CN2222809Y

CN2222809Y - Spiral power spring starter for IC engine

Info

Publication number: CN2222809Y
Application number: CN 95211633
Authority: CN
Inventors: 孙建军
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-23
Filing date: 1995-05-23
Publication date: 1996-03-20
Anticipated expiration: 2005-05-23

Abstract

The utility model relates to a spiral spring starter for an internal combustion engine. The utility model comprises a winding mechanism, a start control device, an automatic limit energy storing mechanism and an automatic separation mechanism. A small gear and a big gear are driven to rotate by a hollow shaft. A spiral spring is closely reeled for energy storage. The stored energy is released through the spiral spring by the start control device. Thus, the big gear is driven to reversely rotate. The internal combustion engine is started through a ratchet wheel and the main shaft of a ratchet pawl disc. The automatic winding and automatic separation can be realized through the starting function of the spiral spring. The utility model has the advantages of compact structure, stable starting, reliable performance, simple operation, time saving, labor saving, long service life, etc. The spiral spring starter for an internal combustion engine can replace bulky hand starting and can be widely used for the starting of miniature internal combustion engine devices of transport, engineering, agricultural machines, etc.

Description

Internal-combustion engine clockwork spring starter motor

The utility model belongs to the starting arrangement of internal-combustion engine, is specifically related to a kind of mechanical type internal-combustion engine clockwork spring starter motor.

At present, the equipment of many use compact internal combustion engines, particularly tractor with small four wheels, agricultural tricycle etc. all need artificial hand starting when starting, and not only require great effort but also inconvenient, and the contingency that crank is hurted sb.'s feelings also takes place larry sometimes.In order to solve the problem of this respect, the starting arrangement that adopts the automatic energy storage of mechanical type is arranged, with cranking internal combustion engine.Disclosing a kind of spring starter for internal-combustion engine as Chinese patent 92226673, is power with the spring, adopts the hydraulic pressure remontoir, and structure is very complicated, and the main shaft one-way element can not separate under the high engine speeds running behind the energy storage.Though this structure can realize winding up automatically, replaces traditional hand starting, it also exists obvious defects.As:

1, its employing main shaft, gearwheel are the overrunning clutch that a cover is formed, though can be behind cranking internal combustion engine, working separately of both energy different direction, but in long-term the use, because of the gearwheel supporting is the periphery that is enclosed within main shaft, the both sides of gearwheel respectively have a dish plane scroll spring to draw partially towards an aspect all the time, thereby cause functor eccentric wear or damage, can't repair.

2, it adopts the quantitative control mechanism of hydraulic pressure energy storage, must guarantee to have enough engine oil pressures, otherwise can not wind up automatically, causes failure of apparatus or does not reach the storing energy of engine starting.Moreover require sealing strong, after these device wearing and tearing, also can't repair.

3, this recoil arm one end is arranged on by an one-way element and recoils on the axle, recoil arm and carry out reciprocally swinging, drive to recoil axle by one-way element and drive gearwheel, automatic plane scroll spring is tightened storing energy as winding up, in 1.5～2.5 minutes recoil time.Because the recoil time is oversize, overrunning clutch can not work long hours, so working life is not long.

The purpose of this utility model is to overcome above-mentioned defective of the prior art and deficiency, and a kind of compact structure is provided, and starting performance is reliable, mechanical type internal-combustion engine clockwork spring starter motor easy to install.

