JP4334417B2 - Grass mower - Google Patents

Description

  The present invention relates to a grass collecting apparatus for a grass mower configured so that mowing grass from a mower equipped on a traveling machine body is put into a grass collection container disposed at the rear of the machine body and collected.

As a grass collecting device for a mower, for example, as shown in Patent Document 1, a duct extending from a mower is connected to a support frame provided at the rear of the machine body, and a collecting device configured in a box shape is used. What supported the grass container on the support frame is known.
JP 2002-262635 A

  The grass collecting container used in the grass collecting apparatus has a structure in which a ventilationable wall member is connected to the upper surface, the rear surface, and the left and right side surfaces of the frame, and a non-ventable bottom plate is connected to the bottom surface and assembled in a box shape. In order to obtain a plurality of kinds of collecting containers having different capacities, it is necessary to prepare a large number of parts having different dimensional specifications, resulting in high costs.

  The present invention has been made paying attention to such points, and has as its main object to provide a grass collecting apparatus that can produce a plurality of types of grass collecting containers having different capacities at low cost.

A first invention is a grass collecting apparatus for a grass mower configured to collect and collect the mowing grass from a mower equipped on a traveling machine body into a grass collection container provided at the rear of the machine body,
The grass collecting container is composed of a container main portion having a cutting grass insertion port on the front and opening the entire left and right sides, and left and right side covers connected to the left and right of the container main portion, and the left and right side cover front portions. The left and right side cover front parts are extended to the left and right frames, and the left and right frames are extended from the front part of the container main part to both laterally outer sides. It is characterized in that the bulging portions are connected to the lateral outer sides of the two.

  According to the said structure, the multiple types grass collection container from which capacity | capacitance differs can be comprised by connecting the side cover of the same specification with the multiple types container main part from which width differs.

Therefore, according to the first invention, it is possible to produce a plurality of types of grass collecting containers at a low cost with few types of parts.
In addition, since the side cover is shared, it is possible to obtain a collection container of various specifications with a uniform external design, and it is easy to ensure the appearance and the external appearance balance when attached to the traveling machine body.

According to a second invention, in the first invention,
The container main part is made of a metal material, and the left and right side covers are made of a resin material.

  According to the above configuration, the container main part directly receives the transported object that has jumped out from the rear end of the duct, so hard foreign objects such as pebbles and branches may collide with force, but a highly rigid metal Because it is made of wood, it will not be damaged. In addition, since there is little risk of hard foreign objects colliding with the side cover, there is no problem even if it is made of resin material, rather, it is easy to mold into any shape and it is easy to bring about an excellent design appearance Become.

  FIG. 1 is an overall side view of a mower equipped with a grass collecting apparatus according to the present invention, and FIG. 2 is an overall plan view thereof. This mower is a link comprising a front link 4a and a rear link 4b at the lower part of a riding-type traveling machine body 3 configured as a four-wheel drive type in which a steerable front wheel 1 and a fixed-fixed rear wheel 2 are respectively driven. A three-blade mower 5 is suspended and connected via a mechanism 4 so that it can be moved up and down, and the grass cut by the mower 5 is transported by wind to the rear of the aircraft via a duct 6 located at the right side of the lower portion of the aircraft. And it is comprised so that it may collect | recover with the grass-collecting apparatus 7 with which the body rear part was equipped.

  The grass collecting device 7 is composed of a vertical wall-like support frame 11 connected and fixed to the rear end of the traveling machine body 3, and a grass collecting container 12 supported rotatably and detachably on the frame. As shown in FIG. 4, the rear end portion of the duct 6 is connected to a communication port 13 formed at the right side of the support frame 11.

  The support frame 11 is formed with slit-like vent holes 14 for escaping winds for carrying out the grass cutting, located on the left and right sides of the communication port 13, and a pair of left and right container support arms 15 for connecting and supporting the grass collection container 12. It extends in a cantilevered direction.

As shown in FIG. 6, the grass collection container 12 is composed of a container main portion 12a having an upper surface, a back surface, and a bottom surface, and side covers 12b connected to the left and right of the container main portion 12a. The container main part 12a and the side cover 12b are respectively connected by bolts to the internal frame 16 formed by combining and connecting the two, so that the entire container is formed in a box shape with the entire front surface opened. The left and right inner frames 16 and 16 are provided with frames 16A and 16A extending laterally outward from the front portion of the container main portion 12a. A vent portion 17 having a large number of pores formed in parallel at the rear portion of the container main portion 12a is formed, and a vent portion 18 having a large number of pores formed in parallel at the side cover 12b is also formed. The grass cutting air blown into the air is configured to escape from the ventilation portions 17 and 18 of the grass collection container 12 and the ventilation holes 14 of the support frame 11.

