JPH0711567Y2 - Portable gardening hair clipper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a horticultural clipper that cuts turfgrass and twigs by swinging a movable blade with respect to a fixed blade.

[Conventional technology]

A horticultural clipper that has an electric motor inside a frame that has a handle, and a movable blade that is swingably attached to a fixed blade is swung by the protrusion of a decelerated gear to cut grass and twigs between the fixed blade and the movable blade. It has been known. The electric motor is attached to the gear base, and a plurality of gears are provided between the fixed blade that also serves as the bottom plate of the gear base and the rotation speed of the electric motor is reduced to obtain the swing speed of the movable blade suitable for grass and twigs. .

By the way, the electric motor cannot use a heavy and large electric motor in order to make it easy to handle the horticultural clippers, and the output is limited. Gears are preferably made of plastic to reduce noise. Then, pebbles or hard thick branches may be caught between the fixed blade and the movable blade that operate the hair clipper, and at this time, the movement of the movable blade forcibly stops, so the strength of the gear made of plastic etc. is weak. Occasionally, teeth were chipped, and when the output of the electric motor was weak, rotation was stopped and a large current flowed, causing a problem of burning the electric motor.

For this reason, a clutch mechanism was attached to the side of the reduction gear, and when the movable blade was forcibly locked, a proposal was made in JP 58-45554 to improve safety by releasing the clutch locking part and causing the motor to idle. There is.

[Problems to be solved by the invention]

By the way, a gear with a clutch mechanism on the side surface has a substantial gear thickness because of this clutch mechanism, and when it is desired to make it small and light like a portable garden clipper, the gear and the gear housing are large. However, it was not a structure that can be applied to all garden clippers.

[Means for solving problems]

This invention relates to a portable gardening hair clipper that incorporates a clutch mechanism that can be incorporated into a shape that does not change from before without changing the thickness of the reduction gear or changing the shape of the gear base by increasing the thickness of the clutch part. 1 is an electric motor, 2
Is a hair clipper frame having a handle, 3 is a gear base that closes the lower part of the frame 2, and the electric motor 1 is attached so that the gear base 3 looks into the frame 2. 4 is gear base 3
Fixed blade that doubles as the bottom plate of the, and 6 is the mounting shaft 4'on the fixed blade 4.
It is a movable blade that is swingably attached via a movable blade 6 that can be used to clip grass and twigs.

Reference numeral 7 is a spindle attached to the gear base 3, 8 is a reduction gear that fits and rotates on the spindle 7, 9 is a projection eccentrically attached to the reduction gear 8, and 5 is a movable blade 6 that fits with the projection 9. It is a drive hole, and when the reduction gear 8 rotates, the movable blade 6 reciprocally swings by the eccentrically mounted projection. 10 is a drive gear attached to the shaft of the electric motor 1, 11 is a drive gear
An interlocking gear that transmits the rotation of 10 to the reduction gear 8 and 12 is a rotating shaft of the interlocking gear 11. The interlocking gear 11 is composed of two gears having different diameters, and the large-diameter gear portion is the drive gear 10 The small-diameter gear portion is in mesh with the reduction gear 8, and the rotation speed of the reduction gear 8 is greatly reduced compared to the rotation speed of the electric motor 1.

Reference numeral 13 is a movable frame body mounted between the gear base 3 and the fixed blade 4, 14 is a clutch spring mounted between the movable frame body 13 and the gear base 3, and the rotary shaft 12 of the interlocking gear 11 is movable. It is attached to the frame 13 and the interlocking gear 11 by the clutch spring 14.
Is pressed against the drive gear 10 and the reduction gear 8.

Reference numeral 15 is a power switch attached to the handle of the frame 2, and 16 is a power cord.

[Explanation of action]

This invention, which has the above-mentioned configuration, inserts the tip of the power cord 16 into an outlet, operates the power switch 15 with a handle to rotate the electric motor 1, and moves the movable blade over the fixed blade 4 fixed to the frame body 2. 6 swings back and forth, and the cutting blade part operates a hair clipper to mow grass and twigs.

A gear box formed between the gear base 3 and the fixed blade 6 of the present invention is provided with a drive gear 10, an interlocking gear 11, and a reduction gear 8, and a rotary shaft 12 of the interlocking gear 11 is a movable frame body.
It is attached to 13, and the interlocking gear 11 is also movable together with the movable frame body 13. Normally, the interlocking gear 11 is pressed by the clutch spring 14 so as to mesh with the drive gear 10 and the reduction gear 8. .

Even when the movement of the movable blade 6 is locked by inserting a pebbles or twigs into the cutting edges of the fixed blade 4 and the movable blade 6, the electric motor 1 is forcibly rotated. Since 8 does not move, the interlocking gear 11 slips on the tooth tip and pushes the clutch spring 14, and the interlocking gear 11 with the movable frame 13 escapes.

Therefore, the drive gear 10 continues to rotate with the interlocking gear 11 stopped, and the trouble that the electric motor 1 is locked and an abnormal current flows to burn out the coil of the electric motor 1 can be prevented. .

[Explanation of effects]

As described above, when the movable blade 6 is locked by sandwiching a small stone or twig between the fixed blade 4 and the movable blade 6, the interlocking gear 11 escapes with the movable frame body 13 and the drive gear 10 idles. The abnormal state in which the electric motor 1 is locked and overcurrent flows does not occur at all.

At this time, the interlocking gear 11 constituting the clutch mechanism is the reduction gear 8
Since the drive mechanism 10 and the drive gear 10 escape laterally, the dimensional relationship between the gear base 3 and the fixed blade 4 does not depend on the clutch mechanism, and the frame does not become large unlike the conventional clutch mechanism. Absent. Therefore, it becomes possible to configure with a clutch mechanism in the same frame as an inexpensive type without a clutch mechanism,
Moreover, since most of the parts used are common parts, they can be manufactured at low cost, and the popularization of high-grade portable gardening hair clippers can be promoted.

[Brief description of drawings]

The drawing is a sectional view of this device. 1 ... Electric motor, 2 ... Hair clipper frame, 3 ... Gear base, 4 ... Fixed blade, 5 ... Driving hole, 6 ... Movable blade, 7 ...
... Support shaft, 8 ... Reduction gear, 9 ... Protrusion, 10 ... Drive gear, 11 ... Interlocking gear, 12 ... Rotating shaft, 13 ... Movable frame,
14 ...... Clutch spring

Claims (1)

[Scope of utility model registration request] 1. A frame body 2 having a handle in which an electric motor 1 is incorporated.
And a gear base 3 to which the electric motor 1 is attached, and a gear base 3
In the gardening clipper that is integrally assembled with the fixed blade 4 that also serves as the bottom plate of the above, the movable blade 6 having the drive hole 5 is attached on the fixed blade 4, and the spindle 7 attached to the gear base 3 is the center of rotation. Is provided with a reduction gear 8 which is fitted with the drive hole 5 of the movable blade 6 and swings the movable blade 6 when the reduction gear 8 rotates. And a reduction gear 8 and an interlocking gear 11 that meshes with the reduction gear 8 and the movable frame 13 is disposed on the rotation shaft of the interlocking gear 11 between the gear base 3 and the fixed blade 4.
A portable garden clipper equipped with a clutch spring 14 for mounting the interlocking gear 11 against the drive gear 10 and the reduction gear 8 between the movable frame 13 and the gear base 3.