Pole claw structure and automobile generator

Abstract

The utility model belongs to the technical field of generator, especially involves pole claw formula generator, the utility model provides a kind of pole claw structure, comprising: pole claw seat, and with the integral forming of pole claw seat extension cylinder, and, radial positioning member;Wherein, the cylinder wall of extension cylinder is radially provided with lock hole, the assembly hole of the lock hole and the assembly shaft radial setting is corresponded through, to be suitable for the radial positioning member and make pole claw seat and assembly shaft locking by wearing;The utility model passes through setting extension cylinder, make it and assembly shaft first by interference fit realizes preliminary positioning and fastening, on this basis, again by the radial positioning member of the lock hole on extension cylinder and the assembly hole on assembly shaft, constructs the double locking connection of " interference fit plus radial bolt", realizes the simultaneous no thread connection, and radial bolt provides strong torsional resistance and circumferential locking capacity.

Description

Technical Field

[0001] This utility model belongs to the field of generator technology, specifically relating to claw-type generators, and more particularly to claw structures and automotive generators. Background Technology

[0002] In the field of generators, the pole claw is a key magnetic circuit component, and the reliability of its connection with the rotor shaft directly affects the generator's operational stability and service life. Traditionally, the connection between the pole claw and the rotor shaft is mostly achieved by threaded connection, which is fixed by tightening bolts or nuts.

[0003] However, during installation, in pursuit of assembly stability, operators often tighten the threaded connections very tightly. This can easily lead to plastic deformation or even damage to the thread grooves, and may also cause micro-cracks in the pole claws or rotor shaft due to excessive force. More seriously, during later generator maintenance, the excessive tightening force of the threaded connections can easily cause further damage to the threads during disassembly, such as stripping or breaking of the thread teeth.

[0004] When the threads are damaged, it is difficult to ensure the tightness of the connection during reinstallation. As a result, during generator operation, especially under high-speed rotation and vibration conditions, the pole claws and rotor shaft are prone to loosening. This loosening will cause the generator's electromagnetic performance to be unstable, generate abnormal noise and vibration, reduce power generation efficiency, and in severe cases, even cause mechanical failure, resulting in generator shutdown and economic losses to users.

[0005] Therefore, how to avoid generator failure caused by loose connection between pole claw and shaft is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one pole claw structure and an automotive generator to solve the technical problem of generator failure caused by loose connection between the pole claw and the shaft.

[0008] In a first aspect, the present disclosure provides a pole claw structure, including: a pole claw seat, an extension cylinder integrally formed with the pole claw seat, and a radial positioning member; wherein, the extension cylinder has a locking hole radially formed in its wall, and the locking hole corresponds to and communicates with the assembly hole radially provided on the assembly shaft, so as to facilitate the radial positioning member to pass through and lock the pole claw seat and the assembly shaft.

[0009] In one optional embodiment, the radial positioning element includes a pair of long pins, each long pin having an insertion end; the cross-section of the pair of long pins after being joined matches the inner contour of the locking hole and the assembly hole, and is a regular polygon; wherein the insertion end of each long pin is adapted to be inserted inward from both sides of the locking hole and extend into the assembly hole.

[0010] In one alternative embodiment, the long pin has a stop piece on its end face away from the insertion end, the cross-sectional profile of the stop piece matching the inner profile of the locking hole and the assembly hole; wherein, when a pair of long pins are inserted, the stop piece on one of the long pins is adapted to abut against the insertion end of the other long pin.

[0011] In one alternative embodiment, the pole claw seat has a textured surface on the side facing the motor winding frame.

[0012] In one alternative implementation, the textured surface is a knurled surface or a milled texture.

[0013] Secondly, this disclosure also provides an automotive generator, including: an assembly shaft; a winding frame sleeved on the assembly shaft; and a pair of pole claw structures disposed on the assembly shaft on both sides of the winding frame; the pole claw structure includes: a pole claw seat, the side of the pole claw seat facing the winding frame having a textured surface, and the textured surfaces on the pair of pole claw seats respectively abutting against the two end faces of the winding frame.

[0014] In one alternative implementation, the textured surface is a knurled surface or a milled texture.

