JP7045922B2 - Brush nozzle for vacuum cleaner and vacuum cleaner with it - Google Patents

Description

The present invention relates to a brush nozzle for a vacuum cleaner and a vacuum cleaner including the brush nozzle.

As a conventional vacuum cleaner, a vacuum cleaner body having wheels, a flexible hose having a downstream end connected to an insertion port of the vacuum cleaner body, and an upstream end of the flexible hose are provided. It is equipped with a connecting pipe and a hand handle, an extension pipe connected to the insertion port of the connection pipe, and a suction port body connected to the extension pipe, and a foldable brush part is provided near the insertion port of the connection pipe. Canister type vacuum cleaners have been known (for example, Patent Documents 1 and 2).

According to this vacuum cleaner, the extension tube is removed from the connecting pipe, the lock at the folded position is released, the brush part is raised in front of the insertion port of the connecting pipe, and the brush part is locked at the raised position. For example, it is possible to suck in dust and clean it while rubbing a narrow gap, a staircase, furniture, a shelf, etc. with a brush portion. The locking is performed by engaging the locking convex portion and the locking concave portion provided on the connecting pipe and the brush portion.

Japanese Unexamined Patent Publication No. 2005-185480 Japanese Unexamined Patent Publication No. 2012-71008

In the conventional vacuum cleaner, since the brush portion during use is locked at the raised position, the angle between the brush surface in contact with the surface to be cleaned of the brush portion and the connecting pipe is constant (for example, 45 °). Therefore, for example, when the brush portion is reciprocated in the depth direction when cleaning the upper surface of the shelf, the inclination angle of the connecting pipe with respect to the surface to be cleaned changes, that is, when the brush portion is moved from the front to the back, the inclination angle becomes smaller. There is a problem that the front part of the brush part rises, and when the brush part is moved from the back to the front, the inclination angle becomes large and the rear part of the brush part tends to rise, and the cleaning efficiency tends to decrease.
Also, for example, when removing dust adhering to furniture with the brush part while cleaning the floor surface with the suction port, remove the extension pipe from the connection pipe and connect the folded brush part to the connection pipe. A time-consuming two-step operation of raising it to the front of the insertion port was required.

The present invention has been made in view of such a problem, and is provided with a brush nozzle for an electric vacuum cleaner which can improve cleaning efficiency and can be used in a one-step operation. The purpose is to provide a vacuum cleaner.

Thus, according to the present invention, a nozzle body having a nozzle opening, a swing brush having a brush surface swingably attached in the vicinity of the nozzle mouth of the nozzle body and in contact with the surface to be cleaned, and the swing brush. Equipped with an urging member that urges in a predetermined direction,
A brush nozzle for an electric vacuum cleaner configured to urge the swinging brush with the urging member so that the brush surface is maintained at an angle with respect to the air flow direction in the nozzle body. Is provided.

Further, according to another aspect of the present invention, the vacuum cleaner main body, the extension pipe that can be connected to the vacuum cleaner main body, the brush nozzle that can be connected to the extension pipe, and the extension pipe that is inserted into the brush nozzle. A vacuum cleaner is provided with a suction port having a connection tube portion that can be connected to the vacuum cleaner.

The brush nozzle for the vacuum cleaner of the present invention is, for example, the suction port of the handheld vacuum cleaner, the tip of the extension tube of the stick-type vacuum cleaner, and the tip of the flexible hose of the canister-type vacuum cleaner. It can be fixedly or detachably attached to a part or the like.
The brush nozzle attached to the electric vacuum cleaner in this way urges the swinging brush with an urging member so that the brush surface is maintained at an angle with respect to the air flow direction in the nozzle body. Because of the structure, for example, when the brush nozzle is reciprocated in the depth direction when cleaning a narrow gap between furniture and a wall on the floor surface, the upper surface of furniture or a shelf, etc., the nozzle body is tilted with respect to the surface to be cleaned. Even if the angle changes, the swing brush swings with respect to the nozzle body so that the entire brush surface is always in contact with the surface to be cleaned. Therefore, if you move the brush nozzle from the front to the back, the front part of the brush nozzle will rise, and if you move the brush nozzle from the back to the front, the rear part of the brush nozzle will not rise easily, so cleaning efficiency can be improved. can.

It is a perspective view which shows Embodiment 1 of the electric vacuum cleaner provided with the brush nozzle of this invention. It is a partial cross-sectional view which shows the internal structure of the vacuum cleaner of FIG. It is a perspective view which shows the extension tube which has a brush nozzle in the electric vacuum cleaner of Embodiment 1. FIG. (A) which shows the extension tube of Embodiment 1 is a left side view, and (B) is a left side view in a state where a swing brush is swinging. The nozzle main body of the brush nozzle of the first embodiment is shown in (A) is a perspective view seen from the nozzle opening side, (B) is a left side view, and (C) is a perspective view seen from the connection opening side. The swing brush of the brush nozzle of Embodiment 1 is shown in (A) is a perspective view seen from diagonally above, and (B) is a perspective view seen from diagonally below. The terminal cover of the brush nozzle of the first embodiment is shown in FIG. 1A is a perspective view of the base end portion viewed from diagonally below, FIG. A perspective view seen from diagonally above, (D) is a perspective view of the right side surface viewed from diagonally below. It is a figure explaining the state in which the extension pipe is inclined, and (B) is the state where the extension pipe is raised at the time of cleaning the floor surface by the brush nozzle of Embodiment 1. FIG. It is a figure seen from the nozzle mouth side which shows the state which the terminal part cover in the brush nozzle of Embodiment 1 is raised. It is a left side sectional view which shows the state which the terminal part cover in the brush nozzle of Embodiment 1 was tilted down. It is a figure seen from the nozzle mouth side which shows the state which the terminal part cover in the brush nozzle of Embodiment 1 was tilted down. It is a perspective view which shows Embodiment 2 of the electric vacuum cleaner provided with the brush nozzle of this invention. It is a perspective view which shows Embodiment 3 of the electric vacuum cleaner provided with the brush nozzle of this invention. It is a perspective view which shows Embodiment 4 of the electric vacuum cleaner provided with the brush nozzle of this invention. It is a perspective view which shows the extension tube of the vacuum cleaner of Embodiment 5, (A) is an extended state, (B) is a shortened state. 15 (A) is an extension pipe, (A) is a rear view, (B) is a left side view, and (C) is a left side sectional view. FIG. 15A is a left side view showing a hooking member in the extension pipe of FIG. 15A, and FIG. 15B is a cross-sectional view taken along the line I-I of FIG. FIG. 17 shows a hooking member in FIG. 17, (A) is a perspective view, (B) is another perspective view, and (C) is still another perspective view. FIG. 16 (B) is a cross-sectional view taken along the line II-II of FIG. 16 (B). It is a perspective view which shows the brush nozzle of Embodiment 6. FIG. 20A is a left side view of the brush nozzle, and FIG. 20B is a left side view of the brush nozzle in a state where the swing brush is swung.

