CN211777782U

CN211777782U - Starter reduction mechanism

Info

Publication number: CN211777782U
Application number: CN202020332391.8U
Authority: CN
Inventors: 周玉友; 张锋; 李德喜; 郭乐平
Original assignee: RUIAN JILONG AUTOMOBILE ELECTRIC APPLIANCES CO Ltd
Current assignee: RUIAN JILONG AUTOMOBILE ELECTRIC APPLIANCES CO Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-10-27
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a starter reducing mechanism, which comprises a driving shaft, a planetary gear and an inner gear ring, wherein one end of the driving shaft is provided with a first chuck, a second chuck is arranged corresponding to the first chuck, the first chuck and the second chuck are connected through a first pin and a second pin, the first pin and the second pin are respectively arranged in a staggered and uniform way, the planetary gear is arranged between the first chuck and the second chuck in a uniformly distributed way, the planetary gear is sleeved on the first pin, the inner gear ring is sleeved on the position of the planetary gear and is engaged with the planetary gear, one end of the inner gear ring is clamped on a gear ring seat, the other end of the inner gear ring is clamped on a middle cover, damping rubber blocks arranged in a circumferential way are attached on the outer wall of the inner gear ring, one end face of the damping rubber block is clamped at the edge position of the gear ring seat, the other end face of the damping rubber block is abutted against the middle cover, thus achieving the technical effects, thereby improving the stability of the operation of the driving shaft and prolonging the service life.

Description

Starter reduction mechanism

Technical Field

The utility model relates to a structure in the motor vehicle starter, concretely relates to starter reduction gears.

Background

In order to obtain smaller volume, the starter achieves the purpose of reducing the rotating speed and increasing the torque by increasing the speed reducing mechanism, the general speed reducing mechanism reduces the speed and increases the torque by a planetary gear mode, the general starter structurally comprises a one-way device and a driving shaft, the one-way device is sleeved on the driving shaft, the one-way device is also provided with a driving gear, the driving gear is meshed with the gear on the flywheel to have the possibility of tooth collision, and the driving shaft is provided with spiral teeth matched with the inner hole of the isolator, so that certain reaction force can be generated when the driving gear collides with the gear of the flywheel, the reaction force can generate extrusion influence on the whole speed reducing mechanism, so that the planet gears in the speed reducing mechanism are forced to generate compression and collision, such a structure would affect the operation of the planetary gear and would cause a great mechanical wear, which in turn would affect the service life.

Disclosure of Invention

In order to solve the problem, the utility model aims to provide a compact structure, reasonable in design's starter reduction gears.

In order to achieve the above purpose, the utility model provides a following technical scheme: a starter speed reducing mechanism comprises a driving shaft, a planetary gear and an inner gear ring, wherein one end of the driving shaft is provided with a first chuck, a second chuck is arranged corresponding to the first chuck, the first chuck and the second chuck are connected through a first pin and a second pin, the first pin and the second pin are respectively arranged in a staggered and uniform way on the circumference, planetary gears are uniformly distributed on the circumference between the first chuck and the second chuck, the planetary gears are sleeved on the first pins, the inner gear ring is sleeved at the position of the planetary gears and is engaged with the planetary gears, one end of the inner gear ring is clamped on a gear ring seat, the other end of the inner gear ring is clamped on a middle cover, damping rubber blocks which are arranged in a circumferential manner are attached to the outer wall of the inner gear ring, one end face of the damping rubber block is clamped at the edge position of the gear ring seat, and the other end face of the damping rubber block is abutted to the middle cover.

A first base plate is arranged between the planetary gear and the first chuck, and a second base plate is arranged between the planetary gear and the second chuck.

The edge position of the gear ring seat is provided with an annular boss, an inner hole of the boss is matched with the outer edge of the inner gear ring, the boss is further provided with symmetrically arranged stop blocks, clamping grooves are formed at intervals between the stop blocks, symmetrically arranged positioning lugs are arranged on the outer wall of the inner gear ring and are arranged in the clamping grooves, and the two sides of the positioning lugs and the inner wall of the clamping grooves are filled with damping rubber blocks.

The utility model discloses a this kind of structure compares current starter speed reduction structure and has increased the yielding rubber piece for the drive shaft can effectually alleviate when bearing isolator reaction force, has avoided structural mechanical wear, and planetary gear sets up between first chuck and second chuck simultaneously, has also avoided reaction force to planetary gear's influence, has just so reached compact structure, reasonable in design's technological effect, thereby has improved the stability of drive shaft operation, and it is longer to make life.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the driving shaft assembly according to the embodiment of the present invention;

FIG. 3 is a view showing an assembled state of the planetary gear according to the embodiment of the present invention;

fig. 4 is a structural diagram of an inner gear ring in the embodiment of the present invention;

fig. 5 is a structural diagram of a gear ring seat according to an embodiment of the present invention.

Detailed Description

The present invention will be specifically described below by way of examples.

