JPS635718A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner that uses a battery as a power source and is supported by hand during use, and controls on/off of an electric vacuum cleaner. Concerning a switch mechanism.

(Prior Art) Conventionally, in this type of handheld vacuum cleaner that uses a battery as a power source, for example, as shown in FIGS. 6 to 8, a switch 1 . It is provided on the outside of the cleaner body 3 near the handle 4 for supporting the cleaner body 3 during use. As shown in FIG. 8, these switches 1 and 2 include a slide type switch 2 that maintains either the on or off state depending on the switching position, and the switch 2 shown in FIGS. 6 and 7. There is a bush type switch 1 which is biased in the off direction and turns on only when pressed and held with a finger and returns to the off state when released.

By the way, secondary batteries such as lead-acid batteries are used as batteries that are the power source for electric blowers, but if the secondary battery becomes over-discharged and its internal resistance increases, depending on the configuration of the charging device, In this case, it becomes difficult to charge the secondary battery, and the life of the secondary Ti battery itself is shortened.

However, in the conventional vacuum cleaner with the sliding switch 2 on the right side, the on state is maintained unless the user operates the switch 2 when the switch is on.
There is a risk that it may be left in the on state. If you forget to turn off the switch 2 and leave it in the on state, the battery will be wasted and the battery will become over-discharged.

On the other hand, in the vacuum cleaner having the above-mentioned conventional bushing type switch 1, the switch turns off as soon as the switch 1 is released, so it is not left in the on state, which prevents the battery from over-discharging as described above. It is possible, but switch 1 is in use.
You have to keep pressing , and the operability is sad.

(Problems to be Solved by the Invention) As mentioned above, in conventional handheld vacuum cleaners that use batteries as a power source, there is a risk of forgetting to turn off the switch when using a sliding switch.
There is a risk of over-discharging the secondary battery, and on the other hand, those using a push-button switch have a problem of poor operability because the switch must be kept pressed to maintain the on state.

The present invention aims to solve these problems, and aims to provide a vacuum cleaner that can reliably prevent battery over-discharge and has good operability.

[Structure of the invention]

(Means for Solving the Problems) The vacuum cleaner of the present invention has a vacuum cleaner body which has a dust collection chamber inside and a suction port in front which communicates the dust collection chamber with the outside. An electric blower basin connected to the dust chamber and driven by a battery is disposed, and the vacuum cleaner body is provided with a handle for gripping and supporting the cleaning body during use, -
On the other hand, a mounting surface for placing the vacuum cleaner main body when not in use is placed on the back of the vacuum cleaner main body, and is provided inside the vacuum cleaner main body from the back side to the bottom side and toward the suction port side. A tilted battery storage T is provided, and the battery is stored in the battery storage chamber so as to be movable in the inclined direction, and the battery is brought into contact with the bottom end of the battery storage compartment. A contact portion of a switch is provided to turn on the electric kite blower and turn off the electric blower when the battery is removed, and further, the cross-sectional shape of the vacuum cleaner body has a maximum width portion on the bottom side; It has a substantially triangular shape whose width becomes narrower toward the top, and the center of gravity of the rest is located closer to the top than the maximum width.

(Function) When using the vacuum cleaner of the present invention, hold the handle and support the vacuum cleaner body with its bottom facing downward, and open the suction port at the front of the vacuum cleaner body to remove the However, at this time, the battery storage chamber, which is provided inside the main body from the back side to the bottom side and slanted toward the suction port, is located with the bottom side facing downward, so the battery will not be stored due to its own weight. It is located on the bottom side of the room and comes into contact with the contact part of the switch provided at the end of the bottom side, and the electric ventilation powered by the battery is turned on. - On the other hand, when not in use,
The vacuum cleaner body is placed upright with its back as a mounting surface, but at this time, the back side of the battery compartment is located downward, so the battery moves to the back side in the battery compartment due to its own weight, and the switch contacts The electric blower turns off.

