JPH0829135B2 - Vacuum cleaner suction body - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body of an electric vacuum cleaner having a driven tool for releasing dust from a surface to be cleaned and used for cleaning a floor surface or the like.

(Prior Art) Conventionally, for example, a configuration shown in FIG. 8 is known as a suction port body of an electric vacuum cleaner having a driven tool for releasing dust from a surface to be cleaned, especially a fold.

In the suction port body of the electric vacuum cleaner shown in FIG. 8, a suction chamber 2 and a communication chamber 3 are defined in the suction port body 1.
A suction port 4 is opened on the lower surface of the suction port body 1 facing the suction chamber 2, and a connecting pipe 5 is connected to a rear portion of the suction port body 1 facing the communication chamber 3. The connecting pipe 5 is connected to the dust collecting chamber of the cleaner body through a hose or the like. Then, in the suction chamber 2, the shaft of an elastic body such as a piano wire is
Three vibrating rollers 9,10, respectively supported by 6,7,8
11 is arranged so as to form a substantially triangular shape when viewed from the side. The upper shaft 6 at the apex of the triangle is made of an elastic body weaker than the other two lower shafts 7, 8.

Then, when no suction force is generated, the outer peripheral surfaces of the three vibrating rollers 9, 10, 11 are in contact with each other due to the urging of the shaft 6, and the suction port 4 is sealed. However, when the suction force is generated in the communication chamber 3 as indicated by the thick arrow by the operation of the electric blower of the main body of the vacuum cleaner, the shaft 6 made of a weak elastic body first bends upward as indicated by the chain line, and the vibration roller 9
And a gap is generated between the other vibrating rollers 10 and 11. When this gap is created, air is introduced from there, the degree of vacuum in the communication chamber 3 is lowered, and the elasticity of the shaft 6 causes the vibrating roller 9 to return to its original position and strike the vibrating rollers 10 and 11 to cause these vibrations. The rollers 10 and 11 vibrate. That is, three vibrating rollers 9,10,
When 11 contact or approach each other, the degree of vacuum in the communication chamber 3 rises and the vibrating roller 9 is pulled upward. When the vibrating rollers 9, 10, 11 move away from each other, the vacuum chamber 3 in the communicating chamber 3 increases.
The degree of vacuum in the inside decreases and the vibrating roller 9 returns downward and strikes the vibrating rollers 10 and 11. This series of operations is repeated.
Cleaning is performed while the vibrating vibrating rollers 10 and 11 hit the folds.

(Problems to be solved by the invention) However, in the suction port body of the electric vacuum cleaner for folding as described above, the collision noise of the vibrating rollers 9, 10, 11 is generated and the noise is large, and Since the suction force is used directly, the conditions under which vibration occurs are subtle, and the vibrating rollers 9, 10, 11
The start is unstable and the axis is adjusted according to the performance of the vacuum cleaner.
The elasticity of 6,7,8 must be adjusted. That is, if the suction force changes, the three vibrating rollers 9, 10, 11 may all be held in a raised state or move together, which causes a problem that stable operation is difficult to obtain. ing.

The present invention has been made in view of the above problems, and a vibrating body for releasing dust from a surface to be cleaned operates stably and reliably, and the vibrating body has high durability, and An object of the present invention is to provide a suction port body of an electric vacuum cleaner that has good manufacturability and can reduce noise.

(Means for Solving the Problem) The suction port body of the electric vacuum cleaner according to claim 1 has an air passage inside and has a suction port communicating with the air passage opened on the lower surface of the front side and having a longitudinal shape in the width direction. A suction port body, a connecting pipe for communicating the air passage in the suction port body with the dust collection chamber of the cleaner body, a grounding wheel arranged on the lower rear side of the suction port body, and the suction port body And a vibrating body that is located on the lower surface of the grounding wheel and intermediate in the front-rear direction of the suction port and is provided along the longitudinal direction of the suction port body, and an electromagnet that excites the vibrating body by generating a magnetic force at a constant frequency. It is equipped with and.