The purpose of this utility model is achieved through the following technical solutions, and this internal-combustion engine clockwork spring starter motor comprises remontoir, starting control mechanism, automatic spacing energy storage mechanism and automatic-separation mechanism.Remontoir comprise be arranged on, the gearwheel of the double headed roller axle head at middle shell center and be arranged on the clockwork spring of gearwheel both sides, and the hollow shaft parallel with Large Gear Shaft During and be sleeved on the hollow shaft and with the small gear of gearwheel engagement, also be set with retaining one-way element and driving lever one-way element on hollow shaft, the end of this driving lever extends to dish eccentric wheel of main shaft outer rim; The starting control mechanism comprises starting lever, Returnning spring and the hole back-up ring that is contained in the hollow shaft, be processed with the concave surface annular groove on the starting lever, small gear axis hole inwall is processed with on half slot, the hollow shaft and is processed with radial direction through hole, is provided with the clutch locking ball between hole and the groove; Automatic spacing mechanism is made up of limiting board, spacing bearing pin, pressing plate, follower bolt and extension spring, limiting board, the flat side that leans against clockwork spring of spacing bearing pin, be fixed in the middle shell and by pressing plate and catch on limiting board by extension spring, separating mechanism is made up of ratchet that is positioned at the gearwheel axle head and the ratchet that is positioned on the dish main shaft, ratchet and ratchet engagement.Clockwork spring releases energy when starting, and ratchet and ratchet mesh to make and coil main shaft rotation drive engine running, reach the starting purpose, drive dish spindle operation after the engine start, the rapid and ratchet disengaging of the ratchet on the dish main shaft.

Use first, adopt and manually wind up, rotate hollow shaft by manual wrench 29, starting lever pushes the clutch locking ball in small gear half slot and the hollow shaft radial direction through hole under the effect of Returnning spring, small gear and hollow shaft are rotated synchronously, the pinion gearwheel rotates rolling-in clockwork spring energy storage, the ratchet of while gearwheel axle head separates with ratchet does not change the dish main shaft, the retaining one-way element is installed in the lower shell body on the hollow shaft, the retaining one-way element makes it backward rotation not finish energy storage the hollow shaft monodirectional locking.

During starting, starting lever and Returnning spring compression, clutch locking ball enter in the starting lever concave surface annular groove, small gear separates with hollow shaft, clockwork spring discharges energy storage and drives gearwheel and the ratchet backward rotation that is contained on the gearwheel axle head, with ratchet engagement on the dish main shaft dish main shaft is rotated and pilots engine.Starting back ratchet and ratchet are in and surmount state, and the dish main shaft is separated with gearwheel, finish starting.

After the starting, starter motor begins the work of automatic spacing energy storage, starting lever will be located the separation steel ball and be pushed in small gear half slot and the hollow shaft radial direction through hole under the effect of Returnning spring, small gear and hollow shaft locking, the dish main shaft rotates synchronously with motor, the driving lever one-way element is reciprocally swinging under dish spindle eccentric wheel rotary action, the retaining one-way element is with the hollow shaft monodirectional locking, and small gear drives gearwheel and rotates the rolling-in clockwork spring, along with the continuous rolling-in of clockwork spring is dwindled, when surpassing limiting board, limiting board is pull-up automatically under the effect of extension spring, and limiting board withstands the driving lever one-way element, and the driving lever one-way element is separated with eccentric wheel, the idle running of dish main shaft is finished when automatic energy storage started for next time and is used.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is the utility model internal structure schematic representation;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is that Fig. 2 K is to schematic representation.

1, retaining one-way element 2, hole back-up ring 3, starting lever 4, hollow shaft 5, driving lever one-way element 6, lower shell body 7, clutch locking ball 8, limiting board 9, dish main shaft 10, bearing 11, ratchet 12, eccentric wheel 13, ratchet 14, ratchet 15, clockwork spring 16, clockwork spring fixing bolt 17, middle shell 18, clockwork spring fixing bolt 19, upper shell 20, clockwork spring 21, bearing 22, bearing 23, clockwork spring internal fixation groove 24, clockwork spring internal fixation groove 25, gearwheel 26, small gear 27, bearing 28, Returnning spring 29, wrench 30 manually winds up, extension spring 31, extension spring fixing bolt 32, spacing bearing pin 33, follower bolt 34, pressing plate 35, the housing fixing bolt

With reference to accompanying drawing, internal-combustion engine clockwork spring starter motor shell is made up of upper, middle and lower housing 19,17,6, is linked together by fixing bolt 35.The dish main shaft 9 by bearing 10 be bearing in down, the middle shell center, eccentric wheel 12, ratchet 11,14 are equipped with in dish main shaft inner end, its external part is connected with internal-combustion engine, gearwheel 25 two axial ends by bearing 21,22 be bearing in, middle shell 19,17 centers, stretch out middle shell one end ratchet 13 is housed, respectively there is a

dish clockwork spring

15,20 the gearwheel both sides, and this clockwork spring is inner to be connected with gearwheel clockwork spring internal fixation groove 23,24, the outer end be arranged on, the fixing bolt 16,18 of middle shell one side is connected.

