CN1472437A

CN1472437A - Power accumulating starter

Info

Publication number: CN1472437A
Application number: CNA031020895A
Authority: CN
Inventors: 村上真之
Original assignee: Showa Machine Ind Co Ltd
Current assignee: Showa Machine Ind Co Ltd
Priority date: 2002-06-21
Filing date: 2003-01-29
Publication date: 2004-02-04
Anticipated expiration: 2023-01-29
Also published as: CN1250872C; JP2004027880A

Abstract

To avoid problems wherein a driving hook is removed to damage a starter device or restarting is made to be impossible, by improving an accumulator starter device interposing a shock-absorbing/accumulating mechanism portion in a midpoint of a drive line between a drive portion and a follower portion.The accumulator starter device interposes the shock-absorbing/accumulating mechanism portion in the midpoint of the drive line between the drive portion and the follower portion. A ratchet mechanism portion having the driving hook and a follower protrusion as the drive line between an accumulating spring mechanism portion and the follower portion is provided so as to dispose the driving hook of the ratchet mechanism portion in the accumulating spring mechanism portion side and dispose the follower protrusion of the ratchet mechanism portion in the follower portion side. An engaging/disengaging mechanism portion such as a retainer device with friction is provided on the ratchet mechanism, which shows a state that the driving hook is projected out to engage with the follower protrusion in the follower portion side at the time of rope pulling out operation, and shows a state that the driving hook is disengaged to be stored at the time of rope returning operation. (C)2004,JPO.

Description

The power accumulating starter device

Technical field

The present invention relates to that the change of the tractive force of resilience rope can successfully draw less, the power accumulating starter device of the explosive motor that starting performance is good, the improvement of just between drive portion and follower, clamp buffering, holding the power accumulating starter device of force mechanisms.

Background technique

Always, provide following constitutor as this power accumulating starter device.

Be between the power-transmission system between drive portion and follower, to clamp buffering, hold the power accumulating starter device of force mechanisms portion, buffering, holding force mechanisms portion is that driving and the follower by this drive portion becomes the power of the holding spring mechanism portion that additional force ground drives follower while cushioning the power of holding and making this hold power in the driving process of drive portion, follower has and has in this follower that to make driving side and slave end from prestart be the centrifugal pawl clutch of the centrifugal pawl of jointing state, the joint of this centrifugal pawl is removed by the centrifugal force of the rotation generation of this slave end, the form of rotating with holding that power spring mechanism portion directly is connected and with drive portion via centrifugal pawl clutch when the driving that drive portion produces, main points are to adopt the form of centrifugal pawl clutch.

Power accumulating starter device at the centrifugal pawl clutch of usefulness described in the aforementioned technology always, though be that unresolved following problem can be successfully drawn and the good such advantage of startability and desirable person in change with tractive force of resilience rope less.

1. the centrifugal pawl that is arranged on the centrifugal pawl clutch of slave end becomes in the rotation (operation) at motor the therewith formation of rotation, stands to move the vibration of generation etc. for a long time, and this is the reason that unexpectedly causes the disengaging accident sometimes.

2. the centrifugal pawl of the centrifugal pawl clutch of above-mentioned disengaging makes the starter equivalent damage, exists to restart so fatal problem.

Though 3. even the drag rope motor is also inoperative sometimes, centrifugal pawl must contact with the joining portion of drive portion one side and sends allophone when this moment, the rope of pulling out returned in the starter.

Though 4. in order to make bent axle not be subjected to partial load and two centrifugal pawls weighing apparatus of making even is set motor in service, sometimes but a centrifugal pawl is also no problem even because of air displacement of motor etc., but use two centrifugal pawls, cause the cost height in order to make even weighing apparatus.

5. in addition, even, cause the such waste of shape of the shape that centrifugal pawl one side is not set being made the weight increase using one occasion sometimes also for the weighing apparatus of making even.

Summary of the invention

The object of the present invention is to provide a kind ofly not undermine the advantage that aforementioned power accumulating starter device described in the prior art is had, and eliminate the brand-new power accumulating starter device of aforementioned all problems fully or fully.

