JPH04654B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vacuum cleaner equipped with a suction tool incorporating a rotating brush.

2. Description of the Related Art As a conventional vacuum cleaner of this kind, one constructed as shown in FIGS. 5 to 7, for example, is known.

To explain based on the drawings, reference numeral 1 denotes a vacuum cleaner body consisting of a lower body 2 and an upper body 3, and an electric blower 4.
is built-in. A dust box 5 is provided on the front side of the cleaner body 1, and a suction tool 6 is further provided on the front side of the dust box 5. A filter 7 is provided inside the dust box 5, and an electric motor 8 is provided inside the suction device 6.
Rotating brush 1 driven via belt 9 by
0 is set. 11 is a handle whose lower end is pivotally attached to the lower body 2;
A handle grip 12 is attached to the upper end of the handle. FIG. 7 shows the attachment part of the handle grip 12 in detail. The handle grip 12 is provided so as to sandwich the upper end of the handle 11 from above and below, and the handle grip 12 is installed vertically in a long hole 13 formed in the front and back direction at the upper end of the handle 11. A mounting screw 14 is passed through the grip, and a nut 15 is screwed into the threaded end of the screw 14 to attach a handle grip 12 to the upper end of the handle 11 so as to be slidable back and forth. Note that a spring 18 connected by a washer 17 on the inside of the handle grip 12,
A screw 18 is provided along the elongated hole 13, and a screw 14 is passed through the washer 17 so that the screw 14 is centered in the longitudinal direction of the elongated hole 13 when no load is applied to the handle grip 12. The handle grip 12 is biased so that it is located at the center in the sliding direction. 19,20
is a switch for changing the rotation direction of the electric motor 8, and is provided at the upper end of the handle 11 in a position covered by the handle grip 12. When the handle grip 12 is slid forward, the electric motor 8 is rotated by the switches 19 and 20. The rotating brush 10 can be rotated in the same direction by switching the direction forward, and the handle grip 12 can be rotated in the same direction.
When the motor 8 is slid rearward, the switches 19 and 20 are switched, and the electric motor 8 can rotate rearward, thereby rotating the rotary brush 10 in the same direction.

In the above configuration, when the handle grip 12 is pushed forward with a force that overcomes the urging force of the spring 18, the rotation of the electric motor 8 is switched forward by the switches 19 and 20, and the vacuum cleaner uses the rotating brush 10 to remove dust from the carpet, etc. It moves forward by the rotational force of the rotating brush 10 while scraping it up. At this time,
Due to the suction force of the electric blower 4, the rotating brush 1
The dust stirred up by 0 is collected in dust box 5. When the handle grip 12 is pulled rearward, the rotation of the rotating brush 10 is controlled by the switch 1.
9 and 20, the vacuum cleaner moves rearward while stirring up dust by the rotation of the rotary brush 10.

Problems to be Solved by the Invention When such a mechanism for switching the switches 19 and 20 by sliding the handle grip 12 in the front-rear direction is adopted, for example, in a vacuum cleaner with a hose extension tube, the handle grip provided at the end of the hose It is easy to think of providing the above-mentioned switch switching mechanism on the handle part, but if a handle grip that can be slid back and forth is provided on the hand part, a nozzle for space or a nozzle for furniture can be attached to the tip of the extension tube, making it easier to adjust the details. When cleaning, there is always a relative movement between the handle grip and the extension tube, making cleaning difficult.

The present invention solves these problems,
To provide a vacuum cleaner which does not shake even when various nozzles are attached to the tip of an extension tube, the hand part, etc., and which makes it easy to clean small areas.

Means for Solving the Problem In order to solve this problem, the present invention combines an electric blower, a vacuum cleaner body with a built-in dust collection part, and a suction tool with a built-in rotating brush that is rotated forward and backward by an electric motor into a hose. and configured to communicate through an extension tube,
A linking means is provided between the suction tool and the extension pipe to allow relative movement thereof within a predetermined range, and the switch operates to switch the rotational direction of the electric motor to match the moving direction of the suction tool due to the relative movement. is disposed inside the suction tool, and the linking means includes a shaft and a shaft support, and the shaft is set to be rotatable relative to the shaft support and movable in the front and rear direction. be.

