JP2017185036A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an impact on a human body due to electrostatic discharge in a vacuum cleaner.SOLUTION: A vacuum cleaner is provided that comprises: an electric blower for generating a suction force; a chargeable battery for storing electric power to operate the electric blower; a grip part gripped by a user; a pipe part serving as a flow path of dust; a connection terminal connected to a power supply terminal of an external charging base when charging the battery; a dust collection container connected to the pipe part and for storing dust therein; and an extension pipe connected to the pipe part and serving as the flow path of dust. The pipe part, the grip part, and the extension pipe are made of a material having conductivity, so that the pipe part and the grip part, and the pipe part and the extension pipe are electrically connected. A lead wire is provided in the pipe part and the extension pipe. The lead wire has an energizing terminal. A terminal fixing member for fixing the energizing terminal is made of a material having conductivity to electrically connect the energizing terminal and the pipe part, or the energizing terminal and the extension pipe.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a vacuum cleaner.

Conventionally, there is a vacuum cleaner provided with a rechargeable battery inside a main body. Since such a vacuum cleaner can be charged from a charging stand connected to a commercial power source, the vacuum cleaner body can be used without being directly connected to the commercial power source and supplying power.
Such a vacuum cleaner includes an electric blower, a brush motor that drives a floor brush, a control means that controls these, a charging terminal that is a charged contact that is electrically connected to a charging stand, and obtains power, and these It has an electric circuit comprised with the conducting wire which electrically connects.
The vacuum cleaner also has structural parts made of synthetic resin, such as a floor brush casing, an extension pipe, a dust collector, and a main body case.
And the electric circuit is provided in the state electrically insulated by these structural component bodies.

JP 2014-124443 A

In a conventional vacuum cleaner, static electricity is generated in a structural part made of a synthetic resin due to friction with a surface to be cleaned and friction between a dust collecting portion and sucked dust. Thereby, a potential difference is generated between the structure and the electric circuit. Here, when setting the vacuum cleaner on the charging stand, the charging terminal is in a state exposed to the outside so as to come into contact with the power supply terminal serving as the charging contact of the charging stand.
Therefore, when a user touches a charging terminal constituting a part of the electric circuit in a state where a potential difference is generated between the structural component and the electric circuit, a rapid current flows between the charging terminal and the user, Discharge may occur. That is, the user may be shocked by electrostatic discharge.

  The present invention is for solving the above-described problems, and an object of the present invention is to prevent an impact on a human body due to electrostatic discharge in a vacuum cleaner.

  In order to solve the above problems, in an electric vacuum cleaner, an electric blower that generates a suction force, a rechargeable battery that stores electric power for operating the electric blower, a gripping part gripped by a user, and a dust passage A tube part, a connection terminal connected to the power supply terminal of the external charging base when charging the battery, a dust collecting container connected to the pipe part for storing dust inside, and a dust collector connected to the pipe part. And the tube portion, the gripping portion, and the extension tube are made of a conductive material, so that the tube portion and the gripping portion, and the tube portion and the extension tube are electrically The lead wire is provided in the tube portion and the extension tube, the lead wire has a current-carrying terminal, and the terminal fixing member that fixes the current-carrying terminal is made of a conductive material, and the current-carrying terminal and the tube portion, or The electrical terminal and the extension pipe are electrically connected.

  ADVANTAGE OF THE INVENTION According to this invention, the impact to the human body by electrostatic discharge can be prevented in a vacuum cleaner.

The perspective view 1 of the vacuum cleaner set which concerns on embodiment of this invention The perspective view 2 of the vacuum cleaner set which concerns on embodiment of this invention The longitudinal cross-sectional view of the principal part of the vacuum cleaner main body which concerns on embodiment of this invention The perspective view of the vacuum cleaner main body which concerns on embodiment of this invention The perspective view (partial expansion) of the vacuum cleaner main body which concerns on embodiment of this invention The disassembled perspective view (partial expansion) of the vacuum cleaner main body which concerns on embodiment of this invention

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a vacuum cleaner set T according to an embodiment of the present invention, showing a state where the vacuum cleaner body 2 and the charging stand 1 are separated. In FIG. 1, the direction of the arrow is the front side of the vacuum cleaner.
As shown in FIG. 1, the vacuum cleaner set T includes a charging stand 1 and a vacuum cleaner main body 2 (hereinafter, main body 2). The charging stand 1 includes a pedestal 3 and a support column 4. The recess 5 is formed on the front side of the upper surface 4 a of the support column 4. When charging the main body 2, the power supply terminal 6 for supplying power is provided in the recess 5.

