JPH0560453U - Suction nozzle for vacuum cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] The height of the corner brush is automatically changed in response to changes in the unevenness of the floor without changing the rotation mechanism of the corner brush of the suction nozzle of the conventional vacuum cleaner. [Configuration] Rotating shaft 16 for transmitting rotation to the corner brush 3
One end of each of the links 22a and 22b is rotatably supported by the shaft 23a, and one end of each of the links 22c and 22d is rotatably connected to each of the other ends of the links 22a and 22b by the shafts 23b and 23c. The corner brush core 5 is attached to the shaft 2 at the other end of the links 22c and 22d.
Mount rotatably with 3d and e. Also, the rotating shaft 1
The guide shaft 21 is fixed coaxially with the guide shaft 6, and the guide shaft 21 is inserted into the guide hole 5a of the brush core portion 5. [Effect] Since the rotary shaft 16 that transmits the rotational force and the corner brush 3 are connected by the pantograph-type links 22a, b, c, d, the corner brush 3 rotates horizontally with the floor surface and responds to unevenness of the floor surface. Since it can move up and down, it is possible to clean the dust on the uneven surface of the floor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vertical movement mechanism of a corner brush for cleaning corners and corners of a vacuum cleaner, especially a cleaning robot.

[0002]

[Prior Art]

 FIG. 7 is a plan view showing the structure of a conventional corner brush, and FIG. 8 is a side view showing the structure of a conventional corner brush.

As shown in FIGS. 7 and 8, the conventional corner brush device has a structure in which a motor 7 and a power brush 6 are connected by a power transmission belt 8a, and at the same time, the driving force for rotating the power brush 6 is a belt. It is transmitted to the left and right worms 11a, b by 8a, b and 9a, b.

The worms 11a and 11b mesh with the worm wheels 12a and 12b to convert the rotational force into a right angle. The worm wheels 12a and 12b are connected to the belt pulley 10d by a shaft 13a. Further, the belt pulley 10d is connected to belt pulleys 10a, b, c rotatably supported at both ends of the brush supporting plates 14a, b by power transmission belts 9a, b.

Further, the belt pulley 10 a is coaxially attached to the corner brush 3 via the corner brush rotating shaft 16.

Further, as shown in the figure, a wheel 23 is attached to the suction nozzle 2 of the conventional vacuum cleaner in order to smooth the movement of the suction nozzle 2, and the height with the floor 24 is kept constant. There is.

Next, the operation of the conventional corner brush device will be described. The rotational force of the motor 7 is transmitted to the power brush 6 by the power transmission belt 8a. At the same time, the worm 11a is rotated so that the worm wheel 12a converts the rotation direction to a right angle and the belt pulleys 10a, 10b, 10c, and 10d transmit the rotational force to the corner brush 3a. The rotational force transmitted to the power brush 6 rotates the worm 11b by the power transmission belt 8b, and the corner brush 3b rotates in the same manner as above.

[0008]

[Problems to be solved by the device]

 As described above, in the conventional corner brush device for a vacuum cleaner, since the suction nozzle 2 is held at a certain height from the floor surface by the wheels 23, it is fixed to the suction nozzle 2 when the floor surface is flat. The corner brush 3 contacts the floor surface at a constant height and can perform sufficient cleaning. However, the floor surface is often not perfectly flat, in which case the corner brush 3 may not come into contact with the floor surface, or conversely, the brush 3 may be pressed against the floor surface to hinder the running. ..

[0009]

[Means for Solving the Problems]

 A vacuum cleaner equipped with a corner brush rotatably attached to the suction nozzle body of the vacuum cleaner in a direction substantially horizontal to the floor surface, and a rotating means for rotating the corner brush in a direction substantially horizontal to the axis. In the suction nozzle for use, a structure is provided that includes a connecting means for connecting the rotating means and the corner brush so that the corner brush can expand and contract, and the corner brush can be moved up and down in a direction substantially perpendicular to the floor surface. It has two first links rotatably attached to the step and two second links rotatably attached to the corner brush at one end thereof. The other end of each is rotatably attached.

[0010]

[Action]

 With the above configuration, changes in the height of the nozzle and changes in the height of the corner brush and floor due to the unevenness of the floor, etc. are automatically adjusted, and at the same time, the driving force can be transmitted and the corners and corners are thoroughly cleaned. I can do things.

[0011]

【Example】

 An embodiment of the present invention will be described in detail with reference to FIGS. 1 is a side view showing an embodiment of the present proposal, FIG. 2 is a detailed side view showing the operation of the present proposal, FIG. 3 is a side view showing another embodiment, and FIG. 4 is a corner brush device of the present invention. It is a perspective view of the attached cleaning robot. The same components as those in the conventional technique are designated by the same reference numerals, and the description thereof will be omitted. In the present invention, there is no change in the configuration of the transmission system for the rotational force of the corner brushes 3a, 3b, and the rotational force of the motor 7 is transmitted to the rotary shaft 16 as described in the prior art. Between the rotary shaft 16 and the corner brushes 3a and 3b, a pantograph link mechanism 20 having both rotatable ends is arranged as shown in FIG.

