JPH08173357A - Suction opening body for vacuum cleaner - Google Patents

Abstract

PURPOSE: To provide a suction opening body for a vacuum cleaner, which excellently scratches and sucks even dusts at the corner of the wall by moving at least the lower edge of a cleaning member in the front/rear direction with a driving means, where the cleaning member is formed at the front end of a case body and that closes/opens an opening band on the front face which is communicated with the suction opening of the case body. CONSTITUTION: A case body 15 is partitioned to form an oblong suction chamber 18. A suction opening 22 is formed on the under surface of the suction chamber 18 and a front face opening 23 which is communicated with the suction opening 22 is formed. A rotating blade 30 which is rotated with an electric motor 51 is arranged in the suction chamber 18. A seal-lip brush 45 as a cleaning member is arranged so that the lower end of a brush 47 is rotated in the front/rear direction by the drive of the electric motor 51. When the rotating blade 30 is rotated with the electric motor 51, the seal-lit brush 45 is rotated in the front/rear direction, the dusts at the corner of the wall are scratched and sucked, and the decrease in the negative pressure in the suction chamber 18 is suppressed. Thus, the dusts at the corner of the wall, which cannot be taken with a suction force at the corner of the wall, can be scratched and removed.

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 in which a case body is provided at its front end with a cleaning body for maintaining airtightness with a floor surface.

[0002]

2. Description of the Related Art Conventionally, as a suction port body of an electric vacuum cleaner in which a seal body is provided at a front end of a lower surface of a case body to maintain airtightness with a floor surface, for example, one having a structure shown in FIGS. 13 and 14 is used. Are known.

The suction inlet 81 of the electric vacuum cleaner shown in FIGS. 13 and 14 is composed of two members, an upper main body case 82 and a lower main body case 83. A flexible bumper 84 is sandwiched between the upper surface of the case 83 and the peripheral edge thereof. Also, the lower body case
Opening 85 at the lower edge of the front side of 83
Is formed.

On the other hand, a flexible seal lip 87, which is a sealing body, has shaft holes 89 provided at both ends of the plate-like wall 88 in the longitudinal direction and at both ends of the opening 85 of the lower body case 83. Has a shaft portion 90 rotatably rotatably supported, and has a lower end rotatably supported in the front-rear direction, which is the traveling direction of the suction port body 81.

When the suction inlet 81 travels forward, the seal lip 87 rotates rearward due to the contact of the lower edge with the floor surface, and the dust near the wall rotates rearward. The suction port body 81 that is opened by suction is then suctioned and cleaned from the front surface.

[0006]

However, the suction port body 81 of the conventional electric vacuum cleaner shown in FIGS. 13 and 14 is used.
Since the seal lip 87 rotates back and forth when traveling in the front-rear direction, dust such as sand accumulated on the wall can be sucked from the front surface of the suction port body 81 opened by the rotation of the seal lip 81. However, there is a problem in that, for example, thread dust and cotton dust that adhere to carpets cannot be removed by suction.

In view of the above problems, it is an object of the present invention to provide a suction port body for an electric vacuum cleaner that can clean a wall well.

[0008]

A suction port body for an electric vacuum cleaner according to claim 1, wherein a case body having a suction port opened on a lower surface and a front opening portion continuous with the suction port on the front surface, and the front surface. A cleaning body provided at the front end of the case body such that the opening is openably and closably openable and at least a lower end edge of the cleaning body is movable in the front-rear direction, and at least a lower end edge of the cleaning body provided in the case body is moved in the front-rear direction. And a driving means.

The suction port body of the electric vacuum cleaner according to claim 2 is
A case body having a suction opening on the lower surface and a front opening portion continuous with the suction opening on the front surface, and a substantially cylindrical cleaning provided at the front end of the case body so as to be rotatable by closing the front opening portion. A body and a drive means provided on the case body for rotating the cleaning body are provided.

The suction port body of the electric vacuum cleaner according to claim 3 is
In the suction port body of the electric vacuum cleaner according to claim 1 or 2, the drive means is a power means for rotating a rotary cleaning body rotatably provided on the case body.

