JP2000135181A - Electric vacuum cleaner - Google Patents

Abstract

(57) [Problem] To provide an electric vacuum cleaner having good operability and less damage to a surface to be cleaned. A floor nozzle body (31) having a rotary brush (32) at a suction port (30), an arm body (38) having one end rotatably supported by the floor nozzle body (31), and the arm body (38).
A front wheel 39 rotatably supported on the other end of the floor nozzle and abutting against the floor surface is provided, and the arm body 38 is rotated in accordance with the forward and backward movement of the floor nozzle main body 31, so that the floor nozzle main body is The distance from the floor was changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a rotary brush at a suction port in a general household.

[0002]

2. Description of the Related Art Conventionally, this kind of vacuum cleaner is disclosed in
9-70653.

Hereinafter, a conventional vacuum cleaner will be described with reference to FIGS. 9 and 10. FIG. A floor nozzle body 4 is provided at a lower portion of the cleaner body 3 having the dust collecting chamber 1 and the motor 2 therein, and the floor nozzle body 4 is centered on a rotating shaft 5 of the cleaner body 3. A rotary brush 7 is provided at a suction port 6 of the floor nozzle body 4.

Reference numeral 8 denotes the rotating brush 7 and the rotating shaft 5
And a belt connecting the shaft of the motor-2 located coaxially with the motor.

[0005] On the lower surface of the floor nozzle body 4, a front wheel 10 supported by a rotatable substantially L-shaped arm member 9 which is in contact with the floor is provided. -Rubber member 9
The projection 13 provided at the end of the adjustment lever 12 by rotating or sliding the switching member 11
The sliding member 14 is slid up and down by fitting or riding on the concave portion 15 of the sliding member 14.

The substantially L-shaped arm member 9 interlocking with the sliding member 14 rotates about the support shaft 16 when the sliding member 14 slides, and the floor of the front wheel 10 is rotated. The distance between the rotary brush 7 of the nozzle body 4 and the floor surface was adjusted by changing the amount of protrusion to the surface.

[0007]

However, in such a configuration, when the surface to be cleaned such as a carpet is cleaned, the switching member 1 depends on the length and type of the hair of the carpet.
1 had to be manually operated to adjust the height of the rotating brush 7, which was troublesome and poor in usability.

Further, when the front wheel 10 is used in a state of protruding from the floor surface, the distance between the suction port 6 and the floor surface becomes large, so that the suction port 6 does not stick to the floor surface and the operability is reduced. It improves, but the dust collection performance decreases.

When the front wheel 10 is used so as not to protrude from the floor surface, when the floor nozzle body 4 is run forward, the running direction of the floor nozzle body 4 and the rotation direction of the rotary brush 7 are the same. Has a self-running effect and improves operability. However, when the floor nozzle body 4 is run backward, the running direction of the floor nozzle body 4 and the rotating direction of the rotating brush 7 are reversed, and Since the brush 7 does not turn over,
In some cases, an excessive load is applied to a surface to be cleaned of a pet or the like, and the carpet or the like may be damaged.

In view of the above, the present invention is intended to solve the above-mentioned problems, and the suction port and the rotating brush are positioned in an optimum state during cleaning to prevent operability and damage to a carpet or the like. An object is to provide an easy-to-use vacuum cleaner.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a main body having a rotary brush built in a suction opening at a lower opening, and a structure in which the suction opening and a floor surface are moved in accordance with the longitudinal movement of the main body. With a variable means for varying the distance, for example, when the running direction of the main body and the rotating direction of the rotating brush are the same, the rotating brush is reduced by reducing the distance between the suction port and the floor surface by the varying means. It is in close contact with the cleaning surface, a self-propelled effect is generated, the operation force of the main body is reduced, and the operability is improved.
Further, when the running direction of the main body and the rotating direction of the rotating brush are reversed, the suction means can be separated from the floor surface by the variable means to prevent damage to the carpet and the like by the rotating brush and to increase the suction force. This reduces the suction force of the main body on the cleaning surface, thereby improving operability.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION
A main body in which a rotary brush is incorporated in a suction opening of the lower opening; and a variable means for changing a distance between the suction port and a floor surface in accordance with the forward and backward movement of the main body. When the rotation direction is the same, the distance between the suction port and the floor surface is reduced by the variable means, so that the rotating brush is in close contact with the cleaning surface, a self-propelling effect is generated, and the operation force of the main body is reduced, and the operation is performed. The property is improved. Further, when the running direction of the main body and the rotating direction of the rotating brush are reversed, the suction means can be separated from the floor surface by the variable means to prevent damage to the carpet and the like by the rotating brush and to increase the suction force. This reduces the suction force of the main body on the cleaning surface, thereby improving operability.

