阅读说明：本技术 一种手拉启动器 (Hand-pulling starter ) 是由 戴从九 赵政 张瑞林 方志勇 鲁银柯 叶晓波 于 2021-10-19 设计创作，主要内容包括：本发明提供一种手拉启动器,包括拨爪、夹紧件和导向件,夹紧件包括相连的夹紧部和限位部,夹紧部夹持在罩壳的中心柱上,限位部和设在导向件上的抵挡部相互抵挡,使得导向件和拨爪可以相互配合,从而使拨爪的自由端可以随着拉绳盘旋转而伸出或者收回。本发明用夹紧件替代现有技术中的压缩弹簧,由夹持力产生的摩擦力替代压紧力产生的摩擦力来抵挡导向件,实现导向件带出或者收回拨爪的功能,对于夹紧件的要求低,使用寿命长。(The invention provides a hand pull starter which comprises a shifting claw, a clamping piece and a guide piece, wherein the clamping piece comprises a clamping part and a limiting part which are connected, the clamping part is clamped on a central column of a housing, and the limiting part and a blocking part arranged on the guide piece are blocked mutually, so that the guide piece and the shifting claw can be matched mutually, and the free end of the shifting claw can extend out or retract along with the rotation of a pulling rope. The clamping piece replaces a compression spring in the prior art, the friction force generated by the clamping force replaces the friction force generated by the pressing force to resist the guide piece, the function of taking the guide piece out or withdrawing the pusher dog is realized, the requirement on the clamping piece is low, and the service life is long.)

1. A hand-pull starter is characterized by comprising a housing, a pull rope disc, a guide piece, a return spring and a fastener, wherein the pull rope disc and the guide piece are sleeved on a central column of the housing and can rotate around the central column; the fastener is arranged on the central column and is used for connecting the guide piece, the pull rope disc and the cover shell together; two ends of the reset spring are respectively arranged on the pull rope disc and the central column; a pull rope is wound on the pull rope disc, one end of the pull rope is connected to the pull rope disc, and the other end of the pull rope extends out of the housing and is connected to the handle;

the hand pull starter further comprises a pusher dog and a clamping piece, the pusher dog is arranged on the periphery of the central column, a positioning column is arranged on the pull rope disc, an annular channel is arranged on the outer side of the positioning column of the pull rope disc, and the annular channel and the central column are concentric; one end of the shifting claw is sleeved on the positioning column and can rotate around the positioning column, and the free end of the shifting claw can extend into the annular channel; the guide piece and the pusher dog are arranged adjacently, and the guide piece and the pusher dog are mutually matched for enabling the free end of the pusher dog to extend or retract along with the rotation of the stay cord;

the clamping piece comprises a clamping portion and a limiting portion which are connected, the clamping portion is clamped on the central column, and the limiting portion and the abutting portion arranged on the guide piece are in abutting fit with each other.

2. The hand pull starter of claim 1, wherein the clamping portion at least clamps a portion of the circumferential outer sidewall of the center post, and the limiting portion is formed by extending from the clamping portion to the abutting portion along the radial direction of the center post;

the limiting part and the resisting part are matched in a mutually resisting mode in the rotating direction of the pull rope disc and used for limiting the guide piece to rotate along with the pull rope disc in the same direction.

3. The hand pull starter according to claim 2, wherein the clamping portion extends from the position-limiting portion at the opposite position, the stopping portion is an arc boss concentric with the center post, and the end of the arc boss and the position-limiting portion are in mutual stopping fit.

4. The hand pull initiator of claim 2, further comprising a cover member that covers over the clamp member.

5. A hand pull actuator according to claim 1 wherein said guide member covers said finger, one of said guide member or said finger including a runner and the other of said guide member or said finger including a guide projection; the guide convex part is matched with the sliding groove and is arranged in the sliding groove.

6. The hand pull starter of claim 5, comprising two of the fingers, wherein the two corresponding positioning posts are symmetrically disposed with respect to the center post; the two poking claws are pulled to rotate along with the rope pulling disc to synchronously extend out, and are reset to rotate along with the rope pulling disc to synchronously retract.

