JPH0662989A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide a vacuum cleaner excellent in operational efficiency and sucking performance yet with a reduction in cost. CONSTITUTION:The vacuum cleaner is characterized by a floor brush 7 provided with retaining parts 18a and 18b for retaining bearings 16a and 16b of a rotary brush 12 having a blade 14a and retaining parts 18a, 19a and 19b for retaining the bearings of a rotary brush having a wheel at each end of the blade 14a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner including a cleaner body, a hose, a hand pipe, an extension pipe, a floor brush and the like.

[0002]

2. Description of the Related Art FIG. 18 is a perspective view showing the overall structure of an electric vacuum cleaner. In the figure, 1 is a cleaner body with a built-in electric blower, 2 is a power cord, 3 is a hose made of an elastic material such as rubber, 4 is a hand pipe, 5 is an operation part provided on the hand pipe 4, and 6 is an extension. Pipe, 7 is a floor brush.

Next, the operation of the above electric vacuum cleaner will be described. After connecting the power cord 2 to the power source, hold the pipe 4 at hand, operate the operation unit 5 to drive the electric blower in the cleaner body 1, and remove the floor brush 7 fitted to the tip of the extension pipe 6. When sliding along the floor surface, the dust on the floor surface is sucked into the cleaner body 1 through the floor brush 7, the extension pipe 6, the hand pipe 4, and the hose 3 together with the air, and the cleaner body 1 It is designed to be collected by a paper bag-shaped dust collection filter installed inside the.

FIG. 19 is a perspective view of the floor brush 7. An elbow 10 is provided at the center of the rear side and is axially fixed so as to be vertically movable. The elbow 10 is connected to the extension pipe 6 through the elbow 10. At this time, as the elbow 10 moves up and down, the inclination angle of the floor brush 7 with respect to the extension pipe 6 is freely changed, so that the lower surface of the floor brush 7 is easily attached to the floor surface.

FIG. 20 is a bottom view of the inside of the floor brush 7, and a part thereof is shown in a sectional view. As shown in the drawing, the elbow 10 has a hollow rotating shaft 10 e inserted into a frame body provided in the case 8 at the rear center of the floor brush 7 and is vertically movably connected to the case 8. Reference numeral 10a is a cylindrical portion of the elbow 10, 10b is a pipe expanding portion which is fitted into the cylindrical portion, and 10c is a fitting portion which is connected to the extension pipe 6.

Reference numeral 12 denotes a rotary brush rotatably arranged in the suction port 11, reference numeral 20 denotes a belt, and reference numeral 21 denotes an electric motor. The belt 20 transmits the rotation of the electric motor 21 to the rotary brush 12. Reference numeral 22 is a control device for the electric motor 21, and 23 is a power supply unit for supplying power to the control device 22. The rotary brush 12 is equipped with a flocking brush in which a plurality of synthetic resin bristles 14 arranged in a row and fixed to a shaft 13 are arranged in a plurality of rows, and a bearing portion provided at both ends is provided. 16a and 16b are rotatably held by holding portions 18a and 18b provided on the case 8.

Next, this operation will be described. When the bottom surface of the floor brush 7 is brought into close contact with the floor surface and the operating portion 5 is operated, the electric vacuum cleaner body 1 is operated to absorb dust, and when the floor surface is covered with a carpet or the like, further A signal is sent from the operation unit 5 to the control device 22 through the power supply intake unit 23, the electric motor 21 is driven, and the rotation thereof is transmitted to the rotary brush 12 via the belt 20 and is rotated. In this way, it is also effective in cleaning carpets and the like.

In the floor brush 7 of the conventional electric vacuum cleaner as described above, when the floor brush 7 is operated to clean the floor, the floor brush 7 is pressed when pushed.
There was a problem that movement became heavy. Such a problem is particularly problematic in the case of a carpet with long hair.

Therefore, the inventors of the present invention, as shown in FIG. 21, have wheels 25a having a diameter larger than that of the shaft body 13 at both ends of the shaft body 13 of the rotary brush 12a and having an uneven portion on the outer periphery. 25b is provided, and the bearing portions 16a and 17 of the rotary brush 12a are rotatably held by the holding portions 18a, 19a and 19b, and a driving force is obtained when cleaning a carpet or the like, and an operation force required to move the floor brush 7 is provided. The invention was completed to reduce the above problem, and a patent application was filed as Japanese Patent Application No. 4-99617. In FIG. 21, 14a is a blade made of an elastic material such as rubber attached to the shaft body 13 instead of the flocked brush.

FIG. 22 shows a floor brush 7 without a rotary brush.
Is a bottom view of 8 is a case, 9 is a cover, 10 is an elbow,
Reference numeral 11 is a suction port. 26a and 26b are rear wheels provided on both sides of the elbow 10 at the rear of the lower surface, and 27a and 27b.
Are front wheels provided on both sides of the suction port 11 at the front part of the lower surface. The electric vacuum cleaner having the floor brush 7 as described above has the floor brush 7 with the rear wheels 26a and 26b and the front wheels 27a and 27b.
Roll to move on the floor and suck dust to clean it.