Hollow shaft 4 endoporus are equipped with starting lever 3, Returnning spring 28, the hole is positioned at hollow shaft radial direction through hole and starting lever concave surface annular groove with back-up ring 2, clutch locking ball 7, or in the half slot of hollow shaft radial direction through hole and small gear 26, its position is controlled by starting lever, to play disengagement or the lock function to small gear 26.Hollow shaft is bearing in the upper shell by bearing 27.Be positioned at lower shell body one side at hollow shaft retaining one-way element 1 and driving lever one-way element 5 are housed, the external diameter of retaining one-way element 1 and lower shell body secure fit.

Also be provided with energy storage automatic spacing device in middle shell one side, this device is made up of limiting board 8, spacing bearing pin 32, pressing plate 34, follower bolt 33, extension spring 30.The welding of limiting board and spacing bearing pin is fixed on a side of middle shell clockwork spring 15 by pressing plate and follower bolt, and extension spring one end is colluded on limiting board, and the other end colludes on the extension spring fixing bolt 31 on the middle shell., under the effect of extension spring,, withstand the driving lever one-way element driving lever is separated with eccentric wheel when surpassing limiting board in the clockwork spring rolling-in, finish clockwork spring automatic spacing energy storage rapidly with the limiting board pull-up.

Claims

1, a kind of internal-combustion engine clockwork spring starter motor, comprise remontoir, starting control mechanism, automatic spacing energy storage mechanism and automatic-separation mechanism, feature of the present utility model be remontoir comprise be arranged on, the gearwheel of the double headed roller axle head at middle shell center and be arranged on the clockwork spring of gearwheel both sides, and the hollow shaft parallel with Large Gear Shaft During and be sleeved on the hollow shaft and with the small gear of gearwheel engagement, also be set with retaining one-way element and driving lever one-way element on hollow shaft, the end of this driving lever extends to dish eccentric wheel of main shaft outer rim; The starting control mechanism comprises starting lever, Returnning spring and the hole back-up ring that is contained in the hollow shaft, be processed with the concave surface annular groove on the starting lever, small gear axis hole inwall is processed with on half slot, the hollow shaft and is processed with radial direction through hole, be provided with the clutch locking ball between hole and the groove, automatic spacing mechanism is made up of limiting board, spacing bearing pin, pressing plate, follower bolt and extension spring, limiting board, the flat side that leans against clockwork spring of spacing bearing pin, be fixed in the middle shell by pressing plate, and catch on limiting board by extension spring; Separating mechanism is made up of ratchet that is positioned at the gearwheel axle head and the ratchet that is positioned on the dish main shaft, ratchet and ratchet engagement.

2, internal-combustion engine clockwork spring starter motor according to claim 1, it is characterized in that two axle heads of gearwheel by bearings at last, middle shell center, its external part is equipped with ratchet.

3, internal-combustion engine clockwork spring starter motor according to claim 1 is characterized in that the external diameter and the lower shell body secure fit of above-mentioned retaining one-way element.

4, internal-combustion engine clockwork spring starter motor according to claim 1, it is characterized in that above-mentioned dish main shaft by bearing be bearing in down, the middle shell center, eccentric wheel and ratchet are equipped with in dish main shaft inner end, external part is connected with internal-combustion engine.

5, internal-combustion engine clockwork spring starter motor according to claim 1 is characterized in that above-mentioned retaining one-way element, driving lever one-way element are the roller type one way device.