To achieve these goals, power accumulating starter device according to the present invention is to clamp buffering between the power-transmission system between drive portion and the follower, hold the power accumulating starter device of force mechanisms portion, as the power-transmission system that holds power spring mechanism portion and follower, be provided with the ratchet mechanism portion that possesses driving claw and driven protuberance, the driving claw of being arranged to this ratchet mechanism portion becomes and holds power spring mechanism portion side, the driven protuberance of this ratchet mechanism portion becomes the configuration of follower side in addition, and this ratchet mechanism portion be provided with the occasion of pulling out action at rope be driving claw outstanding and be engaged in the follower side driven protuberance state and be the joint of removing this driving claw and accommodate the person of clutch mechanism portion of braking device that band that the state of this driving claw uses rubs etc. in the occasion of the return action of rope.

Description of drawings

Fig. 1 is the sectional view of expression embodiments of the invention.

Fig. 2 is with the sectional view along the A-A line of Fig. 1 shown in the jointing state of ratchet.

Fig. 3 is with the sectional view along the A-A line of Fig. 1 shown in the disengaged condition of ratchet.

Fig. 4 is the sectional view that another embodiment is shown with the jointing state of ratchet.

Fig. 5 is with the sectional view shown in the disengaged condition of identical ratchet.

Explanation 1 drive division 2 followers 3 buffering of label, hold force mechanisms section 4 and hold 5 ratchet mechanism sections 11 of power spring mechanism section and install with adapter 12 starter housings 13 central shafts 14 spools 15 shaft sleeve part 16 depressed parts 17 depressed parts 18 ropes and prop up axial region 36 peripheries 37 spring housing 38 friction springs, 39 hook baffle plates 40 and hold the 44 ratchet tyings of power spring 41 ratchets 42 central shafts 43 ring parts and stretch out with guide grab 48 ratchets with driven protuberance 45 crank wheels 47 ratchets and draw in the restriction of guide grab 49 movable ranges with pawl 50 nut portions 51 tabular baffle plates 52 tubular ratchets 53 overshooting shape driving claws 54 ratchet tyings driven protuberance 55 wall 56 spline ridges 57 splines of dashing forward that lead by hole 19 resilience ropes, 20 knots, 22 spring housing 23 rebound springs, 25 lids drive member 27 central screws 28 cylindrical part 31 interior engaging part 32 outer engaging part 34 umbrella shape heads 35 baffle plates of holding concurrently

Embodiment

Embodiment shown in Fig. 1～Fig. 3 is the power accumulating starter device that clamps buffering between the power-transmission system between drive portion 1 and the follower 2, hold force mechanisms portion 3,

Cushioning, hold force mechanisms portion 3 is to become the power of the holding spring mechanism portion 4 that additional force ground drives follower 2 by driving with follower 2 of this drive portion 1 while cushioning the power of holding and making this hold power in the driving process of drive portion 1,

Drive portion 1 has rotating speed at follower and reaches the rotating speed of this drive portion 1 ratchet mechanism portion 5 that the joint of driving claw is disengaged when above,

Follower 2 be when driving by drive portion 1 via ratchet mechanism portion 5 from the driving of this drive portion 1 way with holding that force mechanisms portion 4 directly is connected and with drive portion 1 revolver.

That is to say, drive portion 1 is being provided with central shaft 13 via the setting of the central position in the starter housing 12 that the form that is installed on the blower-casting (not shown) of starting pusher side with ABAP Adapter 11 is installed, on this central shaft 13, rotate supporting shaft 14 freely, on the inner side surface of this spool 14, be provided with around the depressed part 16 of the shaft sleeve part 15 of this spool 14, rope groove 17 to the peripheral direction opening is set on the periphery wall of this external this depressed part 16, offering rope makes the base end part of resilience rope 19 pass it in the side of this rope groove 17 by hole 18, the position outside the depressed part of being present in this base end part is provided with external diameter greater than the knot 20 of rope by the diameter in hole 18, twists in resilience rope 19 in the rope groove 17 and the front end of this resilience rope 19 is pulled out freely outside starter housing 12 via pulling out mouthful (not shown).

