JP2021003510A - Battery-driven vacuum cleaner - Google Patents

Abstract

To prevent a battery from touching a floor surface when a cleaner body is placed on the floor surface by a simple structure in a vacuum cleaner having a battery which can be attached or detached by a user, and a part of which is exposed.SOLUTION: A vacuum cleaner includes: a cleaner body gripped by a user for use in which the rear end of a straight tubular extension pipe to which a suction port body is connected at the front end is connected to the front; a battery whose rear end is exposed, which is mounted below the rear end of the cleaner body in a vertical direction orthogonal to a front-back direction along the extension pipe, and can be attached or detached by the user; a main leg part provided to the cleaner body, whose tip is positioned at the lowest end; and auxiliary leg parts provided behind the main leg part of the cleaner body. The auxiliary leg parts come in contact with the floor surface together with the main leg part when the cleaner body to which the extension pipe is not connected is placed on the flat floor surface, and support the cleaner body so that the rear end part of the battery is positioned above the floor surface.SELECTED DRAWING: Figure 13

Description

The present invention relates to a battery-powered vacuum cleaner, and more particularly to a vacuum cleaner including a user-detachable battery.

In recent years, a compact and lightweight battery-powered vacuum cleaner that the user holds and uses the vacuum cleaner body has become widespread. It is known that a battery having a large mass is arranged in the lower part of the vacuum cleaner body so that the vacuum cleaner body is stable when the user grips the vacuum cleaner body (see, for example, Patent Document 1).

JP-A-2018-196810

Some stores the battery inside the main body. In that case, a cover that covers the entire battery is required, but from the viewpoint of weight reduction, it can be said that it is an extra configuration. By exposing a part of the battery to the outside, it is possible to reduce the weight.
From the viewpoint of the balance of the center of gravity, it is preferable to position the battery below the vacuum cleaner body. The one in Patent Document 1 corresponds to this. However, when the vacuum cleaner is placed on the floor, the weight of the vacuum cleaner body is supported by the rear part of the battery. This puts a heavy burden on the battery. In particular, for a battery that can be attached and detached by the user, the power supply terminal on the battery side and the power receiving terminal on the vacuum cleaner body side are brought into contact with each other to supply the power stored in the battery to the vacuum cleaner body. The stress that supports the weight of the vacuum cleaner will be applied. This is not preferable from the viewpoint of durability and safety.

On the other hand, if a complicated structure is adopted to reduce the load on the strength of the battery, the weight cannot be reduced.
The present invention provides a vacuum cleaner made in consideration of the above circumstances.

In the present invention, the rear end of a straight tubular extension pipe to which the suction port is connected to the front end is connected to the front, and the vacuum cleaner body to be gripped and used by the user and the vertical direction orthogonal to the front-rear direction along the extension pipe. A user-detachable battery mounted below the rear end of the vacuum cleaner body and exposing the rear end, a main leg portion provided on the vacuum cleaner main body and having a tip located at the lowermost end thereof, and the main leg portion. It is provided with an auxiliary leg portion provided on the vacuum cleaner main body at the rear side, and the auxiliary leg portion is provided on the floor surface together with the main leg portion when the vacuum cleaner main body to which the extension pipe is not connected is placed on a flat floor surface. Provided is an electric vacuum cleaner that is in contact with the vacuum cleaner and supports the vacuum cleaner body so that the rear end portion of the battery is located above the floor surface.

In the vacuum cleaner according to the present invention, the battery can be prevented from touching the floor surface.

It is a perspective view which shows the vacuum cleaner according to Embodiment 1. FIG. It is a perspective view which looked at the vacuum cleaner main body from the front diagonally above from the electric vacuum cleaner shown in FIG. It is a perspective view which looked at the vacuum cleaner main body shown in FIG. 2 from the rear diagonally lower side. It is a left side sectional view of the vacuum cleaner main body shown in FIG. It is a right side sectional view of the vacuum cleaner main body shown in FIG. It is a perspective view which looked at the state which removed the battery from the vacuum cleaner body shown in FIG. FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. FIG. 4 is a cross-sectional view taken along the line BB shown in FIG. 4 (state in which the battery is not attached). It is a perspective view which looked at the battery which concerns on Embodiment 1 from diagonally above. It is sectional drawing of the main part on the left side surface side of the vacuum cleaner main body shown in FIG. It is a perspective view seen from. FIG. 10 is a diagram corresponding to FIG. 10 in a state where the lock by the latch claw is released. It is a left side view which shows the state which put the vacuum cleaner main body shown in FIG. 1 on a flat floor surface. FIG. 2 is a left side view showing a state in which the vacuum cleaner main body shown in FIG. 2 is placed on a flat floor surface.

