JP4132339B2 - Rotating rotor of floor nozzle for vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary rotor built in a floor nozzle used as an attachment of a vacuum cleaner.
[0002]
[Prior art]
7 and 8 are a front view, partly in section, showing a rotary rotor of a conventional floor nozzle for a vacuum cleaner disclosed in, for example, Japanese Patent Application Laid-Open No. 8-511, and a perspective view of an end portion of the rotor and a bracket. . In the figure, reference numeral 1 denotes a rotary rotor. A rotor 2 constituting the rotary rotor 1 is made of a metal column, and a plurality of support grooves 3 opened on the outer periphery thereof are twisted in the longitudinal direction of the rotor 2 to make a spiral. The rotary rotor is assembled by inserting the cleaning body 4 into the support groove 3 and fitting the outer periphery of both end portions 5 of the rotor 2 and the inner periphery 7 of the bracket 6.
[0003]
If the rotary rotor of the conventional floor nozzle for a vacuum cleaner thus configured is rotated to clean the floor surface or the like, the cleaning body rubs the floor surface, scrapes the floor surface dust, and exhibits a cleaning effect. .
[0004]
[Problems to be solved by the invention]
According to the rotary rotor of the vacuum cleaner floor nozzle configured as described above, the outer diameter of the bracket is larger than the outer diameter of the rotor because the inner periphery of the bracket is fitted to the outer periphery of both ends of the rotor. It was. If the rotor itself has a small diameter, the bracket will not be so large. For example, in order to further improve the cleaning effect, when using six or more cleaning bodies, a support for inserting and fixing the cleaning body is used. The outer diameter of the rotor is increased because the number of grooves required is the same as the number of cleaning bodies, and the outer diameter of the bracket is also very large because the inner periphery of the bracket fits with the outer periphery of the rotor. The housing case itself had the disadvantage of becoming large.
[0005]
In addition, when the outer diameter of the rotor is increased, a method has been devised in which both ends of the rotor are cut and fitted in accordance with the inner diameter of the bracket. However, the cutting cost is excessive and expensive. Had the disadvantage of becoming.
[0006]
The present invention has been made in order to solve the above-described problems. Even when the rotor constituting the rotating rotor has a large diameter, the structure of the rotating rotor can be accommodated by providing a structure capable of making the bracket inexpensive and compact. The purpose is to save space in the department.
[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 to achieve the above object. That is, in the rotary rotor of a vacuum cleaner floor nozzle that is rotated by a driving body provided in the vicinity of the opening of the bottom surface of the main body case, the rotary rotor includes a rod-shaped rotor, a cleaning body attached to the rotor, A bracket having shafts attached to both ends of the rotor and rotatably supported by bearings provided at both ends in the longitudinal direction of the opening, the rotor including a plurality of blades 39 extending radially outward from the shaft center; The support groove 35 for supporting the cleaning body at the tip of each of the blades 39 and the fitting guide 37 that fits the cylindrical portion 38 provided on the bracket on each of the blades 39 are extruded. It is characterized in that it is formed in a spiral shape by twisting around a central axis in the longitudinal direction, and a cylindrical portion 38 of the bracket is provided with a notch 40 at a corresponding position so that it can be inserted into a blade 39. To have.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment FIG. 1 to FIG. 5 show an 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 cleaning body 29, a shaft 30 and a reduction gear 31A. The shaft 30 is rotatably supported by bearings 33 fixed to both ends in the longitudinal direction of the opening 22, and the free end 34 of the cleaning body 29 is open when the rotation is performed. More protruding.
[0010]
The rotor 28 constituting the rotary rotor 27 is a linear rod-like body extruded from aluminum or an alloy thereof. A support groove 35 for supporting the cleaning body 29 and a fitting guide 37 for inserting and fixing the brackets 32 </ b> A and 32 </ b> B are provided in the rotor 28. A plurality of blades 39 extending radially outward from the axis of the rotor 28. Are provided respectively.
[0011]
The brackets 32 </ b> A and 32 </ b> B have a cylindrical portion 38 having an inner diameter that fits the outer diameter of the fitting guide 37 provided on the rotor 28. The cylindrical portion 38 is inserted into the rotor 28. In this case, a notch 40 is provided at a position corresponding to the blade 39.
[0012]
The rotor 28 is cut to a predetermined length, a tool for twisting at both ends is attached, and a twist is applied around a central axis at a predetermined angle, so that both ends gripped by the tool remain straight and are gripped by the tool. The part other than the part is spiral. The base 36 of the cleaning body 29 is inserted and fixed in the support groove 35 of the rotor 28, and the brackets 32A and 32B are fixed to the straight portions at both ends of the rotor 28 to complete the rotary rotor 27. The brackets 32A and 32B are fixed by fitting the inner diameter of the cylindrical portion 38 and the outer diameter of the fitting guide 37 of the rotor 28 together. At this time, since the blades 39 of the rotor 28 are fitted in the notches 40 of the cylindrical portion 38, the effect of preventing the brackets 32A and 32B from rotating is also obtained. Further, the outer diameters of the brackets 32 </ b> A and 32 </ b> B coincide with the outer diameter of the rotor 28 so that the cleaning body 29 does not come out of the support groove 35.
