Driving motor with high torque output

Abstract

The utility model discloses a driving motor with large torque output, which comprises a fixed bracket, a first stepping motor, a driving screw rod and a second stepping motor, and is characterized in that the first stepping motor comprises a first motor shell, a first stator and a first rotor, and the first rotor comprises a first cylindrical magnet; the second stepping motor comprises a second motor shell, a second stator and a second rotor, and the second rotor comprises a second cylindrical magnet; a magnet sleeving rod is arranged at the rear end part of the driving screw rod; and the first cylindrical magnet and the second cylindrical magnet are respectively sleeved and fastened on the magnet sleeving rod. Through the structural design, the driving motor with large torque output has the advantages of novel structural design and large output torque, and can be effectively suitable for driving heavy-load execution pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a driving motor with high torque output. Background Art

[0002] The patent number is: ZL201720399161.1, and the patent name is: A Chinese utility model patent for a spring-type screw stepper motor, which discloses the following technical solutions, specifically: a spring-type screw stepper motor, including a stepper motor, a movable screw, and a fixed bracket installed on the front end side of the stepper motor, the stepper motor includes a cylindrical motor housing, the front end of the motor housing is fixed to the fixed bracket, a cylindrical magnet is embedded in the housing accommodating cavity inside the motor housing, and a winding frame is mounted on the periphery of the cylindrical magnet, the winding frame is wound with a coil winding, and the rear end of the movable screw passes through the magnet center hole of the cylindrical magnet and extends to the rear end side of the motor housing.

[0003] It should be pointed out that the above-mentioned spring-type screw stepper motor has the following defects. Specifically, for large-load actuators, the spring-type screw stepper motor has a problem of small driving torque, that is, it is difficult to drive large-load actuators. Utility Model Content

[0004] The utility model aims to provide a driving motor with large torque output in view of the deficiencies of the prior art. The driving motor with large torque output has a novel structural design, large output torque, and can be effectively applied to driving large-load actuators.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0006] A driving motor with high torque output includes a fixing bracket, a first stepper motor, and a driving screw, wherein the first stepper motor includes a first motor housing, a first stator and a first rotor respectively installed inside the first motor housing, the first motor housing is fastened with the fixing bracket, and the first rotor includes a first cylindrical magnet;

[0007] A magnet set rod is provided at the rear end of the driving screw rod, the driving screw rod and the magnet set rod are an integrated structure and the driving screw rod and the magnet set rod are coaxially arranged; the magnet set rod extends into the interior of the first motor housing, and the first cylindrical magnet set is fastened to the magnet set rod;

[0008] The driving motor with high torque output also includes a second stepping motor located at the rear side of the first stepping motor, the second stepping motor includes a second motor housing, a second stator and a second rotor respectively installed inside the second motor housing, the front surface of the second motor housing is connected to the rear surface of the first motor housing, and the second rotor includes a second cylindrical magnet;

[0009] The rear end of the magnet set rod extends into the interior of the second motor housing, and the second cylindrical magnet set is fastened to the magnet set rod.

[0010] The driving motor with large torque output further comprises a driving block, one end of which is provided with an internal threaded hole, the driving screw passes through the internal threaded hole of the driving block, and the external thread of the driving screw is meshed with the internal thread of the inner wall of the internal threaded hole;

[0011] The other end of the driving block is provided with an actuator connecting portion.

[0012] Wherein, the front end of the driving screw is rotatably connected to the fixed bracket through a front end bearing;

[0013] A stopper is fixedly mounted on the rear surface of the second motor housing, and the rear end of the magnet set rod is rotatably connected to the stopper via a rear end bearing.

[0014] Wherein, a spring sheet is arranged between the stopper and the rear end bearing, and the spring sheet elastically presses the rear end bearing forward.

[0015] The first motor housing and the second motor housing are respectively metal housings, the first motor housing is welded to the fixing bracket, and the front surface of the second motor housing is welded to the rear surface of the first motor housing.

