CN201496190U

CN201496190U - Easy starter of two-stroke gasoline engine

Info

Publication number: CN201496190U
Application number: CN2009203064940U
Authority: CN
Inventors: 徐道斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-20
Filing date: 2009-07-20
Publication date: 2010-06-02
Anticipated expiration: 2019-07-20

Abstract

The utility model discloses an easy starter of a two-stroke gasoline engine, which resolves problems that the existing starter generates high noise and is complicated in structure and poor in using stability during a working process. The easy starter of a two-stroke gasoline engine structurally comprises a casing, a rope pulley, a starting panel and a reset structure for resetting the rope pulley, the casing is provided with a pivot, the rope pulley and the starting panel are in clearance sleeve on the pivot, and the starting panel is connected with the rope pulley. The easy starter is characterized in that the starting panel is provided with a starting clamp block, the inner end of the starting clamp block is pivotally connected to the starting panel while the outer end thereof is a free end, the end of the pivot is provided with a shifting structure which is connected with the starting clamp block, when the starting panel rotates positively along with the rope pulley, the outer end of the starting clamp block is driven to be opened to the outside by the shifting structure, and when the starting panel rotates negatively along with the rope pulley, the outer end of the starting clamp block is driven to be reset to the inside by the shifting structure.

Description

The easy starter of two-stroke gasoline engine

Technical field

The utility model relates to a kind of starter, relates in particular to a kind of easy starter that is used on the small-sized two-stroke gasoline engine.

Background technique

Power on the Work machine of gardens generally is to be provided by small-sized two-stroke gasoline engine, and small-sized petrol engine is mainly realized by manpower when starting.Therefore, generally all need to be provided with starter on small-sized two-stroke gasoline engine, this starter is provided with stay cord, and when manpower spurred stay cord apace, the coupling mechanism of starter inside can be given petrol engine transmission of power and petrol engine is started.

The easy starter of a kind of two-stroke gasoline engine is disclosed in China's utility model patent 200820120706.1, its structure comprises housing and is located at housing interior rope sheave, boot disk, be provided with the pivot that is connected as a single entity with it in the housing, rope sheave and boot disk are socketed on the pivot with gap, be provided with reset spring between rope sheave and the housing, boot disk and rope sheave axially between be provided with the check configuration that can cooperatively interact.Boot disk is provided with some unidirectional moving teeth, be fixedly connected with the metal dial on the petrol engine, be provided with the driving fixture block that an end articulates in the dial, drive between fixture block and the metal dial and establish thrust spring in addition, boot disk is when forward rotation, and the other end that drives fixture block is connected on the moving tooth.Petrol engine need repeatedly start when starting sometimes just can make petrol engine be started, and when loosening stay cord, boot disk is the meeting backward rotation under the drive of rope sheave, and the other end and the moving tooth of the driving fixture block of this moment are separated, and skim over apace in the end of moving tooth.When the driving fixture block skims in the end of these moving teeth, because being arranged in the end of these moving teeth together forms concavo-convex, drive the swing that fixture block can take place not stop, drive fixture block and when swing, can clash into the metal dial, thereby make petrol engine that very big noise take place when starting.And also too frequent with the joining thrust spring of driving fixture block because of action, lost efficacy and easily produce fatigability.The check configuration that is provided with between boot disk and the rope sheave, the parts that cooperatively interact in the check configuration when the boot disk backward rotation need be separated concurrent looks to sliding, this just requires should reserve certain axial clearance between boot disk and the rope sheave, and this makes that the axial dimension of this starter is relatively large.

Summary of the invention

For overcoming above-mentioned defective, the technical problem that the utility model need solve is: the easy starter of two-stroke gasoline engine that the noise that is produced when a kind of good operating stability, gasoline engine starting are provided is little.

Another technical problem that the utility model need solve is: provide the two-stroke gasoline engine that a kind of size is less, structural compactness is good easy starter.

For solving the problem of stating of institute's technology, the technical solution of the utility model: the easy starter of a kind of two-stroke gasoline engine, comprise housing, rope sheave, boot disk and the resetting structure that rope sheave is resetted, housing is provided with pivot, rope sheave and boot disk are socketed on the pivot with gap, boot disk and rope sheave link, it is characterized in that, described boot disk is provided with the startup fixture block, starts fixture block the inner and is articulated on the boot disk, and the outer end is a free end, be provided with in the end of pivot and stir structure, this is stirred structure and links with starting fixture block, when boot disk is followed the rope sheave forward rotation, stirs structure the outer end that starts fixture block is opened towards the outside; When boot disk is followed the rope sheave backward rotation, stir structure the outer end that starts fixture block is resetted towards the inboard.When the stay cord on hull outside pulling rope sheave, rope sheave drives the boot disk forward rotation, the described structure of stirring makes the outer end that starts fixture block open towards the outside, the outer end that starts fixture block can stably be connected on the unidirectional moving tooth set on the dial, thereby the dynamical stability on the stay cord pass to petrol engine, petrol engine is started.After gasoline engine starting finishes, under the effect of resetting structure, the rope sheave backward rotation also makes the stay cord back-roll on rope sheave, during the rope sheave backward rotation, boot disk is followed backward rotation together, under the effect of stirring structure on the boot disk, the outer end that starts fixture block bounces back to the inside, can't contact with the unidirectional moving tooth on the dial.

