JPH0224424Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a lawn mower handle attachment structure.

(Prior Art) Conventionally, a walk-behind power lawn mower is provided with a handle that extends rearward from a main body portion that includes a cutter blade and an engine that drives the cutter blade.
The handles are usually attached to both rear sides of the housing of the main body portion. The handle is generally straight bar-shaped. Therefore, if an attempt is made to fix the end portion on the housing side to the housing while remaining in the shape of a straight bar, the end portion of the handle serving as the attachment portion will inevitably become longer in consideration of load distribution. This causes a problem in that the end of the handle interferes with the side bulge in the center of the housing.

Therefore, a method has been proposed in which the end portion of the handle, which is fixed to the housing, is bent into a dogleg shape and attached to the side surface of the housing. However, according to the conventional mounting structure, the bent portion is located outside the fixing portion and outside the outer contour of the housing. Therefore, there is a problem that the load is concentrated on the bent portion. On the other hand, if a handle having such a bent portion is attached with its straight portion aligned with the outer contour of the housing, a problem arises in that the end portion interferes with the rear wheel.

(Problems to be solved by the invention) To provide a lawn mower with a dogleg-shaped handle at the end fixed to the housing, which can be attached without interfering with the cutter housing and the rear wheel, and which has high strength. The purpose of this project is to provide a handle mounting structure.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides ends that are bent into a dogleg shape when viewed from the side of the handle, on both rear sides of a cutter housing that has left and right rear wheels. In the lawn mower that is fixedly installed, the dogleg-shaped end of the handle when viewed from the side is arranged along the front and upper side of the rear wheel, and the rear part of the cutter housing is arranged on both sides of the handle, avoiding the bent part. The cutter housing is characterized in that ribs are formed on both rear side surfaces of the cutter housing and are fixed to both side surfaces and have a shape that extends along the front and upper sides of the dogleg-shaped end of the handle when viewed from the side.

(Function) According to the above configuration, there is no interference with other parts of the cutter housing and the rear wheel when the handle is attached, and the load applied to the handle is distributed to increase the attachment strength.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the external appearance of a walking-type power lawn mower 1. FIG. Four wheels, left and right front wheels 3, 3, and rear wheels 4, 4 are provided at the four corners of a cutter housing 2 molded from synthetic resin, and an engine 5 is provided in the center of the housing 2, which is covered with an engine cover 6. It is being said. Handles 7 extend upwardly from the rear left and right sides of the housing 2, and a grass bag 8 for storing cut grass is attached to the rear of the housing 2.

In the above, the handle 7 is bent into a U-shape to form a bifurcated right handle half 7A and a left handle half 7.
The housing side end 9 of B is bent into a dogleg shape. Further, a U-shaped grip 10 is attached to the rear of the handle 7 along the right half 7A and left half 7B of the handle 7. In addition, in the drawing, 1
1 is a handheld recoil starter, and 12 is a brake lever. Further, the handle 7 and the grip portion 10 are entirely formed of pipe material.

In addition, in the housing 2, the part that houses the engine and cutter blade inside is the housing 2.
bulging portions 2a, 2a are formed on both sides of the.

Next, the mounting structure of the ends 9, 9 of the handle 7 will be described in detail with reference to FIGS. 2 and 3. First, handle 7
The end portions 9, 9 are crushed and formed into a substantially flat plate shape, and are curved and bent to form a dogleg shape when viewed from the side. The end portions 9, 9 are arranged on the upper peripheral portion of the rear wheels 4, 4, which are driving wheels, and the doglegged portions are arranged so as to follow the contours of the rear wheels 4, 4.

