JP2003219991A - Electric cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric cleaner which can be improved in suction ability and can make the cleaning time long. <P>SOLUTION: An auxiliary battery 41 is accommodated in a battery accommodation chamber of a cleaner main body in which the initial battery 35 has been accommodated. The auxiliary battery 41 is connected to the initial battery 35 in series. The battery voltage by the initial battery 35 and the auxiliary battery 41 becomes high in addition, and the driving voltage of an electric blower 5 becomes high. The suction ability of the electric blower 5 can be improved without exchanging the initial battery 35. The auxiliary battery 41 is accommodated in the battery accommodation chamber, and the auxiliary battery 41 is connected to the initial battery 35 in parallel. The battery capacity by the initial battery 41 and the auxiliary battery 35 becomes large additionally, and the drive capacity of the electric blower 5 becomes large. The cleaning time by the electric blower 5 can be prolonged without exchanging the initial battery 35. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electric vacuum cleaner in which an electric blower is driven by a battery.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner of this type has a cleaner body having an electric blower housed therein, and a battery for driving the electric blower is housed inside the cleaner body. There is.

[0003]

However, in the above-mentioned electric vacuum cleaner, when batteries having the same capacity are used to increase the battery voltage to increase the suction capacity of the electric blower, the electric blower drives the electric blower. Cleaning time will be shortened. On the other hand, if you want to lengthen the cleaning time, you can increase the capacity of the battery, but by increasing the capacity of this battery, the weight of this battery itself will increase,
There is a problem that the operability of the cleaner body may be deteriorated.

For this reason, the cleaning time by the drive of the electric blower is usually set by the suction ability that meets the needs of general users. However, even if the weight is increased, the suction time may be increased by some users. There are cases where it is requested that the ability be improved and the cleaning time be extended.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric vacuum cleaner capable of improving the suction ability and extending the cleaning time.

[0006]

The electric vacuum cleaner of the present invention comprises:
It is provided with a first battery for driving the electric blower, and a battery accommodating portion capable of accommodating a second battery, which is separate from the first battery, connected in series to the first battery. . By accommodating the second battery in the battery accommodating portion of the cleaner body, the second battery is connected in series to the first battery, and the battery voltage for driving the electric blower becomes high. The suction capacity by driving this electric blower is improved.

Further, the vacuum cleaner of the present invention comprises a battery accommodating portion capable of accommodating a second battery separate from the first battery in parallel with the first battery. . Then, by accommodating the second battery in the battery accommodating portion, the second battery is connected in parallel with the first battery, and the battery capacity for driving the electric blower becomes large. It becomes possible to prolong the cleaning time by driving.

Further, the electric vacuum cleaner of the present invention includes a battery accommodating portion which can accommodate a second battery separate from the first battery in a state of being connected to the first battery, and a first battery. A switching means for switching the connection of the second battery to either parallel or series is provided. Then, the connection of the second battery accommodated in the battery accommodating portion to the first battery is switched by the switching means to either parallel or series, thereby improving the suction capacity by driving the electric blower and a long cleaning time. Since it is possible to use either of them, the usability is further improved.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A first vacuum cleaner according to the present invention will be described below.
An embodiment will be described with reference to FIGS. 1 to 6.

1 to 6, reference numeral 1 is a cleaner body, and this cleaner body 1 is a cyclone type electric vacuum cleaner for rotating suction air to centrifuge dust from the suction air. It can run on the floor as a cleaning surface. Further, the cleaner body 1 has a body case 4 having a case body 2 and a lid body 3 which is attached to the upper portion of the case body 2 so as to cover the upper portion so that the upper portion can be opened by rotation. is doing. Furthermore, on the rear side in the case body 2,
The electric blower 5 is housed. As shown in FIGS. 1 and 3, the electric blower 5 includes a pair of connection terminals 5a and 5a.
b has been derived.

