JP4963270B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and relates to a vacuum cleaner that separates dust and air using centrifugal force.

  Conventionally, various vacuum cleaners have been proposed as vacuum cleaners used in general households. As shown in FIG. 22, the electric vacuum cleaner 101 generally includes a suction port body 105 that sucks in air containing dust, a cleaner main body 102 that accumulates dust contained in the sucked air, and the like. The vacuum cleaner main body 102 and the suction port body 105 are connected by an extension hose 103 and an extendable extension pipe 104. A negative pressure generation source 106 for sucking air is disposed in the cleaner body 102 (see FIG. 23). In particular, in a cyclone type vacuum cleaner, as shown in FIG. 23, air containing dust sucked from the suction port body 105 is separated into dust and air using a centrifugal force, as shown in FIG. A dust collecting unit 107 for depositing the separated dust is disposed.

  The dust collection unit 107 includes a dust cup 108 for accumulating dust, a dust partition 112 for catching dust, and the like. The dust cup 108 is provided with an introduction port 109 that is connected to the suction port body 105 and the like and feeds air containing dust into the dust cup 108. The dust partition 112 is disposed inside the dust cup 108 and has a function of capturing dust contained in the air that is fed from the introduction port 109 and swirls along the inner peripheral surface of the dust cup 108.

The dust accumulated in the dust cup 108 is discarded by removing the dust collecting portion 107 from the cleaner body 102. At this time, the dust collector 107 is detached from the cleaner body 102 by hooking the grip 117 provided on the filter cover 116 of the dust collector 107 so as to be lifted by hand. Note that there is Patent Document 1 as one of the documents disclosing a cyclone type electric vacuum cleaner provided with a dust collecting unit including a dust cup.
JP 2006-20897 A

  However, the conventional cyclone type vacuum cleaner has the following problems. As shown in FIG. 22 and FIG. 23, in the cyclonic vacuum cleaner 101, dust is sucked together with air from the suction port body 105. The air containing dust flows through the extension hose 103 and the like, and is sent in a tangential direction from the introduction port 109 into the cylindrical dust cup 108. The air sent into the dust cup 108 swirls in the dust cup 108, and dust contained in the air is separated from the air and accumulated in the dust cup 108. The air from which the dust is separated in the dust cup 108 passes through the filter 115 and the like, and is then discharged out of the cleaner body 102 (see arrows).

  In a series of air flows (see arrows) sent from the suction port body 105 to the outside of the cleaner main body 102 through the extension hose 103 and the dust cup, particularly in the dust cup 108, the air runs along the inner peripheral surface of the dust cup 108. Swirl with the dust. The dust cup 108 is made of a resin, so that static electricity is generated between the swirling air and the dust cup 108 due to friction or the like, and the static electricity is charged in the dust cup 108. When the dust cup 108 is charged, the user may receive an electric shock due to static electricity when the user holds the grip portion 117 of the dust collection portion 107 by hand in order to discard the dust accumulated in the dust cup 108.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a vacuum cleaner in which charging due to static electricity is suppressed.

  A vacuum cleaner according to the present invention is a vacuum cleaner that separates air containing dust into air and dust using centrifugal force and deposits the dust, and includes a vacuum cleaner body, a dust collecting portion, and a conductor portion. And a static elimination unit. The dust collecting part is detachably attached to the main body of the vacuum cleaner, and is provided with a bottomed dust cup for depositing dust separated from air by forming an inlet for introducing air containing dust and an opening for air outlet. Contains. The conductor portion is formed in the dust cup. The static eliminator is formed in the main body of the vacuum cleaner, and collects static electricity generated in the dust cup through the conductor and releases it.

  According to this configuration, static electricity generated in the dust cup is neutralized by the neutralization unit via the conductor unit. As a result, the dust cup is not charged by static electricity, and the user is not subjected to an electric shock when the dust collecting part is hooked with fingers of the hand in order to throw away the accumulated dust.

  More specifically, such a conductor portion is preferably plating formed on the surface of a dust cup. Moreover, it is preferable that it is a conductive sheet formed on the surface of the dust cup.

  The dust cup may include a cylindrical portion and a bottom portion attached below the cylindrical portion, and a conductor portion may be formed on at least the surface of the bottom portion. Furthermore, such a bottom part may be attached to the cylinder part so as to be openable and closable.

