Motor actuator

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a motor actuator. Comprising a mounting frame, a driving shaft is rotationally connected to the mounting frame, and first inserting grooves are formed in the two ends of the driving shaft; the driving gear is arranged on the driving shaft in a sleeving manner, and two first arc-shaped limiting holes are formed in the driving gear; the driven gear is arranged on the driving gear in a meshed mode, and a second inserting groove is further formed in the circumference of the driven gear; the spring reset mechanism comprises two reset assemblies mounted on the mounting frame; the reset assembly comprises a fixing shaft installed on the installation frame, a limiting shaft inserted into a first arc-shaped limiting hole, two spring installation rods located on the two sides of the driving gear correspondingly, and two reset springs arranged on the two spring installation rods in a sleeving mode correspondingly. Through forward and reverse rotation of the driving gear, the external device on the second inserting groove swings, and when the driving gear is powered off in the forward rotation and reverse rotation processes, the two reset assemblies of the spring reset mechanism can reset the driving gear.

Description

Technical Field

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

[0002] In the early industrial field, many controls were manual and semi-automatic. During operation, the human body directly contacted the dangerous parts of industrial equipment, which could easily cause harm to people and was very unsafe. Based on the above reasons, actuators were gradually produced and applied to industry and other control fields, reducing and avoiding personal injury and equipment damage, greatly improving control accuracy and efficiency, and also greatly improving production efficiency.

[0003] In the prior art, the input end of the motor actuator is connected to a driving motor, and the output end is connected to an external device. The rotating shaft of the driving motor drives the actuator to rotate forward and reverse, thereby causing the external device to operate. However, the motor actuator often loses power during use, and after eliminating the power failure, it needs to be manually reset, which is very troublesome. Utility Model Content

[0004] The purpose of the utility model is to provide a motor actuator to solve the above-mentioned technical problems, which drives the driven gear to rotate forward and backward through the forward and backward rotation of the driving gear, so as to realize the swing of the second plug-in slot on the driven gear, thereby achieving the swing of the external device on the second plug-in slot, and the two reset components of the spring reset mechanism are reset alternately, so that the driving gear can be reset when the power is cut off during the forward and reverse rotation processes.

[0005] In view of this, the utility model provides a motor actuator, comprising:

[0006] A mounting frame, on which a driving shaft is rotatably connected, and both ends of the driving shaft are provided with a first plug-in slot;

[0007] A driving gear is sleeved on the driving shaft, and two first arc-shaped limiting holes are symmetrically arranged on the driving gear;

[0008] A driven gear is rotatably connected to the mounting frame, the driven gear is meshed with the driving gear, and a second plug-in slot is provided on the circumference of the driven gear;

[0009] A spring return mechanism, comprising two return assemblies mounted on a mounting frame;

[0010] Among them, the reset assembly includes a fixed shaft installed on the mounting frame, a limiting shaft inserted in the first arc-shaped limiting hole, two spring mounting rods respectively located on both sides of the driving gear, and two reset springs respectively sleeved on the two spring mounting rods, the limiting shaft slides in the first arc-shaped limiting hole, a first through hole is opened at one end of the spring mounting rod, the limiting shaft is inserted in the first through hole, a strip slide groove is opened at the other end of the spring mounting rod, and the fixed shaft is inserted in the strip slide groove.

[0011] In the above solution, further, the reset component also includes:

[0012] A limit plate, the limit plate abuts against the fixed shaft, and second through holes are provided at both ends of the limit plate, and two spring mounting rods are respectively inserted into the two second through holes;

[0013] Wherein, the return spring abuts against the limit plate.

[0014] In the above solution, further, the driving gear and the driven gear are both provided with limiting arc surfaces on their circumferences, and the second plug-in slot is opened on the limiting arc surface of the driven gear.

[0015] In the above solution, further, the mounting frame includes:

[0016] Two mounting plates, the two mounting plates are facing each other, and the two mounting plates are connected by a plurality of connecting shafts;

[0017] Among them, the driving gear, the driven gear and the spring return mechanism are all located between the two mounting plates, and the two mounting plates are each provided with two second arc-shaped limit holes, the two second arc-shaped limit holes are directly opposite, and the two ends of the limit shaft are respectively inserted into the second arc-shaped limit holes on the two mounting plates.