[0016] Compared with the prior art, the utility model has the following beneficial effects, specifically: when working, the first stepper motor and the second stepper motor act synchronously, and the synchronously rotating first cylindrical magnet and the second cylindrical magnet drive the magnet set rod and the drive screw to rotate; compared with the prior art, the utility model is equivalent to driving the drive screw to rotate by two stepper motors at the same time. Compared with the single stepper motor driving method in the prior art, the utility model has a larger driving torque, that is, a larger output torque. Therefore, the drive motor with large torque output of the utility model has the advantages of novel structural design and large output torque, and can be effectively applied to the drive of large-load actuators. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is an exploded schematic diagram of the utility model.

[0020] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0021] exist Figures 1 to 3 Included are:

[0022] 1-fixed bracket; 2-first stepper motor; 21-first motor housing; 22-first stator; 23-first rotor; 231-first cylindrical magnet; 31-driving screw; 32-magnet set rod; 4-second stepper motor; 41-second motor housing; 42-second stator; 43-second rotor; 431-second cylindrical magnet; 5-driving shift block; 51-internal threaded hole; 52-actuator connection part; 61-front end bearing; 62-rear end bearing; 7-stop block; 8-spring. DETAILED DESCRIPTION

[0023] The present invention will be described below in conjunction with specific implementation methods.

[0024] Embodiment 1, as Figures 1 to 3 As shown, a driving motor with large torque output includes a fixed bracket 1, a first stepper motor 2, and a driving screw 31. The first stepper motor 2 includes a first motor housing 21, a first stator 22 and a first rotor 23 respectively installed inside the first motor housing 21, the first motor housing 21 is fastened with the fixed bracket 1, and the first rotor 23 includes a first cylindrical magnet 231.

[0025] Among them, Figure 2 and Figure 3 As shown, a magnet set rod 32 is provided at the rear end of the driving screw 31. The driving screw 31 and the magnet set rod 32 are an integrated structure and are coaxially arranged. The magnet set rod 32 extends into the interior of the first motor housing 21, and the first cylindrical magnet 231 is set and fastened to the magnet set rod 32.

[0026] Further, such as Figures 1 to 3 As shown, the driving motor with large torque output also includes a second stepper motor 4 located at the rear side of the first stepper motor 2, the second stepper motor 4 includes a second motor housing 41, a second stator 42 and a second rotor 43 respectively installed inside the second motor housing 41, the front surface of the second motor housing 41 is connected to the rear surface of the first motor housing 21, and the second rotor 43 includes a second cylindrical magnet 431.

[0027] Furthermore, the rear end of the magnet fitting rod 32 extends into the interior of the second motor housing 41 , and the second cylindrical magnet 431 is fitted and fastened to the magnet fitting rod 32 .

[0028] During the operation of the driving motor with high torque output of the first embodiment, the first stepper motor 2 and the second stepper motor 4 act synchronously. After the first stator 22 of the first stepper motor 2 is energized, it drives the first cylindrical magnet 231 to rotate. After the second stator 42 of the second stepper motor 4 is energized, it drives the second cylindrical magnet 431 to rotate. The first cylindrical magnet 231 and the second cylindrical magnet 431 rotate synchronously, and the synchronously rotating first cylindrical magnet 231 and the second cylindrical magnet 431 drive the magnet set rod 32 to rotate, thereby causing the driving screw 31 to rotate.

[0029] It should be emphasized that, compared with the prior art, the driving motor with large torque output of the first embodiment is equivalent to driving the driving screw 31 to rotate simultaneously by two stepper motors. Compared with the single stepper motor driving method in the prior art, the first embodiment has a larger driving torque, that is, the output torque is larger, and can be effectively applied to the driving of large-load actuators.

[0030] Therefore, through the above structural design, the driving motor with high torque output of the first embodiment has the advantages of novel structural design and large output torque, and can be effectively applied to driving large-load actuators.

[0031] Embodiment 2, as Figures 1 to 3 As shown, the difference between the second embodiment and the first embodiment is that the driving motor with large torque output further includes a driving block 5, one end of the driving block 5 is provided with an internal thread hole 51, the driving screw 31 passes through the internal thread hole 51 of the driving block 5, and the external thread of the driving screw 31 is meshed with the internal thread of the inner wall of the internal thread hole 51;

[0032] The other end of the driving block 5 is provided with an actuator connecting portion 52 .

