Swing mechanism, and electric cradle for children

Abstract

The present application relates to a swing mechanism and an electric cradle for children. The swing mechanism comprises: a bottom frame; a swing chair frame, which is arranged above the base frame; a coupling assembly, by means of which the front end of the swing chair frame is rotationally connected to the front end of the base frame; a driving assembly, by means of which the rear end of the swing chair frame is connected to the rear end of the base frame, the driving assembly being configured to output a rotational driving force to the swing chair frame to enable the swing chair frame to swing relative to the base frame; and a speed measurement assembly, which is mounted on the driving assembly and electrically connected to the driving assembly. The speed measurement assembly can measure in real time the rotation speed of the rotational driving force output by the driving assembly, and generate a speed signal on the basis of a user demand and feed back the speed signal to the driving assembly, so that the driving assembly performs speed adjustment and adjusts the swing frequency of the swing chair frame as required so as to achieve various swing effects, thus meetings the different needs of children for the swing speed at different times and ensures the capacity and effect of the electric cradle for children in regard to soothing children's emotions and promoting sleep.

Description

Swing mechanism and children's electric cradle Technical Field

[0001] The present application relates to the technical field of children's products, and in particular to a rocking mechanism and a children's electric cradle. Background Art

[0002] A child's cradle is a device that can replace the feeling of being held by a parent, rocking to soothe the child, and promoting sleep. It liberates parents and ensures a better life experience for both parents and children. Currently, the vast majority of child cradles on the market use the principle of a single swing pendulum to drive the cradle. However, under the principle of a single pendulum, the swing frequency is also fixed due to the constant length of the pendulum rod. This results in the swing frequency of the child cradle manufactured using the single pendulum principle being unable to be adjusted, resulting in a single swing effect. Users can only adjust the swing angle, resulting in the child cradle being unable to meet the different swing speed needs of children at different times, affecting the child cradle's ability to provide emotional soothing and sleep promotion for children. Summary of the Invention

[0003] Based on this, it is necessary to provide a rocking mechanism and a children's electric cradle to address the problem that the swinging effect is single and cannot meet different usage requirements.

[0004] In one aspect, the present application proposes a rocking mechanism comprising:

[0005] chassis;

[0006] a rocking chair frame, the rocking chair frame being arranged above the base frame;

[0007] a connecting assembly, through which the front end of the rocking chair frame is rotatably connected to the front end of the base frame;

[0008] a drive assembly, wherein the rear end of the rocking chair frame is connected to the rear end of the base frame via the drive assembly, and the drive assembly is used to output a rotational driving force to the rocking chair frame so that the rocking chair frame can rock relative to the base frame; and

[0009] A speed detection component is installed on the driving component and is electrically connected to the driving component. The speed detection component is used to detect the size of the rotational driving force output by the driving component so that the driving component can adjust its speed.

[0010] The rocking mechanism of the present invention is applied to a children's electric cradle. Since the front end of the rocking chair frame is rotatably connected to the front end of the base frame through a connecting assembly, and the rear end of the rocking chair frame is connected to the rear end of the base frame through a driving assembly, when the driving assembly outputs a rotational driving force to the rocking chair frame, the rocking chair frame can be driven to rock relative to the base frame with the connecting assembly as a rotation fulcrum. At this time, the child sitting or lying in the seat frame can be rocked in the arms, so as to achieve the effect of soothing the child or promoting sleep; at the same time, the speed detection assembly can detect the rotation speed of the rotational driving force output by the driving assembly in real time, and generate a speed signal according to the user's needs and feed it back to the driving assembly, so that the driving assembly can adjust the speed and the rocking frequency of the rocking chair frame can be adjusted as needed, thereby enriching the rocking effect and meeting the different needs of children for the swinging speed at different times, thereby ensuring the ability and effect of the children's electric cradle in solving the problems of soothing children's emotions and promoting sleep.

