JPH0373285B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner, and more particularly to the structure of a suction port of a small vacuum cleaner driven by a battery.

(Prior art) This type of small vacuum cleaner uses a battery as a power source to rotate a fan to suction dust, but the suction power is limited by the battery capacity, and the suction power is small.
Dust cannot be sucked unless the suction port is brought close to the surface to be cleaned, and if the suction port is brought too close to the surface to be cleaned, the surface to be cleaned is likely to be damaged. Therefore, for example, as described in Japanese Utility Model Application Publication No. 36-8954, a brush stand with brush bristles is placed around the suction port formed in the front part of the dust collection case against the surface of the suction port. A structure is conceivable in which the suction port is mounted so as to be rotatable around a left-right axis, and the suction force for dust can be maintained without bringing the suction port closer than necessary to the surface to be cleaned.

(Problems to be Solved by the Invention) The brush stand described in the above-mentioned Japanese Utility Model Publication No. 36-8954 has a structure in which it is formed into an elongated rectangular frame so as to surround the suction port. Therefore, when rotating around the horizontal axis of the brush stand,
The front and rear inner edges come into contact with the front and rear outer surfaces of the suction port, restricting the range of rotation in the front and rear direction, preventing any gaps between the brush stand and the floor, making it difficult for large dust such as paper scraps to be sucked in. There was a problem.

The present invention was made in view of the above-mentioned problems, and is a vacuum cleaner that can maintain suction power for dust without bringing the suction port closer than necessary to the surface to be cleaned. To provide a vacuum cleaner in which a vacuum cleaner is formed and can reliably suck even large amounts of dust.

[Structure of the Invention] (Means for Solving the Problems) The vacuum cleaner of the present invention includes a vacuum cleaner main body that includes a built-in electric motor for rotating a fan and a power source battery for the electric motor, and has a handle, and the vacuum cleaner. A brush stand consisting of a dust collection case that is detachably attached to the front part of the main body, has a suction port, and houses a filter device, and has brush bristles around the suction port formed at the front part of the dust collection case. is attached to the suction port surface so as to be rotatable about an axis in the left-right direction.

(Function) When cleaning, the vacuum cleaner of the present invention cleans by contacting the brush bristles of the brush stand provided around the suction port of the dust collection case. During this cleaning, the brush bristles scrape up and suck in dust, and when the main body of the vacuum cleaner is moved back and forth, left and right, and the angular position of the suction port and the surface to be cleaned changes, the brush stand follows and collects dust from the surrounding area. is collected with the bristles of the brush, allowing efficient cleaning without damaging the cleaning surface, regardless of the shape of the suction port. In addition, when large dust particles such as paper scraps are sucked in, the brush stand, which is rotatably attached to the suction port of the dust collection case, has a notch at the top and is formed into a roughly U-shape, so the brush bristles are removed from the suction port. The sides and bottom rear part of the case are enclosed and sealed, and the upper front part is opened to form a gap between the surface to be cleaned and the dust collection case, and the brush bristles reliably suck the dust without pressing it. .

(Embodiment) The configuration of an embodiment of the vacuum cleaner of the present invention will be described with reference to the drawings.

In Fig. 1, reference numeral 1 denotes the main body of the vacuum cleaner, the rear surface of which is formed into a planar shape that can be placed vertically as a mounting section, and the front surface of which has a ventilation hole 2 formed with groove-like ventilation holes, as shown in 8th figure. 3 is formed in a protruding manner, and as shown in FIG. 1, a handle 4 is integrally formed on the upper part. As shown in FIG. 7, a battery storage section 6 is formed vertically at the rear of the vacuum cleaner body 1 from the rear side of the handle 4 to the bottom, and the bottom of the battery storage section 6 is open. A portion 7 is formed, and engagement grooves 8 are formed on both sides of the opening 7 in the front-rear direction. A lid 9 that can open and close the opening 7 is slidably engaged with the engagement groove 8 on both sides.

Further, as shown in FIG. 1, the vacuum cleaner main body 1
Inside the handle 4, a motor storage part 10 is formed at the lower part of the handle 4, facing the ventilation part 3. Further, a circuit board storage section 1 is located below the handle 4 between the motor storage section 10 and the battery storage section 6.
1 is formed.

Further, as shown in FIG. 8, the vacuum cleaner main body 1
At the front lower part of the dust collecting case 12, locking parts 15, 15, which are open on the upper surface and which removably lock the engaging part 14 which projects downward and integrally at the rear lower end of the dust collection case 12, are formed on the left and right sides. A central space between the locking portions 15, 15 is formed into a suction port storage portion 16, and a movable engagement member 17 of the dust collection case 12 is removably locked to the upper part of the vacuum cleaner body 1. A locking portion 18 is formed.

