CN1497168A - a recoil starter - Google Patents

Abstract

A recoil starter capable of readily staring an engine and reducing the number of components and manufacturing costs thereof and reducing a size and weight thereof. The recoil starter is so constructed that a rotational force accumulated in a cushioning and force accumulating means interposed between a rope reel and a cam is transmitted via the cam to a drive pulley, to thereby start the engine. A ratchet mechanism is provided between the rope reel and the cam so as to uncouple the cam from the rope reel when the rope reel is rotated in an engine starting direction and so as to couple the cam to the rope reel when the rope reel is rotated in a direction opposite to the engine starting direction, thus rotating the cam and the rope reel together in said opposite direction.

Description

A kind of kick-starter

Technical field

The present invention relates to a kind of kick-starter, pulling recoil rope can make cheese rotate, and the rotation that makes cheese as centrifugal clutch, be delivered to the drive pulley that is connected to engine crankshaft, thereby the rotating drive pulley causes engine start by clutch mechanism.

Background technique

Kick-starter rotates cheese by the recoil rope that pulling is wrapped on the cheese, the cam rotation that the rotation of cheese drives is passed through clutch mechanism, as centrifugal clutch, be delivered to rotating component, as be connected to the flywheel magnet or the drive pulley of engine crankshaft, thereby rotating, the bent axle that makes motor pilots engine, in this class starter, there is a kind of kick-starter in known road, its structure comprises damping and the power accumulation mechanism that is arranged between cheese and the cam, can prevent to start the unexpected load fluctuation of pusher side to be delivered to the impact that the cheese side produces, and by accumulation cheese rotatory force in damping and power accumulation mechanism with discharge the rotating force that is accumulated in damping and the power accumulation mechanism pilot engine (visible day disclosure special permission communique No.2001-132591).

In this traditional kick-starter, can be by spurring the cheese that the recoil rope rotates, rotation is delivered to the cam of the drive pulley that connects engine crankshaft by clutch mechanism, hold spring case, be supported in the axle that forms in the housing respectively rotationally as the spring of damping and power accumulation mechanism.In addition, one-way ratchet mechanism interfaced is arranged between cheese and the spring case, can make cheese be delivered to spring case along the rotation of engine start direction.When cheese rotated by pulling recoil rope, spring case rotated together by one-way ratchet mechanism interfaced, and the rotation of cheese is delivered to drive pulley by spring case.When drive pulley stopped operating owing to the starting resistance of motor, the rotatory force of cheese was accumulated in the spring.In addition, overrunning clutch is arranged between axle and the spring case to prevent that spring case from rotating along opposite direction.

In this traditional kick-starter, hold the spring case of damping and power accumulation mechanism or spring, the cheese that the recoil rope twines and the drive pulley that driving force is delivered to engine crankshaft is supported on respectively on the axle in the housing.One-way ratchet mechanism interfaced is arranged between cheese and the spring case, cheese can be delivered to spring case along the rotation of engine start direction, and one-way clutch mechanism is arranged between spring case and the axle, only allows spring case to rotate along the engine start direction.Owing to need a large amount of parts and the complex structure of parts, the cost of production of kick-starter increased; Because especially axial dimension is bigger for the outside dimensions of kick-starter, makes the size of kick-starter and weight be difficult to dwindle.

Summary of the invention

Consider foregoing problem, developed the present invention.

Therefore, the purpose of this invention is to provide a kind of kick-starter, it is equipped with damping and power accumulation mechanism, can easily pilot engine, and not only can reduce the quantity and the manufacture cost of parts, can also reduced in size and weight.

According to the present invention, a kind of kick-starter has been proposed, comprising: housing, have mandrel, can be fixed to motor; Cheese is supported in described mandrel rotationally and is provided with the reel part on its outer circumferential face, and the recoil rope partly twines around reel; Kick spring can be recoiled direction along described recoil rope and actuate described cheese rotationally; Cam can be connected with the drive pulley that is connected to motor by clutch mechanism, and rotation is delivered to drive pulley; With damping and power accumulation mechanism, be arranged between described cheese and the cam, the cheese rotatory force that described damping and power accumulation mechanism accumulate can be delivered to drive pulley by cam, thereby pilots engine; Wherein, ratch mechanism is arranged between described cheese and the cam, when described cheese when the engine start direction is rotated, described ratch mechanism can make described cam and cheese throw off, when the rotatory force of described kick spring accumulation makes described cheese edge rotate with engine start direction opposite direction, described ratch mechanism can be connected to each other described cam and cheese, therefore, described cam and cheese is rotated together in opposite direction.

Clutch mechanism preferably includes the centrifugal clutching spare that is arranged on drive pulley, and centrifugal ratchet is set, described ratchet by centrifugal force can with described cam disengages.

Perhaps, clutch mechanism can comprise one-way clutch spare, and it has the ratchet that is arranged on the described cam, can engage with the anastomosis part on the drive pulley or throw off.

In a preferred embodiment of the invention, damping and power accumulation mechanism comprise helical spring, and an end of spring is fixed to cheese, and the other end is fixed to cam.

In a preferred embodiment of the invention, ratch mechanism comprises rachet, and it has the integrally formed ratchet that can engage with connected member, and connected member forms on the outer peripheral surface of cam; With the operation piece with operating stem, operating stem can be handled described rachet and rotate, and described rachet and operation piece pivotally are supported in the side of the excircle part of cheese respectively; Operating stem forms on operation piece, can by with the inner peripheral surface of the outer wall of housing on the opening slot that forms engage and the pivoted operation piece; When cheese when described engine start direction is rotated, the operating stem of described operation piece engages with an opening slot, thus along the described operation piece of direction pivoted of ratchet and connected member disengagement; When the direction of recoiling along recoil rope when cheese was rotated, the operating stem of operation piece engaged with an opening slot, thus the direction pivoted operation piece that engages with the connected member of cam along the ratchet of rachet.

