Generator coil fixing frame

Abstract

The invention relates to the technical field of coil fixing structures, and discloses a generator coil fixing frame which comprises a base frame, a front end cover arranged on the front face of the base frame and a rear end cover arranged on the back face of the base frame, a stator iron core used for winding a coil is arranged on the inner side of the base frame, and a fixing mechanism is arranged between the stator iron core and the base frame; the fixing mechanism comprises a mounting groove formed in the opening side of the base frame. According to the generator coil fixing frame, the stator iron core is embedded into the base frame in the axial direction, and the insertion rod is inserted into the axial groove, so that the stator iron core is positioned in the base frame, the movement of the stator iron core in the radial direction is limited, the central position of the stator iron core and the central position of the base frame are relatively fixed, and a foundation is provided for locking the position of the insertion rod by the limiting piece; and the situations of screw slipping, loosening and the like caused by transverse movement of the screws due to long-term working vibration when a plurality of screws are used for fixing are avoided, and the difficulty in dismounting the stator iron core is further increased.

Description

Technical Field

[0001] The invention relates to the technical field of coil fixing structures, and in particular to a generator coil fixing frame. Background Art

[0002] With the vigorous development of the new energy vehicle industry, new energy vehicles play an increasingly important role in people's daily travel. Its core power system is highly dependent on the stable and efficient operation of the generator, and the generator stator coil, as a key component, bears the heavy responsibility of electromagnetic conversion. During the long-term driving of the vehicle, the stator coil of the generator in the new energy vehicle is very prone to failure due to various factors such as continuous vibration caused by complex road conditions and thermal effects of current caused by frequent charging and discharging. This inevitably requires maintenance to ensure the normal operation and driving safety of the vehicle. Usually, in the stator assembly link of some generators, considering the cost factor, screws are used to fix the stator core to the inner wall of the motor housing, and epoxy resin or other heat-resistant insulating materials are used for potting to keep the coil stable in the stator slot of the stator core. In this way, the installation of the stator coil is completed.

[0003] When repairing new energy vehicles, due to the compact internal structure of the generator and the small distance between the stator coil and other components, the maintenance personnel have limited operating space. When troubleshooting, repairing or replacing the stator coil, it is difficult to unscrew the screws one by one with tools. The process of disassembling the stator core is relatively cumbersome, and the long-term working vibration may easily cause the screws to move laterally, resulting in slippage, loosening, etc., further increasing the difficulty of disassembly. Summary of the invention

[0004] Technical issues solved In view of the above-mentioned shortcomings of the prior art, the present invention provides a generator coil fixing bracket, which can effectively solve the problem in the prior art that when repairing the stator coil in the new energy vehicle, due to the compact internal structure of the generator, it is difficult to unscrew the screws one by one with tools, and the process of disassembling the stator core is relatively cumbersome.

[0005] Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a generator coil fixing frame, comprising a base frame, a front end cover arranged on the front of the base frame, and a rear end cover arranged on the back of the base frame, characterized in that: a stator core for winding the coil is arranged inside the base frame, and a fixing mechanism is arranged between the stator core and the base frame; The fixing mechanism comprises a mounting groove provided on one side of the base frame opening, and an embedding ring is integrally formed on the outer wall of the stator core, and the shape of the embedding ring is adapted to the shape of the mounting groove; An insert rod is arranged on the outer wall of the embedding ring, an axial groove for inserting the insert rod is opened on the inner wall of the base frame, and a limiting piece for locking the position of the insert rod is arranged in the axial groove.

[0006] Furthermore, the number of the inserted rods is not less than two, and one end of the inserted rod away from the embedded ring is configured as a pointed end.

[0007] Furthermore, the limiting member includes a receiving tube arranged in the inner cavity of the base frame, a clamping tube is arranged on the inner side of the receiving tube, three locking beads are arranged in the clamping tube, and through holes for the insertion rod to pass through are opened on the walls of the receiving tube and the clamping tube.

