JPH08280225A - Housing structure of mower - Google Patents

Abstract

PURPOSE: To provide a housing structure of a mower capable of suppressing remaining not mown turf and the winding round of the turf to wheels by forming a mown turf discharging passage by a rotating blade rotating around the center of vertical shaft in contiguity to a front wall of the housing and also its outlet port in the state of locating one of the sides of the housing, and arranging rollers for climbing over obstacles in the front and at left and right of the housing. CONSTITUTION: This housing structure of a mower comprises forming an end part 9 of a front wall 1a of the housing at the other side of a mown turf discharging passage into front and rear double walls, the outer part wall 9a of the double wall-type front wall end part 9 into the shape of almost straight progress to the progressing direction of the mower and also an inner part wall 9a into the shape of almost going along with the locus of the tip of a rotating blade 3 and arranging one of rollers 10 for climbing over obstacles into the inside of the double wall type front wall end part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a cut grass discharge path formed by a rotary blade which is rotatable about a longitudinal axis and is rotatable inside a housing so as to be adjacent to a front wall of the housing. The present invention relates to a mower housing structure, which is formed on one lateral side of a housing and has rollers for passing over obstacles which prevent grounding of left and right ends of the housing, which are provided on left and right front portions of the housing.

[0002]

2. Description of the Related Art Conventionally, the entire front wall of a housing is formed as a single wall, and the end of the front wall of the housing opposite to the outlet of the cut grass discharge path is formed into a curved shape substantially along the locus of the tip of a rotary blade. The rotary blade is constructed so that the cut grass can be discharged smoothly, and the obstacle riding roller is arranged so as to project in front of the front wall of the housing [JP-A-7-1].
No. 6014].

[0003]

However, since the end of the front wall of the housing on the side opposite to the outlet of the cut grass discharge passage has a curved shape substantially along the locus of the tip of the rotary blade, that is, a shape that faces forward and laterally outward. , As the mower progresses, the grass may be pushed down to the lateral outer side of the housing, and the grass pushed down to the lateral outer side may cause uncut.
Since the rollers for overcoming obstacles protrude forward of the front wall of the housing, there is a possibility that the lawn may wind around the wheel mounting bracket, and there is room for improvement in terms of improving lawn mowing performance and preventing lawn wrapping.

An object of the present invention is to leave uncut material at the end of the housing on the side opposite to the outlet of the cut grass discharge path and to install the obstacle overcoming roller mounting bracket without impairing the cut grass discharge function of the rotary blade. The point is to prevent turf winding.

[0005]

According to a first aspect of the present invention, there is provided a cut grass discharge path formed by a rotary blade that is rotatable about a longitudinal axis and is rotatable inside a housing, adjacent to a front wall of the housing. In the mower, the exit of the cut grass discharge path is formed on one lateral side of the housing, and obstacle passing rollers for preventing grounding of the left and right end portions of the housing are provided on the left and right front portions of the housing. The front wall of the housing opposite to the outlet of the cut grass discharge path is formed as a front and rear double wall, and the outer wall of the front end of the double wall is substantially orthogonal to the mower traveling direction. And the inner wall of the double wall-shaped front wall end portion is curvedly formed into a shape substantially along the tip locus of the rotary blade, and one of the obstacle climbing rollers is connected to the double wall-shaped front wall end portion. Place it inside the In the Rukoto.

According to a second aspect of the invention, in addition to the first aspect of the invention, the outer wall of the end portion of the double-walled front wall is integrally molded with the housing, and
The inner wall of the end portion of the double-walled front wall is formed separately from the housing and attached inside the housing.

[0007]

According to the structure of the first aspect, the housing front wall end opposite to the cut grass discharge path outlet is formed as a front and rear double wall, and the outer wall is made substantially orthogonal to the mower traveling direction. The grass can be pushed forward of the housing as the mower advances so that it cannot escape from the cutting area of the rotary blade, and uncut residue at the end of the housing can be sufficiently suppressed.

Further, since the obstacle passing roller is formed in a curved shape substantially along the tip locus of the rotary blade, the rotary blade allows the cut grass to flow smoothly in the cut grass discharge path and be discharged well.

Further, since one of the obstacle climbing rollers is arranged so as to enter the inside of the double-walled front wall end, the action of the double-walled front wall end of the one obstacle climbing roller is performed. It is possible to sufficiently suppress turf winding around the mounting bracket.

According to the second aspect of the present invention, the uncut portion at the end of the housing is kept without impairing the cut grass discharging function, and
In addition to suppressing turf wrapping around the mounting bracket of the roller for climbing over obstacles, the outer wall of the front end of the double-walled front wall is integrated with the housing, and the inner wall is separated from the housing. The housing can be manufactured easily, and the surface is smooth and the appearance is good.

[0011]

According to the first aspect of the present invention, the uncut portion at the end of the housing is left without impairing the cut grass discharging function,
Further, it has become possible to provide a mower excellent in the lawn mowing function and the lawn wrapping suppressing function, which can suppress the lawn wrapping around the mounting bracket of the obstacle riding roller.

According to the invention of claim 2, the effect of the invention of claim 1 is exhibited, and it is possible to form the housing with a smooth surface and a good appearance, which enhances the commercial value. It becomes effective in.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a cut grass discharge path 2 is formed inside a housing 1 made of an iron plate having an opening at the lower side in a state of being adjacent to a front wall 1a of the housing, and driven and rotated about a vertical axis. Three freely rotatable rotary blades 3 are arranged in parallel along the cut grass discharge path 2, and pulleys 4 are attached to the drive shafts of the blades 3, respectively, and a transmission belt 5 is attached to the three pulleys 4.
And the tension pulley 6 acts on the transmission belt 5 to transmit the power from the PTO shaft of the riding traveling type machine to the input shaft 7 that is interlocked with the central blade 3 and discharge the cut grass. The outlet 2a of the passage 2 is formed on one lateral side of the housing 1, and the grass is cut along with the drive rotation of the blade 3 and the cut grass is cut and discharged from the grass discharge passage outlet 2a to the outside of the housing 1. A mower suitable for lawn mowing on a golf course is formed.

