An automobile generator claw pole

Abstract

The utility model discloses a kind of automobile generator claw pole, belong to generator claw pole technical field, its technical key points include axle plate and the axle hole being opened in the surface of the axle plate, the side surface of the axle plate is evenly provided with several claw pole positioning slots, the inside of each claw pole positioning slot is inserted with independent claw pole block, the surface of each independent claw pole block is provided with waist hole, the utility model is designed as multiple independent claw pole block that can be independently adjusted by traditional integrated claw pole, and using the cooperation structure of waist hole and screw rod, the radial extension length of each claw pole block can be accurately controlled, by screw rod drive screw drum and extruding cylinder, it is extruded clamped from the upper and lower sides of independent claw pole block simultaneously, form the locking of large-area friction force of bidirectional stress, this design greatly enhances locking force, effectively prevents the loosening or displacement that independent claw pole block can generate under the complex working condition of generator high-speed operation.

Description

Technical Field

[0001] This utility model belongs to the field of generator claw pole technology, specifically relating to a claw pole for an automotive generator. Background Technology

[0002] Currently, the claw pole is one of the core components of a claw pole motor, and its structure is relatively simple. As part of the rotor core, one method to increase the motor's magnetic flux and output power is to arrange permanent magnet blocks between the two front and rear claw-shaped magnetic poles. These blocks prevent magnetic leakage and provide a reverse magnetic field, effectively increasing the magnetic flux through the motor's armature windings and thus improving the motor's output power. The permanent magnet mounting slots between the two claw poles position the permanent magnet blocks, often requiring additional positioning components.

[0003] A search revealed a Chinese patent with publication number CN216216133U, which discloses a claw pole for an automotive generator, including a claw pole yoke, six interconnected independent claw pole blocks, and a bottom positioning ring. However, traditional fixed-size claw poles may not have a strong enough magnetic field at low speeds, resulting in low power generation efficiency. At high speeds, an excessively strong magnetic field leads to increased iron losses, severe heat generation, and decreased efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a claw pole for an automotive generator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a claw pole for an automotive generator, comprising a shaft plate and a shaft hole formed on the surface of the shaft plate. The side of the shaft plate is uniformly provided with several claw pole positioning grooves, and an independent claw pole block is inserted into the interior of each claw pole positioning groove. A waist hole is formed on the surface of each independent claw pole block. The top surface of the shaft plate is uniformly provided with several limiting holes, and a screw is inserted into the interior of each limiting hole. The interior of the shaft plate is uniformly provided with several positioning holes, and a threaded cylinder is inserted into the interior of each positioning hole. One end of the screw passes through the waist hole and is threadedly connected to the threaded cylinder.

[0006] Preferably, two extrusion grooves are symmetrically formed on both the upper and lower surfaces of the independent claw electrode block, and the threaded cylinder is inserted into the extrusion groove on the bottom surface of the independent claw electrode block and fits against the independent claw electrode block.

[0007] Preferably, an extrusion cylinder is slidably connected inside the extrusion groove located above the independent claw electrode block. The extrusion cylinder is sleeved on the surface of the screw and slidably connected to the screw.

[0008] Preferably, a friction-enhancing layer is provided at the end of the extrusion cylinder adjacent to the threaded cylinder, and the friction-enhancing layer is made of rubber.

[0009] Preferably, the limiting hole is a stepped structure hole with a larger top and a smaller bottom, and the extrusion cylinder is located inside the smaller hole of the limiting hole.

[0010] Preferably, each of the claw pole positioning slots has two slide rails symmetrically arranged inside, the slide rails are fixedly connected to the shaft plate, and the independent claw pole block has a slide groove at the position corresponding to the slide rail, and the independent claw pole block is slidably connected to the slide rail through the slide groove.

[0011] Preferably, a ruler plate is fixedly connected to the top surface of each independent claw electrode block, and several pointers are uniformly fixed on the side of the shaft plate, with each pointer corresponding to a claw electrode positioning groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model designs the traditional one-piece claw pole into multiple independently adjustable claw pole blocks, and utilizes the matching structure of the waist hole and the screw to precisely control the radial extension length of each claw pole block.

[0014] 2. This utility model uses a screw to drive a threaded cylinder and a compression cylinder, which simultaneously squeeze and clamp the independent claw pole block from both the upper and lower sides, forming a large-area frictional locking force under bidirectional force. This design greatly enhances the locking force and effectively prevents the independent claw pole block from loosening or displacing under the complex operating conditions of the generator at high speed, ensuring the uniformity of the air gap and the stability of the motor performance.

