CN211670403U

CN211670403U - Commutator for starter

Info

Publication number: CN211670403U
Application number: CN202020284032.XU
Authority: CN
Inventors: 吕建春
Original assignee: Dixie Auto Electric Shanghai Ltd
Current assignee: Dixie Auto Electric Shanghai Ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-13
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses a commutator for a starter, which comprises a commutator body, wherein the commutator body comprises commutator segments, inter-segment mica, a first washer, a second washer, an insulating layer, an axial sleeve and a nut, the commutator segments are in a circular ring structure and are uniformly arranged outside the axial sleeve, the inter-segment mica is arranged between adjacent commutator segments, and the insulating layer is arranged between the commutator segments and the axial sleeve; the commutator segment inside is provided with trapezoidal flange, trapezoidal flange both sides are provided with a packing ring, No. two packing rings respectively, No. two packing ring opposite sides with the nut is contradicted and is connected, nut threaded connection is in axial sheathed tube one end. The utility model has the advantages of the connectivity is strong, and the job operation is stable, its mainly used automobile starter's operation.

Description

Commutator for starter

Technical Field

The utility model relates to an automobile starter technical field, specific commutator for starter that says so.

Background

In an automobile starter, a commutator is an indispensable important part, the stability and reliability of the commutator are a key point influencing the performance of the starter, but the connection strength of a commutator segment in the existing commutator is low, and the commutator segment is easy to displace in relative position in the running process of the automobile starter, so that the working performance of the commutator is unstable.

SUMMERY OF THE UTILITY MODEL

The above-mentioned weak point to exist among the prior art, the utility model aims at providing a commutator for starter that connectivity is strong, job run is stable.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a commutator for a starter comprises a commutator body, wherein the commutator body comprises commutator segments, inter-segment mica, a first washer, a second washer, insulating layers, axial sleeves and nuts, the commutator segments are provided with a plurality of groups, the plurality of groups of commutator segments are of circular ring structures and uniformly surround the outer side of the axial sleeves, the inter-segment mica is also provided with a plurality of groups and is respectively arranged between the adjacent commutator segments, and the insulating layers are arranged between the commutator segments and the axial sleeves;

the inside of the commutator bar is provided with a trapezoidal flange, one side of the trapezoidal flange is provided with a gasket, the gasket is embedded and connected between the commutator bar and the insulating layer, the other side of the trapezoidal flange is embedded and connected with a second gasket, the other side of the second gasket is abutted and connected with the nut, and the nut is in threaded connection with one end of the axial sleeve.

And a shaft hole which is arranged in a penetrating way is formed in the central line of the axial sleeve.

The shaft hole is echelonment, be equipped with three-step just in the shaft hole the bore of shaft hole reduces earlier the back increase by turning right from a left side.

And a coaxial spring is arranged in the shaft hole and is arranged between the three steps of the shaft hole.

The mica between the sheets and the commutator segments are provided with through holes, the mica between the sheets and the through holes on the commutator segments are oppositely arranged and mutually form a circular ring structure, two groups of copper rings are embedded and connected in the through holes in the circular ring shape, and each group of copper rings is in a semicircular ring structure.

The copper ring is composed of copper powder and bakelite powder, and the weight percentage of the copper powder is more than 70%.

The axial sleeve and the insulating layer are fixedly bonded together through glue.

The first gasket and the second gasket are made of rubber materials or silica gel materials.

The utility model has the advantages that: the device can well fix the commutator segment by arranging the trapezoidal flange at the inner side of the commutator segment, thereby realizing the stability of the commutator during operation; in addition, the copper ring can enhance the conductivity between the commutator segments and the bonding strength between the commutator segments and the mica between the segments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of the cross-sectional structure of the present invention.

In the figure: 1 commutator bar, 2 pieces of mica, 3 washers, 4 washers, 5 insulating layers, 6 axial sleeves, 7 screw caps, 8 trapezoidal flanges, 9 shaft holes, 10 coaxial springs and 11 copper rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a commutator for a starter comprises a commutator body, wherein the commutator body comprises commutator segments 1, inter-segment mica 2, a first washer 3, a second washer 4, an insulating layer 5, an axial sleeve 6 and a nut 7, the commutator segments 1 are provided with a plurality of groups, the plurality of groups of commutator segments 1 are uniformly arranged on the outer side of the axial sleeve 6 in a circular structure, the inter-segment mica 2 is also provided with a plurality of groups and respectively arranged between adjacent commutator segments 1, the adjacent commutator segments 1 are insulated and isolated through the inter-segment mica 2, the insulating layer 5 is arranged between the commutator segments 1 and the axial sleeve 6, and the commutator segments 1 are prevented from being electrically connected through the axial sleeve 6;

