Claw pole of automobile generator

Abstract

The utility model relates to an automobile generator claw pole, which comprises a pole claw chassis and a plurality of pole claws, each pole claw comprises a ratchet and a pole claw bottom plate, the pole claws are of an integrated structure, the ratchets are vertically arranged on the outer side of the upper surface of the pole claw bottom plate, the inner side of the pole claw bottom plate is provided with a first limiting groove, and the lower surface of the pole claw bottom plate is provided with a first limiting column. The upper surface of the pole claw base plate is provided with a limiting protrusion matched with the first limiting groove, the upper surface of the pole claw base plate is downwards provided with a second limiting groove matched with the first limiting column, the first limiting groove is matched with the limiting protrusion, the first limiting column is matched with the second limiting groove, and a mode similar to tenon-and-mortise splicing is utilized. The pole claws and the pole claw chassis are fixed, and meanwhile, two-point fixation is formed on a single pole claw, so that the whole structure is relatively stable; the structure is simple, the fixation is firm, the assembly or disassembly is convenient, when the claw pole is damaged and needs to be replaced, only the corresponding part needs to be replaced, and the replacement cost loss can be reduced.

Description

Technical Field

[0001] The utility model relates to a claw pole of an automotive alternator. Background Art

[0002] The claw pole is applied to an automotive alternator. One of the two claw poles is fixed on the rotor shaft of the motor. When the automotive alternator operates, the rotor rotates, and one claw pole drives the other claw pole to rotate. After long-term use, the claw pole will be damaged and needs to be replaced. The existing claw poles are mostly of an integral structure, and the cost of replacing the whole claw pole is high. Summary of the Utility Model

[0003] The purpose of the utility model is to provide one to solve the above problems existing in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] An automotive alternator claw pole, comprising a pole claw chassis and a plurality of pole claws. The pole claw comprises a ratchet tooth and a pole claw bottom plate. The pole claw is of an integral structure. The ratchet tooth is vertically arranged on the outer side of the upper surface of the pole claw bottom plate. A first limiting groove is formed on the inner side of the pole claw bottom plate. A first limiting post is arranged on the lower surface of the pole claw bottom plate. A limiting protrusion matching with the first limiting groove is arranged on the upper surface of the pole claw chassis. A second limiting groove matching with the first limiting post is formed by downward opening on the upper surface of the pole claw chassis.

[0006] The beneficial effect of the utility model is that: through the cooperation of the first limiting groove and the limiting protrusion, and the cooperation of the first limiting post and the second limiting groove, in a way similar to mortise and tenon splicing, the pole claw and the pole claw chassis are fixed. At the same time, two-point fixation is formed on a single pole claw, making the overall structure relatively stable; this structure is simple, firmly fixed, convenient for assembly or disassembly. When the claw pole is damaged and needs to be replaced, only the corresponding part needs to be replaced, which can reduce the cost loss of replacement.

[0007] On the basis of the above technical solution, the utility model can be further improved as follows.

[0008] Further, the upper surface of the pole claw chassis is attached to the lower surface of the pole claw bottom plate, and the outer side surface of the pole claw chassis is coplanar with the outer side surface of the pole claw bottom plate.

[0009] Further, the four side edges of the ratchet tooth are all rounded, and the fillet radius increases sequentially from top to bottom.

[0010] Further, both the first limiting post and the limiting protrusion are arc-shaped.

[0011] Further, tenons and mortises are respectively arranged on both side surfaces of the pole claw bottom plate, and the tenons and mortises of adjacent pole claw bottom plates are matched.

[0012] Furthermore, a limiting hole is provided upward on the lower surface of the pole claw base plate in the downward direction of the ratchet teeth, and a second limiting post matching the limiting hole is provided on the upper surface of the pole claw chassis.

[0013] Furthermore, the symmetry axes of the first limiting groove, the first limiting post, and the limiting hole of a single pole claw are collinear. Description of the Drawings

[0014] Figure 1 is an overall three-dimensional view of a pole claw of an automotive alternator according to the present utility model;

[0015] Figure 2 is a three-dimensional view of a pole claw of an automotive alternator according to the present utility model Figure 1 ;

[0016] Figure 3 is a three-dimensional view of a pole claw of an automotive alternator according to the present utility model Figure 2 ;

[0017] Figure 4 is a three-dimensional view of a pole claw chassis of an automotive alternator according to the present utility model;

[0018] Figure 5 is a sectional view of a pole claw of an automotive alternator according to the present utility model

[0019] In the drawings, the list of components represented by each reference numeral is as follows:

[0020] 1. Pole claw, 11. First limiting post, 12. First limiting groove, 13. Mortise, 14. Tenon, 15. Ratchet teeth, 16. Limiting hole, 17. Pole claw base plate, 2. Pole claw chassis, 21. Second limiting groove, 22. Limiting protrusion, 23. Second limiting post. Detailed Embodiments

[0021] The principles and features of the present utility model will be described below with reference to the drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0022] 2. As Figures 1 to 4 shown, in Embodiment 1 of the present utility model, a pole claw of an automotive alternator includes a pole claw chassis 2 and a plurality of pole claws 1. The pole claw 1 includes ratchet teeth 15 and a pole claw base plate 17. The pole claw 1 is an integral structure. The ratchet teeth 15 are vertically provided on the outer side of the upper surface of the pole claw base plate 17. A first limiting groove 12 is opened inside the pole claw base plate 17. A first limiting post 11 is provided on the lower surface of the pole claw base plate 17. A limiting protrusion 22 matching the first limiting groove 12 is provided on the upper surface of the pole claw chassis 2. A second limiting groove 21 matching the first limiting post 11 is opened downward on the upper surface of the pole claw chassis 2.

