JP2008051041A - Power accumulation type starter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power accumulation type starter device capable of reducing a manufacturing cost, free from an influence of attaching a recoil spring, with high durability. <P>SOLUTION: This power accumulation type starter device has a cam engagement part 23 provided in a shaft part lower end part, and a cam 34 arranged inside a shaft part insertion hole of a power accumulation spring holder 33, and engaged with the cam engagement part to allow power-accumulation-directional rotation of the power accumulation spring holder 33, and to block an anti-power-accumulation-directional rotation thereof. The cam is energized along a cam engagement part direction by the spring stored inside the shaft part insertion hole of the power accumulation spring holder, and is engaged with a locking face part of the cam engagement part, when the power accumulation spring holder is rotated along an anti-power-accumulation direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an energy accumulation starter device, and more particularly to an improvement of an energy accumulation starter device including a one-way rotation mechanism that allows only one-direction rotation of an energy accumulation spring holder.

2. Description of the Related Art Conventionally, as a power accumulation type starter device, for example, there is a power accumulation type starter device configured to accumulate power in a power accumulation spring in a state where a ratchet pulley is fixed by a compression force of an engine or other means.
In such a conventional accumulator starter device, an accumulator spring capable of accumulating up to a driving force capable of starting the engine, an accumulator spring holder for storing the accumulator spring, and a recoil rope are provided. A drive reel wound and capable of driving the energy storage spring holder, a ratchet pulley to which the drive force accumulated in the energy storage spring is transmitted, and the drive reel, the energy storage spring holder and the ratchet pulley are rotatable A shaft portion that is pivotally supported and a case that can store the accumulator spring holder and the drive reel are provided.

When the engine is started, the recoiling rope is pulled out and rotated in a state where the drive reel and the accumulator spring holder are coupled, so that the accumulator spring stored in the accumulator spring holder is wound up and stored. To help.
In this case, for example, in the case where the drawing operation is stopped once and the recoil rope is returned in the middle of the drawing stroke of the recoil rope, and then the drawing operation is performed again, the storage is performed when the recoil rope is returned. It is necessary to prevent a situation in which the urging force accumulated in the force spring is released and the force accumulation spring holder rotates in the reverse direction of the force accumulation.
From such a viewpoint, conventionally, the accumulator starter device is provided with a one-way rotation mechanism.

Conventionally, such a one-way rotation mechanism has, for example, an engagement recess provided on the outer peripheral portion of the accumulator spring holder and a predetermined portion of the upper portion of the case bulging outwardly, There was an accumulator starter device provided with a ratchet mechanism having a ratchet arranged in a tangential direction with respect to the part.
In such a conventional accumulator starter device, when the accumulator spring holder rotates in the accumulator direction, the ratchet constituting the ratchet mechanism only slides on the outer periphery of the accumulator spring holder. Therefore, the accumulator spring holder can rotate, but when the accumulator spring holder tries to rotate in the counter-accumulation direction, the ratchet is engaged with the engagement recess formed in the peripheral surface portion of the accumulator spring holder. In combination, the power storage spring holder is configured to prevent reverse rotation.

However, in the accumulation type starter device having such a conventional ratchet mechanism outside the accumulation spring holder, the case bulges outward by the portion of the ratchet mechanism. In addition, the engagement recess of the ratchet and the energy storage spring holder comes into contact with each other when the energy storage spring holder rotates, and each time it makes a contact noise, so there is a problem that the noise is high during power storage. It was.
Conventionally, a one-way rotation mechanism using a cylindrical needle type clutch mechanism has also been used. Such a needle type clutch is configured as a one-way clutch that is disposed around a shaft portion through which the accumulator spring holder is inserted and allows only rotation of the accumulator spring holder in the accumulator direction.