Ratch mechanism comprises rachet and bias mechanism, rachet is supported in the side of the outer circumferential portion of described cheese swingably, have the ratchet that can engage with the connected member of the outer peripheral surface that is formed at cam, but the described rachet of bias mechanism bias voltage makes rachet contact with the inner peripheral surface of the outer wall of housing and slip thereon; When cheese when the engine start direction is rotated, rachet throws off the connected member of ratchet and cam owing to the friction between the inner peripheral surface of rachet and housing is swung; When cheese was restricted the direction rotation of recoiling along recoiling, rachet made ratchet engage with the connected member of cam owing to the friction between the inner peripheral surface of rachet and housing is swung.

Perhaps, ratch mechanism comprises rachet and biasing spring spare, and rachet pivotally is supported in the side surface of cheese by pivot, and the one end is provided with ratchet, can engage with the connected member that forms on the outer peripheral surface of described cam; Biasing spring spare has circular shape, and its two end part are supported in rachet, and the inner circumferential surface sliding contact of the outer wall of the circular arc portion of maintenance biasing spring spare and housing; When cheese when the engine start direction is rotated because the slip resistance between the inner circumferential surface of the circular arc portion of biasing spring spare and housing, the connected member disengagement of ratchet and cam; When cheese was restricted the direction rotation of recoiling along recoiling, because the slip resistance between the inner circumferential surface of the circular arc portion of biasing spring spare and housing, ratch mechanism was pivoted around pivot, and ratchet is engaged with the connected member of cam.

Description of drawings

By below in conjunction with the detailed introduction of carrying out with reference to the accompanying drawings, to above-mentioned and other purposes, aspect, feature and advantage of the present invention clearer understanding will be arranged, wherein:

Fig. 1 is the sectional view of kick-starter according to an embodiment of the invention;

Fig. 2 is the perspective exploded view of the critical piece structure of kick-starter shown in Figure 1;

Fig. 3 is the front view that shows the clutch mechanism of kick-starter shown in Figure 1;

Fig. 4 is the sectional view along the kick-starter of the cross section A-A of Fig. 1;

Fig. 5 A is the perspective view of ratch mechanism that is used for the kick-starter of Fig. 1, and wherein cheese rotates along the engine start direction; Fig. 5 B is the perspective view that shows ratch mechanism, and wherein cheese rotates along the direction in contrast to the engine start direction;

Fig. 6 is the sectional view that is similar to Fig. 4, has shown that cheese rotates the instant serviceability of back rachet along the engine start direction;

Fig. 7 is the sectional view that is similar to Fig. 6, has shown that cam engages the state that rotatory force is delivered to drive pulley with clutch mechanism;

Fig. 8 is the sectional view that is similar to Fig. 7, after the starting resistance that has shown motor stops cam rotation, makes rotatory force be accumulated in state in damping and the power accumulation mechanism because cheese rotates;

Fig. 9 is the sectional view that is similar to Fig. 4, has shown that cheese rotates the instant serviceability of back ratch mechanism in opposite direction;

Figure 10 is the sectional view that is similar to Fig. 4, has shown the state that rotates together in opposite direction by rachet cheese and cam;

Figure 11 is the sectional view that is similar to Figure 10, has shown because cheese rotates the state that rachet is thrown off cheese and cam along the engine start direction once more;

Figure 12 is the perspective view of ratch mechanism according to another embodiment of the present invention;

Figure 13 is the front elevation that shows the ratch mechanism among Figure 12;

Figure 14 A is the perspective view of the ratch mechanism of Figure 12, and wherein cheese rotates along the engine start direction; Figure 14 B is the perspective view that shows ratch mechanism, and wherein cheese rotates along the direction in contrast to the engine start direction;

Figure 15 is the perspective view of ratch mechanism in accordance with another embodiment of the present invention;

Figure 16 is the front elevation that shows the ratch mechanism among Figure 15;

Figure 17 A is the perspective view of the ratch mechanism of Figure 15, and wherein cheese rotates along the engine start direction; Figure 17 B is the perspective view that shows ratch mechanism, and wherein cheese rotates along the direction in contrast to the engine start direction;

Figure 18 is the perspective view of another embodiment's the ratch mechanism according to the present invention;

Figure 19 is the front elevation that shows the ratch mechanism among Figure 18;

Figure 20 A is the perspective view of the ratch mechanism of Figure 18, and wherein cheese rotates along the engine start direction; Figure 20 B is the perspective view that shows ratch mechanism, and wherein cheese rotates along the direction in contrast to the engine start direction; With

Figure 21 is the sectional view according to the embodiment's of also having of the present invention ratch mechanism.

Embodiment

Introduce embodiments of the invention below with reference to the accompanying drawings.

Referring to figs. 1 to Figure 11, wherein shown embodiment according to kick-starter of the present invention.Embodiment's illustrated in figures 1 and 2 kick-starter comprises housing 1, and its inside has held the critical piece of kick-starter, and can be installed to the side surface portion of motor and covering engine.On the inner surface of housing 1, be provided with mandrel 2 with respect to the engine crankshaft (not shown).The cheese 4 that twines recoil rope 3 is pivotally connected to mandrel 2.An end that is centered around the recoil rope 3 of the reel part 4a that forms on cheese 4 outer circumferential faces is fixed to cheese 4, and the other end is pulled out to the outside of housing 1, just can drive cheese 4 by the other end that spurs recoil rope 3 like this it is rotated around mandrel 2.

