JP3369433B2 - Vacuum cleaner suction 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 body of an electric vacuum cleaner that rotates a rotary cleaning body by a rotational force of a turbine.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 10 to 12, a suction port body of an electric vacuum cleaner for rotating a rotary cleaning body by a rotational force of a turbine has been known.

In FIGS. 10 to 12, reference numeral 1 is a suction port main body, and a turbine chamber 2 is provided in the suction port main body 1.
A turbine 3 rotatably provided in the turbine chamber 2.
And the rotary cleaning body 4, which is rotated by the rotation of the turbine 3,
5 and a converter 6 for converting the rotational direction of the turbine 3 and decelerating the rotational speed and transmitting it to the rotary cleaning bodies 4, 5.

In addition, rotary cleaning body chambers 7 and 8 are defined in the suction port body 1. The rotary cleaning body chambers 7 and 8 face the suction openings 9 and 10 and the rotary cleaning body chambers 4 and 5 are formed. It is rotatably provided, and gears 4A, 5A are attached to the shafts (not shown) of the rotary cleaning bodies 4, 5. The gears 4A and 5A are connected to the output shafts 6A and 6A of the conversion device 6 via timing belts T1 and T2, and the rotation cleaning members via the timing belts T1 and T2 and the gears 4A and 5A by the rotation of the output shafts 6A and 6A. 4 and 5 are designed to rotate.

The input shaft 6B of the converter 6 and the rotary shaft 3A of the turbine 3 are connected via a timing belt T3,
When the turbine 3 rotates, the input shaft 6B of the conversion device 6 rotates via the timing belt T3, and the rotation of the input shaft 6B causes the output shafts 6A and 6A to rotate, and the rotation cleaning member via the timing belts T1 and T2. 4 and 5 rotate.

Outside air is introduced into the suction chamber body 1 through the turbine chamber 2
A guide air passage 13 that guides the air to the suction cleaner, an intake air passage 16 that sucks the dust scraped up by the rotary cleaning body, and an exhaust air passage 17 that guides the outside air that has passed through the turbine chamber 2 to the suction air passage 16. Are formed. The exhaust air passage 17 and the turbine chamber 2 are communicated with each other through a communication hole Ka provided in the partition wall K. The suction air passage 16 communicates with the rotary cleaning body chambers 7 and 8 and is an extension pipe (not shown) connected to the connection pipe S.
The suction air passage 16 is made to have a negative pressure by being communicated with the main body of the cleaner (not shown) via the like.

Due to this negative pressure, the outside air is taken into the turbine chamber 2 through the small hole 19a provided in the upper case 19 and the guide air passage 13, and this outside air is introduced into the suction air passage 16 through the exhaust air passage 17. The turbine 3 rotates as it flows.

A storage chamber 14 extending downward is formed in the bottom wall 13A of the guide air passage 13, and the storage chamber 14 and the exhaust air passage 17 are communicated with each other by a communication passage 18. A metallic closing member 1 having a spherical lower portion
5 is stored.

FIG. 13 is a conceptual diagram showing the relationship among the guide air passage 13, the exhaust air passage 17, the suction air passage 16, and the communication passage 18.

The closing member 15 closes the communication passage 18 when the suction inlet main body 1 is not turned upside down, and closes the guide air passage 13 when the suction inlet main body 1 is turned upside down. Is to stop the rotation of.

When the closing member 15 closes the guide air passage 13, the storage chamber 14 and the exhaust air passage 17 communicate with each other, and the dust that has entered the bottom of the storage chamber 14 is sucked. This prevents dust from accumulating in the storage chamber 14 and ensures the operation of the closing member 15.

[0012]

By the way, in such a suction port body, the closing member 15 is easily lifted from the storage chamber 14 in a normal use state, that is, when the suction port body 1 is not turned upside down. There is a problem that the guide air passage 13 is blocked and the turbine 3 cannot be sufficiently rotated. This is because the communication passage 18 communicates with the guide air passage 13 that always communicates with the atmosphere as shown in FIG. 13, so that the degree of vacuum does not become so high that the suction force of the closing member 15 is weak. Is also caused.