A pair of side plate portions 6 are arranged on both sides of the case body 2 so as to project upward.
The pair of side plate portions 6 are curved inward so that the front facing distance in the substantially middle portion in the vertical direction is gradually narrowed. In addition, a plurality of exhaust ports 7 communicating with the electric blower 5 and opening substantially to the side of the front side are formed in the curved front portion of each of the pair of side plate portions 6.
Further, a handle 8 as a handle means is provided on the upper surface of the lid 3 of the body case 4. This handle 8
Is formed in a substantially Y shape in a plan view.

Further, traveling wheels 11 as wheels located on the lower rear side of the case body 2 are rotatably supported on the inner side surfaces of the pair of side plate portions 6, respectively. A swivel wheel 12, which is a wheel that can swivel along the surface direction of the bottom surface portion and that can rotate in a direction orthogonal to the swivel direction, is provided at the front center of the bottom surface portion of the case body 2. There is. Therefore, each of the traveling wheel 11 and the turning wheel 12 enables the cleaner body 1 to travel on the floor surface.

Further, on the front side of the lid body 3 of the main body case 4, a main body suction opening 13 which is open toward the front is provided. Then, on the base end side of the main body suction port 13, a substantially bottomed cylindrical dust cup 14 as a bottomed cylindrical dust collecting device detachably attached to the front side in the case body 2 of the main body case 4. The suction side of is communicating airtightly. And
The exhaust side of the dust cup 14 is airtightly connected to the suction side of the electric blower. Further, a handle portion 15 as a handle portion is integrally provided on the outer side surface of the dust cup 14.

Further, in the main body suction port 13 of the main body 1 of the vacuum cleaner,
The base end of the flexible hose body 21 is communicated and detachably connected. At the tip of the hose body 21, there is provided a hand operation section 22 as an operation means which is bent in a substantially V shape. A plurality of setting buttons 23 for setting an operation mode of the electric blower 5 and the like are provided in a row in a row in parallel in a portion of the hand operation section 22 that faces the proximal end side of the bent portion. Where these multiple setting buttons
Of the 23, the drive button 23a for turning on / off the drive of the electric blower 5 is electrically connected to the intermediate portion of one connection terminal 5a of the electric blower 5. Further, at the tip of the hand operation part 22 of the hose body 21, an extension pipe 24 as an expandable and contractible connection pipe is provided.
A floor brush 25 as a suction port body, which is a nozzle body, is detachably connected to and connected via the.

On the other hand, as shown in FIGS. 2, 4 and 5, the bottom surface of the case body 2 of the main body case 4, which is the front side of the electric blower 5, has a longitudinal direction along the width direction of the case body 2. Battery opening as an elongated rectangular opening having a
31 is formed. The battery accommodation port 31 is an opening for attaching and detaching the battery, and the amount of the battery mounted can be variably set. In addition, a battery cover 32 as a flat plate-shaped lid is detachably attached to the battery housing port 31 with a screw body 33 to close the battery housing port 31.

Further, inside the main body case 4, which is the inside of the battery accommodation port 31, a battery accommodation chamber 34 having a narrow rectangular tubular cross section as a battery accommodation portion communicating with the battery accommodation port 31 is defined. There is. The battery accommodating chamber 34 is provided at a central portion in the width direction of the case body 2 and at a position that does not change the balance of the center of gravity in the width direction of the case body 2, the left-right direction, the front-back direction, and the height direction. Has been.

In the battery accommodating chamber 34, a secondary battery pack which is a battery as a first power source, that is, a rechargeable initial battery 35 having a concave and horizontal cross-section having a height direction in the vertical direction is vertically arranged. It is inserted along and is detachably accommodated. The initial battery 35 supplies electric power to the electric blower 5 to drive the electric blower 5. The initial battery 35 has been stored in the battery storage chamber 34 before the shipment of the vacuum cleaner.
Pre-stored inside.

Further, the initial battery 35 has a connector portion 36 as a terminal portion for discharging the battery power of the initial battery 35 to the outside and charging the initial battery 35.
Is provided. As shown in FIGS. 2 and 4, the connector portion 36 is housed in the battery housing chamber 34 together with the initial battery 35. Further, the connector portion 36 includes a pair of lead wires 36a and 36b.
A pair of connection terminals 35a and 35b are attached to the tips of a and 36b. The one connection terminal 35a is connected to the one connection terminal 5a of the electric blower 5 as shown in FIGS.
, And the other connection terminal 35b is electrically connected to the other connection terminal 5b of the electric blower 5.

