JP3767133B2 - Floor cleaning car - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a floor cleaning vehicle that cleans floor surfaces, road surfaces, and the like.
[0002]
[Prior art]
The floor cleaning vehicle is a vehicle that can collect and clean the dust on the floor surface after traveling by running it on the floor surface, road surface or the like (hereinafter referred to as the floor surface).
As shown in FIGS. 4 and 5 to be described later, the floor cleaning vehicle includes a dust box 2 for collecting dust and a main brush 3 that sweeps up dust 88 on the floor in the dust box 2 in the vehicle 10. Is. Further, the vehicle 10 is provided with a side brush 4 that sweeps dust into the cleaning area of the main brush 3 in front of the vehicle 10.
[0003]
This side brush 4 makes the brush bristles 40 planted on a disk-shaped substrate abut against the floor surface 8 and rotates it on a substantially horizontal plane, so that the dust on the floor surface 8 is moved to the front center portion of the vehicle 10. It is configured to sweep up. Therefore, the side brush 4 is rotatably disposed at the tip of the arm 5 that extends forward from the side surface of the vehicle 10.
[0004]
Specifically, as shown in FIG. 6, a gear box 52 connected to a belt 51 driven by a motor (not shown) is built in the tip of the arm 5, and the rotating shaft 9 faces downward from the gear box 52. Is arranged. The rotating shaft 9 is provided with a plurality of through holes 91 for connection.
[0005]
On the other hand, as the side brush 4, a brush having a pipe-shaped bracket 94 provided with a connecting through hole 940 is used.
The rotating shaft 9 is inserted into the bracket 94 of the side brush 4 and the bolt 98 is passed through the bracket 94 and the rotating shaft 9 and tightened with a nut 99 to fix them.
Further, the height adjustment of the side brush 4 is performed only by selecting the through hole 91 of the rotating shaft 9.
[0006]
The main brush 3 is a cylindrical brush having brush hairs 30 that are radially arranged on the outer surface of the core rod. The main brush 3 is arranged such that its rotation axis is oriented in a direction perpendicular to the forward direction of the vehicle 10 and is configured to sweep up dust on the floor surface into the dust box 2 by rotation.
[0007]
When the floor cleaning vehicle is driven, dust on the floor is first collected in the cleaning area at the front center of the vehicle 10 by the side brush 4, and then the main brush is moved forward by the vehicle 10. 3 collects dust in the dust box 2.
[0008]
[Problems to be solved]
However, the conventional floor cleaning vehicle has the following problems.
That is, if there are irregularities on the floor surface, road surface, etc. to be cleaned, there may be cases where uncleaned parts etc. occur and sufficient cleaning cannot be performed.
Specifically, as shown in FIG. 6, when the side brush 4 rides on the convex portion 81 on the floor surface, the contact pressure between the tip of the brush hair 40 and the floor surface changes. Thereby, the bristle 40 is greatly deformed. When this large deformation occurs in the brush bristle 40, the subsequent restoration of the brush bristle 40 causes a delay in the brush rotation speed, and the action of sweeping dust is greatly reduced.
[0009]
Further, when the side brush 4 moves from the convex portion 81 to the flat portion or from the flat portion to the concave portion, the contact between the side brush 4 and the floor surface is not sufficiently performed, and dust on the floor surface remains as it is. Also occurs.
Further, when the side brush 4 is repeatedly used in a state where the large deformation of the brush bristles 40 is repeated, the brush bristles 40 cannot be restored to the original state while being deformed, and the life of the side brush 4 becomes very short. .
[0010]
The present invention has been made in view of the above-described conventional problems, and can stably perform a cleaning operation without leaving a sweep even on an uneven floor surface or the like, and can extend the life of a side brush. It is intended to provide a floor cleaning vehicle that can.
[0011]
[Means for solving problems]
The invention of claim 1 provides a vehicle with a dust box for collecting dust, a main brush that sweeps up dust on the floor in the dust box, and a side brush that sweeps dust into the cleaning area of the main brush. In the floor cleaning vehicle
The side brush is attached to the tip of an arm that can swing in the vertical direction.
In the floor cleaning vehicle, a wheel for regulating the height of the side brush and the floor surface is rotatably disposed on the grounding surface side of the side brush.
[0012]
The most notable aspect of the present invention is that the side brush is attached to the tip of an arm disposed so as to be swingable in the vertical direction, and the wheel is attached to the grounding surface side of the side brush. It is arranged.
[0013]
The arm can be swung vertically, for example, by arranging the rear end of the arm so as to be rotatable with respect to the vehicle. Further, it is preferable that the arm is appropriately biased downward by its own weight or a spring described later.
The side brush is provided with the wheel. This wheel can be provided directly on the side brush, or can be provided at the tip of the arm by attaching the rotating shaft of the arm to which the side brush is attached.
[0014]
Next, the operation of the present invention will be described.