7. The hand pull starter of claim 1 wherein the guide member includes a positioning portion and the pull cord reel includes a positioning abutment portion, the positioning portion and the positioning abutment portion being in abutting engagement with each other for positioning the guide member in a relative position on the pull cord reel when the pull cord reel is rotationally repositioned.

8. The hand pull starter of claim 7 wherein the detent abutment portion abuts the detent portion when the finger has just been fully retracted.

9. The hand pull starter of claim 1, wherein the pull rope disc further comprises a resisting boss, the resisting boss is arranged at the outer side of the annular channel, and the positioning column is arranged at the inner side of the annular channel; after the shifting claw extends into the annular channel, the blocking boss is used for blocking the free end of the shifting claw.

10. The hand pull starter of claim 9 wherein the contact surface between the finger and the stop boss is a circular arc surface.

Technical Field

The invention relates to the field of starting of fuel engines, in particular to a hand-pull starter.

Background

In the conventional hand-pull starter, an inward force is applied to a pressure plate by using a circular clamp spring, and the inner ring of the pressure plate is attached to a central column to generate frictional resistance; when the rope pulley is pulled by the pull rope, the poking claw is taken out by the pressure plate by using frictional resistance.

However, the existing scheme has high requirement on the elasticity of the circular clamp spring, and if the elasticity is too small, the friction resistance is small, so that the pressure plate cannot be taken out of the poking claw; if the elastic force is too large, the frictional resistance is large, and the starting rope wheel is easy to return untimely to cause the pull rope to pop up. In addition, the pressure plate and the central column rub against each other for a long time, and the friction force between the pressure plate and the central column is reduced after the pressure plate and the central column are worn, so that the pressure plate cannot be taken out and grabbed.

Disclosure of Invention

In order to solve the problems caused by a circular clamp spring in the prior art, the invention provides a hand pull starter, wherein a clamping piece is used for replacing the circular clamp spring, and the clamping piece and a guide piece are mutually resisted to realize the extension or retraction of a pusher dog.

The technical scheme of the invention is as follows:

a hand pull starter comprises a housing, a pull rope disc, a guide piece, a return spring and a fastener, wherein the pull rope disc and the guide piece are sleeved on a central column of the housing and can rotate around the central column; the fastener is arranged on the central column and is used for connecting the guide piece, the pull rope disc and the cover shell together; two ends of the reset spring are respectively arranged on the pull rope disc and the central column; a pull rope is wound on the pull rope disc, one end of the pull rope is connected to the pull rope disc, and the other end of the pull rope extends out of the housing and is connected to the handle;

the hand pull starter further comprises a pusher dog and a clamping piece, the pusher dog is arranged on the periphery of the central column, a positioning column is arranged on the pull rope disc, an annular channel is arranged on the outer side of the positioning column of the pull rope disc, and the annular channel and the central column are concentric; one end of the shifting claw is sleeved on the positioning column and can rotate around the positioning column, and the free end of the shifting claw can extend into the annular channel; the guide piece and the pusher dog are arranged adjacently, and the guide piece and the pusher dog are mutually matched for enabling the free end of the pusher dog to extend or retract along with the rotation of the stay cord;

the clamping piece comprises a clamping portion and a limiting portion which are connected, the clamping portion is clamped on the central column, and the limiting portion and the abutting portion arranged on the guide piece are in abutting fit with each other.

The clamping piece replaces a compression spring in the prior art, the friction force generated by the clamping force replaces the friction force generated by the pressing force to resist the guide piece, the function of taking the guide piece out or withdrawing the pusher dog is realized, the requirement on the clamping piece is low, and the service life is long.

Further, the clamping portion at least clamps a part of the circumferential outer side wall of the center column, and the limiting portion is formed by extending from the clamping portion to the resisting portion along the radial direction of the center column; the limiting part and the resisting part are matched in a mutually resisting mode in the rotating direction of the pull rope disc and used for limiting the guide piece to rotate along with the pull rope disc in the same direction. The mutual low-gear force between the limiting part and the guide part is used for replacing the situation that the friction force is directly utilized to limit the guide part in the prior art, the limiting effect is better, and the service life is longer.

Further, the clamping portion extends out of the limiting portion at the opposite position, the abutting portion is an arc boss concentric with the central column, and the end portion of the arc boss and the limiting portion are in abutting fit with each other. More than one limiting part is used for limiting the guide piece, so that the guide piece has a better limiting effect.