Further, in the central portion of one side surface in the width direction of the initial battery 35, a concave groove portion having a concave groove shape in cross section along the vertical direction is formed.
37 are provided. Further, the initial battery 35 is accommodated in the battery accommodating chamber 34 in a state where the outer surfaces in the three directions of the initial battery 35 other than the position where the concave groove portion 37 is located are brought into contact with the inner side surface of the battery accommodating chamber 34. ing. Therefore, this initial battery 35
Does not change the weight balance in the left-right direction of the cleaner body 1 before and after the state of being housed in the battery housing chamber 34 and the state of not being housed in the battery housing chamber 34. That is, the initial battery 35 has the same weight balance of the cleaner body 1 regardless of whether or not the initial battery 35 is housed in the battery housing chamber 34. Further, in the battery accommodating chamber 34 accommodating the initial battery 35, an auxiliary battery accommodating chamber 38 is formed between the concave groove portion 37 of the initial battery 35 and one inner side surface in the width direction of the battery accommodating chamber 34. To be done.

Then, in the auxiliary battery accommodating chamber 38, a second
A secondary battery pack, which is a battery as a power source of the battery, that is, a rechargeable elongated auxiliary battery 41 having a height direction in the vertical direction is detachably accommodated. This auxiliary battery
Reference numeral 41 denotes an additional battery for increasing the amount of the battery mounted on the cleaner body 1 at the time of shipment. In addition, this auxiliary battery 41
Are connected in series to the initial battery 35 to increase the battery voltage of the initial battery 35 and improve the suction capacity of the electric blower 5. Further, the auxiliary battery 41 does not change the weight balance in the left-right direction of the cleaner body 1 when housed in the auxiliary battery housing chamber 38.

Further, the auxiliary battery 41 has a connector portion 42 as a terminal portion for discharging the battery power of the auxiliary battery 41 to the outside and charging the auxiliary battery 41.
Is provided. The connector portion 42 is housed in the auxiliary battery housing chamber 38 together with the auxiliary battery 41. Further, this connector portion 42 is provided with a pair of lead wires 42a, 42b for leading the battery voltage of the auxiliary battery 41 to the outside, and the respective tip ends of these lead wires 42a, 42b have a connector body 4 having a convex cross section.
A pair of connection terminals 4 led out to the tip side of the flat plate-shaped base portion 4 of 3.
Each of 1a and 41b is electrically connected. further,
Between the pair of connection terminals 41a, 41b on the tip side of the base portion 44 of the connector body 43, an elongated flat plate-shaped projecting piece 45 is vertically projected.

On the other hand, inside the main body case 4 between the other connection terminal 5b of the electric blower 5 and the drive button 23a of the manual operation section 22, a closed circuit composed of the electric blower 5 and the initial battery 35 is formed. Open / close switch 47 for opening and closing 46
Are electrically connected. Furthermore, this open / close switch
Between the drive button 23a on both sides of the 47 and the other connection terminal 5b of the electric blower 5, a pair of connection terminals 41a, 41b of the connector portion 42 of the auxiliary battery 41 are electrically connected to either one. The connecting terminals 48a and 48b are electrically connected to each other.

Here, the pair of connecting terminals of the connector portion 42 of the auxiliary battery 41 are respectively connected to the pair of connecting terminals 48a and 48b.
In order to connect each of the 41a and 41b, as shown in FIG. 1, one end of the opening / closing switch 47 is pushed by the protruding piece 45 of the connector portion 42 of the auxiliary battery 41 to push the switch portion 47a. It must be after closing the open / close switch 47 to release the electrical connection between the electric blower 5 and the initial battery 35. Further, after closing the opening / closing switch 47, by electrically connecting the pair of connection terminals 41a, 41b of the auxiliary battery 41 to the pair of connecting terminals 48a, 48b, respectively, the auxiliary battery 41 The initial battery 35 and the electric blower 5 are connected in series.