An end portion 9 of the housing front wall 1a opposite to the cut grass discharge path outlet 2a (left side in the drawing) is formed as a front and rear double wall, and an outer wall 9a of the double wall-shaped front wall end portion 9 is formed. Is formed in a shape that is substantially orthogonal to the direction of movement of the mower, and the grass is pushed forward of the housing 1 as the mower advances so that it does not escape from the cutting area of the blade 3 and the uncut portion at the end of the housing 1 is removed. It is configured to suppress. Then, the inner wall 9b of the double wall-shaped front wall end portion 9 is curvedly formed into a shape that substantially follows the locus of the tip of the blade 3, and the blade 3 is used to smoothly flow the cut grass to flow smoothly in the cut grass discharge path 2 for good discharge. It is configured to do. Further, the outer wall 9a is integrally molded with the housing 1, and the inner wall 9b is molded separately from the housing 1, so that the housing 1 is easy to manufacture and has an excellent appearance.

Obstacle passing roller 1 for preventing the left and right ends of the housing 1 from coming into contact with the ground or a raised object to be damaged.
0 are provided on the left and right sides of the front part of the housing 1, and as shown in FIG. 2, the left-hand obstacle crossing roller 10 is disposed inside the double wall-shaped front wall end 9 and is arranged. The action of the portion 9 is configured to suppress the turf winding around the mounting bracket of the one roller 10 for overcoming obstacles.

A pair of left and right covers 11 for separately covering the pulleys 4 on the left and right ends from above are provided, and as shown in FIG. 2, a front end side bent portion 11a of the cover 11 is fixed to a pipe 12 laterally welded and fixed on the housing 1. , And the projections of the rear plate portion 11b of the cover 11 are fitted into the holes of the pair of left and right engaging members 13 which are erected at positions near the rear portion of the housing 1, so that the covers 11 can be easily detached by elastic deformation. It is configured as follows.

[Other Embodiments] The number of blades 3 installed can be changed appropriately, and the mower can be a front mount type, a mid mount type,
It can be used in any form such as walking type. In the invention of claim 1, the outer wall 9a of the double-walled front wall end 9 may be formed separately from the housing 1, and the inner wall 9b may be formed integrally with the housing 1. In the invention of claim 1, when the housing 1 is manufactured by aluminum die casting, the outer wall 9a and the inner wall 9b of the double wall-shaped front wall end 9 can be integrally formed with the housing 1. In order to detachably attach the covers 11 separately covering the left and right pulleys 4 from above, the front end side bent portion 11a of the cover 11 is attached to the pipe 12 laterally welded and fixed on the housing 1 as shown in FIG. Then, the cover mounting member 14 in the shape of a bent rod that is erected on the housing 1 is covered.
The cover mounting member 1 is inserted into the hole of the rear side plate portion 11b.
The rear plate portion 11b is clamped and fixed by the flange portion 14a of No. 4 and the nut 15 screwed to the cover attachment member 14, and the round bar portion of the cover attachment member 14 suppresses the vibration of the transmission belt 5 from abutting. May be configured as
Further, the cover mounting member 14 may be disposed in the middle of the left and right covers 11 as a material for suppressing the vibration of the transmission belt 5 and mounted on the housing 1. As shown in FIGS. 4 and 5, the left and right engaging portions 16 formed integrally with the rear plate portion 11b of the cover 11 are engaged in the holes of the housing 1, and the stud bolts 17 and the disc springs 18 provided upright on the housing 1 are installed. Alternatively, the front end of the cover 11 may be clamped and fixed between the housing 1 and the cover retainer 20 by the nut 19.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of mower.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a vertical cross-sectional side view of essential parts showing another embodiment 1 of the cover mounting structure.

FIG. 4 is a vertical cross-sectional side view of essential parts showing another embodiment 2 of the cover mounting structure.

FIG. 5 is a perspective view showing a part of a cover according to a second embodiment of the cover mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 1a Housing front wall 2 Cutting grass discharge path 2a Cutting grass discharge path exit 3 Rotating blade 9 Double-walled front wall end 9a External wall 9b Inner wall 10 Roller for overcoming obstacles

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Kawahara 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (2)

[Claims] 1. A housing (1) is provided with a cut grass discharge passage (2) formed by a rotary blade (3) rotatable about a longitudinal axis.
Is formed adjacent to the front wall (1a) of the housing, and the outlet (2a) of the cut grass discharge path (2) is formed on one lateral side of the housing (1).
Obstacle overrun roller (1
0) provided on the left and right of the front part of the housing (1), the front end (9) of the housing front wall (1a) opposite to the cut grass discharge path outlet (2a) is doubled in the front-rear direction. The outer wall (9a) of the double wall-shaped front wall end (9) is formed in a wall so as to be substantially orthogonal to the mower traveling direction, and the double wall-shaped front wall end (9) is formed. The inner wall (9b) of the rotary blade (3) is curved so as to substantially conform to the locus of the tip of the rotary blade (3), and one of the rollers for climbing over the obstacle (10) is connected to the end of the double wall-shaped front wall (9). The mower housing structure is located inside. 2. The mower according to claim 1, wherein the outer wall (9a) of the double-walled front wall end (9) is integrally molded with the housing (1) and the double-walled front wall. A mower housing structure in which the inner wall (9b) of the end portion (9) is formed separately from the housing (1) and attached inside the housing.