Hereinafter, the present invention will be described in more detail with reference to the drawings. It should be noted that the following description is exemplary in all respects and should not be construed as limiting the invention.
(Embodiment 1)
In this embodiment, a cordless type stick-type vacuum cleaner will be shown and specifically described as a typical example.

FIG. 1 is a perspective view showing a vacuum cleaner according to this embodiment, FIG. 2 is a perspective view of the vacuum cleaner body of the vacuum cleaner shown in FIG. 1 as viewed from diagonally forward and upward, and FIG. 3 is shown in FIG. It is a perspective view which looked at the vacuum cleaner body shown from the rear diagonally downward. 4 is a left sectional view of the vacuum cleaner main body shown in FIG. 2, and FIG. 5 is a right sectional view of the vacuum cleaner main body shown in FIG. FIG. 6 is a perspective view of the state in which the battery is removed from the vacuum cleaner main body shown in FIG. 2 as viewed from diagonally backward and downward. In FIG. 2, arrows indicate the front-back, up-down, left-right directions of the vacuum cleaner body. The axis of the extension pipe 60 and the suction pipe portion 21b to which one end thereof is connected is in the front-rear direction. The side to which the suction port body 50 is connected to the extension pipe 60 is the front side, and the side to which the suction pipe portion 21b is connected is the rear side. An intake port 21ba, which is a circular opening, is formed at the front end of the suction pipe portion 21b, and the axis of the suction pipe portion 21b passes through the center of the intake port 21ba. A dust collector 30 including a substantially tubular dust collecting container 31 is mounted parallel to the axis of the suction pipe portion 21b. The vertical direction is a direction along the surface including the axis of the suction pipe portion 21b and the central axis of the dust collecting container 31 and orthogonal to the front-rear direction. The side with the operation switch portion 21d is on the upper side, and the side with the battery mounting portion 21f is on the lower side. The left and right directions are based on the state of facing forward.

7 is a cross-sectional view taken along the line AA shown in FIG. 4, and FIG. 8 is a cross-sectional view taken along the line BB shown in FIG. 4 (however, the battery is not attached). FIG. 9 is a perspective view of the battery according to this embodiment as viewed from diagonally above.
Further, FIG. 10 is a cross-sectional view of a main part on the left side surface side of the vacuum cleaner main body shown in FIG. 2, and FIG. 11 is a view corresponding to FIG. 10 in a state where the lock by the latch claw is released.
FIG. 12 is a left side view showing a state in which the vacuum cleaner main body shown in FIG. 1 is placed on a flat floor surface, and FIG. 13 is a state in which the vacuum cleaner main body shown in FIG. 2 is placed on a flat floor surface. It is a left side view which shows.

The stick-type cordless vacuum cleaner 1 shown in FIG. 1 includes a vacuum cleaner main body 10, a battery 40 detachably attached to the vacuum cleaner main body 10, a suction port body 50, a vacuum cleaner main body 10 and an extension pipe 60. To be equipped. One end of the extension pipe 60 is detachably connected to the vacuum cleaner main body 10, and the other end is detachably connected to the suction port 50.

As shown in FIGS. 1 to 8, the vacuum cleaner main body 10 is roughly classified into a drive device 20 having a built-in electric blower 22 and a dust collector 30 detachably attached to the drive device 20.
The drive device 20 includes a housing 21, an electric blower 22 provided in the housing 21, and an electric circuit including a control circuit board 23 provided in the housing 21. In the control circuit board 23, various circuits including a CPU, a ROM for storing programs, a RAM, and an input / output interface are mounted on the board.

The housing 21 has an electric blower storage section 21a, a suction pipe section 21b, a handle section 21c, an operation switch section 21d, a battery mounting section 21f, and a holder section 21h (see FIG. 2). As the material, for example, a thermoplastic resin such as ABS resin or polycarbonate resin is applied.
The surface of the holder portion 21h is covered with a flexible member (for example, rubber) so that it is not slippery and is not easily damaged even if it comes into contact with furniture or the like.
The electric blower storage unit 21a stores the electric blower 22, the control circuit board 23, and the like. The suction pipe portion 21b is connected to the upper part of the front end of the electric blower storage portion 21a and projects forward. The handle portion 21c connects the rear end of the suction pipe portion 21b and the rear end of the electric blower storage portion 21a. The operation switch portion 21d is provided on the handle portion 21c. The operation switch unit 21d has, for example, a power switch for switching the power supply to ON or OFF, a power switch for switching the output of the electric blower 22 to strong or weak, and the like, and is attached to the control circuit board 23 via a lead wire (not shown). It is electrically connected.