However, in such a conventional one-way clutch, the needle type clutch main body is made of metal and needs to satisfy a predetermined accuracy, so that it is expensive and the shaft on which the needle type clutch main body is press-contacted. The part also needs to be made of a high-hardness metal, and as a result, there is a problem that the manufacturing cost of the accumulator starter device increases.
On the other hand, in view of such circumstances, conventionally, a disc-shaped ratchet member is disposed on the shaft portion, and the accumulating spring holder between the ratchet mechanism and the engaging portion provided on the back surface portion of the accumulating spring holder. There has also been an energy accumulation type starter device that includes a one-way rotation mechanism configured to engage in rotation in the opposite energy accumulation direction and prevent rotation in the opposite energy accumulation direction (Patent Document 1).
This one-way rotation mechanism further forms an outer shaft portion for housing the ratchet mechanism on the lower outer side of the shaft portion through which the accumulating spring holder is inserted, and the lower surface of the accumulating spring holder is formed by the upper end of the outer shaft portion. The ratchet mechanism is housed in the gap between the shaft portion and the outer shaft portion.

This ratchet mechanism is engaged and fixed at the upper end portion of the inner peripheral surface portion of the outer shaft portion in a state in which it cannot rotate in the axial direction, and can be engaged with an engagement convex portion provided on the accumulator spring holder. A disk-shaped ratchet member having claws, a spring disposed below the ratchet member, and constantly urging the ratchet member toward the accumulator spring holder, and a protrusion projecting from the lower surface of the accumulator spring holder It is comprised by the joint convex part.

If it is the accumulation type starter device which has the one-way rotation mechanism described in this patent document 1, since the magnitude | size of the whole case does not enlarge, and since a metal needle clutch is not used, accumulation power is obtained. The manufacturing cost of the type starter device can also be reduced.
However, in such a conventional one-way rotating mechanism, since the outer shaft portion for accommodating the ratchet mechanism is further provided outside the lower portion of the shaft portion, the diameter of the entire shaft portion is large. Become.

Accordingly, the radial dimension of the recoil spring housing portion of the drive reel in which the recoil rope is wound around the outer periphery and the recoil spring is housed therein is also reduced, and as a result, the recoil spring to be equipped needs to be equipped with a small number of turns. There is. Therefore, in the accumulator type starter device provided with such a one-way rotation mechanism, there has been a problem that it may not be completely wound depending on the length of the recoil rope.

JP 2003-148304 A

The present invention has been made to solve such a conventional problem, and the problem can reduce the manufacturing cost and improve the durability without affecting the mounting of the recoil spring. The object is to provide a rich accumulation-type starter device.

In order to solve such a problem, in the invention described in claim 1, a power storage spring that can store power until reaching a driving force that can start the engine, a power storage spring holder that stores the power storage spring, A drive reel wound with a recoil rope and capable of driving the power storage spring holder, a ratchet pulley to which the drive power stored in the power storage spring is transmitted, and the drive reel, power storage spring holder and ratchet pulley A driving force that has a shaft portion that is rotatably supported, and a case that can store the above-described power storage spring holder and driving reel, and that can store power until the engine can be started and can start the engine. Is a power accumulation type starter device configured to start the engine by supplying a driving force when the engine reaches the lower end of the shaft portion. The cam engaging portion and the shaft insertion hole of the energy storage spring holder are arranged so as to allow rotation of the energy storage spring holder in the energy storage direction and prevent rotation in the counter energy storage direction. A cam that engages with the cam engaging portion, and the cam is urged toward the cam engaging portion by a spring housed in the shaft insertion hole of the power storage spring holder, and the power storage When the spring holder rotates in the counter-accumulation direction, the spring holder is configured to engage with the locking surface portion of the cam engaging portion.

  Therefore, in the first aspect of the present invention, the cam engagement portion provided at the lower end portion of the shaft portion and the shaft insertion hole portion of the energy storage spring holder are disposed, and A cam that engages with the cam engaging portion so as to allow rotation in the accumulating direction and prevent rotation in the counter-accumulating direction, and a spring that urges the cam to be in constant pressure contact with the cam engaging portion Thus, a one-way rotation mechanism is configured.