[0011] The technical solution of this application is further described below:

[0012] In one embodiment, the driving assembly includes a control circuit board, a driving seat, a driving unit and a swing arm, wherein the control circuit board and the driving unit are respectively disposed on the driving seat and electrically connected to each other, one end of the swing arm is drivingly connected to the driving unit, and the other end of the swing arm is drivingly connected to the rocking chair frame;

[0013] The speed detection component includes a grating and a sensor. The grating is connected to the drive unit and can rotate. The rotation speed of the grating is consistent with the rotation speed of the rotational driving force output by the drive unit. The sensor is arranged on the drive seat and cooperates with the grating. The sensor is electrically connected to the control circuit board.

[0014] In one embodiment, the driving unit includes a driving motor, a worm and a worm wheel, wherein the motor is drivingly connected to one end of the worm, the worm is meshed with the worm wheel, and the worm wheel is drivingly connected to the swing arm;

[0015] The grating is connected to the other end of the worm and can rotate synchronously with the worm in the same direction.

[0016] In one embodiment, the drive unit further includes two first bearings and two second bearings, the two first bearings are installed in the drive seat at intervals and opposite to each other, and the two first bearings are connected to the two ends of the worm wheel in a one-to-one correspondence, and the two second bearings are installed in the drive seat at intervals and opposite to each other, and the two second bearings are connected to the two ends of the worm gear in a one-to-one correspondence.

[0017] In one embodiment, the rocking mechanism further includes a rear support tube, one end of which is plugged into the connecting tube of the driving seat, and the other end of which is plugged into the leg tube of the base frame;

[0018] The rocking chair frame and the base frame are arranged obliquely, and the front end height of the rocking chair frame is smaller than the rear end height.

[0019] In one embodiment, the driving assembly further comprises a driving block, which is mounted at the rear end of the rocking chair frame. The driving block is provided with a connecting hole, and the swing arm is plugged and fixed in the connecting hole away from the swing axis of the driving unit.

[0020] In one embodiment, the connecting assembly includes a coupling and a coupling seat, the coupling seat is mounted on the front end of the base frame, and the front end of the rocking chair frame is rotatably connected to the coupling seat through the coupling.

[0021] In one embodiment, the coupling includes a horizontal rotation axis and a vertical rotation axis, a connecting block is installed at the front end of the rocking chair frame, the connecting block has a horizontal rotation axis hole, the horizontal rotation axis is rotatably inserted into the horizontal rotation axis hole, and the coupling seat has a vertical rotation axis hole, the vertical rotation axis is rotatably inserted into the vertical rotation axis hole.

[0022] In one embodiment, the rocking mechanism further comprises a support leg, the support leg being rotatably mounted on the rear end of the base frame, and the support leg having a supporting position and a retracted position, and the base frame having an arc-shaped portion;

[0023] When the supporting foot is in the supporting position, the arc-shaped portion and the end of the supporting foot away from the base frame are used to support the ground together; when the supporting foot is in the retracted position, the arc-shaped portion supports the ground alone and enables the rocking mechanism to rock back and forth relative to the ground.

[0024] On the other hand, the present application also proposes a children's electric cradle, which includes the rocking mechanism as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1 is an assembly structure diagram of a swing mechanism according to an embodiment of the present application.

[0028] FIG2 is an exploded structural diagram of the swing mechanism in FIG1 .

[0029] FIG3 is an exploded structural diagram of the drive assembly in FIG2 .

[0030] FIG4 is a side structural diagram of the rocking mechanism when the supporting legs are in the supporting position.

[0031] FIG5 is a test structure diagram of the rocking mechanism when the support legs are in the retracted position.

[0032] Description of reference numerals:

[0033] 100. Rocking mechanism; 10. Base frame; 11. Leg; 12. Arc-shaped portion; 20. Rocking chair frame; 21. Connecting block; 30. Connecting assembly; 31. Coupling; 311. Horizontal rotation axis; 312. Vertical rotation axis; 32. Coupling seat; 40. Drive assembly; 41. Control circuit board; 42. Drive seat; 421. Connecting pipe; 43. Swing arm; 44. Drive motor; 45. Worm; 46. Worm gear; 47. First bearing; 48. Second bearing; 49. Drive block; 50. Speed ​​detection assembly; 51. Grating; 52. Sensor; 60. Rear support tube; 70. Support foot. DETAILED DESCRIPTION

[0034] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0035] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0037] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0038] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0040] 1 , 2 , 4 and 5 , a rocking mechanism 100 according to an embodiment of the present application is shown, which includes a base frame 10 , a rocking chair frame 20 , a connecting assembly 30 , a driving assembly 40 and a speed detecting assembly 50 .

