JPH0947402A - Suction nozzle body for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction nozzle body capable of raking up dust or the like on the floor over a wide area where the lower side of the nozzle body comes in contact with, while an increase in the height thereof being restrained, and ensuring high cleaning and space efficiency as well as suction efficiency. SOLUTION: A pair of rotation cleaning bodies 5 and 5 rotatable in a different direction are arranged approximately in parallel to a floor, and an electric motor 6 is provided between the rotation cleaning bodies 5 and 5. Also, a transmission means is provided for transmitting the torque of the electric motor 6 to each of the rotation cleaning bodies 5 and 5. In addition, the transmission means is equipped with a partial output gear having the first and the second output shafts rotating under the rotation drive force of the electric motor 6 and a belt drive part 24 having two timing belts 25 for transmitting the rotation of each of the first and the second output shafts to each of the rotation cleaning bodies 5 and 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a suction port body of an electric vacuum cleaner, which is characterized by including a plurality of rotary cleaning bodies.

[0002]

2. Description of the Related Art As a conventional suction inlet of this type, for example, the one disclosed in Japanese Patent Application Laid-Open No. 5-1111449 as shown in FIGS. 3 and 4 is known.

In such a structure, a substantially box-shaped suction port body 3 is rotatably connected about a rotary shaft 4 to a tip 2 of a connecting pipe 1 connected to the main body of the electric vacuum cleaner. ing.

Inside the suction port body 3, a pair of rotary cleaning bodies 5, which scrape up dust and the like on the floor surface to the front position by rotation.
5 are arranged adjacent to each other so as to be substantially parallel to the floor surface. Transmission gears 5a, 5a meshing with each other are arranged on the shaft portions 5b, 5b of the rotary cleaning bodies 5, 5, respectively.
I try to rotate in the opposite direction.

An electric motor 6 as a driving means is arranged at the rear position of the pair of rotary cleaning bodies.
The electric motor 6 is arranged so as to be substantially parallel to the rotary cleaning bodies 5 and 5 in order to suppress an increase in height in the vertical direction.

A pulley 8 is provided on a rotary shaft 7 of the electric motor 6 and is connected to a pulley 9 fixed to a shaft portion 5b of the one rotary cleaning body 5 via a timing belt 10. .

In the conventional suction port body 3 constructed as described above, the rotary cleaning bodies 5 and 5 are directed inward through the pulley 8, the timing belt 10 and the pulley 9 by the rotational driving of the electric motor 6. Rotate in the opposite direction to scrape up.

By the rotation of the rotary cleaning bodies 5 and 5, dust and the like on the floor surface are scraped up, sucked from the tip 2 of the connecting pipe 1 and sent to the vacuum cleaner body. .

[0009]

However, in such a conventional suction port body, since the electric motor 6 as the driving means is disposed at the rear position of the suction port body 3, this electric motor mounting portion is provided. That is, there is a problem that dust on the floor surface in contact with the latter half of the suction port body 3 is hard to be scraped up.

The rotary cleaning bodies 5 and 5 are connected by transmission gears 5a and 5a so as to rotate in mutually opposite directions. There is a limit to the expansion of the diameters of the transmission gears 5a and 5a, and it is difficult to set a large interval between the rotary cleaning bodies 5 and 5. Therefore, since the tip 2 of the connecting pipe 1 is disposed at a position rearward of the both rotary cleaning bodies 5, 5, dust and the like scraped up by the both rotary cleaning bodies 5, 5 are removed as shown in FIG. ,
It is easy to stay in the upper space 11 between the rotary cleaning bodies 5 and 5.
Therefore, the suction efficiency was not good.

Since the electric motor 6 as a driving means is disposed at the rear position of the suction port body 3, the suction port body 3 is provided.
Of the electric motor 6 is formed to be large in the vertical direction by the height of the electric motor 6. Therefore, the portion where the electric motor 6 is disposed is projected to form the suction port body 3, or a margin corresponding to the height of the electric motor 6 is provided over the entire area of the suction port body 3 to form a box-like shape. The suction port body 3 must be formed in the mold shape,
It was hard to say that the space efficiency was good, and the appearance quality was not good.

Therefore, according to the present invention, dust and the like on the floor surface which the lower surface side of the suction port body contacts can be scraped up in a wide area while suppressing the increase in height, and the cleaning and space efficiency are good, and the suction efficiency is high. Another object is to provide a good suction mouth.

