Water-cooled automobile generator

Abstract

This utility model discloses a water-cooled automotive generator, including a generator body. A quick-connect mechanism is provided at the bottom of the generator body. The quick-connect mechanism includes a support block, a fixing plate, a plug rod, a fixing sleeve, a slider, a locking plate, a locking groove, and a limiting mechanism. The support block is fixed to the bottom surface of the generator body, the fixing plate is fixed to the bottom surface of multiple sets of support blocks, the plug rod is inserted into the fixing plate, the fixing sleeve is inserted into the plug rod, multiple sets of sliders slide within the fixing sleeve, the locking plate is fixed to the bottom end of multiple sets of sliders, and the locking groove is located on the outer wall of the plug rod. The insertion and engagement of the plug rod and the fixing sleeve achieves a quick connection between the generator and the vehicle body. The sliding engagement of the slider within the fixing sleeve, combined with the locking structure of the locking plate and the locking groove, forms a reliable locking system. Operators do not need to use traditional multiple bolts and special tools; they can complete the installation and fixing of the generator simply through insertion and rotation.

Description

Technical Field

[0001] This utility model relates to the field of automotive generator technology, and more specifically, to a water-cooled automotive generator. Background Technology

[0002] In the automotive manufacturing and repair industry, generators, as core components of automotive electrical systems, require frequent installation and disassembly operations at different production stages and maintenance cycles. Especially in application scenarios such as automotive production line assembly, quality inspection, after-sales repair, and generator replacement, technicians need to quickly and efficiently complete the installation and disassembly of generators to meet production cycle and maintenance timeliness requirements. However, water-cooled automotive generators on the market generally use traditional bolt fixing methods. This installation method requires the use of multiple special tools to tighten or loosen multiple bolts one by one. The entire installation process is not only cumbersome, but also requires a high level of technical proficiency from the operators. Especially in the confined space of the engine compartment, some bolt positions are difficult to access, and operators need to use special angles and postures to work. This not only increases the difficulty of operation and time costs, but also easily leads to problems such as stripped bolts or improper installation due to improper operation, affecting the reliability and service life of the generator.

[0003] In the context of the modern automotive industry's pursuit of high efficiency and standardized production, rapid response and convenient operation have become important factors in improving production efficiency and reducing maintenance costs. The installation and disassembly of traditional generators often require multiple people to work together, using specialized tools such as torque wrenches to tighten bolts one by one according to the specified torque. The entire process is time-consuming and prone to inconsistent installation quality due to human factors. In the case of mass production or emergency repairs, the frequent installation and disassembly needs make the limitations of traditional fixing methods more prominent. This not only prolongs the operation time but may also increase the probability of errors due to the complexity of operation. In addition, the complex installation procedure increases the risks of tool loss, bolt loosening, and poor sealing. It also places high demands on the operating environment and personnel skills, further restricting the generator's ability to be deployed quickly in different application scenarios. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a water-cooled automotive generator to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a water-cooled automotive generator, comprising a generator body, wherein a quick-connect mechanism is provided at the bottom end of the generator body, the quick-connect mechanism comprising a support block, a fixing plate, a plug rod, a fixing sleeve, a slider, a locking plate, a locking groove, and a limiting mechanism, the support block being fixed to the bottom surface of the generator body, the fixing plate being fixed to the bottom surface of multiple sets of support blocks, the plug rod being inserted into the fixing plate, the fixing sleeve being inserted into the plug rod, multiple sets of sliders being provided and sliding within the fixing sleeve, the locking plate being fixed to the bottom end of multiple sets of sliders, and the locking groove being provided on the outer wall of the plug rod, the limiting mechanism comprising an abutment block, a limiting sleeve, a mating sleeve, a rotating sleeve, and a threaded sleeve, the abutment block being fixed to the top end of multiple sets of sliders, the limiting sleeve sliding on the outer wall of the fixing sleeve, the mating sleeve being fixed to the bottom surface of the limiting sleeve, the rotating sleeve rotating on the outer wall of the fixing sleeve, and the threaded sleeve being fixed to the top surface of the rotating sleeve and threadedly connected to the mating sleeve.

