A hand pull starter

Abstract

The present invention provides a hand-pull starter, comprising a push claw, a clamping member and a guide member, wherein the clamping member comprises a connected clamping portion and a limiting portion, the clamping portion is clamped on the central column of a housing, the limiting portion and a blocking portion provided on the guide member abut against each other, so that the guide member and the push claw can cooperate with each other, so that the free end of the push claw can be extended or retracted as the pull rope drum rotates. The present invention replaces the compression spring in the prior art with a clamping member, and the friction force generated by the clamping force replaces the friction force generated by the pressing force to resist the guide member, so as to realize the function of the guide member bringing out or retracting the push claw, and has low requirements for the clamping member and a long service life.

Description

Technical Field

[0001] The invention relates to the field of starting a fuel engine, and in particular to a hand-pulled starter. Background Art

[0002] The existing hand-pull starter uses a circular retaining spring to give the pressure plate an inward force, and the inner circle of the pressure plate fits on the center column to generate friction resistance; when the pull rope pulls the rope wheel, the pressure plate uses the friction resistance to bring the puller out.

[0003] However, the existing solution has high requirements for the elastic force of the circular retaining spring. If the elastic force is too small, the friction resistance is small, which will cause the pressure plate to be unable to bring out the pulley; if the elastic force is too large, the friction resistance is large, which will easily cause the starting rope wheel to return to its position in time and cause the pull rope to pop out. In addition, the pressure plate and the center column rub against each other for a long time, and the friction between the two is reduced after wear, which finally causes the pressure plate to be unable to bring out the pulley. Summary of the invention

[0004] In order to solve the problems caused by the circular retaining spring in the prior art, the present invention provides a hand-pull starter, which uses a clamping member to replace the circular retaining spring, and utilizes the mutual resistance between the clamping member and the guide member to achieve the extension or retraction of the pusher claw.

[0005] The technical solution of the present invention is:

[0006] A hand pull starter, comprising a housing, a rope drum, a guide, a reset spring, and a fastener, wherein the rope drum and the guide are both sleeved on the central column of the housing and can rotate around the central column; the fastener is arranged on the central column, and is used to connect the guide, the rope drum, and the housing together; the two ends of the reset spring are respectively arranged on the rope drum and the central column; a rope is wound around the rope drum, one end of the rope is connected to the rope drum, and the other end of the rope extends out of the housing and is connected to the handle;

[0007] The hand-pull starter also includes a pusher claw and a clamping member, the pusher claw is arranged around the central column, the pull rope drum is provided with a positioning column, the pull rope drum is provided with an annular channel outside the positioning column, and the annular channel is concentric with the central column; one end of the pusher claw is sleeved on the positioning column and can rotate around it, and the free end of the pusher claw can extend into the annular channel; the guide member and the pusher claw are arranged adjacent to each other, and the guide member and the pusher claw cooperate with each other to enable the free end of the pusher claw to extend or retract as the pull rope drum rotates;

[0008] The clamping member comprises a clamping portion and a limiting portion which are connected to each other. The clamping portion is clamped on the central column, and the limiting portion and the blocking portion arranged on the guide member are mutually blocked and matched.

[0009] The present invention replaces the compression spring in the prior art with a clamping member, and replaces the friction force generated by the pressing force with the friction force generated by the clamping force to resist the guide member, thereby realizing the function of the guide member to bring out or retract the claw, with low requirements for the clamping member and a long service life.

[0010] Furthermore, the clamping part at least clamps a part of the circumferential outer wall of the center column, and extends from the clamping part along the radial direction of the center column to the stopper to form the limiter; the limiter and the stopper cooperate with each other in the rotation direction of the cable pull drum, and are used to limit the guide member from rotating in the same direction as the cable pull drum. The mutual low-speed force between the limiter and the guide member replaces the direct use of friction force to limit the guide member in the prior art, and the limiter effect is better and the service life is longer.

[0011] Furthermore, the clamping part extends out of the limiting part at the relative position, the abutting part is a circular arc boss concentric with the central column, and the end of the circular arc boss and the limiting part abut against each other. Using more than one limiting part to limit the guide member has a better limiting effect.