[0013]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, two rotary cleaning bodies having different rotation directions are arranged substantially parallel to the floor surface. In the provided suction port body, a drive means is arranged between the rotary cleaning bodies, and a transmission means for transmitting the rotational force of the drive means to each of the rotary cleaning bodies is provided. A component gear unit having two output shafts rotated by the rotational drive of the driving means, and a belt drive unit having two belts for transmitting the rotation of each output shaft to each rotary cleaning body are provided. It features a suction mouth.

According to the first aspect of the present invention, the driving means is arranged between the rotary cleaning bodies, so the rotary cleaning bodies can be arranged near the front and rear side edges of the suction port body. .

Therefore, dust and the like on the floor contacting the lower surface side of the suction port body can be scraped up in a wide area close to the total area of the lower surface side, and the cleaning efficiency is good. Further, the increase in height of the suction port body is suppressed, and the space efficiency is good.

The output shaft of the component gear unit and each rotary cleaning body are connected by a belt, and the rotation is transmitted. Therefore, both rotary cleaning bodies are separated from each other and the rotary cleaning bodies are separated from each other. ,
A space that faces the tip of the connecting pipe can be easily formed.

Therefore, for example, by arranging the tip of the connecting pipe between the rotary cleaning bodies so as to face the scraping direction, a space for accumulating dust or the like is not formed unlike the conventional case. The suction efficiency can be improved.

The second aspect of the present invention is characterized in that the two output shafts of the component force gear portion are arranged side by side in the vertical direction, and the suction port body is provided.

According to the second aspect of the present invention configured as above, since the two output shafts of the component gear unit are provided side by side in the vertical direction, the interval between the rotary cleaning members is narrowed. Also, a predetermined length of the belt of the belt drive unit can be secured.

Therefore, the size of the suction port body in the front-rear direction can be reduced while maintaining the maintainability and the durability of the belt, and the space efficiency is further improved.

Then, according to the third aspect,
Before and after the drive means, a pair of the rotary cleaning bodies are arranged so as to have a rotational direction of scraping inward, and the rotation speed of the front rotary cleaning body is the rotation speed of the rear rotary cleaning body. The suction port body according to claim 1 or 2 is set so as to be smaller than the above.

According to the third aspect of the present invention, the front rotary cleaning body of the pair of rotary cleaning bodies is pressed against the floor surface when the suction port body is advanced, but the load is ,
Since the traveling direction and the rotating direction coincide with each other, it does not become so large. In addition, the traveling direction and the rotation direction match with each other, which assists traveling. Further, the rear rotary cleaning body is not pressed into contact with the front rotary cleaning body when the suction port body is advanced. Therefore, even if the scraping ability is increased by rotating at a high speed, the load is not large and the influence on the driving means is small.

Therefore, the rear rotary cleaning body can scrape up and suck dust and the like on the floor that could not be completely scraped up by the front rotary cleaning body.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 of the present invention will be described below with reference to the drawings.

1 and 2 show the first embodiment of the present invention.
2 shows the suction port body of FIG. It should be noted that the same or equivalent portions as those of the conventional one will be described with the same reference numerals.

First, the structure will be described.
In the suction port body of No. 3, a substantially box-shaped suction port body 13 is rotatably connected to a tip end 2 of a connecting pipe 1 connected to the electric vacuum cleaner body side about a rotation shaft.

The suction port body 13 mainly includes a lower case 13a having an opening on the lower surface side, and the lower case 13a.
And the upper case 13 configured to have a substantially circular arc shape with a cross-sectional shape in the front-rear direction being the highest in the substantially central portion.
b.

Inside the suction port body 13, a pair of rotary cleaning bodies 5 and 5 for scraping dust on the floor surface by rotation are rotatably arranged so as to be substantially parallel to the floor surface. . Pulleys 9, 9 are fixed to the shaft portions 5b, 5b of the rotary cleaning bodies 5, 5, respectively.

Further, between the pair of rotary cleaning bodies 5 and 5, at an approximately intermediate position, an electric motor 6 as a driving means is provided.
Are disposed inside the upper case 13b at a substantially central portion thereof. This electric motor 6 has wiring and plug 14
The rotary shaft 7 is configured to be rotationally driven by electric power supplied from the cleaner body via the above.

