JPH0788062A - Rotor for vacuum cleaner suction nozzle - Google Patents

Abstract

PURPOSE:To provide a compact and rigid rotor which prevent thread dusts from being caught by forming a fin blade around the sleeve and by covering the rotor with the sleeve to integrate them. CONSTITUTION:When a rotor 2 is covered with a sleeve 16, a blade 4 is formed on the circumference of the rotor 2 so that the blade forms a fin radially projected from the rotor along the axial direction of the rotary axis 8 of the rotor 2. The sleeve 16 and blade 4 are formed as one part which is produced from a flexible material such as soft PVC, rubber, etc. As the rotor 2 is produced from a general material with high strength by extrusion molding, the rotor becomes light and vibration is reduced. As the blade 4 and sleeve 16 are integrated, the rotor 2 can be made thin, and the projection height of the blade 4 is larger, resulting that the flexibility of the blade is improved and the blade rotates smoothly. Additionally, as brushes can be implanted close to the blade, thread dusts, etc., are never caught by the brush and blade by their interaction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction nozzle used as an attachment for a vacuum cleaner. In particular, the present invention relates to a structure in which a belt-shaped blade is attached to a rotor which constitutes a rotary rotor which is built in the rotor and is rotated.

[0002]

2. Description of the Related Art An example of a conventional rotary rotor is shown in FIG. An example of a suction nozzle for a vacuum cleaner equipped with this rotary rotor is shown in FIGS. 1 and 2. Hereinafter, description will be given with reference to the drawings. A rotary rotor 1 shown in FIG. 10 has a rod-shaped rotor 2 provided with a groove 3 on its outer peripheral surface over its entire length, into which a fixed end 5 of a strip-shaped blade 4 which is a separate component is fitted, and an opposing open end 6 is formed. It is attached to the outside of 2 by protruding radially in a fin shape. Attached to both ends 7 of the rotor 2 are integral rings 9 and 10 for attaching a rotary shaft 8 for rotating the same. The rotating shaft 8 which extends from the rings 9 and 10 to the opposite side to the side where the rotating shaft 8 is combined with the rotor 2 is a bearing 11
It is engaged with the oil-impregnated bearing 12 held by and is rotatable. The ring 10 is provided with a gear 13 for suspending a belt 14 on a drive device which will be described later and is driven and rotated. 1 and 2, the rotary rotor 1 is configured such that the open end 6 of the blade 4 faces the suction opening 22 that opens to the bottom 31 of the front portion 30 of the lower case 21 of the cleaner suction nozzle 20 shown in FIGS. 1 and 2. Are fitted and held by the bearing supports 23 on both sides of the lower case 21. The drive device (not shown) is built in a rear portion 26 formed by a partition 24 provided in the lower case 21 and an upper case 25 that covers the lower case 21 at the rear portion. This drive device drives and rotates the rotary rotor 1 via the belt 14. The lower case 21 to which the rotary rotor 1 is attached has the front portion 30 which is detachably covered with a front case 27. When the rotary rotor 1 rotates therein, the open end 6 of the blade 4 is at the suction opening 22. It comes into contact with the floor and rubs against it to remove dust adhering to it and jump up. The suction nozzle 20 has a suction opening 28 at the center of the partition 24 of the lower case 21, and an upper case 25 at the rear portion 26.
A pipe 29 is attached between the lower case 21 and the lower case 21 and is connected to a cleaner body (not shown) via an extension pipe or a flexible hose (both not shown). When the cleaner operates, the air on the floor is sucked from the suction opening 22 of the suction nozzle 20, and is sucked into the cleaner through the suction opening 28 and the pipe 29. At this time, the dust jumped up by the blade 4 is sucked together with the air. The blade 4 attached to the rotating rotor 1 having the above-described function is spirally wound around the outer periphery of the rotor 2 so as to rotate smoothly when it comes into contact with the floor and rubs against it. When the rotating rotor 1 rotates, the open end 6 of the blade 4 is always in contact with the floor so that the blade does not intermittently contact with the floor, so that stable rotation is achieved. For this reason,
Since the concave groove 3 of the rotor 2 also has to be formed in a spiral shape, it is formed by, for example, the manufacturing method disclosed in Japanese Patent Publication No. 12567/1990, which is suitable for this manufacturing method. It is a foamed thermoplastic resin as shown in Japanese Laid-Open Patent Publication No. 52-46671, and is made of this.

