A rotor mounting mechanism for use in a micromotor

Abstract

This utility model discloses a rotor mounting mechanism for a micro motor, including a fixed shaft. Two limiting plates are fixedly connected to the outer wall of the fixed shaft. A first circular plate is fixedly connected to one side of the fixed shaft. Four positioning rods in a square arrangement are fixedly connected to the first circular plate near the fixed shaft. A rotor is fitted onto the fixed shaft. The rotor has four first positioning holes that mate with the positioning rods. A second circular plate is fitted onto the end of each of the four positioning rods away from the first circular plate. The second circular plate has four second positioning holes that mate with the positioning rods. Two mounting grooves are formed on the second circular plate, and sliding plates are installed within these grooves. A triangular plate and two trapezoidal plates are fixedly connected to the two sliding plates on their adjacent sides, with the trapezoidal plates positioned on one side of the triangular plate. This utility model effectively simplifies the installation and disassembly process of the rotor, making subsequent rotor maintenance more convenient and thus improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of micro motor rotor mounting technology, and in particular to a rotor mounting mechanism for micro motors. Background Technology

[0002] Micro motors are small, low-power electric motors that are widely used in various small devices and systems, such as car seats, to adjust the position and backrest angle of the car seat. The main types are lifting, leveling, angle-adjusting, and tilting motors, and their manufacturing processes are basically the same.

[0003] Currently, most micro motor rotors on the market are directly mounted on the surface of the micro motor shaft, and are mostly fixed to the micro motor shaft by bonding or welding. This method is very difficult to operate and is not convenient for installing and disassembling the rotor. If the rotor is damaged or needs to be replaced later, the disassembly work will become complicated and may also damage the shaft. Therefore, it is necessary to design a rotor mounting mechanism for micro motors to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a rotor mounting mechanism for micro motors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A rotor mounting mechanism for a micro motor includes a fixed shaft. Two limiting plates are fixedly connected to the outer wall of the fixed shaft. A first circular plate is fixedly connected to one side of the fixed shaft. Four positioning rods arranged in a square pattern are fixedly connected to the first circular plate near the fixed shaft. A rotor is mounted on the fixed shaft. The rotor has four first positioning holes that mate with the positioning rods. A second circular plate is mounted on the end of each of the four positioning rods away from the first circular plate. The second circular plate has four second positioning holes that mate with the positioning rods. Two mounting slots are formed on the second circular plate. Sliding plates are installed in the mounting slots. A triangular plate and two trapezoidal plates are fixedly connected to the two sliding plates on their adjacent sides. The trapezoidal plates are positioned on one side of the triangular plate. Two springs are provided on the two sliding plates on their distant sides. A slot and a square groove are formed on the end of the limiting plate near the second circular plate. The trapezoidal plates and triangular plates are positioned in the slots. The mechanism utilizes a fixed shaft, limiting plates, a first circular plate, positioning rods, and a second circular plate. The technology employs a combination of trapezoidal plates, triangular plates, and slots to restrict the position of the second circular plate. Therefore, the fixed shaft, limiting plate, and positioning rod position the rotor. When the triangular and trapezoidal plates are within the slots, they restrict the position of the second circular plate, ensuring stability between the first and second circular plates. This allows the rotor to remain stably positioned between the first and second circular plates. As the rotor rotates, the fixed shaft also rotates, ensuring the rotor's position remains stable. This effectively solves the problem mentioned in the background technology that most micro-motors on the market have rotors directly mounted on the surface of the micro-motor shaft, often using adhesive or welding methods. This method is difficult to operate, inconvenient for installation and disassembly, and complicated if the rotor is damaged or needs replacement, potentially damaging the shaft. This technology effectively simplifies the rotor installation and disassembly process, making subsequent rotor maintenance more convenient and improving work efficiency.

[0006] Preferably, the first circular plate is fixedly connected to a fixing cylinder on the side away from the second circular plate.

[0007] Preferably, the fixed cylinder has a rotating shaft inside, and both the fixed cylinder and the rotating shaft have two screw holes, in which fastening screws are installed.

