CN207245907U - A kind of engine hand pulling starter - Google Patents

Abstract

The utility model provides a kind of engine hand pulling starter, belongs to technical field of engines.It solves the problems, such as that available engine Manual starting device is not easy to start engine.This engine hand pulling starter, including fixed cover, the reel, the pawl disk component for being connected with engine crankshaft that are wound with drawstring, central shaft is installed with the fixed cover, reel and the pawl disk component is sheathed on the central shaft and can be around the central axis respectively, it is additionally provided between reel and the pawl disk component and stores power wind spring, the both ends for storing power wind spring are clamped with the reel and pawl disk component respectively, and the reel can drive the pawl disk component to rotate by the storage power wind spring.The utility model is simple in structure, starts engine by storing power wind spring, operation is more smooth, more effortless, is more easy to start engine.

Description

A kind of engine hand pulling starter

Technical field

The utility model belongs to technical field of engines, is related to a kind of engine starting gear, particularly a kind of engine Manual starting device.

Background technology

Engine is a kind of common power output device, mainly includes gasoline engine and diesel engine etc..Engine is daily Application in live and work and its extensively, especially in farm machinery, graden machine.

The startup of engine is a more complicated process, to make engine by static transition operation, it is necessary to use External force rotates the bent axle of engine, makes suction combustion mixture and burning expansion in cylinder, when the rotating speed of bent axle reaches certain journey Degree, when making the power of gas in-cylinder combustion expansion output up to or over the power needed for crank rotation is maintained, working cycles are It can carry out automatically.Manual starting device is since its is simple in structure, and reliable operation is small, light-weight, the advantages such as cost is low, extensively It is applied to generally on put-put, especially in the graden machine of hand-held.

At present, engine hand pulling starter is usually all that the mandrel for pulling drawstring driving to be connected with drawstring disk rotates, from And the crank rotation of engine is driven to start engine, then reset drawstring by wind spring, for use next time.Such as China Patent application (application number：201220545144.1) disclosed in Manual starting device of engine, including internal tool is jagged solid Fixed lid and the starting board in fixed cover recess, recess is interior to have central shaft and wind spring groove, and starting board is arranged on center shaft, Wind spring one end is fixed in wind spring groove sidewall, and the other end is fixed on starting board, by pulling starting rope to drive starting board to rotate, Engine is driven by starting dog again.

Due to velocity of rotation of the startup depending on bent axle of engine, and when driving crank rotation, it is necessary to by cylinder Interior gas compression, the resistance that bent axle is subject in this process can be increasing, and this process is shorter, pulls drawstring People needs that power is increased to during extremely short the power completed needed for gas compression, thus needs so can be to operator A kind of slack pause and transition in rhythm or melody sense of member, it has not been convenient to exert a force, give people a kind of laborious sensation, and successfully starting up for engine, The follow-up high-speed rotation of short time maintenance bent axle is also needed to, drawstring is just also needed to and subsequently persistently exports certain pulling force, for not It will cause to start due to misoperation for known operating personnel and fail.

The content of the invention

The purpose of this utility model is that there are the above problem for existing technology, it is proposed that a kind of engine hand pulling starts Device, technical problem to be solved in the utility model are：How to make engine hand pulling starter easy to operate, easily start Engine.

The purpose of this utility model can be realized by following technical proposal：

A kind of engine hand pulling starter, including fixation covers, is wound with the reel of drawstring, being used for and engine crankshaft The pawl disk component of connection, fixed cover are installed with central shaft, and reel and the pawl disk component is sheathed on institute respectively State on central shaft and can be additionally provided between the central axis, reel and the pawl disk component and store power wind spring, institute The both ends for stating storage power wind spring are clamped with the reel and pawl disk component respectively, and the reel can pass through the storage power and roll up Spring drives the pawl disk component to rotate.