FIG. 24 is a perspective view of the floor brush, and 8 is a case and 10 is an elbow. When cleaning a carpet or the like with the floor brush 7, the suction force of air is softened and the floor brush 7 is used.
In order to suck dust and the like also from the front surface of the case 8, an opening portion 8a is provided in the front surface of the case 8, and the opening portion 8a is made of an elastic material such as rubber or ENVI. There is one in which a spatula 30 in which 32 is provided alternately is attached. The lower end of the hanging portion 31 is slightly above the lower surface of the floor brush 7 (for example, about 1 mm).
In such a floor brush 7, dust and the like on the lower surface of the floor brush 7 are sucked from the suction port, and dust and the like on the front surface of the floor brush 7 are sucked from the cut portion of the spatula 30.

FIG. 25 is an enlarged view of the hand pipe 4 shown in FIG. 18, 35 is a connecting portion of the hose 3, and 36 is an extension pipe 6.
And 37 is a grip. Although not shown, the operation unit 5 is provided near the grip portion 37.
In the vacuum cleaner equipped with the above hand pipe 4, as shown in FIG. 18, the grip 37 is grasped with one hand to operate the operation unit 5, and the floor brush 7 is moved to clean the floor surface or the like. Do.

[0013]

As shown in FIG. 20, the rotary brush provided on the floor brush 7 is provided with only the flocked brush 14 and the blade 14a, and as shown in FIG. Some of them have wheels 25a and 25b on both sides of the blade 14a, and both have different bearing portions 16a, 16b or 16a, 17 in structure. Therefore, these bearing portions 16a, 16b or 16
holding portions 18a, 18b or 18a for holding a, 17
Since the structures and positions of 19a and 19b are also different, holding portions 18a, 18b or 18 adapted to the respective bearing structures are provided.
The case 8 having a, 19a, 19b must be manufactured. As a result, the die for Case 8 has to be manufactured separately, which not only increases the cost but also makes inventory control and production control troublesome.

In addition, the floor brush 7 shown in FIG.
When the carpet 28 is moved by moving it in the direction of the arrow as shown in FIG. 2, the rear wheels 26a and 26b push down the carpet 26 because the hairs such as the carpet are standing in front of the rear wheels 26a and 26b. You have to move while. For this reason, a large amount of force was required for cleaning, and fatigue was great.

In the floor brush 7 having the spatula 30 shown in FIG. 24, since the vacuum degree of the suction port is not lowered,
There is a limit to making the cutouts 32 large or increasing the number thereof. Therefore, dust and the like on the front surface of the floor brush 7 cannot be efficiently sucked, and when the floor brush 7 is moved, the hanging portion 31 of the spatula 30 is caught on a carpet or the like and becomes heavy. was there.

Next, in the vacuum cleaner equipped with the hand pipe 4 as shown in FIG. 25, the grip 37 was easily removed from the hand during cleaning, and the operability was not so good.

The hand pipe 4 and the extension pipe 6 connected to the hand pipe 4 shown in FIG. 25 include a floor brush 7 without a rotary brush and a floor brush 7 with a rotary brush 12. If necessary, the latter may rotate, but in the latter case, the conductive wire connecting the operating part 5 of the hand pipe 4 and the power supply part of the floor brush 7 is connected. I won't. Therefore, since the two have different structures, the hand pipes 4 are manufactured separately. Therefore, the cost is increased and inventory management is troublesome.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to obtain an electric vacuum cleaner which is excellent in operability and suction performance and can be reduced in cost.

[0019]

An electric vacuum cleaner according to the present invention includes (1) a floor brush, a holding portion for holding a bearing portion of a rotary brush having blades, and a rotary having wheels on both sides of the blade. And a holding portion that holds the bearing portion of the brush. (2) The vertical height of the cross-shaped bearing portion of the rotary brush is 10% or more shorter than the horizontal length. (3) On the front side of the rear wheel on the lower surface of the floor brush, a convex portion that is close to the rear wheel and has a length shorter than the protruding length from the lower surface of the rear wheel is provided.

(4) The spatula disposed on the front surface of the floor brush is made of an elastic material in which hanging portions and cutout portions are alternately provided, and slits which extend upward from the lower end portions are provided at substantially central portions of the hanging portions. It is a thing. (5) The spatula is configured by alternately arranging strip-shaped members made of an elastic material and stacking side ends on front and back. (6) A spatula is a long elastic member provided with eight-shaped slits at predetermined intervals in the vertical direction, and elastic pieces having a trapezoidal cross section and elastic pieces having an inverted trapezoidal cross section are alternately formed. (7) The elastic piece having an inverted trapezoidal cross section is formed thinner than the elastic piece having a trapezoidal cross section.

(8) The grip portion of the hand pipe is formed in a loop shape, and the angle formed by the line passing through the central portion of the connecting portion of the hose and the cut line of the grip portion is set within 10 °. (9) The grip part of the pipe at hand is formed in a loop shape, and the pipe at hand is configured by connecting three parts of the main body, the hose connecting part and the cover part, and a connecting part where these three parts intersect at one place is formed. , Is set substantially parallel to the line passing through the center of the extension pipe connection.