Function With this configuration, the switch built into the suction device can be switched by pushing the extension tube in the direction in which the suction device moves forward or pulling it in the direction in which the suction device retreats, thereby controlling the rotating direction of the rotating brush. can do. In addition, when cleaning small areas by attaching a nozzle or shelf nozzle to the tip or hand part of the extension tube, there is no switch part on the hand part, so there is no movement back and forth at the hand part, and it is possible to clean small areas. Cleaning can be done efficiently.

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

In FIGS. 1 to 4, 21 is a vacuum cleaner body equipped with an electric blower and a dust collection part (not shown) inside, and a power nozzle (floor suction device) 22 is attached to an extension tube. 23 and are communicated via a hose 24. Reference numeral 25 denotes a power cord installed along the extension tube 23, which connects to the conductor buried in the hose 24 to connect the vacuum cleaner main body 21.
and the power nozzle 22 are electrically coupled. A rotating brush 27 is provided inside the suction chamber 26 on the front side of the power nozzle 22, and the rotation of the electric motor 28 provided at the rear of the suction chamber 26 is caused by the rotation of the belt 2.
It is designed to be transmitted via 9. Incidentally, the tip of the extension pipe 23 and the suction chamber 26 are communicated with each other by an auxiliary hose 30. One end of the auxiliary hose 30 is supported by the rear wall of the suction chamber 26, and the other end is supported by the upper end of a support 31 that is pivotally supported by the suction chamber 26 and is fitted into the tip of the extension pipe 23. The distal end of the extension tube 23 is removably fitted into a ring portion 31 a at the upper end of the support 31 and is fitted with the other end of the auxiliary hose 30 . The lower end of the support 31 is pivotally supported by a horizontal shaft 32 provided at the rear end of the power nozzle 22 so as to face in the left-right direction.
The shaft 32 is attached between an upper body 33 and a lower body 34 of the power nozzle 22, and the power nozzle 2 is attached to both ends of the shaft 32.
Moving rollers 35, 35 are provided on the outside of 2. 36 is a switch provided inside the power nozzle 22 close to the lower end of the support 31 in order to switch the rotation direction of the electric motor 28 that drives the rotating brush 27;
By connecting the motor 28 and the motor 28 in series, the rotation direction of the motor 28 can be switched. A hole 39 is formed at the lower end of the support 31, the upper end of which faces horizontally in the front and rear directions when the extension tube 23 is at an angle (approximately 45°) in normal use;
This hole 39 and the shaft 32 are fitted to support the support 31.
The extension tube 23 is pivotally supported, and is configured to cause relative movement with the shaft 32 by moving the extension tube 23 in the front-rear direction. The actuator 36a of the switch 36 is in contact with the front end surface of the lower end of the support 31, and is configured so that the switch 36 is switched by moving the lower end of the extension tube 23 back and forth. Specifically, by pushing the power nozzle 22 forward with the lower end of the extension tube 23, the rear end of the hole 39 comes into contact with the shaft 32, pushing the actuator 36a, and the rotating brush 27 rotates forward together with the electric motor 28. When the switch 36 is switched and the extension tube 23 is used to pull the power nozzle 22 backwards, the front end of the hole 39 comes into contact with the shaft 32, operating the actuator 36a and starting the electric motor. The switch 36 is switched so that the rotating brush 27 rotates backward together with the rotating brush 28.

In FIGS. 1 and 2, reference numeral 40 denotes a bumper made of a soft material that is sandwiched between the upper body 33 and the lower body 34 to prevent furniture from being scratched. Further, in FIG. 4, 41 and 42 are an electric blower and a power switch provided inside the vacuum cleaner body 21,
43 is a power plug.