On the front wall of the electric motor 6, a component force gear portion 15 as one of transmission means is provided by fixing a gear case 16 with screws 17 and 17.

As shown in FIG. 2, the component gear portion 15 has a pinion gear 18 fixed to the rotating shaft 7, a first reduction gear 19 meshing with the pinion gear 18, and a rotatable gear case 16. It is arranged so that
A first output shaft 20 to which this first reduction gear 19 is fixed, a component force gear 21 fixed to this first output shaft 20 along with the first reduction gear 19, and a second component gear 21 that meshes with this component force gear 21.
The reduction gear 22 and a second output shaft 20 of the gear case 16 which are arranged substantially vertically below the first output shaft 20 side by side with the first output shaft 20 in the vertical direction, and fixed to the second reduction gear 22.
The output shaft 23 is mainly included.

Of these, the gear ratio between the pinion gear 18 and the first reduction gear 19 is set to 1: 2. Also,
The gear ratio between the component gear 21 and the second reduction gear 22 is 1:
It is set to 1.2.

The tip portion 20a of the first output shaft 20 is provided so as to project from the gear case 16, and the pulley 8 of the belt drive portion 24 as one of the transmission means is fixed. The timing belt 2 wound around the pulley 9 of the rear rotary cleaning body 5 is wound around the pulley 8 of the tip portion 20a.
5 is wound to transmit the rotation of the first output shaft 20 to the rear rotary cleaning body 5.

The tip portion 23a of the second output shaft 23
Is provided so as to project from the gear case 16, and the pulley 8 of the belt drive unit 24 is fixedly attached thereto. The timing belt 25 wound around the pulley 9 of the front side rotation cleaning body 5 is wound around the pulley 8 of the tip portion 23a, and the rotation of the second output shaft 23 is transmitted to the front side rotation cleaning body 5. Is configured.

Next, the operation of the first embodiment will be described.

The electric motor 6 rotates the rotary shaft 7 by the supply of electric power from the main body of the cleaner, and the first output shaft 2 is rotated through the pinion gear 18 and the first reduction gear 19.
0 is reduced to 1/2 speed and rotated, and the rotational force separated by the component gear 21 is applied to the second reduction gear 2
The second output shaft 23 is further decelerated to a speed of 1 / 1.2 as compared with the first output shaft 20 via 2 and is rotated in the opposite direction.

The rotation of the first output shaft 20 and the second output shaft 23 causes the timing belt 25 of the belt drive section 24 to scrape the front and rear rotary cleaning bodies 5, 5 inward. So as to rotate in the opposite direction.

Therefore, the front rotary cleaning body 5 is decelerated to 1 / 1.2 speed as compared with the rear rotary cleaning body 5, and the deceleration is larger than the rear rotary cleaning body 5 by the torque. Rotate in increasing amounts.

Of the pair of front and rear rotary cleaning bodies 5, 5, the front rotary cleaning body 5 is pressed against the floor surface when the suction port body 13 is advanced, but the load is in the traveling direction and the rotating direction. And will match, so it will not be too big. In addition, the traveling direction and the rotation direction match with each other, which assists traveling. Further, the rear rotary cleaning body 5 is not pressed against the front rotary cleaning body 5 when the suction port body is advanced. Therefore, even if the scraping ability is increased by rotating at a high speed, the load is not large and the electric motor 6 is less affected.

Therefore, dust and the like on the floor surface that cannot be scraped up by the front rotary cleaning member 5 are cleaned by the rear rotary cleaning member 5.
However, it is possible to efficiently scrape and inhale while rotating in the direction opposite to the traveling direction.

Further, the electric motor 6 has the rotary cleaning members 5, 5
Since the rotary cleaning members 5 and 5 are disposed between the suction cleaning members 5, the rotary cleaning members 5 and 5 can be disposed near the front and rear side edges of the suction port body 13.

Therefore, dust and the like on the floor contacting the lower surface side of the suction port body 13 can be scraped up in a wide area close to the total area of the lower surface side. Therefore, the cleaning efficiency is good.

In the first embodiment, the electric motor 6 is disposed between the rotary cleaning bodies 5 and 5, so that
It is located inside the substantially central part which is the highest part of the upper case 13b. Therefore, the space efficiency in the suction port body 13 is good.

