JPH06316910A - Sweeper - Google Patents

Abstract

PURPOSE:To prevent a filter separating cut weeds from clogging, by sweeping fine weeds and dusts on the filter separating cut weeds by means of a driven cleaning mechanism, in a sweeper collecting cut weeds. CONSTITUTION:Cut weeds on the ground are scrapped up by a driving rotary brush 7. The scraped weeds are sucked by a blower 9 through a duct 8 and transferred. A cylindrical filter 16 is horizontally arranged in the transfer path W of the weeds to separate the weeds from the suction air. That is, the cut weeds are forced to collide with the filter 16 and drop in a collector vessel 10. On the other hand, the suction air passing through the filter 16 is discharged from the exhaust part through the bent exhausting way passing through a net 13 arranged on the collector vessel 10 from the opening of the filter. A brush 19 is forced to contact the filter 16 rotating around the rotary axis P. Simultaneously, the cut weeds and dust stuck on the peripheral face of filter 16 are scrapped off in order.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sweeper for collecting grass cut by a lawn mower or the like.

[0002]

2. Description of the Related Art A conventional sweeper is disclosed in, for example, Japanese Patent Laid-Open No.
As shown in Japanese Patent No. 314647, it is general that the blower attached to the mower side transfers the grass cut by the mower to the grass collection container by wind power transfer. Is equipped with an air exhaust unit for exhausting the exhaust air from the transfer of wind power.

[0003]

In the above structure, the air exhaust section is equipped with a filter for exhausting only the transport air. If the mesh of this filter is made fine, it is good that fine cutting grass can be collected without escape, but it tends to become clogged. Conversely, if the mesh is made large, it is difficult to clog, but fine cutting grass It tends to be discharged. From the viewpoint of collecting grass, it is desirable to make the mesh of the filter fine, but in reality, the clogging is so severe that the cleaning or replacement of the filter is early, which results in poor work efficiency. An object of the present invention is to realize a sweeper which has a fine mesh and prevents clogging at an early stage and has an excellent recovery performance and improved work efficiency.

[0004]

In order to achieve the above-mentioned object, the present invention is designed to suck a cut grass collecting section for picking up and transferring the cut grass, and a cut grass sent from the cut grass collecting section together with suction wind. A drive cleaning mechanism that includes a separation unit that separates the wind discharged from the exhaust unit and the grass that is collected in the grass collection container, and that scrapes off and cleans the grass that has adhered to the filter for separating grass in the separation unit. It is characterized by comprising a sweeper.

[0005]

[Function] In other words, the filter cleaning device actively removes the substances adhering to the filter, which makes it possible to make the mesh finer and prevent the discharge of fine grass and dust, and also to prevent clogging. It will be difficult. Since this cleaning action is performed mechanically, it is possible to maintain the filter in a non-clogging state during the mowing work, and it is possible to lengthen the continuous operation time of the collecting work.

[0006]

As described above, a sweeper having an improved work efficiency capable of continuing the collecting work for a long time without being clogged while being able to exhibit the excellent collecting performance of collecting grass and dust without leaks with a filter having a fine mesh as much as possible. Could be provided.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a self-propelled sweeper, in which 1 is an engine, 2 is a front wheel, 3 is a rear wheel, 4 is a control section, and 5 is a traveling body. This sweeper sucks up the cut grass that has been cut by a lawn mower and scattered on the ground and collects it in the grass container 10.

This sweeper discharges suction air from an air exhaust unit 12 for the grass collecting portion a for scraping and sucking and transferring the grass, and the cut grass sent together with the suction air from the grass collecting portion a. A drive cleaning mechanism that includes a separating portion b that separates the blast air and the grass that is collected in the grass container 10 and that scrapes off the grass and dust attached to the filter 16 for separating the grass in the separating portion b to clean the grass. 11 is provided.

The cut grass collecting section a includes a raking mechanism 6 for picking up the cut grass on the ground by a driving rotary brush 7, and a blower 9 for sucking and transferring the cut grass through a duct 8.
It consists of and. As shown in FIGS. 1 and 2, the separating part b is configured by horizontally arranging a cylindrical filter 16 in a transport path W for cutting grass, and the cutting grass collides with the filter 16 and inside the grass container 10. The suctioned air passes through the filter 16 and is discharged from the left and right openings 16a, 16a through the curved discharge path that passes through the mesh 13 arranged in the upper part of the container to be discharged from the air discharge part 12. As shown in FIG. 2, in order to effectively utilize the filtration area of the filter 16,
A partition wall 17 is provided which forms a circumferential filtration chamber 14 along the outer circumference of and a pair of left and right ring-shaped ventilation chambers 15.

The drive cleaning mechanism 11 includes a drive unit 18
1 drives the filter 16 to rotate in the counterclockwise direction in FIG. 1 about the rotation axis P in the left-right direction, and the brush 19 acting on the outer peripheral surface of the filter 16 is attached to the grass container 1
It is fixed to the ceiling surface of 0. In other words, the brush 19 sequentially scrapes off the grass and dust attached to the outer peripheral surface of the filter 16 as the filter 16 rotates, thereby preventing clogging. In the figure, the thick hollow arrows indicate the paths of the suction wind and the suction air by the cut grass, the thin hollow arrows indicate the paths of the suction wind, and the broken arrows indicate the paths of the cut grass.

[Other Embodiments] The filter 16 is fixedly arranged, and the drive unit 18 for moving the brush 19 is provided as the drive cleaning mechanism 11, and the cleaning wind in the direction opposite to the suction wind is periodically supplied to the filter 16. It is also possible to use an air blow means that acts from the back side to prevent clogging.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is an overall side view of a partially cutout showing a structure of a self-propelled sweeper.

FIG. 2 is a sectional view showing a structure of a filter portion.

[Explanation of symbols]

 10 grass collection container 11 compression mechanism 12 air exhaust section 16 filter a cut grass collection section b separation section

Claims (1)

[Claims] 1. A cut grass collecting portion (a) for picking up and sucking and transferring cut grass, and cut grass which is sent together with suction wind from the cut grass collecting portion (a). The separating part (b) for separating the exhaust air discharged from the container and the grass collected in the grass container (10) is provided, and the separating part (b) is also provided.
Drive cleaning mechanism (11) for scraping off and cleaning the grass cut on the filter (16) for grass separation in
A sweeper equipped with.