JP3501958B2 - Suction port body and vacuum cleaner - 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 in which a rotary cleaning member rotatably provided in a suction chamber of a suction port body is rotated by outside air introduced from an outside air introduction port. Regarding

[0002]

2. Description of the Related Art Conventionally, a suction port main body having a connecting pipe vertically rotatably supported at a central portion in a longitudinal direction, a suction chamber having a suction opening formed on a bottom surface of the suction port main body, and a suction chamber Suction including a rotatably provided rotary cleaning body and a nozzle body for rotating the rotary cleaning body by blowing external air introduced from an external air introduction port formed on the suction port body onto a blade of the rotary cleaning body The mouth is known.

In the suction port body, the rotation direction of the rotary cleaning body is switched by switching the direction of the nozzle body in conjunction with the advance / retreat of the suction port body to change the blowing direction of the outside air to the blade.

The switching of the nozzle body is performed by providing the nozzle body with a contact portion which protrudes from the bottom portion of the suction body and extends in the left-right direction to come into contact with the surface to be cleaned.

[0005]

By the way, in such a suction port body, it is considered that the contact portion is provided with a wiping member made of a raised cloth so that the floor surface can be wiped off.

However, depending on the direction of the raised hair, there is a possibility that the suction inlet cannot be smoothly moved forward and backward. For example, when the direction of the nap is directed forward, when the suction port body is moved forward, a downward pressing force is applied via the connecting pipe, so that the suction port body is deformed and the nap in the central portion is caught on the surface to be cleaned. In particular, in the case of a carpet or the like, the raised hair is caught by the hair of the carpet and the forward movement becomes heavy.

Further, when the direction of the nap is directed rearward, when the suction port body is retracted, the nap is caught on the surface to be cleaned, and when the contact portion is on the rear side of the suction port body, the connection pipe and the suction port body are separated. The front side of the suction port body floats around the rotation fulcrum. Therefore, there is a possibility that the suction efficiency of dust may be reduced.

The present invention has been made in view of the above circumstances, and an object thereof is to allow a suction port main body to move smoothly and to improve the suction efficiency of dust, and a suction port body. An object of the present invention is to provide an electric vacuum cleaner having a suction port body.

[0009]

In order to solve the above-mentioned problems, the invention of claim 1 is directed to a suction port main body having a connecting pipe rotatably supported at a central portion in the longitudinal direction, and a suction port main body of the suction port main body. A suction chamber having a suction opening formed on the bottom surface, a rotary cleaning body rotatably provided in the suction chamber, and the rotary cleaning receiving external air introduced from an external air introduction port formed in the suction port body. The air flow switching means is provided with a drive means for rotating the body, and an air flow switching means for switching the direction of the flow of the outside air received by the drive means in accordance with the forward / backward movement of the suction port body to switch the rotation direction of the rotary cleaning body. In the suction port body, which extends in the left-right direction and has a contact portion that contacts the surface to be cleaned and detects the advance / retreat of the suction port body, a wiping member having raised hair is provided on the lower end surface of the contact portion. Provided along the left-right direction Towards the direction of raising of the wipe member in the vicinity of the center portion of the suction inlet main body backward, except near the central portion is characterized by having its direction of raising of the wipe member forward.

According to a second aspect of the present invention, a suction port main body having a connecting pipe rotatably supported at a central portion in a longitudinal direction is provided, a suction chamber having a suction opening formed on a bottom surface of the suction port main body, and the suction chamber. Rotating cleaning body rotatably provided in the chamber and outside air introduced from the outside air inlet formed in the suction port body are blown to the blade of the rotating cleaning body to rotate the rotating cleaning body and the direction can be switched. Nozzle body, and a traveling direction detection member that detects the forward / backward movement of the suction port main body and switches the direction of the nozzle body to switch the rotation direction of the rotary cleaning body. In a suction port body having a contact portion that extends to the surface and contacts the surface to be cleaned, a wiping member having a raised portion is provided on the lower end surface of the contact portion along the left-right direction, and the vicinity of the central portion of the suction port body. Oke Towards the direction of raising of the wipe member rearward, except near the central portion is characterized by having its direction of raising of the wipe member forward.

According to the third aspect of the present invention, the contact portion is divided into three parts in the left-right direction and separated, and the direction of raising the wiping member provided at the contact portion at the central portion is directed rearward so that the contact portions on both sides are separated. It is characterized in that the direction of raising the provided wiping member is directed forward.

[0012] The invention of claim 4 is characterized by comprising the suction port body of claims 1 to 3.

