CN212054961U

CN212054961U - Driving gear non-bushing type nose type structure starter

Info

Publication number: CN212054961U
Application number: CN202020111620.3U
Authority: CN
Inventors: 李仲书
Original assignee: Hubei Shendian Auto Motor Co ltd
Current assignee: Hubei Shendian Auto Motor Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-12-01
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a drive gear does not have bushing formula nose formula structure starter relates to the automotive equipment technical field, and this drive gear does not have bushing formula nose formula structure starter includes: drive lid, drive shaft, drive gear, clutch housing and bracket. The embodiment of the utility model provides a compare in traditional nasal structure starter, drive gear's mesopore cancellation bush has not only reduced the cost, axial space has more been saved, make starter design length shorter, and the drive gear mesopore does not install the bush and lets the wall thickness of drive gear's dedendum circle can increase the wall thickness equal thickness with the bush, to the product that dedendum circle wall thickness intensity is short, the problem of dedendum circle intensity has effectively been solved, of course, install in the bracket because of the clutch housing of this structure, only drive gear is in driving the lid, and drive gear outer diameter is generally all little than clutch housing outer diameter, so it can suitably reduce to drive the lid internal diameter, correspondingly can increase and drive the lid wall thickness, effectively solved and driven the lid because of the intensity lack problem that the wall thickness leads to is too thin.

Description

Driving gear non-bushing type nose type structure starter

Technical Field

The utility model relates to an automotive equipment technical field especially relates to a drive gear does not have bushing formula nose formula structure starter.

Background

The conventional nose starter comprises a driving cover 1, a driving shaft 2, a driving gear 3, a clutch shell 4, a bracket 5 and a bushing 6, wherein when the conventional nose starter is reversely overrun by a flywheel gear ring after the engine is started, the clutch shell 4 and the driving shaft 2 synchronously rotate, and the overrun is realized by the slip difference between the driving gear 3 and the driving shaft 2, so the bushing 6 must be installed in a hole in the driving gear 3.

In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art: the existence of bushing 6 has taken up axial length and radial wall thickness space, and has led to driving the internal diameter increase of lid 1, and then keeps making under the unchangeable circumstances of former part size and drives lid 1 thickness attenuation, has reduced the intensity of driving lid 1, also leads to the mesopore internal diameter increase in drive gear 3, and then makes the thinning of drive gear 3 root circle wall thickness under the unchangeable circumstances of former part size, has reduced the intensity of drive gear 3.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of relevant product among the prior art, the utility model provides a drive gear does not have bushing formula nose formula structure starter solves traditional nose formula structure starter axial space and little and drive the problem that lid intensity is low.

The utility model provides a drive gear does not have bushing formula nose formula structure starter, include: drive lid, drive shaft, drive gear, clutch housing and bracket, the drive shaft with the clutch housing is coaxial to be set up, the drive gear cover is established the drive shaft is close to one side of clutch housing, it has open-ended cover type structure for the wooden dipper shell to drive the lid, it establishes to drive the top cover of lid the tip of drive shaft, the inner wall cladding of driving the lid is in the drive shaft and the drive gear outside, drive the inner wall of lid with be formed with the clearance of dodging between the drive gear, the clutch housing sets up in the bracket.

In certain embodiments of the present invention, a gap formed between the inner wall of the drive cover and the drive gear is 8.1 mm.

In certain embodiments of the present invention, the thickness of the drive cap is 8 mm.

Compared with the prior art, the utility model discloses there is following advantage:

the embodiment of the utility model provides a compare in traditional nasal structure starter, drive gear's mesopore cancellation bush has not only reduced the cost, axial space has more been saved, make starter design length shorter, and the drive gear mesopore does not install the bush and lets the wall thickness of drive gear's dedendum circle can increase the wall thickness equal thickness with the bush, to the product that dedendum circle wall thickness intensity is short, the problem of dedendum circle intensity has effectively been solved, of course, install in the bracket because of the clutch housing of this structure, only drive gear is in driving the lid, and drive gear outer diameter is generally all little than clutch housing outer diameter, so it can suitably reduce to drive the lid internal diameter, correspondingly can increase and drive the lid wall thickness, effectively solved and driven the lid because of the intensity lack problem that the wall thickness leads to is too thin.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a conventional nasal starter;

fig. 2 is a schematic structural diagram of the driving gear shaftless nose type starter.

