JP2003310496A - Suction tool for electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve assembly performance and dust suction efficiency of a suction tool which has a revolving cleaning body provided inside the suction tool and divided into a plurality of parts coaxially and makes the adjacent revolving cleaning bodies revolve in opposite directions mutually. <P>SOLUTION: Tri-partitioned revolving cleaning bodies 17, 18, 19 are mounted through a power transmission shaft 24 made of a tier shaft having a large diameter in the center and a reduced diameter toward both ends. The second and third revolving cleaning bodies 18, 19 are constituted to revolve in the opposite direction from the first revolving cleaning body 17 by transmitting power to the first revolving cleaning body 17 located in the center directly from the power transmission shaft 24 and by transmitting power to the second and the third revolving cleaning bodies 18, 19 located on both sides through gearing systems 26, 27 at parts 24b, 24c with the reduced diameter at both ends of the power transmission shaft 24. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tool for an electric vacuum cleaner used at home.

[0002]

2. Description of the Related Art FIG. 15 shows, for example, Japanese Patent Laid-Open No. 4-105625.
It is a bottom cross-sectional view of the suction tool of the conventional vacuum cleaner shown by the publication.

In FIG. 15, 1 is a suction tool having an opening on the bottom surface, 2 is an agitator arranged in the lower part of the suction tool 1, and a plurality of them are arranged in the longitudinal direction of the outer peripheral surface of the cylindrical rotor 3. The stirring body 4 is provided in a spiral shape. 5 is a connecting pipe provided in the upper center of the suction tool 1, 6 is the suction tool 1
A motor arranged on one side of the inside, and a changeover switch 7 attached to the outer peripheral surface of the connection pipe 5 for switching the rotation direction of the motor 6.

In such a case, the user determines which of the forward and reverse rotation directions the motor 6 is to be rotated, and switches the changeover switch 7 to select the rotation direction of the agitator 2. As a result, the bottom surface of the suction tool 1 is pressed against the floor surface and moved forward, backward, leftward, and rightward, and in this process, the agitator 2 rotates in one direction, so that dust adhering to hair such as a carpet is scraped off. Then, the dust flows in through the suction port a and is sent from the connection pipe 5 to the main body side of the electric vacuum cleaner through an unillustrated extension hose.

[0005]

However, in such a conventional suction tool 1, when the user sets the rotation direction of the agitator 2 by the changeover switch 7 and scrapes out dust while rotating the agitator 2, Since it is continuously rotated only in either the forward direction or the reverse direction, there is a problem that it is difficult to efficiently scrape out dust that is strongly entangled in the hair of a carpet or the like and absorb the dust.

[0006] Therefore, the rotary cleaning body disposed in the suction tool is coaxially divided into a plurality of parts, and the adjacent rotary cleaning bodies are rotated in opposite directions to each other, so that the hairs of a carpet or the like are moved back and forth during cleaning. The applicant of the present invention has proposed a device that can be shaken to improve the dust collection efficiency, but there remains a problem with respect to the assemblability and further improvement of the dust collection efficiency in such a product. It had been.

In view of the above points, the present invention has a structure in which a rotary cleaning member disposed in a suction tool is coaxially divided into a plurality of parts so that adjacent rotary cleaning members can rotate in mutually opposite directions. It is an object of the present invention to improve the assemblability and further improve the dust absorption efficiency of a tool.

[0008]

A suction tool for an electric vacuum cleaner according to claim 1 of the present invention has the following structure. That is, it is a suction tool for an electric vacuum cleaner in which a rotary cleaning body of a three-part structure is coaxially provided in the bottom opening.
The rotary cleaning body of the divided structure is attached via a single power transmission shaft composed of a step shaft having a thick central portion and a diameter that decreases toward both ends. , The power is directly transmitted from the power transmission shaft, and the second and third rotary cleaning bodies located on both sides thereof are transmitted to the reduced diameter portions at both ends of the power transmission shaft via the gear mechanism, The second and third rotary cleaning bodies and the first rotary cleaning body are configured to rotate in mutually opposite directions.

Further, in the suction tool of the electric vacuum cleaner according to a second aspect of the present invention, the outer diameter of the main body of the first rotary cleaning body located at the center is the main body of the second and third rotary cleaning bodies located on both sides. The outer diameter is smaller than the outer diameter.

Further, the suction tool of the electric vacuum cleaner according to a third aspect of the present invention is a main body length for attaching dust removers to a plurality of circumferential positions of the main body peripheral surfaces of the first, second and third rotary cleaning bodies, respectively. Both ends of at least one peripheral surface of the main body peripheral surface that is formed between the dust collector mounting grooves on the side of the first rotary cleaning body that is formed with a dust collector mounting groove that penetrates in the direction In addition, a dust cutting groove into which a blade of a cutting tool for cutting wound wire dust is inserted.

Further, in the suction tool of the electric vacuum cleaner according to a fourth aspect of the present invention, the dust remover mounting grooves of the first, second and third rotary cleaning bodies are all parallel to the main body axial direction of the rotary cleaning bodies. It is formed by.

Further, in the suction tool of the electric vacuum cleaner according to a fifth aspect of the present invention, the dust remover mounting groove on the side of the first rotary cleaning body located at the center is formed parallel to the axial direction of the main body and is located on both sides. Each of the dust remover mounting grooves on the second and third rotary cleaning bodies is formed in a spiral shape in which an angle is set in the direction in which dust on the floor surface is collected in the center with respect to the rotation direction, and these spiral shapes are formed. The dust remover mounting groove is set so that the angle far from the central suction port is large and the angle near the central suction port is gentle.

Further, the suction tool of the electric vacuum cleaner according to a sixth aspect of the present invention is a flange-shaped tool having a notch for attaching a dust remover and a notch for cutting dust at both ends of the main body of the first rotary cleaning body located at the center. A thread entanglement prevention wall is provided.

Further, in the suction tool of the electric vacuum cleaner according to a seventh aspect of the present invention, the dust proof falling-off prevention lids which can be fitted to the thread entanglement prevention walls are provided at both ends of the first rotary cleaning body located at the center. It is a thing.