Furthermore, if the vacuum cleaner falls over when not in use, the cross-sectional shape of the vacuum cleaner is almost triangular with the widest part on the bottom side, and the center of gravity is on the upper side than the widest part. By being located on the side, the vacuum cleaner body is supported with its sides down and tilted downward from the bottom side to the top side. Since the back side of the storage chamber is located downward, the off state is maintained.

(Embodiment) Hereinafter, the configuration of an embodiment of the electric vacuum cleaner of the present invention will be described with reference to FIGS. 1 to 5.

Reference numeral 11 denotes a vacuum cleaner body, which is composed of a main body case 12 and a dust collection case 13 detachably attached to the front side (upper side in FIG. 1) of the main body case 12.

The main body case 12 is divided into left and right parts, and consists of a pair of case members connected by screws or the like.

The dust collection case 13 has a dust collection chamber 14 inside. In addition, a suction port 15 is formed at the front bottom of the dust collection case 13 facing the collection chamber 14, and the suction port 15 is inclined downward (to the left in FIG. 1) toward the rear. There is. Further, the rear surface of the dust collection case 13 is opened, and the filter 16 is detachably attached to the dust collection chamber 14 through this rear surface opening. moreover,
At the rear end of the dust collection case 13, a spring 17 is attached to the upper part.
A clamp 18, which is biased in the direction around J1 as shown in the figure, is pivotally mounted, and a locking protrusion 19 is integrally provided vertically at the lower part.

On the other hand, an engagement groove 21 is formed in the upper part of the front end of the main body case 12, and an engagement receiving part 2 is formed in the lower part.
2 are formed, and these engagement grooves 21 and engagement receiving portions 22
In addition, the clamp 18 of the dust collection case 13 and the locking protrusion 1
9 are removably engaged with each other, whereby both the cases 12 and 13 are removably connected.

Further, the dust collection chamber 14 is provided on the front surface of the main body case 12.
A communication port 23 facing the frontage is formed, and this communication port 2
An electric blower 24 is disposed inside the main body case 12 facing the air blower 3 . Furthermore, exhaust ports 25 are formed on both sides of the main body case 12 facing the electric motor 24.

Further, a substantially cylindrical handle 26 whose axis is in the front-rear direction is integrally formed in the upper part of the main body case 12.

Further, on the rear side of the main body case 12, there is provided a substantially rectangular solid-shaped battery, which is inclined in the direction a+, from the back surface 11a side of the vacuum cleaner main body 11 to the bottom surface 1ib side and toward the suction port 15 side, that is, toward the front side. A storage chamber 27 is formed. The inclination direction a and the inclination direction S of the suction port 15 are substantially perpendicular to each other. Note that the lower end of the battery storage chamber 27 opens on the lower surface of the main body case 12, and this lower surface opening is closed by a lid body 29 that is detachably attached to the main body case 12 with screws 28 or the like. Further, cushioning materials 30 and 31 are spread on the upper surface of the battery storage chamber 27, that is, the surface on the back surface 11a side, and the lower surface, that is, on the side of the bottom surface 11b. 1 A battery 3 such as a lead-acid battery is placed in the battery storage chamber 27.
2 are fitted and housed so as to be slidable in the inclined direction a.

Further, the lower end portion of the battery storage chamber 27, that is, the bottom surface 1i
The picture electrode 33a of the battery 32 is located behind the end on the b side.
, 33b are fixed to a pair of discharge contact portions 34a, 34b made of conductive pieces that are brought into contact with and separated from each other, and these discharge contact portions 34a.

Similarly, the electrode 33a is located slightly above the electrode 34b.

A pair of charging contact portions 35a and 35b made of conductive pieces with 33b connected and separated are fixed. Note that these discharging contact portions 34a, 34b and charging contact portion 35a.

35b means that when the battery 32 comes into contact with the lower end of the battery storage chamber 27, its electrodes 33a and 33b come into contact with the discharging contact parts 34a and 34b, and the charging contact part 35
a.

35b and when the battery 32 is in contact with the upper end of the battery storage chamber 27, the electrodes 33a and 33b are I
They are provided at positions away from the Ii power contact parts 34a and 34b and in contact with the charging contact parts 35a and 35b, respectively. And the discharge contact part 34a
, 34b and the electrodes 33a, 33b of the battery 32 constitute a discharging switch 36, and the charging contact portion 3
5a, 35b and electrodes 33a, 33b of the battery 32
constitutes the charging switch 37.