[0012] Furthermore, it also includes a cover plate, which is arranged on the clamping member to prevent the clamping member from popping out of the central column during the rotation process.

[0013] Furthermore, the guide member cover is arranged on the pusher claw, one of the guide member or the pusher claw comprises a slide groove, and the other comprises a guide protrusion; the guide protrusion matches the slide groove and is arranged in the slide groove. The guide protrusion and the slide groove structure are used to realize the function of extending and retracting the pusher claw.

[0014] Furthermore, the two pusher claws are included, and the corresponding two positioning columns are symmetrically arranged relative to the central column; the two pusher claws are synchronously extended when the pull rope disc is pulled and rotated, and are synchronously retracted when the pull rope disc is reset and rotated. More than one pusher claw is used, and multiple pusher claws act on the starting wheel together, making it easier for the starter to start the engine.

[0015] Furthermore, the guide member includes a positioning portion, and the pull rope drum includes a positioning stop portion, and the positioning portion and the positioning stop portion cooperate with each other to locate the relative position of the guide member on the pull rope drum when the pull rope drum is reset and rotated. The relative position of the positioning guide member on the pull rope drum shortens the empty pulling distance of the hand pull starter and improves the starting efficiency.

[0016] Furthermore, when the pusher claw is just fully retracted, the positioning stop portion stops the positioning portion. During the reset rotation process, the position of the guide member when the pusher claw is just fully retracted is the position with the shortest empty pull distance.

[0017] Furthermore, the pull rope drum further includes a blocking boss, which is arranged on the outside of the annular channel, and the positioning column is arranged on the inside of the annular channel; after the pusher claw extends into the annular channel, the blocking boss is used to block the free end of the pusher claw. A low-speed boss is added to support the pusher claw to drive the starter wheel, share the force strength of the pusher claw, and improve the life of the hand-pull starter.

[0018] Furthermore, the contact surface between the pusher claw and the blocking boss is an arc surface. On the one hand, the back of the pusher claw is an arc surface, which is more conducive to extending and inserting into the starting wheel and retracting; on the other hand, it also increases the contact area between the pusher claw and the low-speed boss, further reducing the force strength of the pusher claw. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an exploded view of an embodiment of a hand pull starter.

[0020] Figure 2 It is a schematic diagram of the pulling state of the pull rope drum of the hand pull starter embodiment.

[0021] Figure 3 This is a schematic diagram of the hand pull starter embodiment after the tightening member is installed.

[0022] Figure 4 Schematic diagrams of multiple embodiments of clamping members.

[0023] Figure 5 Schematic diagram of the bottom structure of the guide member embodiment.

[0024] Figure 6 Schematic diagram of a rope pull drum embodiment.

[0025] Figure 7 A schematic diagram of another embodiment of a pull rope disc.

[0026] Figure 8 Schematic diagram of a guide member embodiment.

[0027] Description of reference numerals:

[0028] 1- cover, 11- center column;

[0029] 2-pull rope disc, 21-pull rope, 22-handle, 23-positioning column, 24-annular channel, 25-positioning resisting part, 26-resisting boss, 27-contact surface;

[0030] 3-guide member, 31-low-end part, 32-slideway, 33-positioning part;

[0031] 4-return spring, 5-fastener;

[0032] 6-clamping member, 61-clamping portion, 62-limiting portion;

[0033] 7-push claw, 71-free end, 72-guide protrusion;

[0034] 8- Cover plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] Reference Figure 1 As shown, the hand pull starter includes a housing 1, a pull rope drum 2, a guide member 3, a return spring 4, and a fastener 5. The pull rope drum 2 and the guide member 3 are both provided with circular holes at their center positions, and both are sleeved on the central column 11 of the housing through the circular holes, and both can rotate around the central column 11.

[0037] The fastener 5 is arranged on the center column 11 to connect the guide member 3, the rope drum 2 and the housing 1 together. An internal thread can be provided in the center column 11, and a bolt can be used as the fastener 5; after the rope drum 2 and the guide member 3 are sleeved on the center column 11, the bolt is screwed into the internal thread, and the guide member 3 and the rope drum 2 will not be separated from the housing 1. A gasket can be added under the bolt to increase the holding force of the fastener 5. Obviously, other fasteners that can connect the guide member 3, the rope drum 2 and the housing 1 together are also applicable to the present application.