(Embodiment 1)
FIG. 1 is a perspective view showing the first embodiment of the vacuum cleaner provided with the brush nozzle of the present invention, and FIG. 2 is a partial cross-sectional view showing the internal structure of the vacuum cleaner of FIG. In the first embodiment, the case where the brush nozzle of the present invention is attached to the extension tube of the canister type vacuum cleaner is illustrated, but the attachment form of the brush nozzle of the present invention is not limited to the first embodiment and will be described later. It may be like the embodiment 2 to 4 to be performed.

As shown in FIGS. 1 and 2, the electric vacuum cleaner 1 of the first embodiment is a downstream base end connection portion 21 that is detachably connected to the vacuum cleaner main body 10 and the connection port 11a ₂ of the vacuum cleaner main body 10. The flexible hose portion 20 having the tip connection portion 22 on the upstream side, the handle portion 31 and the operation switch portion 32 connected to the tip connection portion 22 of the flexible hose portion 20, and the flexible hose portion 20. The extension pipe 40 having the downstream base end connection portion 41 and the upstream tip connection portion 42 detachably connected to the tip connection portion 22 of the above, and the extension pipe 40 detachably attached to the tip connection portion 42 of the extension pipe 40. It includes a brush nozzle 50 and a suction port 60 that is detachably connected to the tip connection portion 42 of the extension tube 40. The front-back, left-right, and up-down directions described in the present specification are based on the user in the usage state of the vacuum cleaner 1.

<Vacuum cleaner body>
The vacuum cleaner main body 10 is a collection of a drive device 11 having a housing 11a capable of traveling on a floor surface and an electric blower 11b housed in the housing 11a, and a collection that is detachably attached to the housing 11a of the drive device 11. Has a dust unit 12

In the drive device 11, a pair of left and right wheels 11c are provided at the rear portion of the housing 11a, front wheels 11d are provided on the lower surface of the front portion of the housing 11a, and the front wheels 11d are located at the right front position of the front wheels 11d on the lower surface of the housing 11a. A receiving portion 11e for accommodating the extension pipe 40 as a stand is provided, and a concave mounting portion 11a ₁ for detachably mounting the dust collecting unit 12 is provided on the upper surface side of the housing 11a. The receiving portion 11e is, for example, a rib formed in a T shape when viewed from the lower surface side of the housing 11a.

Further, in the housing 11a, the connection port 11a ₂ is provided at the lower part of the front end, the exhaust port 11a ₃ is provided at the rear end portion, and the mounting portion 11a ₁ is provided with an air discharge hole communicating with the connection port 11a ₂ . An air introduction hole (not shown) communicating with the exhaust port 11a and an air introduction hole (not shown) is provided, a handle 11a ₄ is provided at the upper part of the front end of the housing 11a, and the housing 11a and a plurality of legs 11a ₅ are provided. ing.

Further, inside the housing 11a, the connection port 11a ₂ and the air discharge hole (not shown) are used as the first ventilation path, and the exhaust port 11a and the air introduction hole (not shown) are the second ventilation path. The electric blower 11b in the second ventilation path is arranged, the circuit board 11f is provided on the downstream side of the electric blower 11b in the second ventilation path, and the circuit board 11f in the second ventilation path is provided. Also, a cord reel 11g for winding a power cord (not shown) is provided on the downstream side. Further, the connection port 11a ₂ of the housing 11a is provided with a female terminal portion electrically connected to the circuit board 11f via a lead wire (not shown).

The dust collecting unit 12 is a multi-cyclone type dust collecting device including a dust collecting cup portion 12a and a centrifugal separation unit 12b detachably attached to the dust collecting cup portion 12a.
In a state where the dust collecting unit 12 is mounted on the mounting portion 11a ₁ of the drive device 11, an air inlet (not shown) that can be airtightly connected to the air discharge hole (not shown) on the outer peripheral wall of the dust collecting cup 12a. Is provided, and the cover portion 12b ₄ described later of the centrifugal separation unit 12b is provided with an air discharge port (not shown) that can be airtightly connected to the air introduction hole (not shown).

The centrifuge unit 12b is detachably and airtly fitted into the first centrifuge portion 12b ₁ having a tubular mesh filter portion (not shown) arranged in the dust collection cup 12a and the opening of the dust collection cup 12a. A second centrifuge that is detachably coupled to the cup 12b ₂ that communicates with the first centrifuge 12b ₁ and the cup 12b ₂ that communicates with the cup 12b ₂ and has a plurality of centrifuges 12b ₃₁ . 12b ₃ and a cover portion 12b ₄ that covers the second centrifuge portion 12b ₃ so as to communicate with the second centrifuge portion 12b ₃ are provided.

According to the vacuum cleaner main body 10 configured in this way, the air containing dust sucked into the connection port 11a ₂ of the drive device 11 by driving the electric blower 11b passes through the first ventilation path to the dust collection unit. Air that flows into the dust collecting cup 12a from the air introduction hole (not shown) of 12 and is captured while swirling in the dust collecting cup 12a, and contains a second dust smaller than the first dust. Passes through the mesh filter section (not shown) of the first centrifugation section 12b ₁ and the cup section 12b ₂ and flows into each centrifugation tube 12b ₃₁ of the second centrifugation section 12b ₃ , and each centrifugal section 12b ₃₁ The air separated from the second dust passes through the cover portion 12b ₄ and flows into the second ventilation path through the air introduction hole (not shown) of the drive device 11 and is discharged to the outside from the exhaust port 11a ₃ . Will be done.

<Flexible hose part>
The flexible hose portion 20 has a hose main body 23 between the proximal end connecting portion 21 and the distal end connecting portion 22, and the hose main body 23 is integrally wound with a conductive wire coated with an insulating material in a spiral shape. It has been transformed.
Further, the base end connection portion 21 is provided with a male terminal portion (not shown) electrically connected to the conductive wire of the hose body 23, and the tip connection portion 22 is provided with an operation switch portion 32 and a conductive ring sliding portion. A female terminal portion (not shown) that is electrically connected to the conductive wire of the hose body 23 via the like is provided.

Further, the tip connecting portion 22 is provided with a foldable tip brush 22a so as to be swingable, and is detachably engaged with the locking recess 41b (see FIG. 3) of the proximal end connecting portion 41 of the extension pipe 40. A first locking portion 22b having a locking claw (not shown) is provided. By pressing the push button 22b ₁ of the first lock portion 22b, the locking claw is disengaged from the locking recess 41b and the lock is released.

<Extension tube>
FIG. 3 is a perspective view showing an extension tube having a brush nozzle in the vacuum cleaner of the first embodiment. 4A and 4B show the extension tube of the first embodiment, FIG. 4A is a left side view, and FIG. 4B is a left side view in a state where the swing brush is swung.
As shown in FIGS. 1 to 4, the extension tube 40 has a conductive wire coated with an insulating material inside, and has a male terminal portion 41a electrically connected to the conductive wire as a base end connecting portion. The tip connection portion 42 has a female terminal portion 42a (see FIG. 11) that is provided in 41 and is electrically connected to the conductive wire.
By inserting the proximal end connecting portion 41 of the extension pipe 40 into the distal end connecting portion 22 of the flexible hose portion 20 and connecting the extension pipe 40, the male terminal portion 42a of the proximal end connecting portion 41 becomes the female terminal portion of the distal end connecting portion 22. It fits into (not shown) and is electrically connected.

