Novel stepping motor

Abstract

The utility model provides a novel stepping motor. The novel stepping motor comprises a casing, a stator assembly, a rotor assembly, a wiring assembly, a coupler, a cover plate covering the casing, and a speed regulation accessory used for being connected with an external transmission part. The stator assembly is arranged in the casing and is electrically connected with the outside through the wiring assembly; the rotor assembly is arranged in the stator assembly; one end of the coupler is connected with the rotor assembly, and the other end of the coupler is detachably connected with the speed regulation accessory which is located outside the machine shell. According to the stepping motor, the rotating speed and the output torque can be conveniently adjusted according to different application occasions, so that the universality and the practicability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and more specifically to a novel stepping motor. Background Art

[0002] Stepper motors are open-loop control elements that convert electrical pulse signals into angular or linear displacements. Stepper motors are the third most widely used type of motors besides DC motors and AC motors, and are irreplaceable products in open-loop high-resolution positioning systems.

[0003] A stepper motor generally includes a housing assembly, a stator assembly, a rotor assembly, and a gear transmission assembly. The gear transmission assembly is an important component of the stepper motor, and can play a role in precise control, precise speed, and torque control. The speed ratio and output torque of the stepper motor are determined by the gear transmission assembly. However, since the gear transmission assembly has been configured and set according to the working performance and working parameters during the assembly process of the stepper motor, the speed and output torque of the existing stepper motor cannot be freely adjusted, which makes the stepper motor with a set speed ratio inflexible and inconvenient during use, and also limits certain use occasions and scopes, resulting in poor versatility and practicality. Utility Model Content

[0004] The utility model aims to overcome the shortcomings and deficiencies in the prior art and to provide a novel stepping motor, which can conveniently adjust the rotation speed and output torque according to different application occasions, thereby improving versatility and practicality.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a new type of stepping motor, characterized in that it includes a casing, a stator assembly, a rotor assembly, a wiring assembly, a coupling, a cover plate covering the casing and a speed regulating accessory for connecting to an external transmission component; the stator assembly is arranged in the casing and electrically connected to the outside through the wiring assembly; the rotor assembly is arranged in the stator assembly; one end of the coupling is connected to the rotor assembly, and the other end is detachably connected to the speed regulating accessory, and the speed regulating accessory is located outside the casing.

[0006] In the above scheme, when the rotor assembly of the utility model rotates, it can drive the speed regulating accessory connected to the coupling to rotate, and the speed and torque are output through the speed regulating accessory, so as to realize the movement of the device (for example: cat walker rotation control platform, small humidifier water surface control platform and wine cabinet air conditioning switch conversion structure, etc.) in the external application occasions through the speed regulating accessory. During use, since the speed regulating accessory is located outside the casing and is detachably connected to the coupling, it is convenient to deploy and replace the speed regulating accessory according to the application occasion, so that the speed and output torque of the new stepping motor can adapt to the application occasion requirements, thereby improving the versatility and practicality of the new stepping motor.

[0007] The speed regulating accessory is a speed regulating gear.

[0008] The coupling passes through the cover plate and is connected to the rotor assembly; a shaft sleeve is provided at the connection between the cover plate and the coupling.

[0009] The stator assembly has a hollow structure arranged along its axial direction, and the rotor assembly is arranged in the hollow structure.

[0010] When the rotor assembly is installed on the stator assembly, the rotor assembly protrudes from the cover plate.

[0011] The novel stepping motor also includes a center needle; the center needle is arranged on the inner bottom surface of the housing, and the rotor assembly is sleeved with the center needle.

[0012] The inner bottom surface of the casing is provided with an elastic sheet; the rotor assembly on which the center needle is sleeved abuts against the elastic sheet.

[0013] The stator assembly includes a lower frame, an upper frame, a middle magnetic plate and an end plate; the lower frame is arranged at the bottom of the casing, and the end plate, the upper frame and the lower frame are connected in sequence; the middle magnetic plate is arranged between the upper frame and the lower frame.

[0014] The upper frame and the lower frame are wound with coils.