[0038] The rope drum 2 can rotate relative to the housing 1 with the central column 11 as the central axis. A rope 21 is wound around the rope drum 2, one end of which is connected to the rope drum 2, and the other end of which extends out of the housing 1 and is connected to the handle 22. The rope 21 can be pulled out by pulling the handle 22, so that the rope drum 2 is pulled and rotated. The rope drum 2 can be automatically reset by using the reset spring 4. The two ends of the reset spring 4 are respectively connected to the rope drum 2 and the central column 11. When the rope drum 2 is pulled and rotated, the reset spring 4 can store energy; when the external pulling force becomes smaller or disappears, the reset spring 4 returns to its original shape to drive the rope drum 2 to rotate in the opposite direction of the pulling direction, and the rope 21 is rewound onto the rope drum 2. The reset spring 4 can be a reset coil spring.

[0039] Combination Figure 2 , Figure 7As shown, the pull starter also includes a pusher pawl 7 and a clamping member 6, and the pusher pawl 7 is arranged around the central column 11. A positioning column 23 is provided on the pull rope drum 2, and an annular channel 24 is provided outside the positioning column 23 of the pull rope drum 2, and the annular channel 24 is concentric with the central column 11. The annular channel 24 is used to accommodate the engine starting wheel, and the starting wheel is connected to the engine crankshaft, so that the starting wheel is driven to rotate to complete the ignition start of the engine.

[0040] One end of the pusher claw 7 is sleeved on the positioning column 23 and can rotate around it, and the other end of the pusher claw 7 is a free end 71, which can be inserted into the annular channel 24. After the free end 71 of the pusher claw is inserted into the annular channel 24, it will be stuck in the starting wheel as the pull rope drum 2 is pulled and rotated, thereby driving the starting wheel to rotate in the same direction as the pull rope drum 2 to achieve the effect of starting the engine ignition.

[0041] Combination Figure 3 As shown, the clamping member 6 includes a connected clamping portion 61 and a limiting portion 62, the clamping portion 61 is clamped on the central column 11, and the limiting portion 62 cooperates with the blocking portion provided on the guide member 3. The clamping portion 61 is clamped on the circumferential outer wall of the central column 11, and the limiting portion 62 is connected to the clamping portion 61. The guide clamp is provided with a blocking portion at the central column 11, and the limiting portion 62 and the blocking portion can block each other in the circumferential direction of the central column 11, and the limiting portion 62 blocks the blocking portion so that the guide member 3 is blocked. When the pull rope 21 is pulled out to drive the pull rope drum 2 or the pull rope drum 2 rotates to retract the pull rope 21 under the action of the reset spring 4, the guide member 3 will not rotate in the same direction or synchronously with the pull rope drum 2 due to the blocking of the clamping member 6 when it is not subjected to other forces. This solution abandons the circular retaining spring in the prior art, and the friction force generated by the clamping force replaces the friction force generated by the existing pressing force to resist the guide member 3, thereby realizing the function of the guide member 3 to bring out or retract the claw 7, while the requirements for the clamping member 6 are relatively low and the service life is relatively long.

[0042] The clamping part 61 at least clamps a part of the circumferential outer wall of the center column 11. The clamping force between the clamping part 61 and the center column 11 makes the clamping member 6 rotate in the circumferential direction of the center column 11 with a large friction force, that is, the guide member 3 does not rotate when subjected to a small external force, but can still rotate with the center column 11 as the central axis when the external force is greater than the friction force. The friction force is between the clamping part 61 and the outer wall of the center column 11. The contact surface between the clamping part 61 and the outer wall of the center column 11 can be a line contact or a surface contact to increase the contact area and further improve the friction force.

