Rocking device for children

Abstract

The utility model discloses a children's rocking device which comprises a support frame, a seat body, a first electric driving mechanism and a second electric driving mechanism, the first electric driving mechanism comprises a first motor, a swing arm and a second rotating shaft, and the second electric driving mechanism comprises a connecting seat, a second motor, a second transmission assembly and a limiting part. One end of the swing arm is pivoted to the supporting frame, the other end of the swing arm is pivoted to the connecting base, the base body is pivoted to the connecting base, and the limiting part is used for controlling the rotating angle of the connecting base relative to the swing arm. And the seat body is subjected to combination of three changes of displacement, orientation angle and vertical included angle relative to the support frame. The rocking device for children is stable and simple in structure, various rocking modes can be selected, the motion trail of the seat body is more stereoscopic and richer during composite rocking, and more requirements of consumers can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of children's products, in particular to a children's rocking device. Background Art

[0002] At present, there are many kinds of children's rocking devices on the market, but most of them adopt the method of rocking in a fixed mode such as parallel movement, swinging, or rotating alone, and the mode is single. For example, Chinese patent CN218219722U discloses a children's rocking chair, which adopts a scheme in which a swing arm swings around a first rotating shaft, a seat body is fixedly installed on a second shaft, and the second shaft is pivotally connected to the swing arm, so that the second shaft can swing with the seat body along with the swing arm, but cannot rotate up and down, and the mode is single. The seat body limiting mechanism is also used to limit the angle between the seat body and the first rotating shaft to a set angle when the driving motor drives the first rotating shaft, so as to correct the direction of the seat body during the swinging process.

[0003] There are also some children's rocking devices that use multi-dimensional composite rocking with multiple actions. For example, Chinese patent CN220800614U discloses a rocking chair that can rock back and forth and up and down. The sliding seat can be installed on the base to move back and forth. The base is provided with a first driving mechanism, which is transmission-connected to the sliding seat and is used to drive it to move back and forth. The seat body is installed on the sliding seat through a second driving mechanism, and the second driving mechanism is used to drive the seat body to rock back and forth. It combines horizontal back and forth rocking + up and down rocking, so that the rocking chair has three rocking modes. However, there are the following problems: since the forward and backward swinging adopts the horizontal sliding mode, when the conventional slide rail matching mode is adopted to realize the horizontal sliding, the seat body and the sliding seat are prone to shaking, and the overall stability of the seat body and the sliding seat is poor. In order to solve the problem of poor stability and ensure smooth sliding, a more complex stabilizing structure must be added, which will increase the overall cost; the first driving mechanism can only drive the seat body to move without changing the direction, and the second driving mechanism can only drive the seat body to swing up and down. During the multi-dimensional composite swinging, the seat surface direction of the seat body cannot be changed. In fact, only two changes can be combined, and the motion trajectory is not rich enough, and children are easy to get bored. Utility Model Content

[0004] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a children's rocking device, which has stability, simple structure, can select a variety of rocking modes, and has a more three-dimensional and richer motion trajectory, which can meet more needs of consumers.

[0005] The utility model is realized by the following technical solutions:

[0006] A children's rocking device, comprising: a support frame, a seat body, a first electric drive mechanism, and a second electric drive mechanism. Among them, the first electric drive mechanism includes a first motor, a first transmission assembly, a swing arm, a first rotating shaft, and a second rotating shaft. The second electric drive mechanism includes a connecting seat, a second motor, and a second transmission assembly. One end of the swing arm is rotatably connected to the support frame through the first rotating shaft. The first transmission assembly is connected between the first motor and the swing arm. The other end of the swing arm is rotatably connected to the connecting seat through the second rotating shaft. The seat body is pivotally connected to the connecting seat. The second motor is installed on the connecting seat and connected to the second transmission assembly. The second transmission assembly is also connected to the seat body. When the first motor rotates, the second rotating shaft drives the connecting seat and the seat body to swing reciprocally relative to the support frame. The second motor is used to drive the seat body to rotate reciprocally up and down relative to the support frame;

[0007] It further includes a limiting part, which is arranged between the support frame and the second rotating shaft, or between the swing arm and the second rotating shaft, or between the support frame and the connecting seat, or between the swing arm and the connecting seat. The limiting part is used to control the rotation angle of the connecting seat relative to the swing arm, so that the connecting seat drives the seat body to generate a directional deflection relative to the support frame. When the first motor and the second motor are simultaneously driven and under the control of the limiting part, the seat body performs a compound swing, and the seat body undergoes a compound change of displacement, directional angle, and up-and-down angle relative to the support frame.

[0008] The children's rocking device provided by the present utility model can realize at least three rocking modes of the independent reciprocating swing of the seat body, the independent reciprocating rotation up and down, and the compound swing. The first electric drive mechanism adopts a method of combining a swing arm with a second rotating shaft to drive the connecting seat to realize the reciprocating swing of the connecting seat and the seat body. Its swing stability is good and the structure is simple. Since the seat body is pivotally connected to the connecting seat, the connecting seat can rotate relative to the swing arm, and the limiting part can control the rotation angle of the connecting seat relative to the swing arm, so that the connecting seat drives the seat body to generate a directional deflection relative to the support frame. Thus, when the first motor and the second motor are simultaneously driven and under the control of the limiting part, the seat body performs a compound swing, and different angles between the connecting seat and the support frame will cause the seat surface orientation of the seat body to be variable, that is, the orientation when the second motor drives the seat body to rotate reciprocally up and down is variable, so as to realize the compound change of displacement, directional angle, and up-and-down angle. The movement trajectory of the seat body is more three-dimensional and richer. Children are not easily bored and like it more, which can meet more needs of consumers.

[0009] Further, the connecting seat is provided with an installation groove penetrating up and down. The seat body is pivotally connected to the installation groove. The seat body is provided with an upper limit protrusion and a lower limit protrusion. The upper limit protrusion is used for abutting and cooperating with the upper end of the installation groove, and the lower limit protrusion is used for abutting and cooperating with the lower end of the installation groove, so as to limit the rotation angle range of the seat body relative to the connecting seat.