  In addition, as the static elimination unit, an electrode unit that is provided in the vacuum cleaner main body and that makes contact with the conductor unit to release static electricity to the commercial power line, and an electrode unit and the commercial power line with the dust collecting unit attached to the vacuum cleaner main body. It is preferable that the switch part which performs electrical connection of these is included. Or it is good also as an electrode part which escapes a static electricity to a commercial power line as a static elimination part spaced apart from a conductor part.

  A vacuum cleaner according to an embodiment of the present invention will be described. As shown in FIGS. 1, 2, and 3, the electric vacuum cleaner 1 includes a cleaner body 2, an extension hose 3, an extendable extension pipe 4, and a suction port body 5. The vacuum cleaner body 2 is provided with a negative pressure generating source 6 that generates a negative pressure and a dust collecting portion 7 that accumulates dust. The negative pressure generation source 6 includes a motor, a fan, and the like. The extension hose 3 and the expansion / contraction extension pipe 4 connected to the cleaner body 2 communicate with the negative pressure generation source 6. In the suction port body 5, the dust falling on the floor or the like is sucked together with air by the negative pressure generated by the negative pressure generation source 6. In the dust collection unit 7, dust contained in the sucked air is separated from the air and accumulated. The dust collection part 7 is detachably attached to the cleaner body 2 so that accumulated dust can be discarded.

  The dust collection unit 7 and the structure around it will be described in more detail. As shown in FIGS. 3 and 4, the dust collection unit 7 includes a dust cup 8, a dust partition 12, an exhaust cylinder 13, a dust cup lid 14, a filter 15, and a filter cover 16. The dust cup 8 has a bottom, and is formed with an introduction port 9 for introducing air containing dust and an opening 10 serving as an air outlet. The dust cup lid 14 is attached so as to close the opening 10 of the dust cup 8.

  The dust partition 12 is attached to the dust cup lid 14 together with the exhaust tube 13, and has a function of capturing dust contained in the air that is fed from the introduction port 9 and swirls along the inner peripheral surface of the dust cup 8. The filter 15 is disposed between the dust cup lid 14 and the filter cover 16, and has a function of capturing dust remaining in the air sent out from the dust cup 8. The filter cover 16 is provided with a gripping portion 17. By lifting the gripping part 17 in such a manner that it is hooked up with fingers of the hand, the dust collecting part 7 can be detached from the cleaner body 2, and the dust collecting part 7 can be attached to and detached from the cleaner body 2. Is done.

  As shown in FIG. 5, an electrode 19 in contact with the dust cup 7, the electrode 19, and a commercial power line are electrically connected to a portion (mounting portion 20) of the cleaner body 2 to which the dust collecting portion 7 is attached. A switch unit 18 to be connected is provided. As shown in FIG. 6, a pattern of the plating 30 is formed on the surface of the dust cup 8 over a predetermined distance upward from the bottom of the dust cup 8. As shown in FIG. 7, in a state where the dust cup 8 is not attached to the cleaner body 2, the plating 30 does not contact the electrode 19, and the switch unit 18 is in an off state.

  On the other hand, as shown in FIG. 8, when the dust cup 8 is attached to the cleaner body 2, the plating 30 of the dust cup 8 contacts the electrode 19. And the projection part 11 provided in the dust cup 8 contacts the switch part 18 through the opening 20a, the switch is turned on, and the electrode 19 is electrically connected to the commercial power line 24.

  Next, operation | movement of the vacuum cleaner 1 mentioned above is demonstrated. First, as shown in FIG. 9, when the power is turned on, the negative pressure generating source 6 disposed in the cleaner body 2 is activated, and air is sucked together with dust from the suction port body 5. The sucked air is guided from the suction port body 5 to the dust collecting portion 7 of the cleaner body 2 through the expansion / contraction extension pipe 4 and the extension hose 3. As shown in FIG. 10, the air guided to the dust collection unit 7 is sent in a tangential direction from the inlet 9 of the dust cup 8 into the cylindrical dust cup 8.

  The air sent into the dust cup 8 swirls like a tornado by flowing along the inner peripheral surface of the dust cup 8. While the dust-containing air swirls in the dust cup 8, dust contained in the air is captured by the plurality of ribs provided in the dust partition 12, and the dust and air are separated. Dust trapped in the ribs gradually accumulates in the dust cup 8.