[0043] Figure 4The clamping member 6 shown is three kinds of special-shaped clips, extending from the clamping portion 61 along the radial direction of the center column 11 to the stopper portion of the guide member 3 to form a limit portion 62. The clamping portion 61 and the limit portion 62 can be formed as a whole to form the clamping member 6. The clamping portion 61 can be an arc, or two arcs connected together by the limit portion 62. The clamping portion 61 can also be a circle with a cutout, and the diameter of the circle or arc is smaller than the diameter of the center column 11, so that when the clamping portion 61 is installed in place, it will be clamped on the center column 11.

[0044] The number of the limiting parts 62 can be multiple or single. The limiting part 62 can be formed by extending from one place of the clamping part 61 along the radial direction of the center column 11. The limiting part 62 can also extend from the opposite sides of the clamping part 61 in the opposite direction to form the limiting parts 62 with relative positions, which has a better effect on the circumferential resistance of the guide member 3. The limiting part 62 and the resistance part resist and cooperate with each other in the rotation direction of the rope pull drum 2, and are used to limit the guide member 3 from rotating in the same direction as the rope pull drum 2.

[0045] The clamping part 61 extends a limiting part 62 at a relative position, and the abutting part is a circular arc boss concentric with the center column 11, and the end of the circular arc boss and the limiting part 62 abut against each other. The circular arc boss can be formed by a circular boss concentric with the center column 11 with a notch, and the notch is used to place the limiting part 62. The number of notches matches the number of limiting parts 62.

[0046] The hand pull starter may also include a cover plate member 8, which is provided on the clamping member 6. When the pusher claw 7 is brought out by the guide member 3 and clamped into the starting wheel of the engine, under the reaction of the starting wheel, the external force transmitted by the guide member 3 through the pusher claw 7 is greater than the friction force of the clamping member 6, so that the guide member 3 is driven to rotate synchronously with the pull rope drum 2; at this time, the clamping member 6 is also rotated synchronously with the pull rope drum 2 under the action of the blocking portion on the guide member 3, and a cover plate member 8 may be provided on the clamping member 6 to prevent the clamping member 6 from popping out. The cover plate member 8 is mainly provided above the clamping portion 61 to limit the clamping member 6 in the axial direction of the center column 11 to prevent it from popping out of the center column 11 when rotating. Figure 1 In the embodiment shown, the fastener 5 is a bolt, the center column 11 is hollow and has an internal thread, and the cover plate 8 is a gasket for the bolt; first, the pull rope drum 2 and the guide member 3 are put on the center column 11 in sequence, and then the center column 11 is clamped with the clamping member 6, and the gasket is covered thereon, and finally the bolt is screwed into the center column 11, and the assembly of the hand pull starter is completed.

[0047] However, by adding a slot at the stopper portion of the guide member 3 and inserting the limiter 62 into the slot, the clamping member 6 can also be prevented from popping out, especially when the clamping member 6 includes a plurality of limiters 62. In this solution, the cover member 8 does not need to be added.

[0048] The guide member 3 and the pusher claw 7 are arranged adjacent to each other, and the guide member 3 and the pusher claw 7 cooperate with each other so that the free end 71 of the pusher claw can be extended or retracted as the rope pull drum 2 rotates. In one embodiment of the cooperation structure between the guide member 3 and the pusher claw 7, a boss is provided on the bottom surface of the guide member 3, and when the rope pull drum 2 is pulled and rotated, the pusher claw 7 rotates synchronously with the rope pull drum 2, and the guide member 3 will delay rotation or temporarily stop rotating due to the resistance of the clamping member 6, and the pusher claw 7 is resisted by the boss so that the free end 71 of the pusher claw rotates relative to the positioning column 23 and extends into the annular channel 24, and when the free end 71 of the pusher claw is stuck in the starting wheel of the engine, the pusher claw 7 drives the starting wheel to rotate in the same direction so that the engine is ignited and started, and at this time, the guide member 3 is also driven by the pusher claw 7 to rotate in the same direction; when the rope pull drum 2 rotates in the opposite direction to the pulling direction under the action of the reset spring 4, the pusher claw 7 extending into the annular channel 24 will be resisted by the starting wheel and retracted, and at this time, the boss will not block the retraction of the pusher claw 7.