According to a second aspect of the present invention, the case is made of synthetic resin, the shaft portion is formed integrally with the case, and the cam engaging portion is provided at a lower end portion of the shaft portion main body. It is integrally formed on the large-diameter shaft portion formed larger in diameter than the shaft body.

  Therefore, in the invention described in claim 2, the cam engaging portion is formed integrally with the shaft body and the large-diameter shaft portion.

In the invention according to claim 1, unlike the conventional case, it is not necessary to form a bulging portion for attaching the ratchet to the case, the case does not increase in size, and the metal needle with high hardness is used. The manufacturing cost of the accumulation type starter device can be reduced because it is not necessary to use a clutch-type clutch body and it is not necessary to use a metal shaft portion having high hardness.
Furthermore, unlike the conventional energy accumulation type starter device, it is not necessary to further erect the outer shaft portion for storing the ratchet mechanism outside the lower portion of the shaft portion, so that the diameter of the entire shaft portion increases. It can be avoided.

As a result, it is possible to equip a recoil spring with a sufficient number of windings, and it is possible to provide an accumulator starter device that can be reliably wound regardless of the length of the recoil rope.
In the invention according to claim 2, since the case is made of a synthetic resin and the shaft portion is formed integrally with the case, it is made of a metal having a high hardness as described above. There is no need to use the shaft portion, and furthermore, the shaft portion can be integrally formed with the case made of synthetic resin, so that the manufacturing cost of the energy storage starter device can be further reduced.

Furthermore, in the invention described in claim 2, the cam engaging portion is integrated with the shaft portion on the large-diameter shaft portion having a diameter larger than the shaft portion, which is connected to the lower end portion of the shaft portion. Even when a large external stress is applied to the cam engaging portion due to the cam always contacting the cam engaging portion due to the rotation of the force storing spring holder during the force storing operation. It can sufficiently withstand the external stress.
As a result, it is possible to provide a power accumulation type starter device that can reliably permit rotation in only one direction, has high reliability, and is more durable.

In addition, since it can be molded integrally with the shaft portion in this way, the thickness, length, etc. of the cam engagement portion can be easily and appropriately changed according to various product specifications, and the material to be formed By changing the above, it is possible to adjust the desired durability and manufacturing cost, and it is possible to easily form various product variations.

Hereinafter, based on an embodiment shown in the accompanying drawings, an accumulation type starter device 10 according to the present invention will be described in detail.
As shown in FIGS. 1 and 2, the accumulator starter device 10 according to the first embodiment accumulates power until reaching a driving force that can start the internal combustion engine, and generates a driving force that can start the engine. In the case of reaching, the driving force is supplied to start the engine.

That is, the accumulator type starter device 10 according to the present embodiment includes a recoil spring 11 and a recoil rope 12, and is rotated by a pulling operation of the recoil rope 12 and is initialized by a driving force accumulated in the recoil spring 11 by the rotation. A drive unit 14 having a drive reel 13 that can be returned to a state; a power storage spring holder 33 that stores a power storage spring 15 that stores power by rotation of the drive reel 13; and a drive stored in the power storage spring 15. When the force accumulation portion 16 including the ratchet pulley 24 to which the force is transmitted and the recoil rope 12 are pulled out, the drive portion 14 rotates to cause the energy accumulation spring 15 to accumulate force. Thus, the drive reel 13 and the accumulator spring holder 33 are connected only when rotating in the accumulator direction. In the state where the one-way ratchet mechanism 17 and the one-way ratchet mechanism 17 are connected to the drive reel 13 and the power storage spring holder 33, the power storage of the power storage spring holder 33 is performed when the recoil rope 12 is pulled out. A one-way rotation mechanism 50 that allows rotation in the direction and prevents reverse rotation of the force accumulation spring holder 33 in the counter-accumulation direction when the recoil rope 12 is returned, and accumulation of the energy accumulation portion 16. In the case of releasing the driving force accumulated in the accumulator 16 and the driven portion 18 having a crank pulley 49 that is driven by receiving the driving force accumulated in the force spring 15 and connected to the crankshaft of the engine. A driven side linkage configured to connect the ratchet pulley 24 and the crank pulley 49. And a mechanism portion 19.