The handle portion 21c is similar to the shape in which the figure 7 is tilted sideways, and the operation switch portion 21d is provided in the vicinity of the bent portion where the long side and the short side forming the figure 7 are connected. .. More specifically, the long side of the handle portion 21c extends diagonally upward from the front end side toward the rear. The rear end of the long side is connected to the front end of the short side extending diagonally downward and rearward near the upper part of the rear end of the electric blower housing portion 21a. The rear end of the short side extends diagonally forward and downward near the rear of the electric blower storage portion 21a and above the battery 40, and is connected to the rear of the electric blower storage portion 21a. The rearmost end of the handle 21c is located behind the battery 40.
When the long side of the handle portion 21c is gripped, the vacuum cleaner main body 10 can be easily maintained substantially horizontal to the floor surface, which is suitable for cleaning by moving the suction port body 50 under the chair or in a deep gap. Further, the mass of the vacuum cleaner main body 10 from which the extension pipe 60 has been removed is large in proportion to the electric blower 22 and the battery 40, and a portion close to the center of gravity can be gripped, so that the vacuum cleaner main body 10 can be easily handled.
On the other hand, when the user grips the short side, the user can easily move the suction port 50 on the front floor surface while maintaining the upright posture.

The vacuum cleaner body 10 from which the extension pipe 60 has been removed can be used as a handy type vacuum cleaner. In consideration of this case, a rotatable brush 52 may be attached to the tip of the suction pipe portion 21b as shown in FIG. 13 (not shown except for FIG. 13).
The brush 52 shown in FIG. 13 has a substantially horseshoe-shaped cross section on surfaces along the vertical and horizontal directions, and brush rotating bearings 52a, which are recesses, are formed on the left and right inner surfaces. Convex portions (not shown in FIG. 13) are formed on the left and right outer surfaces of the suction pipe portion 21b so as to correspond to the brush rotating bearing 52a.

The brush 52 is rotatably attached to the suction pipe portion 21b so that the brush rotating bearing 52a sandwiches the convex portion from the left and right.
When using the brush 52, the user rotates the brush 52 to the right (clockwise) in FIG. 13 and uses the brush 52 at a position where the rear side of the brush 52 comes into contact with the intake port 21ba.
When connecting the extension pipe 60, the brush 52 is rotated counterclockwise (counterclockwise) and stored in the position shown in FIG.
As the brush 52, a separate brush that can be inserted into the intake port 21ba may be used instead of the rotatable brush as shown in FIG. Further, the suction port body 50 can be directly connected to the intake port 21ba without passing through the extension pipe 60.

The lock mechanism portion 25 is arranged at a portion connecting the rear end of the short side of the handle portion 21c and the electric blower storage portion 21a. The lock mechanism portion 25 locks the battery 40 mounted on the battery mounting portion 21f described later in the housing 21. Details will be described later.

The holder portion 21h is integrally fixed with the electric blower storage portion 21a. As shown in FIG. 1, when the user is using the cordless vacuum cleaner 1 with the suction port 50 and the extension pipe 60 connected and the cleaning is temporarily interrupted, the cordless vacuum cleaner 1 is used on the back of a chair or a desk. It is for hanging on the edge of the chair and leaning against it. Alternatively, the cordless vacuum cleaner 1 is hooked on the edge of furniture or the like and stored.
Further, when the cordless vacuum cleaner 1 is placed face down on a flat floor FL as shown in FIG. 12, such as when the user temporarily suspends cleaning, the holder portion 21h protruding from the lowermost end of the vacuum cleaner body 10 is , Functions as a leg (main landing gear) that supports the vacuum cleaner body 10 on the floor FL.

In the housing 21, the dust collector 30 is detachably mounted in front of the electric blower storage portion 21a and below the suction pipe portion 21b. A battery mounting portion 21f is provided at the lower part of the rear end of the electric blower storage portion 21a, and the battery 40 is detachably mounted.
Further, an intake port 21ba is provided at the front end of the suction pipe portion 21b of the housing 21, and an outlet 21bb is provided on the side wall below the suction pipe portion 21b. Further, an inflow port 21ab is provided at the front end of the electric blower storage portion 21a of the housing 21, and an exhaust port 21aa is provided on the right side surface of the electric blower storage portion 21a.