[0033] In the process of the driving motor with high torque output driving the actuator to move in the second embodiment, the driving screw 31 rotates, the rotating driving screw 31 drives the driving block 5 to move, and the moving driving block 5 drives the actuator to move through the actuator connecting part 52.

[0034] Embodiment three, as Figure 2 and Figure 3 As shown, the difference between the third embodiment and the first embodiment is that the front end of the driving screw 31 is rotatably connected to the fixing bracket 1 through the front end bearing 61 .

[0035] A stopper 7 is fixedly mounted on the rear surface of the second motor housing 41 , and a rear end portion of the magnet set rod 32 is rotatably connected to the stopper 7 via a rear end bearing 62 .

[0036] In addition, a spring piece 8 is installed between the stopper 7 and the rear end bearing 62 , and the spring piece 8 elastically presses the rear end bearing 62 forward.

[0037] When the first stepper motor 2 and the second stepper motor 4 drive the magnet set rod 32 and the drive screw 31 to rotate, the spring piece 8 elastically presses the rear end bearing 62 forward, so that the drive screw 31 and the magnet set rod 32 are clamped between the front end bearing 61 and the rear end bearing 62, which can effectively reduce the axial movement of the drive screw 31.

[0038] Embodiment 4: The difference between Embodiment 4 and Embodiment 1 is that the first motor housing 21 and the second motor housing 41 are metal housings respectively, the first motor housing 21 is welded to the fixing bracket 1 , and the front surface of the second motor housing 41 is welded to the rear surface of the first motor housing 21 .

[0039] The stopper 7 can also be fixedly mounted on the rear surface of the second motor housing 41 by welding.

[0040] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A driving motor with a large torque output, comprising a fixing bracket (1), a first stepper motor (2), and a driving screw (31); the first stepper motor (2) comprises a first motor housing (21), a first stator (22) and a first rotor (23) respectively mounted inside the first motor housing (21); the first motor housing (21) is fastened with the fixing bracket (1), and the first rotor (23) comprises a first cylindrical magnet (231); A magnet set rod (32) is provided at the rear end of the driving screw rod (31); the driving screw rod (31) and the magnet set rod (32) are an integral structure and are coaxially arranged with each other; the magnet set rod (32) extends into the interior of the first motor housing (21), and the first cylindrical magnet (231) is set and fastened to the magnet set rod (32); Features: The high torque output drive motor further comprises a second stepper motor (4) located at the rear side of the first stepper motor (2); the second stepper motor (4) comprises a second motor housing (41), a second stator (42) and a second rotor (43) respectively mounted inside the second motor housing (41); the front surface of the second motor housing (41) is connected to the rear surface of the first motor housing (21); and the second rotor (43) comprises a second cylindrical magnet (431); The rear end of the magnet fitting rod (32) extends into the interior of the second motor housing (41), and the second cylindrical magnet (431) is fitted and fastened to the magnet fitting rod (32).

2. A driving motor with high torque output according to claim 1, characterized in that: The driving motor with high torque output also includes a driving block (5), one end of which is provided with an internal threaded hole (51), the driving screw rod (31) passes through the internal threaded hole (51) of the driving block (5), and the external thread of the driving screw rod (31) is meshed with the internal thread of the inner wall of the internal threaded hole (51); The other end of the driving block (5) is provided with an actuator connecting portion (52).

3. A driving motor with high torque output according to claim 1, characterized in that: The front end of the driving screw (31) is rotatably connected to the fixed bracket (1) via a front end bearing (61); A stopper (7) is fixedly mounted on the rear surface of the second motor housing (41), and a rear end portion of the magnet sleeve rod (32) is rotatably connected to the stopper (7) via a rear end bearing (62).

4. A driving motor with high torque output according to claim 3, characterized in that: A spring sheet (8) is arranged between the stopper (7) and the rear end bearing (62), and the spring sheet (8) elastically presses the rear end bearing (62) forward.

5. A driving motor with high torque output according to claim 1, characterized in that: The first motor housing (21) and the second motor housing (41) are respectively metal housings; the first motor housing (21) is welded to the fixing bracket (1); and the front surface of the second motor housing (41) is welded to the rear surface of the first motor housing (21).

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