JP2011254775A - Traveling type lawn mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for selectively using a travelling type lawn mower and a hand-held type lawn mower at all times.SOLUTION: The traveling type lawn mower 10 mowing lawn while travelling has an attaching part capable of attaching the hand-held type lawn mower 60. In this configuration, the part of the lawn where the travelling type lawn mower cannot mow can be mowed by the hand-held type lawn mower. Even when there is an obstacle, the hand-held type lawn mower can be used quickly without moving away from the travelling type lawn mower, thereby enabling to perform lawn mowing work efficiently.

Description

  The present invention relates to a traveling lawn mower that cuts grass while traveling. In the present specification, the traveling lawn mower includes a lawn mower that travels by a force applied by a user and a lawn mower that travels by power from a power source (for example, an engine, a motor, etc.).

  Patent Document 1 discloses a traveling lawn mower that cuts grass while traveling. This type of traveling lawn mower cuts the lawn with the blade by traveling while operating the blade.

JP-A-9-252626

  Since the traveling lawn mower is relatively large, the cutting width is wide and the lawn can be cut efficiently. On the other hand, it is difficult to mow the lawn for obstacles such as fences and trees. Therefore, many users carry a hand-held lawn mower after the work with the traveling lawn mower and go around the working range again, and mow the lawn at the time of the obstacles that are left behind. Thus, a lawn surface can be finished finely by using a traveling lawn mower and a handheld lawn mower together. However, it takes a relatively long time to carry the handheld lawn mower and go around the working range again while searching for uncut leaves. In view of such a problem, the present invention provides a technique that allows a user who uses a traveling lawn mower and a handheld lawn mower together to complete the lawn mowing work in a relatively short time.

  The present invention is embodied in a traveling lawn mower. This traveling lawn mower has an attachment portion to which a handheld lawn mower can be attached.

  A handheld lawn mower can be attached to the traveling lawn mower. Since the hand-held lawn mower is smaller than the traveling lawn mower, the lawn mower can be mowed cleanly in the case of an obstacle. Therefore, the user can mow the lawn with a traveling lawn mower for areas without obstacles, and mow the lawn with a handheld lawn mower for obstacles. When there is an uncut portion due to the traveling lawn mower, the handheld lawn mower can be used immediately, so that the lawn mowing work can be performed efficiently.

  When the traveling lawn mower with the handheld lawn mower attached to the mounting portion is viewed from above, the center of gravity of the handheld lawn mower is such that the center of gravity of the front wheel of the traveling lawn mower and the rear wheel It is preferably configured to be located between the wheel axles.

  According to such a configuration, the handheld lawn mower attached to the traveling lawn mower does not greatly disturb the balance of the traveling lawn mower. The traveling lawn mower can travel stably even when the handheld lawn mower is attached.

  The traveling lawn mower described above includes a first attachment part capable of attaching a handheld lawn mower and a second attachment part capable of attaching a handheld lawn mower larger than the handheld lawn mower attached to the first attachment part. It is preferable to have.

  According to such a configuration, a small handheld lawn mower can be attached to the traveling lawn mower, or a large handheld lawn mower can be attached. A user who owns both a small handheld lawn mower and a large handheld lawn mower can select a handheld lawn mower to be attached to the traveling lawn mower according to the work contents. In addition, for users who own only one of the small handheld lawn mower and the large handheld lawn mower, the existing handheld lawn mower can be run without buying a new handheld lawn mower of another size. Can be attached to a lawn mower.

When the attachment portion has the first attachment portion and the second attachment portion, the first attachment portion may be formed in the second attachment portion, or the first attachment portion is at a position different from the second attachment portion. It may be formed.
If the 1st attaching part is formed in the 2nd attaching part, an attaching part can be made small. If the first attachment portion is formed at a position different from that of the second attachment portion, two handheld lawn mowers can be attached to the traveling lawn mower at the same time.

1 is a top view of a traveling lawn mower 10 according to Embodiment 1. FIG. 1 is a side view of a traveling lawnmower 10 according to a first embodiment. Sectional drawing of the upper surface vicinity part of the traveling-type lawn mower 10 of Example 1 (sectional drawing in the III-III line of FIG. 1). FIG. 6 is a top view of a traveling lawn mower 110 according to a second embodiment. FIG. 6 is a side view of a traveling lawn mower 110 according to a second embodiment. FIG. 6 is a top view of a traveling lawn mower 210 according to a third embodiment. FIG. 6 is a side view of a traveling lawn mower 210 according to a third embodiment. FIG. 6 is a top view of a traveling lawn mower 310 according to a fourth embodiment. FIG. 10 is a side view of a traveling lawn mower 310 according to a fourth embodiment. FIG. 10 is a top view of a traveling lawn mower 410 according to a fifth embodiment. Sectional drawing of the upper surface vicinity part of the traveling-type lawn mower 410 of Example 5 (cross-sectional view in the XI-XI line of FIG. 10).

