A curling iron drive structure

Abstract

The utility model relates to a curling iron drive structure, including motor, including with motor opposite fixed casing and with curling iron rotating part fixed connection's ring, the inner wall of casing and ring all are gear ring structure, first drive group includes with fixed setting in the motor output first central gear and a plurality of even surround first central gear circumferential first planetary gear, first planetary gear rotates and connects in first planet carrier, first planetary gear transmission rotation is behind, in gear ring structure engagement rolling. Adopt above -mentioned technical scheme, the utility model passes through coaxial planet and idler wheel compound transmission design, from the space level, first drive group and second drive group all adopt planetary gear train transmission, compact structure, planetary gear in central wheel circumferential distribution makes gear ring engagement dispersed load, and combines idler wheel synchronous engagement drive gear and ring gear, makes torque fluctuation rate reduce stability stronger.

Description

Technical Field

[0001] This utility model belongs to the field of hair curling device technology, and in particular relates to a hair curling iron driving structure. Background Technology

[0002] Currently, most automatic curling irons on the market use a motor-driven curling mechanism to achieve automatic hair winding. Their core drive solutions are mainly divided into two categories: one is a direct motor drive and electronic speed control solution: a micro DC motor directly drives the curling barrel, and the motor voltage / current is adjusted by PWM on the circuit board to achieve speed level switching; the other is a parallel shaft gear reduction solution: a single-stage or multi-stage parallel shaft gear set is used to reduce the motor speed and amplify the torque, and then combined with electronic speed control to achieve level control.

[0003] While the above solution can achieve basic hair curling functionality, it still has significant shortcomings in terms of space utilization efficiency, torque output stability, low-speed gear control precision, and noise and vibration suppression. Summary of the Invention

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a curling iron drive structure that solves the problems of insufficient space utilization efficiency, torque output stability, low-speed gear control accuracy and noise and vibration suppression of the existing curling iron drive structure.

[0005] The technical solution of this utility model is: a hair curling iron driving structure, including a motor, a housing fixed relative to the motor, and a ring fixedly connected to the rotating part of the hair curling iron. The inner walls of the housing and the ring are both toothed ring structures. The housing is equipped with a first transmission group and a first planetary carrier. The first transmission group includes a first central gear fixedly disposed at the output end of the motor and a plurality of first planetary gears uniformly surrounding the circumference of the first central gear. The first planetary gears are rotatably connected to the first planetary carrier. After the first planetary gears are driven to rotate by the first central gear, they mesh and roll in the gear ring structure. An additional final stage transmission assembly is provided inside the ring sleeve. The final stage transmission assembly includes a drive gear fixedly disposed at the center of the first planetary carrier and several idler gears evenly disposed around the drive gear and rotatably connected to the housing sleeve. The drive gear extends out of the housing sleeve and meshes with the idler gears. Each idler gear meshes with the drive gear and the gear ring structure of the ring sleeve respectively. The first planetary carrier coincides with the rotation shaft of the motor output end.

[0006] Furthermore, the first central gear meshes with each of the first planetary gears for transmission.

[0007] Furthermore, the first planetary gear and the first central gear are connected by a second transmission group. The second transmission group includes a second planetary carrier, a second central gear is fixedly mounted at the center of the second planetary carrier, the second central gear meshes with each of the first planetary gears in the circumferential direction, and a plurality of second planetary gears are rotatably mounted on the second planetary carrier. Each second planetary gear directly meshes with the first central gear and the gear ring structure of the housing. The second central gear, the second planetary carrier and the rotating shaft of the motor output end coincide.

[0008] Furthermore, fixed shafts are evenly distributed around the rotation axis of the motor output end on the end face of the housing near the ring sleeve, and an idler wheel is rotatably connected to each fixed shaft. The fixed shafts are fixedly set relative to the housing.

[0009] Furthermore, the first planetary gear is rotatably positioned on the side of the first planetary carrier near the motor output end.

[0010] Furthermore, the first planetary gear is rotatably disposed on the side of the first planetary carrier closer to the motor output end, the second central gear is disposed on the side of the second planetary carrier away from the motor output end, and the second planetary gear is disposed on the side of the second planetary carrier closer to the motor output end.

[0011] The beneficial effects of this utility model are as follows: The curling iron drive structure adopts a coaxial planetary and idler gear composite transmission design. From a spatial perspective, both the first and second transmission groups adopt planetary gear transmission, and both are nested in the housing along the same axis, resulting in a compact structure. The planetary gears are evenly distributed around the central gear, which allows the gear ring to mesh and distribute the load. Combined with the idler gear synchronously meshing with the drive gear and the ring gear, the torque fluctuation rate is reduced and the stability is enhanced. From a performance perspective, the planetary gear system drives the idler gear to rotate, achieving an ultra-high reduction ratio. This converts the high-speed rotation of the motor into the low-speed output of the ring gear, enabling high-precision control of the curling iron's rotation speed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model; Figure 2 This is a half-sectional structural diagram of a specific embodiment of the present utility model; Figure 3 This is a schematic diagram of the connection structure of the first planetary carrier in a specific embodiment of this utility model; Figure 4 This is a schematic diagram of the overall structure of the second transmission group in a specific embodiment of this utility model; Figure 5 This is a schematic diagram of the overall structure of the shell in a specific embodiment of this utility model.