Further, in the suction tool of the electric vacuum cleaner according to the eighth aspect of the present invention, the dust remover falling prevention lid is provided at each of the end portions of the second and third rotary cleaning bodies which face both end surfaces of the first rotary cleaning body. It is provided integrally with a side dust remover removal preventing member that is attached and prevents the dust removers on the second and third rotary cleaning bodies from falling off, and is slidably provided with the first rotary cleaning body.

Further, in the suction tool of the vacuum cleaner according to the ninth aspect, the axial length of the dust remover on the side of the first rotary cleaning body located in the center is substantially the same as the width of the center suction port located behind it. It is set to be the length.

Further, the suction tool of the vacuum cleaner according to claim 10 uses the planetary gear mechanism as a gear mechanism for transmitting power to the second and third rotary cleaning bodies located on both sides, respectively. Are provided on the sun gear fixed to the reduced diameter portion of the end of the power transmission shaft, the plurality of planetary gears that mesh with the sun gear, and the outer ends of the first and second rotary cleaning bodies that are driven shafts. An internal gear that is fitted and fixed in the end face recess of the bulging portion and meshes with the planetary gear, and a plurality of gear mounting shafts that rotatably support each planetary gear, and a fixed wall that covers the opening of the recess,
It is composed of

Further, in the suction tool of the electric vacuum cleaner according to an eleventh aspect, a gear cover for covering the bulging portions of the first and second rotary cleaning bodies from the outside is attached to the outer periphery of the fixed wall, and the first and second On the outer peripheral surface of the bulging portion of the rotary cleaning body, an annular rib having a clearance adjusting function with the inner surface of the gear cover and a function of preventing the grease from popping out is formed, and the bulging of the first and second rotary cleaning bodies inside the gear cover. The gear housing space surrounded by the portion and the fixed wall is filled with dustproof grease.

Further, in the suction tool of the vacuum cleaner according to the twelfth aspect of the present invention, the fixed wall is made of a metal having a high thermal conductivity, and the outer surface of the suction tool is provided with a rectangular convex portion which is restrained by the suction tool body side. ,
A bearing for rotatably supporting the power transmission shaft is press-fitted into the center of the rectangular convex portion.

Further, in the suction tool of the vacuum cleaner according to the thirteenth aspect, the planetary gear mechanism portion surrounded by the fixed wall and the gear cover in a box shape is exposed in the bottom opening area of the suction tool. .

Further, the suction tool of the vacuum cleaner according to claim 14 reverses the motor for driving the power transmission shaft for a certain period of time.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 is an exploded perspective view showing a rotary cleaning body which is a main part of a suction tool of an electric vacuum cleaner according to claims 1 to 4 and 6 to 13 of the present invention, and FIG. 2 is a state of the rotary cleaning body after completion of its assembly. 5 is a bottom view showing a suction tool incorporating a completed rotary cleaning body, FIG. 4 is a perspective view showing a suction tool incorporating a completed rotary cleaning body with an upper cover removed, and FIG. Is a cross-sectional view taken along the line AA of FIG.
6 is a front sectional view showing the completed rotary cleaning body, FIG. 7 is an exploded perspective view showing a planetary gear mechanism that transmits power to the side rotary cleaning body, and FIG. 8 is a left side rotary cleaning body and a power transmission shaft. And FIG. 9 is a sectional view showing the relationship between the planetary gear mechanism and the rotary cleaning body on the right side, the power transmission shaft, and the planetary gear mechanism.

3 and 4, 11 is a suction tool having an opening 12 at the bottom and a suction port 13 provided at the rear of the central portion, 14 is a suction joint connected to the central suction port 13, and 15 is a suction joint. A connection pipe integrally provided in the suction joint 14 is a rotary cleaning body 16 disposed in the opening 12 of the suction tool 11, and includes a first rotary cleaning body 17 located in the center and both sides thereof. The second and third rotary cleaning bodies 18, 19 are
Each of the main bodies 17a, 18a, 19a is attached with a dust remover, that is, a blade 20, extending in parallel with the main body axial direction. Reference numeral 21 is a motor disposed on the rear side of the suction tool 11 on one side, 22 is a small-diameter motor-side pulley provided on the output shaft of the motor 21, and 23 is a power transmission shaft 24 of the rotary cleaning body 16 (FIGS. 1 and 6). A large-diameter shaft-side pulley attached to one end side of the motor 25, and a belt 25 wound around the pulleys 22 and 23.
2, the power transmitted to the power transmission shaft 24 via the belt 25 and the shaft-side pulley 23 is directly transmitted from the power transmission shaft 24 to the first rotary cleaning body 17, and the second and third rotary cleaning bodies 18 , 19 are transmitted via left and right planetary gear mechanisms 26, 27, which are gear mechanisms, respectively, and the second and third rotary cleaning bodies 18, 19 and the first rotary cleaning body 17 are driven in opposite directions. It is designed to rotate. Further, front wheels 28 a and 28 b are provided on both sides of the front edge portion on the lower surface of the suction tool 11, and rear wheels 28 a and 28 b are provided on both sides of the suction joint 14.
c and 28d are provided respectively. Further, these front and rear wheels 28a, 28b, 28c, 28d are arranged such that some or all of them are overlapped with the blade having a scraping effect when viewed from the front side of the suction tool, and the wheel passage line during the cleaning operation removes dust. It is designed so that it will not be left as a dead area.

