CN209250385U - A kind of novel rear cover positioning structure of starter - Google Patents

Abstract

The utility model relates to starter technical fields, especially a kind of novel rear cover positioning structure of starter, including rear cover, bushing is fixed with inside the rear cover, and the periphery fixation that the rear cover is located at bushing offers annulus escape groove, armature shaft is connected in the bushing, the armature shaft outer sheath is equipped with commutator, the end of the commutator is contacted with escape groove, and its inner wall contacted with armature shaft is equipped with spring, the commutator is equipped with iron core far from one end of rear cover, and the commutator and iron core pass through interference fit and are fitted on armature shaft, the core interior is inlayed equipped with armature winding, the armature winding fixed sleeves are equipped with no latitude band, the end of the armature shaft is equipped with the shaft shoulder, the bushing end face and shaft shoulder secure fit, the armature winding is made of the winding of spiral shell copper wire, the novel rear cover of the starter is fixed Bit architecture advantages of simple improves assembly efficiency, solves the problems, such as anti-attrition washer abnormal sound, be worthy to be popularized.

Description

A kind of novel rear cover positioning structure of starter

Technical field

The utility model relates to starter technical field more particularly to a kind of novel rear cover positioning structures of starter.

Background technique

Starter is the device for referring to convert the electric energy of battery to mechanical energy, and driving engine flywheel rotation is real The starting of existing engine, engine need to realize by external force and rotate before the power running with itself, and engine by External force is transitioned into this course of work that can voluntarily operate by stationary state the starting of engine, as long as the torque foot of starter It is enough big, and battery current is sufficiently large, guarantees that starter revolving speed is enough, and starter just can provide always power, be custom " motor " claimed.

Existing starter rear-lid and armature positioning device there are some defects, commutator bottom outlet plane, anti-attrition washer with And contacted with each other between rear cover bushing, the appearance of adjustment problem is unavoidably had in use process, or even will appear the event of abnormal sound Barrier problem is unable to reach stable mark in addition, the stable connection performance between existing starter rear-lid and other structures is not good enough Standard, for this purpose, it is proposed that a kind of starter novel rear cover positioning structure solves issue noted above.

Utility model content

Purpose of the utility model is to solve directly contact exists in the prior art Abnormal Sound Trouble, assembly efficiency occur The disadvantage that connective stability in lower and rear cover and starter between other structures is not good enough, and a kind of starter proposed is new Type rear cover positioning structure.

To achieve the goals above, the utility model adopts the technical scheme that

A kind of novel rear cover positioning structure of starter, including rear cover are designed, is fixed with bushing inside the rear cover, and The periphery fixation that the rear cover is located at bushing offers annulus escape groove, and armature shaft, the armature shaft are connected in the bushing Outer sheath is equipped with commutator, and the end of the commutator is contacted with escape groove, and its inner wall contacted with armature shaft is equipped with bullet Spring, the commutator is equipped with iron core far from one end of rear cover, and the commutator and iron core pass through interference fit and be fitted in On armature shaft, the core interior is inlayed equipped with armature winding, and the armature winding fixed sleeves are equipped with no latitude band.

Preferably, the end of the armature shaft is equipped with the shaft shoulder, and the bushing inner wall is equipped with bushing end face, the bushing end Face and shaft shoulder secure fit.

Preferably, the armature winding is made of the winding of spiral shell copper wire.

The utility model proposes a kind of novel rear cover positioning structure of starter, beneficial effect is: the starter is novel Between the armature shaft and rear cover that rear cover positioning structure is equipped be in coaxial relation so that armature shaft work rotation when always In steady state, and guarantee that rear cover has higher stability, solves to occur in the starter course of work unstable Phenomenon avoids anti-attrition washer and directly contacts with bushing end face, the shaft shoulder in addition, working in coordination between bushing end face and the shaft shoulder, from And solve the problems, such as occur the problem of abnormal sound and unstable abnormal failure in the starter course of work, and the starter is novel Rear cover positioning structure overall structure simple structure and rationally, not only stability with higher, but also to a certain extent also Improve the assembly efficiency of starter entirety.

Detailed description of the invention

Fig. 1 be the utility model proposes a kind of novel rear cover positioning structure of starter cross-sectional plane structural schematic diagram.

