KR100438114B1 - Vacuum cleaner - Google Patents

Abstract

When power transmission to the rotary brush is interrupted, it is possible to reliably stop the rotary brush, and also provide an electric cleaner with a simple structure and inexpensive.

A suction main body having a cleaning main body, a suction inlet body connected to a lower part of the cleaning main body and opening to the lower surface, a rotating brush rotatably installed in the suction port, a driving source, and a power transmission system for transmitting power to the rotating brush from the driving source. And an interruption mechanism for switching the interruption of power transmission of the power transmission system, wherein the interruption mechanism contacts the outer circumferential surface of the rotary brush as the interruption mechanism interrupts power transmission of the power transmission system. An electric vacuum cleaner comprising a brake arm for stopping the rotating brush.

Description

Electric vacuum cleaner {VACUUM CLEANER}

The present invention relates to an electric vacuum cleaner. More specifically, an electric vacuum cleaner having a rotary brush that is forcibly rotated by the power of a motor, etc., which makes it possible to reliably stop the rotary brush when the power transmission to the rotary brush is interrupted, and the electric structure is simple and inexpensive. It is about a cleaner.

In a general upright electric vacuum cleaner, a suction port body moving along a bottom surface is connected to a lower portion of a cleaning main body having a blower and a dust collector, and a suction hole is drilled through the bottom of the suction port body.

A rotating brush is rotatably provided inside the suction port, and for example, by forcibly rotating the rotating brush by using a driving source such as a suction motor, the dust attached to the rug or the like is lifted up and sucked up.

However, in the conventional upright type vacuum cleaner with a rotating brush, even if the power from the motor is interrupted, the rotating brush rotates for a while due to inertia, so that there is a problem such as damaging the floor on which the board is attached.

For example, in the electric vacuum cleaner of a free pully system, when the rotation of the rotating brush is stopped, the power to the rotating brush is caused by sliding the power transmission belt from the driving pulley on the rotating brush side to the stopping free pulley. Blocking delivery. However, since there is a slight frictional force in the contact portion between the ball bearing of the free pulley and the shaft which continues to be idle, the rotating brush connected to the shaft continues to rotate little by little even after the interruption due to this frictional force and the aforementioned inertia. There was.

On the other hand, in order to stop the rotation of the rotary brush instantaneously, there is a conventional vacuum cleaner with a clutch, but there is a problem that not only the structure is complicated, but also the manufacturing cost.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and is an electric vacuum cleaner having a rotating brush which is forcibly rotated by the power of a motor, etc., and it is possible to reliably stop the rotating brush when the power transmission of the rotating brush is interrupted. It is an object of the present invention to provide an electric cleaner with a simple structure and low cost.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view in the stand state which shows one Embodiment of the vacuum cleaner of this invention.

FIG. 2 is a side view of the vacuum cleaner of FIG. 1. FIG.

Figure 3 is a bottom view of the inlet body of Figure 1;

4 is a partially cutaway front view of the rotating brush of FIG.

FIG. 5 is an explanatory view of a horizontal section of the suction inlet body when driving the rotating brush of FIG.

Fig. 6 is a longitudinal cross-sectional view of the inlet body when driving the rotary brush of Fig. 3;

FIG. 7 is an explanatory view of a horizontal section of the suction port main body at the time of stopping the rotating brush of FIG.

FIG. 8 is a longitudinal cross-sectional view of the inlet port body at the time of stopping the rotating brush of FIG.

9 is a longitudinal cross-sectional view showing the vicinity of a suction port of the rotary brush inside the suction port main body of FIG.

Fig. 10 is a longitudinal cross-sectional view showing a state where the back cover is removed in order to open the vicinity of the suction port of the rotary brush inside the suction port body.

FIG. 11 is an enlarged cross-sectional explanatory view showing the position of the slide lever when driving the rotary brush of FIG.

12 is an enlarged cross-sectional explanatory view showing the position of the slide lever at the time of stopping the rotating brush of FIG.