More specifically, the power transmission shaft 24
1, 2 and 6, it is formed of a single shaft, and the central portion 24a is formed with a stepped shaft having a large diameter and a diameter that decreases toward both ends, and the right side stepped portion has two steps. Is configured. Then, the main body 17a of the first rotary cleaning body 17 is press-fitted into the central shaft portion 24a of the power transmission shaft 24, and the left and right sides of the main body 17a are respectively subjected to the second rotary rotation via bearings 31a, 31b and 31c, 31d such as oil-impregnated metal. The cleaning body 18 and the third rotary cleaning body 19 are attached. Also, the central shaft 24
In the step shaft portions 24b and 24c at the left and right ends that are continuous from a,
The planetary gear mechanisms 26 and 27 are attached, respectively, and the step shaft portion 24 of the second step which is continuous from the step shaft portion 24c on the right side.
The shaft side pulley 23 is attached to d. By thus forming the power transmission shaft 24 in the stepped shaft structure, the shaft (power transmission shaft) can be a single shaft even though the rotary cleaning body 16 has a three-part structure, and no misalignment occurs. It is possible to obtain a rotating cleaning body that is stable, quiet, and can reduce power loss.

As shown in FIG. 6, the first rotary cleaning body 17 located at the center has a main body 17a whose outer diameters are located on the left and right sides of the main body 18a of the second and third rotary cleaning bodies 18, 19, respectively.
It is set to have a smaller diameter than the outer diameter of 19a, and is configured so that the flow path of the air in the part where the air flows in and merges from the left and right toward the central suction port 13 becomes large. In this way, by expanding the air passage in front of the central suction port 13 from both sides, the wind speed and air volume loss are reduced, and the flow of air is not hindered.
Large dust can also be smoothly flowed toward the central suction port 13.

The first, second and third rotary cleaning bodies 17, 18,
As shown in FIGS. 1 and 5, the blades 2 are provided at a plurality of circumferential positions on the circumferential surface of each of the main bodies 17a, 18a, 19a.
0-shaped T-shaped dust remover mounting grooves 17b, 18b, 19b penetrating in the longitudinal direction of each main body are formed in parallel with the axial direction of the main body, and at the side of the first rotary cleaning body 17 located at the center. At both end positions on at least one peripheral surface of the main body peripheral surface existing between the dust remover mounting grooves,
As shown in FIGS. 1, 2 and 5, there is provided a dust cutting groove 17c into which a blade of a cutting tool for cutting wound wire dust can be fitted. By providing the dust cutting groove 17c in this way, it is possible to easily cut filamentous dust such as yarn or hair entangled in the first rotary cleaning body 17 with a cutting tool such as scissors or a cutter. .

Further, as shown in FIGS. 1, 5 and 6, a dust-like member mounting notch 17d and a dust cutting notch 17e are provided at both ends of the main body 17a of the first rotary cleaning body 17, respectively. A thread entanglement prevention wall 17f is provided.
Thus, by providing the thread entanglement prevention walls 17f at both ends of the main body 17a of the first rotary cleaning body 17, even if filament dust such as yarn or hair is entangled, the filament dust will not be entangled.
It is possible to prevent invasion to the 4 side.

Further, the main body 17a of the first rotary cleaning body 17
As shown in FIGS. 1 and 6, cap-shaped dust remover falling prevention lids 32 that can be fitted to the thread entanglement prevention walls 17f are attached to both ends of the first and second ends, respectively. Main bodies 18a, 1 of the three-rotation cleaning bodies 18, 19
Side-side dust removers fall prevention members 33 are also attached to the ends of 9a. As shown in FIGS. 1, 2 and 6, each side dust remover prevention member 33 basically has a double cylinder on the outer end side, and the inner cylinder 33a and the outer cylinder 3 thereof are provided.
The ends of the main bodies 18a, 19a of the second and third rotary cleaning bodies 18, 19 are sandwiched between the outer cylinder 33b and the outer peripheral surface of the outer cylinder 33b. A taper 33c is provided, and the end edge of the taper 33c is formed into a corrugated shape 33d, so that the blade 20 is partially surrounded. A cylindrical portion 33e is formed on the inner end side of each side dust remover prevention member 33,
The dust removal stopper lid 32 on the first rotary cleaning body side can be slidably fitted into the cylindrical portion 33e. In this way, by interposing the sliding member composed of the dust remover fall prevention cover 32 and the side dust remover fall prevention member 33 between the rotary cleaning bodies that rotate in opposite directions, mutual rotation can be stably performed. You can Further, a taper 33c whose end is reduced in diameter is provided on the outer peripheral surface of the outer cylinder 33b of the side-side dust remover prevention member 33, and the end edge of the taper 33c is formed in a corrugated shape 33d to partially surround the blade 20 in the axial direction. Side side dust remover fall prevention member 3
3 does not generate a gap in the axial direction between the blade 20 and the blade 20, and the taper 33c can slide the line dust such as yarn or hair to the taper end, and the side dust remover fall prevention member 33 part It is possible to prevent the wire dust from being caught.

Incidentally, here, the dust remover fall prevention lids 32 are attached to both ends of the main body 17a of the first rotary cleaning body 17, and then the inner end cylindrical portion 33e on the side dust remover fall prevention member 33 side.
Although description has been given by taking as an example the one that is fitted in the inside, both ends of the main body 17a of the first rotary cleaning body 17 are directly attached to the side dust remover prevention member without using the dust remover removal prevention lid 32. You may make it fit in the inner end cylinder part 33e of 33, and by this, the clearance gap between each rotary cleaning body can be compressed.

Further, bristles may be applied to the outer periphery of the side dust remover drop-preventing member 33 to substantially eliminate the gaps between the rotary cleaning members.

The blade 20 on the side of the first rotary cleaning body 17 located in front of the central suction port 13 has its axial length substantially the same as the width of the rear central suction port 13 as shown in FIG. As a result, it is possible to directly scrape dust from the first rotary cleaning body 17 into the central suction port 13 and improve the dust suction efficiency.

The outer ends of the main bodies 18a and 19a of the second and third rotary cleaning bodies 18 and 19 have dust remover mounting notches 18c and 19c, respectively, as shown in FIGS. 1, 2 and 6. The first bulging portions 18d and 19d and the second bulging portions 18e and 19e connected to the planetary gear mechanisms 26 and 27, respectively, which are continuous with the first bulging portions 18d and 19d are formed, and in a state where the blade 20 is attached, The first bulged portions 18d and 19d are structured so as to partially surround the blade 20. In this way, by providing the wall formed by the bulging portions 18d and 19d at the end of the rotary cleaning body in which filamentous dust such as yarn or hair is easily entangled, it is possible to reduce the probability that filamentous dust is entangled. Further, the bulging portions 18d and 19d are partially overlapped in the axial direction so as to surround the blade 20, so that the bulging portions 18d and 19d
A gap is not generated in the axial direction between 9d and the blade 20, and it is possible to prevent wire dust from being caught.