As preferably, the end of described pivot is fixedly connected with platen, and the described structure of stirring is arranged on the platen rotationally.The platen that is provided with can be used for limiting rope sheave, the boot disk axial stability on pivot.Stirring structure is located on the platen rotationally, platen is static when starter is worked, need follow boot disk and rotate together and stir structure, stir and require to have certain sliding-frictional resistance between structure and the platen, in order to starting the action of fixture block on boot disk.

As preferably, the described structure of stirring is a jump ring, is formed with annular spacing groove at the dorsal part of platen, and jump ring is socketed in the restraining groove tightly, is formed with the latch closure that is bending-like in the outside of jump ring, this latch closure be located at the drive post that starts on the fixture block and be interlockingly connected.Stirring structure is jump ring, and this stirs easy system simple in structure, and utilizes the Elastic Contact between jump ring and the platen, improves the working stability that starts fixture block.

As preferably, described startup fixture block is two, is provided with two latch closures on the described jump ring symmetrically, and two latch closures snap onto respectively on two drive post that start on the fixture block.They are two, have improved force-bearing situation in the course of the work between startup fixture block and the dial, are convenient to moment between stable delivery.

As preferably, be provided with the arc convex body in the position that starts the fixture block outer end on the described boot disk, the outer end that starts fixture block is shelved on the arc convex body.This arc convex body provides good leading role for the rotation that starts fixture block on the one hand, has also increased the wear resistance of boot disk at this place on the other hand, the working life of having improved boot disk.

For improving the structural compactness of the easy starter of this two-stroke gasoline engine, between rope sheave and boot disk, be provided with the clockwork spring dish, the clockwork spring dish is socketed on the pivot with gap, is provided with reset spring between clockwork spring dish and the boot disk; Be provided with the one-way clutch structure between clockwork spring dish and rope sheave, this one-way clutch structure is positioned at the radial extension of rope sheave.Reset spring between clockwork spring dish and the boot disk provides certain buffer function for the pulling of stay cord, and after the gasoline engine starting failure, the recoil force that petrol engine produced can not be delivered on the stay cord because of the setting of described one-way clutch structure.The one-way clutch structure is positioned at the radial extension of rope sheave, the clockwork spring dish does not need to carry out axial motion in the course of the work, do not need in the axial direction to reserve the axial motion space for the clockwork spring dish, boot disk and rope sheave do not need to carry out axial motion yet in the starter working procedure in addition, thereby can effectively reduce the volume of this starter.

As preferably, described one-way clutch structure comprises the unidirectional fixture block that the some unidirectional ratchet be located between rope sheave and the clockwork spring dish and an end articulate, and the outside of unidirectional fixture block is provided with thrust spring.Setting by unidirectional ratchet and unidirectional fixture block forms described one-way clutch structure, the simple in structure setting conveniently.

As preferably, described unidirectional ratchet is formed on the dorsal part of clockwork spring dish, and an end of described unidirectional fixture block is articulated on the rope sheave.Unidirectional fixture block is generally a plurality of, and the week that they are distributed on rope sheave makes progress.

As preferably, the outer circumferential face of described clockwork spring dish is provided with some limits to ratchet, is provided with limit that an end articulates to fixture block on housing, is provided with thrust spring in limit between fixture block and housing.Described limit is being arranged so that after startup finishes to fixture block to ratchet and limit, the clockwork spring dish not can with rope sheave between take place relative to circumferentially rotating, thereby make the reset spring between rope sheave and the clockwork spring dish keep certain state that tightens up, when being convenient to utilize once more starter to start petrol engine, the pulling force on the stay cord can be delivered on the boot disk by rope sheave, clockwork spring dish fast.

Compared with prior art, the beneficial effects of the utility model are embodied in:

Owing to be articulated with the startup fixture block on the boot disk, and be provided with the described structure of stirring in the end of pivot, when petrol engine was started, the transmission of power stably on the clamping petrol engine dial on the set unidirectional moving tooth, was convenient in the outer end that starts fixture block.After gasoline engine starting finishes, the outer end that starts fixture block can inwardly bounce back under the effect of stirring structure fast, start fixture block and can not contact, start fixture block and also can not strike on the metal dial, thereby can not produce bigger noise with the unidirectional ratchet on the dial.Because of the outside that starts fixture block does not need to be provided with thrust spring, simplified the structure of starter on the one hand, there is not the phenomenon that influences the starter working stability because of thrust spring generation fatigue damage on the other hand yet.

