JPH0856876A - Suction port element of vacuum cleaner - Google Patents

Abstract

PURPOSE: To achieve the effective utilization of the sucked atmosphere in order to rotate a turbine and to enhance waste refuse sucking efficiency by forming a communication port positioned just under the turbine to a suction chamber and the partition wall demarcating a dust collecting air passage and a turbine chamber up and down. CONSTITUTION: The suction chamber 17 communicating with the suction port 16c formed to the bottom wall 16b of a main body 11 and the connection pipe 12 connecting the main body 11 and a vacuum cleaner main body are allowed to communicate with each other by a dust collecting air passage 18. The rotary cleaning member 20 facing to the suction port 16c is supported on the suction chamber 17 in a rotatable manner and a suction opening is opened to the suction chamber 17 and the turbine chamber 14' demarcated above the dust collecting air passage 18 by a diffuser 14a. The turbine 16 in the turbine chamber 14' is rotated by the sucked air stream of the atmosphere and the rotation thereof is transmitted to the rotary cleaning member 20 through a belt to perform cleaning by the cleaning member 20 and the waste refuse sucked from the suction port 16c is sucked toward the cleaner main body to be collected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body of an electric vacuum cleaner, and more particularly to a suction port body of a vacuum cleaner having a main body provided with a turbine which is rotated by a suction force from the main body of the vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 8A and 8B, a main body 1 having a suction port 1b formed in a bottom wall 1a facing a surface to be cleaned (not shown), and an electric vacuum cleaner. A dust collecting wind formed in the main body 1 so that the main body (not shown) and the main body 1 are connected to each other in a communicating state, and the suction chamber 1c and the pipe 2 which are in communication with the suction port 1b are in communication with each other. Path 1d and suction port 1c
And a turbine chamber 1e formed in the main body 1 and the rotary cleaning body 3 rotatably mounted inside the main body 1 so as to face
A suction opening 1f communicating with the turbine 4, a turbine 4 mounted in the turbine chamber 1e and rotated by the air flow a sucked from the suction opening 1f when the electric vacuum cleaner body is driven, the turbine 4 and the rotary cleaning body 3. There is known a suction port body 6 provided with a belt 5 rotatably mounted on (see, for example, U
(See SP2904816 publication).

Further, an air passage (arrows b, c, and so on) extending from the suction port 1b to the inside of the pipe body 2 through the suction chamber 1c and the dust collecting air passage 1d.
d, hereinafter referred to as "first air passage". ) Is the turbine chamber 1e
A second air passage (arrows e, f, hereinafter referred to as “second air passage”) from the inside to the inside of the pipe body 2 is separated by a partition wall 7. A valve body 7a for adjusting the opening area of the air passage peripheral end portion of the first air passage is rotatably (in the direction of arrow g) provided at the end portion of the partition wall 7. In addition, this valve body 7a
The opening of the tube is adjusted by a knob 2a provided on the tube body 2.

On the other hand, the bottom wall 1a has an adjusting opening 1 for adjusting the degree of vacuum in the dust collecting air passage 1d when, for example, the opening area of the suction opening 1b is narrowed due to a carpet with long hair.
g is formed. The adjustment opening 1g is normally closed by a lid 9 biased by a leaf spring 8.

In such a structure, when the main body of the electric vacuum cleaner is driven, the atmosphere is sucked into the turbine chamber 1e from the suction openings 1f, 1f, and the suction airflow causes the turbine 4 to rotate and the belt 5 to rotate at the same time. The rotary cleaning body 3 is moved and rotated, and the rotary cleaning body 3 scrapes up dust such as thread waste and dust on the surface to be cleaned.

[0006] Then, the scraped dust is conveyed to the main body of the electric vacuum cleaner through the first air passage. The atmosphere sucked into the turbine chamber 1e passes through the second air passage as it is, merges with the first air passage at the rear end of the pipe body 2, and the dust sucked from the suction port 1c is transferred to the main body of the vacuum cleaner. It is also used as an air passage for transportation.

[0007]

By the way, in the suction port body 6 of the electric vacuum cleaner configured as described above, the first air passage and the second air passage extend to the rear end of the pipe body 2. It is completely independent. Therefore, considering the action of the valve body 7a, the suction force of dust at the suction port 1b is not more than half of the total air volume at the maximum, so not only the dust suction efficiency is reduced to half, but also the suction opening is reduced. The suction airflow sucked from 1f was inefficient in that a half or more of the air volume was used only by rotating the turbine 4 inside the main body.