Furthermore, a circuit board 42 on which a charging circuit 41 for charging the battery 32 is mounted is disposed at the rear lower side of the main body case 12 . Further, a jack 44 to which a plug of a charging adapter 43 is detachably connected is arranged inside the handle 26.

Next, the shape of the vacuum cleaner main body 11 will be explained based on FIG. 4. In this figure, (F3) is a schematic side view of the vacuum cleaner main body 11, (F3) is a rear view of the vacuum cleaner 18, and (0) is a top view of the same.

As shown in FIG. 4(B), the back side 1 of the vacuum cleaner body 11
The shape of 1a and the cross-sectional shape whose cut surface is a plane perpendicular to the front-rear direction of the vacuum cleaner main body 11, the width, that is, the lateral length is maximum on the bottom surface Nb side, and,
It has a substantially triangular shape that gradually becomes narrower toward the upper surface 11c, and the bottom surface 11b is curved in an arc shape below the portion having the maximum width of 1 max. The entire center of gravity G of the vacuum cleaner is located closer to the upper surface 11c than the straight line connecting both ends of the portion having the maximum width L max. Note that the back surface 11a of the vacuum cleaner main body 11 is flat,
A perpendicular line drawn from the center of gravity G to the back surface 11a passes through the center of this back surface 11a.

Further, as shown in (d) of FIG. 4, the cross-sectional shape of the vacuum cleaner main body 11 whose cut plane is a plane orthogonal to the vertical direction has a maximum width l maX at the center front side,
Moreover, it has a shape that gradually becomes narrower toward the front and rear. And the center of gravity G is the maximum width 1 ma
It is located further back than the x section.

Next, the configuration of the electric circuit of the electropulverizer of this embodiment will be explained based on FIG. 5.

Both of the discharge contact portions 34a and 34b are connected to both poles of the electric method filfi 24 in a corresponding manner.

Further, inside the charging adapter 43, a transformer 4 is provided.
5 and diodes 46 and 47 are built-in.

Next, the configuration of the charging circuit 41 will be explained.

A first grid resistor 51 and a diode 52 are connected in series between the positive output terminal of the rectifier circuit 48 and the positive charging contact portion 35a connected to the positive voltage terminal 33a of the battery 32. A protection resistor 53 is connected in parallel with the first thyristor 51. Further, the negative side charging contact portion 35b connected to the negative side electric JFi 33b of the 'battery 32 is connected to the negative side output terminal of the rectifier circuit 48.

Further, a diode 54 and a resistor 55, 56 are connected between the positive output terminal and the negative output terminal of the rectifier circuit 48.
and a second thyristor 57 are sequentially connected in series. Further, a smoothing capacitor 58 is connected between the midpoint between the diode 54 and the resistor 55 and the negative output terminal of the rectifier circuit 48 . Furthermore, a diode 5 is connected between the intermediate point between the resistor 56 and the second thyristor 57 and the gate of the first thyristor 51.
9 is connected, and a resistor 60 is connected between the gate and cathode of the first thyristor 51.

Furthermore, a Zener diode 61 and a resistor 62 are connected to the direct current 1 in sequence between the cathode of the first thyristor 51 and the negative output terminal of the rectifier circuit 48 .
The midpoint of the two thyristors is connected to the gate of the second thyristor 57 via a resistor 63.

Further, one capacitor 64 is connected between the gate and cathode of the second thyristor 57.

Furthermore, a Zener diode 65 is connected between the intermediate point of the resistors 55 and 56 and the negative output terminal of the rectifier circuit 48.
, a resistor 6G, and a light emitting diode 67 are successively connected in series.

Next, the operation of this embodiment will be explained.

