JP2531754Y2 - lawn mower - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lawn mower for mowing lawn between a reel blade and a fixed blade by rotating a reel blade, and more particularly to adjusting a gap between the reel blade and the fixed blade. It is related to the structure to be performed.

[0002]

2. Description of the Related Art In general, a gap between a fixed blade and a reel blade of a conventional reel blade lawn mower is adjusted by two adjusting screws provided at both ends of the fixed blade. The gap was adjusted to be constant.

[0003]

However, when adjusting the gap with the above-mentioned conventional lawn mower, the gap is adjusted little by little with two adjusting screws from the bottom of the body of the lawnmower. It is very difficult to make uniform adjustments to the left and right, and adjustments are not performed well, causing poor sharpness. In particular, in recent years, the number of lawn mower users has become more and more laypersons in ordinary households, and there is a demand for a device that facilitates the above adjustment.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to adjust the clearance between the reel blade and the fixed blade with a single adjusting screw, so that the adjustment is simple. To provide a lawn mower that can be

[0005]

In order to achieve the above object, the lawn mower according to the present invention is arranged on the reel blade 1 and the lower surface of the outer shell 2 of the lawn mower main body, and the blade edge is brought close to the reel blade 1. A lawn mower having a fixed blade 3 and mowing grass between the reel blade 1 and the fixed blade 3 by rotating and driving the reel blade 1. A fixed blade mounting base 4 a provided on each of the left and right sides of the outer shell 2. ,
4b, both ends of the fixed blade 3 are elastically attached so that the tip of the fixed blade 3 can move up and down.
Arms 5a and 5b which can raise and lower the tip of the fixed blade 3 by moving up and down to 4b are provided so as to protrude upward. Arms 5a and 5b on both sides are connected by a connecting plate 6 and connected to the center of the connecting plate 6. An adjusting screw 7 for adjusting the vertical position of the plate 6 was provided.

[0006]

The connecting plate 6 is moved up and down by adjusting one adjusting screw 7 provided at the center, so that the left and right arms 5a,
By moving the fixed blade 3 up and down, the left and right sides of the fixed blade 3 can be adjusted together. Therefore, even a layman can easily adjust the gap between the fixed blade 3 and the reel blade 1.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lawn mower has an appearance as shown in FIG. 2, and an outer shell 2 of a lawn mower main body is formed in a shape as shown in FIG. 3 and 4 on the right and left sides of the outer shell 2
The frames 8a and 8b are respectively arranged as shown in FIG. 1, and the frames 8a and 8b are attached to the outer shell 2 by frame attaching screws 9, respectively. As shown in FIG. 1, a reel blade 1 is rotatably mounted between the frames 8a and 8b, and the reel blade 1 is rotated by a motor supported by a motor mounting base 10. The fixed blade mounting bases 4a, 4b are provided on the left and right frames 8a, 8b, respectively.
The fixing portions 11a and 11b of the fixed blade mounting tables 4a and 4b are mounted on the lower surfaces of the frames 8a and 8b, respectively, with the table mounting screws 12. The fixed blade mounts 4a and 4b have fixed blade mounts 13a and 13a, respectively.
3b and the arms 5a and 5b are provided respectively, and the fixed blade mounting portions 13a and 13b and the arms 5a and 5b are
a, 11b can be moved elastically up and down. A fixed blade 3 is provided between the fixed blade mounting portions 13a and 13b on both left and right sides, and both ends of the fixed blade 3 are mounted on the fixed blade mounting portions 13a and 13b with fixed blade mounting screws 14 such as countersunk screws. Left and right arms 5a, 5
b also has fixed blade mounting pieces 15a, 15b, and both ends of the fixed blade 3 from the tip of the fixed blade 3 are fixed to the fixed blade mounting pieces 15a, 1 with fixed blade mounting screws 16 such as countersunk screws.
5b. Fine adjustment screws 17a, 17 are provided at portions of the left and right frames 8a, 8b corresponding to the tips of the fixed blades 3.
b, and the tips of the fine adjustment screws 17a, 17b are in contact with the fixed blade mounting portions 13a, 13b. The fine adjustment screws 17a of the fixed blade mounting portions 13a, 13b,
A tool insertion hole 18 for inserting a tool for rotating the fine adjustment screws 17a and 17b is formed in a portion corresponding to 17b. A connecting plate 6 is provided between the upper ends of the left and right arms 5a and 5b, and a bolt 19 of the adjusting screw 7 is provided at the center of the connecting plate 6 so as to project upward. Is inserted through the outer shell 2 and protrudes above the outer shell 2. A knob 20 of the adjusting screw 7 is disposed on the outer shell 2, and the bolt 19 is screwed to a nut 21 of the knob 20.

When the knob 20 of the adjusting screw 7 is rotated, the left and right arms 5 are connected via the connecting plate 6.
The gap between the reel blade 1 and the fixed blade 3 can be adjusted by simultaneously raising and lowering the left and right sides of the fixed blade 3 with the arms 5a and 5b. That is, when the knob 19 is rotated and the bolt 19 is tightened, the arm 5a,
5b is pulled up by the connecting plate 6, and the arms 5a,
The fixed blade 3 fixed to 5b is also raised, and can be adjusted so as to reduce the gap between the reel blade 1 and the fixed blade 3. When the knob 20 is rotated in the opposite direction to the above, the gap between the reel blade 1 and the fixed blade 3 can be adjusted to be widened.

When the gap between the fixed blade 3 and the reel blade 1 is adjusted by the adjusting screw 7, the left and right gaps may not be the same due to variations in the parts on the left and right sides. In this case, the adjustment can be made with the left and right fine adjustment screws 17a and 17b. For example, when the gap on the side of the fine adjustment screw 17b is smaller than the gap on the side of the fine adjustment screw 17a,
By loosening b and pressing down the fixed blade mounting portion 13b, the gap can be increased. Thus, by providing the fine adjustment screws 17a and 17b on both the left and right sides, the left and right balance can be adjusted.

[0010]

[Effects of the Invention] As described above, the present invention elastically attaches both ends of the fixed blade to the fixed blade mounting bases provided on the left and right sides of the outer shell so that the tip of the fixed blade can move up and down. An adjusting screw that provides an arm that can move the tip of the fixed blade up and down by moving it up and down so as to protrude upward, connects the arms on both sides with a connecting plate, and adjusts the connecting plate up and down at the center of the connecting plate The gap between the fixed blade and the reel blade can be adjusted by operating the one center adjustment screw to move the left and right arms up and down via the connecting plate, and to operate the fixed blade. Adjustment of the gap between the reel and the blade can be easily performed by an amateur.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a perspective view showing the whole of the same.

FIG. 3 is a bottom view of the same.

FIG. 4 is an exploded perspective view of a main part of the above.

FIG. 5 is a sectional view taken along line XX of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reel blade 2 Outer shell 3 Fixed blade 4, 4b Fixed blade mounting base 5a, 5b Arm 6 Connecting plate 7 Adjusting screw

Claims (1)

(57) [Scope of request for utility model registration] 1. A reel blade and a fixed blade disposed on a lower surface of an outer shell of a lawn mower main body and having a blade edge close to the reel blade. The reel blade and the fixed blade are driven by rotating the reel blade. In the lawn mower that mows the lawn between the fixed blades on both sides of the outer shell, the both ends of the fixed blade are elastically attached so that the tip of the fixed blade can move up and down. An adjusting screw that provides an arm that can move the tip of the fixed blade up and down by moving it up and down so as to protrude upward, connects the arms on both sides with a connecting plate, and adjusts the connecting plate up and down at the center of the connecting plate Lawn mower.