The present invention has been made in view of the above problems, and an object thereof is to suck an electric vacuum cleaner in which the closing member does not float up from the storage chamber during cleaning and block the guide air passage. To provide the mouth.

[0014]

According to the invention of claim 1, a rotary cleaning body rotatably provided in a rotary cleaning body chamber having a suction opening formed in the bottom surface of the suction port body, and a guide to the outside air. A turbine chamber that is communicated through an air passage and that is provided in the suction port body, and a turbine that is rotatably provided in the turbine chamber and that is rotated by the outside air from the guide air passage to rotate the rotary cleaning body, A storage chamber provided in the suction port main body so that the upper portion is opened and the opening faces the guide air passage, and the storage chamber that is housed in the storage chamber and projects from the opening when the suction port main body is turned inside out. An electric vacuum cleaner including a closing member for closing the guide air passage, a connecting pipe provided in the suction port body, and a suction air passage formed in the suction port body and communicating the suction opening with the connecting pipe. Of the suction port of Forming a pay chamber suction air path, provided with a hole in the bottom of the housing chamber, characterized in that allowed communication between the storage chamber and the suction air passage.

The invention of claim 2 is characterized in that the hole is made of a porous member.

The invention of claim 3 is characterized in that the bottom wall of the storage chamber is made flat and the bottom surface of the closing member is made flat.

According to a fourth aspect of the present invention, the rotary cleaning body rotatably provided in the rotary cleaning body chamber having the suction opening formed on the bottom surface of the suction inlet body communicates with the outside air through the guide air passage, and A turbine chamber provided in the suction port main body, a turbine rotatably provided in the turbine chamber to rotate the rotary cleaning body by being rotated by the outside air from the guide air passage, and an upper portion is opened, and the opening is A storage chamber provided in the suction port body so as to face the guide air passage, and a closing member which is housed in the storage chamber and projects from the opening when the suction port body is turned upside down to close the guide air passage. Wherein the closing member is a suction port body of an electric vacuum cleaner having a columnar portion and a taper portion formed on the columnar portion,
The storage chamber is formed by an annular wall that prevents outside air drawn into the guide air passage from hitting the side surface of the closing member, and the height of the annular wall is equal to or greater than the columnar portion of the closing member. It is characterized in that it is set below the uppermost portion of the tapered portion.

According to the invention of claim 5, the height of the annular wall is set so that the amount of protrusion of the closing member when the suction port body is turned inside out is smaller than the height of the closing member. Is characterized by.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a suction port body of an electric vacuum cleaner according to the present invention will be described below with reference to the drawings.

1 to 5, reference numeral 20 denotes a suction port body of an electric vacuum cleaner, and this suction port body 20 is the suction port body 2
1, and the turbine chamber 30 is provided in the suction port body 21.
And the turbine 5 rotatably arranged in the turbine chamber 30.
0, a rotary cleaning body (agitator) 60 that rotates by the rotation of the turbine 50, a conversion device 70 that converts the rotational direction of the turbine 50 and reduces the rotational speed and transmits the rotational speed to the rotary cleaning body 60. Is provided. In addition, the suction port body 21 includes an upper case 211 and a lower case 21.
2 and.

A horizontally long rotary cleaning body chamber 23 is defined by a partition wall 24 in the suction port body 21, and the rotary cleaning body chamber 23 has a suction opening 26 provided on the bottom surface 21A of the suction port body 21. . The suction opening 2 is provided in the rotary cleaning body chamber 23.
A rotary cleaning body 60 is rotatably provided so as to face 6, and a gear 62 is attached to a shaft (not shown) of the rotary cleaning body 60.

