JPS59153971A - Recoil starter - Google Patents

Abstract

PURPOSE:To ensure stable functionability, by resiliently forcing an actuator to be supported stably to the side of a starter case, in the case of a recoil starter. CONSTITUTION:A ratchet 21 can be swivelled in a distance between its retracting position not engaging with and its protruding position engaging with an engagement groove 23 of a starter pulley 22 in an engine side. A ring shaped supporting groove 26 is formed in the end part of a reel supporting shaft 12. A leaf spring 27 used as an actuator is resiliently supported to the supporting groove 26. This leaf spring 27 is forced to be resiliently supported from the direction crossing at almost a right angle with the swivelling direction of the ratchet 21. Accordingly, force of the ratchet 21, acting on the leaf spring 27 when the ratchet 21 is protruded or retracted by the leaf sring 27, is applied around an axis of the reel supporting shaft 12, that is, in the direction crossing at an almost right angle with the direction resiliently supporting the leaf spring 27, never influencing a forced resilient supporting condition of the leaf spring 27, thus a recoil starter stably functions.

Description

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

Conventionally, glue coil starters for outboard motors, etc., have a reel that 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 by pulling out the reel, and a starter case and reel. a mainspring that is interposed between the two parts and biases the reel in the reverse rotation direction to wind up the winding member; and a protruding position that is rotatably supported on the side of the reel and engages with the starting pulley of the engine 11111. A ratchet that can swing between a retracted position where it does not engage the starting pulley, and a ratchet that is elastically supported around the reel support portion of the starter case and that causes the ratchet to protrude to the protruding position when the reel rotates in the forward direction. , an actuator that retracts the ratchet into the retracted position when the reel rotates in reverse is used.

That is, in the above-mentioned conventional glue coil starter, the winding member is pulled out against the mainspring, the reel is rotated in the forward direction, the ratchet is projected by the actuator, and the ratchet is engaged with the groove of the starting pulley of the engine +111 to start the engine. After the engine is started, the reel is reversely rotated by the action of the mainspring, the winding member is wound onto the reel, and the ratchet is retracted by the actuator.

However, in the above-mentioned conventional glue coil starter, when the ratchet is protruded or retracted by the actuator, the force exerted by the ratchet on the actuator acts on approximately the same plane as the surface on which the elastic force of the actuator exists, and the actuator Affects the repression support status of. Therefore, the actuator changes its pressure support state over time, making it difficult to stably project and retract the ratchet, or to stably hold the ratchet in the retracted position against engine deviation lζ. It becomes difficult to maintain the recoil starter, and there is a risk that it will be difficult to ensure stable operation of the recoil starter.

SUMMARY OF THE INVENTION An object of the present invention is to provide a coil starter that can stably elastically support an actuator on the starter case side and ensure stable operability.

- In order to achieve the above object, the recoil starter according to the present invention is configured such that the actuator is elastically supported from a direction substantially perpendicular to the swinging direction of the ratchet.

Embodiments 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 line Hu in FIG. 1.

The starter 1-s 11 is fixed, for example, to the upper part of the main body of an outboard motor engine. In the center of Stark Case 11 (Sai,
The reel support shaft 12 is fixed by an identification bolt 13,
A reel 14 is rotatably supported on the reel support shaft 12. A rope 16 serving as a winding member in the present invention I is wound around the winding groove 15 on the outer periphery of the reel 14. The drawn-out end of the rope 16 is connected to a stark knob 18 which is supportable at the rope outlet 17 of the starter case 11 . That is, the starter knob 18 allows the II-rule 14 to rotate forward by pulling out the rope 16.

A mainspring 19 is interposed between the stark case 11 and the reel 14, and the mainspring 19 urges the reel 14 in the opposite rotation direction for winding the rope 16.

A ratchet support shaft 20 is installed on the side surface of the reel 14 in alignment with the reel support shaft 12, and the approximate center of the ratchet 21 is rotatably mounted on the ratchet support shaft 20.
It is held. The ratchet 21 has two positions: a retracted position in which it does not engage the engagement groove 23 of the engine-side starting pulley 22, shown by a solid line in FIG. The lock at the protruding position to be engaged can be swung. The ratchet 21 contacts a retraction stopper 24 provided on the reel 14 in the retracted position,
At the protruding position, it can come into contact with a protruding stopper 25 formed on the reel 14.

