A small quick-release motor

Abstract

The utility model discloses a small -size quick detach motor, including circuit board, rotor and motor shaft, be provided with winding coil on the circuit board, the circuit board is PCB printed circuit board, the rotor and circuit board are opposite and set up, the rotor is fixedly connected with motor shaft, the motor shaft is hollow shaft, the quick detach assembly is movably nested in the motor shaft, the utility model discloses a small -size quick detach motor first through the circuit board as stator, has reduced the volume and weight of motor under the condition of guaranteeing power, rotational speed, sets up hollow motor shaft simultaneously, sets up quick detach assembly in the inside of motor shaft, so that this motor can realize quick dismounting load.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a small quick-release motor. Background Technology

[0002] In certain scenarios, it is necessary to frequently install and remove loads from the motor's output shaft. Therefore, it is necessary to design a quick-release motor that can quickly install and remove loads. At the same time, given the power and speed, the size and weight of the motor should be minimized to reduce the overall size and weight of the device. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a small quick-release motor. This small quick-release motor first uses a circuit board as the stator, reducing the size and weight of the motor while ensuring power and speed. At the same time, it is equipped with a hollow motor shaft, and quick-release components are installed inside the motor shaft, enabling the motor to quickly install and remove loads.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a small quick-release motor, including a circuit board, a rotor and a motor shaft. The circuit board is provided with a wound coil and is a PCB printed circuit board.

[0006] The rotor and the circuit board are arranged opposite to each other, and the rotor is fixedly connected to the motor shaft;

[0007] The motor shaft is a hollow shaft, and a quick-release assembly is movably nested inside the motor shaft.

[0008] This utility model discloses a small quick-release motor, which uses a circuit board with wound coils as the stator. Compared with the traditional wound stator, its weight and volume are significantly reduced. At the same time, the motor shaft is a hollow shaft, and a quick-release component is nested inside the hollow shaft. During use, the load can be disassembled and assembled by using the quick-release component.

[0009] The small quick-release motor of this utility model first uses a circuit board as the stator, which reduces the size and weight of the motor while ensuring power and speed. At the same time, it is equipped with a hollow motor shaft, and quick-release components are installed inside the motor shaft, which enables the motor to quickly install and remove loads.

[0010] In a further technical solution, the rotor includes a back iron and magnets, which are provided on both sides of the circuit board along the axial direction.

[0011] Rotors are installed on both sides of the circuit board, which allows the motor to output greater power and a single rotor to be made smaller.

[0012] In a further technical solution, the quick-release assembly includes an operating end and a locking end. The operating end is provided with an operating part, and the locking end is provided with a locking part for locking the load.

[0013] Inside the hollow shaft, by operating the operating part at the operating end, the locking part at the locking end can be disassembled and assembled with respect to the load, making separate operations more convenient.

[0014] In a further technical solution, the quick-release assembly includes a guide shaft coaxial with the motor shaft, the guide shaft is nested inside the motor shaft, the guide shaft is a hollow shaft, and a locking shaft is coaxially sleeved inside the guide shaft;

[0015] The operating part is located at one end of the locking shaft, and the locking part is located at the other end of the locking shaft.

[0016] By using the nested guide shaft and locking shaft, the locking part can be disassembled and assembled at the other end by operating the operating part at one end of the locking shaft.

[0017] In a further technical solution, a locking hole is provided on the side wall of the end of the guide shaft away from the operating part, and a locking steel ball is movably disposed in the locking hole, the diameter of the locking steel ball being larger than the wall thickness of the guide shaft.

[0018] The locking part includes a return groove at the end of the locking shaft. The size of the return groove is matched with the locking steel ball, and the matching is such that it can at least accommodate the volume of the locking steel ball protruding from the locking hole.

[0019] By adjusting the relative position of the locking shaft and the guide shaft, the locking steel ball can be made to protrude from the surface of the guide shaft or retract into the surface of the guide shaft, thereby realizing the assembly and disassembly of the load. This method is efficient and easy to operate.

[0020] In a further technical solution, a movable cavity is provided inside one end of the guide shaft corresponding to the operating part, at least a part of the operating part is placed in the movable cavity, and a locking spring is provided between the operating part and the cavity wall of the movable cavity.

