JPH0546232U - lawn mower - Google Patents

Abstract

(57) [Summary] [Purpose] The adjustment of the gap between the reel blade and the fixed blade is performed with a single adjusting screw tool to simplify the adjustment. [Structure] A lawnmower is configured so as to mow grass between a reel blade 1 and a fixed blade 3 by rotationally driving the reel blade 1. In this case, both ends of the fixed blade 3 are elastically attached to the fixed blade mounting bases 4a provided on both the left and right sides of the outer shell 2 so that the tip of the fixed blade 3 can move up and down. An arm 5a capable of moving up and down the tip of the fixed blade 3 by moving up and down on the fixed blade mounting bases 4a on both sides is provided so as to project upward. The arms 5a on both sides are connected by the connecting plate 6, and an adjusting screw 7 for adjusting the vertical position of the connecting plate 6 is provided at the center of the connecting plate 6. Thereby, the left and right arms 5a can be moved up and down by operating one adjusting screw 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lawn mower that cuts grass between a reel blade and a fixed blade by rotating the reel blade, and more particularly to a structure for adjusting a gap between the reel blade and the fixed blade. .

[0002]

[Prior Art]

 The gap between the fixed blade and the reel blade of a conventional reel blade type lawnmower is generally adjusted with two adjusting screws provided at both ends of the fixed blade so that the gaps on the left and right sides are constant. Was adjusted so that

[0003]

[Problems to be solved by the device]

 However, when adjusting the gap with the above-mentioned conventional lawnmower, the two left and right adjusting screws are used to slightly compare the left and right gaps from the bottom of the lawn mower body. However, there is a problem that adjustment is not successful and poor sharpness occurs. In particular, in recent years, the number of users of lawnmowers has increased in general households, and there is a need for a device that facilitates the above adjustments.

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 one adjusting screw tool. It is to provide a lawnmower that can be simplified.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the lawn mower of the present invention has a reel blade 1 and a fixed blade 3 which is arranged on the lower surface of the outer shell 2 of the lawn mower main body and has the blade tip close to the reel blade 1. In a lawnmower that cuts grass between the reel blade 1 and the fixed blade 3 by rotationally driving the blade 1, both ends of the fixed blade 3 are fixed to fixed blade mounting bases 4a and 4b provided on both left and right sides of the outer shell 2. The fixed blades 3 are elastically attached so that they can move up and down, and the arms 5a, 5b that can move the tips of the fixed blades 3 up and down by moving up and down on the fixed blade mounting bases 4a, 4b on both sides are projected upward. The arms 5a and 5b on both sides are connected by a connecting plate 6, and an adjusting screw 7 for adjusting the vertical position of the connecting plate 6 is provided at the center of the connecting plate 6.

[0006]

[Action]

 By adjusting one adjusting screw 7 provided at the center, the connecting plate 6 can be moved up and down to move the left and right arms 5a and 5b up and down, and the left and right sides of the fixed blade 3 can be adjusted together. Therefore, even an amateur can easily adjust the gap between the fixed blade 3 and the reel blade 1.

[0007]