  As examples of the traveling lawn mower, traveling lawn mowers according to Examples 1 to 5 will be described.

  FIG. 1 shows a top view of a traveling lawn mower 10 of Example 1, and FIG. 2 shows a side view of the traveling lawn mower 10. The traveling lawn mower 10 is a hand-held lawn mower that travels with the force applied by the user. The traveling lawnmower 10 includes a body 12, a pair of front wheels 14, a rear wheel 16, a handle 18, a blade 20, a switching lever 22, and a grass collecting basket 24.

  The pair of front wheels 14 are respectively installed on the left and right of the front portion of the body 12. The pair of front wheels 14 are connected to each other by a shaft 14a. The pair of front wheels 14 can rotate with respect to the body 12 about the central axis of the shaft 14a.

  The rear wheel 16 is disposed below the rear portion of the body 12. The rear wheel 16 can rotate with respect to the body 12 about the central axis of the shaft 16a.

  The blade 20 is installed in the lower part of the body 12. As shown in FIG. 2, the blade 20 is installed at a position facing the ground. The blade 20 rotates about an axis substantially perpendicular to the ground. The blade 20 is rotationally driven by a motor (not shown) built in the body 12.

  The switching lever 22 is installed at the front portion of the body 12. When the user operates the switching lever 22, the height position of the body 12 with respect to the front wheel 14 changes. Thereby, the distance between the blade 20 and the ground is changed. That is, the length of lawn mowing by the blade 20 can be adjusted.

  The handle 18 (not shown in FIG. 2) has shafts 18a and 18b and a gripping portion 18c. One end portion of the shaft 18 a is connected to one side surface of the body 12, and one end portion of the shaft 18 b is connected to the other side surface of the body 12. The shafts 18 a and 18 b extend rearward and obliquely upward from the body 12. The other end portions of the shaft 18a and the shaft 18b are connected to each other by a gripping portion 18c. Normally, the user walks while holding the grip portion 18c and pushing the traveling lawnmower 10. As a result, the traveling lawn mower 10 travels on the ground. A power cord 18d is connected to the grip portion 18c. The length of the power cord 18d is shorter than the lengths of the shafts 18a and 18b. As a result, the power cord 18 d is prevented from contacting the blade 20. An extension cord (electric cord for connecting to a power source) can be connected to the power cord 18d. Electric power is supplied to the motor described above via the extension cord and the power cord 18d.

  The grass basket 24 is connected to the rear part of the body 12. The grass collecting basket 24 accommodates the cut grass.

  The power cord 18d is connected to a power source via an extension cord, and the user turns on a switch (not shown), so that electric power is supplied to the motor. As a result, the motor rotationally drives the blade 20. The rotating blade 20 cuts grass that grows on the opposing ground. When the user walks while pushing the traveling lawn mower 10, the blade 20 hits the lawn and the lawn is cut. The mowed lawn is sent into the grass basket 24.

  FIG. 3 shows a cross-sectional view of the vicinity of the top surface of the body 12 taken along the line III-III in FIG. As shown in FIGS. 1 and 3, a recess 30 is formed on the upper surface of the body 12. A mounting portion for mounting the handheld lawn mower is formed in the recess 30. The attachment part has a first attachment part for attaching a small handheld lawn mower and a second attachment part for attaching a large handheld lawn mower.

