JPS59162362A - Recoiled starter - Google Patents

Abstract

PURPOSE:To prevent a rachet from coming out due to vibration of an engine by making the fall-in and working face of the rachet to draw an arc about the center of a reel supporting shaft and making a stopper to support the rachet at the back side of the face engaging therewith. CONSTITUTION:With a rachet 19 staying in a dent, the fall-in and working face 32 of the rachet 19 draws an arc about the center of a reel supporting shaft 12. A stopper 23 which is formed on the reel 13 is capable of supporting the back face 33 with respect to the engaging face 20 with the rachet 19. The force produced by the abutment of the fall-in and working face 32 and a part 30 is applied toward a reel supporting shaft 12 to keep the rachet 19 stable in the fell-in position, thereby surely preventing the rachet 19 from coming out due to vibration of an engine.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recoil starter suitable for use in outboard motors and the like. .

Conventionally, as a glue coil starter for outboard motors, etc., a reel is rotatably supported by a starter case.

A winding member that is wound around the reel and allows the reel to rotate in the forward direction when the reel is pulled out, and a mainspring that is interposed between the starter case and the reel and biases the reel in the reverse direction of winding the winding member. a ratchet rotatably supported on the side of the reel and capable of swinging between a protruding position in which it engages with a starting pulley on the engine side and a retracted position in which it does not engage with the starting pulley; and a reel in the starter case. The ratchet is elastically supported around the support shaft, and when the reel rotates forward, the protruding operating part pushes the protruding operating surface of the ratchet to protrude the ratchet to the protruding position marked -, and when the reel rotates in the reverse direction, the retracting operating part moves into the ratchet. The actuator is brought into contact with the retractable operating surface of the ratchet to retract the ratchet into the retracted position, and the stopper is provided on the reel and supports the ratchet in the protruding position when engaged with the starting pulley. Something is being used.

That is, in the conventional glue coil starter, the winding member is pulled out against the mainspring, the reel is rotated in the forward direction, and the ratchet is projected by one actuator.

The engine can be started by engaging the ratchet in the starting groove on the engine side, and after the engine has been started, by the action of the mainspring.

The reel can be rotated in the opposite direction to wind it onto the winding member 'aj' J-le, and at the same time, the ratchet can be retracted using a single actuator.

However, in the above-mentioned conventional glue coil starter, the retraction operation surface of the ratchet forms a circle or an arc centered on the warped check support shaft side with respect to the reel support shaft when the ratchet is in the retracted state.

Therefore, when the ratchet is in the retracted state, the contact force generated between the retractable operating surface of the ratchet and the retractable operating part of the actuator is directed toward the side opposite to the ratchet support shaft with respect to the reel support shaft, and the contact force is caused by engine vibration. When the retraction operation surface of the ratchet becomes a dog, the actuator rotates around the reel support shaft in a direction in which its retraction operation part releases contact with the retraction operation surface of the ratchet, stably holding the ratchet in its retraction position. This may make it difficult to ensure stable operation of the recoil starter.

In addition, in the above conventional glue coil starter.

A stopper supporting the ratchet in the protruding position supports the engaging surface of the ratchet with respect to the starting pulley on the opposite side with respect to the ratchet support shaft, and the ratchet allows the starting load acting on the engaging surface to be magnified by the lever ratio. The starting load exerted on the ratchet by the starting block IJ and the supporting load exerted on the ratchet by the stopper are in approximately the same direction. Therefore, a surface pressure sufficient to counteract both of these loads acts on the ratchet support shaft.For example, in recoil starters used in outboard motors, etc., consider salt buildup due to seawater, etc. However, if the stopper and ratchet support shafts become oily or are protected by resin bushings, there is a risk that the stopper and ratchet support shafts will be damaged by the above-mentioned large surface pressure.

The present invention prevents the ratchet from jumping out from the retracted position due to engine vibration, and also reduces the surface pressure acting on the protruding position of the ratchet against the starting load, the surface pressure acting on the diaphragm stopper, and the surface pressure acting on the ratchet support shaft. It is an object of the present invention to provide a recoil starter that can reduce recoil.

In order to achieve the above object, the recoil starter according to the present invention has a recoil starter in which the retractable operation surface of the ratchet forms an arc centered on the reel support shaft under the retracted state of the ratchet, and the stopper has a retractable actuating surface of the ratchet. This is designed to support the rear side of the retaining surface against friction.

A seventh embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a recoil starter 10 according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1.