To explain the operation in the above configuration, for example, when cleaning a carpet, the dust attached to the carpet is swept up into the suction chamber 26 of the power nozzle 22 by the rotation of the rotating brush 27, and the dust is stored in the vacuum cleaner main body 21. The suction force of the electric blower 41 collects the dust in the dust collecting section inside the cleaner body 21 via the extension pipe 23 and the hose 24 . During this cleaning, the power nozzle 2 is
When the motor 2 is moved forward, the switch 36 is turned on to rotate the electric motor 28 in the forward direction, as described above, and the rotary brush 27 is rotated in the forward direction. As a result, the power nozzle 22 moves forward by itself due to the rotational force of the rotating brush 27 while throwing up dust attached to the carpet. Further, when the power nozzle 22 is pulled rearward through the extension tube 23, the switch 36 is switched to rotate the electric motor 28 in the rearward direction as described above, and the rotating brush 27 is rotated in the rearward direction. This causes the power nozzle 22 to self-propel backward. In this way, the rotational force of the rotating brush 27 acts in the moving direction of the power nozzle 22, and the power nozzle 2
2 operating force can be reduced. Further, since the switching section of the switch 36 is provided inside the power nozzle 22, the power nozzle 22
from the extension tube 23, and connect the spacer nozzle, shelf nozzle, etc. to the tip or hand portion 44 of the extension tube 23.
When cleaning small areas such as spaces and shelves, the nozzle does not shake and allows efficient cleaning.

By the way, as another example, the hole 3 shown in FIG.
9 is made into a downward isosceles triangle, and the switch 36 is in the neutral state when the shaft 32 is located at the apex of the lower end, so that when the power nozzle 22 is lifted up with the extension tube 23, the shaft 32 is located at the lower end of the hole 39 due to the weight of the power nozzle 22, and the rotation of the brush 27 is stopped, thereby reducing noise.

Effects of the Invention As described above, according to the present invention, a switch for switching the rotation direction of the rotating brush is built into the suction tool,
The switch can be operated by pushing the extension tube in the direction in which the suction tool advances or pulling it in the direction in which the suction tool retreats, thereby controlling the direction of rotation of the rotary brush. In addition, when cleaning small areas by attaching a nozzle or shelf nozzle to the tip or hand part of the extension tube, there is no switch part on the hand part, so the hand part will not wobble back and forth and clean the small details. Cleaning can be done efficiently.

[Brief explanation of drawings]

1 to 4 show one embodiment of the present invention, in which FIG. 1 is an external perspective view of a vacuum cleaner with a rotating brush, FIG. 2 is a vertical sectional view of the power nozzle part, and FIG.
The figure is a plan view of the power nozzle with the upper body removed, Figure 4 is an electric circuit diagram, Figure 5 is an external perspective view of a conventional vacuum cleaner with rotating brushes, Figure 6 is a longitudinal sectional view of the same, and FIG. 7 is an exploded perspective view of the handle grip attachment portion. 21...Vacuum cleaner body, 22...Power nozzle,
23... Extension pipe, 24... Hose, 26... Suction chamber, 27... Rotating brush, 28... Electric motor, 31
...Support, 32...Shaft, 36...Switch, 3
6a... Actuator, 39... Hole, 41...
...Electric blower.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body having a built-in electric blower and a dust collecting section, and a suction device having a built-in rotary brush which is rotated in forward and reverse directions by an electric motor are connected through a hose and an extension pipe, and the suction A linkage means is provided between the tool and the extension tube to allow these relative movements within a predetermined range, and a switch is provided that operates to switch the rotational direction of the electric motor to match the moving direction of the suction tool by this relative movement. The vacuum cleaner is arranged inside a suction tool, and the linking means includes a shaft and a shaft support, and the shaft is rotatable relative to the shaft support and movable in the front and back direction. 2. The vacuum cleaner according to claim 1, wherein the pivot support is formed by a downward isosceles triangular hole.