[0008] Preferably, the rotor has a insertion slot, which is adapted to the limiting plate and the fixed shaft.

[0009] Preferably, two guide rods are provided in the mounting groove, the guide rods are fixedly connected to the second circular plate, the sliding plate is sleeved on the guide rods, and the sliding plate is slidably connected to the guide rods.

[0010] Preferably, the guide rod passes through the spring.

[0011] The beneficial effects of this utility model are as follows: By setting a fixed shaft, a limiting plate, a first circular plate, a positioning rod, and a second circular plate, and using the cooperation between a trapezoidal plate, a triangular plate, and a slot to restrict the position of the second circular plate, the fixed shaft, the limiting plate, and the positioning rod position the rotor. When the triangular plate and the trapezoidal plate are in the slot, they can restrict the position of the second circular plate, ensuring the stability of the position between the first and second circular plates. This allows the rotor to be stably positioned between the first and second circular plates. When the rotor rotates, the fixed shaft also rotates, ensuring the stability of the rotor's position. This effectively solves the problem mentioned in the background technology that most micro-motors on the market currently have rotors directly mounted on the surface of the micro-motor shaft, mostly fixed to the micro-motor shaft by bonding or welding. This method is very difficult to operate, inconvenient for installing and disassembling the rotor, and if the rotor is damaged or needs to be replaced later, the disassembly work becomes complicated and may damage the shaft. This effectively simplifies the rotor installation and disassembly process, making subsequent rotor maintenance more convenient and improving work efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a rotor mounting mechanism for a micro motor proposed in this utility model; Figure 2 This is a partial structural schematic diagram of a rotor mounting mechanism for a micro motor proposed in this utility model; Figure 3 This is a schematic diagram of the structure of the first circular plate of a rotor mounting mechanism for a micro motor proposed in this utility model. Figure 4 This is a schematic diagram showing the unfolded structure of the fixed shaft of a rotor mounting mechanism for a micro motor according to the present invention. Figure 5 This is a schematic diagram of the unfolded structure of the second circular plate of a rotor mounting mechanism for a micro motor proposed in this utility model. Figure 6 This is a schematic cross-sectional view of the second circular plate of a rotor mounting mechanism for a micro motor according to the present invention. Figure 7 This is a schematic diagram of the unfolded cross-sectional structure of the second circular plate of a rotor mounting mechanism for a micro motor proposed in this utility model. Figure 8 This is a schematic diagram of the trapezoidal plate structure of a rotor mounting mechanism for a micro motor proposed in this utility model.

[0013] In the diagram: 1. Fixed shaft; 101. Limiting plate; 102. Slot; 103. Square slot; 2. First circular plate; 3. Positioning rod; 4. Rotor; 401. Insertion slot; 5. First positioning hole; 6. Second circular plate; 601. Second positioning hole; 7. Mounting slot; 8. Guide rod; 9. Sliding plate; 10. Trapezoidal plate; 11. Triangular plate; 12. Spring; 13. Fixed cylinder; 14. Rotating shaft; 15. Screw hole; 16. Fastening screw. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-8 A rotor mounting mechanism for a micro motor includes a fixed shaft 1. Two limiting plates 101 are fixedly connected to the outer wall of the fixed shaft 1. A first circular plate 2 is fixedly connected to one side of the fixed shaft 1. Four positioning rods 3 in a square arrangement are fixedly connected to the first circular plate 2 on the side near the fixed shaft 1. A rotor 4 is sleeved on the fixed shaft 1. The rotor 4 has four first positioning holes 5 that are adapted to the positioning rods 3. The four positioning rods 3 have the same second circular plate 6 sleeved at the end away from the first circular plate 2. The second circular plate 6 has four positioning holes 5 that are adapted to the positioning rods 3. The second positioning hole 601 is adapted to the second circular plate 6. Two mounting grooves 7 are opened on the second circular plate 6. Sliding plates 9 are installed in the mounting grooves 7. Triangular plates 11 and two trapezoidal plates 10 are fixedly connected to the two sliding plates 9 on the side that is close to each other. The trapezoidal plates 10 are located on one side of the triangular plates 11. Two springs 12 are installed on the side that is far from each other. The limiting plate 101 has a slot 102 and a square groove 103 at the end close to the second circular plate 6. The trapezoidal plates 10 and the triangular plates 11 are both located in the slot 102.