The main body 2 is provided detachably with respect to the charging stand 1. The main body 2 includes an electric blower 7, a rechargeable battery unit 8, a housing 9, a dust collecting container 10, an extension tube 11, a suction port body 12, and a control board 8c (not shown). The electric blower 7 generates a suction force for sucking dust into a dust passage that reaches a suction port body 12, an extension pipe 11, a pipe portion 16, and a dust collecting container 10, which will be described later. Is provided. The battery unit 8 includes a plurality of batteries 8a not shown in FIG. The battery 8a can be charged.
Based on the input from the operation unit 15, the control board 8 c performs control when the electric blower 7, the brush motor 12 a provided in the suction port body 12, various display units, and the main body 2 are charged.

The housing 9 includes a housing portion 13, a gripping portion 14, an operation portion 15, a tube portion 16, a convex portion 17, a first housing cover 18, and a second housing cover 19.
The accommodating part 13 is formed in a cylindrical shape. The accommodating part 13 accommodates the electric blower 7, the battery unit 8, and the control board 8c. The gripping part 14 is a part that the user grips with a hand during use, and is formed on the front side of the storage part 13 with a gap from the storage part 13. The gripping part 14 is formed linearly in the same direction as the central axis of the housing part 13.

The operation unit 15 is provided on the front side of the grip unit 14. The pipe portion 16 is a portion that becomes a flow path for guiding dust to the dust collecting container 10 and is formed in a cylindrical shape. The pipe portion 16 is arranged in a straight line with the grip portion 14 below the grip portion 14.
The convex portion 17 is formed on the rear surface side of the tube portion 16. The convex portion 17 is provided with a charging terminal 17a. The charging terminal 17 a is in contact with and electrically connected to the power feeding terminal 6 in a state where the main body 2 is provided on the charging stand 1. The charging terminal 17a is electrically connected to the control board 8c through a lead wire.
The first housing cover 18 covers the near side of the grip part 14 and the near side of the operation part 15. The second housing cover 19 covers the front side of the pipe portion 16.

The dust collecting container 10 is formed in a cylindrical shape. The outer diameter of the dust collecting container 10 is formed in accordance with the outer diameter of the housing portion 13 of the housing 9. The dust container 10 is disposed below the housing portion 13 of the housing 9.
The dust collecting container 10 is disposed above the convex portion 17. The dust container 10 is detachably provided to the housing part 13 of the housing 9. The central axis of the dust collecting container 10 substantially coincides with the central axis of the electric blower 7 and the housing part 13 of the housing 9.
Further, the inside of the dust collecting container 10 communicates with the inside of the pipe portion 16. That is, the dust-containing air that has flowed through the inside of the pipe portion 16 flows into the dust collecting container 10.

The extension tube 11 is formed in a cylindrical shape. The extension pipe 11 is arranged on the holding part 14 and the pipe part 16 in a straight line. The upper end portion of the extension tube 11 is connected to the lower end portion of the tube portion 16. The front side of the extension tube 11 is covered with an extension tube cover 11a.
The suction inlet 12 is formed in a rectangular parallelepiped shape. The suction port body 12 includes a rotating brush 12b and a brush motor 12a that rotationally drives the rotating brush 12b. Moreover, the suction inlet 12 is provided with the connection pipe 120 connected with the lower end part of the extension pipe 11 in the center part of the width direction.
Inside the main body 2 configured as described above, the control board 8c, the operation unit 15, the electric blower 7, the brush motor 12a, the various display units, the battery unit 8, and the charging terminal 17a are connected to the lead wire. 50 (51, 52, 53) etc. are electrically connected to form an electric circuit.

Next, the attachment of the charging stand 1 and the main body 2 will be described with reference to FIGS. 2 and 3.
FIG. 2 is a perspective view of the electric vacuum cleaner according to the embodiment of the present invention, and shows a state in which the cleaner main body 2 is attached to the charging stand 1. FIG. 3 is a longitudinal sectional view of a main part of the electric vacuum cleaner main body 2 according to the embodiment of the present invention.

In FIG. 2, the charging stand 1 is connected to an external power source via a power cable (not shown). The main body 2 is attached to the charging stand 1 in an upright state. At this time, the dust container 10 is disposed above the support column 4. The suction port body 12 is placed on the front side of the base 3.
The main body 2 is electrically connected to the charging stand 1 by being attached to the charging stand 1. That is, the charging terminal 17a and the power feeding terminal 6 are electrically connected. As a result, the battery 8a (not shown in FIG. 2) of the battery unit 8 is charged with power from the external power source.

  As shown in FIG. 3, when the main body 2 is attached to the charging stand 1, the convex portion 17 of the main body 2 is inserted into the concave portion 5 of the charging stand 1. As a result, the main body 2 is disposed at an appropriate position with respect to the charging stand 1, and the charging terminal 17 a and the power feeding terminal 6 are electrically connected.