On the other hand, the rear side walls 2b of the cutter housing 2,
2b is formed so that the width between the right and left sides becomes gradually narrower than that of the bulged portion 2a, and the upper surface 2c is formed with an inclination so that it gradually becomes higher. Then, on the front side of the rear side walls 2b, 2b, the rear wheel 4
A hole 14 is formed at a position on the front side of the handle 7, into which a projection 13 provided at the tip of the end portions 9, 9 of the handle 7 is fitted. This hole 14 is connected by a rib to a portion of the lower surface of the housing where a flange is provided. Further, a boss portion 16 is formed above the rear wheel 4 to be fixed to a mounting portion 15 formed on the upper portion of the end portions 9, 9. This boss portion 16 is provided with a metal plate having an L-shaped cross section on the back side of the side wall 2b of the housing 2, and is welded to this metal plate. The metal plate is fixed with rivets or the like at the corner portion of the housing 2, so that the load applied by the boss portion 13 is shared between the two corners of the housing 2.

Furthermore, semicircular grooves 17, 17, for example, are formed on both sides of the upper side of the wall portion 2d at the rear end of the housing 2. Therefore, the right half 7A and the left half 7 of the handle 7
By fitting required portions of B into the grooves 17, 17, positioning for mounting the handle between the handle 7 and the housing 2 can be performed.

In the above, the protrusion 13 at the tip of each end 9, 9 of the handle 7 is fitted into the hole 14 formed in the housing 2 and fixed with the fastener 18, while the handle 7 is fitted into the groove 17, 17. Now, the upper mounting part 15
and the boss portion 16 are aligned. Therefore, by disposing and fixing the fastener 19 between the attachment part 15 and the boss part 16, the attachment of the handle 7 to the housing 2 is completed.

As mentioned above, the ends 9, 9 of the handle 7 are connected to the rear wheels 4,
It is bent into a dogleg shape, avoiding the angle 4, and is placed around the rear wheel. Further, since the portions fixed to the housing 2 are arranged on both sides of the dogleg-shaped bent portion 20, the load is not concentrated on the bent portion 20, and the strength of the mounting structure of the handle 7 is increased.

As described above, the ends 9 of the handle 7, the bulge 2a of the housing 2, and the rear wheel 4 do not interfere with each other.

In addition, ribs 21 are formed on the outer wall surface from the bulging portion 2a to the side wall 2b of the housing 2 to increase strength, and the rib 21A on the uppermost surface of the ribs 21 is formed to have a wide area, and the rear wheel 4 and the ends 9, 9 of the handle 7. In this way, the rib 21A has the function of hiding the attachment state of the end portion 9.

(Effects of the invention) As described above, according to the invention, the dogleg-shaped end of the handle when viewed from the side is arranged along the front and upper part of the rear wheel, and the cutter housing is arranged on both sides of the handle avoiding the bent part. Because it is fixed on both rear sides of the handle, the handle can be easily attached without interfering with the rear wheel or other parts of the cutter housing.
The mounting strength can be increased. Further, since ribs shaped along the front and upper sides of the dogleg-shaped end portion of the handle when viewed from the side are formed on both rear side surfaces of the cutter housing, the ribs cover the handle attachment portion and improve the appearance.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a lawn mower according to the present invention, FIG. 2 is a side view of a main part showing a handle mounting structure, and FIG. 3 is a plan view of a main part showing the same mounting structure. In the drawing, 1 is a lawn mower, 2 is a cutter housing,
3 is the front wheel, 4 is the rear wheel, 7 is the handle, 8 is the glass bag, 9 is the side end of the housing of the handle, 1
3 is a protrusion, 15 is a mounting part, 18 and 19 are fasteners,
21..., 21A are ribs.

Claims (1)

[Scope of utility model registration request] In a lawn mower, an end portion of a handle bent in a dogleg shape when viewed from the side is fixed to both rear side surfaces of a cutter housing having left and right rear wheels, wherein the dogleg shaped end portion of the handle when viewed from the side is provided. are arranged along the front and upper side of the rear wheel, and are fixed to both rear side surfaces of the cutter housing on both sides of the cutter housing, avoiding the bending part, and at the dogleg-shaped end of the handle when viewed from the side. A lawn mower handle attachment structure, characterized in that ribs shaped to extend forward and upward are formed on both rear sides of the cutter housing.