[0010] Further, it further includes a transition connecting member. One end of the transition connecting member is pivotally connected to the connecting seat, and the other end of the transition connecting member is pivotally connected to the second transmission assembly. A first set of teeth is provided on the transition connecting member, and a second set of teeth meshing with the first set of teeth is provided on the seat body. The center of the pitch circle of the first set of teeth coincides with the pivot point between the transition connecting member and the connecting seat, and the center of the pitch circle of the second set of teeth coincides with the pivot point between the seat body and the connecting seat. The second motor drives the transition connecting member to swing reciprocally through the second transmission assembly, so that the transition connecting member drives the seat body to rotate reciprocally up and down.

[0011] Further, the radius of the pitch circle of the first set of teeth is greater than the radius of the pitch circle of the second set of teeth.

[0012] Further, the distance between the two pivot points at both ends of the transition connecting member is greater than the distance between the center of the pitch circle of the first set of teeth and the center of the pitch circle of the second set of teeth.

[0013] Further, when the swing arm swings left and right, the direction of the up and down rotation of the seat body is forward or backward; or when the swing arm swings forward and backward, the direction of the up and down rotation of the seat body is left or right.

[0014] Further, the first set of teeth and the second set of teeth are located on the side of the pivot shaft between the seat body and the connecting seat that is far from the second rotating shaft. The other end of the transition connecting member extends towards the second rotating shaft. The second transmission assembly and the second motor are respectively located on two opposite sides of the transition connecting member.

[0015] Further, when the swing arm swings left and right, the direction of the up and down rotation of the seat body is left or right; or when the swing arm swings forward and backward, the direction of the up and down rotation of the seat body is forward or backward.

[0016] Further, the extending direction of the transition connecting member is arranged crosswise with the extending direction of the swing arm. The second transmission assembly and the second motor are arranged along the extending direction of the swing arm and are respectively located on two opposite sides of the transition connecting member.

[0017] Further, the second transmission assembly includes a second driven wheel, a second worm, a second worm gear, a second rotating member, and a second swinging member. A second driving wheel is fixedly connected to the output shaft of the second motor. The second worm is pivotally connected to the connecting seat. The second driven wheel is fixedly connected to the second worm. The second driving wheel and the second driven wheel are in transmission connection. The second worm gear is pivotally connected to the connecting seat and meshes with the second worm. One end of the second rotating member is fixedly connected to the axle of the second worm gear, and the other end of the second rotating member is pivotally connected to one end of the second swinging member. The other end of the second swinging member is used to drive the seat body.

[0018] Further, the first transmission assembly includes a first driven wheel, a first worm, a first worm gear, a first rotating member, and a first swinging member. A first driving wheel is fixedly connected to the output shaft of the first motor. The first worm is pivotally connected to the support frame. The first driven wheel is fixedly connected to the first worm. The first driving wheel and the first driven wheel are in transmission connection. The first worm gear is pivotally connected to the support frame and meshes with the first worm. One end of the first rotating member is fixedly connected to the axle of the first worm gear. The other end of the first rotating member is pivotally connected to one end of the first swinging member. The other end of the first swinging member is pivotally connected to the swing arm.

[0019] Further, the seat body includes a chair frame and a swing seat. The swing seat is pivotally connected to the connecting seat. The chair frame is pivotally connected to the swing seat. The pivot axis between the swing seat and the connecting seat and the pivot axis between the chair frame and the swing seat are arranged at an angle. The chair frame can rotate relative to the swing seat to change the seat surface orientation of the chair frame.

[0020] Further, the pivot axis between the swing seat and the connecting seat is perpendicular to the pivot axis between the chair frame and the swing seat.

[0021] Further, the pivot point between the seat body and the connecting seat is centrally arranged between the first rotating shaft and the second rotating shaft.

[0022] Further, the second rotating shaft is fixedly connected to the connecting seat. The second rotating shaft is pivotally connected to the other end of the swing arm. The limiting portion is arranged between the support frame and the second rotating shaft or between the swing arm and the second rotating shaft. The limiting portion can drive the second rotating shaft to rotate relative to the swing arm.

[0023] Further, the limiting portion includes a limiting member and a mating groove. The limiting member is fixedly connected to the second rotating shaft or the connecting seat. The mating groove is installed on the support frame. The limiting member cooperates with the mating groove. When the second rotating shaft directly or indirectly drives the limiting member to swing with the swing arm, the limiting member can move relative to the mating groove to control the rotation angle of the second rotating shaft relative to the swing arm.

[0024] Further, the limiting portion includes a fourth motor and a fourth transmission assembly. Both the fourth motor and the fourth transmission assembly are installed on the swing arm. The fourth transmission assembly is connected between the fourth motor and the second rotating shaft. The fourth motor drives the second rotating shaft to rotate relative to the swing arm through the fourth transmission assembly, so as to control the rotation angle of the second rotating shaft relative to the swing arm.

[0025] Further, the second rotating shaft is pivotally connected to the connecting seat. The second rotating shaft is fixedly connected to the other end of the swing arm. The limiting portion is arranged between the support frame and the connecting seat or between the swing arm and the connecting seat. The limiting portion can drive the connecting seat to rotate relative to the second rotating shaft.

[0026] Further, the limiting part includes a limiting member and a fitting groove. The limiting member is connected to the connecting seat, and the fitting groove is installed on the support frame. The limiting member cooperates with the fitting groove. When the connecting seat swings with the swing arm, the limiting member can move relative to the fitting groove to control the angle of rotation of the connecting seat relative to the second rotating shaft.

[0027] Further, the limiting part includes a fourth motor and a fourth transmission assembly. Both the fourth motor and the fourth transmission assembly are installed on the swing arm. The fourth transmission assembly is connected between the fourth motor and the connecting seat. The fourth motor drives the connecting seat to rotate relative to the second rotating shaft through the fourth transmission assembly, so as to control the angle of rotation of the connecting seat relative to the second rotating shaft.

[0028] Further, it further includes a mode conversion part. The mode conversion part is installed on the support frame. The mode conversion part is connected to the fitting groove. The fitting groove is movably connected to the support frame. The mode conversion part can drive the fitting groove to change its position.