In the present embodiment, the case 28 is made of synthetic resin, and the case main body 29 and the shaft portion 31 are integrally molded. That is, a shaft portion 31 is erected at the center portion of the bottom portion 30 of the case 28, and the shaft portion 31 constitutes the drive reel 13 and the power storage portion 16 that constitute the drive portion 14, and the power storage spring 15 A force storage spring holder 33 and a ratchet pulley 24 are rotatably inserted and fixed via bolts 20.

The shaft portion 31 includes a large-diameter shaft portion 21 formed at a lower end portion with a predetermined height and a shaft body portion 22 extending upward from the large-diameter shaft portion 21.
The large diameter shaft portion 21 is formed to have a height dimension substantially the same as the height dimension L of the drive reel 13 around which the recoil rope 12 is wound, and the drive reel 13 is rotatable on the large diameter shaft portion 21. It is inserted. A cam engaging portion 23 constituting the one-way rotating mechanism 50 is formed on the upper surface portion of the large-diameter shaft portion 21.

In the present embodiment, the one-way rotation mechanism 50 is inserted into the cam engagement portion 23 provided at the lower end portion of the shaft portion 31 and the shaft portion insertion hole portion 36 of the energy storage spring holder 33. A cam 34 that is disposed and engages with the cam engagement portion 23 so as to allow rotation of the force accumulation spring holder 33 in the direction of force accumulation and prevent rotation in the direction opposite to the force accumulation; A spring 41 is housed in the hole 36 and constantly urges the cam 34 toward the cam engaging portion 23.

As shown in FIG. 2, in the present embodiment, the cam engaging portion 23 constituting the one-way rotation mechanism 50 is configured by a plurality of claw projections 25 having a substantially right side triangular shape, and the claw projections Six 25 are formed over the whole peripheral part of the lower end part of the shaft part 31. The bottom surface portion of the claw protrusion 25 is formed integrally with the upper surface portion of the large-diameter shaft portion 21, and the inner side surface portion of the claw protrusion 25 is formed integrally with the lower end portion of the shaft portion 31.

The claw protrusion 25 is formed so as to protrude upward from the shaft portion 31, and the inclined surface portion 26 that gradually increases in height along the rotational direction stored in the power storage spring holder 33, and the accumulator. And a locking surface portion 27 formed substantially at right angles to the upper surface portion 32 and capable of facing the rotational direction in which the force spring holder 33 is not stored, and an upper side end portion of the inclined surface portion 26 The top part 33 is formed in.

  On the other hand, in the present embodiment, the cam 34 constituting the one-way rotation mechanism 50 is engaged with the locking surface portion 27 of the claw protrusion 25 when the force accumulation spring holder 33 rotates in the counter force accumulation direction R2. The springs 41 are configured to be joined together and are urged in the direction of the cam engaging portion 23 by a spring 41 accommodated in the shaft insertion hole 36 of the accumulator spring holder 33.

  As shown in FIG. 2, the cam 34 is formed in a short cylindrical shape, and has a peripheral wall portion 37 and a shaft portion insertion hole 38 formed in the peripheral wall portion 37. The lower end portion of the peripheral wall portion 37 corresponds to each of the plurality of claw projections 25 constituting the cam engaging portion 23, and each of the force accumulation spring holders 33 is rotated when the force accumulation spring holder 33 rotates in the anti-energy accumulation direction R2. A cam claw portion 40 having a locking surface portion 39 that can be engaged with the locking surface portion 27 of the claw projection 25 is formed.

  As shown in FIG. 3, the cam claw portion 40 is formed as a convex portion having a substantially right side triangular shape with the same contour shape as the claw projection 25, and is similar to the claw projection 25 over the entire peripheral wall portion 37. Six pieces are formed over the whole area.