The first mounting portion is configured by two grooves 40a and 40b extending in the recess 30 in parallel in the front-rear direction, and a groove 40c extending in the left-right direction in the recess 30. Each of the grooves 40a and 40b is provided with a rib. 1 and 2 show a state in which a small hand-held lawn mower 60 is attached to the first attachment portion.
The handheld lawn mower 60 includes a main body 62, a shear blade 64, a frame 66, and a power cord 68. The main body 62 incorporates a drive mechanism (such as a motor) for operating the shear blade 64 therein. In addition, the main body 62 is formed with a grip portion that is gripped by the user. The shear blade 64 is composed of two blades. One blade reciprocates with respect to the other blade. The frame 66 is configured by a wire bent into an annular shape, and is connected to the front and rear portions of the main body 62. The frame 66 is formed with two straight portions extending linearly below the main body 62 and the shear blade 64. These straight portions are formed in parallel to each other. The handheld lawn mower 60 is used in a state where the straight portion of the frame 66 is pressed against the ground. That is, the frame 66 defines the height of the shear blade 64 with respect to the ground (that is, the height of the lawn after mowing). The power cord 68 is connected to the rear part of the main body 62. The same extension cord as that connected to the power cord 18 d of the traveling lawn mower 10 can be connected to the power cord 68. The first attachment portion is provided at a position where the power cord 68 of the handheld lawn mower 60 does not reach the blade 20 of the traveling lawn mower 10.
When the handheld lawn mower 60 is attached to the traveling lawn mower 10, as shown in FIGS. 1 and 2, the rear end portion of the frame 66 of the handheld lawn mower 60 is fitted into the groove 40c, and a pair of straight lines of the frame 66 are fitted. The portion is fitted into the grooves 40a and 40b. Then, the ribs of the grooves 40 a and 40 b are engaged with the straight portions of the frame 66, and the handheld lawn mower 60 is fixed to the traveling lawn mower 10.

The second attachment portion is constituted by two grooves 50a and 50b extending in the front-rear direction in the recess 30 and the groove 40c described above. The width between the grooves 50a and 50b is wider than the width between the grooves 40a and 40b. A groove 40a and a groove 40b are formed between the groove 50a and the groove 50b. That is, the first attachment portion described above is formed in the second attachment portion.
A handheld lawn mower larger than the handheld lawn mower 60 described above can be attached to the second attachment part. Large handheld lawn mowers typically have shear blades that are wider than handheld lawn mowers 60. The other structure of the large hand-held lawn mower is substantially the same as the structure of the hand-held lawn mower 60 described above, and thus the description thereof is omitted.
When a large handheld lawn mower is attached to the traveling lawn mower 10, the frame of the handheld lawn mower is fitted into the grooves 50a, 50b, and 40c. Thus, a large handheld lawn mower is attached to the traveling lawn mower 10. At this time, the power cord of the large handheld lawn mower does not reach the blade 20 of the traveling lawn mower 10.

  As explained above, the hand-held lawn mower can be attached to the traveling lawn mower 10. In places where there are no obstacles, the lawn mower 10 can efficiently cut the lawn. When there is an area where the traveling lawn mower 10 cannot cut the lawn, such as around an obstacle or a narrow area where the traveling lawn mower 10 cannot enter, it is attached to the traveling lawn mower 10. You can mow the lawn in that area using a handheld lawn mower. At this time, the handheld lawn mower can be used by removing the extension cord connected to the traveling lawn mower 10 and connecting the removed extension cord to the handheld lawn mower. That is, the user can use the handheld lawn mower without leaving the traveling lawn mower 10. By properly using the traveling lawn mower 10 and the handheld lawn mower as needed, the lawn mowing work can be completed in a relatively short time.

  As shown in FIGS. 1 and 2, in the state where the handheld lawn mower 60 is attached to the traveling lawn mower 10, the entire handheld lawn mower 60 is composed of the axle 14 a of the front wheel 14 and the axle of the rear wheel 16. 16a. In this state, the center of gravity of the handheld lawn mower 60 is located between the axle 14a and the axle 16a. Therefore, the weight of the hand-held lawn mower 60 is stably supported by the front wheel 14 and the rear wheel 16. For this reason, even when the handheld lawn mower 60 is attached, the traveling lawn mower 10 can travel stably.

  As described above, the traveling lawn mower 10 can be attached with a small handheld lawn mower 60 and a large handheld lawn mower. The user can select a hand-held lawn mower attached to the traveling lawn mower 10 according to the application. Moreover, in the traveling lawnmower 10, the first attachment portion is formed in the second attachment portion. Thereby, even if it is the upper surface of the narrow body 12, two types of handheld lawn mowers can be selectively attached.

  Below, the traveling lawn mowers of Examples 2 to 5 in which the traveling lawn mower 10 of Example 1 is modified will be described. In addition, about the part which has the function similar to the traveling lawn mower 10 of Example 1 among the traveling lawn mowers of Examples 2-5, while attaching the same reference number as Example 1, the description is abbreviate | omitted. .

