JPH07124085A - Rotary rotor of suction nozzle for vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve operability with a rotor made slender, smaller and lighter by putting a sleeve over the rotor under fitting a protruded ridge of the sleeve into a recessed groove of the rotor to integrally combine then. CONSTITUTION:A rotor 2 is formed in a rod and a recessed groove 15 for a protruded ridge is arranged spirally on the outer circumference thereof along the axial line of the rotation thereof. A hollow cylindrical sleeve made of an elastic material provided separately is provided with a blade 4 sticking out radially on the outer circumference in a longitudinal direction and a protruded ridge or a recessed groove to be fitted into the recessed groove 15, or the protruded ridge provided on the rotor 2 is provided on the internal wall thereof, respectively. When the sleeve 16 is put over the rotor 2 to laminate with the protruded ridges fitted into the mating recessed grooves 15 between the rotor 2 and the sleeve 16, a spiral blade 4 is mounted to make a rotary rotor 1. The recessed groove 15 and the protruded ridge are respectively not always deep and high, hence allowing the lessening of the size of the rotor 2, and a smaller outside dimension is also possible even by this method of putting the sleeve over the rotor. This structure enables reduction in the size and weight of a rotatable suction nozzle which houses the sleeve thereby achieving ease of handling and a reduction in driving force of a rotary rotor 1.

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, and will be described below with reference to the drawings. The rotary rotor 1 shown in FIG. 9 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 provided. 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 protruding from the rings 9 and 10 on the side opposite to the side where the rotating shaft 8 is engaged with the rotor 2 is fitted to the oil-impregnated bearing 12 held by the bearing 11 so as to be rotatable. ing.
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. Suction nozzle 20
The suction opening 2 at the center of the partition 24 of the lower case 21.
8 is provided, a pipe 29 is attached to the rear part 26 between the upper case 25 and the lower case 21, and this is attached to a cleaner body (not shown) via an extension pipe or a flexible hose (neither is shown). Connected to. 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 conventional example shown above is the suction nozzle 20 including the rotating rotor 1 in which the elastic strip-shaped blade 4 is attached to the rotor 2. However, this blade 4 is, of course, Japanese Patent Publication No. 63-352.
As shown in No. 46, it is for preventing lint, cotton dust, etc. from getting caught in the rotating rotor 1 during cleaning. Regarding the action of rubbing the floor surface and removing dust adhering to it, , Flocking hair material on rotor
The rotor shown in No. 75530 is superior.

[0003]

In the above-mentioned conventional example, since a large concave groove is required to insert and fix the fixed end of the blade separately provided in the concave groove provided in the rotor, the strength of the rotor becomes weak and It is necessary to thicken the rotor for reinforcement. Therefore, even if the blade fixed to this rotor is made of an elastic material, if the blade does not have the required outwardly protruding dimension in a radial direction, the impulse becomes large when the blade comes into contact with the floor and friction or vibration is generated. It is easy to occur. Therefore, if the required amount of protrusion of the blade is maintained, the size of the rotary rotor in the direction of the radius of rotation increases, and the size of the suction nozzle also increases. Further, if the rotor becomes large, vibration will increase if the rotational balance is not good, so the dimensional accuracy of the rotating rotor must be improved. The present invention reduces the thickness of the rotor. Therefore, when mounting the blade on the rotor, a large groove is provided on the rotor to stop mounting the blade, and a small groove or protrusion is provided on the rotor to mount the blade. In addition, it is not enough to rub the floor of the rotating rotor with the blade to remove dust adhering to it, but if you replace it with a brush, thread dust or cotton dust will become entangled. Allow it to be used together. The brush is installed close to and parallel to the blade in order to prevent the tip of the brush from rubbing the floor surface when the rotary brush rotates and to prevent the thread dust and the cotton dust from being caught in the rotary brush. The tip of the brush is projected more than the amount of projection of the blade.

[0004]

