JPH0373284B2 - - 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 a portable vacuum cleaner that uses a battery as a power source.

(Prior art) Conventional vacuum cleaners of this type are, for example,
As described in the back of No. 54-70652, the electric motor that rotates the fan and the battery that drives this electric motor are arranged and stored in the main body of the vacuum cleaner, and
The battery is stored with the longitudinal direction facing forward and backward, and a handle is provided above the battery stored in the rear of the vacuum cleaner body, and a dust collection case is detachably attached to the front of the vacuum cleaner body. When installing or replacing the battery, a structure has been adopted in which a cover plate provided at the rear of the vacuum cleaner body is opened and the battery is inserted and removed through an opening at the rear.

(Problems to be Solved by the Invention) In a vacuum cleaner with this conventional structure, a motor and batteries are arranged in the front and back, the batteries are housed with the longitudinal direction facing forward, and a dust collection case is attached to the front. Because of this, the front side is heavy and unbalanced when you carry it by holding the handle, and if you place the vacuum cleaner vertically on the back rest in order to reduce the floor space it occupies when not in use, the battery will be placed in the longitudinal direction. Since the vertical direction is vertical, the center of gravity is located upward, resulting in poor stability.Furthermore, since the longitudinal direction of the battery is the front-back direction, the main body of the vacuum cleaner becomes large.

On the other hand, rechargeable batteries, for example, have a limited number of charge cycles.
The battery reaches the end of its lifespan after about 200 uses, and the battery needs to be replaced, so an opening must be formed in the vacuum cleaner body to allow the battery to be replaced. However, if an opening for battery replacement is formed on the back of a conventional vacuum cleaner, the battery is placed vertically, which increases the opening area and weakens the vacuum cleaner itself. In particular, small vacuum cleaners have the problem of being easily broken if dropped on the floor.

The present invention was developed in view of the above-mentioned problems.It is compact, has good balance when being carried, and can be placed vertically with the rear side as the bottom when not in use, reducing the occupied floor space and providing good stability. , to provide a vacuum cleaner with increased strength of the vacuum cleaner body.

[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 fan, a motor that rotates the fan with a smaller diameter than the fan, and a power source battery for the motor, and has a handle; It consists of a dust collection case that is detachably attached to the front part of the vacuum cleaner body and has a suction port and houses a filter device, and the dust collection case and the electric motor and battery built into the vacuum cleaner body are connected in series. and the vacuum cleaner body has a handle recessed in an outer wall above the electric motor between the fan and the battery to form a recessed part, and the handle is disposed opposite to the recessed part. , and the rear surface is formed as a vertical part, and the battery is a rectangular parallelepiped, and is vertically arranged behind the handle of the vacuum cleaner main body, and the battery is opened and closed by a lid on the bottom surface of the vacuum cleaner main body. It has an opening for inserting and removing it.

(Function) The vacuum cleaner of the present invention is operated by grasping the handle of the vacuum cleaner body when cleaning, and is placed vertically on the mounting portion on the rear surface of the vacuum cleaner body when not in use. When carried, the dust collection case, electric motor, and battery are arranged in series for good weight balance, and when placed vertically, the heavier battery is located at the bottom almost parallel to the mounting surface, providing stability. In addition, an electric motor with a smaller diameter than the fan is disposed between the large-diameter fan and the battery, and a recessed part is formed by recessing the outer wall of the vacuum cleaner body on the upper part of the electric motor. Since the handles are arranged facing each other, the vacuum cleaner main body can be made smaller. Further, when replacing the battery, the battery is inserted and removed through an opening on the bottom surface of the vacuum cleaner main body, which is opened opposite to the surface with a small cross-sectional area of the battery. Further, the opening area of the opening for battery replacement in the vacuum cleaner main body is small, and the strength of the vacuum cleaner main body can be increased.

(Example) The configuration of an example of the present invention will be described with reference to the drawings.

1 is the vacuum cleaner body, as shown in Figure 1.
The rear surface is formed with a planar mounting part that can be placed vertically as a bottom surface, and as shown in FIG. As shown in FIG. 1, a handle 4 is integrally formed opposite the recessed portion 1a. A second battery storage section 6 is provided on the rear side of the vacuum cleaner body 1 from the rear side of the handle 4 to the lower part.
As shown in the figure, it is formed vertically, and an opening 7 is formed in the lower part of this battery storage part 6, and engagement grooves 8 are formed in the front-rear direction on both sides of this opening 7. 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. 6, the vacuum cleaner main body 1
At the front lower part of the dust collecting case 12, locking parts 15 and 16 which are open on the upper surface and which releasably lock the engaging part 14 that integrally projects downward at the rear lower end of the dust collection case 12 are formed on the left and right sides, The central space of the locking portions 15, 15 is formed into a suction port storage portion 16, and the movable engager 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. Further, as shown in FIG. 1, the suction port support portion 19 is integrally formed on the lower surface of the vacuum cleaner main body 1 and is located in front of the opening 7 of the battery storage portion 6, facing the storage portion 16. It is installed protrudingly.