[0008] Furthermore, one side of the receiving tube is set to be open, and the diameter of the wall of the receiving tube gradually decreases from the opening to the distal end, and the outer diameter of the clamping tube is equal to the minimum inner diameter of the receiving tube.

[0009] Furthermore, a square hole is provided on the wall of the clamping tube for the locking ball to extend out, and the side length of the square hole is smaller than the diameter of the locking ball. A movable cavity is provided on the inner side of the clamping tube for the locking ball to roll, and the minimum gap diameter D2 formed among the three locking balls is smaller than the diameter D1 of the insertion rod.

[0010] Furthermore, a spacer ring is provided on the inner side of the clamping tube, and a first reset member is provided between the outer wall of the spacer ring and the inner wall of the base frame; When the insertion rod is completely inserted into the inner side of the clamping tube, the first reset member is in a compressed state.

[0011] Furthermore, an unlocking mechanism for releasing the locking state of the insertion rod is arranged on the base frame, and the unlocking mechanism includes a magnetic ring arranged on the outside of the clamping tube, and a magnetic rod is slidably connected to the inner cavity of the base frame, and the magnetic rod and the magnetic ring are attracted to each other.

[0012] Furthermore, a sliding block is provided between the two insertion rods, a second reset member is provided between the outer wall of the sliding block and the inner wall of the base frame, and a push rod is slidably connected to the top of the sliding block.

[0013] Furthermore, an unlocking groove is provided on the outer wall of the base frame, and the unlocking groove is in an "L" shape as a whole, and one end of the push rod away from the slider extends to the outside of the unlocking groove.

[0014] Furthermore, a shaft is rotatably arranged at the center of the front end cover via a bearing, and a rotor assembly is arranged on the shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when installing the stator core, the embedding ring is aligned with the installation groove, and then the stator core is embedded in the base frame along the axial direction, and the insertion rod is inserted into the axial groove, so that the stator core is positioned in the base frame, the movement of the stator core in the radial direction is limited, and the center position of the stator core and the center position of the base frame are relatively fixed, which provides a basis for the limiter to lock the insertion rod position, and avoids the use of several screws for fixing. Long-term working vibration is easy to cause the screws to move horizontally, which will cause stripping, loosening, etc., further increasing the difficulty of disassembling the stator core, and making it inconvenient for the later maintenance work of new energy vehicles.

[0016] 2. In the present invention, when the stator core is vibrated during operation and has an axial movement tendency, that is, the insertion rod wants to escape from the clamping tube by itself, it will inevitably need to drive the clamping tube and the locking beads to move toward the side of the front end cover. At this time, the three locking beads will continue to be subjected to the inward pressure of the inner wall of the receiving tube. In this way, the more the insertion rod is vibrated and wants to escape from the axial groove, the greater the squeezing force of the three locking beads on the outer wall of the insertion rod, so that the insertion rod is completely locked and confined in the axial groove.

[0017] 3. In the present invention, after the insertion rod is unlocked, the clamping tube is automatically reset in the inner cavity of the receiving tube under the reset action of the first reset member, and falls to the position farthest from the opening of the receiving tube; and the first reset member applies a pre-tightening force to the clamping tube in a compressed state, and the pre-tightening force makes the outer walls of the three locking beads always against the inner wall of the clamping tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the overall decomposition structure of the embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a base frame according to an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the stator core of an embodiment of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of a base frame according to an embodiment of the present invention; Figure 6 It is a schematic cross-sectional structural diagram of a receiving tube according to an embodiment of the present invention; Figure 7 It is a schematic cross-sectional structural diagram of a clamping sleeve according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the embodiment of the present invention when three lock beads are in contact with each other; Fig. 9 For the embodiment of the present invention Figure 1 A schematic diagram of the structure enlargement at point A; Fig.10 This is a schematic diagram of the structure of a magnetic rod according to an embodiment of the present invention; Fig.11 Schematic diagram of the structure of a slider according to an embodiment of the present invention.