[0021] The design of the movable cavity and locking spring provides the locking shaft with preload, thereby preventing relative movement between the locking shaft and the guide shaft due to gravity or vibration, which could affect the connection with the load and enhance safety.

[0022] In a further technical solution, the end of the guide shaft away from the locking hole extends out of the end of the motor shaft, and a guide spring is provided between the end of the guide shaft and the end of the motor shaft.

[0023] By setting a guide spring, the guide shaft has a preload, which makes the contact between the locking steel ball and the load tighter, making it easier for the motor shaft to transmit torque to the load.

[0024] In a further technical solution, a support member is fixedly connected to the outer side of the end of the motor shaft away from the operating part.

[0025] The support is designed so that the load is pressed against the support when under pressure, so as to receive the torque transmitted by the motor shaft.

[0026] In a further technical solution, an upper shell and a lower shell are respectively sleeved along the axial direction of the motor shaft. The upper shell and the lower shell are rotatably connected to the motor shaft through bearings. The rotor and the circuit board are both located in the cavity where the upper shell and the lower shell are closed. The circuit board is clamped and fixed by the upper shell and the lower shell.

[0027] The separate housing facilitates the positioning and fixing of the circuit board.

[0028] In a further technical solution, a limiting ring is provided between the two rotors. The limiting ring is sleeved on the outside of the motor shaft, and the two rotors abut against the axial ends of the limiting ring respectively. A through hole is provided in the middle of the circuit board, and the motor shaft and the limiting ring both pass through the through hole.

[0029] The setting of the limit ring can limit the axial movement of the two rotors, ensuring the stability of the axial distance between the rotor and the circuit board, and ensuring the motor output effect.

[0030] The beneficial effects are:

[0031] 1. The small quick-release motor of this utility model first uses a circuit board as the stator, which reduces the size and weight of the motor while ensuring power and speed. At the same time, it is equipped with a hollow motor shaft, and quick-release components are installed inside the motor shaft, which enables the motor to quickly install and remove loads.

[0032] 2. Rotors are set on both sides of the circuit board, which makes the motor output power greater and the individual rotor can be made smaller.

[0033] 3. Inside the hollow shaft, by operating the operating part of the operating end, the locking part of the locking end can be disassembled and assembled with respect to the load, making separate operation more convenient.

[0034] 4. By using the nested guide shaft and locking shaft, the locking part can be disassembled and assembled at the other end by operating the locking shaft at one end.

[0035] 5. By adjusting the relative position of the locking shaft and the guide shaft, the locking steel ball can be made to protrude from the surface of the guide shaft or retract into the surface of the guide shaft, thereby realizing the disassembly and assembly of the load. It is efficient and easy to operate.

[0036] 6. The design of the movable cavity and locking spring provides the locking shaft with preload, thereby preventing relative movement between the locking shaft and the guide shaft due to gravity or vibration, which could affect the connection with the load and enhance safety.

[0037] 7. By setting a guide spring, the guide shaft has a preload, which makes the contact between the locking steel ball and the load tighter, making it easier for the motor shaft to transmit torque to the load.

[0038] 8. The support components are designed so that the load is in close contact with the support components when it is under pressure, so as to receive the torque transmitted by the motor shaft.

[0039] 9. The separate casing facilitates the positioning and fixing of the circuit board.

[0040] 10. The setting of the limit ring can limit the axial movement of the two rotors, ensuring the stability of the axial distance between the rotor and the circuit board, and ensuring the motor output effect. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a small quick-release motor according to an embodiment of the present invention;

[0042] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0043] Figure 3 This is a schematic diagram of the quick-release assembly of the small quick-release motor according to an embodiment of the present invention;

[0044] Figure 4 yes Figure 3 Enlarged structural diagram at point B;

[0045] Figure 5 This is a structural schematic diagram of the assembly and load-bearing process of the small quick-release motor according to an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the assembly load of a small quick-release motor according to an embodiment of the present invention.

[0047] 10. Motor shaft; 11. Rotor; 12. Circuit board; 13. Support component; 14. Limit ring; 20. Housing; 21. Upper housing; 22. Lower housing; 30. Quick release assembly; 31. Guide shaft; 311. Movable cavity; 312. Locking hole; 313. Locking ball; 32. Locking shaft; 321. Operating part; 322. Return groove; 33. Guide spring; 34. Locking spring; 40. Load plate. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings:

[0049] Example:

[0050] A small, quick-release motor, such as Figure 1 and Figure 2 As shown, it includes a circuit board 12, a rotor 11 and a motor shaft 10. A wound coil is provided on the circuit board 12. The circuit board 12 is a PCB printed circuit board.