  On the other hand, the air separated from the dust passes through the mesh provided in the exhaust pipe 13 above the dust partition 12 and then passes through the filter 15. The mesh and the filter 15 trap dust remaining in the air. Thus, the air from which the dust has been almost completely removed passes through the outlet of the filter cover 16 and is finally exhausted out of the cleaner body 2.

  During such cleaning, in the dust cup 8, static electricity is generated between the swirling air and the dust cup 8. As shown in FIG. 11, in the above-described electric vacuum cleaner 1, the surface of the dust cup 8 is plated 30, and in the state of cleaning, the plating 30 of the dust cup 8 is the main body of the vacuum cleaner. 2 is in a state of being electrically connected to the commercial power line 24 via the electrode 19 provided on the line 2.

  Since the plating of the dust cup 8 is electrically connected to the commercial power line 24, the static electricity generated in the dust cup 8 due to the swirling of air or the like (see arrow 51) flows to the commercial power line 24 (see arrow 52). ), The static electricity is eliminated without accumulating in the dust cup 8. This prevents the user from receiving an electric shock when, for example, the user grasps the grip 17 of the dust collector 7 with his / her finger in order to throw away the accumulated dust.

  Regarding the degree of electric shock due to static electricity or the like, as shown in FIG. 12, for example, the relationship between human body charging and the strength of electric shock is generally known. In the above-described vacuum cleaner 1, the electric shock corresponding to the charged potential of the dust cup 8 can be eliminated, and the vacuum cleaner 1 can be used more comfortably.

Modification 1
Here, a modified example of the electrode and the switch unit provided in the cleaner body will be described. As shown in FIG. 13, an insulator 21 urged upward by a spring 22 is disposed on the mounting portion 20 of the cleaner body. The electrode 19 is disposed so as to be biased toward the insulator 21 by the spring 23. In a state where the dust cup 8 is not attached to the cleaner body, the insulator 21 protrudes upward from the mounting portion 20, and the electrode 19 is in contact with the insulator 21.

  On the other hand, as shown in FIG. 14, in a state where the dust cup 8 is attached to the cleaner body, the insulator 21 is pushed down by the dust cup 8. The insulator 21 is pushed down and biased by the spring 23, so that the electrode 19 contacts the plating 30 of the dust cup 8. When the electrode 19 comes into contact with the plating 30 of the dust cup 8, static electricity generated in the dust cup 8 flows to the commercial power line 24, and the dust cup 8 is discharged. Thereby, it can prevent that a user receives the electric shock by static electricity.

Modification 2
Another modification of the electrodes provided in the cleaner body will be described. As shown in FIG. 15, a predetermined opening 20 a is provided in the mounting portion 20 in the cleaner body. An electrode 19 is disposed immediately below the opening 20a that is separated from the opening 20a by a predetermined distance. In a state where the dust cup 8 is not attached to the cleaner body, the electrode 19 and the plating 30 of the dust cup 8 are sufficiently separated from each other.

  On the other hand, as shown in FIG. 16, in a state where the dust cup 8 is attached to the cleaner body, the electrode 19 and the plating 30 of the dust cup 8 are spaced apart from each other, and both are in a non-contact state. is there. The distance L between the plating 30 of the dust cup 8 and the electrode 19 is set to a predetermined distance according to the charged voltage so that static electricity charged in the dust cup 8 can escape to the electrode in a non-contact manner.

  In general, when the charged voltage of one conductor is, for example, 1 KV, it is known that static electricity is discharged from the one conductor toward the other conductor if the distance from the other conductor is about 1 mm. Then, in the case of the dust cup 8 of the vacuum cleaner 1, the distance between the plating 30 and the electrode 19 is set to about 2 to 3 mm, for example, so that the static electricity charged in the dust cup 8 can be efficiently discharged to the electrode 19. And the dust cup 8 can be discharged.

Modification 3
In the vacuum cleaner 1 described above, the pattern of the plating 30 formed on the dust cup 8 is exemplified by the pattern of the plating 30 formed on the bottom of the dust cup 8 and a predetermined distance upward from the bottom. Here, a modified example of the plating pattern formed on the dust cup will be described. In the area where the plating is formed in the dust cup, light is reflected, so that the inside of the dust cup cannot be visually observed. Therefore, the plating pattern needs to be a pattern that allows the dust accumulation in the dust cup to be visually confirmed from the outside of the cleaner body.