Next, how to use the main body 2 will be described with reference to FIG.
FIG. 4 is a perspective view of the main body 2 according to Embodiment 1 of the present invention.
The user cleans by holding the grip 14. At this time, the suction port body 12 faces the floor surface on the front side of the user.

  When the user operates the operation unit 15, the motor of the electric blower 7 rotates using electric power from the battery. The fan of the electric blower 7 rotates following the rotation of the motor. The electric blower 7 starts intake and exhaust by the rotation of the fan. Suction air is generated in each air passage of the main body 2 by the intake and exhaust.

When the user operates the operation unit 15, the brush motor 12a rotates using the power from the battery 8a. The rotating brush 12b rotates following the rotation of the brush motor 12a.
Due to the suction air, dust on the floor surface is sucked into the suction port body 12 together with air. At this time, the rotating brush 12b scrapes off dust on the floor surface. Thereafter, the dust-containing air passes through the inside of the suction port body 12, the inside of the extension pipe 11, and the inside of the pipe portion 16 and is sent to the dust collecting container 10.

The dust collection container 10 exhibits a cyclone separation function. As a result, the dust-containing air swirls inside the dust collection container 10. Dust is separated from the dust-containing air by centrifugal force. The separated dust is temporarily stored in the dust collecting container 10.
Then, clean air, which is air from which dust has been separated, is discharged from the dust collecting container 10. The clean air is sucked into the electric blower 7. The electric blower 7 discharges the clean air to the outside of the main body 2.
The dust collected in the dust collection container 10 can be discharged to the outside by removing the dust collection container 10 from the housing 9.

Next, the main part of this invention is demonstrated using FIGS. FIG. 5 is a perspective view showing a state in which the extension pipe 11 of the main body 2 is detached from the pipe portion 16. FIG. 6 is an exploded perspective view of the electric vacuum cleaner main body 2.
The extension pipe 11 is detachably connected to the pipe portion 16. The extension pipe 11, the pipe part 16, and the grip part 14 are formed of a resin material having a volume specific resistance value and a surface specific resistance value smaller than that of a general resin material. The resin material having a small volume specific resistance value is, for example, a resin material mixed with carbon fiber, and the resin material having a small surface specific resistance value is, for example, a resin material containing an antistatic agent. That is, these members are configured to have conductivity.

Therefore, the extension pipe 11, the pipe part 16, and the grip part 14 are electrically connected to each other in a connected state.
Incidentally, the term “conductivity” as used herein means that current does not flow through the extension tube 11, tube portion 16, and gripping portion 14 at a voltage at which the brush motor 12 a is operated, but the current flows at a relatively high voltage generated by static electricity. It is conductive enough to flow.

  Further, a tube lead wire 51 reaching the end portion 16 a of the tube portion 16 is provided in a space surrounded by the front surface of the tube portion 16 and the second housing cover 19. The tube lead 51 is electrically connected to the control board 8 c and is a power line that supplies power to the brush motor 12 a provided in the suction port body 12.

An energization terminal 51 a is provided at the end of the tube lead wire 51. The energizing terminal 51a is connected to a pin-like energizing terminal 52a provided on the extension pipe 11 described later. The energizing terminal 51 is provided on the terminal fixing member 60.
The terminal fixing member 60 is provided at the end portion 16 a of the tube portion 16. That is, the energization terminal 51 a is provided on the end portion 16 a via the terminal fixing member 60.

The terminal fixing member 60 is formed of a resin material having a small volume specific resistance value and configured to be conductive, like the extension tube 11, the tube portion 16, and the grip portion 14. That is, since the conductive terminal 51 a is provided on the conductive terminal fixing member 60, the conductive terminal 51 a is in a state of being electrically connected to the tube portion 16 via the terminal fixing member 60.
Here, since the pipe part 16 and the holding part 14 are comprised from the member which has electroconductivity, and are mutually contacting, it is in the state electrically connected. In addition, as described above, the energization terminal 51 a is in a state of being electrically connected to the tube portion 16. Accordingly, the energization terminal 51a and the grip portion 14 are in an electrically connected state.

The energizing terminal 51 a is provided at the end of the tube lead 51. Therefore, the energization terminal 51 a is a part of an electric circuit formed inside the main body 2. Since the energization terminal 51a is electrically connected to the tube portion 16 and the grip portion 14, the electric circuit and the tube portion 16 and the grip portion 14 are also electrically connected.
Next, an extension pipe lead wire 52 is provided inside the extension pipe 11. The extension pipe lead wire 52 is a power line that supplies power to the brush motor 12 a provided in the suction port body 12. The extension pipe lead wire 52 is provided with a pin-like energization terminal 52a at one end. The pin-shaped energization terminal 52 a is located at the upper end portion 11 a that is an end portion connected to the tube portion 16.

