JP3267483B2 - Squeegee connection device for floor washer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor cleaning machine (hereinafter referred to as a floor cleaning machine) in which a cleaning brush is rotated while receiving a supply of cleaning water to clean a floor surface, and a squeegee sucks and collects waste water after cleaning. The present invention relates to a connecting device for connecting a squeegee to a floor washer side.

[0002]

2. Description of the Related Art As shown in FIGS. 1 and 2 of Japanese Patent Application Laid-Open No. 5-168580 or FIG. A squeegee for absorbing the sewage after washing and collecting it in a sewage tank is connected to the squeegee.

FIG. 7 schematically shows a bottom view of a conventional floor washer. In FIG. 7, A is a vehicle body, B is a cleaning brush, and C is a vehicle body A using a connecting bracket D. A squeegee connected to the rear in a flexible state, Ca indicates a connection port of a vacuum hose, E indicates a connection shaft, and a squeegee C will be used as a fulcrum with the connection shaft E as a fulcrum as the vehicle A travels within a range shown by a virtual line. It is designed to rotate in the direction to suck up sewage on the floor.

[0004]

However, as described above, the conventional floor washer in which the squeegee C is connected so as to rotate in the horizontal direction about the connecting shaft E as a fulcrum is the residual water remaining behind the squeegee C. When the vehicle body A is moved backward to absorb water, the squeegee C tilts to the state shown in FIG. 8 with the connecting shaft E as a fulcrum, and there is a problem that the residual water cannot be absorbed satisfactorily.

Further, in the above-described conventional floor washer, a squeegee C is connected to a rear portion of the vehicle body A, and the squeegee C is always moved while being dragged. In such a case, the squeegee that moves by dragging the cleanly cleaned floor surface must be carefully re-contaminated.

Therefore, it has been considered that the squeegee C is lifted by a string or the like when the floor washer is moving. However, the conventional floor washer rotates the vehicle body A to turn the corner of the wall. In order to sufficiently cover the range of the turning locus of the cleaning brush B when cleaning the squeegee, the squeegee C is connected to a rear position away from the vehicle body A by using a connection bracket D formed relatively long. Therefore, the entire weight including the squeegee C is increased, making it difficult to lift with the string or the like.
There has been a problem that the connecting bracket D and its mounting portion are damaged by excessive lifting.

Accordingly, it is an object of the present invention to lock the posture of the squeegee in a straight state with respect to the vehicle body when the floor washer moves backward, and to move the squeegee when the floor washer travels. The purpose is to be able to easily pull up from the floor surface with relatively little force.

[0008]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

[0009] In a floor cleaning machine configured to rotate a cleaning brush while receiving a supply of cleaning water to clean a floor surface, and to collect and collect sewage after cleaning by a squeegee,

(1) A squeegee is rotatably connected to the rear part of the body of the washing machine via a tow bracket so as to be rotatable in the left and right directions. The tow bracket includes a posture of the squeegee when the body is operated in reverse. An automatic lock mechanism configured to lock the squeegee in a straight state with respect to the vehicle body, and to release the lock and return the squeegee to a rotatable state when the vehicle body moves forward.

(2) An elongated guide hole is formed in the front-rear direction of the rear end of the towing bracket connected to the rear of the vehicle body, and a connection bracket is mounted on the upper surface of the squeegee toward the vehicle body. The connecting bracket is connected to the rear end of the towing bracket so as to be able to extend and retract to the front and rear, and to be rotatable left and right, using a connecting pin slidably fitted in the guide slot to the front end of the connecting bracket. The left and right side edges of the bracket are formed as tapered locking edges in which the distance between the front ends is relatively narrow and the distance between the rear ends is gradually widened. , The left and right lock shafts which are engaged with the left and right locking edges of the connecting bracket to lock the squeegee with respect to the vehicle body when the vehicle body is operated in reverse are protruded.

(3) A tow bracket is vertically rotatably connected to a rear portion of the vehicle body of the washer by using a connecting shaft, and the squeegee is connected to the rear end of the tow bracket by the above-mentioned squeegee. And the traction bracket is configured to be rotatable integrally with the squeegee from the floor with the connection shaft as a fulcrum.

(4) An elongated guide hole is formed in the front and rear direction of the rear end of the towing bracket pivotally supported at the rear of the vehicle body so as to be vertically rotatable, and a connecting bracket is provided on the upper surface of the squeegee toward the vehicle body. Attaching, the front end of the connecting bracket is connected to the rear end of the towing bracket by a connecting pin slidably fitted in the guide long hole so as to be able to expand and contract in the front-rear direction. An actuator for raising and lowering, which is capable of pulling up and rotating the towing bracket from the floor together with the connection bracket and the squeegee, is mounted between the towing bracket and the vehicle body.