Moreover, since the cross-section in the front-rear direction of the upper case 13b can be formed so as to have a substantially arcuate shape in which the substantially central portion is the highest portion, the appearance quality is also good.

Further, since the electric motor 6 is arranged between the pair of rotary cleaning bodies 5 and 5, the increase in the size of the suction port body 13 in the height direction is suppressed. For this reason,
For example, the suction port body 13 can be inserted and cleaned in a space below the furniture where there is no room in the height direction.

Moreover, the first output shaft 20 of the component gear unit 15
Since the second output shaft 23 and the second output shaft 23 are arranged side by side in the vertical direction, an increase in the size of the suction port body 13 in the longitudinal direction is suppressed, and in this respect also, space efficiency in the suction port body 13 is reduced. Is good.

Then, the first output shaft 20 and the second output shaft 23
Are arranged side by side in the vertical direction, the rotary cleaning body 5 can be arranged by separating the timing belt 25 from the side end portion of the suction port body 13 by a distance substantially equal to the lateral width of the timing belt 25. It is possible to install, and the brush or the like of the rotary cleaning body 5 can bring the effective scraping portion that actually comes into rotary contact with the floor surface close to the side end portion of the suction port body 13.

Therefore, as compared with, for example, one in which the two timing belts 25, 25 are arranged side by side in the width direction, a large area close to the total area of the suction port body 13 on the lower surface side is provided. It is possible to scrape with 5, and in this respect also, the cleaning efficiency is good.

Further, since the first and second output shafts 20 and 23 of the component force gear portion 15 and the respective rotary cleaning bodies 5 and 5 are connected by the timing belts 25 and 25 to transmit the rotation, It is possible to easily form a space between the rotary cleaning bodies 5 and 5 by facing the tip 2 of the connecting pipe 1 by separating the rotary cleaning bodies 5 and 5 by a predetermined amount.

Therefore, as shown in FIG. 1 of the first embodiment, if the tip end 2 of the connecting pipe 1 is positioned between the rotary cleaning bodies 5 and 5 so as to face the scraping direction, the conventional method will be used. As described above, the space 11 shown in FIG. 4 for retaining the dust and the like is not formed, and the suction efficiency can be improved.

Further, since the first and second output shafts 20 and 23 of the component force gear portion 15 are arranged side by side in the vertical direction,
Even if the interval between the both rotary cleaning bodies 5, 5 is set to be narrow, the length of the timing belt 25 of the belt drive unit 24 can be secured by a predetermined amount.

Therefore, the timing belts 25, 25 can be easily attached to and detached from the pulleys 8, 9 and the maintainability is good. Moreover, since the first and second output shafts 22 and 23 are independently provided, each timing belt 2
It is possible to remove 5, 25 individually, and further maintainability is good.

The timing belt 25 is generally composed of an elastic member such as rubber. For this reason, it is known that reducing sharp bends is favorable for improving durability. Therefore, it is possible to obtain a predetermined length without using a belt tensioner pulley or the like that requires bending.

Therefore, the size of the suction port body 13 in the front-rear direction can be reduced while ensuring the durability and maintainability of the belt.

Moreover, the electric motor 6 having a predetermined weight
Can be provided at a substantially central position in the front-rear direction of the suction port body 13, so that the load acts substantially evenly on the lower case 13a and the front-rear direction of the suction port body 13 is well balanced.
It is possible to maintain good intervals between the rear rotary cleaning bodies 5 and 5 and the floor surface.

Therefore, for example, even if the members that come into contact with the floor surfaces of the front and rear rotary cleaning bodies 5 and 5 are made of different materials for different purposes, the balance in the front-rear direction is good. It is possible to show the operation of the rotary cleaning bodies 5 and 5 according to the purpose, and to improve the cleaning efficiency, since there is little possibility that an unexpected operation such as an increase in the load of the only one occurs.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and the present invention can be applied even if there is a design change or the like without departing from the gist of the present invention. include.

For example, in the first embodiment, the first and second output shafts 20 and 23 are arranged side by side in the vertical direction.
Not limited to this, for example, the first and second output shafts 20, 2
3 may be arranged diagonally or laterally, and may have any structure as long as it has two output shafts.