According to a second aspect of the present invention, the variable means has an arm having one end rotatably supported by the main body and the other end rotatably attached to the floor surface in contact with the floor surface. It is formed of a body, and when the body is run, the rotation of the arm body can be promoted by friction.

According to a third aspect of the present invention, a substantially plate-shaped auxiliary plate protrudes from the lower end of the arm body. The auxiliary plate comes into contact with the floor surface, and the arm body is formed by friction. Can be promoted.

According to a fourth aspect of the present invention, the end of the auxiliary plate is prevented from protruding from the outer periphery of the wheel when the arm is turned to a position at an acute angle with respect to the floor surface. For,
Even when the main body runs, the auxiliary plate does not damage the floor.

According to the fifth aspect of the present invention, since the auxiliary plate is formed of an elastic member such as soft vinyl chloride, it is possible to prevent the floor and the carpet from being damaged.

According to a sixth aspect of the present invention, the variable means is provided on the lower surface of the main body with a long hole oblique to the floor.
A rotatable wheel is attached to the elongated hole, and when the main body is run, the sliding of the front wheel is promoted by friction, so that the main body can be moved up and down.

In the invention according to claim 7 of the present invention, a substantially horizontal hole is formed in the floor from the end of the oblong hole oblique to the floor. When the vehicle is run, the wheels are positioned in the substantially horizontal holes, and can easily move the main body up and down without stopping easily in the obliquely provided long holes.

[0019]

(Embodiment 1) Hereinafter, a first embodiment 1 of the present invention will be described.
Will be described with reference to FIGS.

A motor chamber 19 containing a motor 18 is provided below the cleaner body 17, and a dust collection chamber 20 for collecting dust is provided above the motor chamber 19. This dust collection room 2
0 is connected to the upper part of the rear surface of the cleaner main body 17 and is rotatably provided.
A paper bag 22 is detachably provided at one end of the dust collecting chamber 20 at one end.

A hose 23 is connected to the other end of the intake pipe 21. A dust-collecting chamber lid 25 is formed in front of the dust-collecting chamber 20 to cover the opening 24 of the dust-collecting chamber 20, and a dust box 26 is formed in the rear. A motor is provided below the dust-collecting chamber lid 25. A motor chamber 19 having a built-in -18 is provided.

Reference numeral 27 denotes a traveling roller formed at a lower portion of the rear surface of the cleaner body 17. On the lower side surface of the cleaner body 17, a shaft 28 of the motor 18 is used as a rotation center 29.
A floor nozzle body 31 having a suction port 30 in a lower opening is rotatably provided. The suction port 30 is communicated with the suction pipe 21 through the hose 23, and a rotary brush 32 for removing dust is provided above the suction port 30. The length of the brush 33 of the rotating brush 32 is set so as to protrude from the suction port 30, and the belt 34 is hung on the rotating brush 32 and the shaft 28 of the motor 18 to rotate the rotating brush 32 in one direction. Let me.

A concave portion 35 is formed on the lower surface of the floor nozzle body 31, and a rotatable arm body 38 is connected to a support shaft 37 provided on a side wall 36 of the concave portion 35, so that the arm portion 38 is rotatable with respect to the floor surface. It turns from a right angle to an acute angle.

At the end of the arm 38, a rotatable front wheel 39 is provided. When the rotary brush 32 is rotating in the direction A when the floor nozzle main body 31 is pushed forward in FIG.
Front wheel 39 abuts the floor surface, and due to friction with the surface to be cleaned,
Rotate in the direction B (rearward), the floor nozzle body 31 descends,
The suction port 30 of the floor nozzle body 31 and the floor surface are close to each other to improve the dust collection performance, and at the same time, the brush 33 of the rotating brush 32
Is protruded from the suction port 30, a forward moving force is exerted by the rotational force of the rotating brush 32, and a self-propelling effect is obtained, so that traveling performance is improved.

