JPH0489020A - Nozzle device for vacuum cleaner - Google Patents

Abstract

PURPOSE:To make a brush take a circular motion and vibrate by passing a handle of a brush through the closed end of an inner cylinder which is inserted in an outer cylinder of a vacuum cleaner nozzle and closed at one end, and opening a window in the longitudinal direction on the side wall of the inner cylinder, whereby the handle is forced to take a circular motion by a turning current caused by sucked air. CONSTITUTION:The forward end portion 2 of an outer cylinder 1 of a nozzle is deformed to be flat, and a brush 3 is disposed there. The forward end side of an inner cylinder 5 is closed by a soft member 6 and a hole is bored in the central portion thereof. A handle 4 of the brush is passed through the hole. The handle 4 of the brush 3 is supported near the closed end of the inner cylinder 5 from the side wall of the inner cylinder, and the brush handle 4 is capable of moving freely until the terminal end 10 thereof is brought into contact with the inner wall of the inner cylinder. A rectangular window 11 is opened in the longitudinal direction on the side wall of the inner cylinder between the terminal end 10 of the brush handle 4 and its supporting point. Air is sucked from the forward end portion 2 of the nozzle outer cylinder and passed through the window 11 provided on the inner cylinder 5 to enter the inner cylinder, so that a turning current is produced along the inner wall of the inner cylinder 5. Thus, the brush handle 4 is dragged in the turning current and forced to take a circular motion while the terminal end 10 of the brush handle being brought into contact with the inner wall, so that the brush 3 is moved like a duster.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dust suction nozzle for a vacuum cleaner, and particularly to a suction nozzle device that functions as a so-called duster to remove dust adhering to the complex uneven surface of an article. Pertains to.

[Conventional technology]

Conventionally, there is a nozzle device with a rotating brush as an attachment for vacuum cleaners that removes dust attached to complex uneven surfaces.
The rotational force of this rotating brush can be obtained either from an electric motor or from air suction force. The present invention belongs to the latter technique that uses air suction force to move the brush, but in the conventional technique, the rotational force and direction of the brush were designed exclusively for cleaning utensils. However, there are disadvantages such as the nozzle device is heavy, the mechanism is complex, and it is not durable.

[Purpose of the invention]

The purpose of the present invention is to develop a nozzle device that has a "duster" action, which does not use the action and structure of a conventional rotating brush, is lightweight, requires almost no structural parts, and can be used exclusively for the air of a vacuum cleaner. The purpose of this invention is to provide a nozzle device in which the suction force is used to vibrate the blade in a circular motion, and this vibration force is comparable to conventional rotating brushes.

[Means to achieve the purpose]

In order to achieve the above object, in the present invention, an inner cylinder with one end closed is inserted into an outer cylinder of a vacuum cleaner nozzle having a brush arranged at the tip, and the handle of the plano is inserted into the closed end. At the same time, the handle is supported in the inner cylinder, and a window is opened in the longitudinal direction of the side wall of the inner cylinder so that the air sucked into the inner cylinder generates a swirling flow along the inner wall. ,
The handle was caught in the swirling flow and moved in a circular motion.

〔Example〕

A perspective view of an embodiment of the present invention is shown in FIG. 1, with a portion cut away to show the internal structure.

] is a nozzle outer cylinder, the tip part 2 is deformed into a flat shape and a brush is disposed therein, and the opposite end, that is, the base part, is closed off from the outside air. The tip 2 of the nozzle outer cylinder 1 may be deformed into a flat shape, or may be formed separately into a flat shape and connected to the outer cylinder l.

3 is a brush that moves within the flat part and is fixed to the handle 4 65
is an inner cylinder which is suitably fixed coaxially within the nozzle outer cylinder 1 and extends through the closed end of the outer fil. At this closed end, the outer cylinder 1 is threaded on its outer periphery, and the inner cylinder 5 tightly tightens and closes the bag nuff 13 passed therethrough. The distal end side of the inner cylinder 5 is closed with a flexible member 6 such as a rubber plate, and a hole is made in the center of this closing member, and the brush handle 4 passes through this hole. The other end 7 of the inner cylinder 5 is connected to a vacuum cleaner body (not shown) via a flexible tube.

The handle 4 of the brush 3 is supported from the inner cylinder side wall near the closed end of the inner cylinder 5, a perspective view of which is shown in FIG.

First, a part of the brush handle 4 is made thinner and a hole 9 is made there in the longitudinal direction of the main body of the brush 3. Meanwhile, the bottle 8 is loosely inserted into the hole 9 from the side wall of the inner cylinder 5 in the direction of the brush and in the diametrical direction. , fix both ends of the bottle 8 to the side wall. Such a bearing mechanism allows the brush handle 4 to move freely until its end 10 abuts the inner wall of the inner cylinder.