[0003]

The problems of forming the rotor 2 from the foamed thermoplastic resin are its weak strength and its manufacturing method being considerably difficult. In order to increase the strength, it is necessary to make the rotor 2 thick. For this reason, the structure of the suction nozzle 20 becomes large and the operability deteriorates, and the cost also increases. In the present invention, the material of the rotor 2 is not special,
It should be possible to use strong ones and do not need to use special manufacturing equipment or technology. As a result, the outer diameter of the rotor can be reduced, the dimensional accuracy can be improved, and the productivity can be improved. Rotor 2
Shall be able to be made hollow like a pipe to make it lighter. The blade 4 is attached to the rotor 2 without providing the groove 3 in the rotor 2. Further, the conventional example shown above is a rotary rotor in which an elastic strip-shaped blade is attached to the rotor. This is, for example, disclosed in Japanese Patent Publication No. 63-35246, in which the rotary rotor during cleaning is threaded. It prevents dirt, cotton dust, etc. from getting entangled. Regarding the action of rubbing the floor surface and removing and adhering the dust adhering to it, hitherto, a hair material is planted on the rotor. A rotor such as that shown in No. 58-175530 is superior. Therefore, since the rotating rotor 1 of the present invention rotates and the blade 4 rubs against the floor surface to separate and jump up dust on the floor surface, the brush is additionally provided so as to be more effective. To do so.

[0004]

As a material for forming the rotor 2, a generally used and strong material is used. The manufacturing method for manufacturing the rotor 2 is a method with high productivity and high accuracy. Therefore, the rotor 2 is made of hard PV.
C (abbreviation of plastics material of JIS K 6900, the same applies below), ABS, PS, PP, PE, etc. are used for extrusion molding, and steel pipes, aluminum pipes, etc. are also used. Further, the blade 4 has a sleeve-like structure that covers the outer periphery of the rotor 2 and a fin-like structure that is integrally formed with the sleeve and that projects radially outward. The material is formed by molding using a split mold or extrusion molding using elastic plastics or rubber. A brush is also provided by bristling the rotor 2 through the sleeve that covers the outer circumference of the rotor 2. In particular, the brush is provided close to and parallel to the blade 4. In this case, the tip of the brush is the open end 6 of the blade 4.
It is arranged so that the tip end of the brush comes in contact with and rubs against the floor surface so that the open end 6 of the blade 4 does not come into strong contact with the floor surface.

[0005]

The rotor according to the present invention is manufactured in a normal manner, not in a special manufacturing facility, in a usual manner and using a generally used material having high strength. It can have strength. Also, since it is not difficult to make, it is possible to make highly accurate products. In particular, since it can be made into a pipe shape by extrusion molding, it can be made lightweight, which reduces vibration when rotating and requires less driving power. Steel pipes and aluminum pipes have the same advantages as above. Since the blade is integrally formed with the sleeve that is laminated on the outer circumference of the rotor and is covered with the rotor, the thickness of the rotor provided with the sleeve can be made smaller than that when the blade is fitted to the rotor, so that the protruding dimension of the blade becomes relatively large. Therefore, when the blade rotates and the open end comes into contact with the floor surface, the flexibility of the blade is improved, the impulse is softened, and the rotation is smooth. Also from this point, the power of the drive unit can be reduced. Since the rotating rotor according to the present invention rotates smoothly and the driving device can be made small, the structure of the entire suction nozzle becomes small, and the operability is improved because it is lightweight. Also, the cost can be reduced. Furthermore, in order to make the effect of the rotor rotating and rubbing the floor surface by the blades to jump up the dust adhering to the floor more effectively, hair is planted on the rotor through the sleeve covering the outer circumference of the rotor. Also, a brush is provided. At this time, since the rotor according to the present invention can be made of a material having high strength, the hair material that has been flocked can be reliably held and the life can be extended. Further, it is easy to provide the brush in close proximity to the blade. This is because, in the conventional example, the structure of the portion holding the blade is large, and it was necessary to avoid this portion when flocking, but in the rotating rotor of the present invention, it is not necessary and the flocking is performed in the vicinity of the blade. Therefore, the blade and the brush act synergistically with each other to completely prevent the cleaning and the thread dust from being entangled in the brush.