[0015] The wiring assembly includes a connector electrically connected to the outside, a circuit board and welding pins; the welding pins are respectively connected to the coil and the circuit board, and the connector is connected to the circuit board, so that the external power supply current is input to the circuit board and conducted to the coil.

[0016] The utility model stepper motor works like this:

[0017] The stepper motor of the utility model is connected to the outside through a connector, and the time-sharing power supply (1-2 phase / 2-2 phase) current is input to the circuit board, and then transmitted to the welding pin and the winding coil, so that the central magnetic plate of the stator assembly generates a variable magnetic field, so that the rotor assembly is uniformly magnetized, and the claw poles of the rotor assembly correspond to the poles of the stator assembly, and are staggered by 1 / 2 step angle. When the rotor assembly rotates, it can drive the speed regulating gear connected to the coupling to rotate, and the speed and torque are output through the speed regulating gear, so that the speed regulating gear can be used to drive the device of the external application occasion (for example: cat walker rotation control platform, small humidifier water surface control platform and wine cabinet air conditioning switch conversion structure, etc.) to move. During use, since the speed regulating gear is located outside the casing and is detachably connected to the coupling, it is convenient to allocate and replace the speed regulating gear according to the application occasion, so that the speed and output torque of the new stepper motor can adapt to the application occasion requirements, thereby improving the versatility and practicality of the new stepper motor.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects: the stepping motor of the utility model can conveniently adjust the rotation speed and output torque according to different application occasions, thereby improving the versatility and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the stepping motor of the utility model (the connector is not shown);

[0020] Figure 2 It is an exploded view of the stepping motor of the utility model (the coil is not shown);

[0021] Figure 3 It is the internal schematic diagram of the stepping motor of the utility model (the connector is not shown);

[0022] Among them, 1 is the casing, 2 is the rotor assembly, 3 is the coupling, 4 is the cover plate, 5 is the speed regulating gear, 6 is the shaft sleeve, 7 is the center pin, 8 is the spring piece, 9 is the lower frame, 10 is the upper frame, 11 is the middle magnetic plate, 12 is the end plate, 13 is the coil, 14 is the connector, 15 is the circuit board, 16 is the welding pin, and 17 is the outlet box. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementations.

[0024] Example

[0025] like Figures 1 to 3As shown, the stepper motor of the utility model includes a housing 1, a stator assembly, a rotor assembly 2, a wiring assembly, a coupling 3, a cover plate 4 covering the housing 1 and a speed regulating gear 5 for connecting to an external transmission component, wherein the stator assembly is arranged in the housing 1 and is electrically connected to the outside through the wiring assembly, and the rotor assembly 2 is arranged in the stator assembly, one end of the coupling 3 is connected to the rotor assembly, and the other end is detachably connected to the speed regulating gear 5, and the speed regulating gear 5 is located outside the housing 1.

[0026] Specifically, the coupling 3 passes through the cover plate 4 and is connected to the rotor assembly 2. A sleeve 6 is provided at the connection between the cover plate 4 and the coupling 3. The stator assembly has a hollow structure arranged along its axial direction. The rotor assembly 2 is arranged in the hollow structure. When the rotor assembly 2 is installed in the stator assembly, the rotor assembly 2 protrudes from the cover plate 4.

[0027] The stepper motor of the utility model further comprises a center pin 7, which is arranged on the inner bottom surface of the housing 1, and the rotor assembly 2 is sleeved with the center pin 7. The inner bottom surface of the housing 1 is provided with a spring sheet 8, and the rotor assembly 2 sleeved with the center pin 7 abuts against the spring sheet 8.

[0028] The stator assembly of the utility model includes a lower frame 9, an upper frame 10, a middle magnetic plate 11 and an end plate 12, wherein the lower frame 9 is arranged at the bottom of the housing 1, the end plate 12, the upper frame 10 and the lower frame 9 are connected in sequence, the middle magnetic plate 11 is arranged between the upper frame 10 and the lower frame 9, and the upper frame 10 and the lower frame 9 are wound with a coil 13. The wiring assembly includes a connector 14 electrically connected to the outside, a circuit board 15, a welding pin 16 and an outlet box 17, the welding pin 16 is respectively connected to the coil 13 and the circuit board 15, the connector 14 is connected to the circuit board 15, so as to input the external power supply current into the circuit board 15 and conduct it to the coil 13, and the outlet box 17 is connected to the housing 1 to cover the circuit board 15.