The starter case 11 is fixed, for example, to the upper part of the main body of an outboard motor engine. A reel support shaft 12 is erected in the center of the starter case 11, and a reel 13 is rotatably supported on the reel support shaft 12.Reel 13
A rope 15 serving as a winding member in the present invention is wound around the winding groove 14 on the outer periphery of the winding groove 14 . A starter knob 16 is connected to the pull-out end of the loaf '15, and the starter knob 16 enables the reel 13 to rotate forward by pulling out the loaf 15.

There is a mainspring 1 between the starter case 11 and the reel 13.
7 is interposed, and the mainspring 17 urges the reel 13 in the opposite rotation direction to wind up the loaf 15.

A ratchet support shaft 18 is implanted on the side surface of the reel 13 so as to be offset from the reel support shaft 12, and the approximate center of a ratchet 19 is rotatably supported on the ratchet support shaft 18. The ratchet 19 is shown in solid lines in FIG.
A retracted position in which the engaging surface 20 does not engage with the engaging groove 22 of the starting pulley 21 on the engine side, and a retracted position where the engaging surface 20 does not engage with the engaging groove 22 of the starting pulley 21 shown by the two-dot chain line in FIG. It is possible to swing between the protruding position and the engaging position. The ratchet 19 comes into contact with a stopper 23 formed on the reel 13 in its protruding position, and can be supported in its protruding position while engaged with the starting pulley 21.

At the tip of the reel support shaft 12, a reel 13. Mainspring 17. A restraining plate 24 capable of holding the ratchet 19 is integrated with a fixing bolt 25. A spring 27 serving as an actuator in the present invention is elastically supported by the boss portion 26 of the restraining plate 24 . spring 27
has a substantially U-shape, and the recesses 28 facing each other in the middle part thereof are substantially U-shaped.
The boss part 26 is clamped by the boss part 26, and its head is used as a protruding actuating part 29, and its free end bent at a substantially right angle is used as a retracting actuating part 30. The protruding actuating portion 29 of the spring 21 can push the protruding actuating surface 31 of the ratchet 19 to cause the ratchet 19 to protrude to the protruding position when the reel 13 rotates forward. Also, spring 27
The immersion actuating section 30 is.

When the reel 13 rotates in the reverse direction, it comes into contact with the retraction operating surface 32 of the ratchet 19, making it possible to retract the ratchet 19 into the retracted position.

In this embodiment, the retraction operating surface 32 of the ratchet 19 can form an arc centered on the reel support shaft 12 when the ratchet 19 is retracted, as shown by the radius of curvature R in FIG. As I, zru. Also, reel 13
The stopper 23 formed at the rear surface 33 of the ratchet 19 can support the rear surface 33 of the ratchet 19 relative to the retaining surface 20 .

Next, the operation of the above embodiment will be explained.

When the loaf 15 is pulled out by the star tag 16, the reel 13 rotates forward in the direction shown by the arrow in FIG.
The ratchet 19 supported by 3 also rotates in the forward direction. On the other hand, the spring 2 that is supported by pressure around the reel support shaft 12
7 is kept stationary due to the frictional force between the retaining plate 24 and the boss portion 26. Therefore, as the ratchet 19 rotates forward together with the reel 13, its protruding operating surface 31 is pushed away by the protruding operating portion 29 of the spring 27, and from the retracted position indicated by the solid line in FIG. Protrude into a protruding position.

Furthermore, when the loaf '15 is pulled out by the star tag 16, the pulling force of the loaf 15 overcomes the frictional force between the spring 27 and the boss part 26, and the ratchet 19 is moved 27 with the ratchet 19 still protruding. The locking surface 20 of the protruding ratchet 19 rotates in the forward direction along with the starting rotation 2.
1 and start the engine. At this time, the starting load F1 generated between the engaging groove 22 of the starting pulley 21 and the engaging surface 20 of the ratchet 19 is caused by
It is supported by a stopper 23 that supports.

When the starter tap 16 is released, the reel 13 rotates in the opposite direction due to the action of the mainspring u% 17, the rope 15 is wound up, and at the same time the ratchet 19 also rotates in the opposite direction. At this time, the spring 27 which is elastically supported around the reel support shaft 12 is terminated by the frictional force with the boss portion 26. Therefore, as the ratchet 19 rotates in the opposite direction together with the reel 13, the retractable actuating portion 30 of the spring 27 is moved toward its retractable actuating surface 32.
The protruding position shown by the two-dot chain line in Fig. 3 is brought into contact with the! It may be immersed in the immersion position shown by the solid line.

