CN219643278U

CN219643278U - Collecting ring, generator and electric automobile

Info

Publication number: CN219643278U
Application number: CN202320511412.6U
Authority: CN
Inventors: 罗杰; 程正中; 何剑; 陈�峰
Original assignee: SHENZHEN KAIZHONG PRECISION TECHNOLOGY CO LTD
Current assignee: SHENZHEN KAIZHONG PRECISION TECHNOLOGY CO LTD
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-09-05
Anticipated expiration: 2033-03-08

Abstract

The utility model discloses a collecting ring, a generator and an electric automobile. The insulating ring and the plastic main body are molded into a whole, and the insulating ring is provided with a limiting part; the reinforcing ring is sleeved on the insulating ring, and an anti-rotation part matched with the reinforcing ring is arranged at a position corresponding to the limiting part on the reinforcing ring and is matched with the limiting part so as to limit the reinforcing ring and the insulating ring to rotate relatively; the slip ring assembly comprises a first copper ring and a second copper ring, the first copper ring is sleeved on the insulating ring, the second copper ring is sleeved on the insulating ring, and the first copper ring and the second copper ring are separated by the reinforcing ring. The utility model improves the structure of the collecting ring, solves the problem that the reinforcing ring is damaged due to no rotation when the oxidation layer on the surface of the copper ring is removed by machining, improves the product qualification rate and prolongs the service life of the collecting ring.

Description

Collecting ring, generator and electric automobile

Technical Field

The utility model relates to the technical field of generators, in particular to a collecting ring, a generator and an electric automobile.

Background

The collector ring is a metal ring fixed on a rotating part (such as a rotor of a generator) and is a carrier of generator rotor current. The carbon brush, also called brush, is a conductive member that makes sliding contact with a moving member to form an electrical connection, and is a carbonaceous cylindrical object mounted on a stationary part of the apparatus (such as a stator housing of a generator), and has a spring and a lead wire. When the generator runs, the collecting ring rotates along with the generator, the carbon brushes are rubbed against the surface of the collecting ring, and the current is a rotor loop which rotates through the carbon brush lead wire, the carbon brush, the collecting ring and the generator.

Because the copper ring of the collecting ring is bare copper, the surface is easy to oxidize, and the contact resistance between the copper ring and the carbon brush is increased, so that the oxidized part of the surface of the copper ring needs to be machined and removed, the contact resistance between the copper ring and the carbon brush after the copper ring is removed is smaller, and the current transmission is more stable.

However, in the prior art, the reinforcing ring is directly sleeved on the peripheral wall of the insulating ring, when the surface oxide layer of the copper ring is removed by machining, the copper ring rotates along with the plastic main body, but relative rotation can be generated between the reinforcing ring and the insulating ring, and the reinforcing ring does not rotate along with the copper ring and the injection molding main body, so that the contact position of the cutter and the reinforcing ring is always unchanged in the axial machining process of the cutter along the copper ring, the same part of the reinforcing ring is always cut, the reinforcing ring is damaged, and the product yield and the service life of the collecting ring are reduced.

Disclosure of Invention

The utility model mainly aims to provide a collecting ring, a generator and an electric automobile, and aims to improve the product qualification rate and the service life of the collecting ring.

To achieve the above object, the present utility model proposes a slip ring comprising:

a plastic body;

the insulating ring is integrally injection-molded with the plastic main body, and is provided with a limiting part;

the reinforcing ring is sleeved on the insulating ring, an anti-rotation part matched with the reinforcing ring is arranged at the position, corresponding to the limiting part, of the reinforcing ring, and the anti-rotation part is matched with the limiting part to limit the relative rotation of the reinforcing ring and the insulating ring; and

the slip ring assembly comprises a first copper ring and a second copper ring, wherein the first copper ring is sleeved on the insulating ring, the second copper ring is sleeved on the insulating ring, and the reinforcing ring separates the first copper ring from the second copper ring.

Optionally, the limiting part is a clamping groove or a clamping hole formed in the insulating ring, and the anti-rotation part is a convex rib convexly arranged on the reinforcing ring; or alternatively

The limiting part is a convex rib which is convexly arranged on the insulating ring, and the anti-rotation part is a clamping groove or a clamping hole which is formed in the reinforcing ring.

Optionally, the slip ring assembly is injection molded integrally with the plastic body.

Optionally, a notch is formed in the inner side of the insulating ring, a limiting block is convexly arranged at a position, corresponding to the notch, of the plastic main body, and the limiting block is clamped in the notch so as to limit the insulating ring and the plastic main body to rotate relatively.

