JPH04272731A - Suction port for vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent the waste thread, etc., from going in between a rotating body and a brush cover, to eliminate a fault caused by entanglement of waste thread, etc., and to improve the durability, in the vacuum cleaner provided with a suction port having a rotary brush. CONSTITUTION:By providing a round hole 30 surrounded by the inclined surface 29 inclined conically in the center part of a brush cover 26 for preventing a hand from touching a rotating body 22 in which a brush 23 is planted in the outside periphery, refuse 28 such as waste thread, etc., entwined to the brush 25 comes to go out easily to the outside of the brush cover 26 from the round hole 30 by component force by torque of the rotating body 22 and the inclined surface 29 and it can be eliminated that the rotary part is clogged with refuse.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner equipped with a suction port having a rotating brush.

0002

2. Description of the Related Art A conventional vacuum cleaner suction port will be described below. As shown in FIGS. 6 to 10, 1 is a handle portion having a handle 2, and 3 is a power cord. Reference numeral 4 designates an upper cover above the dust collection unit lid 5, 6 a floor nozzle incorporating a rotating brush 7, 8 the dust collection unit main body, and 9 an electric blower in the floor nozzle 6, which communicates with a hose 10. Reference numeral 11 denotes an intake portion which communicates with the paper bag 12. 13 is a belt that transmits the rotation of the electric blower 9 to the rotating brush 7 of the floor nozzle 6. 14 is a back cover attached to the floor nozzle 6. 15 is a notch provided in the floor nozzle 6. 16
is a brush provided on the rotating brush 7, and the rotating shaft 17 is press-fitted into a bearing 19 of a bearing 18 and is rotatably attached to the floor nozzle 6. The end support 20 of the rotating brush 7 is attached to the rotating shaft 17 by a pin 21. A resin rotating body 22 having brushes 23 flocked on its outer periphery is fixed to the rotating shaft 17 with screws 24 at the end of the rotating brush 7. 25 is a rib formed on the floor nozzle 6, and a bearing 18 to which a rotating shaft 17 is attached is attached by means of the back cover 14. Reference numeral 26 denotes a brush cover made of sheet metal that prevents hands from touching the rotating body 22, and is attached to the rib 27 of the floor nozzle 6. 28 is hair and lint. arrow a
indicates the direction of air flow.

[0003] With the above configuration, the brush 23 can remove dust from corners that cannot be removed by the rotating brush 7.

0004

[Problems to be Solved by the Invention] However, in the above-mentioned conventional configuration, hair and lint get entangled with the brush and get between the side of the rotating body and the brush cover, causing the rotating body to stop due to rotational resistance, and furthermore, The problem was that the side surfaces became hot and melted. The present invention solves the above-mentioned conventional problems, and aims to provide a suction port for a vacuum cleaner that prevents failures due to entanglement of lint and the like and has good durability.

[0005]

[Means for Solving the Problem] In order to solve this problem, the vacuum cleaner suction port of the present invention has a brush cover having a round hole having a conical inclined surface in the center;
Alternatively, the brush cover is provided with a round hole in the center having a conical slope with a wavy convex surface.

[0006]

[Operation] With this configuration, hair and lint that get tangled around the brush will come out of the brush cover from the round hole due to the rotational force of the rotating body, and the lint and other debris will be removed into a wave-shaped shape due to the rotational force of the rotating body. It will hit the convex part and break.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 5 showing an embodiment of the present invention, parts that are the same as those in the conventional example are given the same numbers and explanations thereof will be omitted.

(Embodiment 1) As shown in FIGS. 1 and 2, a round hole 30 surrounded by a conically inclined inclined surface 29 is provided in the center of the brush cover 26 so that the axial center of the rotating body 22 is is placed on top.

As described above, according to this embodiment, hair and lint entangled around the brush are rotated by the brush cover having a round hole surrounded by a conical inclined surface in the center. The rotational force of the body and the component force of the inclined surface can make it easier to come out of the brush cover from the round hole, and can prevent failures such as the rotating body stopping or melting due to frictional heat.

(Embodiment 2) As shown in FIGS. 3 to 5, the difference from the structure of the first embodiment is a brush cover 26.
A round hole 32 surrounded by a conical inclined surface 31 with a corrugated convex surface is provided.

As described above, according to this embodiment, the brush cover is provided with a circular hole surrounded by a conical inclined surface with a corrugated convex surface in the center, so that the rotation of the rotating body is prevented. Since the rotational force causes the lint and other debris to hit the wave-shaped convex portion and break it, the lint and other debris can be shredded and the rotating part can be prevented from being clogged with debris.

0012

As is clear from the above description of the embodiments, the present invention has a brush cover with a round hole surrounded by a conical inclined surface in the center, or a brush cover with a corrugated surface. The structure includes a brush cover with a round hole surrounded by a convex conical slope, which prevents failures.
It is possible to realize an excellent suction port for a vacuum cleaner that can improve durability.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the concept of the main parts of a suction port for a vacuum cleaner according to a first embodiment of the present invention.

[Figure 2] Side view of the same brush cover

FIG. 3 is a side view of the brush cover of the vacuum cleaner suction port according to the second embodiment of the present invention.

[Fig. 4] Enlarged sectional view taken along line A-A' in Fig. 3

[Figure 5] BB' sectional view in Figure 3

[Figure 6] Perspective view of a conventional vacuum cleaner

[Figure 7] Side view showing the same partial cross section

[Figure 8] Bottom view of a conventional vacuum cleaner suction port

[Figure 9] Cross-sectional view showing the concept of the main parts of the vacuum cleaner suction port

[Figure 10] Side view of the same brush cover

[Explanation of symbols]

7 Rotating brush 22 Rotating body 23 Brush 26 Brush cover 29,31　　　　　　　　　　Slope 30, 32 Round hole

Claims (2)

[Claims] 1. A rotating body comprising a rotating brush and a rotating body with brushes flocked outward at both ends of the rotating brush, the brush having a round hole surrounded by a conical inclined surface in the center thereof. Vacuum cleaner suction port with brush cover. 2. The suction port for a vacuum cleaner according to claim 1, further comprising a brush cover having a round hole in the center surrounded by a conical inclined surface with a corrugated convex surface.