The left and right planetary gear mechanisms 26, 27 are shown in FIG.
As shown in FIGS. 6 to 9, all have the same configuration. That is, the stepped shaft portions 24 at the left and right ends of the power transmission shaft 24
sun gears 34 and 35 fixed to b and 24c, respectively
And a plurality of planetary gears 36a, 36b, 36c and 37a, 37b, 37c that mesh with these sun gears 34, 35.
And the second bulging portions 1 provided on the outer end portions of the main bodies 18a and 19a of the second and third rotary cleaning bodies 18 and 19 serving as driven shafts.
The planet gears 36a, 36b, 36c and 37 are fitted and fixed in the end face recessed portions 18f and 19f of 8e and 19e, respectively.
Internal gears 38, 39 meshing with a, 37b, 37c, and planetary gears 36a, 36b, 36c and 37a, 37b, 3
A plurality of gear mounting shafts 41a, 4 for rotatably supporting 7c
1b, 41c and 42a, 42b, 42c, and fixed walls 43, 44 made of metal (for example, aluminum alloy) having high thermal conductivity, which covers the outer openings of the end face recesses 18f, 19f,
Each of the internal gears 38, 39 is arranged on the side facing the fixed walls 43, 44, respectively.
a, 36b, 36c and 37a, 37b, 37c are gear mounting shafts 41a, 41b, 41c and 42a, 42b,
Plates 45 and 46 that prevent it from falling off from 42c
And the second and third rotary cleaning bodies 18, 19
However, according to the speed reduction ratio determined by the number of teeth of each of the sun gears 34, 35 and the internal gears 38, 39, the first rotation cleaning body 17 is rotated in the opposite direction at a slower speed than the rotation speed thereof. .

Further, each of the fixed walls 43, 44 has a rectangular convex portion 43 projecting outward at the center of the outer end surface thereof.
a and 44a are provided so as to extend, and annular grooves 43b and 44b are formed on the outer peripheries thereof, and the power transmission shaft 24 is provided at the center of each rectangular convex portion 43a and 44a.
Bearings 47, 48 such as oil-impregnated metal for rotatably supporting
Has been press-fitted. Then, the rectangular convex portion 43a of the fixed wall 43 located on the left side is covered with a rectangular holder 52 having a protrusion 51 for engaging with the annular groove 43b, and the rectangular holder 52 is formed in the suction tool body. By being removably fitted in a rectangular recess (not shown), the left fixed wall 43 is fixed to the suction tool body side. A C spring 54 for preventing the left planetary gear mechanism 26 from slipping off is attached to the left end of the power transmission shaft 24 via a washer 53 as a sliding member as shown in FIG.

Further, the rectangular convex portion 44a of the fixed wall 44 located on the right side is directly fitted into the slit 56 formed in the inner wall 55 of the suction tool body, whereby the right fixed wall 44 is sucked. It is designed to be fixed to the body side. The shaft-side pulley 23 is attached to the second stage shaft portion 24d of the power transmission shaft 24 via a washer 59a which is a sliding member.
Washer is attached to the outer end side thereof, and a rectangular holder 57 having a locking projection 57a as shown in FIG.
The rectangular holder 57 is detachably fitted into a rectangular recess (not shown) formed on the outer wall of the suction tool body so that the shaft-side pulley 23 can be supported on both sides. There is.

Thus, the left and right planetary gear mechanisms 26, 27 are
Is supported on the suction tool main body side via bearings 47 and 48, so that variations in the shafts of the gears are suppressed, misalignment does not occur, and abnormal noise and friction are suppressed. You can Further, by supporting the outside of each of the left and right planetary gear mechanisms 26, 27 on the suction tool body side, the planetary gear mechanisms 26, 27 are moved to the bottom opening 1 of the suction tool 11 as shown in FIG.
It can be installed by being exposed in the second area, that is, in the air passage. Therefore, each planetary gear mechanism 2 is installed in the suction tool body.
It is not necessary to provide a space or a wall for accommodating the entire 6, 27, and the height of the suction tool main body can be compressed accordingly, and cleaning of a narrow space such as under a bed can be performed. Furthermore, since the fixed walls 43 and 44 are made of a metal having a high thermal conductivity (for example, an aluminum alloy), the fixed walls 43 and 44 are combined with the cooling effect by the above-mentioned arrangement of the exposed planetary gear mechanisms 26 and 27 in the air passage. The heat generation can be suppressed.

Further, the fixed walls 43, 44 are provided on their outer circumferences with the main bodies 18a of the second and third rotary cleaning bodies 18, 19, respectively.
Gear covers 61 and 62 are attached to cover the respective second bulges 18e and 19e of 19a. The gear covers 61, 62 are attached by fitting projections 43c, 44c provided at a plurality of locations on the outer periphery of each fixed wall into recesses 61a, 62a on the gear covers 61, 62 side. The gear covers 61,
Marks 61b and 62b are provided on the outer circumference of 62, respectively. Furthermore, at the inner ends of the gear covers 61 and 62,
Inward flanges 61c and 62c are formed, respectively, so that dust, sand and the like are unlikely to enter inside.

Further, as shown in FIGS. 8 and 9, the outer surfaces of the second bulging portions 18e and 19e of the second and third rotary cleaning bodies 18 and 19 are spaced from the inner surfaces of the gear covers 61 and 62, respectively. The annular ribs 18g and 19g having the clearance adjusting function and the grease pop-out preventing wall function are formed, and the second bulging portions 18e and 19e of the second and third rotary cleaning bodies 18 and 19 are formed in the gear covers 61 and 62. The gear housing space surrounded by the fixed walls 43 and 44 is filled with dustproof grease. Each of the second bulging portions 18e and 19e is provided with axial grooves 18h and 19h as shown in FIG. As shown in FIG. 7, projections 38a and 39a which can be fitted into the grooves 18h and 19h are formed in the axial direction at a plurality of positions on the outer peripheral surfaces of the shafts 38 and 39, respectively.
By engaging the grooves 18h and 19h with the ridges 38a and 39a, the main bodies 18a and 19a of the second and third rotary cleaning bodies 18 and 19 and the internal gears 38 and 39 are integrated. Has become.