  On the outer side of the peripheral wall portion 37 in the radial direction, provided on the outer side of the cam claw portion 40, and when mounted on the force accumulation spring holder 33, on the inner side surface portion of the shaft portion insertion hole portion 36 of the force accumulation spring holder 33, Six cam projections 43, which are slidably engaged with six cam fixing recesses 42 formed at equal intervals, are formed at equal intervals along the axial direction. It is provided so as to cover the outer side of the top portion 44 of 40.

As shown in FIGS. 2 and 3, the shaft portion insertion portion 51 formed at the center portion of the energy storage spring holder 33 extends to the cam storage portion 45 formed on the lower side and the cam storage portion 45. And a shaft insertion portion 46 having a diameter smaller than that of the cam storage portion 45.
The cam housing portion 45 is formed to have the same diameter as the outer diameter of the large-diameter shaft portion 21, and the depth dimension is the sum of the height of the cam and the height of the claw protrusion. It is formed in substantially the same manner as the length.

Accordingly, as shown in FIG. 1, when the cam 34 is mounted on the shaft portion 31 in a state where it is stored in the cam storage portion 45 of the accumulator spring holder 33, the cam storage portion 45 covers the outer side of the claw protrusion 25. In this state, the lower end portion of the cam housing portion 45 is configured to be placed on the periphery of the upper surface portion 32 of the large-diameter shaft portion 21.

Further, in the present embodiment, the shaft insertion portion 51 is formed with a large length dimension over substantially the entire vertical direction of the shaft body 22, and the upper end portion of the shaft insertion portion 46 is formed at the upper end portion. A skirt that is formed with a shaft insertion hole portion 36 and that receives the cam engagement portion 23 from the outside at the lower end portion of the cam storage portion 45 and contacts the upper surface portion 32 of the large-diameter shaft portion 21. A portion 52 is formed, and the accumulator spring holder 33 is rotatably engaged with the shaft portion 31 by the shaft portion insertion hole portion 36 and the skirt portion 52.

A diameter dimension of the shaft insertion portion 46 is formed larger than an outer dimension of the shaft portion 31, and a spring 41 that biases the cam 34 is accommodated therein.

The spring 41 is wound around the shaft portion 31 such that the upper end portion is pressed against the peripheral edge portion of the insertion hole portion 36 and the lower end portion is pressed against the upper surface portion of the cam 34 in the shaft insertion portion 46. It is stored.

Therefore, as shown in FIG. 1, when the accumulator spring holder 33 is attached to the shaft portion 31, the spring 41 is disposed in a contracted state in the shaft insertion portion 46, and the cam 34 is moved by the urging force of the spring 41. The cam 34 is stored in the cam storage portion 45 in a state of being biased and engaged with the claw protrusion 25.

Hereinafter, the operation of the accumulator starter device 10 including the one-way rotation mechanism 50 according to the present embodiment will be described.
When the internal combustion engine is started using the accumulator starter device 10 according to the present embodiment, the operator pulls out the recoil rope 12 through the handle portion.

In this case, the ratchet pulley 24 is connected to a crank pulley 49 via a ratchet 48, and the crank pulley 49 is connected to a crankshaft on the internal combustion engine side. The pulley 24 is fixed in a stopped state. One end portion of the force accumulation spring 15 is fixed to the ratchet pulley 24, and the other end portion is fixed to an engaging portion provided on the inner peripheral surface portion of the force accumulation spring holder 33.

When the recoil rope 12 is pulled out, the drive reel 13 and the accumulator spring holder 33 are connected by the one-way ratchet mechanism 17 and the cam 34 disposed on the cam engaging portion 23 is connected to the cam. On the claw projection 25 constituting the joint portion 23, the inclined surface portion 26 of the claw projection 25 is rotated in a direction to move upward.