[0023] Through the cooperation of the first limiting groove 12 and the limiting protrusion 22, and the cooperation of the first limiting post 11 and the second limiting groove 21, the pole claw 1 and the pole claw chassis 2 are fixed in a way similar to mortise and tenon splicing. At the same time, two-point fixation is formed on a single pole claw 1, making the overall structure relatively stable. This structure is simple, firmly fixed, and convenient for assembly or disassembly. When the pole claw is damaged and needs to be replaced, only the corresponding part needs to be replaced, which can reduce the cost loss of replacement.

[0024] In Embodiment 2 of the present utility model, for a pole claw of an automotive generator, on the basis of Embodiment 1, the upper surface of the pole claw chassis 2 is attached to the lower surface of the pole claw bottom plate 17, and the outer side surface of the pole claw chassis 2 is coplanar with the outer side surface of the pole claw bottom plate 17.

[0025] Ensure that the gap at the splicing part on the surface of the pole claw is tight, make the overall surface of the pole claw smooth, and avoid loosening at the splicing part due to external force, which affects the stability of the overall structure.

[0026] In Embodiment 3 of the present utility model, for a pole claw of an automotive generator, on the basis of Embodiment 1, the four side edges of the ratchet teeth 15 are all rounded, and the fillet radius increases sequentially from top to bottom.

[0027] Reduce the friction between the pole claw and the air during rotation, make the rotation of the pole claw more stable, and reduce the generation of noise.

[0028] As Figures 2 to 4 shown, in Embodiment 4 of the present utility model, for a pole claw of an automotive generator, on the basis of Embodiment 1, both the first limiting post 11 and the limiting protrusion 22 are arc-shaped.

[0029] When the pole claw rotates, the first limiting post 11 and the limiting protrusion 22 will be subject to centrifugal force. The arc-shaped design can make the centrifugal force evenly distributed on the side surface of the corresponding limiting groove, avoiding damage to parts due to uneven force and enhancing the stability of the pole claw.

[0030] As Figure 2 shown, in Embodiment 5 of the present utility model, for a pole claw of an automotive generator, on the basis of Embodiment 1, tenons 14 and mortises 13 are respectively provided on both side surfaces of the pole claw bottom plate 17, and the tenons 14 and mortises 13 of adjacent pole claw bottom plates 17 are matched.

[0031] Enhance the tightness between the pole claws 1, making the overall structure of the pole claw more stable.

[0032] As Figure 3 shown, in Embodiment 6 of the present utility model, for a pole claw of an automotive generator, on the basis of Embodiment 1, a limiting hole 16 is provided upward on the lower surface of the pole claw bottom plate 17 below the ratchet teeth 15, and a second limiting post 23 matching the limiting hole 16 is provided on the upper surface of the pole claw chassis 2.

[0033] A single pole claw 1 forms a three-point fixation on the pole claw chassis 2, dispersing the forces received by each connecting part during rotation and making the overall force on the pole claw more uniform.

[0034] In Embodiment 7 of the present utility model, for an automotive generator pole claw, on the basis of Embodiment 6, the symmetry axes of the first limiting groove 12, the first limiting post 11, and the limiting hole 16 of the single pole claw 1 are collinear, further increasing the firmness of the pole claw structure.

[0035] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A claw pole of an automobile generator, characterized in that: The invention comprises a pole claw chassis (2) and a plurality of pole claws (1), wherein the pole claws (1) comprise ratchet teeth (15) and a pole claw bottom plate (17), wherein the pole claws (1) are of an integrated structure, wherein the ratchet teeth (15) are vertically arranged on the outer side of the upper surface of the pole claw bottom plate (17), wherein a first limiting groove (12) is provided on the inner side of the pole claw bottom plate (17), wherein a first limiting column (11) is provided on the lower surface of the pole claw bottom plate (17), wherein a limiting protrusion (22) matching the first limiting groove (12) is provided on the upper surface of the pole claw chassis (2), and wherein a second limiting groove (21) matching the first limiting column (11) is provided downwardly on the upper surface of the pole claw chassis (2).

2. The claw pole of an automobile generator according to claim 1, characterized in that: The upper surface of the pole claw chassis (2) is in contact with the lower surface of the pole claw bottom plate (17), and the outer side surface of the pole claw chassis (2) is coplanar with the outer side surface of the pole claw bottom plate (17).

3. The claw pole of an automobile generator according to claim 1, characterized in that: The four side edges of the ratchet (15) are all rounded, and the radius of the rounded corners increases from top to bottom.

4. The claw pole of an automobile generator according to claim 1, characterized in that: The first limiting column (11) and the limiting protrusion (22) are both arc-shaped.

5. The claw pole of an automobile generator according to claim 1, characterized in that: Tenons (14) and mortises (13) are respectively provided on two side surfaces of the pole claw bottom plate (17), and the tenons (14) and mortises (13) of adjacent pole claw bottom plates (17) match each other.

6. The claw pole of an automobile generator according to claim 1, characterized in that: The lower surface of the pole claw bottom plate (17) is provided with a limiting hole (16) upwardly located below the ratchet (15), and the upper surface of the pole claw chassis (2) is provided with a second limiting column (23) matching the limiting hole (16).

7. The claw pole of an automobile generator according to claim 6, characterized in that: The symmetry axes of the first limiting groove (12), the first limiting column (11) and the limiting hole (16) of a single pole claw (1) are collinear.

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