(10) The hand pipe is a cover for covering the connecting portion of the extension pipe whose diameter is reduced by the inclined surface from the opening toward the back, the window hole provided on the upper wall of the connecting portion, and the upper surface of the connecting portion. And a lever that is removably disposed between the upper wall of the connecting portion and the cover, has a lever that is rotatably pivoted, and has its tip portion protruding from the window hole of the connecting portion into the connecting portion, and part of And a push button protruding from the cover.

[0023]

(1) Since the floor brush is provided with both a holding portion for holding the bearing portion of the rotary brush having blades and the like and a holding portion for holding the bearing portion of the rotary brush having wheels on both sides of the blade and the like, Holds two types of rotary brushes
It can be shared by all kinds of floor brushes. (2) Further, since the vertical height of the cross-shaped bearing portion of the rotary brush is made shorter than the horizontal length by 10% or more, the vertical and horizontal can be easily identified visually. For this reason, the upper, lower, left, and right sides are not inserted by mistake when assembled into the floor brush.

(3) When the floor brush is moved onto a carpet or the like by providing a convex portion on the front side of the rear wheel of the floor brush,
First, the convex portion pushes down the fluff of the carpet or the like, and the rear wheel moves on it, so that the floor brush can be moved with a weak force.

(4) The spatula provided on the front surface of the floor brush is provided with a slit at substantially the center of the hanging portion.
Alternatively, strip-shaped elastic materials are alternately arranged and the side ends are overlapped and arranged in front and back, and further, elastic pieces having a trapezoidal cross section and elastic pieces having an inverted trapezoidal cross section are alternately formed by an eight-shaped slit,
Further, by forming the elastic piece having an inverted trapezoidal cross section to be thinner than the elastic piece having a trapezoidal cross section, the suction performance of dust and the like on the front surface of the floor brush is improved, and the vacuum degree of the suction port and the dust and the like on the front surface of the floor brush are The suction performance can be balanced.

(5) Cleaning is performed by forming the grip portion of the hand pipe into a loop shape and setting the angle formed by the line passing through the center of the connecting portion of the hose and the cut line of the grip portion within 10 °. The grip does not come off from the hand inside, and the movement of the floor brush is light, improving operability.

(6) Further, the hand pipe is constructed by connecting three parts of the main body, the hose connecting part and the cover part, and the connecting part where these three parts intersect at one place is the central part of the extension pipe connecting part. By setting it to be substantially parallel to the line passing through, it becomes easy to manufacture a mold for molding the hand pipe, and the manufacturing cost can be reduced.

(7) The hand pipe has a connecting portion of an extension pipe whose diameter is reduced by an inclined surface from the opening toward the back, a window hole provided in this connecting portion, a cover, and a lever. In the case of a floor brush having a rotary brush, the push button is detachably provided between the cover and the cover, so that the push button is provided between the connecting portion and the cover and is inserted into the connecting portion. Lock the extended pipe with the push button lever. When removing the extension pipe, push down the push button to unlock, and then pull out the extension pipe. Also, in the case of a floor brush without a rotary brush, a push button is not attached, and an extension pipe is inserted into the connecting portion while being rotated to be connected. In this way, both extension pipes can be connected to one type of hand pipe regardless of the presence or absence of the rotary brush.

[0029]

【Example】

Embodiment 1 FIG. 1 is a bottom view showing a main part of a first embodiment of the present invention, and FIG.
Is an explanatory view of its action. In both figures, 7 is a floor brush, 8 is a case, and 11 is a suction port. 12, 12a are rotary brushes, 13 is a shaft body, 14a is a blade attached to the shaft body 13, and 15 is integrally configured with the shaft body 13,
It is a pulley around which the belt 20 is hung. 16a, 16b
Is a bearing portion provided at both ends of the shaft body 13, and 17 is a wheel 25.
It is a cross-shaped bearing portion (see FIG. 3) provided on one side of the shaft body 13 of the rotary brush 12a having a and 25b.

Reference numerals 18a and 18b hold the bearing portions 16a and 16b of the rotary brush 12 having no wheels. Therefore, the holding portions provided on the side wall of the case 8 and 19a and 19b denote the wheel 25.
It is a holding portion provided on the top plate of the case 8 for holding one bearing portion 17 of the rotary brush 12a having a and 25b. The holding portion 18a is used for the other bearing portion 16a of the rotary brush 12a. Here, the holding unit 1
9a, 19b spacing W and rotary brush 12, 12a
The diameter d of the shaft portion 13 is selected as W> d. In addition,
The holding portions 18a and 18b may be provided on the top plate of the cover 8 near the side wall.

In this embodiment constructed as described above,
In order to assemble the wheelless rotary brush 12 into the case 8, as shown in FIG.
3 is placed in the suction port 11, the belt 20 is hung on the pulley 15, and then the bearing portions 16a and 16b provided at both ends are fitted into the holding portions 18a and 18b so as to be rotatably held.
Further, the rotary brush 12 having the wheels 25a and 25b
In order to assemble a into the case 8, as shown in FIG. 2, the shaft 13 having the blade 14a is attached to the pulley 15 by the belt 20.
The bearing part 1 which is placed at one end by being hung on the inside of the suction port 11
6a is fitted into the holding portion 18a, and the bearing portion 17 provided at the other end is fitted into the holding portions 19a and 19b, and is rotatably held.

