JPH055849Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The invention relates to a safety device for a lawn mower.
By pulling out the lock plate in an emergency,
The mower is characterized in that the mower itself is detached from the hanging fitting and the mower's engine is also stopped at the same time.

[Conventional technology and problems]

Conventionally, a lawn mower has a hanging metal fitting attached to the lower end of a belt worn on the shoulder, and the hanging metal clamps the mower, and a lock plate is usually inserted to maintain the clamping. In case of an emergency, the lock plate is pulled out via a rope, and the mower is automatically released and dropped, separating the worker from the mower.
However, with the above-mentioned conventional products, even after the mower is separated from the hanging bracket, the mower engine does not stop and the cutter continues to rotate while falling to the ground, which is extremely dangerous. It was hot. Also, when pulling out the lock plate,
The pulling direction is limited to a certain range, and it is necessary to check this pulling direction immediately and perform an action such as pulling the rope, and if this direction is not appropriate, the lock plate cannot be pulled out. It was hot.

[Means for solving problems]

The present invention solves the above problems by simultaneously turning off the engine switch when the mower body separates from the hanging bracket, and by making it possible to pull out the lock plate from any direction. be. That is, the gist of the present invention is that the upper end of the mower hanging bracket B is clamped at the lower end of the clamping part A, which is made up of two plates whose lower ends can be opened and closed, so that the lock plate 13 is always attached to a part of the body. In a safety device for a lawn mower, the lower ends of the two plates 2 and 6 are released by pulling the cord 12 connected to the mower, and the mower is detached and dropped together with the hanging bracket. Attach the upper hanging bracket 1
5 and a lower mower holding fitting 18, and a pipe 20 is passed through the upper and lower adjacent parts of both fittings so that both fittings can horizontally rotate independently of each other, and a nut 21 is attached to the upper end of the pipe. A switch case 22 is provided at the lower end thereof, and an engine stop switch 23 is provided inside this switch case, and an actuator 26 of a movable contact of this switch is passed through the pipe and faces into the hanging fitting at the upper part. When the upper end of the hanging fixture is held between the two plates 2 and 6, the upper end of the actuator is held at the lower end of the plate.
It is characterized by being pressed down by a certain amount.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. The suspension is equipped with a flange 5 on the center side having a longitudinal long hole 4 through which the tip of the horizontal axis can pass through the upper end of a substantially L-shaped movable plate 2 with a horizontal axis 1 fixed on the center side. The upper part of the lowering plate 6 is rotatably supported by a pin 7, and a compression coil spring 9 is passed through the horizontal shaft so that the tip of the horizontal shaft passes through the elongated hole 4 of the flange, and is suspended from the lower end 3 of the movable plate. A flange 11 is fixed to the tip of the horizontal shaft such that a constant distance 10 is created between the tip of the horizontal shaft and the flange when the lower end 8 of the plate is in the closed state, and a flange 11 is secured between the flange and the flange. A holding part A is formed by removably holding a C-shaped lock plate 13 connected to a string 12. On the other hand, the hanging fitting B is divided into two parts: a substantially concave hanging fitting 15 and a lower mower holding fitting 18 having an inverted concave shape. A pipe 20 is passed through the provided hole, a nut 21 is provided at its upper end, and a switch case 22 having a larger diameter than the pipe is provided at its lower end, and an engine stop switch 23 is provided within this switch case. A fixed contact 24 and an actuator 26 of a movable contact 25 that moves toward and away from the pipe are passed through the pipe and exposed to the upper hanging fitting 15, and a protective cover 27 is provided at the tip of the actuator. Then, when the shaft 14 on the upper part of the hanging bracket is held between the lower ends of both plates as shown in the drawing, the upper end of the actuator 26 is pushed down a certain amount by the lower surface of the lower end 3 of the movable plate, and the fixed contact of the switch is pressed down. and a movable contact are kept open at all times. Note that 28 is a tubular shaft of a lawn mower, which is fixed to the holding fitting 18 with a band 29;
Hole 30 at the upper end of the hanging plate 6 of the above-mentioned clamping part A
A belt is passed through the machine, and the belt is placed over the worker's shoulder.

[Effect]

If an emergency occurs while the mower is in use, pull the drawstring 12 to remove the lock plate 13 from the horizontal shaft 1. The action of the compression coil spring 9 and the mower's own weight will open the lower ends of both plates, suspending the mower. It falls together with the hanging fixture B and separates from the worker. At the same time, the pressure on the actuator 26 of the engine stop switch 23 is released, so that the movable contact 25 and the fixed contact 2
4 makes contact, the mower's engine is turned off, and the cutter stops rotating. In addition, no matter which direction the pull string of the lock plate is pulled, the clamping part A and the hanging metal fitting 15 interposed between the upper belt and the mower holding metal fitting 18 can freely rotate in the horizontal direction, so the lock plate can be pulled from any direction. The plate can be pulled out smoothly from the horizontal shaft because it can be turned in a direction that allows easy removal.

[Effect of idea]

As mentioned above, if a danger occurs while using the mower, the present invention allows the mower to be dropped and separated from the operator by pulling the drawstring and pulling out the lock plate, and also stops the mower's engine at the same time. Therefore, the conventional danger of the lawn mower's cutter continuing to rotate even after a fall can be completely prevented, which is a great effect.

[Brief explanation of the drawing]

The drawings show an example of the present invention, and FIG.
FIG. 2 is a front view showing a partially sectional view, and FIG. 2 is a side view of the same. 1...Horizontal shaft, 2...Plate, 13...Lock plate, 15...Hanging fitting, 18...Holding fitting, 20...Pipe, 21...Nut, 22...
Switch case, 23...engine stop switch, 26...actuator.

Claims (1)

[Scope of utility model registration request] The upper end of the mower hanging bracket B is clamped at the lower end of the clamping part A, which is made up of two plates whose lower ends can be opened and closed, and the two plates are removed by pulling out the lock plate 13 via the drawstring 12. In a safety device for a lawn mower in which the lower ends of the plates 2 and 6 are opened and the mower is detached and dropped together with the hanging bracket, the structure of the hanging bracket is changed to an upper hanging bracket 15 and a lower mower holding bracket 18. A pipe 20 is passed through the upper and lower adjacent parts of both metal fittings so that both metal fittings can horizontally rotate independently of each other, and a nut 2 is attached to the upper end of the pipe.
1 is provided, and the lower end is used as a switch case 22, and an engine stop switch 23 is provided inside this switch case, and an actuator 26 of a movable contact of this switch is passed through the pipe and exposed into the upper hanging fitting. , when the upper end of the hanging fitting is held between the two plates 2 and 6, the lower end of the plate
A safety device for a lawn mower, characterized in that the upper end of the actuator is pushed down by a certain amount.