JP4262659B2 - Engine recoil starter - Google Patents

Description

  The present invention relates to an engine recoil starter.

  Conventionally, there is an engine recoil starter described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-116388). This is configured as follows, as shown in FIGS.

17 to 22 show a configuration of a recoil starter of Patent Document 1 which is a conventional technique.
FIG. 17 is a longitudinal front view of the recoil starter. 18A is a cross-sectional view taken along line XVIII-XVIII in FIG. 17, and FIG. 18B is a cross-sectional view taken along line BB in FIG.

  FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG. 17 and shows a state where the spring winding number measuring means 11 is in the initial position. FIG. 20 is a view in which the drive stop operation means 21 is removed from FIG. FIG. 21 is a view in which the second ratchet pawl 52 is removed from FIG. FIG. 22 is a view showing a state in which the starting rope 34 is pulled from the state shown in FIG.

  It should be noted that the configuration, component, drawing, and reference numerals of each component described in Patent Document 1 have many parts in common with the configuration, component, drawing, and reference numerals of the present patent. Regarding the constituent elements described below in Patent Document 1, the same reference numerals as those of the constituent elements of the present invention are described in order to facilitate understanding of the relationship with the constituent elements of the present invention.

[Basic configuration of recoil starter of Patent Document 1]
Wind the starting rope (34) around the recoil reel (1).
This recoil reel (1) has an input side unidirectional rotation transmission means (2), an input wheel (3), a power storage elastic body (4), an output wheel (5), and an output side unidirectional rotation transmission means (6). The engine start shaft (7) is interlocked and connected through the above.

  The output-side unidirectional rotation transmission means (6) includes an engaging portion (16) provided on the start shaft (7) side and an engaged portion (17) provided on the output wheel (5) side. With.

Reverse rotation prevention means (8) for preventing reverse rotation of the input wheel (3);
A lock mechanism (10) for preventing rotation of the output wheel (5);
An elastic body winding number measuring means (11) for measuring the number of windings of the power storage elastic body (4);
There is provided unlocking means (12) for releasing the lock mechanism (10) when the number of windings of the power storage elastic body (4) reaches the target number of windings.

  A measurement reset means (70) for returning the elastic body winding number measuring means (11) to the initial position is provided. In a state where the elastic body winding number measuring means (11) is returned to the initial position by the measurement reset means (70), the lock mechanism (10) is released by the lock releasing means (12).

  When the elastic body winding number measuring means (11) reaches a predetermined position in conjunction with the pulling operation of the starting rope (34), the lock mechanism (10) is activated to lock the output wheel (5). It is configured as described above.

[Actions and effects of basic configuration]
A measurement reset means (70) for returning the elastic body winding number measuring means (11) to the initial position is provided. When the elastic body winding number measuring means (11) is returned to the initial position by the measurement reset means (70), the lock mechanism (10) is configured to be released. When the measuring means (11) is in this initial position, the output wheel (5) is allowed to rotate.

  From this state, when the start rope (34) is pulled to start the engine, this pulling force is applied to the recoil reel (1), the input side unidirectional rotation transmission means (2), the input wheel (3), and the elasticity for power storage. It is transmitted to the output wheel (5) via the body (4), and the output wheel (5) is rotated, and the engaged portion (17) provided on the output wheel (5) side is rotated. As a result, even if the engaging portion (16) and the engaged portion (17) are not engaged at first, the engaged portion (17) is rotated by pulling the starting rope (34). It is possible to engage with the engaging portion (16).

  When the elastic body winding number measuring means (11) reaches a predetermined position in conjunction with the pulling operation of the starting rope (34), the lock mechanism (10) is activated to lock the output wheel (5). Therefore, after that, the power storage elastic body (4) is wound up by the amount of rotation of the input wheel (3).

  Thus, in the invention of Patent Document 1, before the output wheel (5) is unlocked, the engagement portion (16) of the output-side unidirectional rotation transmission means (6) is pulled by the pulling operation of the starting rope (34). Since the engaged portion (17) can be kept engaged, it is possible to avoid collision between the elastic members for power storage (4) when releasing the stored force, and to eliminate accidents such as breakage and unpleasant noise. Can do.

  Moreover, since the elastic body winding number measuring means (11) is returned to the initial position by the measurement reset means (70), the counting of the number of windings of the power storage elastic body (4) can be started from zero. For this reason, it is guaranteed that the accumulated force corresponding to the target number of windings is stored in the elastic body for power accumulation (4).

  That is, it is possible to prevent a situation in which the accumulating force corresponding to the number of windings of the elastic body for power storage (4) has actually reached the target number of windings but no corresponding power is actually stored. As a result, it is possible to prevent engine start failure due to insufficient power storage.

[Specific configuration of unlocking means (12)]
Specifically, the unlocking means (12) is composed of a single part and is configured to rotate integrally with the measuring ratchet (15) of the elastic body winding number measuring means (11).

  When the measuring ratchet wheel (15) reaches a position corresponding to the target number of windings, the unlocking means (12) is moved to the first passive portion (22) of the drive stop operating means (21) of the lock mechanism (10). ) And the drive stop operation means (21) is switched from the lock position to the lock release position.

  When the measuring ratchet wheel (15) returns to the initial position, the unlocking means (12) drives the second passive part (23) of the drive stop operating means (21) of the lock mechanism (10). Thus, the drive stop operation means (21) is configured to be switched from the lock position to the lock release position.

[Problems of specific configuration of unlocking means (12)]
[Problem a. There is a possibility that the mistaken engagement of the drive stop operating means (21) with the drive stop portion (20) may cause insufficient power accumulated in the power storage elastic body (4), which may easily cause an engine start error. ]

  When the starting rope (34) is pulled in order to start the engine, the measuring pawl wheel (15) of the elastic body winding number measuring means (11) is intermittently fed in conjunction with this. At this time, the unlocking means (21) is also intermittently fed together with the measuring ratchet wheel (15), and accordingly, the drive stop operating means (21) also moves from the unlocking position toward the locking position. .

  At this time, the drive stop operating means (21) has a relatively slow moving speed from the unlocked position to the locked position. There is a risk of making a mistake.

  When this engagement error occurs, the drive stop operating means (21) receives the drive stop portion (20) and the output wheel (5) is turned off with respect to the regular measurement start timing of the measuring ratchet wheel (15). The accumulated power of the power accumulating elastic body (4) is insufficient by the time when the timing to start the rotation is delayed, which may cause an engine start error.

    [Problem b. The dog claw (82) is still separated from the claw receiving part (84) by the time it takes for the dog claw (82) constituting the output side one-way rotation transmission means (6) to start and end. In this state, when the drive stop operation means (21) locks the drive stop portion (22) and prevents the output wheel (5) from rotating, the stored power of the power storage elastic body (4) At the time of output, the dog claw (82) and the claw receiving part (84) may collide and be deformed or damaged. ]

  As the output-side unidirectional rotation transmission means (6), a structure generally shown in FIGS. 14 to 16 may be used. The output side unidirectional rotation transmission means (6) is configured such that the dog claw (82) is guided by the dog claw stand (83) by the rotation of the output wheel (5), and then the claw receiving part (84 ) And the drive shaft (7) is driven to rotate.

  The dog claw (82) is driven before it comes into contact with the claw receiving part (84) by the time it takes for the dog claw (82) to start and end by the rotation of the output wheel (5). The stop operation means (21) locks the drive stop portion (22) to prevent the output wheel (5) from rotating, and the dog claw (82) is still separated from the claw receiving portion (84). The power accumulating elastic body (4) may be accumulated as it is.

  In this case, when the accumulated power of the elastic body for power storage (4) is output by unlocking the lock mechanism (10) after the elastic body for power storage (4) has accumulated power for the target number of windings, The dog claws (82) that are separated from each other collide with the claw receiving portion (84) to generate a collision sound, and the dog claw (82) and the claw receiving portion (84) may be deformed or damaged by impact force. There is.

JP 2004-116388 A

An object of the present invention is to do as follows.
[I]. The unlocking follower constituting the unlocking means suddenly opens the drive stop operation means of the lock mechanism, thereby rapidly moving the drive stop operation means to the lock position and accurately engaging the drive stop portion, This eliminates the shortage of the power storage amount of the power storage elastic body due to the mistake in engagement, and eliminates the engine start error.

  [B]. While the unlocking main moving tool constituting the unlocking means runs idle for the delay distance, the engagement part (dog claw) and the engaged part (claw receiving part) of the output side one-way rotation transmission means are sufficiently connected. By making contact, the engaging portion and the engaged portion do not collide when the accumulated power of the power accumulating elastic body is output, and the occurrence of collision noise, deformation, or breakage is eliminated.

  [C]. During the return movement of the elastic body winding number measuring means to the initial position, the tilt cam portion for lever retracting operation automatically retracts the lock release lever to the disengagement retracted position. Easy to operate and accurate.

  [D]. For this purpose, a single unlocking holding spring performs both of the functions of pressing the unlocking lever constituting the unlocking means to the unlocking holding position and pressing the engaging lever to the engaging action position. Simplify the structure.

  In order to solve the above-described problems, the recoil starter for an engine according to the present invention is configured as follows, for example, as shown in FIGS.

1 to 13 show a first embodiment of a recoil starter according to the present invention.
FIG. 1 is a longitudinal front view of a recoil starter. 2A is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line BB in FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1 and shows a state where the spring winding number measuring means 11 is in the initial position.

  FIG. 4 is a view in which the drive stop operation means 21 is removed from FIG. FIG. 5 is a view in which the second ratchet pawl 52 is removed from FIG. FIG. 6 is a view showing a state in which the starting rope 34 is pulled from the state shown in FIG.

  7 is a cross-sectional view taken along line VII-VII in FIG. 3 or FIG. 8A is a front view of the input wheel 3, and FIG. 8B is a cross-sectional view taken along line BB in FIG. 8A. FIG. 9A is a view of the spring winding number measuring means 11 as viewed from the engine side (however, the drive stop operating means 21 and the first ratchet pawl 51 are omitted). FIG. 9B shows the main part of FIG. 9A and shows the movement of the feed claw 14.