In this way, when pulling drawstring driving reel rotation, since reel and pawl disk component are connected by storing power wind spring Connect, store power wind spring and itself also storing power when driving the pawl disk being connected with engine crankshaft to rotate.Due to the cylinder of engine Start compressed air under the drive of bent axle, drive the power needed for crank rotation to be subject to storage power wind spring from low gradually increase Resistance gradually increase, when pulling force be not enough to driving crank rotation when, store power wind spring still rotated under the pulling force effect of drawstring Deformation stores the acting of drawstring in the form of potential energy, and operating personnel also constantly increase pulling force, Zhi Daola to drawstring at the same time When the pulling force that rope provides is more than or equal to the power needed for completion cylinder interior gas compression, stores power wind spring and drive crank rotation, and at this time Since cylinder has completed the compression of gas into the stage of burning release power, the power needed for crank rotation is reduced, and stores power Wind spring still persistently exerts a force bent axle, makes bent axle accelerate to rotate, the kinetic energy by the potential energy put aside in storage power wind spring into bent axle, Bent axle is set still to be able to keep high-speed rotation in the gas compression of cylinder next time, so as to start engine.

The design of power wind spring is stored, makes one just starting to be supplied to the pulling force of drawstring to be not enough to band dynamic crankshaft completion gas compression When, remain able to drive pawl wheel to rotate, allow people to there is time enough and space gradually to increase pulling force, operating process is more suitable Freely, prevent people from overexerting and being damaged quickly.And store power wind spring driving crank rotation early period can put aside it is enough Potential energy, persistently exports power to bent axle in the follow-up process, accelerates to bent axle and maintain high-speed rotation, make engine be more easy to be opened It is dynamic, avoid operating personnel and lack of staying power and bent axle can not be made to reach high-speed rotation, cause to start failure.

The both ends for storing power wind spring are directly clamped with reel and pawl disk component respectively, and so its connection is more firmly more steady Fixed, simple and compact for structure, storing power wind spring will not produce relative sliding with reel and pawl disk component, and the slippages of power are more It is few, it is not easy to break down because of Joint failure.And be directly clamped with pawl disk due to storing power wind spring, storing power wind spring can be straight Connect and its potential energy passed into pawl disk for kinetic energy, transmission speed faster, it is more efficient, can be easier to make engine crankshaft Rotating speed reaches required high rotating speed, so as to start engine.

In above-mentioned engine hand pulling starter, the reel is provided with for installing close to pawl disk component side The storage power wind spring groove of power wind spring is stored, it is big that the cell wall for storing power wind spring groove includes coaxial and around the storage power wind spring ring-type Cell wall and small cell wall, have gap and ribs, multiple ribs are around described big between the big cell wall and small cell wall Cell wall is uniformly distributed and connects the big cell wall and small cell wall.It is elastic component due to storing power wind spring, can exists after mounting certain Pretightning force, set store power wind spring groove, can both play protection store power wind spring, avoid wind spring from scattering and lose in use Effect, influences the normal use of equipment, makes Manual starting device job stability higher.

Power wind spring is stored due to needing to store substantial amounts of potential energy in use and opening potential energy into engine is provided Dynamic kinetic energy, therefore storage power wind spring in use can be by larger power, the storage power wind spring size of selection is also larger, at the same time should Stress all can be larger in use for side.The design of double-deck cell wall, both strengthen store power wind spring groove intensity, also strengthen around The structural strength of line wheel, makes it be not easy to deform and even rupture because stress is excessive in use, makes its work more stable, Service life is longer, and the design of big cell wall and small cell wall can also save material in the case where ensureing structural strength, drop Low production cost.

In above-mentioned engine hand pulling starter, the pawl disk component includes pawl disk, is leaned on the pawl disk Reel side has boss, and the boss is provided with card slot and stretches into the storage power wind spring groove, the storage power wind spring and the card Groove is clamped, the pawl disk closing storage power wind spring groove.Power wind spring is stored in use since meeting stress is deformed accumulating A large amount of potential energy is stored, is easy to make the pop-up of storage power wind spring cause to fail if its installation is unstable, will now store power wind spring and be closed in storage In power wind spring groove, the failure for storing power wind spring is avoided, makes its work more stable.

In above-mentioned engine hand pulling starter, the reel is also provided with reset volume away from pawl disk component side Spring groove, equipped with resetting wind spring in the reset wind spring groove, the both ends for resetting wind spring respectively with the central shaft and reel It is fixedly connected.Resetting the design of wind spring makes drawstring quickly to be rewound after pulling out reel on reel, under convenient Secondary use.