The present invention has been made in view of the above circumstances, and it is possible to effectively utilize the atmosphere sucked in to rotate a turbine, and thus to improve the suction efficiency of dust. It is intended to provide a suction port body of a machine.

[0009]

In order to achieve the object, the invention according to claim 1 has a main body having a suction port formed in a bottom wall facing a surface to be cleaned, and one end of which is connected to the main body. A suction chamber formed in the main body and communicating with the suction port; and a suction chamber formed in the main body, and the suction chamber and the tubular body. A dust collection air passage communicating with the suction chamber, a rotary cleaning member rotatably supported in the suction chamber and facing the suction port, and formed on the main body, and located above the suction chamber and the dust collection air passage. Then, a turbine chamber defined by these and a partition wall, a suction opening formed in the main body and communicating the atmosphere with the turbine chamber, and the suction opening mounted in the turbine chamber and driven by the electric vacuum cleaner. Turbine which is rotated by the air flow sucked from And a suction port body of an electric vacuum cleaner including the turbine and a belt installed on the rotary cleaning body, wherein a communication port is formed in the partition wall just below the turbine. Is.

[0010]

According to the structure described in claim 1, the suction port is formed in the bottom wall of the main body facing the surface to be cleaned, one end of the pipe is connected to the main body, and the other end of the pipe is A rotary cleaning body that is connected to the main body of the electric vacuum cleaner and that has a suction chamber that communicates with the suction port is formed in the main body, and that a dust collection air passage that communicates the suction chamber and the pipe body is formed in the main body and that faces the suction port. Is rotatably supported in the suction chamber, a turbine chamber formed above the suction chamber and the dust collection air passage and partitioned by a partition wall is formed in the main body,
A suction opening that connects the atmosphere and the turbine chamber is formed in the main body, a turbine that is rotated by the air flow sucked from the suction opening when the electric vacuum cleaner is driven is installed in the turbine chamber, and a belt is provided between the turbine and the rotary cleaning body. And the communication port is located directly below the turbine and is formed in the partition wall.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the suction port body of the vacuum cleaner of the present invention will be described with reference to the drawings.

In FIG. 1 and FIG. 2, the suction port body 10 is
A hollow main body 11 having a substantially T-shape in a plan view, and a longitudinal direction of the main body 11 (left and right direction in the suction port body 10, left and right direction in FIG. 1) and a vertical direction (in the direction of arrow a in FIG. 2) at the center rear And a connecting pipe 12 as a pipe body that is rotatably connected to the. Further, the main body 11 includes a case main body 13 and a turbine main body 14 mounted on the case main body 13.

One end of the connecting pipe 12 is connected to the main body 11, and the other end thereof is connected to the extension pipe E on the vacuum cleaner main body D side as shown in FIG. The extension pipe E is connected to the electric vacuum cleaner body D via a hose H, so that the electric vacuum cleaner body D and the suction port body 10 are communicated with each other.

The case body 13 is composed of a pair of upper and lower cases 1.
It is made hollow by the combined structure of 5, 16 and
A pair of left and right crank-shaped vertical walls 16a (only a part of one of which is shown) is provided upright on the lower case 16 so that the suction chamber 17 extends in the longitudinal direction, and the mouth direction (the front-back direction in the suction port body 10, FIG. In the left-right direction) and communicates with the suction chamber 17 and the connecting pipe 12, the dust collection air passage 18, the pair of left and right machine chambers 1
It is divided into 9a and 19b.

The upper case 15 is formed with a substantially cone-shaped turbine installation portion 15a which expands upward. Further, in the turbine installation portion 15a, openings 15b and 15c are formed in front of and behind the suction port body 10, that is, at a position facing the suction chamber 17 and a position facing the dust collection air passage 18. In addition, a part of the turbine installation portion 15 a serves as a connecting pipe holding portion in cooperation with the lower case 16.

A suction port 16c extending in the longitudinal direction is formed in the bottom wall 16b of the lower case 16 facing the surface to be cleaned (not shown). Therefore, the suction port 16c is the first air passage F1 that extends from the suction chamber 17 through the dust collection air passage 18 to the connecting pipe 12.
It is the beginning of the wind path. In addition, the suction port 16c,
The rotary cleaning body 20 rotatably held in the upper and lower cases 15 and 16 via the bearing portions 20a (only the machine chamber 19a side is shown) at the left and right ends located in the machine chambers 19a and 19b.
The central part of is facing. The axis of the rotary cleaning body 20 is parallel to the surface to be cleaned.

