CN2646410Y

CN2646410Y - Double reduction type starter

Info

Publication number: CN2646410Y
Application number: CN 03250245
Authority: CN
Inventors: 蔡德宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-08
Filing date: 2003-09-08
Publication date: 2004-10-06
Anticipated expiration: 2013-09-08

Abstract

The utility model relates to a class two reduction type starter characterized in that: a reduction axle(3) in parallel with an output shaft(1) of an electric motor and a drive shaft(2) of a reduction device is arranged between the two axles; a drive gear(4), a transition gear(5) and a driving gear(6) are sequentially and fixedly arranged on the output shaft(1), a reduction axle(3) and the drive shaft(2) and are sequentially joggled; the diameter of the drive gear(4), the transition gear(5) and the driven gear(6) goes bigger and bigger sequentially; one end of the drive shaft(2) sticks out of the reduction shell body(12), and a connecting gear(7) is arranged at the end; the tooth shape of the connecting gear(7) are corresponding with the gear ring on the input shaft on the engine; one end of a connection shaft(8) is connected with an electromagnet(10) inside an electromagnetic switch(9); another end is in contact with the drive shaft(2); an elastic starting piece(10) is arranged on the connecting shaft(8); an elastic reposition piece(11) is arranged on the drive shaft(2).

Description

Double reduction type starter motor

Technical field

The utility model relates to a kind of starter motor that uses when engine start, especially a kind of double reduction type starter motor.

Background technique

The most direct export structures of armature shaft that adopt of present starter motor, promptly the mechanical output of starter motor is directly exported from armature shaft, increase its output torque and power and must increase starting current, makes that its machine volume is huge, weight is big, electrical efficiency is low, specific power is low.The another kind of magneto starter motor of being sold on the market, remanent magnetism after it is magnetized by permanent magnet produces the required magnetic field of motor, electric motor structure is simplified, volume-diminished, weight saving, specific power is greatly improved, but the remanence strength of ferrite permanent-magnet materials is not high, its output torque of directly exporting drive-type is low, and the not high power range of its application that makes of magnetic energy product is restricted, and only is used for the starter motor less than 0.9kw at present.

Summary of the invention

It is little that the purpose of this utility model provides a kind of volume, in light weight, the high and big double reduction type starter motor of output torque of specific power.

The technological scheme taked of the utility model is for achieving the above object: double reduction type starter motor is made of motor, magnetic switch and speed reducer, between the live axle of the output shaft of motor and speed reducer, have and two parallel deboost axles, have on the output shaft transition gear and driven gear are installed on a driving gear, deboost axle and the live axle successively, the radius of driving gear, transition gear and driven gear increases progressively and engagement successively successively.One end of live axle stretches out outside the decelerating casing and connection gear is housed, the number of teeth of connection gear and technical parameter are corresponding with the engine flywheel gear ring, one end of coupling shaft links to each other with the electromagnet in the magnetic switch, steel ball in the other end and the live axle contacts, be set with the starting elastic component on the coupling shaft, be set with return springs on the live axle.

The beneficial effects of the utility model: owing to adopted double reduction gear, make live axle can export big torque, can satisfy the needs of high power engine when starting; Machine volume is little, in light weight simultaneously, specific power is high.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is a magnetic switch ABODA sectional structure chart

Fig. 3 is the E-E sectional view

Embodiment

As Fig. 1, Fig. 2, shown in Figure 3, double reduction type starter motor is made of motor, magnetic switch and speed reducer, be equipped with and two parallel deboost axles 3 between the output shaft 1 of motor and the live axle 2 of speed reducer, have on the output shaft 1 transition gear 5 and driven gear 6 are installed on a driving gear 4, deboost axle 3 and the live axle 2 successively, the radius of driving gear 4, transition gear 5 and driven gear 6 increases progressively and engagement successively successively.One end of live axle 2 stretches out outside the decelerating casing 12 and connection gear 7 is housed, the number of teeth of connection gear 7 and technical parameter are corresponding with the engine flywheel gear ring, the other end of live axle 2 links to each other with electromagnet 10 in the magnetic switch 9 by steel ball 17 and coupling shaft 8, be set with starting elastic component 16 on the coupling shaft 8, be set with return springs 11 on the live axle 2, starting elastic component 16 and return springs 11 are made for spring.

When needs are piloted engine, allow power connection magnetic switch 9, electromagnetic coil 15 energisings also produce magnetic field, electromagnet 10 starts elastic component 16 along coupling shaft 8 axial motions and compression under the effect of magnetic force, coupling shaft 8 promotes connection gear 7 on the live axle 2 again with till the engine flywheel gear ring is meshed, meanwhile, input contact 13 that connecting terminal 18 will link to each other with motor and output contact 14 are connected motor connecting power.The rotor of motor begins to rotate, output shaft 1 rotates and drives driving gear 4 rotations, driving gear 4 drives transition gear 5 rotations again, transition gear 5 drives driven gear 6 rotations again, driven gear 6 drives live axle 2 rotations again, connection gear 7 on the live axle 2 drives the rotation of engine flywheel gear ring again, thereby reaches the purpose of piloting engine.Reaching a stable rotation speed when the bent axle of motor is after motor is started, magnetic switch 9 outages, electromagnet 10 and connecting terminal 18 are under the effect of starting elastic component 16 and get back to original state, connection gear 7 on the live axle 2 just breaks away from engagement with the engine flywheel gear ring under the effect of return springs 11, simultaneously, input contact 13 and output contact 14 are got back to original state because of connecting terminal 18 and are disconnected, the motor outage, rotor just stops operating, and driving gear 4 also stops operating.

Claims

1, a kind of double reduction type starter motor that constitutes by motor, magnetic switch and speed reducer, it is characterized in that: between the live axle (2) of the output shaft (1) of motor and speed reducer, have and two parallel deboost axles (3), output shaft (1), deboost axle (3) and live axle (2) are installed with driving gear (4), transition gear (5) and driven gear (6) and engagement successively successively, and the radius of driving gear (4), transition gear (5) and driven gear (6) increases progressively successively; One end of live axle (2) stretches out outside the decelerating casing (12) and connection gear (7) is housed, the profile of tooth of connection gear (7) is corresponding with the flywheel ring gear on the motor, electromagnet (10) in one end of coupling shaft (8) and the magnetic switch (9) links to each other, the other end contacts with live axle (2) by steel ball (17), be set with starting elastic component (16) on the coupling shaft (8), be set with return springs (11) on the live axle (2).

2, double reduction type starter motor according to claim 1 is characterized in that: described starting elastic component (16) and return springs (11) are spring.