Further, in the base end connection portion 41 of the extension pipe 40, when the base end connection portion 41 is inserted into the tip end connection portion 22 of the flexible hose portion 20, the locking claw of the first lock portion 22b of the tip end connection portion 22 The locking recess 41b that can be engaged with and detached from (not shown) is provided, and a push button 43a of the unlocking mechanism portion 43, which will be described later, is provided.
The tip connecting portion 42 has a locking claw 42b ₁ and a push button 42b ₂ that are detachably engaged with a locking recess 62a (see FIG. 2) provided in the connecting pipe portion 62 of the suction port body 60. 2 The lock portion 42b is provided.

In a state where the base end connecting portion 41 of the extension pipe 40 is connected to the tip connecting portion 22 of the flexible hose portion 20, the male terminal portion 41a, the locking recess 41b, the female terminal portion 42a and the first The 2 lock portion 42b is arranged on the front surface of the extension pipe 40.
The lock release mechanism portion 43 is provided in the longitudinal direction between the male terminal portion 41a and the second lock portion 42b on the front surface of the extension tube 40, and the push button provided in the vicinity of the male terminal portion 41a. It has a 43a, an action piece 43c provided in the vicinity of the second lock portion 42b, and a connecting wire 43b for connecting the push button 43a and the working piece 43c, and the connecting wire 43b is covered with a cover 43d.

The locking claw 42b ₁ of the second locking portion 42b locked in the locking recess 62a of the connecting pipe portion 62 of the suction port body 60 presses the push button 42b ₂ of the second locking portion 42b to lock the locking recess 62a. The lock is released by disconnecting from the lock, but the lock can also be released by the unlock mechanism portion 43 near the handle 31. In this case, by pressing the push button 43a, the working piece 43c moves in the front-rear direction via the connecting wire 43b, and the locking claw 42b ₁ is disengaged from the locking recess 62a by the movement of the working piece 43c, and the lock is released. .. Therefore, by pressing the suction port body 60 with the foot and pulling the extension pipe 40 in a state where the second lock portion 42b is released by the lock release mechanism portion 43, the user can use the suction port from the extension pipe 40 while standing. The body 60 can be easily removed.

Further, the belt member 44 is attached closer to the tip connecting portion 42 than the intermediate portion in the longitudinal direction of the extension pipe 40, and the hook member 45 is provided on the rear surface side of the extension pipe 40 in the belt member 44.
The hooking member 45 is formed in a box shape having a slit 45a (see FIG. 3) that can be hooked from above to the T-shaped receiving portion 11e of the housing 11a.

<Suction port>
As shown in FIGS. 1 and 2, the suction port body 60 includes a suction port main body 61 having a suction port 61a, and the connection pipe portion 62 provided on the suction port main body 61 so as to be rotatable in the front-rear and left-right directions. A rotary brush 63 rotatably provided in the vicinity of the suction port 61a in the suction port main body 61, a rotary brush driving motor provided in the suction port main body 61, and a rotary force from the output shaft of the motor. A pulley, a belt, etc. (not shown) for transmitting to 63 are provided.

Further, when the connection pipe portion 62 is inserted into the tip connection portion 42 of the suction port body 40 and connected to the connection pipe portion 62 of the suction port body 60, the locking claw of the second lock portion 42b of the tip connection portion 42 is connected. The locking recess 62a for engaging and disengaging 42b ₁ is provided, and a male terminal portion (not shown) electrically connected to a motor (not shown) via a lead wire is provided. ..

<Brush nozzle>
5A and 5B show the nozzle body of the brush nozzle of the first embodiment, FIG. 5A is a perspective view seen from the nozzle opening side, FIG. 5B is a left side view, and FIG. 5C is a perspective view seen from the connection opening side. 6A and 6B show the swing brush of the brush nozzle of the first embodiment, FIG. 6A is a perspective view seen from diagonally above, and FIG. 6B is a perspective view seen from diagonally below. 7A and 7B show the terminal cover of the brush nozzle of the first embodiment, FIG. 7A is a perspective view of the base end portion viewed from diagonally below, and FIG. 7B is a perspective view of the tip portion viewed from diagonally above. ) Is a perspective view of the left side surface viewed from diagonally above, and (D) is a perspective view of the right side surface viewed from diagonally below.

As shown in FIGS. 3 to 7, the brush nozzle 50 has a tubular nozzle body 51 having a nozzle port 51b ₁ and a surface to be cleaned that is swingably attached in the vicinity of the nozzle port 51b ₁ of the nozzle body 51. A swing brush 52 having a brush surface 52 bf in contact with the swing brush 52, a pair of urging members 53 (see FIG. 5) for urging the swing brush 52 in a predetermined direction, and swingable provisions in the nozzle opening 51b ₁ . A terminal cover 54 and a terminal cover urging member (not shown) for urging the terminal cover 54 in a predetermined direction are provided. Here, the "brush surface 52bf" refers to a tip plane region in contact with the surface to be cleaned in a plurality of brush bristles 52b described later of the swing brush 52, and in the case of the first embodiment, the rear is open U-shaped. Refers to the tip plane region (see FIG. 6B). The tip plane region may be substantially U-shaped or V-shaped.

As shown in FIG. 4A, the brush nozzle 50 maintains a state in which the brush surface 52bf is inclined with respect to the air flow direction in the nozzle body 51, that is, the longitudinal direction (straight line L direction) of the nozzle body 51. That is, the swing brush 52 is moved by the urging member 53 so that the inclination angle θ of the brush surface 52bf with respect to the longitudinal direction (straight line L direction) of the nozzle body 51 is the lower limit set angle (for example, about 45 °). It is configured to be urged. Note that FIG. 4B shows an urging member so that the inclination angle θ of the brush surface 52bf with respect to the longitudinal direction (straight line L direction) of the nozzle body 51 is an upper limit setting angle (for example, about 80 °) larger than the lower limit setting angle. It shows a state in which the swing brush 52 is forcibly swung against the urging force of 53.
Hereinafter, each member will be specifically described.

[Nozzle body]
As shown in FIGS. 5A to 5C, the nozzle body 51 swings with the connecting pipe portion 51a having the connecting port 51a ₁ on the opposite side of the nozzle port 51b ₁ in the longitudinal direction (straight line L direction). A brush support portion 51b having a pair of shaft portions 51b ₂ and a nozzle opening 51b ₁ that swingably support the brush 52, and a brush base portion 51c provided along a part of the outer peripheral portion of the nozzle opening 51b ₁ . It has an auxiliary brush portion 51d provided on the brush base portion 51c.