In addition, integrally being provided with on the outer lateral side of spool 14 with central shaft 13 is the spring housing 22 of central circular, the state of giving rollback power with 23 pairs of resilience ropes 19 of this rebound spring in this spring housing 22 rebound spring 23 of packing into.

And then, with these dividually, the lid that constitutes the opening block aforementioned depressed part 16 driving component 25 of holding concurrently, can not extract by central screw 27 but revolvably this lid driving component 25 of holding concurrently is supported on the front end of central shaft 13 and in order to improve stability cylindrical part 28 is set on aforementioned cover is held concurrently the inner face side of central position of driving component 25, these cylindrical part 28 rotations are entrenched on the periphery of aforementioned shaft sleeve part 15 freely.

In addition, buffering, hold force mechanisms portion 3 and be contained in the aforementioned depressed part 16, this inside and outside end that holds power spring 40 is fastened in is located at hold concurrently inside and outside engaging

part

31,32 in the peripheral part of the cylindrical part 28 of driving component 25 and depressed part 16 of aforementioned cover holding power spring 40.Moreover the coiling direction that holds power spring 40 is taken as and makes that when traction resilience rope this being held power spring 40 stores rotary driving force.

And then, the baffle plate that band umbrella shape head 34 is set on the head of aforementioned central screw 27 prop up axial region 35 and on lid is held concurrently the outer side surface of driving component 25, be provided with around this baffle plate prop up axial region 35 tubular periphery 36 and form spring housing 37, package friction spring 38 and prop up the hook baffle plate 39 that state support that the state that can rotate for this hook baffle plate 39 between the front end umbrella shape head 34 of axial region 35 and the elasticity of leaning on friction spring 38 braked all the time the clutch function of bringing into play ratchet 41 described later this spring housing 37 at this friction spring 38 and baffle plate.

In addition, configuration is as the ratchet 41 of driving claw performance function between hook baffle plate 39 and the double driving component 25 of lid, the oscillation center axle 42 of this ratchet 41 is rotatably freely supported on the lid driving component 25 of holding concurrently, this is external have integrally be provided with on the inner side surface of the crank wheel 45 of the ring part 43 of the mobile space of this ratchet 41 and on the first-class arranged spaced of the inner peripheral surface of this ring part 43 ground around a plurality of ratchet tying driven protuberances 44 as driven protuberance performance function are set.

Aforementioned hook baffle plate 39 comprises that ratchet stretches out the movable range of drawing in guide grab 48 and this hook baffle plate 39 with guide grab 47 and ratchet and limits with pawl 49, ratchet stretches out with the outside guiding ratchets 41 and be the state of a ratchet tying with driven protuberance 44 that be engaged in of guide grab 47 when pulling out resilience rope 19, and this is external when batching resilience rope 19, and ratchet draws in the inside guiding ratchets 41 and removing and the jointing states of ratchet tying with driven protuberance 44 of guide grab 48.

In addition, follower 2 is to comprise that screw thread is fixed in the crank wheel 45 of nut portions 50 of the bent axle (not shown) of internal-combustion engine, when starter housing 12 is installed on the blower-casting of motor one side (starting pusher side), become the state of holding concurrently driving component 25 subtends with aforementioned cover.

That is to say, in the aforementioned embodiment, pull out operation if resilience rope 19 applied, then spool 14 rotation and become the state of rolling-in rebound spring 23 and guarantee ratchet 41 and the jointing state of ratchet tying with driven protuberance 44 along with the ratchet of the rotation hook baffle plate 39 of this spool stretches out with guide grab 47 makes the double driving component 25 of spool 14 and lid integrally rotate thus and holds power to holding power spring 40.

So hold power spring 40 hold strength just torque value become greater than this holds power spring 40 and discharges at one stroke from moment of the load of aforementioned motor, this release force be delivered to bent axle and make the engine revolution starting.

And if engine start, then the starting of the rotation by aforementioned crankshaft side is automatically removed ratchet 41 and ratchet tying with the engaging of driven protuberance 44, and aforementioned motor stably continues to rotate.