A link-shaped support groove 26 is formed at the tip of the reel support shaft 12, as shown in an enlarged view in FIG. The support groove 26 is provided with a leaf spring 2 as an actuator in the present invention.
7 is supported by oppression. The leaf spring 27 has a substantially half-ring shape, as shown in FIG. 4, and has a wave shape in the thickness direction. The cylinder inner surfaces 26A, 2
This makes it possible to obtain a frictional force between 6B and 7. That is, this plate spring 27 is supported by elastic pressure from a direction substantially perpendicular to the swinging force direction of the ratchet 21.

Both free ends of the plate spring 27 and both sides of the ratchet 21 relative to the ratchet support shaft 20 are connected by arch-shaped connecting links 28 and 29, respectively, as shown in FIG. That is, under the plate spring 271-t, which is elastically supported in the axial direction around the IJ-reel support shaft 12, a frictional force is generated between the cylinder inner surfaces 26A and 26B of the support groove 26, and the reel Ratchet 2 during forward rotation of 14
1 is made to protrude to the protruding position, and the ratchet 21 can be retracted to the retracted position when the reel 14 rotates in reverse.

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

When the rope 16 is pulled out by the stark knob 18, the reel 14 rotates forward in the direction shown by the arrow in FIG. 1, and the ratchet 21 supported on the reel support shaft 12 also rotates forward. On the other hand, the plate spring 27cm1 is elastically supported around the reel support shaft 12, and the inside surfaces 26A and 2 of the support groove 26
Since the ratchet 21 is stationary due to the frictional force with the reel 6B, the ratchet 21, which is connected to the leaf spring 27 through the connecting links 28 and 29, rotates forward together with the reel 14, as shown by the solid line in FIG. It protrudes from the retracted position to the protruding position shown by the two-dot chain line.

Further, when the rope 16 is pulled out by the starter knob 18, the pulling force of the rope 16 overcomes the frictional force between the leaf spring 27 and the inner surfaces 26A and 26B of the support groove 26, and the leaf spring 27 pulls the ratchet 21. Both the protruding ratchet 5, 21 and L rotate forward, and the protruding ratchet 21 engages with the engagement groove 23 of the starting pulley 22 to start the engine.

When the Stark knob 18 is released, the reel 14 rotates in the opposite direction due to the action of the mainspring 19 and the rope 16 is not wound up, and at the same time the ratchet 21 also rotates in the opposite direction.

At this time, the leaf spring 27 that is supported elastically around the reel support shaft 12 is located at both inner sides 126A of the support groove 26.

26B! The ratchet 21, which is held stationary by the frictional force of the plate 27 (!l) and is connected by the series link 28, 29, rotates as the reel 14 rotates in the opposite direction, as indicated by the two-dot chain line in FIG. It immerses from the protruding position shown to the immersed position shown by the solid line.

After that, the force of the mainspring 19 is applied to the leaf spring 27 and the support groove 26.
Overcoming the frictional force generated between the inner surfaces 26A and 26B of the plate spring 27, the plate spring 27 rotates in the opposite direction with the ratchet 21 while keeping the ratchet 21 recessed, and the starter knob 18 collides with the rope outlet 17. All operations end at this point.

According to the above embodiment, the ratchet 21 by the plate spring 27
When protruding or retracting, the force exerted by the ratchet 21 on the leaf spring 27 is approximately perpendicular to the axis of the reel support shaft 12, that is, the direction in which the leaf spring 27 is elastically supported (the axial direction of the reel support shaft 12), There is no effect on the elastic support state of the leaf spring 27. Therefore, the plate spring 27 is always stably supported under a predetermined elastic support state, and the ratchet 21
It is possible to stably protrude or retract the ratchet 21, and to stably hold the ratchet 21 in the retracted position with respect to engine photography, making it possible to ensure stable operability of the recoil starter.

Further, in the above embodiment, the plate springs 27 (!: ratchets 1-21.!:) are connected via arch-shaped connecting links 28, 29. Therefore, when the engine is started, the starting pulley 22 is engaged. Also when an impact force is applied to the ratchet 21 as it starts to engage with the matching groove 23, or when an impact force is applied to the ratchet 21 due to being struck by the inner circumference of the starting pulley 22 immediately after the engine starts. , those impact forces are attenuated by the elastic deformation of the bow-shaped connecting links 28 and 29, and the plate spring 27 and the connecting links 28.2
The occurrence of damage due to the impact force described in No. 9 is prevented, and the durability of the recoil starter can be improved.