  Then, as a plating pattern, for example, a pattern of a grid-like plating 30 may be formed on the surface of the dust cup 8 as shown in FIG. Further, as shown in FIG. 18, a pattern of plating 30a is formed on the bottom portion of the dust cup 8, and a pattern of striped plating 30b extending upward from the pattern of the plating 30a on the bottom is formed. May be.

  Furthermore, as shown in FIG. 19, a pattern of plating 30 may be formed in the region of the dust cup 8 that is hardly visible from the outside of the cleaner body. By using such a pattern of the plating 30, the dust accumulation in the dust cup 8 can be visually observed without being obstructed by the plating pattern, and the dust cup 8 can be reliably discharged.

  Since the pattern of the plating 30 needs to be brought into contact with or close to the electrode 19 (see FIG. 11 and the like), it is desirable that the pattern be formed on the outer surface of the dust cup 8. A plating pattern may also be formed on the inner surface, and the plating pattern formed on the inner surface may be electrically connected to the plating pattern formed on the outer surface.

Modification 4
Here, a modified example of the dust cup 8 will be described. In the vacuum cleaner 1 mentioned above, the dust cup 8 with the bottom having the pattern of the plating 30 formed on the surface is taken as an example of the dust cup 8 (see FIG. 6 and the like). As the dust cup, for example, as shown in FIG. 20, a dust cup 8 constituted by a bottom portion 8a and a cylindrical portion 8b may be applied. In this case, it is necessary to make at least the surface of the bottom 8a conductive. Moreover, as shown in FIG. 21, it is good also as the dust cup 8 which enabled such opening and closing of the bottom part 8a with respect to the cylinder part 8b.

  Moreover, in embodiment mentioned above, plating was mentioned as a conductor part formed in the surface of a dust cup. The conductor part is not limited to plating as long as it is a conductor part that can be discharged to the static electricity charged in the dust cup in close contact with the dust cup, for example, a conductive sheet or foil, It may be transferred to the surface of the dust cup by hot stamping.

  The embodiment disclosed this time is an example, and the present invention is not limited to this. The present invention is defined by the terms of the claims, rather than the scope described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a perspective view of the vacuum cleaner concerning an embodiment of the invention. In the embodiment, it is a side view which shows a cleaner main body. In the embodiment, it is sectional drawing which shows a cleaner main body. In the same embodiment, it is a disassembled perspective view which shows the structure of a dust collection part. In the embodiment, it is a fragmentary perspective view which shows the part of the cleaner main body to which a dust collection part is attached. In the embodiment, it is a fragmentary perspective view which shows the dust collection part and the part of the cleaner main body to which a dust collection part is attached. In the embodiment, it is a fragmentary perspective view which shows the state before a dust collection part is attached to a cleaner body. In the embodiment, it is a fragmentary perspective view which shows the state after a dust collection part was attached to the cleaner body. In the same embodiment, it is a perspective view for demonstrating operation | movement of a vacuum cleaner. In the embodiment, it is a fragmentary sectional view which shows the dust collection part for demonstrating operation | movement of a vacuum cleaner. In the embodiment, it is a fragmentary perspective view which shows the dust cup and its periphery for demonstrating operation | movement of a vacuum cleaner. In the same embodiment, it is a figure which shows the relationship between a human body charge and the intensity | strength of an electric shock. In the embodiment, it is a fragmentary perspective view which shows the state before the dust collection part of the vacuum cleaner which concerns on the modification 1 is attached to a cleaner body. In the embodiment, it is a fragmentary perspective view which shows the state after the dust collection part of the vacuum cleaner which concerns on the modification 1 was attached to the cleaner body. In the embodiment, it is a fragmentary perspective view which shows the state before the dust collection part of the vacuum cleaner which concerns on the modification 2 is attached to a cleaner body. In the embodiment, it is a fragmentary perspective view which shows the state after the dust collection part of the vacuum cleaner which concerns on the modification 2 was attached to the cleaner body. In the same embodiment, it is a perspective view which shows an example of the pattern of the plating formed in the dust cup of the vacuum cleaner which concerns on the modification 3. FIG. In the same embodiment, it is a perspective view which shows the other example of the pattern of the plating formed in the dust cup of the vacuum cleaner which concerns on the modification 3. FIG. In the same embodiment, it is a perspective view which shows the other example of the pattern of the plating formed in the dust cup of the vacuum cleaner which concerns on the modification 3. FIG. In the embodiment, it is a perspective view which shows an example of the dust cup of the vacuum cleaner which concerns on the modification 4. FIG. In the same embodiment, it is a perspective view which shows the other example of the dust cup of the vacuum cleaner which concerns on the modification 4. FIG. It is a perspective view of the conventional vacuum cleaner. It is sectional drawing which shows the cleaner body in the conventional electric cleaning.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Vacuum cleaner, 2 Vacuum cleaner main body, 3 Extension hose, 4 Extendable extension pipe, 5 Suction port body, 6 Negative pressure generation source, 7 Dust collection part, 8 Dust cup, 8a Bottom part, 8b Tube part, 9 Inlet port, DESCRIPTION OF SYMBOLS 10 Opening, 11 Protruding part, 12 Dust partition, 13 Exhaust pipe, 14 Dust cup lid, 15 Filter, 16 Filter cover, 17 Holding part, 18 Switch part, 19 Electrode, 20 Mounting part, 20a Opening part, 21 Insulator , 22, 23 Spring, 24 Commercial power line, 30 Plating.

