High-precision closed-loop motor

Abstract

The utility model relates to a high-precision closed-loop motor, which belongs to the technical field of closed-loop motors and comprises a closed-loop motor body, a circuit assembly is arranged at the bottom of the closed-loop motor body, a heat dissipation assembly is arranged outside the closed-loop motor body, and the heat dissipation assembly comprises a protective outer frame sleeved on the outer side wall of the closed-loop motor body. A connecting rotating shaft is arranged in the protective outer frame and fixedly connected with an output shaft of the closed-loop motor body, a plurality of cooling fans are fixedly installed on the circumference of the side wall of the connecting rotating shaft at equal intervals, a plurality of ventilation holes are formed in the top wall face of the protective outer frame, and the bottom ends of the ventilation holes are in an arc shape. The bottom end of the vent hole is aligned with the side wall of the connecting rotating shaft; according to the utility model, airflow flows from bottom to top through the vent holes, so that heat on the side wall of the closed-loop motor body is taken away, and the heat dissipation effect of the closed-loop motor body is improved; the problems that an existing closed-loop motor is poor in heat dissipation effect, and the working precision is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of closed-loop motors, in particular to a high-precision closed-loop motor. Background Art

[0002] A closed-loop stepper motor is a stepper motor system that, unlike a traditional open-loop stepper motor system, has a feedback control mechanism that can monitor and correct the motor's position error in real time to improve performance and accuracy. Closed-loop motors have the following features: feedback control, step-out correction, high accuracy and controllability, load disturbance resistance, and micro-stepping support.

[0003] The Chinese patent with publication number CN215073690U discloses a high-precision closed-loop integrated machine, which relates to the field of stepper motor equipment, and includes a stepper motor body and a control module body, the end of the control module body is provided with a rear end cover, and the rear end cover is provided with a heat dissipation device, and the heat dissipation device includes a heat dissipation fan and a heat sink, and the heat sink is attached to the control module body, and the heat dissipation fan is attached to the heat sink and is used to cool the heat sink. The application has the effect of improving the heat dissipation of the closed-loop integrated machine and thus improving the working accuracy of the closed-loop integrated machine.

[0004] In the above-mentioned prior art scheme, the effect of improving the working accuracy of the closed-loop all-in-one machine is achieved by improving the heat dissipation of the closed-loop all-in-one machine. However, in the above-mentioned prior art scheme, a series of heat conduction treatments are used to concentrate the heat around the cooling fan, and the airflow generated by the cooling fan is used to take the heat away to complete the heat dissipation. The heat of the closed-loop motor is concentrated in the middle position of the fuselage, and the heat conduction requires a certain amount of time. The middle position of the fuselage cannot be dissipated immediately, which causes heat to easily accumulate, thereby affecting the accuracy. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a high-precision closed-loop motor, which allows air to flow from bottom to top through the vents, thereby taking away the heat on the side wall of the closed-loop motor body and improving the heat dissipation effect of the closed-loop motor body.

[0006] The technical solution for achieving the purpose of the utility model is: a high-precision closed-loop motor, including a closed-loop motor body, a circuit component is arranged at the bottom of the closed-loop motor body, a heat dissipation component is arranged outside the closed-loop motor body, the heat dissipation component includes a protective outer frame sleeved on the outer side wall of the closed-loop motor body, a connecting shaft is arranged inside the protective outer frame, the connecting shaft is fixedly connected to the output shaft of the closed-loop motor body, a plurality of cooling fans are fixedly installed at equal intervals on the circumference of the side wall of the connecting shaft, a plurality of ventilation holes are opened on the top wall of the protective outer frame, the bottom ends of the ventilation holes are arc-shaped, and the bottom ends of the ventilation holes are aligned with the side walls of the connecting shaft, and an air inlet hole is opened on the inner bottom wall of the protective outer frame.

[0007] In some embodiments, the circuit assembly includes a circuit main board located at the bottom end of the closed-loop motor body, the circuit main board is electrically connected to the closed-loop motor body, a connecting wire is electrically connected to the side wall of the circuit main board, and an end of the connecting wire away from the circuit main board is electrically connected to a power interface.

[0008] In some embodiments, the circuit main board is arranged at the inner bottom end of the protective outer frame, the bottom wall of the circuit main board is fixedly connected with a support spring, and the bottom end of the support spring is fixedly connected to the inner bottom wall of the protective outer frame.

[0009] In some embodiments, a dustproof component is disposed outside the protective outer frame, and the dustproof component includes a dustproof net at the bottom end of the air inlet, and a plurality of fixing frames are fixedly mounted on the side wall of the dustproof net.

[0010] In some embodiments, a heat dissipation fin is fixedly mounted on the bottom wall of the circuit main board.

[0011] In some embodiments, a plurality of connecting bolts are disposed inside the protective outer frame, and the plurality of connecting bolts penetrate the interior of the closed-loop motor body and are threadedly connected to the inner bottom wall of the protective outer frame.