FIG. 6 is a bottom view showing the main parts of a recoil starter according to another embodiment of the present invention, and FIG. 7 is a sectional view taken along the line ■-■ in FIG. 6.

The difference between this embodiment and the embodiments shown in FIGS. 1 and 2 is that the connection link 28.2 in the embodiment
9 was removed. That is, a mounting plate 33 is fixed to the upper end of the reel support shaft 31 by a fixing bolt 32, and an actuator 35 is elastically supported in a support groove 34 formed between the reel support shaft 31 and the mounting plate 33. ing. The actuator 35 is ring-shaped and has a wave shape in the plate thickness direction, and is attached to the support groove 34 under elastic deformation in the plate thickness direction. It consists of a protruding actuating part 37 and a retracting actuating part 38, each of which extends substantially tangentially from the position and forms a substantially U-shape together with the leaf spring part 36. During forward rotation of the reel, the protruding actuating portion 37 engages with the protruding locking surface 21A of the ratchet 21 similar to that in the previous embodiment, and moves the ratchet 21 from the retracted position indicated by the two-dot chain line in FIG. 6 as indicated by the solid line. When the reel rotates in reverse, the retractable actuating portion 38
By engaging with the retractable engagement surface 21B of the ratchet 21, the ratchet 21 can be retracted from the protruding position shown by the solid line in FIG. 6 to the retracting position shown by the two-dot chain line.

Also in the case of the modification shown in FIGS. 6 and 7,
The leaf spring portion 36 of the actuator 35 is elastically supported from a direction substantially perpendicular to the swinging force direction of the ratchet 21 . Therefore, when the ratchet 21 is protruded or retracted by the actuator 35, the force exerted by the ratchet 21 on the actuator 35 is approximately perpendicular to the direction in which the actuator 35 is supported elastically, and has no effect on the elastically supported state of the actuator 35. I have nothing to give. Therefore, the actuator 35 is always stably supported under a predetermined elastic support state, and stable operability of the recoil starter can be ensured.

As described above, the recoil starter according to the present invention is configured to elastically support the actuator that allows the ratchet to protrude or retract when the reel rotates forward or backward, from a direction substantially perpendicular to the swinging force direction of the ratchet. This is what I did. Therefore, when the ratchet is protruded or retracted by the actuator, the force exerted by the ratchet on the actuator is substantially perpendicular to the direction in which the actuator is elastically supported, and does not affect the elastically supported state of the actuator. Therefore, the actuator is always stably supported under a predetermined elastic support state, and stable operability of the recoil starter can be ensured.

[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 line ■-■ in Fig. 1, and Fig. 3 is an enlarged view of the main part of Fig. 2. FIG. 4 is a front view showing the plate spring in the same embodiment, FIG. 5 is a side view showing the plate spring and connecting link in the same embodiment, and FIG. A bottom view showing the main parts of a recoil starter according to another embodiment of the invention, FIG. 7 is \Q1 in FIG.
It is a cross-sectional view along the -■ line. 10... Recoil starter, 11... Starter case,
12.31 ・Reel support shaft, 14 Reel, 1
G...Rope, 19...Spring, 20...
・・Ratchet support shaft, 21・・Ratchet, 22・
・Starting pulley, 23...Engagement groove, 26.34
... Support groove, 27 ... Leaf spring, 35 ... Actuator,
36...Plate spring part. Agent Patent Attorney Osamu Shiokawa

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 by pulling out the reel, and a winding member that is interposed between the seven reels of the starter case. A mainspring that biases the reel in the opposite rotation direction for winding up the hanging member is rotatably supported on the side of the reel, and has a protruding position where it engages with a starting pulley on the engine side and a retracted position where it does not engage with the starting pulley. A ratchet that can be swung between a ratchet and a reel supporting portion of the starter case is supported by force, and when the reel rotates in the forward direction, the ratchet is projected to the above-mentioned protruding position, and when the reel is rotated in the reverse direction, the ratchet is retracted into the above-mentioned retracted position. A recoil starter comprising an actuator, wherein the actuator is elastically supported from a direction substantially perpendicular to the swinging force direction of the ratchet.