  FIG. 10 shows the unlocking means 12. FIG. 10A is an enlarged view of a portion X in FIG. FIG. 10B is a cross-sectional view taken along the line BB in FIG. FIG. 10C is a cross-sectional view taken along the line CC of FIG. FIG. 11 is a drawing of the portion X in FIG. 3 and shows the action of the unlocking means 12. FIG. 11A shows a state where the unlocking follower 12B is in the unlocking holding position 12Ba. FIG. 11B shows a state in which the unlocking follower 12B has been switched to the lock closing allowable position 12Bb.

  FIG. 12 is a view corresponding to FIG. 10C and shows the function of the lever driving portion 12Aa of the unlocking main moving tool 12A. FIG. 13 is a view corresponding to FIG. 12 and shows the function of the inclined cam portion 12Ab for lever retraction operation of the unlocking main moving tool 12A.

The invention of claim 1. See FIGS.
The invention of claim 1 is configured as follows.
[Basic configuration of recoil starter]

Wind the starting rope (34) around the recoil reel (1).
This recoil reel (1) has an input side unidirectional rotation transmission means (2), an input wheel (3), a power storage elastic body (4), an output wheel (5), and an output side unidirectional rotation transmission means (6). The engine start shaft (7) is interlocked and connected through the above.

  The output-side unidirectional rotation transmission means (6) includes an engaging portion (16) provided on the start shaft (7) side and an engaged portion (17) provided on the output wheel (5) side. With.

Reverse rotation prevention means (8) for preventing reverse rotation of the input wheel (3);
A lock mechanism (10) for preventing rotation of the output wheel (5);
An elastic body winding number measuring means (11) for measuring the number of windings of the power storage elastic body (4);
There is provided unlocking means (12) for releasing the lock mechanism (10) when the number of windings of the power storage elastic body (4) reaches the target number of windings.

  A measurement reset means (70) for returning the elastic body winding number measuring means (11) to the initial position is provided. In a state where the elastic body winding number measuring means (11) is returned to the initial position by the measurement reset means (70), the lock mechanism (10) is released by the lock releasing means (12).

  When the elastic body winding number measuring means (11) reaches a predetermined position in conjunction with the pulling operation of the starting rope (34), the lock mechanism (10) is activated to lock the output wheel (5). It is configured as described above.

[Characteristic configuration of unlocking means (12)]
The unlocking means (12) includes an unlocking main moving tool (12A), an unlocking follower (12B), and a measurement unlocking tool (12C).

  The unlocking main moving tool (12A) and the unlocking tool at the end of measurement (12C) are configured to be linked to the elastic body winding number measuring means (11). The unlocking follower (12B) includes the unlocking holding position (12Ba) for holding the locking mechanism (10) in the unlocking position (21a), and the locking mechanism (10) from the unlocking position (21a) to the locking position ( 21b) is configured to be movable by switching to the lock closing allowable position (12Bb) that permits the moving to the closing movement.

  In conjunction with the pulling operation of the starting rope (34), when the elastic body winding number measuring means (11) advances from the initial position to the predetermined position, the unlocking main moving tool (12A) has a predetermined delay distance. Based on the fact that after unlocking (L1), the unlocking follower (12B) is reached, and the unlocking follower (12B) is switched from the unlocking holding position (12Ba) to the lock enabling position (12Bb). The locking mechanism (10) is released from the unlocking follower (12B) and switched from the unlocking position (21a) to the locking position (21b) to prevent the output wheel (5) from rotating. Constitute.

  The lock release tool (12C) at the end of the measurement is linked to the lock position (21b) when the elastic body winding number measuring means (11) finishes measuring the target winding number. ) To the unlocking position (21a), the lock mechanism (10) is unlocked to output the accumulated power of the power accumulating elastic body (4), and the output wheel (5). The engine start shaft (7) is configured to start and rotate through the output-side unidirectional rotation transmission means (6) in order.

  The unlocking main moving tool (12A) of the unlocking means (12) and the unlocking tool at the end of measurement (12C) may be formed separately or integrally.

[Effects of characteristic configuration of unlocking means (12)]
[ I. When the unlocking follower (12B) suddenly opens the lock mechanism (10), the lock mechanism (10) moves rapidly to the lock position (21b) (for example, the drive stop operation shown in FIGS. 3 and 6). Since the means (21) engages accurately in the drive stop section (20), the power storage elastic body (4) due to this engagement error is not deficient, and the engine start error is eliminated. . ]

  In the first aspect of the invention, when the starting rope (34) is pulled to start the engine, the elastic body winding number measuring means (11) is interlocked with the pulling operation of the starting rope (34). As shown in FIG. 11, the unlocking main moving tool (12A) reaches the unlocking follower (12B) after running the predetermined delay distance (L1) as shown in FIG. The locking mechanism (10) is released from the unlocking follower (12B) by switching and moving the unlocking follower (12B) from the unlocking holding position (12Ba) to the lock closing allowable position (12Bb). The output wheel (5) is prevented from rotating by switching and moving from the unlock position (21a) to the lock position (21b).

  In this way, when the unlocking main drive (12A) switches the unlocking follower (12B) to the lock-in permissible position (12Bb) and moves it, the unlocking follower (12) suddenly moves the lock mechanism (10). To open. As a result, the lock mechanism (10) is rapidly switched from the unlock position (21a) to the lock position (21b), so that the switching movement of the lock mechanism (10) to the lock position (21b) is a switching error. It is done accurately without waking up.

  That is, as a specific example, as shown in FIGS. 3, 6, and 11, when the unlocking follower (12B) suddenly opens the drive stop operating means (21) of the lock mechanism (10) as described above, The drive stop operation means (21) is rapidly switched from the unlock position (21a) to the lock position (21b).

  Due to this rapid switching, the drive stop operating means (21) is quickly engaged with the rotating drive stop section (20). There is no risk of it happening.

  As a result, the drive stop operating means (21) receives the drive stop portion (20) with respect to the normal measurement start timing of the measuring ratchet wheel (15) of the elastic body winding number measuring means (11), and the output wheel The time when (5) starts to prevent rotation coincides accurately without delay.

  For this reason, at the time when the measuring ratchet (15) measures the target number of windings, the power storage elastic body (4) does not reach the target number of windings accurately and the power storage amount is insufficient. This makes it possible to eliminate engine start errors due to the shortage of the accumulated power.

  [B. While the unlocking main moving tool (12A) runs idle for the delay distance (L1), the engaging part (16) (dog claw (84)) and the engaged part of the output side one-way rotational transmission means (6) (17) The engagement portion (16) and the engaged portion (17) are stored in the power storage elastic body (4) so that the (claw receiving portion (84)) comes into sufficient contact with the engagement portion (16). There is no collision at the time of power output, eliminating the occurrence of collision noise, deformation and damage. ]

  In general, as the specific configuration of the output-side unidirectional rotation transmission means (6), a wide variety of configurations have been made publicly known from mechanical kinematics books and patent documents. There is a type that takes a little longer time for connection operation from the shut-off state to the rotational connection state.

  In this case, the winding number measuring means (11) locks the lock mechanism (10) in spite of the connection operation taking a long time of the output side one-way rotation transmission means (6). As a result, the output wheel (5) is prevented from rotating.

  Then, the engaging portion (16) and the engaged portion (17) of the output-side unidirectional rotation transmission means (6) are left in a state of being separated from each other, so that the power storage elastic body (4) There is still a problem that a collision occurs when the accumulated power of the engine is output and a collision sound is generated or deformation or breakage occurs due to impact force.

  As a specific example of this problem, as described in detail in the paragraph numbers [0024]-[0027], [Problem B. When the accumulated power of the power storage elastic body (4) is output, the dog claw (82) and the claw receiving portion (84) may collide and be deformed or damaged. ].

The invention of claim 1 can solve this [problem b). The reason is as follows.
Next, a case where the structure shown in FIGS. 14 to 16 is adopted as a specific example of the output-side unidirectional rotation transmission means (6) of a kind that takes a little longer time for connection operation will be described.

The invention of claim 1 has the following configuration.
When the starting rope (34) is pulled to start the engine, the elastic body winding number measuring means (11) advances from the initial position to the predetermined position in conjunction with the pulling operation of the starting rope (34). When the unlocking main drive (12A) runs idle for a predetermined delay distance (L1), it reaches the unlocking follower (12B), and the unlocking follower (12B) is moved to the unlock holding position (12Ba). ) To the lock release allowable position (12Bb), the lock mechanism (10) is released from the unlocking follower (12B) and switched from the unlock position (21a) to the lock position (21b). Thus, the rotation of the output wheel (5) is prevented.

  From this configuration, the time delay from the start to the end of standing of the dog claw (82) of the output side one-way rotation transmission means (6) is the delay distance (L1) of the unlocking main moving tool (12A). It is fully absorbed during the idle run. For this reason, after the dog claw (82) is sufficiently in contact with the claw receiving portion (84), the lock mechanism (10) starts to lock, the output wheel (5) is prevented from rotating, and the power is accumulated. Accumulation of power of the elastic body (4) begins.

  As a result, when the accumulated power of the power storage elastic body (4) is output, the dog claw (82) is in contact with the claw receiving portion (84), so there is no collision, and a collision sound is generated. In addition, the dog claw (82) (engaging part (16)) and claw receiving part (84) (engaged part (17)) can be prevented from being deformed or damaged by the impact force caused by a collision. It can be done.

O Invention of claim 2. See FIGS.
The invention of claim 2 is characterized in that, in the invention of claim 1, the following characteristic configuration is added.

  The measurement reset means (70) is configured to return the elastic body winding number measuring means (11) to the initial position based on the rewind rotation in which the recoil reel (1) rewinds the starting rope (34). It is characterized by that.