When in use, as shown in FIG.
Run while facing 1. At this time, since the suction port 15 is inclined from the front end of the vacuum cleaner body 11 toward the bottom surface 11b, in order to make the suction port 15 face parallel to the surface to be cleaned 71, the vacuum cleaner body 11 faces forward. The vacuum cleaner body 11 is held tilted in the downward direction, and the direction of inclination of the suction port 15 corresponds to the running direction of the cleaner body 11. Also, at this time, the battery housing 27 is vertically shaped and its bottom surface 1 is
The 1b side is located below. Therefore, in this first battery storage chamber 27, the battery 32 is placed on the bottom surface 11a side, that is, on the first side.
The electrode 33a moves by gravity in the a1 direction shown in the figure.
, 33b are in contact with the discharging contacts 34a, 34b, that is, the discharging switch 36 is closed, so the output voltage of the battery 32 is applied to the electric blower 24, and the electric blower 24 is turned on.

Then, by driving this electric blower 24, the dust sucked in from the suction port 15 along with the airflow is removed by the filter 16.
The dust is stored in the dust collection chamber 14, and the filter 16
The airflow that has passed through is exhausted from the exhaust port 25.

On the other hand, when not in use, the vacuum cleaner main body 11 is placed upright on a mounting surface 72 with its back surface 11a as a mounting surface, as shown in FIG. At this time, the battery storage chamber 27 is
The a side is located downward and is in a tilted state. therefore,
In this battery storage chamber 27, the battery 32 moves by gravity toward the rear surface 11a side, that is, in the a2 direction shown in FIG.
As it moves away from 34b, the charging contact part 35a,
35b. That is, the discharging switch 36 is opened, the electric blower 24 is turned off, and the charging switch 37 is closed, making it possible to refill the battery.

In addition, when the battery 32 slides, the cushioning material 3 provided on the surface that the battery 32 hits in the battery storage chamber 27 is used.
0.31 weakens the impact.

As described above, since the device is automatically turned on and off depending on whether it is in use or not, operability is improved. Also,
Since the battery 32 is not left in the on state, unnecessary consumption of the battery 32 can be prevented, and deterioration of the battery 32 due to overdischarge can be prevented.

Also, when the vacuum cleaner body 11 is placed upright, it is in a charging state, so if the plug of the charging adapter 43 is connected to the jack 44 in this state, the battery 32 is charged via the charging circuit 41. .

That is, when the voltage of the battery 32 is low, the Zener diode 61 is in a non-conducting state, and therefore the second thyristor 57 is also in a non-conducting state, so that a gate current flows through the gate of the first thyristor 51. , this first thyristor 51 becomes conductive, a charging current flows to the battery 32, and the battery 32 is charged. At this time, the midpoint potential of the resistors 55 and 56 is also sufficiently high, so the Zener diode 65 becomes conductive and the light emitting diode 67 lights up to indicate that charging is in progress.

Then, when the battery 32 is charged and its voltage increases,
As the Zener diode 61 becomes conductive, the second thyristor 57 becomes conductive, and the potential on the gate side of the first thyristor 51 decreases relatively, and the first thyristor 51 becomes non-conductive, and the battery 32 overcharging is prevented. Further, the midpoint potential of the resistors 55 and 56 also decreases relatively, the Zener diode 65 becomes non-conductive, and the light emitting diode 67 turns off, indicating the end of charging.

By the way, in this charging circuit 41, when over-discharging of the battery 32 progresses and its internal resistance increases, smoothing by the condenser 58 is not sufficiently performed, and the pulsating voltage from the rectifying circuit 48 is directly The voltage is applied to the Zener diode 61, the Zener diode 61 becomes conductive, and the charge becomes 1.
- You may not be able to do it in minutes. However, as described above, over-discharging of the battery 32 itself can be reliably prevented, so charging the battery 32 will not be a problem.

In addition, if the vacuum cleaner main body 11 is accidentally tipped over when not in use, its cross-sectional shape is approximately triangular with the maximum width Lll1ax on the bottom surface 1ib side, as shown in the square in FIG. , the bottom surface 11b is curved, and the center of gravity G is located above the maximum width 1 wax, so the vacuum cleaner body 11 stops with its bottom surface 11b facing down. Instead, it is supported with the flat side surface 11d facing down. At this time, the vacuum cleaner main body 11 is tilted in a downward direction from the bottom surface 11b side to the top surface 11c side, so that the back surface 11a side of the battery storage chamber 27 is located lower, and the discharge switch 36
is kept open. That is, even if the vacuum cleaner main body 11 is tipped over, the battery 32 will eventually move in the a2 direction, so it will not be in the on state continuously.

