JPH0430801B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a lawn mower equipped with a grass collection container.

[Conventional technology]

In this type of lawn mower, in order to attach the grass collection containers to the machine frame side, conventionally, an inverted U-shaped pipe frame that stands up from the machine frame has projections that support a pair of left and right grass collection containers, respectively. At the same time, a posture regulating mechanism is provided that clamps the outer circumferential surface of the inverted U-shaped pipe frame and an engagement hole into which the protruding piece can be inserted from a cap provided at the periphery of the upper end opening of the grass collecting container. The bracket was extended (for example, Japanese Utility Model Application No. 60-94037).

[Problem that the invention seeks to solve]

In the case of the above structure, the load of the grass collecting container acts intensively on one point of the cap via the bracket, so the cap supports the main body of the grass collecting container in a cantilevered state. As the amount of grass collected increased, the container became deformed and a gap was created between the container and the cover, causing mowing to leak.

However, there is a method of making the cap extremely strong to prevent deformation, but this does not avoid increasing the size of the cap itself, and the brackets, protrusions, etc. that correspond to the cap also have to be strong. It will be a large one.

Moreover, when removing the grass collection container after collecting grass, the bracket must be removed from the protrusion while lifting the heavy grass collection container, which is inconvenient as it is difficult to attach and remove the grass collection container.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grass collection container that can suppress leakage of lawn mowing as much as possible without increasing the size of the cap structure of the grass collection container, and also allows the grass collection container to be easily attached and removed.

[Means to solve problems]

The characteristic configuration of the present invention is that a fixed frame for placing and supporting the grass collection container is formed on the upper part of the support frame erected from the aircraft frame, and the fixed frame has a base provided on the periphery of the upper end opening of the grass collection container. A pair of left and right side frame portions are provided in a cantilevered manner and extend in one direction in the front and back so as to place and support the grass collection container. One of the fixed frame and the cap is provided with an opening that can be freely inserted and removed from the direction along the extending direction of the side frame portion, and a cap provided around the upper end opening of the fixed frame and the grass collecting container. The two protrusions are configured to be connected in a horizontal position restricted state by engagement with the engagement hole provided on the other protrusion, and the functions and effects thereof are as follows.

[Effect]

The characteristic configuration makes it possible to regulate the position of the grass collection container with respect to the support frame, and the characteristic configuration also allows the fixing frame to open the upper end of the grass collection container 8, as shown in FIG. 4, compared to the conventional configuration. Since the grass collection container 8 can be supported over a wide range of its periphery, the grass collecting container 8 will not become cantilevered due to single point support, so the strength of the cap 8A itself will not be increased more than necessary.

Moreover, as shown in the characteristic configuration, the grass collection container can be taken in and out from the direction along the extension direction of the side frame part through the opening, so the grass collection container can be moved in the direction along the extension direction of the side frame part. Insert it into the opening and place the cap of the grass collection container on the fixed frame. When connecting the grass collection container to the fixed frame in a state where the position is restricted, the grass collection container is supported while resting on the fixed frame, and then the projection piece and the engagement hole are engaged to adjust the position of the grass collection container. Connect to regulated state. When removing the grass collection container, leave the grass collection container containing grass clippings on the fixed frame, release the engagement between the protrusion and the engagement hole, and support the grass collection container on the fixed frame. Pull it out along the side frame and take out the grass collection container.

〔Effect of the invention〕

The position regulating device (protrusion and engagement hole) and the support structure (fixed frame) for the grass collection container are constructed as separate parts, and the support structure for the grass collection container supports the periphery of the upper end opening. Because of these two points, deformation can be suppressed without increasing the strength (larger size) of the base itself, and phenomena such as leakage of grass clippings can also be suppressed.

Furthermore, the grass collection container can be passed through the opening by simply moving it in the direction in which the side frame extends, so there is no need to lift the grass collection container as in the past, and the grass collection container can be easily passed through the opening. In addition to being able to be inserted and removed, the protrusion and the engagement hole can be engaged and disengaged with the weight of the grass collection container resting on the fixed frame, so there is no need to support the weight of the grass collection container as in the past. There is no work burden, and
The grass collection container can be installed and removed.

〔Example〕

As shown in FIG. 8, the riding lawn mower is equipped with a downward output shaft engine 1 at the front of the machine, a transmission case 2 at the rear of the machine, a driving operation section 3 between them, and front and rear wheels 5, 6. In between, there is a mid-mounted mower 7, and an external grass collection duct 9 that guides the grass clippings from the mower 7 to a grass collection container 8, which is a work attachment connected to the rear end of the machine. .