The outer sides of the planetary gear mechanisms 26 and 27 are covered with gear covers 61 and 62, respectively, and the gear covers 61 and 62 and the internal rotating body (the second bulging portion 1) are covered.
8e, 19e) clearance between the annular rib 18
g and 19g, set to the minimum, and the gear storage space is filled with dustproof grease.
It is possible to prevent dust and sand from entering the inside,
It is also possible to prevent grease from scattering.

In the suction tool of the electric vacuum cleaner of the present embodiment having the above-mentioned structure, the rotary cleaning body 16 is assembled in sequence after the components shown in FIG. 1 are assembled into several assemblies. First, the bearings 31a, 31 are provided at both ends of the main bodies 18a, 19a of the second and third rotary cleaning bodies 18, 19, respectively.
b and 31c, 31d are press-fitted into each main body 18a,
On the outer circumference of 19a, from the inner end of the gear cover 6
Insert 1, 62. Then, the respective main bodies 17a, 18a, 19 of the first, second, and third rotary cleaning bodies 17, 18, 19
After the blades 20 are attached to a, the dust remover falling prevention covers 32, 32 are attached to both ends of the main body 17a of the first rotary cleaning body 17, respectively. As a result,
The assembly of the second and third rotary cleaning bodies 17, 18, 19 is completed.

Next, an assembly of the left and right planetary gear mechanisms 26, 27 is manufactured. First, the bearings 47, 48 are press-fitted into the central portions of the rectangular convex portions 43a, 44a of the fixed walls 43, 44, and then the gear mounting shafts 41a, 4 of the fixed walls 43, 44 are attached.
1b, 41c and 42a, 42b, 42c have planetary gears 36a, 36b, 36c and 37a, 37b, respectively.
Install 37c. Next, the internal gears 38 and 39 are replaced with the planetary gears 36a, 36b, 36c and 37a, 37, respectively.
After attaching to the fixed walls 43 and 44 side while meshing with b and 37c, the plate 4 is filled with dustproof grease.
The opening is closed at 5,46. As a result, the assembly of the left and right planetary gear mechanisms 26, 27 is completed.

As described above, the assembly of the first, second and third rotary cleaning bodies 17, 18 and 19 and the left and right planetary gear mechanisms 2 are arranged.
When the assembly of 6, 27 is completed, these are assembled into the power transmission shaft 2
Assemble to 4. First, the assembly of the first rotary cleaning body 17 is press-fitted into the central portion of the power transmission shaft 24. Next, the assembly of the second and third rotary cleaning bodies 18 and 19 is provided on both sides of the first rotary cleaning body 17 at the inner cylindrical portions 33e and 33e of the side dust removers 33 and 33, respectively. Insert the dust remover falling prevention covers 32, 32 until they are fitted.

Next, the second and third parts of the power transmission shaft 24
On the step shaft portions 24b and 24c on both sides of the rotary cleaning bodies 18 and 19,
While press-fitting the sun gears 34 and 35 until they come into contact with the stepped portions, and then press-fitting the assemblies of the left and right planetary gear mechanisms 26 and 27 to which the bearings 47 and 48 are attached, the inner gears 38 and 39 on the outer periphery The ridges 38a and 39a are used as the second bulging portions 18e and 19 of the second and third rotary cleaning bodies 18 and 19, respectively.
Fit into the grooves 18h and 19h of e, and simultaneously each planetary gear 3
6a, 36b, 36c and 37a, 37b, 37c are meshed with the respective sun gears 34, 35. Then, the gear covers 61 and 62 are attached to the fixed walls 43 and 44, respectively.

Thereafter, the shaft side pulley 23 is press-fitted into the second stage shaft portion 24d at the right end of the power transmission shaft 24 via the washer 59a, and then the rectangular holder 57 mounted on the bearing 58 via the washer 59b. Press fit.

As described above, in the suction tool of the electric vacuum cleaner according to the present embodiment, when the rotary cleaning body 16 is assembled, it is sufficient to assemble the constituent parts into several assemblies and then to assemble them sequentially. The property is improved.

Embodiment 2. FIG. 10 shows claims 1 to 3 of the present invention.
It is a perspective view which shows an example of the rotary cleaning body which is the principal part of the suction tool of the vacuum cleaner which concerns on 3 and 5-13, and is the above-mentioned 1st in the figure.
The same parts as those in the embodiment are designated by the same reference numerals.

The suction tool of the electric vacuum cleaner according to the present embodiment includes the main bodies 17a, 18a and 19a of the first, second and third rotary cleaning bodies 17, 18A and 19A of the rotary cleaning body 16A.
T-shaped dust remover mounting grooves 17b, 71, formed on the peripheral surface of the
The line 72 is formed parallel to the main body axial direction on the side of the first rotary cleaning body 17 as in the first embodiment, but on the side of the second and third rotary cleaning bodies 18A and 19A, Is also formed in a spiral shape whose angle is set in the direction of collecting dust on the floor in the center with respect to the rotation direction, and each blade 20 on the second and third rotary cleaning bodies 18A, 19A side
The lines A and 20B are also characterized in that an angle is set in the direction of collecting dust on the floor in the center with respect to the rotation direction, and the other configurations are all the same as those of the first embodiment described above. Is.

As described above, in the present embodiment, the blades 20A of the second and third rotary cleaning bodies 18A and 19A,
Since the angle of 20B is set to the direction in which the dust on the floor is collected in the center with respect to the rotation direction, in addition to the effect of the first embodiment described above, the suction port 1 at the rear of the center part from both sides is provided.
The dust can be scraped out toward 3, and the cleaning efficiency is improved.

