JPH02221637A - Emergency shutdown device for engine - Google Patents

Abstract

PURPOSE:To perform emergency shutdown of an engine easily and surely by stopping a stopping device which is connected to a fuel cut mechanism of an engine body, with a stopper at a fuel non-cut position, against a spring gear which energizes in a fuel cut direction. CONSTITUTION:A cylindrical case 15 which is inserted into a bottom cowling 6 is tightened with a nut 16. An outer cable 18 of an emergency shutdown cable 10 is inserted into an inner end part of the cylindrical case 15, through a positioning device 17. A piston 19 is fitted to the positioning device 17, and an inner cable 20 is connected. An emergency shutdown spring 22 is interposed between the positioning device 17 and the piston 19. On the other hand, a stopper 23 is engaged with an outer end part of the cylindrical case 15, and a pin 27 is abutted against a cable end 21. Consequently, the stopper 23 is pulled through a braid 29, and the inner cable 20 is pulled with the spring 22 so as to stop the engine, at the time of requirement.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an emergency stop device for an engine mounted on a ship such as an outboard motor or a vehicle such as a tractor or snow blower.

Conventional technology For example, if an operator of an outboard engine falls into the water or falls from the vehicle, or if the hull collides with driftwood and flips up and opens the top cowling, in the former case, the hull or vehicle will be damaged. In the latter case, it is necessary to stop the engine in order to prevent the operator from moving away from the operator, and in the latter case, to prevent the operator from touching the rotating engine with the top cowling open. In such a case, in a diesel engine equipped with an electric system, it is possible to easily stop the engine by providing an electric solenoid or the like for cutting fuel, for example. Furthermore, a gasoline engine can be easily stopped by shorting the ignition string.

Problems to be Solved by the Invention However, this is difficult to do with so-called manual start type diesel engines that do not have electrical systems such as power generation. There was no emergency stop device installed.

The present invention has been made for the purpose of making it possible to perform an emergency stop even in such a manual start type diesel engine.

Means for Solving the Lm Problem In order to achieve the above object, the present invention includes a stopper such as a piston or a lever connected to a fuel cut mechanism of the engine body, and a constant biasing of the stopper in the fuel cut direction. The present invention is characterized by comprising a spring device and a stopper that is engaged to hold the stop in the fuel non-cutting position against the force of the spring device.

Furthermore, in order to stop the engine when the top cowling of an outboard motor is opened, the invention of claim 2 of this application provides a spring for releasing the locking of the stopper in the engine mounted on the outboard motor; The present invention is characterized in that a stopper is provided to prevent the stopper from coming off, and the stopper is connected to a top cowling surrounding the engine.

For example, if the operational stopper is connected in advance to the boat operator or pilot with a rope, etc., if the boat operator falls into the water or falls, the stopper will be pulled through the rope and released from the anchorage. The fuel is automatically cut and the engine stops. Further, in the invention of claim 2, when the top cowling is opened, the stopper is removed, so that the stopper is similarly removed and the engine is stopped.

EXAMPLE The present invention will be described below based on an example implemented in an outboard motor engine.

Figure 7 shows the overall structure of this outboard motor, and in the figure (
1) is a drive unit attached to the hull (3) via a bracket (2), and an engine (5) covered by a cowling (4) is mounted on the top of this drive unit (1). There is. Cowling (4)
consists of a bottom cowling (6) on the lower side and a top cowling (7) on the upper side, and the top cowling (7) has its front side as a fulcrum and its rear side can be opened and closed upward in the direction of the arrow. An emergency stop operation section (8) and a normal stop operation section (9) of the present invention are provided on the front side of the bottom cowling (6) facing the boat operator.

As shown in FIG. 8, the emergency stop operation part (8) is connected via a cable (10) to a fuel cuff lever (11) attached to the side of the engine (5). The normal stop operation part (9) is also connected to another cable (12).
is connected to the fuel cant lever (11) by.

The normal stop operation section (9) is a one-lever type that bows a wire (12) by pulling it toward the boat operator.

FIG. 1 shows one embodiment of the emergency stop operation section (8). On the front wall of the bottom cowling (6),
The cylindrical case (15) is inserted from the outside, and the oak (16) is screwed into the cylindrical case (15) from the inside.
), the tightening is fixed. Cylindrical case (15
) is fitted with an annular positioning tool (17),
The emergency stop cable (
10) is inserted and fixed. A piston (19) is attached to the front side of the positioning tool (17).
) is slidably inserted, and the outer cable (
An inner cable (20) protruding from the piston (18) passes through this piston (19) and has a cable end (21) at its tip. An emergency stop spring (22) is provided between the piston (9) and the positioning tool (17), and constantly urges the cable end (21) forward via the piston (19). There is.