[0029] Further, the first motor and the first transmission assembly are located on one side of the swing arm, and the mode conversion part is located on the other side of the swing arm.

[0030] Further, when the swing arm swings left and right, the upward and downward rotation direction of the seat body is forward or backward; or, when the swing arm swings forward and backward, the upward and downward rotation direction of the seat body is left or right.

[0031] Further, when the swing arm swings left and right, the upward and downward rotation direction of the seat body is left or right; or, when the swing arm swings forward and backward, the upward and downward rotation direction of the seat body is forward or backward

[0032] Further, the second transmission assembly includes a second driven wheel, a second worm, a second worm gear, a second rotating member, and a second swinging member. A second driving wheel is fixedly connected to the output shaft of the second motor. The second worm is pivotally connected to the connecting seat. The second driven wheel is fixedly connected to the second worm. The second driving wheel and the second driven wheel are in transmission connection. The second worm gear is pivotally connected to the connecting seat and meshes with the second worm. One end of the second rotating member is fixedly connected to the axle of the second worm gear. The other end of the second rotating member is pivotally connected to one end of the second swinging member. The other end of the second swinging member is pivotally connected to the seat body.

[0033] Further, the seat body includes a chair frame and a swing seat. The swing seat is pivotally connected to the connecting seat. The chair frame is connected to the swing seat. The other end of the second swinging member is pivotally connected to the swing seat. The pivot axis point between the second swinging member and the swing seat deviates from the pivot point between the swing seat and the connecting seat. Description of the Drawings

[0034] Figure 1 It is a schematic structural diagram of the children's rocking device of Embodiment 1.

[0035] Figure 2Schematic structural diagram of the children's rocking device of Embodiment 1 after removing the outer shell.

[0036] Figure 3 Schematic structural diagram of the children's rocking device of Embodiment 1 after removing the outer shell and with the limiting member located at the left position of the mating groove during compound rocking.

[0037] Figure 4 Schematic structural diagram of the children's rocking device of Embodiment 1 after removing the outer shell and with the limiting member located at the middle position of the mating groove during compound rocking.

[0038] Figure 5 Schematic structural diagram of the children's rocking device of Embodiment 1 after removing the outer shell and with the limiting member located at the right position of the mating groove during compound rocking.

[0039] Figure 6 Schematic structural diagram of the children's rocking device of Embodiment 1 after removing the outer shell and rotating the chair frame.

[0040] Figure 7 Schematic structural diagram of the connection of the first electric drive mechanism, the second electric drive mechanism, the mode conversion part and the swing seat of Embodiment 1.

[0041] Figure 8 For Figure 7 Partial exploded structural diagram.

[0042] Figure 9 Partial exploded structural diagram at the first electric drive mechanism of Embodiment 1.

[0043] Figure 10 Partial exploded structural diagram at the mode conversion part of Embodiment 1.

[0044] Figure 11 Schematic structural diagram of the children's rocking device of Embodiment 2 after removing the outer shell.

[0045] Figure 12 Schematic structural diagram of the children's rocking device of Embodiment 3 after removing the outer shell.

[0046] Figure 13 One of the sectional structural diagrams of the connection of the first electric drive mechanism, the second electric drive mechanism, the mode conversion part and the swing seat of Embodiment 3.

[0047] Figure 14 Another sectional structural diagram of the connection of the first electric drive mechanism, the second electric drive mechanism, the mode conversion part and the swing seat of Embodiment 3.

[0048] Figure 15 Schematic structural diagram of the children's rocking device of Embodiment 5 after removing the outer shell.

[0049] Figure 16 Schematic diagram of a partial exploded structure connecting the first electric drive mechanism, the second electric drive mechanism, the mode conversion unit and the swing seat in Embodiment 5.

[0050] Figure 17 Schematic diagram of the structure of the children's rocking device in Embodiment 6 after removing the outer shell.

[0051] Figure 18 Schematic diagram of a partial exploded structure connecting the first electric drive mechanism, the second electric drive mechanism, the mode conversion unit and the swing seat in Embodiment 6.

[0052] Among them, the meanings of the reference numerals are as follows:

[0053] 1, support frame; 2, seat body; 21, chair frame; 22, swing seat; 221, insertion shaft; 222, first annularly arranged teeth; 23, upper limit projection; 24, lower limit projection; 25, second gear; 3, first electric drive mechanism; 31, first motor; 311, first driving wheel; 312, first transmission belt; 32, swing arm; 321, mounting seat; 33, second rotating shaft; 34, limiting part; 341, limiting member; 342, mating groove; 343, fourth motor; 3431, fourth driving wheel; 3432, fourth transmission belt; 344, fourth transmission component; 3441, fourth driven wheel; 3442, fourth worm; 3443, fourth worm gear; 3444, fourth rotating member; 3445, fourth swinging member; 35, first rotating shaft; 36, first transmission component; 361, first driven wheel; 362, first worm; 363, first worm gear; 364, first rotating member; 365, first swinging member; 37, mode conversion unit; 371, third motor; 372, third driving wheel; 373, third driven wheel; 374, third worm; 375, third worm gear; 376, third rotating member; 377, third swinging member; 378, third transmission belt; 4, second electric drive mechanism; 41, connecting seat; 411, mounting groove; 42, second motor; 421, second driving wheel; 422, second transmission belt; 43, second transmission component; 431, second driven wheel; 432, second worm; 433, second worm gear; 434, second rotating member; 435, second swinging member; 44, transition connecting member; 441, first gear; 5, outer shell; 51, avoidance groove. Detailed implementation manners

[0054] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0055] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0057] Embodiment 1

[0058] Refer to Figures 1 to 10 , this embodiment discloses a children's rocking device, including a support frame 1, a seat body 2, a first electric drive mechanism 3, and a second electric drive mechanism 4. The first electric drive mechanism 3 is installed on the support frame 1, and the support frame 1 supports the first electric drive mechanism 3. The second electric drive mechanism 4 is installed on the first electric drive mechanism 3, and the first electric drive mechanism 3 supports the second electric drive mechanism 4. The seat body 2 is installed on the second electric drive mechanism 4, and the second electric drive mechanism 4 supports the seat body 2. Among them, the first electric drive mechanism 3 can be used to drive the second electric drive mechanism 4 to swing reciprocally relative to the support frame 1. The second electric drive mechanism 4 can swing together with the seat body 2. The second electric drive mechanism 4 can also drive the seat body 2 to rotate reciprocally up and down relative to the support frame 1. When the first electric drive mechanism 3 is independently started, it can drive the seat body 2 to perform a separate reciprocating swing, or when the second electric drive mechanism 4 is independently started, it can drive the seat body 2 to perform a separate reciprocating rotation up and down, or the first electric drive mechanism 3 and the second electric drive mechanism 4 can simultaneously drive the seat body 2 to perform a compound swing, so that the children's rocking device has at least three rocking modes.

