JPH0662983A - Automatic cleaning device for window washing squeegee - Google Patents

Abstract

PURPOSE:To reduce the number of the parts of a squeegee cleaning mechanism in order to simplify its control mechanism. CONSTITUTION:A rotating squeegee shaft 3 is intermittently rotated by the rotation of a disc plate 7 via a chain 14. The window stains are removed by a scraping part 4 while being held in contact with its water absorbing member 18 during the period of switching the scraping action from a squeegee 6a to the successive one. The scraping part 4 is movable forward and rearward by the rotation of the disc plate 7 via a connecting plate 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a window glass cleaning device for moving along the outer wall surface of a high-rise building and collecting dusts and the like adhering to the window glass by spraying cleaning water and then cleaning them. Device for automatically cleaning a window cleaning squeegee.

[0002]

2. Description of the Related Art In a window glass cleaning device of the above type, when one window is cleaned and then water droplets adhering to the tip of the squeegee are left as it is and the next window is cleaned, water marks remain on the upper part of the window. However, there is a drawback that the film remains on the upper part of the window.

Therefore, there is a device described in Japanese Patent Publication No. 62-54003 as a device for wiping off water droplets attached to the tip of a squeegee.

According to this apparatus, as shown in FIG. 7, a plurality of squeegees b are attached to a squeegee rotary shaft a, and a housing c for accommodating the squeegees is provided with a hydraulic squeegee contact / separation mechanism d for shaft e. , F to move toward and away from the window.
The squeegee rotation shaft a is rotationally driven by a motor g.
While one squeegee b1 is wiping the window, the squeegee b2 waiting to wipe the next window is pressed against the receiving rod l, and the curved tip end surface of the squeegee b2 cleans the cleaning belt i of the squeegee cleaning device h. The brush surface is touched and cleaned. When the squeegee cleaning device h is rotated, the squeegee cleaning device h is rotated about the axis k by the cleaning device rotating mechanism j at a position indicated by an imaginary line in the drawing.

[0005]

The above-described conventional squeegee cleaning device is constructed as a mechanism independent from the squeegee contact / separation mechanism for moving the squeegee toward and away from the window surface. Therefore, the number of parts is large, There is a problem that the frequency of failure is high. In addition, the control mechanism is complicated because the separate and independent controls such as the expansion and contraction control of the squeegee contact / release mechanism, the rotation drive control of the squeegee rotation shaft, the rotation of the squeegee cleaning device, and the belt drive control must be performed in conjunction. There is a problem that high-speed cleaning cannot be performed when the board is thin.

The present invention has been made in view of the problems of the conventional squeegee cleaning device described above. By simplifying the mechanism, the operation of the squeegee cleaning device, the rotational drive of the squeegee rotary shaft (switching of the squeegee), and the squeegee are performed. It is an object of the present invention to provide an automatic squeegee cleaning device that can reduce the occurrence of failures and achieve high-speed cleaning by enabling three operations, that is, an approaching operation and a separating operation to the window surface, to be performed in conjunction with each other.

[0007]

SUMMARY OF THE INVENTION The automatic squeegee cleaning device for window cleaning according to the present invention, which achieves the above object, has one of a plurality of squeegees extending in the axial direction and radially protruding on the outer periphery of a rotary shaft. The squeegee contact that moves the rotary shaft toward and away from the window surface in order to contact or disengage
A squeegee wiping unit including a disengagement mechanism and a water absorbing member having an arcuate inner peripheral surface coaxial with the squeegee rotation shaft with which the tip end of each squeegee abuts, and the squeegee contact / separation mechanism interlocks with the approaching / separating motion. And a squeegee rotating mechanism for sequentially rotating the squeegee rotating shaft between a plurality of predetermined positions.

[0008]

The squeegee wiping portion is provided with a water absorbing member having an arcuate inner peripheral surface which is coaxial with the squeegee rotation shaft and is in contact with the tip end of the squeegee. Therefore, when the squeegee rotation shaft sequentially rotates between predetermined positions, Each squeegee is wiped by rotating while sequentially contacting the water absorbing member. Further, since the rotating operation of the squeegee rotary shaft is interlocked with the approaching / separating motion by the squeegee contact / remove mechanism, the squeegee cleaning operation and the rotation of the squeegee rotary shaft and the approaching / separating operation of the squeegee with respect to the window surface are mutually performed. It is done in conjunction.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show one embodiment of the present invention. FIG. 1 is a perspective view of an automatic squeegee cleaning device, showing a state in which a squeegee is in an advanced position, and FIG. 2 is an end portion of a squeegee wiping portion. Is an enlarged perspective view, FIG. 3 is the same side view, FIG. 4 is the same plan view, FIG. 5 is a side view showing a state in which the squeegee is in the retracted position, and FIG. 6 is a state in which the squeegee is returned to the forward position again. In the side views shown, the side plates of the housing are omitted in the drawings other than FIG. 1 for convenience of description, and the end plates of the wiping portion are omitted in the drawings except FIGS. 2 and 4. is there.