In the connection pipe portion 51a, the connection port 51a ₁ is formed in a size and shape into which the tip connection portion 42 of the extension pipe 40 can be inserted without wobbling, and is inserted into the connection port 51a ₁ on the upper surface of the connection pipe portion 51a. A notch 51a ₂ is provided so as not to interfere with the push button 42b ₂ of the second lock portion 42b of the tip connection portion 42 and to expose the push button 42b ₂ to the outside.

The brush support portion 51b communicating with the connecting pipe portion 51a has an arc-shaped curved upper surface and flat left and right side surfaces, and a pair of ridge-shaped sliding contact ribs 51b ₃ are provided on the upper surface and protrusions on the left and right side surfaces. The shaft portion 51b ₂ and the stopper rib 51b ₄ of the above are provided respectively.
Further, on the left and right side surfaces of the connecting pipe portion 51a, an annular recess 51b 5 for accommodating a torsion coil spring as a biasing member 53 described later is provided around each shaft portion 51b ₂ , and an annular recess 51b ₅ is provided in the upper portion near the nozzle port 51b1. A mounting hole 51b ₆ for mounting the terminal cover 54, which will be described later, is provided.

When the swing brush 52 swings (closes) until the inclination angle θ of the brush surface 52bf reaches the lower limit setting angle, the pair of sliding contact ribs 51b ₃ slides into contact with the inner surface of the brush base material 52a, which will be described later, to prevent contact. It is arranged along the upper end portion of the nozzle opening 51b ₁ so as to (see FIG. 4 (A)).
The pair of left and right shaft portions 51b ₂ are arranged on the same axis at the arc center position on the upper surface of the brush support portion 51b.
The pair of left and right stopper ribs 51b ₄ are arranged at positions where they come into contact with the end portion of the brush base material 52a, which will be described later, to stop the contact when the inclination angle θ of the brush surface 52bf of the swing brush 52 reaches the upper limit setting angle. See FIG. 4 (b)).

The brush base portion 51c is a thick U-shaped portion provided along the lower edge portion of the nozzle opening 51b ₁ , and is substantially parallel to the brush surface of the closed swing brush 52 (FIG. 4A). It has a brush bristle planting surface 51c ₁ and a plurality of brush bristle planting holes on the brush bristle planting surface 51c ₁ .
In the vicinity of the brush bristles planting surface 51c ₁ in the nozzle opening 51b ₁ , the inclination angle θ of the lower limit setting angle with respect to the longitudinal direction (straight line L direction) of the nozzle body 51 (FIGS. 4A and 5B). ), And the other parts of the nozzle opening 51b ₁ are opened so as to be inclined at a larger inclination angle.

The auxiliary brush portion 51d is composed of a plurality of brush bristles 51d ₁ implanted in a plurality of brush bristles planting holes of the brush base portion 51c, and each brush bristles 51d ₁ is in the longitudinal direction (straight line L direction) of the nozzle body 51. ) And it extends almost in parallel.

[Swing brush]
As shown in FIGS. 6A and 6B, the swing brush 52 has a brush base portion 51c on the outer peripheral portion of the nozzle opening 51b ₁ of the nozzle body 51, that is, the outer peripheral portion of the nozzle opening 51b ₁ . It has a brush base material 52a formed in a U shape mainly along a portion to be removed, and a plurality of brush bristles 52b planted on the brush base material 52a.

The brush base material 52a is a cover portion provided along a surface opposite to the brush base portion 52a ₁ having the U-shaped brush bristles planting surface 52a ₁₁ and the brush bristles planting surface 52a ₁₁ of the brush base portion 52a ₁ . It has a 52a ₂ and a pair of pivoting portions 52a ₃ provided on the inner surfaces of both ends of the U-shape of the cover portion 52a ₂ and pivotally attached to the pair of shaft portions 51b ₂ of the nozzle body 51. A plurality of brush bristles planting holes are formed on the brush bristles planting surface 52a ₁₁ .

In the case of the first embodiment, the pair of shaft portions 51b ₂ of the nozzle body 51 is cylindrical, and the pair of pivoting portions 52a ₃ of the swing brush 52 can rotate in the pair of shaft portions 51b ₂ without wobbling. It is formed in the shape of a cylinder to be inserted. Further, an annular recess 52a ₂₁ for accommodating a torsion coil spring as a urging member 53, which will be described later, is provided around each pivoting portion 52a ₃ on the inner surface of both ends of the cover portion 52a ₂ .

The plurality of brush bristles 52b are respectively implanted in the plurality of brush bristles planting holes of the brush bristles planting surface 52a ₁₁ of the brush base material 52a, and the inclination angle θ of the brush surface 52bf is the lower limit setting angle (FIG. 4). (A)), each brush bristles 52b of the swing brush 52 extends substantially parallel to the longitudinal direction (straight line L direction) of the nozzle body 51. At this time, the tip of the auxiliary brush portion 51d of the nozzle body 51 is also aligned with the position of the brush surface 52bf.

[Bending member]
As shown in FIG. 5, the urging member 53 is composed of a torsion coil spring, and when the swing brush 52 is assembled to the nozzle body 51, a pair of shaft portions 51b ₂ of the nozzle body 51 are passed through the ring portions of each torsion coil spring. Assemble the swing brush 52 in this state. At this time, the bent both ends of each torsion coil spring are hooked on a part of the annular recess 51b ₅ of the nozzle body 51 and a part of the annular recess 52a ₂₁ of the swing brush 52. As a result, the swing brush 52 is attached to the nozzle body 51 by each torsion coil spring (each urging member 53) in the direction in which the tilt angle θ of the brush surface 52bf is the lower limit setting angle (direction in which the swing brush 52 closes). It is being pushed (Fig. 4 (A)).
The part of the annular recess 51b ₅ and the part of the annular recess 52a ₂₁ may be any portion where the bent end portions of the torsion coil spring such as holes, recesses, and ribs are hooked. Further, the torsion coil spring as the urging member 53 may be provided on only one side.

[Terminal cover and urging member for terminal cover]
As shown in FIGS. 7A to 7D, the terminal cover 54 has a concave curved surface portion 54a provided on one side and a convex curved surface smoothness provided on the other side opposite to the one side. It has a surface portion 54b and a shaft portion 54c provided on the same axis on the front end side of the left and right side surfaces.

More specifically, a plate-shaped guide surface portion 54d inclined with respect to the longitudinal direction of the concave curved surface portion 54a is provided on the front end portion side of the concave curved surface portion 54a, and guide surface portions are provided on the left and right end portions of the concave curved surface portion 54a. A plate-shaped eaves 54e connected to 54d is provided, a plate-shaped left side surface portion 54f is provided in the longitudinal direction on the left end side of the smooth surface portion 54b, and a plate is provided along the right end portion of the right side eaves portion 54e. A right side surface portion 54g is provided, and ribs 54h in the left-right direction are provided at positions between the pair of shaft portions 54c on the smooth surface portion 54b. The pair of shaft portions 54c are arranged on the outer surface of the left side surface portion 54f and the outer surface of the right side surface portion 54g.
According to the terminal portion cover 54 configured in this way, the rear end portion side of the smooth surface portion 54b on the back surface of the concave curved surface portion 54a is a smooth surface without a step.