[0018] In the above solution, further, a cover plate is provided on the outer side of the mounting plate, and the end of the limiting shaft abuts against the cover plate.

[0019] The beneficial effects of the utility model are:

[0020] 1. The driving gear rotates forward and backward to drive the driven gear to rotate forward and backward, so that the second plug-in slot swings on the driven gear, thereby achieving the swing of the external device on the second plug-in slot, and the two reset components of the spring reset mechanism are reset alternately, so that the driving gear can be reset when the power is cut off during the forward and reverse rotation processes;

[0021] 2. The limit arc surface is used to limit the rotation angle range of the driving gear and the driven gear to prevent the driving gear and the driven gear from rotating too much and exceeding the predetermined range. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall structure of the utility model without one of the mounting plates;

[0024] Figure 3 It is a front structural schematic diagram of the utility model without one of the mounting plates;

[0025] Figure 4 It is a schematic diagram of the structure of the utility model from above with one of the mounting plates removed.

[0026] The symbols in the figure are:

[0027] 1. Mounting frame; 11. Mounting plate; 12. Connecting shaft; 2. Driving gear; 3. Driven gear; 4. Spring reset mechanism; 41. Reset assembly; 411. Fixed shaft; 412. Limiting shaft; 413. Spring mounting rod; 414. Reset spring; 415. Limiting plate; 5. Driving shaft; 6. First plug-in slot; 7. First arc-shaped limiting hole; 8. Second plug-in slot; 9. First through hole; 10. Strip slide groove; 13. Second through hole; 14. Limiting arc surface; 15. Second arc-shaped limiting hole; 16. Cover plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0029] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] Embodiment 1:

[0031] This embodiment provides a motor actuator, including:

[0032] A mounting frame 1, on which a driving shaft 5 is rotatably connected, and both ends of the driving shaft 5 are provided with a first plug-in slot 6;

[0033] The driving gear 2 is sleeved on the driving shaft 5, and two first arc-shaped limiting holes 7 are symmetrically arranged on the driving gear 2;

[0034] The driven gear 3 is rotatably connected to the mounting frame 1, and the driven gear 3 is meshed with the driving gear 2. A second plug-in slot 8 is also provided on the circumference of the driven gear 3;

[0035] The spring return mechanism 4 comprises two return assemblies 41 mounted on the mounting frame 1;

[0036] Among them, the reset assembly 41 includes a fixed shaft 411 installed on the mounting frame 1, a limiting shaft 412 inserted in the first arc-shaped limiting hole 7, two spring mounting rods 413 respectively located on both sides of the driving gear 2, and two reset springs 414 respectively sleeved on the two spring mounting rods 413, the limiting shaft 412 slides in the first arc-shaped limiting hole 7, a first through hole 9 is opened at one end of the spring mounting rod 413, the limiting shaft 412 is inserted in the first through hole 9, a strip slide groove 10 is opened at the other end of the spring mounting rod 413, and the fixed shaft 411 is inserted in the strip slide groove 10.

[0037] In the present technical solution, the rotating shaft of the motor can be connected to the first plug-in slot 6 at one end of the driving shaft 5, and the external device can be installed in the second plug-in slot 8. The rotating shaft of the motor continuously rotates forward and reversely, thereby driving the driving gear 2 to rotate forward and reversely, and then driving the driven gear 3 to rotate forward and reversely, so that the external device installed on the second plug-in slot 8 can swing back and forth. The rotating shaft of the motor is connected to the first plug-in slot 6 of the driving shaft 5 and rotates, which can improve the stability of the rotation of the driving gear 2, and the power can be directly transmitted from the motor to the driving gear 2, reducing energy consumption.

[0038] like Figure 4 As shown, the spring reset mechanism 4 is used to reset the driving gear 2, thereby resetting the driven gear 3, and further resetting the external device installed on the second plug-in slot 8.

[0039] The two reset components 41 of the spring reset mechanism 4 are respectively located on the left and right sides of the driving shaft 5, and the two first arc-shaped limit holes 7 are coaxial with the driving gear 2, and the two first arc-shaped limit holes 7 are symmetrically arranged. Grease can be applied to the driving shaft 5, the first through hole 9, the strip slide 10 and the first arc-shaped limit holes 7 to reduce friction during movement.