[0013] In the diagram: 1. Motor; 2. Housing; 21. Fixed shaft; 3. Ring sleeve; 4. First transmission group; 41. First central gear; 42. First planetary gear; 5. First planetary carrier; 6. Final stage transmission group; 61. Drive gear; 62. Idler gear; 7. Second transmission group; 71. Second planetary carrier; 72. Second central gear; 73. Second planetary gear; 9. Gear ring structure. Detailed Implementation

[0014] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0016] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0017] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0018] like Figure 1-5 As shown, a hair curling iron driving structure includes a motor 1, a housing 2 fixed relative to the motor 1, and a ring 3 fixedly connected to the rotating part of the hair curling iron. The inner walls of the housing 2 and the ring 3 are both toothed ring structures 9. The housing 2 is equipped with a first transmission group 4 and a first planetary carrier 5. The first transmission group 4 includes a first central gear 41 fixedly disposed at the output end of the motor 1 and a plurality of first planetary gears 42 uniformly surrounding the first central gear 41. The first planetary gears 42 are rotatably connected to the first planetary carrier 5. After the first planetary gears 42 are driven to rotate by the first central gear 41, they mesh and roll in the gear ring structure 9. It should be noted that the first central gear 41 can directly mesh with each first planetary gear 42 for transmission, or a transmission assembly can be set therein to further increase the reduction ratio.

[0019] In this embodiment, the first planetary gear 42 and the first central gear 41 are transmitted through a second transmission group 7. The second transmission group 7 includes a second planetary carrier 71. A second central gear 72 is fixedly disposed at the center of the second planetary carrier 71. The second central gear 72 meshes with each of the first planetary gears 42 in the circumferential direction. A plurality of second planetary gears 73 are rotatably disposed on the second planetary carrier 71. Each second planetary gear 73 directly meshes with the first central gear 41 and the gear ring structure 9 of the housing 2. The second central gear 72, the second planetary carrier 71 and the rotating shaft of the output end of the motor 1 coincide.

[0020] To further explain, both the first planetary carrier 5 and the second planetary carrier 71 have downward protruding gear shafts on the side near the output end of the motor 1 for rotatably connecting the first planetary gear 42 or the second planetary gear 73, so that the second planetary gear 73 is on the same plane as the first central gear 41 and the two mesh.

[0021] It should be noted that the number of gear shafts is the same as the number of the corresponding first planetary gears 42 or second planetary gears 73. In this embodiment, three of each of the first planetary gears 42 and the second planetary gears 73 are used.

[0022] Similarly, the end of the second planetary carrier 71 that is away from the motor output end protrudes to fix the second central gear 72, so that the second central gear 72 and the first planetary gear 42 are on the same plane and can mesh with each other.

[0023] An additional final stage transmission group 6 is provided inside the ring sleeve 3. The final stage transmission group 6 includes a drive gear 61 fixedly disposed at the center of the first planetary carrier 5 and a plurality of idler gears 62 evenly disposed around the drive gear 61 and rotatably connected to the housing 2. The drive gear 61 extends out of the housing 2 and meshes with the idler gears 62. Each idler gear 62 meshes with the drive gear 61 and the gear ring structure 9 of the ring sleeve 3 respectively. The first planetary carrier 5 coincides with the rotation shaft of the output end of the motor 1.

[0024] Fixed shafts 21 are evenly distributed around the rotation shaft of the output end of the motor 1 on the end face of the housing 2 near the ring 3. Each fixed shaft 21 is rotatably connected to an idler wheel 62. The fixed shafts 21 are fixedly set relative to the housing 2.

[0025] Hair curling action: Motor 1 starts, and the output shaft of Motor 1 begins to rotate, driving the first central gear 41 fixed at its output end to rotate. The first central gear 41 drives the second planetary gear 73 meshing with it to rotate. The second planetary gear 73 simultaneously meshes with the gear ring structure 9 fixed on the inner wall of the housing 2. Since the gear ring 9 is fixed, the second planetary gear 73 will revolve around the first central gear 41, i.e., the output end of Motor 1, while rotating on its own axis. The revolving motion of the second planetary gear 73 drives its carrier - the second planetary carrier 71 to start revolving around the output end of Motor 1. The second central gear 72 fixed at the center of the second planetary carrier 71 revolves accordingly.