In above-mentioned engine hand pulling starter, the pawl disk component further includes pawl, remote on the pawl disk The annular groove around central shaft is provided with from the reel side, the inner side of the annular groove has limited block and mounting hole, institute Stating pawl includes articulated section, and the articulated section is articulated with the mounting hole, and spacing wind spring is also equipped with the articulated section, described Spacing wind spring makes the pawl have trend to one side oscillation of limited block all the time and with the limited block against the spine There is gap between the external groove sidevall of pawl and the annular groove, the pawl can when the coiling wheel drive pawl disk rotates edge The direction opposite with the pawl disk rotation direction swing and with the external groove sidevall of the annular groove against.

The pawl disk component design of the utility model so that pawl can be swung when pawl disk is rotated by centrifugal force, Make its closing with the gap between annular groove external groove sidevall and block the impeller being connected with bent axle, and when engine complete startup after, Drawstring no longer drives pawl disk to rotate, and pawl also return and no longer contacts under the action of spacing wind spring with impeller.In this way, pawl Disk component can be connected with bent axle when starting engine and separated after completing to start with bent axle, both ensure that opening for engine It is dynamic, and reduce the resistance of crank rotation after engine start, make engine operating more smooth.

In above-mentioned engine hand pulling starter, the pawl further includes pawl arm and claw, the pawl arm Both ends with the articulated section and claw integrally connected, are provided with opening on the side wall of the mounting hole respectively, and the pawl arm is from institute The opening for stating mounting hole is stretched out and can swung in the opening range of the mounting hole.The design of mounting hole side wall upper shed, Good position-limiting action can be played, pawl arm is swung in the range of opening, make pawl swing more accurately with stabilization.

In above-mentioned engine hand pulling starter, limiting slot, the claw are also provided with the outer wall of the pawl disk Can swing in the limiting slot and with the cell wall of the limiting slot against.

Pawl is when driving crank rotation with limiting slot cell wall against pawl stretches into limiting slot inner sealing pawl and annular Gap between groove, its own screens effect to impeller are more preferable, it is therefore prevented that the generation that pawl skids, can preferably drive song Axis rotates, and is more easy to start engine.

In above-mentioned engine hand pulling starter, the angle of the pawl arm and claw is 100~130 °.In this way, For pawl against rear, claw has the angle of an acute angle with limiting slot notch with annular groove cell wall, impeller can be stuck in this In acute angle recess, make screens of the pawl to impeller more stable.

In above-mentioned engine hand pulling starter, reinforcing rib is additionally provided between the pawl arm and the claw.By In when impeller rotates, stress is larger between the claw and pawl arm of pawl, and the setting of reinforcing rib can greatly be strengthened The bonding strength of claw and pawl arm, makes it be not susceptible to deform in stress, make its drive impeller when it is more stable.

Compared with prior art, the utility model has the following advantages：

1st, the utility model starts engine by storing power wind spring, can be quickly by the rotating speed lifting of bent axle to startup Rotating speed needed for engine, is more easy to start engine.

2nd, the utility model is simple in structure, does not have pause and transition in rhythm or melody sense in operation, and operation is more smooth, more effortless, and operation is more Easily, startup has higher success rate.

Brief description of the drawings

Fig. 1 is the stereogram of the utility model；

Fig. 2 is the structural decomposition diagram of the utility model；

Fig. 3 is the sectional view of the utility model；

Fig. 4 is the stereogram of reel；

Fig. 5 is the scheme of installation for storing power wind spring；

Fig. 6 is the structure diagram of pawl disk component；

Fig. 7 is the enlarged drawing in A portions in Fig. 6.

In figure, 1, fixed cover；2nd, central shaft；21st, bolt；3rd, wind spring mounting base is resetted；31st, wind spring is resetted；4th, reel； 41st, wind spring groove is resetted；42nd, power wind spring groove is stored；421st, big cell wall；422nd, small cell wall；423rd, ribs；424th, bayonet；5th, drawstring； 6th, power wind spring is stored；7th, pawl disk component；71st, pawl disk；711st, limiting slot；712nd, boss；713rd, limited block；714th, annular groove； 715th, mounting hole；716th, card slot；72nd, pawl；721st, articulated section；722nd, pawl arm；723rd, claw；73rd, pawl casing；74th, it is spacing Wind spring；8th, bent axle；9th, impeller.