[0012] Compared with the prior art, the utility model has the following significant advantages:

[0013] First, the utility model drives the connecting shaft and the cooling fan to rotate through the rotation of the output shaft of the closed-loop motor body, so that the cooling fan generates airflow, and the airflow enters the bottom end of the vent hole and flows upward through the bottom end of the vent hole, thereby taking away the heat on the side wall of the closed-loop motor body. An air inlet is provided on the inner bottom wall of the protective outer frame; the air inlet is used to conveniently introduce external air into the interior of the protective outer frame, so that the air inside the protective outer frame flows, thereby improving the heat dissipation effect of the closed-loop motor body; the problem that the existing closed-loop motor has poor heat dissipation effect and affects the working accuracy is solved.

[0014] Second, the utility model supports the circuit main board through the support spring to ensure the stable position of the circuit main board. At the same time, the elasticity of the support spring is utilized to make the circuit main board have a better shock absorbing effect, thereby reducing the damage to the support spring caused by external vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is the front view of the high-precision closed-loop motor of the utility model;

[0017] Figure 2 This is a partial cross-sectional view of the utility model high-precision closed-loop motor;

[0018] Figure 3It is a bottom view of the high-precision closed-loop motor of the utility model.

[0019] Description of reference numerals:

[0020] 1. Closed-loop motor body; 2. Heat dissipation assembly; 21. Protective outer frame; 22. Ventilation hole; 23. Connecting shaft; 24. Cooling fan; 25. Air inlet; 3. Circuit assembly; 31. Circuit board; 32. Connecting wire; 33. Power interface; 34. Heat dissipation fin; 35. Support spring; 4. Dustproof assembly; 41. Dustproof net; 42. Fixing bracket; 5. Connecting bolts. DETAILED DESCRIPTION

[0021] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a high-precision closed-loop motor through improvement. The technical solution of the utility model is:

[0023] like Figure 1 - Figure 2As shown, a high-precision closed-loop motor comprises a closed-loop motor body 1, a circuit assembly 3 for providing power to the closed-loop motor body 1 is arranged at the bottom of the closed-loop motor body 1, the circuit assembly 3 comprises a circuit main board 31 at the bottom of the closed-loop motor body 1, the circuit main board 31 is electrically connected to the closed-loop motor body 1, a connecting line 32 is electrically connected to the side wall of the circuit main board 31, and an end of the connecting line 32 away from the circuit main board 31 is electrically connected to a power interface 33; by electrically connecting the power interface 33 to an external power source, the circuit main board 31 can provide power to the closed-loop motor body 1, so as to facilitate the operation of the closed-loop motor body 1, a heat dissipation assembly 2 is arranged on the outside of the closed-loop motor body 1, the heat dissipation assembly 2 comprises a protective outer frame 21 sleeved on the outer side wall of the closed-loop motor body 1, and a connecting shaft 23 is arranged inside the protective outer frame 21, The connecting shaft 23 is fixedly connected to the output shaft of the closed-loop motor body 1, and a plurality of cooling fans 24 are fixedly installed on the side wall of the connecting shaft 23 at equal intervals. The top wall of the protective outer frame 21 is provided with a plurality of air vents 22, and the bottom ends of the air vents 22 are arc-shaped, and the bottom ends of the air vents 22 are aligned with the side walls of the connecting shaft 23; the rotation of the output shaft of the closed-loop motor body 1 drives the connecting shaft 23 and the cooling fan 24 to rotate, so that the cooling fan 24 generates airflow, and the airflow enters the bottom ends of the air vents 22 and flows upward through the bottom ends of the air vents 22, thereby taking away the heat on the side walls of the closed-loop motor body 1, and the inner bottom wall of the protective outer frame 21 is provided with air inlet holes 25; the air inlet holes 25 are used to conveniently introduce external air into the interior of the protective outer frame 21, so that the air inside the protective outer frame 21 flows, thereby improving the heat dissipation effect of the closed-loop motor body 1.

[0024] like Figure 2 and Figure 3 As shown, in one embodiment, in order to prevent external dust from entering the interior of the protective outer frame 21, a dustproof component 4 is provided on the outside of the protective outer frame 21, and the dustproof component 4 includes a dustproof net 41 at the bottom end of the air inlet 25, and a plurality of fixing frames 42 are fixedly installed on the side wall of the dustproof net 41; the fixing frames 42 are threadedly connected to the bottom wall of the protective outer frame 21 through bolts passing through them; the external dust is filtered by the dustproof net 41 to prevent external dust from entering the interior of the protective outer frame 21.