According to the means described in the above (1), when the floor washer is operated backward, the automatic locking mechanism locks the squeegee in a straight state with respect to the vehicle body. It is possible to reliably suck up the residual water behind by keeping it in a stable state.

According to the means described in the above (2), when the floor washer is operated backward, the connecting pin moves in the guide elongated hole, and the towing bracket on the vehicle body side moves in the direction of the connecting bracket on the squeegee side. Since the lock shafts protruding on the left and right sides of the towing bracket engage with the left and right tapered locking edges of the connecting bracket to lock the squeegee, the squeegee can be The squeegee does not tilt to the left and right, maintains a stable posture and can reliably absorb residual water behind, and when the vehicle body moves forward again, the connecting pin moves in the guide slot and is towed The bracket is slid in a direction away from the connecting bracket to disengage the locking edge by the lock shaft, so that the squeegee can be returned to the original state in which the squeegee can be freely rotated in the left-right lateral direction. .

According to the means described in the above (3), since the squeegee is attached to the towing bracket so as to be slidable in the front-rear direction, the towing bracket is connected to the floor by using the connecting shaft as a fulcrum. When the squeegee is pulled up and rotated above the surface, the squeegee slides so as to be drawn toward the vehicle body by its own weight, so that the interval width between the vehicle body and the squeegee is narrowed and the entire body is folded compactly,
It allows the squeegee to be pulled off the floor very easily with relatively little force.

According to the means described in (4) above, when the elevating / lowering actuator pulls up the towing bracket and pivots, the connecting pin moves in the guide elongated hole, and the connecting bracket on which the squeegee is mounted is moved. Because of its own weight, it can slide in the direction of the tow bracket and slide the squeegee toward the vehicle body, that is, in a state where the interval between the squeegee and the vehicle body is narrowed, so that each bracket and its connection part The squeegee can be pulled up from the floor and rotated with relatively little force without applying excessive force.

Further, according to the means described in (4) above, when the lifting / lowering actuator lowers and pivots the squeegee to the floor again, the towing bracket and the connecting bracket are extended in accordance with the forward movement of the vehicle body. Becomes
Because the distance between the body and the squeegee can be widened, even when the body is swiveled to clean the corners of the wall, the squeegee sufficiently covers the range of the swirl locus of the cleaning brush to ensure that wastewater is removed. Allows you to suck.

As described above, the above (1) to
The technical problem described above can be solved by the means described in (4), and the problem of the prior art can be solved.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a squeegee connecting device for a floor washer according to the present invention.

FIGS. 1 to 3 illustrate the construction of the squeegee connecting device according to the first and second aspects of the present invention. FIG. 1 shows a floor cleaning machine 1 according to the present invention. FIG. 2 is a partial cross-sectional side view illustrating the configuration, in which 1a is a vehicle body of the floor washer 1, 2 and 3 are running wheels, and 4 is a motor 4M.
5 is a rubber blade plate that guides the wastewater jumped up by the cleaning brush 4 to a wastewater tank 6 for recycling, 4a is a case body that covers the periphery of the cleaning brush 4,
Reference numeral 9 denotes a spray nozzle for supplying the cleaning brush with cleaning water sent through the water supply pipe 8a by the water supply pump 8.

Reference numeral 10 denotes a suction blower (not shown) sent through a vacuum hose 11 connected to the connection port 10a, which exerts a suction action on the floor surface.
The coupling device according to the present invention is a squeegee for sucking cleaning sewage on the floor surface and collecting the collected sewage on the sewage tank 7 side.
0 is connected to the rear side of the vehicle body 1a.

FIG. 2 is a perspective view for explaining a state of each part of the present invention when the vehicle body 1a is traveling forward, and FIG. 3 is a perspective view for explaining a state when the vehicle is traveling backward. In these drawings and FIG. 1 described above, reference numeral 12 denotes a connecting bracket which is mounted on the upper surface of the squeegee 10 in a state where the front end side extends in the direction of the vehicle body 1a, that is, in a state where it is extended forward. The tapered locking edges 12a, 12a are configured so that the root end side is wide and the distance between the root ends is gradually narrowed toward the front end side. A bolt-shaped connecting pin 16 to which is attached is attached.