(23) includes a disc-shaped portion (24) and its disc-shaped portion (24).
) is a stopper with a pin (25) integrally protruding inward from the back surface of the cylindrical case (15). A locking piece (26) partially protruding inward from the outer periphery of the plate-shaped portion (23) is attached to the flange (27) at the outer end of the case (15).
). Further, a ring-shaped locking portion (28) is integrally formed at the center of the outer surface of the disc-shaped portion (24), and a string (29) is connected to this locking portion (28). The other end of this cord (29) is connected to the boat operator side. When the stopper (23) is engaged as described above, the tip of the pin (25) resists the force of the stop spring (22), and the end (21) of the inner cable (20)
) is pushed back to the fuel non-cut position.

In this state, for example, if the operator falls into the water, the stopper (23) is pulled through the strap (29), so that the stopper (23) is not engaged with the flange (27) as shown in FIG. It comes off and the pin (27) pops out from the case (15). Therefore, the force of the stop spring (22) causes the inner cable (20) to close its end (21).
is pulled outward through the fuel to the fuel cut position, thereby shutting down the engine. Further, even if the operator does not fall into the water, in the event of some other unforeseen situation, it is possible to make an emergency stop by pulling the cord (29). In order to facilitate the removal of the stopper (23), a corner portion of the outer periphery of the flange (27) is cut diagonally (30). To operate the engine again after such an emergency stop, insert the pin (25) of the stopper (23) into the case (15) again and connect the end (21) of the inner cable (20).
) and push the locking piece (26) back onto the flange (27).
All you have to do is lock it in.

FIG. 3 shows another embodiment of the invention, in which the pin (
25) is brought into contact with the piston (19), and this piston (19) is directly held at the fuel non-cut position 2-5. The entire pin (25) is rod-shaped, and the inner cable end (21) is inserted into the four parts (3I) formed on the tip surface thereof.

FIGS. 4 and 5 show an embodiment in which the engine is stopped when the top cowling (7) is opened. Using the stopper (23), the piston (
19) in the fuel non-cut position is similar to the embodiment shown in FIG.
The stopper release spring (33) is fitted externally, and this stopper release spring (33) and its stopper (23)
Insert the stopper (34) between the locking piece (26) of the case (
15) It is secured to the groove (35) on the outer periphery. Stop (
A wedge body (36) having a triangular cross section is provided between the locking piece (26) and the locking piece (26), and as shown in FIG. A sloped portion (37) is formed at the diametrical end of the locking piece (26). The stopper (34) has a circular shape with a portion cut out so that it can be inserted into and engaged with the groove (35) of the case (15) from the side, or pulled out in the opposite direction. A strap (39) different from the strap (29) tied to the boat operator side is connected to the protrusion (38) formed on the outer periphery. The other end of this strap (39) is connected to the top cowling (7).

In such a configuration, when the top cowling (7) is unexpectedly opened, the strap (39) is pulled, and thereby the stopper (34) is pulled out from the case (15). Therefore, the detachment spring (33) held by this stopper (34) is released, and this spring (33) first pushes the model (36) outward, and this tree (36) and the above-mentioned By the action of the inclined portion (37), the locking piece (26) is pushed open diametrically outward, and the stopper (23) is removed. Therefore, in the same way as above,
The inner cable (20) is pulled and the engine is stopped.

In addition, in the above-mentioned embodiment, an example is shown in which the emergency stop operation part (8) and the normal stop operation part (9) are installed on the bottom cowling (6), but both the operation parts (8) and (9) are installed in the bottom cowling (6). Either or both may be installed on the instrument panel for remote control.

Effects of the Invention As described above, according to the present invention, by connecting the stopper to the operator or operator side or the stopper to the top cowling side, it is possible to prevent these stoppers and fasteners from coming off in an emergency. You can cut the fuel to the engine and stop it. Therefore, there is an effect that an emergency stop can be performed even in a manual start type diesel engine that does not have an electrical system such as a power generator as in the past.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an emergency stop device portion showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view showing a situation when the stopper is removed from the state shown in Fig. 1, and Fig. 3 is a longitudinal sectional view of an emergency stop device portion showing an embodiment of the present invention. FIG. 4 is a vertical cross-sectional view of the emergency stop device showing yet another embodiment of the present invention, and FIG. 5 is an enlarged view of the main part of FIG. 4. Figure 6 is a front view of the stopper, Figure 7 is an overall side view of the outboard motor, and Figure 8 shows the top cowling and main body of the engine removed.
FIG. 3 is a plan view of the inside of the cowling. (5)...Engine, (7)...Top cowling, (8)...Emergency stop part, (19)...Piston, (22)...Emergency stop spring, (23)... - Stopper (33)... Spring for release, (34)... Stopper. Patent Applicant Yanmar Diesel Co., Ltd.

Claims (1)

[Claims] 1. A stopper such as a piston or lever connected to a fuel cut mechanism of the engine body, a spring device that constantly biases the stopper in the fuel cut direction, and a spring device that resists the force of this spring device. and a stopper latched to hold the stopper in a fuel non-cutting position. 2. Claim 1, wherein the engine for mounting on an outboard motor is provided with a spring for disengaging the stopper and a stopper for preventing the stopper from being disengaged by the spring, and the stopper is connected to a top cowling surrounding the engine. Emergency stop device for the engine described.