Kick spring 5 is arranged between the outer circumferential face of base portion of the side surface of cheese 4 and mandrel 2, and wherein mandrel 2 forms on the internal surface of housing 1.Kick spring 5 is arranged to, and after pulling recoil rope 3 rotates cheese 4 along the engine start direction reel 4a make recoil rope unwinding, can will recoil again to restrict and be wound on the cheese 4 by rotating cheese 4 in opposite direction.One end of kick spring 5 is fixed to the mandrel 2 of inner peripheral surface side, and the other end is fixed to the cheese of outer peripheral surface side.When passing through pulling recoil rope 3 along engine start direction rotation cheese, rotating force is accumulated in the kick spring 5.When recoil rope 3 discharged, cheese 4 rotated along opposite direction by the rotating force that is accumulated in the kick spring 5, and the recoil rope 3 that is retracted to housing 1 outside is rewinded on the cheese 4.

Cam 9 is rotatably fixed to the distal side of mandrel 2.Cam 9 has the cam member 8 that forms on outer peripheral surface, it can engage with the clutch mechanism 7 that is arranged on drive pulley 6, and drive pulley is connected to the bent axle of motor.Cam 9 and cheese 4 are supported in mandrel 2 together rotationally by the screw 10 that is threaded onto mandrel 2 ends.As shown in figs. 1 and 3, the clutch mechanism 7 that is arranged on drive pulley 6 is for having the centrifugal clutching mechanism of centrifugal ratchet 7a, and centrifugal ratchet is rotatable, and is subjected to the bias voltage of the cam member 8 that independent spring (not shown) forms on cam 9.When cam 9 when the engine start direction is rotated, centrifugal ratchet 7a engages with cam member 8, thereby drive pulley 6 is rotated along the engine start direction.When engine start rear driving pulley when bent axle rotates owing to produced centrifugal force in contrast to spring bias, centrifugal ratchet 7a rotates and moves and throw off with cam member 8, has prevented to start the rotation of pusher side to be delivered to the kick-starter side.

As shown in Figure 1, be formed with recess part 11 on the opposite side surface of cheese 4.Recess part 11 acceptances accumulation helical spring 12, it has constituted damping and power accumulation mechanism.Power accumulation spring 12 is arranged in spring case 12, and spring case 12 is contained in recess part 11 and is fixed on the cheese 4.One end of power accumulation spring 12 is fixed to the outer surface side of spring case 13, and the other end engages with the cam inner surface side.Therefore, cheese 4 and cam 9 couple together by power accumulation spring 12, make the rotation of cheese 4 accumulate spring 12 by power and are delivered to cam 9.Because the starting resistance of motor has stoped cam 9 to rotate, and produces relative rotation between cam 9 and the cheese 4, the rotatory force of cheese 4 is accumulated in the power accumulation spring 12.

As illustrated in fig. 1 and 2, ratch mechanism 14 is arranged between cam 9 and the cheese 4, when cheese 4 when the engine start direction is rotated, ratch mechanism 14 is thrown off with cam.When rotated in the opposite direction with engine start side on cheese 4 edges, ratch mechanism 14 engaged with cam 9, thereby made cam 9 and cheese 4 together along rotating in the opposite direction with engine start side.Ratch mechanism 14 comprise by pivot 15 pivotally be fixed on the side surface of close outer annulus edge of cheese 4 rotating rachet 16 and by near the pivotally fixing rotating operation piece 18 of the pivots 17 the pivot 15.When any engages in the ratchet 19 that forms on the rachet 16 and a plurality of engaging surfaces 21, cam 9 and cheese 4 can rotate in opposite direction together, the engaging surface 21 that wherein forms on the outer circumferential face of connected member 20 is outstanding from the outer peripheral surface of cam 9, and in the face of the engine start direction.

Shown in Fig. 5 A, elastic component 22 and rachet 16 whole formation can radially be given prominence to, and elastic component 22 is actuated rachet 16 by rotation, and permission ratchet 19 engages with the engaging surface 21 of the connected member 20 of cam 9 or throws off.Actuator 23 and operating stem 24 be whole formation on operation piece 18, and be radially outstanding.Actuator 23 engages with elastic component 22 rachet 19 rotations are moved.Operating stem 24 rotatable move operation spares 18.As shown in Figure 4, the operating stem 24 of operation piece 18 is arranged to and can be slided on the inner peripheral surface 25 of the outer wall 1a of housing 1.Operating stem 24 can engage with in a plurality of opening slots 26 that along the circumferential direction are arranged on equably on the inner peripheral surface 25 each, to rotate move operation spare 18.

When cheese 4 when the starting direction of motor rotates, the operating stem 24 of operation piece 18 is done rotation and is moved, sense of rotation along cheese 4 recedes, therefore make the elastic component 22 of the radially inwardly mobile rachet 16 of actuator 23 of operation piece 18, consequently, ratchet 19 breaks away from the connected member 20 of cam 9, shown in the solid line among Fig. 4 and shown in Fig. 5 A.At this moment, ratchet 19 contacts with the stop pin 27 that is arranged on ratchet 19 rear sides, has limited the rotational angle of rachet 16.When rotate in the opposite direction with engine start side on cheese 4 edges, the operating stem 24 of operation piece 18 engages with an opening slot 26 to do to rotate and moves, sense of rotation along cheese 4 recedes, so actuator 23 radially outwards that make operation piece 18 move the elastic component 22 of rachet 16, consequently, ratchet 19 engages with an engaging surface 21 of the connected member 20 of cam 9, shown in the dotted line among Fig. 4 and shown in Fig. 5 B.