[0008] The present invention is further configured such that the outer wall of the fixed sleeve is provided with a movable groove, and the movable groove is provided in multiple sets and is slidably connected to multiple sets of abutment blocks respectively. The movable groove provides a precise movement track and guiding constraint for the abutment blocks, ensuring that the abutment blocks can only slide in a controlled manner in the radial direction without deviation or jamming, thereby improving the operational stability and reliability of the locking mechanism.

[0009] The present invention is further configured such that the outer walls of the multiple sets of abutment blocks are all set as inclined surfaces. The inclined surface design makes the limiting sleeve form a wedge-shaped effect when pushing the abutment block, effectively converting the axial thrust into the radial clamping force, enhancing the locking strength between the card plate and the card slot. At the same time, the inclined surface contact reduces frictional resistance, making the locking and releasing process smoother.

[0010] The present invention is further configured such that a guide plate is fixedly provided on the inner side of the limiting sleeve, and a guide groove is provided on the outer wall of the fixed sleeve. Multiple sets of guide grooves and guide plates are provided and slidably connected. The keyway cooperation between the guide plate and the guide groove restricts the rotational freedom of the limiting sleeve, ensuring that the limiting sleeve can only move along the axial direction of the fixed sleeve without rotating, thus ensuring the accuracy of thrust transmission and the effectiveness of the limiting effect.

[0011] The present invention is further configured such that a compression spring is connected between the inner wall of the multiple sets of abutment blocks and the inner wall of the movable groove. The compression spring provides a continuous outward elastic thrust to the abutment blocks, ensuring that the abutment blocks can automatically return to the initial position after the limiting sleeve releases the thrust, thereby realizing the reliable separation of the card plate and the card groove, simplifying the unlocking operation and improving the reliability of the release process.

[0012] The present invention is further configured such that a sliding hole is provided inside the insertion rod, a top block is slidably provided inside the sliding hole, and a compression spring is connected between the top block and the bottom end of the sliding hole. This design allows the top block to be pushed by the elastic force of the compression spring in the unlocked state, thereby automatically separating the fixing sleeve from the insertion rod, avoiding the trouble of manual pulling out, and improving the convenience and automation of disassembly operation.

[0013] The present invention is further configured such that a positioning mechanism is provided on the bottom surface of the rotating sleeve. The positioning mechanism includes a positioning sleeve, a sliding groove, a push spring, a positioning block, and a positioning slot. The positioning sleeve is fixed on the bottom surface of the rotating sleeve. Multiple sets of sliding grooves are provided on the inner wall of the positioning sleeve. The push spring is connected to the inner wall of the multiple sets of sliding grooves. The positioning block is fixed on the top of the multiple sets of push springs and is slidably connected to the multiple sets of sliding grooves respectively. Multiple sets of positioning slots are provided on the outer wall of the fixed sleeve and abut against the multiple sets of positioning blocks respectively. The positioning mechanism provides precise angle positioning and anti-loosening function for the rotating sleeve by pushing the positioning block and positioning slot to abut against each other through the push spring. This ensures that the rotating sleeve will not rotate accidentally due to vibration when locked, and at the same time facilitates accurate operation when unlocking.

[0014] The present invention is further configured such that the tops of the multiple sets of positioning blocks and the positioning grooves are all arc-shaped. The arc-shaped design makes the contact between the positioning blocks and the positioning grooves smoother, reducing the impact and wear during the positioning process, reducing the operating resistance and extending the service life of the positioning mechanism, and improving the comfort and reliability of the positioning operation.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a water-cooled automotive generator, which has the following advantages:

[0017] 1. The quick-installation mechanism, through the combination of support blocks and fixing plates, provides a stable installation foundation for the generator body. The insertion and connection of the plug rod and the fixing sleeve enables a quick connection between the generator and the vehicle body. The sliding cooperation of the slider in the fixing sleeve, combined with the snap-fit ​​structure of the card plate and the card slot, forms a reliable locking system. Operators do not need to use traditional multiple bolts and special tools; they can complete the installation and fixing of the generator simply by plugging and rotating. This modular quick-installation design completely changes the cumbersome and complicated operation process of traditional bolt fixing methods, significantly shortens the installation time, reduces the technical requirements for operators, effectively solves the problem of difficult installation in the confined space of the engine compartment, greatly improves the assembly efficiency of the automobile production line and the convenience of maintenance operations, and provides an efficient and reliable solution for mass production and emergency repairs.