[0015] 3. This utility model, through the cooperative design of the slide rail and the slide groove, can pre-position the independent claw pole block in the early stage of installation, preventing it from rotating circumferentially or swaying laterally, thus simplifying the alignment process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the claw pole positioning groove and pointer structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the vertical cross-sectional structure of the independent claw pole block of this utility model;

[0019] Figure 4 This is a schematic diagram of the vertical cross-sectional structure of the shaft plate of this utility model.

[0020] In the diagram: 1. Shaft plate; 2. Shaft hole; 3. Independent claw pole block; 4. Claw pole positioning groove; 5. Limiting hole; 6. Screw; 7. Waist hole; 8. Extrusion groove; 9. Extrusion cylinder; 10. Threaded cylinder; 11. Ruler plate; 12. Pointer; 13. Positioning hole; 14. Slide groove; 15. Slide rail. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a claw pole for an automotive generator, including a shaft plate 1 and a shaft hole 2 formed on the surface of the shaft plate 1. Several claw pole positioning grooves 4 are evenly formed on the side of the shaft plate 1. An independent claw pole block 3 is inserted into the inside of each claw pole positioning groove 4. A waist hole 7 is formed on the surface of each independent claw pole block 3. Several limiting holes 5 are evenly formed on the top surface of the shaft plate 1. A screw 6 is inserted into the inside of each limiting hole 5. Several positioning holes 13 are evenly formed inside the shaft plate 1. A threaded cylinder 10 is inserted into the inside of each positioning hole 13. One end of the screw 6 passes through the waist hole 7 and is threadedly connected to the threaded cylinder 10.

[0023] When it is necessary to position the independent claw pole block 3, first insert the threaded cylinder 10 into the positioning hole 13, then insert the independent claw pole block 3 into the claw pole positioning groove 4 until the independent claw pole block 3 is inserted to an appropriate depth, then insert the screw 6 into the limiting hole 5. The screw 6 will pass through the waist hole 7 and be threadedly connected to the threaded cylinder 10. Subsequently, the threaded cylinder 10 will squeeze the independent claw pole block 3 due to the rotation of the screw 6, thereby limiting the independent claw pole block 3 and realizing the adjustment of the position of the independent claw pole block 3, so that multiple independent claw pole blocks 3 can change to different sizes.

[0024] In this utility model, two extrusion grooves 8 are symmetrically opened on the upper and lower surfaces of the independent claw electrode block 3. The threaded cylinder 10 is inserted into the extrusion groove 8 on the bottom surface of the independent claw electrode block 3 and fits against the independent claw electrode block 3. An extrusion cylinder 9 is slidably connected inside the extrusion groove 8 located above the independent claw electrode block 3. The extrusion cylinder 9 is sleeved on the surface of the screw 6 and slidably connected to the screw 6. A friction enhancement layer is provided at the end of the extrusion cylinder 9 adjacent to the threaded cylinder 10. The friction enhancement layer is made of rubber. The limiting hole 5 is a stepped structure hole with a larger top and a smaller bottom. The extrusion cylinder 9 is located inside the smaller hole of the limiting hole 5.

[0025] After the independent claw electrode block 3 is inserted, the extrusion cylinder 9 is placed inside the limiting hole 5 before being inserted into the limiting hole 5. At this time, the extrusion cylinder 9 and the threaded cylinder 10 are located inside the two extrusion grooves 8 respectively. When the limiting hole 5 is rotated, the extrusion cylinder 9 and the threaded cylinder 10 extrude each other to press the independent claw electrode block 3, thereby locking the position of the independent claw electrode block 3.

[0026] In this utility model, each claw pole positioning groove 4 has two slide rails 15 symmetrically arranged inside. The slide rails 15 and the shaft plate 1 are fixedly connected. The independent claw pole block 3 has a slide groove 14 at the position corresponding to the slide rail 15. The independent claw pole block 3 is slidably connected to the slide rail 15 through the slide groove 14.

[0027] When the independent claw block 3 is inserted into the claw positioning groove 4, the slide rail 15 will be inserted into the slide groove 14 to limit the independent claw block 3, so as to prevent the independent claw block 3 from wobbling left and right when the position of the independent claw block 3 is locked, thus ensuring the stability of the entire device.

[0028] In this utility model, a ruler plate 11 is fixedly connected to the top surface of each independent claw pole block 3, and several pointers 12 are evenly fixed on the side of the shaft plate 1, with each pointer 12 corresponding to the claw pole positioning groove 4.

