JPH0555836U - Lawn mower - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lawn mowing device capable of cutting mowed grass finely and dropping it between turf leaves. A lawn mowing device in which a plurality of mowing blades 7a to 7c are arranged side by side in a housing case 9 so as to be rotatable and rotatable about a vertical axis, respectively. The cutting blades 7a to 7c are provided on the cutting side 7c located on the lower side in the rotating direction, and the cutting blades 14 capable of cutting the floating cutting grass in the housing case 9 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a lawn mowing device in which a plurality of mowing blades are arranged side by side in a housing case so as to be rotatable about respective longitudinal axes.

[0002]

[Prior Art]

 Conventionally, as a lawnmower of this type, for example, as disclosed in Japanese Utility Model Laid-Open No. 3-83018, the lawn mowed by a mowing blade is cut through a duct from an opening formed on one side of the housing. A structure having a structure of storing in a grass container was known.

[0003]

[Problems to be solved by the device]

 By the way, in recent years, in order to reduce environmental problems and dust collection work, it has been proposed to spray cut grass as fertilizer for reuse instead of collecting and discarding it. However, in the above-mentioned conventional structure, if grass is not collected, it is only necessary to mow the grass on the grass and drop the mowed grass on the grass as it is. There is a drawback that it becomes a condition to ride on the grass and it looks bad and the decay of the fertilizer progresses slowly. Therefore, there is a demand for performing lawn mowing work by cutting the lawn grass finely and dropping it between the leaves of the lawn.However, in the case of the conventional structure described above, the lawn mower is finely cut and the lawn grass is cut into pieces. It was difficult to drop in between. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lawnmower capable of cutting the lawn grass finely and dropping it between the lawn leaves.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the lawnmower according to the present invention has the structure described above, in which the mowing blade is driven to rotate in the same direction, and the mowing blade of the mowing blade with respect to the traveling direction of the mowing The cutting blade located on the lower side in the rotating direction of the cutting blade is provided with a shredding blade capable of shredding the floating grass in the housing case. Further, a configuration may be adopted in which a cover body is provided at a side wall portion of the housing case having a lower cutting direction in the rotation direction of the cutting blade provided with the shredding blade so that the side wall portion can be opened and closed freely. The actions and effects of this characteristic configuration are as follows.

[0005]

[Action]

 In other words, the cutting grass floats and rotates along with the rotation of the cutting blade in the housing case, and in that rotated state, it is located on the lower side of the cutting blade rotation direction with respect to the cutting direction. It becomes easier for the cutting grass to concentrate on the cutting blade. Then, when the cut grass is concentrated, the floating cut grass is shredded by the shredding blade. The shredded cut grass eventually becomes small pieces, so when dropped into the grass, it is easy to get between the leaves of the grass. Further, by providing a cover body on the side wall portion of the housing case of the cutting blade, which is provided with the shredding blade, in the rotation direction lower hand, the side wall portion can be opened and closed freely so that the side wall portion is closed. The turf can be circulated while floating in the housing case, and when the side wall is open, the cut grass is discharged by connecting a duct connected to the grass container to the open position. You can also do

[0006]

[Effect of the device]

 Therefore, by simply remodeling a conventional structure that was designed to collect mowed grass by simply providing a shredding blade on one mowing blade, while mowing the mowing grass, the mowing grass, especially the grass leaves, can be collected. Not only can it be used as fertilizer, but it can also be sprayed with a good appearance.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows a riding type lawnmower. This riding type lawnmower is equipped with an engine 4, a steering unit 5 and the like mounted on a machine body 3 supported by a pair of left and right front wheels 1 and 1 and rear wheels 2 and 2, and at the same time, The lawn mowing device 6 is suspended from and supported on the lower abdomen.

As shown in FIGS. 1 and 2, the lawn mowing device 6 has three cutting blades 7a, 7b, 7c arranged side by side on the left and right, respectively, and drive shafts 8a, 8b, 8b, It is internally supported in the housing case 9 in a state of being rotationally driven by 8c. The power from the engine 4 is transmitted to the drive shaft 8b of the central cutting blade 7b of the three cutting blades 7a, 7b, 7c, and the pulleys 10a, 10b, 10c are connected in series, and one transmission belt 11 is stretched over these pulleys 10a, 10b, 10c to drive the cutting blades 7a, 7b, 7c. The effective radii of belt wrapping of the pulleys 10a, 10b, 10c are such that the slip of the transmission belt 11 is taken into consideration, and the central pulley 10b forming the drive pulley and the transmission belt 11 are sequentially arranged from the central pulley 10b. It is set such that the left pulley 10a and the right pulley 10c that are wound around become smaller in this order. As a result, the cutting blades 7a, 7b, 7c have substantially the same rotation speed. Therefore, it is possible to prevent the occurrence of a humming noise or the like due to the difference in the rotational speed of the cutting blades 7a, 7b, 7c.