(Operation) In the suction port body of the electric vacuum cleaner according to claim 1, the electromagnet of the vibrating device generates a magnetic force at a constant frequency, and when the magnetic force is received, the vibrating body vibrates to be cleaned such as a fold. The surface is tapped, and dust is knocked out from the surface to be cleaned and released. Further, since the vibrating body is located in the front-rear direction intermediate position between the grounding wheel and the suction port, the vibrating body is disposed on the lower surface of the suction body, so that when the vibrating body vibrates, the load applied to the grounding wheel by the suction force and the operation force at the suction port part. However, the repulsive force applied to the suction port main body by hitting the surface to be cleaned by the vibrating body between the suction port and the grounded wheel is suppressed, and the vertical movement of the suction port main body is prevented. In this way, the dust that has been knocked out is guided from the suction port to the dust collection chamber of the cleaner body through the air passage in the suction port body and the connection pipe.

(Embodiment) Hereinafter, the construction of an embodiment of the suction port body of the electric vacuum cleaner of the present invention will be described with reference to FIGS. 1 to 6.

As shown in FIG. 1, 21 is 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. And inside the suction port body 21, the partition walls 24, 2
A suction chamber 27 forming an air passage is defined on the front side by 5, 26, and an air passage chamber forming an air passage with an exciter chamber 28 on the rear side.
29 and the electric motor room 30 are arranged side by side in this order in the left-right direction. The suction chamber 27 and the air passage chamber 29 are communicated with each other through a communication port 31 formed in the partition wall 24 extending in the left-right direction. Further, a suction port 32 is formed in the lower surface of the suction port main body 21 facing the suction chamber 27, and openings 33, 34 are formed at the left and right sides of the suction port 32, respectively. ing. Further, on the outer lower surface of the suction port main body 21, there is formed a first air passage groove 35a which communicates from the left and right side surfaces of the suction port main body 21 to one opening 34, and the rear portion of the opening 34. A second air passage groove 35b is formed which leads to the rear angle of the suction port 32.

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

Further, at the center of the rear portion of the suction port main body 21, a first connecting pipe 41 that extends from the inside of the air passage chamber 29 to the outside of the rear is connected so as to be vertically rotatable. That is, the rotary shafts 42 formed on both sides of the front portion of the first connecting pipe 41 are provided with the partition walls 25, 26 on both sides of the air passage chamber 29.
In, the lower case 22 and the upper case 23 are rotatably sandwiched. Further, at the rear of the first connecting pipe 41,
The bent front portion of the second connecting pipe 43 is rotatably connected in the circumferential direction. The first connecting pipe 41 and the second connecting pipe 43 are prevented from coming off by a connecting ring 44. The second connecting pipe 43 is an extension pipe that is connected to a cleaner body (not shown) via a hose and is detachably fitted and connected to the rear portion thereof. The first connecting pipe 41 and the second connecting pipe 43 The air passage chamber 29 and the dust collecting chamber in the cleaner body are communicated with each other through the hose and the extension pipe.

Further, on the outer side of the rear portion of the second connection pipe 43, three connection pins 45 which are respectively brought into contact with the three pin receivers provided on the extension pipe are provided. A power supply line to the inside of the suction port body 21 is provided from these connection pins 45 by a lead wire (not shown).

Further, in the suction chamber 27 of the suction port main body 21, the suction port 32
The main rotating brush 51 is rotatably supported with the left-right direction as the rotation axis direction. That is, the rotary shafts 52 fixed to the left and right ends of the main rotary brush 51 are rotatably supported by bearings 53, respectively, and these bearings 53 serve as suction port bodies.
Supported by 21. Further, the auxiliary rotary brush 5 located outside the bearing 53 and facing each opening 33, 34 is provided on each rotary shaft 52.
4,55 are fixed respectively. In addition, one bearing 53
A gear-shaped pulley 56 is fixed to the rotary shaft 52 between the auxiliary rotary brush 55 and the auxiliary rotary brush 55. The rotating brushes 51, 54, 55 are
A plurality of brush bristles 57, 58, 59 are planted on the outer peripheral surface.

In addition, in the electric motor room 30 inside the suction port body 21, a rotating brush
An electric motor 61 is arranged as a drive source for rotationally driving the 51, 54, 55. Then, a belt 64 for rotation transmission is stretched around a gear-shaped pulley 63 fixed to the output rotary shaft 62 of the electric motor 61 and the pulley 56 of the rotary brushes 51, 54, 55.