Reference numeral 13 denotes a connecting plate 1 provided at a lower rear portion of the rear portion of the vehicle body 1a by using a connecting shaft 15 inserted through a shaft hole 13c at the end.
4, a connecting pin 16 of the connecting bracket 12 in a guide slot 13a formed in a longitudinal direction (front-rear direction) of a rear end portion of the towing bracket 13. Is movably fitted to the connecting bracket 12 to which the squeegee 10 is mounted.
Are connected to the towing bracket 13 on the vehicle body 1a side so as to be slidable back and forth (expandable and contractible) and horizontally rotatable in the left-right direction.

Reference numerals 17, 17 denote left and right lock shafts protruding on both side pieces 13b, 13b at the rear end of the tow bracket 13 which protrude in the left and right direction.
As shown in FIG. 3, the right and left tapered locking edges 12a, 12a of the connecting bracket 12 are provided when the towing bracket 13 slides in the lower direction of the connecting bracket 12 by the reverse operation of the vehicle body 1a. To lock the posture of the squeegee 10 in a straight state with respect to the vehicle body 1a, and to hold the squeegee 10 so as not to be tilted left and right. That makes it possible.

FIGS. 4 to 6 illustrate the structure of the present invention described in the third and fourth aspects of the present invention. FIG. 4 is a bottom view thereof, and FIG. FIG. 6 is a side view illustrating a state when the surface is washed, and FIG. 6 is a side view illustrating a state when the squeegee 10 is pulled up. In these drawings, 10R and 10R are attached to the left and right rear portions of the squeegee 10. The guide rollers 1X and 1X denote support plates attached to the lower rear portion of the vehicle body 1a via the mount 1b, and 13T denotes a support bracket integrally connected to the root end side of the towing bracket 13 described above.

Reference numeral 22 denotes the support bracket 13T.
13Ta is a support bracket 1 that connects the root end of the support bracket 1 to the lower end portion of the support plate 1X on the vehicle body 1a side so as to be vertically rotatable.
A fitting groove 20 for the connecting shaft 22 formed on the 3T has a mounting portion 20a at the root end on the upper side of the support plate 1X.
An actuator for lifting and lowering, which is mounted to be rotatable up and down using an operating shaft 21 mounted on the distal end of the rod 20R.
Is mounted in a mounting groove 13Tb provided on the front side of the support bracket 13T.

20S is the lifting actuator 20
When an ON / OFF switch (not shown) provided on the driver's seat of the vehicle body 1a is operated and an ON signal is sent through the lead wire 20S, the ascending / descending actuator 20 is turned on. When the squeegee 10 is pulled up and rotated from the bottom surface integrally with the brackets 12, 13, and 13T as shown in FIG. 6 by sucking the rod 20R and turning off the elevation actuator 20, Squeegee 1 with rod 20R protruding
0 is grounded on the floor as shown in FIG.

Further, in the present invention, since the connecting bracket 12 and the towing bracket 13 are configured to slide (expand and contract) in the longitudinal direction as described above, when the squeegee 10 comes into contact with the ground and the vehicle body 1a starts traveling forward. As shown in FIG. 5, the cleaning brush 4 is used to extend the squeegee 10 and the vehicle body 1a to the maximum extent, as shown in FIG.
The squeegee 10 is configured to sufficiently cover the range of the trajectory when the turning operation is performed.

Further, when the squeegee 10 is pulled up and rotated by the elevation actuator 20 as shown in FIG.
Since the connecting bracket 12 slides in the direction of the towing bracket 13 by its own weight of 0 to shorten the overall length, the entire squeegee 10 can be brought into a compact folded state drawn toward the vehicle body 1a. The lifting by the lifting actuator 20 can be performed in a stable state with a relatively small force.

FIG. 1 shows a boarding type using a roll-type cleaning brush 4 as the bottom surface cleaning machine 1, but this is an example of the embodiment, and the present invention is not limited to the above-described Japanese Patent Application Laid-Open No. H10-260572. As shown in FIGS. 1 and 2 of Japanese Patent Application Laid-Open No. 5-168580, the present invention can be applied to a self-propelled walking type floor cleaning machine in which an operator drives and operates a vehicle body provided with a disk-shaped cleaning brush while walking. Of course, the choice is arbitrary.

[0032]

As described above, according to the squeegee connecting apparatus for a floor washer according to the present invention, the squeegee is automatically locked in a straight state when the vehicle body is operated in reverse. The squeegee can be pulled up from the floor when the squeegee can be moved to another place by moving the vehicle backward and the remaining water remaining behind can be reliably absorbed by the squeegee. Since the squeegee does not move while being dragged, re-contamination of the cleaned floor surface can be prevented.

