JP4068010B2 - Rotating rotor of floor nozzle for vacuum cleaner - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a rotary rotor built in a floor nozzle used as an attachment of a vacuum cleaner.
[0002]
[Prior art]
10 and 11 show conventional rotary rotors. In the figure, reference numeral 1 denotes a rotary rotor, and a rotor 2 constituting the rotary rotor 1 is made of a substantially cylindrical metal having a hollow portion 3, and a cleaning body 5 is inserted and fixed in a plurality of support grooves 4 opened on the outer periphery thereof. The rotor 2 is twisted around the shaft so that the cleaning body 5 is spiral, the driven side bracket 8 having the driven pulley 6 and the shaft 7 integrally at both ends of the rotor 2, and the idle side having the shaft 7 integrally. The bracket 9 is fixedly attached, and a bearing holder 12 having a bearing 11 press-fitted and held through a washer 10 is attached to the outside of the bracket 9 and assembled in a state where it is rotatably supported.
[0003]
When the rotary rotor 1 of the conventional floor nozzle for a vacuum cleaner configured as described above is rotated, the cleaning body 5 rubs the floor surface, scrapes up dust on the floor surface, and exhibits a cleaning effect. Moreover, since the rotor 2 has the hollow part 3, even if the outer diameter of the rotor 2 becomes large, it has the merit that a weight reduction can be achieved.
[0004]
[Problems to be solved by the invention]
However, although the rotary rotor 1 of the floor nozzle for a vacuum cleaner configured as described above is reduced in weight by the hollow portion 3 of the rotor 2, the distortion of the cross-sectional shape due to twisting is far more than that of a solid product. However, the straightness required as a rotating body cannot be obtained easily. Furthermore, in the above configuration, the driven side bracket 8 and the play side bracket 9 are press-fitted and bonded and fixed with reference to the rotor 2 whose accuracy is not stable as a reference. There was also.
[0005]
Further, the driven side bracket 8 and the idle side bracket 9 have the shaft 7 integrally formed by insert molding or the like, and it is extremely difficult to completely eliminate the coaxiality between the inner diameter fitted to the rotor 2 and the shaft 7. It was difficult. As described above, in the conventional configuration, there are many elements that deteriorate the accuracy of the rotating body required for the rotary rotor 1, and as a result, the rotational balance is lost, vibration, noise, and noise increase, and the cleaning effect is increased. Also, there was a drawback that uniform cleaning was impossible due to variations.
[0006]
The present invention has been made to solve the above-described problems, and improves the accuracy of a rotary rotor using a hollow rotor, has excellent rotation balance, extremely low vibration, abnormal noise, and noise, and is uniform. An object of the present invention is to provide a rotary rotor that can be cleaned easily.
[0007]
[Means for Solving the Problems]
The rotary rotor of the floor nozzle for a vacuum cleaner according to the present invention is configured as follows.
(1) In a floor nozzle for a vacuum cleaner provided with a rotary rotor in the vicinity of the opening in a main body case having a horizontally long opening for sucking dust on the bottom surface, the rotor constituting the rotary rotor is at the center of the cross section. It has a hollow part that penetrates in the full length direction, and has a support groove for mounting one or more cleaning bodies that open to the outer periphery, and the hollow part is formed longer than the rotor. By inserting a rod-shaped shaft body, and with the shaft body projecting from both ends of the rotor, the rotor is squeezed in a radial direction by applying a predetermined angle torsion around the shaft core, whereby the shaft The body is integrated with the rotor in a non-rotatable state, and the cleaning body is spirally inserted by inserting the cleaning body into the support groove, and brackets are attached to both longitudinal ends of the rotor. Project further outward The shaft body has is obtained by rotatably supported by a bearing.
(2) In a rotary rotor similar to the structure shown in (1) above, the shaft body has a hollow cylindrical shape.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1
1 to 8 show the configuration of the first embodiment. In the figure, reference numeral 20 denotes a floor nozzle, which will be described below. Reference numeral 21 denotes a main body case formed of a lower case 23 having a horizontally long opening 22 on the bottom surface and an upper case 24 covering the lower case 23. One end of the main body case communicates with the opening 22 at the center, and the other end is the main body case 21. It has a central passage 25 extending to the rear end.
[0009]
26 is an intake pipe whose one end is located in the central passage 25 and the other end is connected to the main body (not shown) of the vacuum cleaner, and 27 is a rotary rotor which includes a rotor 28, a shaft body 29, a cleaning body 30, and a reduction pulley 31A. The bearing holder holding portion 37 provided at both ends of the opening 22 in the longitudinal direction of the opening 22 is provided at both ends of the rotary rotor 27. The bearing holder 36 holds the driven side bracket 32, the play side bracket 33, the washer 34, and the bearing 35. By fitting the attached bearing holder 36, the shaft body 29 is rotatably supported by the bearing 35, and the free end 38 of the cleaning body 30 protrudes from the opening 22 during the rotation.
