CN217518769U - Starter speed reduction ring gear seat - Google Patents

Abstract

The utility model discloses a starter speed reduction ring gear seat, the ring gear seat is engineering plastics injection molding structure spare, the ring gear seat base central point puts and has seted up the planet shaft hole, one side circumference of ring gear seat has laid a plurality of locating convex blocks, the opposite side of ring gear seat is equipped with a circular boss; a concentric ring is arranged outside the planetary shaft hole of the gear ring base, a plurality of reinforcing ribs are arranged between the outer wall of the concentric ring and the positioning lug, and a plurality of reinforcing ribs are uniformly distributed between the planetary shaft hole of the circular boss surface and the inner circumferential wall of the circular boss. The utility model discloses an engineering plastics combines the strengthening rib structural design at ring gear atress position as starter ring gear seat material, can replace original metal ring gear seat satisfying under the ring gear seat uses required mechanical strength, realizes the starter speed reduction ring gear seat plastify.

Description

Starter speed reduction ring gear seat

Technical Field

The utility model relates to a starter part technical field, in particular to starter speed reduction ring gear seat.

Background

The starter is a core component of an automobile starting system, the types of the starter are various, the application of a speed reduction starter is the most common, and the speed reduction system of the starter comprises an armature shaft (sun gear), a planetary gear carrier (driving shaft), an inner gear ring, a gear ring seat, a driving end cover and the like. The gear ring seat is an important part in a starter deceleration system and is used for transmitting the torque of a starter motor to the driving end cover, so that the gear ring seat needs to be matched with the starter driving end cover by a limiting part to limit the circumferential rotation of the gear ring seat, and meanwhile, the impact of the torque generated when the starter works on the gear ring seat is large, and the gear ring seat needs to be ensured to have enough strength. Therefore, the existing starter gear ring seat is a metal structural part which is common in aluminum parts, most of the metal structural parts are processed and manufactured by processes of die casting, turning, milling, planing, grinding, boring, drawing and the like, and the processing process is complex, low in production efficiency and high in processing energy consumption.

With the promotion of the light weight process of the automobile and the increasingly deep idea of the green development of the green and environment-friendly low-carbon emission, the development of the plastic starter reduction gear ring seat which has low processing energy consumption and high production efficiency and can be recycled for the second time has practical significance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can satisfy starter speed reduction ring gear seat of use intensity, it is complicated to overcome the processing technology that current metal material starter speed reduction ring gear seat exists, and production efficiency is low, defect such as processing energy consumption height.

The purpose of the utility model is realized through the following technical scheme:

a starter deceleration gear ring seat is characterized in that the gear ring seat is an engineering plastic injection molding structural part, a planetary shaft hole is formed in the center of a gear ring seat base, a plurality of positioning lugs are circumferentially distributed on one side of the gear ring seat, and a circular boss is arranged on the other side of the gear ring seat; a concentric ring is arranged outside a planetary shaft hole of the gear ring base, a plurality of reinforcing ribs are arranged between the outer wall of the concentric ring and the positioning lug, and a plurality of reinforcing ribs are uniformly distributed between the planetary shaft hole of the circular boss surface and the inner wall of the circular boss.

Preferably, the reinforcing ribs distributed on the circular convex table surface are radially distributed by taking the planet shaft hole as the center, so that the mechanical strength of the gear ring seat can be better ensured.

Preferably, the circular boss surface is provided with annular reinforcing ribs, and the annular reinforcing ribs and the reinforcing ribs distributed in a radial shape are distributed in a crossed mode. The annular reinforcing ribs and the radial reinforcing ribs are matched for use, so that the strength and the rigidity of the gear ring seat can be further ensured.

Furthermore, the circumferential edge of the circular boss is provided with a plurality of limiting parts for fixing the circumferential positions of the gear ring seat and the driving end cover so as to prevent the gear ring seat from rotating relative to the driving end cover.

Preferably, the outer wall of the limiting part is provided with a plurality of reinforcing ribs. The strength of the plastic limiting part can be ensured by the design of the reinforcing ribs.

Furthermore, the limiting part is in a boss shape, and a limiting groove with a notch is formed in the middle of the boss. The shape of the limiting groove depends on the positioning structure of the driving end cover, and the width and the thickness of the limiting boss depend on the stress size of the limiting boss.

The outer circumference of the gear ring base is provided with a small notch with the width smaller than that of the notch of the limiting groove at the position opposite to the limiting part.

Preferably, the engineering plastic material selected for the gear ring seat is fiber reinforced modified engineering plastic, such as glass fiber reinforced nylon, carbon fiber reinforced nylon, glass fiber reinforced PPS, glass fiber reinforced polyester and the like, and the material is selected according to the strength and rigidity requirements of the gear ring seat.

