JP3632370B2 - Filter dust remover for floor cleaning vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filter dust removing device in a floor cleaning vehicle that performs a floor cleaning operation by traveling in a factory, a station, a road, or the like.
[0002]
[Prior art]
In a floor cleaning vehicle that rotates the circular main brush to sweep the trash on the roadway into the dust box, the blower blows away the polluted air that contains fine floating dust that rises as the trash is swept up. The air is sucked into the flow passage, filtered by a filter disposed in the air flow passage, and then discharged to the outside from the air discharge port.
However, if dust adheres to and accumulates on the filter due to repeated filtration, the filtration efficiency of the filter will decrease, so the filter will be vibrated regularly or as needed to prevent a reduction in filtration efficiency. 2. Description of the Related Art A filter dust removing device has been proposed in which dust attached to a filter is shaken off by applying the filter. An example of a filter dust removing device in such a floor cleaning vehicle is disclosed in Japanese Patent Application Laid-Open No. 3-146109.
[0003]
[Problems to be solved by the invention]
The filter dust removing device described in the above publication has a vibration motor attached to a filter cover of a filter box, the filter cover is vibrated by driving the vibration motor, and the vibration is blocked in a filter arranged in the filter box. It is comprised so that it may transmit via a transmission member. However, according to the above configuration, since the block-shaped vibration transmission member is coupled to the central portion of the filter, the vibration transmission concentrates on the central portion of the filter and the central portion vibrates strongly, but the vibration of the peripheral portion is weak. There was a problem that the dust removal effect was low.
[0004]
In view of the above problems, an object of the present invention is to provide a filter dust removing device in a floor cleaning vehicle that enhances the dust removing effect by vibrating the entire filter evenly.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is configured as follows.
That is, the invention of claim 1
A filter disposed in an air flow passage through which polluted air flows;
A filter cover arranged in a facing manner at a predetermined interval so as to cover one surface of the filter;
A shaker motor attached to the filter cover and vibrating the filter cover;
In the dust removing device for a filter in a floor cleaning vehicle provided with a vibration transmitting member that is disposed between the filter cover and the filter and transmits the vibration of the filter cover to the filter,
The vibration transmission member includes a vibration input unit coupled to a maximum vibration part of the filter cover, and a vibration output unit that comes into contact with one surface of the filter over a wide range including the vicinity of a peripheral portion , and the vibration input unit. The portion takes out vibration of the filter cover driven by the shaker motor, and the vibration output portion taps the filter by the vibration to vibrate the filter.
It is a dust removal device for a filter in a floor cleaning vehicle.
[0006]
According to the thus constructed invention of claim 1 as described above, at the time of driving movement of Shekamota, filter cover is vibrated by the Shekamota, its vibration is transmitted to the filter via the vibration transmission member. That is, when the vibration output unit in contact with the filter strikes the filter, the filter vibrates, and dust attached to the filter is shaken off. In this case, the vibration of the maximum vibration part of the filter cover is taken out by the vibration input part of the vibration transmission member, and the filter is hit by the vibration output part that comes into contact with the filter over a wide range including the vicinity of the peripheral part. is therefore, it becomes possible to uniformly vibrate the entirety uniformly in the filter, it improves the detachment effect of dust.
[0007]
The invention of claim 2
The vibration transmitting member is composed of a leaf spring,
The vibration input part is formed from a flat middle-high part,
An elastically deformable flexible portion comprising a slope portion extending symmetrically and obliquely downward from the vibration input portion is formed ,
The vibration output portion is formed from a flat portion extending horizontally from each flexible portion.
A dust removing device for a filter in a floor cleaning vehicle according to claim 1.
In such a configuration, when the leaf spring that is a vibration transmitting member vibrates, the filter is subjected to random movement in addition to normal vibration, and movement due to elastic deformation of the flexible portion formed of the slope portion. As a result , the dust detachment effect is further improved.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to FIGS. FIG. 1 is a side view schematically showing a floor cleaning vehicle. The floor cleaning vehicle sweeps the dust at the corner of the traveling floor to the center by the side brush 2 provided at the front of the machine base 1, and the dust at the center of the floor by the main brush 3 provided at the bottom center. It is swept up and collected in the dust box 4 arranged in front of it.