(Explanation of the sign)

1 inlet body

2 Cleaning Basics

3 grip

5 flexible hose

12 rotary brushes

15 brake arm

An electric vacuum cleaner of the present invention includes a suction main body having a cleaning main body, a suction inlet body connected to a lower part of the cleaning main body and opening to the bottom surface thereof, a rotary brush rotatably provided in the suction port, a driving source, and a rotating brush from the driving source. An electric vacuum cleaner having a power transmission system for transmitting power to the power transmission system, and an intermittent mechanism for switching the power transmission control of the power transmission system, wherein the control mechanism cuts power transmission of the power transmission system to the outer peripheral surface of the rotary brush. It is characterized by having a brake arm which contacts and stops this rotating brush.

The intermittent mechanism is provided for guiding the movement of the slide lever provided on the other end side of the front portion of the slide lever and the long slide lever having the action pin inserted through the rear end and the U-shaped belt guide formed on one end of the front end. It is preferably made of a guide means, the brake arm is preferably connected to the other end side of the slide lever.

It is preferable to have a cylinder connected to the slide lever to receive the brake arm so as to be slidable, and pressing means received at an inner end of the cylinder to push the brake arm in a direction in contact with the rotary brush.

Next, the electric cleaner of the present invention will be described in more detail with reference to the drawings. 1 is a front view of a stand state showing an embodiment of the vacuum cleaner of the present invention, FIG. 2 is a side view of the vacuum cleaner of FIG. 1, FIG. 3 is a bottom view of the inlet body of FIG. 1, FIG. 4 is FIG. Fig. 5 is a horizontal sectional explanatory view of the inlet port body when the rotary brush is driven in Fig. 3, Fig. 6 is a longitudinal cross-sectional explanatory view of the suction port body when the rotary brush is driven in Fig. 3, and Fig. 7 is Fig. 3 is a horizontal cross-sectional explanatory view of the suction inlet body when the rotating brush is stopped, and FIG. 8 is a longitudinal cross-sectional explanatory view of the suction inlet body when the rotating brush is stopped in FIG. 3, and FIG. Fig. 10 is a longitudinal sectional explanatory view showing a state in which the back cover is removed in order to open the vicinity of the intake port of the rotary brush inside the intake main body of Fig. 3, and Fig. 11 shows the position of the slide lever when the rotary brush driving in Fig. 3 is performed. Enlarged cross section Brightness, and Figure 12 is an enlarged cross-sectional illustration showing the position of the slide lever at the time of stopping the rotary brush of Fig.

The vacuum cleaner of the upright type shown in Figs. 1 to 2 includes a suction main body 1, a cleaning main body 2 supported on the upper side of the suction main body 1, a grip part 3, and a grip part. It consists of the front end side pipe (not shown) fixed to (3), the flexible hose 5, and the rotary tube 6. As shown in FIG. The distal end of the distal end pipe is inserted into the tubular distal end pipe support 10 of the cleaning base 2 so as to be detachably supported. In addition, the holding part 3 is connected to the dust collecting chamber (not shown) inside the dust collecting part 29 of the said cleaning main body 2 with the flexible hose 5 arrange | positioned at the back side of the holding part 3. It is. The holding part 3 consists of a hollow cylinder, and the handle is formed in the upper end. The front end pipe and the flexible hose 5 are connected via the holding part 3. Moreover, the holding part 3 is connected so that attachment or detachment is possible with respect to the said tip side pipe support part 10. As shown in FIG.

As shown in Figs. 3 to 8, the suction inlet body 1 of the present embodiment includes the front wheel 6 and the rear wheel 7 so as to be able to roll the bottom surface. The suction port body 1 includes an electric blower 11, a rotary brush 12, a power transmission system 13 for transmitting power from the electric blower 11 to the rotary brush 12, and a power transmission system 13. An intermittent mechanism 14 for intermittent power transmission and a brake arm 15 for suddenly stopping the rotating brush are provided.

As shown in the bottom view of Fig. 3, a suction port 8 is formed in the front of the suction port body 1, and a rotating brush 12 is provided in the suction port 8 so as to be rotatable. As shown in Fig. 4, the rotary brush 12 is fixed to the shaft 9 by screws 9a, and the shaft 9 is connected to both end walls of the inlet body 1 through the ball bearing 9b ( It is rotatably supported by 1a).