Optionally, a metal insert is arranged in a planetary shaft hole at the bottom of the gear ring seat. When the starter works, the impact force of the torque generated to the gear ring seat is large, and the metal insert is arranged in the plastic planet shaft hole, so that the mechanical strength of the planet shaft hole of the gear ring seat can be improved, and the service life of the gear ring seat and the running reliability of the starter are ensured.

Another object of the present invention is to provide a starter including the above-mentioned ring gear seat.

To sum up, the utility model discloses following beneficial effect has:

the utility model discloses an engineering plastics combines the strengthening rib structural design at ring gear atress position as starter ring gear seat material, can replace original metal ring gear seat under satisfying ring gear seat and using required mechanical strength, realizes starter reduction ring gear seat plastify. The preparation and processing technology of the gear ring seat of the utility model is an injection molding technology, has obvious processing advantages compared with the traditional metal parts, has simple processing procedure, can realize one-cavity multi-mold, and can process and form a plurality of gear ring seats at one time, thereby not only reducing the energy consumption of production and processing, but also greatly improving the production efficiency of the gear ring seat; defective products or leftover materials in the processing process can be recycled, only the injection molding is needed, production waste materials cannot be caused, and the method is very environment-friendly.

Drawings

Fig. 1 is a schematic structural view of a first side surface of a starter ring gear seat according to an embodiment.

Fig. 2 is a schematic structural view of a second side surface of the starter ring gear seat according to the embodiment.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings. While the invention will be described in conjunction with the preferred embodiments, it will be understood that they are not intended to limit the invention to the described embodiments. On the contrary, the invention is intended to cover alternatives, modifications and equivalents, which may be included within the scope of the invention as defined by the appended claims.

As shown in fig. 1 to 2, a starter ring gear base is provided, wherein a plurality of positioning bumps 1 are circumferentially distributed on one side of the ring gear base, a planetary shaft hole 2 is formed in the center of the ring gear base, a concentric ring 3 is arranged outside the planetary shaft hole, and the size of the concentric ring is determined according to the diameter and arrangement of accommodated planetary gears; the concentric ring, the positioning lug boss and the circumferential part of the gear ring base form an inner gear ring accommodating cavity together, and a plurality of reinforcing ribs 4 are arranged between the concentric ring and the positioning lug boss; a circular boss 5 is arranged on the other side of the gear ring seat, a plurality of limiting parts 6 are arranged on the circumferential edge of the circular boss, the limiting parts are boss-shaped, and a limiting groove 7 with a notch is formed in the middle of each limiting part; a small notch 8 with the width smaller than that of the notch of the limiting groove is formed in the position, opposite to the limiting part, of the outer circumference of the gear ring seat; the circular convex table surface is radially provided with a plurality of reinforcing ribs 9 by taking the planetary shaft hole as the center, and is also provided with annular reinforcing ribs 10 which are crossly arranged with the radial reinforcing ribs 9; the outer wall of the limiting part 6 is provided with a plurality of reinforcing ribs 11; the gear ring seat is made of 40% glass fiber reinforced nylon composite material through an injection molding process.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A starter deceleration gear ring seat is characterized in that the gear ring seat is an engineering plastic injection molding structural part, a planetary shaft hole is formed in the center of a gear ring seat base, a plurality of positioning lugs are circumferentially distributed on one side of the gear ring seat, and a circular boss is arranged on the other side of the gear ring seat; a concentric ring is arranged outside a planetary shaft hole of the gear ring base, a plurality of reinforcing ribs are arranged between the outer wall of the concentric ring and the positioning lug, and a plurality of reinforcing ribs are uniformly distributed between the planetary shaft hole of the circular boss surface and the inner circumferential wall of the circular boss.

2. The starter decelerating ring gear according to claim 1, wherein the ribs arranged on the boss face are radially distributed around the planet shaft hole.

3. The starter decelerating ring gear seat according to claim 2, wherein the circular boss face is provided with an annular rib arranged crosswise to the radially arranged ribs.

4. The starter reduction ring gear according to claim 1, wherein the circular boss is provided at its circumferential edge with a plurality of stopper portions.

5. The starter reduction ring gear according to claim 4, wherein the outer wall of the stopper portion is provided with a plurality of ribs.

6. The starter decelerating ring gear seat according to claim 4, wherein the limiting portion is in the shape of a boss, and a limiting groove with a notch is formed in the middle of the boss.

7. The starter decelerating ring gear according to claim 6, wherein a small notch having a width smaller than that of the notch of the limit groove is formed at a position where the outer circumference of the ring gear base faces the limit portion.

8. The starter decelerating ring gear seat according to claim 1, wherein the ring gear seat is made of fiber reinforced modified engineering plastic.

9. The starter decelerating ring gear seat according to any one of claims 1 to 8, wherein a metal insert is provided in a planetary shaft hole of the ring gear seat.

10. A starter comprising the reduction gear ring carrier according to any one of claims 1 to 8.

Images