JP3181494B2 - Suction port body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port of a vacuum cleaner, which comprises a plurality of rotary cleaning elements.

[0002]

2. Description of the Related Art As a conventional suction port of this type, for example, the one described in Japanese Patent Application Laid-Open No. 5-111449 as shown in FIGS. 3 and 4 is known.

[0003] In such a device, a substantially box-shaped suction opening 3 is rotatably connected to a tip 2 of a connecting pipe 1 connected to the main body of the electric vacuum cleaner about a rotation shaft 4. ing.

[0004] Inside the suction opening 3, a pair of rotary cleaning members 5, which are disposed at a front position and which scrapes up dust and the like on the floor surface by rotation.
5 are disposed adjacent to and substantially parallel to the floor surface. Transmission gears 5a, 5a meshing with each other are disposed on the shaft portions 5b, 5b of these rotary cleaning members 5, 5, respectively.
It rotates in the opposite direction.

[0005] An electric motor 6 as driving means is disposed at a rear position of the pair of rotary cleaning members.
The electric motor 6 is disposed so as to be substantially parallel to the rotary cleaning members 5 and 5 in order to suppress an increase in the 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 the shaft portion 5b of the one rotary cleaning body 5 via a timing belt 10. .

In the conventional suction opening 3 configured as described above, the rotary cleaning members 5 and 5 are directed inward through the pulley 8, the timing belt 10 and the pulley 9 by the rotation of the electric motor 6. Rotate in the opposite direction to scrape up.

By the rotation of the rotary cleaning members 5 and 5, dust on the floor surface is scraped up, sucked from the distal end 2 of the connecting pipe 1, and sent to the vacuum cleaner main body. .

[0009]

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

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

Since the electric motor 6 as a driving means is disposed at a position rearward of the suction opening 3, the suction opening 3 is provided.
Is formed to be large in the vertical direction by the height of the electric motor 6. For this reason, the suction port body 3 is formed by protruding the portion where the electric motor 6 is provided, 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 substantially box. The inlet body 3 must be formed in a mold shape,
It was hard to say that the space efficiency was good, and the appearance quality was not good.

In view of the above, according to the present invention, dust and the like on the floor surface contacting the lower surface side of the suction opening body are scraped up in a wide area while suppressing the increase in height, so that cleaning and space efficiency are good and suction efficiency is improved. Another object is to provide a good suction port body.

[0013]

According to the first aspect of the present invention, a pair of rotary cleaning members having different rotation directions are arranged so that their axial directions are parallel to each other.
A suction port disposed in the front and rear direction.
A driving means is provided between the pair of rotary cleaning bodies, and a transmission means for transmitting the rotational force of the driving means to each of the rotary cleaning bodies is provided, and the transmission means is rotated by the driving means. By engaging the fixed gears
And a component drive gear unit having two output shafts rotating in opposite directions, and a belt drive unit having two belts for transmitting rotation of each output shaft to each of the rotary cleaning members. It features a mouth.

According to the first aspect of the present invention, since the driving means is disposed between the pair of rotary cleaning members in the front-rear direction , each rotary cleaning member is disposed on the front and rear sides of the suction port. Each can be arranged near the edge.

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

The output shaft of the component gear unit and each of the rotary cleaning members are connected by a belt to transmit the rotation, so that the two rotary cleaning members are separated from each other, and are interposed between the rotary cleaning members. ,
It is possible to easily form a space facing the tip of the connection pipe.

For this reason, for example, if the tip of the connecting pipe is positioned between the rotary cleaning members so as to be opposed to the scraping direction, a space for retaining dust and the like as in the related art will not be formed. In addition, the suction efficiency can be improved.

According to a second aspect of the present invention, there is provided a suction port according to the first aspect, wherein the two output shafts of the component force gear are provided in a vertical direction.

According to the second aspect of the present invention, since the two output shafts of the component force gear portion are provided side by side in the vertical direction, the distance between the two rotary cleaning bodies is reduced. Also, a predetermined length of the belt of the belt drive unit can be secured.

For this reason, 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.

