JPS6122832A - 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 is directed to '+14. The present invention relates to a dust suction device for a vacuum cleaner, and particularly to a dust suction device that uses suction air to rotate a fan, which rotates a brush in conjunction with the fan.

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

That is, in the figure, -1b is a main body case, and the inside 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 surface of the main body case 1b so as to communicate with the chamber in which the rotating brush 3b is disposed; 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 that supports the rotating shaft 12b; 9 is an inlet provided in the partition wall 2 to communicate the two chambers; 6b and 7b are the rotating shaft of the rotating brush 3b and the rotating shaft 12b of the fan 4b, respectively. A belt 8 is wound around and swung around a gear thrown at one end of the belt.

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

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, the rotation is transmitted from the gear 7b to the gear 6b via the belt 8, and the rotating 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 through the above, a rotation transmission mechanism such as the belt 8 is required, which has the drawback of increasing the number of components. In addition, there is a mechanical loss due to the use of the belt 8, such as friction loss between the belt 8 and the gears 7b, 6b, which makes it impossible to effectively utilize the rotational energy generated by the air flow, and also generates noise. . Furthermore, regarding the placement of each part, etc.
It also had the disadvantage of having limitations and lack of design latitude.

<Summary of the Invention> In view of the above-mentioned conventional circumstances, the present invention has 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 reduces the number of components, makes effective use of the rotational energy generated by airflow, and provides dust suction with a large amount of design latitude.In particular, the fixed brush γ installed around the rotating brush The object is to improve the cleaning work efficiency by configuring the device so that it can be moved upward or downward according to the surface to be cleaned.

<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 tool, and 1a is a main body case having a substantially conical shape with one end flared at the end.
have. Reference numeral 15 denotes a connecting portion that projects outward from this slope 14 in a cylindrical shape, and a hook 1 that extends in the circumferential direction is provided at the tip of the connecting portion.
A T is provided. 16 is a pipe that is rotatably fitted into the connecting portion 615; 18 is a substantially cylindrical intake guide having a locally threaded portion 13b outside the upper end;
By fitting b into the female threaded portion 13a, it is connected to the end of the main body case 1a.

3a is a rotary brush having a rotating shaft in the direction of the central axis of the intake guide 18; 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 a support frame 33, and the upper peripheral part of the support frame 33 is
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 have the function of efficiently guiding the suction air flow toward the fan 4a. 20 is a protector made of a soft material and having a plurality of tongues 21 projecting downward. It is fitted into the lower end of the intake guide 1B.

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. The fixing plan 28 is fitted onto the outer circumferential surface of the intake guide 18 so that it can slide freely up and down and can be locked at the end of the slide. In this case, the outer peripheral surface of the intake guide 18 has a third
Groove 26 slopes from top to bottom as shown in the figure.
A pair of support frames 3 for the fixed brush 28 are provided.
A guide bin portion 24 that is inserted into the groove 26 is formed at the contact portion 23 of the inner circumferential surface of the air intake guide 18 with the intake guide 18 .

Note that the terminal end of the groove 26 is configured to serve as a locking part for the guide bin part 24. Therefore, by twisting the fixed brush 28, the guide bin 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. .

That is, by twisting the fixed brush 28 with respect to the intake guide 18, the fixed brush 28 is drawn out downward and protrudes from the lower end of the intake guide 18.

In this case, the direction of inclination of the groove 26 is set so that the twisting direction of the fixed brush 28 coincides with the tightening direction of the screw fitting portion of the intake guide 18 and the main body case 1a.

Reference numeral 30 in FIG. 3 is a sub-intake port provided 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 air intake guide 18. This suction air flows through the guide wall 29,
19, the fan 4a is efficiently driven to rotate, thereby rotating the rotating brush 3a directly connected to the fan 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. Moreover, problems of mechanical loss and noise caused by the use of belts can be solved. Furthermore, there are no restrictions on the placement of parts, etc.
Design latitude can be improved.