Will be with reference to figure 6 to 11, the operation of the kick-starter in the illustrated embodiment is introduced.When pulling recoil rope 3 makes cheese 11 when the engine start direction is rotated, the operating stem 24 of operation piece 18 is gone up an opening slot 26 that forms with the outer wall 1a of housing 1 and is engaged, thereby operating stem 24 in rotational direction recedes, make the actuator 23 of operation piece 18 radially move inward the elastic component 22 of rachet, the connected member 20 that causes ratchet 19 disengaging cams 9, as shown in Figure 6.When cheese 4 rotates, by power accumulation spring 12 cam 9 is rotated, the cam member 8 of cam 9 is engaged with centrifugal ratchet 7a, drive pulley 6 is rotated, and the bent axle of the motor that links to each other with drive pulley 6 is rotated, as shown in Figure 7.

When the rotational load of drive pulley 6 became big owing to the starting resistance of motor, restriction drive pulley 6 was rotated, and the cam member 8 on it is restricted with the rotation of the cam 9 that centrifugal ratchet 7a engages.But, rotating although limited cam 9, cheese 4 also is rotated further, and as Fig. 8 institute, power accumulation spring 12 is wrapped in the rotatory force of having accumulated cheese 4 in the power accumulation spring 12.The impact that the unexpected load fluctuation of motor causes is cushioned by power accumulation spring 12.In this process, the operating stem 24 of operation piece 18 rotates with cheese 4, while slides on the internal surface 25 of the outer wall 1a of housing 1, and the ratchet 19 of rachet 16 keeps contacting with stop pin 27, engage with the actuator 23 of operation piece 18 by elastic component 22, throw off with the connected member 20 of cam 9.

Under this condition when no longer drawing recoil rope 3 owing to be accumulated in the rotating force of kick spring 5, cheese 4 causes recoil rope 3 to be wrapped in again on the cheese 4 along rotating in the opposite direction with engine start side.When cheese 4 rotates in opposite direction, as shown in Figure 9, the operating stem 24 of operation piece 18 engages with an opening slot 26 that forms on the outer wall 1a of housing 1, operating stem 24 is receded along the sense of rotation of cheese 4, rachet 16 is by the rotation inhour pivoted of operation piece 18 thus, ratchet 19 is engaged with an engaging surface 21 of the connected member 20 of cam 9, and consequently cam 9 and cheese 4 rotate together in opposite direction.At this moment permission power accumulation spring 12 rotates in opposite direction with cheese 4 and cam 9, and rotatory force is accumulated in the power accumulation spring 12.As shown in figure 10, because the inclined-plane 8a that the rear side of cam member 8 forms, the centrifugal clutch 7 that engages with cam 9 allows cam 9 to rotate in opposite direction.Therefore, can twine recoil rope 3 again to cheese 4, keep rotatory force to be accumulated in power accumulation spring 12 simultaneously.

When cheese 14 by pulling recoil rope 3 when the engine start direction is rotated once more, by rotatory force accumulation power accumulation spring 12 is wherein arranged, cam 9 rotates, the cam member 8 of cam 9 is engaged with centrifugal ratchet 7a, once more the starting resistance of motor is delivered to cam 9 thus, cause cam 9 not rotate, as shown in figure 11.The result that cheese 4 rotates is, the operating stem 24 of operation piece 18 engages with an opening slot 26, and operation piece 18 is rotated, and makes it in rotational direction to recede, make actuator 23 rotate the elastic component 22 of rachet 16 thus, cause the ratchet 19 and the connected member 20 of cam 9 to be thrown off.When by pulling recoil rope 3 cheese 4 further being rotated, rotatory force further is accumulated in the power accumulation spring 12.When the rotatory force in being accumulated in power accumulation spring 12 surpasses the starting resistance of motor, the rotatory force of cheese 4 and the rotatory force that is accumulated in the power accumulation spring 12 discharge, make synthetic rotatory force be delivered to drive pulley 6 by cam 9, turning crankshaft is piloted engine suddenly.

Referring to figs. 12 to 14B, shown another embodiment among the figure according to kick-starter of the present invention.In the kick-starter of illustrated embodiment, ratch mechanism 30 is arranged between cheese 4 and the cam 9, and it comprises the rachet 32 that pivotally is fixed to pivot 31, and wherein pivot forms on the side surface of the excircle part of cheese 4; Pivotally be fixed to the operation piece 34 of pivot 33, wherein pivot 33 is near pivot 31.Engage with an engaging surface 21 of the connected member 20 that forms on the outer peripheral surface of rachet 32 integrally formed ratchets 35 and cam 9, cam 9 and cheese 4 are rotated along the direction opposite with the starting direction of motor together.

Rachet 32 is subjected to the bias voltage of spring 36 along the direction that ratchet 35 is contacted with the connected member 20 of cam 9 rotationally.In addition, operating stem 37 is and rachet 32 whole formation, is pivoted so that handle rachet 32.Actuator 38 and operating stem 39 integral body form on operation piece 34, and actuator 38 can rotate rachet 32 by engaging with operating stem 37, and operating stem 39 slides on the inner peripheral surface 25 of the outer wall 1a of housing 1 simultaneously.Other structure is identical with the embodiment of front.