According to the third aspect of the present invention,
Before and after the driving means, a pair of the rotary cleaning bodies are disposed with a rotation direction of being swept inward, and the rotation speed of the front rotary cleaning body is set to the rotation speed of the rear rotary cleaning body. The suction port body according to claim 1 or 2, wherein the suction port body is set to be smaller than the above.

According to the third aspect of the present invention, of the pair of rotary cleaning members, the front rotary cleaning member is pressed against the floor surface when the suction opening is advanced, but the load is not increased. ,
Since the traveling direction coincides with the rotation direction, it does not become so large. In addition, when the traveling direction and the rotation direction coincide with each other, the traveling assistance is provided. Further, the rear rotating cleaning body is not pressed against the front rotary cleaning body when the suction opening body advances. For this reason, 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.

[0023] Therefore, the rear rotary cleaner can scrape up and suck in dust and the like on the floor surface that could not be completely lifted by the front rotary cleaner.

[0024]

Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show a first embodiment of the present invention.
FIG. The same or equivalent parts as those in the related art will be described with the same reference numerals.

First, the structure will be described.
In the suction port body, a substantially box-shaped suction port body 13 is rotatably connected to a distal end 2 of a connection pipe 1 connected to the vacuum cleaner main body side around a rotation axis.

The suction port 13 mainly includes a lower case 13a having an opening on the lower surface side, and a lower case 13a
The upper case 13 is formed so as to have a substantially circular arc shape in which the cross-sectional shape in the front-rear direction is the highest at the substantially central portion.
b.

Inside the suction opening 13, a pair of rotary cleaning members 5 and 5 for rotatably scraping dust and the like on the floor by rotation are disposed so as to be substantially parallel to the floor. . Pulleys 9, 9 are fixed to the shaft portions 5b, 5b of the rotary cleaning members 5, 5, respectively.

An electric motor 6 as a driving means is provided at a substantially intermediate position between the pair of rotary cleaning members 5 and 5.
Is disposed at a position inside a substantially central portion of the upper case 13b. The electric motor 6 includes a wiring and a plug 14.
The rotary shaft 7 is configured to be rotationally driven by electric power supplied from the cleaner body via the above-described components.

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 17,17.

As shown in FIG. 2, a pinion gear 18 fixed to the rotating shaft 7, a first reduction gear 19 meshing with the pinion gear 18, and the gear case 16 are rotatable on the component gear portion 15. It is arranged so that
A first output shaft 20 to which the first reduction gear 19 is fixed, a component gear 21 to be fixed to the first output shaft 20 alongside the first reduction gear 19, and a second gear meshing with the component gear 21
A second reduction gear 22 is provided at a position substantially below the first output shaft 20 of the reduction case 22 and the first output shaft 20 of the gear case 16, and is arranged vertically with the first output shaft 20.
It mainly comprises an output shaft 23.

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 distal end portion 20a of the first output shaft 20 is provided so as to protrude from the gear case 16, and the pulley 8 of the belt drive portion 24 as one of the transmitting means is fixed thereto. The timing belt 2 wound around the pulley 9 of the rear rotary cleaning body 5
5 is configured to be wound and transmit the rotation of the first output shaft 20 to the rear rotating cleaning body 5.

Also, a tip 23a of the second output shaft 23
Is provided so as to protrude from the gear case 16, and the pulley 8 of the belt drive unit 24 is fixed thereto. A timing belt 25 wound around the pulley 9 of the front-side rotating cleaning body 5 is wound around the pulley 8 at the distal end portion 23a, and transmits the rotation of the second output shaft 23 to the front-side rotating cleaning body 5. It is configured as follows.

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

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

The rotation of the first output shaft 20 and the second output shaft 23 causes the front and rear rotary cleaning members 5 and 5 to be moved inward by the timing belt 25 of the belt drive unit 24. As described above, the motor is driven to rotate in the opposite direction.

For this reason, the front-side rotating cleaning body 5 is reduced to a speed of 1 / 1.2 compared to the rear-side rotating cleaning body 5, and the deceleration is reduced by a torque corresponding to the reduced speed. Rotate in increasing amounts.