Description of drawings

Fig. 1 is the longitudinal sectional drawing of the easy starter of the utility model two-stroke gasoline engine.

Fig. 2 is the plan view of rope sheave.

Fig. 3 is the plan view of clockwork spring wheel.

Fig. 4 is the worm's eye view of clockwork spring wheel.

Fig. 5 is the plan view of boot disk.

Fig. 6 is the worm's eye view of platen.

Fig. 7 is the structural representation that starts fixture block.

Embodiment

The structure of the easy starter of the utility model two-stroke gasoline engine comprises housing 8, rope sheave 9 and boot disk 5, has cavity in the housing 8, be provided with pivot 11 integrated with it on the bottom surface of housing 8 vertically, rope sheave 9 and boot disk 5 stack together and also are socketed on the pivot 11 to concentric gap.Rope sheave 9 links with boot disk 5, but driving torque between the two is provided with and rope sheave 9 joining resetting structures at housing 8.Rope sheave 9 is used to the stay cord of reeling, and boot disk 5 is provided with the inner startup fixture block 3 that articulates thereon, and the outer end that starts fixture block 3 is a free end, boot disk 5 be used for petrol engine on set dial link.Be provided with reset spring as resetting structure between rope sheave 9 and the housing 8, this reset spring makes the rope sheave 9 can backward rotation after gasoline engine starting finishes, so that stay cord is rewinded on the rope sheave 9.

Be provided with at the end position place of pivot 11 and stir structure, be provided with outstanding drive post 4 starting on the fixture block 3, the described structure of stirring snaps onto on the drive post 4.When pulling out stay cord apace in housing 8, rope sheave 9 drives boot disk 5 forward rotation, and under the effect of stirring structure, open towards the outside outer end that starts fixture block 3, thereby this end and described dial stably are connected together.After gasoline engine starting finishes, under the effect of reset spring, rope sheave 9 backward rotation, and drive boot disk 5 counteragent together, under the effect of stirring structure, the outer end that starts fixture block 3 resets towards the inboard.

End at pivot 11 is fixedly connected with platen 1 by fastening screw trip bolt, is formed with boss at the dorsal part of platen 1, and the outer circumferential face of this boss is provided with annular spacing groove 2.The described structure of stirring is the jump ring 16 that a usefulness spring steel is made, and is formed with two latch closures on the jump ring 16, and latch closure is bending-like, and these two latch closures are symmetrically located at the both sides of jump ring 16.Jump ring 16 is located in the restraining groove 2 tightly, and jump ring 16 can slide in restraining groove 2, but its surface friction drag suffered when sliding is bigger, stirs so that 16 pairs of jump rings start fixture block 3.Corresponding with two latch closures, snap onto respectively on two drive post 4 that start on the fixture block 3 being provided with 3, two latch closures of two described startup fixture blocks on the boot disk 5.

Because starting fixture block 3 slides on the surface of the boot disk 5 of being everlasting, on boot disk 5, be provided with outstanding arc convex body 15 in the corresponding position that starts fixture block 3 outer ends, the outer end that starts fixture block 3 is shelved on the surface of arc convex body 15 naturally, start fixture block 3 in course of action, its outer end contacts with the surface of convex body 15 all the time.

Connection in the easy starter of above-mentioned two-stroke gasoline engine between rope sheave 9 and the boot disk 5 can be to realize by the torsion spring that two ends are connected to respectively above them, also clockwork spring dish 6 can be set between them, clockwork spring dish 6 also is socketed on the pivot 11 with gap, clockwork spring shape reset spring is set between clockwork spring dish 6 and the boot disk 5, between rope sheave 9 and the clockwork spring dish 6 the one-way clutch structure is set, can realizes connecting between rope sheave 9 and the boot disk 5 like this.