In this kick-starter, when cheese 4 when the starting direction of motor rotates, operating stem 39 is gone up an opening slot 26 that forms with outer wall 1a and is engaged, thereby operating stem 39 recedes along the sense of rotation of cheese 4, make operation piece 34 pivoted, the actuator 38 of operation piece 34 is engaged with the operating stem 37 of rachet 32, and, represent with shown in Figure 14 A as the solid line among Figure 13 along making ratchet 35 break away from the direction pivoted rachet 32 of the connected member 20 of cam 9.When rotate in the opposite direction with engine start side on cheese 4 edges, operating stem 39 is gone up an opening slot 26 that forms with outer wall 1a and is engaged, pivoted operation piece 34, thus, the actuator 38 of operation piece 34 breaks away from the operating stem of rachet 32 37, the biasing force that makes rachet 32 be subjected to spring 36 is pivoted, action direction is the direction that ratchet 35 engages with the connected member 20 of cam 9, the result is that cam 9 and cheese 4 rotate along opposite direction together, represents with shown in Figure 14 B as the dotted line among Figure 13.

To 17B, shown another embodiment with reference to Figure 15 among the figure according to kick-starter of the present invention.In the kick-starter of illustrated embodiment, ratch mechanism 40 is arranged between cheese 4 and the cam 9, and it comprises the rachet 42 that is supported in pivot 41 swingably, and wherein pivot forms on the side surface of the excircle part of cheese 4.An engaging surface 21 of the connected member 20 that forms on the outer peripheral surface of the ratchet 43 that forms on the rachet 42 and cam 9 engages, makes the edge direction rotation opposite with the starting direction of motor together of cam 9 and cheese 4.

Shown in Figure 17 A, on rachet 42, be provided with slotted hole 44.Pivot 41 loosely fits into and supports rachet 42 in the hole 44, makes rachet 42 move and to rotate around pivot 41 by the circumference along cheese 4 in hole 44.In addition, the opposed end on the inside circumference of rachet 42 is subjected to as the sheet spring 45 of bias mechanism compressing and the bias voltage towards the inner circumferential surface 25 of the outer wall 1a of housing 1.The biasing force of sheet spring 45 makes an outer end edges of rachet 42 contact with the inner circumferential surface 25 of the outer wall 1a of housing 1 and slip thereon along circle edge.Other structure is identical with the embodiment of front.

In illustrated this kick-starter, when cheese 4 when the starting direction of motor rotates, owing to the surface friction drag on the outer end that acts on the rachet 42 that contacts with the inner circumferential surface 25 of outer wall 1a, rachet 42 moves backward along the sense of rotation of cheese, because the pressure effect of sheet spring 45, ratchet 43 is swung along the direction that makes ratchet 43 break away from the connected member 20 of cam 9, shown in the solid line among Figure 16 and shown in Figure 17 A.When rotate in the opposite direction with engine start side on cheese 4 edges, owing to the surface friction drag on the outer end that acts on the rachet that contacts with the inner circumferential surface 25 of outer wall 1a, rachet 42 in rotational direction moves backward, the pressure effect of sheet spring 45 makes the direction swing of ratchet 43 along the connected member 20 of ratchet 43 engagement cam 9, shown in the dotted line among Figure 16 and Figure 17 B.The result is that cam 9 and cheese 4 rotate along opposite direction together.

With reference now to Figure 18, to 20B, shown another embodiment among the figure according to kick-starter of the present invention.In the kick-starter of illustrated embodiment, ratch mechanism 50 is arranged between cheese 4 and the cam 9, and it comprises the rachet 52 that is supported in pivot 51 swingably, and wherein pivot forms on the side surface of the excircle part of cheese 4.An engaging surface 21 of the connected member 20 that forms on the outer peripheral surface of the ratchet 53 that forms on the far-end of rachet 52 and cam 9 engages, and cam 9 and cheese 4 are rotated along the direction opposite with the starting direction of motor together.

Ratch mechanism 50 also is provided with biasing spring 54, and this spring forms by the straight line elastic material is bent to annular arcuation.Biasing spring 54 is supported in rachet 52, and its opposed end 54b and 54c are inserted in the hole 52a and the 52a that are arranged in pivot 51 both sides that forms on the rachet 52 respectively, and its medial end portions is by forming in the two ends of curved portion 54a vertical curve.The rear side of the curved portion 54a of biasing spring 54 is pressed onto the inner circumferential surface 25 of the outer wall 1a of housing 1, and can slide on inner circumferential surface 25.When the curved portion 54a of biasing spring 54 was out of shape owing to the slip resistance between the inner circumferential surface 25 of curved portion 54a and outer wall 1a, rachet 52 rotated around pivot 51 by end 54b and 54c.

More specifically, when the starting direction that makes recoil cheese 4 along motor by pulling recoil rope rotates, shown in the solid arrow among Figure 19, the curved portion 54a of the biasing spring 54 that rotates with cheese 4 slides on the inner peripheral surface 25 of housing 1, therefore, because slip resistance, curved portion 54a is out of shape backward along the sense of rotation of cheese 4, end 54b radially moves inward, and end 54c radial and outward deformation.Rachet 52 is rotated around pivot 51, cause the ratchet 53 and the connected member 20 of cam 9 to break away from.When recoil cheese 4 rotates along the direction of recoil rope 3 recoils, shown in the arrow that dotted line among Figure 19 is represented, the end 54b radially outward of biasing spring 54 moves, and end 54c radially moves inward, so rachet 52 pivoted, ratchet 53 is engaged with an engaging surface 21 of the connected member 20 of cam 9, cause cam 9 and cheese 4 to rotate together.The structure of other parts and front

Embodiment is identical.