[0020] The numbers in the figure represent: 1. base frame; 2. front end cover; 3. rear end cover; 4. stator core; 5. fixing mechanism; 51. mounting groove; 52. embedding ring; 53. insertion rod; 54. axial groove; 55. receiving tube; 56. clamping tube; 57. locking bead; 58. square hole; 59. spacer ring; 510. first reset member; 6. unlocking mechanism; 61. magnetic ring; 62. magnetic rod; 63. slider; 64. second reset member; 65. push rod; 66. unlocking groove. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] Example 1, reference Figure 1 - Figure 3 , which is the first embodiment of the present invention, provides a generator coil fixing frame, including a base frame 1, a front end cover 2 detachably mounted on the front side of the base frame 1, and a rear end cover 3 detachably mounted on the back side of the base frame 1, a stator core 4 for winding the coil is detachably mounted on the inner side of the base frame 1, a fixing mechanism 5 is arranged between the stator core 4 and the base frame 1, a shaft is rotatably mounted on the center of the front end cover 2 through a bearing, and a rotor assembly is fixedly mounted on the shaft.

[0024] Usually, in the stator assembly process of some generators, considering cost factors, screws are used to fix the stator core 4 to the inner wall of the base frame 1, and epoxy resin or other heat-resistant insulating materials are used for potting to keep the coil stable in the stator slot of the stator core 4. In this way, the installation of the stator coil is completed.

[0025] When the stator coil in the new energy vehicle needs to be overhauled, due to the compact internal structure of the generator, the distance between the stator coil and other components is small, and the operating space for maintenance personnel is limited. When troubleshooting, repairing or replacing the stator coil, it is difficult to unscrew the screws one by one with tools. The process of disassembling the stator core 4 is relatively cumbersome, and the long-term working vibration may easily cause the screws to move laterally, resulting in stripping, loosening, etc., further increasing the difficulty of disassembly and making it inconvenient for the later maintenance work of the new energy vehicle.

[0026] Reference Figure 1 , Figure 3 The fixing mechanism 5 includes a mounting groove 51 opened on one side of the opening of the base frame 1 , and an embedding ring 52 is integrally formed and connected to the outer wall of the stator core 4 , and the shape of the embedding ring 52 is adapted to the shape of the mounting groove 51 .

[0027] An insert rod 53 is welded or fixedly mounted on the outer wall of the embedding ring 52 , and an axial groove 54 for inserting the insert rod 53 is formed on the inner wall of the base frame 1 . A stopper for locking the position of the insert rod 53 is installed in the axial groove 54 .

[0028] Specifically, when installing the stator core 4, align the embedding ring 52 with the installation groove 51, and then embed the stator core 4 into the base frame 1 along the axial direction, and insert the rod 53 into the axial groove 54, so that the stator core 4 is positioned in the base frame 1, limiting the movement of the stator core 4 in the radial direction, ensuring that the center position of the stator core 4 is relatively fixed with the center position of the base frame 1, and providing a basis for the limiter to lock the position of the rod 53, avoiding the use of several screws for fixing, and long-term working vibrations easily causing the screws to move laterally, thereby causing stripping, loosening, etc., further increasing the difficulty of disassembly. At the same time, due to the close fit between the rod 53 and the axial groove 54, the rotation tendency of the stator core 4 in the circumferential direction is also prevented to a certain extent, reducing the possibility of the stator core 4 rotating due to factors such as vibration during operation.