Moreover, as shown in (0) in FIG. 4, the center of gravity G is
is located further to the rear, so when the cleaning body 11 is overturned, the cleaning body 11 also tilts in the direction of descending toward the back surface 11a. Therefore, the battery storage chamber 27
is tilted at a larger angle with respect to the horizontal plane with its back surface 11a side down, so that it can be more reliably held in the off state when it falls over.

Furthermore, since the battery 32, which is built into the vacuum cleaner main body 11 and has a sufficient weight, is used as a heavy object for opening and closing both switches 36 and 37, the battery 32 does not become unnecessarily large after one stay, and the structure is also improved. Don't make it complicated.

〔Effect of the invention〕

According to the present invention, when in use, when holding a vacuum cleaner body having a suction port at the front, the battery moves to the bottom side in the battery storage chamber provided at an angle inside the vacuum cleaner body, and comes into contact with the contact part of the switch. When the electric blower is turned on and not in use, if the back of the vacuum cleaner is placed as a mounting surface, the battery will move to the back side in the battery compartment, away from the switch contact, and the electric blower will be removed. Since the switch is turned off, in other words, 9 cycles of on and off are automatically performed when in use and when not in use, improving operability and eliminating the need to leave the battery in the on state. Over-discharge can be reliably prevented, and the cross-sectional shape of the cleaning unit is approximately triangular with the widest part on the bottom side, and the center of gravity is located on the top side rather than the widest part, so it is easy to clean when not in use. Even if the main body is accidentally tipped over, the cleaning spatula main body is supported with the back side of the battery storage chamber located further down, and the off state is reliably maintained.

[Brief explanation of the drawing]

FIG. 1 is a top view showing an embodiment of the vacuum cleaner of the present invention;
Fig. 2 is an explanatory side view showing the state when the above vacuum cleaner is in use, Fig. 3 is an explanatory side view showing the state when the above vacuum cleaner is not in use, Fig. 4 is an explanatory view showing the shape of the vacuum cleaner body as above, and Fig. 5 is an explanatory side view showing the state when the above vacuum cleaner is not in use. The same circuit diagram as above, Fig. 6 is a side view showing an example of a conventional vacuum cleaner, Fig. 7 is a perspective view of the vicinity of the same switch as above, and Fig. 8 is a perspective view of the vicinity of the switch showing another example of the conventional vacuum cleaner. It is a diagram. 11... Vacuum cleaner body, 11a... Its back, 11b...
・The bottom surface, 11c...The top surface, 14...Dust collection sky,
15...Suction port, 24...Electric dumpling machine, 26...Handle, 271-%i pond storage chamber, 32...Battery, 34a,
34b...Contact part, 36...Switch. June 25, 1986

Claims (1)

[Claims] (1) A vacuum cleaner body that has a built-in electric blower and a dust collection chamber that communicates with the electric blower, and a suction port that communicates the dust chamber with the outside at the front; A battery is housed therein to drive the electric blower, and the vacuum cleaner body is provided with a handle for supporting the vacuum cleaner body which is held when in use, and the back surface of the vacuum cleaner body serves as a mounting surface when not in use. , a battery storage chamber is provided in the vacuum cleaner main body so as to be inclined in a direction from the back side of the vacuum cleaner main body to the bottom side and toward the suction port side, and the battery storage chamber is slidable in the direction of the inclination. A contact portion of a switch is provided for storing the battery and for turning on the electric blower when the battery comes into contact with the bottom end of the battery storage chamber and turning off the electric blower when the battery is separated. , the cross-sectional shape of the vacuum cleaner body is approximately triangular in shape, with the widest portion on the bottom side and the width gradually narrowing toward the top side;
A vacuum cleaner characterized in that the center of gravity is located on the upper side of the maximum width portion.