[0013]

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

In FIG. 1, reference numeral 10 denotes an electric vacuum cleaner body,
Inside the main body 10, a dust collection chamber 12 and an electric blower 13 for making the dust collection chamber 12 a negative pressure are provided. Dust collection chamber 12
A dust collection filter 14 is provided in the. Reference numeral 15 denotes a hose, one end of which is detachably connected to the electric vacuum cleaner body 10, and a hand operation pipe 16 is provided at the other end of the hose 15. The hand operation tube 16 has a handle portion 16A and an operation portion 1
6B is provided, and the operation unit 16B is provided with various switches for setting the power of the electric blower 13 and turning off the power.

An extension pipe 17 is detachably connected to the hand operation pipe 16, and a suction port body 20 is detachably connected to a distal end portion of the extension pipe 17.

As shown in FIGS. 2 and 3, the suction port body 20 includes a suction port body 30 and a connection pipe 21 which is connected to the extension pipe 17 and is provided at the rear of the body 30 and extends obliquely upward. Is equipped with. The connecting pipe 21 is vertically rotatable.

In the rear portion 31A of the upper wall 31 of the suction port body 30, a plurality of outside air introduction ports 41 are provided at positions on both sides of the connecting pipe 21.
Are formed. Further, as shown in FIG. 3, the bottom wall 32 of the suction port body 30 has a suction opening 33 extending in the left-right direction.
And 3 along the suction opening 33 on the rear side of the suction opening 33.
Two openings 34A, 34B, 34C are formed.

A suction chamber 35 communicating with the suction opening 33 is formed in the suction port body 30, and the suction chamber 35 is communicated with the connecting pipe 21 via a suction air passage 36. The suction air passage 36 is formed by an air passage pipe 38 provided in the central portion of the suction inlet main body 30, and both sides of the air passage pipe 38 are connected to an outside air introduction port 41 as shown in FIG. 37 is formed.

A rotary cleaning body 70 is rotatably arranged in the suction chamber 35. The rotary cleaning body 70 is constructed by arranging a plurality of blades 72 and brushes 73 on a shaft portion 71. It is a thing.

As shown in FIG. 5, the outside air introducing chamber 37 includes a rear portion 31A of the upper wall 31 of the suction port body 30 and the upper wall 31.
Rear partition wall 39 protruding downward from the suction port body 30
And the bottom wall 32 of. The outside air introducing chamber 37 is provided with openings 34A and 34C. The suction chamber 35 is the upper wall 31 of the suction port body 30.
And a front partition wall 42 that projects obliquely downward from the upper wall 31 toward the rear, and a bottom wall 32.

The lower portion 39A of the rear partition wall 39 and the lower portion of the front partition wall 42 are connected and integrated, and between the lower portion 39A of the rear partition wall 39 and the bottom wall 32 of the suction port body 30. Has a gap of a predetermined height. The nozzle bodies 50, 50 are rotatably arranged in this gap and the gap is closed.

Each nozzle body 50 has a columnar rotating portion (traveling direction detecting member) 51 and the suction chamber 35 from the rotating portion 51.
And a nozzle portion 52 directed toward the lower portion (in FIG. 5) of the rotary cleaning body 70.
The rotating portion 51 and the rotating portion 51 are connected by a shaft 53 arranged below the air duct 38. A rotary body (traveling direction detection member) 56 having a fan-shaped cross section is integrally provided on the shaft 53, and a lower portion (contact portion) 56A of the rotary body 56 is provided.
Enter into the opening 34B of the bottom wall 32 and come into contact with the floor surface or the like.

A shaft portion 54 is formed at one end of the cylindrical portion 51 on the axis 53 line, and a shaft portion 54 is formed at the other end of the other cylindrical portion 51 in the same manner. The nozzle bodies 50, 50 are pivotally supported by the side wall portion of the mouth main body 30 and are rotatable about their axes.

In each nozzle body 50, the nozzle parts 52, 52 are provided from the rear side of the upper part (in FIG. 5) of the rotating parts 51, 51.
Slit-shaped holes 57, 57 are formed so as to penetrate to the tip of the outside air introduction chambers 37, 37 and the suction chamber 35 communicate with each other through the holes 57, 57.

The nozzle body 50 is for rotating the rotary cleaning body by blowing the outside air from the hole 57 of the nozzle portion 52 onto the blade 72 and the brush 73 of the rotary cleaning body 70 to rotate the rotary cleaning body as shown in FIG. Rotate 70 counterclockwise,
In the direction shown in FIG. 6, the rotary cleaning body 70 is rotated clockwise. That is, the nozzle body 50 has a function as an air flow switching means for switching the rotation direction of the rotary cleaning body 70. In addition, the blade 72 of the rotary cleaning body 70 and the brush 73
Functions as a drive unit that receives the outside air blown from the nozzle body 50 and rotates the rotary cleaning body 70.

