CN2861527Y

CN2861527Y - Manual start mechanism for motorcycle engine

Info

Publication number: CN2861527Y
Application number: CN 200620109753
Authority: CN
Inventors: 周照强
Original assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Current assignee: Chongqing Zongshen Engine Manufacturing Co Ltd
Priority date: 2006-01-12
Filing date: 2006-01-12
Publication date: 2007-01-24
Anticipated expiration: 2016-01-12

Abstract

The utility model discloses a manually starting mechanism for motorcycle engine, whose startup disk is provided with a concentric circular pit, the startup pawl is arranged at the bottom of the pit through a rotary pin and rotates around the rotary pin, and the outer diameter of the startup ratchet wheel is less than the radius of the pit, more than the distance between the center of the pit and the rotary pin. The part of the end startup ratchet pawl used to move the startup ratchet wheel is out of the pit, and the distance between the rotary pin and the end of the startup pawl is more than that between the rotary pin and the edge of the pit. The limit plate is installed in the center axis and is in the pit, and the end of the startup claw is always pressed on the limit plate. The utility model uses the additional circular pit of the startup disc to limit the startup pawl, and changes the force structure of the startup pawl, from the hanging beam to a simple branch beam, effectively protecting the startup pawl and extending the service life. Meanwhile, the combination face of the limit plate is constantly changing, thus abrasion is shared by the entire combination face of the limit plate, with more even abrasion throughout the face, thereby protecting the limit plate.

Description

A kind of motorcycle engine pulls starting mechanism

Technical field

The utility model relates to the motorcycle engine starting mechanism, is specifically related to a kind of motorcycle engine and pulls starting mechanism.

Background technique

The start mode of motorcycle mainly contains pin starting and electricity starting, because there is the unconformable place of some special occasions in it, such as, the people of shank deformity can not use the pin starting, the electricity starting has no usage in the storage battery short of electricity, and four-wheel motor cycle is not easy to arrange pin starting or the like.There is above-mentioned deficiency in starting with electricity just to be based on the pin starting, thereby the third start mode occurred---pull starting.

Use at present more general motorcycle engine to pull starting mechanism, as shown in Figure 1, starter dog 3 is formed by plate stamping.One end of starter dog 39 is fixed on the starter panel 2 by shipping and reselling on another market, and the other end pin 9 that can rotate rotates, and it rotates pushing away by the fixing lug boss 5.1 on the limiting board 5 and realizes, rotates spacing by the positive stop lug boss on the starter panel 2 2.1.Because motor needs enough big power when starting, so the intensity of starting mechanism must be enough, and should be able to start in minimum angle of swing.As Fig. 2, shown in Figure 3, this structure is in the engine start process, starter dog 3 outwards opens under the effect of fixing lug boss 5.1 on it when limiting board 5 rotation, because the fixed-site of fixing lug boss 5.1, arrive starting later stage fixing lug boss 5.1 more more near starter dog 3 roots, the big more just easy more wearing and tearing of the power that fixing lug boss 5.1 is subjected to.At ratchet 3 after ratchet 10 combines with starting, because the spacing of ratchet 3 is that the root boss is spacing, and starting ratchet 10 is in the end combination of ratchet 3, this moment, starter dog 3 stressing conditions were a cantilever beam structure, totally unfavorable to starter dog 3 intensity, in continuous running, starter dog 3 is the easiest of the supporting fatigue damage.

In addition, Chinese patent ZL03249388 " engine hand pulling recoil starter " discloses a kind of starting mechanism that pulls, and its structure, principle and epimere are described similar, but also only are to have realized pulling starting, still have above-mentioned defective.

Summary of the invention

At the prior art above shortcomings, the purpose of this utility model is to provide a kind of novel motorcycle engine to pull starting mechanism, and it can greatly improve the force-bearing situation of starter dog, prolongs its working life.