In the first embodiment, the rotational speed of the front rotary cleaning body 5 is set to be lower than the rotational speed of the rear rotary cleaning body 5. However, the present invention is not limited to this and, for example, Rotate at the same speed, or set the number of rotations of the front rotary cleaning body 5 to be higher than that of the rear rotary cleaning body 5, such as the shape of the rotary cleaning bodies 5 and 5 and the floor surface. It may be rotated at any ratio depending on the material of the contacting member.

In the first embodiment, the electric motor 6 is used as the driving means, but the driving means is not limited to this. For example, a fan that is rotated by air blown from the connecting pipe 1 into the cleaner body may be used. You may use.

[0061]

As described above, according to the first aspect of the present invention, since the drive means is disposed between the rotary cleaning bodies, the rotary cleaning body is the suction port body. It can be arranged near the front and rear edges.

Therefore, dust and the like on the floor which the lower surface side of the suction port body contacts can be scraped up in a wide area close to the total area of the lower surface side, and the cleaning efficiency is good. Further, the increase in height of the suction port body is suppressed, and the space efficiency is good.

Since the output shaft of the component gear unit and each rotary cleaning body are connected by a belt and the rotation is transmitted, both rotary cleaning bodies are separated from each other, and the rotation cleaning bodies are separated from each other. ,
A space that faces the tip of the connecting pipe can be easily formed.

Therefore, for example, by arranging the tip of the connecting pipe between the rotary cleaning bodies so as to face the scraping direction, a space for accumulating dust or the like is not formed unlike the conventional case. The suction efficiency can be improved.

Further, according to the second aspect of the invention, since the two output shafts of the component gear unit are arranged side by side in the vertical direction, even if the interval between the both rotary cleaning bodies is narrowed, the belt It is possible to secure a predetermined length of the belt of the drive section.

Therefore, the size of the suction port body in the front-rear direction can be reduced while maintaining the maintainability and the durability of the belt, and the space efficiency is further improved.

Then, according to the third aspect,
Of the pair of rotary cleaning bodies, the front rotary cleaning body is pressed against the floor surface when the suction port body moves forward, but the load does not become so large because the traveling direction and the rotating direction coincide with each other. In addition, the traveling direction and the rotation direction match with each other, which assists traveling. Further, the rear rotary cleaning body is not pressed into contact with the front rotary cleaning body when the suction port body is advanced. Therefore, even if the scraping ability is increased by rotating at a high speed, the load is not large and the influence on the driving means is small.

Therefore, in practical use, the rear rotary cleaning body can scrape up and suck dust, etc. on the floor surface that could not be completely scraped up by the front rotary cleaning body, more efficiently. Exert a beneficial effect.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view illustrating a suction port body of an electric vacuum cleaner according to a first embodiment of the present invention and illustrating a configuration of a main part as seen from a side surface.

FIG. 2 shows the suction port body according to the first embodiment, and is taken along line AA of FIG.
It is sectional drawing of the position along a line.

FIG. 3 is a backside plan view of a conventional suction port body.

FIG. 4 is a cross-sectional view showing a suction port body of a conventional example, taken along a line BB in FIG. It is a top view.

[Explanation of symbols]

 5 rotary cleaning body 6 electric motor (driving means) 8, 9 pulley 13 suction port body transmitting means 15 component force gear section 20 first output shaft 23 second output shaft 24 belt drive section 25 timing belt

Front page continuation (72) Inventor Shuhei Omoto 43 Horiyamashita, Hadano City, Kanagawa Prefecture

Claims (3)

[Claims] 1. A suction port body in which two rotary cleaning bodies having different rotation directions are disposed substantially parallel to a floor surface, and a drive means is disposed between the rotary cleaning bodies. Transmission means for transmitting the rotational force of the drive means to each of the rotary cleaning bodies is provided, and the transmission means includes a component gear section having two output shafts rotated by the rotational drive of the drive means, and And a belt drive unit having two belts for transmitting the rotation of the output shaft to each of the rotary cleaning bodies. 2. The suction port body according to claim 1, wherein the two output shafts of the component force gear portion are arranged side by side in the vertical direction. 3. A pair of the rotary cleaning bodies are arranged in front of and behind the drive means so as to have a rotational direction of scraping inward, and a rotation speed of the front rotary cleaning body is rear rotation. The suction port body according to claim 1 or 2, wherein the number of rotations of the cleaning body is set to be lower than that of the cleaning body.