Means for Solving the Problems A groove or protrusion is provided on the outer circumference of a rotor in a spiral shape along the axis of rotation of the rotor. Separately, a hollow tube-shaped sleeve is made of elastic blastix or rubber, and the hollow inner wall is provided with a ridge or groove that fits in the groove or ridge of the rotor in the longitudinal direction, and in the outer periphery in the longitudinal direction. A blade is provided that projects radially outward in the shape of a fin. The rotor is covered with the sleeve while the protrusion of the sleeve and the groove of the rotor are fitted to each other so that the rotor and the rotor are integrated. Of course, when the groove is formed in the rotor instead of the groove, the sleeve is formed in the groove. The sleeve is made of a suitable material because the blade requires elasticity, but it is also considered to be easy to cover the blade with the rotor described above. In order to fit the sleeve to the rotor, it is easier to fit the ridges of the inner wall of the sleeve in a spiral shape so as to fit into the concave groove provided in the rotor, but the blade is made into a spiral shape, so the manufacturing is a little complicated. ,
There is also the following method to replace this. It is easier and cheaper to make the blade or protrusion provided on the sleeve straight in the longitudinal direction of the sleeve. The sleeve is put on the rotor while fitting the groove of the rotor and the protrusion of the sleeve. At this time, the protrusion of the sleeve follows the spiral concave groove of the rotor, and the sleeve is twisted on the rotor to cover it. A brush is provided by bristling the bristle material in close proximity to the blades of the rotating rotor thus combined. At this time, the tip of the brush is projected outward from the open end of the blade. In addition, when the rotor and the sleeve are fitted to each other, the recessed grooves and the protrusions that determine the positions thereof may not be particularly deep recessed grooves or high protrusions. If necessary, the number of recessed grooves or protrusions may be changed. Ensure positioning by doing more.

[0005]

The rotor according to the present invention is rod-shaped, and is provided with a spiral groove or protrusion on its outer periphery along its axis of rotation. Separately, a hollow cylindrical sleeve made of an elastic material has blades protruding radially on its outer circumference in the longitudinal direction, and a ridge or a recess fitted on the inner wall to a concave groove or a ridge provided on the rotor. Each groove is provided. When the rotor and the sleeve are fitted with the concave grooves and the protrusions, and the rotor is covered with the sleeve and laminated, a spiral blade is attached to form a rotary rotor. The above-mentioned concave groove or protrusion does not need to be a deep concave groove or a high convex groove, and does not require a large concave groove required for attaching a blade to the rotor in the conventional example, so that the rotor is not required. Can be made thinner. Even if the blade is covered with the required blade height (projection amount), the outer dimensions are reduced. The suction nozzle that stores and rotates this,
Compact and lightweight. It is easy to use, and the driving power of the rotating rotor is small, so the cost can be reduced. The brush is installed by brushing the bristle material to the rotor through the sleeve in close proximity to the blade, so it has an excellent dust detachment and jumping action, allowing for good cleaning, and preventing the thread and cotton dust from being caught by the blade. The actions that are performed synergistically can completely solve the conventional problems.

[0006]