[0041] The base frame 10 is a support carrier for the entire rocking mechanism 100 and is used to carry the rocking chair frame 20 , the connecting assembly 30 , the driving assembly 40 and the speed detecting assembly 50 .

[0042] The rocking chair frame 20 is the component that performs the rocking motion in the rocking mechanism 100 . Usually, a supporting component, such as a mesh cloth, is installed inside the rocking chair frame 20 so that children can sit or lie in the rocking chair frame 20 .

[0043] In this embodiment, the base frame 10 and the rocking chair frame 20 are both annular components made of round tubes or square tubes by bending, welding or splicing, and have the advantages of simple structure, high strength, good support stability and low manufacturing cost.

[0044] During assembly, the rocking chair frame 20 is arranged above the base frame 10, the front end of the rocking chair frame 20 is rotatably connected to the front end of the base frame 10 through the connecting assembly 30, and the rear end of the rocking chair frame 20 is connected to the rear end of the base frame 10 through the driving assembly 40. The driving assembly 40 is used to output a rotational driving force to the rocking chair frame 20 so that the rocking chair frame 20 can rock relative to the base frame 10; the speed detection assembly 50 is installed on the driving assembly 40 and is electrically connected to the driving assembly 40. The speed detection assembly 50 is used to detect the magnitude of the rotational driving force output by the driving assembly 40 so that the driving assembly 40 can adjust the speed.

[0045] In summary, the implementation of the technical solution of this embodiment will have the following beneficial effects: the rocking mechanism 100 of this solution is applied to a children's electric cradle. Since the front end of the rocking chair frame 20 is rotatably connected to the front end of the base frame 10 through the connecting assembly 30, and the rear end of the rocking chair frame 20 is connected to the rear end of the base frame 10 through the driving assembly 40, when the driving assembly 40 outputs a rotational driving force to the rocking chair frame 20, the rocking chair frame 20 can be driven to rock relative to the base frame 10 with the connecting assembly 30 as the rotation fulcrum. At this time, the rocking chair frame 20 can be rocked to the child sitting or lying in the seat frame, so as to achieve the effect of soothing the child or promoting sleep. At the same time, the speed detection assembly 50 can detect the rotation speed of the rotational driving force output by the driving assembly 40 in real time, and generate a speed signal according to the user's needs and feedback it to the driving assembly 40, so that the driving assembly 40 can adjust the speed and adjust the rocking frequency of the rocking chair frame 20 as needed, thereby enriching the rocking effect and meeting the different rocking speed requirements of children at different times, thereby ensuring the ability and effect of the children's electric cradle to solve the problem of emotional soothing and promoting sleep.

[0046] Please continue to refer to Figure 3. In some optional embodiments, the driving assembly 40 includes a control circuit board 41, a driving seat 42, a driving unit and a swing arm 43. The control circuit board 41 and the driving unit are respectively arranged on the driving seat 42 and are electrically connected to each other. One end of the swing arm 43 is connected to the driving unit, and the other end of the swing arm 43 is connected to the rocking chair frame 20.

[0047] In addition, the speed detection component 50 includes a grating 51 and a sensor 52. The grating 51 is connected to the drive unit and can rotate. The rotation speed of the grating 51 is consistent with the rotation speed of the rotational driving force output by the drive unit. The sensor 52 is arranged on the drive seat 42 and is cooperated with the grating 51. The sensor 52 is electrically connected to the control circuit board 41.

[0048] The control circuit board 41 is the control component of the swing mechanism 100, which can be configured with information input devices such as a panel, buttons, and a touch screen, and can accept user information or command input so that the swing mechanism 100 can operate according to the set swing angle and frequency based on user requirements.