Next, the cleaning operation of the first embodiment will be described.

First, in the state where only the initial battery 35 is installed in the battery accommodating chamber 34 of the cleaner body 1, the base end of the hose body 21 is connected to the body suction port 13 of the cleaner body 1,
An extension pipe 24 in which a floor brush 25 is fitted, a gap nozzle (not shown), and the like are connected to the tip of the manual operation unit 22 of 21.

Thereafter, with the hand operating portion 22 of the hose body 21 being held, the drive button 23a of the hand operating portion 22 is turned on, and the battery voltage from at least the initial battery 35 of the initial battery 35 and the auxiliary battery 41 is turned on. Is applied to the electric blower 5 to drive the electric blower 5.

Then, air is sucked together with dust from the floor brush 25 or the gap nozzle.

At this time, the dust-containing air becomes suction air, which sequentially passes through the inside of each of the extension pipe 24 and the hose body 21 and is sucked into the main body suction port 13 of the cleaner main body 1.
The dust is sucked into the dust cup 14 in the cleaner body 1.

The suction air sucked into the dust cup 14 rotates spirally in the dust cup 14, and the dust sucked together with the suction wind is dust cup.
After being captured by centrifugation in 14
Is sucked into the electric blower 5 to become exhaust air, and this exhaust air is exhausted from the exhaust port 7 of the cleaner body 1 to the outside.

Here, when the suction capacity of the electric blower 5 due to the battery voltage from the initial battery 35 in the cleaner body 1 is not sufficient, each of the battery covers 32 fixed to the case body 2 of the cleaner body 1 is fixed. After removing the screw body 33, the battery cover 32 is removed from the battery accommodating port 31 of the case body 2.

Thereafter, the battery accommodating chamber in the battery accommodating port 31
While the auxiliary battery 41 is housed in the auxiliary battery housing chamber 38 formed by the groove 37 of the initial battery 35 housed in 34,
After bringing the projecting piece 45 of the connector portion 42 of the auxiliary battery 41 into contact with the opening / closing switch 47 and closing the opening / closing switch 47 to release the electrical connection between the electric blower 5 and the initial battery 35, A pair of connection terminals 41a, 41 of the connector portion 42 of the auxiliary battery 41
Each of b is electrically connected to each of the pair of connecting terminals 48a, 48b.

Then, the auxiliary battery 41 is electrically connected in series between the initial battery 35 and the electric blower 5, and the battery voltage for driving the electric blower 5 becomes high. When the electric blower 5 is driven by the battery voltage obtained by simply adding the battery voltages of the auxiliary batteries 41, the suction capacity of the electric blower 5 is improved.

As described above, according to the first embodiment, since the initial battery 35 for driving the electric blower 5 is relatively expensive, the initial battery 35 preliminarily mounted at the time of shipment of the cleaner body 1 is shipped. The price of an electric vacuum cleaner equipped with the vacuum cleaner body 1 is almost determined by the amount of mounted. In addition, the loading amount of the initial battery 35 is set so as to meet the needs of the general consumer, such as the actual usage such as the suction capacity and the driving time, or the product price.

However, some customers may be dissatisfied with the suction ability of the cleaner body 1 after purchase and desire to improve the suction ability of the cleaner body 1.

Therefore, a customer who wants to improve the suction ability of the cleaner body 1 is asked to purchase the auxiliary battery 41 separately, and the auxiliary battery 41 is inserted into the battery storage port 31 of the cleaner body 1.
The auxiliary battery 41 is housed in the auxiliary battery housing chamber 38, and the auxiliary battery 41 is connected in series to the initial battery 35, so that the electric blower 5 is driven by the battery voltage obtained by adding the battery voltages of the initial battery 35 and the auxiliary battery 41. Can be driven.

Therefore, by accommodating the auxiliary battery 41 in the battery accommodating port 31 of the cleaner body 1, the battery voltage for driving the electric blower 5 is additionally increased. Therefore, the cleaner equipped with the electric blower 5 is increased. The suction capacity of the main body 1 can be varied and improved.