Optionally, the slip ring assembly further includes a first lead and a second lead fixed on the plastic body, one end of the first lead is connected with the first copper ring, the other end of the first lead extends out of the plastic body, one end of the second lead is connected with the second copper ring, and the other end of the second lead extends out of the plastic body.

Optionally, the first lead and the second lead are both disposed in the plastic body.

Optionally, the length of the first lead is greater than the length of the second lead.

Optionally, the first lead is welded and fixed with the first copper ring, and the second lead is welded and fixed with the second copper ring.

To achieve the above object, the present utility model proposes a generator comprising a slip ring as described above, the slip ring comprising:

a plastic body;

In order to achieve the above purpose, the utility model also provides an electric automobile, which comprises the generator.

In the technical scheme of the utility model, the collecting ring comprises a plastic main body, an insulating ring, a reinforcing ring and a slip ring assembly; the insulating ring and the plastic main body are molded into a whole, and the insulating ring is provided with a limiting part; the reinforcing ring is sleeved on the insulating ring, and an anti-rotation part matched with the reinforcing ring is arranged at a position corresponding to the limiting part on the reinforcing ring and is matched with the limiting part so as to limit the reinforcing ring and the insulating ring to rotate relatively; the slip ring assembly comprises a first copper ring and a second copper ring, the first copper ring is sleeved on the insulating ring, the second copper ring is sleeved on the insulating ring, and the first copper ring and the second copper ring are separated by the reinforcing ring. It can be understood that the insulating ring and the plastic main body are molded into a whole, the insulating ring is provided with the limiting part, the reinforcing ring is sleeved on the insulating ring, the position of the reinforcing ring corresponding to the limiting part is provided with the anti-rotation part matched with the anti-rotation part, and the anti-rotation part is matched with the limiting part so as to limit the relative rotation of the reinforcing ring and the insulating ring, so that the reinforcing ring can rotate along with the plastic main body and the copper ring when the oxide layer on the surface of the copper ring of the slip ring assembly is cut off, the damage to the same part of the reinforcing ring caused by the fact that a cutter always cuts the same part of the reinforcing ring during machining is avoided, and the product percent of pass and the service life of the collecting ring are effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a slip ring according to the present utility model;

FIG. 2 is an exploded view of one embodiment of a slip ring of the present utility model;

FIG. 3 is a schematic view of an insulating ring and a reinforcing ring according to an embodiment of the present utility model;

FIG. 4 is an exploded view of an insulating ring and a reinforcing ring in an embodiment of a slip ring according to the present utility model.

Reference numerals illustrate:

10. a plastic body; 20. an insulating ring; 30. a reinforcing ring; 40. a slip ring assembly; 201. a limit part; 301. an anti-rotation part; 41. a first copper ring; 42. a second copper ring; 202. a notch; 101. a limiting block; 43. a first lead; 44. and a second lead.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a collecting ring which is applied to a generator, in particular to a generator of an electric automobile, and the collecting ring is not limited herein.

Referring to fig. 1 to 4, in an embodiment of the present utility model, the slip ring includes a plastic body 10, an insulating ring 20, a reinforcing ring 30, and a slip ring assembly 40. The insulating ring 20 and the plastic main body 10 are integrally molded, and the insulating ring 20 is provided with a limiting part 201; the reinforcing ring 30 is sleeved on the insulating ring 20, an anti-rotation part 301 matched with the reinforcing ring 30 is arranged on the reinforcing ring 30 at a position corresponding to the limiting part 201, and the anti-rotation part 301 is matched with the limiting part 201 to limit the relative rotation of the reinforcing ring 30 and the insulating ring 20; the slip ring assembly 40 includes a first copper ring 41 and a second copper ring 42, the first copper ring 41 is sleeved on the insulating ring 20 and can be injection molded on the plastic body 10, the second copper ring 42 is sleeved on the insulating ring 20 and can be injection molded on the plastic body 10, and the reinforcing ring 30 separates the first copper ring 41 and the second copper ring 42.

Wherein, plastic main part 10 can be in the injection molding process, and it can be hollow cylindric setting to the cover is established fixedly on the rotor of generator, and the fretwork design can be done to slip ring subassembly 40 one end of keeping away from on the plastic main part 10, in order to reduce the material quantity as far as possible, reduces the cost, and is favorable to the collecting ring fast rotation.

Referring to fig. 3 and 4, in the present embodiment, the limiting portion 201 may be a slot or a hole formed on the insulating ring 20, and the anti-rotation portion 301 may be a rib protruding on the inner sidewall of the reinforcing ring 30. Of course, in some other embodiments, the limiting portion 201 may be a rib protruding on the outer wall of the insulating ring 20, and the anti-rotation portion 301 may be a slot or a hole formed on the inner wall of the reinforcing ring 30.