Furthermore, as shown in FIG. 1, the suction port support part 19 is located on the lower surface of the vacuum cleaner main body 1 in front of the opening 7 of the battery storage part 6.
6 and protrudes integrally.

An electric motor 21 is housed in the vacuum cleaner main body 1 with a fan 20 facing the ventilation part 3, and a rechargeable battery 22 that serves as a power source for the electric motor 21 is placed vertically in the battery storage part 6, and an opening 7 It is inserted and stored.
The battery 22 is formed into a substantially rectangular parallelepiped, and is housed so that the longest side is in the vertical direction and the surface with the smaller cross-sectional area faces the opening 7. Further, a circuit board 23 that forms a charging circuit for the battery 22 is stored in the circuit board storage section 11, and this circuit board 23 is connected to a connection plug 24 that connects to an adapter provided on the vacuum cleaner body 1. . Furthermore, a switch 25 is provided at the front upper part of the vacuum cleaner main body 1, and is located in front of the handle 4 to control the electric motor 21.

In this way, the electric motor 21 and the battery 22 are arranged in series in the vacuum cleaner body 1 from the front side toward the rear side, and the handle 4 is disposed above the electric motor 21 between the fan 20 and the battery 22. is arranged on the rear side of the handle 4.

The suction port body 26 stored in the suction port body storage portion 16 is formed of a pipe having a substantially rectangular cross section and whose proximal end is widened. As shown in the figure, the rear end of the suction port body 26 is fitted and locked to the support portion 19, and the front end is press-fitted into the suction port housing portion 16 between the locking portions 15, 15. suction port body 26
is housed on the lower surface of the vacuum cleaner body with the longitudinal axis direction of the suction port body 26 aligned with the front-rear direction of the vacuum cleaner body 1.

Incidentally, the vacuum cleaner main body 1 is constituted by a two-part case member molded from synthetic resin, and a boss portion 13 is connected with a screw member.

Further, as shown in FIG. 1, the dust collection case 1
2, an opening 28 for mounting a filter device 27 is formed on the rear surface connected to the front surface of the vacuum cleaner main body 1, and a locking portion 15 of the vacuum cleaner main body 1 is formed on the lower left and right sides of the lower part of this opening. , 15 protrudes downward. Furthermore, a movable engager 1 is provided at the upper part of the opening 28 of the dust collection case 12.
7 is rotatably supported on a shaft 29, and a hook portion 30 is formed at the tip of this engaging element 17 to be engaged with the engaging part 18 of the vacuum cleaner main body 1, and the rear end of this engaging element 17 is An elastic piece 31 that contacts the upper wall of the dust collecting case 12 and urges the movable engaging member 17 in the direction of engaging the locking portion 18 is provided in a protruding manner.

Further, as shown in FIG. 1, the upper surface of the dust collection case 12 is inclined downward toward the front, and the front surface is inclined toward the rear. A suction port 32 to which the suction port body 26 is detachably attached is opened in the front surface of the dust collection case 12. This suction port 32 projects inside the dust collection case 12 in a cylindrical shape, and an on-off valve 33 made of rubber or the like that opens and closes the inner end of this suction port 32 is attached to a boss 34 that projects inside the dust collection case 12. It is attached to the push nut 35 etc.

Next, in FIG. 8, reference numeral 36 denotes a brush stand, which is formed in a substantially U-shape with a notch at the top, and this brush stand 36 has brush bristles 37 implanted therein. This brush stand 36 is formed with a protruding shaft 38 that is the center of rotation in the left-right direction opposite to the inner surfaces of both sides, and this shaft 38 is rotatably attached to both sides of the suction port 32 of the dust collection case 12, and the brush stand 36 is The stand 36 is attached so as to surround the suction port 32 except for the upper side, and this brush stand 36 has a notch at the top and the front surface of the suction port 32 is inclined, so that the suction port body can be closed as shown in FIG. 26 can be rotated even when inserted.

Further, as shown in FIG. 1, the filter device 27 includes a bag-shaped dust filter medium 39 and a seal support frame 40.
The seal support frame 40 airtightly holds the opening 28 of the dust collection case 12 and supports the filter medium 39.
is held in the dust collecting case 12 and the dust collecting case 12 is connected to the cleaner main body 1 to airtightly hold and surround the ventilation part 3 of the cleaner main body 1.