Conversely, when the floor nozzle body 31 is pulled backward, as shown in FIG.
Abuts on the floor surface, rotates in the direction C (forward) due to friction with the surface to be cleaned, raises the floor nozzle body 31, separates the suction port 30 of the floor nozzle body 31 from the floor surface, and rotates the rotary brush 32. The brush 33 does not apply an unnecessary load to a surface to be cleaned such as a carpet, so that the carpet or the like is not damaged.

Conventionally, the height of the floor nozzle body 31 has been manually adjusted according to the surface to be cleaned. However, with the above configuration, the height of the floor nozzle body 31 is adjusted by the cleaner body 1.
Since the operation is automatically performed according to the traveling direction of 7, the operability is improved by eliminating unnecessary labor.

As shown in FIGS. 2 and 3, two parallel ribs 40 are formed at the end of an arm body 38 for holding the front wheel 39. A substantially plate-shaped auxiliary plate 41 is fixed to the provided convex rib 40 by press-fitting.

With the above structure, the floor nozzle body 31
When the vehicle travels, the auxiliary plate 41 comes into contact with the floor surface and the uneven surface of the carpet or the like, the frictional force increases, and the rotation of the arm body 38 is promoted. 38 can be operated.

Further, as shown in FIGS.
When the rubber body 38 is rotated rearward, the end of the auxiliary plate 42 is configured not to protrude from the outer periphery 42 of the front wheel 39 in contact with the floor surface.

With the above configuration, the floor nozzle body 31
When the vehicle travels in the front-rear direction, the end of the auxiliary plate 41 is located inside the outer periphery 42 of the front wheel 39.
This eliminates the risk of damaging the floor.

Further, since the auxiliary plate 41 is formed of an elastic member such as soft vinyl chloride, the frictional force is increased with respect to the floor surface, and the rotation of the arm body 38 is further promoted.
Further, since the auxiliary plate 41 is made of an elastic member such as soft vinyl chloride, it is possible to prevent the auxiliary plate 41 from being damaged even if it comes into contact with the floor surface or the uneven surface such as a carpet.

(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the first embodiment, the variable means is formed by the arm 8 having one end rotatably attached to the floor nozzle body 31, but in the present embodiment, the variable means is formed by a floor. A long hole 44 provided on the lower surface of the nozzle body 31 and oblique to the floor surface, and a shaft 4 movably provided in the long hole 44.
5 and a front wheel 39 rotatably attached to the shaft 45.

The end of the shaft 45 is partially locked in the elongated hole 44, and the shaft 45 and the front wheel 39 move slidably in the elongated hole 44.

According to the above configuration, the same effect as the configuration described in the first embodiment can be obtained, and the variable means of the floor nozzle main body 31 can be easily configured.

That is, in FIG.
When the rotary brush 32 is rotating in the direction A when the button 1 is pushed forward, the front wheel 39 contacts the floor surface and moves in the direction B (rearward) due to friction with the surface to be cleaned, and the floor nozzle Body 3
1, the suction port 30 of the floor nozzle body 31 comes into contact with the floor surface to improve the dust collection performance. At the same time, the brush 33 of the rotating brush 32 is protruded from the suction port 30, so that the rotating force of the rotating brush 32 causes the brush 33 to move forward. The self-propelled effect is obtained and the traveling performance is improved.

Conversely, when the floor nozzle body 31 is pulled backward, in FIG. 8, the front wheel 39 comes into contact with the floor surface and moves in the direction C (forward) due to friction with the surface to be cleaned. The floor nozzle body 31 rises, and the suction port 30 of the floor nozzle body 31
Is separated from the floor surface, and the brush 33 of the rotating brush 32 does not apply an unnecessary load to a surface to be cleaned such as a carpet.
It will not damage pets.

As shown in FIG. 6, a hole 4 which is substantially horizontal with respect to the floor is formed from the end of the long hole 44 which is oblique to the floor.
6 is linked to the elongated hole 44.