In this case, the top portion 44 of the cam claw portion 40 moves upward on the inclined surface portion 26 of the claw protrusion 25 constituting each of the cam engaging portions 23 to get over the top portion 35, and the inclined surface portion 26 of the adjacent claw protrusion 23. The rotational movement of moving from the lowest end to the top 35 is repeated.
As a result, when the recoil rope 12 is pulled out, the drive reel 13 and the power storage spring holder 33 are integrally rotated in the power storage direction R1 and stored in the power storage spring 15.

In this case, the cam 34 repeatedly moves up and down when the top 35 is moved over. However, the spring 41 absorbs the stroke of the vertical movement of the cam 34, and the six engaging convex portions 43 of the cam 34 are stored in the accumulating spring holder. Since the cam 34 is slidably engaged in the corresponding six engaging recesses 42 formed on the inner peripheral surface portion of the cam storage portion 45, the cam 34 is axially moved in the engagement recess 42. The accumulator spring holder 33 rotates while moving up and down along the axis.

On the other hand, for example, when the operator stops the drawing operation of the recoil rope 12 during one stroke of the recoil rope 12, the recoil rope 12 is wound around the drive reel 13 by the biasing force 11 of the recoil spring. At the same time, the energy storage spring holder 33 tries to rotate in the anti-energy storage direction R2 by the urging force of the stored energy storage spring 15.

In this case, the urging force in the anti-accumulation direction R2 by the accumulation spring 15 acts, and at the same time, the cam 34 rotates in the anti-accumulation direction R2, and the locking surface 39 of each cam claw portion 40 of the cam 34 is Since the cam 34 engages with the locking surface 27 of each claw projection 25 constituting the cam engaging portion 23, the cam 34 is engaged with and fixed to the cam engaging portion 40, and the force accumulation direction of the force accumulation spring holder 33 is reversed. The rotation to R2 is prevented, and at this point, the accumulator spring holder 33 stops.

In the energy storage starter device 10 according to the present embodiment, the cam 34 constituting the one-way rotation mechanism of the energy storage spring holder 3 is stored in the cam of the energy storage spring holder 33 by the six fixed protrusions 43. The cam 34 is securely fixed to the accumulating spring holder 33 because it is fixed to the six fixing recesses 42 formed in the portion 45 so as to be slidably engaged along the axial direction. Thus, the engagement state between the cam 34 and the accumulator spring holder 33 can be reliably ensured even over time, and a durable one-way rotation mechanism 50 can be provided.
Further, in the present embodiment, the cam 34 has six cam claws 40, and the large urging force of the accumulator spring 15 acting at the time of rotation prevention is combined with the six cam claws 40 and the cam engagement. Since it is received by the six claw projections 25 constituting the joint portion 23, the large urging force of the accumulating spring 15 can be distributed and supported, and the one-way rotation mechanism 50 having more durability can be provided. .

Further, in the present embodiment, the claw projection 25 is formed such that the bottom surface portion of the claw projection 25 is integrally formed with the upper surface portion of the large-diameter shaft portion 21 and the inner side surface portion of the claw projection 25 is a shaft. Since the lower end portion of the portion 31 is integrally formed, the claw projection 25 for receiving the load due to the biasing force of the accumulating spring 15 is firmly formed integrally with the large diameter shaft portion 21 and the lower end portion of the shaft portion 31. Thus, even when the urging force of the accumulator spring 15 is applied many times, it is possible to provide a high-quality one-way rotation mechanism 50 with little deterioration over time.

Further, in the cam 34 according to the present embodiment, a fixed convex portion 43 on which the urging force of the accumulating spring 15 acts most is formed integrally with the outside of the six cam claws 40. As a result, it is possible to provide a unidirectional rotating mechanism 50 having a durability that can disperse and support stress acting on the cam claw portion 40 and can withstand long-term use.