In illustrated embodiment, biasing spring 54 is to be formed by the straight line elastic material.Perhaps, biasing spring can be formed by laminar elastic component bending, and two ends of elastic component are fixed on the rachet 52, is positioned at the both sides of the rotation axis of pivot 51, makes it to have as the same action of illustrated embodiment.

With reference now to Figure 21,, shown another embodiment among the figure according to kick-starter of the present invention.Among the embodiment of Jie Shaoing, the structure of clutch mechanism 7 makes it come work by the centrifugal force that drive pulley 6 is rotated generation in the above; And be designed to and can the rotation of cam 9 be delivered to motor by centrifugal ratchet 7a, centrifugal ratchet 7a is arranged on the drive pulley 6 that is connected with the bent axle of motor, can engage with the cam member 8 that forms on the cam 9.In the embodiment shown in Figure 21, clutch mechanism 7 comprises one-way clutch spare 60, and the ratchet 61 that it can be by being arranged on cam 9 is delivered to the rotation of cam 9 and starts pusher side.Ratchet 61 pivotally is arranged on the cam 9, can engage with the anastomosis part 62 on the inner peripheral surface of the drive pulley 6 that is connected to motor or break away from.Other structure divisions are identical with the embodiment of front.

In overrunning clutch 60, ratchet 61 has the protuberance 63 that forms at its top surface, and an end of ratchet is fixed on cam 9 and can rotates.Ratchet guide 65 is formed with guide groove 64 on its surface with respect to ratchet 61, be installed on the dish axle 2 also can rotate.Ratchet guide 65 is installed around the column part 10a elasticity of the screw rod 10 that is connected to dish axle 2, and Yu Ding rotational resistance can be applied to the ratchet guide 65 of relative screw rod 10 like this.The protuberance 63 of ratchet 61 and guide groove 64 loose fits of ratchet guide 65.When cam rotation, ratchet 61 rotates with cam 9, so the protuberance 63 of ratchet 61 engages with the guide groove 64 of ratchet guide 65, rotational resistance is applied to ratchet guide 65, ratchet 61 rotates around an end thus, make the distal portions of ratchet 61 outwards outstanding, and engage, cause cam 9 to be delivered to drive pulley 6 along the rotation of engine start direction with the anastomosis part 62 of drive pulley 6.When cam 9 rotated in opposite direction, the protuberance 63 of ratchet 61 engaged with guide groove 64, made the radially inwardly withdrawal of distal portions of ratchet 61, and transmission causes stopping operating.

Kick-starter among each embodiment who introduces above can easily be piloted engine and feasible impact can not be delivered to recoil rope 3, and this is that accumulation spring 12 has produced damping and power cumulative function because pulling recoil rope 3 long distances are exerted all one's strength.In addition, by the pulling of short distance repeatedly recoil rope 3, rotatory force can be accumulated in the power accumulation spring 12.Therefore, the position that power is applied on the recoil rope 3 can be regulated, and therefore in conjunction with cushioning effect, helps with less surge start motor.

According to the present invention, can be when piloting engine, the damping and the power cumulative function that produce by the long distance of pulling recoil rope absorb impact.Can also be when piloting engine, by repeatedly short distance pulling recoil rope generation damping and power cumulative function absorb impact effectively.Therefore, the distance of recoil rope pulling and power are applied to the position of recoil rope and can regulate, thereby in conjunction with cushioning effect, can less impact easily pilot engine.

In addition,, between cheese and cam, ratch mechanism is set according to the present invention, when cheese when the engine start direction is rotated, ratch mechanism can with cam disengages; When cheese when opposite direction is rotated, ratch mechanism can with cam engagement, make cam and cheese rotate together.Such structure unlike the prior art, but do not require the rotating component of the independent rotation as spring case, do not require the one-way clutch mechanism that only allows rotating component to rotate between cheese and cam along a direction yet, the manufacture cost that can realize kick-starter descends and reduced in size and weight.

In one embodiment of the invention, the clutch mechanism that is arranged between drive pulley and the cam comprises the centrifugal clutching mechanism that is arranged on the drive pulley, which is provided with centrifugal ratchet.Therefore, when the engine start crankshaft rotating, by the drive pulley that is connected, motor is driving centrifugal ratchet rotation, and centrifugal force makes centrifugal ratchet and cam disengages, has prevented to start the rotation of pusher side to be delivered to cam and cheese side thus.

In addition, in one embodiment of the invention, the clutch mechanism that is arranged between drive pulley and the cam comprises overrunning clutch, and overrunning clutch comprises the ratchet that is arranged on the cam, can engage with the anastomosis part that forms on the drive pulley or break away from.Therefore, when pulling recoil rope makes cam when the engine start direction is rotated, rotate transmission and carry out reliably; When after the engine start and cam when rotating in opposite direction, the transmission of rotating between drive pulley and the cam obtains certain stopping, thereby has prevented to start the rotation of pusher side to be delivered to cam and rope sheave side.