Further, as shown in FIG. 1, the vacuum cleaner main body 1
A light emitting diode 41 is provided to indicate when the battery 22 is being charged, and a display window 42 is provided at the top of the cleaner body 1 so that the lighting of the light emitting diode 41 can be confirmed.

Next, the operation of this embodiment will be explained.

When cleaning, the user holds the handle 4 and carries the cleaner body 1. In this state, dust collection case 1
2. The electric motor 21 and the battery 22 are arranged in series and have good balance. When the switch 25 is closed, the electric motor 21 is driven using the battery 22 as a power source, and air is sucked in from the suction port 32 by rotation of the fan 20, and as shown in FIG. 43 to clean it. At this time, when the vacuum cleaner main body 1 is raised as shown in Fig. 3,
The bristles 37 above the shaft 38 of the brush stand 36 are pressed against the surface to be cleaned 43, and during this cleaning, the brush stand 36 has a notch formed on the upper side located on the front side, so that the shaft 38 of the suction port 32 is pressed in the middle. The brush bristles 37 on the lower side of the suction port 32 do not separate from the surface to be cleaned 43, and the bristles 37
7 follows the surface to be cleaned 43, and suction of dust is performed efficiently without damaging the surface to be cleaned, such as the table.

Furthermore, the upper side of the brush stand 36 is formed with a notch to handle large dust such as paper scraps, and both sides and the rear side are sealed and surrounded by brush bristles 37, and the upper part on the front side is separated from the surface to be cleaned 43. 〓 is formed, so dust can be reliably sucked in without being pressed.

When cleaning using the suction port 26, the base of the suction port 26 is inserted into the suction port 32 of the dust collection case 12, as shown in FIG. At this time, the front surface of the dust collection case 12 is tilted and the brush stand 36 is approximately U-shaped, so the suction port body 26 does not come into contact with the brush stand 36.

When storing the vacuum cleaner main body 1, the base end of the suction port body 26 is fitted into the support part 19 on the lower surface of the vacuum cleaner main body 1, and the distal end side is inserted into the locking part 15 that protrudes from the lower surface of the vacuum cleaner main body 1. , 15 to house the suction opening body 26 on the lower surface of the cleaner main body 1. In this way, the suction port body 26
Since the vacuum cleaner main body 1 is stored on the underside of the vacuum cleaner main body 1, the vacuum cleaner main body 1 is not restricted in terms of design, and there is no need to increase the size of the vacuum cleaner main body.

When the vacuum cleaner body 1 is placed vertically with the rear surface facing downward, the heavy battery 22 is located at the bottom, and the vacuum cleaner body 1 is stably held in the vertical position, reducing the mounting area of the vacuum cleaner body 1. The occupied area can be reduced compared to when the cleaner main body 1 is placed horizontally.

Furthermore, when using the vacuum cleaner main body 1 from the stored state, the suction port body 26 is stored and exposed on the bottom surface of the vacuum cleaner main body 1 in the vertical position, so the suction port body 26 can be quickly taken out. .

Furthermore, when replacing the battery 22, the lid 9 is slid to open the opening 7, and the battery 22 is replaced.
The surface of the battery 22 with a smaller cross-sectional area is the opening 7.
Since the opening 7 is opposed to the main body 1, the area of the opening 7 can be reduced, and the strength of the cleaner main body 1 can be increased.

In addition, the vacuum cleaner body 1 has a handle 4 and has a storage part 6 for the battery 22 that is stored vertically on the rear side, so the rear side is naturally higher and an opening 7 is provided at that position to allow battery replacement. This structure increases the strength of the vacuum cleaner body.

Furthermore, since the vacuum cleaner main body 1 has a storage part 6 for the battery 22 that is stored vertically on the rear side, the rear side is naturally high, and the handle 4 formed on the vacuum cleaner main body 1 does not protrude and can be placed vertically. Can be placed vertically.

Further, when charging the battery 22, an AC power source is connected to the connection plug 24 via an adapter to supply DC voltage to the battery 22. When the battery 22 is being charged, the light emitting diode 41 is turned on, and the lighting state can be checked from the display window 42.

Next, the charging circuit of the circuit board 23 will be explained with reference to FIG.

The adapter 44 is a plug 45 that connects to an AC power source.
A transformer 46 is provided with a primary side connected to the plug 45, and a secondary side of the transformer 45 is connected to a connecting pin 47 that is connected to the connecting plug 24 of the cleaner body 1.