Of the pair of front and rear rotary cleaning members 5 and 5, the front rotary cleaning member 5 is pressed against the floor surface when the suction opening 13 moves forward. Does not become so large because they match. In addition, when the traveling direction and the rotation direction coincide with each other, the traveling assistance is provided. Further, the rear rotary cleaning member 5 is not pressed against the front rotary cleaning member 5 when the suction opening body advances. For this reason, even if the scraping ability is increased by rotating at high speed, the load is not large and the influence on the electric motor 6 is small.

For this reason, dust and the like on the floor surface which cannot be lifted up by the front rotary cleaning member 5 are removed.
However, while being rotated in the direction opposite to the traveling direction, it is possible to efficiently scrape and suck.

[0041] In addition, the electric motor 6, in the front-to-rear direction
Because it is arranged between a pair of rotary cleaning body 5,5, the times <br/> rotating cleaning element 5,5 may each <br/> disposed near the front and rear edges of the suction port body 13.

For this reason, dust and the like on the floor surface with which the lower surface side of the suction port body 13 comes into contact can be scraped up in a large 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 provided between the rotary cleaning members 5 and 5,
The upper case 13b is located inside a substantially central portion which is the highest portion. Therefore, the space efficiency in the suction opening 13 is good.

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

Further, since the electric motor 6 is disposed between the pair of rotary cleaning members 5, the height of the suction opening 13 in the height direction is suppressed. For this reason,
For example, the suction opening 13 can be inserted into a space where there is no room in the height direction below the furniture to clean the space.

Moreover, the first output shaft 20 of the component gear 15
And the second output shaft 23 are arranged side by side in the up-down direction, so that an increase in the size of the suction port body 13 in the longitudinal direction is suppressed, and also in this regard, the space efficiency in the suction port body 13 is also improved. Is good.

Then, the first output shaft 20 and the second output shaft 23
Are arranged in the up-down direction, so that the rotary cleaning body 5 is arranged by merely moving the distance of the substantially horizontal width of one timing belt 25 away from the side end of the suction opening body 13. It can be provided, and the brush or the like of the rotary cleaning body 5 can bring the effective scraping portion, which actually comes into contact with the floor surface, close to the side end of the suction opening body 13.

For this reason, for example, as compared with a case in which two timing belts 25, 25 are arranged side by side in the width direction, a large area closer to the total area on the lower surface side of the suction opening 13 is set to be larger. 5, the cleaning efficiency is good in this respect as well.

Further, since the first and second output shafts 20 and 23 of the component gear 15 and the rotary cleaning members 5 and 5 are connected by the timing belts 25 and 25, rotation is transmitted. By separating the two rotary cleaning members 5 and 5 by a predetermined amount, a space in which the front end 2 of the connecting pipe 1 is exposed can be easily formed between the rotary cleaning members 5 and 5.

For this reason, as shown in FIG. 1 of the first embodiment, if the distal end 2 of the connecting pipe 1 is positioned between the rotary cleaning members 5 and 5 so as to be opposed to the scraping direction, the conventional method can be used. Thus, the space 11 for retaining dust and the like as shown in FIG. 4 is not formed, and the suction efficiency can be improved.

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

For this reason, the timing belts 25, 25 can be easily attached to and detached from the pulleys 8, 9, and the maintenance property is good. Moreover, since the first and second output shafts 22 and 23 are provided independently, each timing belt 2
5, 25 can be removed individually, and the maintenance is good.

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

For this reason, the size of the suction opening 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 on the lower case 13a substantially uniformly, and the front-rear balance of the suction port body 13 is good.
The distance between the rear rotary cleaning bodies 5 and 5 and the floor surface can be maintained well.

For this reason, for example, even if the members that come into contact with the floor surfaces of the front and rear rotary cleaning members 5 and 5 are made of different materials for different purposes, the balance in the front-rear direction is good. It is less likely that an unexpected operation, such as an increase in the load of the rotary cleaning member, will occur, the operation of the rotary cleaning members 5 and 5 according to the purpose will be shown, and the cleaning efficiency can be improved.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the present invention is applicable even if there is a design change within the scope of the present invention. include.