[0026] The second central gear 72 rotates with its meshing first planetary gear 42, that is, the first planetary gear 42 rotates on its own axis. At the same time, the first planetary gear 42 meshes with the gear ring structure 9 on the fixed inner wall of the housing 2. Also, because the gear ring 9 is fixed, the first planetary gear 42 will also revolve around the second central gear 72, that is, the output shaft of the motor 1, while rotating on its own axis. The revolve motion of the first planetary gear 42 drives its carrier - the first planetary carrier 5 to start revolving around the motor shaft. The rotational speed and direction of the first planetary carrier 5 are determined by the motor after passing through two stages of planetary gear reduction. The drive gear 61, fixed at the center of the first planetary carrier 5, revolves together with the first planetary carrier 5. The rotating drive gear 61 drives the idler gear 62, which meshes with it, to rotate. The idler gear 62 also meshes with the gear ring structure 9 on the inner wall of the ring sleeve 3.

[0027] The idler wheel 62 causes the drive gear 61 to rotate in the opposite direction to the ring 3, and the idler wheel assembly forms a simple reduction gear system, namely a drive gear-idler wheel-gear ring structure. The rotation of the drive gear 61 is transmitted to the ring 3 through the idler wheel 62. Its reduction ratio depends on the ratio of the number of teeth of the drive gear 61 and the gear ring 9 of the ring 3, thereby realizing the rotation of the ring 3. Finally, the rotating part of the curling iron is fixed to the ring 3, realizing the rotation.

[0028] Specifically, the curling iron drive structure in this embodiment adopts a coaxial planetary and idler gear composite transmission design. From a spatial perspective, both the first and second transmission groups use planetary gear transmissions, and both are nested in the housing along the same axis, resulting in a compact structure. The planetary gears are evenly distributed around the central gear, allowing the gear ring to mesh and distribute the load. Combined with the idler gear 62 synchronously meshing with the drive gear and the ring gear ring, the torque fluctuation rate is reduced and the stability is enhanced. From a performance perspective, the planetary gear transmission idler gear rotation achieves an ultra-high reduction ratio, converting the high-speed rotation of the motor 1 into the low-speed output of the ring 3, which can achieve high-precision control of the curling iron speed.

Claims

1. A curling iron driving structure, comprising a motor (1), characterized in that, It includes a housing (2) that is fixed relative to the motor (1) and a ring (3) that is fixedly connected to the rotating part of the curling iron. The inner walls of the housing (2) and the ring (3) are both toothed ring structures (9). The housing (2) is provided with a first transmission group (4) and a first planetary carrier (5). The first transmission group (4) includes a first central gear (41) fixedly disposed at the output end of the motor (1) and a number of first planetary gears (42) uniformly surrounding the first central gear (41) in the circumferential direction. The first planetary gears (42) are rotatably connected to the first planetary carrier (5). After the first planetary gears (42) are driven to rotate by the first central gear (41), they mesh and roll in the gear ring structure (9). The inner side of the ring sleeve (3) is provided with a final stage transmission group (6). The final stage transmission group (6) includes a drive gear (61) fixedly set at the center of the first planetary carrier (5) and a number of idler gears (62) evenly arranged around the drive gear (61) and rotatably connected to the housing (2). The drive gear (61) extends out of the housing (2) and meshes with the idler gears (62). Each idler gear (62) meshes with the drive gear (61) and the gear ring structure (9) of the ring sleeve (3). The first planetary carrier (5) coincides with the rotation shaft of the output end of the motor (1).

2. The curling iron driving structure according to claim 1, characterized in that, The first central gear (41) meshes with each of the first planetary gears (42) for transmission.

3. The curling iron driving structure according to claim 1, characterized in that, The first planetary gear (42) and the first central gear (41) are transmitted through a second transmission group (7). The second transmission group (7) includes a second planetary carrier (71). A second central gear (72) is fixedly arranged at the center of the second planetary carrier (71). The second central gear (72) meshes with each of the first planetary gears (42) in the circumferential direction. A plurality of second planetary gears (73) are rotatably arranged on the second planetary carrier (71). Each second planetary gear (73) directly meshes with the first central gear (41) and the gear ring structure (9) of the housing (2). The second central gear (72), the second planetary carrier (71) and the rotating shaft of the output end of the motor (1) coincide.

4. A curling iron driving structure according to claim 2 or 3, characterized in that, Fixed shafts (21) are evenly distributed around the rotating shaft of the output end of the motor (1) on the end face of the housing (2) near the ring (3). Each fixed shaft (21) is rotatably connected to an idler wheel (62). The fixed shafts (21) are fixedly set relative to the housing (2).

5. The curling iron driving structure according to claim 2, characterized in that, The first planetary gear (42) is rotatably mounted on the side of the first planetary carrier (5) near the output end of the motor (1).

6. The curling iron driving structure according to claim 3, characterized in that, The first planetary gear (42) is rotatably disposed on the side of the first planetary carrier (5) near the output end of the motor (1), the second central gear (72) is disposed on the side of the second planetary carrier (71) away from the output end of the motor (1), and the second planetary gear (73) is disposed on the side of the second planetary carrier (71) near the output end of the motor (1).

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