Next, the frame structure of the traveling aircraft will be explained. As shown in FIGS. 1 and 2, as well as FIGS. 6 and 7, a pair of left and right main frames 11 made of pipes are attached to the rear end of an engine mounting frame 10 constructed by connecting a pair of left and right angle members. 11 extends to the rear of the fuselage, and its extending ends are formed in rear opening ends 11A, 11A in a cut open state.

A flat deck 12 made of sheet metal is stretched over the upper surfaces of the left and right main frames 11, 11, and a steering mechanism support frame 14, which has a through hole 13 for a steering operation shaft, etc., is erected on the engine frame side of this deck 12. It is set up. A pair of front and rear block-shaped frames 15, 15 are formed upright at the rear of the main frames 11, 11, and together with fenders for the rear wheels 6, they constitute a support frame for the driver's seat 16. This driver's seat 16 support frame 15
On the side, a locking fixed frame 18 for a lever 17 for adjusting the cutting height of the mower 7 is provided, and a swing arm 21 operating shaft 19 for linking the operation of the lever 17 to the mower 7 is installed. There is.
Further, at the rear ends of the main frames 11, 11, a simple trailer hitch 20 is provided, which is made by welding and assembling plate materials into a channel shape.
A frame 22 for attaching the mission case 2 is provided toward the front side of the aircraft body.

Next, the transmission structure in the mower 7 is that the belt 43 is connected to the engine 1 and the input pulley shaft 23 that is
It is configured to be transmitted to a pair of left and right blade shafts 24, 24 via. In the figure, 25 is a tension pulley.

The grass collection duct 9 will be explained. As shown in FIGS. 1 and 2, the grass collection duct 9 is connected to the right rear wheel 6
A front duct 9 is connected to the mower 7 and extends from the mower 7 to the grass collecting container 8 by detouring around the outside side of the mower 7.
A, a rear duct 9C connected to the grass collection container 8, and an intermediate duct 9B made of transparent resin that connects both ducts 9A and 9C.

The conveyance state of the cut grass can be checked through this transparent duct 9B. The front end of the rear duct 9C fits the rear end of the intermediate duct 9B so that the rear end of the intermediate duct 9B can be slid relative to each other in the direction of the respective axes, and is flexible enough to allow the mower 7 to move up and down as the mowing height is adjusted. The front end of the intermediate duct 9B fits over the rear end of the front duct 9A, and is fixed to the front duct 9A with a rubber band type fastener 26. Further, the front duct 9A is formed so that its cross section changes from a circle to a rectangular shape as it approaches the mower 7.
It is connected to the mower 7 in a state where A is fitted onto the outside. A locking pin 28 protruding outward from one of the walls of the outlet 27A is fixed to this connecting portion, and a locking pin 28 is fixed to the front duct 9.
It is configured to be inserted into an insertion hole 29 formed in the side wall of A. On the other hand, at the opposite connecting portion, a connecting part that becomes a round-shaped stopper 30 in the connected state is attached to both the front duct 9A and the mower side outlet 27A, so that the front duct 9A is connected to the outlet 27A externally. The stopper 30 is attached in the fitted state, and by inserting the L-shaped pin 4 from above, the front duct 9A and the mower exterior case 27 are connected.
The connection with is completed. As shown in FIG. 5, the procedure for attaching the front duct 9A to the mower exterior case 27 is to first engage the front duct 9A side insertion hole 29 with the locking pin 28, and then This is a method of fastening the stopper 30 with the L-shaped pin 4 by horizontally rotating the pin 28 as a fulcrum.

Next, the mounting structure of the grass collecting container 8 will be explained.

As shown in FIGS. 1 to 4, a pipe support frame 31 serving as a connecting member that can be inserted into the rear opening end 11A of the main frame is connected to the main frame 11, and a fixing member that passes through both is connected to the main frame 11. It is configured to be detachable by an engagement pin 32 as a means, and a pair of left and right grass collection containers 8, 8, which will be described later, are placed and supported on the raised upper open end 31A of this support frame 31. A fixed frame 33 is connected and fixed.

In this connection and fixing structure, a pair of left and right pipe engaging portions 33a protruding downward from the fixed frame 33 are fitted into the upper open end 31A of the support frame 31. The fixed frame 33 is formed into a substantially E-shape in plan view by a U-shaped pipe frame 33A in plan view and a central channel frame 33B, and extends rearward in a cantilevered manner. The pipe frame 33A extending in parallel to the left and right and the central channel frame 33B are called side frame parts, and an opening for inserting and removing the grass collection container 8 is formed between the cantilever tips of both side frame parts. . Grass collection container 8
is inserted between the pipe frame 33A and channel frame 33B through the opening from the direction along the extending direction of the side frame part, and the cap 8A provided at the periphery of the upper end opening of the upwardly opening grass collecting container 8 is inserted into the pipe. The grass collecting container 8 is set so as to be placed and abutted from above over the entire length of the frame 33A and channel frame 33B. A plate-shaped member 34 having an engagement hole 34a bored through the mouthpiece 8A of the grass collecting container 8 extends through the grass collecting back portion and protrudes from the pipe frame 3 of the fixed frame 33.
A projecting piece 33b is provided in a protruding manner at the portion 3A, and when the grass collecting container 8 is placed on the fixed frame 33, the projecting piece 33b passes through the engagement hole 34a, and the position of the grass collecting container 8 is regulated.

