CN210033694U

CN210033694U - Speed reducing mechanism of planetary speed reducing starter

Info

Publication number: CN210033694U
Application number: CN201920656718.4U
Authority: CN
Inventors: 姚晓云; 陈泓
Original assignee: WUXI JINYANG MOTOR CO Ltd
Current assignee: WUXI JINYANG MOTOR CO Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-02-07
Anticipated expiration: 2029-05-08

Abstract

A speed reducing mechanism of a planetary speed reducing starter solves the problem that the prior DC starter has no good speed reducing mechanism, thereby leading the output torque to be smaller, thus leading the speed reducer to have larger volume and being not beneficial to the light weight of the prior mechanical equipment, and comprises a shell, wherein the middle part of one end of the shell is provided with a rolling bearing, the other end of the shell is provided with a front end cover, the middle part of the inner side of the shell is provided with an armature shaft, the armature shaft is provided with an armature assembly, the shell at the outer side of the armature assembly is fixed with a stator assembly, one side of the armature assembly is provided with a brush carrier assembly, the other side of the armature assembly is provided with a speed reducing mechanism, one side of the speed reducing mechanism is provided with a middle cover, the middle part of one side of the speed reducing mechanism is provided with a planet shaft, and a shifting fork, therefore, the output torque is increased, the size and the mass of the starter are reduced, the starter can occupy smaller space, and the mechanical light weight is facilitated.

Description

Speed reducing mechanism of planetary speed reducing starter

Technical Field

The utility model belongs to the technical field of start-up auxiliary assembly technique and specifically relates to a reduction gears of planet deceleration formula starter is related to.

Background

The starter is divided into a direct current starter, a gasoline starter, a compressed air starter and the like according to the working principle. The direct current starter is mainly adopted in internal combustion engines, and is characterized by compact structure, simple operation and convenient maintenance, the gasoline starter is a small gasoline engine with a clutch and a speed change mechanism, the power is high, the influence of air temperature is small, the large internal combustion engine can be started, and the direct current starter is suitable for high and cold areas, the compressed air starter is divided into two types, one type is that compressed air is pumped into a cylinder according to a working sequence, the other type is that a pneumatic motor is used for driving a flywheel, and the purpose of the compressed air starter is close to that of the gasoline starter and is generally used for starting the large internal combustion engine.

The existing direct current starter is not provided with a good speed reducing mechanism, so that the output torque of the existing direct current starter is smaller, the size of the speed reducer is larger, the occupied space is large, and the light weight of the existing mechanical equipment is not facilitated.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a speed reduction mechanism of planet speed reduction formula starter, the effectual current DC starter that has solved does not have fine speed reduction mechanism to lead to its output torque less, just so make the speed reducer volume great, occupation space is big, is unfavorable for present mechanical equipment's lightweight problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model discloses a casing, the mid-mounting of casing one end has antifriction bearing, the rear end cap is installed in antifriction bearing's the outside, the electromagnetic switch assembly is installed on the top of casing, the front end housing is installed to the other end of casing, the inboard mid-mounting of casing has the armature axle, install the armature assembly on the armature axle, be fixed with the stator assembly on the casing in the armature assembly outside, one side of armature assembly is equipped with the brush yoke assembly, the opposite side of armature assembly is equipped with reduction gears, one side of reduction gears is equipped with well lid, the middle part of reduction gears one side is equipped with the planet axle, install the shift fork between planet axle and the reduction gears, the epaxial isolator of installing of planet, one side of isolator is equipped with the jump ring, front end housing one end volume middle part is equipped with bearing.

Preferably, the speed reducing mechanism comprises an internal gear, a sun gear and a planetary gear, the internal gear is fixed on the inner side of the shell, the sun gear is arranged in the middle of the internal gear, the middle of the sun gear is connected with the armature shaft, and the planetary gear is connected between the sun gear and the internal gear in a meshing manner.