[0018] 2. The limiting mechanism adopts a coordinated design of abutment blocks and limiting sleeves. Through the threaded transmission between the mating sleeve and the threaded sleeve, the rotational motion is converted into axial thrust, achieving precise control of the locking state of the quick-installation mechanism. The inclined design of multiple sets of abutment blocks, combined with the guiding effect of the movable groove, ensures the uniform distribution and stable transmission of thrust. The reset function of the compression spring ensures that each component can reliably return to its original position when unlocking. The sliding connection between the guide plate and the guide groove restricts the movement direction of the limiting sleeve, preventing deflection and jamming. This integrated limiting control system achieves smooth and controllable locking and releasing processes, avoiding the unreliable connection problems caused by uneven torque or improper operation in traditional fixing methods. It ensures the stability and safety of generator installation and provides a durable and reliable guarantee for frequent installation and disassembly operations.

[0019] 3. The positioning mechanism, through the combination design of the positioning sleeve and the sliding groove, and the abutment of the positioning block pushed by the push spring and the positioning groove, provides precise angular positioning and anti-loosening function for the rotating sleeve. The arc-shaped positioning block and positioning groove design makes the positioning process smoother, reducing impact and wear during positioning. The distribution design of multiple sets of positioning blocks ensures uniform distribution of positioning force and reliability of positioning accuracy. In the locked state, this automatic positioning system prevents the rotating sleeve from rotating accidentally through the continuous force of the push spring, effectively avoiding loosening problems in vibration environments. During unlocking, the clever cooperation of the arc surface enables the positioning block to disengage smoothly. The operator only needs to apply appropriate rotational force to overcome the positioning resistance and complete the unlocking operation. This intelligent positioning control mechanism not only improves the operational convenience of the quick-installation mechanism, but also enhances the reliability and durability of the connection, ensuring that the generator maintains a stable installation state under various operating conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a water-cooled automotive generator according to the present invention;

[0021] Figure 2 This is a schematic diagram of the limiting mechanism in this utility model;

[0022] Figure 3 This is a cross-sectional view of the quick-assembly mechanism in this utility model;

[0023] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the insertion rod in this utility model.

[0025] In the diagram: 1. Generator body; 2. Support block; 3. Fixing plate; 4. Insert rod; 5. Fixing sleeve; 6. Slider; 7. Clamping plate; 8. Clamping groove; 9. Abutment block; 10. Limiting sleeve; 11. Mating sleeve; 12. Rotating sleeve; 13. Threaded sleeve; 14. Movable groove; 15. Guide plate; 16. Guide groove; 17. Compression spring; 18. Sliding hole; 19. Top block; 20. Compression spring; 21. Positioning sleeve; 22. Sliding groove; 23. Push spring; 24. Positioning block; 25. Positioning groove. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A water-cooled automotive generator includes a generator body 1. A quick-connect mechanism is provided at the bottom of the generator body 1. The quick-connect mechanism includes a support block 2, a fixing plate 3, a plug rod 4, a fixing sleeve 5, a slider 6, a clamping plate 7, a slot 8, and a limiting mechanism. The support block 2 is fixed to the bottom surface of the generator body 1. The fixing plate 3 is fixed to the bottom surface of multiple sets of support blocks 2. The plug rod 4 is inserted into the fixing plate 3. The fixing sleeve 5 is inserted into the plug rod 4. Multiple sets of sliders 6 slide within the fixing sleeve 5. The clamping plate 7 is fixed to the bottom end of multiple sets of sliders 6. The slot 8 is located on the outer wall of the plug rod 4. The limiting mechanism includes an abutment block 9, a limiting sleeve 10, a mating sleeve 11, a rotating sleeve 12, and a threaded sleeve 13. The abutment block 9 is fixed to the top of multiple sets of sliders 6. The limiting sleeve 10 slides on the outer wall of the fixing sleeve 5. The mating sleeve 11 is fixed to the bottom surface of the limiting sleeve 10. The rotating sleeve 12 rotates on the outer wall of the fixing sleeve 5. The threaded sleeve 13 is fixed to the top surface of the rotating sleeve 12 and threadedly connected to the mating sleeve 11.

