A starting control device for an engine starter

Abstract

The present invention relates to the technical field of engine starters, and specifically relates to a starting control device for an engine starter, which includes a housing, a starting wheel, a retractable spring, a pull rope, a drive shaft, a one-way clutch, a limiting mechanism, and a flywheel. The starting wheel is installed inside the housing, the pull rope is installed inside the starting wheel, the drive shaft is installed on the starting wheel, the one-way clutch is installed at the other end of the drive shaft, the limiting mechanism is installed inside the one-way clutch, and the flywheel is installed at the output end of the one-way clutch. By limiting the contraction and expansion of the coil spring, the unwinding and winding speeds of the rope during the pulling and releasing of the pull rope are changed, thereby realizing the normal operation of the starter and improving the working efficiency of the engine starter.

Description

Technical Field

[0001] The present invention relates to the technical field of engine starters, and more specifically, to a starting control device for an engine starter. Background Art

[0002] The engine starting control device is the core component of the starting system, responsible for coordinating the conversion of electrical energy or kinetic energy into mechanical energy and ensuring the transition of the engine from a stationary state to automatic operation. Existing engine starters include pull starters, hand crank starters, and electric starters. The hand crank starter has flexible torque control but requires multiple turns of rotation and has low efficiency during cold starts. The electric starter is convenient but requires electrical power as the starting source, and the environment can affect the performance of the battery, resulting in starter failure. Therefore, for small generators or chainsaws used in remote areas, pull starters are still dominant.

[0003] During the use of a pull starter, when the pull rope is pulled, the ratchet on the one-way clutch needs to first contact the flywheel, and then the one-way clutch drives the flywheel to rotate, thus forming the initial power. However, the ratchet does not initially contact the flywheel, so the pull rope drives the one-way clutch to require a large force in the initial state, and then gives the one-way clutch a large speed to drive the flywheel. On the one hand, if the pulling speed is uneven, it will cause the rotational speed of the one-way clutch to change, and then the speed transmitted to the flywheel cannot reach the normal working speed of the engine crankshaft, thus affecting the working efficiency of the engine. On the other hand, after the crankshaft reaches the normal working speed of the engine, at this time, the ratchet of the one-way clutch disengages from the flywheel, and the pull rope needs to be released, so that the starting device stops. However, affected by the inertia of the coil spring, the reset speed of the pull rope is too fast, which will damage the handle of the pull rope and also affect the normal operation of the starter.

[0004] Based on this, in order to solve the problem of how to avoid the unstable change of the pull rope speed caused by the unstable contraction of the coil spring during the pulling process, thus affecting the normal operation of the engine, the present invention designs a starting control device for an engine starter. Summary of the Invention

[0005] The starting control device for an engine starter provided by the present invention solves the problem that the unstable contraction of the coil spring causes unstable changes in the pull rope speed, thus affecting the normal operation of the engine. By limiting the contraction and expansion of the coil spring, the winding and unwinding speeds of the rope during pulling and releasing the rope are changed, and then the normal operation of the starter is achieved, and the working efficiency of the engine starter is improved.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A starting control device for an engine starter provided by the present invention includes a housing, a starting wheel, a retracting spring, a pull rope, a drive shaft, a one-way clutch, a limiting mechanism, and a flywheel. The starting wheel is installed on the housing and inside the housing. The pull rope is installed inside the starting wheel. The drive shaft is installed on the starting wheel. The one-way clutch is installed at the other end of the drive shaft. The limiting mechanism is installed inside the one-way clutch. The flywheel is installed at the output end of the one-way clutch. When the pull rope is pulled, the limiting mechanism drives the diameter of the retracting spring to first increase and then decrease. When the pull rope is pulled, the limiting mechanism drives the one-way clutch to start quickly. On the one hand, the one-way clutch is used to drive the flywheel to rotate. On the other hand, due to the characteristic of one-way transmission, it can prevent the engine from backwashing and driving the pull rope, thereby avoiding the high-speed rebound of the handle and hurting people.

