JPS6346503Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a snow shovel for removing snow by scattering snow using rotary blades rotated by an engine.

In general, this type of snow shovel has a gear case fixed to the front end of an operating rod with an engine at the rear end, and rotary blades that are rotated by the engine's drive are installed on both sides of the gear case. A rear cover made of synthetic resin is provided to cover the rear of the wing and guide the snow shoveled by the rotary blade forward and upward. However, since the rear cover is made of synthetic resin, snow does not stick to it, but the central gear case is made of aluminum alloy for strength, so snow tends to stick to it, which interferes with the rotation of the rotor blades.

The present invention aims to prevent snow from adhering to the gear case, which is made of aluminum alloy and is prone to snow, by surrounding it with a central cover made of synthetic resin, thereby allowing the rotating blades to rotate smoothly.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a snow removal section, which is connected to an engine 5 via an operating rod 3. A transmission shaft 7 for transmitting the power of the engine 5 to the snow removing section 1 is provided to penetrate inside the operating rod 3 . 11 is a grip portion fixedly provided on the operating rod 3; 13 is the operating rod 3;
This is a grip provided at the end of the handle 15 that is fixed to the handle. The snow removal section 1 is constructed as follows. That is, 17 is a gear case, and one end thereof is provided with an engaging portion 19 that detachably engages with the end of the operating rod 3. Reference numeral 21 denotes a bolt that fixes the engaging portion 9 to the operating rod 3 via a fixing band 23 that fits around the outer periphery of a notch (not shown) formed by cutting out the end of the engaging portion 19 in the axial direction. Reference numeral 25 denotes a bevel gear pivotally supported by a bearing 27 inside the gear case 17, and 29 an engagement body that screws into the boss portion 31 of the bevel gear 25, and holds the bearing 27 between the bevel gear 25 and the bevel gear 25 in the axial direction. The engaging body 29 is removably engaged with a square shaft portion 33 at the end of the transmission shaft 7. 35 horizontally to the gear case 17,
The rotating shaft is rotatably supported by bearings 37, 37, and a bevel gear 39 that engages with the bevel gear 25 is fixed thereto. 41 is a rotor blade,
Three wing plates 47, 47, 47 are fixed between two circular side plates 43, 45 facing each other on the inner and outer sides, and the side plate 43 is attached to an engaging body 49 that is screwed to the end of the rotating shaft 35. The side plate 45 on the opposite side is engaged with the bearing 51,
The rotor blade 4 is fixed by the bolt 55 through the spacer 53.
It is rotatably supported on the outer side plate of a rear cover 57 made of synthetic resin that covers the rear of 1 and coaxially with the rotating shaft 35 . The engaging body 49 is provided with three radial engaging portions 59 , 59 , 59 , and is engaged with an engaging hole (not shown) of the same shape provided in the side plate 43 . The rear cover 57 is formed in a shape that guides snow scraped up by the vanes 47 so that it scatters upward and forward. Reference numeral 61 denotes an engagement hole provided in the rear cover 57, into which the gear case 17 is engaged, and the rear cover 57 is fixed to the gear case 17 by bolts 65, 65 screwed into a flange portion 63 provided in the gear case 17. are doing. 67 is gear case 1
A central cover surrounding the rear cover 57 includes a base 69 made of synthetic resin integrally with the rear cover 57, and a lid 73 made of synthetic resin coupled to the base 69 with bolts 71, 71. The lid portion 73 is formed in a convex shape with a front surface inclined toward both sides. Further, numeral 75 is a snow scraping plate provided on the lower surface of the rear cover 57, and is used to scrape snow off the ground.

In the above configuration, the power of the engine 5 is transmitted through the transmission shaft 7, the bevel gear 25, the bevel gear 39,
Via the rotating shaft 35, the rotary blades 41, 41 on both sides are rotated and driven in the direction of arrow B in FIG. When the operator grasps the grips 11 and 13 with both hands and pushes the snow removal section 1 forward with the snow removal plate 75 in contact with the ground, the snow on the ground is scraped by the rotating rotary blades 41 on both sides and the snow is removed from the rear surface. It is guided by the cover 57 and is scattered and ejected diagonally forward and upward.

In addition, snow that enters the center is guided to the rotary blades 41, 41 on both sides along the front end surface of the convexly formed lid part 73, and since the entire center cover 67 is made of synthetic resin, snow does not adhere to the center cover 67. There's nothing to do.

Since the present invention has the configuration as described in the claims, it prevents snow from adhering to the aluminum alloy gear case in the center of the snow removal section and its vicinity, eliminates any hindrance to the rotation of the rotor, and eliminates snow. This allows work to be carried out smoothly.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a perspective explanatory view of one embodiment of the present invention;
3 is a side sectional view taken along the - line in FIG. 2, and FIG. 4 is a side sectional view of the important part. Explanation of the symbols representing the main parts of the drawing, 3...
Operating rod, 5...engine, 17...gear case, 19...engaging portion, 41...rotor blade, 57...
Rear cover, 67...center cover.

Claims (1)

[Scope of utility model registration request] An engaging part 19 of a gear case 17 made of aluminum alloy is fixed to the front end of the operating rod 3, which has an engine 5 at the rear end, and is pivotally supported on both sides of the gear case 17, and is driven by the engine 5. Rotating rotary blades 41, 41 are provided, and are fixed to the outer periphery of the engaging portion 19 to cover the rear of the rotary blades 41, 41 and move the snow shoveled by the rotary blades 41, 41 forward and upward. A rear cover 57 made of synthetic resin for guiding is provided, and a central cover 67 made of synthetic resin having a convex front surface surrounding the gear case 17 is fixedly provided within the rear cover 57. Features a snow shovel.