JPH08336486A - Battery vacuum cleaner - Google Patents

Abstract

PURPOSE: To provide a battery vacuum cleaner whose battery can be easily and securely put on/off, by interlocking a hanging piece with a ring dent constructed on one end of a battery pack and an operation part mounted on the vacuum cleaner main body and hanging by a battery holding part with an arc protrusion facing to the battery storage part. CONSTITUTION: A positive terminal 1b and a negative terminal 1c mounted on one end of a battery pack 1 are fit into a terminal receiving part 5 on the main body and a hanging piece with a ring dent 1d is attached on the other end periphery of the battery pack 1. An eject button 2 is equipped with a push button part 2a and a secondary battery holding part 2b, and the holding part 2b faces to a battery storage part 9. When the battery pack 1 is to be inserted into the battery storage part 9, by pushing down the battery pack 1 along an inclined part constructed on the battery holding part 2b to fit the negative terminal 1c into the deep inner part of the storage part and pushing down the eject button 2, the eject button is pushed up by a compressed elastic spring to fit the inclined part when the inclined part reached the dent part 1d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless type rechargeable vacuum cleaner using a cylindrical battery pack containing a plurality of rechargeable secondary batteries as a power source.

[0002]

2. Description of the Related Art In a rechargeable vacuum cleaner using a rechargeable secondary battery such as a lead storage battery or a nickel-cadmium battery as an operating power source, the secondary battery is generally mounted inside a cleaner body. In such a rechargeable vacuum cleaner, charging is performed by connecting a charging jack installed in the cleaner body and a charging plug installed in the charger. However, since the secondary battery is housed inside the cleaner body, the battery itself cannot be attached or detached without disassembling the cleaner body, and it is difficult to replace the power supply battery in an emergency.

Further, in order to increase the added value of the product, such a rechargeable vacuum cleaner has a structure in which the power of the vacuum cleaner to suck dust from the nozzle, that is, the suction work rate can be changed by switching a switch, or as an auxiliary tool. Various nozzles were provided in advance according to the usage environment, and when these nozzles were not used, they were fixed to the lower part of the main body.

[0004]

However, in the above-mentioned conventional rechargeable vacuum cleaner, it was necessary to connect the cleaner main body and the charger for charging the power source battery after use. Also, the usable time of the vacuum cleaner depends on the capacity of the power battery housed inside the main body. Therefore, in continuous use for a long time, there is a problem that the remaining capacity becomes insufficient during use and usability is poor.

Further, the adjustment of the suction power of the vacuum cleaner is
This is performed by changing the voltage applied to the motor that is the drive source of the electric blower. This change in the voltage applied to the motor does not change the battery voltage itself supplied from the secondary battery, but changes the voltage supplied to the motor by the resistance. The voltage adjustment using this resistor causes a loss of electric power supplied from the battery to the motor, further shortening the usable time of the cleaner.

When such a rechargeable vacuum cleaner is used for a long period of time, the secondary battery is repeatedly charged and discharged and gradually deteriorates to reach the end of its life. When the secondary battery reaches the end of its life earlier than the mechanical parts of the cleaner body, as described above, the user cannot easily replace the battery. Furthermore, from the viewpoint of effective utilization of global resources, in recent years, recovery of secondary batteries has been actively promoted. In order to promote the recovery of such a secondary battery, it is necessary for a general user to easily remove the secondary battery without disassembling and assembling the cleaner body with a tool or the like.

On the other hand, the gap nozzle as an auxiliary tool is fixed and accommodated in a detachable piece attached to the bottom surface of the main body. When the gap nozzle is not used, the nozzle is fixed to the bottom surface of the main body, which makes the vacuum cleaner less convenient to use. Furthermore, when disposing of the dust sucked in the dust collection case inside the main body, the nozzle becomes an obstacle, and it becomes necessary to remove the nozzle once.

The present invention has been made to solve the above problems, and has a structure in which the power source battery can be easily attached and detached and replaced, and the energy of the secondary battery can be effectively used, and the user-friendliness and the appearance without impairing the appearance can be obtained. It is intended to provide a rechargeable vacuum cleaner having a place and a storage structure.