In addition, in one embodiment of the invention, damping and power accumulation mechanism comprise helical spring, the one end is fixed on the cheese, the other end is fixed to cam, makes its cushioning ability set very highly, and allowing motor to have very high shock-absorbing function can start reposefully.The power accumulation capability also can be provided with very highly, can be accumulated to enough desired rotatory forces of piloting engine.

In addition, in one embodiment of the invention, the ratch mechanism that is arranged between cheese and the cam comprises the rachet of the excircle side partly that pivotally is supported in cheese and can handle the operation piece that rachet rotates, wherein on operation piece, be formed with operating stem, can by with the inner peripheral surface of the outer wall of housing on an opening slot forming engage the pivoted operation piece.Such structure, when cheese when the engine start direction is rotated or is rotated in opposite direction, allow the ratchet of rachet to engage reliably or break away from the connected member of cam, produce stable operation.

In addition, in one embodiment of the invention, ratch mechanism comprises the rachet on the side surface of the excircle part that is supported in cheese swingably, and the pressure that rachet is subjected to bias mechanism can contact and slip thereon with the inner peripheral surface of the outer wall of housing.Such structure allows connected member positive engagement or the disengaging of the ratchet of rachet with stable manner and cam, and this depends on the sense of rotation of cheese, and embodiment introduces as the front.

In addition, in one embodiment of the invention, ratch mechanism comprises the rachet on the side surface that pivotally is supported in cheese, and its end is provided with ratchet, can engage with the connected member that forms on the cam outer peripheral surface; And biasing spring, it has curved portion, two end portion supports are in rachet, the inner circumferential surface sliding contact of the outer wall of the curved portion of biasing spring maintenance simultaneously and housing, slip resistance between curved portion and the inner peripheral surface makes the biasing spring distortion, and the two ends of biasing spring make rachet be pivoted around pivot thus.This structure allows connected member positive engagement or the disengaging of the ratchet of rachet with stable manner and cam, and this depends on the sense of rotation of cheese, and embodiment introduces as the front.

Although illustrative and presently preferred embodiment of the present invention is described in detail, should be appreciated that notion of the present invention can implement and use by different way, so claims should comprise these variations outside the prior art scope.

Claims (10)