Further, the cutting blades 7a, 7b, 7c are rotationally driven clockwise in plan view. The cutting blade 7c, which is located on the lower arm of the traveling lawn mower in the direction of rotation during the mowing work, that is, at the right end, is a long plate-shaped member formed by machining. As shown in FIG. 1 to FIG. 3, lawn mowing blades 12 and 12 for mowing lawn grass are formed at the edges of the lower direction of rotation of both ends of the mowing blade 7c with respect to the drive shaft 8c. The lawn mowing blades 12, 12 are provided with first inclined guide portions 13, 13 for lifting the mowing lawn in the housing case 9 on the upper side in the rotation direction of the mowing blade 7c. At the position closer to the drive shaft 8c than the lawn mowing blades 12 and 12, shredding blades 14 and 14 for shredding the floating lawn mowing grass are formed so as to be higher than the lawn mowing blades 12 and 12. The second slant guide portions 15 and 15 are formed on the upper side of the shredding blades 14 and 14 for guiding the shredded grass into the lower part by guiding the shredded grass downward.

On the other hand, the cutting blade 7a at the left end and the cutting blade 7b at the center are similar to the cutting blade 7c in that a long plate-shaped member is machined and a lawn mowing blade and a first inclined guide portion are formed. It has a structure and does not include a shredding blade and a second inclined guide portion.

As shown in FIGS. 1 to 3, an opening 16 is formed in the side wall portion of the housing case 9 where the lower hand of the cutting blade 7c in the rotational direction is located at the lower arm, that is, at the right end. At the same time, a cover body 17 for closing the opening 16 is detachably attached to the housing case 9. The cover body 17 is composed of a sheet metal member that is divided into upper and lower halves, and a lower side member 17B is provided so that an upper and lower position can be adjusted with respect to an upper side member 17A that is bolted to the housing case 9. The lower edge of the lower member 17B is formed by bending the inside of the housing case 9 into a crocodile. By this bending, an air passage is formed in the housing case 9 so that the cut grass can be easily carried around. Instead of this bending, a round bar may be welded to the inner side of the housing case 9 at the lower edge portion of the cover body 17 to the warp. When the cut grass is shredded and dropped into the grass, the cover body 17 is attached to the housing case 9, but the body 3 is equipped with a grass container capable of storing the cut grass. If configured to collect the cut grass, remove the cover 17 from the housing case 9 and attach the duct connected to the grass container to the opening 16 of the housing case 9. May be.

With the above-described configuration, the cut grass that has been cut by the cutting blades 7a to 7c is suspended by the first inclined guide portion 13 of each of the cutting blades 7a to 7c, and is rotated by the rotation of the cutting blades 7a to 7c. It is collected by the cutting blade 7c located on the gutter. Then, the suspended cut grass in the gathered state is cut by the shredding blade 14 of the cutting blade 7c, and the cut grass is guided downward by the second tilt guide portion 15. Therefore, the cut grass that has been dropped is a small piece, and it will enter between the leaves of the grass.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a lawnmower.

FIG. 2 is a bottom view showing the lawnmower.

FIG. 3 is a perspective view showing a part of a grass cutting blade and a cover body of an end portion of the lawn mowing device.

FIG. 4 is an overall side view showing a riding type lawnmower.

[Explanation of symbols]

 7a to 7c Cutting blade 9 Housing case 14 Shredding blade 17 Cover body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minoru Kyotani 64, Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A housing case (9) for rotatably driving a plurality of cutting blades (7a to 7c) around a vertical axis.
A lawn mowing device arranged in parallel inside the cutting blade (7a-
7c) is driven to rotate in the same direction, and at the cutting blade (7c) located on the lower side of the cutting blade (7a to 7c) rotation direction in the cutting direction (7a to 7c) of the cutting blades (7a to 7c). A lawn mowing device comprising a shredding blade (14) capable of shredding floating mowing grass in a housing case (9). 2. A cover which can be removably attached to a side wall portion of the housing case (9) in which the cutting blade (7c) having the shredding blade (14) has a lower rotation direction. The lawn mowing device according to claim 1, wherein a body (17) is provided.