Stepping motor rotor and stepping motor

Abstract

The utility model relates to the technical field of stepping motors, and discloses a stepping motor rotor, which comprises a rotating shaft, a bearing is arranged at the front end of a rod of the rotating shaft, a plurality of groups of overlapped rotors are sleeved on the rod of the rotating shaft, an annular phase-change radiating fin is arranged between each group of rotors, a circle of clamping groove strip is arranged at the edge of each phase-change radiating fin, and the clamping groove strip is connected with the bearing. Positioning long strips clamped and butted with the clamping groove strips are mounted at the edges of one sides of the rotors, butting grooves clamped with the positioning long strips on the end faces of the adjacent rotors are formed in the other sides of the rotors, the phase change cooling fins are connected to the rotating shaft in a sleeving manner, and reinforcing assemblies located among the multiple groups of rotors and used for limiting are arranged on the rotating shaft; according to the utility model, the stepping motor rotor adopts the annular phase change radiating fins arranged among the plurality of groups of superposed rotors. The phase-change cooling fins are made of phase-change materials and can absorb and dissipate a large amount of heat in the working process of the rotor. And the overheating phenomenon is effectively prevented. The efficient heat dissipation design can significantly improve the performance stability of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motors, in particular to a stepping motor rotor and a stepping motor. Background Art

[0002] As a key component for precise motion control, stepper motors are widely used in automation equipment, robotics, and precision instruments. They achieve precise angular resolution through electromagnetic control, making them particularly important in a variety of demanding applications. However, stepper motors often generate significant heat during extended operation, impacting their performance and lifespan. While cooling measures such as heat sinks are commonly used in existing technologies, these methods often struggle to effectively dissipate heat under high loads, resulting in the continued problem of motor overheating.

[0003] A major issue currently is the limited effectiveness of conventional heat sinks in high-temperature environments. Because these heat sinks cannot quickly absorb and dissipate heat during rotor operation, they result in inefficient heat dissipation and an inability to effectively control rotor temperature. This not only impacts the performance and stability of the stepper motor but can also lead to premature failure, shortening its service life.

[0004] To this end, we propose a stepper motor rotor and a stepper motor. Utility Model Content

[0005] The utility model mainly solves the above-mentioned existing technical problems and provides a stepping motor rotor and a stepping motor.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a stepper motor rotor, including a rotating shaft, a bearing is installed on the front end of the shaft rod, multiple groups of superimposed rotors are sleeved on the shaft rod, an annular phase change heat sink is arranged between each group of rotors, a circle of card slots is provided at the edge of the phase change heat sink, a positioning strip that is engaged with the card slot is installed at the edge of one side of the rotor, and a docking groove is provided on the other side of the rotor that is engaged with the positioning strip on the adjacent rotor end face. The phase change heat sink is sleeved on the rotating shaft, and a reinforcement component for limiting between the multiple groups of rotors is provided on the rotating shaft.

[0007] As a preferred embodiment of the present invention, the reinforcement assembly includes a positioning ring fixed on the rotating shaft rod and a nut member threadedly sleeved on the rotating shaft rod, the positioning ring is located near one end of the bearing, and the nut member is located on the other end of the rotating shaft rod.

[0008] As a preferred embodiment of the present invention, at least two groups of nut members are provided on the rod of the rotating shaft, and elastic gaskets are provided between adjacent nut members.

[0009] As a preferred embodiment of the present invention, the thickness of the phase change heat sink is half the width of the positioning strip.

[0010] The present application also provides a stepper motor, which includes the stepper motor rotor described above.

[0011] The utility model provides a stepper motor rotor and a stepper motor, which have the following beneficial effects:

[0012] 1. This stepper motor rotor and stepper motor feature efficient heat dissipation: The stepper motor rotor utilizes multiple stacked sets of annular phase-change heat sinks positioned between the rotors. These heat sinks utilize phase-change material, which absorbs and dissipates significant amounts of heat during rotor operation. The phase-change material undergoes a phase change upon reaching a specific temperature, rapidly reducing the rotor's temperature and effectively preventing overheating. This efficient heat dissipation design significantly improves the motor's performance and stability.

[0013] 2. A stepper motor rotor and stepper motor with enhanced heat dissipation: The edges of the phase-change heat sink are provided with slots that engage with positioning strips on the rotor. This tight opening and closing design ensures good contact between the heat sink and the rotor, enabling more efficient heat transfer and dissipation. Heat generated by the rotor during operation is quickly transferred to the phase-change heat sink, allowing for faster heat dissipation and further improving the heat dissipation effect.