At the corners of the machine room 19a, as shown in FIGS. 3 and 4, the pulley shafts 21 are rotatably mounted on the bearing brackets 16d and 16d provided upright from the lower case 16 via the support shafts 21a. It is supported. The pulley shaft 21 rotatably holds a pair of upper and lower idler pulleys 22, 22 as direction changing means. In addition, a boss 16e standing upright from the lower case 16 is located near the pulley shaft 21. The boss 16e and the pulley shaft 21 have a coil spring 2 biased in a pulling direction along the rotation direction of the pulley shaft 21.
3 is installed.

On the other hand, the turbine body 14 includes the diffuser 1
A turbine chamber 14 'is formed by 4a and the cover 14b.

A turbine fixed shaft 24 orthogonal to the surface to be cleaned is rotatably held by a diffuser 14a via a ball bearing 25. Further, the diffuser 14a has a guide surface 14c that expands upward along the turbine installation portion 15a. The guide surface 14c is formed with communication ports 14d and 14e facing the openings 15b and 15c. Further, on the guide surface 14c, a plurality of fins 14f, 14f, ..., A belt guide passage 14g extending from the guide surface 14c to the left and right around a portion supporting the turbine fixed shaft 24, the atmosphere and the turbine chamber 14 '. Suction openings 14h, 14h for communicating with each other are formed. The suction openings 14h and 14h are also formed in the cover 14b. Further, one wall surface of the belt guide passage 14g is formed in an arc shape so as to play the same role as the fin 14f.

The communication port 14d faces the dust collecting air passage 18 so that the turbine chamber 14 'and the dust collecting air passage 18 communicate directly with each other, and the suction opening 14h, the turbine chamber 14', and the dust collecting air passage are exposed from the atmosphere. A second air passage F2 that leads to the connecting pipe 12 via 18 is formed.

The communication port 14e faces the suction chamber 17 so that the turbine chamber 14 'and the suction chamber 17 communicate directly with each other, and the suction opening 14h from the atmosphere, the turbine chamber 14',
A third air passage F3 is formed through the suction chamber 17 and the dust collection air passage 18 to reach the connecting pipe 12. The opening area of the communication port 14e is set smaller than the opening area of the communication port 14d.

A turbine 2 having a large number of blades 26a, 26a ...
6 is fixed. A pair of upper and lower pulleys 27 and 28 are rotatably held at the lower end of the turbine fixed shaft 24.

The pulley 27 and the pulley 3 fixed to the input shaft (not shown) of the generator 29 provided in the machine room 19b.
A timing belt 31 is rotatably mounted on the timing belt 32, and a timing belt 32 is rotatably mounted on the pulley 28 and the gear portion 20b of the rotary cleaning body 20.
Incidentally, a part of each of the belts 31 and 32 is a belt guide passage 14g.
It is located inside.

The midway portion of the timing belt 32 is guided by the idler pulleys 22 and 22 so that the timing belt 32 avoids the suction port 16c. At this time, the idler pulleys 22 and 22 do not simply extend the timing belt 32 by bending the extending direction of the timing belt 32 into a substantially L-shaped direction.
As schematically shown in FIG. 5, the timing belt 32 rotates the pulley 28 that is coaxial with the turbine fixed shaft 24 that is orthogonal to the surface to be cleaned and the gear portion 20b that is an axis that is parallel to the surface to be cleaned.
It is set so that the direction of the working surface of the inner circumference is also changed in order to achieve both by the rotational movement of.

By the way, as a means for changing the direction of the timing belt 32, in addition to the above-mentioned structure, FIG.
As shown in FIG. 3, the pulley shaft 21 'is slanted (for example, 45 degrees) so as to have an axis in a plane substantially parallel to the installation surface.
Degree), and the pulley shaft 2 that is obliquely provided
1 may be provided with idler pulleys 22 'and 22' so that the extending direction and the acting direction of the timing belt 32 can be changed. At this time, as in the case of the pulley shaft 21, it is possible to maintain the tension by installing a coil spring (not shown) on the pulley shaft 21 '. Incidentally, in FIG. 7, the same components as those of the above-mentioned embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the above structure, the extension pipe E is connected to the connection pipe 12, and the vacuum cleaner body D and the suction port body 10 are connected to each other through the extension pipe E and the hose H. If the vacuum cleaner body is driven from this state, the suction openings 14h, 1
Atmosphere is sucked into the turbine chamber 14 'from 4h, and the suction airflow is blown to the blades 26a, 26a of the turbine 26 to rotate the turbine 26.