As described above, in this embodiment, the holding portions 18a and 18b for holding the bearing portions 16a and 16b of the wheelless rotary brush 12 are provided on the side wall of the case 8 of the floor brush 7 or in the vicinity thereof. On the top plate of Case 8,
Holding portions 19a, 19 for holding the bearing portion 17 on the pulley 15 side of the rotary brush 12a having wheels 25a, 25b
b is provided, one holding portion 18a is also used, and the other holding portion 18b or 19a, 19b is made to hold the bearing portion 16b or 17, respectively, so that the wheels 25a, 25
Regardless of the presence or absence of b, the rotary brush 1
Both 2 and 12a can be mounted arbitrarily.

Embodiment 2 FIG. 3 is a front view and a side view of a main portion of a second embodiment of the present invention. In the figure, 12a is a rotary brush,
13 is a shaft body, 14a is a blade attached in a gentle spiral shape over substantially the entire length of the shaft body 13, 15 is a pulley,
16a is one bearing portion, 17 is the other cross-shaped bearing portion,
25a and 25b are shafts 1 on both sides of the blade 14a.
It is a wheel provided integrally with the wheel 3.

By the way, the floor brush 7 generally has a flat shape, and when the height dimension is restricted, the bearing portion 1
The vertical dimension a of 7 must also match the height of the floor brush 7. In this case, as described in the first embodiment, between the distance W between the holding portions 19a and 19b of the bearing portion 17 and the diameter d of the shaft body 13 of the rotary brush 12a, W>
Since there is a relationship of d, the left and right lengths b of the bearing portion 17 are adapted to this length, and the length a in the vertical direction is shortened according to the height of the floor brush 7, so that the left and right sides and the upper and lower sides are asymmetrical. Must be configured.

However, according to the above conditions, it is difficult to visually determine the vertical length a of the bearing portion 17 by making the vertical length a slightly shorter than the horizontal length b. In some cases, the bearing portion 17 may be attached to the case 8 with the left-right direction being up and down. For this reason, not only the bearing portion 17 cannot be held by the holding portions 19a and 19b, but also the vertical height is higher than that of the case 8, and the cover 9 cannot be attached.

Therefore, in this embodiment, the bearing portion 17
The height a in the up and down direction is made shorter than the length b in the left and right direction by 10% or more so that the up and down and the left and right can be easily discriminated visually. As a result, the rotary brush 12
It is possible to reliably prevent erroneous incorporation of a.

Embodiment 3 FIG. 4 is a bottom view of a floor brush according to the third embodiment of the present invention. In the figure, 7 is a floor brush without a rotary brush, 8 is its case, 9 is a cover, 10 is an elbow, 11
Is the inlet. The rear wheels 26a and 26b are attached to the case 8 so that the outer peripheries of both sides of the elbow 10 are below the lower surface of the floor brush 7 by h (see FIG. 5).
27a and 27b are front wheels provided on both sides of the suction port 11.

Reference numeral 9a denotes a convex portion projecting on the cover 9 on the front side of the rear wheels 26a, 26b and in the vicinity of the rear wheels 26a, 26b. The protrusion height h ₁ thereof is as shown in FIG. It is lower than the height h from the lower surface of _No. 7 to the outer peripheral portions of the rear wheels 26a and 26b, and h> h ₁ is selected.

In this embodiment constructed as described above, as shown in FIG. 5, when the floor brush 7 is moved in the direction of the arrow for cleaning the carpet or the like 28, first, the convex portion 9a moves to the carpet or the like 28. Push down the hairs, and place the rear wheels 26a, 26b on it.
Is passed, the floor brush 7 can be moved smoothly with a small force.

Embodiment 4 FIG. 6 is a perspective view of a floor brush according to a fourth embodiment of the present invention,
FIG. 7 is an enlarged perspective view of the main part. In the figure, 7 is a floor brush, 8 is a case, 8a is an opening provided in the front surface of the case 8, and 10 is an elbow. 30 is made of an elastic material such as rubber or ENVI, and its lower end is at the same position as the lower surface of the floor brush 7 or slightly above it.
The spatula is attached to the opening 8a provided on the front surface of the above, and a plurality of hanging parts 31 and a plurality of cutting parts 32 are alternately provided at predetermined intervals. Reference numeral 33 is a slit provided in the substantially central portion in the width direction of each hanging portion 31 and extending upward from the lower end portion.

In the present embodiment constructed as described above,
When the floor surface or the like is cleaned by the floor brush 7, dust and the like on the front surface of the floor brush 7 is sucked from the cutout portion 32 and the hanging portion 31 is also made flexible by the slit 33, so that it is bent inward by the suction force. Suction the dust and the like on the front surface. Thus, according to the present embodiment, the spatula 30
Since the slit 33 is provided in the hanging part 31 of the to make it flexible,
Dust and the like on the front surface of the spatula 30 can be efficiently sucked without affecting the vacuum degree of the floor brush 7.