[0015] In one optional embodiment, the surface of the assembly shaft is provided with an assembly hole in the radial direction; an extension cylinder is integrally connected to one side of the pole claw seat, and the cylinder wall of the extension cylinder is provided with a locking hole in the radial direction; the generator further includes: a radial positioning component; wherein the locking hole and the assembly hole are correspondingly connected to each other, so as to be suitable for the radial positioning component to pass through and lock the pole claw seat and the assembly shaft.

[0016] In one optional embodiment, the radial positioning element includes a pair of long pins, each long pin having an insertion end; the cross-section of the pair of long pins after being joined matches the inner contour of the locking hole and the assembly hole, and is a regular polygon; wherein the insertion end of each long pin is adapted to be inserted inward from both sides of the locking hole and extend into the assembly hole.

[0017] In one alternative embodiment, the long pin has a stop piece on its end face away from the insertion end, the cross-sectional profile of the stop piece matching the inner profile of the locking hole and the assembly hole; wherein, when a pair of long pins are inserted, the stop piece on one of the long pins is adapted to abut against the insertion end of the other long pin.

[0018] The beneficial effects of this utility model are: 1. By setting an extension tube, it is initially positioned and fastened to the assembly shaft through an interference fit. On this basis, a radial positioning component that penetrates the locking hole on the extension tube and the assembly hole on the assembly shaft is used to construct a double locking connection of "interference fit plus radial pin", which solves the problem of generator failure caused by loose connection between the pole claw and the shaft. 2. By setting an integral molding structure for the pole claw seat and the extension cylinder, magnetic circuit optimization and mechanical strength improvement are achieved; 3. By setting the inner contour of the locking hole and the assembly hole as a regular polygon, a rigid connection with resistance to torsion and vibration is obtained, further enhancing the stability of motor operation; 4. By setting a textured surface, the risk of axial loosening is reduced.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A perspective view of the connection state between the pole claw structure, the winding frame, and the assembly shaft provided in the embodiments of this disclosure; Figure 2 This is a perspective cross-sectional view of the pole claw structure and the connection state between the assembly shaft and the radial positioning component provided in the embodiments of this disclosure; Figure 3 A perspective view of the pole claw structure provided in the embodiments of this disclosure; Figure 4 This is a perspective view of a radial positioning element provided in an embodiment of this disclosure.

[0023] In the picture: 1. Pole claw structure; 11. Pole claw seat; 12. Extension tube; 13. Locking hole; 14. Textured surface; 2. Assembly shaft; 21. Assembly hole; 3. Winding frame; 4. Radial positioning component; 41. Long pin; 42. Stop piece; 43. Insertion end. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed the following drawbacks of existing technologies: During installation, in pursuit of assembly stability, operators often tighten threaded connections excessively. This not only easily leads to plastic deformation or even damage to the thread grooves, but may also cause micro-cracks in the pole claws or rotor shaft due to excessive stress. More seriously, during later generator maintenance, the excessive tightening force of the threaded connections can easily cause further damage to the threads during disassembly, such as stripping or breakage of the thread teeth.

[0030] When the threads are damaged, it is difficult to ensure the tightness of the connection during reinstallation. As a result, during generator operation, especially under high-speed rotation and vibration conditions, the pole claws and rotor shaft are prone to loosening. This loosening will cause the generator's electromagnetic performance to be unstable, generate abnormal noise and vibration, reduce power generation efficiency, and in severe cases, even cause mechanical failure, resulting in generator shutdown and economic losses to users.

[0031] Therefore, how to avoid generator failure caused by loose connection between pole claw and shaft is a technical problem that urgently needs to be solved in this field.

[0032] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] like Figures 1 to 4As shown, some embodiments provide a pole claw structure, including: a pole claw seat 11, and an extension tube 12 integrally formed with the pole claw seat 11. The pole claw seat 11 is the core component of the pole claw structure and is usually made of a high magnetic permeability material (such as silicon steel or low carbon steel) to form the magnetic poles of the generator and guide the magnetic flux path. The pole claw seat 11 is designed in a disk shape, and its central area is integrally formed with the extension tube 12 to ensure structural integrity. The diameter and thickness of the pole claw seat 11 are optimized according to the power requirements of the generator to balance magnetic circuit efficiency and mechanical strength.

