Motor-driven rotary actuator structure

Abstract

The utility model discloses a motor-driven rotary actuator structure, which comprises a fixed bracket, a stepping motor and a driving worm gear, the stepping motor is fastened and mounted on the fixed bracket, a rotor of the stepping motor is provided with a driving worm extending forwards horizontally, and the driving worm is meshed with the driving worm gear; a metal rotating shaft which horizontally and transversely extends in the left-right direction is rotationally mounted on the fixed bracket above the driving worm, and the metal rotating shaft is perpendicular to the driving worm; the periphery of the metal rotating shaft is sleeved with a plastic part, the plastic part and the metal rotating shaft are of an integrated structure through injection molding, and the plastic part is provided with a driving swing arm extending outwards in the radial direction of the metal rotating shaft. The driving worm gear and the metal rotating shaft are coaxially arranged, and the driving worm gear is fastened to the metal rotating shaft or the plastic part in a sleeving mode. By means of the structural design, the motor-driven rotary actuator structure can effectively achieve vertical swing output and has the advantage of being novel in structural design.

Description

Technical Field

[0001] The utility model relates to the technical field of motor actuators, in particular to a motor-driven rotary actuator structure. Background Art

[0002] The patent number is: ZL202120654323.8, and the patent name is: A Chinese utility model patent for a permanent magnet stepper motor worm gear output mechanism, a permanent magnet stepper motor and an electronic device. It essentially discloses a motor actuator; specifically, the permanent magnet stepper motor worm gear output mechanism includes a permanent magnet stepper motor, a worm connected to the output end of the permanent magnet stepper motor at one end, a worm wheel meshing with the worm, and a bracket for fixing the permanent magnet stepper motor. The worm is rotatably connected to the bracket, and the worm wheel is rotatably connected to the bracket.

[0003] It should be pointed out that for the above-mentioned permanent magnet stepper motor worm gear output mechanism, its output mode is rotation, which can either engage with the next stage gear or simply output rotational power, but cannot achieve vertical swing output. Utility Model Content

[0004] The purpose of the utility model is to provide a motor-driven rotary actuator structure to address the deficiencies of the prior art. The motor-driven rotary actuator structure has a novel design and can effectively achieve vertical swing output.

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

[0006] A motor-driven rotary actuator structure includes a fixed bracket, a stepper motor, and a driving worm gear. The stepper motor is fastened to the fixed bracket. The rotor of the stepper motor is provided with a driving worm extending horizontally forward. The driving worm gear is meshed with the driving worm gear.

[0007] The fixed bracket is rotatably mounted above the driving worm and has a metal shaft extending horizontally in the left and right directions, and the metal shaft is perpendicular to the driving worm.

[0008] A plastic part is sheathed around the outer periphery of the metal shaft. The plastic part and the metal shaft are injection molded into an integral structure. The plastic part is provided with a driving swing arm extending radially outward along the metal shaft.

[0009] The driving worm gear is coaxially arranged with the metal rotating shaft, and the driving worm gear is sleeved and fastened to the metal rotating shaft or the plastic part.

[0010] The fixing bracket includes a bracket bottom plate arranged horizontally, a front support portion extending vertically upward is provided on the front edge of the bracket bottom plate, and a rear support portion extending vertically upward is provided on the rear edge of the bracket bottom plate, and the front support portion and the rear support portion are arranged opposite each other;

[0011] The shell of the stepping motor is welded and mounted on the rear support portion, and the front end portion of the driving worm is rotatably connected to the front support portion through a front shaft sleeve.

[0012] The left edge of the bracket bottom plate is provided with a left support portion extending vertically upward, and the right edge of the bracket bottom plate is provided with a right support portion extending vertically upward, and the left support portion and the right support portion are arranged opposite to each other;

[0013] The left end portion of the metal rotating shaft is rotatably connected to the left supporting portion through a left shaft sleeve, and the right end portion of the metal rotating shaft is rotatably connected to the right supporting portion through a right shaft sleeve.

[0014] Wherein, the front shaft sleeve, the left shaft sleeve, and the right shaft sleeve are respectively stainless steel shaft sleeves.

[0015] Wherein, the front support portion, the rear support portion, the left support portion, the right support portion, and the bracket bottom plate are an integrated structure.

[0016] Wherein, the fixing bracket is equipped with a positioning column, and the plastic part is provided with a positioning stop portion corresponding to the positioning column, and the positioning stop portion and the plastic part are an integrated structure.

[0017] Wherein, an annular groove is formed on the outer circumferential surface of the metal shaft, and the plastic part covers the annular groove of the metal shaft.