Further, according to the present invention, when the squeegee is pulled up, the squeegee can be pulled up toward the vehicle body and the whole squeegee can be pulled up in a compactly folded state. When the washing operation is performed with the squeegee grounded,
Extends the distance between the squeegee and the vehicle body when each of the connecting brackets is in the extended state, thus extending the operating range of the squeegee when turning the vehicle body, and has the advantage of completely covering the range of the path of the swirling cleaning brush. The squeegee is capable of fully exerting its squeegee suction capability when the body is run back and forth for cleaning or when turning to clean the corners of a wall or the like. .

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view illustrating a configuration of a floor washer implementing a squeegee connecting device according to the present invention.

FIG. 2 is a perspective view illustrating a configuration of a main part of the present invention described in claims 1 and 2;

FIG. 3 is a perspective view illustrating a configuration of a main part of the present invention when the vehicle body is moving backward.

FIG. 4 is a bottom view illustrating a configuration of a main part of the present invention described in claims 3 and 4;

FIG. 5 is a side view illustrating a configuration of a main part of the present invention when the vehicle body is moving forward.

FIG. 6 is a side view illustrating a configuration of a main part of the present invention when the squeegee is pulled up and rotated.

FIG. 7 is a configuration diagram illustrating a conventional floor cleaning machine.

FIG. 8 is a configuration diagram illustrating an inclined state of a squeegee when the conventional floor washer is operated backward.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor washing machine 1a Car body 4 Cleaning brush 10 Squeegee 11 Vacuum hose 12 Connection bracket 12a Tapered locking edge 13 Towing bracket 13a Guide slot 13T Support bracket 16 Connection pin 17 Lock shaft 20 Elevating actuator 22 Connection shaft

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 11/40 A47L 11/29

Claims (4)

(57) [Claims] 1. A floor cleaning machine according to claim 1, wherein the cleaning brush is rotated while receiving the supply of the cleaning water to clean the floor, and the squeegee sucks and collects the sewage after the cleaning. A squeegee is rotatably connected to the rear of the vehicle body via a tow bracket so that the squeegee is rotatable in the left and right directions.When the vehicle body is moved backward, the squeegee position is straight with respect to the vehicle body. A squeegee connecting device for a floor washer, comprising an automatic lock mechanism configured to unlock the squeegee and return the squeegee to a rotatable state when the vehicle is locked and the vehicle body is moved forward. 2. A long guide hole is formed in the front and rear direction of the rear end of the towing bracket connected to the rear part of the vehicle body, and a connection bracket is mounted on the upper surface of the squeegee toward the vehicle body, and this connection is performed. The connecting bracket is slidably fitted to the rear end of the towing bracket and connected to the rear end of the towing bracket using a connecting pin slidably fitted in the guide slot. The left and right side edges are relatively narrow at the front end side, and are formed as tapered locking edges configured with the rear end side interval relatively gradually wide, and on the left and right sides of the tow bracket 2. The vehicle according to claim 1, wherein left and right lock shafts are provided to engage the left and right locking edges of the connection bracket to lock the squeegee with respect to the vehicle body when the vehicle body moves backward.
The squeegee connecting device for a floor washer according to the above. 3. The floor cleaning machine according to claim 1, wherein the cleaning brush is rotated while receiving the supply of the cleaning water to clean the floor, and the squeegee sucks and collects the waste water after the cleaning. The squeegee is slidable in the front-rear direction with respect to the towing bracket on the rear end side of the towing bracket by connecting the towing bracket to the rear of the vehicle body using a connecting shaft. A squeegee connecting device for a floor washer, wherein the traction bracket is configured to be rotatable up from the floor surface integrally with the squeegee around the connecting shaft as a fulcrum. 4. A guide slot is formed in the front and rear direction of the rear end of a towing bracket rotatably supported at the rear of the vehicle body, and a connecting bracket is provided on the upper surface of the squeegee toward the vehicle body. The connecting bracket is connected to the rear end of the towing bracket by a connecting pin slidably fitted in the guide elongated hole so as to be capable of extending and retracting in the front-rear direction. 4. An actuator for raising and lowering, which is capable of lifting and rotating the towing bracket together with the connecting bracket and the squeegee from the floor side, between the towing bracket and the vehicle body. The squeegee connecting device for a floor washer according to the above.