The invention according to claim 2 has the following operations and effects from this characteristic configuration.
In the second aspect of the invention, when the starting rope (34) is rewound after the previous starting operation, the elastic body winding number measuring means (11) is returned to the initial position. Moreover, when the elastic body winding number measuring means (11) is in the initial position, the lock mechanism (10) is released and the output wheel (5) is allowed to rotate.

  For this reason, when the starting rope (34) is pulled to start the engine, this pulling force is applied to the recoil reel (1), the input side unidirectional rotation transmission means (2), the input wheel (3), and the elastic body for power storage. It is transmitted to the output wheel (5) via (4) and rotates the output wheel (5) and rotates the engaged portion (17) provided on the output wheel (5) side.

  As a result, even if the engaging portion (16) and the engaged portion (17) are not engaged at first, the engaged portion (17) is rotated by pulling the starting rope (34). It is possible to engage with the engaging portion (16). When the elastic body winding number measuring means (11) reaches a predetermined position in conjunction with the pulling operation of the starting rope (34), the lock mechanism (10) is activated and the output wheel (5) is locked. Thereafter, the elastic body for power storage (4) is wound up by the amount of rotation of the input wheel (3).

  Further, in the invention of claim 2, the elastic coil winding number measuring means (11) is based on the rewinding rotation in which the recoil reel (1) rewinds the starting rope (34) by the measurement resetting means (70). Since it is returned to the initial position, the elastic body winding number measuring means (11) is returned to the initial position when the starting rope (34) is rewound after the previous starting operation.

  For this reason, counting of the number of windings of the power storage elastic body (4) can be started from zero, and it is guaranteed that the accumulated force corresponding to the target number of windings is stored in the power storage elastic body (4). The In other words, it is possible to prevent a situation in which the accumulating force corresponding to the number of windings of the elastic body for power storage (4) has reached the target number of windings, but no corresponding power is actually stored. As a result, it is possible to prevent engine start failure due to insufficient power storage.

The invention of claim 3. See FIGS.
The invention of claim 3 is characterized in that, in the invention of claim 2, the following characteristic configuration is added.

The invention of claim 2 is preferably constructed as in the invention of claim 3 described below.
That is, as described in claim 3, the lock mechanism (10) includes a drive stop portion (20) provided on the output wheel (5), and a drive stop that is freely engageable with the drive stop portion (20). And operating means (21).

The drive stop operation means (21) is configured to be switchable between a lock position (21b) and a lock release position (21a), and when the drive stop operation means (21) is in the lock position (21b), the drive stop While engaging the part (20) to prevent the output wheel (5) from rotating,
When the drive stop operating means (21) is in the unlocking position (21a), the drive stop portion (20) is released to allow the output wheel (5) to rotate.

  The elastic body winding number measuring means (11) includes a feed claw (14) provided on the input wheel (3), a measuring claw wheel (15) chopped by the feed claw (14), and this measurement. A ratchet mechanism (49) for leaving the claw wheel (15) at each counting position.

  The measurement reset means (70) includes a reset main drive portion (72) provided on the recoil reel (1), a reset follower portion (73) provided on the ratchet mechanism (49), and the measurement claws. Initial position biasing means (71) for biasing the vehicle (15) to the initial position.

  The reset main drive portion (72) drives the reset follower portion (73) during the rewind rotation of the recoil reel (1) to rewind the starting rope (34), thereby moving the ratchet mechanism (49). Configure to cancel.

  The initial position biasing means (71) is configured to return the measuring ratchet wheel (15) to the initial position when the ratchet mechanism (49) is released.

  The drive stop operating means (21) is provided with a lock position biasing means (48), and the lock position biasing means (48) biases the drive stop operating means (21) to the lock position (21b). The drive stop operation means (21) is provided with a first passive part (22) and a second passive part (23).

  The unlocking main moving tool (12A) of the unlocking means (12) is configured to rotate integrally with the measuring ratchet wheel (15), so that the measuring ratchet wheel (15) is at a position corresponding to the target number of windings. When it is reached, the unlocking main moving tool (12A) of the unlocking means (12) drives the first passive part (22) to unlock the drive stop operating means (21) from the lock position (21b). It is configured to switch to the position (21a).

  In the state where the measuring ratchet wheel (15) returns to the initial position from the target number of times measurement end position, the unlocking follower (12B) of the unlocking means (12) receives the second passive part (23). Thus, the drive stop operation means (21) is configured to be held at the lock release position (21a).

The invention of claim 4. See FIGS.
The invention of claim 4 is characterized in that, in the invention of claim 3 described above, the following characteristic configuration is added.

That is, the ratchet mechanism (49) includes a first ratchet pawl (51) and a second ratchet pawl (52).
The reset follower (73) is provided on the first ratchet pawl (51), and the locking of the first ratchet pawl (51) is released based on the rewind rotation of the recoil reel (1). Configure as follows.

  The second ratchet pawl (52) is configured such that when the number of windings of the power storage elastic body (4) reaches the target number of windings, the drive stop operating means (21) is moved from the lock position (21b). The second ratchet pawl (52) is unlocked in conjunction with the switching to the unlocking position (21a).

According to the fourth aspect of the present invention, the following operations and effects can be obtained from this characteristic configuration.
In the third aspect of the present invention, when the operation of repeatedly pulling and returning the starting rope (34) is repeated, the count value of the elastic body winding number measuring means (11) every time the starting rope (34) is rewound. Will be reset. For this reason, it is necessary to configure so that the power storage elastic body (4) reaches the target number of windings by pulling the starting rope (34) at a time.

  Such a problem has been solved by the invention of claim 4. That is, in the invention of claim 4, since the second ratchet pawl (52) is provided to leave the measuring ratchet wheel (15) at each counting position, the first rope (34) is unwound when the starting rope (34) is rewound. Even if the latching of the one ratchet pawl (51) is released, the measuring ratchet wheel (15) is left in the counting position by the second ratchet pawl (52). The count value of the number of windings is added.

Therefore, since the engine start operation can be performed in a plurality of times, it is possible to deal with various usage patterns and improve the convenience for the user.

The invention of claim 5. See FIG. 3, FIG. 6, FIG. 10 to FIG.
The invention of claim 5 is characterized in that, in the invention of claim 1, 2, 3 or 4, the following characteristic configuration is added.

  The unlocking follower (12B) comprises an unlocking follower lever (12B). The unlocking driven lever (12B) is configured to be swingable by switching between the unlocking holding position (12Ba) and the lock closing permission position (12Bb) with a fulcrum shaft center (12D) as a fulcrum.

  This unlocking driven lever (12B) is pressed against the unlocking holding position (12Ba) by the unlocking holding spring (12E), whereas the unlocking main moving tool (12A) 12E) is configured so that it can be switched and moved to the lock insertion allowable position (12Bb).

The invention of claim 6. See FIGS. 10-13.
The invention of claim 6 is characterized in that, in the invention of claim 5, the following characteristic configuration is added.

  The unlocking main moving tool (12A) is provided with a lever driving part (12Aa) and a lever retracting inclination cam part (12Ab).

During the measurement movement in which the elastic body winding number measuring means (11) moves from the initial position toward the target winding number reaching position, the lever driving unit (12Aa) of the unlocking main moving tool (12A) The lock release follower lever (12B) is configured to be switched and moved from the lock release holding position (12Ba) to the lock closing allowable position (12Bb).

  Lever retracting operation of the unlocking main moving tool (12A) while the elastic body winding number measuring means (11) is returning from the target winding number reaching position to the initial position by the measurement reset means (70). The inclined cam part (12Ab) retracts the unlocking follower lever (12B) from the engagement position (12Bc) to the unlocking main driving tool (12A) to the disengaging retreating position (12Bd), and the unlocking main driving tool ( 12A) is configured to pass through the unlocking driven lever (12B).

[Effect of the invention of claim 6]
The invention of claim 6 has the following effects.
[C. While the elastic body winding number measuring means (11) is moving back to the initial position, the tilting cam part for lever retraction operation (12Ab) automatically moves the lock release lever (12B) to the disengagement retraction position (12Bd). Since it is evacuated, the structure and operation for evacuation can be performed easily and accurately. ]

The invention of claim 7. See FIGS. 10-13.
The invention of claim 7 is characterized in that in the invention of claim 6 above, the following characteristic configuration is added.

  The unlocking driven lever (12B) is configured to switch and swing between the unlocking holding position (12Ba) and the lock closing allowable position (12Bb) with the fulcrum axis (12D) as a fulcrum. Thus, it is configured to be swingable by switching between the engagement position (12Bc) and the engagement release position (12Bd) along a direction intersecting the swing direction.

  The unlocking follower lever (12B) is the unlocking holding spring (12E), and elastically presses against the unlocking holding position (12Ba), and at the engaging action position (12Bc) with respect to the unlocking main moving tool (12A). Also configured to repress.

  The unlocking driven lever (12B) is moved from the engaging position (12Bc) to the disengagement retracted position against the unlocking holding spring (12E) by the lever retracting operation inclined cam portion (12Ab). (12Bd) is configured to be retracted and moved.

[Effect of the invention of claim 7]
The invention of claim 7 has the following effects.
[D. A single unlocking holding spring (12D) performs the two functions of pressing the unlocking lever (12B) to the unlocking holding position (12Ba) and pressing the engaging lever (12Bc). Therefore, the structure for that can be simplified. ]

The invention of claim 8. See FIG.
The invention of claim 8 is characterized in that in the invention of any one of claims 3 to 7, the following characteristic configuration is added.

  A plurality of the drive stop portions (20) are provided at predetermined intervals in the circumferential direction of the output wheel (5), and each drive stop portion (20) is configured as a recess, and a blocking member that can be attached to and removed from the recess. (26) is provided.

According to the eighth aspect of the invention, the following operations and effects can be obtained from this characteristic configuration.
In the invention according to any one of claims 3 to 7, the starting rope for engaging the engaging portion (16) and the engaged portion (17) of the output side one-way rotational transmission means (6). Even if (34) is pulled, the drive stop operating means (21) and the drive stop portion (20) are engaged before the output wheel (5) is sufficiently rotated (that is, the engagement portion (16)). And the drive stop operating means (21) and the drive stop portion (20) are engaged before the engaged portion (17) is engaged, and the output wheel (5) may be locked. .