[0010]
The rotor 28 constituting the rotary rotor 27 is a linear rod-like body extruded from aluminum or an alloy thereof, and a support for supporting one or more cleaning bodies 30 that open to the outer periphery in the longitudinal direction. A groove 39 is provided, and has a hollow portion 40 penetrating in the longitudinal direction at the center of the cross section.
[0011]
The shaft body 29 is made of straight round steel or the like, and groove portions 41 are provided at both ends thereof to prevent the bearing holder 36 from coming off. The outer diameter of the portion other than the groove portion 41 of the shaft body 29 is formed to be slightly smaller than the inner diameter of the hollow portion 40 of the rotor 28, and can rotate and slide when inserted into the hollow portion 40 of the rotor 28. However, it is set to a fitting size with less play. Further, the total length of the shaft body 29 is set longer than the total length of the rotor 28.
[0012]
The shaft body 29 is inserted into the hollow portion 40 of the rotor 28, and both end portions of the shaft body 29 are set at positions protruding outward from both ends of the rotor 28. Next, in this state, the rotor 28 is twisted at a predetermined angle around the axis to make the support groove 39 of the rotor 28 spiral. At this time, the inner diameter of the hollow portion 40 of the rotor 28 starts to be deformed in a direction to be narrowed down by twisting. When the narrowed inner diameter is to be made smaller than the outer diameter of the shaft body 29, the rotor 28 and the shaft body 29 are integrated into a state in which they cannot rotate and slide relative to each other.
[0013]
Next, the cleaning body 30 is spirally formed by inserting and fixing the cleaning body 30 in the support groove 39 of the rotor 28 that has been spiraled. The driven side bracket 32 and the play side bracket 33 are provided with a through hole 42 through which the shaft body 29 passes in the center thereof, and has a detent rib 43 on the side fixed to the rotor 28. The driven bracket 32 and the play side bracket 33 are fixed to both ends of the rotor 28, respectively. At this time, the shaft body 29 projecting from both ends of the rotor 28 passes through the through holes 42 provided in the driven side bracket 32 and the play side bracket 33, and further projects outward. The rotation prevention rib 43 is prevented from rotating by fitting with the support groove 39 of the rotor 28.
[0014]
Reference numeral 44 denotes a drive body made of an electric motor that rotates the rotary rotor 27, and a speed reduction pulley 31 </ b> B is fixed to the shaft 45. A transmission belt 46 is wound around the reduction pulley 31A and the reduction pulley 31B.
[0015]
Further, a washer 34 and a bearing holder 36 are attached in this order to complete the rotary rotor 27. As a result, the shaft body 29 is rotatably supported by the bearing 35 press-fitted into the bearing holder 36.
[0016]
The floor nozzle 20 configured as described above passes outside air through the central passage 25 through the opening 22 in accordance with the operation of the cleaner body (not shown), and is sucked into the cleaner body (not shown) through the intake pipe 26. Is done. At this time, the drive body 44 rotates, and the rotation is transmitted to the rotary rotor 27 by the speed reduction pulley 31B, the belt 46, and the speed reduction pulley 31A. The cleaning body 30 attached to the rotary rotor 27 rotates, and its free end 38 protrudes from the opening 22 and collides with the floor surface while rotating, so that dust adhering to the floor surface or scattered dust or the like directly enters the opening 22. Place dust on the outside airflow that is being scooped up or sucked.
[0017]
As described above, the rotary rotor 27 of the present embodiment has a single linearly formed shaft body 29 extending through the shaft core over the entire length thereof, and the shaft body 29 is supported by the bearings 35 at both ends. Therefore, the assembly of the driven side bracket 32 and the idle side bracket 33 prevents the shaft core of the rotating rotor 27 from being inclined, and the shaft body 29 is inserted into the hollow portion 40 of the rotor 28, so Even when the twisting process is performed, the inner diameter of the hollow portion 40 is not deformed to be equal to or smaller than the outer diameter of the shaft body 29. Can be much smaller.
[0018]
Such a rotating rotor 27 has very small runout, and as a result, the amount of unbalance, noise, and vibration when rotating are significantly reduced.
[0019]
In the present embodiment, the drive body 44 for rotating the rotary rotor 27 has been described as an electric motor. However, the fan is driven by the suction force of an electric blower (not shown) housed in a cleaner body (not shown). The driving body may be formed by rotating the wheel or by rotating a traveling wheel (not shown) of the floor nozzle 20. Furthermore, the rotating rotor 27 itself may be rotated by directly applying the flowing air to the cleaning body 30.
[0020]
In the configuration described above, in the configuration in which the rotating rotor 27 itself is rotated by directly applying the flowing air to the cleaning body 30, the speed reduction pulley 31 </ b> A is not required, and therefore, for example, the lower case 23 or the upper case 24 is cleaned. By providing a rib (not shown) that can prevent the body 30 from coming off in the thrust direction, it is possible to omit the driven side bracket 32 and the play side bracket 33 constituting the rotary rotor 27. In such a configuration, the cleaning width can be increased.