[0049] Combination Figure 5 As shown in the second embodiment of the matching structure between the guide member 3 and the pusher claw 7, the guide member 3 is covered on the pusher claw 7, the bottom surface of the guide member 3 is provided with a slide groove 32, and the top surface of the pusher claw 7 is provided with a guide protrusion 72, which is arranged in the slide groove 32 and can slide along the slide groove 32. When the pull rope drum 2 is not pulled, the guide protrusion 72 is located on the inner side of the slide groove 32, and the pusher claw 7 is in a retracted state.

[0050] When the pull rope 21 is pulled out to drive the pull rope disc 2 to rotate, the guide member 3 is restricted by the clamping member 6 and will not be driven to rotate. The guide protrusion 72 on the pusher claw 7 will slide along the slide groove 32 in the radial direction away from the center column 11. At the same time, the pusher claw 7 rotates outward with the positioning column 23 as the axis, and the free end 71 of the pusher claw gradually enters the annular channel 24. When the free end 71 of the pusher claw is clamped into the starting wheel, the guide protrusion 72 should be at the outermost side of the slide groove 32 that can slide, so as to prevent the guide protrusion 72 from detaching from the slide groove 32 and retracting the pusher claw 7 without words. On the premise that the guide protrusion 72 will not slide out of the slide groove 32, the slide groove 32 can also be opened on the side of the annular channel 24.

[0051] When the rope pull drum 2 is reset and rotated under the action of the reset spring 4, the guide member 3 is restricted by the clamping member 6 and will not be driven to rotate, and the guide protrusion 72 on the pusher claw 7 will slide into the inner side of the slide groove 32 along the original path until the guide protrusion 72 or the free end 71 of the pusher claw 7 is blocked. As a result, the guide member 3 will be at the position at the moment when the rope pull drum 2 is reset and rotated, and will not reset and rotate in the same direction as the rope pull drum 2.

[0052] Obviously, since the guide protrusion 72 and the slide groove 32 are matched in the radial direction of the center column 11, the bottom groove wall of the slide groove 32 can be penetrated, and the top surface of the guide protrusion 72 can extend out of the slide groove 32, which will not affect the matching between the guide protrusion 72 and the slide groove 32.

[0053] Similarly, in the third embodiment of the matching structure between the guide member 3 and the pusher dog 7, the guide member 3 is covered on the pusher dog 7, the bottom surface of the guide member 3 is provided with a guide protrusion 72, the top surface of the pusher dog 7 is provided with a slide groove 32, and the guide protrusion 72 is arranged in the slide groove 32 and can slide along the slide groove 32. The difference from the second embodiment is that during the sliding process of the guide protrusion 72 relative to the slide groove 32, the guide protrusion 72 does not rotate relative to the center column 11, and the pusher dog 7 rotates relative to the positioning column 23 under the action force between the slide groove 32 and the guide protrusion 72, so that the free end 71 of the pusher dog is extended or retracted.

[0054] In another embodiment, the hand-pull starter has two pushers 7, and the corresponding two positioning columns 23 are symmetrically arranged relative to the center column 11. The two pushers 7 are synchronously extended when the pull rope drum 2 is pulled and rotated, and then clamped into the starting wheel. At this time, the force acting on the starting wheel is approximately 180°, and the joint action drives the starting wheel to rotate. This solution has higher starting efficiency and less force on a single pusher 7. Similarly, during the retraction process of the pushers 7, the two pushers 7 are synchronously retracted as the pull rope drum 2 resets and rotates.

[0055] Similarly, three or more pusher claws 7 may be provided, and the plurality of pusher claws 7 are evenly distributed on the circumference of the concentric circle of the central column 11, so as to be commonly engaged with the starting wheel to drive the same to rotate.

[0056] like Figure 5 The slide groove 32 of the guide member 3 is deeper, and the guide member 3 will be in the position at the moment when the pull rope drum 2 is reset and rotated, and will not reset and rotate in the same direction as the pull rope drum 2. Therefore, the guide protrusion 72 will slide into the deeper part of the slide groove 32; when the pull rope drum 2 is pulled again, there will be a large distance of empty pulling, until the pull rope 21 is pulled out for a distance, the pusher claw 7 will extend to the annular channel 24 and get stuck in the starting wheel.