4 to 5, a power transmission system 13 for intermittently transferring power from the rotating shaft 16 of the electric blower 11 to the rotating brush 12 is disposed. The power transmission system 13 is called a belt re-locking method or a pre-pulley method, is disposed coaxially with the rotary brush 12, and is driven for the pulley 17 fixed to the shaft by a pin 9c, A stop pre-pulley 18 disposed coaxially with the rotary brush 12 adjacent to the driving pulley 17 and rotatable with respect to the rotary brush 12, and the rotary shaft 16 of the electric blower 11 on one side. ), It is provided with a transmission belt (19) which is rolled up on the other side, and is again hooked on the driving pulley (18). Since the pre-pulley 18 is supported on the shaft 9 through the ball bearing 9d, the rotation of the pre-pulley 18 is hardly transmitted to the shaft 9 and the rotating brush 12.

The intermittent mechanism 14 is provided in order for a user to wind up the transmission belt 19 of this power transmission system 13 arbitrarily. The intermittent mechanism 14 is provided with an operation pedal 21 supported on the rear portion of the suction port main body 1 which is rotatable about the center of the left and right shafts via the point pin 20.

The rear end of the slide lever 24 installed to move back and forth inside the suction port body 1 is connected to the operation pedal 21 through the link arm 22 and the action pin 23, and when the operation pedal 21 is stepped down, the slide is pushed down. The lever 24 moves forward (see Figs. 7 to 8), and when the operation pedal is raised, the slide lever 16 is moved backward.

In front of the slide lever 24, as shown in Figs. 11 to 12, driven members 27 for sliding the inside of the guide groove 26 formed in the guide plate 25 fixed to the inlet body 1 is installed. It is. The guide groove 26 is formed to be inclined forwardly at an angle in the guide plate 25, and when the slide lever 24 is moved backward to drive the rotary brush 12, as shown in FIG. When the body 27 moves deep inside the guide groove 26 and the front portion of the slide lever 24 is moved to the right, and the slide lever 24 is moved forward to stop the rotary brush 12, As shown in Fig. 12, the follower 27 is pulled out near the opening end of the guide groove 26 so that the front part of the slide lever 24 moves in the left direction.

5 to 8 and 11 to 12, at one end of the front end portion of the slide lever 24, a belt guide 28 is fitted to fit the upper rotational portion of the electric belt 19 from side to side. When the belt guide 28 is moving to the left side, the electric belt 19 is hooked to the pre-pulley 18, and when the belt guide 28 is turned from left to right, the belt guide 28 is pressed against the belt guide 28. The transmission belt 19 moves from left to right and walks back from the pre-pull 18 to the driving pulley 17. In addition, when the belt guide 28 is moving to the right, the belt belt 28 is connected to the driving belt pulley 17 when the belt guide 28 is turned from right to left. Pressed on, the transmission belt 19 moves from right to left to replace the pulley 17 from the drive pulley 18 with the pre-pull 18.

5-8, the brake arm 15 is connected to the other end side of the front part of the slide lever 24. As shown in FIG. In this embodiment, the slide lever arm part 24a protrudes from the side surface of the slide lever 24, and the slide lever arm part 24a is engaged with the notch 31a of the upper end of the connection member 31. As shown in FIG. . The cylinder 32 is fixed to the lower end of the connecting member 31, and the brake arm 15 is inserted into the cylinder 32. In addition, at the inner end of the cylinder 32, a compression coil spring 33 for pushing the brake arm 15 in the direction of contact with the smooth surface 12a of the outer circumferential surface of the rotary brush 12 is accommodated.

6 and 8, since the operation pedal 21 protrudes to the rear of the suction port main body 1, the user moves the vacuum cleaner while the user moves to the top of the grip portion 3, as shown in FIGS. While holding the handle, you can step on or lower the operation pedal.