Claims (3)

A vacuum cleaner that deposits dust by separating air containing dust into air and dust using centrifugal force,
The vacuum cleaner body,
An inlet for introducing air containing dust and an opening serving as an outlet for air are formed in the vacuum cleaner body so as to be detachable, and includes a bottomed dust cup for depositing the dust separated from the air. A dust collector;
A conductor formed in the dust cup;
A static elimination unit that is formed in the vacuum cleaner body and collects and discharges static electricity generated in the dust cup via the conductor .
The static eliminator is
An electrode part that is provided in the vacuum cleaner main body, contacts the conductor part, and releases static electricity to a commercial power line;
A switch unit that electrically connects the electrode unit and the commercial power line in a state where the dust collecting unit is attached to the vacuum cleaner body;
A protrusion provided on the dust cup;
Including
In the static eliminator, when the protrusion is moved, the switch part is turned on or off, and the protrusion comes into contact with the switch part while the dust cup is attached to the cleaner body. The vacuum cleaner which the said switch part will be in an ON state and the said electrode part will be electrically connected to a commercial power line . A vacuum cleaner that deposits dust by separating air containing dust into air and dust using centrifugal force,
The vacuum cleaner body,
An inlet for introducing air containing dust and an opening serving as an outlet for air are formed in the vacuum cleaner body so as to be detachable, and includes a bottomed dust cup for depositing the dust separated from the air. A dust collector;
A conductor formed in the dust cup;
A static elimination unit that is formed in the vacuum cleaner main body and collects and discharges static electricity generated in the dust cup via the conductor.
With
The static eliminator is
An electrode part that is provided in the vacuum cleaner main body, contacts the conductor part, and releases static electricity to a commercial power line;
An elastic member;
An insulator biased upward by the elastic member;
Including
In the static eliminator, when the dust cup is not attached to the cleaning body, the electrode part is in contact with the insulator, and the dust cup is attached to the cleaner body, An electric vacuum cleaner in which an insulator moves, the electrode part comes into contact with the conductor part, and the electrode part is electrically connected to the conductor part . A vacuum cleaner that deposits dust by separating air containing dust into air and dust using centrifugal force,
The vacuum cleaner body,
An inlet for introducing air containing dust and an opening serving as an outlet for air are formed in the vacuum cleaner body so as to be detachable, and includes a bottomed dust cup for depositing the dust separated from the air. A dust collector;
A conductor formed in the dust cup;
A static elimination unit that is formed in the vacuum cleaner main body and collects and discharges static electricity generated in the dust cup via the conductor.
With
The static eliminator is provided in the cleaner body, and includes an electrode part that contacts the conductor part and releases static electricity to a commercial power line,
An electric vacuum cleaner in which a plating pattern is formed in an area that is invisible from the outside of the main body of the vacuum cleaner including the bottom of the dust cup and the area extending from the bottom to the top of the dust cup as the conductor portion .

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