JPS61238220A - Floor nozzle for electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum cleaner nozzle with rotating brushes.

Conventional technology In this type of conventional floor nozzle, the floor nozzle body connected to the suction side of a vacuum cleaner has a suction chamber with a rotating brush inside and a turbine chamber with an air turbine inside. However, these compartments are connected through ventilation holes.

When you run a vacuum cleaner, the suction force causes air to flow into the suction chamber, then through the ventilation chamber, and then into the turbine chamber, causing the air turbine to rotate. This rotation is then transmitted to the rotating brush via a power transmission means such as a belt.

Another method is the so-called electric brush type, in which a rotating brush drive electric motor is placed inside the floor nozzle body, and a power cord is wired from the outlet provided in the vacuum cleaner body to the outer circumference of the hose extension tube to drive the rotating brush. There is a floor nozzle.

Problems to be Solved by the Invention In the case of the former air turbine type floor nozzle, the rotational force of the rotating brush is generated by the air flowing in due to suction rotating the air turbine. Therefore, when the amount of air inflow decreases, the air The air flow rate hitting the turbine is reduced and the output of the rotating brushes is also reduced.

In this case, the rotating brush may not be able to rotate due to the resistance of the carpet.

In addition, since an air turbine is placed in the middle of the inflow path and the air turbine is rotated by the suction force, it can only be used with a vacuum cleaner with a large suction force, and most of the performance of the vacuum cleaner itself is dependent on the air turbine. There is a problem with consuming it.

Another problem is that the air turbine makes very noisy noise when it rotates.

In addition, in the case of the latter type of electric brush type floor nozzle, the wiring that sends current to the electric motor inside the floor nozzle runs from the outlet installed in the vacuum cleaner body to the floor nozzle, and is attached to a hose or extension pipe with a hook. Most of the time, this wiring work is very troublesome to prepare for cleaning and clean up after cleaning.

In addition, this electric brush type floor nozzle was designed for serious carpet cleaning, and because it drives a large rotating brush, the electric motor is also large, making the entire floor nozzle large and making cleaning operations very difficult. It was something.

To solve these drawbacks, a system was devised in which a battery was installed inside the floor nozzle and a rotating brush was driven by an electric motor, but unlike the electric brush type, there was no wiring, so
It had the disadvantage that it could not be operated at hand.

The present invention eliminates these conventional drawbacks and provides a floor nozzle that is easy to use and has excellent performance.

In order to solve the problem, a power supply ON/OFF switch is linked to a connection case that can be raised and lowered on the floor nozzle body.

For production The effect of this technical means is as follows.

That is, when the floor nozzle body is placed on the surface to be cleaned, the connection case is kept at a certain angle with respect to the floor nozzle body, so that the switch is in the closed state and the electric motor and rotating brush are automatically activated. It is intended to start the process.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

In FIGS. 1 to 3, 7 is a floor nozzle body constructed by connecting upper and lower body members 8°9 via a bumper 10;
A suction chamber 12 containing a rotating brush 11 is formed in front of it, and a battery 13 and an electric motor 14 are formed in the rear.
are arranged approximately symmetrically. Reference numeral 15 denotes a substantially semi-cylindrical connection case, which is disposed at the rear center of the suction chamber 12 and connected to the upper and lower main body members 8 and 9 so as to be able to rise and fall. A connection pipe 16 is rotatably connected to the opening of the connection case 15, and is connected to the suction side of the vacuum cleaner. 17 is electric motor 1
It is a power shaft that takes out the rotational force of 4, and there is a pulley 18 at the tip.
is installed. A bell from this boo IJ-18 to a pulley 19 attached to one end of the rotating brush 11)
20 is applied, and power is transmitted thereby.

Reference numeral 21 denotes bearings provided at both ends of the rotating brush 11. 22
is a switch that operates the electric motor 14. Reference numeral 23 denotes a switch opening/closing cam provided at one end of the connection case 16, which opens and closes the switch 22 according to the rotation angle of the connection case 15 in the vertical direction with respect to the floor nozzle body 7. The shape of the cam 23 is configured such that the switch 22 is in an open state when the connection case 15 is at the uppermost angle and the lowermost angle.

To clean, connect the floor nozzle body to the vacuum cleaner body,
When the switch on the main body of the vacuum cleaner is operated and the connection case 15 is set to the operating angle, the cam 23 closes the switch 22, thereby driving the electric motor 14 and rotating the rotating brush 11. In such cases, the rotating brush 11 scrapes up dust from the surface to be cleaned, and the suction force of the cleaner body sucks the dust.

Therefore, the rotation of the rotating brush decreases due to the decrease in the suction power of the vacuum cleaner body, which eliminates the problem of performance deterioration.Also, since there is no loss of suction power due to the turbine, even a vacuum cleaner body with low performance is sufficient. It is possible to obtain excellent cleaning performance, and since there is no noise generated by the turbine, a quiet floor nozzle can be obtained.

Furthermore, a floor nozzle that does not require wiring, can be used with all current vacuum cleaners, and has greatly improved carpet cleaning performance can be obtained.

Effects of the Invention As described above, the present invention reduces noise by driving the rotating brush with an electric motor using battery power.

This reduces performance loss and eliminates the need for wiring, while also making it possible to operate the floor nozzle just by operating the vacuum cleaner itself. This can greatly improve performance.

Furthermore, according to the present invention, the switch can be opened when the floor nozzle is lifted above the surface to be cleaned, that is, when the connection case is at the lowest position, thereby preventing battery life deterioration and abnormally high speed rotation due to no load. It is also possible to suppress noise generation and deterioration of bearing life.

[Brief explanation of drawings]

FIG. 1 is a plan view of a floor nozzle showing an embodiment of the present invention with the upper main body member removed, FIG. 2 is a sectional view, and FIG. 3 is a perspective view. 7...Floor nozzle nonstop, 11...Rotating brush, 13...Battery, 14...
Electric motor, 15... Connection case, 22...
·switch. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3

Claims (1)

[Claims] A battery, an electric motor, a rotating brush driven by the electric motor, and a switch are installed inside the floor nozzle body, and the switch is opened and closed in conjunction with a connection case that is attached to the floor nozzle body so that it can be tilted up and down. Floor nozzle for vacuum cleaner.