[0029] The utility model stepper motor works like this:

[0030] The stepper motor of the utility model is connected to the outside through the connector 14, and the time-sharing power supply (1-2 phase / 2-2 phase) current is input to the circuit board 15, and then transmitted to the welding pin 16 and the winding coil 13, so that the central magnetic plate 11 of the stator assembly generates a variable magnetic field, so that the rotor assembly 2 is uniformly magnetized, and the pole number of the rotor assembly 2 corresponds to the claw pole of the stator assembly, and the step angle is staggered by 1 / 2. When the rotor assembly 2 rotates, it can drive the speed regulating gear 5 connected to the coupling 3 to rotate, and the speed and torque are output through the speed regulating gear 5, so that the speed regulating gear 5 can drive the device of the external application occasion (for example: cat walker rotation control platform, small humidifier water surface control platform and wine cabinet air conditioning switch conversion structure, etc.) to move. During use, since the speed regulating gear 5 is located outside the housing 1 and is detachably connected to the coupling 3, it is convenient to allocate and replace the speed regulating gear 5 according to the application occasion, so that the speed and output torque of the new stepper motor can adapt to the application occasion requirements, thereby improving the versatility and practicality of the new stepper motor.

[0031] In the present invention, the solution of energizing the stator assembly to generate a magnetic field to magnetize the rotor assembly 2 is a prior art, and the existing stepper motors all use this method to rotate the rotor assembly 2.

[0032] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A new stepping motor, characterized by: It includes a casing, a stator assembly, a rotor assembly, a wiring assembly, a coupling, a cover plate covering the casing and a speed regulating accessory for connecting with an external transmission component; the stator assembly is arranged in the casing and electrically connected to the outside through the wiring assembly; the rotor assembly is arranged in the stator assembly; one end of the coupling is connected to the rotor assembly, and the other end is detachably connected to the speed regulating accessory, and the speed regulating accessory is located outside the casing.

2. The novel stepping motor according to claim 1 is characterized in that: The speed regulating accessory is a speed regulating gear.

3. The novel stepping motor according to claim 1 is characterized in that: The coupling passes through the cover plate and is connected to the rotor assembly; a shaft sleeve is provided at the connection between the cover plate and the coupling.

4. The novel stepping motor according to claim 1 is characterized in that: The stator assembly has a hollow structure arranged along its axial direction, and the rotor assembly is arranged in the hollow structure.

5. The novel stepping motor according to claim 1 is characterized in that: When the rotor assembly is installed on the stator assembly, the rotor assembly protrudes from the cover plate.

6. The novel stepping motor according to claim 1 is characterized in that: The novel stepping motor also includes a center needle; the center needle is arranged on the inner bottom surface of the housing, and the rotor assembly is sleeved with the center needle.

7. The novel stepping motor according to claim 6 is characterized in that: The inner bottom surface of the casing is provided with an elastic sheet; the rotor assembly on which the center needle is sleeved abuts against the elastic sheet.

8. The novel stepping motor according to claim 1 is characterized in that: The stator assembly includes a lower frame, an upper frame, a middle magnetic plate and an end plate; the lower frame is arranged at the bottom of the casing, and the end plate, the upper frame and the lower frame are connected in sequence; the middle magnetic plate is arranged between the upper frame and the lower frame.

9. The novel stepping motor according to claim 8 is characterized in that: The upper frame and the lower frame are wound with coils.

10. The novel stepping motor according to claim 9 is characterized in that: The wiring assembly includes a connector electrically connected to the outside, a circuit board and welding pins; the welding pins are respectively connected to the coil and the circuit board, and the connector is connected to the circuit board, so that the external power supply current is input to the circuit board and conducted to the coil.

Images