Embodiments of the present invention will be described with reference to the drawings. 1 and 2 are perspective views showing an example of an intake nozzle 20 to which the rotary rotor 1 according to the present invention is attached, which 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 a rod-shaped molded product made of brass, and is shown in a perspective view in FIG. The rotor 2 is provided with a concave groove 15 on the outer periphery in a spiral shape along the longitudinal direction. Separately, FIG. 5 shows the sleeve 16 in a perspective view. The sleeve 16 is formed in a hollow tube shape, and a protrusion 36 is provided in the longitudinal direction on the inner wall forming the hollow portion 35. The protrusion 36 fits into the groove 15 provided in the rotor 2 and has the same structure and size. However, depending on the structure and material of the sleeve 16, if the protrusion 16 is the same as the groove 15, it may be formed into a spiral shape or a straight shape.
The sleeve 16 is attached to the rotor 2 while fitting the ridge 36 of 6
When the cover is covered with the ridges 36, the ridges 36 fit into the concave grooves 15 so that the blades 4 and the sleeve 16 are fixed in a spiral shape, so that the ridges 36 can be made straight, and this is easier to make. . Further, the sleeve 16 is integrally formed with a fin-shaped blade 4 protruding radially on the outer periphery thereof, and the blade 4 is made of elastic flexible plastics or rubber made of a material suitable for this. . Therefore, the sleeve 16 is also made of the same material. Since the protrusions 36 provided on the sleeve 16 and the blades 4 straightened along the longitudinal direction of the sleeve are covered with the rotor 2 and the sleeve 16 is twisted in a spiral shape following the concave groove 15 of the rotor 2, the sleeve 16 is combined. For example, the sleeve 16 is made thin, or a material is selected, and the sleeve 16 is heated to make it flexible. The rotating rotor 1 is provided by extending a rotor 2 having both ends 32 fitted to a sleeve 16, and fitting both ends 32 and the rings 9 and 10 in order to attach the rotor 2 to the rotating shaft 8 and fixing them by adhesion or the like. Combine. Rings 9 and 10
Is formed by molding with a blastix, and the shaft 8 is integrally formed by inserting at the time of molding, and the shaft 8 is provided on the opposite side to the side where the both ends 32 are fitted together, and the shaft 8 is held by the bearing 11. The oil-impregnated bearing 12 is fitted and rotatably supported. The rings 9 and 10 have the above-mentioned ends 32.
Each of the holes 33 that fits in each other is provided with a rib 34 projecting from the inner wall thereof, and the ribs 34 are engaged with the concave grooves 15 of the rotor 2 at both ends 32 to prevent rotation. The ring 10 is provided with a gear 13 and suspends a belt 14 to drive and rotate the rotating rotor 1 by a driving device. 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 both ends 32 and the holes 33 of the rings 9 and 10 are fitted together to be assembled to support the rotary shaft 8 and the oil-impregnated bearing 12 by fitting. Further, the structure is shown in which the slave 16 and the blade 4 are attached to the rotor 2 and the outer periphery thereof in a laminated manner. 6 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 vertical sectional view taken along line A, and FIG. 8 shows the blade 4 in FIG. 7 having a U-shaped cross section. The rotary rotor 1 shown in FIG. 6 has a brush 37 provided by bristling hair material on the rotor 2 through a sleeve 16 covering the outer periphery of the rotor 2 in FIG. 3 or 5, and in FIG. 6, FIG. 7 and FIG. The brush 37 is provided in close proximity to 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. Open end 6 of blade 4
Need 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 a sleeve made of elastic plastics or rubber on the outer periphery of the rotor made by molding a hard plastic which can be selected according to the required strength and precision. Since the blades are provided so as to cover and are integrally formed with the blades so as to project like fins, the following excellent effects are obtained as compared with the conventional rotary rotor. (1) The rotor may be thin because the blade does not have a large groove. (2) Since the rotor is thin and may have a simple circular shape without forming a complicated cross-sectional shape, it can be easily manufactured and the dimensional accuracy can be improved. Therefore, since the weight can be reduced, the weight balance of the rotor is improved and the vibration when rotating can be reduced. (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 separating and jumping dust on the floor surface increases. (4) The power of the drive 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.
The rotating rotor shown in Fig. 1 uses a brush to rub against the floor surface, and the brush (hereinafter referred to as "brushing") action allows the tip of the brush to enter between the piles of the carpet. It has a remarkable effect when cleaning. Further, 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 the bristle and the brush need to be brushed to avoid it. However, in the present invention, since the brush can be provided close to the blade, the effect of completely preventing the thread dust and the cotton dust from being entangled in the brush can be obtained. The rotating rotor according to the present invention thus constituted is excellent in the brushing effect and the effect of preventing lint and the like from accumulating on 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 therewith 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 showing a rotor and an integrated product of a sleeve and a blade according to the present invention.

6 is a perspective view of another rotating rotor according to the present invention shown in FIG. 3, in which bristles are provided by bristling.

FIG. 7 is a vertical sectional view taken along the line AA in FIG.

8 shows a U-shaped cross-section of the blade in the vertical cross-sectional view of FIG.

FIG. 9 is a perspective view showing an example of a conventional rotary rotor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rotating rotor 2 rotor 4 blade 8 rotating shaft 16 sleeve 20 suction nozzle 37 brush 15 concave groove 36 projecting

Claims (3)

[Claims] 1. A rotary rotor of a suction nozzle having a built-in rotary rotor and a drive device for driving and rotating the rotary rotor, and a rotor and a sleeve constituting the rotary rotor. (1) When the rotor is rod-shaped and rotates around its outer circumference, A concave groove or protrusion is provided in a spiral shape along the axis of rotation of. (2) The sleeve has a hollow tube shape, and the inner wall of the hollow is provided with a protrusion or a concave groove in the longitudinal direction thereof so as to fit into the groove or the protrusion provided on the rotor, and is spirally wound in the longitudinal direction on the outer periphery. A fin-shaped blade projecting outward in the shape of a fan is formed. The rotor and the sleeve are covered with the respective grooves while the rotor and the sleeve are fitted to each other, and the rotor is covered with the sleeve and laminated to be integrated with each other. Rotating rotor. 2. The rotary rotor for a suction nozzle for a vacuum cleaner according to claim 1, wherein the sleeve is provided with a protrusion or a concave groove of a hollow inner wall and a blade provided on an outer periphery of the sleeve in a straight line in a longitudinal direction of the sleeve. 3. A brush provided by bristling hair into the rotor through the sleeve in close proximity to a fin-shaped blade integrally provided with the sleeve covering the outer circumference of the rotor. A rotary rotor of a suction nozzle for a vacuum cleaner described in 1.