[0049] During operation, the control circuit board 41 issues commands to the drive unit. The drive unit, in response to the commands, outputs a rotational driving force of a corresponding magnitude and speed, thereby driving the swing arm 43 to rotate. This causes the swing arm 43 to cause the rocker frame 20 to swing within space, with the coupling assembly 30 serving as the fulcrum. Furthermore, because the sensor 52 detects the rotational speed of the grating 51 in real time, and the rotational speed of the grating 51 is consistent with the rotational driving force output by the drive unit, the sensor 52 provides feedback to the control circuit board 41. The control circuit board 41 then adjusts the speed of the drive unit according to the user's desired use, thereby driving the rocker frame 20 to swing at variable speeds and amplitudes, meeting the varying swing speeds and angles desired by children at varying times.

[0050] Please continue to refer to Figure 3. Specifically, in the above embodiment, the driving unit includes a driving motor 44, a worm 45 and a worm wheel 46. The motor is drivingly connected to one end of the worm 45, the worm 45 is engaged with the worm wheel 46, and the worm wheel 46 is transmission-connected to the swing arm 43; the grating 51 is connected to the other end of the worm 45 and can rotate synchronously with the worm 45 in the same direction.

[0051] When the rocking mechanism 100 is in use, the drive motor 44 first drives the worm 45 to rotate along its own axis. The worm 45 then drives the worm wheel 46 to rotate, so that the worm wheel 46 can synchronously drive the swing arm 43 to rotate, thereby achieving the purpose of the swing arm 43 driving the rocking chair frame 20 to rock. The worm 45 and worm wheel 46 have a high load capacity and a stable transmission ratio, thereby ensuring that the rocking chair frame 20 can rock smoothly. In addition, the meshing of the worm 45 and worm wheel 46 has a self-locking property, which can prevent the rocking chair frame 20 from accidentally falling from a height and causing personal injury to children. The grating 51 is connected to the worm 45 and is located outside the drive seat 42, so that the grating 51 can rotate synchronously with the worm 45 in the same direction, so that the rotation speed of the grating 51 can accurately represent the rotation speed of the rotational driving force output by the drive unit, so that the rotation speed of the grating 51 detected by the sensor 52 is consistent with the rotation speed of the rocking chair frame 20, ensuring that the speed of the rocking chair frame 20 is accurately adjusted.

[0052] Of course, it is necessary to point out that the above-mentioned worm 45 and worm wheel 46 can also be replaced by any one of the transmission mechanisms such as a gear pair, a rack and pinion pair, a synchronous pulley mechanism, a sprocket mechanism, etc., which are also within the protection scope of this application and will not be described in detail here.

[0053] Please continue to refer to Figure 3. Further, on the basis of the above embodiment, the drive unit also includes two first bearings 47 and two second bearings 48. The two first bearings 47 are installed in the drive seat 42 at intervals and relative to each other, and the two first bearings 47 are connected to the two ends of the worm wheel 46 in a one-to-one correspondence. The two second bearings 48 are installed in the drive seat 42 at intervals and relative to each other, and the two second bearings 48 are connected to the two ends of the worm 45 in a one-to-one correspondence.

[0054] Therefore, the two first bearings 47 can form a rotational support for the worm wheel 46, and the two second bearings 48 can form a rotational support for the worm 45, so that the worm wheel 46 and the worm 45 can rotate smoothly while avoiding friction and wear between the worm wheel 46, the worm 45 and the drive seat 42, thereby improving the service life of the components.

[0055] Please continue to refer to Figures 1 and 2. In addition, based on any of the above embodiments, the rocking mechanism 100 also includes a rear support tube 60, one end of the rear support tube 60 is plugged into the connecting tube 421 of the drive seat 42, and the other end of the rear support tube 60 is plugged into the leg tube 11 of the base frame 10; the rocking chair frame 20 is arranged obliquely with the base frame 10, and the front end height of the rocking chair frame 20 is less than the rear end height.