The urging member for the terminal cover (not shown) is composed of a torsion coil spring.
When the terminal cover 54 is mounted inside the nozzle body 51, the pair of shafts 54c are fitted into the pair of mounting holes 51b ₆ of the nozzle body 51 with the shaft 54c on the eaves 54e side passed through the ring portion of the twisted coil spring. Include.

<Usage condition of vacuum cleaner>
8A and 8B are views for explaining a state in which the extension pipe is tilted in FIG. 8A and a state in which the extension pipe is raised when the floor surface is cleaned by the brush nozzle of the first embodiment. Further, FIG. 9 is a view seen from the nozzle opening side showing a state in which the terminal cover of the brush nozzle of the first embodiment is raised, and FIG. 10 is a state in which the terminal cover of the brush nozzle of the first embodiment is tilted. It is a cross-sectional view on the left side, and FIG. 11 is a view seen from the nozzle mouth side showing a state in which the terminal cover of the brush nozzle of the first embodiment is tilted.

In the form of the vacuum cleaner 1 shown in FIGS. 1 and 2, since the connection pipe portion 62 of the suction port body 60 is connected to the tip connection portion 42 of the extension pipe 40, the suction port body 60 is placed on the floor surface. It can be cleaned while running.
Further, when cleaning the floor surface, for example, when cleaning a narrow gap between the wall and furniture on the floor surface, the suction port 60 is removed from the extension pipe 40 and attached to the tip connection portion 42 of the extension pipe 40. Insert the brush nozzle 50 in the gap and move it back and forth. At this time, when the brush nozzle 50 is moved from the front to the back (front) of the gap, the extension pipe 40 tilts at an angle close to 45 ° with respect to the floor surface F and swings as shown in FIG. 8 (A). The brush surface 52bf and the auxiliary brush 51d of the brush 52 slide on the floor surface F to remove dust, and the removed dust can be sucked into the nozzle opening 51b ₁ and removed.

Further, when the brush nozzle 50 is moved from the back of the gap to the front (rear), the extension pipe 40 rises to an angle close to 90 ° with respect to the floor surface F as shown in FIG. 8 (B), but the nozzle body 51 On the other hand, since the oscillating brush 52 oscillates in the opening direction against the urging force of the urging member 53, the brush surface 52bf of the oscillating brush 52 remains on the floor even if the auxiliary brush 51d slightly rises from the floor surface F. The dust can be removed without leaving the surface F, and the removed dust can be sucked into the nozzle port 51b ₁ and removed. When the brush nozzle 50 is moved from the front to the back again, the oscillating brush 52 naturally oscillates in the closing direction due to the urging force of the urging member 53 (see FIG. 8A). The angle at which the extension tube 40 rises may exceed 90 °.

When cleaning the floor surface F with the brush nozzle 50 in this way, the terminal cover 54 provided in the nozzle opening 51b ₁ is in a direction of rising by an urging member (twisting coil spring) for the terminal cover (not shown). Since it is urged, the female terminal portion 42a (see FIG. 11) provided in the tip connection portion 42 of the extension tube 40 is seen to be covered from the outside by the terminal portion cover 54 raised as shown in FIG. do not have. Therefore, the dust sucked into the nozzle port 51b ₁ adheres to the female terminal portion 42a, whereby the male terminal portion on the suction port 60 side when the suction port 60 is reconnected to the extension pipe 40 (not shown). ) And the female terminal portion 42a on the extension tube 40 side.

When connecting the suction port body 60 to the extension pipe 40, the connection pipe portion 62 of the suction port body 60 is inserted into the nozzle port 51b ₁ of the nozzle brush 50. At this time, the connection pipe portion 62 hits the terminal portion cover 54, but the tip portion of the connection pipe portion 62 is guided from the guide surface portion 54d of the terminal portion cover 54 to the concave curved surface portion 54a, and the terminal portion cover 54 raised accordingly It swings in the direction of falling against the urging force of the terminal cover urging member (FIGS. 10 and 11). Further, when the terminal cover 54 is tilted, the female terminal portion 42a on the tip connection portion 42 side of the extension pipe 40 faces the male terminal portion (not shown) on the connection pipe portion 62 side of the suction port body 60. These are electrically connected.

Although the shaking brush 50 is shown in the open state in FIGS. 10 and 11, the terminal cover 54 is shown even when the swing brush 50 is closed (FIGS. 4A and 9). Can fall down and connect the suction port 60 to the extension pipe 40.
Further, since the smooth surface portion 54b (FIG. 7 (B)) on the back side of the terminal portion cover 54 has a smooth surface having no step on the rear end portion side, dust collects on the smooth surface portion 54b, and the accumulated dust scatters and extends. It is possible to prevent the problem of adhering to the female terminal portion 42a of the tube 40.

Further, according to the vacuum cleaner 1 of the first embodiment, as shown in FIGS. 1 and 2, the vacuum cleaner main body 10 is erected by the three leg portions 10a ₅ and is provided on the receiving portion 11e provided on the vacuum cleaner main body 10. By hooking the hooking member 45 of the extension pipe 40, the vacuum cleaner 1 can be stored in a narrow space so that the extension pipe 40 and the flexible hose portion 20 do not get in the way.
Further, since the protruding dimension of the brush nozzle 50 toward the vacuum cleaner main body 10 is kept small, the hooking member 45 can be made compact. Therefore, even if the suction port 60 is stored in a stand with the extension pipe 40 removed, the brush nozzle 50 floating from the floor surface F can be stabilized. That is, when the hook member 45 becomes large, the gap between the extension pipe 40 and the vacuum cleaner main body 10 becomes wide, and the brush nozzle 50 wobbles when the stand is stored, which makes it difficult to stabilize. However, in the present invention, such a problem. Has been resolved.

(Embodiment 2)
FIG. 12 is a perspective view showing the second embodiment of the vacuum cleaner provided with the brush nozzle of the present invention.
In the canister type vacuum cleaner 1 of the first embodiment, the case where the brush nozzle 50 is attached to the tip connection portion 42 of the extension pipe 40 is illustrated, but as shown in FIG. 12, the flexible hose portion of the canister type vacuum cleaner 101 is illustrated. The brush nozzle 50 may be attached to the tip connection portion 122 of the 120, and the extension tube 140 inserted into the brush nozzle 50 may be connected to the tip connection portion 122 of the flexible hose portion 120.
According to the electric vacuum cleaner 101 of the second embodiment, by removing the extension pipe 140 from the flexible hose portion 120, dust adhering to stairs, furniture, shelves, etc. with the brush nozzle 50 while holding the vacuum cleaner main body 110 Can be suction-cleaned to remove.
Further, the brush nozzle 50 is removed from the tip connection portion 122 of the flexible hose portion 120, the suction port body 160 is removed from the extension tube 140, and the brush nozzle 50 is attached to the tip connection portion 142 of the extension tube 140 as in the first embodiment. May be configured to be replaceable.