the commutator segment 1 inboard is provided with trapezoidal flange 8, and trapezoidal flange 8 one side is provided with packing ring 3 No. one, and 3 gomphosis of packing ring are connected now between commutator segment 1 and the insulating layer 5, and 8 opposite side gomphosis of trapezoidal flange are connected with packing ring 4 No. two, and 4 opposite sides of packing ring No. two are contradicted with nut 7 and are connected, and nut 7 threaded connection is in the one end of axial sleeve 6, through packing ring 3 and No. two packing rings 4 fixed connection between commutator segment 1 and the insulating layer 5.

The utility model discloses in, set up the shaft hole 9 that runs through the setting on the central line of axial sleeve 6.

The shaft hole 9 is in a ladder shape, three steps are arranged in the shaft hole 9, and the caliber of the shaft hole 9 is reduced from left to right and then increased.

A coaxial spring 10 is arranged in the shaft hole 9, and the coaxial spring 10 is arranged between three steps of the shaft hole 9.

The through holes are formed in the inter-sheet mica 2 and the commutator segment 1, the inter-sheet mica 2 and the through holes in the commutator segment 1 are oppositely arranged and mutually form a circular ring structure, two groups of copper rings 11 are embedded and connected in the circular ring through holes, and each group of copper rings 11 are of a semicircular ring structure.

In order to take account of the conductivity of the commutator segment 1 and the bonding strength between the commutator segment 1 and the inter-segment mica 2, the copper ring 11 consists of copper powder and bakelite powder, and the weight percentage of the copper powder is more than 70 percent.

The axial sleeve 6 and the insulating layer 5 are fixedly bonded together through glue.

The first gasket 3 and the second gasket 4 are both made of rubber materials or silica gel materials.

The utility model has the advantages that: the trapezoidal flange 8 is arranged on the inner side of the commutator segment 1, so that the commutator segment 1 can be well fixed, and the stability of the commutator during operation is realized; in addition, the copper ring 11 can enhance the conductivity between the commutator segments 1 and the bonding strength between the commutator segments 1 and the inter-segment mica 2.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a commutator for starter, includes the commutator body, its characterized in that: the commutator body comprises commutator segments (1), inter-segment mica (2), a first washer (3), a second washer (4), insulating layers (5), axial sleeves (6) and nuts (7), wherein multiple groups of commutator segments (1) are arranged, the multiple groups of commutator segments (1) are uniformly arranged on the outer side of the axial sleeves (6) in a circular ring structure, the inter-segment mica (2) is also provided with multiple groups and respectively arranged between the adjacent commutator segments (1), and the insulating layers (5) are arranged between the commutator segments (1) and the axial sleeves (6);

commutator segment (1) inboard is provided with trapezoidal flange (8), trapezoidal flange (8) one side is provided with packing ring (3) No. one, packing ring (3) gomphosis is connected now commutator segment (1) with between insulating layer (5), trapezoidal flange (8) opposite side gomphosis is connected with packing ring (4) No. two, packing ring (4) opposite side with nut (7) are contradicted and are connected, nut (7) threaded connection be in the one end of axial sleeve pipe (6).

2. The commutator for a starter as set forth in claim 1, wherein: and a shaft hole (9) which is arranged in a penetrating way is formed on the central line of the axial sleeve (6).

3. The commutator for a starter as set forth in claim 2, wherein: the shaft hole (9) is in a step shape, three steps are arranged in the shaft hole (9), and the caliber of the shaft hole (9) is increased after being reduced from left to right.

4. A starter commutator according to claim 3, wherein: a coaxial spring (10) is arranged in the shaft hole (9), and the coaxial spring (10) is arranged between the three steps of the shaft hole (9).

5. The commutator for a starter as set forth in claim 4, wherein: mica (2) between the pieces with the through-hole has been seted up on commutator segment (1), mica (2) between the pieces with through-hole on commutator segment (1) sets up relatively and forms ring structure mutually, is the ring form the gomphosis is connected with two sets of copper rings (11) in the through-hole, every group copper ring (11) all are the semicircle ring structure.

6. The commutator for a starter as set forth in claim 5, wherein: the axial sleeve (6) and the insulating layer (5) are fixedly bonded together through glue.

7. The commutator for a starter as set forth in claim 6, wherein: the first gasket (3) and the second gasket (4) are made of rubber materials or silica gel materials.