Vehicle AC generator rotor collector ring

Abstract

The utility model discloses a vehicle AC generator rotor collector ring comprising a rotor body, the rotor body is provided with a collector ring body, a copper ring on the collector ring body is connected with an excitation coil on the rotor body through a lead, the collector ring body is internally provided with a lead support, one end of the lead support is communicated with the copper ring, and the other end of the lead support is communicated with the excitation coil. The other end of the lead extends to the claw pole groove of the rotor body, and the lead penetrates through the interior of the lead support. The beneficial effects of the utility model are that through welding the welding points of the lead wire support and the excitation coil at the claw pole groove, the length of the excitation coil lead wire of the rotor is shortened, and the processes of forging and pressing the claw pole lead wire groove and coating and heating the epoxy resin of the lead wire in rotor assembly are saved; on the premise of not influencing the performance of the collector ring, the working procedures are reduced, the production time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of slip rings, in particular to a slip ring for a vehicle alternator rotor. Background Art

[0002] The traditional slip ring is composed of a copper ring, an insulating frame, leads and lead brackets. The lead brackets are located below the insulating frame. For the rotor assembly of the existing claw-pole type alternator, the exciting coil is sleeved on the claw pole, and the leads of the exciting coil are protected by insulating sleeves. The two lead grooves forged on the claw pole are connected to the welding points on the lead brackets of the slip ring, and the leads are fixed and coated on the lead grooves with epoxy resin.

[0003] For the slip ring of the vehicle alternator with the above structure, on the back of the claw pole, two lead grooves need to be opened, and after the leads are welded, they need to be fixed and coated with epoxy resin. After coating, they also need to be heated in a heating furnace, which consumes a lot of time in the production process of the alternator rotor and has a high material cost.

[0004] Therefore, aiming at the deficiencies of the prior art, it is very necessary to provide a slip ring for a vehicle alternator rotor to solve the deficiencies of the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a slip ring for a vehicle alternator rotor, eliminating the process of forging two lead grooves on the claw pole. At the same time, the step of fixing and coating the leads with epoxy resin on the lead grooves is simplified to only coating an epoxy resin layer at the welding point of the leads and the exciting coil.

[0006] The above object of the utility model is achieved by the following technical means.

[0007] Provide a slip ring for a vehicle alternator rotor, including a rotor body, a slip ring body is installed on the rotor body. The copper ring on the slip ring body is connected to the exciting coil on the rotor body through leads. An inner lead bracket is installed inside the slip ring body. One end of the lead bracket is communicated with the copper ring, and the other end extends to the claw pole groove of the rotor body. The lead penetrates through the inside of the lead bracket;

[0008] The number of lead brackets is two, and they are symmetrically arranged left and right with the central axis L of the slip ring body as the symmetry axis. Two leads penetrate through the inside of the lead brackets, one end is connected to the copper ring, and the other end extends to the claw pole groove closest to the lead bracket.

[0009] A connecting part is provided at one end of the lead bracket close to the claw pole groove. The top view shape of the connecting part is trapezoidal, and the large-diameter end of the connecting part is communicated with the lead bracket, and the small-diameter end is connected to the claw pole groove.

[0010] One end of the lead bracket close to the copper ring is provided with a bending protection part, and the bending angle of the bending protection part is an obtuse angle or a rounded angle.

[0011] Preferably, an epoxy resin coating is applied to the welding joint of the lead and the exciting coil.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: A collector ring structure of a vehicle alternator rotor, in which the welding point of the lead bracket and the exciting coil is welded at the claw pole groove, shortens the length of the exciting coil lead of the rotor, eliminates the processes of forging the claw pole lead groove and applying and heating the epoxy resin to the lead during rotor assembly, reduces the processes, significantly shortens the production time, and improves the production efficiency without affecting the performance of the collector ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described with reference to the accompanying drawings, but the content in the drawings does not constitute any limitation to the present utility model.

[0014] Figure 1 It is a schematic cross-sectional view of a collector ring of a vehicle alternator rotor according to the present utility model.

[0015] Figure 2 It is a schematic top view of the assembly of a collector ring of a vehicle alternator rotor on the rotor according to the present utility model.

[0016] Figure 3 It is an enlarged schematic view of part A of a collector ring of a vehicle alternator rotor according to the present utility model.

[0017] From Figures 1-3 it includes:

[0018] 1. Rotor body;

[0019] 2. Collector ring body;

[0020] 3. Copper ring;

[0021] 4. Lead;

[0022] 5. Exciting coil;

[0023] 6. Lead bracket;

[0024] 7. Claw pole groove;

[0025] 8. Bending protection part;

[0026] 9. Epoxy resin coating;

[0027] 10. Connecting part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present utility model will be further described in conjunction with the following embodiments.