The gear 62 is connected to the output gear 71 of the conversion device 70 via a timing belt 73, and the output gear 71
The rotation of the rotation cleaning body 60 rotates via the timing belt 73 and the gear 62.

As shown in FIG. 6, the conversion device 70 includes a device main body 75 having bevel gears 70A, 70B and the like built therein, and an input shaft 76 projecting downward from a lower portion of the device main body 75. The conversion device 70 converts the rotation of the input shaft 76 about the vertical axis into the rotation about the horizontal axis, reduces the speed, and outputs the rotation to the output shaft 71.

A gear 78 is attached to the input shaft 76, and the gear 78 and the gear 58 attached to the rotary shaft 51 of the turbine 50 are connected via a timing belt 74.

Further, the upper case 2 is provided in the suction port body 21.
11, a guide air passage 41 for guiding the outside air introduced from a large number of small holes 213 provided in 11 to the turbine chamber 30, and the turbine chamber 3
0 and the exhaust air passage 4 for communicating the outside air that has passed through the turbine chamber 30 with the suction air passage 40.
2 and 2 are sectioned. The suction air passage 40 communicates with the rotary pipe 27 attached to the rear portion of the suction port body 21, and the rotary cleaning body chamber 23 passes through the suction air passage 40 and the rotary pipe 2
It communicates with 7. Then, the rotary cleaning body chamber 23 and the suction air passage 40 form a suction air passage.

The rotary pipe 27 is rotatable in the direction of arrow P1 with respect to the suction port body 11, and a connecting pipe 28 is attached to the rotary pipe 27. The connection pipe 28 is connected to an extension pipe (not shown) or the like, and a vacuum cleaner body is connected through a hose.
The suction air passage 40 becomes negative pressure by communicating with a dust collection chamber (not shown).

The turbine chamber 30 includes the lower case 212 described above.
The partition wall 110 having a disk shape attached to the upper case 211 is partitioned and formed, and the exhaust air passage 42 is formed on the lower surface of the partition wall 110.
Is provided with a tubular partition wall 111 which is formed by partitioning
The opening end 111A of the partition wall 111 faces the opening 27A of the rotary tube 27. Turbine chamber 30 on partition wall 110
A communication hole 112 that communicates with the exhaust air passage 42 is provided.

The guide air passage 41 has an annular air passage portion 41A provided along the periphery of the turbine chamber 30 and an upper case 211.
Introduction air passage portion 41B formed below the small hole 213 of
It consists of and. The annular air passage portion 41A is the partition wall 1
10, a bottom wall portion 120 continuously formed along the periphery of the bottom wall portion 120, and a side wall portion 121 continuously formed at the outer periphery of the bottom wall portion 120.
And an annular wall 222 and the like formed on the upper case 211 and joined to the upper end of the side wall 121.

The introduction air passage portion 41B has a bottom wall portion 123 formed at a position lower than the bottom wall portion 120 by one step and the side wall portion 1B.
21 and a bottom wall portion 123 that is continuously formed, and a side wall portion 223 formed on the upper case 211 and joined to the side wall portion 124. The side wall portion 124 and the hanging wall portion 223 are provided in the rotary cleaning body chamber 23.
Forming a part of the partition wall 24. Further, the introduction air passage portion 41B and the suction air passage 40 are formed by the bottom wall portion 123 and the partition wall 215 and the like formed in the lower case 212.
And are divided.

The annular air passage portion 41A and the introduction air passage portion 4
The vicinity of the boundary with 1B is an intake port 140 for taking in outside air into the turbine chamber 30, and this intake port 140 is formed by a bottom wall portion 120, a peripheral wall portion 121, an annular wall portion 222, and the like.

An arcuate side wall (annular wall) 150 is formed on the bottom wall portion 123, and the side wall 150 defines a storage chamber 151 having an open top. Storage room 1
The bottom portion 151A of 51 has a flat shape.
A plurality of slit holes 152 are formed in 51A so as to face the suction opening 26, and the storage chamber 151 and the suction air passage 40 communicate with each other through the slit holes 152. FIG. 7 conceptually shows the relationship of the communication states of the air passages 40 to 42.

