JP3162789B2 - Floor suction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor suction tool connected to a vacuum cleaner main body, and more particularly to an improvement of a rotary brush.

[0002]

2. Description of the Related Art Conventionally, a rotary brush for a floor suction tool is formed by extrusion molding as shown in Japanese Patent Publication No. 2-12567 (A47L 9/04) and Japanese Patent Publication No. 63-61014 (A47L 9/04). A brush-implanted portion is formed on the base, and a brush is implanted on the brush-implanted portion. However, this configuration has a disadvantage that the operation of implanting the brush is difficult, and the assembling workability is poor. Also, JP-A-2-82929 (A47L
As shown in 9/04), there is known a base in which a scrap made of a soft material is fixed to an extruded base. In this rotary brush, a scraping piece is mounted on a mounting portion formed on a base, but since the base of the scraping piece is inserted into the mounting portion from one end of the base, the workability of assembling is poor, and the rotating brush is rotated. When the brush is rotated at a high speed, the base of the scraping piece is deformed by the pressure applied to the scraping piece, the engagement between the base and the mounting portion is released, and the scraping piece may be peeled off.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has as its object to provide a floor suction tool having a highly reliable rotating brush which can be simplified in manufacture.

[0004]

According to the present invention, there is provided a suction tool main body having a suction port, a rotary brush provided facing the suction port, and a drive mechanism for rotating the rotary brush. The rotary brush comprises a shaft made of a rigid material and a soft material coating layer formed by insert molding around the shaft center and integrally formed with a scraping piece.

[0005] The present invention also provides a suction tool main body having a suction port formed therein, and a rotary brush provided facing the suction port.
A drive mechanism for driving the rotating brush to rotate, the rotating brush, an axial center of a non-circular cross section made of a rigid material,
A soft material covering layer formed by insert molding on the outer periphery of the shaft center and integrally forming a scraping piece.

[0006]

According to the first aspect of the present invention, since the scraping pieces are formed by forming the coating layer on the outer periphery of the shaft center, the manufacture of the rotating brush is simplified. Further, since the scraped pieces are formed integrally with the coating layer covering the axis, the scraped pieces do not peel off.

According to a second aspect of the present invention,
Since the scraping pieces are formed by forming the coating layer on the outer periphery of the shaft center, the manufacture of the rotating brush is simplified. In addition, since the scraped pieces are integrally formed with the coating layer that covers the axis having a non-circular cross section, peeling of the scraped pieces is reliably prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below in detail with reference to the drawings.

9 to 11, reference numeral 1 denotes a suction tool main body, which has a brush storage chamber 2 at the front. Reference numeral 3 denotes a suction port formed on the bottom surface of the brush storage chamber 2, and reference numeral 4 denotes a synthetic resin lid body that detachably covers the upper opening of the brush storage chamber 2, and sucks an engagement piece 5 formed in the front. The hook is locked to a locking portion 6 formed on the fitting main body 1, and a locking claw 8 of an elastic piece 7 formed on the rear portion is locked to an engaging portion 9 of the suction tool main body 1.

Reference numeral 10 denotes a connecting pipe which is supported at the substantially center of the rear of the suction device main body 1 so as to be vertically movable, 11 denotes an electric motor disposed in the space behind the suction device main body 1 in the right side of the drawing, and 12 denotes the suction device main body. 1 is a circuit board disposed in the left space in the figure in the figure, and the motor 11 is rotationally driven by the circuit board 12.

Reference numeral 13 denotes a rotating brush housed in the brush housing chamber 2. Both ends of the rotating brush are rotatably supported on the side wall of the brush housing chamber 2, and the motor is transmitted through a timing belt 14.
It rotates by 11 rotations.

Next, the rotary brush 13 will be described with reference to FIGS. 1 and 2. Reference numeral 15 denotes an axial center made of a rigid material such as polyamide resin or ABS resin containing glass fiber. It is formed in a substantially O-shape so that the thickness is relatively thin and substantially uniform, and the weight balance when the shaft 15 is rotated about the rotation center O is substantially equal. It is formed. Reference numeral 16 denotes a coating layer that covers the outer periphery of the shaft center 15 and is formed of a soft material such as urethane elastomer resin, rubber, or soft vinyl chloride, and is formed by insert molding on the shaft center 15. Here, the insert molding refers to a molding method in which a previously molded part or metal is mounted on a mold and embedded in a resin by molding.

Reference numeral 17 denotes a spiral strip formed integrally with the coating layer 16 and formed in a spiral shape. 18 is the axis 15
Of the timing belt 14
Pulley 19. Reference numeral 20 denotes a supporting portion mounted on the other end of the shaft center 15, 21 passes through the supporting portions 18 and 20, and
It is a shaft buried in.