Preferably, the brush holder assembly is composed of a brush, a brush holder and a brush spring, and the brush is a member formed by pressing copper powder and carbon powder.

Preferably, the armature assembly is composed of an armature winding, an iron core and a commutator.

Preferably, the stator assembly is composed of a housing, magnetic poles and field coils.

Compared with the prior art, the beneficial effects of the utility model are that: the sun wheel and the planetary gear are arranged, so that the rotating speed can be reduced and the output torque can be increased after power transmission is carried out, and the effect of reducing the size and the mass of the starter is achieved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the speed reducing mechanism of the present invention;

labeled as: 1. a housing; 2. a rolling bearing; 3. a rear end cap; 4. an electromagnetic switch assembly; 5. a front end cover; 6. an armature shaft; 7. an armature assembly; 8. a stator assembly; 9. a brush holder assembly; 10. a speed reduction mechanism; 11. an internal gear; 12. a sun gear; 13. a planetary gear; 14. a middle cover; 15. a shifting fork; 16. a planet shaft; 17. a one-way clutch; 18. a clamp spring; 19. a needle bearing; 20. the gears are driven.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying fig. 1-2.

In the first embodiment, as shown in fig. 1, the utility model comprises a housing 1, a rolling bearing 2 is installed in the middle of one end of the housing 1, a rear end cap 3 is installed on the outer side of the rolling bearing 2, an electromagnetic switch assembly 4 is installed on the top end of the housing 1, a front end cap 5 is installed on the other end of the housing 1, an armature shaft 6 is installed in the middle of the inner side of the housing 1, an armature assembly 7 is installed on the armature shaft 6, a stator assembly 8 is fixed on the housing 1 outside the armature assembly 7, a brush holder assembly 9 is installed on one side of the armature assembly 7, a speed reducing mechanism 10 is installed on the other side of the armature assembly 7, a middle cap 14 is installed on one side of the speed reducing mechanism 10, a planet shaft 16 is installed in the middle of one side of the speed reducing mechanism 10, a shift fork 15 is installed between the planet shaft 16 and the speed reducing mechanism 10, an isolator 17 is installed on the planet shaft 16, a drive gear 20 is mounted at one end of the planet shaft 16.

In the second embodiment, based on the first embodiment, as shown in fig. 1 and 2, the speed reducing mechanism 10 includes an internal gear 11, a sun gear 12 and a planetary gear 13, the internal gear 11 is fixed inside the housing 1, the sun gear 12 is disposed in the middle of the internal gear 11, the middle of the sun gear 12 is connected to the armature shaft 6, and the planetary gear 13 is engaged between the sun gear 12 and the internal gear 11, when in use, after power is supplied, the armature shaft 6 rotates under the action of the armature assembly 7, the stator assembly 8 and the brush holder assembly 9, the armature shaft 6 rotates to drive the sun gear 12 to rotate, the sun gear 12 rotates to drive the planetary gear 13 to rotate, and the rotating force of the armature shaft 6 is transmitted to the planetary shaft 16 through the sun gear 12, so that the rotating speed of the planetary shaft 16 is reduced, thereby achieving the purpose of speed reduction.

In the third embodiment, on the basis of the first embodiment, the brush holder assembly 9 is composed of a brush, a brush holder and a brush spring, the brush is a member formed by pressing copper powder and carbon powder, the number of the brushes is generally four, the opposite brushes are homopolar, two negative brushes are grounded, and two positive brushes are connected with a magnetic field coil and are in close contact with a commutator under the action of a pressure spring.

In the fourth embodiment, on the basis of the first embodiment, the armature assembly 7 is composed of an armature winding, an iron core and a commutator, and is used for generating electromagnetic torque, the armature iron core is formed by laminating silicon steel sheets, the inside of the armature iron core is fixed on the armature shaft 6 through a spline, and the armature winding is embedded in an iron core groove.