(Embodiment 3)
FIG. 13 is a perspective view showing the third embodiment of the vacuum cleaner provided with the brush nozzle of the present invention. In FIG. 13, the same elements as those in FIG. 1 are designated by the same reference numerals.
The third embodiment is a stick-type vacuum cleaner 201, which is a vacuum cleaner main body 210 having a drive device 211, a dust collecting unit 212 detachable from the drive device 211, and a battery 213, and an extension used in the vacuum cleaner 1 of the first embodiment. It includes a tube 40, a brush nozzle 50, and a suction port 60.
That is, the extension pipe 40, the brush nozzle 50, and the suction port 60 of the canister type vacuum cleaner 1 of the first embodiment can be replaced with the tip connection portion 211a of the vacuum cleaner main body 210 of the stick type vacuum cleaner 201 of the second embodiment. It is supposed to be.
Such a stick-type vacuum cleaner 201 can also perform both cleaning of a wide floor surface by the suction port 60 and cleaning of a gap portion by a brush nozzle 50.

(Embodiment 4)
FIG. 14 is a perspective view showing the fourth embodiment of the vacuum cleaner provided with the brush nozzle of the present invention. In FIG. 14, the same elements as those in FIG. 13 are designated by the same reference numerals.
The fourth embodiment is a handheld vacuum cleaner 301, which is a vacuum cleaner main body 310 having a drive device 311 and a dust collecting unit 312 detachably attached to the drive device 311 and a battery (not shown), and a vacuum cleaner main body 310. It is provided with a brush nozzle 50 attached to the tip suction port 311a.
According to such a handheld vacuum cleaner 301, it is suitable for suction cleaning of dust adhering to stairs, furniture, shelves, etc., cleaning of the inside of a vehicle, and the like.
The extension pipe 40 connected to the suction port body 60 used in the third embodiment is inserted into the brush nozzle 50 of the handheld vacuum cleaner 301, and the extension pipe 40 is connected to the tip suction port 311a of the drive device 311. For example, it can be used as a stick-type vacuum cleaner.

(Embodiment 5)
15A and 15B are perspective views showing an extension pipe of the vacuum cleaner of the fifth embodiment, in which FIG. 15A is an extended state and FIG. 15B is a shortened state. 16 is an extension pipe of FIG. 15A, FIG. 16A is a rear view, FIG. 16B is a left side view, and FIG. 16C is a left sectional view.
The extendable extension tube 240 has an outer cylinder portion 240a and an inner cylinder portion 240b slidably inserted into the outer cylinder portion 240a, and is a hook member described later on the tip connection portion 240by side of the inner cylinder portion 240b. 145 is attached.

The outer cylinder portion 240a includes an outer cylinder main body 240a ₁ , a cover member 240a ₂ provided on the front surface of the outer cylinder main body 240a ₁ along the longitudinal direction, and a conductor housed in the cover member 240a ₂ (not shown). A male terminal portion 240a ₃ electrically connected to the conductor and exposed at the base end connection portion 240ax of the outer cylinder main body 240a ₁ , and a short cylinder provided at the tip connection portion 240ay of the outer cylinder main body 240a ₁ . It is provided with a locking mechanism portion 240a ₄ of the shape and a locking recess 240a ₅ provided in the base end connecting portion 240ax of the outer cylinder main body 240a ₁ .

The locking mechanism portion 240a ₄ includes a push button 240a ₄₁ provided on the front side, a compression spring 240a ₄₂ for urging the push button 240a ₄₁ outward, and a locking provided on the opposite side of the push button 240a ₄₁ . It has a protrusion 240a ₄₃ .
The male terminal portion 240a ₃ and the locking recess 240a ₅ of the outer cylinder portion 240a play the same role as the male terminal portion 41a and the locking recess 41b in the extension pipe 40 described in the first embodiment. ..

The inner cylinder portion 240b can be slidably contacted with the inner cylinder main body 240b ₁ , the cover member 240b ₂ provided on the front surface of the inner cylinder main body 240b ₁ along the longitudinal direction, and the conductor (not shown) of the outer cylinder body 240a. A conductor (not shown) housed in the cover member 240b ₂ and a female terminal portion 240b ₃ that is electrically connected to the conductor and is exposed at the tip connection portion 240by of the inner cylinder main body 240b ₁ . It is provided with a lock portion 240b ₄ provided at the tip connection portion 240by of the cylinder body 240b ₁ .
The female terminal portion 240b ₃ and the lock portion 240b ₄ of the inner cylinder portion 240b play the same roles as the male terminal portion 42a and the second lock portion 42b in the extension tube 40 described in the first embodiment. ..

Further, on the rear surface of the inner cylinder main body 240b ₁ , three types of first to third recesses 240b ₁₁ , 240b ₁₂ , and 240b ₁₃ are arranged in this order toward the tip connection portion 240by.
The first concave portion 240b ₁₁ is a concave portion that is detachably engaged with the locking convex portion 240a ₄₃ of the locking mechanism portion 240a ₄ provided on the rear surface side of the outer cylinder main body 240a ₁ , and one recess is provided at each position. It is provided.
The third recess 240b ₁₃ is a recess that is detachably engaged with a pair of positioning protrusions 145d of the hooking member 145, which will be described later, and is provided at each position with two recesses 240b 13.

According to this extension tube 240, by pressing the push button 240a ₄₁ of the locking mechanism portion 240a ₄ of the outer cylinder portion 240a, the locking convex portion 240a ₄₃ of the locking mechanism portion 240a ₄ becomes the first of the inner cylinder portion 240b. Since it is separated from the concave portion 240b ₁₁ , the outer cylinder portion 240a and the inner cylinder portion 240b can slide with each other in this state, and the extension pipe is changed by changing the first concave portion 240b ₁₁ to be locked to the locking convex portion 240a ₄₃ . The length of 240 can be adjusted in multiple steps.

17A and 17B show a hooking member in the extension pipe of FIG. 15A, FIG. 17A is a left side view, and FIG. 17B is a cross-sectional view taken along the line I-I of FIG. 18A is a perspective view showing the hooking member of FIG. 17, FIG. 18B is another perspective view, and FIG. 18C is still another perspective view. Further, FIG. 19 is a cross-sectional view taken along the line II-II of FIG. 16 (B).
The hook member 145 attached to the extension pipe 240 of the fifth embodiment can be positioned by using the third recess 240b ₁₃ of the inner cylinder portion 240b, and has a cylinder portion 240a having a notch 240a ₁ in the longitudinal direction and a cylinder portion. A pair of block portions 240b having bolt insertion holes connected to both sides of the notch 240a ₁ on the outer surface of the 240a, and a hook member 45 connected to one block portion 240b and described in the first embodiment have the same configuration. It has a hooking portion 145c and the pair of positioning convex portions 145d provided on both sides of the notch 240a ₁ on the inner surface of the tubular portion 240a.