Further, the clamping piece device further comprises a cover plate piece which covers the clamping piece. For preventing the clamping member from popping out of the center post during rotation.

Further, the guide part is covered on the pusher dog, one of the guide part or the pusher dog comprises a sliding groove, and the other of the guide part or the pusher dog comprises a guide convex part; the guide convex part is matched with the sliding groove and is arranged in the sliding groove. The function of extending and retracting the pusher dog is realized by the structure of the guide convex part and the sliding groove.

Further, the positioning device comprises two shifting claws, and the two corresponding positioning columns are symmetrically arranged relative to the central column; the two poking claws are pulled to rotate along with the rope pulling disc to synchronously extend out, and are reset to rotate along with the rope pulling disc to synchronously retract. More than one pusher dog is adopted, and a plurality of pusher dogs act on the starting wheel together, so that the starter can start the engine more easily.

Further, the guide piece comprises a positioning part, the pull rope disc comprises a positioning resisting part, and the positioning part and the positioning resisting part are mutually matched in a resisting way and used for positioning the relative position of the guide piece on the pull rope disc when the pull rope disc is reset and rotated. The relative position of the positioning guide piece on the pull rope disc shortens the idle pull distance of the hand pull starter and improves the starting efficiency.

Further, when the pusher dog is just completely retracted, the positioning resisting part resists and blocks the positioning part. In the reset rotation process, the position of the guide part when the pusher dog is just completely retracted is the position with the shortest idle pull distance.

Furthermore, the pull rope disc also comprises a resisting boss, the resisting boss is arranged on the outer side of the annular channel, and the positioning column is arranged on the inner side of the annular channel; after the shifting claw extends into the annular channel, the blocking boss is used for blocking the free end of the shifting claw. And a low-gear boss is additionally arranged and used for supporting the pusher dog to drive the starting wheel, so that the stress intensity of the pusher dog is shared, and the service life of the hand pull starter is prolonged.

Further, the contact surfaces between the pusher dog and the retaining boss are both arc surfaces. On one hand, the back surface of the pusher dog is a circular arc surface, which is more beneficial to extending and clamping into the starting wheel and retracting; on the other hand, the contact area between the pusher dog and the low-gear boss is increased, and the stress strength of the pusher dog is further reduced.

Drawings

Fig. 1 is an exploded view of an embodiment of a hand starter.

Fig. 2 is a schematic diagram of a pull state of a pull rope disc in an embodiment of a hand pull starter.

Fig. 3 is a schematic diagram of the hand pull starter after the installation of the tightening piece is completed.

FIG. 4 is a schematic view of various embodiments of a clamp.

Fig. 5 is a bottom view of an embodiment of the guide.

Fig. 6 is a schematic view of an embodiment of a pull cord reel.

Figure 7 is a schematic view of another embodiment of a pull cord reel.

Fig. 8 is a schematic view of an embodiment of a guide.

Description of reference numerals:

1-housing, 11-central column;

2-a rope pulling disc, 21-a pulling rope, 22-a handle, 23-a positioning column, 24-an annular channel, 25-a positioning resisting part, 26-a resisting boss and 27-a contact surface;

3-guide piece, 31-low-grade part, 32-chute, 33-positioning part;

4-a return spring, 5-a fastener;

6-clamping piece, 61-clamping part, 62-limiting part;

7-pusher dog, 71-free end, 72-guide projection;

8-cover plate member.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the hand pull starter comprises a housing 1, a pull rope disc 2, a guide piece 3, a return spring 4 and a fastener 5. The center positions of the pull rope disc 2 and the guide piece 3 are provided with round holes, and the pull rope disc and the guide piece are sleeved on a center post 11 of the housing through the round holes and can rotate around the center post 11.

The fastener 5 is arranged on the central column 11, and the guide 3, the pull rope disc 2 and the cover 1 are connected together. An internal thread can be arranged in the central column 11, and a bolt is used as the fastening piece 5; after the pull rope disc 2 and the guide piece 3 are sleeved on the central column 11, the guide piece 3 and the pull rope disc 2 cannot be separated from the housing 1 after the bolt is screwed into the internal thread. A washer may be added under the bolt to increase the retention of the fastener 5. Obviously, other fasteners that can connect the guide 3, the pull-cord reel 2 and the cover 1 together are also suitable for the present application.