Embodiment 5 FIG. 8 is a perspective view of a main portion of a fifth embodiment of the present invention and its AA section.
FIG. A spatula 30 is attached to the opening 8a provided on the front surface of the floor brush 7. In this embodiment, a plurality of strip-shaped elastic members 3 made of rubber, plastic or the like are used.
4 and 35 are alternately arranged with the front and rear side ends overlapped with each other to form an armored door.

In this embodiment as described above, when suction is started, the inner elastic member 35 is sucked and bent inward as shown in FIG. Since 34 is difficult to bend, it maintains almost the same state. As a result, it is possible to prevent the vacuum degree of the suction portion from being lowered, and to balance the vacuum degree and the suction performance of the dust or the like 36.

Sixth Embodiment FIG. 10 is a perspective view and a bottom view of essential parts of a sixth embodiment of the present invention. In this embodiment, an elastic member 3 made of rubber, ENVI, or the like and having a size that closes the opening 8a on the front surface of the floor brush 7.
7 is provided with a slit 38 having a predetermined width and inclined in an eight shape, and an elastic piece 39 having a trapezoidal cross section and an elastic piece 4 having an inverted trapezoidal cross section are provided.
The spatula 30 is configured by alternately forming 0s.

In the spatula 30 configured as described above, when suction is started, the elastic piece 4 having an inverted trapezoidal cross section.
0 is sucked and bent inward to suck dust or the like on the front surface, but the elastic piece 39 having a trapezoidal cross section is difficult to bend, and thus the state is maintained almost as it is. As a result, it is possible to prevent the vacuum degree of the suction section from being lowered and to balance the vacuum degree and the suction performance of dust and the like.

Embodiment 7 FIG. 11 is a perspective view and a bottom view of essential parts of a seventh embodiment of the present invention. This embodiment is almost the same as the sixth embodiment, but the thickness of the elastic piece 40a having an inverted trapezoidal cross section is made thinner than the thickness of the elastic piece 39 having a trapezoidal cross section to increase the bending by suction. The suction performance of dust is improved.

Embodiment 8 FIG. 12 is a side view showing an essential part of an eighth embodiment of the present invention. In the figure, 4 is a hand pipe, 41 is a connecting portion of the hose 3, 42 is a connecting portion of the extension pipe 6, and 43 is a loop-shaped grip portion. The hand pipe 4 according to the present embodiment
Is a structure in which a main body A formed by molding a synthetic resin, a hose connecting portion B, and a cover portion C are integrally connected. Further, on the upper surface of the main body A, various switches and the like that form the operation unit 5 provided on the cover C are provided, and when the floor brush 7 has the rotary brush 12, the operation unit 5 and the floor brush 7 are Passages of continuous conductive lines are provided.

As a result of various experiments conducted on the operability of the floor brush 7, the present inventors have found that the line 0 ₁ -0 ₁ passing through the central portion of the connecting portion 41 of the hose 3, the main body A of the grip portion 43 and the cover. The angle θ formed by the cut line 0 ₂ -0 ₂ of the alignment line 44 of the part C is in the range of 0 ° to 10 °, that is, the line 0
₁ -0 ₁ and 0 ₂ -0 ₂ and it was found that good operability closer either parallel or as parallel as possible.

As described above, according to the results of the experiments conducted by the inventors of the present invention, when the bottom surface of the floor brush 7 is in contact with the floor surface substantially in parallel, the above-mentioned O ₂ -O ₂ line is generated. The connecting portion 4 of the hose 3 which is substantially parallel to the floor and is connected to the connecting portion 41
It was revealed that the smaller the overhang from 1 to the rear, the better the operability. Therefore, in order to improve operability, FIG.
As shown in FIG. 3, if the angle θ is large when the O ₂ -O ₂ line is operated in parallel with each other, the connecting portion 4
When 1 is directed obliquely upward, the rearward extension of the hose 3 becomes large, and a large force is required to support the weight of the hose 3, and the operability deteriorates.

Therefore, in order to reduce the rearward extension of the hose 3 from the connecting portion 41 and reduce the force for supporting the weight of the hose 3, the O ₁ -O ₁ lines are arranged in parallel and the grip portion 43 is provided. When θ is large, as shown in FIG. 13, the inclination with respect to the floor surface becomes large, and the floor brush 7 is not reliably adhered to the floor surface, so that the suction performance is deteriorated and the thumb side is up. The grip portion 43 is to be gripped, which puts a heavy burden on the hand and causes great fatigue.

From the above, by making the O ₁ -O ₁ line and the O ₂ -O ₂ line as close as possible to each other and setting the angle θ formed by the two in the range of 0 to 10 °,
The operability of the floor brush 7 can be improved.

Since this embodiment is constructed as described above, it is possible to obtain a hand pipe which does not come off during cleaning, has strength, is durable and easy to use, and has excellent operability. .