The pantograph mechanism 20 includes plate-shaped links 22a, bc, d having holes 26 (not shown) at both ends. The links 22a and 22b are rotatably supported by the rotary shaft 16 by a shaft 23a at one end, and are rotatably supported by one ends of the links 22c and d by shafts 23b and c at the other end. The other ends of the links 22c and 22d are rotatably supported by the corner brush core portion 5 by shafts 23d and 23e. A guide shaft 21 is fixed coaxially with the rotary shaft 16, and the guide shaft 21 is vertically movably inserted into a guide hole 5a provided at the center of the corner brush core portion 5.

Next, the operation of the corner brush having the pantograph mechanism 20 will be described. When the floor surface is flat, as shown in FIG. 2A, the pantograph mechanism 22 is at the neutral position, and the links 22a, b, c, d form a substantially square shape. When the floor surface has a recess, as shown in FIG. 2B, the corner brush 3 is lowered, the pantograph mechanism 22 is extended, and the guide shaft 21 moves upward in the guide hole 5a.

When the floor surface has a recess, as shown in FIG. 2C, the corner brush 3 is lifted up, the pantograph mechanism 22 is contracted, and the guide shaft 21 is moved downward in the guide hole 5a. Move to.

As described above, according to this embodiment, the corner brushes 3 move up and down while rotating according to the unevenness of the floor surface, and the tips of the corner brushes 3 are always in contact with the floor surface. Even irregular dust can be reliably caught and sucked by the corner brush 3. Further, since the pantograph mechanism 22 and the guide shaft 16 are combined, the corner brush 3 moves vertically up and down, so that the corner brush 3 comes into horizontal contact with the floor surface, and the cleaning efficiency can be improved.

In the present embodiment, the corner brush 3 is lowered by its own weight, but in order to more surely bring the corner brush into contact with the floor surface, as shown in FIG. A twist coil spring 27 is inserted between the shafts 22c and 22d so as to apply a pressing force to the pantagraf mechanism 22 itself, or, as shown in FIG. 4, a guide shaft between the rotary shaft 16 and the corner brush core portion 5 is provided. An elastic body 28 such as a spring may be inserted around 21. Furthermore, as a simpler structure, as shown in FIG. 5, the corner brush 3 may rotate and move up and down by connecting the belt pulley 10a and the corner brush core 5 with a coil spring 29.

[0017]

[Effect of the device]

 According to the present invention, the corner brush attached to the suction brush moves up and down according to the unevenness of the floor surface while rotating horizontally with respect to the floor surface, so that dust on the floor surface is not dented on the floor surface. It can be cleaned regardless of whether it is convex or not.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment according to the present invention.

FIG. 2A is an enlarged view of a main part of an embodiment according to the present invention. (B) An enlarged view of a main part of an embodiment according to the present invention. (C) An enlarged view of a main part of an embodiment according to the present invention.

FIG. 3 is an enlarged view of a main part of another embodiment according to the present invention.

FIG. 4 is an enlarged view of a main part of another embodiment according to the present invention.

FIG. 5 is an enlarged view of a main part of another embodiment according to the present invention.

FIG. 6 is a perspective view of a cleaning robot equipped with a suction nozzle for a cleaner according to the present invention.

FIG. 7 is a plan view of a suction nozzle according to the related art.

FIG. 8 is a side sectional view of a suction nozzle according to the related art.

[Explanation of symbols]

 1 Cleaning Robot 2 Suction Nozzle 3 Corner Brush 5 Corner Brush Core 10a Belt Pulley 16 Rotating Shaft 20 Pantograph Mechanism 21 Guide Shaft 22a, b, c, d Link 23a, b, c, d, e Axis 27 Torsion Coil Spring 28 Elastic Body 29 coil spring

Claims (2)

[Scope of utility model registration request] 1. A corner brush rotatably attached to a suction nozzle body of a vacuum cleaner in a direction substantially horizontal to a floor surface, and a rotating means for rotating the corner brush in a direction substantially horizontal to the floor surface. In a suction nozzle for a vacuum cleaner provided with, the corner brush is configured to be movable up and down in a substantially vertical direction with respect to a floor surface, by including a connecting means for connecting the rotating means and the corner brush in a stretchable manner. Characteristic suction nozzle for vacuum cleaner. 2. The connecting means has two first links whose one end is rotatably attached to the rotating means and two second links whose one end is rotatably attached to the corner brush. The nozzle for a vacuum cleaner according to claim 1, characterized in that the other end of each of the first and second links is rotatably attached.