Embodiment

It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

As shown in Figure 1 and Figure 2, this engine hand pulling starter includes fixed cover 1, central shaft 2, resets wind spring mounting base 3rd, wind spring 31, reel 4, drawstring 5, storage power wind spring 6, pawl disk component 7 are resetted.Central shaft 2 is fixed on fixed cover 1, is resetted Wind spring mounting base 3, reel 4, pawl disk 71, pawl casing 73 are sheathed on central shaft 2 and by coaxially connected at center successively Bolt 21 on axis positions, wherein resetting wind spring mounting base 3 and 2 tight clamping fit of central shaft, reel 4, pawl disk 71 and pawl Cover 73 is the flexible connection that can be rotated around central shaft 2.

Reset wind spring groove 41 as shown in figure 3, being had in the both ends of the surface of reel 4 and store power wind spring groove 42, reset volume Spring 31 is positioned at resetting in wind spring groove 41, its lateral ends is clamped with resetting 41 cell wall of wind spring groove, and inner opposite end is with resetting wind spring peace Dress seat 3 is clamped, while is resetted wind spring mounting base 3 and will be resetted wind spring 31 and be enclosed in and reset in wind spring groove 41.As shown in Figure 4, Figure 5, Storing the cell wall of power wind spring groove 42 includes concentric but different the diameter big cell wall 421 of ring-type and small cell wall 422, big 421 He of cell wall Connected between small cell wall 422 by multiple uniform rings around the ribs 423 that its circumference is set, one is also provided with small cell wall 422 Bayonet 424, stores power wind spring 6 positioned at storing in power wind spring groove 42, its lateral ends is clamped with the bayonet 424, inner opposite end and pawl Card slot 716 on disk 71 on the boss 712 prominent to 4 side of reel is clamped, and pawl disk 71 is enclosed in power wind spring 6 is stored Store in power wind spring groove 42.

As shown in Fig. 1, Fig. 6 and Fig. 7, pawl disk component 7 includes pawl disk 71, pawl 72, pawl casing 73, spacing wind spring 74.As shown in fig. 6, pawl 72 includes articulated section 721, pawl arm 722, claw 723, the both ends of pawl arm 722 are respectively with being hinged 723 integrally connected of portion 721 and claw, between claw 723 and pawl arm 722 have 120 ° of angles and they between be additionally provided with plus Strengthening tendons.Articulated section 721 is provided with ringent pilot hole, the installation that pawl 72 passes through articulated section 721 and sidewall opening along its axial direction Hole 715 is hinged, and pawl arm 722 is stretched out from the opening of mounting hole 715, and can be swung in the opening range of mounting hole 715, in advance Tight spacing wind spring 74 is installed in pilot hole and its both ends is respectively with pawl arm 722 and 715 side wall of mounting hole against making spine The limited block 713 of pawl arm 722 and inner side against.Certain gap is left between 714 cell wall of annular groove and pawl 72, with engine The impeller 9 that bent axle 8 is fixedly connected can unhinderedly the gap location in annular groove 714 rotate.On the cell wall of annular groove 714 also Be provided with limiting slot 711, when pawl 72 rotates claw 723 can extend into limiting slot 711 and cell wall against, claw 723 with it is spacing The cell wall of groove 711 forms a recess, impeller is stably stuck in recess.

During startup, the bent axle 8 of central shaft 2 and engine is all in inactive state, after pulling drawstring 5, reel 4 during beginning Rotate around central shaft 2 and drive respectively and reset wind spring 31 and store power wind spring 6, store band while self-deformation stores power of power wind spring 6 Pawl disk 71 rotates, and the pretightning force that pawl 72 makes pawl 72 overcome spacing wind spring 74 due to rotating the centrifugal force produced is outwards put It is dynamic, pawl 72 is reached in limiting slot 711, and close in the gap between 71 outer wall of pawl 72 and pawl disk, such pawl 72 Impeller 9 can be blocked and impeller 9 rotates, and due to storing power wind spring 6 at this time also without too many power is put aside, can not impeller 9 rotate, can only own rotation deformation storage pulling force, after the power being applied on drawstring 5 constantly increases, store power wind spring 6 and be applied to The power of impeller 9 also constantly increases to drive bent axle 8 to rotate.After gas is completed in compression in cylinder, the acting of gas combustion explosion is bent Axis 8 rotates the power rapid drawdown needed, and the potential energy that power spring 6 stores at this time does not stop to do work to bent axle 8, makes bent axle 8 accelerate to rotate And reach a higher rotating speed, the ensuing circulation of engine is carried out at high speeds, so as to fulfill engine from Major cycle and reach startup purpose.At this time, the potential energy that power spring 6 stores no longer drives pawl disk 71 to rotate after releasing, spine Pawl 72 retracts in situ under the action of spacing wind spring 74 and no longer blocks impeller 9 after losing centrifugal force, and impeller 9 can be in pawl 72 Gap between 71 outer wall of pawl disk rotates without barrier.After unclamping drawstring 5, drawstring 5 is under the action of wind spring 31 is resetted Rewind on reel 4, in case next time uses.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (9)