As shown in Figs. 7 and 8, when the operation pedal 21 is pressed down, the slide lever 24 is advanced so that the electric belt 19 is replaced from the driving pulley 17 to the pre-pulley 18, and rotated. The drive of the brush 12 is off. On the other hand, as shown in Figs. 5 and 6, when the operation pedal 21 is raised, the slide lever 24 is retracted so that the electric belt 19 is replaced with the driving pulley 17 from the free pulley 18. The drive of the rotary brush 12 is turned on. That is, the simple operation of stepping down and raising the operation pedal 21 without stopping the movement of the cleaner allows the instantaneous on / off switching of the driving of the rotary brush 12. For example, when moving from the floor on which the carpet is laid to the floor on the floor or vice versa, the cleaning can be performed continuously by switching the driving of the rotary brush 12 on and off without stopping the cleaner. .

In addition, as shown in Figs. 5 to 8, when the rotary brush 12 is driven, the brake arm 15 is separated from the rotary brush 12, but as shown in Figs. When the brush 12 is stopped, the slide lever arm 24a moves forward of the connecting member 31, the cylinder 32, and the brake arm 15 by moving the slide lever 24 forward by depressing the operation pedal. The brake arm 15 can be brought into contact with the brake arm 15 by applying pressure to the smooth surface 12a of the rotary brush 12. Accordingly, since the power transmission of the rotary brush 12 is interrupted by stepping on the operation pedal 21 and the brake brush 15 can be momentarily stopped by the brake arm 15, the floor brush or the like may be damaged. none.

In addition, since the brake arm 15 is pressed against the rotary brush 12 via the compression coil spring 33, such an impact is alleviated on the brake arm 15.

In addition, in the present embodiment, as shown in Figs. 3 and 9 to 10, the rear face of the suction port body 1 covers the portion 34a and the power transmission system 13 covering the rotary brush 12. The back cover 34 which holds the part 34b is provided. Furthermore, the back cover 34 is provided near the suction port 35a of the rotary pipe 35 so that the vicinity of the suction port 35a of the rotary pipe 35, which is most likely to accumulate in the suction port body 1, is opened to the outside. An extending portion 34c which extends and covers is formed. Therefore, when the rear cover 34 is opened during maintenance or replacement of the rotary brush 12, the vicinity of the suction port 35a of the rotary pipe 35 is also easily exposed to the outside, so that it is accumulated inside the suction port body 1. Dust can be easily removed.

In addition, although the above-mentioned embodiment demonstrated the pre-pulley type vacuum cleaner as an example, this invention is not limited to this, The intermittent mechanism contact | connects the outer peripheral surface of a rotating brush as it interrupts the power transmission of a power transmission system. If there is a brake arm which suddenly stops the rotating brush, it can be employed in an electric vacuum cleaner equipped with various power trains and intermittent mechanisms.

According to the present invention, when the power transmission to the rotary brush which is forcibly rotated by the power of the motor is interrupted, the rotary brush can be stopped reliably, so that there is no fear of damaging the boarded floor or the like. Moreover, since it is not necessary to provide dedicated clutch mechanisms, such as an electromagnetic clutch, a structure is simple and inexpensive.

Claims (3)

A suction main body having a cleaning main body, a suction inlet body connected to a lower part of the cleaning main body and opening to the lower surface thereof, a rotating brush rotatably installed in the suction inlet, a drive source, and a power transmission system for transmitting power to the rotating brush from the driving source. An electric vacuum cleaner having an interruption mechanism for switching the interruption of power transmission of the power transmission system, And the brake arm has a brake arm which contacts the outer circumferential surface of the rotary brush to stop the rotary brush as the interruption mechanism interrupts power transmission of the power transmission system. 2. The slide mechanism according to claim 1, wherein the control mechanism includes an elongated slide lever having a working pin inserted into the rear end and a U-shaped belt guide formed at one end of the front end, and a slide provided at the other end of the front portion of the slide lever. It consists of a guide means for guiding the movement of the lever, And the brake arm is connected to the other end side of the slide lever. 3. A cylinder according to claim 2, comprising a cylinder connected to the slide lever to slidably receive the brake arm, and pressing means received at an inner end of the cylinder and pushing the brake arm in a direction in contact with the rotary brush. Electric cleaner, characterized in that.