[0018] Compared to the prior art, the present invention has the following beneficial effects. Specifically, during operation, the stepper motor operates and its rotor drives the drive worm to rotate synchronously. Because the drive worm and the drive worm wheel are meshed, the stepper motor's rotor drives the metal shaft to rotate via the worm gear mechanism. The rotating metal shaft drives the plastic part to rotate synchronously, thereby causing the drive swing arm of the plastic part to swing vertically, thereby achieving vertical swing output. Therefore, through the above-mentioned structural design, the motor-driven rotary actuator structure of the present invention can effectively achieve vertical swing output and has the advantage of a novel structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 This is a structural diagram of the utility model from another perspective.

[0022] Figure 3 It is a structural schematic diagram of the metal rotating shaft of the present utility model.

[0023] exist Figures 1 to 3 These include:

[0024] 1-Fixed bracket; 11-Bracket base; 12-Front support; 13-Rear support; 14-Left support; 15-Right support; 2-Stepper motor; 3-Drive worm gear; 4-Drive worm; 5-Metal shaft; 51-Annular groove; 6-Plastic part; 61-Drive swing arm; 62-Location stop; 71-Front bushing; 72-Left bushing; 73-Right bushing; 8-Location column. DETAILED DESCRIPTION

[0025] The present invention will be described below in conjunction with specific implementation methods.

[0026] Example 1, as Figure 1 and Figure 2 As shown, a motor-driven rotary actuator structure includes a fixed bracket 1, a stepper motor 2, and a driving worm gear 3. The stepper motor 2 is fastened to the fixed bracket 1. The rotor of the stepper motor 2 is provided with a driving worm 4 extending horizontally forward, and the driving worm 4 is engaged with the driving worm gear 3.

[0027] Further, such as Figure 1 and Figure 2 As shown, the fixed bracket 1 is rotatably mounted above the driving worm 4 with a metal shaft 5 extending horizontally in the left-right direction, and the metal shaft 5 is perpendicular to the driving worm 4 .

[0028] Furthermore, if Figure 1 and Figure 2 As shown, a plastic part 6 is sheathed on the periphery of the metal shaft 5 , and the plastic part 6 and the metal shaft 5 are injection-molded into an integral structure. The plastic part 6 is provided with a driving swing arm 61 extending radially outward from the metal shaft 5 .

[0029] It needs to be explained that if Figure 1 and Figure 2 As shown, the driving worm gear 3 is coaxially arranged with the metal shaft 5 , and the driving worm gear 3 is sleeved and fastened to the metal shaft 5 or the plastic part 6 .

[0030] During the operation of the motor-driven rotary actuator structure of the first embodiment, the stepper motor 2 is in operation and the rotor of the stepper motor 2 drives the driving worm 4 to rotate synchronously. Since the driving worm 4 is engaged with the driving worm wheel 3, the rotor of the stepper motor 2 drives the metal shaft 5 to rotate through the above-mentioned worm gear mechanism. The rotating metal shaft 5 drives the plastic part 6 to rotate synchronously, thereby causing the driving swing arm 61 of the plastic part 6 to swing vertically, thereby realizing vertical swing output.

[0031] In summary, it can be seen that, through the above structural design, the motor-driven rotary actuator structure of the first embodiment can effectively achieve vertical swing output and has the advantage of novel structural design.

[0032] Example 2, as Figure 1 and Figure 2 As shown, the difference between this embodiment 2 and embodiment 1 is that the fixed bracket 1 includes a bracket base plate 11 arranged horizontally and laterally, the front edge of the bracket base plate 11 is provided with a front support portion 12 extending vertically upward, and the rear edge of the bracket base plate 11 is provided with a rear support portion 13 extending vertically upward, and the front support portion 12 and the rear support portion 13 are arranged opposite to each other.

[0033] The housing of the stepping motor 2 is welded and mounted on the rear support portion 13 , and the front end portion of the driving worm 4 is rotatably connected to the front support portion 12 via a front bushing 71 .

[0034] Example 3, as Figure 1 and Figure 2 As shown, the difference between the third embodiment and the second embodiment is that the left edge portion of the bracket base plate 11 is provided with a left support portion 14 extending vertically upward, and the right edge portion of the bracket base plate 11 is provided with a right support portion 15 extending vertically upward, and the left support portion 14 and the right support portion 15 are arranged opposite to each other.

[0035] The left end of the metal shaft 5 is rotatably connected to the left support portion 14 via the left shaft sleeve 72 , and the right end of the metal shaft 5 is rotatably connected to the right support portion 15 via the right shaft sleeve 73 .

[0036] It should be noted that the front sleeve 71, the left sleeve 72, and the right sleeve 73 are stainless steel sleeves respectively; of course, the above-mentioned stainless steel material does not constitute a limitation to the third embodiment, that is, the sleeves of the third embodiment can also be made of other materials.