[0036] As a magnetic circuit carrier, the integrated design of the pole claw seat 11 avoids the gap problem in the traditional split connection, reduces magnetic resistance, and increases magnetic flux density. In addition, the integral molding of the pole claw seat 11 and the extension tube 12 eliminates the loosening points that may be caused by bolt connection, reducing the risk of fatigue cracks caused by vibration. At the same time, the pole claw seat 11 is combined with the textured surface 14, and the pole claw seat 11 can effectively transmit axial pressure, ensure close contact with the winding skeleton 3, and prevent relative slippage.

[0037] The extension cylinder 12 is a cylindrical structure extending axially from the center of the pole claw seat 11. It is usually made of the same material as the pole claw seat 11 and integrally formed by forging or casting. The inner diameter of the extension cylinder 12 matches the outer diameter of the assembly shaft 2 to form an interference fit or clearance fit for easy installation. The length of the extension cylinder 12 is designed according to the axial space of the generator to ensure that it can cover the critical section of the assembly shaft 2.

[0038] The function of the extension sleeve 12 is to expand the contact area between the pole claw seat 11 and the assembly shaft 2, and provide radial support. Its integrated design avoids micro-cracks caused by stress concentration in traditional threaded connections, and extends the service life of the components. Through the extension sleeve 12, the locking hole 13 can be set in the radial position of the sleeve wall, so that the radial positioning component 4 can uniformly transmit torque and radial force, and reduce local stress.

[0039] The locking hole 13 is a through hole radially opened on the wall of the extension cylinder 12. Its axis is perpendicular to the radial direction of the assembly shaft 2. The inner contour of the locking hole 13 is machined into a regular polygon (such as a hexagon or a square) to ensure that it matches the shape of the radial positioning part 4. The size of the locking hole 13 is precisely calculated to avoid loosening or interference due to tolerance.

[0040] It should be further explained that the locking hole 13 serves as the installation channel for the radial positioning component 4. Its regular polygonal inner contour can effectively prevent the positioning component from rotating and achieve circumferential locking. This eliminates the common problem of stripping threads in threaded connections, and high torque tightening is not required during installation, reducing assembly difficulty. The corresponding connection between the locking hole 13 and the assembly hole 21 ensures that the shear force is evenly distributed, improving vibration resistance.

[0041] In addition, the fit between the locking hole 13 and the assembly hole 21 is the basis for the operation of the radial positioning component 4, and the shape of the insertion end 43 of the long pin 41 is consistent with the inner contour of the locking hole 13, ensuring a seamless connection.

[0042] The assembly hole 21 is a through hole radially provided on the surface of the assembly shaft 2. Its position corresponds precisely to the locking hole 13. The assembly hole 21 also has a regular polygonal inner contour and its depth extends through the radial direction of the assembly shaft 2 to accommodate the radial positioning part 4. When machining the assembly hole 21, it is necessary to ensure its perpendicularity to the axis to avoid stress eccentricity.

[0043] Specifically, the assembly hole 21 and the locking hole 13 together form a continuous locking channel, allowing the radial positioning component 4 to pass through the extreme claw seat 11 and the assembly shaft 2 simultaneously, forming a mechanical interlock. This design changes the connection point from axial thread to radial pin connection, avoiding the problem of excessive axial preload and reducing the risk of bending of the assembly shaft 2. The regular polygonal inner contour of the assembly hole 21 enhances the anti-torsion capability, ensuring that the connection does not loosen under high-speed rotation.

[0044] The assembly hole 21 is the final anchoring point of the radial positioning component 4. Its connection with the locking hole 13 enables the synchronous fixing of the pole claw structure 1 and the assembly shaft 2, thereby improving the overall rigidity.

[0045] The radial positioning element 4 is a key component of the connection system. It consists of a pair of long pins 41, each of which is a semi-polygonal column. When assembled, they form a complete regular polygonal cross section. The radial positioning element 4 is made of high-strength alloy steel and its surface can be heat-treated to enhance its wear resistance.