[0011]

In the suction port body of the electric vacuum cleaner according to the first aspect, the drive means is provided with the cleaning body provided at the front end of the case body by opening and closing the front opening portion continuous to the suction port of the case body. Since at least the lower end edge is moved in the front-rear direction, dust near the wall is scraped off and absorbed.

The suction inlet of the electric vacuum cleaner according to claim 2 is
Since the cleaning member provided at the front end of the case body is openably and closably closed at the front opening continuous with the suction port of the case body and is driven to rotate by the drive means, the dust on the wall is scraped off and satisfactorily absorbed.

The suction port body of the electric vacuum cleaner according to claim 3 comprises:
The suction port body of the electric vacuum cleaner according to claim 1 or 2, wherein the cleaning body is driven by a power means for rotating a rotary cleaning body rotatably provided on the case body, and thus a separate drive means is not required, and the case is The body can be miniaturized.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the suction inlet of the vacuum cleaner of the present invention will be described below with reference to the drawings.

In FIG. 1 to FIG. 3, reference numeral 11 denotes a suction port body which is laterally long with respect to the traveling direction. The suction port body 11 has a lower main body case 12 whose lower surface is opened, and a lower surface on an upper part of the lower main body case 12. And an upper main body case 13 having an open upper surface which is coupled and fixed to cover the upper main body case 13 and the lower main body case 12 along the peripheral surfaces thereof, such as polyurethane to a flexible member having flexibility. Formed bumper
A box-shaped case body 15 is formed by sandwiching 14 together.

Further, the lower main body case 12 has a rib portion 17 formed substantially vertically on the upper surface, a laterally long suction chamber 18 is formed in the front side which is the traveling direction side in a substantially left-right direction, and a rear side substantially The air passage chamber 19 that communicates with the suction chamber 18 in the center, and this air passage chamber
An electric motor chamber 20 located at one end of the air passage 19 and a control chamber 21 located at the other end of the air passage chamber 19 are defined.

Further, a suction port 22 of the suction chamber 18 is formed on the lower surface of the suction port body 11 facing the floor surface, and the front surface is formed in a concave shape continuously with the lower surface. A front opening 23 that opens is formed. In addition, a round hole-shaped engaging portion (not shown) is provided at an edge of the front opening 23 facing in the direction perpendicular to the traveling direction of the suction port body 11.

On the other hand, a communication pipe is provided at the center of the rear part of the suction port body 11.
A rotation shaft 27 is attached so as to be rotatable at a predetermined angle in the vertical direction. The communication pipe 26 has a front end rotatably fitted inside the air passage chamber 19 and faces the substantially central portion of the suction chamber 18, and communicates with the suction chamber 18 through the air passage chamber 19. To do. On the other hand, the rear end portion protrudes outward from the rear side from the suction port body 11,
The front end of the bent connecting pipe 28 is rotatably fitted to this rear end. The connection pipe 28 is detachably connected to the hose via an extension pipe (not shown) and further connected to the cleaner body. The suction chamber 18 is the air duct chamber 19 and the communication pipe.
It communicates with the dust collecting chamber of the cleaner body via 26, a connecting pipe 28, an extension pipe (not shown) and a hose.

A rotary blade 30 as a rotary cleaning member is rotatably supported in the suction chamber 18. As shown in FIGS. 4 and 5, the rotary blade 30 includes a substantially cylindrical shaft member 32 in which a groove portion 31 having a substantially anchor-shaped cross section is formed on the outer peripheral surface in the axial direction. The shafts 33 are integrally formed by projecting at both ends in the direction.

Further, a pulley 35 having a gear 34 on its outer peripheral surface is detachably engaged and fixed to one side of the shaft member 32. Then, at both ends of the shaft member 32, a bearing 36 is rotatably provided on the shaft 33 by a plurality of washers 37, the bearing 36 is engaged with a shaft supporting portion 38 provided on the case body 15, and the rotating blade 30 is attached. The case body 15 is rotatably supported.

A flexible strip-shaped blade portion 40 is engaged and fixed in the groove portion 31 of the shaft member 32. The blade portion 40 includes a strip-shaped blade 41 and a blade locking portion 42 that bulges in one direction in the thickness direction of the blade 41 in the thickness direction.
And the blade locking portion 42 is the groove portion 31 of the shaft member 32.
The blade portion 40 is attached to the shaft member 32 so as to project in a wall shape.