[0057] For this purpose, in another embodiment of the hand pull starter, Figure 6 As shown in the figure, the cover 1 is hidden for the sake of structural clarity. The upper picture shows the rope pull drum 2 when the pusher claw 7 is fully retracted, and the lower picture shows the rope pull drum 2 when the pusher claw 7 is fully extended. The guide member 3 includes a positioning portion 33, and the rope pull drum 2 includes a positioning stopper 25. The positioning portion 33 and the positioning stopper 25 are mutually abutted and matched to locate the relative position of the guide member 3 on the rope pull drum 2 when the rope pull drum 2 is reset and rotated. When the positioning portion 33 and the positioning stopper 25 abut against each other, as shown in FIG. Figure 6As shown in the above figure, the guide member 3 will be driven by the rope pull drum 2 to resume rotation, and the relative positions of the guide member 3 and the rope pull drum 2 are fixed at the position where the positioning portion 33 and the positioning stop portion 25 stop each other, so that the guide protrusion 72 will no longer continue to slide to the depth of the slide groove 32, shortening the empty pull distance and improving the starting efficiency of the hand pull starter and the user experience.

[0058] Obviously, after the pusher dog 7 is completely retracted, the earlier the positioning stopper 25 stops the positioning portion 33, the shorter the empty pull distance will be. Here, the complete retraction may refer to the free end 71 of the pusher dog just completely leaving the annular channel 24.

[0059] Therefore, if Figure 7 As shown in FIG. 1 , in a preferred embodiment of the hand-pull starter, when the pusher claw 7 is just fully retracted, the positioning stopper 25 stops the positioning part 33. Figure 6 Compared with the pull rope disc 2, when the pusher claw 7 is retracted, the positioning stopper 25 is closer to the free end 71 of the pusher claw. This solution further shortens the empty pull distance and improves the starting efficiency.

[0060] In another preferred embodiment of the hand pull starter, Figure 8 As shown, the guide member 3 is covered on the pusher claw 7, the bottom surface of the guide member 3 is provided with a slide groove 32, and the top surface of the pusher claw 7 is provided with a guide protrusion 72. The guide protrusion 72 is placed in the slide groove 32 and can slide along the slide groove 32. For details, please refer to the second embodiment of the matching structure between the guide member 3 and the pusher claw 7. The slide groove 32 in this embodiment is shallow. When the pusher claw 7 is just fully retracted, the bottom groove wall of the slide groove 32 blocks the guide protrusion 72, and then the guide member 3 is driven by the guide protrusion 72 to rotate back with the rope pull drum 2. The bottom of the slide groove in this embodiment is the positioning part 33, and the guide protrusion of the pusher claw 7 arranged on the rope pull drum 2 is the positioning and blocking part 25.

[0061] Similarly, there is a third preferred embodiment of the hand-pull starter, the structure of the guide member 3 and the pusher 7 refers to the third embodiment of the matching structure between the guide member 3 and the pusher 7, the slide groove 32 on the pusher 7 is shortened, and when the pusher 7 is just fully retracted, the guide protrusion 72 on the bottom surface of the guide member 3 abuts against the outermost groove wall of the slide groove 32, so that the guide member 3 is driven to rotate back with the pull rope drum 2. In this embodiment, the outermost groove wall of the slide groove of the pusher 7 is the positioning abutment 25, and the guide protrusion on the guide member 3 is the positioning portion 33.

[0062] When the pusher claw 7 extends into the annular channel 24, the free end 71 of the pusher claw will be stuck in the starting wheel, thereby driving the starting wheel and the pull rope drum 2 to rotate synchronously, but at this time, the pusher claw 7 is subjected to a large reaction force from the starting wheel. Figure 6The pull rope drum 2 located at the bottom includes a stop boss 26, which is arranged on the outside of the annular channel 24. Correspondingly, the positioning column 23 of the pusher dog 7 is arranged on the inside of the annular channel 24. When the pusher dog 7 extends into the annular channel 24, the stop boss 26 is used to stop the free end 71 of the pusher dog, so as to provide a supporting force in the rotation direction of the pusher dog 7. The supporting force is located at the opposite back side of the contact surface between the pusher dog 7 and the starting wheel, so that the 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, effectively preventing the pusher dog 7 from being damaged.