[0014] 3. This stepper motor rotor and stepper motor feature improved structural stability: The thickness of the phase-change heat sink is designed to be half the width of the positioning strip. This design allows for a tighter fit between the heat sink and the rotor, reducing the effects of mechanical vibration and thermal expansion on the heat sink. This design enhances the stability between the rotor and heat sink, improving the stability and durability of the overall structure.

[0015] 4. The stepper motor rotor and stepper motor have flexible structural adjustability: By providing a reinforcement component (including a positioning ring and a nut) on the rotating shaft, the number of rotors can be adjusted according to actual needs. This flexible design allows users to easily increase or decrease the number of rotors according to application requirements, thereby improving the applicability and flexibility of the stepper motor to meet different working conditions and application requirements.

[0016] 5. This stepper motor rotor and stepper motor increase equipment lifespan and reduce noise: Effective thermal management not only improves stepper motor performance but also helps extend the lifespan of the equipment. The phase-change heat sink optimizes thermal management, reducing noise issues caused by overheating while improving the overall reliability and durability of the equipment. This design ensures longer-lasting use of the stepper motor and smoother operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0018] The structures, proportions, sizes, etc. disclosed in this specification are intended only to complement the contents disclosed in the specification and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes that do not affect the efficacy and objectives of the present invention shall still fall within the scope of the technical contents disclosed in the present invention.

[0019] Figure 1 This is a side view of the rotor installation of the stepping motor of the utility model;

[0020] Figure 2 This is an external schematic diagram of the stepping motor of the utility model;

[0021] Figure 3 This is a schematic diagram of the bottom of the rotor and phase change heat sink of the utility model;

[0022] Figure 4 This is a schematic diagram of the disassembled upper side of the rotor and phase change heat sink of the utility model;

[0023] Figure 5 This is a schematic diagram of the bottom of the stepper motor rotor of the utility model.

[0024] Legend:

[0025] 1. Rotating shaft; 101. Bearing; 2. Positioning ring; 201. Nut; 3. Rotor; 301. Positioning strip; 302. Docking groove; 4. Phase change heat sink; 401. Card slot. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Embodiment: A stepper motor rotor and a stepper motor, such as Figure 1 - Figure 5As shown; it includes a rotating shaft 1, a bearing 101 is installed on the front end of the rod of the rotating shaft 1, and multiple groups of superimposed rotors 3 are sleeved on the rod of the rotating shaft 1. An annular phase change heat sink 4 is arranged between each group of rotors 3, and a circle of card groove strips 401 are provided at the edge of the phase change heat sink 4. A positioning strip 301 that is engaged with the card groove strip 401 is installed at the edge of one side of the rotor 3, and a docking groove 302 that is engaged with the end face positioning strip 301 of the adjacent rotor 3 is provided on the other side of the rotor 3. The phase change heat sink 4 is sleeved on the rotating shaft 1, and a reinforcement component for limiting between the multiple groups of rotors 3 is provided on the rotating shaft 1. The phase change heat sink 4 adopts an annular gasket of phase change material, which can quickly absorb heat between the multiple groups of superimposed rotors 3 and dissipate heat outward by the multiple groups of phase change heat sinks 4, thereby maintaining the rotation stability of the phase change heat sink 4.

[0028] Furthermore, the reinforcement assembly includes a positioning ring 2 fixed to the shaft 1, and a nut 201 threadedly sleeved onto the shaft 1. The positioning ring 2 is located on one end near the bearing 101, and the nut 201 is located on the other end of the shaft 1. (By providing the reinforcement assembly on the shaft 1, the number of rotors 3 can be increased or decreased according to the specifications of the long end of the shaft 1. After the required rotors 3 are installed on the shaft 1, the multiple sets of nut 201 at the rear end of the shaft 1 are rotated to abut against the end faces of the corresponding rotors 3, and the multiple sets of rotors 3 are fixed to the shaft 1, making it easy to adjust the number of rotors 3 on the shaft 1.)

[0029] Furthermore, at least two groups of nut members 201 are provided on the rod of the rotating shaft 1 , and elastic washers are provided between adjacent nut members 201 .

