JPH0554768B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the configuration of a switch for controlling the drive of an upright vacuum cleaner.

Conventional technology In general, upright vacuum cleaners have a switch that controls the electric blower or lighting device on the top of the main body or on the handle. An electrical contact switch is used. However, when this type of switch is installed, it is necessary to turn it on and off each time objects such as the floor are moved during cleaning work, and if you forget to turn it off, the rotating brush of the floor nozzle will not move There was a problem that if the same area was covered with carpet, it would damage the carpet.

Therefore, in order to solve this problem, an upright-type vacuum cleaner has been proposed which has a switch that automatically stops the electric motor for driving the rotating brush when the floor nozzle part is resting on the floor surface. Showa 56
It is known from Publication No. -40119. This configuration will be explained with reference to FIGS. 4 to 6.

In FIGS. 4 to 6, 1 is a main body case in which an electric blower 2 is built in, and a suction port 3 is formed on the lower front surface of the main body case, and a dust collection section 4 is provided in communication with the suction port 3. There is. A communication port 5 is formed between the dust collecting section 4 and the electric blower 2. Further, in the vicinity of the suction port 3, a rotary brush 6 is rotatably provided, the lower part of which projects downward so as to come into contact with the floor surface. This rotating brush 6 is connected to an electric motor 7 by a belt 8. A handle 9 provided at the upper rear portion of the main body case 1 has a power switch 11 on its handle portion 10. The handle attachment part 12 of the main body case 1 has two
Two guide recesses 13 and 14 are formed, and springs 15 and 16 are bonded to these guide recesses 13 and 14, respectively. This spring 15,1
A handle holder 17 is slidably provided between the handle holders 6 and 6, and a handle 9 is fixed to the handle holder 17. Further, switches 18 and 19 are provided which are closed when the handle holder 17 moves forward or backward from the center position to control the energization. Electrical connections between the electric blower 2, power switch 11, etc. are constructed as shown in FIG. A power switch 11 and an electric blower 2 are connected in series to the power source, and switches 18 and 1 are connected in parallel to the electric blower 2 and an electric motor 7.
A series circuit consisting of 9 is connected.

The operation of the above configuration will be explained below.

First, after grasping the handle 10 of the handle 9 and turning on the power switch 11, the main body case 1 is moved forward or backward using the handle 10 to perform cleaning work. By turning on the power switch 1, the electric blower 2 becomes energized and sucks dust into the dust collecting section 4 through the suction port 3. On the other hand, even if the power switch 11 is turned on, the operation of the electric motor 7 differs depending on the state of the main body case 1. That is, when the handle 9 is pushed or pulled forward to move the main body case 1 relative to the floor, the handle pedestal 17 connected to the handle 9 is guided against the elasticity of the spring 15 or 16. Recess 13
Or it is displaced along the guide recess 14 and closes the switch 18 or switch 19. switch 18
Alternatively, when the switch 19 is closed, the electric motor 7 becomes energized, and the rotating brush 6 rotates.
On the other hand, since no force is applied in the front-rear direction to the handle 9 that stops the movement of the main body case 1 in order to move an article on the floor, etc., the spring 15 or 16 is not applied to the handle holder 17. No shearing force acts against the elasticity, the handle pedestal 17 is located at the neutral position, and the switch 1
8 and 19 are both in an open state, the power supply to the electric motor 7 is not cut off, and the rotating brush 6 is stopped.

Problems to be Solved by the Invention However, in the conventional configuration described above, when objects on the floor are moved during the cleaning process, the electric motor 7 that rotates the rotating brush 6 is stopped, but the electric blower 2 is stopped. It continues to operate and consumes a lot of power. Also, the power switch 11 and the switches 18,1
9, three switches, and spring 15,
16 etc. are used to control the drive of the electric motor 7, which requires a large number of parts and is problematic in terms of parts cost.

The present invention solves the above conventional problems,
To provide an upright vacuum cleaner with excellent operability and quality, in which the drive of an electric blower is automatically controlled depending on whether or not a user grips a handle part of the handle.

Means for Solving the Problems In order to achieve this object, the upright vacuum cleaner of the present invention includes a floor nozzle section, which is rotatably connected to the floor nozzle section, and a dust collecting section and the floor nozzle section. a main body part having an internal electric blower that guides air sucked from the nozzle part to the dust collecting part; a handle extending upward from the main body part and having a handle part at the upper end; A pressure switch for controlling the operation of the electric blower is provided, and the pressure switch is arranged so as to be located below the handle when the handle is tilted.

Effect With the above configuration, when the user is holding the handle with his/her hand, the pressure switch is closed and the electric blower is excited, and when the user is taking his/her hand off the handle, the pressure switch is closed. When it opens, the electric blower will stop.

