provided.
A vibrating body 71 is disposed in a position behind the rear 27 and in front of the rear grounding wheel 37 in parallel with the main rotating brush 51 and the auxiliary rotating brushes 54 and 55. The vibrating body 71 includes a plurality of cylindrical vibrating rollers 72 arranged in the axial direction with almost no gap, an elastic shaft 73 penetrating the center of the vibrating rollers 72 in the axial direction, and an elastic shaft 73. Are fixed to the lower case 22 by two fixed bodies 74. The elastic shaft 73 is formed of a columnar elastic body such as a piano wire, and holds the vibrating rollers 72 rotatably.

On the other hand, on the lower surface of the lower case 22 of the
At a position corresponding to the front end of 29, a storage recess 76 extending in the left-right direction along the rear side of the suction opening 32 is formed. A plurality of cutouts 77 communicating with the suction opening 32 are formed in the lower portion of the front surface of the storage recess 76. The vibrating body 71 is disposed in the storage recess 76, and the fixed bodies 74 at both ends of the elastic shaft 73 are located at both ends of the storage recess 76 so that the lower case
It is locked and fixed by a locking claw 78 formed in 22. In the natural state, the lower part of the vibration roller 72 projects downward from the storage recess 76.

Further, a vibration device chamber 28 in the suction port main body 21, that is, an electric motor
A vibrating device 79 that vibrates the elastic shaft 73 of the vibrating body 71 is provided at a position opposite to the air path chamber 29 with the air path room 61 therebetween.

 Next, the vibration device 79 will be described.

An electromagnet serving as a driving source for the vibrating body 71 is provided in the vibration device chamber 28.
80 are provided. The electromagnet 80 is composed of a coil 81 and an E-shaped iron core 82 as shown in FIGS. An upper end of an elastic plate 83 as an elastic member made of an elastic body such as a leaf spring is fixed to a rear surface of the E-shaped iron core 82 by a rivet 84. In addition, this elastic plate 83
It is bent almost vertically, and the rear end of the free end is an electromagnet.
It is located behind 80. To the rear end of the elastic plate 83, the rear end of a diaphragm 85 made of a magnetically permeable member such as an iron plate located near the lower side of the electromagnet 80 is fixed by a rivet 84 or the like. The diaphragm 85 partially has an electromagnet 80
Is inserted into the lower part of the E-shaped iron core 82 with a gap therebetween. Further, a rear end of a connecting body 86 is fixed to a front end of the diaphragm 85, and a front end of the connecting body 86 located in front of the electromagnet 80 has a through hole formed in an upper portion of the storage recess 76. Through 87
The vibration member 71 is connected to an intermediate portion of the elastic shaft 73. The vibrating plate 85 and the connecting body 86 constitute a vibrating body 88 that is supported by the electromagnet 80 via an elastic plate 83 so as to be able to vibrate vertically and vibrates the vibrating body 71.

As is apparent from the above description, the central portion of the elastic plate 83, that is, the portion that bends during the vibration of the vibrating body 88, is given by the position below the E-shaped core 82 in the vibrating body 88, that is, the electromagnet 80. The vibrating body 88 is located on the side opposite to the position at which the vibrating body 71 vibrates across the point of force to be applied.

The resonance frequency of the entire vibration system including the vibrating body 71, the vibrating body 88, and the elastic plate 83 is determined by the elasticity of the elastic plate 83, the weight of the vibrating body 88 and the vibrating body 71, and the elasticity and length of the elastic shaft 73. The frequency is set at 60 Hz or more and around 60 Hz.

A switch 91 that controls power supply to the electromagnet 80 is provided in the vibration device chamber 28. As shown in FIG. 3, a pair of buttons 92 and 93 for turning on and off the switch 91 are provided on the upper case 23 located above the switch 91 by a plate spring 94 integrally formed. It is provided urged upward. Further, the buttons 92 and 93
A pair of light-emitting diodes 95, 96 that are turned on or off when the vibrator 71 or the rotating brushes 51, 54, 55 are activated or stopped are provided in the upper case 23 in front of the upper case 2.
3 is provided so as to emit light toward the upper surface.

 Next, the configuration of the electric circuit will be described with reference to FIG.