In the fifth embodiment, on the basis of the first embodiment, the stator assembly 8 is composed of a housing, magnetic poles and magnetic field coils, the four magnetic poles are arranged on the inner wall of the housing, the magnetic field coils are arranged on the magnetic field coils, the same poles are opposite, the opposite poles are opposite, the different poles are adjacent, the magnetic poles are used for establishing a magnetic field of the motor, the magnetic field coils are wound by a method of connecting flat and thick copper wires or small copper wires in parallel, the magnetic field coils are connected in series or in parallel, one end of each magnetic field coil is connected with an insulating connecting column, namely a magnetic field connecting column, on the housing, and the.

The working principle is as follows: the utility model discloses during the use, the electric current passes through stator assembly 8, it rotates to drive armature assembly 7, armature assembly 7 rotates and drives armature shaft 6 and rotate, armature shaft 6 rotates and drives sun gear 12 and rotate, sun gear 12 rotates, it carries out the rotation to drive planetary gear 13, armature shaft 6's turning torque transmits through sun gear 12 after planet axle 16, make planet axle 16 transmit moment for isolator 17, make isolator 17 rotational speed reduce, 4 work of electromagnetic switch assembly makes shift fork 15 stir isolator 17 and remove, make drive gear 20 and engine flywheel ring gear meshing drive the engine, can make armature shaft 6's rotational speed reduce for isolator 17's rotational speed through reduction gears 10 transmission like this, thereby increase output torque, under the condition of guaranteeing the start-up effect, reduce the volume and the quality of starter.

Compared with the prior art, the beneficial effects of the utility model are that: the sun gear 12 and the planetary gear 13 are arranged, so that the rotating speed can be reduced and the output torque can be increased after power transmission is carried out, and the effect of reducing the size and the mass of the starter is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A speed reducing mechanism of a planetary speed reducing starter comprises a shell (1) and is characterized in that a rolling bearing (2) is installed in the middle of one end of the shell (1), a rear end cover (3) is installed on the outer side of the rolling bearing (2), an electromagnetic switch assembly (4) is installed at the top end of the shell (1), a front end cover (5) is installed at the other end of the shell (1), an armature shaft (6) is installed in the middle of the inner side of the shell (1), an armature assembly (7) is installed on the armature shaft (6), a stator assembly (8) is fixed on the shell (1) on the outer side of the armature assembly (7), a brush holder assembly (9) is arranged on one side of the armature assembly (7), a speed reducing mechanism (10) is arranged on the other side of the armature assembly (7), a middle cover (14) is arranged on one side of the speed reducing mechanism (10), a planetary shaft (16) is, a shifting fork (15) is arranged between the planet shaft (16) and the speed reducing mechanism (10), an isolator (17) is arranged on the planet shaft (16), a clamp spring (18) is arranged on one side of the isolator (17), a needle bearing (19) is arranged in the middle of the forehead of one end of the front end cover (5), and a driving gear (20) is arranged at one end of the planet shaft (16).

2. A reduction mechanism of a planetary reduction starter according to claim 1, characterized in that the reduction mechanism (10) comprises an internal gear (11), a sun gear (12) and a planetary gear (13), the internal gear (11) is fixed at the inner side of the shell (1), the sun gear (12) is arranged at the middle part of the internal gear (11), the middle part of the sun gear (12) is connected with the armature shaft (6), and the planetary gear (13) is engaged and connected between the sun gear (12) and the internal gear (11).

3. A reduction mechanism of a planetary reduction starter according to claim 1, wherein the brush holder assembly (9) is composed of a brush, a brush holder and a brush spring, and the brush is a member pressed by copper powder and carbon powder.

4. A planetary reduction starter reduction mechanism according to claim 1, characterised in that the armature assembly (7) consists of an armature winding, an iron core and a commutator.

5. A planetary reduction starter reduction mechanism according to claim 1, wherein the stator assembly (8) is composed of a housing, magnetic poles and field coils.