  However, according to the invention of the eighth aspect, the engaging portion of the output-side unidirectional rotational transmission means (6) can be obtained by appropriately closing some of the plurality of concave portions with the closing member (26). The drive stop operation means (21) can be prevented from engaging with the drive stop section (20) before the engagement between the (16) and the engaged part (17), and the drive stop operation means (21 ) Can ensure sufficient rotation of the output wheel (5) until it engages with the drive stop (20).

  For this reason, the engaging part (16) and the engaged part (17) of the output side one-way rotation transmission means (6) can be reliably engaged. Further, since the above object can be achieved by a simple operation of attaching or removing the closing member (26), such adjustment can be performed after the recoil starter is assembled, which contributes to improvement in production efficiency.

The invention of claim 9. See FIG. 1 and FIG.
The invention of claim 9 is characterized in that, in the invention of any one of claims 3 to 8, the following characteristic configuration is added.

  The output side one-way rotation transmission means (6) is configured as a centrifugal clutch mechanism. The centrifugal clutch mechanism includes a centrifugal claw (44) provided on the start shaft (7) side, and a claw receiving portion (45) provided on the output wheel (5) side. 44) is configured such that when the rotation of the starting shaft (7) reaches or exceeds a predetermined rotational speed, the engagement with the claw receiving portion (45) is released by rocking by centrifugal force. And

The invention of claim 10. See FIGS. 14-16.
14 to 16 show a second embodiment of the recoil starter of the present invention. FIG. 14 corresponds to FIG. FIG. 15 is a view of the output side unidirectional rotation transmission means as seen from the engine side. FIG. 16 is a front sectional view of the output-side unidirectional rotation transmission means.

  The invention of claim 10 is characterized in that, in the invention of any one of claims 1 to 8, the following characteristic configuration is added.

  The output-side unidirectional rotation transmission means (6) includes a dog claw (82) provided on the output wheel (5) side, and a dog claw standup that raises the dog claw (82) when the output wheel (5) rotates. And a claw receiving portion (84) that is provided on the start shaft (7) side and engages with the dog claw (82) when the dog claw (82) stands up. It is characterized by that.

Embodiments of a recoil starter for an engine according to the present invention will be described below with reference to the drawings.
Embodiment 1 Invention of Claim 1-9. See FIGS.

1 to 13 show a first embodiment of a recoil starter according to the present invention.
FIG. 1 is a longitudinal front view of a recoil starter. 2A is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line BB in FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1 and shows a state where the spring winding number measuring means 11 is in the initial position.

  FIG. 4 is a view in which the drive stop operation means 21 is removed from FIG. FIG. 5 is a view in which the second ratchet pawl 52 is removed from FIG. FIG. 6 is a view showing a state in which the starting rope 34 is pulled from the state shown in FIG.

  7 is a cross-sectional view taken along line VII-VII in FIG. 3 or FIG. 8A is a front view of the input wheel 3, and FIG. 8B is a cross-sectional view taken along line BB in FIG. 8A. FIG. 9A is a view of the spring winding number measuring means 11 as viewed from the engine side (however, the drive stop operating means 21 and the first ratchet pawl 51 are omitted). FIG. 9B shows the main part of FIG. 9A and shows the movement of the feed claw 14.

  FIG. 10 shows the unlocking means 12. FIG. 10A is an enlarged view of a portion X in FIG. FIG. 10B is a cross-sectional view taken along the line BB in FIG. FIG. 10C is a cross-sectional view taken along the line CC of FIG. FIG. 11 is a drawing of the portion X in FIG. 3 and shows the action of the unlocking means 12. FIG. 11A shows a state where the unlocking follower 12B is in the unlocking holding position 12Ba. FIG. 11B shows a state in which the unlocking follower 12B has been switched to the lock closing allowable position 12Bb.

FIG. 12 is a view corresponding to FIG. 10C and shows the function of the lever driving portion 12Aa of the unlocking main moving tool 12A. FIG. 13 is a view corresponding to FIG. 12 and shows the function of the inclined cam portion 12Ab for lever retraction operation of the unlocking main moving tool 12A.
In the present specification, the right side is defined as the front side and the left side is defined as the rear side as viewed in FIG.

  In FIG. 1, reference numeral 7 is a crankshaft of a forced air-cooled four-cycle gasoline engine, and reference numeral 31 is a flywheel fan. A starter pulley 32 is provided at one end of the crankshaft 7. The starter pulley 32 is fixed to the crankshaft 7 and rotates integrally with the crankshaft 7.

  The recoil starter according to the first embodiment of the present invention has a starter case 33 provided on one end side of the crankshaft 7. The starter case 33 has a fixing portion 9 disposed coaxially with the crankshaft 7 therein.

  The recoil reel 1, the input wheel 3, and the output wheel 5 are externally fitted to the fixed portion 9 in order from the front in a freely rotatable manner. Among these, the starting rope 34 is wound around the recoil reel 1. A reel rewinding spiral spring 35 is provided between the recoil reel 1 and the starter case 33. When the starting rope 34 is pulled, the starting rope 34 is pulled by the restoring force of the reel rewinding spiral spring 35. It is configured to be rewound onto the recoil reel 1.

  In this specification, as shown in FIG. 2, the direction X in which the recoil reel 1 rotates by pulling the start rope 34 is defined as the normal rotation direction of the recoil reel 1, and the normal rotation of the recoil reel 1 is transmitted. The direction X (see FIG. 3) in which the input wheel 3 and further the output wheel 5 rotate is set as the normal rotation direction of the input wheel 3 or the output wheel 5, respectively.

  Between the recoil reel 1 and the input wheel 3, as shown in FIG. 2, the input-side unidirectional rotational transmission means 2 is interposed. The input side unidirectional rotation transmission means 2 includes a claw 38 swingably provided on the rear end surface (end surface on the input wheel 3 side) of the recoil reel 1 and the front end surface (end surface on the recoil reel 1 side) of the input wheel 3. ) And a butt edge 39 provided on the periphery.

  The pawl 38 is urged to swing outward by a spring (not shown), and when the starting rope 34 is pulled, the pawl 38 and the abutting edge 39 abut against each other, and the rotation of the recoil reel 1 is transmitted to the input wheel 3. However, when the starting rope 34 is rewound, the abutment between the claw 38 and the abutting edge 39 is released, so that the rotation of the recoil reel 1 is not transmitted to the input wheel 3.

  As shown in FIG. 2, the input wheel 3 is prevented from being reversely rotated by intermittent engagement type reverse rotation preventing means 8. The intermittent engagement type reverse rotation preventing means 8 includes a check claw wheel 24 provided on the fixed portion 9 side and a check claw 25 provided on the input wheel 3 side. The check ratchet wheel 24 is externally fitted to the fixed portion 9 so as not to rotate, and four check engagement portions 41 are extended outward from the central portion thereof. The non-return engaging portions 41 are arranged in a cross shape with an interval of approximately 90 degrees.

  As shown in FIG. 2 (B), each check engagement portion 41 has a substantially triangular cross section, and escapes the check claw 25 when the input wheel 3 rotates forward (that is, when it rotates in the X direction). And an engaging surface 41b that engages with the check pawl 25 when the input wheel 3 rotates reversely (that is, when rotating in the Y direction). The check ratchet wheel 24 is accommodated in a space between the rear end surface of the recoil reel 1 and the front end surface of the input wheel 3.

On the other hand, as shown in FIG. 1 and FIG. 2, the check pawl 25 is configured to be able to protrude and retract from the front end surface of the input wheel 3, and rotates together with the input wheel 3. In the present embodiment, two check claws 25 are provided. Each check claw 25 is arranged at a substantially point-symmetrical position with the rotation center of the input wheel 3 in between.

  As a result of such a configuration, when the input wheel 3 tries to rotate forward in the X direction, the check pawl 25 retreats into the input wheel 3 by the escape surface 41a. However, when the input wheel 3 tries to reversely rotate in the Y direction, it engages with the engagement surface 41b of the non-return engaging portion 41 while maintaining the protruding state, thereby preventing the reverse rotation of the input wheel 3. .

  However, the check engagement portions 41 are arranged at intervals of 90 degrees, and the check claws 25 are arranged at substantially symmetrical positions with respect to the rotation center of the input wheel 3. Therefore, the input wheel 3 can be reversed about 90 degrees at the maximum until the check pawl 25 is engaged with the engagement surface 41b.

  The power storage elastic body 4 of the first embodiment is configured as a spiral spring as shown in FIG. The power storage spiral spring 4 is accommodated in a space between the input wheel 3 and the output wheel 5, its outer end is fixed to the input wheel 3, and its inner end is fixed to the output wheel 5.

  Between the output wheel 5 and the crankshaft 7, output-side unidirectional rotation transmission means 6 is interposed. This output-side unidirectional rotation transmission means 6 transmits the rotation of the output wheel 5 to the crankshaft 7, and is configured as a centrifugal clutch mechanism as shown in FIGS. That is, a centrifugal claw 44 urged inward by a spring 43 is pivotally supported on a starter pulley 32 that rotates integrally with the crankshaft 7, while the rear end surface of the output wheel 5 is engaged with the centrifugal claw 44. A possible nail receiver 45 is provided.

  Until the rotational speed of the crankshaft 7 reaches a predetermined speed, the centrifugal claw 44 and the claw receiving portion 45 are in an engaged state, but when the rotation of the crankshaft 7 exceeds the predetermined speed, the centrifugal claw 44 Is swung outward by the centrifugal force generated by the rotation of the crankshaft 7, and the engagement between the centrifugal claw 44 and the claw receiving portion 45 is released. In the first embodiment, the centrifugal claw 44 functions as the engaging portion 16, and the claw receiving portion 45 functions as the engaged portion 17.