Here, the initial battery 35 housed in the cleaner body 1 may be replaced with a new battery having a battery voltage higher than that of the initial battery 35, but it is generally rechargeable. Since the battery is relatively expensive, this battery having a high battery voltage is more expensive than the auxiliary battery 41. Therefore, without replacing the initial battery 35, this initial battery 35
Since the auxiliary battery 41 is connected in series to the vacuum cleaner body 1 to improve the suction ability of the cleaner body 1, the suction ability of the cleaner body 1 can be improved at a lower cost.

On the other hand, after purchasing the electric vacuum cleaner, the customer who does not need to improve the suction ability of the cleaner main body 1 of the electric vacuum cleaner by using the electric vacuum cleaner, can use the auxiliary battery.
Since it is not necessary to purchase the 41 separately, it is possible to reduce the financial burden on such a customer.

The initial battery 35 and the auxiliary battery 41 are also included.
Is heavier than the main body 1 of the vacuum cleaner, the auxiliary battery 41 is inserted into the auxiliary battery housing chamber 38 of the battery housing 31 of the cleaner main body 1.
The weight of the cleaner body 1 itself is
The weight of the cleaner main body 1 before accommodating the auxiliary battery 41 may be increased by about 10 to 30%.

For this reason, a concave groove portion 37 is provided in the center of one side surface in the width direction of the initial battery 35, and the outer surface in three directions of the initial battery 35 other than the concave groove portion 37 is located inside the battery accommodating chamber 34. Auxiliary battery housing formed between the concave groove portion 37 of the initial battery 35 housed in the battery housing chamber 34 and one inner side surface in the width direction of the battery housing chamber 34 in a state of being brought into contact with the side surface. Since the auxiliary battery 41 is housed in the chamber 38, even if the auxiliary battery 41 is added to the cleaner body 1, the weight balance of the cleaner body 1 in the left-right direction is not lost due to the weight of the auxiliary battery 41.

Therefore, when the auxiliary battery 41 is housed in the battery housing port 31 of the cleaner body 1 to improve the suction capacity of the cleaner body 1 by the electric blower 5, the operability of the cleaner body 1 is improved. Can be prevented, so that the cleaning performance of the cleaner body 1 can be further improved.

Further, the projecting piece 45 of the connector portion 42 of the auxiliary battery 41 pushes the switch portion 47a of the open / close switch 47 to close the open / close switch 47, thereby electrically connecting the electric blower 5 and the initial battery 35. Only after the connection is released, the pair of connection terminals 41a and 41b of the connector portion 42 of the auxiliary battery 41 cannot be connected to the pair of connection terminals 48a and 48b, respectively.

Therefore, while the electric blower 5 is driven by the battery voltage of the initial battery 35, the pair of connecting terminals 41a and 41b of the auxiliary battery 41 are electrically connected to the pair of connecting terminals 48a and 48b, respectively. Since it becomes impossible to connect, it is possible to prevent a short circuit between the initial battery 35 and the auxiliary battery 41, which occurs when the auxiliary battery 41 is connected in series between the electric blower 5 and the initial battery 35. The initial battery 35, the auxiliary battery 41 and the cleaner body 1 can be prevented from being damaged, and the initial battery 35 and the auxiliary battery 41 can be prevented.
And the reliability of the cleaner body 1 can be further improved.

Next, the configuration of the second embodiment of the present invention will be described with reference to FIGS.

The electric vacuum cleaner shown in FIGS. 7 to 10 is basically the same as the electric vacuum cleaner shown in FIGS. 1 to 6, but the auxiliary battery 41 to the battery housing chamber 34 of the cleaner main body 1 is used.
The auxiliary battery 41 is connected in parallel to the initial battery 35 in the housing.

