JP3777618B2 - Floor nozzle for vacuum cleaner - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a floor nozzle for a vacuum cleaner having an agitator effective for cleaning a carpet or the like.
[0002]
[Prior art]
In recent years, floor nozzles for vacuum cleaners have become mainstream with agitators.
[0003]
A conventional floor nozzle for a vacuum cleaner will be described below with reference to FIGS. An agitator 2 and a drive source 3 are provided in a floor nozzle main body (hereinafter simply referred to as a main body) 1. The agitator 2 is driven by a drive source 3 via a belt 4. A wheel 5 for moving back and forth is provided on the bottom surface of the main body 1.
[0004]
With the above configuration, when the carpet surface is cleaned using a vacuum cleaner (not shown), the agitator 2 is rotated to perform efficient dust collection. At this time, when the user operates the main body 1 back and forth, the wheel 5 rotates to facilitate this movement.
[0005]
[Problems to be solved by the invention]
However, the above-described conventional configuration has a problem that it is difficult to scrape dust in the deep part of the carpet. That is, the bearing 7 that supports the shaft support portion 6 of the agitator 2 is fixed between the bearing support portion 8 provided in the main body 1 and the bearing pressing rod 10 provided on the agitator cover 9. The dust inside is collected only by scooping up by rotation of the agitator 2. Further, the agitator 2 may not reach the deep part of the carpet, or the dust may be pressed into the carpet by the rotation of the agitator 2.
[0006]
The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a floor nozzle for a vacuum cleaner having improved dust collection performance.
[0007]
[Means for Solving the Problems]
Floor nozzle for vacuum cleaner of the present invention in order to achieve the object, the agitator and the drive source for driving the agitator provided in the floor nozzle body, and the wheel for moving provided in the floor nozzle body bottom surface , a small cam than the outer diameter of the outer peripheral track said wheel is provided on the side wall of the wheel, and a bearing provided on energized to constantly floor direction to the shaft supporting portions at both ends of the agitator, the center of the wheel The shaft is arranged to be vertically below the central axis of the agitator, and the cam is provided below the bearing, and the bearing can be moved up and down by the cam interlocked with the rotation of the wheel .
[0008]
[Action]
In the above configuration, when the wheel rotates due to the movement of the main body, the cam interlocked with the wheel acts to move the agitator up and down. In other words, it dusts out the dust in the carpet while knocking the carpet.
[0009]
【Example】
An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a floor nozzle body (hereinafter simply referred to as a main body) 21 includes an upper nozzle body 22 and a lower nozzle body 23. Further, the main body 21 is formed with a suction chamber 25 having a lower opening in the front inside thereof as a suction port 24. The suction port 24 extends rearward of the main body 21 and continues to the suction passage 26. A suction joint 29 is rotatably provided behind the suction passage 26, and a joint pipe 30 connected to a dust collection pipe of a vacuum cleaner (not shown) is connected thereto.
[0010]
Further, as shown in FIG. 2, a motor 27 that is an agitator drive source for driving the agitator 31 and a control unit 28 that controls the motor 27 are provided inside the main body 21 located behind the suction port 24. Yes. The agitator 31 has a structure in which a rubber lip 33 is spirally provided on the outer periphery of the rotating rod 32, and is provided in the suction chamber 25 in parallel with the suction chamber 25. A belt 39 is stretched between a pulley 36 provided on one side of the agitator 31 and a pulley 38 provided on the shaft 37 of the motor 27. That is, the agitator 31 is forcibly driven by the motor 27. Reference numeral 34 denotes a bearing for the agitator 31 disposed on both side chamber walls of the suction chamber 25. As shown in FIG. 3, the bearing 34 supports a shaft support portion 35 that rotatably supports the agitator 31.
[0011]
As shown in FIG. 2, in this embodiment, since the tension of the belt 39 is applied to the shaft 37 of the motor 27 and the shaft 40 of the agitator 31, an auxiliary bearing 41 is provided at the end of the shaft 37 of the motor 27. ing. The auxiliary bearing 41 is supported by a pair of support ribs 42 and 43 formed integrally with the lower nozzle body 23. The bearing support portion 44 provided on the lower nozzle body 23 supports the agitator bearing 34 from the front and the rear and holds the bearing 34 so as to be slidable in the vertical direction. An agitator cover 45 is detachably disposed above the lower nozzle body 23.