[0016] The working principle of this utility model is as follows: When installing the rotor 4, the rotor 4 is fitted onto the fixed shaft 1 and the limiting plate 101. The rotor 4 is positioned through the first positioning hole 5 and the positioning rod 3. Then, the second circular plate 6 is fitted onto the fixed shaft 1, the limiting plate 101, and the positioning rod 3, with the positioning rod 3 positioned inside the second positioning hole 601. After positioning the second circular plate 6, press the second circular plate 6 to move it towards the first circular plate 2. When the trapezoidal plate 10 and the triangular plate 11 come into contact with the limiting plate 101, if the trapezoidal plate 10 and the triangular plate 11 continue to move, they can move into the mounting groove 7. During this process, the trapezoidal plate 10 and the triangular plate 11... The sliding plate 9 will move, and the sliding plate 9 will compress the spring 12, causing the spring 12 to contract. When the trapezoidal plate 10 and the triangular plate 11 move to the position of the slot 102, the contracted spring 12 will extend, allowing the trapezoidal plate 10 and the triangular plate 11 to enter the slot 102. This restricts the position between the second circular plate 6 and the limiting plate 101, ensuring the stability of the position between the second circular plate 6 and the fixed shaft 1 and the limiting plate 101, thus installing the rotor 4. When disassembly is required, a hard object is inserted into the square groove 103 and pressed against the inclined surface of the triangular plate 11, allowing the triangular plate 11 to re-enter the mounting groove 7, and the second circular plate 6 can be removed, thus removing the rotor 4.

[0017] In this utility model, a fixing cylinder 13 is fixedly connected to the first circular plate 2 on the side away from the second circular plate 6. A rotating shaft 14 is provided inside the fixing cylinder 13. Two screw holes 15 are provided on both the fixing cylinder 13 and the rotating shaft 14. Fastening screws 16 are provided in the screw holes 15.

[0018] With the above structure, the rotating shaft 14 is the rotating shaft of the micro motor. By screwing the fastening screw 16 into the screw hole 15 on the fixed cylinder 13 and the rotating shaft 14, the position between the rotating shaft 14 and the fixed cylinder 13 can be restricted, and the fixed cylinder 13 can be installed on the rotating shaft 14.

[0019] In this utility model, the rotor 4 is provided with a plug groove 401, which is adapted to the limiting plate 101 and the fixed shaft 1.

[0020] With the above structure, when installing the rotor 4, the rotor 4 is fitted onto the fixed shaft 1 and the limiting plate 101, so that the fixed shaft 1 and the limiting plate 101 are in the insertion groove 401. When the fixed shaft 1 rotates, the rotor 4 will rotate accordingly.

[0021] In this utility model, two guide rods 8 are provided in the mounting groove 7. The guide rods 8 are fixedly connected to the second circular plate 6. The sliding plate 9 is sleeved on the guide rods 8 and slidably connected to the guide rods 8. The guide rods 8 pass through the spring 12.

[0022] With the above structure, the sliding plate 9 will move along the guide rod 8 when it moves, ensuring the stability of the sliding plate 9 when it moves.