A rectangular 's11 is made in the longitudinal direction of the side wall of the inner cylinder between the end 10 of the brush handle 4 and its support point, but one longitudinal side is not cut off but is bent outward to overhang the outer periphery of the inner cylinder. Introduction of air sucked into the inner cylinder 5! 12.

[Effect]

When the root part of the inner cylinder of the nozzle is connected to the flexible pipe of a vacuum cleaner (not shown) and vacuum suction is performed, air is sucked from the tip part 2 of the nozzle outer cylinder and passes between the outer cylinder 1 and the inner cylinder 5. , enters into the inner cylinder through the groove II provided in the inner cylinder 5, and is sucked into the cleaner body through the other end 7 while generating a swirling flow along the inner wall of the inner cylinder 5. At this time, the brush handle 4 is caught in this swirling flow, and the end 10 of the brush handle comes into contact with the inner wall and moves in a circular motion, causing the brush 3 to move like a duster. This effect is illustrated in FIG. 3, which is a cross-section through the inner cylinder 5 at the distal end 10 of the brush handle.

Regarding the support mechanism for the brush handle 4, in this embodiment, the bottle 8 is provided in the same direction as the brush body 3, but this direction is not critical. The point is that the brush handle 4 is relatively swingably supported at the support point, and the brush body can move freely both in the left and right directions and in the right angle direction. Since the purpose of the present invention is to perform a dusting action, the motion of the brush does not need to be set to a strict circular motion; in short, it is sufficient to vibrate finely.

[Modified example]

The end 1o of the brush handle 4 may be configured as a roller to reduce friction with the inner wall. Also, introduction of suction air W12
The inner cylinder 5 instead of protruding diagonally outward from the inner cylinder 5
Although it is possible to generate a swirling flow inside the inner cylinder by bending it diagonally inward, it is possible to create a swirling flow inside the inner cylinder by providing a plurality of wings as shown in the example drawings and overhanging the blade to the extent that it fits perfectly within the inner diameter of the outer cylinder.
If friction is applied to the outer cylinder, the inner cylinder can be fixed within the outer cylinder by the elasticity of the overhanging wings 12, making it convenient to replace the inner cylinder assembly. Alternatively, the outer cylinder 1 may have a flat structure, for example, an oval cross section,
An inner cylinder 5 having a circular cross section may be fitted into this short diameter portion.

〔effect〕

The nozzle device according to the present invention has an extremely simple structure in which the inner cylinder assembly is simply fitted into the outer cylinder, and when the inner cylinder is fitted, the relative positions of the inner and outer cylinders are adjusted in the axial direction as well. There is no need for precision in the radial direction either. This means that no special tools or techniques are required to fit the inner circle assembly, and the inner circle assembly can be easily removed, cleaned, and replaced at home, making it highly practical as a household item. is high. In addition, the inner circular assembly is simply a structure that swings and supports one point of the brush handle within the inner cylinder, and this supporting structure also does not require precision, and a supporting structure with play is better. Rather preferable. This has an extremely large manufacturing margin and contributes to reducing production costs.

The nozzle device according to the present invention does not have a large weight unlike the conventional nozzle device, is easy to handle, and has high practicality as an accessory for a household vacuum cleaner.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the nozzle father I of the present invention;
Figure 2 is a perspective view showing the brush handle support mechanism in detail;
The figure is a sectional view taken at a right angle at the end of the brush handle to explain the operation of the nozzle device of the present invention. 1 - Nozzle outer cylinder 2 - Tuzzle outer cylinder tip end brush inner cylindrical support hole 1 - Elongated window 3 - Public naphto brush handle bottle brush handle end - Introduction wing

Claims (1)

[Claims] 1. An inner cylinder with one end closed is arranged in an outer cylinder of a vacuum cleaner nozzle having a brush arranged at its tip, and the handle of the brush is passed through the closed end, and the handle is inserted into the inner cylinder with one end closed. is supported in the inner cylinder, and a window is formed in the side wall of the inner cylinder along its length so that air sucked into the inner cylinder generates a swirling flow along the inner wall. Vacuum cleaner nozzle device. 2. The nozzle device for a vacuum cleaner according to claim 1, wherein the end of the brush handle is configured as a roller. 3. The nozzle device for a vacuum cleaner according to claim 1, characterized in that an air suction introduction blade projects obliquely outward from one long side of the window provided in the inner cylinder. 4. The nozzle device for a vacuum cleaner as set forth in claim 3, characterized in that a plurality of the introduction blades are provided and the inner cylinder is fitted into the nozzle outer cylinder by utilizing their elasticity. 5. The nozzle device for a vacuum cleaner according to claim 1, wherein the inner cylinder and the outer cylinder are integrally constructed. 6. The vacuum cleaner according to claim 1, wherein the nozzle outer cylinder is a cylinder having a substantially oval cross section, and an inner cylinder having a diameter substantially equal to the short axis of the nozzle outer cylinder is fitted therein. nozzle device.