[0008] Preferably, the limiting mechanism includes a gear ring, a bottom plate, a limiting groove, a limiting rod, a slider, a clamping post, a driving gear, a rack, a fixed magnet, and an adsorption magnet. The gear ring is installed on the starting wheel. The bottom plate is installed inside the gear ring. The limiting groove is opened on the gear ring. The limiting rod is slidably connected in the limiting groove. Both ends of the slider are installed on the bottom plate and the gear ring respectively. The clamping post is installed on the limiting rod. The driving gear is connected to the gear ring. The rack is meshed with the driving gear. The fixed magnet is installed on the back of the rack. The adsorption magnet is installed on the pull rope.

[0009] Preferably, the one-way clutch includes a chassis, a return spring, and ratchet teeth. The chassis is installed on the drive shaft. One end of the return spring is installed on the chassis. The ratchet teeth are installed at the other end of the return spring. A connecting groove is opened on the chassis. A push rod is installed between the ratchet teeth and the clamping post. The push rod is connected to the clamping post. When the return spring is not stretched, the push rod is in contact with the ratchet teeth. After the fixed magnet on the rack is separated from the adsorption magnet, at this time, under the action of the retracting spring, the gear ring resets, thereby driving the elastic speed of the retracting spring to slow down. Thus, when the pull rope resets, it can play a buffering role, thereby reducing the recoil force of the retracting spring on the pull rope and improving safety.

[0010] Preferably, a handle is installed at the end of the pull rope. The magnetism of the adsorption magnet gradually becomes stronger from the handle to the center of the retracting spring. As the magnetism changes, the adsorption force between the two also changes.

[0011] Preferably, there are eight clamping posts. The clamping posts are distributed in a circular array. A horizontal plane is provided on the clamping posts. On the one hand, it can accommodate the retracting spring and limit the outer ring of the retracting spring, so that it will not shift due to pulling. On the other hand, it can limit the retracting spring when it resets.

[0012] Preferably, a limit block is installed on the retractable spring, and a compression spring is installed between the limit block and the retractable spring; the buffer of the compression spring offsets part of the contraction force of the retractable spring during reset.

[0013] Preferably, the limit block is provided with a smooth surface and a engaging surface. The smooth surface faces the handle side, and the engaging surface faces the center side of the retractable spring; when the retractable spring contracts, at this time the engaging surface contacts the horizontal surface on the clamping post, thereby forming an engaging deceleration.

[0014] Preferably, a V-shaped folding plate is installed on the limit block, and the folding plate is installed on one side of the engaging surface, changing the moving track of the retractable spring during reset, and further buffering the reset of the retractable spring.

[0015] Preferably, a sleeve is installed on the flywheel, and a centrifugal block is installed in the sleeve to increase the inertia force of the flywheel and avoid recoil.

[0016] Preferably, air inlets are annularly arranged on the starting wheel. A baffle is provided at the non-pull rope connection of the air inlets. One end of the centrifugal block is installed with a traction rope connected to the baffle, thereby improving the heat dissipation efficiency of the motor.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For a starting control device of an engine starter proposed by the present invention, during the initial pulling process of the pull rope, at this time the drive shaft in the starting wheel gradually speeds up under the action of the pull rope, thereby driving the one-way clutch to rotate. The ratchet in the one-way clutch gradually fits with the outer ring on the flywheel, thereby driving the flywheel to rotate. The rack will drive the drive gear to rotate under the action of the pull rope. When the drive gear rotates, it synchronously drives the gear ring to rotate. The gear ring drives the limit rod on the bottom plate to slide in the limit groove, thereby driving the clamping post to move outwards, so as to realize the expansion of the outer ring of the retractable spring. However, when the adsorption magnet passes over the fixed magnet, it drives the rack and the gear to reset. During this process, the retractable spring expands outwards and then contracts inwards, so that the retractable spring stretches, speeds up first and then decelerates, thereby avoiding too large a recoil effect on the pull rope and the handle, and further affecting the normal operation of the starter.

