JPH04218125A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve the traveling feature of an vacuum cleaner, by forcing the cleaner body not to contact a floor at the rear bottom face thereof when the roller is forced afloat on passing over doorsills or the like. CONSTITUTION:Rear rollers 11 are provided at the upper part than the extended line connecting the ground-contact points of the wheel 7 and the front roller 5, in the rear part of the traveling wheel 7. The roller face of the roller 11 is made to protrude from the bottom face of the cleaner body 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner for home or industrial use, which is provided with support legs for standing on the rear side.

0002

2. Description of the Related Art The structure of a conventional vacuum cleaner of this type will be explained with reference to FIGS. 5 and 6.

That is, the vacuum cleaner main body (hereinafter simply referred to as the main body) 21 has a motor chamber 23 containing a motor 33 and the like.
In the rear half thereof, there is a dust collection chamber 24 in front of which a paper bag 30 is attached to collect dust, and the upper part of the dust collection chamber 24 communicates with the paper bag 30 attached so as to be openable and closable, and a hose is connected to the dust collection chamber 24. It has a lid body 29 with an air intake port 28.

[0004] On the rear surface of the main body 21, support legs 31 are provided at the top and near the bottom to stabilize the main body 21 when it is placed upright. Further, rollers 22 are provided on both outer surfaces of the main body 21 at the motor chamber 23 position, and a rotating body 22 having a roller B25 on a circular shaft 26 is provided on the outer bottom surface at the dust collection chamber 24 position.
7 is rotatably attached. Further, within the motor chamber 23 of the main body 21, a motor 33 and a cord reel 32 are arranged in a vertical line in the front-rear direction of the main body 21.

[0005] Since the roller 22 is provided next to the motor 33 near the center of gravity, the user pulls the main body 21 through the hose when moving and improves small turning performance when changing direction.

[0006]

However, in the above conventional configuration, when the user pulls the main body 21 and climbs over an obstacle such as a threshold, the roller B25 at the front of the main body 21
When the main body 21 is placed on top of an obstacle, the bottom surface of the main body 21 behind the roller 22 of the main body 21 hits the floor. Also,
When the user holds the handle 34 and stands up the main body 21, the bottom surface of the main body 21 behind the rollers 22 hits the floor, causing damage to the floor.

[0007] Therefore, the present invention is intended to solve these problems, and a first object is to provide a vacuum cleaner that prevents scratches on the floor and has good running performance, such as overcoming obstacles. shall be.

A second object of the present invention is to provide a vacuum cleaner in which rollers also serve as supporting legs when the main body is placed upright.

[0009]

[Means for Solving the Problems] In order to achieve the first object, the vacuum cleaner of the present invention has a grounding point between the wheels (rollers) on the bottom of the main body and the front rollers. A rear roller is provided above the connecting extension line so that its roller surface protrudes from the bottom surface of the main body.

In order to achieve the second objective, the rear roller has a roller surface that protrudes from the bottom surface of the main body,
It is also provided at a position that serves as a support leg on the lower end side of the rear surface of the main body.

[0011]

[Function] With the above structure, the rear part of the bottom of the main body is supported by the rear roller before it hits the floor, so the bottom of the main body can be prevented from directly hitting the floor. Also,
By arranging it in a position that allows the main body to stand upright, it can also be used as a support leg for the rear of the main body.

0012

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

As shown in FIGS. 1 and 2, the main body 1 has a motor chamber 2 configured by arranging a motor 14 and a cord reel 15 in tandem in the front-rear direction of the main body 1, and a paper bag 10 in front of the motor chamber 2.
The upper part of the dust collection chamber 3 is connected to a paper bag 10 which is attached so as to be openable and closable, and has an air intake port 8 to which a hose (not shown) is connected. Lid body 9
Furthermore, the handle 16 is provided in the frontmost part and has a rod-like shape in the width direction of the main body 1 which is gripped by the user.

Two support legs 12 are provided on the rear surface of the main body 1, one above (upper end side) and the other below (lower end side), for stabilizing the main body 1 when standing. Further, a roller 7 is provided on the outer surface of the motor 14 near the center of gravity of the main body 1, and a dust collection chamber 3
A rotating body 6 having a roller B5 is rotatably mounted on the circular shaft 4 on the outer bottom surface of the position.