  As shown in FIG. 3, the recoil starter according to the present embodiment is provided with a lock mechanism 10 that prevents the output wheel 5 from rotating. The lock mechanism 10 includes a drive stop unit 20 provided on the output wheel 5, and a drive stop operation means 21 that is detachable from the drive stop unit 20. The drive stop portion 20 is configured as a recess provided on the rear end surface of the output wheel 5. The recesses are provided at equal intervals on the periphery of the rear end surface of the output wheel 5.

  As shown in FIGS. 3 to 5, in the present embodiment, four such recesses are provided. Of these, two recesses that are point-symmetric with respect to the rotation center of the output wheel 5 are attached to the recesses. / A detachable closing member 26 is screwed to close the recess. For this reason, it is two places which are not obstruct | occluded by this obstruction | occlusion member 26 that functions as the drive stop part 20. FIG.

  The recess functioning as the drive stop unit 20 is also in a point-symmetrical position with respect to the rotation center of the output wheel 5. Therefore, in order for the drive stop operation means 21 to engage the drive stop unit 20, the output wheel 5 must be It is necessary to rotate about 180 degrees (about half rotation) at maximum.

  On the other hand, the drive stop operating means 21 is pivotally supported by a first pivot shaft 47 fixed to the starter case 33. The drive stop operation means 21 is configured to be switchable between a lock position 21b and a lock release position 21a. When the drive stop operating means 21 is at the lock position 21b, it engages with the drive stop portion 20 to prevent the output wheel 5 from rotating. On the other hand, when the drive stop operating means 21 is at the unlock position 21a, the drive stop portion 20 is released to freely rotate the output wheel 5. The first pivot shaft 47 is installed in the starter case 33 in the front-rear direction.

  The drive stop operating means 21 is biased in the direction of the lock position 21b by the lock position biasing means 48. The lock position urging means 48 in this embodiment is constituted by a tension spring. One end of the tension spring 48 is locked to the starter case 33 side, and the other end is locked to the drive stop operating means 21.

  As shown in FIG. 3, the drive stop operation means 21 includes an arm portion 21e. The arm portion 21e extends toward a second pivot shaft 57, which will be described later, and is suspended on the second pivot shaft 57 when the drive stop operation means 21 is switched to the lock position 21b. It has become. The arm portion 21e is suspended from the second pivot shaft 57, thereby restricting the swinging of the drive stop operation means 21 beyond a certain level in the direction of the lock position 21b.

  The drive stop operation means 21 is provided with a first passive part 22 and a second passive part 23. Among these, the first passive part 22 is suspended from the middle part of the arm part 21e of the drive stop operation means 21 downward. On the other hand, the second passive portion 23 is provided at the distal end portion of the drive stop operation means 21. The drive stop operation means 21 comes into contact with the unlocking tool 12C at the end of measurement of the unlocking means 12 described later in the first passive portion 22 or the second passive portion 23, and receives the drive. .

  As shown in FIGS. 1 to 5, the recoil starter includes spring winding number measuring means 11 that measures the number of windings of the power storage spiral spring 4. This spring winding number measuring means 11 leaves a feed claw 14 provided on the input wheel 3, a measurement claw wheel 15 cut by the feed claw 14, and the measurement claw wheel 15 at each counting position. And a ratchet mechanism 49. Further, the ratchet mechanism 49 includes a remaining claw wheel 50 that rotates integrally with the measurement claw wheel 15, and a first ratchet claw 51 and a second ratchet claw 52 that are engaged with the remaining claw wheel 50. .

  Among these, the feed claw 14 provided in the input wheel 3 is configured as follows. That is, as shown in FIGS. 8 and 9, the feed claw 14 is accommodated in a recess provided on the outer peripheral surface of the input ring 3, is pivotally supported in a undulating manner, and is input by the torsion spring 55. It is urged toward the outside in the radial direction. When the input wheel 3 rotates in the direction X in which the power-accumulating spiral spring 4 stores power (that is, when the input wheel 3 is rotating forward), the feed claw 14 stands up and a measurement claw wheel described later. When the input wheel 3 rotates in the opposite direction Y, while the feed wheel 15 is fed in increments of 15, the feed claw 14 is configured to fall on contact with the measuring claw wheel 15.

  The measurement claw wheel 15 and the remaining claw wheel 50 are rotatably supported by a second pivot shaft 57 fixed to the starter case 33, and are configured to rotate integrally. The second pivot shaft 57 is installed in the starter case 33 in the front-rear direction, and is substantially parallel to the first pivot shaft 47.

  In this embodiment, as shown in FIG. 2, since the two feed claws 14 are provided on the outer peripheral surface of the input wheel 3, the measuring wheel 15 is fed in increments of two claws by one rotation of the input wheel 3. Is done.

The unlocking means 12 is configured as shown in FIGS. 3 to 7 and 10 to 13.
That is, the unlocking means 12 includes an unlocking main moving tool 12A, an unlocking follower 12B, and a lock releasing tool 12C at the end of measurement. The unlocking main moving tool 12A and the measurement end time unlocking tool 12C are fixed to the measuring ratchet 15 constituting the elastic body winding number measuring means 11.

  The unlocking follower 12B includes an unlocking holding position 12Ba for holding the locking mechanism 10 at the unlocking position 21a, and an unlocking allowable position for allowing the locking mechanism 10 to be moved from the unlocking position 21a to the locking position 21b. It can be switched to 12Bb.

In conjunction with the pulling operation of the starting rope 34, when the elastic body winding number measuring means 11 advances from the initial position to the predetermined position, the unlocking main moving tool 12A runs idle for the predetermined delay distance L1. When the unlocking follower 12B is reached and the unlocking follower 12B is switched and moved from the unlocking holding position 12Ba to the unlocking allowable position 12Bb, the lock mechanism 10 is released from the unlocking follower 12B and locked. The output wheel 5 is prevented from rotating by switching and moving from the release position 21a to the lock position 21b.

  The lock release tool 12C at the end of the measurement moves the lock mechanism 10 from the lock position 21b to the lock release position 21a in conjunction with the elastic body winding number measuring means 11 having finished measuring the target winding number. By performing the switching operation, the lock mechanism 10 is unlocked to output the accumulated power of the power accumulating elastic body 4, and the engine is started via the output wheel 5 and the output side one-way rotational transmission means 6 in order. The shaft 7 was configured to start and rotate.

  As shown in FIGS. 10 and 11, the unlocking follower 12B includes an unlocking follower lever 12B. The unlocking driven lever 12B is configured to be swingable by switching between the unlocking holding position 12Ba and the lock closing permission position 12Bb with a fulcrum shaft center 12D as a fulcrum.

  This unlocking driven lever 12B is pressed against the unlocking holding position 12Ba by the unlocking holding spring 12E, whereas the unlocking main moving tool 12A is against the unlocking holding spring 12E against the unlocking allowable position. It was configured to be switched to 12Bb. The lock release holding spring 12E is a torque spring that also serves as a compression coil spring.

  As shown in FIGS. 10 to 13, the unlocking main moving tool 12A is provided with a lever driving portion 12Aa and a tilting cam portion 12Ab for lever retracting operation. During the measurement movement in which the elastic body winding number measuring means 11 moves forward from the initial position toward the target winding number reaching position, the lever driving unit 12Aa of the unlocking main moving tool 12A moves the unlocking driven lever 12B. The lock release holding position 12Ba is configured to be switched and moved from the lock release allowable position 12Bb.

  As shown in FIG. 13, while the elastic body winding number measuring means 11 is returning from the target winding number reaching position to the initial position by the measurement reset means 70, the lever of the unlocking main moving tool 12A is retracted. The inclined cam part 12Ab for operation retreats the unlocking driven lever 12B from the engagement operating position 12Bc to the unlocking main driving tool 12A from the engaging release position 12Bd, and the unlocking main driving tool 12A avoids the unlocking driven lever 12B. Configured to pass through.

  As shown in FIG. 10 to FIG. 13, the unlocking driven lever 12B switches and swings between the unlocking holding position 12Ba and the lock closing allowable position 12Bb with the fulcrum shaft center 12D as a fulcrum. On the other hand, along the direction intersecting with this swinging direction, it is configured to be swingable by switching between the engagement action position 12Bc and the engagement release retracted position 12Bd.

This unlocking driven lever 12B is an unlocking holding spring 12E made of the compression coil spring / torque spring and elastically presses against the unlocking holding position 12Ba, and also at the engaging action position 12Bc with respect to the unlocking main moving tool 12A. Configure to repress.
The unlocking driven lever 12B is retracted from the engaging position 12Bc to the disengaging position 12Bd against the unlocking holding spring 12E by the lever retracting operation inclined cam portion 12Ab. Configured.

  As shown in FIGS. 3 to 5, the first ratchet pawl 51 and the second ratchet pawl 52 are pivotally supported by the first pivot shaft 47, and the first ratchet pawl 51. The second ratchet pawl 52 and the drive stop operating means 21 are arranged in this order. Among these, the first ratchet pawl 51 is biased by the tension spring 61 in a direction to be locked to the remaining pawl wheel 50. One end of the tension spring 61 is locked to the first ratchet pawl 51, and the other end is locked to the starter case 33 side.

  On the other hand, the second ratchet pawl 52 is urged by a tension spring 62 in a direction to be engaged with the remaining pawl wheel 50. One end of the tension spring 62 is locked to the second ratchet pawl 52, and the other end is locked to the drive stop operation means 21 (see FIGS. 3 and 4). The second ratchet pawl 52 is also provided with an input portion 52a. The input portion 52a is engaged with the notch portion 21c provided in the drive stop operation means 21 to swing the drive stop operation means 21. The movement is transmitted to the second ratchet pawl 52.

  That is, the lock release tool 12C at the end of the measurement of the lock release means 12 abuts against the first passive portion 22 of the drive stop operation means 21 and pushes it to move the drive stop operation means 21 from the lock position 21b. When switching to the unlocking position 21a, the swing of the drive stop operating means 21 is transmitted to the second ratchet pawl 52 through the engagement between the notch portion 21g and the input portion 52a, and the second ratchet The latching between the second ratchet claw 52 and the remaining claw wheel 50 is released by swinging the claw 52 upright.