[0040] In the initial state, the two limiting shafts 412 are respectively located at one end of the two first arc-shaped limiting holes 7, and the two limiting shafts 412 are close to each other. When the rotating shaft of the motor rotates clockwise, the driving gear 2 drives the driven gear 3 to rotate clockwise, the reset component 41 on the left is stationary, and the limiting shaft 412 of the reset component 41 on the right is limited by the first arc-shaped limiting hole 7. The limiting shaft 412 rotates clockwise, forcing the spring installation rod 413 to slide on the fixed shaft 411 through the strip slide groove 10. The fixed shaft 411 is used to limit the spring installation rod 413. At the same time, the reset spring 414 is squeezed and elastically deformed.

[0041] After the motor shaft rotates to a certain angle, it starts to rotate counterclockwise. At this time, the reset spring 414 of the reset assembly 41 on the right gradually recovers its deformation. When the driving gear 2 rotates counterclockwise back to the initial position, the reset spring 414 of the reset assembly 41 on the right resets the reset assembly 41. At this time, the reset assembly 41 on the right is stationary. The motor shaft continues to rotate counterclockwise, and then the limit shaft 412 of the reset assembly 41 on the left is limited by the first arc-shaped limit hole 7. The limit shaft 412 rotates counterclockwise, forcing the spring mounting rod 413 to slide on the fixed shaft 411 through the strip slide groove 10. At the same time, the reset spring 414 is squeezed and elastically deformed.

[0042] After the motor shaft rotates to a certain angle, it continues to rotate clockwise, and so on, the reset components 41 on the left and right sides continuously reset the driving gear 2.

[0043] When the motor stops rotating after power is cut off, for example, the motor shaft is in clockwise rotation and the power is cut off, the reset spring 414 of the reset assembly 41 on the right side is in a compressed state. After power is cut off, the elastic repulsive force of the reset spring 414 forces the limit shaft 412 to rotate counterclockwise, so that the reset assembly 41 on the right side resets the driving gear 2, and then resets the driven gear 3. Therefore, the utility model drives the driven gear 3 to rotate forward and backward through the forward and reverse rotation of the driving gear 2, so that the second plug-in slot 8 swings on the driven gear 3, so that the external device on the second plug-in slot 8 swings, and the two reset assemblies 41 of the spring reset mechanism 4 are reset alternately, so that the driving gear 2 can be reset when the power is cut off during the forward and reverse rotation process. The utility model has a simple structure and strong structural stability. The power-off reset function of the spring reset mechanism 4 improves safety, and facilitates the external device on the second plug-in slot 8 to smoothly proceed to the next step.

[0044] Embodiment 2:

[0045] This embodiment provides a motor actuator, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] The reset component 41 further includes:

[0047] A limit plate 415, the limit plate 415 abuts against the fixed shaft 411, and both ends of the limit plate 415 are provided with second through holes 13, and two spring mounting rods 413 are respectively inserted into the two second through holes 13;

[0048] The return spring 414 abuts against the limiting plate 415 .

[0049] In the present technical solution, a limiting step surface can be provided at one end of the spring mounting rod 413 close to the first through hole 9, one end of the return spring 414 abuts against the limiting step surface, and the other end of the return spring 414 abuts against the limiting plate 415, thereby limiting the spring.

[0050] The limit plate 415 always contacts the fixed shaft 411 through the elastic repulsive force of the reset spring 414. The second through hole 13 on the limit plate 415 is used to limit the spring mounting rod 413 in the vertical direction to ensure that the spring mounting rod 413 does not move up and down while maintaining the distance between the two spring mounting rods 413.

[0051] Embodiment 3:

[0052] This embodiment provides a motor actuator, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] The driving gear 2 and the driven gear 3 are both provided with limiting arc surfaces 14 on their circumferences, and the second plug-in slot 8 is opened on the limiting arc surface 14 of the driven gear 3 .

[0054] In the present technical solution, part of the gear teeth are continuously arranged on the circumference of the driving gear 2 and the driven gear 3, so that the driving gear 2 and the driven gear 3 mesh with each other. The surface of the limit arc surface 14 is a smooth arc surface, and the radius of the limit arc surface 14 is greater than or equal to the radius of the tooth top circle, so as to limit the rotation angle range of the driving gear 2 and the driven gear 3, and avoid the driving gear 2 and the driven gear 3 from rotating too much and exceeding the predetermined range, resulting in damage to the motor actuator and the external device on the second plug slot 8.