[0030] Furthermore, the thickness of the phase change heat sink 4 is half the width of the positioning strip 301 .

[0031] The present application also proposes a stepper motor, which includes the above-mentioned stepper motor rotor. The specific structure of the stepper motor rotor 3 refers to the above-mentioned embodiment. Since this stepper motor adopts all the technical solutions of all the above-mentioned embodiments, it also has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0032] The working principle of this utility model:

[0033] The stepper motor is equipped with multiple sets of annular phase-change heat sinks 4 stacked between the rotors 3. These heat sinks, made of phase-change material, absorb and dissipate heat generated by the rotors during operation. The properties of phase-change material cause it to undergo a phase change (for example, from solid to liquid) at a specific temperature. This process absorbs a large amount of heat, rapidly reducing the rotor's temperature and preventing overheating.

[0034] Enhanced heat dissipation: The edges of the phase-change heat sink 4 are provided with retaining grooves 401, which tightly engage with the positioning strips 301 of the rotor 3. This design ensures good contact between the heat sink and the rotor, effectively transferring heat. Heat generated by the rotor 3 during operation is quickly transferred to the phase-change heat sink, allowing it to absorb and dissipate heat more quickly.

[0035] Heat sink thickness design: The thickness of the phase change heat sink 4 is half the width of the positioning strip 301. This design reduces the gap between the heat sink and the rotor, further improving contact tightness and heat transfer efficiency. This improves the heat sink's heat exchange capacity and ensures smoother and more efficient heat transfer between the rotor and heat sink.

[0036] Combining stability and thermal management: Reinforced components on shaft 1 maintain effective coordination between rotor 3 and phase-change heat sink 4. In actual operation, the rotor's rotation and the heat exchange from the heat sink form a good dynamic balance, effectively maintaining system stability. All of this is based on efficient heat dissipation.

[0037] Structural Adjustment Flexibility: The number of rotors 3 can be adjusted as needed through the reinforcement assembly (including the positioning ring 2 and the nut 201). This design allows the rotors 3 to be flexibly increased or decreased according to application requirements, making it easier for users to adjust the stepper motor according to actual needs, thereby improving the practicality and flexibility of the device.

[0038] Enhanced stability: The thickness of the phase change heat sink 4 is half the width of the positioning strip 301. This design makes the fit between the heat sink and the rotor more stable, reduces the relative movement caused by mechanical vibration or thermal expansion, and thus improves the stability and durability of the overall structure.

[0039] Reduced Noise: Phase change heat sinks may reduce noise issues caused by overheating by improving thermal management.

[0040] Increased device life: Effective thermal management and structural stability help extend the service life of stepper motors and their rotors.

[0041] In summary, every part of the design is designed to improve the performance, flexibility and stability of the stepper motor, while increasing the reliability and service life of the equipment.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A stepper motor rotor, comprising a rotating shaft (1), wherein a bearing (101) is mounted on the front end of the shaft (1), and characterized in that: Multiple groups of superimposed rotors (3) are sleeved on the rod of the rotating shaft (1), and an annular phase-change heat sink (4) is provided between each group of rotors (3). A circle of clamping grooves (401) is provided at the edge of the phase-change heat sink (4), and a positioning strip (301) that is engaged with the clamping groove (401) is installed at the edge of one side of the rotor (3). A docking groove (302) that is engaged with the end face positioning strip (301) of the adjacent rotor (3) is provided on the other side of the rotor (3). The phase-change heat sink (4) is sleeved on the rotating shaft (1), and a reinforcing component for limiting between the multiple groups of rotors (3) is provided on the rotating shaft (1).

2. A stepper motor rotor according to claim 1, characterized in that: The reinforcement assembly comprises a positioning ring (2) fixed on the shaft (1) rod, and a nut member (201) threadedly sleeved on the shaft (1) rod, the positioning ring (2) being located near one end of the bearing (101), and the nut member (201) being located on the other end of the shaft (1) rod.

3. A stepper motor rotor according to claim 2, characterized in that: At least two groups of nut members (201) are provided on the rod of the rotating shaft (1), and elastic washers are provided between adjacent nut members (201).

4. The stepper motor rotor according to claim 1, characterized in that: The thickness of the phase-change heat sink (4) is half the width of the positioning strip (301).

5. A stepping motor, characterized in that: The invention comprises a stepping motor rotor as described in any one of claims 1 to 4.

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