[0046] The radial positioning component 4 locks the claw seat 11 and the assembly shaft 2 together by radial insertion, replacing the traditional axial bolt. Its regular polygonal cross section matches the inner contour of the locking hole 13 and the assembly hole 21, achieving a clearance-free fit and effectively transmitting torque and radial force. This design avoids the risk of plastic deformation in threaded connections, and disassembly only requires pulling out the long pin 41 from both sides, making maintenance more convenient. The symmetrical distribution of the radial positioning component 4 makes the force uniform and reduces stress concentration.

[0047] Radial positioning component 4; wherein, the extension cylinder 12 has a locking hole 13 radially opened on its cylinder wall, and the locking hole 13 is connected to the mounting hole 21 radially arranged on the mounting shaft 2, so as to facilitate the radial positioning component 4 to pass through and lock the pole claw seat 11 and the mounting shaft 2.

[0048] The radial positioning element 4 includes a pair of long pins 41, each long pin 41 having an insertion end 43; the cross-section of the pair of long pins 41 after being joined matches the inner contour of the locking hole 13 and the assembly hole 21, and is a regular polygon; wherein, the insertion end 43 of each long pin 41 is adapted to be inserted inward from both sides of the locking hole 13 and extend into the assembly hole 21.

[0049] The long pin 41 is a component of the radial positioning part 4. Each long pin 41 is a slender rod with a length slightly greater than the sum of the depths of the locking hole 13 and the mounting hole 21 to ensure complete penetration. The insertion end 43 of the long pin 41 is machined into a bevel or arc for easy insertion. The cross-section of the long pin 41 is a semi-regular polygon so that a pair of long pins 41 fill the entire locking channel when they are joined together.

[0050] The insertion end 43 of the long pin 41 is designed to reduce installation resistance and allow easy insertion from both sides. Its splicing structure eliminates the need for special tools during installation, reducing assembly time. The regular polygonal cross-section of the long pin 41 provides high shear strength, which can withstand the impact loads during generator start-up and speed change. The long pin 41, combined with the stop piece 42, can also prevent axial displacement and ensure long-term stability.

[0051] The insertion end 43 is the end area of ​​the long pin 41, which is usually machined into a tapered or chamfered shape to reduce friction during insertion. The surface smoothness of the insertion end 43 is required to prevent scratching the hole wall. The guiding design of the insertion end 43 allows the long pin 41 to smoothly enter the locking hole 13 and the assembly hole 21. Even if there is a slight misalignment, it can be adaptively adjusted, which reduces the assembly alignment accuracy requirements and improves production efficiency. The tapered structure of the insertion end 43 can also remove burrs during the insertion process and protect the integrity of the hole wall. Specifically, the cooperation between the insertion end 43 and the stop piece 42 ensures the final positioning of the long pin 41 and prevents over-insertion or loosening.

[0052] The long pin 41 has a stop piece 42 on its end face away from the insertion end 43. The cross-sectional profile of the stop piece 42 matches the inner profile of the locking hole 13 and the assembly hole 21. When a pair of long pins 41 are inserted, the stop piece 42 on one long pin 41 is adapted to abut against the insertion end 43 of the other long pin 41. The insertion end 43 of the long pin 41 abuts against the stop piece 42 of the other long pin 41, forming a self-locking mechanism to avoid the phenomenon of gradual disengagement under vibration. In other words, the long pin 41 and the stop piece 42 of the radial positioning member 4 work together to ensure that they will not be accidentally loosened after installation. At the same time, they form multiple insurances with the textured surface 14 to improve the reliability of the connection.

[0053] The stop piece 42 is a protruding structure fixed to the end of the long pin 41 away from the insertion end 43. Its cross-sectional profile is consistent with the inner profile of the locking hole 13 and the assembly hole 21. It is usually connected to the long pin 41 by welding or integral molding. The thickness of the stop piece 42 is moderate, which can provide a stopping function without interfering with the surrounding parts.

[0054] It should be further explained that the stop piece 42, as a mechanical limiting component, when a pair of long pins 41 are inserted into place, the stop piece 42 of one long pin 41 abuts against the insertion end 43 of the other long pin 41, forming an interlock. This prevents the long pins 41 from moving inward or outward under vibration, ensuring the permanence of the connection. The regular polygonal contour of the stop piece 42 also plays an anti-rotation role, further enhancing circumferential stability. The fit between the stop piece 42 and the locking hole 13 makes the surface flat after installation, reducing wind resistance and noise, and is suitable for high-speed generators.