In figure: rear cover 1, escape groove 11, commutator 2, armature shaft 3, the shaft shoulder 31, armature winding 41, iron core 42, without latitude band 43, spring 5, bushing 6, bushing end face 61.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

Referring to Fig.1, the novel rear cover positioning structure of a kind of starter, including rear cover 1, after rear cover 1 is predominantly located at starter Certain supporting role is played at end, is fixed with bushing 6 inside rear cover 1, and rear cover 1 is located at the periphery of bushing 6 and fixes and open up There is annulus escape groove 11, armature shaft 3 is connected in bushing 6, the end of armature shaft 3 is equipped with the shaft shoulder 31, and 6 inner wall of bushing is equipped with axis Serve as a contrast end face 61, bushing end face 61 and 31 secure fit of the shaft shoulder, 3 outer sheath of armature shaft is equipped with commutator 2, the end of commutator 2 with Escape groove 11 contacts, and its inner wall contacted with armature shaft 3 is equipped with spring 5, and commutator 2 is equipped with iron far from one end of rear cover 1 Core 42, and commutator 2 and iron core 42 are fitted on armature shaft 3 by interference fit, are inlayed inside iron core 42 equipped with armature Winding 41,41 fixed sleeves of armature winding are equipped with no latitude band 43.

Armature winding 41 is made of the winding of spiral shell copper wire, and commutator 2 and iron core 42 pass through interference fit and be fitted in armature shaft 3 On, then inlaying device is in the inside of iron core 42 for armature winding 41, and armature winding 41 is outer tightly to be tied up by no latitude band 43, electricity The meeting high speed rotation when starter works of pivot winding 41, armature winding 41 may be thrown out of because of centrifugal action causes structure mixed Disorderly unstable, so the effect of tying up without latitude band 43 ensure that the stability of 41 structure of armature winding, commutator 2 and iron core 42 are total It is fitted on armature shaft 3 with interference fit, in starter work, commutator 2 can guarantee the electromagnetism that armature winding 41 generates The direction of torque remains unchanged, if starter turns to be stuck less than half-turn without the effect of commutator 2, utilizes starting The centrifugal force that machine generates when rotating controls the size of starting resistance as power, reaches and reduces starter starting current, increases Dynamic torque, so that armature winding 41 is able to maintain, direction is constant and rotation always is gone down.

In general starter, the armature shaft 3 inside starter can be arranged in the casing of starter under normal conditions, electricity One end of pivot 3 can be erected in the through-hole of starter casing one end, and the other end of armature shaft 3 is then arranged in rear cover 1, be Guarantee the flexibility of its rotation and generate unnecessary abnormal sound, to the same of the fixed both ends of armature shaft 3 in starter Heart degree has certain requirement, closes between the novel rear cover positioning structure rear cover 1 of the starter and its matched armature shaft 3 in coaxial System solves to occur in the starter course of work unstable so that armature shaft 3 is in steady state when working rotation always The phenomenon that, and work in coordination between bushing end face 61 and the shaft shoulder 31, avoids anti-attrition washer directly and bushing end face 61, the shaft shoulder 31 contacts, thus the problems such as solving the problems, such as to occur in the starter course of work abnormal sound and unstable abnormal failure.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (3)

1. a kind of novel rear cover positioning structure of starter, including rear cover (1), which is characterized in that fixation is set inside the rear cover (1) Have bushing (6), and the rear cover (1) be located at bushing (6) periphery fixation offer annulus escape groove (11), the bushing (6) in be connected with armature shaft (3), armature shaft (3) outer sheath be equipped with commutator (2), the end of the commutator (2) with keep away Slot (11) are allowed to contact, and its inner wall contacted with armature shaft (3) is equipped with spring (5), the commutator (2) is far from rear cover (1) One end be equipped with iron core (42), and the commutator (2) and iron core (42) by be interference fitted be fitted in armature shaft (3) On, it inlays inside the iron core (42) equipped with armature winding (41), armature winding (41) fixed sleeves are equipped with no latitude band (43)。

2. the novel rear cover positioning structure of a kind of starter according to claim 1, which is characterized in that the armature shaft (3) End be equipped with the shaft shoulder (31), bushing (6) inner wall be equipped with bushing end face (61), the bushing end face (61) and the shaft shoulder (31) secure fit.

3. the novel rear cover positioning structure of a kind of starter according to claim 1, which is characterized in that the armature winding (41) it is made of the winding of spiral shell copper wire.