[0019] 2. The starting control device of an engine starter proposed by the present invention. When the driving shaft drives the chassis to rotate, at this time, the ratchet teeth are thrown outwards under the action of gradually increasing rotational speed and centrifugal force, and then gradually come into contact with the flywheel. When the two come into contact, the ratchet teeth will drive the flywheel to rotate, gradually increasing the speed of the flywheel. The flywheel transmits this speed to the crankshaft, and then starts the first piston, thereby realizing the starting of the engine. The return spring is used to drive the ratchet teeth to reset when the rotational speed of the driving shaft slows down, so that the ratchet teeth are disengaged from the flywheel, and thus the power of the engine driving the crankshaft will not be recirculated to the driving shaft through the one-way clutch, thereby causing the recoil of the return spring and the starting wheel, and thus forming a protection for the starting device.

[0020] 3. The starting control device of an engine starter proposed by the present invention. On the one hand, the horizontal plane on the clamping post can accommodate the return spring and limit the outer ring of the return spring, so that it will not shift due to pulling. On the other hand, it can limit the position when the return spring resets. The limiting block can further reduce the speed during reset. When resetting, the compression spring on the limiting block is squeezed by the horizontal plane and contracts inward. The buffer of the compression spring offsets part of the contraction force of the reset return spring. At the same time, the limiting block directly reduces the reset speed of the return spring, thereby improving the safety and stability of the pull rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is the overall structure schematic diagram of the present invention;

[0023] Figure 2 is the schematic diagram inside the starting wheel of the present invention;

[0024] Figure 3 is Figure 2 the enlarged view of part A in

[0025] Figure 4 is the structural schematic diagram of the rack of the present invention;

[0026] Figure 5 is the structural schematic diagram of the limiting mechanism of the present invention;

[0027] Figure 6 is the structural schematic diagram of the limiting rod of the present invention;

[0028] Figure 7 isFigure 6 Enlarged view at B in the figure;

[0029] Figure 8 It is a schematic diagram of the limit block of the present invention.

[0030] In the figure: 1. Outer shell; 11. Air inlet; 12. Baffle; 2. Starting wheel; 3. Rewinding spring; 4. Pulling rope; 41. Handle; 42. Limit block; 421. Smooth surface; 422. Engaging surface; 423. Folding plate; 43. Compression spring; 5. Driving shaft; 6. One-way clutch; 61. Chassis; 611. Connecting groove; 62. Return spring; 63. Ratchet teeth; 64. Push rod; 7. Limiting mechanism; 71. Gear ring; 72. Bottom plate; 73. Limiting groove; 74. Limiting rod; 75. Slide block; 76. Clamping post; 761. Horizontal plane; 77. Driving gear; 78. Rack; 79. Fixed magnet; 710. Adsorbing magnet; 8. Flywheel; 81. Sleeve; 82. Centrifugal block. Specific embodiments

[0031] In order to better understand the above solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0032] As Figure 1-2 shown, a starting control device for an engine starter provided by the present invention includes an outer shell 1, a starting wheel 2, a rewinding spring 3, a pulling rope 4, a driving shaft 5, a one-way clutch 6, a limiting mechanism 7, and a flywheel 8. The starting wheel 2 is installed on the outer shell 1. A notch for placing the pulling rope 4 is provided on the starting wheel 2. The starting wheel 2 is tangent to the rope opening on the outer shell 1. The pulling rope 4 is installed inside the starting wheel 2. The driving shaft 5 is installed on the starting wheel 2. The driving shaft 5 connects the starting wheel 2 and the one-way clutch 6 to ensure that when the pulling rope 4 pulls the starting wheel 2, the starting wheel 2 can be driven to rotate by the rewinding spring 3. The rewinding spring 3 and the other end of the pulling rope 4 can be connected, that is, the pulling force directly acts on the rewinding spring 3, or they can be not connected. When not connected, the rewinding spring 3 is used as an energy storage device at this time (in the figure, it is shown as the case where the two are connected. At this time, the pulling rope 4 will drive the intermediate driving shaft 5 to rotate). The one-way clutch 6 is installed at the other end of the driving shaft 5. On the one hand, the one-way clutch 6 is used to drive the flywheel 8 to rotate. On the other hand, it can prevent the engine from backwashing and driving the pulling rope 4 through the characteristic of one-way transmission, thereby avoiding the high-speed rebound of the handle and hurting people;