[0056] Therefore, by arranging the rear support tube 60, the base frame 10, the drive assembly 40, and the rocking frame 20 are connected as a whole, making the rocking mechanism 100 more stable and compact. After the components are assembled, the length of the rear support tube 60 is greater than the height of the coupling assembly 30. Therefore, the front end of the rocking frame 20 is shorter than the rear end, forming a front-lower-back-higher structure with the base frame 10. This makes it easier for children or parents to place and remove children from the rocking frame 20, thereby improving the convenience of use of the electric cradle for children.

[0057] In yet other optional embodiments, the drive assembly 40 further includes a drive block 49 mounted at the rear end of the rocking frame 20. The drive block 49 defines a connection hole into which the swing arm 43, remote from the swing axis of the drive unit, is inserted and secured. Thus, the rocking frame 20 can be conveniently connected and secured to the swing arm 43 via the drive block 49, allowing the swing arm 43 to smoothly transmit the rotational drive force to the rocking frame 20, thereby causing the rocking frame 20 to rock at a set speed.

[0058] Optionally, the swing shaft and the connecting hole can be assembled and fixed by any one of interference fit, keyway connection, etc.

[0059] In the present application, the swing arm 43 specifically includes a rectangular mounting block and a swing shaft. An assembly hole is opened at one end of the rectangular mounting block in the length direction, and the swing shaft is connected to the other end of the rectangular mounting block in the length direction. The assembly hole is used for inserting and fixing one end of the worm gear 46, so that when the worm gear 46 drives the swing arm 43 to rotate, the rocking chair frame 20 can be driven to swing with the distance between the center of the assembly hole of the swing arm 43 and the center of the swing shaft as the rotation radius.

[0060] Continuing to refer to Figures 1 and 2, in some optional embodiments, the coupling assembly 30 includes a coupling 31 and a coupling seat 32. The coupling seat 32 is mounted on the front end of the base frame 10, and the front end of the rocking chair frame 20 is rotatably connected to the coupling seat 32 via the coupling 31. The coupling 31 and the coupling seat 32 are rotatably connected, thereby providing the rocking chair frame 20 with rotational freedom relative to the base frame 10.

[0061] Specifically, in the above embodiment, the coupling 31 includes a horizontal rotation axis 311 and a vertical rotation axis 312. The front end of the rocking chair frame 20 is equipped with a connecting block 21, which has a hole for the horizontal rotation axis 311, into which the horizontal rotation axis 311 is rotatably inserted. The coupling seat 32 has a hole for the vertical rotation axis 312, into which the vertical rotation axis 312 is rotatably inserted. In this way, when the drive assembly 40 drives the rear end of the rocking chair frame 20 to rotate, the rocking chair frame 20 can rock simultaneously in the horizontal direction (i.e., left and right) and the vertical direction (i.e., up and down) about the axis of the horizontal rotation axis 311 and the axis of the vertical rotation axis 312, thereby achieving a rocking effect that is more similar to the rocking in a parent's arms, thereby enhancing the soothing and sleep-promoting effects of the electric cradle for children.

[0062] Please continue to refer to Figures 4 and 5. In some optional embodiments, the rocking mechanism 100 also includes a supporting leg 70, which is rotatably mounted on the rear end of the base frame 10, and the supporting leg 70 has a supporting position and a retracted position, and the base frame 10 has an arc-shaped portion 12.

[0063] Furthermore, when the support leg 70 is in the supporting position, the arcuate portion 12 and the end of the support leg 70 away from the base frame 10 are used together to support the ground; when the support leg 70 is in the retracted position, the arcuate portion 12 supports the ground alone and enables the rocking mechanism 100 to rock back and forth relative to the ground.

[0064] Therefore, when the supporting legs 70 and the arc-shaped portion 12 support the ground at the same time, the rocking mechanism 100 can be stably placed on the ground, and at this time only the rocking chair frame 20 rocks; when the supporting legs 70 are rotated and retracted, only the arc-shaped portion 12 contacts the ground. With the help of the rocking potential energy of the rocking chair frame 20 in the horizontal direction and the specific arc-shaped structure of the arc-shaped portion 12, the entire rocking mechanism 100 can be rocked back and forth as a whole along the arc-shaped trajectory of the arc-shaped portion 12 on the ground, thereby achieving the purpose of further enriching the rocking effect of the children's electric cradle.