[0055] The pole claw seat 11 has a textured surface 14 on the side facing the motor winding frame 3. The textured surface 14 is a knurled surface or a milled texture. The textured surface 14 is a surface texture processed on the side of the pole claw seat 11 facing the motor winding frame 3. It can be a knurled surface (formed by rolling) or a milled texture (processed by a milling machine). The pattern of the textured surface 14 is usually a cross grid or a wave shape, with a depth between 0.1-0.5 mm, in order to increase the surface roughness.

[0056] The textured surface 14 increases the friction coefficient of the contact surface, creating a micro-mechanical interlock between the pole claw seat 11 and the winding skeleton 3, preventing axial sliding. This reduces the clamping force required for traditional planar contact, avoids deformation caused by over-assembly, and the textured surface 14 can also accommodate a small amount of lubricating oil, maintaining stability during thermal expansion and contraction, and reducing noise and wear.

[0057] The textured surface 14 works in conjunction with the radial positioning element 4 to provide a second layer of axial locking, which compensates for the inadequacy of the radial connection and ensures that the position of the pole claw structure 1 is maintained under vibration.

[0058] Some embodiments provide an automotive generator, including: an assembly shaft 2; and a winding bobbin 3, which is sleeved on the assembly shaft 2. The winding bobbin 3 is an electromagnetic component of the generator, typically made of insulating material, and is sleeved on the assembly shaft 2 for winding an excitation coil. The two ends of the winding bobbin 3 are flat and contact the textured surface 14 of the pole claw seat 11. The introduction of the textured surface 14 enhances the contact reliability, prevents changes in magnetic gap due to loosening, and thus improves the power generation efficiency.

[0059] A pair of pole claw structures 1 are disposed on the assembly shafts 2 on both sides of the winding frame 3; the pole claw structure 1 includes: a pole claw seat 11, the side of the pole claw seat 11 facing the winding frame 3 is provided with a textured surface 14, and the textured surfaces 14 on the pair of pole claw seats 11 respectively abut against the two end faces of the winding frame 3; the textured surface 14 is a knurled surface or a milled texture.

[0060] The surface of the assembly shaft 2 is radially provided with an assembly hole 21; an extension cylinder 12 is integrally connected to one side of the pole claw seat 11, and a locking hole 13 is radially provided on the cylinder wall of the extension cylinder 12; the generator also includes a radial positioning component 4; wherein the locking hole 13 is correspondingly connected to the assembly hole 21, so as to be suitable for the radial positioning component 4 to pass through and lock the pole claw seat 11 and the assembly shaft 2.

[0061] The radial positioning element 4 includes a pair of long pins 41, each long pin 41 having an insertion end 43; the cross-section of the pair of long pins 41 after being joined matches the inner contour of the locking hole 13 and the assembly hole 21, and is a regular polygon; wherein, the insertion end 43 of each long pin 41 is adapted to be inserted inward from both sides of the locking hole 13 and extend into the assembly hole 21.

[0062] The long pin 41 has a stop piece 42 on its end face away from the insertion end 43. The cross-sectional profile of the stop piece 42 matches the inner profile of the locking hole 13 and the assembly hole 21. When a pair of long pins 41 are inserted into place, the stop piece 42 on one long pin 41 is adapted to abut against the insertion end 43 of the other long pin 41.

[0063] During assembly, first, one pole claw structure 1 is fitted onto the assembly shaft 2, then the winding bobbin 3 is fitted onto the assembly shaft 2. Finally, the other pole claw structure 1 is fitted onto the assembly shaft 2 from the other side, so that the textured surface 14 of the pole claw seat 11 abuts against the end face of the winding bobbin 3. Next, the locking hole 13 of the extension tube 12 is aligned with the assembly hole 21 of the assembly shaft 2; long pins 41 are inserted from both sides, and the insertion end 43 of the long pins 41 is easily pushed into the hole (e.g., Figure 3 (From F1 and F2 in the middle) until a pair of long pins 41 are fully assembled, and the stop piece 42 of one long pin 41 abuts against the insertion end 43 of the other long pin 41 to form a self-locking mechanism. When disassembling, simply pull out the long pins 41 from both sides without having to loosen them by force.

