JPS5922246Y2 - Safe starting device for starters on tractors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety starting device for a starter in a tractor.

In other words, in this type of tractor, the key switch is used to drive the starter and start the engine, but in this case, the gear may not be in neutral and the switch may be turned on by mistake, or a child may play a trick. If you do so, the aircraft will take off, which is dangerous and can damage the aircraft.

This invention solves this drawback by allowing the clutch pedal to be safely depressed to a certain depth, and the starter cannot be started even if the key switch is turned on unless the clutch pedal is depressed to that depth. It has a simple structure in which the switch lever is operated directly and reliably by the clutch pedal.In particular, by assembling the switch lever with the stopper that engages the clutch pedal, the switch lever can be reliably supported and the aircraft body can be operated safely. It can be easily installed on the machine, has a simple structure, and is designed to be provided at a low cost.

Next, the embodiment shown in the drawings will be described.

Figure 1 shows a side view of an agricultural tractor, where 5 is the rear wheel;
' is a front wheel, 6 is a bundle, and 7 is a side step.

1 indicates a clutch pedal, and the supporting rod 1' of the pedal 1 is
can be bent and rotated around a fulcrum 0, and one end of a rod 10 having a turnbuckle 9 is connected to an arm 8 that rotates integrally with the support rod 1', and the other end is connected to a clutch actuation arm 11. The structure is the same as the conventional structure.

In addition, a body 3 with a case structure is installed behind the clutch case 3'.
One side of the support fitting A with an inverted side cross section is fixed to the fuselage body 3 using poles I-12, 12 in alignment with the side surface of the fuselage body 3 on the side of the support rod 1'. , the end of one surface a1 is slightly bent outward to form a stopper 2, and when the clutch pedal 1 is depressed, the lower surface of the side thereof comes into contact with the stopper 2, and further depression is restricted, and clutch operation is restricted. Configure it so that you can.

The other surface a2 of the support fitting A extends toward the support rod 1' side,
The support part 14 of the switch body B is inserted into the hole 13 formed on the other surface a2, and the lock nut 15 is screwed into the hole 13 to fix the switch body 8 above the other surface a2.
A switch rod 4 is provided protruding from the tip of the switch rod 4, and the tip of the switch rod 4 is provided so as to move forward and backward from the stopper 2, so that when the clutch pedal 1 is depressed, the stopper 2
When the clutch pedal 1 is engaged with the clutch pedal 1, the lower surface of the clutch pedal 1 is engaged with the switch rod 4 and moved back and forth to operate the switch, and when the clutch pedal 1 is separated, the switch lever 4 protrudes to release the switch operation.

Further, a cord 16 is extended from the rear of the switch body B, and the cord 16 is connected to a starting circuit having a known structure in which a key switch contact is connected between the battery and the starter.
6 is connected to form a contact structure that connects and disconnects so that unless the switch rod 4 is retracted and the switch is operated, the engine cannot be started even if the key switch is turned on.

Reference numeral 17 denotes a hook, which connects one side a1 of the support fitting A to the body 3.
It is inserted between the lower bolt 12 and the lower bolt 12 so as to be able to rotate around the bolt 12, and as shown in FIG. A bent part 17' of a hook 17 rotating around a bolt 12 engages with the clutch pedal 1 from above to firmly hold the clutch pedal 1 in that position.

When an operator riding an agricultural tractor places his foot on the clutch pedal 1 and depresses it, the clutch actuating arm 11 is rotated to disengage and operate the clutch, but the side of the clutch pedal 1 comes into contact with the stopper 2. This restricts the ability to press the pedal any further, allowing the clutch to be operated without straining each part.

When starting the engine, even if the key switch is turned on without depressing the clutch pedal 1, the starter starting circuit is disconnected because the switch rod 4 has not been operated for retraction, and the engine cannot be started.

Therefore, by depressing clutch pedal 1, stopper 2
When the key switch is turned on, the bottom surface of the clutch pedal 1 pushes the tip of the switch rod 4, as shown in FIGS. The starter can only be started when the contacts and the contacts from the key switch connect the starting circuit of the starter.

In this case, even if the transmission gear is not in neutral by mistake, the clutch is disengaged by depressing the clutch pedal 1 and the vehicle can be started safely.

In this way, in the present invention, the stopper 2 for limiting the depression depth of the clutch pedal 1 to a constant depth is fixed to the fuselage body 3 so as to be connected to the clutch pedal 1, and the switch rod 4 can be supported on a part of the member of the stopper 2. When the clutch pedal 1 is depressed to a certain depth of clutch disengagement where it contacts the stopper 2, the clutch pedal 1 connects to the switch rod 4, and the actuation of the switch rod 4 connects the starter starting circuit. Because of this configuration, if the clutch pedal 1 is depressed until it touches the stopper 2, the clutch can be operated accurately and safely, and the starter cannot be started even if the key switch is turned on unless the clutch pedal 1 is depressed to that depth. Safety can be ensured and conventional problems can be resolved.

Further, the operator can easily sense to what extent the clutch pedal 1 must be depressed to activate the switch rod 4.

At the same time, even if the engine does not start for some reason, it is easy to check and check to see where the failure is, whether there is a problem with the switch rod 4, or whether there is a problem with the engine or something else. There is.

In addition, the switch rod 4 can be attached to a part of the member of the stopper 2 to ensure reliable support.
The relative positional relationship between the stopper 2 and the stopper 2 can be set accurately as desired, and it can be assembled into an assembled part and easily attached to the fuselage, and it has a simple structure and can be manufactured at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of an agricultural tractor, Fig. 2 is an enlarged view of a portion thereof, Fig. 3 is a side view of the main part, and Fig. 4 is a partially cutaway view. 5 and 6 are explanatory diagrams of the operation, and FIG. 7 is an explanatory diagram of the operation in another state. 1...Clutch pedal, 2...Stopper, 3...Airframe, 4...Switch rod.

Claims (1)

[Scope of utility model registration request] A stopper 2 for limiting the clutch pedal 1 to a certain depression depth is fixed to the fuselage 3 so as to be connected to the clutch pedal 1, and a part of the stopper 2 is attached so as to support the switch rod 4. The stopper 2
Safe starting of a starter in a tractor, which is configured such that when the clutch pedal is depressed to a certain depth, the clutch pedal 1 connects to a switch rod 4, and the operation of the switch rod 4 connects the starter starting circuit. Device.