JPH04122230A - Floor nozzle of vacuum cleaner - Google Patents

Abstract

PURPOSE:To enable a vacuum cleaner to easily get over a door-sill or the like without damaging the door-sill or the like by deposing a second roller projecting the outer periphery from the front face of a floor nozzle in front of an inlet port of the floor nozzle. CONSTITUTION:A plurality of second rollers 11 formed of a soft material are pivotably supported by a shaft 13 in a lower nozzle member 3 to project the outer periphery in front to the front face 12 of the lower nozzle member 3. When a floor nozzle collides with a door-sill or the like, the second rollers 11 are rotated to ride on and easily get over the door-sill or the like and move to a stage upper than the door-sill. The second roller 11 is supported pivotably by the lower nozzle member 3 through a shaft 14 and bearing 15 and further urged forward by an elastic coiled spring 16 to move forward and backward of the lower nozzle member 3. When the floor nozzle collides with furniture, wall, etc., the second roller 11 enters the lower nozzle member 3, so that the distal end of the floor nozzle makes direct contact with the wall to eliminate dust left unsucked at the wall.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner used in general households.

2. Description of the Related Art The structure of a floor nozzle of a conventional vacuum cleaner of this type will be described with reference to FIG. As shown in the figure, ■ is a connecting pipe connected to the vacuum cleaner main body, and is rotatably connected to the upper nozzle member. Reference numeral 3 denotes a lower nozzle member rotatably connected to the upper nozzle member 2, which has a suction port 5 on the lower surface, a large-diameter first roller 6 behind the suction port 5, and a small-diameter second roller 6 in front of the suction port 5. rollers 7 are respectively arranged. 4
is a sealing material that airtightly seals between the connecting pipe 1 and the upper nozzle member.

Problems to be Solved by the Invention With the floor nozzle of such a conventional vacuum cleaner, when cleaning, if there is a threshold etc., the front of the room of the floor nozzle
The suction port may damage the sill by hitting the sill, or when cleaning a room with a sill, the suction port must be lifted to get over the sill, making it inconvenient to use.

The present invention solves the above-mentioned problems, and provides an easy-to-use vacuum cleaner that makes it easy to get over obstacles such as thresholds that protrude upward from the floor of a room, and that does not damage thresholds or furniture with the floor nozzle. Intended to provide floor nozzles.

Means for Solving the Problems In order to achieve the above object, the present invention provides a second roller which is disposed in front of the suction port of the lower nozzle member and with its outer periphery protruding from the front surface of the lower nozzle member. This is what I did.

Further, the second roller is elastically supported by an elastic body on the lower nozzle member so as to be freely undulating in the front-rear direction.

Function The present invention has the above-described configuration, so that the front surface of the floor nozzle does not come into contact with a sill or the like, and the second roller can easily get over the sill or the like. Moreover, since the second roller is elastically supported by the floor nozzle, even if the second roller hits furniture, etc., the furniture, etc. will not be damaged by the elastic cushion.

EXAMPLE Hereinafter, a first example of the present invention will be described with reference to FIGS. 1 to 3. Note that parts that are the same as those shown in the conventional example are given the same reference numerals and explanations will be omitted.

Reference numeral 11 denotes a plurality of second rollers made of a soft material, which are rotatably attached to the lower nozzle member 3 around a shaft 13 so that the outer periphery of the rollers protrudes in front of the front surface 12 of the lower nozzle member 3. .

With this configuration, as shown in FIG. 3, when the floor nozzle hits a threshold etc., the second roller 11 rotates and the second
As shown by the dotted chain line, it is possible to climb onto a threshold, etc., easily get over the threshold, etc., or move to a step above the threshold, etc.

Next, a second embodiment will be described with reference to FIGS. 4 and 5. As shown in FIG. 4, the second roller 11 is rotatably attached to the lower nozzle member 3 by a shaft 14 and a bearing 15, and furthermore, the second roller 11 is attached to the lower nozzle member 3 by a coil spring 16, which is an elastic body, so that it can freely move forward in the front and rear direction. is energized by

With this configuration, as shown in FIG. 5, when the floor nozzle hits furniture or a wall, the second roller 11 enters into the lower nozzle member 3, so the tip of the floor nozzle reaches all the way to the wall. You can eliminate leftover dirt. Also,
Since the second roller 11 is made of a soft material, there is no risk of damaging the wall even if it hits the wall. Note that the ability to easily overcome thresholds and the like is similar to the description of the first embodiment.

Effects of the Invention As is clear from the description of the embodiments, according to the present invention, the second roller is disposed in front of the suction port of the floor nozzle and with its outer periphery protruding from the front surface of the floor nozzle. Therefore, it is possible to easily get over the threshold, etc., without damaging the threshold, etc.
The rollers are arranged in a flexible manner in the front and rear directions of the floor nozzle, making it possible to clean furniture and walls without any hitches, saving the trouble of lifting the floor nozzle every time you cross over a threshold, etc. It is possible to provide a floor nozzle for a vacuum cleaner that is easy to use.

[Brief explanation of the drawing]

1 is a side sectional view of a floor nozzle of a vacuum cleaner according to the first embodiment of the present invention, FIG. 2 is a bottom view of the same floor nozzle, FIG. 3 is an explanatory diagram of the operation of the same floor nozzle, and FIG. 4 5 is a side sectional view of a floor nozzle of a vacuum cleaner according to the second embodiment, FIG. 5 is a diagram illustrating the operation of the same floor nozzle, and FIG. 6 is a side sectional view of a floor nozzle of a conventional vacuum cleaner. 1... Connection pipe, 2... Upper nozzle member, 3... Lower nozzle member, 5... Suction port, 6...... No. 1 roller, 11...second roller, 12...front surface of lower nozzle member,
16... Coil spring (elastic body).

Claims (2)

[Claims] (1) An upper nozzle member rotatably connected to a connecting pipe connected to a vacuum cleaner, a lower nozzle member rotatably connected to the upper nozzle member and having a suction port on its lower surface, and the lower nozzle member A first roller disposed behind the suction port of the member, and a second roller disposed in front of the suction port of the lower nozzle member and with its outer periphery protruding from the front surface of the lower nozzle member. A floor nozzle for a vacuum cleaner that is equipped with a roller. (2) A floor nozzle for a vacuum cleaner according to claim 1, wherein the second roller is elastically supported by an elastic body on the lower nozzle member so as to freely emit waves in the front and back direction.