Referring to fig. 1 and 2, in the present embodiment, the slip ring assembly 40 may further include a first lead 43 and a second lead 44 fixed on the plastic body 10, wherein one end of the first lead 43 is connected to the first copper ring 41, the other end of the first lead 43 extends out of the plastic body 10, one end of the second lead 44 is connected to the second copper ring 42, and the other end of the second lead 44 extends out of the plastic body 10.

It can be appreciated that the insulating ring 20 and the plastic main body 10 are molded into a whole, the insulating ring 20 is provided with the limiting part 201, the reinforcing ring 30 is sleeved on the insulating ring 20, the position, corresponding to the limiting part 201, on the reinforcing ring 30 is provided with the anti-rotation part 301 matched with the limiting part 201, and the anti-rotation part 301 is matched with the limiting part 201 to limit the relative rotation of the reinforcing ring 30 and the insulating ring 20, so that the reinforcing ring 30 can rotate along with the plastic main body 10 and the copper ring when the oxide layer on the copper ring surface of the slip ring assembly 40 is cut, the damage to the same part of the reinforcing ring 30 caused by the fact that a cutter always cuts the same part of the reinforcing ring during machining is avoided, and the product qualification rate and the service life of the collecting ring are effectively improved.

In order to improve the stability of the installation of the insulating ring 20, so as to further improve the product yield and the service life of the collecting ring, referring to fig. 1 to 4, in an embodiment, a notch 202 may be disposed on the inner side of the insulating ring 20, and a stopper 101 may be disposed on the plastic body 10 corresponding to the position of the notch 202, where the stopper 101 is clamped in the notch 202, so as to limit the relative rotation between the insulating ring 20 and the plastic body 10. So, guaranteed the steadiness of insulating ring 20 installation, insulating ring 20 and reinforcing ring 30 can rotate along with plastic main part 10 and copper ring together when the machining, have further restricted insulating ring 20 and plastic main part 10 and have produced relative rotation, avoid insulating ring 20 and plastic main part 10 to break away from to the anti-rotating effect of insulating ring 20 and upper reinforcing ring 30 has been promoted.

In order to avoid exposing the wires, and improve the stability of the current transmission of the collector ring, referring to fig. 2, in an embodiment, the first lead 43 and the second lead 44 are both disposed in the plastic body 10.

In this embodiment, the length of the first lead 43 is longer than the length of the second lead 44 to facilitate wiring.

In this embodiment, the first lead 43 and the first copper ring 41 may be fixed by welding, and the second lead 44 and the second copper ring 42 may be fixed by welding. In this way, the stability of the current transmission can be further ensured.

The utility model also proposes a generator comprising a collecting ring, the specific structure of which refers to the above embodiment, and since the generator proposed by the utility model comprises all the solutions of all the embodiments of the collecting ring described above, it has at least the same technical effects as the collecting ring, not described here.

The utility model also proposes an electric vehicle comprising a generator, the specific structure of which refers to the above and the prior art, and since the electric vehicle according to the utility model comprises all the solutions of all the embodiments of the generator described above, it has at least the same technical effects as the generator, not described here.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A slip ring, the slip ring comprising:

a plastic body;

2. The collecting ring as claimed in claim 1, wherein the limiting part is a clamping groove or a clamping hole formed on the insulating ring, and the anti-rotation part is a convex rib protruding on the reinforcing ring; or alternatively

3. The slip ring of claim 1 wherein the slip ring assembly is injection molded integrally with the plastic body.

4. The slip ring as claimed in claim 1, wherein a notch is provided on an inner side of the insulating ring, a stopper is provided on the plastic body at a position corresponding to the notch, and the stopper is locked in the notch to restrict the insulating ring and the plastic body from rotating relatively.

5. The slip ring of claim 1, wherein the slip ring assembly further comprises a first lead and a second lead respectively fixed on the plastic body, one end of the first lead is connected with the first copper ring, the other end of the first lead extends out of the plastic body, one end of the second lead is connected with the second copper ring, and the other end of the second lead extends out of the plastic body.

6. The slip ring of claim 5, wherein the first lead and the second lead are both disposed within the plastic body.

7. The slip ring of claim 6, wherein the length of the first lead is greater than the length of the second lead.

8. The slip ring of claim 5, wherein the first lead is welded to the first copper ring and the second lead is welded to the second copper ring.

9. A generator comprising a slip ring as claimed in any one of claims 1 to 8.

10. An electric vehicle comprising the generator of claim 9.