JPH0726898Y2 - Handle for walk-behind work machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle for a walk-type working machine which is detachably attached to a walk-type working machine such as a walk-type lawn mower.

[0002]

2. Description of the Related Art Conventionally, as a handle for this type of walk-type working machine, a handle which is configured to be foldable into three folds for compact packing and is convenient for transportation and storage is Previously fact fair 2-16581
It has been proposed earlier as shown in the publication. As shown in FIG. 6, the handle for a walk-behind work machine includes a pair of attachment-side handle bodies A having attachment portions a that can be detachably attached to the walk-behind work machine, and a grip portion b extending in a curved shape. A pair of gripping side handle bodies B and intermediate handle bodies C having substantially the same length as each of the handle bodies A, B, and C, and the handle bodies A, B, and C are provided on both sides in the longitudinal direction of the intermediate handle body C. The mounting side handle body A and the grip side handle body B are folded to the intermediate handle body C side via the pivot pins D, D, E, E, respectively, and the intermediate handle body C.
To the intermediate handle body C and to the mounting side handle bodies A.
While restricting bodies F and G for restricting and holding the standing position between the gripping side handle body B and the gripping side handle body B are respectively provided, the gripping side handle bodies B are disposed between the gripping side handle bodies B on the regulating body G side. The pressing means H is provided to press and integrate the members into a standing shape. The pressing means H is composed of a bolt H1, a nut H2, and a cushioning nylon pipe H3 which are inserted into through holes I, I formed in the gripping portion b side of each gripping side handle body B so as to face each other. is doing.

When assembling the above handle to a walk-behind work machine such as a lawn mower, as shown by the solid line in FIG. 6, the mounting side handle bodies A and the gripping side handle bodies B are connected to each other. , The pivot pins D and E are respectively pivoted to an upright position with respect to the intermediate handle body C, and then the bolts H1 constituting the pressing means H are passed through the through holes of the grip side handle bodies B. I and I are passed through, and the nut H2 is screwed at the insertion end portion thereof, so that each of the gripping side handle bodies B is pressed toward the regulating body G side to be integrated in an upright shape. Each mounting portion a of each mounting-side handle body A is assembled to the walk-type working machine side.

When the handles are packed, transported and stored, as shown by the phantom lines in the figure, each of the mounting-side handle bodies A and the grip-side handle bodies B are respectively separated from each other. Folding into three folds at the folding position on the side of the intermediate handle body C around the pivot pins D and E, and packing in such a folded state enables compact packing, and also for transportation and storage. It becomes convenient.

[0005]

However, in the above-mentioned handle for walking type working machine, the bolt H1 and the nut are used as the pressing means H for unifying the grip body side handle bodies B, B in the standing state. H2 and a buffer nylon pipe are used, and the bolt H1 is inserted into the through holes 1 and 1 formed in the grip portion side b of each grip side handle B so as to face each other, and the buffer nylon pipe H3 is provided between the grip side handles. Since the bolt H1 is inserted while being inserted, and the nut H2 is screwed and integrated with the tip of the inserted bolt H1, not only the number of parts is increased, but also the grip side handle B is penetrated. It is necessary to purposely perform the drilling work for forming the hole I, and this drilling work must be performed while positioning so that the through holes I of the gripping side handles B face each other. Therefore, there is a problem that the manufacturing thereof is very troublesome and the cost is high, and moreover, when swinging the gripping side handle bodies B to the standing position and the folding position with respect to the intermediate handle body C, Since the bolt H1 and the nut H2 of the pressing means H are required to be screwed, the raising and folding operations of the grip-side handle bodies B are complicated and time-consuming, and moreover, the grip-side handles are also required. When the body B is held in the upright position, the bolts H1 and nuts H2 of the pressing means H are exposed to the outside of the grip-side handle bodies B, so that the bolts H1 and nuts H2 are an obstacle or have an external appearance. There were also problems such as getting worse.

The present invention has been made in view of the above problems, and its purpose is to reduce the number of parts and the number of manufacturing steps to reduce the manufacturing cost, and yet to raise and fold the handle body on the grip side. (EN) A handle for a walk-behind work machine capable of performing a tatami mat operation easily, easily, and quickly and, in addition, providing a good appearance when the grip-side handle body is held in an upright position.