In the floor cleaning vehicle of the present invention, the side brush is attached to the tip of an arm arranged to be swingable in the vertical direction, and the wheel is arranged on the grounding surface side of the side brush. It is. Therefore, even when the floor cleaning vehicle is driven on a floor surface having an uneven surface, the ground contact state between the side brush and the floor surface can be maintained in a good state.
[0015]
That is, the wheel is provided on the side surface of the side brush. Therefore, the side brush can always maintain a predetermined distance from the floor surface as long as its wheels are grounded to the floor surface.
The arm for holding the side brush is disposed so as to be swingable in the vertical direction. Therefore, when the floor surface to be cleaned has an uneven shape, the wheel can be grounded along the uneven shape of the floor surface while the arm is swung vertically.
[0016]
Therefore, in the present invention, even when cleaning a floor surface having irregularities, the grounding state of the side brush can be always maintained in a good state, and the sweeping operation can be performed well. Furthermore, large deformation of the brush hair due to an excessive increase in the ground pressure on the side brush can also be suppressed.
[0017]
Therefore, the floor cleaning vehicle of the present invention can perform stable cleaning without generating uncleaned parts even when cleaning uneven floors, etc., and extends the life of the side brush. be able to.
[0018]
Next, as in a second aspect of the invention, it is preferable that the wheel provided on the side brush has an offset between a turning shaft and a rotating shaft of the wheel. That is, it is preferable that the rotation axis of the wheel is provided at a position shifted from the turning axis of the wheel.
In this case, when the direction of the floor cleaning vehicle is changed, the direction change of the wheel can be smoothly performed.
[0019]
According to a third aspect of the present invention, the arm is preferably provided with a spring that biases the arm toward the floor surface. In this case, the side brush can be lowered with high responsiveness when the side brush reaches the flat part from the convex part of the floor or from the flat part to the concave part, and the grounding state of the side brush is more reliably improved. Can be maintained in a stable state.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment Example A floor cleaning vehicle according to an example embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 4 and 5, the floor cleaning vehicle 1 of this example includes a dust box 2 for collecting dust 88, a main brush 3 that sweeps up dust on the floor in the dust box 2, and a main brush 3. The vehicle 10 is provided with a side brush 4 for sweeping dust into the cleaning area.
[0021]
And the side brush 4 is attached to the front-end | tip of the arm 5 arrange | positioned so that rocking | fluctuation to an up-down direction was possible. Further, as shown in FIG. 1, wheels 6 for regulating the height between the side brush 4 and the floor surface are disposed on the grounding surface side of the side brush 4 so as to be rotatable.
This will be described in detail below.
[0022]
As shown in FIG. 1, the arm 5 of this example is disposed so as to be pivotable in the vertical direction about an arm fulcrum 50 with respect to the vehicle 10. As a result, the arm 5 can swing in the vertical direction.
Further, as shown in FIG. 1, the arm 5 is provided with a spring 59 for urging the arm 5 toward the floor surface. Specifically, one end 591 of the spring 59 is fixed below the arm fulcrum 50 of the vehicle 10 and the other end 592 is fixed to the arm 5.
[0023]
Further, as shown in FIG. 1, the rotating shaft 51 provided on the arm 5 is longer than the conventional one, and a bolt hole 511 for fixing the side brush 4 and a plurality of bolt holes 512 for fixing the wheel 6. have.
On the other hand, as shown in FIGS. 1 and 2, the side brush 4 is formed by planting brush hairs 40 in a donut shape downward from the disk-shaped flocking plate 41, and on the back surface of the flocking plate 41, there is an arm 5. A pipe-shaped bracket 42 for connection to the rotary shaft 51 is provided.
[0024]
Further, the bracket of the side brush 4 is provided with a bolt hole 422 through which a bolt 71 for fixing to the rotating shaft is passed.
Further, a through hole 410 communicating with the inner hole 420 of the bracket 42 is provided at the center of the flocking plate 41.
[0025]
As shown in FIG. 1, the rotary shaft 51 is inserted through the inner hole 420 of the bracket 42 of the side brush 4 and the through hole 410 of the flocking plate 41. Then, the bolt hole 422 of the bracket 42 and the bolt hole 511 of the rotating shaft 51 are passed through, the bolt 71 is passed through, and the side brush 4 and the rotating shaft 51 are connected by being fastened and fixed by the nut 72.
[0026]
Further, as shown in FIG. 1, the wheel 6 is disposed on the rotating shaft 51 protruding to the grounding surface side of the side brush 4. The wheel 6 has a so-called caster-like structure, and the turning shaft 61 and the rotation shaft 62 of the wheel 6 are offset.
Further, the turning shaft 62 of the wheel 6 is disposed on the wheel bracket 65 so as to be rotatable via a bearing 63.