At this time, unlike the suction airflow from the suction port 16c for sucking dust, the suction airflow from the suction opening 14h is the turbine 2 which contains almost no dust or the like.
Since it is blown to the turbine 6, it is possible to prevent dust from being caught in the turbine 26 and impairing the rotation.

The rotation of the turbine 26 causes the turbine fixed shaft 24 and the pulleys 27 and 28 to integrally rotate, and the timing belts 31 and 32 start to rotate.

When the timing belt 31 rotates,
Power can be supplied from the generator 29 via the pulley 30, and an electric drive means such as an indicator lamp provided in the suction port body 11 is driven.

The rotational movement of the timing belt 32 is such that the idler pulley 2 is moved in the middle of the timing belt 32.
The gear portion 20b is rotated in a state in which the extending direction and the acting direction are changed by 2, 22. Further, the rotation of the gear portion 20b causes the rotary cleaning body 20 to rotate and scrape dust such as thread waste and dust on the surface to be cleaned.

At this time, in the timing belt 32, the idler pulleys 22, 22 are displaced to a position where the load of the timing belt 32 and the tension of the coil spring 23 are suspended by the coil spring 23, and the tension of the timing belt 32 is displaced by this displacement. Can be kept constant and the rotation speed and torque can be made constant.

The scraped up dust is the first
From the air passage F1, that is, the suction port 16c, the suction chamber 17, the dust collection passage 18, and the connecting pipe 12 are sequentially sucked into the main body of the electric vacuum cleaner.

On the other hand, the atmosphere sucked from the suction opening 14h is the second and third air passages F2, F3, that is, the fins 14
While being guided by the f, 14f, and the guide surface 14c, the gas passes through the communication port 14d or the communication port 14e, is directly guided to the suction chamber 17 or the dust collecting air passage 18, and is then sucked into the connecting pipe 12.

At this time, since the guide surface 14c is set so that the opening area becomes narrower in the leeward direction, that is, as it goes downward, the air is rectified in the process from the suction opening 14h to the communication ports 14d and 14e. Thus, it is possible to reduce the sound at the time of suction, reduce the size of the turbine body 14, and increase the output of the turbine 26.

Further, the airflow guided from the communication port 14d to the suction chamber 17 is used as a suction wind for guiding the dust sucked from the suction port 16c to the suction chamber 17 to the connecting pipe 12, and then from the communication port 14e. The airflow guided to the dust collecting air passage 18 is used as suction air for guiding the dust guided from the suction chamber 17 to the dust collecting air passage 18 to the connecting pipe 12, so that the turbine 26 is rotated. The airflow can be effectively used.

Further, since the communication ports 14d and 14e are close to the suction port 16c at the confluence of the first air passage F1 and the second air passage F2 or the first air passage F1 and the third air passage F3.
The air passage from the suction chamber 17 to the connecting pipe 12 is unlikely to be in a vacuum state, and not only the dust suction efficiency described above is good, but also dust can be prevented from staying in this air passage.

As described above, the merging point is set at the suction port 16c.
From the viewpoint of approaching the communication port 14d,
Even if only one of 14e is formed, its effect can be sufficiently exerted, but if it is provided at two front and rear positions, the effect can be maximized.

Therefore, for example, if the surface to be cleaned is a carpet with long fluff, the contact resistance between the rotary cleaning body 20 and the fluff of the carpet is increased, and the contact area between the bottom wall 16b and the fluff of the carpet is increased. As a result, the airtightness (vacuum degree) of the suction port 16c increases, but in this case, the suction airflow passing through the first air passage F1 decreases, the suction airflow for rotating the turbine 26 increases, and the suction airflow increases. The suction airflow passing through the second and third air passages F2 and F3 increases, the rotation speed of the turbine 26 increases, and the rotation speed of the rotary cleaning body 20 increases simultaneously. You can raise.

When the main body 11 is lifted from the surface to be cleaned during cleaning, for example, when crossing a sill, the suction port 16c is opened and the airtightness becomes low. The suction airflow passing through the second and third air passages F2 and F3 decreases, and the suction airflow passing through the first air passage F1 decreases. Therefore, the suction airflow for rotating the turbine 26 is reduced, the rotational speed of the turbine 26 can be suppressed, and the noise generated by the rotation of the turbine 26 is reduced. Even when the surface to be cleaned is a tatami mat, a space between boards, or a carpet with short naps, the rotary cleaning body 20 can rotate appropriately for the state of the surface to be cleaned.