Embodiment An embodiment of the present invention will be described below in Figures 1 to 3.
This will be explained with reference to the figures.

In FIGS. 1 to 3, 20 is the rotating brush 2.
1, and a suction port 23 is formed on the lower surface 22 of this floor nozzle section. Further, rollers 24 and 25 are rotatably attached to the lower surface 22 to maintain a substantially constant gap between the floor surface and the lower surface 23. A main body part 26 is provided at the rear of the floor nozzle part 20 so as to be tiltable. The main body 26 includes an electric blower 27 that sucks dust and rotates the rotating brush 21, a filter 28 that collects dust, and a dust collector 29. The electric blower 27 and the rotating brush 21 are connected by a belt 30. Floor nozzle part 2
0 and the main body portion 26 are communicated with each other through a hose 31.
A handle 32 for operation is provided at the upper end of the main body part 26, and a handle part 32a bent in a substantially dogleg shape is formed at the end of the handle 32. This handle portion 32a is made of hard synthetic resin. A pressure switch 33 is attached to the handle portion 32a in a string shape. This pressure switch 33 is a pressure sensitive resistor layer 33 made of conductive rubber or the like whose electrical resistance value between both surfaces decreases when pressure is applied.
a, and conductor layers 33b and 33c disposed on both sides of the pressure-sensitive low antibody layer 33a. The conductive layers 33b and 33c are connected in series to the electric blower 27 and the power source by a connecting wire 34. The pressure switch 33 and the handle portion 32a are fixed by a grip 35 made of flexible and insulating synthetic resin.

The operation of the above configuration will be explained below.

First, as shown in FIG. 3 for cleaning work, when the user grasps the handle 32a with his/her hand, the pressure switch 33 is activated by the force of the grip and the pressure generated as it is bent. Piezoresistive layer 3
Pressure is applied to 3a, the electrical resistance value between both surfaces decreases, electrical conduction occurs between conductor layers 33b and 33c, and pressure switch 33 is closed. Here, the electric blower 27 is driven. Next, the user
When you release your hand, the pressure switch 33 assumes the shape shown in FIG. 1, no pressure is applied to the pressure sensitive resistor layer 33a, the conductor layers 33b and 33c are insulated, and the pressure switch 33 is in an open state. Then,
The electric blower 27 stops.

With the above configuration, according to the present embodiment, it is possible to control the drive of the electric blower 27 depending on whether or not the user is holding the handle part 32a, and furthermore, the handle part 32a has a bent shape. By resisting the pressure switch 33 in a chord shape, the pressure caused by the grip force and bending is applied to the pressure sensitive resistor layer 33.
Since the voltage is applied to the pressure switch 33, even users with weak grip strength (women and children) can operate it easily, and even if the upright electric blower falls over, it can prevent pressure from being applied to the pressure switch 33 and malfunctioning. It is something.

Effects of the Invention As is clear from the description of the embodiments above, according to the upright vacuum cleaner of the present invention, a pressure switch for controlling at least the drive of the electric blower is provided in the handle portion of the handle, so that the user can easily press the handle. The drive of the electric blower is controlled by the grip on the part, eliminating the need for on/off operations found in electrical contact switches, etc., and also preventing damage to floors etc. due to forgetting to turn off the switch.
In particular, in the present invention, the pressure switch is arranged so as to be located below the handle when the handle is tilted.
The load of the main body is added as the operating pressure of the pressure switch, and the burden on the user can be reduced accordingly. Therefore, according to the present invention, a device with excellent operability,
A highly reliable upright vacuum cleaner can be provided.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of essential parts of an upright vacuum cleaner according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of the upright vacuum cleaner, Fig. 3 is an explanatory view of the same, and Fig. 4 is a longitudinal sectional view of the main parts of an upright vacuum cleaner according to an embodiment of the present invention. FIG. 5 is a longitudinal sectional view of a conventional upright vacuum cleaner, FIG. 5 is a sectional view of the main parts thereof, and FIG. 6 is an electric circuit diagram of the upright vacuum cleaner. 20... Floor nozzle part, 26... Main body part, 27...
...Electric blower, 32...Handle, 32a...Handle portion, 33...Pressure switch.

Claims (1)

[Scope of Claims] 1. A floor nozzle section and an electric blower that is rotatably connected to the floor nozzle section and that guides air sucked from the dust collection section and the floor nozzle section to the dust collection section. a handle that extends upward from the main body and has a handle at its upper end; and a pressure switch that is provided on the handle and controls the operation of the electric blower. An upright vacuum cleaner in which the pressure switch is arranged below the handle. 2. The upright-type vacuum cleaner according to claim 1, wherein the pressure switch is arranged in a string shape on the bent handle.