[0030] The outer wall of the fixed sleeve 5 is provided with a movable groove 14. The movable groove 14 is provided with multiple sets and is slidably connected to multiple sets of abutment blocks 9 respectively. The movable groove 14 forms a guide track to constrain the movement direction of the abutment blocks 9, so that the abutment blocks 9 can only slide radially and cannot be displaced in other directions, ensuring that the abutment blocks 9 can move accurately inward or outward when subjected to force.

[0031] The outer walls of multiple sets of abutment blocks 9 are all set as inclined surfaces. When the limiting sleeve 10 moves downward, the bottom surface of the limiting sleeve 10 forms a wedge-shaped contact with the inclined surface of the abutment block 9. The inclined surface decomposes the axial thrust of the limiting sleeve 10 into a radial component, pushing the abutment block 9 to slide inward along the movable groove 14 to achieve the clamping function.

[0032] A guide plate 15 is fixedly provided on the inner side of the limiting sleeve 10, and a guide groove 16 is provided on the outer wall of the fixed sleeve 5. Multiple sets of guide grooves 16 and guide plates 15 are provided and slidably connected. The guide plate 15 is embedded in the guide groove 16 to form a keyway connection, which restricts the rotational movement of the limiting sleeve 10 relative to the fixed sleeve 5 and only allows the limiting sleeve 10 to slide along the axial direction of the fixed sleeve 5, ensuring the accurate transmission of thrust.

[0033] Compression springs 17 are connected between the inner walls of multiple sets of abutment blocks 9 and the inner walls of movable grooves 14. Under normal conditions, compression springs 17 are in a pre-compressed state and generate outward elastic force. When the abutment blocks 9 are pushed inward, the compression springs 17 are further compressed to store more elastic potential energy. When the external force disappears, the compression springs 17 release potential energy to push the abutment blocks 9 to reset outward.

[0034] The insertion rod 4 has a sliding hole 18, and a top block 19 is slidably disposed in the sliding hole 18. A compression spring 20 is connected between the top block 19 and the bottom end of the sliding hole 18. When the fixing sleeve 5 is inserted into the insertion rod 4, the top block 19 is pushed into the sliding hole 18 and the compression spring 20 is compressed. When the quick-release mechanism is unlocked, the compression spring 20 rebounds and pushes the top block 19. The top block 19 pushes the fixing sleeve 5 to automatically separate it from the insertion rod 4.

[0035] The bottom surface of the rotating sleeve 12 is provided with a positioning mechanism, which includes a positioning sleeve 21, a sliding groove 22, a push spring 23, a positioning block 24, and a positioning groove 25. The positioning sleeve 21 is fixed to the bottom surface of the rotating sleeve 12. Multiple sets of sliding grooves 22 are provided on the inner wall of the positioning sleeve 21. The push spring 23 is connected to the inner wall of the multiple sets of sliding grooves 22. The positioning block 24 is fixed to the top of the multiple sets of push springs 23 and is slidably connected to the multiple sets of sliding grooves 22 respectively. Multiple sets of positioning grooves 25 are provided on the outer wall of the fixed sleeve 5 and abut against the multiple sets of positioning blocks 24 respectively. The push spring 23 pushes the positioning block 24 to abut against the positioning groove 25 to realize the angle positioning and anti-loosening function of the rotating sleeve 12. The switching between positioning and release is realized by the sliding cooperation of the positioning block 24 in the sliding groove 22.