[0009]

In order to achieve the above object, the rechargeable vacuum cleaner of the present invention has a secondary battery as a power source, instead of the secondary battery built in and fixed in the conventional cleaner body. A plurality of built-in cylindrical battery packs, a cylindrical battery housing portion that detachably houses the battery packs, one end of which is open, an electric blower driven by the battery packs, and an electrical connection between the battery packs and the electric blower. Cleaner body made of synthetic resin with a switch that switches various connection states, a dust collection case that houses a dust collection bag detachably installed inside this cleaner body, and a suction port on the cleaner body A rechargeable vacuum cleaner having a free gap nozzle, wherein a hooking piece having an annular recess provided at one end of the battery pack is interlocked with an operation part provided on the cleaner body to face the battery storage part. Elliptical convex Is obtained by latching the battery holding section having, when the further use of a plurality of the battery pack,
These constitute a circuit connected in series and a circuit connected in parallel, and by switching these two circuits by the switch, the power supply voltage is adjusted and the suction power of the cleaner is changed.

In addition, an elastic piece provided by notching a part of a resin-made reinforcing rib provided on the cleaner main body is made to face the space between the battery housing portion and the exhaust passage from the electric blower. And an engaging rib provided on the surface of the gap nozzle are engaged with each other to hold the gap nozzle in the space.

[0011]

With the above structure, by engaging the hooking piece provided on the battery pack with the hooking piece interlocking with the eject button provided on the cleaner body, the battery pack can be easily and surely attached. Can be attached to and detached from the storage unit.

Further, in order to change the suction work rate as a vacuum cleaner, the series connection and the parallel connection of the battery packs are switched in a circuit manner by a switch, so that it is not necessary to adjust the voltage supplied to the motor by a resistor. The energy of the power supply battery can be effectively used.

Further, since the engaging rib provided on the upper surface of the gap nozzle engages with the elastic piece rib provided on a part of the signal rib of the main body, the gap nozzle is simply and surely accommodated in the space of the main body. It can be done.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a rechargeable vacuum cleaner according to the present invention, showing the overall structure. In FIG. 1, reference numeral 1 denotes a rechargeable cylindrical secondary battery pack, which contains a plurality of secondary batteries, preferably a cylindrical secondary battery. Reference numeral 2 is an eject button, 3 is a main body case, 4 is a gap nozzle, 5 is a terminal receiving portion on the main body side for electrical connection with the battery terminals of the battery pack 1, 6 is a switch for switching the suction power, 7 Is a fuse.

FIG. 2 is a partial sectional view of a rechargeable cylindrical battery pack. Inside the battery pack, a plurality of unit cells 1a composed of a cylindrical secondary battery are connected in series,
It is stored. A terminal is provided at one end of the battery pack, 1b is a positive electrode terminal, and 1c is a negative electrode terminal. When the battery is stored in the battery storage portion inside the cleaner body, these terminals fit with the terminal receiving portion 5 on the main body side to maintain electrical contact. A latching piece having an annular recess 1d is attached to the outer periphery of the other end of the battery pack 1.

FIG. 3 shows an eject button 2 provided on the main body.
FIG. The eject button 2 is composed of a push button portion 2a and a holding portion 2b for holding a secondary battery pack, and the holding portion 2b faces a cylindrical battery storage portion 9. FIG. 4 is an enlarged cross-sectional view of the battery holding portion 2b of the eject button 2, and the battery holding portion 2b of the eject button 2 has an inclined portion 2c.

In the rechargeable vacuum cleaner of the present invention having the above structure, the operation of storing and removing the battery pack 1 inside the main body will be described. The eject button 2 is constantly urged upward by the compression elastic spring 12. When the battery pack 1 is inserted into the cylindrical battery accommodating portion 9 of the main body 3 through the opening thereof, the negative electrode terminal 1c is pushed down along the inclined portion 2c provided in the battery holding portion 2b while the negative electrode terminal 1c is depressed. The eject button 2 is pushed downward while being inserted into the inner part. The eject button 2 pushed downward is pushed up by the compression elastic spring 12 when the inclined portion reaches the annular recess of the battery pack 1, and the inclined portion 2c engages with the annular recess 1d of the battery pack 1. As a result, the battery pack 1 is locked in the storage portion and fixed.

On the contrary, when the battery pack 1 is detached from the main body, the battery pack 1 is pulled out while pushing the push button portion 2a of the eject button 2. At this time, from the annular recess 1d of the battery pack 1 to the battery holder 2b.
The battery pack 1 can be pulled out from the main body without resistance.

As described above, according to the embodiment of the present invention, the battery can be attached and detached by engaging the locking portion provided on the battery pack and the eject button having the inclined portion facing the battery storage portion. The battery pack can be easily and securely attached / detached without using a tool or the like.

Next, the operating state of the vacuum cleaner, that is, the configuration for switching the suction power will be described.