The fan 20 is placed in the vacuum cleaner body 1 so as to face the ventilation part 3, and the motor 21, which has a smaller diameter than the fan 20, is housed in the motor storage part 10, so that the fan 20 faces the recessed part 1a above the motor 21. The handle 4 is provided. And battery storage part 6
A rechargeable battery 22 serves as a power source for the electric motor 21.
is inserted and stored from the opening 7 in a vertical position. This battery 22 is formed into a substantially rectangular parallelepiped, with the longest side being the vertical direction, and the side with the smaller cross-sectional area being the opening 7.
It is housed so that it is facing the 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 from the front side to the rear side of the vacuum cleaner main body 1.
The handle 4 is disposed in the upper concave portion of the electric motor 21, and the battery 22 is disposed behind the handle 4.

In addition, 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 widened at the base end, and the suction end surface at the tip is inclined downward. As shown in FIG. 1, the rear end of this suction port body 26 is
The front end is press-fitted into the suction port housing portion 16 between the locking portions 15, 15, and the longitudinal length of the suction port 26 is attached to the bottom surface of the vacuum cleaner body. The vacuum cleaner body 1 is stored with its axial direction aligned with the front-back direction of the cleaner body 1.

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

Further, as shown in FIG. 1, the dust collection case 12 has an opening 28 formed in the rear surface connected to the front surface of the vacuum cleaner main body 1, into which a filter device 27 is attached, and a lower part of this opening. On the left and right sides, engaging portions 14 that are engaged with the locking portions 15, 15 of the cleaner body 1 protrude downward. Further, a movable engager 17 is provided at the upper part of the opening 28 of the dust collection case 12.
is rotatably supported on a shaft 29, and this engager 1
A hook portion 30 that locks into the locking portion 18 of the vacuum cleaner main body 1 is formed at the tip of the movable locking device 17 , and a hook portion 30 that connects to the locking portion 18 of the vacuum cleaner body 1 is formed at the rear end of the locking device 17 . An elastic piece 31 is provided in a protruding manner to urge the member in the direction of engagement with the locking portion 18 .

Further, as shown in FIG. 1, the dust collecting case 12 has an upper surface inclined downward toward the front side, and a front surface inclined toward the rear side. 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 inside end of this suction port 32 is attached to a boss 34 that projects inside the dust collection case 12. Pushnuts 3
It is attached with 5 etc.

Next, in FIG. 8, reference numeral 36 denotes a brush stand, which is formed in a substantially U-shape with a cutout at the top.
6 has brush bristles 37 implanted therein. and,
This brush stand 36 has a shaft portion 38 facing the inner surfaces on both sides.
is formed protrudingly, and this shaft portion 38 is connected to the dust collection case 12.
The brush stand 36 is rotatably attached to both sides of the suction port 32, and the brush stand 36 is attached so as to surround the suction port 32 except for the upper side. Therefore, it can be rotated even when the suction port body 26 is inserted, as shown in FIG.

The filter device 27 includes a bag-shaped dust filter medium 39.
and a seal support frame 40, and this seal support frame 40 is connected to the dust collection case 12 as shown in FIG.
The filter medium 39 is held in the dust collection case 12 by keeping the opening 28 of the vacuum cleaner airtight, and the ventilation part 3 of the vacuum cleaner main body 1 is held airtight with the dust collection case 12 being connected to the vacuum cleaner main body 1. It has become surrounded.

Further, as shown in FIG. 1, the vacuum cleaner main body 1
is provided with a light emitting diode 41 that indicates when the battery 22 is being charged, and this light emitting diode 41
A display window 42 is provided in the upper part of the vacuum cleaner body 1 so that the lighting of the display window 42 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 a handle is placed in the upper recessed part of the electric motor 21, so that it can be carried with good balance. Then, when the switch 25 is closed, the electric motor 21 is driven using the battery 22 as a power source, and the rotation of the fan 20 causes the suction port 3 to
As shown in FIG. 2, the brush bristle 37 of the brush stand 36 is caused to slide on the surface to be cleaned 43 for cleaning. At this time, as shown in FIG. 5, when the vacuum cleaner body 1 is raised with the front side facing downward,
The brush bristle 37 on the front side of the shaft part 38 of No. 6 is pressed against the surface to be cleaned 43, and since the front side of the brush stand 36 is formed with a notch, it is rotated around the shaft part 38, and the brush bristle 37 on the rear side is pressed against the surface 43 to be cleaned. The brush bristles 37 do not separate from the surface 43 to be cleaned, the brush bristles 37 follow the surface 43 to be cleaned, and the dust is efficiently sucked without damaging the surface to be cleaned such as a table.

