SU57487A1 - Starter - Google Patents

Description

The invention relates to starters already known for starting internal combustion engines in which the roller bearing the brush, engaging with the flywheel of the engine and moving along the screw thread, is provided with a screw thread of a large shaft of the axial movement of the roller itself.

In the proposed starter with a coupling having an internal thread, respectively, the thread of the larger shaft of the shaft, the axes carrying the spring-loaded brake pads are rigidly connected.

In FIG. I depicts a longitudinal section of a starter with the engine off; FIG. 2 is a cross section of it according to AB of FIG. one; FIG. 3 - the same on CD of FIG. one; FIG. 4 is a longitudinal section of it in the on position; FIG. 5 is a cross section through EF of FIG. four.

A nut is rigidly connected to the starter roller 15 / to the external threading of a larger schaga, placed in the coupling 5, mounted in ball bearings 6. The latter are protected by slips 10, 11 to 12 s. screws 14 and secured to the coupling 5 by means of a nut / 5. Clutch 5 is provided with projections carrying rigidly coupled

with an axle coupling 9, on which rotary brake pads 7 are placed, under the action of springs 8. Gear 2, engaging with the flywheel of the engine, is fixed with an abutment ring 3 and provided with an internal cutting of a smaller scap for movement along the roller. Between the bristles 2 and the nut 1 is placed a spring 4.

From the off position shown in FIG. 1, when the starter is turned on, the roller 15 of it, rigidly connected to the nut /, will be screwed into the sleeve 5, as the latter is braked by the pads 7. The gear 2, engaging the flywheel V .QM, moves relative to the roller in the opposite direction, but the translational movement of the roller itself The roller is much faster than the relative movement of the pinion, and as a result, the pinion is moved towards the flywheel. For example, if the roller moves in one turn by 24 mm, and the bristle 2 by 10 L1m, then in the end result the bristles will be displaced by a difference of 24 mm.

Even before the roller reaches the end, the bead of gear 2 (FIG. 4) turns the pads 7 around the axles 9

and disengage the clutch 5. The roller reaches the end and switches the starter to the reverse direction of rotation; At this point, the starter develops full torque and starts the engine. After the engine is turned on, gear 2 is released and the pads 7 are released, and clutch 5 is again braked, the roller is unscrewed and moves to its original position. The gear 2 is also retracted via the spring 4.

Thus, the operation of the starter is divided into two points: at the first moment, the flywheel is engaged with the flywheel, and at the second, the engine is cranked. Therefore, it is possible by a simple and case mechanism to produce a smooth and unstressed engagement, regardless of whether the starter is in the horizontal or in any other position.

When a gear tooth hits against a flywheel tooth, the mechanism considered makes it easy to overcome.

If the need arises for a backwash, it will be possible to use the friction clutch 16 (Fig. 1).

The subject matter of the invention.

A starter for starting internal combustion engines, in which the pinion carrying the gear wheel engaging the engine flywheel moving along a screw thread is equipped with a screw thread of greater pitch for axial movement of the roller itself, characterized by the use of spring-loaded brake pads 7 rotatable around axes 9 zannah with coupling 5, having an internal thread corresponding to the thread of the larger pitch of the roller.

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