Since the hook member 145 is an integrally molded part made of resin, the tubular portion 240a is elastically deformable. Therefore, the opening of the notch 240a ₁ of the hooking member 145 is greatly widened to fit the inner cylinder main body 240b ₁ , the pair of positioning convex portions 145d are locked to the second concave portion 240b ₁₂ at a desired position, and the pair of block portions 240b. The hooking member 145 can be positioned and fixed at a desired position of the inner cylinder main body 240b ₁ by passing a bolt (not shown) through the bolt insertion hole of the above and tightening it with a nut (not shown).

In the fifth embodiment, a case where the hook member 145 is fixed to the tip connection portion 240by side of the inner cylinder main body 240b ₁ is illustrated. In this case, the suction port body 60 is mounted on the floor surface as described with reference to FIGS. 1 and 2. By hooking the hooking member 145 on the receiving portion 11e of the vacuum cleaner main body 10 in the state of being placed on the F, the extension pipe 240 can be erected and the vacuum cleaner can be stored. In this case as well, the brush nozzle 50 may be attached to the tip connection portion 240by of the extension tube 240 as in the first embodiment.

Further, according to the configuration of the extension tube 240 and the hooking member 145 of the fifth embodiment, the length of the tubular portion 240a of the hooking member 145 and the sizes of the first to third recesses 240b ₁₁ , 240b ₁₂ , 240b ₁₃ of the extension tube 240. By changing the fixing position of the hooking member 145 to the extension pipe 145 by changing the interval, etc., even if the height position of the receiving portion 11e changes depending on the model of the vacuum cleaner, the common hooking member 145 can be used. can do. As a result, it is not necessary to prepare a mold for each model and adjust the position of the hooking member, and the investment in the mold can be suppressed.

(Embodiment 6)
FIG. 20 is a perspective view showing the brush nozzle of the sixth embodiment. 21 is a left side view of the brush nozzle of FIG. 20, where FIG. 20A is a left side view, and FIG. 21B is a left side view of the brush nozzle in a state where the swing brush is swung. In FIGS. 20 and 21, the same elements as those in FIGS. 4 to 8 are designated by the same reference numerals.
In the brush nozzle 50 of the first embodiment, stopper ribs 51b ₄ are provided on the left and right side surfaces of the nozzle body 51 (see FIGS. 4 and 5), but in the brush nozzle 150 of the sixth embodiment, the stopper ribs 151b are provided on the left and right side surfaces of the nozzle body 151. ₄ is provided, and a non-slip rib 151b ₅ is provided adjacent to the stopper rib 151b ₄ . In the sixth embodiment, other configurations are the same as those in the first embodiment.

According to the brush nozzle 150 of the sixth embodiment, the non-slip ribs 151b ₅ are provided on the left and right side surfaces of the nozzle body 151, so that when the user removes the brush nozzle 150 from the extension tube 40, the left and right non-slip ribs 151b are provided. By pulling it toward you while hitting ₅ , the brush nozzle 150 can be easily pulled out from the extension tube 40 without slipping the finger.

(Other embodiments)
1. 1. In the vacuum cleaners of the first to fourth embodiments, if the brush nozzle 50 can be attached to and detached from the tip connection portion 42 of the extension tube 40, the tip connection portion 122 of the flexible hose portion 120, and the tip suction port 311a of the drive device 311. It is convenient because the usage pattern of the brush nozzle 50 can be changed according to the cleaning location, but the brush nozzle may be fixedly attached to a plurality of connection locations in the vacuum cleaner.

2. 2. In the brush nozzles 50 of the first to fourth embodiments, a case where a torsion coil spring is used as the urging member 53 for urging the swing brush 52 and the urging member for the terminal cover 54 for urging the terminal cover 54 has been exemplified. The spring is not limited to the torsion coil spring, and for example, an elongated leaf spring may be curved in a ring shape and used.

3. 3. In the first to third embodiments, an electric vacuum cleaner provided with a suction port having a rotating brush rotated by a motor is exemplified, but the rotating brush of the suction port may be rotated by a turbine, or a rotating brush may be used. May be omitted. In these cases, the terminal cover and the terminal cover urging member provided on the brush nozzle 50 can be omitted.

(summary)
The brush nozzle for an electric vacuum cleaner of the present invention includes a nozzle body having a nozzle opening, a swinging brush having a brush surface that is swingably attached in the vicinity of the nozzle mouth of the nozzle body and is in contact with a surface to be cleaned. A urging member for urging the swing brush in a predetermined direction is provided.
The swinging brush is configured to be urged by the urging member so that the brush surface is maintained at an angle with respect to the air flow direction in the nozzle body.

The brush nozzle for the electric vacuum cleaner of the present invention may be configured as follows, or may be combined as appropriate.
(1) The nozzle body has a connection port on the side opposite to the nozzle port.
The connection port can be connected to the tip suction port of the vacuum cleaner body of the vacuum cleaner or one of the attachments attached to the vacuum cleaner.
The nozzle port allows the other accessory connection tool to be inserted when the tip suction port connected to the connection port or the one connection tool is connected to another accessory connection tool for a vacuum cleaner. Is also good.

According to this configuration, the following effects are obtained.
(I) The brush nozzle of the present invention can be fixedly or detachably connected to the suction port of the handheld vacuum cleaner. In this case, for example, a brush nozzle connected to a handheld vacuum cleaner can be used for suction cleaning of dust adhering to stairs, furniture, the upper surface of shelves, and the like.
It is also possible to use this handheld vacuum cleaner as a stick-type vacuum cleaner. In this case, the base end of the extension tube as the other connector for the vacuum cleaner is inserted into the nozzle port of the brush nozzle connected to the suction port of the handheld vacuum cleaner to connect to the suction port and extend. By connecting the connecting pipe portion of the suction port to the tip end portion of the pipe, it can be used as a stick-type vacuum cleaner that sucks and cleans a wide floor surface. Furthermore, the brush nozzle can be returned to a usable state without hassle by a one-step operation of pulling out the extension tube from the suction port of the handheld vacuum cleaner.

(II) The brush nozzle of the present invention can be fixedly or detachably connected to the extension tube of the stick-type vacuum cleaner as the one connector. In this case, for example, a brush nozzle connected to the tip of an extension tube of a stick-type vacuum cleaner can be used for suction cleaning of dust accumulated in a narrow gap between a wall and furniture on the floor surface.
Further, by inserting the connecting pipe portion of the suction port body as the other connecting tool into the nozzle port of the brush nozzle connected to the tip portion of the extension pipe and connecting to the extension pipe, the stick type vacuum cleaner can be used widely. The floor surface can be sucked and cleaned. Furthermore, the brush nozzle can be returned to a usable state without hassle by a one-step operation of pulling out the suction port from the extension tube of the stick-type vacuum cleaner.