[0063] In a more preferred pull rope drum 2, the contact surface 27 between the pusher pawl 7 and the blocking boss 26 is an arc surface. The back of the pusher pawl 7 contacts the blocking boss 26, and the back is set as an arc surface, which can increase the contact area between it and the blocking boss 26. At the same time, when the pusher pawl 7 is inserted into the starting wheel or retracted, the pusher pawl 7 and the starting wheel will not interfere with each other.

[0064] The above-mentioned embodiments are preferred implementation modes of the present application and are only used to facilitate the explanation of the present application. They are not intended to limit the present application in any form. Any person with ordinary knowledge in the relevant technical field, if they do not depart from the scope of the technical features of the present application, can make equivalent embodiments by making partial changes or modifications to the technical contents disclosed in the present application and do not depart from the technical features of the present application. All of these still fall within the scope of the technical features of the present application.

Claims

1. A hand pull starter, characterized in that: The invention comprises a cover shell, a rope-pulling drum, a guide, a reset spring and a fastener. The rope-pulling drum and the guide are both sleeved on the central column of the cover shell and can rotate around the central column. The fastener is arranged on the central column and is used to connect the guide, the rope-pulling drum and the cover shell together. The two ends of the reset spring are respectively arranged on the rope-pulling drum and the central column. A rope is wound around the rope-pulling drum, one end of which is connected to the rope-pulling drum, and the other end of which extends out of the cover shell and is connected to the handle. The hand-pull starter also includes a pusher claw and a clamping member, the pusher claw is arranged around the central column, the pull rope drum is provided with a positioning column, the pull rope drum is provided with an annular channel outside the positioning column, and the annular channel is concentric with the central column; one end of the pusher claw is sleeved on the positioning column and can rotate around it, and the free end of the pusher claw can extend into the annular channel; the guide member and the pusher claw are arranged adjacent to each other, and the guide member and the pusher claw cooperate with each other to enable the free end of the pusher claw to extend or retract as the pull rope drum rotates; The clamping member comprises a clamping portion and a limiting portion connected to each other, the clamping portion is clamped on the central column, and the limiting portion and the blocking portion provided on the guide member are mutually blocked and matched; The clamping portion at least clamps a portion of the circumferential outer side wall of the central column, and extends from the clamping portion along the radial direction of the central column to the stop portion to form the limiting portion; The limiting portion and the resisting portion resist and cooperate with each other in the rotation direction of the rope pulling disc, so as to limit the guide member from rotating in the same direction as the rope pulling disc; The clamping parts extend out of the limiting parts at relative positions, the blocking parts are arc bosses concentric with the center column, and the ends of the arc bosses and the limiting parts are mutually blocked and matched; It also includes a cover plate component, which is covered on the clamping component.

2. The hand pull starter according to claim 1, characterized in that: The guide member cover is arranged on the pusher claw, one of the guide member or the pusher claw comprises a slide groove, and the other comprises a guide protrusion; the guide protrusion matches the slide groove and is arranged in the slide groove.

3. The hand pull starter according to claim 2, characterized in that: It comprises two pusher claws, and the corresponding two positioning columns are symmetrically arranged relative to the central column; the two pusher claws are synchronously extended when the rope pulling disc is pulled and rotated, and are synchronously retracted when the rope pulling disc is reset and rotated.

4. The hand pull starter according to claim 1, characterized in that: The guide member includes a positioning portion, and the rope pull drum includes a positioning stop portion. The positioning portion and the positioning stop portion stop and cooperate with each other to locate the relative position of the guide member on the rope pull drum when the rope pull drum is reset and rotated.

5. The hand pull starter according to claim 4, characterized in that: When the pusher claw is just completely retracted, the positioning stopper stops the positioning portion.

6. The hand pull starter according to claim 1, characterized in that: The rope pull drum also includes a resisting boss, which 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 pusher claw extends into the annular channel, the resisting boss is used to resist the free end of the pusher claw.

7. The hand pull starter according to claim 6, characterized in that: The contact surfaces between the pusher claw and the resisting boss are both arc surfaces.

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