The technical solution of the utility model is achieved in that a kind of motorcycle engine pulls starting mechanism, comprise starter dog, starter panel, starting ratchet and limiting board, starter panel is provided with the circular pit concentric with it, starter dog is installed in pit bottom and can rotates the pin rotation by shipping and reselling on another market, the external diameter of starting ratchet is less than the radius of pit, greater than the pit center of circle to the distance of shipping and reselling on another market.The part that the starter dog end is stirred the starting ratchet is positioned at outside the pit, and this is positioned at, and the outer part of pit is used for and the starting ratchet effect, stirs the starting ratchet and makes its rotation.Ship and resell on another market the distance of starter dog end greater than the distance at the pit edge of shipping and reselling on another market, and its purpose is that starter dog rotates pin when rotating, and the pit edge of starter panel can be spacing to it.

Further improve and be that limiting board is installed in and also is positioned at pit on the central shaft, the end of starter dog overlays all the time on limiting board, and the end that is being pushed away starter dog by limiting board all the time overturns outward.

The utility model has changed the starter panel structure; on starter panel, set up circular pit and utilized the circular pit edge to realize spacing to starter dog; spacing like this binding site must be the end of starter dog; other is stressed constant, and the above-mentioned mobile variation of spacing just point is greatly taken on a new look the stressed of starter dog; can be in good stress always; the risk of harm suddenly reduces, and has protected starter dog effectively, has prolonged working life.Simultaneously, the fixing lug boss of limiting board constantly slided along starter dog to be changed the starter dog end into and constantly slides along limiting board, has cancelled the fixing lug boss of limiting board.At this moment, the junction plane of limiting board constantly changes, and has avoided only producing at a place wearing and tearing, and wearing and tearing are shared by the entire joint face of limiting board, and wearing and tearing everywhere are comparatively even, and the starter dog end is identical to the active force of each point on the limiting board, can not produce extraordinary noise.

The utility model is skillfully constructed, and is reasonable in design, simple in structure, overcome the stressed bad problem of existing starter dog, both protected ratchet, protected limiting board again, and effect is obvious, has good use value.

Description of drawings

Fig. 1 is the structure diagram that existing motorcycle engine pulls starting mechanism.

Fig. 2 is the prestarting structure diagram of prior art.

Fig. 3 is the structure diagram that prior art starter dog and starting ratchet combine moment.

Fig. 4 is the prestarting structure diagram of the utility model.

Fig. 5 is the structure diagram that the utility model starter dog and starting ratchet combine moment.

Fig. 6 is the marriage relation schematic representation of the utility model starter dog and starter panel.

Fig. 7 is the C-C sectional view of Fig. 6.

Fig. 8 is the another kind of structural representation of starter dog.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

The utility model mainly by starting cover 1, starter panel 2, starter dog 3, wind spring 4, limiting board 5 and drag-line 6 form.Starter panel 2 is installed in starting and cover on 1 the central shaft 11 and can rotate around central shaft 11, wind spring 4 starting cover 1 and starter panel 2 between, an end of wind spring 4 is fixed on to start and covers on 1, the other end and starter panel 2 are fixed.Be fixed with drag-line 6 on starter panel 2, drag-line 6 is drawn after the annular groove on the starter panel 2 curls a few and is connected with handle 7.Above-mentioned part is a prior art, can be referring to Fig. 1.

Referring to Fig. 6, Fig. 7, starter panel 2 is provided with the circular pit concentric with it 8, and this pit 8 is a flat-bottom structure, and starting covers 1 dorsad.Starter dog 39 is installed in pit 8 bottoms and pin 9 rotation that can rotate by shipping and reselling on another market, and the exradius of starting ratchet 10 is slightly less than the radius of pit 8, greater than pit 8 centers of circle to shipping and reselling on another market 9 distance.Ship and resell on another market 9 to the distance of starter dog 3 ends greater than 9 the distances of shipping and reselling on another market to pit 8 edges, when rotating, can its end be withstood by pit 8 edges after pin 9 rotates to an angle starter dog 3 like this, promptly spacing to starter dog 3 by the pit edge, Fig. 6 has also reflected limit effect.Though starter dog 39 is installed in pit 8 bottoms by shipping and reselling on another market, starter dog 3 still has part to be positioned at outside the pit 8, and the starter dog end is so at least.Only in this way, starter dog 3 just can be stirred starting ratchet 10.Really stir starting ratchet 10, starter dog 3 ends are positioned at outer that part of of pit 8 just.