Embodiment 3. FIG. 11 shows claims 1 to 3 of the present invention.
The bottom view which shows the other example of the suction tool of the vacuum cleaner which concerns on 3, 5-13, FIG. 12 is a perspective view which shows the suction tool which incorporated the completed rotary cleaning body in the state which removed the upper cover, In each figure, the same parts as those in the first embodiment described above are designated by the same reference numerals.

The suction tool of the electric vacuum cleaner according to the present embodiment has the main body 17a, 18a, 19a of the first, second and third rotary cleaning bodies 17, 18B, 19B in the rotary cleaning body 16B.
T-shaped dust remover mounting grooves 17b, 81 formed on the peripheral surface of the
The line 82 is formed parallel to the main body axial direction on the side of the first rotary cleaning body 17 as in the above-described first embodiment, but on the side of the second and third rotary cleaning bodies 18B and 19B, Is also set in such a direction that the dust on the floor is collected in the center with respect to the rotation direction, the angle on the side far from the central suction port 13 is large, and the angle on the side close to the central suction port 13 is gentle, The line of each of the blades 20C and 20D on the second and third rotary cleaning bodies 18B and 19B is also characterized in that the angle is set in the direction of collecting dust on the floor in the center with respect to the rotation direction. The configuration other than that is the same as that of the first embodiment.

As described above, in the present embodiment, the blades 20C of the second and third rotary cleaning bodies 18B and 19B,
20D is set to collect dust on the floor in the center with respect to the rotation direction, and the angle on the side far from the central suction port 13 is large and the angle on the side near the central suction port 13 is gentle. Therefore, in addition to the effect of the second embodiment described above, the efficiency of cleaning the dust from both sides toward the suction port 13 at the rear of the central portion is further improved.

Incidentally, the second and third rotary cleaning bodies 18B, 19
B may be divided into two parts, and after the dust remover mounting grooves 81 and 82 are formed, the divided parts may be integrated.
By adopting such a divided configuration, the dust remover mounting groove 8
The formation of 1, 82 is facilitated.

Embodiment 4. 13 and 14 are explanatory views of the operation of the rotary cleaning body in the suction tool of the electric vacuum cleaner according to claims 1 to 14 of the present invention. In the drawings, the parts corresponding to those of the first embodiment described above are shown. Are given the same reference numerals.

The suction tool of the electric vacuum cleaner according to the present embodiment reverses the motor for driving the power transmission shaft for a certain period of time.

In this way, by reversing the motor for driving the power transmission shaft for a certain period of time, for example, a yarn or hair entwined between the first and second rotary cleaning bodies 17 and 18 can be obtained. It is possible to loosen the line-shaped dust 91.

[0056]

As described above, according to the first aspect of the present invention, a rotary cleaning member having a three-part structure is provided with a single stepped shaft having a thick central portion and a diameter that decreases toward both ends. First mounted on the power transmission shaft and located in the center
Power is directly transmitted from the power transmission shaft to the rotary cleaning body, and power is transmitted to the second and third rotary cleaning bodies located on both sides of the rotary cleaning body via the gear mechanism at the reduced diameter portions at both ends of the power transmission shaft. The second and third rotary cleaning bodies and the first rotary cleaning body are configured to rotate in the opposite directions to each other by transmitting the power. As a result, a rotary cleaning body was obtained in which the transmission shaft) could be a single shaft, there was no misalignment, there was no shaking, and it was quiet and could reduce power loss.

According to the second aspect of the invention, the outer diameter of the main body of the first rotary cleaning body located at the center is smaller than the outer diameter of the main bodies of the second and third rotary cleaning bodies located on both sides. Since it is also set to a small diameter, the air passage in front of the central suction port can be expanded more than both sides, reducing wind speed and air volume loss,
It did not obstruct the flow of wind and was able to smoothly flow large dust toward the central suction port.

According to the third aspect of the present invention, the circumferential surface of each main body of the first, second and third rotary cleaning bodies is provided at a plurality of positions in the circumferential direction.
At least one of the peripheral surfaces of the main body, which is formed between the duster mounting grooves on the side of the first rotary cleaning body and which is formed at the center thereof, is formed with a duster mounting groove for penetrating the dust collector in the longitudinal direction of the main body. Since both ends of the peripheral surface are provided with a dust cutting groove into which a blade of a cutting tool for cutting wound line filament dust can be fitted, filament dust such as yarn or hair entwined with the first rotary cleaning body is provided. Could be easily cut using a cutting tool such as scissors or a cutter.

Further, according to the invention of claim 4, the dust remover mounting grooves of the first, second and third rotary cleaning bodies are all formed parallel to the axial direction of the main body of the rotary cleaning bodies. During cleaning, the hair of a carpet or the like can be swung back and forth in a 180 ° direction, improving the dust collection efficiency.

Further, according to the invention of claim 5, the dust remover mounting groove on the side of the first rotary cleaning body located in the center is formed parallel to the axial direction of the main body, and the second and the second located on both sides. Three
Each dust cleaner mounting groove on the rotary cleaning body side is formed in a spiral shape with an angle set in the direction of collecting dust on the floor in the center with respect to the rotation direction, and these spiral dust collector mounting grooves Has a large angle on the side far from the central suction port and a gentle angle on the side close to the central suction port, so it is possible to scrape out dust from both sides toward the suction port at the rear of the central part. , Cleaning efficiency improved.

According to the invention of claim 6, a flange-shaped thread entanglement prevention wall having a notch for attaching a dust remover and a notch for dust cutting is provided at both ends of the main body of the first rotary cleaning body located at the center. Since the above-mentioned structure is provided, even if filamentous dust such as thread or hair is entangled, the filamentous dust can be prevented from entering the power transmission shaft side.

Further, according to the invention of claim 7, since the dust removal stoppers capable of fitting with the thread entanglement prevention walls are provided at both ends of the first rotary cleaning body located at the center, the dust removal means is provided. The mounting condition of is stable.