FIG. 5 is a circuit diagram for switching the suction power according to the present invention. By operating the switch, the state of the vacuum cleaner can be switched to three levels of "OFF", "STANDARD", and "STRONG". In FIG. 5, the switch 6
Is composed of six terminals A to F, and the operating state of the vacuum cleaner is switched by switching the connection state of these terminals. The electric blower 10 shown by M in FIG. 5, three unit cells having an output voltage of 1.2V, and battery packs 21 and 22 having an output voltage of 3.6V connected in series are connected to this circuit. Has been done. In addition, fuses 31 and 32 are installed to protect the battery pack and the electric blower from excessive current.

FIG. 5A shows a state in which the switch is in the "OFF" position. At this time, switch terminals A and D
Does not come into contact with other terminals, the electrical connection between the battery packs 21 and 22 and the electric blower 10 is cut off, and the circuit is in the “cut” state.

Then, as shown in FIG. 5B, when the switch button is moved to the right, the terminals A and B and the terminals D and E are connected. At this time, the battery packs 21 and 22 are connected in parallel and a voltage of 3.6 V is applied to the electric blower 10.
Is applied to At this time, the suction work rate of the vacuum cleaner is
The value is set to "standard". In this circuit, as the fuse for circuit protection, only the fuse 31 is included in the circuit, and the fuse is selected according to the "standard" current capacity value.

When the switch button is further moved to the right and the switch is set to the "strong" state, the terminals C and F and B and E are conducted. As a result, the battery packs 21 and 22 are connected in series. Since the six unit cells of the battery pack are connected in series, the electric blower operates at a voltage of 7.2 V, and the vacuum cleaner has a "strong" suction power. In this circuit, the fuse 32 for circuit protection
, It is necessary to select a fuse that matches the current capacity at "strong".

By using the switch having such a configuration and changing the connection state of the battery packs to serial connection or parallel connection, the voltage applied to the electric blower 10 is adjusted to change the suction power of the cleaner. I have.

Next, a method of accommodating the gap nozzle and the structure of the accommodating portion will be described. The main body exterior case of the rechargeable vacuum cleaner according to the present invention is made of a synthetic resin and is composed of two cases, a right case and a left case, which are divided at the central portion in the longitudinal direction. FIG. 6 shows a front view of the main body right case, and FIG. 7 shows a front view of the main body left case. In these figures, the battery case 9a, the battery case 9a,
9b and the space 8a between the exhaust passage of the electric blower 10,
8b is provided. In the right case 3a of the main body, a rib 13a made of an elastic piece is formed by cutting out a part of a reinforcing rib integrally provided in the main body in the space. Similarly, the rib 13b is also present in the space on the main body left case 3b.

On the other hand, FIG. 8 is a top view of the gap nozzle 4 detachably attached to the suction port of the dust collecting case. Engaging ribs 4 a are formed on the upper surface of the gap nozzle 4. Further, FIG. 9 shows a top view of the gap nozzle (small) 4 ′ locked to the suction port 4b of the gap nozzle 4. 4'a
Is an engaging rib provided on the upper surface of the gap nozzle (small) 4 '.

When the gap nozzle is inserted into the space of the main body 3, the engaging ribs 4a and 4'a provided on the upper surfaces of the gap nozzle 4 and 4'are elastic ribs formed by cutting out a part of the main body reinforcing rib. Push up 13a and 13b. When the gap nozzle completely enters the space, the engaging ribs 4a and 4'a provided on the upper surface of the gap nozzle as shown in FIG. 1 are elastic ribs 13a and 13b formed by cutting out a part of the main body reinforcing ribs.
And the gap nozzles A and B are easily locked in the space of the main body 3. FIG. 10 shows a rear view when the gap nozzles 4 and 4 ′ are inserted in the left and right cases 3a and 3b of the main body, and FIG. 11 shows an enlarged view of the insertion portion.

When the gap nozzle is pulled out from the space of the main body 3, the gap nozzle can be easily pulled out by the operation reverse to that at the time of insertion. As described above, according to the structure of the present invention, the gap nozzle can be housed in the main body, and the gap nozzle is locked.
Since it is performed by the rib of the elastic piece provided on the main body, it can be performed easily and reliably.

Therefore, during cleaning, the gap nozzle does not get in the way, and when the gap nozzle is needed, it can be immediately mounted and stored. Furthermore, since the gap nozzle is housed in the main body when it is not used, it does not spoil the appearance.