[0012]
Reference numerals 46 and 47 denote wheels provided before and after the main body 21. Among these, the wheel 46 is provided on the side wall side of the main body 21 with respect to the bearing 34, and the central axis thereof is arranged to be vertically below the central axis of the agitator 31. Further, a cam 48 whose outer track is smaller than the outer diameter of the wheel 46 is provided below the bearing 34 on the opposite side wall side of the wheel 46. A restraining spring 49 is provided above the bearing 34 so as to restrain the bearing 34. The holding spring 49 is installed on the agitator cover 45 so as to be compressed when the bearing 34 is pushed up by the cam 48.
[0013]
The operation of this embodiment will be described below. First, when an electric vacuum cleaner main body (not shown) is operated, a suction force is applied from the suction joint 29 to the suction passage 26, the suction chamber 25, and the suction port 24 through the joint pipe 30. At the same time, the motor 27 starts driving, and the agitator 31 rotates by receiving the rotation of the motor 27 via the belt 39. When the user moves the main body 21 back and forth in this state, the wheel 46 rotates. When the wheel 46 rotates, the cam 48 rotates in conjunction with this rotation. In conjunction with the rotation of the cam 48, the bearing 34 moves upward along the bearing support portion 44 together with the agitator 31. When the wheel 46 further rotates and the upward force applied by the cam 48 to the agitator 31 disappears, the agitator 31 is pushed back downward by a holding spring 49 provided above the agitator 31.
[0014]
By repeating this vertical movement of the bearing 34, the agitator 31 performs a vertical movement in addition to a rotational movement, and scoops up the dust deep into the fur feet of the carpet while hitting the carpet. Thus, the dust in the carpet is sent from the suction port 24 to the main body of the vacuum cleaner (not shown) through the suction chamber 25, the suction passage 26, the suction joint 29, and the joint pipe 30.
[0015]
【The invention's effect】
The present invention as described above, a driving source for driving the agitator and the agitator is provided in the floor nozzle body, and the wheel for moving provided in the floor nozzle body bottom surface, the outer peripheral side wall side of the wheel includes a small cam than the outer diameter of the locus is the wheel, and a bearing provided on energized to constantly floor direction to the shaft supporting portions at both ends of the agitator, the central axis of the wheel is vertically below a central axis of the agitator And the cam is provided below the bearing, and the bearing can be moved up and down by the cam interlocked with the rotation of the wheel. since the beating effect of applied, it is those that can be an electrical vacuum cleaner floor nozzle with an improved dust collecting performance can scoop out the waste carpet deep.
[Brief description of the drawings]
FIG. 1 is a front view showing a section of a floor nozzle for a vacuum cleaner according to an embodiment of the present invention. FIG. 2 is a plan view showing a section of the floor nozzle. 2 is a sectional view taken along line XX in FIG. 2. FIG. 4 is a side sectional view showing the entire floor nozzle. FIG. 5 is a plan view showing a part of a conventional floor nozzle for a vacuum cleaner. ] Cross-sectional view taken along line KK in FIG.
21 Floor nozzle body 27 Motor 31 Agitator 34 Bearing 35 Shaft support 39 Belt (power transmission means)
41 Bearing support 46 Wheel 48 Cam 49 Retaining spring

Claims (1)

And the agitator and the drive source for driving the agitator provided in the floor nozzle body, and the wheel for moving provided in the floor nozzle body bottom surface, the trajectory of the peripheral side wall side of the wheel than the outer diameter of the wheel and small cam, and a bearing provided on energized to constantly floor direction to the shaft supporting portions at both ends of the agitator, the central axis of the wheel is arranged so as to be vertically below a central axis of the agitator, and The floor nozzle for a vacuum cleaner, wherein the cam is provided below the bearing, and the bearing can be moved up and down by the cam interlocked with the rotation of the wheel .

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