The initial battery 35 is used for the cleaner body 1
It is formed in an elongated rectangular shape having a height direction in the up-down direction that closes approximately the rear half of the battery accommodating chamber 34 in the traveling direction. On the other hand, the auxiliary battery 41 is formed in a shape substantially equal to that of the initial battery 35, and has a height direction in the up-down direction that closes approximately the front half of the battery accommodating chamber 34 in which the initial battery 35 is accommodated in the traveling direction. The cross section is formed in an elongated rectangular shape. Therefore, the auxiliary battery 41 does not change the weight balance in the left-right direction of the cleaner body 1 when the auxiliary battery 41 is housed in the battery housing chamber 34 housing the initial battery 35.

Further, one connection terminal 5a of the electric blower 5
Between the drive button 23a and the drive button 23a.
One connecting terminal 48a, which is electrically connected to one of the two connecting terminals 41a, is electrically connected. Further, between the other connection terminal 5b of the electric blower 5 and the electric blower 5,
The other connecting terminal 48b electrically connected to the other connecting terminal 41b of the connector portion 42 of the auxiliary battery 41 is electrically connected.

Therefore, in the electric vacuum cleaner shown in FIGS. 7 to 10, the auxiliary battery 41 is accommodated in the battery accommodating chamber 34 in which the initial battery 35 is accommodated, and the pair of connecting terminals 41a, 41a of the auxiliary battery 41, By electrically connecting each of 41b to each of the pair of connecting terminals 48a, 48b, the auxiliary battery 41 is connected in parallel to the initial battery 35 between the electric blowers 5,
The battery capacities of the initial battery 35 and the auxiliary battery 41 are additively increased, and the auxiliary battery 41 is housed in the battery housing chamber 34, so that the weight balance of the cleaner body 1 in the left-right direction is not lost.

Therefore, these initial battery 35 and auxiliary battery
By driving the electric blower 5 with the battery capacity obtained by adding the battery capacity by 41, the driving time of the electric blower 5 can be further extended without replacing the initial battery 35 and the operability of the cleaner body 1 can be increased. Since it is possible to prevent the deterioration of the electric vacuum cleaner, it is possible to obtain the same effect as that of the electric vacuum cleaner shown in FIGS. 1 to 6.

Next, the configuration of the third embodiment of the present invention will be described with reference to FIG.

The electric vacuum cleaner shown in FIG. 11 is basically the same as the electric vacuum cleaner shown in FIGS. 1 to 6, except that an auxiliary battery 41 housed in the battery housing chamber 34 of the cleaner body 1 is used. The changeover switch 51 is provided as a changeover means for changing over the connection with the electric blower 5 to the initial battery 35 in series or to the initial battery 35 alone.

The changeover switch 51 is provided with a plurality, for example, three fixed contacts 51a, 51b, 51c, and these fixed contacts 51a, 51b, 51c are linearly arranged at equal intervals. . Further, the fixed contacts 51a and the fixed contacts 51b and the fixed contacts 51b and the fixed contacts 51c are electrically connected alternately by the movement of the planar switch body 52 in the surface direction.

Further, the fixed terminal 51 of the changeover switch 51 is
The a is electrically connected between the drive button 23a and one connecting terminal 48a electrically connected to one connecting terminal 41a of the auxiliary battery 41. The fixed terminal 51b of the changeover switch 51 is electrically connected to one connection terminal 5a of the electric blower 5 connected to one connection terminal 35a of the initial battery 35, and the one connection terminal 5a is connected to the connection terminal 5a. It is not electrically connected to the electric blower 5. Further, the fixed terminal 51c of the changeover switch 51 is electrically connected to the other connecting terminal 48b which is electrically connected to the other connecting terminal 41b of the auxiliary battery 41, and the other connecting terminal 48b is also connected. It is not electrically connected to the electric blower 5.

Here, in the state before the auxiliary battery 41 is housed in the battery housing chamber 34 of the cleaner body 1, the changeover switch 51
The fixed contact 51a and the fixed terminal 51b are electrically connected by the switch body 52, and the initial battery 35 is electrically connected between the electric blowers 5. Further, after the auxiliary battery 41 is housed in the battery housing chamber 34 of the cleaner body 1 and the auxiliary battery 41 is connected in series to the initial battery 35, the initial battery 35 and the auxiliary battery 41 are short-circuited. To prevent this, the operation of the changeover switch 51 is prevented.