The storage chamber 151 has a cylindrical closing member 160.
Is stored, and when the suction port body 20 is turned inside out,
The closing member 160 projects from the opening 151B of the storage chamber 151 to close the intake port 140. Also,
The protrusion amount L (see FIG. 9) of the closing member 160 at this time is
The height of the side wall 150 is set so as to be smaller than the height H of the closing member 160.

Tapers 161, 16 are formed on the upper and lower portions of the closing member 160 so that the diameter becomes smaller as it goes up and down.
2 is formed, the height H of the closing member 160 is equal to that of the peripheral wall 150.
It is set so that the taper 161 portion protrudes from. Further, the upper and lower surfaces 163 and 164 of the closing member 160 are flat surfaces, and when the suction port body 20 is not turned inside out, the lower surface 163 of the closing member 160 has the slit hole 15.
2 is blocked.

Next, the operation of the suction port body will be described.

First, the electric vacuum cleaner body (not shown) is operated to move the suction port body 10 on the surface H to be cleaned to clean the surface M to be cleaned. At this time, the suction surface 26 of the bottom surface 21A of the suction port body 21 is closed by the surface M to be cleaned.

The dust collection chamber becomes negative pressure by the operation of the main body of the vacuum cleaner, and the suction air duct 40 is passed through the hose, extension pipe, connecting pipe, etc.
Becomes negative pressure. Due to this negative pressure, air is sucked in through the suction opening 26 of the rotary cleaning body chamber 23, and the air is indicated by an arrow (see FIG. 5).
It flows in the direction. As a result, dust or the like on the surface M to be cleaned is sucked into the rotary tube 27.

Further, since the suction air passage 40 communicates with the turbine chamber 30, the outside air is a small hole 213 of the upper case 211B.
Is introduced into the introduction air passage portion 41B of the guide air passage 41, and is further taken into the turbine chamber 30 via the intake port 140 and the annular air passage portion 41A. And the turbine room 30
The outside air sucked in is further sucked into the suction air passage 40 through the exhaust air passage 42, whereby the turbine 50 rotates at a high speed.

As the turbine 50 rotates, the gear 58
Also, the input shaft 76 of the conversion device 70 rotates via the timing belt 74, which causes the output gear 71 of the conversion device 70 to rotate. The rotation of the output gear 71 causes the rotary cleaning body 60 to rotate via the timing belt 73 and the gear 62 to scrape up dust adhering to the carpet or the like. The rotary cleaning body 60 rotates clockwise (in FIG. 4).

In this state, the closing member 160 has the structure shown in FIG.
As shown in FIG. 8 to FIG. 8, the lower surface 163 of the closing member 160 is stored in the storage chamber 151 and closes the slit hole 152. Since the slit hole 152 directly communicates with the suction air passage 40, the closing member 160 is sucked downward by the negative pressure of the suction air passage 40. That is, the surface to be cleaned M
Since the suction opening 26 is closed by the suction air passage 40, the degree of vacuum of the suction air passage 40 is increased.
The closing member 160, which is arranged so as to face, is sucked.
Therefore, even if the closing member 160 has a small weight, the closing member 160 floats up by the outside air F sucked into the turbine chamber 30 and the closing chamber 160 is closed.
The protrusion from 51 is prevented.

The closing member 160 has a taper 1 at the upper portion.
Since it is set to 61, a downward force is received by the outside air F, so that it is difficult to lift up. Therefore, the weight of the closing member 160 can be further reduced. Further, since the closing member 160 is in the state of being covered by the side wall 150, the outside air F does not directly contact the side surface of the closing member 160, so that the closing member 160 may be inclined or wobbled by the outside air F. Is prevented.