  Further, when the drive stop operation means 21 is in the unlock position 21a, the second ratchet pawl 52 is also locked to the remaining pawl wheel 50 through the engagement between the input portion 52a and the notch portion 21g. Maintain the unlocking posture to release. On the other hand, when the drive stop operation means 21 is switched from the unlocking position 21a to the locking position 21b, the second ratchet pawl 52 is also linked to the remaining pawl wheel 50 via the input portion 52a. It has become.

  In the recoil starter of this embodiment, the number of windings of the power storage elastic body 4 measured by the elastic body winding number measuring means 11 based on the rotation of the recoil reel 1 in the direction of rewinding the starting rope 34 is set. A measurement reset means 70 for resetting the count value is provided. The measurement resetting means 70 includes an initial position urging means 71 for urging the measuring claw wheel 15 to an initial position, a reset main driving portion 72 provided on the recoil reel 1, and the first ratchet claw 51. And a reset follower 73 provided.

  Among these, the initial position biasing means 71 is configured as a first torsion spring wound around the second pivot shaft 57, as shown in FIGS. One end is fixed to the starter case 33 side, and the other end is fixed to the measuring claw wheel 15. The initial position biasing means 71 moves the measuring ratchet wheel 15 to the initial position when both the first ratchet pawl 51 and the second ratchet pawl 52 are unlocked from the remaining pawl wheel 50. To rotate back.

  As shown in FIGS. 3 to 5, the bracket 76 provided on the starter case 33 restricts the rotational return of the measuring wheel 15 by the initial position biasing means 71 beyond a certain level. The position where the bracket 76 and the measurement claw wheel 15 abut is determined as the initial position of the measurement claw wheel 15 (see FIGS. 3 to 5).

  The reset main driving portion 72 is configured as a convex portion that protrudes from the periphery of the rear end surface of the recoil reel 1 at equal intervals. On the other hand, the reset follower 73 is configured as the other end portion of the second torsion spring 78 whose one end is locked to the first ratchet pawl 51, and the other end portion is an open end. The second torsion spring 78 is wound around the first pivot shaft 47 and extends downward at its release end, which functions as a reset follower 73, for resetting when the recoil reel 1 is rotated. It abuts on the main moving part 72 and receives its drive. As a result, the rotation of the recoil reel 1 is transmitted to the first ratchet pawl 51 through the contact between the reset driving unit 72 and the reset driven unit 73.

  However, at the time of forward rotation X of the recoil reel 1, even if the reset main driving portion 72 comes into contact with and drives the reset driven portion 73, this driving force is transmitted via the second torsion spring 78 to the first. The ratchet pawl 51 acts in a direction to lock the remaining ratchet wheel 50, so that the first ratchet pawl 51 and the remaining hook wheel 50 are kept locked. However, when the recoil reel 1 is rotated in the reverse direction Y (when the recoil reel 1 rewinds and rotates to rewind the starting rope 34), the reset main driving portion 72 drives the reset driven portion 73, thereby the first ratchet pawl 51. The first ratchet pawl 51 and the remaining pawl wheel 50 are unlocked.

[Operation of the first embodiment]
The recoil starter according to the first embodiment of the present invention operates as follows.
Now, assume that the engine is stopped and the engine is to be started (see FIGS. 3 to 5). It is assumed that the starting rope 34 is wound around the recoil reel 1 and the measuring ratchet wheel 15 is in the initial position. The first ratchet pawl 51 is locked to the remaining pawl wheel 50 by the urging force of the tension spring 61.

  At this time, as shown in FIG. 3, the drive stop operating means 21 receives the second passive portion 23 by the unlocking follower 12B of the unlocking means 12, and is pushed and held at the unlocking position 21a. Has been. Therefore, the lock of the output wheel 5 is in a released state, and no power is stored in the power storage spiral spring 4. Further, the second ratchet pawl 52 is in a posture of releasing the engagement with the remaining pawl wheel 50 through the engagement between the notch portion 21g and the input portion 52a.

  Here, it is assumed that the centrifugal claw 44 of the output-side unidirectional rotation transmission means 6 is not engaged with the claw receiving portion 45. In this case, when the starting rope 34 is pulled, the recoil reel 1 rotates in the forward rotation direction X, and the rotation of the recoil reel 1 causes the input side one-way rotation transmission means 2, the input wheel 3, and the power storage spiral spring 4 to rotate. And transmitted to the output wheel 5 to rotate the output wheel 5. As a result, the claw receiving portion 45 provided on the output wheel 5 also rotates, and the centrifugal claw 44 and the claw receiving portion 45 can be engaged.

  In the present embodiment, as described above, in order for the drive stop operation means 21 to engage with the drive stop portion 20, the measurement pawl wheel 15 must be fed by one nail, so the drive stop operation means 21 Until the drive stop 20 is engaged, the rotation of the output wheel 5 corresponding to the half rotation of the input wheel 3 can be secured. Thereby, it is possible to prevent the output wheel 5 from being locked due to the engagement of the drive stop operating means 21 and the drive stop portion 20 before the centrifugal claw 44 and the claw receiving portion 45 are engaged. And the claw receiving portion 45 can be engaged in advance.

  When the centrifugal claw 44 and the claw receiving portion 45 are engaged with each other in this way, the measuring claw wheel 15 is fed in increments of one or two claws. In conjunction with this, as shown in FIGS. 11 and 12, the lever driving portion 12Aa of the unlocking main moving tool 12A switches the unlocking driven lever 12B from the unlocking holding position 12Ba to the lock allowing allowable position 12Bb. Then, the second passive portion 23 is detached from the unlocking driven lever 12B, and the drive stop operating means 21 is switched from the unlocking position 21a to the locking position 21b by the force of the locking position biasing means 48. (See FIGS. 11B and 6).

As a result, the power storage spiral spring 4 is in a state where it can store power, and the power storage spiral spring 4 is wound up by the amount of rotation of the input wheel 3 by the subsequent pulling operation of the starting rope 34.
When the measuring claw wheel 15 is fed by one or two claws and the drive stop operation means 21 is switched to the lock position (21b), the second ratchet claw 52 is linked to this. Lock to the remaining claw wheel 50 (see FIG. 6).

  Such rotation of the input wheel 3 is transmitted to the measurement claw wheel 15 by the feed claw 14 and further feeds the measurement claw wheel 15 in increments. When the number of windings of the power storage spiral spring 4 reaches the target number of windings, the unlocking tool 12C at the end of the measurement of the unlocking means 12 pushes the first passive portion 22 of the drive stop operating means 21. Then, the drive stop operation means 21 is switched from the lock position 21b to the lock release position 21a. As a result, the lock of the output wheel 5 is released, the stored force stored in the spiral spring 4 for storing power is released, and the output wheel 5 rotates.

  The rotation of the output wheel 5 is transmitted to the crankshaft 7 by the output-side unidirectional rotation transmission means 6. As described above, since the centrifugal pawl 44 and the pawl receiving portion 45 are already engaged, it is possible that both of them collide or generate unpleasant noise due to the release of the accumulated force of the spiral spring 4 for power accumulation. Absent. In this way, the rotation of the output wheel 5 is smoothly transmitted to the starter pulley 32 via the claw receiving portion 45 and the centrifugal claw 44 to rotate the crankshaft 7 and start the engine.

  As described above, in this embodiment, when the elastic body winding number measuring means 11 reaches a predetermined position in conjunction with the pulling operation of the starting rope 34 (only one claw or two claws are sent). In some cases, the lock mechanism 10 is actuated to lock the output wheel 5. For this reason, not only the unlocking of the output wheel 5 when the target number of windings of the power storage elastic body 4 has been reached, but also the locking is automatically performed, improving the convenience for the user.

  When the engine is started and the rotational speed of the crankshaft 7 exceeds a predetermined speed, the centrifugal claw 44 provided on the starter pulley 32 that rotates integrally with the crankshaft 7 swings outward by centrifugal force, and the claw receiving portion 45 Is disengaged. As a result, the connection between the crankshaft 7 and the output wheel 5 is broken.

  On the other hand, when the number of windings of the power storage spiral spring 4 reaches the target number of windings and the drive stop operating means 21 is switched from the locked position 21b to the unlocked position 21a, the second ratchet is interlocked with this. The claw 52 swings up and the second ratchet claw 52 and the remaining claw wheel 50 are unlocked.

  In the state where the rewinding of the starting rope 34 by the recoil reel 1 has not started, the unlocking tool 12C at the end of the measurement of the unlocking means 12 pushes up the drive stop operating means 21 via the first passive portion 22. The drive stop operation means 21 is held at the unlock position 21a, and the second ratchet pawl 52 continues to take the unlocked posture released from the remaining pawl wheel 50. become.

  Next, the rewinding operation of the starting rope 34 is started from this state. That is, the recoil reel 1 starts to rotate in the direction Y in which the starting rope 34 is rewound by the reel rewinding spiral spring 35. Due to the reverse rotation of the recoil reel 1, the reset main drive portion 72 drives the reset follower portion 73, and this driving force is transmitted to the first ratchet pawl 51 via the second torsion spring 78, thereby swinging it. The first ratchet pawl 51 and the remaining pawl wheel 50 are unlocked by being raised.

  As a result, the measuring wheel 15 is returned to the initial position by the biasing force of the initial position biasing means 71. In conjunction with this, the lock release tool 12C at the end of the measurement of the lock release means 12 also rotates and moves away from the first passive portion 22 of the drive stop operation means 21. As a result, the drive stop operating means 21 is pulled toward the lock position by the spring force (and its own weight) of the tension spring 48 that is the lock position urging means, but the second passive portion 23 is received by the lock follower lever 12B. The drive stop operating means 21 continues to be held at the unlock position (21a).