An electromagnet is placed between the poles of a 100 V AC power supply supplied from the cleaner body via a power supply line in the hose 101 and the extension pipe 102.
A diode 103, which is a magnetic force generating means for generating a magnetic force at a constant frequency at 80, a switch 91, and an electromagnet 80 are connected in series. Further, another switch 104 and the electric motor 61 for the rotary brushes 51, 54, 55 are connected in series between both poles of the same AC power supply. The switch 104 for the electric motor 61 is
It is arranged at the grip of the hose 101. In addition, electromagnet 8
In parallel with 0, resistor 105, diode 106 and light emitting diode 9
And 5 are connected in series. A resistor 107, a diode 108, and a light emitting diode 96 are connected in series with the electric motor 61.

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

At the time of cleaning, the vacuum cleaner main body, the hose, the extension pipe, and the second connection pipe 43 of the suction port main body 21 are connected to each other, and have a grip portion of the hose. Then, the front grounding wheel 36 and the rear grounding wheel 37
Is grounded on the surface to be cleaned, and the suction port main body 21 is run.

Then, the dust sucked together with the air from the suction opening 32 by the driving of the electric blower in the cleaner body, the suction chamber 27, the air passage chamber 29, the first connection pipe 41 and the second connection pipe 43, the extension pipe, It is led through a hose into the dust collection chamber of the vacuum cleaner.

Here, the main rotating brush 51 and the auxiliary rotating brushes 54, 55
By operating the switch 104 on the hose,
It can be activated or deactivated, and the vibrator 71
By operating the switch 91 on the suction port main body 21,
The main rotating brush 51 and the auxiliary rotating brushes 54 and 55 can be operated or stopped independently.However, when the surface to be cleaned is a wooden floor or the like, both the switches 91 and 104 are turned off to set the main rotating brush 51 and auxiliary rotating brushes 54, 55
It is preferable that both the vibration member 71 and the vibration member 71 be stopped for cleaning.

On the other hand, when cleaning a fold, it is preferable to operate the vibrator 71 to perform cleaning. For example, when the switch 91 is turned on by pressing one of the buttons 92, the light emitting diode 95 is turned on and the vibrator 71 is activated.

When the switch 91 is in the ON state, an alternating current from an AC power supply as shown in the upper left part of FIG. 8 is half-wave rectified by the diode 103 as shown in the upper left part of FIG. The current flows into the electromagnet 80. This current generates a magnetic force, which can be 50Hz or 60Hz
In the cycle of the commercial frequency.

When a current flows through the electromagnet 80 to generate a magnetic force,
The diaphragm 85 made of a magnetically permeable member is pulled toward the electromagnet 80 by receiving the magnetic force. More precisely, the diaphragm 85 swings so that the front side rises and the rear side fixed to the elastic plate 83 descends. Along with this, the elastic plate 83 is elastically bent so as to open, and the connecting member 86 and the elastic shaft 73 of the vibrating body 71 move upward as shown by a chain line in FIG. Then, when the current stops flowing, the magnetic force disappears and the magnetic plate
Each member returns to the original position indicated by the solid line in FIG. 1 due to the restoring force of the elastic shaft 83 and the elastic shaft 73. However, since the inertial force acts due to the mass of the vibrating body 88 and the vibrating roller 72, the elastic plate 83 closes. The elastic shaft 73 is bent downward as shown by the chain line at the bottom of FIG. Then, electromagnet 80
When an electric current flows through the elastic member 80, the attractive force of the electromagnet 80 is applied to the same inertial force as described above, and the elastic plate 83 is bent so as to open again, and the elastic shaft 73 is bent upward. By this repetition, the elastic shaft 73 of the vibrating body 71 vibrates in the vertical direction at 50 Hz or 60 Hz together with the vibrating body 88.

Then, the vibrating roller 72 of the vibrating body 71 vibrating in this manner hits the fold, and even the fine dust that has entered the eyes of the fold is efficiently hit and released. In addition,
The dust blown out by the vibrating body 71 passes through the cutout 77 at the lower front surface of the storage recess 76 and is sucked through the suction opening 32.

In addition, since the vibration roller 72 is rotatable, the torsion of the elastic shaft 73 is prevented.

In order to stop the vibrating body 71, the switch 91 is turned off by pressing the other button 93.

When cleaning the carpet, use the main rotating brush.
It is preferable to perform the cleaning by operating the 51 and the auxiliary rotating brushes 54 and 55. When the switch 104 is turned on, the light emitting diode 96 is turned on, and the electric motor 61 is turned on. The rotational force of the electric motor 61 is transmitted to the main rotary brush 51 and the auxiliary rotary brushes 54 and 55 via the belt 64. As a result, the main rotating brush 51 and the auxiliary rotating brushes 54 and 55 rotate to scrape dust from the carpet.