The pulling rope disc 2 can rotate relative to the housing 1 by taking the central column 11 as a central shaft. The winding has stay cord 21 on the stay cord dish 2, and the one end of stay cord 21 is connected on the stay cord dish 2, and the other end of stay cord 21 stretches out housing 1 and is connected on handle 22, and pull handle 22 just can pull out stay cord 21 to make stay cord dish 2 by the pulling rotation. The pull rope disc 2 can be automatically reset by utilizing the reset spring 4, two ends of the reset spring 4 are respectively connected to the pull rope disc 2 and the central column 11, and the reset spring 4 can store energy when the pull rope disc 2 is pulled to rotate; when the external tension is reduced or disappears, the return spring 4 returns to the original shape to drive the pull rope disc 2 to rotate towards the direction opposite to the pulled direction, and the pull rope 21 is wound on the pull rope disc 2 again. The return spring 4 may be a return coil spring.

As shown in fig. 2 and 7, the hand pull starter further includes a finger 7 and a clamping member 6, and the finger 7 is disposed around the center post 11. A positioning column 23 is arranged on the pull rope disc 2, an annular channel 24 is arranged on the outer side of the positioning column 23 of the pull rope disc 2, and the annular channel 24 is concentric with the central column 11. The annular channel 24 is adapted to receive an engine starter wheel that is coupled to the engine crankshaft such that rotation of the starter wheel effects a spark start of the engine.

One end of the pusher dog 7 is sleeved on the positioning column 23 and can rotate around the positioning column, and the other end of the pusher dog 7 is a free end 71, and the free end 71 can extend into the annular channel 24. After the free end 71 of the pusher dog extends into the annular channel 24, the free end is clamped into the starting wheel along with the pulling rotation of the rope pulling disc 2, so that the starting wheel is driven to rotate along with the rope pulling disc 2 in the same direction, and the effect of starting the engine for ignition is achieved.

As shown in fig. 3, the clamping member 6 includes a clamping portion 61 and a limiting portion 62 connected to each other, the clamping portion 61 is clamped on the center post 11, and the limiting portion 62 is engaged with the abutting portion provided on the guide member 3. The clamping portion 61 is clamped on the circumferential outer side wall of the center post 11, and the limiting portion 62 is connected with the clamping portion 61. The guide clamp is provided with a blocking part at the center column 11, the limiting part 62 and the blocking part can mutually block in the circumferential direction of the center column 11, and the limiting part 62 blocks the blocking part so that the guide piece 3 is blocked. When the pulling rope 21 is pulled out to drive the pulling rope disc 2 or the pulling rope disc 2 rotates under the action of the return spring 4 to withdraw the pulling rope 21, the guide piece 3 does not rotate along with the pulling rope disc 2 in the same direction or synchronously due to the resisting of the clamping piece 6 under the condition that other acting forces are not applied to the guide piece 3. According to the scheme, the circular clamp spring in the prior art is abandoned, the friction force generated by the clamping force replaces the friction force generated by the existing pressing force to resist the guide piece 3, the function that the guide piece 3 is taken out or the pusher dog 7 is withdrawn is realized, the requirement on the clamping piece 6 is relatively low, and the service life is relatively long.

The clamping part 61 clamps at least part of the circumferential outer side wall of the center post 11, and the clamping force between the clamping part 61 and the center post 11 enables the clamping part 6 to rotate in the circumferential direction of the center post 11 with large friction force, namely the guide part 3 does not rotate when being subjected to small external force and can rotate by taking the center post 11 as a central shaft when the external force is larger than the friction force, and the friction force is between the clamping part 61 and the outer side wall of the center post 11. The contact surface between the clamping portion 61 and the outer sidewall of the center post 11 may be a line contact or a surface contact to increase the contact area and further increase the friction force.

The clamping member 6 shown in fig. 4 is three special-shaped clamp springs, and a limiting part 62 is formed by extending from the clamping part 61 to the resisting part of the guide member 3 along the radial direction of the center column 11. The clamping portion 61 and the stopper portion 62 may be integrally formed as the clamping member 6. The clamping portion 61 may be a circular arc or two circular arcs connected together by the limiting portion 62, and the clamping portion 61 may also be a circle with a cut, and the diameter of the circle or the circular arc is smaller than that of the central pillar 11, so that the clamping portion 61 is clamped on the central pillar 11 after being installed in place.