Subsequently, the dust collector 30 will be described. The dust collector 30 has a dust collection container 31 and a filter unit 32 that can be attached to and detached from the dust collection container 31.
The dust collecting container 31 is formed in a bottomed tubular shape having a dust disposal port, and an introduction portion 31a is provided in a part around the bottomed tubular shape. The tip of the introduction portion 31a is open and serves as an introduction port.
The filter portion 32 has a cup portion 32a, a mesh-shaped inner cylinder portion 32b, and a filter main body 32c. The cup portion 32a has a hole portion leading to the mesh-shaped inner cylinder portion 32b at the center, and is detachably fitted into the dust disposal port of the dust collection container 31. One end of the mesh-shaped inner cylinder portion 32b is connected to the circumference of the hole portion of the cup portion 32a and is housed in the dust collecting container 31. The filter body 32c is housed in the cup portion 32a.

With the dust collector 30 attached to the vacuum cleaner body 10, the outlet 21bb of the suction pipe portion 21b and the introduction portion 31a of the dust collection container 31 are airtightly connected (see FIG. 7). Further, the opening of the cup portion 32a and the inflow port 21ab of the electric blower accommodating portion 21a are airtightly connected with the filter main body 32c of the filter portion 32 accommodated (see FIG. 5). In this way, a ventilation path driven by the electric blower 22 is formed in the vacuum cleaner main body 10.

That is, when cleaning the floor surface or the like with the cordless vacuum cleaner 1, by driving the electric blower 22 of the vacuum cleaner main body 10, dust-containing air is sucked from the suction port body 50 and cleaned through the extension pipe 60. It flows into the suction pipe portion 21b of the machine body 10 (indicated by arrow F1 in FIG. 4). The dust-containing air that has flowed into the suction pipe portion 21b flows into the dust collection container 31 via the outlet 21bb and the introduction portion 31a. A part of the relatively large dust in the dust-containing air is centrifuged in the dust collecting container 31, and the remaining dust is captured by the mesh-shaped inner cylinder portion 32b. Air containing finer dust than the dust captured by the mesh-shaped inner cylinder portion 32b passes through the inside of the mesh-shaped inner cylinder portion 32b and passes through the filter main body 32c. The minute dust is captured by the filter body 32c (indicated by arrow F2 in FIG. 4). The air from which minute dust has been removed by the filter body 32c flows into the electric blower storage section 21a, passes through the electric blower 22 and the control circuit board 23, and is exhausted to the outside from the exhaust port 21aa (arrows in FIG. 4). (Indicated by F3).

As shown in FIGS. 4 and 5, the rotating shaft of the electric blower 22, the central shaft of the bottomed tubular dust collecting container 31 and the central shaft of the mesh-shaped inner cylinder portion 32b are concentric and collect them. The appearance of the dust device 30 and the electric blower storage unit 21a is also concentric and substantially tubular, and the central axis thereof is parallel to the axial center of the extension pipe 60. Further, the battery mounting portion 21f is behind the electric blower housing portion 21a, and the battery 40 is exposed at the lower part of the rear end of the electric blower housing portion 21a in a state where the battery 40 is mounted on the battery mounting portion 21f. Further, the extension pipe 60, the suction pipe portion 21b, and the long side portions of the handle portion 21c are connected in the front-rear direction. With such a layout, the cordless vacuum cleaner 1 gives a slim impression that extends long in the front-rear direction.
Further, as shown in FIGS. 4, 5 and 7, the axis of the suction pipe portion 21b and the axis of the central axis of the dust collecting container 31 and the mesh-shaped inner cylinder portion 32b are in the same plane in the vertical direction.

Next, the battery mounting portion 21f of the vacuum cleaner main body 10 and its peripheral structure will be described.
As shown in FIGS. 3 and 6, a battery mounting portion 21f is provided at the rear end of the electric blower housing portion 21a. The battery mounting portion 21f is opened rearward when the user holds the handle portion 21c of the vacuum cleaner main body 10 during use. That is, the battery mounting portion 21f has a battery insertion port 21fa that opens rearward.

Further, the battery mounting portion 21f has guide grooves 21fg provided on the left and right inner surfaces, and a plurality of blade-shaped power receiving terminals 27 provided behind the battery insertion port 21fa (see FIG. 8). The plurality of power receiving terminals are electrically connected to the control circuit board 23 (see FIG. 4) via lead wires (not shown).