[0007]

To achieve the above object, the present invention provides a pair of grip side handles having a mounting side handle body 3 detachably mounted on a walk-type working machine and a grip portion 21 extending in a curved shape. A walk-behind working machine comprising a body 2 and an intermediate handle body 4, and the grip-side handle body 2 and the attachment-side handle body 3 are pivotally supported with respect to the intermediate handle body 4 so as to be swingable between a folding position and an upright position. In the handle for use, a pair of engaging portions 7 that can be engaged with each of the gripping side handle bodies 2
1, 72 and each of the grip side handle bodies 2 and 2 are intervened,
Further, a locking tool 7 having an intervening part 73 engageable with the facing part of the curved base part of the grip 21 is provided, and at least one of the engaging parts 71 and 72 of the locking tool 7 is provided. The engaging portion 72 can be engaged with and disengaged from the grip side handle body 2, and the standing position of the grip side handle body 2 is maintained by the engagement of the engagement portion 72 with the grip side handle body 2. It is characterized by having done.

[0008]

When the above-mentioned handle is assembled to the walk-behind work machine, the grip side handle body 2 and the attachment side handle body 3 are respectively swung to the standing position with respect to the intermediate handle body 4, and then the attachment is performed. The side handle body 3 is assembled to the walk-behind work machine side, the locking tool 7 is interposed between the grip side handle bodies 2, and the grip side handle bodies 2 are arranged.
With the curved base portion of the grip portion 21 provided on each of the engaging portions 7 of the engaging member 7 being locked between the facing portions,
1, 72 are engaged with each of the grip side handle bodies 2. By doing so, the engagement portions 71 and 72 of the locking tool 7 are engaged with the grip-side handle bodies 2, and the intervention portion 73 is interposed between the opposing portions at the curved base portion of the grip portion 21. Therefore, each gripping side handle body 2 is held in an upright state with respect to the intermediate handle body 4 without the locking tool 7 coming off from each gripping side handle body 2.

In addition, the above handles are packed or transported,
In the case of storing, at least one side of the engaging portions 71, 72 provided on the locking tool 7 is separated from the grip side handle body 2 and the grip side handle body 2 is moved.
To the folding position on the side of the intermediate handle body 4, and further the folding of the mounting side handle body 3 to the folding position on the side of the intermediate handle body 4 so that The handle bodies 2 and 3 on the mounting side and the mounting side are folded into three folds. Therefore, by packing in such a folded state, compact packing becomes possible, and it is convenient for transportation and storage. It will be.

Further, the locking tool 7 includes a pair of engaging portions 7
Although it is possible to make a simple structure including 1, 72 and the intervention portion 73, by using such a locking tool 7, each of the gripping side handle bodies 2 can be easily operated in the standing position with respect to the intermediate handle body 4. Therefore, the number of parts and the number of manufacturing steps can be reduced as compared with the conventional one, and the manufacturing cost can be reduced, and the gripping side handle bodies 2 can be erected through the locking tools 7. Not only can the folding operation be performed easily, but when the gripping-side handle bodies 2 are held in the standing position via the locking tools 7, the locking tools 7 are used for the gripping-side handles. Since it is attached between the bodies 2 in an intervening state, the locking tool 7 does not disturb or impair the appearance.

[0011]

FIG. 5 shows the walking type working machine handle according to the present invention applied to a walking type lawn mower. The walking type lawn mower 1 includes a body 10 having walking wheels 11 and 11.
A rotating blade body 13 having a plurality of spiral cutting blades 12 on its outer periphery is rotatably supported on the lower side of the rear side of the traveling direction, and the rotating blade body 13 is attached to each traveling wheel 11 by a speed increasing mechanism ( (Not shown), while a handle having a predetermined length, which will be described in detail later, is detachably attached to the upper side of the machine body 10 and the lawn mower 1 walks and runs while gripping the handle. Thus, the lawn is cut while the rotary blade body 13 is rotated in association with the traveling wheels 11.