Ninth Embodiment Further, the three-way joint 45 of the main body A, the hose connecting portion B and the cover portion C is made parallel to the 0-0 line passing through the central portion of the connecting portion 42 of the extension pipe 6. It is composed. With this structure, the structure of the mold can be simplified, the manufacturing cost can be reduced, and the parts can be easily mounted.

Embodiment 10 FIG. 13 shows a tenth embodiment of the present invention and is a sectional view and a side view of an essential part of a hand pipe. Reference numeral 46 is a connecting portion that forms a connecting portion 42 of the hand pipe 4 and the extension pipe 6, and the inner diameter thereof is reduced by the sloping inclined surface 47 as it goes deeper from the opening portion, and when the length L is reached, the hose is connected. It communicates with the part 41. Reference numeral 48 is a window hole provided in the connection portion 46, 49 is a vertical wall provided on both sides of the window hole 48, and 50 is a stopper provided in the opening portion, which is provided with a connection terminal for a conductive wire. Reference numeral 51 is a passage of a conductive wire formed between the peripheral wall of the connecting portion 46 and the cover C.

Next, the operation of this embodiment will be described. 14
Shows an example in which an extension pipe 6 of a floor brush having a rotary brush is connected to the hand pipe 4 according to this embodiment. Reference numeral 52 denotes a cylindrical push button that is removably disposed between the connecting portion 46 and the cover C. The lever 53, which is integrally formed with the push button 52, has a substantially central portion rotatably mounted on the vertical wall 49. Since the push button 52 is stopped, a part of the push button 52 is projected to the outside from a window hole 55 provided in the cover C. Reference numeral 54 is a spring interposed between the push button 52 and the connecting portion 46, and always biases the lever 53 so as to rotate it clockwise. The push button 52 is attached only to the hand pipe 4 for a floor brush having a rotary brush.

Reference numeral 6 denotes an extension pipe having an outer diameter substantially equal to the outer diameter of the connecting portion 46 of the hand pipe 4, and a stopper 56 having a connecting terminal facing the stopper 50 of the hand pipe 4 at a position L ₁ from the tip. Is provided, and this stopper 56
From the end to the tip portion, an inclined surface 58 corresponding to the inclined surface 47 of the connection portion 46 of the hand pipe 4 is formed, and the diameter thereof is gradually reduced to form the connection portion 57. Reference numeral 59 is a locking portion formed near the tip of the connecting portion 57, and the tip of a lever 53 provided on the push button 52 of the proximal pipe 4 is locked. Reference numeral 60 is a cover forming a passage 51a for the conductive wire.

The extension pipe 6 as described above is connected to the hand pipe 4
In order to connect to the connection pipe 5, the connecting portion 57 of the extension pipe 6 is inserted into the connecting portion 46 of the hand pipe 4 and pushed in. When it is further pushed in, the tip portion pushes up the lever 53 of the push button 52 and moves forward, and the stopper 56 hits the stopper 50 of the hand pipe 4 to connect the conductive wire and stop. At this time, the tip portion of the lever 53 of the push button 52 is locked to the locking portion 59 of the extension pipe 6. Thereby, the hand pipe 4 and the extension pipe 6 are locked, and escape and rotation are prevented. When removing the extension pipe 6 from the hand pipe 4, the push button 52 may be pressed down, the lever 53 may be rotated counterclockwise to release the engagement with the locking portion 59, and the extension pipe 6 may be pulled out.

FIG. 15 is a sectional view showing an example in which the extension pipe 6 of a floor brush without a rotary brush is connected to the hand pipe 4. Reference numeral 6 denotes an extension pipe having an outer diameter substantially equal to the inner diameter of the opening of the connection portion 46 of the hand pipe 4, and the diameter thereof is successively reduced from the tip portion to the position L ₂ corresponding to the inclined surface 47 of the connection portion 46 of the hand pipe 4. The connecting portion 61 is formed on the inclined surface 62. In addition, 63 is a sealing material that closes the window hole 48 in order to prevent the entry of air and dust. Also, the cover C is used without the window hole 55,
A cover C having a window hole 55 as shown in FIG. 14 may be used, and the window hole 55 may be closed with a sealing material.

The extension pipe 6 is attached to the hand pipe 4 as described above.
To connect the two, the tip of the extension pipe 6 may be inserted into the opening of the connecting portion 46 of the proximal pipe 4 and pushed in while rotating. When the distal end of the extension pipe 6 hits the rear end of the connecting portion 46 of the hand pipe 4, the extension pipe 6 stops, and the two are connected and held at that position. When removing the extension pipe 6, the extension pipe 6 may be pulled out while rotating.

In this way, in this embodiment, the extension pipe 6 for the floor brush having the rotor brush and the extension pipe 6 for the floor brush without the rotary brush are provided as one type of the hand pipe 4.
Since it is configured so that it can be connected to, the manufacturing cost of the hand pipe 4 can be reduced and the inventory management can be simplified.