Be provided with pit on the adjacent surface of rope sheave 9 and clockwork spring dish 6, described one-way clutch structure is set in this pit.The one-way clutch structure comprises that the some unidirectional ratchet 12 be located on clockwork spring dish 6 and rope sheave 9 adjacently situated surfaces and an end are articulated in the unidirectional fixture block 10 on the rope sheave 9, and the outside of unidirectional fixture block 10 is provided with two ends and acts on thrust spring on rope sheave 9 and the unidirectional fixture block 10 respectively.The bottom surface of pit is provided with the pin 13 that is connected as a single entity with it, is socketed on the pin 13 to a splaying of described unidirectional fixture block 10.Be provided with outstanding boss on the adjacent surface of clockwork spring dish 6 and rope sheave 9, boss is inserted in the above the pit of rope sheave 9, and described some unidirectional ratchets 12 circumferentially are distributed on the boss.Described unidirectional fixture block 10 and unidirectional ratchet 12 all are positioned at the pit on the rope sheave 9, the one-way clutch structure of Gou Chenging is positioned at the radial extension of rope sheave 9 thus, in the starter working procedure, 10 of unidirectional fixture blocks are swung in the radial extension of rope sheave 9, do not need to endwisely slip between clockwork spring dish 6 and the rope sheave 9, be beneficial to the size that reduces starter.

Between housing 8 and clockwork spring dish 6, be provided with limit to structure, this limit to structure comprise an end be articulated in limit on the housing 8 to fixture block 7 and some limits of being distributed in clockwork spring dish 5 outer circumferential faces to ratchet 14, be provided with two ends in limit to the outside of fixture block 7 and act on housing 8 and the thrust spring of limit on fixture block 7 respectively.

The some limits of above-mentioned limit in structure and one-way clutch structure tilt to same direction respectively to ratchet 14 and some unidirectional ratchets 12, but the direction that tilts between these two kinds of ratchets is opposite.

Claims

1. easy starter of two-stroke gasoline engine, comprise housing, rope sheave, boot disk and the resetting structure that rope sheave is resetted, housing is provided with pivot, rope sheave and boot disk are socketed on the pivot with gap, boot disk and rope sheave link, it is characterized in that, described boot disk (5) is provided with and starts fixture block (3), starting fixture block (3) the inner is articulated on the boot disk (5), the outer end is a free end, is provided with in the end of pivot (11) and stirs structure, and this is stirred structure and links with startup fixture block (3), when boot disk (5) is followed rope sheave (9) forward rotation, stir structure the outer end that starts fixture block (3) is opened towards the outside; When boot disk (5) is followed rope sheave (9) backward rotation, stir structure the outer end that starts fixture block (3) is resetted towards the inboard.

2. the easy starter of two-stroke gasoline engine according to claim 1 is characterized in that the end of described pivot (11) is fixedly connected with platen (1), and the described structure of stirring is arranged on the platen (1) rotationally.

3. the easy starter of two-stroke gasoline engine according to claim 2, it is characterized in that, the described structure of stirring is jump ring (16), dorsal part at platen (1) is formed with annular spacing groove (2), jump ring (16) is socketed in the restraining groove (2) tightly, the outside at jump ring (16) is formed with the latch closure that is bending-like, and this latch closure is interlockingly connected with the drive post of being located on the startup fixture block (3) (4).

4. the easy starter of two-stroke gasoline engine according to claim 3, it is characterized in that, described startup fixture block (3) is two, is provided with two latch closures on the described jump ring (16) symmetrically, and two latch closures snap onto respectively on two drive post (4) that start on the fixture block (3).

5. according to claim 1,2, the easy starter of 3 or 4 described two-stroke gasoline engines, it is characterized in that, described boot disk (5) goes up in the position that starts fixture block (3) outer end and is provided with arc convex body (15), and the outer end that starts fixture block (3) is shelved on the arc convex body (15).

6. according to claim 1,2, the easy starter of 3 or 4 described two-stroke gasoline engines, it is characterized in that, be provided with clockwork spring dish (6) between rope sheave (9) and boot disk (5), clockwork spring dish (6) is socketed on the pivot (11) with gap, is provided with reset spring between clockwork spring dish (6) and the boot disk (5); Be provided with the one-way clutch structure between clockwork spring dish (6) and rope sheave (9), this one-way clutch structure is positioned at the radial extension of rope sheave (9).

7. the easy starter of two-stroke gasoline engine according to claim 6, it is characterized in that, described one-way clutch structure comprises the unidirectional fixture block (10) that the some unidirectional ratchet (12) be located between rope sheave (9) and the clockwork spring dish (6) and an end articulate, and the outside of unidirectional fixture block (10) is provided with thrust spring.

8. the easy starter of two-stroke gasoline engine according to claim 7 is characterized in that described unidirectional ratchet (12) is formed on the dorsal part of clockwork spring dish (6), and an end of described unidirectional fixture block (10) is articulated on the rope sheave (9).

9. the easy starter of two-stroke gasoline engine according to claim 6, it is characterized in that, the outer circumferential face of described clockwork spring dish (6) is provided with some limits to ratchet (14), the limit that is provided with end pivot joint on housing (8) is provided with thrust spring in limit to fixture block (7) between fixture block (7) and housing (8).