For example, in the first embodiment, the first and second output shafts 20 and 23 are provided side by side in the vertical direction.
The present invention is not particularly limited to this. For example, the first and second output shafts 20 and 2
3 may be arranged in a diagonal direction or a horizontal direction, and may be configured in any manner as long as it has two output shafts.

In the first embodiment, the rotation speed of the front rotary cleaning member 5 is set to be lower than the rotation speed of the rear rotary cleaning member 5. However, the present invention is not limited to this. The shape of the rotary cleaning members 5, 5 and the floor surface, such as rotating at the same speed or setting the number of rotations of the front rotary cleaning member 5 to be higher than the number of rotations of the rear rotary cleaning member 5, It may be rotated at any ratio depending on the material of the contacting member.

In the first embodiment, the electric motor 6 has been described as the driving means. However, the present invention is not limited to this. For example, a fan that rotates by blowing air from the connecting pipe 1 into the cleaner body may be used. May be used.

[0061]

As described above, according to the first aspect of the present invention, the driving means is provided in the front-rear direction.
Since kicking are disposed between a pair of rotary cleaning body, the rotary cleaning body can each arranged in the longitudinal side edges near the suction port body.

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

The output shaft of the component gear unit and the rotary cleaning members are connected by a belt to transmit the rotation. Therefore, the two rotary cleaning members are separated from each other, and are separated between the rotary cleaning members. ,
It is possible to easily form a space facing the tip of the connection pipe.

For this reason, for example, if the tip of the connection pipe is positioned between the rotary cleaning members so as to be opposed to the scraping direction, a space for retaining dust and the like as in the related art will not be formed. In addition, the suction efficiency can be improved.

According to the second aspect of the present invention, since the two output shafts of the component force gear portion are provided side by side in the up-down direction, even if the interval between the two rotary cleaning members is reduced, the belt can be used. A predetermined length of the belt of the drive unit can be secured.

For this reason, the size of the suction opening 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.

In the third aspect,
Of the pair of rotary cleaning bodies, the front rotary cleaning body is pressed against the floor surface when the suction opening body advances, but the load does not increase so much because the traveling direction matches the rotation direction. In addition, when the traveling direction and the rotation direction coincide with each other, the traveling assistance is provided. Further, the rear rotating cleaning body is not pressed against the front rotary cleaning body when the suction opening body advances. For this reason, 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.

For this reason, practically, the rear rotating cleaning member can scrape up dust and the like on the floor surface that could not be completely lifted by the front rotating cleaning member, and can suck the dust. It has a beneficial effect.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view illustrating a suction port of a vacuum cleaner according to Embodiment 1 of the present invention and illustrating a configuration of a main part viewed from a side.

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

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

FIG. 4 is a cross-sectional view showing a conventional suction port body taken along a line BB in FIG. 3; It is a top view.

[Explanation of symbols]

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

Continuation of the front page (72) Inventor Shuhei Omoto 43 Horiyamashita, Hadano-shi, Kanagawa Tec Co., Ltd. Inside the Hadano Factory (56) References , U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47L 9/02-9/04

Claims (3)

(57) [Claims] 1. A pair of rotary cleaning bodies having different rotation directions are used as shafts.
Met suction port body is disposed back and forth so that the direction is parallel
A driving means is provided between the pair of rotary cleaning bodies in the front-rear direction , and a transmission means for transmitting a rotational force of the driving means to each of the rotary cleaning bodies is provided. By means of the rotation drive of the means , each fixed gear
A component gear unit having two output shafts rotating in opposite directions by meshing with each other, and a belt drive unit having two belts transmitting the rotation of each output shaft to each of the rotary cleaning members are provided. A suction port body characterized by being performed. 2. The suction port body according to claim 1, wherein the two output shafts of the component force gear portion are provided side by side in a vertical direction. 3. A pair of rotating cleaning bodies are disposed in front and behind the driving means so as to rotate in a direction in which the rotating cleaning bodies are scraped inward, and the rotational speed of the front rotating cleaning body is changed to the rear rotation speed. 3. The suction port body according to claim 1, wherein the number of rotations is set to be lower than the number of rotations of the cleaning body.