The rotary blade 30 has a blade portion 40.
Does not contact the flat floor surface F such as between the boards, but contacts the elastically deforming floor surface of the carpet or tatami, for example.
The lower end of the rotary blade 30 is provided so as to slightly project downward from the suction port 22.

Further, the suction port body 11 is provided on the front surface of the case body 15.
A sealing lip as a cleaning member that closes the front opening 23 so as to protrude toward the floor at the lower part of the front surface of the suction chamber 18 to improve the airtightness of the suction chamber 18 and to improve the dust collecting property near the wall. Brush 45 is attached.

As shown in FIGS. 1 to 4, the seal lip brush 45 has a front opening 23 at both ends in the longitudinal direction.
An elongated rod-shaped holding portion 46 rotatably supported by the engaging portion of
A brush 47 is formed in a wall shape along the longitudinal direction on a part of the outer peripheral surface of the holding portion 46. Then, in the seal lip brush 45, the holding portion 46 is axially supported by the engaging portion so that the tip of the brush 47 projects downward,
The lower end of 47 is attached to the front opening 23 so as to be rotatable in the front-rear direction which is the traveling direction of the suction port body 11.

Further, at one end of the holding portion 46 of the seal lip brush 45, that is, on the side where the pulley 35 of the rotary blade 30 is located, an arm portion 48 whose tip is bent and formed in an L-shape along the axial direction is provided. It is provided.

The seal lip brush 45 is attached so that its lower end abuts on a flat floor surface such as a space between plates.

Further, auxiliary wheels 49, 49 are rotatably supported on both front and rear sides of the suction port body 11 so as to project from the lower surface of the lower main body case 12. It is slidable on the floor by 49.

Further, in the electric motor chamber 20, an electric motor 51 as a power means for rotating the rotary blade 30 is arranged. Then, the belt 52 for power transmission, the pulley 54 fixed to the output shaft 53 of the electric motor 51 and the pulley 35 fixed to the end of the rotary blade 30, the output from the electric motor 51, through this belt 52. The rotating blade 30 is stretched around so as to rotate in the opposite direction to the traveling direction.

Further, a gear body 56 whose outer peripheral surface engages with the gear 34 of the pulley 35 of the rotary blade 30 pivotally supported is rotatably supported by the suction port body 11. And this gear body
A shaft pin 57 protruding in a rod shape along the axial direction is provided in the vicinity of the peripheral edge of one end face of the axial direction of 56, and one end of a substantially plate-shaped transmission plate 58 is rotatably supported by the shaft pin 57. Has been done. Also, the tip of the transmission plate 58 is attached to the arm 48 of the seal lip brush 45.
When the gear body 56 is rotated by the pulley 35 of the rotating blade 30 that rotates, the rotational movement of the gear body 56 is converted into forward and backward movement by the transmission plate 58 and the arm portion 48, and the seal lip brush The lower end 45 of the motor 45 is rotated in the front-rear direction by using the electric motor 51, which is power means, as a drive means.

Since the pulley 35 of the rotary blade 30 is attachable to and detachable from the shaft member 32, the belt must be preliminarily set when the rotary blade 30 and the seal lip brush 45 are assembled.
The pulley 35 around which the 52 is stretched, the gear body 56 and the transmission plate 58 are assembled, and the shaft member 32 of the rotary blade 30 is attached to the pulley 35.
It can be attached to the, and assembly workability can be improved.

On the other hand, the control room 21 converts a detection signal from a traveling direction detecting means (not shown) for detecting the traveling direction,
Control means 59 for controlling the drive of the electric motor 51 is provided.

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

At the time of cleaning, the suction port body 11 is connected to a cleaner body (not shown) through a hose and an extension pipe. Next, push while holding the end of the hose extension tube side,
The suction port body 11 is moved back and forth on the floor surface.