Further, immediately outside the lower surface of the suction port body 21, the suction chamber 27
Behind the vehicle and in front of the rear ground wheel 37,
71 is arranged in parallel with the rotating brushes 51, 54, 55. The vibrating body 71 includes a plurality of cylindrical vibrating rollers 72 as beaters arranged in the axial direction with almost no gaps, and an elastic shaft 73 penetrating the centers of the vibrating rollers 72 in the axial direction.
And two fixing bodies 74 for suspending the elastic shaft 73 on the lower case 22. Also, the elastic shaft 73
Is made of a cylindrical elastic body such as a piano wire, and holds the vibration rollers 72 rotatably.

On the other hand, on the lower surface of the lower case 22 of the suction port main body 21, there is an air duct chamber.
A storage recess 76 extending in the left-right direction is formed along the rear side of the suction port 32 at a position corresponding to the front end of 29. A plurality of notches leading to the suction port 32 are provided on the lower front surface of the storage recess 76.
77 are formed. Then, the vibrating body 71 is placed in the storage recess 76.
The fixed body 74 at both ends of the elastic shaft 73 is disposed.
Are locked and fixed by locking claws 78 formed on the lower case 22 at both ends of the storage recess 76. In the natural state, the lower part of the vibrating roller 72 projects downward from the storage recess 76.

Further, the vibration device chamber 28 in the suction port body 21, that is, the electric motor
A vibrating device 81 that vibrates the elastic shaft 73 of the vibrating body 71 is disposed at a position on the opposite side of the air passage chamber 29 and the air passage chamber 29.

 Next, the vibration device 81 will be described.

An electromagnet 82 is provided in the vibrating device chamber 28, and a rear end portion of an elastic plate 83 as an elastic support made of an elastic body such as a leaf spring is located behind the electromagnet 82 and is located in the lower case 22.
It is fixed by screws 84. And this elastic plate 83
The rear end of the diaphragm 85, which is located near the lower side of the electromagnet 82 and is made of a magnetically permeable member such as an iron plate, is fixedly connected to the front end of the free end. Further, a rear end portion of the connecting body 86 is fixed to a front end portion of the vibrating plate 85, and the front end portion of the connecting body 86 vibrates via a through hole 87 formed in an upper portion of the storage recess 76. It is connected to the intermediate portion of the elastic shaft 73 of the body 71. Thus, the vibrating plate 85 and the connecting body 86 are attached to the suction port main body 21 by the elastic plate.
A vibrating body 88 is supported by 83 so as to be able to vibrate in the vertical direction and connected to the elastic shaft 73.

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. It is determined by the difference between and, but it is set to 60Hz or higher and near 60Hz.

In addition, a switch 91 for controlling power supply to the electromagnet 82 is provided in the vibration device room 28. The upper case 23 located above the switch 91 has a switch 91
A pair of buttons 92, 93 for turning on / off the switch are provided by being biased upward by a plate spring 94 integrally formed. Furthermore, it is located in front of the buttons 92 and 93 and is located in the upper case 2.
3, a pair of light emitting diodes 95, 96 that are turned on or off when the vibrating body 71 or the rotating brushes 51, 54, 55 are operated or stopped are provided so as to emit light toward the upper surface of the upper case 23. .

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

Between the poles of the 100V AC power supply supplied from the cleaner body via the power supply line in the hose 101 and extension tube 102, an electromagnet
A diode 103, which is a rectifying element as a magnetic force generation control unit that generates a magnetic force at a constant frequency, a switch 91, and an electromagnet 82 are connected in series to the 82. Also, between the two poles of the same AC power supply, another switch 104 and rotating brush 51,5
Electric motors 61 for 4,55 are connected in series. The switch 104 for the electric motor 61 is arranged at the grip of the hose 101. Further, a resistor 105, a diode 106 and a light emitting diode 95 are connected in series in parallel with the electromagnet 82. A resistor 107, a diode 108 and a light emitting diode 96 are connected in series in parallel with the electric motor 61.