The number of the stopper portions 62 may be plural or single. The stopper portion 62 may be formed to extend from one position of the clamping portion 61 in the radial direction of the center post 11. The limiting part 62 can also extend out from two opposite sides of the clamping part 61 along opposite directions to form the limiting part 62 with opposite positions, and the limiting part has better effect on circumferentially resisting the guide piece 3. The limiting part 62 and the resisting part are matched with each other in a resisting way in the rotating direction of the stay rope disc 2 and used for limiting the guide piece 3 to rotate along with the stay rope disc 2 in the same direction.

The clamping portion 61 extends out of a limiting portion 62 at the opposite position, the resisting portion is an arc boss concentric with the center column 11, and the end portion of the arc boss and the limiting portion 62 are mutually matched in a resisting mode. The arc boss may be a circular boss concentric with the center post 11 and formed by a notch, and the notch is used for installing the limiting portion 62. The number of notches and the number of the limiting parts 62 are matched.

The hand pull starter can also comprise a cover plate member 8, and the cover plate member 8 covers the clamping member 6. When the pusher dog 7 is taken out by the guide 3 and then clamped into a starting wheel of an engine, under the reaction of the starting wheel, the external acting force transmitted by the guide 3 through the pusher dog 7 is greater than the friction force of the clamping piece 6, so that the guide 3 is driven to synchronously rotate along with the rope pulling disc 2; in this case, the clamping element 6 is also rotated synchronously with the cable drum 2 by the abutment on the guide element 3, and a cover element 8 can be placed over the clamping element 6 to prevent the clamping element 6 from being ejected. The cover member 8 is mainly provided to cover the grip portion 61 to restrict the grip member 6 from being ejected from the center post 11 when rotating in the axial direction of the center post 11. In the embodiment shown in fig. 1, the fastening member 5 is a bolt, the central column 11 is internally provided with a hollow internal thread, and the cover plate member 8 is a gasket of the bolt; firstly, the guy rope disc 2 and the guide piece 3 are sequentially sleeved on the central column 11, then the clamping piece 6 is used for clamping the central column 11, a gasket is covered on the central column 11, and finally, a bolt is screwed into the central column 11, so that the assembly of the hand-pulling starter is completed.

However, the clamping groove is additionally formed at the abutting portion of the guide member 3, and the limiting portion 62 is clamped in the clamping groove, so that the effect of preventing the clamping member 6 from popping out can be achieved, particularly when the clamping member 6 comprises a plurality of limiting portions 62. In this embodiment, it is not necessary to add the deck member 8.

Guide 3 and finger 7 are arranged adjacent to each other, guide 3 and finger 7 cooperating with each other for allowing the free end 71 of the finger to be extended or retracted as the rope drum 2 rotates. One embodiment of a matching structure between the guide part 3 and the pusher dog 7 can be that a convex column is arranged on the bottom surface of the guide part 3, when the rope pulling disc 2 is pulled to rotate, the pusher dog 7 rotates synchronously along with the rope pulling disc 2, the guide part 3 can rotate in a delayed way or does not rotate temporarily due to the blocking of the clamping part 6, the pusher dog 7 is blocked by the convex column, so that the free end 71 of the pusher dog rotates relative to the positioning column 23 and extends into the annular channel 24, after the free end 71 of the pusher dog is clamped into a starting wheel of an engine, the pusher dog 7 drives the starting wheel to rotate in the same direction, so that the engine is ignited and started, and at the moment, the guide part 3 is also driven by the pusher dog 7 to rotate in the same direction; when the pull rope disc 2 rotates in the direction opposite to the pulled direction under the action of the return spring 4, the pusher dog 7 extending out of the annular channel 24 is resisted by the starting wheel to retract, and the convex column cannot resist the retraction of the pusher dog 7.

Referring to fig. 5, a second embodiment of the fitting structure between guide 3 and finger 7, guide 3 is covered on finger 7, guide 3 has slide groove 32 on its bottom surface, finger 7 has guide projection 72 on its top surface, and guide projection 72 is housed in slide groove 32 and can slide along slide groove 32. When the cord reel 2 is not pulled, the guide protrusion 72 is located inside the slide groove 32, and the finger 7 is in a retracted state.