4 shows a top view of the traveling lawn mower 110 according to the second embodiment, and FIG. 5 shows a side view of the traveling lawn mower 110 according to the second embodiment.
As shown in FIGS. 4 and 5, the traveling lawn mower 110 according to the second embodiment has a base 132 that protrudes from the upper surface of the body 12 and has a flat upper surface. Four ribs 140 a, 140 b, 150 a, and 150 b are erected on the base portion 132. In addition, a holding portion 160 is formed on the base portion 132.
As shown in FIGS. 4 and 5, when the small hand-held lawn mower 60 is attached, the rear end portion of the frame 66 is fitted between the holding portions 160, and the pair of straight portions of the frame 66 are ribs 140a and 140b. Fit between. Thereby, the small handheld lawn mower 60 can be fixed. Similarly, a large hand-held lawn mower can be fixed by the ribs 150a and 150b and the holding part 160. Two types of hand-held lawn mowers can also be attached to the traveling lawn mower 110 of the second embodiment.

6 shows a top view of the traveling lawn mower 210 according to the third embodiment, and FIG. 7 shows a side view of the traveling lawn mower 210 according to the third embodiment.
As shown in FIGS. 6 and 7, in the traveling lawn mower 210 of the third embodiment, a recess 230 is formed on the upper surface of the body 12. The bottom surface of the recess 230 is formed flat. In the recess 230, two grooved ribs 240a and 240b are erected.
As shown in FIGS. 6 and 7, when the handheld lawn mower 60 is attached, the main body 62 of the handheld lawn mower 60 is inserted into the grooved rib 240a and the grooved rib 240b, and the blade of the shear blade 64 is inserted into the groove. Fit into the grooves of the ribs 240a, 240b. Thereby, the hand-held lawn mower 60 can be fixed.

FIG. 8 is a top view of the traveling lawn mower 310 according to the fourth embodiment, and FIG. 9 is a side view of the traveling lawn mower 310 according to the fourth embodiment.
As shown in FIGS. 8 and 9, the traveling lawn mower 310 of the fourth embodiment has a base portion 332 that protrudes from the upper surface of the body 12 and has a flat upper surface. Two ribs 340 a and 340 b are erected on the base portion 332. Further, a holding portion 360 is formed on the rear side of the upper surface of the body 12.
As shown in FIGS. 8 and 9, when the hand-held lawn mower 60 is attached, the lower rear portion of the main body 62 is fitted between the holding portions 360, and the main body 62 is fitted between the ribs 340a and 340b. Thereby, the hand-held lawn mower 60 can be fixed.

FIG. 10 shows a top view of the traveling lawn mower 410 according to the fifth embodiment, and FIG. 11 shows a cross-sectional view of a portion near the upper surface of the body 12 of the traveling lawn mower 410 according to the fifth embodiment. .
As shown in FIGS. 10 and 11, in the traveling lawn mower 410 of the fifth embodiment, a recess 430 is formed on the upper surface of the body 12. On the bottom surface of the recess 430, a recess 440, two grooves 450a and 450b extending in the front-rear direction, and a groove 450c extending in the left-right direction in the recess 430 are formed. Ribs are provided on the side wall surface of the recess 440 and the grooves 450a and 450b, respectively.
As shown in FIG. 10, when the small hand-held lawn mower 60 is attached, the rear end portion of the frame 66 is fitted into the groove 450 c and the pair of linear portions of the frame 66 is fitted into the recess 440. Then, the concave portion 440 is engaged with the straight portion of the frame 66. Thereby, the small handheld lawn mower 60 can be fixed. When attaching a large handheld lawn mower, the rear end portion of the frame is fitted into the groove 450c, and the pair of linear portions of the frame are fitted into the grooves 450a and 450b, respectively. Then, the grooves 450a and 450b are engaged with the straight portions of the frame. Thereby, a large hand-held lawn mower can be fixed.

  In addition, the structure which fixes a handheld lawn mower to a traveling lawn mower is not limited to the structure demonstrated in the said Examples 1-5.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or the drawings can achieve a plurality of objects at the same time, and has technical usefulness by achieving one of the objects.

10: Traveling lawn mower 12: Body 14: Front wheel 16: Rear wheel 18: Handle 20: Blade 22: Switching lever 24: Grass basket 30: Recess 60: Handheld lawn mower 62: Main body 64: Shear blade 66: Frame

Claims (4)

A traveling lawn mower that cuts grass while traveling,
A traveling lawn mower having a mounting part to which a handheld lawn mower can be attached.   The center of gravity of the handheld lawn mower is located between the front axle and the rear axle of the traveling lawn mower when viewed from above the traveling lawn mower with the handheld lawn mower attached to the mounting section. The traveling lawn mower according to claim 1.   A first attachment part capable of attaching a handheld lawn mower and a second attachment part capable of attaching a handheld lawn mower larger than the handheld lawn mower attached to the first attachment part. The traveling lawn mower according to 1 or 2.   The traveling lawn mower according to claim 3, wherein the first attachment portion is formed in the second attachment portion.

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