[0013]
Reference numeral 41 denotes a drive body made of an electric motor that rotates the rotary rotor 27, and a reduction gear 31 </ b> B is fixed to the shaft 42. Reference numeral 43 denotes a transmission belt wound around the reduction gear 31A and the reduction gear 31B.
[0014]
In the floor nozzle 20 configured in this manner, the outside air passes through the central passage 25 from the opening 22 in accordance with the operation of the cleaner body (not shown), and enters the cleaner body (not shown) via the intake pipe 26. Sucked. At this time, the drive body 41 rotates, and the rotation is transmitted to the rotary rotor 27 by the reduction gear 31A, the belt 43, and the reduction gear 31B. The cleaning body 29 mounted on the rotary rotor 27 rotates, and its free end 34 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.
[0015]
Since the rotary rotor 27 is configured as described above, the brackets 32A and 32B themselves can be made compact even when the rotor 28 having a large diameter is used, so that the space of the storage portion can be saved.
[0016]
Further, since the brackets 32 </ b> A and 32 </ b> B do not cover the outer side of the rotor 28 at both ends of the rotor 28, the cleaning body 29 can be mounted over the entire length of the rotor 28. Therefore, since the entire length of the rotor 28 can be used as a cleaning part without loss, the rotary rotor 27 has a high cleaning efficiency.
[0017]
In addition, although the drive body 41 for rotating the rotation rotor 27 was demonstrated with the electric motor, a fan is rotated with the attraction | suction force of the electric blower (not shown) accommodated in the cleaner body (not shown). The drive body may be formed using rotation of a traveling wheel (not shown) of the floor nozzle 20 or the like.
[0018]
Further, as another embodiment, as shown in FIG. 6, there is a structure in which the rotary rotor 27 itself rotates by directly applying the air flowing in from the air intake port 44 provided on the upper surface of the floor nozzle to the cleaning body 29. In the present invention, since the rotor 28 can have a large diameter while the brackets 32A and 32B are kept in a compact shape, a larger rotational force can be obtained, leading to an improvement in cleaning efficiency.
[0019]
【The invention's effect】
As is clear from the above description, the floor nozzle for a vacuum cleaner of the present invention can obtain the following effects.
The rotor constituting the rotary rotor has a plurality of blades extending radially outward from the shaft center, each having a support groove and a fitting guide, and the rotor is helically formed by twisting around the central axis in the longitudinal direction. Since the cleaning body is inserted and fixed in the support groove, and the cylindrical portion constituting the bracket is fitted in the fitting guide, and the bracket is fixed to both ends of the rotor, the bracket is fixed even if the rotor has a large diameter. It can be made compact and there is no need to secure a wasteful space. Moreover, since the cleaning body can be mounted over the entire length of the rotor, the cleaning efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of the present invention.
2 is a perspective view with the upper case of FIG. 1 removed. FIG.
FIG. 3 is a front view of the rotary rotor of the present invention.
FIG. 4 is a perspective view of a rotor and a bracket constituting the rotating rotor of the present invention.
FIG. 5 is a perspective view showing a state before the bracket of the rotary rotor of the present invention is attached.
FIG. 6 is a partial cross-sectional view of a floor nozzle showing another embodiment of the present invention.
FIG. 7 is a front view showing a cross section of a part of a conventional rotary rotor.
FIG. 8 is a perspective view of an end portion of a rotor and a bracket constituting a conventional rotary rotor.
[Explanation of symbols]
20 Floor nozzle
21 Body case
22 Opening 27 Rotating rotor 28 Rotor 29 Cleaning element
30 axis 32A, 32B bracket
33 Bearing 35 Support groove 37 Fitting guide 38 Tubular portion 39 Blade 40 Notch 44 Air intake port

Claims (1)

In a rotary rotor of a vacuum cleaner floor nozzle that is rotated by a driving body provided in the vicinity of an opening on a bottom surface of a main body case, the rotary rotor includes a rod-shaped rotor, a cleaning body attached to the rotor, The rotor comprises a bracket having shafts attached to both ends and rotatably supported by bearings provided at both ends in the longitudinal direction of the opening, and the rotor includes a plurality of blades 39 extending radially outward from the shaft center, and blades 39, the support groove 35 for supporting the cleaning body at the tip of each, and the fitting guide 37 fitted to the cylindrical portion 38 provided on the bracket on each of the blades 39 are extruded, and the longitudinal direction is added to twisting about the central axis of the helically formed, cleaner, characterized in that notches 40 in corresponding positions to allow insertion into the blade 39 to the cylindrical portion 38 of the bracket is provided Rotating rotor of the floor nozzle.

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