Therefore, the vacuum cleaner shown in FIG.
From the state where the fixed contact 51a and the fixed terminal 51b are electrically connected by the switch body 52 of the changeover switch 51, the fixed contact 51b and the fixed terminal 51c are electrically connected by the switch body 52 of the changeover switch 51. As a result, since the auxiliary battery 41 can be connected in series to each of the initial battery 35 and the electric blower 5, the same operation and effect as those of the electric vacuum cleaner shown in FIGS. 1 to 6 can be obtained.

Next, the configuration of the fourth embodiment of the present invention will be described with reference to FIG.

The electric vacuum cleaner shown in FIG. 12 is basically the same as the electric vacuum cleaner shown in FIG.
By operating the changeover switch 51 after accommodating the auxiliary battery 41 in 34, the initial battery 35 and the auxiliary battery 41 can be connected to the initial battery 35 either in series or in parallel without short-circuiting each of the auxiliary battery 41. To change it.

The changeover switch 51 is moved in conjunction with the operation of the changeover switch 51 to prevent a short circuit between the initial battery 35 and the auxiliary battery 41 which may occur when the changeover switch 51 is operated. Is attached. This prevention switch 61 is provided with a plurality of, for example, three fixed contacts 61a, 61b, 61c.
1a, 61b, 61c are equally spaced apart and linear changeover switch
It is arranged at a position corresponding to the fixed terminals 51a, 51b, 51c of 51. Further, the fixed contact 61a and the fixed contact 61b and the fixed contact 61b and the fixed contact 61c are electrically connected alternately by the movement of the flat plate-shaped switch body 62 in the surface direction.

Furthermore, the fixed terminal 61 of this prevention switch 61
a is electrically connected between the other connection terminal 5b of the electric blower 5 and the electric blower 5. The fixed terminal 61b of the prevention switch 61 is electrically connected between the other connecting terminal 48b electrically connected to the other connecting terminal 41b of the auxiliary battery 41 and the fixed terminal 51c of the changeover switch 51. Has been done. Furthermore, the fixed terminal 61c of this prevention switch 61
Are not electrically connected to either.

Here, in the state before the auxiliary battery 41 is housed in the battery housing chamber 34 of the cleaner body 1, the changeover switch 51
Do not operate. Then, the auxiliary battery 41 is placed in the battery chamber 34.
After storing it in the
Fixed contact 51a and fixed terminal 51b or fixed contact at 52
By electrically connecting 51b and the fixed terminal 51c, the switch body 62 of the prevention switch 61 moves in conjunction with the movement of the switch body 52, and by this switch body 62, the fixed contact 61a and the fixed terminal 61b or Fixed contact 61b
And the fixed terminal 61c is electrically connected.

Therefore, the electric vacuum cleaner shown in FIG.
The auxiliary battery 41 is shipped from the factory when the fixed contact 51a and the fixed terminal 51b are electrically connected by the switch body 52 of the changeover switch 51.
Is connected in parallel to the initial battery 35 between the electric blowers 5, and the fixed contact 61a and the fixed terminal 61b are electrically connected by the switch body 62 of the prevention switch 61.

In this state, the changeover switch 51 is operated to
By electrically connecting the fixed contact 51b and the fixed terminal 51c with the switch body 52 of the changeover switch 51, the auxiliary battery 41 is connected in series to the initial battery 35 and the electric blower 5, and the prevention switch is provided. Since the fixed contact 61b and the fixed terminal 61c are electrically connected by the switch body 62 of 61, it is the same as both the electric vacuum cleaner shown in FIGS. 1 to 6 and the electric vacuum cleaner shown in FIGS. 7 to 10. It is possible to obtain the action and effect, and it is possible to prevent a short circuit between the initial battery 35 and the auxiliary battery 41 which may occur when the changeover switch 51 is operated.

Further, before the auxiliary battery 41 is housed in the cleaner body 1, the changeover switch 51 is operated to set the initial battery 35.
By switching the connection of the auxiliary battery 41 to either parallel or series, the customer needs to improve the suction ability of the cleaner body 1 and the cleaning time of the cleaner body 1 is extended. Since it is possible to meet both the needs of customers, the usability of the cleaner body 1 can be further improved.

