JPH0420177Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention has a structure in which a
The present invention relates to a lawn mower that is provided with a grass container with an upward opening and a mower that is located at a distance from the grass container.

[Conventional technology]

In this type of lawn mower, in order to extend the rear part of the grass collection duct extending from the mower to near the grass collection container, conventionally, an upper end opening of the grass collection container is installed at the top of a support frame that is erected from the machine frame. A horizontal frame is formed by forming a pipe into an annular shape so as to place and support the cap on the periphery of the pipe, and a support part is formed in the horizontal frame. Further, while lowering the U-bolt from the horizontal frame, an annular recessed engagement groove is formed on the outer peripheral surface at the rear of the grass collection duct, and the lower part of this annular recessed engagement groove is engaged with the U-bolt. The upper part of the annular recessed engagement groove is engaged with a pipe-shaped horizontal frame, the rear part of the grass collection duct is supported by the U bolt, and the discharge opening end of the rear part of the grass collection duct is made to face into the grass collection container. (e.g. US Pat. No. 3,934,392).

[The problem that the idea attempts to solve]

In the above structure, since the U-bolt is only used as a support for the grass collection duct, the U-bolt is inserted into the outer peripheral surface of the grass collection duct and the rear part of the grass collection duct. Since a gap is formed between the container and the opening of the grass collection container, grass clippings, etc. once placed in the grass collection container sometimes leak out from the gap. In addition, the tip of the rear part of the grass collection duct suspended from the U-bolt enters the grass collection container through the opening, so when removing the grass collection container from the horizontal frame, the rear part of the grass collection duct etc. The structure was difficult to remove, requiring some effort to extract it from the container.

The purpose of this invention is to improve the support form of the rear part of the grass collection duct,
The object of the present invention is to provide a grass collection container which can be easily attached and removed by suppressing the leakage of grass clippings by adding a simple modification to the supporting form of the grass collection container.

[Means to solve the problem]

The characteristic structure of the present invention is as follows: A pair of left and right side frame parts extend in a cantilevered manner so as to place and support the cap around the upper opening of the grass collecting container on the upper part of the support frame that stands up from the aircraft frame. An opening is formed between the extending ends of both side frame parts, through which a grass collection container can be inserted and removed from the direction along the extending direction of the side frame parts; A plate-like pedestal having a recess that opens upward is provided on the upper surface thereof, and a recess that opens downward is provided on a wall surface of the opening/closing cover for the grass collecting container corresponding to the pedestal. The lower half of the recess is configured to be in close contact with the side surface of the pedestal, and the mower extends from the mower into an opening formed by the recess of the pedestal and the recess of the cover in the closed position. a point into which the rear part of the grass collection duct is tightly inserted; and an annular engagement groove and an annular engagement protrusion that fit and engage with each other on the rear outer peripheral surface of the grass collection duct and the inner edges of the two recesses. There are two points in which an engaging portion is formed, and the functions and effects thereof are as follows.

[Effect]

In other words, from the characteristic configuration, by forming an annular engagement portion consisting of an annular engagement groove and an annular engagement protrusion that fit into each other, a labyrinth-like ventilation path can be formed, and this ventilation path can be In addition to exhibiting a sealing function against grass debris and dust, the pedestal is formed into a plate shape due to its characteristic configuration.
The opening/closing cover and the pedestal can seal the area other than the opening where the grass collection duct is inserted, and the sealing performance can be improved compared to the conventional structure that only uses U bolts. Since it is a part, it also has a positioning function with respect to the duct.

Moreover, due to the characteristic configuration, the grass collecting container can be attached and removed through the opening formed between the extending ends of both side frame parts along the extending direction of the side frame parts. By cooperating with the positioning of the rear cradle of the grass collection duct above the base of the grass collection container mounted on the side frame, the grass collection container can be attached and removed easily. This can be done while keeping it on the stand.

[Effect of idea]

By forming the pedestal that supports the rear part of the grass collection duct into a plate shape, it is possible to form a grass collection duct support structure with a high sealing function in cooperation with the opening/closing cover. By setting the direction of attaching and removing the grass collecting container above the grass collecting container toward the side frame portion, the grass collecting container can be easily and quickly attached 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, and a driving operation section 3 between them. 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 1 made of sheet metal is mounted on the upper surface of the left and right main frames 11, 11.
2 is stretched, and a through hole 1 for the steering operation shaft is provided on the engine frame side of this deck 12.
Steering mechanism support frame 1 with 3 holes
4 are erected. The main frames 11, 11
At the rear of the is a pair of front and rear block-shaped frames 15,
15 is formed upright and constitutes a support frame for the driver's seat 16 together with a fender for the rear wheel 6. On the side of this driver's seat 16 support frame 15,
A locking and fixing 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 with the mower 7 is provided. 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, and from this hitch 20 toward the front side of the fuselage, a transmission case 2 mounting frame 22 is installed. is provided.

