JP2020110506A - Suction port body of vacuum cleaner and vacuum cleaner including the same - Google Patents

Abstract

To provide a suction port body of a vacuum cleaner and the vacuum cleaner including the suction port body which improves cleaning performance by enhancing airtightness between a suction port body and a cleaning surface and also is inexpensive and convenient without using an expensive electric motor.SOLUTION: Rib shape projections are consecutively arranged from one end to the other end of a brush chamber on an inner wall of the brush chamber in a rotation axis direction of a rotary cleaning body so as to have contact with an outer periphery of the rotary cleaning body.SELECTED DRAWING: Figure 3

Description

The present invention relates to a suction body of a vacuum cleaner and a vacuum cleaner including the suction body.

As background art of this technical field, there is JP-A-2013-212216 (Patent Document 1). In the suction body of the electric vacuum cleaner disclosed in this publication, a brush body that contacts the cleaning surface and maintains the airtightness of the cleaning surface and the suction body is provided behind the suction opening on the bottom surface (cleaning surface side) of the suction case body. It is provided.

JP 2013-212216 JP

However, in the suction body of the electric vacuum cleaner described in Patent Document 1, the bottom surface of the suction case body is composed of a plurality of parts in the longitudinal direction, whereas the brush body is provided in the central part. Therefore, it is possible to prevent the airtightness from leaking from the rear central portion of the suction port provided with the brush body.

It is an object of the present invention to provide a suction unit of an electric vacuum cleaner that improves cleaning performance and noise by improving airtightness between the suction unit and the cleaning surface, and an electric vacuum cleaner including the suction unit. It is in.

The object of the present invention is achieved by providing the airtight holding member across a plurality of components forming the bottom surface of the mouthpiece case body.

ADVANTAGE OF THE INVENTION According to this invention, by improving the airtightness of a suction body and a cleaning surface, while improving cleaning performance, the suction body of the vacuum cleaner which reduced noise and the vacuum cleaner provided with this can be obtained.

It is an appearance perspective view showing the whole vacuum cleaner concerning the present invention. It is a top view of the mouthpiece of Example 1 concerning the present invention. It is a bottom view of the mouthpiece of Example 1 concerning the present invention. It is a side view of the mouthpiece of Example 1 concerning the present invention. It is a top view of the state which removed the upper part of the mouthpiece of Example 1 concerning the present invention.

Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings. FIG. 1 shows an external view of an electric vacuum cleaner according to a first embodiment of the present invention. The electric vacuum cleaner 1 is composed of a cleaner main body 2 provided with operation switches SW, an extension pipe 5, and a suction body 6.

The cleaner main body 2 includes an electric blower 2a that generates a suction force, a dust collecting portion 2b that stores dust collected by the suction force of the electric blower 2a, and the like. In the present embodiment, a so-called rechargeable stick vacuum cleaner will be described as an example, but it is applied to a floor-moving type vacuum cleaner such as a cyclone type or a paper pack type or a non-rechargeable stick vacuum type. May be.

One end of the extension pipe 5 is connected to the connection port 2c of the cleaner body 2 so as to communicate with the dust collecting portion 2b of the cleaner body 2. The other end of the extension pipe 5 is connected to the suction body 6. Further, the extension pipe 5 is connected to a ventilation passage (not shown) and is provided with a power supply terminal (not shown) to which power is supplied from the cleaner body 2.

By operating the hand operation switch SW, it is possible to operate and stop the electric blower 2a, switch between high and medium strength, and operate and stop the electric motor 40 (see FIG. 5) provided in the suction body 6.

2d is a rechargeable battery that is a power source for driving the cleaner body 2 and the suction body 6.

FIG. 2 is a top view of the mouthpiece. As shown in FIG. 2, the mouthpiece 6 includes a mouthpiece case 10 having a substantially T-shape in a top view, and a mouthpiece joint 13 connected to the mouthpiece case 10.

The mouthpiece case 10 includes a mouthpiece body 11 that is elongated in the left-right direction (width direction) in a top view, and a connecting portion 12 that is connected to the mouthpiece joint 13 at the center of the mouthpiece body 11 in the left-right direction. .. A flow path R (see FIG. 3) that connects the mouthpiece main body 11 and the mouthpiece joint 13 is formed in the connecting portion 12.

A bumper 11a is provided on the mouthpiece main body 11 from the front end surface to the left and right side surfaces by insert molding. The bumper 11a is made of an elastic material such as rubber or elastomer, or a resin material such as polypropylene, to ensure airtightness inside the suction port main body 11 at the time of use and at the time of using the vacuum cleaner 1 (see FIG. 1). When the main body 11 collides with furniture or the like, it serves as a cushioning material for preventing damage to the furniture or the like and absorbing a shock to the mouthpiece main body 11.

The bumper 11a does not necessarily have to be provided on the mouthpiece main body 11 by insert molding, and may be provided on the mouthpiece main body 11 by means such as adhesion or fitting with a claw that does not unintentionally come off during use.