As shown in fig. 1 to 5, the embodiment discloses a starter decelerating mechanism, which comprises a driving shaft 1, planetary gears 2 and an inner gear ring 3, wherein a one-way clutch 4 is sleeved on the driving shaft 1, one end of the driving shaft 1 is provided with a first chuck 5, the first chuck 5 and the driving shaft are integrated, a second chuck 6 is arranged corresponding to the first chuck 5, the first chuck 5 and the second chuck 6 are connected through a first pin 7 and a second pin 8 to keep intervals, the first pin 7 and the second pin 8 are respectively arranged in a staggered and uniform way in a circumferential direction, the number of the first pin 7 and the number of the second pin 8 are respectively three, three planetary gears 2 uniformly distributed in the circumferential direction are arranged between the first chuck 5 and the second chuck 6, the planetary gears 2 are sleeved on the first pin 7, the inner gear ring 3 is sleeved on the position of the planetary gears 2 and is meshed with the planetary gears 2, and the structure can ensure that the planetary gears 2 are reliably, one end of the inner gear ring 3 is clamped on a gear ring seat 9, the other end of the inner gear ring 3 is clamped on a middle cover 10, damping rubber blocks 11 which are arranged in a circumferential mode are attached to the outer wall of the inner gear ring 3, one end face of each damping rubber block 11 is clamped at the edge position of the gear ring seat 9, the other end face of each damping rubber block is abutted to the middle cover 10, the middle cover 10 is assembled at the port position of a rotor shell of the starter, the damping rubber blocks 11 are abutted to grooves in the end face of the middle cover, and when the driving shaft is subjected to reactive force, the force can be damped and buffered through the damping rubber blocks 11.

A first shim plate 12 is arranged between the planet gear 2 and the first chuck 5, and a second shim plate 13 is arranged between the planet gear 2 and the second chuck 6. The structure can prevent the planet gear 2 from generating large-area contact friction with the end surface of the first chuck 5 or the second chuck 6, and improve the running stability, wherein the first pad 12 and the second pad are in triangular shapes.

The edge position of the gear ring seat 9 is provided with an annular boss 91, an inner hole of the boss 91 is matched with the outer edge of the inner gear ring 3, the boss 91 is further provided with symmetrically arranged stop blocks 92, clamping grooves 93 are formed at intervals between the stop blocks 92, symmetrically arranged positioning lugs 31 are arranged on the outer wall of the inner gear ring 3, the positioning lugs 31 are arranged in the clamping grooves 93, and the two sides of the positioning lugs 31 and the inner wall of the clamping grooves 93 are filled with damping rubber blocks 11 so as to be mutually clamped and matched. The structure can ensure that the inner gear ring 3 and the damping rubber block 11 are positioned more reliably and do not deviate in work.

Adopt above-mentioned technical scheme, it has increased yielding rubber piece 11 to compare current starter speed reduction structure for drive shaft 1 can effectually alleviate when bearing isolator 4 reaction force, structural mechanical wear has been avoided, planetary gear 2 sets up between first chuck 5 and second chuck 6 simultaneously, the influence of reaction force to planetary gear 2 has also been avoided, compact structure has just so been reached, reasonable in design's technological effect, thereby the stability of drive shaft 1 operation has been improved, and make life longer.

Claims

1. A starter reduction gears, includes drive shaft, planetary gear and ring gear, its characterized in that: the damping rubber block comprises a driving shaft, a first chuck, a second chuck, planetary gears, inner gear rings, a ring gear seat, a middle cover, damping rubber blocks and a plurality of damping rubber blocks, wherein the first chuck is arranged at one end of the driving shaft, the second chuck is arranged corresponding to the first chuck, the first chuck is connected with the second chuck through first pins and second pins, the first pins and the second pins are respectively arranged in a staggered and uniform mode in a circumferential mode, the planetary gears are evenly distributed in a circumferential mode and are sleeved on the first pins, the inner gear rings are sleeved on the planetary gears and are matched with the planetary gears in a meshed mode, one end of each inner gear ring is clamped on the ring gear seat, the other end of each inner gear ring is clamped on the middle cover, the damping rubber blocks are arranged in a circumferential mode and attached to the outer wall of the inner gear rings, one end face of each damping rubber block is clamped.

2. The starter decelerating mechanism according to claim 1, wherein: a first base plate is arranged between the planetary gear and the first chuck, and a second base plate is arranged between the planetary gear and the second chuck.

3. The starter decelerating mechanism according to claim 1, wherein: the edge position of the gear ring seat is provided with an annular boss, an inner hole of the boss is matched with the outer edge of the inner gear ring, the boss is further provided with symmetrically arranged stop blocks, clamping grooves are formed at intervals between the stop blocks, symmetrically arranged positioning lugs are arranged on the outer wall of the inner gear ring and are arranged in the clamping grooves, and the two sides of the positioning lugs and the inner wall of the clamping grooves are filled with damping rubber blocks.