[0033] The limiting mechanism 7 is installed inside the one-way clutch 6. The flywheel 8 is installed at the output end of the one-way clutch 6. When the pulling rope 4 is pulled, the limiting mechanism 7 drives the diameter of the rewinding spring 3 to first increase and then decrease. When the pulling rope 4 is pulled, the limiting mechanism 7 drives the one-way clutch 6 to start quickly.

[0034] When the pull cord 4 is pulled, the pull cord 4 will drive the starting wheel 2 to rotate at this time. The starting wheel 2 will drive the retracting spring 3 to compress. The retracting spring 3 is connected to the bottom plate 72 inside the limiting mechanism 7, and the bottom plate 72 passes through the gear ring 71 and is connected to the housing 1 of the starting wheel 2, thereby ensuring that the retracting spring 3 can be relatively compressed. During the compression process of the retracting spring 3, due to the existence of the limiting mechanism 7, while the pull cord 4 drives the internal rotation of the starting wheel 2, it will drive the limiting mechanism 7 to do work on the outer ring of the retracting spring 3, so that the outer ring of the retracting spring 3 expands outwards, thereby changing the contraction speed of the retracting spring 3. Thus, when the pull cord 4 is pulled, while the retracting spring 3 expands, it can change the moving speed of the retracting spring 3, and then change the speed of the pull cord 4. During the initial pulling process of the pull cord 4, at this time, the drive shaft 5 inside the starting wheel 2 gradually speeds up under the action of the pull cord 4, and then drives the one-way clutch 6 to rotate. The ratchet inside the one-way clutch 6 gradually fits with the outer ring on the flywheel 8, and then drives the flywheel 8 to rotate. When the adsorption magnet 710 on the pull cord 4 drives the fixed magnet 79 on the rack 78, the rack 78 will move forward under the action of the pull cord 4, and then drive the drive gear 77 to rotate. When the drive gear 77 rotates, it synchronously drives the gear ring 71 to rotate. The gear ring 71 drives the limiting rod 74 on the bottom plate 72 to slide in the limiting groove 73, and then the slider 75 changes its position, so as to drive the limiting rod 74 to move from the inner circle to the outer circle of the gear ring 71, and then drive the clamping column 76 to move outwards, thereby realizing the expansion of the outer ring of the retracting spring 3. However, when the adsorption magnet 710 passes over the fixed magnet 79 (the rack 78 to which the fixed magnet 79 adheres is blocked and will not continue to move forward), at this time, due to the retraction property of the torsion spring itself, it will drive the clamping column 76 to gather towards the center, thereby driving the rack 78 and the drive gear 77 to reset. During this process, the retracting spring 3 expands outwards and then contracts inwards, so that the retracting spring 3 unfolds, speeds up first and then slows down. When the pull cord 4 starts, the speed increase can enable the drive shaft 5 inside the starting wheel 2 to quickly reach the threshold for starting the engine. As the speed gradually increases, at this time, the retracting spring 3 decelerates, avoiding excessive inertia at the rear due to too high a speed, thereby avoiding excessive recoil of the pull cord 4 and the handle 41, and then affecting the normal operation of the starter.

[0035] Such as Figure 2-7As shown in the figure, the limiting mechanism 7 includes a gear ring 71, a bottom plate 72, a limiting groove 73, a limiting rod 74, a slider 75, a clamping post 76, a driving gear 77, a rack 78, a fixed magnet 79, and an adsorption magnet 710. The gear ring 71 is installed on the starting wheel 2, the bottom plate 72 is installed inside the gear ring 71, the limiting groove 73 is opened on the gear ring 71, the limiting rod 74 is slidably connected in the limiting groove 73, both ends of the slider 75 are installed on the bottom plate 72 and the gear ring 71 respectively, the clamping post 76 is installed on the limiting rod 74, the driving gear 77 is connected to the gear ring 71, the rack 78 is engaged with the driving gear 77, the fixed magnet 79 is installed on the back of the rack 78, and the adsorption magnet 710 is installed on the pull rope 4.