Next, the opening/closing covers 35 for the left and right grass collecting containers 8, 8 will be explained. A pair of left and right brackets 3 are provided with horizontal engagement holes 36a in the lower flange portion 35A of the opening/closing cover 35 on the side of the support frame 31.
6 and 36 are fastened and fixed, and a plate piece 37 on which a headed pin 37a is fixed and protruded sideways is provided on the support frame 31, and the pin 37
By fitting and fixing a into the engagement hole 36a, the opening/closing cover 35 can swing up and down around the pin 37a. By placing the opening/closing cover 35 on the fixed frame 33 or the grass collection container 8 fitting and sliding it laterally, the pin 37a is fitted into the engagement hole 36a, and the opening/closing cover 35 is attached. A simple installation method can be used. On the other hand, a hook 38 is provided at the lower end of the opening/closing cover 35 on the side opposite to the side where the bracket 36 is present, and a stopper 39 whose one end is fixed to the channel frame 33B on the fixed frame 33 side is latched to the hook 38. , is configured to maintain the closed position of the open/close cover 35.
The opening/closing cover 35 covers the upper space of the grass collecting containers 8, 8 in a communicating state, and has a mesh body 40 stretched in the inner space to form an air exhaust passage A communicating from the upper space to the rear space. Yes, when the grass collection container 8 is full of grass clippings or when a plastic storage bag with poor ventilation is used, the net-like body 4
The air is discharged from the opening B at the rear lower end along the inner surface of the open/close cover 35. However, if a storage bag with poor ventilation is not used, the air will be exhausted from the grass collection bag.

Next, the attachment structure of the rear duct 9C of the grass collection duct to the opening/closing cover 35 will be described in detail. Fixed frame 3
A plate-shaped pedestal 41 having a recess 41a that opens upward is provided on the pipe frame 33A of No. 3, and a recess 35a that opens downward is formed in a corresponding portion of the pedestal 41 on the side surface of the opening/closing cover 35. The recessed portion 4 of the pedestal 41 is
The rear grass collecting duct 9C is inserted into the opening formed by the concave portion 35a of the cover 35 in the closed position, and is engaged between the pair of left and right protrusions on the corresponding outer peripheral surface of the rear duct 9C. A protrusion-type annular engagement portion 42 with a groove 42a is provided, and the protrusion with the cover-side recess 35a formed in the engagement groove 42a and the plate-shaped tip of the pedestal 41 with the pedestal-side recess 41a formed therein. are engaged, and the rear duct 9C is attached and fixed in a state in which it is in contact with the inner edges of both the recesses 41a and 35a.

[Another example]

(a) The fixed frame 33 may be an integrally extended support frame.

(b) The above embodiment may be applied to a walk-behind lawn mower.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the lawn mower according to the present invention, FIG. 1 is a side view showing a grass collection duct, a grass collection container, and the arrangement of the machine body, and FIG. 2 is a side view showing the grass collection duct, grass collection container,
Also, a plan view showing the arrangement of the machine body, Fig. 3 is a longitudinal sectional front view showing the connection part between the grass collection duct and the opening/closing cover/cradle, and Fig. 4 is a perspective view showing the attachment structure of the grass collection container to the machine body. Figure 5 is a plan view showing the posture of the mower and the grass collection container before connection, Figure 6 is a plan view showing the frame structure of the traveling machine, Figure 7 is a rear view showing the frame structure of the traveling machine, Figure 8 is an overall side view. 8... Grass collecting container, 8A... Cap, 31... Support frame, 33... Fixed frame, 33b... Protruding piece, 34a... Engaging hole.

Claims (1)

[Claims] 1 Support frame 31 erected from the aircraft frame
At the top of the grass collection container 8, a cap 8 is placed around the upper opening of the container 8.
A fixed frame 33 is formed which includes a pair of left and right side frame portions that extend in a cantilevered state to one side in the front and rear so as to place and support A, and the An opening is formed in which the grass collecting container 8 can be inserted and removed from the direction along the extending direction of the side frame portion, and a cap 8A is provided at the periphery of the upper end opening of the fixed frame 33 and the grass collecting container 8. is the fixed frame 33
The lawn mower is configured to be connected in a position-regulated state in the horizontal direction by engagement between a protrusion 33b provided on one of the caps 8A and an engagement hole 34a provided on the other.