[0029] Embodiment 1

[0030] As Figures 1-3 shown, the present utility model provides a technical solution: a new type of slip ring for an automotive alternator rotor, comprising a rotor body 1, on which a slip ring body 2 is mounted. The copper ring 3 on the slip ring body 2 is connected to the excitation coil 5 on the rotor body 1 through a lead wire 4.

[0031] A lead wire support 6 is installed inside the slip ring body 2. One end of the lead wire support 6 communicates with the copper ring 3, and the other end extends to the claw pole groove 7 of the rotor body 1. The lead wire 4 penetrates through the inside of the lead wire support 6.

[0032] Because in the present utility model, the slip ring body 2 is directly connected to the excitation coil 5 through the lead wire 4, the process of forging a lead wire groove on the back of the claw pole is omitted. The lead wire 4 penetrates through the inside of the lead wire support 6 and directly reaches the position of the claw pole groove 7 from the copper ring 3 for welding with the excitation coil 5.

[0033] As Figure 1 shown, the lead wire 4 is led out from the copper ring 3 and connected to the excitation coil 5 through wiring design. There are bends in the wiring circuit. The bending angle is the angle formed by the direction after the lead wire support 6 is led out from the copper ring 3 and the vertical direction after turning. The angle of the angle is greater than 90°, forming a bending protection part 8 with an obtuse angle or rounded corner structure to protect the lead wire 4 from being bent and damaged during the rotation of the rotor body 1.

[0034] As Figures 2-3 shown, a connecting part 10 is provided at one end of the lead wire support 6 close to the claw pole groove 7. The connecting part 10 is the position where the lead wire support 6 is connected to the claw pole groove 7. The top view shape of the connecting part 10 is trapezoidal, playing a role in transitioning from a large diameter to a small diameter. The large diameter end of the connecting part 10 communicates with the lead wire support 6, and the small diameter end is connected to the claw pole groove 7.

[0035] As Figures 1-2 shown, the number of lead wire supports 6 is two, and they are symmetrically arranged left and right with the central axis L of the slip ring body 2 as the symmetry axis. The lead wire 4 penetrates through the inside of the two lead wire supports 6. One end is connected to the copper ring 3, and the other end extends to the claw pole groove 7 closest to the lead wire support 6. During installation, the length of the lead wire support 6 from the copper ring 3 led out through wiring design to the claw pole groove 7 for connection with the excitation coil 5 is the shortest, saving materials, saving time, and improving production efficiency.

[0036] As Figures 2-3 shown, epoxy resin material is coated at the welding joint of the lead wire 4 and the excitation coil 5 to form an epoxy resin coating 9, and the welding joint is located on the claw pole groove 7, greatly reducing the time for epoxy resin coating during rotor assembly in the prior art and improving production efficiency.

[0037] In this application, a lead bracket designed in the slip ring of the automotive alternator rotor shortens the length of the rotor excitation coil leads, eliminates the forging process of the claw pole lead grooves, and at the same time, during the rotor assembly process, the epoxy resin coating and heating process of the leads change from coating the entire lead groove in the traditional process to only coating at the welding points, reducing the processes, significantly shortening the production time, and improving the production efficiency.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An automotive alternator rotor slip ring, comprising a rotor body, a slip ring body is mounted on the rotor body, and the copper ring on the slip ring body is connected to the exciting coil on the rotor body through a lead wire, and is characterized in that: A lead support is installed inside the collector ring body. One end of the lead support is communicated with the copper ring, and the other end extends to the claw pole groove of the rotor body. The lead penetrates through the inside of the lead support. There are two lead supports, which are symmetrically arranged left and right with the central axis L of the collector ring body as the symmetry axis. The leads penetrate through the two lead supports, one end is connected to the copper ring, and the other end extends to the claw pole groove closest to the lead support.

2. A collector ring for a vehicle alternator rotor according to claim 1, characterized in that: A connecting portion is provided at one end of the lead support close to the claw pole groove. The top view shape of the connecting portion is trapezoidal, and the large-diameter end of the connecting portion is communicated with the lead support, and the small-diameter end is connected to the claw pole groove.

3. The collector ring of a vehicle alternator rotor according to claim 2, characterized in that: A bending protection portion is provided at one end of the lead support close to the copper ring. The bending angle of the bending protection portion is an obtuse angle or a rounded angle.

4. A collector ring for a vehicle alternator rotor according to claim 3, characterized in that: An epoxy resin coating is applied to the welding portion of the lead and the excitation coil.

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