[0006]

Embodiments of the present invention will be described with reference to the drawings. 1 and 2 are perspective views showing an example of a suction nozzle 20 to which the rotary rotor 1 according to the present invention is mounted. The suction nozzle 20 is the same as the conventional one and its configuration is as described above. Hereinafter, the rotating rotor 1 according to the present invention will be described. FIG. 3 is an exploded perspective view in which the respective parts are arranged in the order of assembly. The rotor 2 is made of PVC, AB, which is a pipe-shaped thermoplastic hard plastic.
It is made by extrusion molding with S, PS, PP, PE and the like. The outer periphery is selected according to its structure, such as being smooth or provided with streaks or groove-like irregularities in the extrusion direction. The inner surface is provided with ribs 15 in the extrusion molding direction.
Next, the pipe-shaped rotor 2 is inserted into a split mold and laminated to cover the outer periphery thereof to form a sleeve 16, or when the rotor 2 is produced, the sleeve 16 is double-formed and the rotor 2 is sleeved. Coat 16. At this time, the plate 4 is provided on the rotor 2 in the shape of a fin protruding radially from the rotor 2 while being spirally wound around the outer periphery of the rotor 2 in the direction of the axis of the rotary shaft 8. Sleeve 16
The blade 4 is made of elastic soft PVC or rubber. At both ends 18 of the rotor 2, the hollow 19
The bosses 32 of the herrings 9 and 10 are fitted together and fixed to each other with an adhesive or the like. At this time, a groove 33 is provided on the boss 32 and is fitted with the rib 15 on the inner surface of the rotor 2 to prevent rotation. Each of the rings 9 and 10 is made of plastics, and the rotary shaft 8 is inserted and integrally formed at the time of molding. I have to. FIG. 4 is a front view of the assembled rotary rotor 1 shown in FIG. 3, and a part thereof is shown as a vertical sectional view. The rotary shaft 8 and the rings 9 and 10 are integrated, and the boss 3
2 and the hollow 19 of the rotor 2 are fitted together and assembled,
The rotating shaft 8 and the oil-impregnated bearing 12 are fitted and supported, and further, the rotor 2 and the outer periphery thereof are laminated to form the sleeve 1
6 shows a structure in which 6 and the blade 4 are attached.
In FIG. 5, a tubular sleeve 16 is formed separately from the rotor 2 and a blade 4 is formed on the outer periphery of the tubular sleeve 16 in a spiral shape along the longitudinal direction and is formed into a body, and these are fitted together. The tubular sleeve 16 is provided with a hollow portion 35 for fitting with the rotor 2. Figure 6
A groove 36 is provided on the outer circumference of the rotor 2 in the axial direction (extrusion direction). The groove 36 is fitted to the inner surface of the sleeve 16 formed by split die molding to prevent rotation. 5 and 6 each show a state in which the sleeve 16 and the blade 4 are attached to a part of the rotor 2. 7 is a perspective view showing another rotary rotor 1 in which a brush 37 is provided on the rotary rotor 1 according to the present invention shown in FIG. 3, and FIG. 8 is a longitudinal sectional view taken along the line CC in FIG. 9 makes the blade 4 in FIG. 8 different. The rotary rotor 1 shown in FIG. 7 is provided with a brush 37 by bristling hair on the rotor 2 through the sleeve 16 covering the outer periphery of the rotor 2 in FIG. 3, and in FIGS. 7, 8 and 9, the brush 37 is provided. Are provided adjacent to and in parallel with the blade 4. The tip 38 of the brush 37 projects further outward than the open end 6 of the blade 4. The rotary rotor 1 rotates, and the tip 38 comes into contact with the floor surface and rubs against it. The open end 6 of the blade 4 may not contact the floor surface. The relationship between the brush 37 and the blade 4 is such that the brush 37 separates and jumps up dust on the floor, while the blade 4 prevents the thread dust or the like from getting caught in the brush 37. Therefore, the brush 37 is provided as close to the blade 4 as possible.

[0007]