At this time, when the vibrator 71 is also operated, the main rotating brush
51 and the auxiliary rotating brushes 54 and 55
Since the vibrating body 71 provides a tapping effect, the ability to remove fine dust entangled in the hair at the back of the carpet is improved.

By the way, on the side where the belt 64 is located, it is not preferable to expose the belt 64 to the suction air path. Therefore, the suction openings 32 respectively facing the main rotating brush 51 and the auxiliary rotating brush 55 located with the belt 64 interposed therebetween. And the opening 34 cannot be connected. However, there is a first air path groove 35a and a second air path groove 35b extending between the side surface of the suction port main body 21, the opening 34, and the suction opening 32, and these first air path groove 35a and second air path groove 35b are formed. Since the suction air passage is formed by the second air passage recess 35b, the dust scraped off by the auxiliary rotary brush 55 can be smoothly sucked by the suction opening 32.
Can be sucked into. The opening 33 on the opposite side and the suction opening 32 may be connected. In this case, the bearing on the side of the auxiliary rotating brush 54 is preferably provided outside the auxiliary rotating brush 54 in the axial direction.

Further, even when the cleaning is performed without operating the vibrating body 71, even if the vibrating body 71 collides with a convex portion of the surface to be cleaned as the suction port main body 21 travels, the impact at that time is, It is absorbed by the elastic shaft 73 and the elastic plate 83. Therefore, breakage of the vibrating body 71 and the like is prevented.

According to the configuration of the above-described embodiment, the single suction port main body 21 can perform cleaning while efficiently releasing dust from both the folding and the carpet.

Further, since the vibrating body 71 is operated by the vibrator 79 instead of directly operating the vibrating body 71 by the suction force, the vibrating body 71 operates stably and reliably.

Further, the vibrating body 71 driven by the electromagnet 80 via the vibrating body 88 has a small noise during operation. Further, since the elastic roller 83 is supported by the elastic plate 83 having elasticity, it is possible to prevent the contact noise between the vibration roller 72 and the lower case 22 and the like.

Further, since the control of the vibration and stop of the vibrating body 71 and the control of the rotation and stop of the main rotary brush 51 and the auxiliary rotary brushes 54 and 55 can be performed independently, the four modes can be used as described above. It is convenient. Further, the switching between the four modes is easy.

Meanwhile, in order to vibrate the vibrating body 71, it is conceivable to use a rotary electric motor as a drive source, convert the rotation to vibration by an eccentric weight or an eccentric cam, and transmit the vibration to the vibrating body 71. However, in a mechanical motion conversion mechanism such as an eccentric weight or an eccentric cam, there is a contact portion or a sliding portion such as a cam, so that strength and wear resistance must be considered. In addition, the sliding portion must be made of metal, so that it is difficult to select a material and the cost tends to be high. further,
Strict dimensional control is required for manufacturing.

On the other hand, according to the configuration of the above embodiment, the vibrating body 71
Since the driving source is the electromagnet 80, there is no abutting portion or sliding portion, so that the operation noise can be reduced and the problem of abrasion and breakage hardly occurs, thereby improving reliability. Also,
The material can be easily selected, and strict dimensional control is not required, so that the manufacturability is improved and the cost can be reduced.

Further, in the above embodiment, only the diode 103 connected in series between the electromagnet 80 and the AC power supply is used as the magnetic force generation control means for generating a magnetic force at a constant frequency in the electromagnet 80, but as the magnetic force generation control means Alternatively, an oscillator may be used. However, if an oscillator is used, the circuit configuration becomes very complicated and expensive. On the other hand, if only the diode 103 is used as the magnetic force generation control means as in the above embodiment, the circuit configuration and the like can be simplified and the cost can be reduced.

By the way, if a displacement occurs between the electromagnet 80 and the vibrating body 88, and particularly in the case of the embodiment, if the displacement occurs in the horizontal direction, even if the displacement is minute, the electromagnet 80 is vibrated. The force applied to the body 88 changes greatly. However, the elastic plate 83 that supports the vibrating body 88 so that it can vibrate is fixed directly to the E-shaped core 28 of the electromagnet 80 instead of the lower case 22 and the upper case 23 that constitute the outer shell of the suction port main body 21. Thus, the distance between the E-shaped iron core 82 of the electromagnet 80 and the diaphragm 85 of the vibrating body 88 can be reliably kept constant. That is, there is a variation in the deformation and the dimensional accuracy of the lower case 22 and the upper case 23 in the manufacturing, or when the electromagnet 80 is incorporated into the suction port main body 21, and thereafter, there is a minute influence of the electromagnet 80 or the like due to an external impact. Even if any deviation occurs, a certain gap can be accurately secured between the E-shaped iron core 82 of the electromagnet 80 and the diaphragm 85 of the vibrating body 88 without being affected by the deviation. Therefore, stable performance with respect to the vibration of the driving body 71 can be obtained.