By the way, since the bottom portion 151A of the storage chamber 151 is flat and the lower surface 164 of the closing member 160 is a flat surface, the slit hole 152 is formed in the closing member 16.
0 is reliably blocked, and the outside air introduced into the introduction air passage portion 41B is reliably prevented from flowing into the suction air passage 40 through the slit hole 152.

Further, because of the slit holes 152, large dust sucked into the suction air passage 40 is prevented from entering the storage chamber 151. Further, since the bottom portion 151A is flat, that is, the bottom portion 151A does not project into the suction air passage 40 in a convex shape, the dust sucked into the suction air passage 40 enters the slit hole 152. It is difficult to enter.

When the suction port body 20 is turned upside down, the suction opening 26 is opened, so that the vacuum degree of the suction air passage 40 is lowered and the vacuum degree of the turbine chamber 30 becomes higher than that of the suction air passage 40. Therefore, as shown in FIG. 9, the closing member 160 also adds its own weight and projects from the opening 152 of the storage chamber 151 to close the intake port 140. That is, the guide air passage 41 is closed. Due to this blockage, the outside air is not being sucked into the turbine chamber 30, so that the rotation speed of the turbine 50 rapidly decreases, and the turbine 50 stops.
By stopping the turbine 50, it becomes easier to remove the thread scraps and the like that are entangled in the rotary cleaning body 60.

On the other hand, since the storage chamber 151 and the suction air passage 40 are communicated with each other by the slit hole 152, it is possible to prevent the outside air from flowing in the direction shown by the arrow F1 and the accumulation of dust in the storage chamber 150. .

By the way, when the suction port body 20 is turned upside down,
Although the closing member 160 directly contacts the upper case 211, by reducing the weight of the closing member 160, generation of abnormal noise can be prevented. Therefore, it is not necessary to provide a cushioning member such as rubber on the upper surface of the closing member 160 in order to prevent generation of abnormal noise. Also, the protrusion amount L of the closing member 160 is smaller than the height H of the closing member 160, so that the side wall 150 is formed.
Since the height of the suction port body 20 has been set,
The closing member 160 is prevented from slipping out of the storage chamber 151.

Further, since the closing member 160 is cylindrical,
There is no direction when assembling, and it becomes easy to assemble.

In the above embodiment, the bottom portion 1 of the storage chamber 151
51A is provided with a plurality of slit holes 152, and the bottom portion 1
Although 51A is made of a porous member, a large number of small holes may be provided, or a large hole may be provided.
It goes without saying that a filter (porous member) may be attached to this hole.

[0048]

As described above, according to the invention of claim 1, since a hole is provided at the bottom of the storage chamber to communicate the storage chamber with the suction air passage, the weight of the closing member is reduced. However, the blocking member does not float up from the storage chamber during cleaning and block the guide air passage, so that a sufficient amount of air flow acts on the turbine during cleaning, and the rotational force of the rotary cleaning body is also sufficiently obtained. To be

According to the second aspect of the invention, since the hole provided at the bottom of the storage chamber is made of a porous member, it is possible to prevent large dust sucked into the suction air passage from entering the storage chamber. .

According to the third aspect of the invention, since the bottom wall of the storage chamber is flat, the dust sucked into the suction air passage enters the storage chamber through the hole provided in the bottom wall. It becomes difficult.

According to the fourth aspect of the invention, since the storage chamber is formed by the annular wall which prevents the outside air sucked into the guide air passage from hitting the side surface of the closing member, the outside air is prevented by the outside air even if the closing member is made lightweight. It is possible to prevent the closing member from tilting or wobbling, and to prevent the closing member from rising. Further, since the height of the annular wall is set to be not less than the columnar portion of the closing member and not more than the uppermost portion of the tapered portion, the closing member receives a downward force by the outside air, and thus the weight of the closing member is further reduced. be able to.