[0061]

As is apparent from the above description, according to the present invention, the following effects can be obtained. (1) Since the floor brush is provided with a holding portion for holding the bearing portion of the rotary brush having blades and the like and a holding portion for holding the bearing portion of the rotary brush having wheels on both sides of the blade and the like, one type of floor Both of the rotary brushes can be mounted by sharing the brush. For this reason, since only one mold is required to mold the floor brush, the cost of the mold and the floor brush can be reduced, and the inventory management and production management of the floor brush can be facilitated to improve the productivity. it can.

(2) Further, since the vertical height of the cross-shaped bearing of the rotary brush is made shorter than the horizontal length by 10% or more, the vertical and horizontal can be easily identified visually. For this reason, there is no possibility of mistakenly assembling the top, bottom, left, and right when assembling, and productivity can be improved.

(3) Since the convex portion is provided on the front side of the rear wheel on the lower surface of the floor brush, when the floor brush is moved onto a carpet or the like,
First, the convex portion pushes down the fluff of the carpet or the like, and the rear wheel moves on it, so that the floor brush can be moved even with a weak force, and the operability can be improved.

(4) A slit is provided in the hanging part of the spatula consisting of a hanging part and a cutout part, or strip-shaped elastic materials are alternately arranged and overlapped at the side end parts, and are arranged in front and back, and further, an eight-shaped slit. The trapezoidal elastic piece and the inverted trapezoidal elastic piece are alternately formed by the above-mentioned method, and the inverted trapezoidal elastic piece is formed thinner than the trapezoidal elastic piece, so that the vacuum of the floor brush is reduced. It is possible to improve the suction performance of dust and the like on the front side without deteriorating the degree of suction and to balance the vacuum degree of the suction port and the suction performance of dust and the like on the front face of the floor brush.

(5) Since the grip portion of the pipe at hand was formed into a loop shape and the angle formed by the line passing through the connecting portion of the hose and the cut line of the grip portion was set within 10 °, the grip portion from the grip portion during cleaning It is possible to obtain an electric vacuum cleaner that is excellent in strength and has good operability, since the hands do not come off and the movement of the floor brush is light.

(6) The hand pipe is constructed by connecting three parts of the main body, the hose connecting part and the cover part, and the connecting part where these three parts intersect at one place passes through the central part of the extension pipe connecting part. Since it is set substantially parallel to the line, it becomes easy to manufacture a mold for molding the hand pipe, and the cost of the mold and the hand pipe can be reduced.

(7) The connecting portion of the extension pipe of the hand pipe is provided with a connecting portion whose diameter is reduced by an inclined surface from the opening toward the back, a window hole provided in this connecting portion, a cover, and a lever. Since it is constituted by a push button which is detachably arranged between the connecting portion and the cover, the extension pipe for the floor brush having the rotary brush and the extension pipe for the floor brush without the rotary brush are provided in one kind at hand. Pipes can be used and connected. Therefore, not only the production cost of the mold for molding the hand pipe can be reduced to half, but also the cost of the hand pipe can be reduced, and in addition, inventory control,
Production management can be simplified.

[Brief description of drawings]

FIG. 1 is a bottom view of the first embodiment of the present invention.

FIG. 2 is an explanatory view of the operation of the first embodiment.

FIG. 3 is a front view and a side view of a second embodiment of the present invention.

FIG. 4 is a bottom view of the third embodiment of the present invention.

FIG. 5 is an explanatory view of the operation of the third embodiment.

FIG. 6 is a perspective view of a fourth embodiment of the present invention.

FIG. 7 is an enlarged view of a main part of FIG.

FIG. 8 is a perspective view of a main part of a fifth embodiment of the present invention and its A.
FIG.

FIG. 9 is an explanatory view of the operation of the fifth embodiment and a BB sectional view thereof.

FIG. 10 is a perspective view and a bottom view of essential parts of a sixth embodiment of the present invention.

FIG. 11 is a perspective view and a bottom view of essential parts of a seventh embodiment of the present invention.

FIG. 12 is a front view of an eighth embodiment of the present invention.

FIG. 13 is an explanatory view of the operation of the eighth embodiment.

FIG. 14 is an explanatory view of the operation of the eighth embodiment.

15A and 15B are a sectional view and a side view of a main part of a ninth embodiment of the present invention.

FIG. 16 is an explanatory view of the operation of the ninth embodiment.

FIG. 17 is an explanatory view of the operation of the ninth embodiment.

FIG. 18 is a perspective view showing an overall configuration of a conventional electric vacuum cleaner.

FIG. 19 is a perspective view of the floor brush of FIG.

20 is a bottom view of FIG.

FIG. 21 is a bottom view of a floor bush provided with a conventional rotary brush having wheels.

FIG. 22 is a bottom view of another conventional floor brush.

FIG. 23 is an explanatory view of the action of the floor brush of FIG. 20.

FIG. 24 is a perspective view of still another conventional floor brush.

FIG. 25 is a front view of a conventional hand pipe.