[0029] Example 2, reference Figure 1 - Figure 8, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the number of the insertion rods 53 is not less than two; a cavity for the installation of the receiving tube 55 and the clamping tube 56 is opened in the wall of the base frame 1, and the limiting member includes a receiving tube 55 fixedly installed in the inner cavity of the base frame 1, and a clamping tube 56 is movably installed on the inner side of the receiving tube 55. Three locking beads 57 are installed in the clamping tube 56. The walls of the receiving tube 55 and the clamping tube 56 are penetrated with a hole for the insertion rod. 53 passes through the through hole; the end of the insertion rod 53 away from the embedded ring 52 is polished to a sharp point; one side of the receiving tube 55 is opened in an open shape, and the wall of the receiving tube 55 gradually reduces in diameter from the opening to the distal end, and the outer diameter of the clamping tube 56 is equal to the minimum inner diameter of the receiving tube 55; the wall of the clamping tube 56 is provided with a square hole 58 for the locking bead 57 to extend out, and the side length of the square hole 58 is smaller than the diameter of the locking bead 57, and the inner side of the clamping tube 56 is provided with an active cavity for the locking bead 57 to roll (i.e. Figure 7 The circular cavity shown in FIG. 5 ) has a minimum gap diameter D2 formed between the three locking beads 57 that is smaller than the diameter D1 of the insertion rod 53 .

[0030] Specifically, when the insertion rod 53 is inserted into the clamping tube 56 through the receiving tube 55, the tip of the insertion rod 53 penetrates into the gap between the three locking beads 57. As the insertion rod 53 continues to be inserted, the insertion rod 53 drives the clamping tube 56 to move toward the side of the rear end cover 3, and the three locking beads 57 move synchronously with the clamping tube 56. Since the diameter of the wall of the receiving tube 55 gradually decreases from the opening to the distal end (similar to a conical structure), the three locking beads 57 are squeezed and moved outward during the horizontal movement, so that the insertion rod 53 can continue to be inserted until it is completely inserted into the shaft. The locking state is completed in the groove 54; when the stator core 4 is vibrated during operation and has an axial movement tendency, that is, the insertion rod 53 wants to escape from the clamping tube 56 by itself, it will inevitably need to drive the clamping tube 56 and the locking ball 57 to move toward the side of the front end cover 2. At this time, the three locking balls 57 will continue to be subjected to the inward pressure of the inner wall of the receiving tube 55 (due to the change in diameter). In this way, the more the insertion rod 53 is vibrated and wants to escape from the axial groove 54, the greater the squeezing force of the three locking balls 57 on the outer wall of the insertion rod 53, so that the insertion rod 53 is completely locked and confined in the axial groove 54.

[0031] Reference Figure 6 and Figure 7 A spacer ring 59 is welded or fixedly installed on the inner side of the clamping tube 56, and a first reset member 510 is connected between the outer wall of the spacer ring 59 and the inner wall of the base frame 1; when the insertion rod 53 is fully inserted into the inner side of the clamping tube 56, the first reset member 510 is in a compressed state, but not fully compressed, and is completely compressed when unlocked.

[0032] Specifically, the first reset member 510 is preferably a compression spring that can withstand axial pressure, so that after the subsequent unlocking of the insertion rod 53 is completed, the clamping tube 56 is automatically reset in the inner cavity of the receiving tube 55 under the reset action of the first reset member 510, and falls to the position farthest from the opening of the receiving tube 55; and the first reset member 510 applies a pre-tightening force to the clamping tube 56 in a compressed state, and the pre-tightening force makes the outer walls of the three locking beads 57 always press against the inner wall of the clamping tube 56.

[0033] Example 3, reference Figure 1 - Fig.11 , which is the third embodiment of the present invention. This embodiment is different from the first embodiment in that: the more the insertion rod 53 is vibrated, the more it is unable to escape from the axial groove 54 by itself. At this time, in order to unlock the insertion rod 53, the three locking beads 57 need to be moved toward the side close to the rear end cover 3 so that the gap diameter D2 between the three locking beads 57 becomes larger, or the clamping tube 56 drives the three locking beads 57 to move toward the side close to the rear end cover 3.

[0034] Reference Figure 6 and Fig.10 An unlocking mechanism 6 for releasing the locking state of the insertion rod 53 is installed on the base frame 1. The unlocking mechanism 6 includes a magnetic ring 61 fixedly sleeved on the outside of the clamping tube 56. A magnetic rod 62 is slidably connected to the inner cavity of the base frame 1, and the magnetic rod 62 is attracted to the magnetic ring 61.

