JPH04117932A - Floor suction implement for vacuum cleaner - Google Patents

Abstract

PURPOSE:To constitute the floor suction implement so that its moving operation can be executed smoothly not only forward and backward but also in the oblique direction by providing a caster on the front side in the vicinity of a suction port of the floor suction implement. CONSTITUTION:A caster unit 13 consisting of a caster roller 12 supported so as to be freely turnable by a caster main body 11 provided so as to be freely turnable in the horizontal direction by a shaft 10 is provided in a front position of a floor suction implement 2. When the floor suction implement 2 is moved, the caster roller 12 converts automatically the direction so as to turn along the moving direction of the floor suction implement 2, the caster roller 12 comes to turn in a state that it always conforms with the moving direction of the floor suction implement 2 and the floor suction implement 2 can be moved smoothly not only forward and backward but also in the oblique direction. It is also allowed that a caster main body 21 provided so as to be freely turnable in the horizontal direction by a shaft 20 is provided so as to be freely movable vertically on the shaft 20 through a spring 22, a caster unit 24 is constituted by supporting a caster roller 23 so as to be freely turnable in the caster main body 21, and it is provided in the front position of the floor suction implement 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a floor suction tool for vacuum cleaners used in general households.

BACKGROUND OF THE INVENTION In recent years, in order to make it easier to move the floor suction device of a vacuum cleaner, a floor suction device equipped with a roller has become mainstream.

The conventional floor suction device of this type of vacuum cleaner was developed in 1982.
A configuration as shown in Japanese Patent No. 78849 was common. That is, the configuration will be explained below with reference to FIG. As shown in the figure, a connector 3 for connecting a floor suction tool 2 is connected via a sealing material 4 to a connecting pipe 1 that connects to a main body (not shown) of a vacuum cleaner. A suction port 5 is provided below the floor suction tool 2, two large diameter rollers 6 are arranged in parallel behind the suction port 5, and a small diameter roller 6 is provided in front of the suction port 5. Two small rollers 7 are arranged in parallel.

Problems to be Solved by the Invention In such a conventional configuration, when cleaning by operating the vacuum cleaner body (not shown), the large roller 6 and small roller 7 are placed on the lower surface of the floor suction tool 2. Since 41 pieces are installed in parallel, two on the front and two on the back, movement in the front and back directions can be performed smoothly, but it is difficult to operate diagonally. Especially when driving on "strong" or on carpets, etc. When moving, there is a problem that it is difficult to operate.The present invention solves the above problems and aims to provide a floor suction tool for a vacuum cleaner that is easy to operate.

Means for Solving the Problems In order to achieve the above object, the present invention disposes casters on the front side of a floor suction device near the suction port.

Function The present invention has the above-described structure, and by disposing rollers at the rear and casters at the front of the floor suction tool, it can be easily moved not only in the front-back direction but also in the diagonal direction.

EXAMPLE A first example of the present invention will be described below with reference to FIGS. 1 and 2.

Note that the same parts as in the conventional example are given the same numbers and detailed explanations are omitted.

As shown in the figure, a caster unit 1 includes a caster roller 12 that is rotatably supported by a caster body 11 that is rotatably provided in the horizontal direction by a shaft 10.
3 is provided at the front position of the floor suction tool 2.

In the above configuration, when the floor suction tool 2 is moved, the caster rollers 1 provided on the front side of the floor suction tool 2
2 automatically changes direction so that it rotates along the moving direction of the floor suction tool 2, and the caster roller 12 always rotates in a state that matches the moving direction of the floor suction tool 2. The suction tool 2 can be moved smoothly not only in the front and back directions (but also in diagonal directions).

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4.

Note that the same parts as in the first embodiment are given the same numbers and detailed explanations will be omitted.

As shown in the figure, a caster body 21 is rotatably provided in the horizontal direction by a shaft 20, and a caster body 21 is provided on the shaft 20 via a spring 22 so as to be vertically movable, and a caster roller 23 is rotatably mounted on the caster body 21. The caster unit 24 is supported by the caster unit 24, and is provided at a position in front of the floor suction tool 2.

In the configuration described in item 1, when moving the floor suction device 2 on a flat floor surface, the same effect as in the first embodiment is obtained, but when there is an obstacle such as a threshold, the caster unit 24 The caster rollers 23 are moved up and down by the cushion of the provided springs 22, and the floor suction tool 2 can be moved over the threshold while the impact when the caster rollers 23 come into contact with the threshold is alleviated.

Effects of the Invention As is clear from the above embodiments, since casters are attached to the front side of the floor suction device, the floor suction device can be smoothly moved not only back and forth but also diagonally, improving usability. In addition, it is effective in rooms with many obstacles such as tables and furniture, and when it is necessary to change the direction of the floor suction tool many times during cleaning.

Furthermore, since the casters are held by springs, it becomes easier to climb over obstacles such as thresholds.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a floor suction device according to a first embodiment of the present invention;
Fig. 2 is a bottom view of the suction device for the same floor, Fig. 3 is a longitudinal sectional view of the suction device for the floor of the second embodiment, Fig. 4 is a bottom view of the suction device for the same floor, and Fig. 5 is a conventional FIG. 3 is a longitudinal cross-sectional view of the floor suction tool. 2...Floor suction device, 5...Intake port, 6
...Roller, 12.23...Caster roller, 22...Spring. Name of agent: Patent attorney Haruaki Ogata and two others Toshi'”) (', 1

Claims (2)

[Claims] (1) A floor suction device for a vacuum cleaner that has a roller behind the intake port and a caster roller that can change direction freely in front of the intake port. (2) The floor suction tool for a vacuum cleaner according to claim 1, further comprising a caster roller provided in front of the air intake port so as to be freely changeable in direction and supported vertically via an elastic body such as a spring.