In addition, if aforementioned ratchet 41 is disengaged with engaging of driven protuberance 44 with the ratchet tying, then spool 14 begins to reverse by rebound spring 23, along with this reverse is batched resilience rope 19 on this spool 14.

Another embodiment shown in Fig. 4～Fig. 5 is ratchet mechanism portion 5 following constitutors, and other are and previous embodiment constitutor similarly.

That is to say, ratchet mechanism portion 5 props up between the front end umbrella shape head 34 of axial region 35 at friction spring 38 and baffle plate, state that can rotate for this planar baffle plate 51 and the state support planar baffle plate of being braked all the time by the elasticity of friction spring 38 51, and rotation puts tubular ratchet 52 freely around the periphery 36 that props up axial region 35 around baffle plate.

In addition, on the end face of crank wheel 45 1 sides of this tubular ratchet 52, overshooting shape driving claw 53 is set, ratchet tying that overshooting shape driving claw 53 engages is set with driven protuberance 54 on this crank wheel 45, so the front end that planar baffle plate 51 is set on the inner peripheral surface of tubular ratchet 52 that engage with prominent wall 55 of guiding parallel to an axis and outer circumferential face at the inner peripheral surface of tubular ratchet 52 and periphery 36 on be provided with cooperate sliding freely mutually with axial uneven spline dash forward bar 56 and spline 57.

Main points are, aforementioned another embodiment's ratchet mechanism portion 5, be the joint of front end and the prominent wall 55 of guiding by planar baffle plate 51 and the prominent bar 56 of spline and the cooperating and the braking action to planar baffle plate 51 of friction spring 38 generations of spline 57, the occasion of pulling out action at resilience rope 19 is the state that ratchet tying usefulness driven protuberance 54 was given prominence to and be engaged in to overshooting shape driving claw 53, and the occasion of the return action of this external resilience rope 19 is the state person of the joint of removing aforementioned overshooting shape driving claw 53.

The present invention adopts other to constitute as the clutch mechanism portion of driving claw and implements, the lid driving component 25 of holding concurrently constitutes with other of not dual-purpose lid member and driving component and implements, and is possible can not unbalanced configuration to be provided with many to driving claw and driven protuberance and enforcement etc.

Be appreciated that from above explanation, according to starter device of the present invention, the change of the tractive force of cable traction handle is little, can start with draw operations smoothly, even the weak user of strength also can easily make the explosive motor starting, can start explosive motor with the timing of the best all the time in addition, and receive the effect that startability is good, particularly can eliminate the centrifugal pawl of the occurrence cause that becomes aforementioned all problems, whereby the following effect of performance.

1. ' because driving claw (ratchet) is taken as the formation of not rotating therewith after rotation (operation) starting at motor, so be not have to cause in the always the sort of rotation (operation) such situation of throwing off at motor, the starter device damage can be avoided making fully, such problem can't be restarted.

2. ' owing to be taken as when the rope of pulling out returns in the starter, the driving claw of ratchet mechanism portion is drawn in and driving claw is not contacted with the formation of the copulational protuberance of ratchet mechanism portion, so allophone does not take place.

3. ' and owing to be taken as the formation that the driving claw that is ratchet mechanism portion when engine operation breaks away from the state of driven protuberance, do not become non-equilibrium state so can on bent axle, not apply partial load, can avoid 4. aforementioned fully and 5. and so on problem.

Claims

1. power accumulating starter device, be between the power-transmission system between drive portion and the follower, to clamp buffering, hold the power accumulating starter device of force mechanisms portion, it is characterized in that, as the power-transmission system that holds power spring mechanism portion and follower, be provided with the ratchet mechanism portion that possesses driving claw and driven protuberance, the driving claw that is set to this ratchet mechanism portion becomes and holds power spring mechanism portion's side and the driven protuberance of this ratchet mechanism portion becomes the configuration of follower side, and this ratchet mechanism portion be provided with the occasion of pulling out action at rope be driving claw outstanding and be engaged in the follower side driven protuberance state and be the joint of removing this driving claw and accommodate the clutch mechanism portion of band friction stopping device that the state of this driving claw uses etc. in the occasion of the return action of rope.