The rotary rotor of the suction nozzle for a vacuum cleaner according to the present invention is formed by extruding a hard plastic which can be selected according to the required strength and precision, and a sleeve made of elastic plastic or rubber on the outer circumference of the rotor. Since it is covered with a blade and the blade is integrally formed with the blade so as to project like a fin, it has the following excellent effects as compared with the conventional rotary rotor. (1) The rotor has low molding cost and stable dimensional accuracy. (2) The material of the rotor can be selected according to the required strength and dimensional accuracy. Especially, the outer diameter is small and the weight can be reduced. Therefore, the weight balance of the rotor is improved, and vibration when rotating can be suppressed. (3) Since it is not necessary to provide a groove for fitting the blade to the rotor, the outer diameter of the rotor can be reduced even if the sleeve is covered. Therefore, the protruding height of the blade is relatively high, and the flexibility of the blade can be increased, so that the urge when the open end contacts the floor surface is softened,
Improves usability. Further, it is possible to increase the amount of contact between the open end and the floor surface, and at that time, the amount of deflection of the blade increases, and the action of highly repelling dust on the floor surface increases. (4) The power of the driving device can be reduced by the above (3). (5) The cost is reduced as a whole. (6) As a whole, the size and weight are reduced and the operability is improved. Further, a blade and a brush provided together are shown in FIG.
While the rotating rotor shown in Fig. 1 uses a blade to rub against the floor surface, the friction (hereinafter referred to as "brushing") action is performed because the brush tip reaches the inside of the nap of the rug to allow brushing. There is a remarkable cleaning effect when cleaning. Since the rotor according to the present invention can be made of a material having high strength, the bristle material that has been flocked can be reliably held, and the life of the brush can be extended. Moreover, in the case where the blade is inserted and held in the rotor as in the conventional example, the fitting portion between the rotor and the fixed end of the blade is large, and it is necessary to flock the bristle material to avoid it, so that Although it was necessary to separate the brush from the brush, in the present invention, since the brush can be provided close to the blade, there is an effect that it is possible to completely prevent the thread and cotton dust from being entangled in the brush. The rotating rotor according to the present invention thus constructed is excellent in the brushing effect and the effect of preventing lint from sticking to the brush, and has a structure in which a sleeve laminated on the rotor according to the present invention and a fin-shaped blade integrated with the sleeve are integrated. Combined with this, the manufacturing cost is low and it is easy to use.

[Brief description of drawings]

FIG. 1 is a perspective view of a suction nozzle for a vacuum cleaner according to the present invention and a conventional example.

FIG. 2 is a perspective view of FIG. 1 with a front case removed.

FIG. 3 is a perspective view of a rotating rotor according to the present invention.

FIG. 4 is a front view and a partial vertical cross-sectional view of the assembled rotary rotor in FIG.

FIG. 5 is a perspective view of a rotor and an integrated product of a sleeve and a blade when a rotor and an integrated product of a sleeve and a blade according to the present invention are separately prepared. FIG. Show.

FIG. 6 is a perspective view showing a structure of a rotor when a sleeve and a blade are integrally molded in a rotor according to the present invention by a split mold, and a state where a sleeve and a blade are integrally molded and laminated on a part of the rotor Indicates.

FIG. 7 is a perspective view of another rotating rotor according to the present invention, in which the rotating rotor shown in FIG. 3 is provided with bristles and brushes.

8 is a vertical cross-sectional view taken along the line CC in FIG.

9 is a vertical cross-sectional view of FIG. 8 showing another structure of the blade.

FIG. 10 is a perspective view showing an example of a conventional rotary rotor.

[Explanation of symbols]

 1 rotating rotor 2 rotor 4 blade 8 rotating shaft 16 sleeve 20 suction nozzle 37 brush

Claims (6)

[Claims] 1. A rotary rotor of a suction nozzle having a rotary rotor and a drive device for driving and rotating the rotary rotor, the rotary rotor comprising a rotor and a sleeve, and the sleeve has:
A vacuum cleaner characterized in that a fin-shaped blade is integrally provided on the outer periphery thereof so as to radially project outward with respect to the rotation axis of the rotating rotor, and the outer periphery of the rotor is integrally covered with a sleeve. Rotor of suction nozzle for car. 2. A rotor and a sleeve are separately formed,
The rotary rotor for a suction nozzle for a vacuum cleaner according to claim 1, wherein the rotor and the sleeve are fitted together. 3. The rotary rotor of a suction nozzle for a vacuum cleaner according to claim 1, wherein the rotor is inserted or the rotor is double-molded to form a sleeve and the outer circumference of the rotor is covered with the sleeve. 4. The rotary rotor for a suction nozzle for a vacuum cleaner according to claim 1, 2 or 3, wherein the rotor is in the shape of a hollow pipe. 5. The rotary rotor of a suction nozzle for a vacuum cleaner according to claim 1, 2 or 3, wherein bristles are planted on the rotor through a sleeve covering the outer periphery of the rotor to provide a brush. 6. The brush is provided by bristling a bristle material through the sleeve in parallel with a fin-shaped blade integrally provided with the sleeve covering the outer periphery of the rotor through the sleeve. A rotary rotor for a suction nozzle for a vacuum cleaner according to any one of 3 and 5.