[0059] Refer to Figures 1 to 8 , preferably, the first electric drive mechanism 3 includes a first motor 31, a first transmission assembly 36, a swing arm 32, and a first rotating shaft 35 (not marked in this embodiment, reference can be made to the attached Figure 13) The second rotating shaft 33 and the limiting part 34. The second electric driving mechanism 4 includes a connecting seat 41, a second motor 42, and a second transmission assembly 43. One end of the swing arm 32 is rotatably connected to the support frame 1 through a first rotating shaft 35 (wherein, when one end of the swing arm 32 is fixedly connected to the first rotating shaft 35, the first rotating shaft 35 is rotatable relative to the support frame 1; conversely, when the first rotating shaft 35 is fixedly connected to the support frame 1, the first rotating shaft 35 is rotatable relative to one end of the swing arm 32). The first transmission assembly 36 is connected between the first motor 31 and the swing arm 32 to realize the transmission connection between the first motor 31 and the swing arm 32. The second rotating shaft 33 is pivotally connected to the other end of the swing arm 32 and swings reciprocally with the swing arm 32. The connecting seat 41 is fixedly connected to the second rotating shaft 33, so that the connecting seat 41 can rotate relative to the swing arm 32 around the second rotating shaft 33. The seat body 2 is pivotally connected to the connecting seat 41. The second motor 42 is installed on the connecting seat 41 and connected to the second transmission assembly 43. The second transmission assembly 43 is also connected to the seat body 2 to realize the transmission connection between the second motor 42 and the seat body 2. When the first motor 31 rotates, the second rotating shaft 33 drives the connecting seat 41 and the seat body 2 to swing reciprocally relative to the support frame 1. The second motor 42 is used to drive the seat body 2 to rotate up and down reciprocally relative to the support frame 1. The limiting part 34 is arranged between the support frame 1 and the second rotating shaft 33. The limiting part 34 can drive the second rotating shaft 33 to rotate relative to the swing arm 32, so as to control the rotation angle of the second rotating shaft 33 relative to the swing arm 32, and thus control the rotation angle of the connecting seat 41 relative to the swing arm 32. In this way, the limiting part 34 is used to control the second rotating shaft 33 to rotate to the set angle, so as to achieve the control that when the first electric driving mechanism 3 drives the connecting seat 41 to drive the seat body 2 to swing together, the connecting seat 41 and the seat body 2 rotate to the set angle, that is, the connecting seat 41 drives the seat body 2 to generate a deflection relative to the support frame 1, and further controls the change of the seat surface orientation of the seat body 2. In this way, when the first motor 31 and the second motor 42 drive simultaneously and under the control of the limiting part 34, the seat body 2 performs a composite swing, and the seat body 2 undergoes a composite of three changes of displacement, orientation angle, and up and down included angle relative to the support frame 1.

[0060] In the above solution, when the first electric drive mechanism 3 is selected for independent drive, the first motor 31 drives the swing arm 32 to swing reciprocally around the pivot point between the swing arm 32 and the support frame 1 (i.e., around the first rotation axis 35). The second rotation axis 33 swings together with the swing arm 32. At the same time, the connecting seat 41 drives the seat body 2 to swing together with the second rotation axis 33, so as to realize the reciprocal swing of the seat body 2 relative to the support frame 1. In addition, since the limiting part 34 can control the angle of rotation of the second rotation axis 33 relative to the swing arm 32, it can control the deflection of the second rotation axis 33 relative to the support frame 1, and further control the change of the seat surface orientation of the seat body 2. When the second electric drive mechanism 4 is selected for independent drive, the connecting seat 41 will stop at a preset position (affected by the swing arm 32 and the control result of the limiting part 34 on the second rotation axis 33). The second motor 42 drives the seat body 2 to rotate reciprocally up and down around the pivot point between the seat body 2 and the connecting seat 41, so as to realize the reciprocal up and down rotation of the seat body 2 relative to the support frame 1. Refer to Figures 3 to 5 ( Figures 3 to 5 is a schematic diagram of a movement trajectory of the seat body 2 during compound swing. Of course, according to different rotational speed settings of each motor, the movement trajectory of the seat body 2 during compound swing can also be other styles). When the first electric drive mechanism 3 and the second electric drive mechanism 4 are selected for simultaneous drive (i.e., during compound swing), the seat body 2 will swing reciprocally and rotate reciprocally up and down relative to the support frame 1. And due to the control of the limiting part 34, the orientation of the seat body 2 during reciprocal up and down rotation is changing, that is, the pivot axis between the seat body 2 and the connecting seat 41 deflects when the connecting seat 41 swings together with the second rotation axis 33. Thus, since the swing arm 32 is combined with the second rotation axis 33 to realize the reciprocal swing of the connecting seat 41 and the seat body 2, its swing stability is good and the structure is simple. Since the seat body 2 is pivotally connected to the connecting seat 41, the connecting seat 41 is fixedly connected to the second rotation axis 33, the second rotation axis 33 is pivotally connected to the swing arm 32, and the limiting part 34 can control the angle of rotation of the second rotation axis 33 relative to the swing arm 32, and further control the angle of rotation of the connecting seat 41 relative to the swing arm 32, so that the connecting seat 41 drives the seat body 2 to deflect relative to the support frame 1. Thus, during compound swing, different angles between the connecting seat 41 and the support frame 1 will make the seat surface orientation of the seat body 2 changeable, that is, the orientation of the seat body 2 when the second motor 42 drives it to rotate reciprocally up and down is changeable, so as to realize the compound of three changes: displacement, orientation angle, and up and down angle. The movement trajectory of the seat body 2 is more three-dimensional and richer, children are not easily bored and like it more, and it can meet more needs of consumers.