On the other hand, as shown in FIGS. 3, 4 and 9, the battery 40 includes a battery housing 41 formed in a flat and substantially rectangular parallelepiped shape, a plurality of cells 42 provided in the battery housing 41, and a battery. It has a plurality of slits 43 formed at the front end of the housing 41. A clip-shaped power supply terminal (not shown) is provided at the back of each slit 43. In this embodiment, each power supply terminal is made of gold-plated or tin-plated brass, phosphor bronze or copper, and when mounted on the vacuum cleaner body 10, it reliably contacts the corresponding power receiving terminal 27 of the battery mounting portion 21f. It has springiness as it does.
The battery housing 41 projects rearward by a certain length (for example, about 2 to 3 cm) from the battery insertion port 21fa in a state of being mounted on the battery mounting portion 21f of the vacuum cleaner main body 10 (for example, FIGS. 2 and 2 and FIG. See 3).
Further, the battery housing 41 includes a convex guide 41a provided along the left and right outer surfaces, a recess 41b provided at the rear portion of the upper surface, and a stepped latch portion 41c provided at the front end of the recess 41b. Has (see FIG. 9). The step of the latch portion 41c has an inclined surface shape.

When the front end of the battery 40 configured in this way is inserted into the battery insertion port 21fa of the battery mounting portion 21f, the left and right convex guides 41a of the battery 40 are along the left and right guide grooves 21fg of the battery mounting portion 21f. Slide forward. Then, the plurality of power supply terminals of the battery 40 and the plurality of power receiving terminals 27 of the battery mounting portion 21f are electrically connected. At this time, the latch claw 25aa of the lock mechanism portion 25 is caught by the latch portion 41c of the battery 40 (see FIG. 5). In FIG. 5, the latch claws 25aa are shown at two positions. The lower position is a state in which the battery 40 is hooked on the latch portion 41c, and the upper position is a state in which the battery 40 is unhooked and the battery 40 can be inserted and removed.

A battery having a different number of cells 42 from those in FIGS. 4 and 5, that is, a battery having a different capacity may be mounted on the battery mounting portion 21f. The batteries having different capacities have the same shape of the convex guide 41a, the concave portion 41b, the latch portion 41c, and the slit 43 as the battery 40 shown in FIGS. 4, 5 and 9, and the convex guide 41a depends on the number of cells 42. The length in the direction along is different. When batteries of different capacities are mounted on the battery mounting portion 21f, the length of the battery exposed from the vacuum cleaner main body 10 is different.

The lock mechanism portion 25 includes a latch member 25a, a push button 25b, a first urging member 25c, and a second urging member 25d. The latch member 25a has a latch claw 25aa. The push button 25b comes into contact with the latch member 25a. The first urging member 25c urges the latch member 25a in a direction in which the latch claw 25aa protrudes outward from the latch claw opening 21fd described later. The second urging member 25d urges the push button 25b in a direction away from the latch member 25a.

As shown in FIGS. 4, 5 and 10, when the latch member 25a is urged by the first urging member 25c, the latch claw 25aa projects outward from the latch claw opening 21fd. Therefore, when the battery 40 is mounted on the battery mounting portion 21f, the latch claw 25aa is caught by the latch portion 41c of the battery 40, and the battery 40 is locked to the battery mounting portion 21f. The push button 25b is urged by the second urging member 25d and projects outward from the push button opening 21fe.

Further, as shown in FIG. 11, when the push button 25b is pushed into the handle portion 21c in the arrow P direction against the urging force of the second urging member 25d, the latch member 25a is pressed. The latch member 25a rotates against the urging force of the first urging member 25c with one end on the side close to the push button 25b as a fulcrum. The latch claw 25aa on the other end side of the latch member 25a moves so as to retract into the back of the latch claw opening 21fd. As a result, the latch claw 25aa and the latch portion 41c of the battery 40 are released from being caught, and the lock of the battery 40 in the battery mounting portion 21f is released.

Further, as shown in FIGS. 3 to 6, a pair of left and right auxiliary legs 26L and 26R having a roundness and projecting downward are arranged on the lower surface of the battery mounting portion 21f arranged behind the holder portion 21h. Has been done. That is, the auxiliary legs 26L and 26R are arranged in the downward direction of the vacuum cleaner main body 10 behind the holder portion 21h.
The electric blower 22 and the battery 40 occupy a large proportion of the mass of the vacuum cleaner main body 10. When using the cordless vacuum cleaner 1, the moment around the handle is small and they are concentrated in the vicinity of the handle portion 21c so that the user can easily handle it. That is, it is concentrated on the rear side of the vacuum cleaner main body 10.

Therefore, as shown in FIG. 13, when the vacuum cleaner main body 10 from which the extension pipe 60 is removed is placed on the flat floor surface FL, the rear side of the lowermost holder portion 21h comes into contact with the floor surface FL.
The battery 40 mounted on the battery mounting portion 21f is exposed at the rear end of the vacuum cleaner body 10. If the lower part of the rear end of the battery 40 comes into contact with the floor surface FL to support the vacuum cleaner main body 10, stress is applied to the portion where the battery 40 and the vacuum cleaner main body 10 come into contact with each other.