[0023] Working principle: The fixing screw 16 is screwed into the screw holes 15 on the fixing cylinder 13 and the rotating shaft 14, thus installing the fixing cylinder 13 onto the rotating shaft 14. This ensures the stability of the fixed shaft 1. When the rotating shaft 14 rotates, the fixed shaft 1 also rotates. When installing the rotor 4, the rotor 4 is placed on the fixed shaft 1 and the limiting plate 101. The rotor 4 is positioned using the first positioning hole 5 and the positioning rod 3. Then, the second circular plate 6 is placed on the fixing shaft 1, the limiting plate 101, and the positioning rod 3, with the positioning rod 3 positioned in the second positioning hole 601. After positioning the second circular plate 6, it is pressed down to move towards the first circular plate 2. When the trapezoidal plate 10 and the triangular plate 11 contact the limiting plate 101, continuing to move the trapezoidal plate 10 and the triangular plate 11 allows them to move into the mounting groove 7. During this process, the trapezoidal plate 10 and the triangular plate 11... Plate 11 drives the sliding plate 9 to move, and the sliding plate 9 compresses the spring 12, causing the spring 12 to contract. When the trapezoidal plate 10 and the triangular plate 11 move to the position of the slot 102, the contracted spring 12 will extend, allowing the trapezoidal plate 10 and the triangular plate 11 to enter the slot 102. The straight surface of the trapezoidal plate 10 contacts the limiting plate 101, and the second circular plate 6 is in close contact with the rotor 4. The second circular plate 6 cannot move towards the first circular plate 2 again, nor can it move away from the first circular plate 2. This restricts the position between the second circular plate 6 and the limiting plate 101, ensuring that the position between the second circular plate 6 and the fixed shaft 1 and the limiting plate 101 is stable, and the rotor 4 can be installed. When disassembly is required, a hard object is inserted into the square groove 103 and the inclined surface of the triangular plate 11 is pressed, which allows the triangular plate 11 to re-enter the mounting groove 7, and the second circular plate 6 can be removed, thus allowing the rotor 4 to be removed.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rotor mounting mechanism for use in a micro motor, comprising a fixed shaft (1), characterized in that, Two limiting plates (101) are fixedly connected to the outer wall of the fixed shaft (1). A first circular plate (2) is fixedly connected to one side of the fixed shaft (1). Four positioning rods (3) in a square arrangement are fixedly connected to the first circular plate (2) on the side near the fixed shaft (1). A rotor (4) is sleeved on the fixed shaft (1). Four first positioning holes (5) adapted to the positioning rods (3) are opened on the rotor (4). The same second circular plate (6) is sleeved on the end of the four positioning rods (3) away from the first circular plate (2). Four second positioning holes (601) adapted to the positioning rods (3) are opened on the second circular plate (6). The second circular plate (6) has two mounting slots (7), and a sliding plate (9) is provided in the mounting slot (7). The two sliding plates (9) are fixedly connected to a triangular plate (11) and two trapezoidal plates (10) on the side that is close to each other. The trapezoidal plate (10) is located on one side of the triangular plate (11). The two sliding plates (9) are provided with two springs (12) on the side that is far away from each other. The limiting plate (101) has a slot (102) and a square slot (103) at the end that is close to the second circular plate (6). The trapezoidal plate (10) and the triangular plate (11) are both located in the slot (102).

2. The rotor mounting mechanism for use in a micro electromechanical device as recited in claim 1, wherein The first circular plate (2) is fixedly connected to a fixing cylinder (13) on the side away from the second circular plate (6).

3. The rotor mounting mechanism for use in a micro electromechanical device as recited in claim 2, wherein The fixed cylinder (13) is provided with a rotating shaft (14) inside. Both the fixed cylinder (13) and the rotating shaft (14) have two screw holes (15) and fastening screws (16) are provided in the screw holes (15).

4. The rotor mounting mechanism for use in a micro electromechanical device as recited in claim 1, wherein The rotor (4) is provided with a plug groove (401), which is adapted to the limiting plate (101) and the fixed shaft (1).

5. The rotor mounting mechanism for use in a micro electromechanical device as recited in claim 1, wherein Two guide rods (8) are provided in the mounting groove (7). The guide rods (8) are fixedly connected to the second circular plate (6). The sliding plate (9) is sleeved on the guide rods (8) and is slidably connected to the guide rods (8).

6. The rotor mounting mechanism for use in a micro electromechanical device as recited in claim 5, wherein The guide rod (8) passes through the spring (12).

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