In the accumulator spring holder 33 according to the present embodiment, the shaft insertion hole portion 36 formed at the upper end portion of the shaft insertion portion 46 and the lower end portion of the cam storage portion 45 are formed. Since the cam engaging portion 23 is accommodated from the outside and is rotatably engaged with the shaft portion 31 by the skirt portion 52 that abuts on the upper surface portion 32 of the large-diameter shaft portion 21, the accumulating spring 15 The power storage spring holder 33 that rotates at a high speed can be supported at two points spaced apart from each other at the upper end portion and the lower end portion of the shaft insertion portion 51 formed with a large length in the vertical direction. Therefore, it is possible to provide a power accumulation starter device that can rotate with respect to the shaft portion 11 and has high durability even over time.

In the present embodiment, an accumulation type starter of the type that accumulates power by rotating the accumulation spring holder 33 in a state where the ratchet pulley 24 is fixed using the compression force on the engine side will be described as an example. However, the present invention is not limited to the above-described embodiment, and the so-called lock-type power storage type is configured to store power by rotating the power storage spring holder 33 in a state where the rotation of the ratchet pulley 24 is forcibly blocked. It may be applied to a starter.

  The accumulation type starter device according to the present invention can be applied to all accumulation type starters used for starting an internal combustion engine.

It is a cross-sectional view which concerns on one Embodiment which shows the accumulation type starter apparatus which concerns on this invention. It is a disassembled perspective view which shows the structure of the one way rotation mechanism of the accumulation spring holder used for the accumulation type starter apparatus which concerns on this invention. It is a disassembled perspective view which shows the structure of the one way rotation mechanism of the accumulation spring holder used for the accumulation type starter apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Accumulation type starter apparatus 11 Recoil spring 12 Recoil rope 13 Drive reel 14 Drive part 15 Accumulation spring 16 Accumulation part 17 One-way ratchet mechanism part 18 Drive part 19 Drive side connection mechanism part 20 Bolt 21 Large diameter shaft part 22 Shaft part Main body 23 Cam engaging portion 24 Ratchet pulley 25 Claw projection 26 Inclined surface portion 27 Locking surface portion 28 Case 29 Case main body 30 Bottom portion 31 Shaft portion 32 Top surface portion 33 Power storage spring holder 34 Cam 35 Top portion 36 Shaft portion insertion hole portion 37 Peripheral portion 39 Locking surface portion 40 Cam claw portion 41 Spring 42 Cam fixing concave portion 43 Fixing convex portion 44 Top portion 45 Cam storage portion 46 Shaft insertion portion 48 Ratchet 49 Crank pulley 50 Unidirectional rotation mechanism 51 Shaft insertion portion 52 Skirt portion

Claims (2)

A power storage spring that can store power until it can start the engine, a power storage spring holder that houses the power storage spring, and a drive reel that is wound with a recoil rope and can drive the power storage spring holder A ratchet pulley to which the driving force accumulated in the energy storage spring is transmitted, a shaft portion on which the drive reel, the energy storage spring holder, and the ratchet pulley are rotatably supported, and the energy storage spring holder and the drive It has a case that can store the reel, and it is configured to accumulate power until it reaches the driving force that can start the engine, and to supply the driving force and start the engine when it reaches the driving force that can start the engine A stored energy starter device,
The cam engagement portion provided at the lower end of the shaft portion and the shaft insertion hole portion of the energy storage spring holder are allowed to rotate in the energy storage direction of the energy storage spring holder and in the opposite energy storage direction. A cam engaging with the cam engaging portion so as to prevent rotation of
The cam is urged in the cam engagement portion direction by a spring accommodated in the shaft insertion hole of the energy storage spring holder, and when the energy storage spring holder rotates in the anti-energy storage direction, An accumulator starter device configured to engage with the locking surface portion of the cam engaging portion. The case is made of a synthetic resin, the shaft portion is formed integrally with the case, and the cam engaging portion is provided at a lower end portion of the shaft portion main body and has a larger diameter than the shaft portion main body. The accumulator starter device according to claim 1, wherein the starter device is integrally formed on the large-diameter shaft portion.

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