  Since the container main portion 12a directly receives the conveyed product that has jumped out from the rear end of the duct 6, the container main portion 12a has a sheet metal structure so as not to be damaged by collision of hard foreign matter such as pebbles and branches. The side cover 12b is configured as a resin molded product whose shape can be easily set because there is little risk of hard foreign objects colliding with the side cover 12b. And by connecting a common side cover 12b to a plurality of types of container main parts 12a having different widths, a plurality of specification collection containers having different capacities can be manufactured at low cost.

  The grass collection container 12 is connected to and supported by a container support arm 15 so as to be rotatable and detachable. The support structure will be described below.

As shown in FIGS. 5 and 7, lateral support shafts 19 are fixed to the front ends of the left and right container support arms 15 as container connection parts, and the inner frame 16 in the grass collection container 12 is fixed. An engagement member 20 that engages with the support shaft 19 is fixed to the left and right sides of the support shaft 19, and an engagement lock member 21 that prevents the engagement member 20 from coming off the support shaft 19 is fixed to the engagement member 20. Is equipped. The engaging member 20 is formed with an engaging recess 20a that opens forward, and the grass collecting container 12 can be attached and detached by engaging and disengaging the engaging recess 20a with the support shaft 19 from the rear. ing. Further, the engagement lock member 21 is formed with an engagement recess 21a that opens downward, and the engagement lock member 21 is engaged with the support shaft 19 so that the engagement member 20 is engaged. The recess 20a is blocked, and the engagement member 20 is prevented from detaching rearward from the support shaft 19.

Thus, the grass collection container 12 connected and supported by the fulcrum portion of the container support arm 15 using the engagement member 20 and the engagement lock member 21 can be rotated up and down around the support shaft 19. The container front surface is connected to the support frame 11 by rotating to the mowing grass collecting posture (see FIG. 7) communicating with the duct 6, and the container front surface is separated from the support frame 11 downward by rotating upward. It is comprised so that it may become the open mowing grass discharge attitude | position (refer FIG. 9).

Locking mechanism 23 is provided in a lower portion of the support frame 11 for connecting fixed cut grass collecting posture to the supporting frame 11 a grass collection container 12 of the grass clippings collecting posture. The lock mechanism 23 includes a pair of left and right hook-like lock members 25 that are pivotally supported by a support frame 11 and supported by a horizontal fulcrum shaft 24 that is horizontally supported. The left and right lock metal fittings 26 provided at the lower end of the front portion of the frame 16 are configured, and each lock member 25 is locked in a state where the lock metal fitting 26 is placed and supported on a receiving metal fitting 27 provided at the lower part of the support frame 11. By engaging with the metal fittings 26 from above, the grass collection container 12 in the mowing grass collection posture is connected and fixed to the support frame 11.

  Here, the lock member 25 is pivotally biased downward by the spring 28, that is, in the lock direction, and the lower end of the operation rod 29 as an operation member for unlocking that is supported by the support frame 11 so as to slide up and down. The lock member 25 can be operated in the unlocking direction by pulling the operating rod 29 upward against the spring 28.

  Further, an upper part of the support frame 11 is provided with a lock release holding mechanism 30 that holds the operation rod 29 that has been unlocked in a lock release position against a lock biasing force. As shown in FIGS. 10 and 11, the unlocking holding mechanism 30 includes a locking metal 31 fixed to the operation rod 29 and a leaf spring holding member 32 attached to the support frame 11. When the rod 29 is pulled up to the unlocking position, the holding member 32 is elastically engaged with the engagement recess 31a formed in the engagement fitting 31, and the operation rod 29 is prevented from returning and moving downward. 23 is held in the unlocked state.

  Thus, once the operation rod 29 is pulled up, the unlocked state is maintained even when the operation rod 29 is released, and the container rotating operation handle protruding from the upper surface of the grass collection container 12 is maintained. The grass collection container 12 can be rotated to the grass cutting discharge posture by tilting 33 forward. The handle 33 is inserted and supported by a vertical boss 34 provided in the inner frame 16 so as to be slidable up and down. Normally, the handle 33 is slid and stored downward, and the handle 33 is moved upward when the container is rotated. It can be pulled out to be used as a long handle.

