JPS6349485B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner having a rotating brush driven by an electric motor at its suction port.

BACKGROUND ART Conventionally, some vacuum cleaners with a rotating brush installed in the suction port have an electric roller provided at the bottom of the main body, and the direction of rotation of the roller can be changed in conjunction with the back and forth movement of the main body.

However, with this type, the rotating brush rotated in one direction regardless of the direction of rotation of the roller, so the brush may rotate in the opposite direction to the direction of movement of the main body, which reduces operability. Was. There were also problems such as overloading the surface to be cleaned and causing damage.

The present invention solves these conventional problems, and not only reduces the operating force but also allows the surface to be cleaned to be cleaned reliably and without causing any damage.

In order to achieve the above object, the present invention provides a main body of a vacuum cleaner including a rotating brush that scrapes dust from a surface to be cleaned into a suction port, and an electric motor serving as a driving source for the rotating brush;
An operating handle attached to the main body, a handle provided on this handle that can be moved back and forth and having an operational neutral point, and an operation that transmits the back and forth movement of this handle to the forward/reverse rotation switching switch of the electric motor. The rotating brush is configured to rotate in the forward direction as the main body moves.

In this configuration, the rotating direction of the rotating brush is
The rotating brush is automatically set to always move in the forward direction with respect to the movement of the main body, so the rotating brush does not become an obstacle to the movement of the main body, and damage to the surface to be cleaned can also be prevented.

One embodiment will be described below with reference to the drawings.

In the figure, 1 is the main body of the vacuum cleaner, which includes an electric blower 2, a rotating brush 4 that sweeps dust from the surface to be cleaned into the suction port 3, an electric motor 5 that drives the rotating brush 4, and a dust box 6. ing.

The main body 1 is composed of an upper main body 7 and a lower main body 8,
A handle 9 for operating the main body is pivotably mounted on the back surface thereof, and a handle 10 is movably attached to the end of the handle 9. Furthermore, the dust box 6 has a removable filter 11 for collecting dust.
will be decorated.

The rotating brush 4 has a shaft of an electric motor 5 which is a driving source and a pulley 12 installed at one end of the rotating brush 4.
Rotation is transmitted by a belt 13 installed between the two.

The electric motor 5 can be switched between forward and backward rotations by switching the handle 10 when it is operated.

The handle 10 is split into two parts, and a screw 14 for attaching the handle 10 is positioned through a washer 16 supported by a spring 15. And in the stationary state, washer 1
6 is located at the center of an oblong boss hole 17 provided in the handle 9.

When moving the main body 1 forward, a force in the direction A against the spring 15 is applied to the handle 10, causing it to slide in the same direction, and the switch 19 is activated by the operating part 18, which is a cam-shaped protrusion provided on the back side of the handle. enter. Main body 1
When moving the vehicle backwards, the handle 10 slides in the reverse A direction and the switch 21 is turned on by the operating section 20. The switch 19 operates the circuit so that the rotating brush 4 moves forward, and the switch 21 operates the circuit so that the rotating brush 4 moves backward. Note that the handle 10 is always returned to its resting state by a spring 15.

As described above, according to the present invention, the rotation direction of the electric motor is switched by the force applied to the handle when moving the main body back and forth, and the rotating direction of the rotating brush is automatically set in the forward direction with respect to the moving direction of the main body. It can truly improve operability because it is set according to the
It also reliably prevents damage to the surface to be cleaned, such as by tearing out carpet hair. In addition,
While the main body is left still, the rotating brush can also be stopped, making it possible to further ensure protection of the surface to be cleaned, and also to save power. Furthermore, conventionally, the main body position was raised by raising the handle and the brush was moved away from the carpet surface, but such a complicated mechanism is not necessary.

Note that the switching switch shown in this embodiment is just one example, and in short, the movement of the handle in accordance with the forward and backward movement of the main body is used to switch the rotation direction of the rotary brush, thereby providing the effect of assisting the operation of the main body. Furthermore, the configurations of the switch and the operating section are not limited to those shown in the embodiments.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a sectional view of the main body, Fig. 3 is an exploded perspective view of the handle and handle portion, and Fig. 4 explains the operation of the switch. FIG. 5 is a plan view of the same. 1...Body, 2...Electric blower, 4...Rotating brush, 5...Electric motor, 9...Handle, 10...
Handle, 18, 20...operation unit, 19, 21...switch.

Claims (1)

[Scope of Claims] 1. A main body of a vacuum cleaner having a rotating brush that scrapes dust from a surface to be cleaned into a suction port and an electric motor serving as its driving source, an operating handle attached to the main body, and a front and rear end attached to the handle. It is equipped with a handle that is movable and has an operational neutral point, and an operation part that transmits the forward and backward movement of the handle to a switch for switching forward and reverse rotation of the electric motor, and as the main body moves, the rotating brush is rotated. A vacuum cleaner set so that it rotates in the forward direction. 2. The vacuum cleaner according to claim 1, wherein the operating portion is constituted by a cam-like projection provided on the handle. 3. Claim 1, in which the handle is biased forward and backward by a pair of springs, and the operational neutral point of the handle is set at the point where the forces of these springs are balanced.
Vacuum cleaner as described in section.