[0009]
A filter box 5 constituting an air flow path through which polluted air flows is provided at the rear of the machine base 1, and the filter box 5 communicates with the rear of the main brush 3 through a suction port 6 formed in the lower part. Yes. A panel-like filter 7 is disposed in an oblique manner in the filter box 5, and a filter cover is disposed in the filter box 5 so as to face each other at a predetermined interval so as to cover one surface (air outflow side) of the filter 7. 8 is provided. The filter cover 8 has an outlet 9 for purified air, and the outlet 9 communicates with the blower chamber 11 via a duct 10.
[0010]
A blower 12 is provided in the blower chamber 11. Due to the suction action of the blower 12, polluted air containing fine floating dust generated by the sweeping of the main brush 3 passes through the suction port 6 to the filter box. 5 is flowed into. The polluted air is purified by the filtering action by the filter 7, then flows downstream from the blower chamber 11, and is discharged from the exhaust port 13 to the outside of the machine.
[0011]
FIG. 2 shows a dust removing device for the filter box 5 and the filter 7. The lower surface of the filter box 5 is opened, and a dust pan 14 for collecting dust is disposed below the filter box 5. The dust pan 14 is detachably supported by a pan support device (not shown) for disposal of dust. Further, an opening for filter replacement is provided on the rear surface of the filter box 5, and the opening can be opened and closed by a door 15 having a lower end portion as a rotation fulcrum. The door 15 is always in a closed position indicated by a solid line by a screw 16. It is fixed to.
[0012]
The filter 7 has a structure in which a wave-shaped filtering portion 18 is disposed in a square annular case 17 made of an iron plate that opens up and down, and the outer surface of the case 17 of the filter 7 is attached to a rectangular support frame 19 via a rubber seal 20. It is supported. The lower end of the support frame 19 is rotatably supported by the bracket 21, and a pin 23 protruding from a protrusion 22 provided on the lower surface near the upper portion of the support frame 19 is provided in the guide groove of the fixing member 24 provided on the inner surface of the door 15. 25, and is always supported in an oblique use position. When the door 15 is opened, the support frame 19 rotates together with the filter 7 with the lower end portion as a fulcrum as indicated by the phantom line, and the upper half portion projects outward from the opening.
[0013]
The filter 7 at the use position has an upper surface outer periphery abutted against the inner surface of the filter cover 8 via a rubber seal 26, and prevents contaminated air from leaking downstream. A shaker motor 27 for generating vibration is fixed to the substantially central portion of the outer surface of the filter cover 8. The shaker motor 27 has an eccentric weight 29 on the output shaft 28, and vibration is generated by the rotation of the eccentric weight 29. Such vibration of the shaker motor 27 is transmitted to the filter cover 8, and the vibration of the filter cover 8 is further passed through the leaf spring 30 as a vibration transmitting member interposed between the filter cover 8 and the filter 7. To be communicated to.
[0014]
As shown in FIG. 3 (a), the leaf spring 30 includes a flat rectangular medium-high part 30a, a slope part 30b that extends symmetrically downward from two sides of the medium-high part 30a, It is formed in a shape having a flat surface portion 30c extending horizontally from the slope portion 30b. Alternatively, as shown in FIG. 3 (b), a flat rectangular middle-high portion 30a, a slope portion 30b extending obliquely downward from four sides of the middle-high portion 30a, and a horizontal shape from the slope portion 30b. It forms in the shape provided with the planar part 30c extended.
[0015]
The leaf spring 30 is coupled to the maximum vibration portion (substantially central portion) of which the middle-high portion 30 a vibrates (amplifies) the filter cover 8 most greatly, and the flat portion 30 c extends over a wide range including the vicinity of the peripheral portion on the upper surface of the filter 7. It abuts against the surface. In the case of FIG. 3A, the flat portion 30c can be expanded in the width direction as indicated by a virtual line, if necessary, to further expand the contact surface with the filter 7. In this case, the middle-high part 30a of the leaf spring 30 constitutes a vibration input part, the flat part 30c constitutes a vibration output part, and the slope part 30b constitutes a flexible part that can be elastically deformed.
