Mower unit

Patent metadata

Field	Value
Publication number	US-11937535-B2
Application number	US-202117348058-A
Country	US
Kind code	B2
Filing date	Jun 15, 2021
Priority date	Dec 23, 2020
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

Provided are blades 22R, 22C, 22L rotatably driven about rotational axes XL, XC, XR to be able to cut grass on the ground surface, a housing covering the blades 22R, 22C, 22L and having a lower face thereof opened, a water feeding section provided outside the housing, a water discharging section 54 provided inside the housing for discharging cleaning water fed to the water feeding section, and a water feeding pipe 55 connected to/between the water feeding section and the water discharging section 54. The water discharging section 54 discharges water toward an inner wall face of the housing.

First claim

The invention claimed is:

1. A mower unit comprising:
a blade rotatably driven about a rotational axis to be able to cut grass on the ground surface;
a housing covering the blade and having an open lower face;
a water feeding section provided outside the housing;
a water discharging section provided inside the housing for discharging cleaning water fed to the water feeding section; and
a water feeding pipe connected between the water feeding section and the water discharging section,
wherein the water discharging section discharges water toward an inner wall face of the housing,
wherein, inside the housing, there is provided a vertical wall portion having an arcuate shape along an outer shape of a rotational trajectory of the blade,
wherein the water discharging section is provided at a portion located in a space formed between the vertical wall portion and a lateral wall of the housing located on the side opposite the side where the blade is located,
wherein the water feeding pipe includes a main water feeding pipe connected to the water feeding section and a branch water feeding pipe branching from the main water feeding pipe and connected to the water discharging section,
wherein the branch water feeding pipe is disposed in the space,
wherein in an outer wall face of the housing, there is provided a protection portion for protecting the water feeding section, and
wherein an upper end of the protection portion is higher than an upper end of the water feeding section.

2. The mower unit of claim 1 , wherein the water discharging section discharges water toward a ceiling face of the inner wall face.

3. The mower unit of claim 1 , wherein the water discharging section discharges water toward at least a portion of the inner wall face overlapped with the rotational trajectory of the blade as viewed in a plan view.

4. The mower unit of claim 1 , wherein:
the main water feeding pipe includes a branch connecting portion formed integrally with the main water feeding pipe, to which the branch water feeding pipe is connected; and
the branch connecting portion is provided under an inclined state progressively away from the main water feeding pipe from a branching point toward a downstream side in a water flowing direction of the main water feeding pipe.

5. The mower unit of claim 1 , wherein the water feeding section is provided upwardly of the housing and on one side in a width direction of the housing.

6. The mower unit of claim 5 , wherein:
the protection portion includes a first protection member and a second protection member disposed adjacent the water feeding section;
the first protection member and the second protection member are disposed such that the water feeding section is located between the first protection member and the second protection member as viewed in a plan view; and
heights of upper ends of the first protection member and the second protection member are higher than a height of an upper end of the water feeding section.

7. The mower unit of claim 1 , wherein the water feeding section is configured to discharge water toward the direction along a flowing direction of air current generated in association with rotation of the blade.

8. The mower unit of claim 1 , wherein:
there is provided a support member for supporting the water discharging section to the housing; and
the support member has an elongate hole for insertion of a bolt for fixing and fastening the support member to the housing, the support member being adjustable in a posture within the range of the hole of the elongate hole.

9. The mower unit of claim 1 , wherein the water feeding section is provided in a front side wall of the housing.

10. A mower unit comprising:
a blade rotatably driven about a rotational axis to be able to cut grass on the ground surface;
a housing covering the blade and having an open lower face;
a water feeding section provided outside the housing;
a water discharging section provided inside the housing for discharging cleaning water fed to the water feeding section; and
a water feeding pipe connected between the water feeding section and the water discharging section,
wherein the water discharging section discharges water toward an inner wall face of the housing,
wherein, inside the housing, there is provided a vertical wall portion having an arcuate shape along an outer shape of a rotational trajectory of the blade,
wherein the water discharging section is provided at a portion located in a space formed between the vertical wall portion and a lateral wall of the housing located on the side opposite the side where the blade is located,
wherein the water feeding pipe includes a main water feeding pipe connected to the water feeding section and a branch water feeding pipe branching from the main water feeding pipe and connected to the water discharging section,
wherein the branch water feeding pipe is disposed in the space, and
wherein in an outer wall face of the housing, there is provided a protection portion for protecting the water feeding section, the protection portion including two bar-like members both disposed on one side in a width direction of the housing.

Assignees

• Kubota Kk

Inventors

• Takaoka Masaki
• Nakao Junki
• Mihara Akihito
• Matsuoka Yusaku
• Hirotsu Yuki

Classifications

• A01D34/003 Primary

  Means for cleaning the machine · CPC title

• A01D34/06

  with cutters at the side · CPC title

• A01D2101/00

  Lawn-mowers · CPC title

• A01D34/66

  with two or more cutters · CPC title