Further, according to the invention of claim 8, the dust remover falling prevention lid is attached to each of the end portions of the second and third rotary cleaning bodies which face both end surfaces of the first rotary cleaning body. Since the side dust remover prevention member that prevents the dust removers on the second and third rotary cleaning bodies from falling off is provided integrally with and slidably with the first rotary cleaning body, a gap between the rotary cleaning bodies is provided. Could be compressed.

Further, according to the invention of claim 9, the axial length of the dust remover on the side of the first rotary cleaning body located in the center is substantially the same as the width of the central suction port located behind it. Since it is set to 1, dust can be directly scraped from the first rotary cleaning body to the central suction port, and the dust suction efficiency is improved.

According to the invention of claim 10, planetary gear mechanisms are used as gear mechanisms for transmitting power to the second and third rotary cleaning bodies located on both sides, respectively, and the planetary gear mechanism is configured to transmit power. The sun gear fixed to the reduced diameter portion of the end of the shaft, the plurality of planetary gears meshing with the sun gear, and the bulging portions provided on the outer ends of the first and second rotary cleaning bodies that are the driven shafts. Since an internal gear that is fitted and fixed in the end face recess and meshes with the planetary gear, and a plurality of gear mounting shafts that rotatably support each planetary gear, and a fixed wall that covers the opening of the recess, It was possible to smoothly rotate the first rotary cleaning body and the second and third rotary cleaning bodies on both sides thereof in opposite directions.

According to the eleventh aspect of the present invention, the gear cover for covering the bulging portions of the first and second rotary cleaning bodies from the outside is attached to the outer periphery of the fixed wall, and the first and second rotary cleaning bodies have the same structure. On the outer peripheral surface of the bulging portion, an annular rib having a clearance adjusting function with the inner surface of the gear cover and a function of preventing the grease from protruding is formed, and the bulging portion and the fixed wall of the first and second rotary cleaning bodies are formed in the gear cover. Since the gear housing space surrounded by and is filled with dustproof grease, it is possible to prevent dust, sand, and the like from entering the inside, and also to prevent the grease from scattering.

According to the twelfth aspect of the present invention, the fixed wall is made of a metal having a high thermal conductivity, and the outer surface of the fixed wall is provided with a rectangular convex portion that is restrained by the main body of the suction tool. Since the bearing that rotatably supports the power transmission shaft is press-fitted in the center of the part, variations in the shafts of the gears are suppressed, misalignment does not occur, and abnormal noise and friction can be suppressed. ,
Furthermore, the generated heat could be efficiently released to the outside.

According to the thirteenth aspect of the invention, the planetary gear mechanism portion surrounded by the fixed wall and the gear cover in a box shape is exposed in the bottom opening area of the suction tool.
Combined with the heat dissipation effect of metal with high thermal conductivity, we were able to suppress heat generation.

According to the fourteenth aspect of the invention, since the motor for driving the power transmission shaft is rotated in the reverse direction for a certain period of time, the yarn entwined between the rotary cleaning bodies rotating in opposite directions to each other. I was able to remove streak-like dust like hair.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a rotary cleaning body that is a main part of a suction tool of an electric vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state of a rotary cleaning body after completion of assembly, which is a main part of a suction tool of the electric vacuum cleaner according to the first embodiment.

FIG. 3 is a bottom view showing a state in which the completed rotary cleaning body is incorporated in the suction tool of the electric vacuum cleaner according to the first embodiment.

FIG. 4 is a perspective view showing the suction tool of the electric vacuum cleaner according to the first embodiment with the upper cover removed.

5 is a sectional view taken along the line AA of FIG.

FIG. 6 is a front cross-sectional view showing a completed rotary cleaning body of the suction tool of the electric vacuum cleaner according to the first embodiment.

FIG. 7 is an exploded perspective view showing a planetary gear mechanism that transmits power to the side rotary cleaning body of the suction tool of the vacuum cleaner according to the first embodiment.

FIG. 8 is a cross-sectional view showing the relationship between the rotary cleaning body on the left side of the suction tool of the vacuum cleaner according to the first embodiment, the power transmission shaft, and the planetary gear mechanism.

FIG. 9 is a cross-sectional view showing the relationship between the rotary cleaning body on the right side of the suction tool of the vacuum cleaner according to the first embodiment, the power transmission shaft, and the planetary gear mechanism.

FIG. 10 is a perspective view showing a rotary cleaning body that is a main part of a suction tool of an electric vacuum cleaner according to a second embodiment of the present invention.

FIG. 11 is a bottom view showing the suction tool of the electric vacuum cleaner according to the third embodiment of the present invention.

FIG. 12 is a perspective view showing a suction tool of an electric vacuum cleaner according to a third embodiment with an upper cover removed.

FIG. 13 is an explanatory diagram of the operation of the rotary cleaning body in the suction tool of the vacuum cleaner according to the fourth embodiment of the present invention.

FIG. 14 is an explanatory diagram of the operation of the rotary cleaning body in the suction tool of the electric vacuum cleaner according to the fourth embodiment.

FIG. 15 is a bottom cross-sectional view showing a suction tool of a conventional electric vacuum cleaner.

[Explanation of symbols]

11 suction tool, 12 bottom opening, 13 central suction port, 1
6, 16A, 16B rotary cleaning body, 17 1st rotary cleaning body, 17a 1st rotary cleaning body, 17b, 18b,
19b Dust removal mounting groove (parallel groove in the axial direction), 17c Dust cutting groove, 17d Dust removal mounting notch, 17e Dust cutting notch, 17f Thread entanglement prevention wall, 18, 18
A, 18B 2nd rotation cleaning body, 18a 2nd rotation cleaning body main body, 18e, 19e 2nd bulging part (bulging part), 1
8f, 19f end face concave portion, 18g, 19g annular rib,
19, 19A, 19B 3rd rotary cleaning body, 19a 3rd
Rotating cleaning body, 20, 20A, 20B, 20C, 2
0D blade (dust remover), 21 motor, 24 single power transmission shaft, 24b, 24c step shaft portion (reduced diameter portion) of power transmission shaft, 26, 27 planetary gear mechanism (gear mechanism),
32 dust remover fall prevention lid, 33 side dust remover fall prevention member, 34, 35 sun gear, 36a, 36b, 3
6c, 37a, 37b, 37c Planetary gears, 38, 39
Internal gears, 41a, 41b, 41c, 42a, 42b,
42c Gear mounting shaft, 43, 44 Fixed wall, 43a, 4
4a Rectangular projection, 47, 48 bearing, 61, 62 gear cover, 71, 72, 81, 82 dust remover mounting groove (spiral groove), 91 wire dust.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masafumi Oki             1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1728               Within Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Tomoki Kobayashi             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. (72) Inventor Akihiko Kobayashi             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. (72) Inventor Sekine Kazunori             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. (72) Inventor Daisuke Sakai             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. F-term (reference) 3B061 AD06 AE02 AE13