The mouthpiece joint 13 includes a first connecting portion 14 rotatably connected to the connecting portion 12, and a second connecting portion 15 rotatably connected to the first connecting portion 14. There is. The first connecting portion 14 has a substantially D shape in a top view of FIG. 2, and has a cylindrical shaft 14 a connected to the connecting portion 12. The shaft 14a has an axial direction that is the left-right direction of the suction port main body 11, and both ends of the shaft 14a are supported by bearing portions 12g (see FIG. 5) formed in the connecting portion 12. The first connecting portion 14 is configured to be rotatable from a state substantially parallel to the floor surface (cleaning surface) M (see FIG. 4) to a state substantially vertical. That is, by rotating the first connecting portion 14 with respect to the mouthpiece case 10 with the shaft 14a as a fulcrum, the extension pipe 5 (see FIG. 1) is substantially parallel to the floor M (see FIG. 4). It can be rotated between the different states.

The second connecting portion 15 is configured to be rotatable with respect to the first connecting portion 14 in the left-right direction of the mouthpiece body 11 (clockwise and counterclockwise in the plane of FIG. 2). Thereby, for example, the extension pipe 5 can be tilted from a state in which the extension pipe 5 is substantially perpendicular to the floor surface M to a state in which the extension pipe 5 is substantially parallel to the floor surface M. In addition, the second connecting portion 15 is provided with a power feeding terminal 15a for feeding power. The electric vacuum cleaner 1 of this embodiment (see FIG. 1) is configured so that the electric power supplied to the suction body 6 is supplied from the cleaner main body 2 through the extension tube 5.

FIG. 3 is a bottom view of the mouthpiece. FIG. 4 is a side view of the mouthpiece. As shown in FIGS. 3 and 4, the suction body 6 includes a rotary cleaning body (rotary brush) 20. A brush chamber Q having a suction port P on a bottom surface (a surface facing the cleaning surface) is formed in the suction case 10 (suction body 11).

The rotary cleaning body 20 is disposed on the front side in the front-rear direction along the left-right direction of the suction port body 11, and is rotatably supported in the brush chamber Q. The rotary cleaning body 20 includes a plurality of types of brushes 20a and 20b such as brushes having different hardness and height, and a rotary core that holds them in a spiral shape. (20 axial direction) is continuously provided from one end side to the other end side.

In the present embodiment, the case where the two types of brushes 20a and 20b are provided has been described as an example, but the present invention is not limited to this and may be one type, or three or more types. Alternatively, a configuration in which a blade member made of an elastic material such as rubber is spirally arranged between the brushes spirally arranged may be added, and can be appropriately changed. In this way, since the brush configuration of the rotary cleaning body 20 can be easily changed, there is also an effect that it is easy to deal with the suction body according to the purpose, such as a wooden floor or a carpet.

Further, since the brushes 20a and 20b are inserted into the plurality of spiral grooves, the assembly process is easy and the manufacturing cost can be reduced.

The suction body 6 includes a brush drive switch 16 and wheels 17 on the bottom surface of the suction case 10. The brush drive switch 16 is a switch that detects whether the bottom surface of the suction body 6 is in contact with the floor surface M (cleaning surface), and is configured with the wheels 16a. The wheel 16a is provided such that a part of the wheel 16a always projects from the bottom surface of the mouthpiece case 10 by a biasing means such as a spring. Then, when it is detected that the wheel 16a jumps out of the mouthpiece case 10 and is not in contact with the floor surface M, the electric motor 40 (see FIG. 5) is driven by the control of the circuit board 50 (control board) (see FIG. 5). The rotation of the rotary cleaning body 20 is stopped. Further, when it is detected that the wheel 16a is pushed in and is in contact with the floor surface M, the electric motor 40 is driven by the control of the circuit board 50, and the rotary cleaning body 20 rotates.

A brush table 31 that is attachable to and detachable from the suction port case 10 is provided behind the suction port P of the suction port case 10, and a pair of bearings that form a part of bearings are provided at both ends of the suction port P. The pressing members 60 and 61 are mounted and constitute the bottom surface of the mouthpiece case 10. The brush table 31 has substantially the same length as the length of the suction port P in the longitudinal direction.

Since the brush table 31 and the bearing pressing members 60 and 61 are separate members, a slight gap is formed between them. Since the gap is formed substantially behind the brush chamber Q, it is difficult to ensure airtightness.

Therefore, the fixed brush 30 is provided so as to straddle the brush base 31 and the bearing pressing member 61, and is provided so as to contact the floor surface M (cleaning surface) from the bottom surface. The fixed brush 30 has substantially the same length as the combined length of the brush base 31 and the bearing holding member 61.

As a result, the airtightness of the brush chamber Q is improved to improve the performance of collecting fine dust, and the dust repelled by the rotary cleaning body 20 causes a gap between the bottom surface of the suction case 10 and the floor surface M (cleaning surface). It has the role of preventing it from slipping through and exiting behind the suction body 6. Furthermore, there is also an effect of reducing noise by preventing the inflow of wind from the rear. In addition, since the fixed brush 30 is thus arranged over the plurality of components forming the longitudinal direction of the mouthpiece case 10, it is possible to widely cover the longitudinal direction of the mouthpiece case 10, so that these effects are further enhanced. Can be large.