As shown in FIG. 5, the nozzle portion 52 comes into contact with the bottom wall 32 and is restricted from rotating more than a predetermined amount.
2 is kept horizontal. In this state, the nozzle portion 52
The outside air blown from the air blows against the blade 72 and the brush 73 at the bottom of the rotary cleaning body 70. Further, as shown in FIG. 6, when the nozzle portion 52 is directed obliquely upward, the outside air blown from the nozzle portion 52 is blown against the blade 72 and the brush 73 on the upper portion of the rotary cleaning body 70. .

Lower portions (contact portions) 51A of the rotating portions 51, 51,
51A enters into the openings 34A and 34C of the bottom wall 32 and comes into contact with the floor surface or the like. A recess 51b is formed in each lower portion 51A, and a wiping member 60 having a raised hair 60A is provided in this recess 51b. The nap 60A of the wiping member 60 is adapted to come into contact with the floor surface, and the nap 60A is directed forward as shown in FIG.

Similarly, as shown in FIG. 8, a wiping member 61 having a raised hair 61A is provided on the lower portion 56A of the rotating body 56. The nap 61A of the wiping member 61 is adapted to come into contact with the floor surface or the like, and the nap 61A is directed rearward (to the left) as shown in FIG.

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

When the electric blower 13 is driven and the dust collection chamber 12 becomes negative pressure, the suction chamber 35 becomes negative pressure through the hose 15, the extension pipe 17, the connecting pipe 21 and the suction air passage 36, and the suction port main body 30. The dust is sucked together with the outside air from the suction opening 33 of the main body 1 through the suction chamber 35, the suction air passage 36, the connecting pipe 21, the extension pipe 17 and the like.
It is sucked into the dust collecting chamber 12 of 0.

When the suction port body 20 is moved forward (to the right in FIG. 5), the raised hairs 60A of each nozzle wiping member 60 and the raised hairs 61A of the wiping member 61 are in contact with the floor surface. The nozzle bodies 50 rotate clockwise as the suction port body 20 advances. By this rotation,
As shown in FIG. 5, the nozzle portion 52 comes into contact with the bottom wall 32 and becomes horizontal.

On the other hand, due to the negative pressure in the suction chamber 35, the outside air is sucked into the outside air introducing chamber 37 from the outside air introducing port 41, and further,
The outside air sucked into the outside air introducing chamber 37 is the hole 5 of the nozzle body 50.
It blows out into the suction chamber 35 through 7. That is, the outside air is blown from the hole 57 of the nozzle portion 52 toward the blade 72 and the brush 73 below the rotary cleaning body 70, and the rotary cleaning body 70 rotates counterclockwise.

By the counterclockwise rotation of the rotary cleaning body 70, the blade 72 and the brush 73 are brought into sliding contact with the floor surface in the direction opposite to the forward direction of the suction port body 20. For this reason,
The scraping effect of the blade 72 and the brush 73 is improved.

While advancing the suction port body 20,
A force is exerted on the suction port main body 30 obliquely downward via the extension pipe 17 and the like, and at the center of the suction opening 33 near the suction air passage 36, the suction force to the floor surface is large. Therefore, the central portion of the suction port body 30 bends downward, and the raised hairs 61A of the wiping member 61 provided on the rotating body 56 come into contact with the floor surface and the like. However, since the direction of the nap 61A is directed rearward, the nap 61A does not become a resistance when moving forward, and even if the floor surface is a carpet, it may be caught by the carpet. Absent.

On the other hand, the left and right ends of the suction port body 30 are
Since the suction force to the floor surface and the pushing force to the lower side are small, the amount of contact of the raised hairs 60A of the wiping members 60 on both sides to the floor surface is small. For this reason, even when the raised hair 60A is directed forward, resistance during forward movement and catching of the carpet and the like are reduced.

Therefore, the suction port body 20 can be smoothly advanced, and the traveling thereof is light.

When the suction port body 20 is retracted, the naps 60A of the wiping members 60 on the left and right ends of the suction port body 30 are directed forward, so that the naps 60A are retracted. It does not become a resistance at the time, and even if the floor surface is a carpet, it does not get caught on the carpet.