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. Moreover, the front duct 9
A is formed so that its cross section changes from a circle to a rectangular shape as it approaches the mower 7, and the mower 7
connected to. This connection part has the outlet 27
A locking pin 28 that projects outward is fixed to one of the A walls and is configured to be inserted into an insertion hole 29 formed in the side wall of the front duct 9A. 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 fastener 30 is attached in the fitted state, and the L-shaped pin 4 is inserted from above, thereby completing the connection between the front duct 9A and the mower exterior case 27. 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 collection container 8 will be explained. 1st
As shown in the figures or FIG.
1, it is configured to be detachable by an engaging pin 32 as a fixing means that passes through both, and the left and right sides (described later) A fixed frame 33 for mounting and supporting a pair of grass collection containers 8, 8
are connected and fixed. In this connecting and fixing structure, a pair of left and right pipe engagement parts 33a projecting downward from the fixed frame 33 are fitted into the upper open end 31A of the frame 31. This fixed frame 3
3 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. Here, the pipe frame 33A and the central channel frame 33B are called a side frame part, and an opening is formed between the rear ends of the pipe frame 33A and the channel frame 33B, and the grass collection container 8 is inserted through this opening. The insertion and removal direction is also set in the extending direction of the side frame portion. Grass collection is carried out so that the cap 8A provided at the periphery of the upper end opening of the upward-opening grass collection container 8 is placed and in contact with the fixed frame 33 from above over the entire length of the pipe frame 33A and channel frame 33B. Container 8 is set. A plate-like member 34 having an engagement hole 34a bored through the mouthpiece 8A of the grass collection container 8 extends through the grass collection back portion, and a projecting piece 33b is provided on the pipe frame 33A portion of the fixed frame 33. When the grass collecting container 8 is placed on the fixed frame 33, the protruding piece 33b
is penetrated by 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. The opening/closing cover 35 is configured to maintain the closed position. The opening/closing cover 35 covers the upper space of the grass collecting containers 8, 8 in a communicating state, and a net-like body 40 is stretched in the inner space to form an air exhaust path A communicating from the upper space to the rear space, When the grass is full of grass clippings or when a garbage storage bag with poor ventilation is used in the grass collection container 8, air is exhausted from the net-like body 40, and an opening B at the rear lower end is used along the inner surface of the opening/closing cover 35.
It is configured to exhaust air from the However, when the storage bag is not used, the air is exhausted from the grass collecting 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
On the upper surface of the pipe frame 33A of No. 3, a plate-shaped pedestal 41 with a concave portion 41a that opens upward is erected upward, and a side surface of the opening/closing cover 35 is provided with a pedestal 41 facing downward on the wall surface corresponding to the pedestal 41. A recess 35a is formed that opens to the bottom, and the lower half of the recess 35a is brought into contact with the side surface of the pedestal 41. A protrusion is provided in the recess 35a, and the upper end surface of the recess 41a of the plate-shaped pedestal 41 and the opening/closing cover 35 are directed downward. The grass collection rear duct 9C is inserted into the opening formed by the recess 41a of the pedestal 41 and the recess 35a of the cover 35 in the closed position, forming an annular engagement projection with the projection. , an annular engagement groove 42a is formed between the pair of left and right protrusions on the corresponding outer circumferential surface of the rear duct 9C, and the annular engagement groove 42a is engaged in the engagement groove 42a. Configure a positioning structure. Here, the annular engagement groove 42a and the annular engagement protrusion are referred to as an annular engagement portion 42 that engages with each other.

[Another example]

B. The annular engaging portion 42 may be formed into a single protrusion, and correspondingly, engagement grooves may be provided in both the recesses 41a and 35a in which the single protrusion engages.

○B The above embodiment may be applied to a walk-behind lawn mower.

○C The opening/closing cover side recess 35a and the pedestal side recess 4
At least one of 1a may be in contact with the tip of the protrusion of the duct-side annular engaging portion 42.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[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. 7... Mower, 8... Grass collection container, 8A... Cap, 9... Grass collection duct, 31... Support frame,
35...cover, 35a...recess, 41...cradle, 41a...recess, 42...annular engagement part, 42
a...Annular engagement groove.

Claims (1)

[Claims for Utility Model Registration] A lawn mower in which a grass collecting container 8 with an upward opening is disposed at one end in the longitudinal direction of the traveling body, and a mower 7 is arranged at a position away from the grass collecting container 8. At the top of the support frame 31 that stands up from the aircraft frame, there is a cap 8A around the upper opening of the grass collecting container 8.
A pair of left and right side frame portions are provided that extend in a cantilevered manner so as to place and support the grass collecting container 8 between the extending end portions of both side frame portions. A recess 41 is formed in the upper surface of the side frame portion and opens upward in the upper surface of the side frame portion.
A plate-shaped pedestal 41 having a shape of 1.a is erected upward, and an opening/closing cover 3 for the grass collecting container 8 is provided.
A recess 35a opening downward is provided in the wall surface corresponding to the pedestal 41 in 5, and the lower half of the recess 35a is configured to come into close contact with the side surface of the pedestal 41, and the recess 41a of the pedestal 41 The rear part of the grass collection duct 9 extended from the mower 7 is tightly inserted into the opening formed by the recess 35a of the cover 35 in the closed position.
A lawnmower in which an annular engagement part 42 consisting of an annular engagement groove 42a and an annular engagement protrusion that engage with each other is formed on the rear outer circumferential surface and the inner edges of both the recesses 41a and 35a.