However, in order to make it easier to insert and remove the battery 40 into the vacuum cleaner body 10, the battery insertion port 21fa and the battery housing 41 are fitted, the guide groove 21fg and the convex guide 41a are fitted, and the power receiving terminal of the battery mounting portion 21f. There is a margin in the fitting of the slit 43 of the battery 40.
On the other hand, since it is necessary to ensure that the power receiving terminal of the battery mounting portion 21f and the power supply terminal of the battery 40 are in contact with each other, a grip type power supply terminal is formed so as to have a spring property.

When the lower part of the rear end of the battery 40 comes into contact with the floor surface FL to support the vacuum cleaner main body 10, stress is applied to this spring portion. However, if a large stress is repeatedly applied to the spring portion, poor contact between the power feeding terminal and the power receiving terminal may occur, and such a configuration is not preferable.
There is also a solution method of attaching a cover to the housing 21 so as not to expose the lower part of the rear end of the battery, but adding a cover having appropriate strength violates the demand for weight reduction. There is a strong demand for weight reduction of this type of cordless vacuum cleaner that the user holds and uses the vacuum cleaner body 10. Further, it is not preferable from the viewpoint of operability that the operation of opening and closing the cover is added to the attachment / detachment of the battery 40.

According to this embodiment, a notch is provided at the rear end of the center of the battery mounting portion 21f at the rear end of the vacuum cleaner main body 10 to facilitate the insertion and removal of the battery 40. Further, a pair of left and right auxiliary legs 26L and 26R having a roundness and projecting downward are arranged on the lower surfaces of the left and right sides of the notch. Then, as shown in FIG. 13, when the vacuum cleaner main body 10 from which the extension pipe 60 is removed is placed on the flat floor surface FL, the lower end of the holder portion 21h and the lower ends of the auxiliary leg portions 26L and 26R are placed on the floor surface FL. The vacuum cleaner main body 10 is supported by contacting the battery 40, and the rear end portion of the battery 40 does not contact the floor surface FL. Therefore, no extra stress is applied to the power feeding terminal and the power receiving terminal that electrically connect the battery 40 and the vacuum cleaner main body 10.
That is, when the vacuum cleaner main body 10 is placed on the flat floor surface FL, the battery 40 can be prevented from touching the floor surface FL by a simple structure.

Further, since the holder portion 21h and the auxiliary leg portions 26L and 26R arranged on the lower surface of the battery mounting portion 21f are both a part of the housing 21, the vacuum cleaner main body 10 is firmly supported. In this embodiment, the auxiliary legs 26L and 26R are formed of a resin integrated with the electric blower storage portion 21a and the battery mounting portion 21f. The protruding surfaces of the auxiliary legs 26L and 26R are rounded so that they will not be damaged by the user's touch and will not be damaged by the furniture or floor surface. There is. As shown in FIG. 13, when the vacuum cleaner main body 10 is placed in a state where the holder portion 21h at the lowermost end and the auxiliary legs 26L and 26R on the rear side are in contact with the floor surface FL, the front of the vacuum cleaner main body 10 is obliquely upward. It will be in a suitable state. Here, the roundness of the auxiliary legs 26L and 26R is formed along the front-rear direction. Therefore, even if the floor surface FL has some irregularities, or even if an object having a slight thickness is placed on the floor surface FL in which any of the holder portion 21h, the auxiliary leg portions 26L, and 26R is in contact, the auxiliary leg It is difficult to damage the surface of the other party with which the parts 26L and 26R come into contact.
When batteries with different numbers of cells can be installed as described above, the auxiliary legs 26L and 26R are holders so that the rear end of the installed battery does not come into contact with the floor FL regardless of which battery is installed. The vacuum cleaner main body 10 is supported together with the portion 21h.
The shapes of the auxiliary legs 26L and 26R are not limited to the shapes shown in FIGS. 3 and 6 as long as they have roundness. For example, the shape may be hemispherical or rounded in the left-right direction.
Further, when batteries having different capacities and sizes can be mounted on the battery mounting portion 21f, preferably, even if a battery having a size in which the rear end is exposed for the longest time is mounted among those batteries, after the battery. The protruding heights of the auxiliary legs 26L and 26R are set so that the ends do not come into contact with the floor surface FL.