Next, a method of manufacturing the rotary brush 13 will be described. First, the shaft 21 and the supporting portions 18 and 20 are integrally formed by insert molding, and these parts and the shaft 15 are integrally formed by insert molding. And the coating layer 16 is integrally formed on the component by insert molding.

Since the rotary brush 15 is formed by insert molding, it is easier to mold than extrusion molding and is excellent in mass productivity. Extrusion molding refers to a molding method in which a resin in a fluidized state is continuously extruded from a mold.

Next, the operation will be described. When the electric motor 11 is driven, the rotation of the electric motor 11 is transmitted to the rotating brush 13 via the timing belt 14, the rotating brush 13 rotates, and the scraping piece 17 is moved to a carpet or the like. Raise dust from the surface to be cleaned. At this time, the rotating brush 13 rotates at a high speed, but the scraping pieces 17 are insert-molded on the shaft 15 together with the coating layer 16, and the shaft 15 is formed in a substantially O-shaped cross section. Does not separate from the shaft center 15. Also, the rotating brush 13
Since the shaft center 15 is made of a rigid material, the shaft center 15 is not deformed by resistance or the like received from the surface to be cleaned.

In the above embodiment, the shaft center 15 is formed to have a substantially O-shaped cross section. However, as shown in FIGS. 3 to 6, a cross, a radial, an S-shape, or irregularities are formed on the outer periphery. It may be formed in a cylindrical shape. In short, it is only necessary that the shape be relatively thin and uniform so that there is no deformation due to sink marks or the like when formed by injection molding, and that the weight balance during rotation be good.

The rotary brush 13 may be manufactured by insert-molding a coating layer 16 on an axis 15 formed by injection molding, and thereafter fixing support portions 18 and 20 to both ends with an adhesive or the like. The shaft center 15 and the support portions 18 and 20 may be integrally formed by injection molding.

FIGS. 7 and 8 show a second embodiment of the present invention, wherein the shaft center 15 is formed by a metal pipe. This shaft center 13 is recessed at an appropriate number of places to balance the weight
22 are formed, and the cross-sectional shape is formed in a non-circular shape.

[0020]

As described above, according to the first aspect of the present invention, a scraping piece can be formed by forming a coating layer on the outer periphery of the shaft center, thereby simplifying the manufacture of the rotary brush. In addition, since the scraping pieces are integrally formed with the coating layer that covers the axis, the scraping pieces do not peel off, and the reliability can be improved.

Further, according to the configuration of claim 2 of the present invention,
By forming a coating layer on the outer periphery of the shaft center, a scraping piece can be formed, thereby simplifying the manufacturing of the rotating brush, and the scraping piece covers the shaft center having a non-circular cross section. Since it is integrally formed, the peeling of the scraped-up pieces can be reliably prevented, and effects such as improvement in reliability can be achieved.

[Brief description of the drawings]

FIG. 1 is a side view in which a part of a rotary brush according to a first embodiment of the present invention is broken.

FIG. 2 is a sectional view of the same.

FIG. 3 is a sectional view of another embodiment.

FIG. 4 is a sectional view of another embodiment.

FIG. 5 is a cross-sectional view of another embodiment.

FIG. 6 is a sectional view of another embodiment.

FIG. 7 is a longitudinal sectional view of a rotating brush according to a second embodiment of the present invention.

FIG. 8 is a transverse sectional view of the same.

FIG. 9 is a vertical sectional view of the floor suction tool.

FIG. 10 is a cross-sectional view of the floor suction tool.

FIG. 11 is a top view of the floor suction tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction tool main body 3 Suction port 11 Electric motor 13 Rotary brush 15 Shaft center 16 Coating layer 17 Raised piece

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yoshiyuki Ichida 2--18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Hiroshi Yamamoto 2--18 Keihanhondori, Moriguchi-shi, Osaka (56) References JP-A-1-265927 (JP, A) JP-A-62-19140 (JP, A) JP-A-5-285074 (JP, A) JP-A-4-295322 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47L 9/04

Claims (2)

(57) [Claims] 1. A suction tool main body having a suction port, a rotary brush disposed facing the suction port, and a drive mechanism for driving the rotary brush to rotate, the rotary brush being made of a rigid material. A floor suction tool comprising: a shaft center; and a soft material coating layer formed by insert molding around the shaft center and integrally forming a scraping piece. 2. A suction tool main body having a suction port, a rotary brush provided facing the suction port, and a drive mechanism for driving the rotary brush to rotate, the rotary brush being made of a rigid material. a non-circular cross section shape of the axis composed, Lee to the axis center periphery
A floor suction tool characterized by comprising a soft material coating layer formed by insert molding and integrally forming a scraping piece.