【Example】

 The lawn mower has the appearance shown in FIG. 2, and the outer shell 2 of the lawn mower body is formed in the shape shown in FIG. As shown in FIGS. 3 and 4, frames 8a and 8b are respectively arranged on the left and right sides of the outer shell 2, and the frames 8a and 8b are attached to the outer shell 2 by frame attachment screws 9, respectively. A reel blade 1 is rotatably mounted between the frames 8a and 8b as shown in FIG. 1, and the reel blade 1 is rotationally driven by a motor supported by a motor mounting base 10. . Fixed blade mounting bases 4a and 4b are arranged on the left and right frames 8a and 8b, respectively, and the fixing portions 11a and 11b of the fixed blade mounting bases 4a and 4b are mounted on the lower surfaces of the frames 8a and 8b by mounting screws 12 respectively. Installed. The fixed blade mounting bases 4a and 4b are provided with fixed blade mounting portions 13a and 13b and arms 5a and 5b, respectively. The fixed blade mounting portions 13a and 13b and arms 5a and 5b are fixed to the fixed portions 11a and 11b. It can move up and down elastically. Fixed blades 3 are installed between the left and right fixed blade mounting portions 13a and 13b, and both ends of the fixed blade 3 are fixed to the fixed blade mounting portions 13a and 13b with fixed blade mounting screws 14 such as flat head screws. is there. The left and right arms 5a and 5b are also provided with fixed blade attachment pieces 15a and 15b. Both ends of the fixed blade 3 are fixed blades with a fixed blade mounting screw 16 such as a flat head screw from the tip of the fixed blade 3. It is fixed to the mounting pieces 15a and 15b. Fine adjustment screws 17a and 17b are screwed into the portions of the left and right frames 8a and 8b corresponding to the tips of the fixed blades 3, and the tips of the fine adjustment screws 17a and 17b are fixed to the fixed blade attachment portions 13a and 13b. Abut. A tool insertion hole 18 for inserting a tool for rotating the fine adjustment screws 17a and 17b is formed in a portion of the fixed blade attachment portions 13a and 13b corresponding to the fine adjustment screws 17a and 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 an adjusting screw 7 is provided at the center of the connecting plate 6 so as to project upward. 19 is inserted into the outer shell 2 so as to project above the outer shell 2. A knob 20 of the adjusting screw 7 is arranged on the outer shell 2, and a nut 21 of the knob 20 is screwed with the bolt 19.

Then, by rotating the knob 20 of the adjusting screw 7, the left and right arms 5a and 5b are moved up and down via the connecting plate 6, and the left and right sides of the fixed blade 3 are simultaneously moved by the arms 5a and 5b. The clearance between the reel blade 1 and the fixed blade 3 can be adjusted by moving up and down. That is, when the knob 20 is rotated and the bolt 19 is tightened, the arms 5a and 5b are pulled up by the connecting plate 6, the fixed blade 3 fixed to the arms 5a and 5b is also raised, and the reel blade 1 and the fixed blade 3 Can be adjusted to reduce the gap between. When the knob 20 is rotated in the opposite direction to the above, it can be adjusted so as to widen the gap between the reel blade 1 and the fixed blade 3.

By the way, when the clearance between the fixed blade 3 and the reel blade 1 is adjusted by the adjusting screw 7, the left and right clearances may not be the same due to variations in parts on the left and right sides. In this case, the left and right fine adjustment screws 17a and 17b can be used for adjustment. For example, when the clearance on the fine adjustment screw 17b side is smaller than the clearance on the fine adjustment screw 17a side, the clearance can be increased by loosening the fine adjustment screw 17b and pushing down the fixed blade mounting portion 13b. By providing the fine adjustment screws 17a and 17b on both the left and right sides in this way, the left and right balance can be adjusted.

[0010]

[Effect of the device]

 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 tips of the fixed blades can move up and down, and moves up and down the fixed blade mounting bases on both sides. By doing so, an arm that can move the tip of the fixed blade up and down is provided so as to project upward, both arms are connected by a connecting plate, and an adjusting screw tool for adjusting the vertical position of the connecting plate is provided in the center of the connecting plate. Therefore, by operating one adjusting screw in the center, the left and right arms can be moved up and down via the connecting plate to adjust the gap between the fixed blade and the reel blade. The gap between and can be easily adjusted even by an amateur.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing the same as above.

FIG. 3 is a bottom view of the above.

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

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

[Explanation of symbols]

 1 Reel Blade 2 Outer Shell 3 Fixed Blade 4, 4b Fixed Blade Mounting Base 5a, 5b Arm 6 Connecting Plate 7 Adjustment Screw Tool

Claims (1)

[Scope of utility model registration request] 1. A reel blade and a fixed blade, which is disposed on a lower surface of an outer shell of a lawn mower body and has a blade edge brought close to the reel blade, and the reel blade and the fixed blade are rotationally driven. In a lawn mower that cuts lawn between and, elastically attach both ends of the fixed blade so that the tip of the fixed blade can move up and down on the fixed blade mounting bases provided on the left and right sides of the outer shell An arm is provided so that the arm that can move the tip of the fixed blade up and down by moving up and down on the stand is projected upward, and the arms on both sides are connected by a connecting plate and the connecting screw is vertically adjusted in the center of the connecting plate. A lawn mower that is equipped with.