First, the control means 59 outputs signals detected by the traveling direction detecting means (not shown) such as the traveling direction of the suction port body 11.
, The electric motor 51 is rotationally driven in a predetermined direction and rotational speed to rotate the rotary blade 30 via the belt 52, and the gear body 56 is rotated by the pulley 35 of the rotating rotary blade 30 to transmit the transmission plate. The arm portion 48 of the seal lip brush 45 is rotated like a pendulum via 58, and the lower edge of the seal lip brush 45 is rotated in the front-rear direction to drive the rotating blade 30 and the seal lip brush 45 to the floor surface. Efficiently scrape off dust and perform cleaning.

At the wall, the suction lip 11 is run with the front surface of the suction lip 11 facing toward the wall, and the driven seal lip brush 45 efficiently scrapes dust near the wall, and Dust is sucked by negative pressure from the gap between the front opening 23 and the seal lip brush 45 which are slightly opened by driving.

The dust sucked from the floor surface into the suction chamber 18 through the suction port 22 in this manner is the air duct chamber 19, the communication pipe 26,
Dust is collected in the dust collection chamber of the cleaner body via the connecting pipe 28 and the hose.

Therefore, in the above embodiment, since the seal lip brush 45 is provided so as to close the front opening 23 which is opened to the front in order to suck the dust near the wall, the suction port body 11
It is possible to suppress a decrease in the negative pressure of the suction chamber 18, and it is possible to scrape off dust that cannot be removed by suction force such as a carpet on the wall, especially on the floor surface, and it is possible to perform efficient and good cleaning.

Further, since the electric motor 51 which is a power means for rotationally driving the rotary blade 30 is used as the driving means for driving the seal lip brush 45, it is not necessary to separately use the electric motor 51, and the seal lip brush 45 can be driven. It is possible to reduce the size of the suction port body 11 which can clean the wall well.

In the above embodiment, for example, the gear body 56 is movably supported so that the seal lip brush 45 is driven when the suction port body 11 is located near the wall when cleaning the wall. Good. In this case, the seal lip brush
When 45 is not driven, the front opening 23 is closed by the seal lip brush 45 to ensure sufficient airtightness, the negative pressure in the suction chamber 18 can be prevented from decreasing, and the cleaning property is further improved.

Further, a driving means such as an electric motor may be provided in addition to the electric motor 51 which is a power means for rotationally driving the rotary blade 30.

Further, the structure in which the lower end of the seal lip brush 45 is driven to rotate in the front-rear direction has been described, but the same effect can be obtained even if the entire seal lip brush 45 is slidably moved in the front-rear direction. To be

The suction port body 11 is not limited to a canister-type vacuum cleaner, but the suction port body 11 may be an upright type in which the suction port body 11 is directly formed on the lower surface of the vacuum cleaner body. can get.

Next, another embodiment will be described with reference to FIGS. 6 to 9.

In the embodiment shown in FIGS. 6 to 9, the seal lip brush 45 of the embodiment shown in FIGS. 1 to 5 is formed in a substantially cylindrical shape like the rotary blade 30 and is driven to rotate. is there.

That is, in FIGS. 6 to 9, 61 is a rotary cleaning body which is a cleaning body. In this rotary cleaning body 61, a brush 63 having short bristles is densely arranged on the outer peripheral surface of an elongated cylindrical main body 62. Have been flocked to. Incidentally, without brushing the brush 63 on the main body portion 62, polishing between the plates such as velvet or carpet, or winding something having an action such as scraping off the dust of the carpet,
As shown in FIG. 12, the blade 70 may be formed so as to project in the axial direction.

A pulley 65 is integrally provided at one end of the main body 62. Further, shafts 66 are formed so as to project along the axial direction at both axial ends of the main body 62.

The rotary cleaning body 61 is rotatably attached to the case body 15 by rotatably closing the front opening portion 23 with the shaft 66 being pivotally supported by an engaging portion provided at the edge of the front opening portion 23. ing. The rotary cleaning body 61 is attached so that its lower end abuts on a flat floor surface such as a space between plates.

The rotary drive of the rotary blade 30 is transmitted to the pulley 35 of the rotary blade 30 and the pulley 65 of the rotary cleaner 61, and the rotary cleaner 61 is rotated by the rotation of the rotary blade 30. The belt 67 is stretched around and the rotary cleaning body 61 is driven to rotate.