[0036] The tops of the multiple positioning blocks 24 and the positioning grooves 25 are all set in an arc shape. The arc shape design makes the contact surface of the positioning blocks 24 smoothly transition when entering and leaving the positioning grooves 25, reducing the impact and stress concentration during the positioning process, reducing the operating resistance and making the positioning action smoother and more reliable.

[0037] In this embodiment, multiple sets of plug rods 4 are fixed to the front of the engine compartment. When the generator body 1 needs to be installed, the fixing plate 3 is plugged into the multiple sets of plug rods 4, and then the fixing sleeve 5 is plugged into the top of the plug rod 4. The top block 19 abuts against the fixing sleeve 5 to compress the compression spring 20. Then, the rotating sleeve 12 is rotated to drive the threaded sleeve 13 and the mating sleeve 11 to perform threaded transmission. The mating sleeve 11 pushes the limiting sleeve 10 to slide along the guide groove 16 through multiple sets of guide plates 15. The limiting sleeve 10 pushes multiple sets of abutting blocks 9 to slide along the movable groove 14 and squeeze the compression spring 17. The abutting block 9 pushes the locking plate 7 to engage in the locking groove 8 through the slider 6, so that the fixing sleeve 5 is locked at the top of the plug rod 4 and the fixing plate 3 is pressed by the bottom surface of the fixing sleeve 5. The multiple sets of push springs 23 push the positioning block 24 to abut against the positioning groove 25 to restrict the rotating sleeve 12.

[0038] More specifically, when it is necessary to disassemble the generator body 1, rotating the rotating sleeve 12 causes the positioning sleeve 21 to rotate, pushing the positioning block 24 to slide in the sliding groove 22 through the arc-shaped positioning groove 25 and squeezing the push spring 23, so that the positioning block 24 is disengaged from the positioning groove 25. Continuing to rotate the rotating sleeve 12 causes multiple sets of positioning blocks 24 to move between the positioning grooves 25. The rotating sleeve 12 drives the threaded sleeve 13 to cooperate with the mating sleeve 11, causing the limiting sleeve 10 to slide, so that the limiting sleeve 10 releases its contact with multiple sets of abutting blocks 9. Multiple sets of compression springs 17 reset and push the abutting blocks 9 to slide along the movable groove 14, and the slider 6 pulls the card plate 7 to disengage from the card groove 8. Then, the compression spring 20 resets and pushes the top block 19. The top block 19 pushes the fixed sleeve 5 to release its contact with the plug rod 4, and then the generator body 1 can be disassembled.

[0039] In summary, during the use or operation of the overall equipment: multiple sets of plug rods 4 are fixed to the front of the engine compartment. When the generator body 1 needs to be installed, the fixing plate 3 is inserted into the multiple sets of plug rods 4, and then the fixing sleeve 5 is inserted into the top of the plug rod 4. The top block 19 abuts against the fixing sleeve 5 to compress the compression spring 20. Then, the rotating sleeve 12 drives the threaded sleeve 13 to perform threaded transmission with the mating sleeve 11. The mating sleeve 11 pushes the limiting sleeve 10 to slide along the guide groove 16 through multiple sets of guide plates 15. The limiting sleeve 10 pushes multiple sets of abutting blocks 9 to slide along the movable groove 14 and squeeze the compression spring 17. The abutting block 9 pushes the locking plate 7 to engage in the locking groove 8 through the slider 6, thereby making the fixing sleeve 5 clamped at the top of the plug rod 4 and pressing the fixing plate 3 through the bottom surface of the fixing sleeve 5. The multiple sets of push springs 23 push the positioning block 24 to abut against the positioning groove 25 to restrict the rotating sleeve 12.