[0032]

As is apparent from the above description, two rechargeable battery packs are used, and the hooking piece provided at one end of the pack is engaged with the holding portion provided inside the main body of the cleaner. By doing so, it is possible to easily and surely attach and detach the battery without using a tool or the like. Further, since the two battery packs are used and the connection is switched between the series connection and the parallel connection, there is no power loss and the suction power can be adjusted by the change of the power supply voltage.

Furthermore, by preparing a plurality of battery packs as spares, it is possible to extend the usable time of the vacuum cleaner.

The clearance nozzle is held by the elastic rib formed by cutting out a part of the reinforcing rib of the main body and the engaging rib provided on the upper surface of the clearance nozzle, so that the cleaner main body is in use. It can be stored in a space that does not get in the way. In addition, the nozzle can be easily attached to and detached from the space when it is used, and it is possible to provide a convenient rechargeable vacuum cleaner.

[Brief description of drawings]

1 is a cross-sectional view of a rechargeable vacuum cleaner according to the present invention.

FIG. 2 is a partial sectional view of a cylindrical battery pack.

FIG. 3 is a front view of an eject button provided inside the main body.

FIG. 4 is a sectional view of a battery holder.

[Fig. 5] Circuit diagram

FIG. 6 is a front view of the right case of the main body.

FIG. 7 is a front view of the left case of the main body.

FIG. 8 is a top view and a sectional view of a gap nozzle.

FIG. 9 is a top view and a sectional view of a gap nozzle (small).

FIG. 10 is a rear view when the gap nozzle is inserted into the main body case.

FIG. 11 is an enlarged view of the insertion portion.

[Explanation of symbols]

 1 Rechargeable Cylindrical Battery Pack 1a Unit Battery 1b Battery Pack Positive Terminal 1c Battery Pack Negative Terminal 1d Annular Recess 2 Eject Button 2a Push Button 2b Battery Holding 2c Inclined 3 Body Case 3a Body Right Case 3b Body Left Case 4 Gap nozzle 4'Gap nozzle (small) 4a Engaging rib provided on the surface of the gap nozzle 4a 'Engaging rib provided on the surface of the gap nozzle (small) 5 Terminal receiving part on the main body 6 Switch 7 Fuse 8 Battery Space provided in the storage part and the exhaust passage of the electric blower 8a Space of the main body right case 8b Space of the main body left case 9 Battery storage part 9a Battery storage part of the main body right case 9b Battery storage part of the main body left case 10 Electric blower 12 Compression elasticity Spring 13 Elastic rib 13a Body right case elastic rib 13b Body left case elastic rib 21,22 Three The battery pack 31 and 32 fuse unit cells are connected in series

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigehiko Shimomura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A cylindrical battery pack containing a plurality of secondary batteries as a power source, a cylindrical battery accommodating portion accommodating the battery pack detachably, and an electric blower driven by the battery pack. , And a cleaner body equipped with a switch that switches the electrical connection state between the battery pack and the electric blower, and a dust collection case that houses a dust collection bag that is detachably installed inside the cleaner body. In a vacuum cleaner, a hooking piece having an annular concave portion provided at one end of the battery pack has an arc-shaped convex portion which is interlocked with an operation portion provided in the cleaner body and faces the battery storage portion. A rechargeable vacuum cleaner characterized by being held by a battery holder. 2. A cylindrical battery pack containing a plurality of secondary batteries as a power source, a cylindrical battery accommodating portion for detachably accommodating the battery pack, one end of which is open, and an electric blower driven by the battery pack. , And a cleaner body equipped with a switch that switches the electrical connection state between the battery pack and the electric blower, and a dust collection case that houses a dust collection bag that is detachably installed inside the cleaner body. In a vacuum cleaner, a plurality of battery packs are provided, and a circuit in which these battery packs are connected in series and a circuit connected in parallel are formed, and these two circuits are switched by the switch. Vacuum cleaner. 3. A cylindrical battery pack containing a plurality of secondary batteries as a power source, a cylindrical battery accommodating portion for detachably accommodating the battery pack, one end of which is open, and an electric blower driven by the battery pack. , And a vacuum cleaner body made of synthetic resin having a switch for switching the electrical connection state between the battery pack and the electric blower, and a dust collection case for accommodating a dust collection bag detachably provided in the vacuum cleaner body. When,
In a rechargeable vacuum cleaner having a detachable gap nozzle at a suction port of a cleaner body, a resin reinforcement provided on the cleaner body is provided in a space portion between the battery housing and an exhaust passage from an electric blower. A rechargeable vacuum cleaner characterized in that an elastic piece provided by notching a part of the rib is exposed and the elastic portion is engaged with an engaging rib provided on the surface of the gap nozzle to hold the gap nozzle. .