(Embodiment 2)
In the first embodiment, the auxiliary legs 26L and 26R are made of a resin integrated with the electric blower storage portion 21a and the battery mounting portion 21f. That is, it is integrated with the exterior of the vacuum cleaner main body 10. On the other hand, the auxiliary legs 26L and 26R in this embodiment are configured separately from the electric blower storage portion 21a and the battery mounting portion 21f.
Preferably, flexible members such as polyurethane resin and rubber are used for the auxiliary legs 26L and 26R. Separate auxiliary legs 26L and 26R are attached to the electric blower storage portion 21a and the battery mounting portion 21f.
When the vacuum cleaner main body 10 is placed on a flat floor surface FL as shown in FIG. 13, the auxiliary legs 26L and 26R are in a compressed state due to the mass of the vacuum cleaner main body 10 and the battery 40. In that state, the auxiliary legs 26L and 26R support the vacuum cleaner main body 10 together with the holder portion 21h so that the rear end portion of the battery 40 does not come into contact with the floor surface FL.

(Embodiment 3)
The holder portion 21h shown in the first embodiment has a width equivalent to the distance between the left and right auxiliary leg portions 26L and 26R in the left-right direction. This is to prevent the cordless vacuum cleaner 1 from falling in the left-right direction when it is hung on the edge of furniture such as a desk.
Therefore, as shown in FIG. 13, when the vacuum cleaner main body 10 is placed on the floor surface FL, the auxiliary legs do not fall to the left or right even if there is only one in the center instead of one pair on the left and right.
That is, there may be one aspect in which the auxiliary leg is provided. Since the vacuum cleaner main body 10 shown in the first embodiment has a notch at the center of the rear end of the battery mounting portion 21f, auxiliary legs 26L and 26R are provided on the left and right sides of the notch. However, it is not impossible to provide one auxiliary leg at the center of the edge of the front end of the notch, for example. If there is a notch, the battery 40 can be easily inserted and removed, but it is possible to insert and remove the battery 40 without the notch.

There may be no notch in the central portion of the rear end of the battery mounting portion 21f, and one auxiliary leg portion may be formed in the central portion of the rear end.
Further, the auxiliary leg portion may be provided not only in the central portion but also may have a shape extending long to the left and right.
By doing so, even if the width of the holder portion 21h in the left-right direction is small, the sitting in the left-right direction is stable when the vacuum cleaner main body 10 is placed on the floor surface FL as shown in FIG.
Even when the vacuum cleaner main body 10 has a pair of left and right auxiliary legs 26L and 26R, the left and right distances may be larger than those in the first embodiment. By separating the left and right auxiliary legs 26L and 26R, the sitting in the left-right direction becomes stable.
Further, the auxiliary legs may have a plurality of pairs as well as a pair of left and right legs.
Alternatively, the vacuum cleaner main body 10 may have a pair of left and right holder portions 21h. In that case, only one auxiliary leg may be arranged in the central portion.

As mentioned above
(I) In the vacuum cleaner according to the present invention, the rear end of the straight tubular extension pipe to which the suction port is connected to the front end is connected to the front, and the vacuum cleaner body to be grasped and used by the user and the extension pipe are aligned. A user-detachable battery mounted below the rear end of the vacuum cleaner body and exposing the rear end in the vertical direction orthogonal to the front-rear direction, and a main leg provided on the vacuum cleaner body and whose tip is located at the lowermost end thereof. The auxiliary leg portion is provided with a portion and an auxiliary leg portion provided on the vacuum cleaner main body behind the main leg portion, and the auxiliary leg portion is used when the vacuum cleaner main body to which the extension pipe is not connected is placed on a flat floor surface. It is characterized in that the vacuum cleaner main body is supported so as to be in contact with the floor surface together with the main leg portion and the rear end portion of the battery is located above the floor surface.

In the present invention, the vacuum cleaner main body is used with an extension pipe connected to the front, but it can also be used in a state where the extension pipe is not connected. In either case, the user holds the vacuum cleaner body and uses it.
The front-rear direction of the vacuum cleaner body is the direction along the connected straight tubular extension pipe, and the side to which the suction port is connected is the front. The vacuum cleaner body may be used at an angle, but in this specification, the front-rear direction is based on the direction of the extension pipe to be connected. The vertical direction is a direction orthogonal to the front-rear direction, and the left-right direction is a direction orthogonal to both the front-rear direction and the vertical direction.

In addition, the battery can be attached to and detached from the vacuum cleaner body by the user, and is attached below the rear end of the vacuum cleaner body. When installed, the rear end of the battery is exposed from the vacuum cleaner body.
Furthermore, the main landing gear and the auxiliary landing gear are provided on the vacuum cleaner body. The holder portion in the above-described embodiment corresponds to the main landing gear portion of the present invention.