Detailed Description

In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. It is to be understood that the embodiments described are merely exemplary of the invention, and that no limitations are intended to the details of construction or design herein shown. The present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of providing a more thorough understanding of the present disclosure.

Referring to fig. 2, the driving gear non-bushing type nose type structure starter comprises a driving cover 1, a driving shaft 2, a driving gear 3, a clutch shell 4 and a bracket 5, wherein the driving shaft 2 is coaxially arranged with the clutch shell 4, the driving gear 3 is sleeved on one side, close to the clutch shell 4, of the driving shaft 2, the driving cover 1 is of a cover type structure with an opening for a gourd ladle shell, the top end of the driving cover 1 is sleeved on the end portion of the driving shaft 2, the inner wall of the driving cover 1 is wrapped on the outer sides of the driving shaft 2 and the driving gear 3, an avoiding gap is formed between the inner wall of the driving cover 1 and the driving gear 3, and the clutch shell 4 is arranged on the bracket 5. The embodiment of the utility model provides a drive gear does not have bushing formula nose formula structure starter when the completion starts the engine after by the reverse area surmounting of flywheel ring gear, drive gear 3 is synchronous revolution with drive shaft 2, need not consider with drive shaft 2 between relative rotation slip.

When the traditional nose type structure starter is overrunning, the clutch shell 4 and the driving shaft 2 synchronously rotate and realize overrunning by the slip difference between the driving gear 3 and the driving shaft 2, so that a shaft bushing 6 must be arranged in a hole in the driving gear 3, the gap formed between the inner wall of the driving cover 1 and the driving gear 3 is 1.25mm, and the thickness of the corresponding driving cover 1 is 5 mm; in the embodiment of the present invention, since the driving gear 3 and the driving shaft 2 rotate synchronously without considering the relative rotation slip with the driving shaft 2, the shaft bushing 6 is omitted in the middle hole of the driving gear 3, which not only reduces the cost and saves the axial space, but also shortens the design length of the starter, and the shaft bushing 6 is not installed in the middle hole of the driving gear 3, so that the wall thickness of the tooth root circle of the driving gear 3 can be increased by the same thickness as that of the shaft bushing 6, and for the product with the insufficient wall thickness strength of the tooth root circle, the problem of the strength of the tooth root circle is effectively solved, of course, because the clutch housing 4 of the structure is installed in the bracket 5, only the driving gear 3 is in the driving cover 1, and the outer diameter of the driving gear 3 is generally smaller than the outer diameter of the clutch housing 4, the inner diameter of the driving cover 1 can be properly reduced, the wall thickness of the driving cover 1 can be correspondingly increased, at this, the thickness of the driving cover 1 can be 8mm, and the problem that the strength of the driving cover 1 is insufficient due to too thin wall thickness is effectively solved. Of course, it should be noted that the gap formed between the inner wall of the driving cover 1 and the driving gear 3 and the thickness of the driving cover 1 can be selected according to actual requirements, and the utility model has no limitation to this.

Those not described in detail in this specification are within the skill of the art. 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 detailed description, or equivalent replacements may be made for some of the technical features of the embodiments. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.

Claims

1. A kind of drive gear does not have nose type structural starter of bushing, characterized by comprising: drive lid, drive shaft, drive gear, clutch housing and bracket, the drive shaft with the clutch housing is coaxial to be set up, the drive gear cover is established the drive shaft is close to one side of clutch housing, it has open-ended cover type structure for the wooden dipper shell to drive the lid, it establishes to drive the top cover of lid the tip of drive shaft, the inner wall cladding of driving the lid is in the drive shaft and the drive gear outside, drive the inner wall of lid with be formed with the clearance of dodging between the drive gear, the clutch housing sets up in the bracket.

2. The drive gear linerless nose starter of claim 1 wherein: the clearance that forms between the inner wall of driving the lid and the drive gear is 8.1 mm.

3. The drive gear linerless nose starter of claim 1 wherein: the thickness of driving the lid is 8 mm.