[0061] In this embodiment, preferably, the limiting part 34 includes a limiting member 341 and a mating groove 342. The limiting member 341 is fixedly connected to the second rotating shaft 33 or the connecting seat 41. The mating groove 342 is installed on the support frame 1. The limiting member 341 cooperates with the mating groove 342, and the limiting member 341 can move relative to the mating groove 342. That is, the cooperation between the mating groove 342 and the limiting member 341 is used to control the amplitude of the relative rotation of the second rotating shaft 33 or the connecting seat 41 (since the connecting seat 41 is fixedly connected to the second rotating shaft 33 and the actions of the connecting seat 41 and the second rotating shaft 33 are the same, so the movement purposes achieved by fixedly connecting the limiting member 341 to the second rotating shaft 33 or the connecting seat 41 are the same) relative to the swing arm 32. When the second rotating shaft 33 swings along with the swing arm 32, the limiting member 341 also swings along with the second rotating shaft 33 and the limiting member 341 also moves relative to the mating groove 342. The mating groove 342 drives the limiting member 341, and the limiting member 341 drives the second rotating shaft 33 or the connecting seat 41 to rotate relative to the swing arm 32, thereby controlling the seat surface orientation of the seat body 2, which can also be understood as controlling the orientation of the pivot axis between the seat body 2 and the connecting seat 41. In this way, the limiting member 341 fixedly arranged on the second rotating shaft 33 cooperates with the mating groove 342 to control the second rotating shaft 33 to rotate to the set angle, so as to control the orientation when the second motor 42 drives the seat body 2 to reciprocate up and down during compound swinging.

[0062] It should be noted that the specific cooperation between the limiting member 341 and the mating groove 342 is known, so it will not be elaborated here, and the present utility model does not limit the specific structure between the limiting member 341 and the mating groove 342.

[0063] According to the above, the reciprocating swing trajectory of the seat body 2 relative to the support frame 1 driven by the first electric drive mechanism 3 is arc-shaped. Among them, the plane where the arc-shaped trajectory is located can be parallel to the horizontal plane, or the plane where the arc-shaped trajectory is located can form an angle with the horizontal plane.

[0064] As described above, whether the seat surface orientation of the seat body 2 changes during reciprocating oscillation is related to the magnitude of the rotation of the second rotating shaft 33 relative to the swing arm 32. When reciprocating, if the magnitude of the rotation of the second rotating shaft 33 relative to the swing arm 32 causes the second rotating shaft 33 to deflect relative to the support frame 1, the seat surface orientation of the seat body 2 will also change relative to the support frame 1. Thus, during compound oscillation, the orientation of the seat body 2 during the up-and-down reciprocating rotation driven by the second motor 42 can be changed, making the movement trajectory of the seat body 2 more three-dimensional; if the magnitude of the rotation of the second rotating shaft 33 relative to the swing arm 32 does not cause the second rotating shaft 33 to deflect relative to the support frame 1, the seat surface orientation of the seat body 2 will not change relative to the support frame 1 either. At this time, the cooperation between the limiting member 341 and the fitting groove 342 can play a corrective role. At this time, during compound oscillation, it will be a combination of the reciprocating oscillation and the up-and-down reciprocating rotation of the seat body 2, without involving a change in orientation. The magnitude of the rotation of the second rotating shaft 33 relative to the swing arm 32 is controlled by the cooperation between the fitting groove 342 and the limiting member 341, specifically affected by factors such as the shape of the fitting groove 342 and the orientation of the fitting groove 342, and various influencing parameters can be designed as needed.

[0065] In this embodiment, preferably, under the cooperation control of the fitting groove 342 and the limiting member 341, the magnitude of the rotation of the second rotating shaft 33 relative to the swing arm 32 causes the second rotating shaft 33 to deflect relative to the support frame 1. In other preferred embodiments, the cooperation between the fitting groove 342 and the limiting member 341 can be adjusted, so as to optionally control the magnitude of the rotation of the second rotating shaft 33 relative to the swing arm 32, causing the second rotating shaft 33 to deflect relative to the support frame 1, or causing the second rotating shaft 33 not to deflect relative to the support frame 1. It can be understood that when the magnitude of the deflection of the second rotating shaft 33 relative to the support frame 1 is large, the change in the seat surface orientation of the seat body during compound oscillation is more obvious, and vice versa, the change in the seat surface orientation of the seat body will be more subtle.

[0066] Refer to Figures 3 to 6 , in this embodiment, more preferably, it further includes a mode conversion part 37. The mode conversion part 37 is installed on the support frame 1 and is connected to the fitting groove 342. The fitting groove 342 is movably connected to the support frame 1. The mode conversion part 37 can drive the fitting groove 342 to change its position. Thus, the magnitude of the rotation of the second rotating shaft 33 relative to the swing arm 32 can be changed, so that the magnitude of the deflection of the second rotating shaft 33 relative to the support frame 1 changes, thereby increasing or decreasing the angular change range of the seat surface orientation of the seat body 2 to change the oscillation amplitude during compound oscillation.

[0067] It can be understood that, in combination with the mode conversion unit 37, after the position of the driving mating groove 342 is changed by driving the mode conversion unit 37, the amplitude of the relative rotation of the second rotating shaft 33 with respect to the swing arm 32 can also be changed. Furthermore, the second rotating shaft 33 can be prevented from deflecting relative to the support frame 1, so as to achieve the purpose of not changing the seat surface orientation of the seat body 2, and an additional rocking mode can be added.