As shown in FIGS. 3, 4, and 7, a third torsion spring 80 is wound around the second pivot shaft 57. One end of the third torsion spring 80 is engaged with the remaining claw wheel 50 and the other end is a release end. The measurement claw wheel 15 is driven by the forward rotation of the input wheel 3 at the release end. Then, it rises every time it is cut and comes into contact with the drive stop operation means 21 from below. When the measuring ratchet 15 is in a position corresponding to the target number of windings, the drive stop operating means 21 is supported from below.
In FIG. 6, the third torsion spring 80 is omitted in order to avoid overcomplicating the drawing.

Embodiment 2 Invention of Claim 10. See FIGS. 14-16.
Next, 2nd Embodiment of this invention is described based on FIGS. 14-16.
14 to 16 show a second embodiment of the recoil starter of the present invention. FIG. 14 corresponds to FIG. FIG. 15 is a view of the output side unidirectional rotation transmission means as seen from the engine side. FIG. 16 is a front sectional view of the output-side unidirectional rotation transmission means.
In addition, the same code | symbol is attached | subjected to the member and element same as 1st Embodiment. Further, in the description of the second embodiment, portions not particularly mentioned are configured in the same manner as in the first embodiment.

  The recoil starter of the engine according to the second embodiment is different from the first embodiment only in the configuration of the output-side unidirectional rotational transmission means 6, as shown in FIGS.

  That is, the output-side unidirectional rotation transmission means 6 of the second embodiment includes a dog claw 82 provided on the output wheel 5 side, and a dog claw stand 83 for raising the dog claw 82 when the output wheel 5 rotates. And a claw receiving portion 84 which is provided on the crankshaft 7 side and engages with the dog claw 82 when the dog claw 82 stands up.

  The dog claw 82 is pivotally supported on the rear end face of the output wheel 5 so as to be swingable. A dog claw holding portion 85 projects from the rear end surface of the output wheel 5. The dog claw holding portion 85 regulates the swing of the dog claw 82 within a certain range, and from the output wheel 5 to the crankshaft 7. The load applied to the dog claw 82 when the rotation is transmitted to is received.

  The dog claw stand 83 is loosely fitted to a bolt 86 screwed to the rear end portion of the fixed portion 9 and is frictionally contacted with the head of the bolt 86 by a spring 87. The dog claw standing tool 83 is provided with a standing guide portion 83a, and when the output wheel 5 rotates, the dog claw 82 is pushed up by the standing guide portion 83a and stands up.

  The claw receiving portion 84 is formed by cutting and raising the inner peripheral surface of the starter pulley 32. When the dog claw 82 is raised by the dog claw stand 83, the dog claw receiving portion 84 is engaged with the output claw. Is transmitted to the crankshaft 7. In the second embodiment, the dog claw 82 functions as the engaged portion 17, and the claw receiving portion 84 functions as the engaging portion 16.

  Also in the output-side unidirectional rotation transmission means 6 configured as described above, the dog claw 82 is lying down until the output wheel 5 starts to rotate. Therefore, the output-side unidirectional rotation transmission means 6 is used as a conventional recoil starter 6. When used in the above, the output wheel 5 may suddenly rotate due to the release of the accumulated force of the power-accumulating spiral spring 4, and the dog claw 82 and the claw receiving portion 84 may collide with each other.

However, as described below, when configured as in the second embodiment, such a problem can be solved.
Now, assume that the starting rope 34 is pulled to start the engine. The recoil reel 1 is rotated by the pulling operation of the starting rope 34, and the rotation of the recoil reel 1 is transmitted to the output wheel 5 through the input side one-way rotation transmission means 2, the input wheel 3, and the power storage spiral spring 4. The output wheel 5 is rotated.

  When the output wheel 5 rotates in this manner, the dog claw 82 is raised by the dog claw stand 83 and rotates together with the output wheel 5. Accordingly, the dog claw 82 can be engaged with the claw receiving portion 84 on the crankshaft 7 side in advance before the output wheel 5 is unlocked, and the dog claw 82 by releasing the accumulated force of the vortex spring 4 for power storage It is possible to eliminate the collision with the claw receiving portion 84.

  When the engine is started and the rotational speed of the crankshaft 7 is increased, the claw receiving portion 84 comes into contact with the back surface of the dog claw 82, whereby the dog claw 82 is laid down, and the output wheel 5 and the crankshaft 7 are The connection will be broken.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by said each embodiment, It can change suitably within the range of the summary of invention, and can implement. For example, the reverse rotation preventing means 8 of the input wheel 3 is not limited to the above, and may be configured using a ratchet mechanism, a one-way clutch, or the like having another configuration. In each of the above embodiments, the case where the power storage elastic body 4 is a spiral spring has been described. However, any elastic body capable of storing power may be used, and for example, a torsion spring may be used.

  In each of the above embodiments, the feed claw 14 is configured to be freely raised and lowered, but may be fixed to the input wheel 3 instead of being a movable member. The measurement reset means 70 in each of the above embodiments is configured to return the elastic body winding number measuring means 11 to the initial position based on the rewind rotation in which the recoil reel 1 rewinds the starting rope 34. It is not limited to such a configuration.

  In each of the above embodiments, the output wheel 5 is provided with four recesses. However, the number of the recesses is not limited to four, and the locations to be closed by the closing member 26 and the number thereof are also limited to those in the embodiment. is not. In each of the above embodiments, the output wheel 5 is configured to be locked when the measuring claw wheel 15 is fed by one or two claws from the initial position. However, the present invention is not limited to this. is not.

  In each of the above embodiments, the unlocking main moving tool 12A of the unlocking means 12 and the unlocking tool 12C at the end of measurement are formed separately as two parts, but may be integrally formed into one part. Conceivable.

  The ratchet mechanism 49 in each of the above embodiments includes the first ratchet pawl 51 and the second ratchet pawl 52, but may include only the first ratchet pawl 51.

  The recoil starter of the engine of the present invention is suitable for a recoil starter of an engine for small agriculture, general purpose, or power generation, for example.

1 to 13 show a first embodiment of a recoil starter according to the present invention. FIG. 1 is a longitudinal front view of a recoil starter. 2A is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line BB in FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1 and shows a state where the spring winding number measuring means 11 is in the initial position.

FIG. 4 is a diagram in which drive stop operation means 21 is removed from FIG. 3. FIG. 5 is a view in which the second ratchet pawl 52 is removed from FIG. 4. It is a figure which shows the state which pulled the starting rope 34 from the state of FIG. 3, and fed the measuring claw wheel 15 for every nail | claw.

FIG. 11 is a sectional view taken along line VII-VII in FIG. 3 or FIG. 10. 8A is a front view of the input wheel 3, and FIG. 8B is a cross-sectional view taken along line BB in FIG. 8A. FIG. 9A is a view of the spring winding number measuring means 11 as viewed from the engine side (however, the drive stop operating means 21 and the first ratchet pawl 51 are omitted). FIG. 9B shows the main part of FIG. 9A and shows the movement of the feed claw 14.

FIG. 10 shows the unlocking means 12. FIG. 10A is an enlarged view of a portion X in FIG. FIG. 10B is a cross-sectional view taken along the line BB in FIG. FIG. 10C is a cross-sectional view taken along the line CC of FIG. FIG. 11 is a drawing of the portion X in FIG. 3 and shows the action of the unlocking means 12. FIG. 11A shows a state where the unlocking follower 12B is in the unlocking holding position 12Ba. FIG. 11B shows a state in which the unlocking follower 12B has been switched to the lock closing allowable position 12Bb.

FIG. 12 is a view corresponding to FIG. 10C and shows the function of the lever driving portion 12Aa of the unlocking main moving tool 12A. FIG. 13 is a view corresponding to FIG. 12 and shows the function of the inclined cam portion 12Ab for lever retraction operation of the unlocking main moving tool 12A.

14 to 16 show a second embodiment of the recoil starter of the present invention. FIG. 14 corresponds to FIG. It is the figure which looked at the output side one way rotation transmission means from the engine side. It is front view sectional drawing of an output side one way rotation transmission means.

17 to 22 show a configuration of a recoil starter of Patent Document 1 which is a conventional technique. FIG. 17 is a longitudinal front view of the recoil starter. 18A is a cross-sectional view taken along line XVIII-XVIII in FIG. 17, and FIG. 18B is a cross-sectional view taken along line BB in FIG. FIG. 18 is a cross-sectional view taken along line XIX-XIX in FIG. 17 and shows a state where the spring winding number measuring means 11 is in the initial position.

FIG. 20 is a diagram in which drive stop operation means 21 is removed from FIG. 19. FIG. 21 is a view of the second ratchet pawl 52 removed from FIG. 20. It is a figure which shows the state which pulled the starting rope 34 from the state of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Recoil reel, 2 ... Input side one way rotation transmission means, 3 ... Input wheel, 4 ... Power storage elastic body (spiral spring), 5 ... Output wheel, 6 ... Output side one direction rotation transmission means, 7 ... Start A shaft (crankshaft), 8 ... reverse rotation preventing means, 10 ... a lock mechanism, 11 ... elastic body winding number measuring means (spring winding number measuring means),

  DESCRIPTION OF SYMBOLS 12 ... Unlocking means, 12A ... Unlocking main drive, 12Aa ... Lever drive part, 12Ab ... Inclination cam part for lever retracting operation, 12B ... Unlocking follower (unlocking driven lever), 12Ba ... Unlocking holding position, 12Bb ... Lock-on permissible position, 12Bc ... Engagement action position, 12Bd ... Engagement release retracted position, 12C ... Lock release tool at the end of measurement, 12D ... Support shaft axis, 12E ... Lock release holding spring,

DESCRIPTION OF SYMBOLS 14 ... Feeding claw, 15 ... Measuring claw wheel, 16 ... Engagement part, 17 ... Engaged part, 20 ... Drive stop part, 21 ... Drive stop operation means, 21a ... Lock release position, 21b ... Lock position, 22 DESCRIPTION OF SYMBOLS 1st passive part, 23 ... 2nd passive part, 26 ... Closure member, 34 ... Starting rope, 44 ... Centrifugal claw, 45 ... Claw receiving part, 48 ... Lock position (21b) Biasing means (tensile spring) , 49 ... ratchet mechanism, 51 ... first ratchet pawl, 52 ... second ratchet pawl, 70 ... measurement resetting means, 71 ... initial position urging means (first torsion spring), 72 ... reset main drive part, 73 ... Reset follower, 82 ... Dog claw, 83 ... Dog claw stand, 84 ... Claw receiving part, L1 ... Delay distance.

