JPH0220982Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a cleaning tool that is convenient for use in cleaning glass surfaces such as window glass of buildings, shop windows, and product display cases.

Conventional technology Conventionally, this type of cleaning tool has a pair of handle-equipped plates with a ferrite permanent magnet embedded in each, and uses the attraction force of the magnets to press the window glass from the inside and outside. While holding the plate and rotating or moving it along the window glass surface from the indoor side, cleaning the window glass surface with a brush or fin-shaped rubber piece planted on one side of the plate will generate magnetic force. A cleaning tool is known in which the outside of a window glass can be safely cleaned indoors by causing the other outdoor side plate to follow the movement of the indoor side plate.

Problem: However, the cleaning tool described above requires considerable suction force in order to overcome the sliding resistance between the glass surface and the contact surface of the cleaning tool and make the cleaning plate on the indoor side freely follow the cleaning plate on the outdoor side. If this attractive force is realized by a ferrite permanent magnet, the proportion of the volume occupied by the magnet will tend to be excessive, and this will also have the disadvantage of increasing design constraints. On the other hand, when considering the weight and operability of the product, there was a dilemma that the suction power was insufficient, and the wiping efficiency and followability of the outdoor side to the indoor side plate were poor. Furthermore, if the cleaning plate on the outside of the room were to fall, it would be very dangerous, but there was no simple means to prevent this.

Structure of the invention The present invention was developed in response to these circumstances, and has a structure that reduces the sliding resistance between the glass surface and the cleaning tool. By using a rare earth permanent magnet that is about 4 to 10 times larger than a magnet and maintaining sufficient suction power, the cleaning plate can be rotated at any speed to efficiently wipe away dirt on glass surfaces, etc. can be done, and in the unlikely event that
Even if the outer cleaning plate deviates from the magnetic field of the inner cleaning plate, a cleaning tool is realized in which there is no risk of falling and causing accidents such as personal injury or property damage.

The gist of the present invention is that, regarding the glass surface to be cleaned, there is a drive-side cleaning plate that presses against the glass surface from the worker's side, and a drive-side cleaning plate that is opposed to the drive-side cleaning plate by the attraction force of a magnet from the side opposite to the worker's side. It consists of a driven side cleaning plate that presses against the glass surface, etc., and each of these cleaning plates has one side of the cleaning plate covered with felt-like material, sponge material, brush-like material, textile material such as cloth, etc. A plate pressure bearing part consisting of a contact body rotatably provided via a rolling bearing on a short shaft protruding from the center of rotation of this surface so as to be rotatable integrally with the cleaning plate. has
By setting the height of the supporting portion from the surface of the cleaning plate to be approximately equal to or slightly lower than the surface formed by the wiping member, the wiping member can be used more easily than necessary.
It prevents pressure contact with the glass surface, etc., and keeps the sliding resistance between the glass surface and the wiping member below a certain limit.
Further, the driving side cleaning plate supports the driven side cleaning plate so as to be able to move and stop freely on the glass surface, with the wiping member holding surfaces of both cleaning plates pinching the plate body such as a window glass. Each cleaning plate is composed of a rare earth element and a transition metal, so that
So-called rare earth permanent magnets surround the rotation center of the cleaning plate and are fixedly installed at four or more locations, and the output shaft of the variable speed motor is attached to the surface of the drive-side cleaning plate opposite to the wiping member holding surface. is directly connected to the motor, or a drive shaft rotated by the motor is attached to rotate integrally with the drive side cleaning plate, and the driven side cleaning plate has a side opposite to the wiping member holding surface. The cleaning tool has one end of a drop-preventing string connected to the cleaning tool near the center of rotation via a rolling bearing that is freely rotatable. Hereinafter, a detailed explanation will be given based on one embodiment.

FIG. 1 shows a cleaning tool according to the present invention on a window glass 50.
The cleaning tool of the present invention has a drive-side cleaning plate 1 having a substantially square shape, and a magnet on the opposite side of the cleaning plate 1 and the window glass 50 to be cleaned by the attraction force of the magnet. It has a driven side cleaning plate 21 which is attached and held, and these cleaning plates 1 and 21 have a
Frame-shaped wiping members 2, 22 made of felt-shaped synthetic fibers are fixed around the plate surface by projections 3, 23 provided on the cleaning plate. The wiping member may be detachably attached to the cleaning plate using a hook-and-loop fastener or the like. On the inner side of the wiping members 2, 22, frame-shaped stepped portions 4, 24 are formed in which the thickness of the cleaning plate protrudes stepwise and becomes thicker. Both cleaning plates 1,
Short shafts 5, 1 integrally protrude from 21 in the right angle direction.
5 is provided, and rolling bearings 6, 16 are externally fitted and fixed to the short shafts 5, 15.