The fixed brush 30 is locked to the brush base 31 and the bearing pressing member 61 by the claws 31a and 61a, but it may be fixed by adhesion, insert molding, or a combination thereof.

At this time, the fixed brush 30 is not locked to the suction case 10 but to the brush base 31 or the bearing pressing member 61, so that the assembly efficiency can be improved and the user can use the environment. It is also possible to adjust the operability and the cleaning performance by changing the brush table 31 to another member according to the above.

In addition, although the fixed brush 30 is provided behind the suction port P in the present embodiment, the brush chamber Q is similarly provided such as a soft member such as rubber or elastomer, a pile or a non-woven fabric which is hard to pass air, and the like. You may provide the member which can maintain the airtightness. Further, although the fixed brush 30 has been described as being provided so as to straddle two parts of the brush base 31 and the bearing member 61, it may be provided so as to straddle three or more parts. Further, these airtight holding members may be directly engaged with the suction case 10 without the brush table 31.

A brush member (brush) 62 is arranged on the pair of bearing pressing members 60 and 61. The brush member 62 is arranged inside the edge portions 60c and 61c provided on the lower surfaces 60b and 61b. By disposing such a brush member 62, the brush member 62 acts as a cushion member, and when the suction body 6 is in the forward leaning posture, the corners of the suction body 6 directly contact the cleaning surface. Therefore, the cleaning surface can be appropriately prevented from being damaged.

Since the brush member 62 is located axially outside the rotary cleaning body 20, it is possible to preferably collect dust outside the rotary cleaning body 20 that could not be captured by the rotary cleaning body 20.

Here, it is preferable that the brush direction of the brush member 62 is inclined toward the rear of the suction body 6, that is, the brush direction of the brush member 62 is forward with respect to the traveling direction of the suction body 6. Accordingly, it is possible to prevent the brush member 62 from becoming a resistance against the progress of the suction body 6.

FIG. 5 is a top view of the suction body 6 with the upper portion of the suction case 10 removed. As shown in FIG. 5, the suction body 6 includes a motor 40 that drives the rotary cleaning body 20 and a circuit board 50 that controls the electric motor 40 behind the rotary cleaning body 20 (see FIG. 3 ).

The electric motor 40 is attached to one end of the mouthpiece body 11 in the left-right direction. The output shaft of the electric motor 40 is arranged parallel to the left-right direction of the suction port main body 11. Further, the output shaft of the electric motor 40 extends toward one end side in the left-right direction and is connected to the rotary cleaning body 20 via the toothed belt 41 at one end portion (end portion on the left side in the drawing) inside the suction port body 11. There is.

The circuit board 50 is attached on the side opposite to the electric motor 40 in the left-right direction of the mouthpiece body 11. Further, the circuit board 50 has a rectangular board whose long sides are arranged along the front-rear direction and connectors 50a, 50b, 50c, which are interlocked with the electric motor 40, the suction joint 13, and the brush drive switch 16, respectively. A micro switch (not shown) for controlling the rotation of the electric motor 40 is connected. By connecting an electric motor or the like to the circuit board 50 via the connector in this way, it is possible to share the circuit board 50 with other models having different electric motors.

Although the electric motor 40, the suction joint 13, and the like are connected to the circuit board 50 by a connector in the present embodiment, they may be connected by soldering.

1 Electric Vacuum Cleaner 2 Vacuum Cleaner Main Body 2a Electric Blower 2b Dust Collection Part 6 Suction Body 20 Rotating Cleaning Body (Rotating Brush)
30 fixed brush 31 brush stand 40 electric motor 50 circuit board (control board)
60, 61 Bearing holding member
20a, 20b Brush for rotary cleaning body P Suction port M Floor surface Q Brush chamber

Claims (4)

A case body having a suction port on the bottom surface, a joint part that communicates with the cleaner body that generates suction force and sucks dust, and an airtight leak inside the case body around or on one side of the suction port on the lower surface of the case body. An airtightness holding member for preventing the airtightness, and the airtightness holding member is provided so as to straddle a plurality of parts constituting the case body, and an electric vacuum cleaner including the suction body of the electric vacuum cleaner. The suction body of the electric vacuum cleaner according to claim 1, wherein the airtight holding member is provided on a component that is attachable to and detachable from the case body, and the electric vacuum cleaner including the suction body. The suction member of the electric vacuum cleaner according to claim 1 or 2, wherein the airtightness securing member is made of a fiber member such as a pile or a non-woven fabric, and an electric vacuum cleaner including the suction member. The suction member of the electric vacuum cleaner according to any one of claims 1 to 2, wherein the airtightness ensuring member is made of a soft member such as an elastomer, and an electric vacuum cleaner including the suction member.

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