[Explanation of symbols]

 1 Vacuum Cleaner Main Body 3 Hose 4 Hand Pipe 5 Operating Section 6 Extension Pipe 7 Floor Brush 8 Case 8a Opening 9 Cover 9a Convex 10 Elbow 11 Suction Port 12, 12a Rotary Brush 13 Shaft 14a Blade 16a, 16b, 17 Bearing 18a, 18b, 19a, 19b Holding part 25a, 25b Wheel 26a, 26b Rear wheel 27a, 27b Front wheel 30 Spatula 31 Hanging part 32 Cutout part 33, 38 Slit 34, 35 Elastic material 37 Elastic member 39, 40, 40a Elastic piece 41 Connection part of hose 42 Connection part of extension pipe 43 Grip part A Main body B Hose connection part C Cover part 46,57,61 Connection part 47,58,62 Inclined surface 48,55 Window hole 49 Vertical wall 51,51a Of conductive wire Passage 52 Push button 53 Lever 54 Spring 59 Locking part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takehiro Yamaguchi 1728 Omaeda, Omaeda, Hanazono-cho, Saitama-gun 1728 Inside Mitsubishi Electric Home Equipment Co., Ltd. (72) Osamu Takishima 1728 1-maede, Omaeda, Hanazono-cho, Saitama Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Tomohisa Imai 1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1 Mitsubishi Electric Home Equipment Co., Ltd. (72) Koji Goto 1728 Omaeda, Hanazono-cho, Saitama-gun 1 Within Mitsubishi Electric Home Equipment Co., Ltd.

Claims (10)

[Claims] 1. An electric vacuum cleaner comprising a cleaner main body, a hose, a pipe at hand, an extension pipe, and a floor brush having a rotary brush arranged at a suction port. A bearing for a rotary brush having blades or the like on the floor brush. An electric vacuum cleaner, comprising: a holding portion for holding a portion; and a holding portion for holding a bearing portion of a rotary brush having wheels provided on both sides of a blade or the like. 2. An electric vacuum cleaner comprising a cleaner body, a hose, a pipe at hand, an extension pipe, and a floor brush having a rotary brush arranged at a suction port, and the like. An electric vacuum cleaner characterized in that the height in the direction is configured to be 10% or more shorter than the length in the left-right direction. 3. An electric vacuum cleaner comprising a vacuum cleaner body, a hose, a hand pipe, an extension pipe, and a floor brush having a suction port, a front wheel, and a rear wheel on the lower surface, and a front wheel on the lower surface of the lower surface of the floor brush. An electric vacuum cleaner, wherein a convex portion having a length shorter than a protruding length from the lower surface of the rear wheel is provided in the vicinity of the rear wheel. 4. An electric vacuum cleaner comprising a vacuum cleaner body, a hose, a pipe at hand, an extension pipe, and a floor brush having a suction port provided on a lower surface and a spatula attached to an opening provided on the front surface. An electric vacuum cleaner, characterized in that it is made of an elastic material in which hanging parts and excision parts are provided alternately and slits which extend upward from the lower end part are respectively provided at substantially central parts of the hanging parts. 5. The electric vacuum cleaner according to claim 4, wherein instead of the spatula, a spatula is provided in which strip-shaped members made of an elastic material are alternately arranged and the front and rear sides are overlapped. . 6. Instead of the spatula, eight elongated slits are provided at predetermined intervals in the vertical direction of a long elastic member,
5. The vacuum cleaner according to claim 4, further comprising a spatula formed by alternately forming elastic pieces having a trapezoidal cross section and elastic pieces having an inverted trapezoidal cross section. 7. The vacuum cleaner according to claim 6, wherein the elastic piece having an inverted trapezoidal cross section is formed thinner than the elastic piece having a trapezoidal cross section. 8. An electric vacuum cleaner comprising a vacuum cleaner body, a hose, an extension pipe, a hand pipe having a connecting portion for the hose and the extension pipe, a floor brush, and the like, wherein the hand pipe holding portion is provided. While forming into a loop,
An electric vacuum cleaner, wherein an angle formed by a line passing through a central portion of the hose connecting portion and a cut line of the grip portion is set within 10 °. 9. An electric vacuum cleaner comprising a vacuum cleaner main body, a hose, an extension pipe, a hand pipe having a grip portion and a connecting portion for the hose and the extension pipe, and a floor brush, wherein the hand pipe grip portion is provided. While forming into a loop,
The hand pipe is constructed by connecting three parts of a main body, a hose connecting part and a cover part, and a connecting part where these three parts intersect at one place is a line passing through the center of an extension pipe connecting part provided in the main body. An electric vacuum cleaner characterized by being set almost parallel. 10. An electric vacuum cleaner comprising a vacuum cleaner body, a hose, an extension pipe, a hand pipe having a connecting portion for the hose and the extension pipe, a floor brush, and the like, wherein the extension pipe connecting portion is provided. A connection part formed by reducing the diameter from the opening toward the back with an inclined surface, a window hole provided in the upper wall of the connection part, a cover for covering the upper surface of the connection part, and an upper wall of the connection part. Is detachably disposed between the cover and the cover, and has a lever that is rotatably pivoted and has a tip portion protruding from the window hole of the connection portion into the connection portion, and part of the lever protrudes from the cover. An electric vacuum cleaner comprising a hand pipe having a push button.