A housing 2 for accommodating the squeegee and the automatic squeegee cleaning device 1 is arranged at an appropriate position in the window glass cleaning device.

A squeegee rotary shaft 3 extending parallel to the window surface
Both ends of the squeegee wiping part 4 described later are shown in FIG.
Is rotatably attached to the end plate 5 fixed to the cover 17 of the squeegee wiping portion 4 so as to cover both end surfaces thereof. Three squeegees 6a, 6b, 6c extending in the axial direction of the rotary shaft 3 and protruding radially are fixed to the outer periphery of the squeegee rotary shaft 3 at intervals of 120 °.

A pair of left and right discs 7 are pivotally attached to the housing side wall 2a by rotating shafts 7a on both sides of the housing 2 behind the squeegee wiping portion 4 when viewed from the window surface w (FIG. 3). . An annular gear 8 is fixed to the inner peripheral edge of the disc 7, and the gear 8 meshes with a gear 10 which is rotationally driven by a motor 9 fixed to the housing bottom plate 2b below the disc 7. is doing. The gears 8 and 10 and the motor 9 form a rotary drive mechanism for the disc 7.

A pair of left and right connecting plates 11 each of which has one end pivotally attached to a part of the outer peripheral portion of each disk 7 and the other end pivotally attached to the rear end of each end plate 5 of the squeegee wiping unit 4 is provided. These connecting plates 11 are provided so that the rotating shaft 3 approaches the window surface w in order to bring one of the squeegees into contact with or away from the window surface w,
A squeegee contact / separation mechanism that separates them is configured.

A chain gear 12 concentric with the rotary shaft 3 is fixed to both ends of the squeegee rotary shaft 3, and a chain gear 13 concentric with the disc 7 is fixed inside the center of the disc 7. A chain 14 is bridged between the chain gears 12 and 13. Rollers 15 and 16 are in contact with the upper side and the lower side of the middle of the chain 14, respectively, by a spring mechanism (not shown) so as to press the chain downward from above. The chain gears 12, 13, the chain 14, and the rollers 15, 16 form a squeegee rotation mechanism.

The diameter ratio of the chain gears 12 and 13 depends on the number of squeegees attached. In the case of this embodiment, three squeegees are attached, and the intervals between the squeegees are 120 °, so the diameter ratio of the chain gears 12 and 13 is 3: 1. That is, when the chain gear 13 makes one rotation, the chain gear 12 makes one third rotation, the squeegee that had been in the position to clean the window until then moves to the squeegee wiping position, and the next squeegee that was waiting until then is replaced. To reach the window cleaning position.

The squeegee wiping unit 4 is a water absorbing member cover 17 formed in a tubular shape coaxial with the squeegee rotating shaft 3 having an opening on the window surface w side, and a soft water absorbing member such as a felt attached to the inside of the water absorbing member cover 17. The water absorbing member 18 is made of a material having excellent properties. The water absorbing member has an arcuate inner peripheral surface that is coaxial with the squeegee rotation shaft 3, and is provided with each squeegee 6a, 6b, 6c.
Is arranged at a position such that the tip end of the sheet comes into contact with and is wiped.

Four rollers 19 are provided in the lower portion of the squeegee wiping unit 4 so that the wiping unit 4 can be moved in the front-rear direction. 20 is a cleaning water supply nozzle.

Next, the operation of the squeegee automatic cleaning device having the above structure will be described. In the state shown in FIGS. 1 to 4, the connecting plate 11 is located closest to the window surface w, and therefore the squeegee rotary shaft 3 is also located closest to the window surface w. Squeegee 6 in this position
a is in contact with the window surface w and is placed at a position where the window surface w can be cleaned. Further, in this position, the squeegee rotary shaft 3 is located farthest from the disc 7, and the chain 14 is placed in a tensioned state between the chain gears 12 and 13.

In this state, while lowering the window glass cleaning device, cleaning water is supplied from the cleaning water supply nozzle 20 to clean the window surface w by the squeegee 6a.