[0035] Specifically, since the magnetic rod 62 and the magnetic ring 61 are respectively magnetic, and their relative magnetic poles are opposite poles, when the magnetic rod 62 approaches the magnetic ring 61, the two magnetic rings 61 automatically approach the two magnetic rods 62 under the action of magnetism, so that the clamping tube 56 approaches the side of the magnetic rod 62. In this way, the gap diameter D2 between the three locking beads 57 becomes larger and larger than the diameter D1 of the insertion rod 53, thereby unlocking the insertion rod 53. At this time, the embedded ring 52 can be removed from the installation groove 51, thereby realizing the direct disassembly of the stator core 4, which is convenient for the subsequent maintenance of the stator coil.

[0036] Reference Fig. 9 , Fig.10 and Fig.11 A slider 63 is welded or fixedly installed between the two insertion rods 53, a second reset member 64 is connected between the outer wall of the slider 63 and the inner wall of the base frame 1, and a push rod 65 is slidably connected to the top of the slider 63; an unlocking groove 66 is opened on the outer wall of the base frame 1, and the unlocking groove 66 is generally "L"-shaped, and the end of the push rod 65 away from the slider 63 extends to the outside of the unlocking groove 66.

[0037] Specifically, the second reset member 64 is preferably a compression spring that can withstand axial pressure. When the stator core 4 needs to be disassembled, the slider 63 can be moved by operating the push rod 65, thereby driving the insertion rod 53 and other components to achieve unlocking. After the disassembly operation is completed, the second reset member 64 can provide a reset force for the slider 63 to return it to its initial position, preparing for the next unlocking operation. At the same time, during the operation of the generator, vibrations and the like may occur. The second reset member 64 can use its own elastic force to keep the slider 63 in a relatively stable position, thereby avoiding unnecessary displacement of components such as the magnetic rod 62 due to factors such as vibrations, thereby ensuring the stability and reliability of the entire fixed frame structure.

[0038] Specifically, the "L"-shaped unlocking groove 66 provides a specific movement track and range for the push rod 65. The push rod 65 can slide in the unlocking groove 66 and move along the "L"-shaped path. Compared with a simple straight groove, the "L"-shaped unlocking groove 66 ensures that the unlocking function can only be achieved by pushing the push rod 65 in a specific direction and sequence. To a certain extent, it can prevent the insertion rod 53 from being unlocked prematurely due to accidental touch or misoperation, improve the safety and stability of the entire fixing frame structure under normal working conditions, and avoid equipment failures or safety problems caused by unintended unlocking. The remaining structure is the same as that of Example 2.

[0039] Based on Examples 1-3, the working principle of the present invention is as follows: During installation, align the embedded ring 52 formed integrally on the outer wall of the stator core 4 with the installation groove 51 on the opening side of the base frame 1, and embed it along the axial direction. At the same time, the insert rod 53 is inserted into the axial groove 54 on the inner wall of the base frame 1 to achieve axial and radial positioning of the stator core 4 in the base frame 1, ensuring that the center position is relatively fixed. The insert rod 53 is inserted into the receiving tube 55 and the clamping tube 56, and its tip penetrates into the gap between the three lock beads 57. As it is inserted, it drives the clamping tube 56 to move. Due to the gradual change in the diameter of the receiving tube 55 wall, the lock beads 57 are squeezed and moved outward. After the insert rod 53 is fully inserted, the locking is completed. During vibration, the more the insert rod 53 wants to be separated, the greater the squeezing force of the lock beads 57; the first reset member 510 between the spacer ring 59 and the inner wall of the base frame 1 is compressed when the insert rod 53 is inserted, providing a pre-tightening force to make the lock beads 57 abut against the inner wall of the clamping tube 56, and the clamping tube 56 can be automatically reset after unlocking. When the sub-coil needs to be inspected, first disassemble the base frame 1 and the front end cover 2 to separate the two, thereby exposing the stator core 4, push the push rod 65 twice, so that the slider 63 drives the magnetic rod 62 to move, and utilize the magnetic attraction between the magnetic rod 62 and the magnetic ring 61 fixed on the outer side of the clamping tube 56 to move the clamping tube 56, increase the gap diameter of the locking bead 57 to achieve unlocking, which greatly facilitates the disassembly of the stator core 4 when inspecting the stator coil.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A generator coil fixing frame, comprising a base frame (1), a front end cover (2) arranged on the front side of the base frame (1), and a rear end cover (3) arranged on the back side of the base frame (1), characterized in that: A stator core (4) for winding a coil is arranged inside the base frame (1), and a fixing mechanism (5) is arranged between the stator core (4) and the base frame (1); The fixing mechanism (5) comprises a mounting groove (51) provided on one side of an opening of the base frame (1); an embedding ring (52) is integrally formed on the outer wall of the stator core (4); and the shape of the embedding ring (52) matches the shape of the mounting groove (51); An insertion rod (53) is provided on the outer wall of the embedding ring (52), an axial groove (54) for inserting the insertion rod (53) is provided on the inner wall of the base frame (1), and a limiting member for locking the position of the insertion rod (53) is provided in the axial groove (54).