When the pulling rope 21 is pulled out to drive the pulling rope disc 2 to rotate, the guide member 3 is restricted by the clamping member 6 and cannot be driven to rotate, the guide convex part 72 on the pusher dog 7 slides along the sliding groove 32 in the radial direction away from the center post 11, meanwhile, the pusher dog 7 rotates outwards with the positioning post 23 as the shaft, and the free end 71 of the pusher dog gradually enters the annular channel 24. When the free end 71 of the finger is snapped into the actuator wheel, it is important that the guide projection 72 is at the outermost side of the path along which the runner 32 can slide, to prevent the guide projection 72 from disengaging the runner 32 and withdrawing the finger 7 in any event. The slide groove 32 may also be open on the side of the annular channel 24, provided that the guide projection 72 does not slip out of the slide groove 32.

When the cable drum 2 is rotated again under the action of the return spring 4, the guide element 3 is likewise not rotated because it is restrained by the clamping element 6, and the guide projection 72 on the finger 7 slides along the way into the slide groove 32 until the guide projection 72 or the free end 71 of the finger 7 is stopped. The guide 3 is thus located at the moment of the return rotation of the cable drum 2 and does not rotate in the same direction as the return rotation of the cable drum 2.

Obviously, since the guide protrusion 72 and the chute 32 are engaged in the radial direction of the center post 11, the bottom groove wall of the chute 32 can be penetrated, and the top surface of the guide protrusion 72 can protrude out of the chute 32 without affecting the engagement between the guide protrusion 72 and the chute 32.

Similarly, in the third embodiment of the fitting structure between the guide 3 and the finger 7, the guide 3 is covered on the finger 7, the bottom surface of the guide 3 is provided with the guide protrusion 72, the top surface of the finger 7 is provided with the slide groove 32, and the guide protrusion 72 is disposed in the slide groove 32 and can slide along the slide groove 32. The difference from the second embodiment is that during the sliding of the guide projection 72 relative to the slide slot 32, the guide projection 72 does not rotate relative to the central post 11, and the finger 7 rotates relative to the locating post 23 under the force between the slide slot 32 and the guide projection 72, thereby causing the free end 71 of the finger to extend or retract.

In another embodiment, the hand pull starter has two fingers 7, and two corresponding positioning columns 23 are symmetrically arranged with respect to the central column 11. Two pusher dogs 7 are stretched out when being pulled rotatory along with the stay cord dish 2 in step, block into the starter wheel afterwards, and the effort that acts on the starter wheel this moment is roughly 180, and the combined action drives the starter wheel and rotates. This solution allows a higher starting efficiency and a lower force to be applied to a single finger 7. Likewise, during the retraction of the fingers 7, the two fingers 7 are retracted synchronously with the return rotation of the cable drum 2.

In a similar way, three or more pusher dogs 7 can be arranged, and a plurality of pusher dogs 7 are uniformly distributed on the circumference of the concentric circle of the central column 11 and are clamped into the starting wheel together to drive the starting wheel to rotate.

As the sliding groove 32 of the guide member 3 shown in fig. 5 is deep, and the guide member 3 is located at the position of the moment when the pulling rope disc 2 is returned to rotate, and does not return to rotate along with the pulling rope disc 2 in the same direction, so that the guide convex portion 72 slides into the deep position of the sliding groove 32; when pulling the cable drum 2 again, there is a large distance of empty pull until after pulling out the distance of the cable 21, the finger 7 will not extend out to the annular channel 24 and snap into the starter wheel.

Therefore, in another embodiment of the hand pull starter, as shown in fig. 6, the housing 1 is hidden for the sake of structural clarity, the upper picture is the pull rope disc 2 when the finger 7 is completely retracted, and the lower picture is the pull rope disc 2 when the finger 7 is completely extended. The guide piece 3 comprises a positioning part 33, the pull rope disc 2 comprises a positioning resisting part 25, and the positioning part 33 and the positioning resisting part 25 are mutually matched in a resisting way and used for positioning the relative position of the guide piece 3 on the pull rope disc 2 when the pull rope disc 2 is reset and rotated. After location portion 33 and location keep off portion 25 each other and keep off, as shown in the last picture of fig. 6, guide 3 can be driven by stay cord dish 2 and reply rotatoryly, and the relative position of guide 3 and stay cord dish 2 is then fixed in location portion 33 and location keep off portion 25 each other on keeping off the position of time to direction convex part 72 can not continue to slide to the depths of spout 32 again, has shortened the idle running distance, improves hand power starter's start-up efficiency and user experience and feels.