Incidentally, the suction port body 10 of the electric vacuum cleaner of this embodiment.
In the above description, the rotary cleaning body 20 is always rotated. However, an opening / closing member for opening / closing the suction opening 14h is provided, and for example, in the case where the rotation cleaning body 20 does not need to rotate, such as when the surface to be cleaned is a tatami mat. In addition, the rotary cleaning body 20 can be prevented from rotating by closing the suction opening 14h. Further, the present invention may be used in a so-called upright type electric vacuum cleaner in which the connecting pipe 12 is provided integrally with the electric vacuum cleaner.

[0041]

As described above, in the suction port body of the electric vacuum cleaner of the present invention, the suction chamber and the partition wall which divides the dust collecting air passage and the turbine chamber into upper and lower portions communicate with each other. By forming the mouth, it is possible to effectively utilize the air sucked in to rotate the turbine, and thus it is possible to improve the suction efficiency of dust.

[Brief description of drawings]

FIG. 1 is a plan view of a suction port body of an electric vacuum cleaner of the present invention, showing a state in which a part of an upper cover is broken and a turbine cover is removed.

FIG. 2 is likewise a sectional view of a main part.

FIG. 3 is likewise an enlarged perspective view of the direction changing means.

FIG. 4 is also an enlarged side view of the direction changing means.

FIG. 5 is an explanatory view schematically showing the action of the direction changing means.

FIG. 6 is likewise a perspective view showing the external appearance of the electric vacuum cleaner.

FIG. 7 is a plan view of the suction port body of the vacuum cleaner according to the second embodiment of the present invention, showing a state in which a part of the upper cover is broken and the turbine cover is removed.

FIG. 8 shows a suction port body of a conventional electric vacuum cleaner, (A) is a cross-sectional view of a main part, and (B) is a bottom view of the suction port body.

[Explanation of symbols]

 D ... Vacuum cleaner main body 10 ... Suction port body 11 ... Main body 12 ... Connection pipe (pipe body) 14 ... Turbine body 14a ... Diffuser (partition wall) 14d ... Communication port 14e ... Communication port 14h ... Suction opening 14 '... Turbine chamber 16 ... Lower case 16b ... Bottom wall 16c ... Suction port 17 ... Suction chamber 18 ... Dust collection air passage 20 ... Rotating cleaning body 26 ... Turbine 32 ... Timing belt

Claims (6)

[Claims] 1. A main body having a suction port formed in a bottom wall facing the surface to be cleaned, and a tube body having one end connected to the main body and the other end connected to the main body of the electric vacuum cleaner. A suction chamber formed in the main body and communicating with the suction port, a dust collection air passage formed in the main body and communicating the suction chamber and the pipe body, and rotatably supported by the suction chamber. A rotary cleaning member that faces the suction port, a turbine chamber that is formed in the main body and that is located above the suction chamber and the dust collection air passage and is partitioned by a partition wall between the suction cleaning chamber and the dust collection air passage, and an atmosphere formed in the main body and the atmosphere. A suction opening communicating with the turbine chamber, a turbine mounted in the turbine chamber and rotated by the air flow sucked from the suction opening when the electric vacuum cleaner is driven, and the turbine and the rotary cleaning body. An electric belt with an erected belt In the suction port body of the vacuum cleaner, the suction port of the vacuum cleaner, characterized in that the formation of the communication port in the partition wall located beneath the turbine. 2. The suction port body of the electric vacuum cleaner according to claim 1, wherein the communication port directly communicates with the suction chamber. 3. The suction port body of the electric vacuum cleaner according to claim 1, wherein the communication port directly communicates with the dust collecting air passage. 4. The suction port body for an electric vacuum cleaner according to claim 1, wherein a plurality of communication ports are provided so as to directly communicate with each of the suction chamber and the dust collecting air passage. 5. The plurality of communication ports are set so that the opening area of the communication port communicating with the dust collecting air passage side is larger than the opening area of the communication port communicating with the suction chamber side. The suction opening body of the vacuum cleaner according to claim 4. 6. A suction port body of an electric vacuum cleaner according to claim 1, wherein a diffuser having an opening area set to be narrower in a leeward direction is formed in an air passage extending from the suction opening to the communication port. .