JPS6122830A - Dust sucking device of electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a dust suction device for a vacuum cleaner, and more particularly to a dust suction device having a structure in which a fan is rotated by suction air and a brush is rotated in conjunction with the fan.

<Conventional technology> A conventional example of this type of dust collection is shown in FIG.

That is, in the figure, 1b is a main body case, the interior of which is divided into two chambers by a partition wall 2. 3b is a rotating brush disposed in one chamber, 11b is a suction port formed on the bottom surface of the main body case 11) so as to communicate with the chamber in which the rotating brush 3b is disposed, and 4b is disposed in the other chamber. The fan has a rotating shaft 12b parallel to the rotating shaft of the rotating brush 3b. 5b is a bearing 59 that supports the rotating shaft 12b, and is provided in the partition wall 2 to communicate the two chambers; 6b and 7b are respectively connected to the rotating shaft of the rotating brush 3b;
A belt 8 is wound around a gear provided at one end of the rotating shaft 12b of the 7-inch 4h.

A pipe 10 connects the dust suction tool to the vacuum cleaner side, and is connected to the main body case 1b so as to communicate with a chamber in which a fan 4b is installed.

Such a dust suction tool is used by being connected to a vacuum cleaner, and when the vacuum cleaner is driven, suction air first flows from the suction port 11b into the chamber in which the rotating brush 3b of the main body case 1b is disposed. This suction air is throttled by the inlet 9 of the partition wall 2 and collides with the fan 4b with an increased flow velocity. As a result, the fan 4b rotates, rotation is transmitted from the gear 7b to the gear 6b via the belt 8, and the -turning brush 3b rotates.

However, in the conventional dust suction tool as described above, the fan 4b is rotated by the suction air, and this rotational force is transferred to the belt 8.
Since the rotation is transmitted to the rotating brush 3b via the belt 8, a rotation transmission mechanism such as the belt 8 is required, which has the drawback of increasing the number of components. Mechanical loss 2 due to the use of belt 8 For example, friction loss occurs between belt 8 and gears 7b and 6b, which has the drawback of not being able to effectively utilize the rotational energy generated by air flow, and also generating noise. . Furthermore, there are also restrictions regarding the arrangement of each component, and there is also the drawback that there is little margin in terms of design.

<Summary of the Invention> In view of the above-mentioned conventional circumstances, the present invention provides a configuration in which a fan and a rotating brush are arranged in parallel with respect to the suction air flow, and the fan and the rotating brush are directly connected. This allows for a reduction in the number of component parts, effective use of rotational energy generated by airflow, and a thicker design with greater design latitude.
An object of the present invention is to provide a dust suction tool that can be carried by the user, and in particular, to improve fan efficiency by providing a rotating brush with a suction air guide wall.

<Embodiment of the Invention> Hereinafter, an embodiment of the present invention will be described based on FIGS. 2 and 3.

In Fig. 2, 1 is the main body of the dust suction device, and 1a is the main body case, which is approximately conical in shape with one end widening.

It has a female threaded part 13a on the inner periphery of the end which widens at the end, and has a 11"
It has a slope 14 on the side. Reference numeral 15 designates a connecting portion that projects outwardly from the slope 14 in a cylindrical shape, and a hook 17 that projects in the circumferential direction is provided at the tip of the connecting portion. 16 is connection part 1
The pipe 18, which is rotatably fitted into the pipe 5, is a substantially cylindrical intake guide with a suction port 11a opened at the lower end, and has a threaded portion 13b on the outer periphery of the upper end. By fitting into the female threaded portion 13a, the main body case 1
a Connected to the lower end.

3a is a rotating brush having a rotating shaft in the direction of the central axis of the intake guide 18, and 12a is a rotating shaft to which the rotating brush 3a' is fixedly attached by a nut 32, and is supported by a bearing 5a. Reference numeral 4a denotes an axial fan fixedly attached to the upper end of the rotating shaft 12a by press fitting, and is located inside the main body case 1a.

The rotating brush 3a includes a brush portion 31 and a brush portion 31.
It consists of the left side of the support frame 33, and at the upper end of the support frame 33,
A guide wall 29 for suction air extending in a cylindrical shape having the same diameter as this is integrally molded. Also, at the upper end of the intake guide 18,
A guide wall 19 that extends in a cylindrical shape and surrounds the lower end of the fan 4a with a gap is integrally molded. These guide walls 29 and 19 efficiently direct the suction air flow, respectively.
It has the function of guiding it towards the fan 4a (・ru.20
A protector is made of a soft material and has a plurality of tongues 21 projecting downward, and is fitted onto the lower end of the intake guide 18. A fixed brush 28 is disposed around the intake guide 18 so as to form a space 25 between the brush 28 and the outer peripheral surface of the intake guide 18, and is composed of a support frame 34 and a brush portion 22. This fixed brush 28 is placed on the outer peripheral surface of the intake guide 18.
It is fitted so that it can slide freely downward and can be locked at the end of the slide. In this case, the outer peripheral surface of the intake guide 1B has a groove 26 that slopes from the top to the bottom as shown in FIG.
A pair of support frames 3 for the fixed brush 28 are provided.
A guide pin portion 24 that is inserted into the groove 26 is formed at the abutment portion 23 on the inner peripheral surface of the guide 18 .