According to the invention of claim 5, the height of the annular wall is set so that the amount of protrusion of the closing member when the suction port body is turned inside out is smaller than the height of the closing member.
It is possible to prevent the closing member from coming out of the storage chamber when the suction inlet body is turned inside out.

[Brief description of drawings]

FIG. 1 is a plan view of a suction port body of an electric vacuum cleaner according to the present invention.

FIG. 2 is a plan view in which a part of the suction port body shown in FIG. 1 is cut away.

3 is a bottom view of the suction port body of FIG. 1. FIG.

FIG. 4 is a cross-sectional view of the suction port body of FIG.

5 is a cross-sectional view of the suction port body of FIG.

6 is a vertical cross-sectional view of the suction port body of FIG.

FIG. 7 is a conceptual diagram showing a relationship of communication states of each air passage.

FIG. 8 is an explanatory view showing a closing member housed in a housing chamber.

FIG. 9 is an explanatory view showing a closing member protruding from the storage chamber.

FIG. 10 is a plan view showing a conventional suction port body.

11 is a vertical cross-sectional view of the suction port body of FIG.

12 is a cross-sectional view of the suction port body of FIG.

FIG. 13 is a conceptual diagram showing a relationship between communication states of conventional air passages.

[Explanation of symbols]

23 Rotating cleaning body room 26 Suction opening 27 rotating tube 30 turbine room 60 rotating cleaning body 151 storage room 151A bottom wall 152 slit hole 160 Closure member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-179471 (JP, A) JP-A-9-154782 (JP, A) JP-A-8-56876 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A47L 9/04

Claims (5)

(57) [Claims] 1. A rotary cleaning body rotatably provided in a rotary cleaning body chamber having a suction opening formed on the bottom surface of the suction inlet main body, which is in communication with the outside air through a guide air passage and to the suction inlet main body. A turbine chamber provided, a turbine rotatably provided in the turbine chamber to rotate the rotary cleaning body by being rotated by outside air from the guide air passage, and an upper portion is opened and the opening faces the guide air passage. A storage chamber provided in the suction port main body, a closing member which is housed in the storage chamber and projects from the opening to close the guide air passage when the suction main unit is turned over; and the suction port A suction port body of an electric vacuum cleaner, comprising: a connection pipe provided in a main body; and a suction air passage formed in the suction port main body for communicating the suction opening with the connection pipe, the suction port body suctioning the storage chamber. Formed on the air passage, this storage room Suction port body of a hole on the bottom vacuum cleaner, characterized in that allowed communication between the storage chamber and the suction air passage. 2. The suction port body for an electric vacuum cleaner according to claim 1, wherein the hole is made of a porous member. 3. The suction port body for an electric vacuum cleaner according to claim 1, wherein a bottom wall of the storage chamber is flat and a bottom surface of the closing member is flat. 4. A rotary cleaning body, which is rotatably provided in a rotary cleaning body chamber having a suction opening formed on the bottom surface of the suction inlet main body, communicates with the outside air through a guide air passage and is connected to the suction inlet main body. A turbine chamber provided, a turbine rotatably provided in the turbine chamber to rotate the rotary cleaning body by being rotated by outside air from the guide air passage, and an upper portion is opened and the opening faces the guide air passage. As described above, including a storage chamber provided in the suction port main body, and a closing member which is stored in the storage chamber and projects from the opening to close the guide air passage when the suction port main body is turned over, The closing member is a suction port body of an electric vacuum cleaner having a columnar portion and a taper portion formed on the columnar portion, and external air sucked into the guide air passage through the storage chamber is the closing member. Prevent hitting the sides Formed by like wall, the height of the annular wall, the suction inlet of the vacuum cleaner, characterized in that it be more than the columnar portion of the closing member is set lower than the top of the tapered portion. 5. The height of the annular wall is set such that the amount of protrusion of the closing member when the suction port body is turned inside out is smaller than the height of the closing member. Vacuum cleaner suction inlet body.