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

At the time of cleaning, the vacuum cleaner body, the hose 101, the extension pipe 102, and the second connection pipe 43 of the suction port body are connected to each other, and the grip portion of the hose 101 is held. Then, the ground wheels 36, 37 are 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 port 32 by the driving of the electric blower in the cleaner main body is the suction chamber 27,
It is guided into the dust collecting chamber of the electric vacuum cleaner through the air duct chamber 29, the connecting pipes 41 and 43, the extension pipe 102 and the hose 101.

Here, the rotating brushes 51, 54, 55 can be operated or stopped by operating the switch 104 on the hose 101, and the vibrating body 71 can operate the switch 91 on the suction port body 21. Can be operated or stopped independently of the rotating brushes 51, 54, 55, but when the surface to be cleaned is a wooden floor, etc., both switches 91, 104 are turned off to turn the rotating brushes 51, 54 It is advisable to stop both 55 and 55 and vibrating body 71 for cleaning.

On the other hand, when cleaning the fold, it is preferable to operate the vibrating body 71 to perform cleaning. For example, if you press one button 92 to turn on switch 91, the light emitting diode
95 lights up and the vibrating body 71 starts.

When the switch 91 is in the ON state, the AC current from the AC power source shown in the upper left side of FIG. 6 is half-wave rectified by the diode 103 as shown in the upper left side of FIG. Electric current flows into the electromagnet 82. This current produces a magnetic force, which is 50Hz or 60Hz.
It will change in the cycle of the commercial frequency of.

Then, when a current flows through the electromagnet 82 and a magnetic force is generated,
The diaphragm 85 made of a magnetically permeable member receives the magnetic force and the electromagnet
When the elastic plate 83 is pulled toward the 82 side and elastically bends in the direction of the electromagnet 82, the connecting body 86 and the elastic shaft 73 of the vibrating body 71 also move in the same direction, that is, upward, as shown by the chain line in FIG. . Then, when the current stops flowing, the magnetic force disappears,
Due to the restoring force of the elastic plate 83 and the elastic shaft 73, each member is first
Although it returns to the original position shown by the solid line in the figure, since the inertial force acts due to the mass of the vibrating body 88, the vibrating roller 72, etc., as shown by the lower dashed line in FIG. Bends in the opposite direction, that is, downward. Then, when a current flows through the electromagnet 82, the attractive force of the electromagnet 82 is added to the inertia force,
The elastic plate 83 and the elastic shaft 73 are again bent toward the electromagnet 82 side. By repeating this, the elastic shaft 73 of the vibrating body 71 vibrates vertically together with the vibrating body 88 at 50 Hz or 60 Hz.

Then, the vibrating roller 72 of the vibrating body 71 vibrating in this way taps the fold, and even the fine dust that has entered the eyes of the fold is efficiently tapped and released. In addition,
The dust blown out by the vibrating body 71 is sucked from the suction port 32 through the notch 77 in the lower front surface of the storage recess 76.

Since the vibration roller 72 is rotatable, the elastic shaft 73 is prevented from twisting.

To stop the vibrating body 71, the other button 93 is pressed to turn off the switch 91.

In addition, when cleaning the carpet, use a rotating brush.
It is good to activate 51, 54, 55 for cleaning. Switch 10
When 4 is turned on, the light emitting diode 96 lights up and the electric motor 61 is turned on, and the rotational force of the electric motor 61 is transmitted to the rotating brushes 51, 54, 55 via the belt 64, and the rotating brush 51 , 54, 55 rotate to scrape dust from the carpet.

At this time, if the vibrating body 71 is also activated, the rotating brush 5
The scraping effect of 1,54,55 is added to the tapping effect of the vibrating body 71, so that the ability to remove fine dust entangled in the fur inside the carpet is improved.

By the way, since it is not preferable to expose the belt 64 to the suction air passage on the side where the belt 64 is present, the suction port 32 and the opening facing the main rotary brush 51 and the auxiliary rotary brush 55, which are positioned with the belt 64 sandwiched therebetween, respectively. It cannot be connected to part 34. However, the side surface of the suction port body 21, the opening 34, and the suction port 32
There are air passage groove 35a, 35b extending to
Since the suction air passage is formed by a and 35b, the dust scraped by the auxiliary rotary brush 55 can be smoothly sucked into the suction port 32. The opening 33 on the opposite side and the suction port 32 may be connected to each other. In this case, the bearing on the side of the auxiliary rotary brush 54 may be provided outside the auxiliary rotary brush 54 in the axial direction.