[0027]
The wheel bracket 65 has a pipe shape having an inner hole in the upper portion thereof, and the tip of the rotating shaft 51 is inserted into the pipe shape. A bolt 73 is inserted through a bolt hole 652 provided in the wheel bracket 65 and a bolt hole 512 provided in the rotary shaft, and is fastened and fixed by a nut 74.
In this example, the wheels 6 are arranged on the grounding surface side of the side brush 4 in this way. The other structures of the vehicle 10 and the like are the same as the conventional structure.
[0028]
Next, the operation of this example will be described.
In the floor cleaning vehicle 1 of the present example, the side brush 4 is attached to the tip of an arm 5 disposed so as to be swingable in the vertical direction. 6 is arranged. Therefore, even when the floor cleaning vehicle 1 is run on a floor surface having an uneven surface, the ground contact state between the side brush 4 and the floor surface can be maintained in a good state.
[0029]
For example, as shown in FIG. 3A, when the floor cleaning vehicle 1 is traveling on a flat floor surface 80, the side brush 4 and the floor surface 80 are moved by grounding the wheels 6 to travel. It is possible to maintain a good grounding state.
[0030]
Further, as shown in FIG. 3B, when the floor brush 1 moves forward and the side brush 4 reaches the recess 82 that is recessed, the wheel 6 is grounded along the recess 82. Trying to proceed. Therefore, the side brush 4 is lowered along with this, and the arm 5 swings downward so as not to prevent the lowering. Therefore, as shown in the figure, the side brush 4 can maintain a good grounding state even if the floor surface is the recess 82.
[0031]
In this example, the spring 59 is disposed on the arm 5. Therefore, when it suddenly reaches the recess 82 from the flat portion, the urging force of the spring 59 causes the arm 5 and the side brush 4 to be pushed down with high responsiveness.
[0032]
Further, as shown in FIG. 3C, when the floor cleaning vehicle 1 moves forward and the side brush 4 approaches the convex portion 81 that is raised in a convex shape, the wheel 6 moves along the convex portion 81. Try to go grounded. Therefore, the side brush 4 rises along with this, and the arm 5 swings upward so as not to prevent the rise. Therefore, as shown in the figure, the side brush 4 can maintain a good grounding state even if the floor surface is the convex 81.
[0033]
Thus, since the side brush 4 is provided with the wheel 6 on the grounding surface side, as long as the wheel 6 is grounded to the floor surface, the distance from the floor surface is always maintained at a predetermined distance. Can do.
Further, since the arm 5 holding the side brush 4 is disposed so as to be swingable in the vertical direction, as described above, even when the floor surface has an uneven shape, The contact state between the wheel and the floor can always be maintained.
[0034]
Therefore, in this example, even when cleaning the uneven floor, the ground contact state of the side brush 4 can always be maintained in a good state, and the sweeping operation can be performed well. Moreover, the large deformation | transformation of the bristle 40 by the raise of the excessive grounding pressure to the side brush 4 can also be suppressed.
[0035]
Therefore, the floor cleaning vehicle 1 can perform stable cleaning without generating uncleaned parts even when cleaning uneven floors, etc., and extend the life of the side brush 4. Can do.
[0036]
【The invention's effect】
As described above, according to the present invention, even on uneven floors and the like, floor cleaning can be performed stably without leaving any sweep and the life of the side brush can be extended. Car can be provided.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing the structure of an arm and a side brush in an embodiment.
FIG. 2 is a bottom view of the side brush in the embodiment.
FIG. 3 is an explanatory diagram showing a grounding state of a side brush on (a) a flat floor, (b) a recess, and (c) a protrusion in the embodiment.
FIG. 4 is an explanatory view showing the appearance of a floor cleaning vehicle in the embodiment.
FIG. 5 is an explanatory view showing a partially cutaway section of the floor cleaning vehicle in the embodiment.
FIG. 6 is an explanatory diagram showing a problem with a side brush in a conventional example.
[Explanation of symbols]
1. . . Floor cleaning car,
10. . . vehicle,
2. . . Dust box,
3. . . Main brush,
4). . . Side brush,
5. . . arm,
51. . . Axis of rotation,
59. . . spring,
6). . . Wheel,

Claims (3)

In a floor cleaning vehicle in which a vehicle is provided with a dust box for collecting dust, a main brush that sweeps up dust on the floor in the dust box, and a side brush that sweeps dust into the cleaning area of the main brush. ,
The side brush is attached to the tip of an arm that can swing in the vertical direction.
A floor cleaning vehicle characterized in that a wheel for regulating the height of the side brush and the floor surface is rotatably disposed on the grounding surface side of the side brush. The floor cleaning vehicle according to claim 1, wherein the wheel provided on the side brush has an offset between a turning shaft and a rotation shaft of the wheel. The floor cleaning vehicle according to claim 1 or 2, wherein the arm is provided with a spring for biasing the arm toward the floor.

Images