[0040] However, when it is necessary to disassemble the generator body 1, rotating the rotating sleeve 12 drives the positioning sleeve 21 to rotate, and pushes the positioning block 24 to slide in the slide groove 22 through the arc-shaped positioning groove 25 and squeezes the push spring 23, so that the positioning block 24 is disengaged from the positioning groove 25. Continuing to rotate the rotating sleeve 12 causes multiple sets of positioning blocks 24 to move between the positioning grooves 25. The rotating sleeve 12 drives the threaded sleeve 13 to cooperate with the mating sleeve 11 and drives the limiting sleeve 10 to slide, so that the limiting sleeve 10 releases the contact of multiple sets of abutting blocks 9. Multiple sets of compression springs 17 reset and push the abutting blocks 9 to slide along the movable groove 14, and pull the locking plate 7 out of the locking groove 8 through the slider 6. Then, the compression spring 20 resets and pushes the top block 19. The top block 19 pushes the fixing sleeve 5 to release the locking with the plug rod 4, and then the generator body 1 can be disassembled.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water-cooled automotive alternator comprising an alternator body (1), characterised in that: The generator body (1) is provided with a quick-installation mechanism at its bottom end. The quick-installation mechanism includes a support block (2), a fixing plate (3), a plug rod (4), a fixing sleeve (5), a slider (6), a locking plate (7), a locking groove (8), and a limiting mechanism. The support block (2) is fixed to the bottom surface of the generator body (1), the fixing plate (3) is fixed to the bottom surface of multiple sets of support blocks (2), the plug rod (4) is inserted into the fixing plate (3), the fixing sleeve (5) is inserted into the plug rod (4), the slider (6) is provided with multiple sets of sliding within the fixing sleeve (5), and the locking plate (7) is fixed to multiple sets of sliding within the fixing sleeve (5). At the bottom of the slider (6), the slot (8) is set on the outer wall of the insert rod (4). The limiting mechanism includes an abutment block (9), a limiting sleeve (10), a mating sleeve (11), a rotating sleeve (12), and a threaded sleeve (13). The abutment block (9) is fixed on the top of multiple sliders (6). The limiting sleeve (10) slides on the outer wall of the fixed sleeve (5). The mating sleeve (11) is fixed on the bottom surface of the limiting sleeve (10). The rotating sleeve (12) rotates on the outer wall of the fixed sleeve (5). The threaded sleeve (13) is fixed on the top surface of the rotating sleeve (12) and is threadedly connected to the mating sleeve (11).

2. A water-cooled automobile generator according to claim 1, characterized by: The outer wall of the fixed sleeve (5) is provided with a movable groove (14), and the movable groove (14) is provided in multiple sets and is slidably connected to multiple sets of abutment blocks (9).

3. A water-cooled automotive alternator as claimed in claim 2, wherein: The outer walls of all the abutment blocks (9) are set as slopes.

4. A water-cooled automotive alternator as claimed in claim 3, wherein: The inner side of the limiting sleeve (10) is fixedly provided with a guide plate (15), and the outer wall of the fixed sleeve (5) is provided with a guide groove (16). The guide groove (16) and the guide plate (15) are provided with multiple sets and are slidably connected.

5. A water-cooled automotive generator according to claim 4, characterized in that: multiple sets Compression springs (17) are connected between the inner wall of the abutment block (9) and the inner wall of the movable groove (14).

6. A water-cooled automotive alternator according to claim 5, wherein: The insert (4) has a sliding hole (18) inside, and a top block (19) is slidably provided inside the sliding hole (18). A compression spring (20) is connected between the top block (19) and the bottom end of the sliding hole (18).

7. A water-cooled automotive alternator according to claim 6, wherein: The bottom surface of the rotating sleeve (12) is provided with a positioning mechanism, which includes a positioning sleeve (21), a sliding groove (22), a push spring (23), a positioning block (24), and a positioning groove (25). The positioning sleeve (21) is fixed on the bottom surface of the rotating sleeve (12). Multiple sets of sliding grooves (22) are provided on the inner wall of the positioning sleeve (21). The push spring (23) is connected to the inner wall of the multiple sets of sliding grooves (22). The positioning block (24) is fixed on the top of the multiple sets of push springs (23) and is slidably connected to the multiple sets of sliding grooves (22). Multiple sets of positioning grooves (25) are provided on the outer wall of the fixed sleeve (5) and are respectively in contact with the multiple sets of positioning blocks (24).

8. A water-cooled automotive alternator according to claim 7, characterized in that: The top of the multiple sets of positioning blocks (24) and the positioning groove (25) are both set to be arc-shaped.

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