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

According to the configuration of the above-described embodiment, it is possible to perform cleaning while efficiently releasing dust by both the folding and the carpet with one suction port body.

Further, since the vibrating body 71 is operated by the vibrating device 81 instead of directly operating the vibrating body 71 by the suction force, the vibrating body 71 operates stably and surely.

Furthermore, since there is no collision between the vibrating rollers 9, 10, 11 as in the conventional case, noise is reduced. The vibrating roller is supported by being supported by the elastic plate 83 having elasticity.
It is also possible to prevent the occurrence of contact noise between the 72 and the lower case 22.

Furthermore, since the control of vibration and stop of the vibrating body 71 and the control of rotation and stop of the rotary brushes 51, 54, 55 can be performed independently, it is possible to use the four modes as described above, which is convenient. It is easy to switch between these four modes.

By the way, in order to vibrate the vibrating body, it is possible to use a rotary electric motor as a drive source, convert the rotation into vibration by an eccentric weight or an eccentric cam, and transmit the vibration to the vibrating body. However, in a mechanical motion conversion mechanism such as an eccentric weight or an eccentric cam, since there is a contact portion or a sliding portion such as a cam, strength and wear resistance must be taken into consideration. Further, the sliding portion has to be made metallic, which makes it difficult to select the material and tends to be expensive. Furthermore, in manufacturing,
Strict dimensional control is required.

On the other hand, according to the above-mentioned configuration, since the drive source of the vibrating body 71 is the electromagnet 82, the operating noise can be quiet due to the absence of the contact portion and the sliding portion, and the problem of wear and damage also occurs. Harder and more reliable. Further, 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, the grounding wheels 37, 37 on the lower rear side of the suction port body 21 are grounded to move the suction port body 21 on the surface to be cleaned,
When the vibrating body 71 is not vibrated, the vibrating body 71 located in the front-rear direction intermediate between the grounding wheels 37, 37 and the suction port 32 outside the lower portion of the suction port body 21 has the suction port 32 below the suction port body 21.
Cut off the space part of the part and the space part behind it, and
The suction force in the 32 part is improved, and the suction force in the suction port 32 part and the load applied to the grounding wheels 37, 37 at the time of vibration of the vibrating body 71 depend on the vibrating body 71 between the suction port 32 and the grounding wheels 37, 37. The repulsive force applied to the suction port body 21 by hitting the surface to be cleaned such as a fold can be suppressed, and the suction port body 21 can be prevented from moving up and down. Therefore, the suction efficiency is prevented from lowering due to the separation between the suction port 32 and the surface to be cleaned, and the running property of the suction port main body 21 is prevented from lowering.

In the above embodiment, only the diode 103 connected in series between the electromagnetic force 82 and the AC power supply is used as the magnetic force generation control means for generating the magnetic force at the electromagnet 82 at a constant frequency. Alternatively, an oscillator may be used. However, if an oscillator is used, the circuit configuration becomes very complicated and the cost becomes high. On the other hand, as in the above embodiment, if only the diode 103 is used as the magnetic force generation control means, the circuit configuration can be simplified and the cost can be reduced.

By the way, the graph of Fig. 7 is a resonance curve,
When the resonance frequency of the vibration system including the 71, the vibrating body 88, and the elastic plate 83 is 60 Hz, the relationship between the generation frequency of the magnetic force by the electromagnetic force 82 and the resonance magnification in the vibration of the vibrating body 71, that is, the vibration force is shown. Shows. As shown in FIG.
The resonance magnification becomes maximum due to resonance when the magnetic force generation frequency matches the resonance frequency, and becomes smaller as the magnetic force generation frequency deviates from the resonance frequency to either large or small. At that time, the resonance magnification decreases to 1 when the generation frequency of the magnetic force deviates to the smaller side from the resonance frequency, but decreases rapidly to 0 when the generation frequency of the magnetic force deviates to the larger side from the resonance frequency. . For example, when the magnetic force generation frequency is 70 Hz or higher, the vibrating body 71 hardly vibrates.