[0055] Embodiment 4:

[0056] This embodiment provides a motor actuator, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0057] The mounting frame 1 comprises:

[0058] Two mounting plates 11, the two mounting plates 11 are facing each other, and the two mounting plates 11 are connected by a plurality of connecting shafts 12;

[0059] Among them, the driving gear 2, the driven gear 3 and the spring return mechanism 4 are all located between the two mounting plates 11, and the two mounting plates 11 are each provided with two second arc-shaped limit holes 15, and the two second arc-shaped limit holes 15 are opposite to each other, and the two ends of the limit shaft 412 are respectively inserted into the second arc-shaped limit holes 15 on the two mounting plates 11.

[0060] In the technical solution, the two mounting plates 11 are connected by a plurality of connecting shafts 12. The mounting plate 11 may be rectangular, and there may be four connecting shafts 12, which are respectively installed at the corners of the mounting plate 11. The connecting shaft 12 may be a round tube structure, and the two mounting plates 11 may be fixed by inserting screws into the connecting shaft 12, which facilitates installation and disassembly.

[0061] The two second arc-shaped limiting holes 15 are used to further limit the limiting shaft 412 and can also play a guiding role to improve the stability of the rotation of the limiting shaft 412.

[0062] Embodiment 5:

[0063] This embodiment provides a motor actuator, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] A cover plate 16 is disposed outside the mounting plate 11 , and an end of the limiting shaft 412 abuts against the cover plate 16 .

[0065] In the present technical solution, the cover plate 16 is used to protect the limiting shaft 412 on the second arc-shaped limiting hole 15 to prevent external interference with the limiting shaft 412 .

[0066] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A motor actuator, characterized in that: include: A mounting frame (1), a driving shaft (5) being rotatably connected to the mounting frame (1), and first plug-in slots (6) being provided at both ends of the driving shaft (5); The driving gear (2) is sleeved on the driving shaft (5), and two first arc-shaped limiting holes (7) are symmetrically arranged on the driving gear (2); A driven gear (3) is rotatably connected to the mounting frame (1), the driven gear (3) is meshed with the driving gear (2), and a second plug-in slot (8) is also provided on the circumference of the driven gear (3); A spring return mechanism (4) comprising two return assemblies (41) mounted on the mounting frame (1); The reset assembly (41) comprises a fixed shaft (411) mounted on the mounting frame (1), a limiting shaft (412) inserted into the first arc-shaped limiting hole (7), two spring mounting rods (413) respectively located on both sides of the driving gear (2), and two reset springs (414) respectively sleeved on the two spring mounting rods (413); the limiting shaft (412) slides in the first arc-shaped limiting hole (7); one end of the spring mounting rod (413) is provided with a first through hole (9); the limiting shaft (412) is inserted into the first through hole (9); the other end of the spring mounting rod (413) is provided with a strip-shaped slide groove (10); the fixed shaft (411) is inserted into the strip-shaped slide groove (10).

2. The motor actuator according to claim 1, characterized in that: The reset component (41) further comprises: A limiting plate (415), the limiting plate (415) abuts against the fixed shaft (411), both ends of the limiting plate (415) are provided with second through holes (13), and two spring mounting rods (413) are respectively inserted into the two second through holes (13); Wherein, the return spring (414) abuts against the limiting plate (415).

3. The motor actuator according to claim 1, characterized in that: The driving gear (2) and the driven gear (3) are both provided with a limiting arc surface (14) on their circumferences, and the second plug-in slot (8) is opened on the limiting arc surface (14) of the driven gear (3).

4. The motor actuator according to claim 1, characterized in that: The mounting frame (1) comprises: Two mounting plates (11), the two mounting plates (11) are facing each other, and the two mounting plates (11) are connected by a plurality of connecting shafts (12); The driving gear (2), the driven gear (3) and the spring return mechanism (4) are all located between the two mounting plates (11); the two mounting plates (11) are each provided with two second arc-shaped limiting holes (15); the two second arc-shaped limiting holes (15) are directly opposite to each other; and the two ends of the limiting shaft (412) are respectively inserted into the second arc-shaped limiting holes (15) on the two mounting plates (11).

5. The motor actuator according to claim 4, characterized in that: A cover plate (16) is arranged on the outside of the mounting plate (11), and the end of the limiting shaft (412) abuts against the cover plate (16).

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