In the charging circuit 48, when the battery 22 is uncharged, the battery 22 is charged with DC current from the first SCR 49 via the diode 50. That is, battery 2
2 is uncharged, the first control SCR 49
A voltage detection circuit consisting of a Zener diode 51 and a resistor 52 between
3 is turned off and the battery 22 is charged. At this time, a current flows through the diode 60, the resistor 54, the Zener diode 55, the light emitting diode 41, and the resistor 56, the light emitting diode 41 is lit, and the battery 2
The light emitting diode 41 of No. 2 is lit during charging.

Furthermore, when the charging of the battery 22 is completed, the battery 22
The current flowing to the zener diode 51 decreases, the potential of the zener diode 51 of the voltage detection circuit increases, and the second control SCR 53 whose gate is connected between the zener diode 51 and the resistor 52 is turned on.
When the second SCR 53 is turned on by the resistor 57 connected between the SCR 53 and the resistor 54, the potential divided by the resistors 54 and 57 drops, and the Zener diode 55 and the light emitting diode 4
1. The potential across the resistor 56 also drops, the light emitting diode 41 is turned off, and the first control SCR 49 whose gate is connected between the resistor 57 and the second control SCR 53 via a diode 58 is turned off. The battery 22 is operated, and the charging current to the battery 22 also stops flowing.

Also, remove the adapter 44 from the vacuum cleaner main body 1,
When the switch 25 is closed, a discharge circuit for the battery 22 is formed and the electric motor 21 is driven.

The brush stand 36 rotatably attached to the suction port 32 of the dust collection case 12 is formed into a substantially U-shape with a cutout at the top, so that when sucking in large dust such as paper scraps, the brush bristles 37 are Suction port 3
2, and the upper front part is opened to form a gap between the surface to be cleaned 43 and the dust collection case 12, so that the brush bristles 37 do not press dust. Make sure to aspirate.

In addition, the brush stand 36 is rotatable about a shaft 38 in the left and right direction, so that
When the brush stand 36 is pushed forward from the center of rotation during operation, the bristles 37 on the rear side of the center of rotation are pressed against the surface to be cleaned 43 and an upward force is applied.
The front brush bristles 37 are pressed against the surface to be cleaned 43 by the rotational moment, and the bristles 37 of the brush stand 36 come into contact with the surface to be cleaned 43 at both the front and rear, sufficiently sealing around the suction port and maintaining suction force. At the same time, the suction port 32 does not come into contact with the surface to be cleaned, thereby preventing damage to the surface 43 to be cleaned, such as a table.

〔Effect of the invention〕

According to the present invention, a brush stand having brush bristles is provided around the suction port formed in the front part of the dust collection case, and is rotatable about an axis in the left and right direction, and the brush stand is approximately U-shaped with a notch at the top. When cleaning, hold the handle of the vacuum cleaner and operate it, direct the suction port of the dust collection case downward, bring the bristles of the brush stand closer to the surface to be cleaned, and move it back and forth and left and right. When the brush stand rotates and follows the surface to be cleaned without contacting the outer edge of the suction port,
Suction is efficient and reliable regardless of the shape of the suction port, and it does not damage surfaces to be cleaned such as tables. Also, when sucking in large dust such as paper scraps, the brush bristles are attached to the suction port. Both sides and the lower rear part are enclosed and sealed, and the upper front part is opened to form a gap between the surface to be cleaned and the brush stand, allowing the brush bristles to reliably suction dust without pressing it. Even a small battery-powered vacuum cleaner with limited suction power can easily clean the surface without bringing the suction port into contact with the surface to be cleaned.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view showing the vacuum cleaner in its cleaning state, and Fig. 3 is a partial view showing the rotating state of the brush stand. FIG. 4 is a vertical cross-sectional view showing the state of cleaning using the suction port body, FIG. 5 is a vertical cross-sectional view of the suction port showing the rotating state of the brush stand, and FIG. Figure 7 is a partially cutaway rear view of the vacuum cleaner body, Figure 8 is a front view of a portion of the vacuum cleaner body, and Figure 9 is an electric circuit diagram. be. 1...Vacuum cleaner body, 4...Handle, 12...
Dust collection case, 20...fan, 21...electric motor,
22...Battery, 27...Filter device, 32...
Suction port, 36...Brush stand, 37...Brush bristles, 38...Shaft.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body that includes a built-in electric motor for rotating a fan and a power source battery for the electric motor and has a handle, and a filter that is detachably attached to the front part of the vacuum cleaner body and has a suction port. It consists of a dust collection case housing the device, and a brush stand provided with brush bristles is rotated around an axis in the left and right direction with respect to the suction port surface around a suction port formed in the front part of the dust collection case. A vacuum cleaner that can be freely attached and characterized in that the brush stand is formed in a substantially U-shape with a notch at the top.