2. The generator coil fixing frame according to claim 1, characterized in that: The number of the inserted rods (53) provided is no less than two, and one end of the inserted rod (53) away from the embedded ring (52) is provided as a pointed end.

3. The generator coil fixing frame according to claim 2, characterized in that: The limiting member comprises a receiving tube (55) arranged in the inner cavity of the base frame (1), a clamping tube (56) is arranged on the inner side of the receiving tube (55), three locking beads (57) are arranged in the clamping tube (56), and through holes for the insertion rod (53) to pass through are formed through the walls of the receiving tube (55) and the clamping tube (56).

4. The generator coil fixing frame according to claim 3, characterized in that: One side of the receiving tube (55) is arranged to be open, and the diameter of the wall of the receiving tube (55) gradually decreases from the opening to the distal end, and the outer diameter of the clamping tube (56) is equal to the minimum inner diameter of the receiving tube (55).

5. The generator coil fixing frame according to claim 4, characterized in that: A square hole (58) is provided on the wall of the clamping tube (56) for the locking bead (57) to extend out, and the side length of the square hole (58) is smaller than the diameter of the locking bead (57). A movable cavity is provided inside the clamping tube (56) for the locking bead (57) to roll, and the minimum gap diameter D2 formed between the three locking beads (57) is smaller than the diameter D1 of the insertion rod (53).

6. The generator coil fixing frame according to claim 5, characterized in that: A spacer ring (59) is provided on the inner side of the clamping cylinder (56), and a first reset member (510) is provided between the outer wall of the spacer ring (59) and the inner wall of the base frame (1); When the insertion rod (53) is completely inserted into the inner side of the clamping tube (56), the first reset member (510) is in a compressed state.

7. The generator coil fixing frame according to any one of claims 3 to 6, characterized in that: The base frame (1) is provided with an unlocking mechanism (6) for releasing the locking state of the insertion rod (53), the unlocking mechanism (6) comprising a magnetic attraction ring (61) arranged outside the clamping cylinder (56), a magnetic rod (62) being slidably connected to the inner cavity of the base frame (1), and the magnetic rod (62) and the magnetic attraction ring (61) are attracted to each other.

8. The generator coil fixing frame according to claim 7, characterized in that: A sliding block (63) is provided between the two insertion rods (53), a second reset member (64) is provided between the outer wall of the sliding block (63) and the inner wall of the base frame (1), and a push rod (65) is slidably connected to the top of the sliding block (63).

9. The generator coil fixing frame according to claim 8, characterized in that: An unlocking groove (66) is provided on the outer wall of the base frame (1), and the unlocking groove (66) is in an "L" shape as a whole. One end of the push rod (65) away from the slider (63) extends to the outside of the unlocking groove (66).

10. The generator coil fixing frame according to claim 1, characterized in that: A shaft is rotatably arranged at the center of the front end cover (2) via a bearing, and a rotor assembly is arranged on the shaft.

Images