1. a kind of engine hand pulling starter, including fixed cover (1), be wound with drawstring (5) reel (4), for hair The pawl disk component (7) of motivation bent axle (8) connection, is installed with central shaft (2) on the fixed cover (1), the reel (4) and Pawl disk component (7) is sheathed on the central shaft (2) and can be rotated around the central shaft (2) respectively, it is characterised in that institute State be additionally provided between reel (4) and pawl disk component (7) store power wind spring (6), it is described store power wind spring (6) both ends respectively with institute Reel (4) and pawl disk component (7) clamping are stated, the reel (4) can drive the spine by the storage power wind spring (6) Pawl disk component (7) rotates.

2. engine hand pulling starter according to claim 1, it is characterised in that the reel (4) is close to pawl Disk component (7) side is provided with the storage power wind spring groove (42) that power wind spring (6) is stored for installing, the cell wall for storing power wind spring groove (42) Including coaxially and around the big cell wall of ring-type (421) and small cell wall (422) of the storage power wind spring (6), the big cell wall (421) There is gap and ribs (423) between small cell wall (422), multiple ribs (423) are around the big cell wall (421) It is uniformly distributed and connects the big cell wall (421) and small cell wall (422).

3. engine hand pulling starter according to claim 2, it is characterised in that the pawl disk component (7) includes Pawl disk (71), has boss (712) on the pawl disk (71), the boss (712) is provided with card slot by reel (4) side (716) and the storage power wind spring groove (42) is stretched into, the storage power wind spring (6) is clamped with the card slot (716), the pawl disk (71) the storage power wind spring groove (42) is closed.

4. engine hand pulling starter according to claim 3, it is characterised in that the reel (4) is away from pawl Disk component (7) side, which is also provided with, resets wind spring groove (41), described multiple equipped with reset wind spring (31) in the reset wind spring groove (41) The both ends of position wind spring (31) are fixedly connected with the central shaft (2) and reel (4) respectively.

5. according to the engine hand pulling starter described in claim 1 or 2 or 3 or 4, it is characterised in that the pawl disk group Part (7) further includes pawl (72), is provided with the pawl disk (71) away from the reel (4) side around central shaft (2) Annular groove (714), the inner side of the annular groove (714) have limited block (713) and mounting hole (715), pawl (72) bag Articulated section (721) is included, the articulated section (721) is articulated with the mounting hole (715), is also equipped with the articulated section (721) Spacing wind spring (74), the spacing wind spring (74) make the pawl (72) have all the time to (713) one side oscillation of limited block Trend and with the limited block (713) against between having between the external groove sidevall of the pawl (72) and the annular groove (714) Gap, the pawl (72) can rotate when the reel (4) drives pawl disk (71) to rotate along with the pawl disk (71) Side swing in the opposite direction and with the external groove sidevall of the annular groove (714) against.

6. engine hand pulling starter according to claim 5, it is characterised in that the pawl (72) further includes pawl Arm (722) and claw (723), the both ends of the pawl arm (722) are integral with the articulated section (721) and claw (723) respectively Connect, be provided with opening on the side wall of the mounting hole (715), the opening of pawl arm (722) from the mounting hole (715) is stretched Go out and can be swung in the opening range of the mounting hole (715).

7. engine hand pulling starter according to claim 6, it is characterised in that on the outer wall of the pawl disk (71) Also be provided with limiting slot (711), the claw (723) can swing in the limiting slot (711) and with the limiting slot (711) Cell wall against.

8. engine hand pulling starter according to claim 6, it is characterised in that the pawl arm (722) and claw (723) angle is 100~130 °.

9. engine hand pulling starter according to claim 8, the pawl arm (722) and the claw (723) it Between be additionally provided with reinforcing rib.