[0016]
The dust removing device for the filter 7 according to the present embodiment is configured as described above. When dust adheres to the filter portion 18 of the filter 7 due to repeated cleaning operations, the shaker motor is used to shake off the dust. 27 is driven at any time or periodically. When the shaker motor 27 is driven, the filter cover 8 and the leaf spring 30 coupled to the filter cover 8 vibrate as a unit, and the vibration is caused by the flat portion 30c of the leaf spring 30 hitting the upper surface of the filter 7. 7 is transmitted. Therefore, the dust adhering to the filter part 18 of the filter 7 is shaken off and dropped into the dust pan 14.
[0017]
In this case, since the middle and high portions 30 a of the leaf spring 30 are coupled to the most vibrated portion of the filter cover 8, large vibration (amplitude) is input to the leaf spring 30. In addition, since the plurality of flat portions 30c of the leaf spring 30 are in contact with the upper surface of the filter 7 over a wide range, the filter 7 is evenly vibrated evenly by being hit by the flat portion 30c. .
Therefore, the problem that the effect of removing the dust at the peripheral edge of the filter 7 is low, which occurs in the conventional system in which the vibration of the filter cover 8 is intensively transmitted to the central portion of the filter 7, is solved. The withdrawal effect can be improved.
[0018]
Further, the slope portion 30b of the leaf spring 30 is elastically deformed itself while transmitting vibrations. Accordingly, in addition to the above-described normal vibration, a motion due to elastic deformation of the inclined surface portion 30b is added, so that the filter 7 exhibits a random motion, and as a result, the effect of separating dust from the filtering portion 18 is further improved. Thus, clogging of the filtration unit 18 can be avoided and the filtration function of the filter 7 can be maintained and guaranteed over a long period of time.
Further, when the dust is dropped as described above, the rubber seal 26 interposed between the filter 7 and the filter cover 8 maintains the airtightness between the two members due to its elastic deformation, and the dust is on the downstream side (the filter cover 8 side). ).
[0019]
In the present embodiment, the vibration transmitting member is configured by the leaf spring 30, but a rigid plate material may be used instead of the leaf spring 30, and the shape thereof is also limited to that shown in FIG. However, the filter cover 8 may have any shape that can efficiently transmit the vibration of the filter cover 8 to the peripheral edge side of the filter 7 and vibrate the entire filter 7 evenly.
[0020]
【The invention's effect】
As described above in detail, according to the present invention, in the filter dust removing device in the floor cleaning vehicle, the entire filter can be evenly vibrated to improve the dust detachment effect, thereby avoiding clogging of the filter. Thus, the filtration function can be maintained and guaranteed over a long period of time.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a floor cleaning vehicle.
FIG. 2 is a cross-sectional view showing a dust removing device for a filter.
FIGS. 3A and 3B are explanatory views showing a vibration transmitting member, wherein FIG. 3A shows a leaf spring provided with a vibration output portion in two directions, and FIG. 3B shows a leaf spring provided with a vibration output portion in four directions.
[Explanation of symbols]
5 ... Filter box 7 ... Filter 8 ... Filter cover 27 ... Shaker motor 30 ... Leaf spring 30a ... Middle-high part (vibration input part)
30b ... slope (flexible part)
30c ... plane part (vibration output part)

Claims (2)

A filter disposed in an air flow passage through which polluted air flows;
A filter cover arranged in a facing manner at a predetermined interval so as to cover one surface of the filter;
A shaker motor attached to the filter cover and vibrating the filter cover;
In the dust removing device for a filter in a floor cleaning vehicle provided with a vibration transmitting member that is disposed between the filter cover and the filter and transmits the vibration of the filter cover to the filter,
The vibration transmission member includes a vibration input unit coupled to a maximum vibration part of the filter cover, and a vibration output unit that comes into contact with one surface of the filter over a wide range including the vicinity of a peripheral portion , and the vibration input unit. The filter is configured to vibrate the filter by extracting vibrations of the filter cover driven by the shaker motor, and the vibration output unit hitting the filter by the vibrations . Dust removal device. The vibration transmitting member is composed of a leaf spring,
The vibration input part is formed from a flat middle-high part,
An elastically deformable flexible portion comprising a slope portion extending symmetrically and obliquely downward from the vibration input portion is formed ,
The filter dust removing device for a floor cleaning vehicle according to claim 1 , wherein the vibration output portion is formed of a flat portion extending horizontally from each of the flexible portions .

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