When the suction port body 20 is retracted, as shown in FIG.
As shown in FIG. 5, the extension pipe 17 is pulled toward the hand side, so that there is no downward bending of the central portion of the suction port body 30. Alternatively, since an upward force is applied via the connecting pipe 21, it bends slightly upward. For this reason, the amount of contact of the wiping member 61 to the floor surface of the nap 61A is small, and therefore the resistance when the nap 61A retracts is small. Further, even if the floor surface is a carpet, the raised hair 61A is less likely to catch the carpet.

Therefore, the suction port body 20 can be smoothly retracted, and the small amount of catching by the raised hairs 61A does not cause the front side of the suction port body 30 to float, thereby improving the suction efficiency. The decrease is prevented, and the dust suction efficiency is improved.

[0040]

As described above, according to the inventions of claims 1 to 3, it is possible to smoothly move the suction port main body forward and backward and to improve the dust suction efficiency. be able to.

According to the invention of claim 4, it is possible to provide an electric vacuum cleaner which can obtain the effects of claims 1 to 3.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an electric vacuum cleaner according to the present invention.

FIG. 2 is a plan view showing a suction port body shown in FIG.

FIG. 3 is a cross-sectional view showing the configuration of the suction port body of FIG.

FIG. 4 is a bottom view of the suction port body shown in FIG.

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

FIG. 6 is an explanatory diagram when the suction port body is retracted.

FIG. 7 is a partially enlarged view of a suction port body.

FIG. 8 is an enlarged view of a rotating body.

[Explanation of symbols]

20 Suction mouth 21 Connection pipe 30 Suction port body 33 Suction opening 35 Suction chamber 41 Outside air inlet 50 nozzle body 51 Rotating part 51A contact part 60 Wiping member 60A brushed

Front page continuation (72) Inventor Junji Naito 43, Horiyamashita, Hadano City, Kanagawa Prefecture Tech inside Hadano Plant, Tech (72) Inventor, Kiyoshi Ishikawa 43, Horiyamashita, Hadano City, Kanagawa Prefecture Tech Hadano Plant, Ltd. (56) Reference Documents JP-A-10-262877 (JP, A) JP-A-11-346969 (JP, A) JP-A-2-26521 (JP, A) International Publication 96/28081 (WO, A1) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 9/04

Claims (4)

(57) [Claims] 1. A suction port main body that supports a connecting pipe in a longitudinal central portion so as to be vertically rotatable, a suction chamber having a suction opening formed in a bottom surface of the suction port main body, and rotatably in the suction chamber. A rotary cleaning body provided, drive means for rotating the rotary cleaning body by receiving the outside air introduced from the outside air introduction port formed in the suction inlet body, and the direction of the flow of the outside air received by the driving means is sucked in. An air flow switching means for switching the rotation direction of the rotary cleaning body by switching depending on whether the mouth body moves forward or backward. The air flow switching means extends in the left-right direction and contacts the surface to be cleaned, and the suction port body moves forward. -In the suction port body having the contact portion for detecting the backward movement, a wiping member having a raised hair is provided along the left-right direction on the lower end surface of the contact portion, and the wiping member near the central portion of the suction port body. The direction of brushing Towards, except near the center portion, a suction port body, characterized in that towards the direction of the raising of the wipe member forward. 2. A suction port main body which supports a connection pipe in a longitudinal central portion so as to be vertically rotatable, a suction chamber having a suction opening formed in a bottom surface of the suction port main body, and rotatably in the suction chamber. A rotary cleaning body provided, a nozzle body capable of switching the direction while rotating the rotary cleaning body by blowing the outside air introduced from the outside air introduction port formed in the suction port body onto the blade of the rotary cleaning body, And a traveling direction detection member that detects the forward / backward movement of the suction port body and switches the direction of the nozzle body to switch the rotation direction of the rotary cleaning body,
This running direction detecting member has a contact portion that extends in the left-right direction and has a contact portion that comes into contact with the surface to be cleaned, and a wiping member having raised hair is provided on the lower end surface of the contact portion along the left-right direction. The suction port body is characterized in that the direction of raising of the wiping member in the vicinity of the central portion of the suction port body is directed rearward, and the direction of raising of the wiping member is directed forward except in the vicinity of the central portion. 3. A wiping member provided on both sides of the contact part, wherein the contact part is divided into three parts in the left-right direction and separated, and the nap of the wiping member provided at the center contact part is directed rearward. The suction port body according to claim 1 or 2, wherein the raising of the member is directed forward. 4. An electric vacuum cleaner comprising the suction port body according to any one of claims 1 to 3.