[0036] On the basis of the fixed bottom plate 72, at this time, the adsorption magnet 710 is installed on the pull rope 4, and the adsorption magnet 710 will drive the fixed magnet 79 to move. The fixed magnet 79 is installed on the back of the rack 78. At the initial stage of the movement of the pull rope 4, the pull rope 4 will drive the rack 78 to rotate the driving gear 77, and the driving gear 77 will drive the gear ring 71 to rotate. There are various driving methods in this place. One of them is the connection method. At this time, it is necessary to keep the diameter of the driving gear 77 slightly larger, or the moving distance of the rack 78 smaller, so as to ensure that the rack 78 will not drive the driving gear 77 to rotate too much. Another method is through the tooth meshing method, so as to drive the gear ring 71 to rotate through the driving gear 77. During this process, a driven wheel can be added to meet the required transmission ratio for work.

[0037] When the gear ring 71 rotates, it will drive the slider 75 to move. The gear ring 71 is rotatably connected to the slider 75, and the limiting rod 74 is also rotatably connected to the slider 75. Then, when the gear ring 71 rotates relative to the bottom plate 72, at this time, the size of the slider 75 will not change, so the slider 75 moves relatively. At this time, it will drive the limiting rod 74 to slide outwards along the limiting groove 73, and then drive the clamping post 76 to move outwards, thereby expanding the outer ring of the retraction spring 3, and then reducing the force required to pull the pull rope 4. After the fixed magnet 79 on the rack 78 is separated from the adsorption magnet 710, at this time, under the action of the retraction spring 3, the gear ring 71 resets, and then drives the elastic speed of the retraction spring 3 to slow down, so as to play a buffering role when the pull rope 4 resets, and then reduce the recoil force of the retraction spring 3 on the pull rope 4 and improve safety.

[0038] A handle 41 is installed at the end of the pull rope 4, and the magnetism of the adsorption magnet 710 gradually becomes stronger from the handle 41 towards the center of the retraction spring 3. As the magnetism changes, the adsorption force between the two also changes;

[0039] The rack 78 here is an L-shaped rack 78. The top bent part of the rack 78 contacts the stretching bottom. Initially, the fixed magnet 79 contacts the adsorption magnet 710. After the dislocation between the two, the pull rope 4 contacts the fixed magnet 79. Furthermore, the fixed magnet 79 can smooth the pull rope 4, thereby reducing the pulling of the edge pull rope 4. On the other hand, when the adsorption magnet 710 is not in contact with the fixed magnet 79, the adsorption magnet 710 is pulled by the fixed magnet 79, and at this time, the pull rope 4 moves outwards more smoothly. When the adsorption magnet 710 crosses the fixed magnet 79, at this time, the fixed magnet 79 has an attractive force on the adsorption magnet 710, thereby reducing the speed at which the pull rope 4 is stretched outwards. When the pull rope 4 is reset, in the initial state, the pull rope 4 is attracted by the fixed magnet 79 and the adsorption magnet 710, and the reset speed is fast. After crossing, the speed decreases, thereby improving the stability and safety of the starter.