[0021]
Further, the rotor 28 has been described as a linear rod-shaped body formed by extrusion molding. However, after the shaft body 29 is inserted using a rotor in which a support groove is spirally formed by twist extrusion molding in advance, the torsion extrusion rotor is inserted. (Not shown) may be further twisted to form a spiral having a larger twist angle.
[0022]
Further, in the present embodiment, the shape of the hollow portion 40 has been described as a circle like the outer diameter contour shape of the shaft body 29, but the cross-sectional shape of the hollow portion 40 is not limited to this, and the rotor 28 is twisted to be hollow. Any shape such as a square or a polygon may be used as long as the shaft 29 can be clamped to the center of the rotor 28 when the portion is narrowed.
[0023]
Embodiment 2
FIG. 9 shows the configuration of the second embodiment. Note that a description of portions that are the same as those in the first embodiment will be omitted. The shaft body 47 is made of straight round steel or the like, and groove portions 48 are provided at both ends thereof to prevent the bearing holder 36 from coming off. Further, a hollow portion 49 is provided in the central portion of the shaft body 47. By using such a shaft body 47, the weight can be reduced as compared with the first embodiment.
[0024]
【The invention's effect】
As apparent from the above description, the rotary rotor of the floor nozzle for a vacuum cleaner according to the present invention can obtain the following effects.
[0025]
(1) In a floor nozzle for a vacuum cleaner in which a rotary casing is provided in the vicinity of the opening in a main body case having a horizontally long opening for sucking dust on the bottom surface, the rotor constituting the rotary rotor has a full length at the center of the cross section. It has a hollow part penetrating in the direction, and has a support groove for mounting one or more cleaning bodies that open to the outer periphery, and the hollow part has a rod-like shape whose overall length is longer than that of the rotor. With the shaft body inserted and the shaft body protruding from both ends of the rotor, the rotor cannot be rotated with the rotor by applying a predetermined angle torsion around the shaft core and narrowing the hollow part in the radial direction. The cleaning body is spiraled by inserting the cleaning body into the support groove, brackets are attached to both ends of the rotor in the longitudinal direction, and the shaft that protrudes further outward from the bracket can be rotated by the bearing. So that the rotating low The runout is very small, unbalance amount when rotating as a result, noise can also be remarkably reduced vibration allows a no cleaning unevenness uniform cleaning.
[0026]
(2) In the same rotating rotor as the structure shown in (1) above, since the shaft body has a hollow cylindrical shape, the rotating rotor has very small runout, and as a result, the unbalance amount and noise when rotated. Further, vibration can be remarkably reduced, uniform cleaning without uneven cleaning becomes possible, the weight of the rotary rotor can be reduced, and the load required for the drive body to rotate can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of Embodiment 1 of the present invention.
FIG. 2 is a plan view with the upper case of FIG. 1 removed.
FIG. 3 is a plan view, partly in section, of the rotary rotor according to the first embodiment of the present invention.
FIG. 4 is a perspective view of a rotor constituting the rotary rotor of the present invention before twisting.
FIG. 5 is a perspective view of a shaft body constituting the rotary rotor of the present invention.
FIG. 6 is a perspective view of a state in which a shaft constituting the rotary rotor of the present invention is inserted into a rotor before twisting.
7 is a perspective view showing a state where the rotor is twisted from the state of FIG. 6; FIG.
FIG. 8 is an exploded perspective view of the rotary rotor according to the embodiment of the present invention.
FIG. 9 is a perspective view of a shaft body constituting the rotary rotor according to the second embodiment of the present invention.
FIG. 10 is a plan view with a cross section of a part of a conventional rotary rotor.
FIG. 11 is an exploded perspective view of a conventional rotary rotor.
[Explanation of symbols]
27 Rotating rotor 28 Rotor 29 Shaft body 30 Cleaning body 32 Drive side bracket 33 Play side bracket 35 Bearing 36 Bearing holder 39 Support groove 40 Hollow part 42 Punching hole 47 Shaft body 49 Hollow part

Claims (2)

In a floor nozzle for a vacuum cleaner provided with a rotary rotor in the vicinity of the opening in a main body case having a horizontally long opening for sucking dust on the bottom surface, the rotor constituting the rotary rotor extends in the full length direction at the center of the cross section. A rod-shaped shaft that has a hollow portion that penetrates and has a support groove for mounting one or more cleaning bodies that open to the outer periphery, and has a total length longer than that of the rotor. In a state where the body is inserted and the shaft body protrudes from both ends of the rotor, the rotor is squeezed in the radial direction by applying a predetermined angle torsion around the shaft core, thereby reducing the shaft body in the radial direction. The rotor is integrated with the rotor in a non-rotatable state, and the cleaning body is inserted into the support groove to make the cleaning body spiral, and brackets are attached to both ends in the longitudinal direction of the rotor, and further outward from the bracket. Protruding Rotating rotor of the floor nozzle for vacuum cleaner characterized by being rotatably supported the Kijikutai at bearings. The rotary rotor of a floor nozzle for a vacuum cleaner according to claim 1, wherein the shaft body has a hollow cylindrical shape.

Images