[0051] The rotor 11 and the circuit board 12 are arranged opposite to each other, and the rotor 11 is fixedly connected to the motor shaft 10;

[0052] The motor shaft 10 is a hollow shaft, and a quick-release assembly 30 is movably nested inside the motor shaft 10.

[0053] It should be noted that using a PCB printed circuit board as the stator, the winding coils on it generate current and produce a magnetic field, which plays the same role as a traditional wound stator. The magnetic field it generates can also drive the rotor 11 to rotate.

[0054] The small quick-release motor of this utility model uses a circuit board 12 with a wound coil as the stator. Compared with the traditional wound stator, its weight and volume are significantly reduced. At the same time, the motor shaft 10 is a hollow shaft, and a quick-release component 30 is nested inside the hollow shaft. During use, the load can be disassembled and assembled through the quick-release component 30.

[0055] The small quick-release motor of this utility model first uses the circuit board 12 as the stator, which reduces the size and weight of the motor while ensuring power and speed. At the same time, a hollow motor shaft 10 is set, and a quick-release component 30 is installed inside the motor shaft 10, so that the motor can quickly disassemble and assemble the load.

[0056] With convenient disassembly and assembly of loads, the motor in this embodiment also has the advantages of small size and weight. The hollow shaft combined with the quick-release design also has the advantage of compact structure, making the whole machine smaller.

[0057] In another embodiment, such as Figure 2 As shown, the rotor 11 includes a back iron and magnets, which are provided on both sides of the circuit board 12 along the axial direction.

[0058] Rotors 11 are set on both sides of the circuit board 12, which makes the motor output power greater and allows a single rotor 11 to be made smaller.

[0059] In another embodiment, such as Figure 3 As shown, the quick-release assembly 30 includes an operating end and a locking end. The operating end is provided with an operating part 321, and the locking end is provided with a locking part for locking the load.

[0060] Inside the hollow shaft, the locking part at the locking end can be disassembled and assembled with respect to the load by operating the operating part 321 at the operating end, making separate operation more convenient.

[0061] In another embodiment, such as Figure 3 and Figure 4 As shown, the quick-release assembly 30 includes a guide shaft 31 coaxial with the motor shaft 10. The guide shaft 31 is nested inside the motor shaft 10. The guide shaft 31 is a hollow shaft, and a locking shaft 32 is coaxially sleeved inside the guide shaft 31.

[0062] The operating part 321 is located at one end of the locking shaft 32, and the locking part is located at the other end of the locking shaft 32.

[0063] By using the nested guide shaft 31 and locking shaft 32, the locking part can be disassembled and assembled at the other end by operating the operating part 321 at one end of the locking shaft 32.

[0064] In another embodiment, such as Figure 3 and Figure 4 As shown, a locking hole 312 is provided on the side wall of the end of the guide shaft 31 away from the operating part 321. A locking steel ball 313 is movably disposed in the locking hole 312. The diameter of the locking steel ball 313 is greater than the wall thickness of the guide shaft 31.

[0065] The locking part includes a return groove 322 provided at the end of the locking shaft 32. The size of the return groove 322 matches the locking ball 313, and the matching is such that it can at least accommodate the volume of the locking ball 313 protruding from the locking hole 312.

[0066] By adjusting the relative position of the locking shaft 32 and the guide shaft 31, the locking steel ball 313 can protrude from the surface of the guide shaft 31 or retract into the surface of the guide shaft 31, thereby realizing the assembly and disassembly of the load. This method is efficient and easy to operate.

[0067] This embodiment describes the complete load disassembly and assembly process:

[0068] First, such as Figure 5 and Figure 6 As shown, the motor in this embodiment is a medical centrifuge motor, and its load is a load disk 40. One side of the load disk 40 has a hole for the guide shaft 31 to pass through, and the inner wall of the hole has a corresponding recess for the locking steel ball 313.

