CN219420392U - Starter armature - Google Patents

Abstract

The utility model discloses a starter armature, which relates to the technical field of armatures and comprises an armature body, wherein the armature body comprises an armature winding, a commutator and a brush holder, a plurality of winding grooves are formed in the armature winding in a circumferential array mode, the number of windings in each winding groove is turns, a lifting table matched with the armature winding is arranged at the bottom of the commutator, a plurality of brushes are arranged in the brush holder, the winding mode of the starter armature is changed by changing the number of turns of the original design armature winding, the winding mode is replaced by a device wire inserting mode by manual winding, the production efficiency can be effectively improved, the material consumption can be reduced, the magnetic field density can be improved by increasing the number of windings, and the outer diameter of the lifting table of the commutator is increased to meet the requirement of processing more wire grooves.

Description

Starter armature

Technical Field

The utility model relates to the technical field of armatures, in particular to a starter armature.

Background

In the process of realizing the mutual conversion of mechanical energy and electric energy by the motor, the motor plays a key and pivotal role. For a generator, it is a component that generates an electromotive force, such as a rotor in a direct current generator, a stator in an alternating current generator; for motors, it is a component that generates electromagnetic forces, such as the rotor in a dc motor, the armature is a component that houses wires that move relative to the magnetic field, inducing an electromotive force in the wires (as in a generator), or energizing the wires to act on amperes in the magnetic field, causing them to rotate in the magnetic field (as in a motor).

However, the existing winding method of the armature winding of the starter is mostly manual winding type, the manufacturing efficiency is low, and the magnetic field density is not high, so that the starter armature is needed to solve the problem.

Disclosure of Invention

The utility model aims to provide a starter armature, which solves the problems of low production efficiency and low magnetic field density caused by manual winding manufacturing of the existing starter armature in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the starter armature comprises an armature body, wherein the armature body comprises an armature winding, a commutator and a brush frame, 27 winding grooves are formed in the armature winding in a circumferential array mode, the number of windings in each winding groove is 1 turn, a lifting table matched with the armature winding is arranged at the bottom of the commutator, and a plurality of brushes are arranged in the brush frame.

Preferably, the wire winding groove is of an oval structure.

Preferably, the width of the brush is 5.3±0.1 mm.

Preferably, the number of brushes is 3 or 4.

Preferably, the brushes are arranged in the brush holder in a circumferential array.

Compared with the prior art, the utility model has the following beneficial effects:

1. the winding mode of the starter is changed by changing the number of turns of an original design armature winding, and is replaced by a device wire plugging mode by manual winding, so that the production efficiency can be effectively improved, the material consumption can be reduced, the magnetic field density can be improved by increasing the number of windings, and more wire slots can be machined by increasing the outer diameter of a lifting table of the commutator.

2. The riveting process of the U-shaped groove after winding can be reduced by arranging the winding groove into an oval structure, and the width of the electric brush is adjusted to adapt to the outer diameter and the groove number of the commutator.

Drawings

FIG. 1 is a schematic diagram of an armature assembly according to an embodiment of the utility model;

FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1 in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic diagram of an armature winding according to an embodiment of the utility model;

fig. 4 is a schematic structural cross-section of a commutator according to an embodiment of the utility model;

fig. 5 is a schematic view of a brush holder assembly according to an embodiment of the present utility model.

In the figure: 10. an armature body; 20. an armature winding; 21. a wire winding groove; 30. a commutator; 31. raising the table; 40. a brush holder; 41. a brush.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, a starter armature is disclosed, in which the number of winding turns (changed from 2 turns to 1 turn) of the original starter armature is changed, so that the manual winding mode is changed to the equipment insertion mode, but when each group of winding turns is changed to each group of winding turns of 2 turns, the density of a magnetic field is reduced and the starter performance is affected, and a method of increasing armature windings is adopted to solve the problem, namely, the number of winding turns of the armature winding of the original starter is increased from 21 groups of winding to 27 groups, and the outer diameter of a commutator lifting table 31 is correspondingly changed, so that the armature winding accords with the existing armature structure; when the coils are designed to be 27 groups, the number of the cross slots of each group of coils is different, and the original cross 5 slots are changed into cross 7 slots; meanwhile, the wire twisting head at the tail end of each winding is changed from the original 2.5 slot crossing mode to the 3 slot crossing mode so as to keep the electric angle unchanged; when the coils are designed to be 27 groups, the corresponding lifting table 31 is also redesigned, if the outer diameter of the contact surface of the commutator lifting table 31 and the electric brush is kept unchanged in the new design and the original design, the outer diameter of the commutator lifting table 31 in the original design can only meet the requirement of machining the slot 21, and interference can be cut through when the slot 27 is machined, so that the outer diameter of the commutator lifting table 31 needs to be increased according to actual requirements (safety clearance should be ensured when the starter operates).

The utility model provides a starter armature, includes armature body 10, and armature body 10 includes armature winding 20, commutator 30 and brush holder 40, is circumference array on the armature winding 20 and is provided with 27 wire winding grooves 21, and every group wire winding quantity is 1 turn in the wire winding groove 21, and the bottom of commutator 30 is provided with the elevating platform 31 with armature winding 20 looks adaptation, is provided with a plurality of brush 41 in the brush holder 40, through setting up every group wire winding turns and be 1 turn, can change original manual winding into equipment plug-in automatic wire winding, has improved the efficiency of production.

As a further scheme of the present utility model, referring to fig. 2, the winding groove 21 has an oval structure, and the riveting procedure of the U-shaped groove after winding can be reduced by changing the original designed 21U-shaped grooves into 27 oval grooves.

As a further scheme of the present utility model, referring to fig. 5, the width of the brushes 41 is 5.3±0.1 mm, the number of the brushes 41 is 3 or 4, the brushes 41 are arranged in the brush holder 40 in a circumferential array, and when the coils are designed to be 27 groups, the corresponding brush holder assembly and brushes are also redesigned; when the outer diameter of a contact circle of the commutator and the electric brush is fixed, the more the number of the grooves is, the smaller the width of each groove is, if the electric brush which is designed in the original way is directly used, because the width is relatively wider, the inter-phase interference short circuit can be generated in the operation of the starter, so that the width of one electric brush which is suitable for the situation is designed to be 5.3+/-0.1; and designing a corresponding electric brush assembly according to the actual size of the electric brush.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "configured," and "open" are to be interpreted broadly, and may be, for example, fixedly connected, configured, detachably connected, configured, or integrally connected and configured. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (5)

1. Starter armature, comprising an armature body (10), the armature body (10) comprising an armature winding (20), a commutator (30) and a brush holder (40), characterized in that: the armature winding (20) is provided with 27 winding grooves (21) in a circumferential array mode, the number of windings in each winding groove (21) is 1 turn, the bottom of the commutator (30) is provided with a lifting table (31) matched with the armature winding (20), and the brush frame (40) is internally provided with a plurality of brushes (41).

2. A starter armature as claimed in claim 1, wherein: the winding groove (21) is of an oval structure.

3. A starter armature as claimed in claim 1, wherein: the width of the brush (41) is 5.3+/-0.1 mm.

4. A starter armature as claimed in claim 1, wherein: the number of brushes (41) is 3 or 4.

5. A starter armature as claimed in claim 4, wherein: the brushes (41) are arranged in the brush holder (40) in a circumferential array.