[0065] In addition to the above, the present application also proposes a children's electric cradle, which includes the rocking mechanism 100 as described in any of the above embodiments.

[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A swing mechanism, characterized in that: include: chassis; A rocking chair frame, the rocking chair frame is arranged above the base frame; A connecting assembly, through which the front end of the rocking chair frame is rotatably connected to the front end of the base frame; A driving assembly, wherein the rear end of the rocking chair frame is connected to the rear end of the base frame through the driving assembly, and the driving assembly is used to output a rotational driving force to the rocking chair frame so that the rocking chair frame can rock relative to the base frame; as well as, A speed detection component is installed on the driving component and is electrically connected to the driving component. The speed detection component is used to detect the size of the rotational driving force output by the driving component so that the driving component can adjust the speed.

2. The swing mechanism according to claim 1, characterized in that: The driving assembly includes a control circuit board, a driving seat, a driving unit and a swing arm, wherein the control circuit board and the driving unit are respectively arranged on the driving seat and are electrically connected to each other, one end of the swing arm is drivingly connected to the driving unit, and the other end of the swing arm is drivingly connected to the rocking chair frame; The speed detection component includes a grating and a sensor. The grating is connected to the driving unit and can rotate. The rotation speed of the grating is consistent with the rotation speed of the rotational driving force output by the driving unit. The sensor is arranged on the driving seat and cooperates with the grating. The sensor is electrically connected to the control circuit board.

3. The swing mechanism according to claim 2, characterized in that: The driving unit comprises a driving motor, a worm and a worm wheel, wherein the motor is drivingly connected to one end of the worm, the worm is meshingly matched with the worm wheel, and the worm wheel is drivingly connected to the swing arm; The grating is connected to the other end of the worm and can rotate synchronously with the worm in the same direction.

4. The swing mechanism according to claim 3, characterized in that: The drive unit also includes two first bearings and two second bearings. The two first bearings are installed in the drive seat with a spacing relative to each other, and the two first bearings are connected to the two ends of the worm wheel in a one-to-one correspondence. The two second bearings are installed in the drive seat with a spacing relative to each other, and the two second bearings are connected to the two ends of the worm in a one-to-one correspondence.

5. The swing mechanism according to claim 2, characterized in that: The swing mechanism further comprises a rear support tube, one end of which is plugged into the connecting tube of the driving seat, and the other end of which is plugged into the leg tube of the base frame; The rocking chair frame is arranged obliquely with the base frame, and the front end height of the rocking chair frame is smaller than the rear end height.

6. The swing mechanism according to claim 2, characterized in that: The driving assembly also includes a driving block, which is installed at the rear end of the rocking chair frame. The driving block is provided with a connecting hole, and the swing arm is plugged and fixed in the connecting hole away from the swing shaft of the driving unit.

7. The swing mechanism according to claim 1, characterized in that: The connecting assembly comprises a coupling and a coupling seat, wherein the coupling seat is mounted on the front end of the base frame, and the front end of the rocking chair frame is rotationally connected to the coupling seat through the coupling.

8. The swing mechanism according to claim 7, characterized in that: The coupling includes a horizontal rotating shaft and a vertical rotating shaft. A connecting block is installed at the front end of the rocking chair frame. The connecting block has a horizontal rotating shaft hole. The horizontal rotating shaft is rotatably inserted into the horizontal rotating shaft hole. The coupling seat has a vertical rotating shaft hole. The vertical rotating shaft is rotatably inserted into the vertical rotating shaft hole.

9. The swing mechanism according to claim 1, characterized in that: The swing mechanism further comprises a support foot, the support foot is rotatably mounted on the rear end of the base frame, and the support foot has a support position and a stowed position, and the base frame has an arc-shaped portion; When the supporting foot is in the supporting position, the arc-shaped portion and the end of the supporting foot away from the base frame are used together to support the ground; when the supporting foot is in the retracted position, the arc-shaped portion supports the ground alone and enables the rocking mechanism to rock back and forth relative to the ground.

10. A children's electric cradle, characterized in that: Comprising a rocking mechanism as claimed in any one of claims 1 to 9.

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