[0069] Place the load disk 40 at one end of the guide shaft 31, such as Figure 5As shown, by pressing down the operating part 321, the guide shaft 31 and the locking shaft 32 move within the motor shaft 10. At the same time, by adjusting the position of the locking shaft 32, the return groove 322 on the locking shaft 32 is made flush with the locking steel ball 313 on the guide shaft 31. Therefore, as the guide shaft 31 enters the hole on the load disk 40, the edge of the hole on the load disk 40 applies inward pressure to the locking steel ball 313, causing the locking steel ball 313 to move toward the return groove 322. After the locking steel ball 313 retracts into the locking hole 312, the guide shaft 31 can then enter the hole on the load disk 40.

[0070] Subsequently, when the guide shaft 31 enters the deepest part of the hole on the load disk 40, the recessed position of the hole on the load disk 40 is aligned with the locking ball 313. At this time, the operating part 321 retracts, and the locking shaft 32 retracts, as... Figure 6 As shown, due to the retraction of the locking shaft 32, the edge of the retraction groove 322 drives the locking ball 313 to extend out of the locking hole 312. At this time, the locking ball 313 extends out of the locking hole 312 and enters the recess on the load plate 40 and gets stuck. Since there is not enough clearance between the surface of the locking shaft 32 and the inner wall of the guide shaft 31, the locking ball 313 can no longer move, and the load plate 40 is also stuck on the guide shaft 31 because of the presence of the locking ball 313. This is the assembly process.

[0071] During disassembly, press the operating part 321 to move the locking shaft 32. When the return groove 322 on the locking shaft 32 is aligned with the retracting steel ball, the load plate 40 can be disassembled. The pressure during disassembly of the load plate 40 forces the locking steel ball 313 back into the return groove 322. Subsequently, there is no more resistance to disassembling the load plate 40. At the same time, the locking shaft 32 and the guide shaft 31 can also be withdrawn from the upper hole of the load plate 40 and reset.

[0072] exist Figure 3 and Figure 4 To demonstrate the structure, only one locking ball 313 is shown. It is understandable that there could be more locking balls 313, return grooves 322, and locking holes 312 to enhance the connection strength.

[0073] In another embodiment, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a movable cavity 311 is provided inside one end of the guide shaft 31 corresponding to the operating part 321. At least a part of the operating part 321 is placed inside the movable cavity 311, and a locking spring 34 is provided between the operating part 321 and the cavity wall of the movable cavity 311.

[0074] The arrangement of the movable cavity 311 and the locking spring 34 gives the locking shaft 32 a preload, thereby preventing relative movement between the locking shaft 32 and the guide shaft 31 due to gravity or vibration, which would cause the return groove 322 to be flush with the locking ball 313, causing the locking ball 313 to fall off and affect the connection with the load, thus improving safety.

[0075] Meanwhile, the operating part 321 is partially placed inside the movable cavity 311, and the part protruding from the movable cavity 311 facilitates the user's operation. In addition, the front and rear walls of the movable cavity 311 itself can also limit the operation of the operating part 321. In the clamped state, the return groove 322 is flush with the locking steel ball 313.

[0076] In another embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the end of the guide shaft 31 away from the locking hole 312 extends out of the end of the motor shaft 10, and a guide spring 33 is provided between the guide shaft 31 and the end of the motor shaft 10.

[0077] By setting the guide spring 33, the guide shaft 31 is given a preload, which makes the contact between the locking steel ball 313 and the load tighter, so that the motor shaft 10 can transmit torque to the load.

[0078] In another embodiment, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a support member 13 is fixedly connected to the outer side of the end of the motor shaft 10 away from the operating part 321.

[0079] The support member 13 is configured such that the load is in close contact with the support member 13 when under pressure, so as to receive the torque transmitted by the motor shaft 10.

[0080] It is understandable that when the locking steel ball 313 locks the load disk 40, the preload force of the guide shaft 31 will drive the load disk 40 to move toward the motor shaft 10. Therefore, the support member 13 is specially provided. The preload force makes the load disk 40 contact the support member 13, and the support member 13 will rotate with the rotation of the motor shaft 10, thus driving the load disk 40 to rotate.

[0081] In another embodiment, such as Figure 1 and Figure 2As shown, an upper shell 21 and a lower shell 22 are respectively sleeved along the axial direction of the motor shaft 10. The upper shell 21 and the lower shell 22 are rotatably connected to the motor shaft 10 through bearings. The rotor 11 and the circuit board 12 are both located in the cavity where the upper shell 21 and the lower shell 22 are closed. The circuit board 12 is clamped and fixed by the upper shell 21 and the lower shell 22.