Here, if the magnetic force generation control means is an oscillator, even if the frequency of the AC power supply is 50 Hz or 60 Hz, the electromagnet 82
It is relatively easy to set the generation frequency of the magnetic force due to ω to match the resonance frequency of the vibration system. On the other hand, as in the above embodiment, when the magnetic force generation control means is only the diode 103, the generation frequency of the magnetic force is equal to the frequency of the AC power supply, and it depends on the difference in the frequency of the AC power supply. It is impossible to adjust the frequency of magnetic force generation. Therefore, when the frequency of the AC power supply is at least one of 50 Hz and 60 Hz, the magnetic force generation frequency does not match the resonance frequency.

However, in the above embodiment, the resonance frequency is 50 Hz and
Since it is set to around 60 Hz, which is higher than 60 Hz, when the frequency of the AC power supply is 60 Hz, not only can the vibrating body 71 be vibrated at the highest efficiency, but the frequency of the AC power supply is 50 Hz.
Even in the case of Hz, the vibrating body 71 can be vibrated to some extent efficiently, and a highly versatile suction port body for both 50 Hz and 60 Hz can be provided. It should be noted that, as described above, the resonance magnification decreases more rapidly when the magnetic force deviates from the resonance frequency to the larger one. Therefore, considering the error, it is perfect to set it slightly higher than the resonance frequency of 60 Hz. . That is, the resonance frequency is preferably 60 Hz or higher and in the vicinity of 60 Hz.

Incidentally, the suction port body of the above embodiment, as a driven tool for releasing the dust from the surface to be cleaned, rotating brushes 51, 54, 55.
Although it was also equipped with, the target suction inlet is a rotating bra 5
It is also possible to provide only the vibrating body 71 without 1,54,55.

(Effect of the invention) According to the suction port body of the electric vacuum cleaner according to claim 1, since the vibrating body is vibrated by the electromagnet, compared to the conventional case where the suction force is directly used to drive the vibrating body. The noise can be reduced, and the operation of the vibrating body can be made stable and reliable. Further, since the vibrating body is arranged between the grounding wheel on the lower rear side of the suction port body and the suction port on the lower surface of the suction port body, the grounding wheel is actuated by the suction force and the operating force at the suction port portion during the operation of the vibrating body. Since the suction port body is pressed by the load applied to the suction port body, it is difficult for the suction port body to move up and down even if a repulsive force is applied by the vibration of the vibrating body, so that the running property of the suction port body can be prevented from being impaired. At the same time, it is possible to prevent a decrease in suction efficiency due to the separation between the suction port and the surface to be cleaned.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the suction port body of the electromagnetic cleaner of the present invention, and FIG. 2 is a plan view of the same excepting the upper case,
FIG. 3 is a plan view of the switch portion of the same as above, FIG. 4 is a bottom view of the same as above, FIG. 5 is a cross-sectional view of the same as above, FIG.
FIG. 8 is a graph showing a resonance curve of the same as above, and FIG. 8 is a vertical sectional view showing a suction port of a conventional vacuum cleaner. 21 …… Suction port body, 27 …… Suction chamber that serves as an air passage, 29 …… Air passage chamber that serves as an air passage, 32 …… Suction port, 37 …… Grounding wheels, 41,4
3 ... Connection tube, 71 ... Vibrating body, 72 ... Vibrating roller as beater, 73 ... Elastic shaft, 81 ... Exciting device, 82 ... Electromagnet, 83 ... Elastic plate as elastic support, 85: a diaphragm made of a magnetically permeable member, 86: a connected body, 103: a diode which is a rectifying element as a magnetic force generation control means.

Claims (1)

[Claims] 1. A suction port main body having an air passage inside and having a suction port opening to the lower surface of the front side and communicating with the air passage, and having a longitudinal shape in the width direction, and the air passage in the suction port main body is a cleaner body. A connecting pipe communicating with the dust collecting chamber, a ground wheel disposed on the lower rear side of the suction port main body, and a lower surface of the suction port main body located at an intermediate position in the front-rear direction of the ground wheel and the suction port. A suction body of an electric vacuum cleaner, comprising: a vibrating body provided along a longitudinal direction of the suction body, and an electromagnet for generating a magnetic force at a constant frequency to vibrate the vibrating body.