[0068] Among them, the mode conversion unit 37 can be manual or electric. In this embodiment, the mode conversion unit 37 is preferably electric. In this way, the mode conversion unit 37 can not only change the seat surface orientation of the seat body 2, but also combine the driving effect of the mode conversion unit 37 into the composite rocking according to needs. For example, the mode conversion unit 37 and the first electric driving mechanism 3 drive the seat body 2 to act simultaneously, or the mode conversion unit 37 and the second electric driving mechanism 4 drive the seat body 2 to act simultaneously, or the mode conversion unit 37, the first electric driving mechanism 3 and the second electric driving mechanism 4 drive the seat body 2 to act simultaneously, thereby increasing the rocking mode of the children's rocking device.

[0069] It should be noted that, regardless of whether the mode conversion unit 37 is manual or electric, any specific structure known in the art can be adopted, and the present invention does not limit the specific structure of the mode conversion unit 37. Refer to Figure 10, for ease of understanding, a specific structure of the mode conversion unit 37 may be selected as follows: The mode conversion unit 37 includes a third motor 371, a third driving wheel 372, a third driven wheel 373, a third worm 374, a third worm gear 375, a third rotating member 376, a third swinging member 377, and a third transmission belt 378. The third motor 371 is installed on the support frame 1. The third driving wheel 372 is fixedly connected to the output shaft of the third motor 371. The third worm 374 is pivotally connected to the support frame 1. The third driven wheel 373 is fixedly connected to the third worm 374. The third driving wheel 372 and the third driven wheel 373 are preferably pulley wheels, and the diameter of the third driven wheel 373 is larger than that of the third driving wheel 372. The third transmission belt 378 is wound around the third driving wheel 372 and the third driven wheel 373. The third worm gear 375 is pivotally connected to the support frame 1 and meshes with the third worm 374. One end of the third rotating member 376 is fixedly connected to the axle of the third worm gear 375. The other end of the third rotating member 376 is pivotally connected to one end of the third swinging member 377. The other end of the third swinging member 377 is pivotally connected to the fitting groove 342. The fitting groove 342 is pivotally connected to the support frame 1. Among them, the pivotal connection point between the third rotating member 376 and the third swinging member 377 deviates from the axis of the third worm gear 375, and the pivotal connection point between the third swinging member 377 and the fitting groove 342 deviates from the pivotal connection point between the fitting groove 342 and the support frame 1. In this way, a high transmission ratio is achieved and self-locking can be realized by using the worm and worm gear, which can prevent the reaction force from being transmitted back to the third motor 371 and causing an impact on the third motor 371. Overall, the performance requirements for the third motor 371 are reduced, the service life of the third motor 371 is extended, and costs are saved. When the third motor 371 is started, the third motor 371 drives the third driving wheel 372 to rotate. The third driving wheel 372 drives the third driven wheel 373 to rotate through the third transmission belt 378. The third driven wheel 373 drives the third worm 374 to rotate. The third worm 374 drives the third worm gear 375 to rotate. The third worm gear 375 drives the third rotating member 376 to rotate. The third rotating member 376 drives the third swinging member 377 to swing. The third swinging member 377 drives the fitting groove 342 to swing, thereby changing the position of the fitting groove 342 and thus changing the orientation of the seat surface of the seat body 2. When the third motor 371 stops operating, the fitting groove 342 can be fixed at a preset position.

[0070] Refer to Figure 2 and Figure 9 , to make full use of the space, more preferably, the first motor 31 and the first transmission assembly 36 are located on one side of the swing arm 32, and the mode conversion unit 37 is located on the other side of the swing arm 32. In this way, the space on both sides of the swing arm 32 is fully utilized to arrange the first motor 31, the first transmission assembly 36, and the mode conversion unit 37, which is beneficial for weight distribution, saves height space, avoids interference, is beneficial for reducing the size of the outer shell 5, and is more tidy and beautiful.

[0071] Refer to Figure 9, a specific structure of the first transmission assembly 36 may be selected as follows: The first transmission assembly 36 includes a first driven wheel 361, a first worm 362, a first worm gear 363, a first rotating member 364, and a first swinging member 365. A first driving wheel 311 is fixedly connected to the output shaft of the first motor 31. The first worm 362 is pivotally connected to the support frame 1. The first driven wheel 361 is fixedly connected to the first worm 362. The first driving wheel 311 and the first driven wheel 361 are in transmission connection. Preferably, the first driving wheel 311 and the first driven wheel 361 are belt wheels. The diameter of the first driven wheel 361 is larger than the diameter of the first driving wheel 311. A first transmission belt 312 is wound around the first driving wheel 311 and the first driven wheel 361. The first worm gear 363 is pivotally connected to the support frame 1 and meshes with the first worm 362. One end of the first rotating member 364 is fixedly connected to the axle of the first worm gear 363. The other end of the first rotating member 364 is pivotally connected to one end of the first swinging member 365. The other end of the first swinging member 365 is pivotally connected to the swing arm 32. Among them, the pivot point of the first rotating member 364 and the first swinging member 365 deviates from the axis of the first worm gear 363, and the pivot point of the first swinging member 365 and the swing arm 32 deviates from the pivot point of the swing arm 32 and the support frame 1.