When the pipe part 16 and the extension pipe 11 configured in this way are connected, one end of the extension pipe 11 enters the inside from the end part 16a of the pipe part 16 and communicates therewith, and the pin-like energizing terminal 52a is connected to the energizing terminal 51a. Contact.
Thereby, the pipe part 16 and the extension pipe 11 communicate with each other as a dust path, and the extension pipe lead wire 52 and the pipe part lead wire 51 are electrically connected.

Next, the connection between the extension pipe 11 and the suction port body 12 will be described.
The lower end portion 11 b of the extension tube 11 has the same configuration as the end portion 16 a of the tube portion 16. Moreover, the edge part 120a of the suction inlet body connection pipe | tube 120 of the suction inlet body 12 is the same structure as the upper end part 11a of an extension pipe | tube. Accordingly, the extension pipe 11 and the suction port body 12 are connected in the same manner as the extension pipe 11 and the pipe portion 16.
As a result, the suction port lead wire 53 and the extension tube lead wire 52 are electrically connected to each other so that power can be supplied to the brush motor 12a.

The following effects can be acquired by using the main body 2 which comprised each part as mentioned above.
A structural part made of resin such as the extension tube 11, the tube portion 16, and the grip portion 14 and an electric circuit including the charging terminal 17 a and the lead wires 50 (51, 52, 53) are connected to the tube portion lead wire 51. Since the current-carrying terminal 51a is electrically connected via the terminal fixing member 60, the structure portion and the electric circuit can be kept at the same potential.
That is, even when static electricity is generated in the structural component when the vacuum cleaner 2 is used, charges are transferred between the structural component and the electric circuit at the portion of the energization terminal 51a, so that the structural component and the electric circuit have the same potential. Keep like.
Although the conductive fixing member is used as the fixing member for the energization terminal 51a, the same effect can be obtained even when a conductive member is used as the fixing member for the pin-like conduction terminal 52a. Can do.

Furthermore, since the grip 14 is made of a conductive member, the user who holds the grip 14 can be grounded, and extra charge can be prevented from accumulating in the vacuum cleaner body 2 due to static electricity. In particular, since the grip portion 14 comes into contact with a person on the palm surface, it is possible to gently release (ground) the electric charge to the outside of the vacuum cleaner.
Thereby, when the charging terminal 17a is touched, it is possible to prevent a sudden discharge from occurring at the position. That is, the impact on the human body due to electrostatic discharge can be prevented.

Note that the terminal fixing member 60 may be configured integrally with the pipe portion 16 or the extension pipe 11. Thereby, since it is not necessary to comprise the terminal fixing member 60 with a single item, the number of parts can be reduced. Moreover, since the terminal fixing member 60 and the pipe part 16 or the extension pipe 11 are comprised by integral components, the electroconductivity between the end fixing member 60 and the pipe part 16 or the extension pipe 11 can be improved.
In addition to the above effects, the tube portion 16 and the extension tube 11 can be made conductive by using a resin material mixed with carbon fiber to form the light and strong tube portion 16 and the extension tube 11. Can do.

DESCRIPTION OF SYMBOLS 1 Charging stand, 2 main body, 3 base, 4 support | pillar, 5 recessed part, 6 feeding terminal, 7 electric blower, 8 battery unit, 8a battery, 8c control board, 9 housing | casing, 10 dust collecting container, 11 extension pipe, 11a extension Tube cover, 12 Suction port, 12a Brush motor, 12b Rotating brush, 14 Gripping unit, 15 Operation unit, 16 Tube unit, 17a Charging terminal, 18 First housing cover, 19 Second housing cover, 50 (51 , 52, 53) Lead wire, 51a conducting terminal, 52a pin-shaped conducting terminal, 60 terminal fixing member

Claims (4)

An electric blower that generates suction force;
A rechargeable battery for storing electric power for operating the electric blower;
A gripping part gripped by the user;
A pipe part that becomes a dust passage,
A connection terminal connected to a power supply terminal of an external charging base when charging the battery;
A dust collection container connected to the pipe portion and storing dust therein;
An extension pipe connected to the pipe portion to be a dust flow path;
Have
The tube portion, the grip portion, and the extension tube are made of a conductive material, and the tube portion and the grip portion, and the tube portion and the extension tube are electrically connected,
The pipe portion and the extension pipe are provided with lead wires, and the lead wires have current-carrying terminals,
A terminal fixing member for fixing the energizing terminal is made of a conductive material, and electrically connects the energizing terminal and the pipe portion or the energizing terminal and the extension pipe. Machine.   The vacuum cleaner according to claim 1, wherein the terminal fixing member is integrally formed with the extension pipe or the pipe portion.   3. The electric vacuum cleaner according to claim 1, wherein the conductive material is a material in which carbon fiber is mixed with synthetic resin.   4. The vacuum cleaner according to claim 1, wherein the conductive material is a resin material containing an antistatic agent.