When the unlocking holding mechanism 30 is operated as described above and the grass collection container 12 is rotated to the mowing grass discharging posture, the unlocking holding function of the unlocking holding mechanism 30 is automatically released and the lock mechanism 23 functions again. It is supposed to return to the state. That is, when turning the grass collection container 12 grass clippings discharge direction while being held by pulling the operating rod 29, as shown in FIG. 11 (b), (c), the inner frame 16 of grass catcher 12 The provided operating piece 35 abuts against a cantilevered free end 32a formed on the holding member 32 of the unlocking holding mechanism 30 to deform the holding member 32 in the disengagement direction, thereby releasing the unlocking holding mechanism. When the function 30 is released and the operation rod 29 is allowed to move downward, the lock member 25 is rotated by the spring 28 to the locked state. In this state, when the grass collecting container 12 is further brought closer to the cut grass collection posture, the lock fitting 26 comes into contact with the downward inclined cam surface 25 a formed at the tip of the lock member 25, and the lock member 25 resists the spring 28. The lock member 25 is automatically engaged with the lock fitting 26 when the grass collecting container 12 reaches the cut grass collection posture by being pushed up and rotated. As shown in FIG. 11 (a), when the grass collecting container 12 is rotated from the mowing grass discharging posture to the mowing grass collecting posture, the operation piece 35 does not interfere with the free end portion 32a of the holding member 32 that has been elastically restored. Will pass.

  The operating rod 29 and the handle 33 are each arranged to be biased to the right side of the grass collecting device 7, and the operator performs the lifting operation of the operating rod 29 and the grass container rotating operation with the handle 33. You can do this by standing on the right side of 7.

  The grass collection container 12 supported so as to be rotatable as described above can be detached from the support frame as follows. That is, the left and right engaging lock members 21 provided in the grass collection container 12 are respectively connected to the lower ends of the arch-shaped disengagement operation tools 37 inserted from the container upper surface so as to be vertically operable, The engagement lock member 21 is always slid downward by a compression coil spring 38 that is externally fitted to the leg portion of the release operation tool 37. Further, an arch-shaped handle 39 for detaching the container is fixed on the upper surface of the grass collection container 12, and the handle 39 and the operation portion 37 a of the disengagement operation tool 37 are arranged so as to be able to be held together.

  According to the above configuration, in a state in which the grass collection container 12 is coupled to the support frame 11 in the grass cutting collection posture (see FIG. 7), the handle 39 that protrudes from the upper surface of the container is gripped and the operation unit of the disengagement operation tool 37 is held. As shown in FIG. 12, the engagement lock member 21 is moved upward to be disengaged from the support shaft 19 and the engagement recess 20a of the engagement member 20 is opened forward as shown in FIG. It becomes a state. By moving the handle 39 rearward in this state, the entire grass collection container 12 is rotated rearward with the engaging portion of the lock mechanism 23 as a fulcrum, and the engagement member 20 is detached from the support shaft 19. It is separated from the fulcrum portion of the container support arm 15. Thereafter, the grass container 12 can be removed from the support frame 11 by moving the grass container 12 rearward to release the lock metal fitting 26 from the metal fitting 27. When the removed grass collection container 12 is connected to the support frame 11, the above detachment operation may be performed in reverse.

  [Another Example]

  Both the container main portion 12a and the side cover 12b of the grass collection container 12 can be configured in a sheet metal structure. In this case, the plate thickness of the side cover 12b may be thinner than the plate thickness of the container main portion 12a.

Overall side view of mower Overall side view of mower Side view showing the container open state and the container removal state in the grass collecting apparatus Rear view showing support frame in grass collecting device Vertical rear view of grass collection container Exploded perspective view of grass collection container Vertical side view of the grass collector Longitudinal side view showing the grass collecting device in a state where the rotation lock is released Longitudinal side view showing a state in which the grass container is opened and rotated Perspective view of unlocking holding mechanism Side view showing operation of unlocking holding mechanism Longitudinal side view showing the grass collector unlocked for removing the grass container Longitudinal side view with grass collection container removed Exploded perspective view showing the rotation fulcrum part of the grass collection container

Explanation of symbols

3 traveling machine body 5 mower 12 grass collecting container 12a container main part 12b side cover
16A frame

Claims (2)

A grass-collecting device for a mower configured to collect and collect the mowing grass from the mower equipped on the traveling aircraft in a grass-collecting container deployed at the rear of the aircraft,
The grass collecting container is composed of a container main part having a cutting grass insertion port on the front and opening the entire left and right sides, and left and right side covers connected to the left and right of the container main part ,
The left and right side cover front portions are configured to bulge laterally outward and the front surface is open,
The mowing is characterized in that left and right frames extend from the front part of the container main part to both laterally outer sides, and the left and right frames are connected to portions that bulge laterally outside the front part of the left and right side covers. Machine grass collector.   The grass collecting apparatus for a mower according to claim 1, wherein the container main part is made of a metal material, and the left and right side covers are made of a resin material.

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