With the above structure, the floor nozzle body 31
, The front wheel 39 is pushed by the floor surface and the uneven surface of the carpet or the like, is positioned in the substantially horizontal hole 46, and does not stop halfway in the oblong 43 long hole 44. , The position of the front wheel 39 can be maintained.

[0040]

As described above, according to the first aspect of the present invention, the distance between the main body and the floor surface is adjusted according to the running direction of the main body, and the floor nozzle main body is made to self-run. The operability can be improved, and damage to a carpet or the like due to the rotating brush can be reduced.

According to the second aspect of the present invention, the height of the main body can be easily adjusted by the resistance in contact with the floor surface, and the rotation of the arm body is promoted, so that the arm body can be surely provided. Can be rotated to obtain reliability.

According to the third aspect of the present invention, since the auxiliary plate is formed from the arm, the rotation of the arm is promoted, and the arm is more reliably rotated. Reliability can be obtained.

According to the fourth aspect of the present invention, since the end portion of the auxiliary plate is formed so as not to protrude from the outer periphery of the front wheel, the floor surface and the surface to be cleaned are damaged by the auxiliary plate. No more worries.

According to the fifth aspect of the present invention, since the auxiliary plate is formed of an elastic member such as soft vinyl chloride, the arm member is turned by the frictional force and elasticity of the elastic member. The moving operation is further promoted, and the floor and the carpet are prevented from being damaged.

According to the invention of claim 6 of the present invention, a long hole oblique to the floor surface is provided on the lower surface of the main body, and the front wheel is disposed in the long hole. In addition to the effects of the invention, the configuration is easy and the cost can be reduced.

According to the invention as set forth in claim 7 of the present invention, the substantially horizontal hole provided at the end of the long hole is provided so that when the main body is moved back and forth, the front wheel is connected to the substantially horizontal hole. The front wheel can be reliably held without being stopped halfway in the oblique hole provided easily.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of a vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a partial side view of the vacuum cleaner.

FIG. 3 is a partially enlarged view of the vacuum cleaner.

FIG. 4 is an operation diagram when the electric vacuum cleaner moves forward.

FIG. 5 is an operation diagram when the electric vacuum cleaner moves backward.

FIG. 6 is a partial side view of a vacuum cleaner showing a second embodiment of the present invention.

FIG. 7 is an operation diagram when the electric vacuum cleaner moves forward.

FIG. 8 is an operation diagram when the electric vacuum cleaner moves backward.

FIG. 9 is a side view of a conventional vacuum cleaner.

FIG. 10 is a partially enlarged view of the electric vacuum cleaner.

[Explanation of symbols]

 17 Vacuum cleaner body 30 Suction port 31 Floor nozzle body 32 Rotary brush 38 Arm body 39 Front wheel 41 Auxiliary plate 42 Outer circumference 43 Oblique 44 Elongated hole 46 Substantially horizontal hole

Claims (7)

[Claims] 1. A vacuum cleaner comprising: a main body having a rotary brush built in a suction opening at a lower opening; and variable means for changing a distance between the suction opening and a floor surface in accordance with the forward and backward movement of the main body. 2. The variable means is formed by an arm having one end rotatably supported by the main body and a front wheel rotatably mounted on the other end in contact with the floor. Vacuum cleaner. 3. The vacuum cleaner according to claim 1, wherein a substantially plate-shaped auxiliary plate protrudes from a lower end of the arm body. 4. The vacuum cleaner according to claim 3, wherein the end of the auxiliary plate is set so as not to protrude from the outer periphery of the front wheel when the arm body is turned to a position substantially at an acute angle with respect to the floor surface. . 5. The vacuum cleaner according to claim 3, wherein the auxiliary plate is formed of an elastic member such as soft vinyl chloride. 6. A variable means is provided on a lower surface of a floor nozzle main body with an oblong hole oblique to the floor surface, a rotatable front wheel provided in the elongate hole, and a forward / backward movement of the floor nozzle main body. The vacuum cleaner according to claim 1, wherein the front wheel is formed so as to be slidable back and forth. 7. The vacuum cleaner according to claim 6, wherein a substantially horizontal hole is formed from the end of the elongated hole oblique to the floor surface.