[0082] The separate housing facilitates the positioning and fixing of the circuit board 12.

[0083] In another embodiment, such as Figure 2 As shown, a limiting ring 14 is provided between the two rotors 11. The limiting ring 14 is sleeved on the outside of the motor shaft 10. The two rotors 11 abut against the two axial ends of the limiting ring 14 respectively. A through hole is provided in the middle of the circuit board 12, through which the motor shaft 10 and the limiting ring 14 pass.

[0084] The setting of the limiting ring 14 can limit the axial movement of the two rotors 11, ensuring the stability of the axial distance between the rotors 11 and the circuit board 12, and ensuring the motor output effect.

[0085] In another embodiment, the circuit board 12 is a multilayer circuit board 12, which is formed by laminating multiple single-layer circuit boards 12. Compared with the single-layer circuit board 12, the multilayer circuit board 12 has a larger coil conductor area, which allows a larger current to pass through, generates a stronger magnetic field, and thus obtains greater power.

[0086] In another embodiment, such as Figure 2 As shown, a wave-shaped washer is also fitted outside the bearing that connects the upper cover 21 to the motor shaft 10. The wave-shaped washer is set between the end face of the bearing and the upper cover 21. The wave-shaped washer can reduce the axial movement of the motor shaft during rotor operation and reduce noise.

[0087] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A small quick-release motor, characterized by, It includes a circuit board, a rotor and a motor shaft, wherein a wound coil is provided on the circuit board, and the circuit board is a PCB printed circuit board; The rotor and the circuit board are arranged opposite to each other, and the rotor is fixedly connected to the motor shaft; The motor shaft is a hollow shaft, and a quick-release assembly is movably nested inside the motor shaft.

2. The small quick-release motor of claim 1, wherein, The rotor includes a back iron and magnets, which are provided on both sides of the circuit board along the axial direction.

3. The small quick-release motor of claim 1, wherein, The quick-release assembly includes an operating end and a locking end. The operating end is provided with an operating part, and the locking end is provided with a locking part for locking the load.

4. The small quick-release motor of claim 3, wherein, The quick-release assembly includes a guide shaft coaxial with the motor shaft, the guide shaft being nested inside the motor shaft, the guide shaft being a hollow shaft, and a locking shaft being coaxially sleeved inside the guide shaft; The operating part is located at one end of the locking shaft, and the locking part is located at the other end of the locking shaft.

5. The small quick-release motor of claim 4, wherein, The guide shaft has a locking hole on the side wall of the end furthest from the operating part. A locking steel ball is movably disposed in the locking hole, and the diameter of the locking steel ball is greater than the wall thickness of the guide shaft. The locking part includes a return groove at the end of the locking shaft. The size of the return groove is matched with the locking steel ball, and the matching is such that it can at least accommodate the volume of the locking steel ball protruding from the locking hole.

6. The small quick-release motor of claim 5, wherein, The guide shaft has a movable cavity inside one end corresponding to the operating part, at least a part of the operating part is placed in the movable cavity, and a locking spring is provided between the operating part and the cavity wall of the movable cavity.

7. The small quick-release motor of claim 6, wherein, The guide shaft extends from the end away from the locking hole to the end of the motor shaft, and a guide spring is provided between the end of the guide shaft and the end of the motor shaft.

8. The small quick-release motor of claim 7, wherein, A support member is fixedly connected to the outer side of the end of the motor shaft away from the operating part.

9. The small quick-release motor of claim 1, wherein, An upper shell and a lower shell are respectively fitted along the axial direction of the motor shaft. The upper shell and the lower shell are rotatably connected to the motor shaft through bearings. The rotor and the circuit board are both located in the cavity where the upper shell and the lower shell are closed. The circuit board is clamped and fixed by the upper shell and the lower shell.

10. The small quick-release motor of claim 2, wherein, A limiting ring is provided between the two rotors. The limiting ring is sleeved on the outside of the motor shaft. The two rotors abut against the two axial ends of the limiting ring respectively. A through hole is provided in the middle of the circuit board. The motor shaft and the limiting ring both pass through the through hole.

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