[0072] In the prior art, the swing arm 32 is driven by the forward and reverse rotation of the motor. The length of the swing arm 32 affects the swing speed of the seat body 2. The longer the swing arm 32 is, the slower the swing speed of the seat body 2 is, and the shorter the swing arm 32 is, the faster the swing speed of the seat body 2 is. Since the swing speed of the seat body 2 needs to be controlled slower, the swing arm 32 is generally made longer, resulting in a large overall volume. Thus, compared with the prior art, the first transmission assembly 36 of this embodiment can achieve a high transmission ratio and directly control the swing speed of the swing arm 32. The swing arm 32 can be designed shorter, which is more comfortable for children to swing on the seat body 2. Also, it is convenient for the pivot point of the seat body 2 and the connecting seat 41 to be close to the middle position of the swing arm 32, so that the seat body 2 can be centered above the outer shell 5, making the overall appearance of the outer shell 5 more beautiful. In addition, the worm and worm gear can be used to achieve self-locking, which can prevent the reaction force from being transmitted back to the first motor 31 and causing an impact on the first motor 31. Overall, it reduces the performance requirements for the first motor 31, extends the service life of the first motor 31, and saves costs. When the first motor 31 is started, the first motor 31 drives the first driving wheel 311 to rotate. The first driving wheel 311 drives the first driven wheel 361 to rotate through the first transmission belt 312. The first driven wheel 361 drives the first worm 362 to rotate. The first worm 362 drives the first worm wheel 363 to rotate. The first worm wheel 363 drives the first rotating member 364 to rotate. The first rotating member 364 drives the first swinging member 365 to swing. The first swinging member 365 drives the swing arm 32 to swing, thereby driving the connecting seat 41 and the seat body 2 to swing reciprocally relative to the support frame 1. When the first motor 31 stops operating, the connecting seat 41 can be fixed at a preset position, and the combination with the change in the seat surface orientation of the seat body 2 enables the seat surface of the seat body 2 to have multiple angles, further meeting more needs of consumers.

[0073] It should be noted that the first transmission assembly 36 can also adopt any known structure as long as it can achieve the function of driving the seat body 2 to swing reciprocally by the first motor 31. The specific structure of the first transmission assembly 36 is not limited herein.

[0074] Refer to Figures 6 to 8, the children's rocking device of this embodiment may also have another solution for changing the seating surface orientation of the seat body 2: The seat body 2 includes a chair frame 21 and a swing seat 22. The swing seat 22 is pivotally connected to the connecting seat 41, and the chair frame 21 is pivotally connected to the swing seat 22. The pivot axis between the swing seat 22 and the connecting seat 41 and the pivot axis between the chair frame 21 and the swing seat 22 are arranged at an angle. The chair frame 21 can rotate relative to the swing seat 22 to change the seating surface orientation of the chair frame 21. Preferably, the pivot axis between the swing seat 22 and the connecting seat 41 is perpendicular to the pivot axis between the chair frame 21 and the swing seat 22. In this way, the chair frame 21 can be rotated so that the orientation of the chair frame 21 is adjustable, and further the seating surface orientation of the seat body 2 is adjustable, thereby realizing more rocking modes. This solution can be used alternatively or in combination with the mode conversion unit 37.

[0075] Specifically, the swing seat 22 is provided with an insertion shaft 221 for rotational cooperation with the chair frame 21. The swing seat 22 is also provided with a first ring-shaped arranged tooth 222. The chair frame 21 is provided with a second ring-shaped arranged tooth. The second ring-shaped arranged tooth and the first ring-shaped arranged tooth 222 can cooperate to limit the rotation angle of the chair frame 21. The shape of the second ring-shaped arranged tooth can refer to the shape of the first ring-shaped arranged tooth 222. When a force is applied to rotate the chair frame 21, the first ring-shaped arranged tooth 222 pushes up the second ring-shaped arranged tooth until the tooth peaks and valleys between the first ring-shaped arranged tooth 222 and the second ring-shaped arranged tooth correspond again, and the chair frame 21 is limited at another rotation angle, so that the orientation of the chair frame 21 changes, and further the seating surface orientation of the seat body 2 changes.

[0076] It should be noted that other structures can also be adopted for the rotational cooperation method between the swing seat 22 and the chair frame 21, as long as the relative rotation adjustment function between the swing seat 22 and the chair frame 21 can be realized. The present invention will not list them one by one here.

[0077] Refer to Figure 7 and Figure 8, in order to improve the safety of the up-and-down reciprocating rotation of the seat body 2, in this embodiment, the connecting seat 41 is provided with an installation groove 411 penetrating up and down, and the seat body 2 is pivotally connected to the installation groove 411. The seat body 2 is provided with an upper limit protrusion 23 and a lower limit protrusion 24. When the seat body 2 includes a swing seat 22 and a chair frame 21, the upper limit protrusion 23 and the lower limit protrusion 24 are specifically arranged on the swing seat 22. The upper limit protrusion 23 is used for abutting and cooperating with the upper end of the installation groove 411, and the lower limit protrusion 24 is used for abutting and cooperating with the lower end of the installation groove 411, so as to limit the angular range of the rotation of the seat body 2 relative to the connecting seat 41, and further provide overload protection to prevent the seat body 2 from tipping over when some transmission parts in the second electric drive mechanism 4 are damaged, thus improving safety. Preferably, with the pivot axis between the seat body 2 and the connecting seat 41 as the orientation reference, both the upper limit protrusion 23 and the lower limit protrusion 24 are located on the side of the pivot axis close to the second rotation axis 33; with the vertical direction as the reference, the pivot axis between the seat body 2 and the connecting seat 41 is located between the upper limit protrusion 23 and the lower limit protrusion 24. In this way, when using the upper limit protrusion 23 and the lower limit protrusion 24 to provide overload protection, a more reasonable protection torque can be provided without increasing the height dimension of the connecting seat 41.

[0078] Refer to Figure 7 and Figure 8 , in order to make the movement more stable when the second electric drive mechanism 4 drives the seat body 2 to reciprocate up and down, in this embodiment, the second electric drive mechanism 4 further includes a transition connector 44. One end of the transition connector 44 is pivotally connected to the connecting seat 41. The transition connector 44 is provided with a first set of teeth 441, and the seat body 2 is provided with a second set of teeth 25 meshing with the first set of teeth 441. When the seat body 2 includes a swing seat 22 and a chair frame 21, the second set of teeth 25 is specifically arranged on the swing seat 22. The pitch circle center of the first set of teeth 441 coincides with the pivot point between the transition connector 44 and the connecting seat 41, and the pitch circle center of the second set of teeth 25 coincides with the pivot point between the seat body 2 and the connecting seat 41. The other end of the transition connector 44 is pivotally connected to the second transmission component 43, and the second motor 42 drives the transition connector 44 to swing reciprocally through the second transmission component 43, so that the transition connector 44 drives the seat body 2 to reciprocate up and down. By setting the transition connector 44 and realizing the force transmission between the transition connector 44 and the seat body 2 in a meshing manner, a larger driving torque can be formed, making the rotation of the seat body 2 more stable and meeting the load requirements of the seat body 2.