Claims (10)

Wind the starting rope (34) around the recoil reel (1),
This recoil reel (1) has an input side unidirectional rotation transmission means (2), an input wheel (3), a power storage elastic body (4), an output wheel (5), and an output side unidirectional rotation transmission means (6). The engine start shaft (7) is interlocked and connected through
The output-side unidirectional rotation transmission means (6) includes an engaging portion (16) provided on the start shaft (7) side and an engaged portion (17) provided on the output wheel (5) side. And
Reverse rotation prevention means (8) for preventing reverse rotation of the input wheel (3);
A lock mechanism (10) for preventing rotation of the output wheel (5);
An elastic body winding number measuring means (11) for measuring the number of windings of the power storage elastic body (4);
Unlocking means (12) for releasing the locking mechanism (10) when the number of windings of the elastic body for power storage (4) reaches the target number of windings;
A measurement reset means (70) for returning the elastic body winding number measuring means (11) to the initial position is provided, and the elastic body winding number measuring means (11) is returned to the initial position by the measurement reset means (70). In the state, the lock release means (12) is configured to release the lock mechanism (10),
When the elastic body winding number measuring means (11) reaches a predetermined position in conjunction with the pulling operation of the starting rope (34), the lock mechanism (10) is activated to lock the output wheel (5). Configured to be
In the engine recoil starter,
The unlocking means (12) comprises an unlocking main driving tool (12A), an unlocking follower (12B), and an unlocking tool at the end of measurement (12C),
The unlocking main moving tool (12A) and the unlocking tool at the end of measurement (12C) are configured to be interlocked with the elastic body winding number measuring means (11),
The unlocking follower (12B) includes the unlocking holding position (12Ba) for holding the locking mechanism (10) in the unlocking position (21a), and the locking mechanism (10) from the unlocking position (21a) to the locking position ( 21b) is configured so that it can be switched and moved to the lock closing allowable position (12Bb) that allows the closing movement.
In conjunction with the pulling operation of the starting rope (34), when the elastic body winding number measuring means (11) advances from the initial position to the predetermined position, the unlocking main moving tool (12A) has a predetermined delay distance. Based on the fact that after unlocking (L1), the unlocking follower (12B) is reached, and the unlocking follower (12B) is switched from the unlocking holding position (12Ba) to the lock enabling position (12Bb). The locking mechanism (10) is released from the unlocking follower (12B) and switched from the unlocking position (21a) to the locking position (21b) to prevent the output wheel (5) from rotating. Configure
The lock release tool (12C) at the end of the measurement is linked to the lock position (21b) when the elastic body winding number measuring means (11) finishes measuring the target winding number. ) To the unlocking position (21a), the lock mechanism (10) is unlocked to output the accumulated power of the power accumulating elastic body (4), and the output wheel (5). The engine start shaft (7) is configured to start and rotate through the output side one-way rotation transmission means (6) in order.
An engine recoil starter characterized by that. The engine recoil starter according to claim 1,
The measurement reset means (70) is configured to return the elastic body winding number measuring means (11) to the initial position based on the rewind rotation in which the recoil reel (1) rewinds the starting rope (34). ,
An engine recoil starter characterized by that. The engine recoil starter according to claim 2,
The lock mechanism (10) includes a drive stop portion (20) provided on the output wheel (5), and a drive stop operation means (21) that is detachable from the drive stop portion (20).
The drive stop operation means (21) is configured to be switchable between a lock position (21b) and a lock release position (21a), and when the drive stop operation means (21) is in the lock position (21b), the drive stop While engaging the part (20) to prevent the output wheel (5) from rotating,
When the drive stop operating means (21) is in the unlocked position (21a), the drive stop portion (20) is released to allow the output wheel (5) to rotate,
The elastic body winding number measuring means (11) includes a feed claw (14) provided on the input wheel (3), a measuring claw wheel (15) chopped by the feed claw (14), and this measurement. A ratchet mechanism (49) that leaves the claw wheel (15) at each counting position,
The measurement reset means (70) includes a reset main drive portion (72) provided on the recoil reel (1), a reset follower portion (73) provided on the ratchet mechanism (49), and the measurement claws. Initial position biasing means (71) for biasing the vehicle (15) to the initial position,
The reset main drive portion (72) drives the reset follower portion (73) during the rewind rotation of the recoil reel (1) to rewind the starting rope (34), thereby moving the ratchet mechanism (49). Configured to release,
The initial position biasing means (71) is configured to return the measuring ratchet wheel (15) to the initial position when the ratchet mechanism (49) is released,
The drive stop operating means (21) is provided with a lock position biasing means (48), and the lock position biasing means (48) biases the drive stop operating means (21) to the lock position (21b). The drive stop operating means (21) is provided with a first passive part (22) and a second passive part (23),
The unlocking main moving tool (12A) of the unlocking means (12) is configured to rotate integrally with the measuring ratchet wheel (15), so that the measuring ratchet wheel (15) is at a position corresponding to the target number of windings. When it is reached, the unlocking main moving tool (12A) of the unlocking means (12) drives the first passive part (22) to unlock the drive stop operating means (21) from the lock position (21b). Configure to switch to position (21a)
In the state where the measuring ratchet wheel (15) returns to the initial position from the target number of times measurement end position, the unlocking follower (12B) of the unlocking means (12) receives the second passive part (23). Configured to hold the drive stop operation means (21) in the unlock position (21a),
An engine recoil starter characterized by that. The engine recoil starter according to claim 3,
The ratchet mechanism (49) includes a first ratchet pawl (51) and a second ratchet pawl (52),
The reset follower (73) is provided on the first ratchet pawl (51), and the locking of the first ratchet pawl (51) is released based on the rewind rotation of the recoil reel (1). Configured as
The second ratchet pawl (52) is configured such that when the number of windings of the power storage elastic body (4) reaches the target number of windings, the drive stop operating means (21) is moved from the lock position (21b). The second ratchet pawl (52) is unlocked in conjunction with being switched to the unlocked position (21a).
An engine recoil starter characterized by that. The engine recoil starter according to claim 1, 2, 3 or 4,
The unlocking follower (12B) is composed of an unlocking follower lever (12B), and the unlocking follower lever (12B) has the fulcrum shaft center (12D) as a fulcrum and the unlocking holding position (12Ba) and the locking operation. It can be switched to the allowable position (12Bb) and swingable,
This unlocking driven lever (12B) is pressed against the unlocking holding position (12Ba) by the unlocking holding spring (12E), whereas the unlocking main moving tool (12A) 12E) is configured so that it can be switched and moved to the lock insertion allowable position (12Bb).
An engine recoil starter characterized by that. The engine recoil starter according to claim 5,
The unlocking main moving tool (12A) is provided with a lever driving part (12Aa) and an inclined cam part (12Ab) for lever retracting operation,
During the measurement movement in which the elastic body winding number measuring means (11) moves from the initial position toward the target winding number reaching position, the lever driving unit (12Aa) of the unlocking main moving tool (12A) The lock release follower lever (12B) is configured to be switched and moved from the lock release holding position (12Ba) to the lock release allowable position (12Bb).
Lever retracting operation of the unlocking main moving tool (12A) while the elastic body winding number measuring means (11) is returning from the target winding number reaching position to the initial position by the measurement reset means (70). The inclined cam part (12Ab) retracts the unlocking follower lever (12B) from the engagement position (12Bc) to the unlocking main driving tool (12A) to the disengaging retreating position (12Bd), and the unlocking main driving tool ( 12A) is configured to pass through the unlocking driven lever (12B),
An engine recoil starter characterized by that. The engine recoil starter according to claim 6,
The unlocking driven lever (12B) is configured to switch and swing between the unlocking holding position (12Ba) and the lock closing allowable position (12Bb) with the fulcrum axis (12D) as a fulcrum. Then, along the direction intersecting the swing direction, it is configured to be swingable by switching between the engagement action position (12Bc) and the engagement release retracted position (12Bd),
The unlocking follower lever (12B) is the unlocking holding spring (12E), and elastically presses against the unlocking holding position (12Ba), and at the engaging action position (12Bc) with respect to the unlocking main moving tool (12A). Also configured to repress,
The unlocking driven lever (12B) is moved from the engaging position (12Bc) to the disengagement retracted position against the unlocking holding spring (12E) by the lever retracting operation inclined cam portion (12Ab). Configured to be retracted to (12Bd),
An engine recoil starter characterized by that. The engine recoil starter according to any one of claims 3 to 7,
A plurality of the drive stop portions (20) are provided at predetermined intervals in the circumferential direction of the output wheel (5), and each drive stop portion (20) is configured as a recess, and a blocking member that can be attached to and removed from the recess. (26)
An engine recoil starter characterized by that. The engine recoil starter according to any one of claims 1 to 8,
The output-side unidirectional rotation transmission means (6) is configured as a centrifugal clutch mechanism, which includes a centrifugal claw (44) provided on the start shaft (7) side and the output wheel (5). ) Side claw receiving portion (45), and the centrifugal claw (44) is swung by centrifugal force when the rotation of the starting shaft (7) exceeds a predetermined rotational speed. Configured to release the engagement with the receiving portion (45),
An engine recoil starter characterized by that. The engine recoil starter according to any one of claims 1 to 8,
The output-side unidirectional rotation transmission means (6) includes a dog claw (82) provided on the output wheel (5) side, and a dog claw that raises the dog claw (82) when the output wheel (5) rotates. A standing tool (83), and a claw receiving portion (84) which is provided on the start shaft (7) side and engages with the dog claw (82) when the dog claw (82) stands up,
An engine recoil starter characterized by that.

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