The handle of the walking lawn mower 1 is
As is apparent from FIG. 1, a pair of grip-side handle bodies 2 and 2 each having a grip portion 21 and having a substantially L shape, and a pair of mount-side handle bodies having a mounting portion 31 on the lawn mower 1 side. 3, 3 and an intermediate handle body 4 arranged between these handle bodies 2, 3 respectively.
The lengths of 3 and 4 are substantially the same.

The grip-side handle bodies 2 and 2 and the attachment-side handle bodies 3 and 3 are provided on both sides in the lengthwise direction of the intermediate handle body 4 with pivot pins 5, 5 and 6, 6 respectively.
Through, is pivotally supported so as to be swingable between the folding position toward the intermediate handle body 4 side and the standing position with respect to the intermediate handle body 4.

Further, in the widthwise intermediate portions on both sides in the length direction of the intermediate handle body 4, the regulating portions 41, 4 for regulating the standing positions of the grip side handle body 2 and the mounting side handle body 3 are provided.
2 is fixed.

Further, mounting holes 31a and 31a are formed at the tip ends of the mounting portions 31 and 31 provided on the mounting side handle bodies 3 and 3, respectively, and both sides of the body 10 of the lawn mower 1 are formed. The walls 10a, 10a are provided with head-mounted mounting pins 14, 14 projecting inward, and the mounting holes 31a of the mounting portions 31 are fitted into the mounting pins 14, thereby to The whole is attached to the lawnmower 1 so as to be swingable around the respective attachment pins 14 and detachable. In addition, the intervals between the mounting portions 31 of the mounting-side handle bodies 3 are set to the body 10
When the mounting side handle bodies 3 are mounted on the machine body 10, the mounting portion 31 of each mounting side handle body 3 is attached to each side wall 10a of the machine body 10 when the mounting side handle bodies 3 are mounted on the machine body 10. The respective mounting holes 31a are fitted into the respective mounting pins 14 in a state of being elastically displaced inward, and at this time, the elastic restoring force applied to the respective mounting side handle bodies 3 causes the respective side walls 10a to move. I am trying to hit it.

In the handle for a walk-type working machine having the above construction, as shown in FIG. 1, the gripping side handle bodies 2 and 2 are erected with respect to the intermediate handle body 4 via the locking members 7. I kept it in position. That is, as shown in FIGS. 2 and 3, the locking tool 7 is engageable with each of the gripping side handle bodies 2 and 2 on the left and right sides of the locking tool body 70 made of a plate member. A pair of first and second engaging portions 71, 72 in the shape of a split cylinder are integrally provided, and the gripping side is provided on the upper side of the locking tool body 70 between the engaging portions 71, 72. A block-shaped intervention portion 73 that is interposed between the handle bodies 2 and 2 and that can be engaged between the facing portions of the curved base portions 21a and 21a of the grip portions 21 and 21 is integrally provided. Then, the first engaging portion 71 of the locking tool 7 is held on one side of the grip-side handle body 2 so as to be rotatable and slidable and non-releasable, and the second engaging portion The portion 72 can be engaged with and disengaged from the grip side handle body 2 on the other side, and the second side is attached to the grip side handle body 2.
By engaging the engaging portions 72, the grip-side handle bodies 2 are held in the standing position.

Specifically, as is apparent from FIG. 2, the first engaging portion 71 has a structure in which the one-side grip side handle body 2 is
The first engaging portion 71 is formed on the one handgrip side handle body 2 with a small open portion that greatly exceeds the locking point O that is 180 degrees out of phase with the position where the intervention portion 73 is contacted. The first engaging portion 71 is configured so as not to be disengaged when being engaged with the second engaging portion 72, while the second engaging portion 72 slightly exceeds the locking point O with respect to the other side grip side handle body 2. The second engaging portion 72 is formed in a split cylinder shape with a large open portion so that the second engaging portion 72 can be attached to and detached from the other grip side handle body 2 by utilizing the elastic force of the second engaging portion 72. ing. At this time, it is preferable that the entire locking tool 7 is formed of a synthetic resin or the like, whereby the second
The attaching / detaching operation to / from the other grip side handle body 2 using the elastic force of the engaging portion 72 can be easily performed.