Outer rings 6a, 16a of these rolling bearings 6, 16
A substantially ring-shaped contact body 7, 17 is fitted in the outer ring so as to extend the outer ring in the axial direction, thereby forming a plate pressure bearing part. The height of each of the plate pressure bearing parts from the cleaning plate surface (the length from the base of the short axis 5, 15 to the contact part with the window glass surface of the contact body) is determined by the surface of the wiping member 2, 22. Almost the same as
Alternatively, by setting the wiping members 2, 22 to be in a slightly lower state, the wiping members 2, 22 are prevented from being excessively pressed against the window glass surface. In addition, four rectangular recesses are formed in the frame-shaped step portions 4 and 24 to surround the rotation center of the cleaning plate.
In this, rare earth permanent magnets 8, 8..., 28, 28
..., for example, a Nd-Fe-B permanent magnet is housed, and the holding lids 9, 29... hold the fixing tools 10,
10... is fixed. Examples of rare earth magnets include, in addition to those mentioned above, two-phase separation type rare earth magnets. Further, in the center of the surface of the drive-side cleaning plate 1 opposite to the wiping member mounting surface, an output shaft 12 of a motor 11 whose speed can be freely changed is mounted on the cleaning plate 1.
It is attached so that it can rotate as a unit. 13 is
An operation handle is rotatably attached to the motor 11 at one end, 14 is a transmission of the motor, and 15 is a handle.

On the other hand, a protruding shaft 20 is provided near the center of the surface of the driven-side cleaning plate 21 opposite to the wiping member mounting surface, and the protruding shaft 20 has a roller that can freely rotate relative to the driven-side cleaning plate. A ball bearing 31 is installed as a bearing, and this ball bearing 3
The outer ring 32 of 1 is provided with a hanging cord 33 to prevent it from falling.

In the above embodiment, the motor 11 has its output shaft 1
2 has been shown as an example in which the motor is directly connected to the cleaning plate, but the motor may also be mounted near the hand and its output shaft connected to the cleaning plate via a flexible shaft or other power transmission means. Furthermore, if a multi-pole magnetized permanent magnet is used, there will be no unevenness in the attractive force, and the followability and cleaning power will be even better.

Effects In the cleaning tool according to the present invention, the driving side cleaning plate is applied to the window glass surface from the inside of the window of a high-rise building, and the driven side cleaning plate is attached with the above-mentioned hanging string 33 hung from the upper floor. They are placed opposite each other with the window glass in between, and held by the attractive force of the magnet. In this state, if you move the glass surface while rotating the motor at a moderate speed, the driven side cleaning plate will follow and move while rotating, and the cleaning agent pre-soaked in the wiping member will clean the window glass. Cleaned. Several types of wiping members are prepared depending on the work process, and the wiping members are replaced one after another. In this way, the present invention uses permanent magnets that are 4 to 10 times stronger than conventional magnets and are placed around the rotation center of the cleaning plate, so it does not have the same suction force as conventional cleaning tools. There is no unevenness, and the followability of the outer cleaning plate is extremely excellent.In addition, the plate pressure bearing part can be rotated freely relative to the cleaning plate side, reducing the frictional force between the cleaning plate and the glass surface as much as possible. Due to its structure, even when using a wiping member such as a felt-like material that has a high wiping effect but also high sliding resistance, it operates smoothly, has excellent followability, and allows extremely efficient work. This has resulted in a cleaning tool that can prevent accidents caused by the outer cleaning plate falling.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a cross section of the cleaning tool according to the present invention in a used state. FIG. 2 is a partially exploded plan view of the drive-side cleaning plate.

Claims (1)

[Scope of utility model registration request] It has a driving side cleaning plate and a driven side cleaning plate, and each of the cleaning plates holds a wiping member replaceably on one side of the cleaning plate, and rotates integrally with the cleaning plate around the rotation center of the surface. It has a plate pressure bearing part consisting of a contact body rotatably provided via a rolling bearing on the short shaft that is protrusively provided, and the height of the plate pressure support part is approximately equal to the surface formed by the wiping member. or slightly lower than that, and the driving-side cleaning plate pushes the driven-side cleaning plate against the window glass with the wiping member holding surfaces of both cleaning plates pinching each other against a plate such as a window glass. Four or more rare earth permanent magnet pieces are fixedly attached to each of the cleaning plates so as to be able to move and stop freely on a plate such as glass, surrounding the center of rotation of the cleaning plate. The output shaft of the variable speed motor or the drive shaft rotated by the variable speed motor is attached to the surface opposite to the wiping member holding surface so that it can rotate integrally with the driving side cleaning plate, and the driven side cleaning A cleaning tool characterized in that one end of a fall prevention string is connected to the plate via a rolling bearing that is freely rotatably attached near the center of rotation on the opposite side of the wiping member holding surface.