Claims (14)

[Claims] 1. A suction tool for an electric vacuum cleaner, wherein a rotary cleaning body of a three-division structure is coaxially provided in a bottom opening, wherein the rotary cleaning body of the three-division structure has a large diameter in a central portion. The first rotary cleaning body, which is attached through a single power transmission shaft composed of a step shaft whose diameter decreases toward both ends and is located at the center, receives power directly from the power transmission shaft, The second and third rotary cleaning bodies located on the side,
Power is transmitted to the reduced diameter portions at both ends of the power transmission shaft via a gear mechanism so that the second and third rotary cleaning bodies and the first rotary cleaning body rotate in mutually opposite directions. A vacuum cleaner suction device characterized by being formed. 2. The outer diameter of the main body of the first rotary cleaning body located at the center is set to be smaller than the outer diameter of each main body of the second and third rotary cleaning bodies located on both sides. The suction tool of the vacuum cleaner according to claim 1. 3. A dust remover mounting groove penetrating in the longitudinal direction of the main body for attaching a dust remover is formed at a plurality of circumferential positions of each main body circumferential surface of each of the first, second and third rotary cleaning bodies. At the same time, at the both end positions of at least one peripheral surface of the main body peripheral surface existing between the dust removing element mounting grooves on the side of the first rotary cleaning body located at the center, The suction tool of the vacuum cleaner according to claim 1 or 2, further comprising a dust cutting groove into which the blade can be fitted. 4. The dust remover mounting groove of each of the first, second and third rotary cleaning bodies is formed parallel to the axial direction of the main body of each rotary cleaning body. Vacuum cleaner suction tool as described. 5. The dust remover mounting groove on the side of the first rotary cleaning body located in the center is formed parallel to the axial direction of the main body, and each dust remover mounting on the side of the second and third rotary cleaning bodies is located on both sides. Each of the grooves for use is formed in a spiral shape with an angle set in the direction of collecting dust on the floor in the center with respect to the direction of rotation, and these spiral dust removal device mounting grooves are located on the side farther from the central suction port. 4. The suction tool for an electric vacuum cleaner according to claim 3, wherein the angle is large and the angle on the side close to the central suction port is set to be gentle. 6. A flange-shaped thread entanglement prevention wall having cutouts for attaching a dust remover and cutouts for cutting dust is provided at both ends of the main body of the first rotary cleaning body located at the center. A suction tool for an electric vacuum cleaner according to any one of claims 3 to 5. 7. The vacuum cleaner according to claim 6, wherein a dust removal stopper lid that can be fitted to the thread entanglement prevention walls is provided at both ends of the first rotary cleaning body located at the center. Suction tool. 8. A dust dropout prevention cover is attached to each of the end portions of the second and third rotary cleaning bodies that face both end surfaces of the first rotary cleaning body, and is attached to each of the second and third rotary cleaning body sides. 8. The suction tool for an electric vacuum cleaner according to claim 7, wherein the dust remover is provided integrally with a side dust remover prevention member that prevents the dust remover from coming off and slidably with respect to the first rotary cleaning body. 9. The axial length of the dust remover on the side of the first rotary cleaning body located in the center is set to be substantially the same as the width of the central suction port located behind it. A suction tool for an electric vacuum cleaner according to any one of claims 1 to 8. 10. A planetary gear mechanism is used as a gear mechanism for transmitting power to each of the second and third rotary cleaning bodies located on both sides, and the planetary gear mechanism is a reduced diameter portion at an end portion of a power transmission shaft. A sun gear fixed to the sun gear, a plurality of planetary gears meshing with the sun gear, and a fixed shaft fitted and fixed in an end face concave portion of a bulge portion provided on an outer end portion of the second and third rotary cleaning bodies serving as driven shafts. And a fixed wall that has a plurality of gear mounting shafts that rotatably support the planet gears and that covers the opening of the recess. The suction tool of the vacuum cleaner according to 1. 11. A gear cover that covers the bulging portions of the second and third rotary cleaning bodies from the outside is attached to the outer periphery of the fixed wall, and the outer peripheral surfaces of the bulging portions of the second and third rotary cleaning bodies are provided. An annular rib having a clearance adjusting function with the inner surface of the gear cover and a grease protrusion preventing wall function is formed, and is surrounded by the bulging portions of the second and third rotary cleaning bodies and the fixed wall in the gear cover. The suction tool for an electric vacuum cleaner according to claim 10, wherein the gear housing space is filled with dustproof grease. 12. The fixed wall is made of a metal having a high thermal conductivity, and a rectangular convex portion to be restrained by the suction tool body side is provided on the outer surface of the fixed wall, and a power transmission shaft is provided at the center of the rectangular convex portion. A suction tool for an electric vacuum cleaner according to claim 10 or 11, wherein a bearing that rotatably supports is press-fitted. 13. The suction tool for a vacuum cleaner according to claim 12, wherein a planetary gear mechanism portion surrounded by a fixed wall and a gear cover in a box shape is exposed in a bottom opening area of the suction tool. . 14. The motor for driving the power transmission shaft is reversely rotated for a certain period of time every certain period of time.
A suction tool for an electric vacuum cleaner according to claim 13.