[0064] In summary, this utility model achieves magnetic circuit optimization and mechanical strength enhancement by setting the pole claw seat 11 and the extension tube 12 as an integrally formed structure; it obtains a rigid connection that is resistant to torsion and vibration by setting the inner contour of the locking hole 13 and the assembly hole 21 as regular polygons; it improves assembly convenience and maintainability by setting the radial positioning component 4, which includes a pair of long pins 41 and a stop piece 42; and it reduces the risk of axial loosening by setting the textured surface 14.

[0065] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0066] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0067] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pole claw structure, characterized in that, include: Extreme Claw (11), and An extension tube (12) integrally formed with the pole claw seat (11), and, Radial positioning component (4); Among them, the extension tube (12) has a locking hole (13) radially opened on the tube wall. The locking hole (13) is connected to the assembly hole (21) radially arranged on the assembly shaft (2) so as to allow the radial positioning part (4) to pass through and lock the pole claw seat (11) and the assembly shaft (2).

2. The pole claw structure as described in claim 1, characterized in that, The radial positioning element (4) includes a pair of long pins (41) having an insertion end (43). The cross-section of the pair of long pins (41) after being joined together matches the inner contour of the locking hole (13) and the assembly hole (21), and is a regular polygon; The insertion end (43) of each long pin (41) is adapted to be inserted into the locking hole (13) from both sides and extend into the assembly hole (21).

3. The pole claw structure as described in claim 2, characterized in that, The long pin (41) has a stop piece (42) on its end face away from the insertion end (43), and the cross-sectional profile of the stop piece (42) matches the inner profile of the locking hole (13) and the assembly hole (21). When a pair of long pins (41) are inserted into place, a stop piece (42) on one of the long pins (41) is adapted to abut against the insertion end (43) of the other long pin (41).

4. The pole claw structure as described in claim 1, characterized in that, The pole claw seat (11) has a textured surface (14) on the side facing the motor winding frame (3).

5. The pole claw structure as described in claim 4, characterized in that, The textured surface (14) is a knurled surface or a milled texture.

6. A car generator, characterized in that, include: Assembly shaft (2); The winding frame (3) is sleeved on the assembly shaft (2); A pair of pole claw structures (1) are set on the assembly shafts (2) on both sides of the winding frame (3); The pole claw structure (1) includes: a pole claw seat (11), the pole claw seat (11) having a textured surface (14) on one side facing the winding frame (3), and the textured surfaces (14) on a pair of pole claw seats (11) respectively abutting against the two end faces of the winding frame (3).

7. The automotive generator as described in claim 6, characterized in that, The textured surface (14) is a knurled surface or a milled texture.

8. The automotive generator as described in claim 6, characterized in that, The surface of the assembly shaft (2) is provided with an assembly hole (21) in the radial direction; An extension tube (12) is integrally connected to one side of the pole claw seat (11), and a locking hole (13) is radially opened on the tube wall of the extension tube (12). The generator also includes: a radial positioning element (4); The locking hole (13) and the assembly hole (21) are connected to each other to accommodate the radial positioning member (4) so ​​that the claw seat (11) and the assembly shaft (2) are locked.

9. The automotive generator as described in claim 8, characterized in that, The radial positioning element (4) includes a pair of long pins (41) having an insertion end (43). The cross-section of the pair of long pins (41) after being joined together matches the inner contour of the locking hole (13) and the assembly hole (21), and is a regular polygon; The insertion end (43) of each long pin (41) is adapted to be inserted into the locking hole (13) from both sides and extend into the assembly hole (21).

10. The automotive generator as described in claim 9, characterized in that, The long pin (41) has a stop piece (42) on its end face away from the insertion end (43), and the cross-sectional profile of the stop piece (42) matches the inner profile of the locking hole (13) and the assembly hole (21). When a pair of long pins (41) are inserted into place, a stop piece (42) on one of the long pins (41) is adapted to abut against the insertion end (43) of the other long pin (41).

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