After that, the spring 27 overcomes the force of the mainspring 1T or the frictional force generated between the spring 27 and the boss portion 26, and the spring 27 rotates in the opposite direction together with the ratchet 19 while the ratchet 19 remains retracted, causing the starter knob 16 to move toward the starter case 111tl. All operations end at the point of collision.

According to the above embodiment, when the ratchet 19 is in the retracted state,
The contact force generated between the retraction actuating surface 32 of the ratchet 19 and the retracting actuating portion 30 of the spring 27 is.

Even if the contact force is increased due to engine vibration, the spring 27 will not rotate around the reel support shaft 12f (and will remain in contact with the ratchet 19). To stably hold a ratchet 19 at a retracted position and surely prevent the ratchet 19 from jumping out from the retracted position due to engine photography.

Further, the ratchet 19 can uniformly reduce the starting load F1 acting on its engagement surface without increasing the lever ratio.
---7 Since the stopper 23 supports the stopper 23, the blood pressure acting on the stopper 23 can be reduced. Moreover, the starting load exerted by the engaging groove 22 of the starting pulley 21 on the engaging surface 20 of the ratchet 19! Fl and the stopper 23 are on the back side 33 of the ratchet 19.
What is the supporting load J&F2 on?

As shown in FIG. 3, since they are substantially opposite to each other and have substantially the same size, there is almost no load acting on the ratchet support shaft 18, and there is no surface pressure acting on the J ratchet support shaft 18.
:@Can be reduced. Therefore, in recoil starters used in outboard motors, for example, when the stopper 23° ratchet support shaft 18 is made of resin or covered with a resin bushing to prevent seawater from getting salty, it is possible to prevent such damage. There is no fear that the stopper 23 and the ratchet support shaft 18 will be damaged under the action of large blood pressure.

As described above, in the recoil starter according to the present invention, the retraction operation surface of the ratchet forms an arc centered on the reel support shaft when the ratchet is in the retracted state, and the stopper that supports the ratchet in the protruding position The rear side of the engaging surface for the activation date of the ratchet is supported.

Therefore, when the ratchet is in the retracted state, the contact force generated between the retractable operating surface of the ratchet and the retractable operating part of the actuator will be directed toward the reel support shaft, and if the contact force becomes a dog due to engine vibration. However, the actuator does not rotate around the reel support shaft and maintains contact with the ratchet.

It is possible to stably hold the ratchet in the retracted position and prevent it from popping out. In addition, the ratchet can reduce the starting load acting on the locking surface without increasing the starting load due to the lever ratio (because it is supported by the stopper, the surface pressure acting on the stopper can be reduced). The starting load exerted on the ratchet and the supporting load exerted on the ratchet by the stopper are approximately opposite to each other and have approximately the same magnitude, so there is almost no load acting on the ratchet support shaft. The acting blood pressure can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a bottom view showing a recoil starter according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 shows the main parts of Fig. 1. It is an explanatory diagram. 10°...Recoil starter + 11...Starter case, 12.Parile support shaft, 13°゛°Reel, 15
−゛. Rope, 17... Mainspring, 18... Ratchet support shaft, 19... Ratchet, 20... Engagement surface, 21
...Start 7'-IJ, 22...Engagement groove, 23...
Stopper, 27... Spring, 29... Projection operating portion, 3
0... Recessed operating portion, 31... Projected operating surface, 32...
・Immersive operation surface, 33゛・°back.

Claims (1)

[Claims] (1) A reel that is rotatably supported by the starter case, a winding member that is wound around the reel and allows the reel to rotate in the forward direction when the reel is pulled out, and a winding member that is interposed between the starter case and the reel and has one winding. A mainspring that biases the reel in the opposite rotational direction to wind up the hanging member, a protruding position that is rotatably supported on the side of the reel and that engages with the starting date on the engine side, and a retracted position that does not engage with the starting date. and a ratchet that is elastically supported around the reel support shaft of the starter case, and when the reel rotates forward, the protruding operating portion of the ratchet pushes the protruding operating surface of the ratchet to cause the ratchet to protrude as described above. Protrude into position. The reel is provided with an actuator for retracting the ratchet into the retracting position by bringing the retracting operation part into contact with the retracting operation surface of the ratchet when the reel rotates in reverse. In the recoil starter, the recoil starter includes a stopper that supports the ratchet in the protruding position when the ratchet is in a state of engagement with the start date, and the retractable operating surface of the ratchet is centered around the reel support shaft when the ratchet is depressed in a retractable manner. A coil starter, characterized in that the stopper forms a circular arc and supports a rear side of a retaining surface of the ratchet with respect to the starting pulley.