In addition to the fact that the electromagnet 80 and the vibrating body 88 can be accurately positioned as described above, the vibrating body 71, the vibrating body 88,
The vibrating system formed by the elastic plate 83 and the electromagnet 80 and the vibrating device 79 are integrally unitized to improve the assemblability.

Further, since it is not necessary to form a screw boss or the like for fixing the elastic plate in the case, the size can be reduced. For example, the suction port main body 21 can be shortened in the front-rear direction as compared with a case where the rear end of the elastic plate is fixed to the screw boss of the case behind the electromagnet.

Also, while the elastic plate 83 is located behind the maximum magnetic force generating portion at the center of the electromagnet 80, the vibrating body 88 is connected to the vibrating body 71 in front of the maximum magnetic force generating portion, The amplitude at the front end of the vibrating body 88, that is, the position at which the vibrating body 71 is vibrated is larger than the amplitude at a position near the electromagnet 80 in the same vibrating body 88. Therefore, compared with the case where the elastic plate and the exciting point of the vibrating body with respect to the vibrating body are located on the same side of the electromagnet, the vibrating body 71 hits the cleaning surface more strongly, and I can hit the cleaning surface enough,
Cleanability is improved.

In addition, the suction port main body 21 of the above embodiment is a main rotating brush 51 as a driven member for releasing dust from the surface to be cleaned.
And the auxiliary rotary brushes 54 and 55, but the suction port body to which the present invention is applied does not have the main rotary brush 51 and the auxiliary rotary brushes 54 and 55 and has only the vibrating body 71. Good.

Further, in the above-described embodiment, the vibrating body 71 is disposed on the lower surface of the suction port main body 21 and near the rear of the suction opening 32. However, the vibrating body 71 is disposed near the front of the suction opening 32 or in the suction chamber 27. May be arranged.

(Effect of the Invention) According to the suction opening of the vacuum cleaner of the present invention, since the vibrating body that vibrates the vibrating body by receiving the magnetic force generated by the electromagnet is directly supported on the electromagnet via the elastic member, For example, the gap between the electromagnet and the vibrator without being affected by the dimensional error or deformation of the suction port main body, the variation in assembly between the suction port main body and the electromagnet, or the displacement of the electromagnet due to an externally applied impact. The distance can be accurately kept constant, stable performance can be obtained with respect to the vibration of the vibrating body, and the suction port main body does not need a fixing portion of an elastic member, so that downsizing can be achieved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a suction port body of the vacuum cleaner of the present invention, FIG. 2 is a plan view excluding the upper case,
3 is a plan view of the switch part, FIG. 4 is a bottom view of the switch part, FIG. 5 is a cross-sectional view of the vibrator part, FIG. 6 is an enlarged perspective view of the electromagnet part, and FIG. FIG. 8 is an enlarged sectional view of a portion, and FIG. 21 ... Suction port body, 27 ... Suction chamber, 29 ... Air path chamber forming a communicating air path, 32 ... Suction opening, 41,43 ... Connection pipe inside forming a communicating air path, 71 ... Vibrating body, 80 ... electromagnet, 83 ...
An elastic plate as an elastic member, 85: a diaphragm made of a magnetically permeable member, 88: a vibrating body.

Continuation of the front page (56) References JP-A 49-138665 (JP, U) JP-A 1-1101463 (JP, U) JP-A 49-30695 (JP, Y1) JP-B 8-13298 (JP) , B2) Tokiko Hei 8-29135 (JP, B2)

Claims (1)

(57) [Claims] A suction chamber having a suction chamber having a suction opening which is opened downward and having a communication air passage for communicating the suction chamber with a dust collection chamber of a vacuum cleaner main body; A vibrating body provided in the vicinity of the suction opening and vibrating; an electromagnet provided in the suction port main body and serving as a driving source of the vibrating body; at least a part formed of a magnetically permeable member and arranged near the electromagnet A vibrating body for vibrating the vibrating body, wherein the vibrating body is directly supported by the electromagnet via an elastic member so as to be able to vibrate freely.