In each of the above-described embodiments, the canister type vacuum cleaner of the cyclone type has been described, but an electric vacuum cleaner using a dust pack other than the cyclone type or a circulating type vacuum cleaner may be used. Not only can it be adapted and used, but it can be adapted and used in both upright type and handy type vacuum cleaners.

Further, the electric vacuum cleaner in which the weight balance in the left-right direction of the cleaner body 1 is not lost even if the auxiliary battery 41 is housed in the battery compartment 34 of the cleaner body 1 has been described. 34 to initial battery 35 and auxiliary battery
If each of the 41 is vertically stacked and accommodated, the auxiliary battery 41 can be accommodated in the battery accommodating chamber 34 without impairing the weight balance of the cleaner main body 1 in the lateral and longitudinal directions. The same effect as the form can be obtained.

[0066]

According to the present invention, since the second battery is connected in series to the first battery when the second battery is accommodated in the battery accommodating portion, the battery voltage for driving the electric blower is reduced. It becomes higher, and the suction capacity by driving this electric blower can be improved.

Further, according to the present invention, since the second battery is connected in parallel to the first battery when the second battery is accommodated in the battery accommodating portion, the battery capacity for driving the electric blower is increased. As a result, the cleaning time by driving the electric blower can be extended.

Further, according to the present invention, the connection of the second battery to the first battery is switched to either parallel or series by the switching means, thereby improving the suction capacity by driving the electric blower and cleaning time. Since it can be either extended, the usability can be further improved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of an electric vacuum cleaner of the present invention.

FIG. 2 is a perspective view showing a part of the same electric vacuum cleaner.

FIG. 3 is an explanatory diagram showing the same vacuum cleaner before housing a second battery.

FIG. 4 is a perspective view showing a part of the same electric vacuum cleaner before accommodating a second battery.

FIG. 5 is a perspective view showing a cleaner body of the same electric vacuum cleaner.

FIG. 6 is a perspective view showing the same electric vacuum cleaner.

FIG. 7 is an explanatory diagram showing an electric vacuum cleaner according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing a part of the same electric vacuum cleaner.

FIG. 9 is an explanatory diagram showing the same vacuum cleaner before housing a second battery.

FIG. 10 is a perspective view showing a part of the same electric vacuum cleaner before accommodating the second battery.

FIG. 11 is an explanatory diagram showing an electric vacuum cleaner according to a third embodiment of the present invention.

FIG. 12 is an explanatory diagram showing an electric vacuum cleaner according to a fourth embodiment of the present invention.

[Explanation of symbols]

1 Vacuum cleaner body 5 electric blower 34 Battery storage room as battery storage 35 Initial battery as the first battery 41 Auxiliary battery as second battery 51 Changeover switch as changeover means

Claims (4)

[Claims] 1. A cleaner main body containing an electric blower, a first battery attached to the cleaner main body to drive the electric blower, and a first battery provided in the cleaner main body. An electric vacuum cleaner, comprising: a battery accommodating portion capable of accommodating a separate second battery connected in series to the first battery. 2. A cleaner main body accommodating an electric blower, a first battery attached to the cleaner main body to drive the electric blower, and a first battery provided in the cleaner main body. An electric vacuum cleaner comprising: a battery accommodating portion capable of accommodating a separate second battery connected in parallel to the first battery. 3. A cleaner main body accommodating an electric blower, a first battery attached to the cleaner main body to drive the electric blower, and a first battery provided in the cleaner main body. A battery accommodating portion capable of accommodating a separate second battery connected to the first battery, and a switch for switching connection of the second battery to the first battery to either parallel or series. An electric vacuum cleaner characterized by comprising: 4. The vacuum cleaner body has the same weight balance between a state in which the second battery is accommodated in the battery housing portion and a state in which the second battery is not accommodated in the battery housing portion. The vacuum cleaner according to any one of claims 1 to 3.