1. A recoil starter comprising: a housing (1), with a mandrel (2), fixable to the engine; A rope reel (4), rotatably supported on the mandrel (2) and provided with a reel part (4a) on the outer peripheral surface, around which the recoil rope (3) is wound; a recoil spring (5), which can rotatably actuate the rope reel (4) along the rewinding direction of the recoil rope (3); a cam (9) connectable via a clutch mechanism (7) to a drive pulley (6) connected to the engine to transmit rotation to said drive pulley (6); and A shock absorbing and force accumulating mechanism (12), arranged between the rope reel (4) and the cam (9), the rotational force of the rope reel (4) accumulated by the shock absorbing and force accumulating mechanism It can be transmitted to the drive pulley (6) through the cam (9) to start the engine; it is characterized in that: The ratchet mechanism (14, 30, 40, 50) is arranged between the rope reel (4) and the cam (9), and when the rope reel (4) rotates along the engine starting direction, the ratchet Mechanisms (14, 30, 40, 50) can disengage the cam (9) from the rope reel (4), when the accumulated rotational force of the recoil spring (5) makes the rope reel (4) The ratchet mechanism (14, 30, 40, 50) interconnects the cam (9) and the rope reel (4) when turned in the opposite direction to the engine starting direction, thus making the cam (9) rotates in the opposite direction together with the rope reel (4). 2. The recoil starter according to claim 1, characterized in that, the clutch mechanism (7) includes a centrifugal clutch set on the drive pulley (6), and a centrifugal pawl (7a ), the pawl can be disengaged from the cam (9) by centrifugal force. 3. The recoil starter according to claim 1, characterized in that, the clutch mechanism (7) comprises a one-way clutch (60) with a pawl (61) arranged on the cam (9) ), which can be engaged or disengaged from the engagement portion formed on the drive pulley (6). 4. Recoil starter according to any one of the preceding claims 1 to 3, characterized in that the shock absorbing and force accumulation mechanism (12) comprises a helical spring, one end of which is fixed to the cord The other end of the disc (4) is fixed to the cam (9). 5. The recoil starter according to any one of the preceding claims 1 to 3, characterized in that the ratchet mechanism (14, 30) comprises a ratchet member (16, 32) with a an integrally formed pawl (19, 35) engaged by an engaging member (20) formed on the outer circumference of said cam (9); and an operating member (18, 34), said The operating member is provided with an operating rod (24, 39), and the operating rod can manipulate the rotation of the ratchet member (16, 32), and the ratchet member (16, 32) and the operating member (18, 34) respectively pivotally supported on the side of the outer circumference of the rope drum (4); The operating rod (24, 39) is formed on the operating member (18, 34), and passes through the opening groove (26) formed on the inner peripheral surface (25) of the outer wall (1a) of the housing (1). ) is engaged to pivotally rotate the operating member (18, 34); When the rope reel (4) rotates in the direction of starting the engine, the operating lever (24, 39) of the operating member (18, 34) engages with one of the open slots (26), thereby moving along the pivoting the operating member (18, 34) in a direction in which the pawl (19, 35) is disengaged from the engagement member (20); and When the rope reel (4) rotates along the rewinding direction of the anti-Okinawa (3), the operating rod (24, 39) of the operating member (18, 34) and one of the opening slots (26) ) to pivot the operating member in the direction in which the pawl (19, 35) of the ratchet member (16, 32) engages with the engagement member (20) of the cam (9) (18, 34). 6. The recoil starter according to claim 4, characterized in that, the ratchet mechanism (14, 30) comprises a ratchet member (16, 32) and an operating member (18, 34), and the ratchet with integrally formed detents (19, 35) engageable with an engaging member (20) formed on the outer circumference of said cam (9), said operating member having an operating The lever (24, 39) can manipulate the ratchet member (16, 32) to rotate, and the ratchet member (16, 32) and the operating member (18, 34) are respectively pivotably supported on the The side of the outer circumference portion of the rope reel (4); The operating rod (24, 39) is formed on the operating member (18, 34) through an open slot ( 26) Engage to pivotally rotate said operating member (18, 34); When the rope reel (4) rotates in the direction of starting the engine, the operating lever (24, 39) of the operating member (18, 34) engages with one of the open slots (26), thereby moving along the pivoting the operating member (18, 34) in a direction in which the pawl (19, 35) is disengaged from the engagement member (20); and When the rope reel (4) rotates along the rewinding direction of the anti-Okinawa (3), the operating rod (24, 39) of the operating member (18, 34) and one of the opening slots (26) ) engagement, thereby pivoting the operating member in the direction in which the pawl (19.35) of the ratchet member (16, 32) engages with the engagement member (20) of the cam (9) (18, 34). 7. The recoil starter according to any one of claims 1 to 3, characterized in that said ratchet mechanism (40) comprises a ratchet member (42) and a biasing mechanism (22), said The ratchet part is swingably supported on the side of the outer peripheral surface portion of the rope reel (4), and has a pawl ( 43), the biasing mechanism (22) can bias the ratchet member (42), so that the ratchet member (42) and the inner peripheral surface of the outer wall (1a) of the housing (1) ( 25) touch and slide on it; When the rope reel (4) rotates along the engine starting direction, the ratchet member (42) is ) to swing by friction between the pawl (43) and the engagement member (20) of the cam (9); and When the rope reel (4) rotates along the rewinding direction of the anti-Okinawa (3), the ratchet (42) due to the contact between the ratchet (42) and the housing (1) The friction between the inner peripheral surfaces (25) causes the ratchet (43) to engage with the engagement member (20) of the cam (9). 8. The recoil starter according to claim 4, characterized in that, the ratchet mechanism (40) comprises a ratchet member (42) and a biasing mechanism (22), and the ratchet member is swingably supported On the side of the outer peripheral surface of the rope reel (4), there is a pawl (43) that can be engaged with the engagement piece (20) formed on the outer peripheral surface of the cam (9), and the bias The mechanism (22) can bias the ratchet member (42), so that the ratchet member (42) contacts and rests on the inner peripheral surface (25) of the outer wall (1a) of the housing (1). slide; When the rope reel (4) rotates along the engine starting direction, the ratchet member (42) is ) to swing by friction between the pawl (43) and the engagement member (20) of the cam (9); and When the rope reel (4) rotates along the rewinding direction of the anti-Okinawa (3), the ratchet (42) due to the contact between the ratchet (42) and the housing (1) The friction between the inner peripheral surfaces (25) causes the ratchet (43) to engage with the engagement member (20) of the cam (9). 9. The recoil starter according to any one of the preceding claims 1 to 3, characterized in that the ratchet mechanism (50) comprises a ratchet member (52) and a biasing spring member (54), the The ratchet part is pivotably supported on the side surface of the rope reel (4) through a pivot shaft (51), and a ratchet (53) is provided at one end thereof, which can be connected to the outer peripheral surface of the cam (9) The engagement member (20) formed on the upper part is engaged; the bias spring member has an arc shape, and both ends (54b, 54c) are supported on the ratchet member (52), and hold the bias spring member The arc portion (54a) of (54) is in sliding contact with the inner circumferential surface (25) of the outer wall (1a) of the housing (1); When the rope reel (4) rotates in the direction of starting the engine, due to the arc portion (54a) of the biasing spring (54) and the inner peripheral surface of the housing (1) (25), said pawl (53) is disengaged from said engagement member (20) of said cam (9); and When the rope reel (4) rotates along the rewinding direction of the recoil rope (3), due to the arc portion (54a) of the biasing spring (54) and the housing (1) The sliding resistance between the inner circumferential surface (25) of the ratchet mechanism (52) pivots around the pivot shaft (51), so that the pawl (53) and the cam (9 ) of the joint (20) joint. 10. The recoil starter according to claim 4, characterized in that, the ratchet mechanism (50) comprises a ratchet member (52) and a biasing spring member (54), the ratchet member passes through a pivot (51) Pivotably supported on the side surface of the rope reel (4), one end of which is provided with a pawl (53), which can be connected with the engaging member formed on the outer circumferential surface of the cam (9) (20) engagement; the biasing spring member has a circular arc shape, and its two ends (54b, 54c) are supported on the ratchet member (52), and maintain the circular arc portion of the biasing spring member (54) (54a) is in sliding contact with the inner circumferential surface (25) of the outer wall (1a) of said casing (1); When the rope reel (4) rotates in the direction of starting the engine, due to the arc portion (54a) of the biasing spring (54) and the inner peripheral surface of the housing (1) (25), said pawl (53) is disengaged from said engagement member (20) of said cam (9); and When the rope reel (4) rotates along the rewinding direction of the recoil rope (3), due to the arc portion (54a) of the biasing spring (54) and the housing (1) The sliding resistance between the inner peripheral surface (25) of the said ratchet (52) pivots around the pivot (51), so that the pawl (53) and the cam (9 ) of the joint (20) joint.

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