Furthermore, the front side of the brush stand 36 is notched to remove large dust such as paper scraps, and both sides and the rear side are sealed with brush bristles 37, and a gap is formed between the front side and the surface to be cleaned 43. Therefore, 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 inclined 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 main body 1 is placed vertically with the rear surface as the bottom surface, the heavy battery 22 is located at the bottom, and the vacuum cleaner main body 1 is stably held in the vertical position, so that the mounting area of the vacuum cleaner main body 1 is The occupied area can be reduced compared to when the machine 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, since the vacuum cleaner body 1 has a handle 4 and a storage part 6 for the vertical battery 22 is formed on the rear side, the rear side is naturally raised, and an opening 7 for battery replacement is formed at that position. , the strength of the vacuum cleaner body can be increased.

Furthermore, the vacuum cleaner main body 1 has a vertical battery 22 on the rear side.
Since the storage part 6 is formed, the rear side is naturally high, the handle 4 formed on the vacuum cleaner main body 1 does not protrude, and the cleaner 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, the primary side of which is connected to this plug 45, and the secondary side of this 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, the battery 22
is uncharged, a voltage detection circuit consisting of a Zener diode 51 and a resistor 52 between the first control SCR 49 and the ground causes the second control SCR 53 to be activated.
is turned off and the battery 22 is charged. and,
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 via the diode 58 between the resistor 57 and the second control SCR 53 is turned off. As a result, 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.

In addition, by forming the opening 7 for inserting and removing the battery 22 on the bottom surface of the vacuum cleaner main body 1, the design is good, there are fewer restrictions on the shape of the top surface of the vacuum cleaner main body 1, etc., and further, Since the handle 4 is provided at the top and the battery 22 is placed vertically, the cleaner body 1 has a triangular shape that slopes downward toward the front, and the opening 7 is formed at the widest area of the cleaner body 1. Therefore, the strength of the vacuum cleaner main body 1 can be increased.

〔Effect of the invention〕

According to the present invention, the vacuum cleaner main body has a mounting portion formed on the rear surface so that it can be placed vertically, and a substantially rectangular parallelepiped battery is arranged vertically on the rear side of the vacuum cleaner main body, and the surface of the battery with a small cross-sectional area An opening that can be opened and closed by a lid is formed on the lower surface of the vacuum cleaner body facing the vacuum cleaner body, and the dust collection case and the electric motor and battery built into the vacuum cleaner body are arranged in series. The handle is placed opposite the recessed part of the vacuum cleaner body above the electric motor, which has a smaller diameter than the fan, so the length and height dimensions of the vacuum cleaner body can be shortened, making it more compact and easier to clean. At times, the handle of the vacuum cleaner can be grasped and operated, and when not in use, it can be placed vertically on the holder on the back of the vacuum cleaner.When carried, the dust collection case, electric motor, and battery are arranged in series, allowing the electric motor to operate easily. By grasping the upper handle, the weight is well balanced, and when carried, the whole body is horizontal, making it easy to hold when grasping the handle, and when placed vertically, the heavy battery is located at the bottom.
The approximately rectangular parallelepiped battery is approximately parallel to the mounting surface of the vacuum cleaner main body, and the area of the mounting surface on the back of the vacuum cleaner main body is expanded, providing good stability. The height of the vacuum cleaner is lower, making it less likely to fall over, and the area of the opening for replacing the battery is reduced, making the vacuum cleaner itself stronger, especially if it is dropped, even if it is placed on a small table. The vacuum cleaner does not get damaged, therefore, it has good balance when carried, and when not in use, it can be placed vertically with the rear surface as the bottom surface to reduce the occupied floor space and has good stability.

[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 rear view with a part of the main body of the vacuum cleaner cut away, and Fig. 3 is a longitudinal cross-section showing the state during cleaning. Figure 4 is a vertical cross-sectional view showing the state in which the suction port body is used, Figure 5 is a vertical cross-sectional view of a part of the vacuum cleaner in the cleaning state, Figure 6 is a front view of a part of the vacuum cleaner body; FIG. 7 is a longitudinal sectional view of the suction port of the dust collection case, FIG. 8 is a bottom view of the brush stand, and FIG. 9 is an electric circuit diagram. DESCRIPTION OF SYMBOLS 1... Vacuum cleaner body, 1a... Recessed part, 4... Handle, 7... Opening, 9... Lid body, 12... Dust collection case, 20... Fan, 21... Electric motor, 2
2...Battery, 27...Filter device, 32...Suction port.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body that includes a fan, a motor that rotates the fan with a diameter smaller than that of the fan, and a power supply battery for the motor and has a handle; a dust collection case that is attached and has a suction port and houses a filter device; the dust collection case and the electric motor and battery built into the vacuum cleaner body are arranged in series; the vacuum cleaner body has a handle; An upper outer wall of the electric motor between the fan and the battery is recessed to form a recessed part, a handle is disposed opposite to the recessed part, and a rear surface is formed as a vertical part. The battery has a substantially rectangular parallelepiped shape and is vertically arranged behind the handle of the vacuum cleaner body, and an opening is formed on the lower surface of the vacuum cleaner body with a lid to insert and remove the battery. A vacuum cleaner featuring