The inner diameter of the first engaging portion 71 is d1,
When the inner diameter of the second engaging portion 72 is d2 and the outer diameter of each grip side handle body 2 is d3,

[0019]

[Equation 1]

[0020]

As described above, the first engaging portion 71 is slidably and rotatably and irremovably engaged with and held on one side of the grip side handle body 2, so that the first engaging portion 71 is retained when not in use. The locking tool 7 can be prevented from being lost, and the first engaging portion 71 can be slid with respect to the one-side gripping side handle body 2 to allow the intervention portion 73 to be inserted.
Interveningly rotates between the handle bodies 2 and 2 to engage the second engaging portion 72 with the grip side handle body 2 on the other side, so that the handle bodies 2 and 2 can be easily operated. The standing state can be maintained.

When the intervening portion 73 provided on the locking tool body 70 is formed in a block shape, the intervening portion 73 is used.
The curved base portions 21a, 21a of the grip portions 21, 21 on both side surfaces of the grip side handle bodies 2, 2 when intervening between the grip side handle bodies 2, 2.
It is preferable to form the inclined surfaces 73a, 73a with which are engaged. That is, by providing the inclined surfaces 73a and 73a, the second engaging portion 72 is engaged with the other grip-side handle body 2 and each grip-side handle body 2 is held at the standing position. Therefore, the curved base portions 21a can be brought into close contact with the inclined surfaces 73a. Therefore, while preventing the locking tool 7 from falling off from the grip side handle bodies 2, The grip-side handle bodies 2 can be reliably held in the standing position while maintaining a predetermined distance.

Further, in this case, as shown in FIG. 2, the upper side width of the intervention portion 73 is L, and the protruding length of the intervention portion 73 from the locking tool body 70 is B. When the width of the restricting portion 41, that is, the distance between the gripping side handle bodies 2 and 2 in the upright state on the pivot side is 1,

[0024]

[Equation 2]

By so doing, the intervention section 73 can be reliably intervened between the gripping side handle bodies 2 and 2, and the predetermined interval l regulated by the regulation section 41. That is, it can be maintained in the standing position while maintaining.

Further, as shown in FIG. 4, the intervention section 7
3 may be formed in a plate shape, and the intervention portion 73 may be integrally projected from the upper side of the locking tool body 71. In the above embodiments, the locking tool 7 is made of synthetic resin, but the locking tool 7 is not limited to synthetic resin and may be made of metal, for example.

Next, the operation of the above configuration will be described. First, when assembling the handle for the walk-behind work machine to the lawnmower 1, as shown by the solid line in FIG. 1, the grip-side handle bodies 2 and the attachment-side handle bodies 3 are
Each of the pivot pins 5 and 6 is swung to a standing position with respect to the intermediate handle body 4, respectively. Then, the curved base portion 2 of the grip portion 21 provided on each of the grip side handle bodies 2
The intervention part 73 of the locking tool 7 is intervened between 1a, and
While sliding and rotating the first engaging portion 71 with respect to the one-side grip side handle body 2, the second engaging portion 72
Is engaged with the other grip-side handle body 2. By doing so, the engagement of each of the engaging portions 71, 72 of the locking tool 7 with respect to each of the grip side handle bodies 2 and the intervention portion 73 interposed between the curved base portions 21 a of the grip portions 21. Therefore, each of the grip side handle bodies 2
Is held at the standing position with respect to the intermediate handle body 4.
Further, each of the mounting side handle bodies 3 is assembled to the lawn mower 1 as described above.

When the above-mentioned handle for walk-behind working machine is to be packed, transported or stored together with the lawnmower 1, as shown by the phantom line in FIG. The first engaging portion 71 and the grip-side handle body 2 on the one side.
The grip-side handle body 2 in a state of being engaged and held by the
The second engaging portion 72 is disengaged from the other handgrip side handle body 2 while being rotated around, and the respective handgrip side handle bodies 2 are folded to the folding position on the side of the intermediate handle body 4. Further, by detaching each of the mounting-side handle bodies 3 from the lawnmower 1 and folding them into the folding position on the side of the intermediate handle body 4, the grip-side and mounting-side handles of the intermediate handle body 4 are removed. The bodies 2 and 3 are folded in three folds. Therefore, packing in such a folded state enables compact packing, and
It is convenient for transportation and storage and, moreover, since the locking tool 7 is engaged and held by the grip side handle body 2 on the one side, it is not lost.