Limiting board 5 also is positioned at circular pit 8, and it is the same with prior art with the mounting type that central shaft 11 is covered in starting, and promptly central shaft 11 is processed with tapped hole vertically, and the connecting bolt 12 of limiting board 5 is movably arranged on the tapped hole.The spring 13 that limited plate 5 compressions are arranged between limiting board 5 and central shaft 11.From Fig. 4, Fig. 5, Fig. 6 as can be seen, the end of starter dog 3 presses down in the effect of torsion spring 14 all the time and is attached on the limiting board 5, and in rotation process, constantly on limiting board 5, slide, being equivalent to push away starter dog 3 by limiting board 5 turns up, the junction plane of limiting board 5 constantly changes, and starter dog 3 is terminal all the time.

The utility model improves 2 points: the one, and starter panel 2 is provided with circular pit 8, utilize pit 8 edges spacing to starter dog 3, this improvement mainly is the force-bearing situation that improves starter dog 3, it combines the stressed of moment with starting ratchet 10 and can analyze out from Fig. 5, Fig. 6, Fig. 5 has reflected the active force of 10 pairs of starter dogs 3 of starting ratchet, and Fig. 6 has reflected the active force of 2 pairs of starter dogs 3 of starter panel.The 2nd, allow starter dog 3 ends overlay all the time on limiting board 5, in sliding process, what fix wearing and tearing is starter dog 3 ends like this, and entire joint face is then shared in the wearing and tearing of limiting board 5, and this improvement mainly is the fretting wear that improves limiting board 5.

In the above-described embodiments, the external diameter of starting ratchet is slightly less than the radius of pit, greater than the pit center of circle to the distance of shipping and reselling on another market.Certainly, the external diameter of starting ratchet also can equal or be slightly larger than the radius of pit, this moment, the starter dog structure was seen Fig. 8, its end need be opened a little breach 15, the part of 15 times weak points of breach is positioned at pit, the distance that this part will satisfy the starter dog end of shipping and reselling on another market equally greater than the pit edge of shipping and reselling on another market apart from this condition.Part long on the starter dog breach 15 is positioned at outside the pit, stirs the starting ratchet by this part just.The external diameter of starting ratchet is slightly less than and is slightly larger than the radius of pit, is to make the starting ratchet approach the end of starter dog to the active force of starter dog, because approaching more end, and starter dog stressed good more.Owing to equaling at the external diameter that starts ratchet or being slightly larger than under the situation of pit radius, starter dog needs gap, increased difficulty of processing on the one hand, the existence of breach also can produce harmful effect to the stressed of himself on the other hand, so its effect is not so good as the situation of the external diameter of starting ratchet less than the pit radius.

Claims

1, a kind of motorcycle engine pulls starting mechanism, comprise starter dog (3), starter panel (2), starting ratchet (10) and limiting board (5), it is characterized in that: starter panel (2) is provided with the circular pit concentric with it (8), starter dog (3) is installed in pit (8) bottom and pin (9) rotation that can rotate by ship and resell on another market (9), the external diameter of starting ratchet (10) is less than the radius of pit (8), greater than the distance of pit (8) center of circle to ship and resell on another market (9), the part that starter dog (3) end is stirred starting ratchet (10) is positioned at outside the pit (8), and ship and resell on another market (9) arrive the distance at pit (8) edge greater than ship and resell on another market (9) to the terminal distance of starter dog (3).

2, motorcycle engine according to claim 1 pulls starting mechanism, it is characterized in that: described limiting board (5) is installed in and is positioned at pit (8) on the central shaft (11), and the end of starter dog (3) overlays all the time on limiting board (5).