Further, according to this configuration, since the fixed brush 28 is configured to be movable to the upper and lower positions, the fixed brush 2B can be made to protrude from the lower end of the main body case 18, and as a result,
The brush part 22 can now be moved freely without contacting the intake guide 18, making it easy to clean the shoji sash or the one-step difference.

In this case, since the twisting direction in which the fixed brush 28 is fed out is made to coincide with the direction in which the screws are tightened between the intake guide 18 and the main body case 1a, a situation in which the screws are loosened does not occur when the fixed brush 28 is fed out.

According to this embodiment, a protector 20 made of a soft material is attached to the tip of the intake guide 18, so that it is safe and will not be damaged even if it collides with the surface to be cleaned.

Furthermore, the protector 20 is provided with a tongue portion 21 so that the lower end side has an uneven surface, and the intake guide 18 is provided with a sub-intake port 30, so that when the suction port 11a comes into contact with the surface to be cleaned, , it is possible to prevent inability to inhale. In addition, since the pipe 16 is rotatably attached to the slope 14 of the main body case 1, the connection angle of the pipe 160 with the main body case 1a can be changed by this rotation, so that it can be used according to the position of the cleaning surface. It is effective and convenient.

Furthermore, since the rotating brush 3a is provided with the guide wall 29, even if turbulent flow of incoming air occurs at the rotating brush 3a, the incoming air is rectified by the guide wall 29, making the fan 4a more efficient. It can be rotated well,
There is an advantage that the fan efficiency can be improved and the fan 4a can be made smaller and lighter.

Furthermore, since the main body 1r and the intake guide 18 are freely connected to each other by screw fitting between the threaded part 13a and the male threaded part 13b provided on both parts, no air buildup will occur in the airflow passage in the main body 1. Dust, etc. can be easily removed by disassembly.

In this embodiment, the brush portion 31 attached to the rotating brush 3a is not limited to the one with flocked hair, but may also be made of soft urethane, cloth, etc., with the expectation that the effect will be sufficient. According to the above, by arranging a fan and a rotating brush in parallel with the suction airflow, and creating a configuration in which the fan and the rotating brush are directly connected, the number of component parts can be reduced and the rotational energy generated by the airflow can be effectively utilized. Not only can it be used, but it can also have a large design latitude. especially.

The fixed brush arranged around the rotating brush is configured so that it can be moved up and down according to the cleaning surface, which has the advantage of improving cleaning work efficiency. Since the structure is configured to coincide with the direction in which the screws are tightened in the screw fitting portion of the main body case, there is an advantage that the screw fitting portion does not become loose.

[Brief explanation of drawings]

Fig. 1 is a plan sectional view showing an example of a conventional dust suction tool, and Fig. 2 is a plan sectional view showing an example of a dust suction tool according to the present invention. Fan 11a...Suction port 18...Intake guide 24
... Guide pin 25 ... Space 26 ... Groove 28 ... Fixed brush 29 ... Guide wall agent
Masuo Oiwa (and 2 others) Figure 1 Figure 2

Claims (1)

[Claims] The dust suction tool body includes a substantially cylindrical intake guide that forms a suction port and is attached to the lower end by screw fitting, and the dust suction tool main body has a rotating shaft in an axial direction perpendicular to the suction port surface. death,
A fan rotated by intake air, and a rotating brush directly connected to the fan and positioned facing the suction port are provided, and the rotating brush is arranged to surround the intake guide with a space therebetween. A fixed brush is provided, a guide pin is provided on the inner circumferential surface of the fixed brush, and a groove is provided on the outer circumferential surface of the intake guide that extends obliquely from the upper part to the lower part, into which the guide pin is inserted, and the guide pin is provided at the terminal end of the guide pin. Slanted grooves each having a locking portion for a pin are provided so that the fixed brush can be drawn out downward by twisting with respect to the intake guide, and the direction of inclination of the grooves is set so that the twisting direction of the fixed brush is set as above. A dust suction tool for a vacuum cleaner, characterized in that the direction is set to match the tightening direction of a screw fitting part of an intake guide and a main body case.