Therefore, by giving the fixed brush 28 a twist, the guide pin portion 24 can move up and down while being guided by the groove 26, and can be locked at each end of the groove 26. There is. 30 in FIG. 3 is an auxiliary suction port opened in a portion of the intake guide 18 corresponding to the space 25.

The dust suction tool configured as described above is connected to a vacuum cleaner, and when the suction force of the vacuum cleaner is applied, air flows in along the inner wall of the intake guide 18. This suction air flows through the guide wall 29
．． 19, the fan 4a is efficiently driven to rotate, thereby rotating the rotary brush 3a directly connected to the seventh ann 4a.

According to the dust suction tool having such a configuration, the fan 4a and the rotating brush 3a are arranged in parallel rows with respect to the suction air flow, and the fan 4a
Since the rotary brush 3a is directly connected to the rotary brush 3a, the conventional belt etc. can be omitted and the number of components can be reduced. In addition, the problems of mechanical loss and noise caused by the use of belts can be solved. Historically, there are no restrictions on the placement of parts, etc.
Design latitude can be improved.

Furthermore, according to this configuration, since the guide wall 29 is provided on the single-rotation brush 3a, even if turbulence of incoming air occurs at the rotating brush 33 portion, the incoming air will flow through the guide wall 2.
Since the flow is rectified by 9, the fan 4a can be rotated efficiently, improving fan efficiency and increasing the fan 4a.
This has the advantage that it can be made smaller and lighter.

According to this embodiment, a protector 20 made of a soft material is attached to the tip of the intake guide 18. It is safe and does not cause any damage even if it collides with the cleaning surface.

Furthermore, since the fixed brush 28 is configured to be movable to the upper and lower positions, the fixed brush 28 can be made to protrude from the lower end of the main body case 1a, and as a result, the brush portion 22 can be prevented from coming into contact with the intake guide 18. Now you can move it freely, making it easier to clean branches of shoji screens, steps, etc.

Furthermore, the protector 20 is provided with a tongue portion 21 so that the lower end side becomes an uneven surface, and the sub-suction port 30 is provided on the intake guide 18, so that when the suction port 11a comes into contact with the surface of the zero-button stand. , prevent the inability to inhale. Father, since the pipe 16 is attached to the slope 14 of the main body case 1 so that it can rotate freely, this rotation allows you to change the connection angle of the pipe 16 with the main case 1a, so that it can be used to suit the cleaning surface Iff. It is effective and convenient.

Furthermore, since the main f% + - space 1a and the intake guide 18 are freely connected to each other by screw fitting between the threaded portion 13a and the male threaded portion 13b provided on both, the airflow passage inside the main body 1 is Dust etc. that have accumulated in the can be easily removed by disassembling it.

In this embodiment, the brush portion 31 attached to the 5-rotation brush 3a is limited to those with flocked hair, but even soft urethane, cloth, etc. can be used to achieve the desired effect. Moreover, the same effect can be obtained even if the fixed brush 28 is configured to move upwardly and downwardly by simply providing grooves on the side of the intake guide 18 in upward and downward directions and stoppers at both ends.

<Effects of the Invention> As explained above, according to the present invention, the fan and the rotating brush are arranged in parallel rows 12 with respect to the suction air flow, and the fan and the rotating brush are directly connected. The number of parts can be reduced, the rotational energy generated by the airflow can be used effectively, and the design can have greater latitude. In particular, the configuration in which the rotating brush is provided with a suction air guide wall has the effect of improving fan efficiency and making the fan smaller and lighter.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view showing an example of a conventional dust suction tool, and FIG.
The figure is a front view showing the outer surface shape of the intake guide in the same embodiment. 1...Dust suction tool body 3a...Rotation plan 4a
...Fan 11a...Suction port 29...Guide wall cost 741 people Masuo Oiwa (and 2 others) Figure 1 Figure 2 3J31 21

Claims (1)

[Claims] A dust suction tool main body provided with a suction port includes a fan having a rotating shaft in an axial direction perpendicular to the suction port forming surface and rotated by suction air; a rotating brush located at a position facing the rotating brush, and the rotating brush is provided with a suction air guide wall extending in a cylindrical shape having approximately the same diameter as the rotating brush in the direction of the rotation axis in the downstream direction of the suction air. Features: Dust suction tool for vacuum cleaners.