[0040] The one-way clutch 6 includes a chassis 61, a return spring 62, and a ratchet 63. The chassis 61 is installed on the drive shaft 5. One end of the return spring 62 is installed on the chassis 61, and the ratchet 63 is installed at the other end of the return spring 62. A connection groove 611 is opened on the chassis 61. A push rod 64 is installed between the ratchet 63 and the clamping post 76. The push rod 64 is connected to the clamping post 76. When the return spring 62 is not stretched, the push rod 64 contacts the ratchet 63. A groove is opened on the chassis 61. At this time, a push block is installed on the clamping post 76. When the clamping post 76 moves outwards, the push block moves synchronously, thereby driving the ratchet 63 to extend outwards. When the pull rope 4 is started, the ratchet 63 can quickly contact the flywheel 8, thereby reducing the starting time of the flywheel 8 and improving the working efficiency of the starter. When the clamping post 76 gathers towards the center, at this time, the push block also contracts, and thus there will be no recoil phenomenon, improving the stability of the starter.

[0041] When the drive shaft 5 drives the chassis to rotate, at this time, the ratchet 63 is thrown outwards by the centrifugal force of the gradually increasing rotational speed, and then gradually contacts the flywheel 8. When the two are in contact, at this time, the ratchet 63 drives the flywheel 8 to rotate, gradually accelerating the flywheel 8. The flywheel 8 transmits this speed to the crankshaft, thereby starting the first piston, and thus realizing the start of the engine. The return spring 62 is used to drive the ratchet 63 to reset when the rotational speed of the drive shaft 5 slows down, so that the ratchet 63 is disengaged from the flywheel 8, and thus the power of the engine driving the crankshaft will not be backflushed to the drive shaft 5 through the one-way clutch 6, thereby causing the backflush of the return spring 3 and the starter wheel 2, and thus forming a protection for the starting device.

[0042] There are eight clamping posts 76, and the clamping posts 76 are distributed in a circular array. A horizontal plane 761 is provided on the clamping posts 76.

[0043] On the one hand, the horizontal plane 761 on the clamping post 76 can accommodate the retractable spring 3, limit the outer ring of the retractable spring 3, so that it will not shift due to pulling. On the other hand, it can limit the position when the retractable spring 3 resets. When the retractable spring 3 is stretched outwards, it expands outwards and thus will not fit against the horizontal plane 761. However, when the retractable spring 3 contracts inwards, it will contact the horizontal plane 761, thereby decelerating the contraction of the retractable spring 3 to a certain extent, avoiding the retractable spring 3 contracting too fast and damaging the reset of the pull rope 4.

[0044] As Figure 7-8 shown, a limiting block 42 is installed on the retractable spring 3, and a compression spring 43 is installed between the limiting block 42 and the retractable spring 3.

[0045] The limiting block 42 can further reduce the speed during reset. During reset, the compression spring 43 on the limiting block 42 is squeezed by the horizontal plane 761 and thus contracts inwards. The buffer of the compression spring 43 offsets part of the contraction force of the reset retractable spring 3. At the same time, the limiting block 42 directly reduces the reset speed of the retractable spring 3, thereby improving the safety and stability of the pull rope 4.

[0046] The limiting block 42 is provided with a smooth surface 421 and a clamping surface 422. The smooth surface 421 faces the handle 41 side, and the clamping surface 422 faces the center side of the retractable spring 3.

[0047] The slope of the smooth surface 421 is smaller than the slope of the clamping surface 422. When the retractable spring 3 is stretched outwards, at this time the smooth surface 421 contacts the clamping post 76, and thus will not cause great resistance, making the pulling force of the human hand smaller. When the retractable spring 3 contracts, at this time the clamping surface 422 contacts the horizontal plane 761 on the clamping post 76, forming a clamping deceleration, thereby realizing the rapid expansion and slow contraction of the retractable spring 3, and improving the safety and stability of the retractable spring 3 through the speed difference.

[0048] A V-shaped folding plate 423 is installed on the limiting block 42, and the folding plate 423 is installed on one side of the clamping surface 422.

[0049] When squeezing the clamping surface 422, at this time through the V-shaped folding plate 423, when the retractable spring 3 passes through the clamping surface 422, it squeezes the V-shaped folding plate 423, and thus squeezes the internal compression spring 43. The V-shaped folding plate 423 deforms, and under the reset of the compression spring 43, the V-shaped folding plate 423 will rebound, thereby acting on the retractable spring 3 in the opposite direction, changing the moving trajectory of the retractable spring 3 during reset, and further buffering the reset of the retractable spring 3.