[0029] To ensure that each independent claw electrode 3 is inserted to a consistent depth, after the independent claw electrode 3 is inserted into the claw electrode positioning groove 4, the position of the pointer 12 pointing to the ruler 11 is observed to ensure that the insertion depth of each independent claw electrode 3 is consistent. In actual operation, the operator can quickly and accurately judge the insertion depth of the independent claw electrode 3 based on this correspondence between the pointer 12 and the ruler 11, without the need for other complex measuring tools, which greatly improves the efficiency and accuracy of installation and further ensures the stability and reliability of the entire device in subsequent use.

[0030] The use of this utility model involves the following steps:

[0031] S1: When it is necessary to position the independent claw pole block 3, first insert the threaded cylinder 10 into the positioning hole 13, then insert the independent claw pole block 3 into the claw pole positioning groove 4 until the independent claw pole block 3 is inserted to an appropriate depth, then insert the screw 6 into the limiting hole 5. The screw 6 will pass through the waist hole 7 and be threadedly connected to the threaded cylinder 10. Subsequently, the threaded cylinder 10 will squeeze the independent claw pole block 3 due to the rotation of the screw 6, thereby limiting the independent claw pole block 3 and realizing the adjustment of the position of the independent claw pole block 3, so that multiple independent claw pole blocks 3 can change to different sizes;

[0032] S2: After the independent claw pole block 3 is inserted, the extrusion cylinder 9 is first placed inside the limiting hole 5 and then inserted into the limiting hole 5. At this time, the extrusion cylinder 9 and the threaded cylinder 10 are respectively located inside the two extrusion grooves 8. When the limiting hole 5 is rotated, the extrusion cylinder 9 and the threaded cylinder 10 extrude each other on the independent claw pole block 3, thereby locking the position of the independent claw pole block 3.

[0033] S3: When the independent claw block 3 is inserted into the claw positioning groove 4, the slide rail 15 will be inserted into the slide groove 14 to limit the independent claw block 3, so as to prevent the independent claw block 3 from wobbling left and right when the position of the independent claw block 3 is locked, thus ensuring the stability of the entire device.

[0034] S4: In order to ensure that the insertion depth of each independent claw electrode block 3 is consistent, after the independent claw electrode block 3 is inserted into the claw electrode positioning groove 4, the position of the pointer 12 pointing to the ruler plate 11 is observed to ensure that the insertion depth of each independent claw electrode block 3 is consistent.

[0035] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A claw pole for an automotive generator, comprising a shaft plate (1) and a shaft hole (2) formed on the surface of the shaft plate (1), characterized in that: The side of the shaft plate (1) is evenly provided with several claw pole positioning grooves (4), and each claw pole positioning groove (4) is provided with an independent claw pole block (3). Each independent claw pole block (3) is provided with a waist hole (7) on its surface. The top surface of the shaft plate (1) is evenly provided with several limiting holes (5), and each limiting hole (5) is provided with a screw (6). The shaft plate (1) is evenly provided with several positioning holes (13), and each positioning hole (13) is provided with a threaded cylinder (10). One end of the screw (6) passes through the waist hole (7) and is threadedly connected to the threaded cylinder (10).

2. The automotive generator claw pole according to claim 1, characterized in that: The independent claw electrode block (3) has two symmetrical extrusion grooves (8) on its upper and lower sides. The threaded cylinder (10) is inserted into the extrusion groove (8) on the bottom surface of the independent claw electrode block (3) and fits against the independent claw electrode block (3).

3. The automotive generator claw pole according to claim 2, characterized in that: An extrusion cylinder (9) is slidably connected inside the extrusion groove (8) located above the independent claw electrode block (3). The extrusion cylinder (9) is sleeved on the surface of the screw (6) and slidably connected to the screw (6).

4. The automotive generator claw pole according to claim 3, characterized in that: The end of the extrusion cylinder (9) adjacent to the threaded cylinder (10) is provided with a friction enhancement layer, and the friction enhancement layer is made of rubber.

5. The automotive generator claw pole according to claim 3, characterized in that: The limiting hole (5) is a stepped structure hole with a larger top and a smaller bottom, and the extrusion cylinder (9) is located inside the smaller hole of the limiting hole (5).

6. The automotive generator claw pole according to claim 1, characterized in that: Each of the claw pole positioning grooves (4) has two slide rails (15) symmetrically arranged inside. The slide rails (15) and the shaft plate (1) are fixedly connected. The independent claw pole block (3) has a groove (14) at the position corresponding to the slide rail (15). The independent claw pole block (3) is slidably connected to the slide rail (15) through the groove (14).

7. The automotive generator claw pole according to claim 1, characterized in that: Each of the independent claw pole blocks (3) has a ruler plate (11) fixedly connected to its top surface, and a number of pointers (12) are evenly fixed on the side of the shaft plate (1), with each pointer (12) corresponding to the claw pole positioning groove (4).

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