[0037] It should be explained that the various supporting parts of the present embodiment three can adopt an integrated structural design, specifically: the front support part 12, the rear support part 13, the left support part 14, the right support part 15, and the bracket base plate 11 are an integrated structure; of course, the various supporting parts of the present embodiment three can also adopt a split structural design, specifically: the front support part 12, the rear support part 13, the left support part 14, and the right support part 15 are respectively components independent of the bracket base plate 11, and the front support part 12, the rear support part 13, the left support part 14, and the right support part 15 can be respectively installed on the bracket base plate 11 by screwing.

[0038] Example 4, as Figure 1 and Figure 2As shown, the difference between the fourth embodiment and the first embodiment is that the fixing bracket 1 is equipped with a positioning column 8, and the plastic component 6 is provided with a positioning stop 62 corresponding to the positioning column 8, and the positioning stop 62 and the plastic component 6 are an integrated structure.

[0039] During the process of the metal shaft 5 rotating and driving the swing arm 61 to swing vertically, the fourth embodiment uses the positioning column 8 to block and limit the positioning stop 62 of the plastic part 6 so that the driving swing arm 61 can swing accurately to the desired position.

[0040] Example 5, as Figure 3 As shown, the difference between the fifth embodiment and the first embodiment is that an annular groove 51 is formed on the outer circumferential surface of the metal shaft 5 , and the plastic component 6 covers the annular groove 51 of the metal shaft 5 .

[0041] During the injection molding process of the plastic part 6 , part of the plastic part 6 is filled into the annular groove 51 of the metal shaft 5 . By providing the annular groove 51 on the outer circumferential surface of the metal shaft 5 , the fifth embodiment can effectively improve the stability of the combination of the plastic part 6 and the metal shaft 5 .

[0042] 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 may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A motor-driven rotary actuator structure, comprising a fixed bracket (1), a stepping motor (2), and a driving worm gear (3), wherein the stepping motor (2) is fixedly mounted on the fixed bracket (1), and the rotor of the stepping motor (2) is provided with a driving worm (4) extending horizontally forward, and the driving worm (4) is meshed with the driving worm gear (3); Its characteristics are: A metal shaft (5) extending horizontally in the left-right direction is rotatably mounted on the fixed bracket (1) above the driving worm (4), and the metal shaft (5) is perpendicular to the driving worm (4); A plastic part (6) is sheathed around the metal rotating shaft (5), and the plastic part (6) and the metal rotating shaft (5) are injection-molded into an integral structure. The plastic part (6) is provided with a driving swing arm (61) extending radially outwardly along the metal rotating shaft (5); The driving worm gear (3) is coaxially arranged with the metal rotating shaft (5), and the driving worm gear (3) is sleeved and fastened to the metal rotating shaft (5) or the plastic part (6).

2. The motor-driven rotary actuator structure according to claim 1, characterized in that: The fixed bracket (1) includes a bracket base plate (11) arranged horizontally and transversely, a front side support portion (12) extending vertically upward is provided on the front side edge portion of the bracket base plate (11), and a rear side support portion (13) extending vertically upward is provided on the rear side edge portion of the bracket base plate (11), and the front side support portion (12) and the rear side support portion (13) are arranged opposite to each other; The housing of the stepper motor (2) is welded and mounted on the rear support portion (13), and the front end portion of the driving worm (4) is rotationally connected to the front support portion (12) via a front shaft sleeve (71).

3. The motor-driven rotary actuator structure according to claim 2, characterized in that: The left edge of the bracket bottom plate (11) is provided with a left support portion (14) extending vertically upward, and the right edge of the bracket bottom plate (11) is provided with a right support portion (15) extending vertically upward, and the left support portion (14) and the right support portion (15) are arranged opposite each other; The left end of the metal rotating shaft (5) is rotatably connected to the left support portion (14) via a left shaft sleeve (72), and the right end of the metal rotating shaft (5) is rotatably connected to the right support portion (15) via a right shaft sleeve (73).

4. The motor-driven rotary actuator structure according to claim 3, characterized in that: The front shaft sleeve (71), the left shaft sleeve (72), and the right shaft sleeve (73) are respectively stainless steel shaft sleeves.

5. The motor-driven rotary actuator structure according to claim 3, characterized in that: The front support portion (12), the rear support portion (13), the left support portion (14), the right support portion (15), and the bracket base plate (11) are an integrated structure.

6. A motor-driven rotary actuator structure according to any one of claims 1 to 5, characterized in that: The fixed bracket (1) is provided with a positioning column (8), and the plastic part (6) is provided with a positioning stop (62) corresponding to the positioning column (8), and the positioning stop (62) and the plastic part (6) are an integrated structure.

7. The motor-driven rotary actuator structure according to any one of claims 1 to 5, characterized in that: An annular groove (51) is formed on the outer circumferential surface of the metal rotating shaft (5), and the plastic part (6) covers the annular groove (51) of the metal rotating shaft (5).

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