On the bottom surface of the main body 1 behind the roller 7, there is provided a roller C11 with its roller surface (rotating surface) protruding from the bottom surface of the main body 1 above the extension line of the line connecting the grounding points of the roller 7 and the roller B5. It is rotatably mounted by a shaft 13.

3 and 4 are other embodiments in which the support legs 12 on the rear surface of the main body 1 are formed only in the upper part, and the lower part is also provided by a roller C11.

The above is the configuration of the present invention, and as described above, the roller C11 prevents the rear bottom surface of the main body 1 from directly touching the ground when the front part of the main body 1 rises due to passing over an obstacle, etc. To prevent the floor surface of a main body 1 from being scratched and to improve the running performance when going over a slope. moreover,
Lift up the front part of main body 1 and remove roller 7 and roller C.
11, it is possible to clean high places while running stably.

[0018] Also, by serving as the support leg 12,
When raising the main body 1 upright, when only the roller C11 is in contact with the ground, the roller C11 rolls in the direction in which the main body 1 stands upright, making the raising operation easier.

Furthermore, by gripping the handle 16 by hand, only the roller C11 is brought into contact with the ground, making it easier to travel and moving, thereby reducing the burden on the user. In addition, the number of supporting legs can be reduced, mold processing is easy, and the manufacturing schedule can be shortened.

[0020]

Effects of the Invention As is clear from the above description, the present invention provides rollers (rear By arranging the roller (roller) so that its roller surface protrudes from the main body, the bottom of the main body comes into direct contact with the ground when passing over obstacles, preventing damage to the floor surface and improving running performance when passing over obstacles. Make it.

[0021] Furthermore, by raising the front part of the main body, it is possible to clean high places while moving stably with the rollers and roller C.

[0022]Furthermore, by serving as supporting legs, the raising operation becomes easier, and by reducing the number of supporting legs, processing of the molding die becomes easier.

[0023] In addition, it is easy to use, as you can hold the handle in your hand and move and clean it with only the roller C in contact with the ground, preventing the main body from moving in unexpected directions and damaging furniture, etc. We can provide you with a good and useful vacuum cleaner.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view of a vacuum cleaner showing an embodiment of the present invention.

[Figure 2] Rear external view

[Fig. 3] Partially cutaway sectional view of another embodiment

[Figure 4] Rear external view

[Figure 5] Partially cutaway sectional view of a conventional vacuum cleaner

[Figure 6]
Rear external view

[Explanation of symbols]

1 Vacuum cleaner body 2 Motor room 3 Dust collection room 4 Circular shaft 5 Roller B (front roller) 6 Rotating body 7 Roller (wheel) 8 Intake port 11 Roller C (rear roller) 12 Support legs 14 Motor 15 Cord reel

Claims (2)

[Claims] Claim 1: a vacuum cleaner body having a motor chamber containing a motor and a cord reel; a vacuum cleaner body having an air intake port and a dust collection chamber in the front part of the motor chamber; Wheels are provided and run on the vacuum cleaner body in the front-rear direction of the vacuum cleaner body, and wheels rotate when the vacuum cleaner body runs through a circular shaft and a rotating body provided at the bottom of the vacuum cleaner body in front of the wheels. A movable front roller, and support feet that enable the vacuum cleaner body to stand on the rear surface of the vacuum cleaner body, and a rear roller is provided at the bottom of the vacuum cleaner body behind the wheels, and the rear roller is mounted on the bottom of the vacuum cleaner body behind the wheels. A vacuum cleaner in which a roller surface is provided above an extension of a line connecting the ground point of the wheel and the front roller and protrudes from the bottom of the vacuum cleaner main body. 2. The rear roller is positioned above an extension line of a line connecting the front roller at the front of the vacuum cleaner body and the grounding point of the wheel, and at a position that serves as a support leg on the lower end side of the rear surface of the vacuum cleaner body. 2. The vacuum cleaner according to claim 1, wherein the surface roller is provided to protrude from the bottom of the vacuum cleaner body.