[0025] like Figure 2As shown, in one embodiment, in order to prevent the surface temperature of the circuit main board 31 from being too high, the circuit main board 31 is arranged at the inner bottom end of the protective outer frame 21, and a heat dissipation fin 34 is fixedly installed on the bottom wall of the circuit main board 31; heat dissipation silicone grease is arranged between the heat dissipation fin 34 and the circuit main board 31, and the heat dissipation silicone grease makes it easier for the heat on the surface of the circuit main board 31 to be introduced into the heat dissipation fin 34, and the heat dissipation area of ​​the circuit main board 31 is increased by the heat dissipation fin 34, so that the heat dissipation of the circuit main board 31 is convenient, and the bottom wall of the circuit main board 31 is fixedly connected with a support spring 35, and the bottom end of the support spring 35 is fixedly connected to the inner bottom wall of the protective outer frame 21; the circuit main board 31 is supported by the support spring 35 to ensure the stable position of the circuit main board 31, and at the same time, the elasticity of the support spring 35 is utilized to make the circuit main board 31 have a better shock absorption effect, thereby reducing the damage to the support spring 35 caused by external vibration.

[0026] like Figure 1 and Figure 3 As shown, in one embodiment, a plurality of connecting bolts 5 are provided inside the protective outer frame 21, and the plurality of connecting bolts 5 pass through the interior of the closed-loop motor body 1 and are threadedly connected to the inner bottom wall of the protective outer frame 21; the protective outer frame 21 is connected to the closed-loop motor body 1 through the connecting bolts 5 to ensure that the position of the protective outer frame 21 is stable.

[0027] The specific working method is: the rotation of the output shaft of the closed-loop motor body 1 drives the connecting shaft 23 and the cooling fan 24 to rotate, so that the cooling fan 24 generates airflow, the airflow enters the bottom end of the vent 22, and flows upward through the bottom end of the vent 22, thereby taking away the heat on the side wall of the closed-loop motor body 1, and an air inlet 25 is provided on the inner bottom wall of the protective outer frame 21; the air inlet 25 is used to conveniently introduce external air into the interior of the protective outer frame 21, so that the air inside the protective outer frame 21 flows, thereby improving the heat dissipation effect of the closed-loop motor body 1, and filtering external dust through the dustproof net 41 to prevent external dust from entering the interior of the protective outer frame 21; the circuit main board 31 is supported by the support spring 35 to ensure that the position of the circuit main board 31 is stable, and at the same time, the elasticity of the support spring 35 is used to make the circuit main board 31 have a better shock absorption effect, thereby reducing the damage to the support spring 35 caused by external vibration.

[0028] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A high-precision closed-loop motor, comprising a closed-loop motor body (1), a circuit component (3) being arranged at the bottom of the closed-loop motor body (1), characterized in that: A heat dissipation component (2) is arranged outside the closed-loop motor body (1), and the heat dissipation component (2) includes a protective outer frame (21) sleeved on the outer wall of the closed-loop motor body (1), and a connecting shaft (23) is arranged inside the protective outer frame (21), and the connecting shaft (23) is fixedly connected to the output shaft of the closed-loop motor body (1), and a plurality of heat dissipation fans (24) are fixedly installed on the side wall of the connecting shaft (23) at equal intervals, and a plurality of ventilation holes (22) are provided on the top wall of the protective outer frame (21), and the bottom ends of the ventilation holes (22) are in an arc shape, and the bottom ends of the ventilation holes (22) are aligned with the side wall of the connecting shaft (23), and an air inlet hole (25) is provided on the inner bottom wall of the protective outer frame (21).

2. A high-precision closed-loop motor according to claim 1, characterized in that: The circuit assembly (3) comprises a circuit main board (31) located at the bottom end of the closed-loop motor body (1); the circuit main board (31) and the closed-loop motor body (1) are electrically connected together; a connecting wire (32) is electrically connected to a side wall of the circuit main board (31); and an end of the connecting wire (32) away from the circuit main board (31) is electrically connected to a power interface (33).

3. A high-precision closed-loop motor according to claim 2, characterized in that: The circuit main board (31) is arranged at the inner bottom end of the protective outer frame (21), the bottom wall surface of the circuit main board (31) is fixedly connected with a support spring (35), and the bottom end of the support spring (35) is fixedly connected to the inner bottom wall surface of the protective outer frame (21).

4. A high-precision closed-loop motor according to claim 1, characterized in that: A dustproof component (4) is arranged outside the protective outer frame (21), and the dustproof component (4) includes a dustproof net (41) located at the bottom end of the air inlet (25), and a plurality of fixing frames (42) are fixedly mounted on the side wall of the dustproof net (41).

5. A high-precision closed-loop motor according to claim 2, characterized in that: A heat dissipation fin (34) is fixedly mounted on the bottom wall of the circuit main board (31).

6. A high-precision closed-loop motor according to claim 1, characterized in that: A plurality of connection bolts (5) are arranged inside the protective outer frame (21), and the plurality of connection bolts (5) penetrate the interior of the closed-loop motor body (1) and are threadedly connected to the inner bottom wall surface of the protective outer frame (21).

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