Obviously, after the finger 7 is completely retracted, the air-drawn distance will be shorter the earlier the positioning abutting portion 25 abuts against the positioning portion 33. Full retraction may refer to the point at which the free end 71 of the finger has just completely cleared the annular channel 24.

Thus, as shown in fig. 7, in a preferred embodiment of the hand starter, the positioning abutment portion 25 abuts against the positioning portion 33 when the finger 7 is just fully retracted. In comparison with the cord reel 2 of fig. 6, the positioning abutment 25 is closer to the free end 71 of the finger when the finger 7 is retracted. According to the scheme, the air-pulling distance is further shortened, and the starting efficiency is improved.

In another preferred embodiment of the hand pull starter, as shown in fig. 8, the guiding element 3 is covered on the finger 7, the bottom surface of the guiding element 3 is provided with the sliding slot 32, the top surface of the finger 7 is provided with the guiding protrusion 72, the guiding protrusion 72 is arranged in the sliding slot 32 and can slide along the sliding slot 32, and reference can be made to the second embodiment of the matching structure between the guiding element 3 and the finger 7. The slide groove 32 in this embodiment is shallow, and when the finger 7 is just completely retracted, the bottom groove wall of the slide groove 32 abuts against the guide protrusion 72, and then the guide member 3 is rotated back with the rope reel 2 by the guide protrusion 72. The bottom of the chute in this embodiment is the positioning portion 33, and the guiding protrusion of the finger 7 provided on the pull-cord reel 2 is the positioning resisting portion 25.

Similarly, in a third preferred embodiment of the hand pull starter, the structure of the guide 3 and the finger 7 is shortened by referring to the third embodiment of the matching structure between the guide 3 and the finger 7, and the sliding groove 32 on the finger 7 is shortened, when the finger 7 is just completely retracted, the guide convex part 72 on the bottom surface of the guide 3 abuts against the groove wall on the outermost side of the sliding groove 32, so that the guide 3 is driven to rotate along with the rope pulling disc 2. In this embodiment, the outermost slot wall of the sliding slot of the finger 7 is the positioning resisting part 25, and the guiding convex part on the guiding element 3 is the positioning part 33.

When the pusher dog 7 extends out of the annular channel 24, the free end 71 of the pusher dog can be clamped into the starter wheel, so that the starter wheel and the pull rope disc 2 are driven to rotate synchronously, but the reaction force of the starter wheel on the pusher dog 7 is larger. In an embodiment of the pull-cord reel 2, referring to the pull-cord reel 2 located below in fig. 6, the pull-cord reel 2 comprises a stop boss 26, the stop boss 26 is arranged outside the annular channel 24, and the positioning column 23 of the finger 7 is arranged inside the annular channel 24. When the finger 7 has been extended into the annular channel 24, the abutment boss 26 is adapted to abut against the free end 71 of the finger to provide a supporting force for the finger 7 in the direction of rotation. The supporting force is located on the opposite back of the contact surface of the pusher dog 7 and the starting wheel, so that the acting force of the starting wheel on the pusher dog 7 can be borne on the free end 71 of the pusher dog and the positioning column 23, and the pusher dog 7 is effectively prevented from being damaged.

In a more preferred cord reel 2, the contact surface 27 between the finger 7 and the abutment projection 26 is a circular arc surface. The back of the pusher dog 7 contacts with the resisting boss 26, and the back is set to be a circular arc surface, so that the contact area between the pusher dog 7 and the resisting boss 26 can be increased, and meanwhile, when the pusher dog 7 is clamped into the starting wheel or withdrawn, the pusher dog 7 and the starting wheel cannot interfere with each other.

The above-mentioned embodiments are merely preferred embodiments of the present application, which are not intended to limit the present application in any way, and it will be understood by those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the present application.