[0050] A sleeve 81 is installed on the flywheel 8, and a centrifugal block 82 is installed inside the sleeve 81. An air inlet 11 is annularly and arrayedly formed on the starting wheel 2. A baffle 12 is provided at a position of the air inlet 11 that is not connected to the pulling rope 4. One end of the centrifugal block 82 is installed with a pulling rope connected to the baffle 12.

[0051] When the flywheel 8 rotates, at this time, the centrifugal block 82 on the flywheel 8 moves from a position close to the center of the sleeve 81 to the edge of the flywheel 8, thereby gradually increasing the centrifugal force of the flywheel 8 and at the same time imparting inertia to the flywheel 8. Therefore, when the one-way clutch 6 is disengaged, the flywheel 8 will not be subjected to a sudden speed change, so that the crankshaft will not have a recoil effect, thereby improving the stability of the starter. When the flywheel 8 rotates, at this time, the engine starts. By providing the air inlet 11, the engine is cooled, which improves the stability and working efficiency of the engine compared with the prior art; through the setting of the baffle 12, the inside of the starting wheel 2 can be protected when the engine is not started, avoiding dust and the like from entering the inside. After the engine starts, the pulling rope connected to the end of the centrifugal block 82 close to the center of the flywheel 8 directly drives the baffle 12 to move towards the edge, thereby unfolding the air inlet 11 and realizing the heat dissipation of the engine crankshaft.

[0052] When the engine needs to be started by a hand pull starter, the operator holds the handle 41, drives the pull rope 4 to move through the handle 41, the pull rope 4 drives the drive shaft 5 to rotate, and at the same time the pull rope 4 pulls the retraction spring 3. During the initial pulling of the pull rope 4, the drive shaft 5 in the starting wheel 2 gradually speeds up under the action of the pull rope 4, and then drives the one-way clutch 6 to rotate. The ratchet in the one-way clutch 6 gradually fits with the outer ring on the flywheel 8, and then drives the flywheel 8 to rotate. When the adsorption magnet 710 on the pull rope 4 drives the fixed magnet 79 on the rack 78, the rack 78 will move forward under the action of the pull rope 4, and then drive the drive gear 77 to rotate. When the drive gear 77 rotates, it synchronously drives the gear ring 71 to rotate. When the gear ring 71 rotates, it will drive the slider 75 to move. The gear ring 71 is rotationally connected to the slider 75, and the limit rod 74 is also rotationally connected to the slider 75. Then when the gear ring 71 rotates relative to the bottom plate 72, at this time the size of the slider 75 does not change, so the slider 75 moves relatively. At this time, it will drive the limit rod 74 to slide outwards along the limit groove 73, and then drive the clamping column 76 to move outwards, thereby expanding the outer ring of the retraction spring 3, and then reducing the force required to pull the pull rope 4, so as to realize the expansion of the outer ring of the retraction spring 3; when the adsorption magnet 710 passes over the fixed magnet 79; it will drive the clamping column 76 to gather towards the center, thereby driving the rack 78 and the gear to reset; after the two are misaligned, that is, the pull rope 4 contacts the fixed magnet 79, and then the fixed magnet 79 can smooth the pull rope 4, thereby reducing the pulling of the edge pull rope 4; when the adsorption magnet 710 is not in contact with the fixed magnet 79, the adsorption magnet 710 is attracted by the fixed magnet 79, and at this time the pull rope 4 moves outwards more smoothly; when the adsorption magnet 710 passes over the fixed magnet 79, at this time the fixed magnet 79 will attract the adsorption magnet 710, thereby reducing the speed of the pull rope 4 being stretched outwards; when the pull rope 4 resets, the initial state stretching is attracted by the mutual attraction of the fixed magnet 79 and the adsorption magnet 710, and the reset speed is fast, and after passing, the speed decreases.