As described above, the locking tool 7 can have a simple structure including the pair of first and second engaging portions 71, 72 and the intervention section 73, and the locking tool 7 can be provided. By using each of the gripping side handle bodies 2 in the standing position with respect to the intermediate handle body 4, the number of parts and the number of manufacturing steps are reduced, and the manufacturing cost is significantly reduced. The gripping side handle bodies 2 can be easily erected and folded through the grips, and when the gripping side handle bodies 2 are held at the standing position via the locking tools 7, Since the stopper 7 is attached between the gripping side handle bodies 2 in an intervening state, the stopper 7 does not hinder or impair the appearance.

In the above embodiment, the first engaging portion 71 of the locking tool 7 is engaged and held by the grip side handle body 2 on one side, and the second engaging portion 72 is grasped on the other side. The side handle body 2 is engaged and disengaged, but in the present invention,
Both of the engaging portions 71, 72 may be detachable from the grip-side handle body 2 and may be stored in appropriate places when not in use. Further, the lawn mower 1 has been described as an example of the walk type work machine in which the handle for the walk type work machine is assembled, but the handle for the walk type work machine of the present invention is not limited to the lawn mower 1 and other walk type work machines. It can also be applied to machines.

[0031]

As described above, in the handle for a walk-type working machine of the present invention, a pair of engaging portions 71, 72 engageable with the grip side handle bodies 2, 2 and the grip side handle bodies 2 are provided. , 2 for interposing, and an intervening portion 73 engageable with the facing portion of the curved base portion provided on each grip 21 is formed, Each engaging portion 7
At least one of the engaging portions 72 of the gripping side handle body 2 can be engaged with and disengaged from the gripping side handle body 2, and the gripping side handle body 2 is engaged by the engagement portion 72 engaging with the grip side handle body 2. Since the standing position of the body 2 is maintained, the number of parts and the number of manufacturing steps are reduced as compared with the conventional one, and the manufacturing is easy and the manufacturing cost can be reduced.
Moreover, while the standing and folding operations of the grip side handle body 2 can be performed easily and easily and quickly, the appearance when the grip side handle body 2 is held in the standing position can be improved. .

[Brief description of drawings]

FIG. 1 is a front view of a handle for a walk-behind work machine according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the locking tool viewed from the direction of the line XX in FIG.

FIG. 3 is a perspective view showing an overall structure of the locking tool.

FIG. 4 is a perspective view showing another embodiment of the locking tool.

FIG. 5 is a front view showing how the handle for the walking type working machine is attached to the lawnmower.

FIG. 6 is a front view showing a conventional handle for a walk-behind work machine.

[Explanation of symbols]

 2 Grip side handle body 21 Grip section 3 Mounting side handle body 4 Intermediate handle body 7 Locking tool 71 Engaging section 72 Engaging section 73 Intervening section

Claims (1)

[Scope of utility model registration request] 1. A grip side handle body 3 comprising a mounting side handle body 3 detachably mounted on a walk-behind work machine, and a pair of grip side handle bodies 2 and an intermediate handle body 4 each having a curved grip portion 21. A handle for a walk-type working machine in which a body 2 and a mounting-side handle body 3 are pivotally supported with respect to the intermediate handle body 4 so as to be swingable between a folding position and an upright position. A pair of engaging parts 7 that can be combined
1, 72 and each of the grip side handle bodies 2 and 2 are intervened,
Further, a locking tool 7 having an intervening part 73 engageable with the facing part of the curved base part of the grip 21 is provided, and at least one of the engaging parts 71 and 72 of the locking tool 7 is provided. The engaging portion 72 can be engaged with and disengaged from the grip side handle body 2, and the standing position of the grip side handle body 2 is maintained by the engagement of the engagement portion 72 with the grip side handle body 2. Handle for walk-behind work machine characterized by being.