(III) The brush nozzle of the present invention can be fixedly or detachably connected to the flexible hose as the one connector of the canister type vacuum cleaner. In this case, for example, a brush nozzle connected to a canister type vacuum cleaner can be used for suction cleaning of dust adhering to stairs, furniture, the upper surface of shelves, and the like.
Further, the base end portion of the extension tube as the other connecting tool is inserted into the nozzle opening of the brush nozzle connected to the tip end portion of the flexible hose to connect to the flexible hose, and to the tip end portion of the extension tube. By connecting the connection pipe portion of the suction port body, a wide floor surface can be suction-cleaned with a canister type vacuum cleaner. Further, the brush nozzle can be returned to a usable state without hassle by a one-step operation of pulling out the extension tube from the flexible hose of the canister type vacuum cleaner.

(2) The nozzle body includes a connection tube portion having the connection port, a pair of shaft portions that swingably support the swing brush, a brush support portion having the nozzle port, and an outer peripheral portion of the nozzle port. It has a brush base portion provided along a part of the brush base portion and an auxiliary brush portion provided on the brush base portion.
The swing brush includes a brush base material having both ends formed in a substantially U shape along the other portion of the outer peripheral portion of the nozzle opening of the nozzle body and pivotally attached to the pair of shaft portions. It may have a plurality of brush bristles planted on the brush substrate.

According to this configuration, by providing the auxiliary brush portion in the nozzle body, a brush base material having a plurality of brush bristles can be formed in a U shape, whereby both ends of the brush base material can be formed from the nozzle body. Can also be prevented from protruding backwards. If the nozzle body does not have an auxiliary brush part, it is necessary to form the brush base material in an elliptical shape to surround the entire circumference of the nozzle opening. It will go around.
For example, in the case of a canister type vacuum cleaner that can store an extension tube as a stand, a hooking portion is provided at the rear (back surface) of the extension tube, and the hooking portion is hooked on a receiving portion provided on the vacuum cleaner body to store the extension tube. Generally, at this time, the hooking portion needs to be released to the outside of the swing locus of the swing brush so that the brush nozzle does not interfere with the vacuum cleaner body, but the swing locus of the swing brush as in the latter case. However, in a configuration in which the brush nozzle wraps around to the rear of the nozzle body, it is necessary to increase the protrusion dimension of the hooking portion to the rear, which causes a problem that the brush nozzle is difficult to stabilize when the extension tube is stored.
According to the present invention, since the dimension of the hooking portion protruding rearward can be suppressed to a small size, the extension tube of the vacuum cleaner can be stored in a stand with the brush nozzle stable.

(3) Further, a terminal cover attached to the inner surface of the nozzle opening of the nozzle body so as to be swingable, and a terminal cover urging member for urging the terminal cover in a rising direction are further provided.
The terminal cover may have a concave curved surface portion that is inserted into the nozzle opening of the nozzle body and receives the outer surface of the connecting pipe portion of the suction port body that is connected to the extension tube.

According to this configuration, for example, it is possible to correspond to a stick type or canister type vacuum cleaner having a suction port having a motor-driven rotating brush. That is, the suction port and the extension tube are provided with a lead wire and a terminal portion to supply power to the motor in the suction port, and the terminal portion of the extension tube connected to the brush nozzle is protected in the brush nozzle. A terminal cover is provided. That is, according to this terminal cover, when the suction port is removed from the extension tube connected to the brush nozzle and suction-cleaned by the brush nozzle, the dust sucked into the brush nozzle is collected by the terminal cover and the terminal portion of the extension tube. It can be prevented from adhering to.

(4) The terminal cover may have a smooth surface on the back of the concave curved surface.
According to this configuration, since the back surface of the concave curved surface portion of the terminal portion cover is a smooth surface portion, it is difficult for dust to collect, and it is possible to prevent dust from accumulating on the back surface of the concave curved surface portion and adhering to the terminal portion due to long-term use of the brush nozzle. ..

It should be noted that the disclosed embodiments are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1, 101, 201, 301 Vacuum cleaner 10, 110, 210, 310 Vacuum cleaner body 20, 120 Flexible hose part (connector)
40, 140 extension pipe (connector)
50 Brush nozzle 51 Nozzle body 51a Connection tube part 51a ₁ Connection port 51b Brush support part 51b ₁ Nozzle port 51b ₂ Shaft part 51c Brush base 51d Auxiliary brush part 52 Swing brush 52a Brush base material 52b Brush bristles 52bf Brush surface 53 Bouncer 54 Terminal cover 54a Concave curved surface 54b Smooth surface 60, 160 Suction port
62 Connection pipe 311a Tip suction port

Claims (5)

A nozzle body having a nozzle opening, a swing brush having a brush surface swingably attached in the vicinity of the nozzle port of the nozzle body and in contact with the surface to be cleaned, and an urging brush to urge the swing brush in a predetermined direction. Equipped with force members,
The swinging brush is configured to be urged by the urging member so that the brush surface is maintained at an angle with respect to the air flow direction in the nozzle body .
The nozzle body has a connection port on the side opposite to the nozzle port, and the nozzle body has a connection port.
The connection port can be connected to the tip suction port of the vacuum cleaner body of the vacuum cleaner or one of the attachments attached to the vacuum cleaner.
The nozzle body includes a connection tube portion having the connection port, a pair of shaft portions that swingably support the swing brush, a brush support portion having the nozzle port, and a part of an outer peripheral portion of the nozzle port. It has a brush base portion provided along the line and an auxiliary brush portion provided on the brush base portion.
The swing brush includes a brush base material having both ends formed in a substantially U shape along the other portion of the outer peripheral portion of the nozzle opening of the nozzle body and pivotally attached to the pair of shaft portions. With multiple brush bristles planted on the brush substrate,
The nozzle port can be inserted with the other accessory connection tool when the tip suction port connected to the connection port or the one connection tool is connected to the other accessory connection tool for the vacuum cleaner. ,
The swing brush maintains an open state of the nozzle opening to which the other accessory fitting can be connected to the nozzle opening when the other accessory fitting is removed from the nozzle opening. A featured brush nozzle for vacuum cleaners. The nozzle body can swing in a direction that approaches perpendicular to the surface to be cleaned against the urging force of the urging member in a state where the brush surface of the swing brush is in contact with the surface to be cleaned. The brush nozzle according to claim 1. Further, a terminal cover attached to the inner surface of the nozzle opening of the nozzle body so as to be swingable, and a terminal cover urging member for urging the terminal cover in a rising direction are further provided.
The brush according to claim 1 or 2 , wherein the terminal cover has a concave curved portion that receives an outer surface of a connecting pipe portion of a suction port body that is inserted into the nozzle opening of the nozzle body and is connected to an extension tube. nozzle. The brush nozzle according to claim 3 , wherein the terminal cover has a smooth surface on the back of the concave curved surface. The vacuum cleaner main body, an extension tube that can be connected to the vacuum cleaner main body, the brush nozzle according to any one of claims 1 to 4 that can be connected to the extension tube, and the extension tube that is inserted into the brush nozzle. Vacuum cleaner with a suction port having a connection tube that can be connected to.

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