[0053] The above shows and describes the basic principles and beneficial effects of the present invention. At the same time, the present invention is not limited by the above embodiments. Without departing from the effects and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A starting control device for an engine starter, characterized in that: The invention comprises a housing (1), a starting wheel (2), a rewinding spring (3), a pull rope (4), a driving shaft (5), a one-way clutch (6), a limiting mechanism (7) and a flywheel (8); the starting wheel (2) is installed in the housing (1); the pull rope (4) is installed in the starting wheel (2); the driving shaft (5) is installed on the starting wheel (2); the one-way clutch (6) is installed at the other end of the driving shaft (5); the limiting mechanism (7) is installed inside the one-way clutch (6); the flywheel (8) is installed at the output end of the one-way clutch (6); when the pull rope (4) is pulled, the limiting mechanism (7) drives the rewinding spring (3) to increase in diameter first and then decrease in diameter; when the pull rope (4) is pulled, the limiting mechanism (7) drives the one-way clutch (6) to start quickly; the limiting mechanism (7) comprises a gear ring (71), a bottom plate (72), and a limiting groove. The invention relates to a gear ring (71) comprising a gear wheel (73), a limiting rod (74), a slider (75), a clamping column (76), a driving gear (77), a rack (78), a fixed magnet (79), and an adsorption magnet (710). The gear ring (71) is mounted on the starting wheel (2). The bottom plate (72) is mounted on the inner side of the gear ring (71). The limiting groove (73) is provided on the gear ring (71). The limiting rod (74) is slidably connected in the limiting groove (73). The two ends of the slider (75) are respectively mounted on the bottom plate (72) and the gear ring (71). The clamping column (76) is mounted on the limiting rod (74). The driving gear (77) is connected to the gear ring (71). The rack (78) is meshed with the driving gear (77). The fixed magnet (79) is mounted on the back of the rack (78). The adsorption magnet (710) is mounted on the pull rope (4).

2. The starting control device for an engine starter according to claim 1, characterized in that: The one-way clutch (6) comprises a chassis (61), a return spring (62), and a ratchet (63); the chassis (61) is mounted on the drive shaft (5); one end of the return spring (62) is mounted on the chassis (61); the ratchet (63) is mounted on the other end of the return spring (62); a connecting groove (611) is provided on the chassis (61); a push rod (64) is installed between the ratchet (63) and the clamping column (76); the push rod (64) is connected to the clamping column (76); and when the return spring (62) is not stretched, the push rod (64) is in contact with the ratchet (63).

3. The starting control device of an engine starter according to claim 1, characterized in that: A handle (41) is installed at the end of the pull rope (4), and the magnetism of the adsorption magnet (710) gradually increases from the handle (41) toward the center of the rewinding spring (3).

4. The starting control device for an engine starter according to claim 2, characterized in that: There are eight clamping columns (76), which are distributed in a ring array, and a horizontal surface (761) is provided on the clamping columns (76).

5. The starting control device for an engine starter according to claim 3, characterized in that: A limit block (42) is installed on the rewinding spring (3), and a compression spring (43) is installed between the limit block (42) and the rewinding spring (3).

6. The starting control device for an engine starter according to claim 5, characterized in that: The limit block (42) is provided with a smooth surface (421) and a snap-fit ​​surface (422), wherein the smooth surface (421) faces the handle (41) and the snap-fit ​​surface (422) faces the center of the rewinding spring (3).

7. The starting control device for an engine starter according to claim 6, characterized in that: A V-shaped folding plate (423) is installed on the limiting block (42), and the folding plate (423) is installed on one side of the engaging surface (422).

8. The starting control device for an engine starter according to claim 1, characterized in that: A sleeve (81) is installed on the flywheel (8), and a centrifugal block (82) is installed in the sleeve (81).

9. The starting control device for an engine starter according to claim 8, characterized in that: The starter wheel (2) is provided with air inlets (11) in a circular array, and a baffle (12) is provided at the non-drawing rope (4) connection portion of the air inlet (11), and a traction rope connected to the baffle (12) is installed at the end of the centrifugal block (82).

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