Since the tip of the main landing gear is located at the lowermost end of the vacuum cleaner body, the vacuum cleaner body is placed on a flat floor regardless of whether the suction port and the extension pipe are connected to or not connected to the vacuum cleaner body. If this happens, support the vacuum cleaner body on the floor.
On the other hand, since the auxiliary landing gear is provided behind the main landing gear and the tip is not located at the lowermost end of the vacuum cleaner body, for example, the suction port and the extension pipe are connected to the vacuum cleaner body and the vacuum cleaner body leans forward. If it is placed on the floor in this state, it may not come into contact with the floor.

Further, preferred embodiments of the present invention will be described.
(Ii) In the left-right direction orthogonal to both the front-rear direction and the up-down direction, the main leg portion is arranged at the left and right center portions of the vacuum cleaner main body, and the auxiliary leg portion is left and right with respect to the center portion. At least one pair may be arranged.
In this way, since the pair of left and right auxiliary legs are arranged, the vacuum cleaner main body placed on the floor can be stably supported in the left-right direction.

(Iii) The auxiliary leg may be integrally formed with the exterior of the vacuum cleaner main body.
In this way, a robust auxiliary leg can be formed with a simple structure.

(Iv) The auxiliary leg may be made of a flexible member.
In this way, the vacuum cleaner main body can be supported without damaging the floor surface or the like in contact with the auxiliary legs.

(V) The battery may have a power supply terminal, and the vacuum cleaner main body may further include a battery mounting portion on which the battery is mounted and a power receiving terminal that contacts the power supply terminal of the mounted battery.
In this way, when the vacuum cleaner body is placed on a flat floor surface, the main landing gear and auxiliary landing gear support the vacuum cleaner body so that the rear end of the battery does not touch the floor surface. It is possible to prevent stress from the floor surface from being applied to the power receiving terminal.

Preferred embodiments of the present invention include a combination of any of the plurality of embodiments described above.
In addition to the embodiments described above, there may be various variations of the present invention. These variations should not be construed as not belonging to the scope of the present invention. The present invention should include the meaning equivalent to the claims and all modifications within the said scope.

1: Cordless vacuum cleaner 10: Vacuum cleaner body 20: Drive device, 21: Housing, 21a: Electric blower storage, 21aa: Exhaust port, 21ab: Inflow port, 21b: Suction pipe part, 21ba: Intake port, 21bb : Outlet, 21c: Handle part, 21d: Operation switch part, 21f: Battery mounting part, 21fa: Battery insertion port, 21fd: Latch claw opening, 21fe: Button opening, 21fg: Guide groove, 21h: Holder Part, 22: Electric blower, 23: Control circuit board, 25: Lock mechanism part, 25a: Latch member, 25aa: Latch claw, 25b: Button, 25c: First urging member, 25d: Second urging member, 26L , 26R: Auxiliary leg, 27: Power receiving terminal 30: Dust collector, 31: Dust collector, 31a: Introduction, 32: Filter, 32a: Cup, 32b: Mesh inner cylinder, 32c: Filter body 40: Battery, 41: Battery housing, 41a: Convex guide, 41b: Concave, 41c: Latch part, 42: Cell, 43: Slit 50: Suction port body, 52: Brush, 52a: Brush rotating bearing 60: Extension pipe

Claims (5)

The rear end of the straight tubular extension pipe to which the suction port is connected to the front end is connected to the front, and the vacuum cleaner body that the user grasps and uses,
A user-detachable battery mounted below the rear end of the vacuum cleaner body and exposed at the rear end in a vertical direction orthogonal to the front-rear direction along the extension pipe.
A main landing gear provided on the vacuum cleaner body and having a tip located at the lowermost end thereof,
It is provided with an auxiliary landing gear provided on the vacuum cleaner body behind the main landing gear.
The auxiliary landing gear is in contact with the floor surface together with the main landing gear when the vacuum cleaner body to which the extension pipe is not connected is placed on a flat floor surface, and the rear end portion of the battery is located above the floor surface. An electric vacuum cleaner that supports the vacuum cleaner body. In the left-right direction orthogonal to both the front-rear direction and the up-down direction, the main leg portion is arranged at the left-right center portion of the vacuum cleaner main body, and the auxiliary leg portion is at least one pair left and right with respect to the center portion. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is arranged. The vacuum cleaner according to claim 1 or 2, wherein the auxiliary legs are integrally formed with the exterior of the vacuum cleaner body. The vacuum cleaner according to claim 1 or 2, wherein the auxiliary leg is made of a flexible member. The battery has a power supply terminal and
The vacuum cleaner main body includes a battery mounting portion on which the battery is mounted and a battery mounting portion.
The vacuum cleaner according to claim 1, further comprising a power receiving terminal that contacts the power feeding terminal of the mounted battery.