A gear is provided in place of the drive transmission belt 67, that is, as shown in FIGS. 10 and 11, the gear is engaged with the pulley 35 of the rotary blade 30 and the pulley 65 of the rotary cleaning body 61. It is also possible to rotatably provide a transmission gear 71 which is engaged with the rotary blade 30 and is rotated by the rotation of the rotary blade 30 driven by the electric motor 51 to rotate the rotary cleaning body 61.

Then, the rotary cleaning body 61 is driven together with the rotary blade 30 by the driving of the electric motor 51, so that dust is efficiently scraped off from the floor surface even on the wall.

Therefore, it is possible to prevent the negative pressure of the suction chamber 18 of the suction port body 11 from decreasing, and to scrape off dust that cannot be removed by the suction force such as a carpet especially on the floor surface near the wall, so that cleaning can be performed efficiently and satisfactorily. it can.

Further, since the rotary cleaner 61 is rotationally driven by the electric motor 51, it can be used as a drive wheel for causing the suction port body 11 to travel.

[0053]

According to the suction port body of the electric vacuum cleaner of the first aspect of the present invention, the cleaning means provided at the front opening of the case body moves at least the lower end edge in the front-back direction by the driving means, so that it is close to the wall. Can satisfactorily scrape off and absorb dust.

According to the suction port body of the electric vacuum cleaner of the second aspect, since the cleaning member provided in the front opening of the case member is driven to rotate by the driving means, the dust on the wall can be scraped off and absorbed. .

According to the suction port body of the electric vacuum cleaner of the third aspect, in addition to the suction port body of the electric vacuum cleaner of the first or second aspect, the cleaning body is driven by the drive means for rotating the rotary cleaning body. Therefore, it is possible to reduce the size of the case body without requiring a separate drive means.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a suction port body of an electric vacuum cleaner according to the present invention.

FIG. 2 is a partially cutaway plan view showing the suction port body of the above.

FIG. 3 is a bottom view with a part cut away.

FIG. 4 is a perspective view showing the vicinity of the pulley of the rotary blade of the above.

FIG. 5 is an exploded perspective view of the above rotary blade.

FIG. 6 is a partially cutaway side view showing another embodiment of the suction port body of the electric vacuum cleaner of the present invention.

FIG. 7 is a plan view showing a suction port body with a part cut away.

FIG. 8 is a bottom view with a part cut away.

FIG. 9 is a perspective view showing the vicinity of the pulley of the rotary blade of the above.

FIG. 10 is a partially cutaway side view showing still another embodiment of the suction port body of the electric vacuum cleaner according to the present invention.

FIG. 11 is a perspective view showing the vicinity of a pulley of the rotary blade of the above.

FIG. 12 is a partially cutaway perspective view showing a rotary cleaning body of yet another embodiment of the suction port body of the electric vacuum cleaner of the present invention.

FIG. 13 is a cross-sectional view of the vicinity of a seal lip showing an embodiment of a suction port body of a conventional vacuum cleaner.

FIG. 14 is a plan view showing the suction port body with a part cut away.

[Explanation of symbols]

 11 Suction port body 15 Case body 22 Suction port 23 Front opening 30 Rotating blade as rotary cleaning body 45 Seal lip brush 51 as cleaning body Electric motor as driving means and power means 61 Rotary cleaning body as cleaning body

Claims (3)

[Claims] 1. A case body having a suction opening on a lower surface and a front opening continuous with the suction opening on a front surface; A suction body of an electric vacuum cleaner, comprising: a cleaning body provided at a front end of the case body; and driving means provided at the case body and moving at least a lower end edge of the cleaning body in a front-back direction. . 2. A case body having a suction opening on a lower surface and a front opening portion continuous with the suction opening on a front surface, and the front opening portion closed to be rotatably provided at a front end of the case body. A suction port body for an electric vacuum cleaner, comprising: a substantially cylindrical cleaning body; and drive means provided on the case body for rotating the cleaning body. 3. The suction port body of the electric vacuum cleaner according to claim 1, wherein the drive means is a power means for rotating a rotary cleaning body rotatably provided on the case body.