When the cleaning of one window surface is completed, the motor 9
Rotates a predetermined number of revolutions, whereby the disc 7 makes one revolution in the direction of arrow A.

While the disk 7 rotates 180 ° from the position shown in FIG. 1, the squeegee wiping unit 4 and the squeegee rotary shaft 3 move in the direction away from the window surface w by the retraction of the connecting plate 11, and the disk 7 rotates 180 °. When rotated, the connecting plate 11 reaches a position farthest from the window surface w as shown in FIG. 5, the squeegee 6a reaches a position rotated downward by 90 ° from the position in FIG. 1, and the squeegees 6b and 6c have their tips. As a result, the parts rotate 90 ° each so as to lick the water absorbing member 18,
The tips of the squeegees 6b and 6c are wiped. Further, as a result of the gap between the chain gears 12 and 13 becoming narrow, the chain 14 gets on and off, but the rollers 15 and 16 move downward due to the biasing force of the spring, so that the chain 14 is prevented from getting on and off.

When the disk further rotates 180 ° from the position shown in FIG. 5, the squeegee wiping unit 4 and the rotary shaft 3 are connected to the connecting plate 1
The forward movement of 1 moves in a direction approaching the window surface w, and the state shown in FIG. 6 is obtained. That is, the connecting plate 11, the squeegee rotating shaft 3, and the squeegee wiping portion 4 are located closest to the window surface w as in FIG. 1, and the squeegees 6a, 6b, 6c
1 reaches a position rotated by 120 ° from the position shown in FIG. 1, the squeegee 6c is in a position to clean the window surface w, and the squeegee 6a which has cleaned the window surface w until now is in a position to be wiped by the water absorbing member.

Thereafter, the window cleaning operation, the squeegee switching operation, and the squeegee wiping operation are repeated in the same manner as described above.

[0024]

As described above, according to the present invention, the squeegee wiping portion is provided with the water absorbing member which is coaxial with the squeegee rotation shaft and has the arcuate inner peripheral surface with which the tip end of the squeegee abuts. When the squeegee rotary shaft sequentially rotates between predetermined positions, each squeegee is wiped by rotating while sequentially contacting the water absorbing member, and the squeegee rotary shaft is rotated by a squeegee contact / separation mechanism. Since the squeegee cleaning operation and the rotation of the squeegee rotary shaft and the squeegee approaching and separating operation with respect to the window surface are interlocked with each other, the squeegee cleaning operation is interlocked. Therefore, the three operations of the wiping operation of the squeegee cleaning device, the rotational driving of the squeegee rotary shaft (switching of the squeegee), and the approaching and separating operations of the squeegee with respect to the window surface are interlocked during one rotation of the disc 7 and are performed at once. Therefore, it is possible to save the number of parts and reduce the failure rate as compared with the mechanism that performs these operations independently and independently as in the conventional device. Compared with this, the control mechanism is also simple, and high-speed cleaning can be easily performed even when the window casing is thin.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an automatic squeegee cleaning device according to the present invention, showing a state in which a squeegee is at a forward position.

FIG. 2 is an enlarged perspective view showing an end portion of a squeegee wiping portion of the device.

FIG. 3 is a side view of the device.

FIG. 4 is a plan view of the device.

FIG. 5 is a side view showing a state in which the squeegee is in the retracted position.

FIG. 6 is a side view showing a state where the squeegee has returned to the forward movement position again.

FIG. 7 is a partial sectional view showing a conventional squeegee cleaning device.

[Explanation of symbols]

 1 Squeegee Automatic Cleaning Device 2 Housing 3 Squeegee Rotating Shaft 4 Squeegee Cleaning Section 6a, 6b, 6c Squeegee 11 Connecting Plate 12, 13 Chain Gear 14 Chain 17 Water Absorbing Member Cover 18 Water Absorbing Member

Claims (1)

[Claims] 1. A squeegee contact for moving the rotating shaft toward and away from the window surface in order to bring one of a plurality of squeegees extending in the axial direction on the outer periphery of the rotating shaft into contact with and leaving from the window surface.・ A squeegee wiping unit including a disengagement mechanism and a water absorbing member having an arcuate inner peripheral surface coaxial with the squeegee rotation shaft with which the tip of each squeegee abuts, and the squeegee contact / separation mechanism interlocks with the approaching / separating motion. And a squeegee rotation mechanism for sequentially rotating the squeegee rotation shaft between a plurality of predetermined positions.