[0079] Specifically, there are two first gear teeth 441 on the transition connecting member 44, and one second gear tooth 25 on the seat body 2. Of course, the number of the first gear teeth 441 can also be other numbers such as three, four, etc., and the number of the second gear teeth 25 can also be other numbers such as two, three, etc. In this embodiment, the numbers of the first gear teeth 441 and the second gear teeth 25 are not limited herein. The purpose of using gear teeth mating instead of the whole gear mating is to reduce the occupied space.

[0080] In order to increase the transmission ratio so that the second motor 42 can achieve the effect of labor saving, in addition to using the second transmission assembly 43 with a high transmission ratio, the following solutions can also be adopted:

[0081] (1) The pitch circle radius of the first gear tooth 441 is greater than that of the second gear tooth 25;

[0082] (2) The distance between the two pivot points at both ends of the transition connecting member 44 is greater than the distance between the pitch circle centers of the first gear tooth 441 and the second gear tooth 25.

[0083] The above two transmission ratio solutions can be used alone or in combination.

[0084] In order to reduce the occupied moving space when the connecting seat 41 drives the seat body 2 to swing back and forth, preferably, the pivot point between the seat body 2 and the connecting seat 41 is centrally arranged between the first rotating shaft 35 and the second rotating shaft 33. In this way, when the seat body 2 is centrally arranged above the housing 5 (at this time, the avoidance groove 51 on the upper surface of the housing 5 for the seat body 2 to move is centrally arranged), the housing 5 can also be made smaller, so that the whole is more beautiful.

[0085] Refer to Figures 2 to 7 , in this embodiment, taking the swing of the swing arm 32 as the direction reference, when the swing arm 32 swings left and right, the upward and downward rotation direction of the seat body 2 is forward or backward; or, when the swing arm 32 swings forward and backward, the upward and downward rotation direction of the seat body 2 is left or right. That is to say, the basic upward and downward rotation direction of the seat body 2 is arranged at a large angle intersection with the swing direction of the swing arm 32 (preferably perpendicular or nearly perpendicular). Of course, due to the function of the limiting part 34, the upward and downward rotation direction of the seat body 2 changes within a certain range based on the basic direction.

[0086] In order to improve the space utilization rate of the connecting seat 41 as a whole, in this embodiment: preferably, with the pivot axis between the seat body 2 and the connecting seat 41 as the orientation reference, the first gear teeth 441 and the second gear teeth 25 are located on the side of the pivot axis away from the second rotating shaft 33, and the other end of the transition connecting member 44 extends towards the second rotating shaft 33; the second transmission assembly 43 and the second motor 42 are respectively located on two opposite sides of the transition connecting member 44. Combining the position arrangements of the upper limit protrusion 23 and the lower limit protrusion 24, while avoiding interference, the space utilization rate can be improved as much as possible, the overall structure is compact and small in size, which is beneficial to reducing the size of the outer shell 5 and making it more beautiful.

[0087] Refer to Figure 8 , in this embodiment, a specific structure of the second transmission assembly 43 can be selected as follows: the second transmission assembly 43 includes a second driven wheel 431, a second worm 432, a second worm gear 433, a second rotating member 434, and a second swinging member 435. A second driving wheel 421 is fixedly connected to the output shaft of the second motor 42. The second worm 432 is pivotally connected to the connecting seat 41. The second driven wheel 431 is fixedly connected to the second worm 432. The second driving wheel 421 and the second driven wheel 431 are in transmission connection. The second driving wheel 421 and the second driven wheel 431 are preferably belt wheels, and the diameter of the second driven wheel 431 is larger than that of the second driving wheel 421. A second transmission belt 422 is wound around the second driving wheel 421 and the second driven wheel 431. The second worm gear 433 is pivotally connected to the connecting seat 41 and meshes with the second worm 432. One end of the second rotating member 434 is fixedly connected to the axle of the second worm gear 433. The other end of the second rotating member 434 is pivotally connected to one end of the second swinging member 435. The other end of the second swinging member 435 is used to drive the seat body 2. Specifically, the other end of the second swinging member 435 is pivotally connected to the other end of the transition connecting member 44. In this way, a high transmission ratio is achieved and self-locking can be realized by using the worm and worm gear, which can prevent the reaction force from being transmitted back to the second motor 42 and causing an impact on the second motor 42, reducing the performance requirements for the second motor 42 as a whole, extending the service life of the second motor 42, and saving costs; when the second motor 42 is started, the second motor 42 drives the second driving wheel 421 to rotate. The second driving wheel 421 drives the second driven wheel 431 to rotate through the second transmission belt 422. The second driven wheel 431 drives the second worm 432 to rotate. The second worm 432 drives the second worm gear 433 to rotate. The second worm gear 433 drives the second rotating member 434 to rotate. The second rotating member 434 drives the second swinging member 435 to swing. The second swinging member 435 drives the transition connecting member 44 to swing, thereby driving the seat body 2 to swing relative to the connecting seat 41, and further enabling the seat body 2 to rotate up and down reciprocally relative to the support frame 1; when the second motor 42 stops operating, the seat body 2 can be fixed at a preset rotation angle position.

[0088] Thus, when all the motors are not started as a whole, the seat body 2 can be self-locked in a preset state, and the seat body 2 will not shake.

[0089] It should be noted that the second transmission component 43 can also adopt any known structure, as long as it can realize the function of driving the seat body 2 to rotate up and down reciprocally by the second motor 42. The specific structure of the second transmission component 43 is not limited herein.

[0090] To sum up, the utility model realizes a children's rocking device with good stability, simple structure, and more three-dimensional and rich movement trajectories. Multiple rocking modes can be selected, which can meet more needs of consumers.

[0091] Embodiment 2

[0092] Refer to Figure 11 , this embodiment also discloses a children's rocking device. The difference between the children's rocking device of this embodiment and that of Embodiment 1 lies in: the different limiting parts 34.

[0093] In this embodiment, the same as Embodiment 1, the second rotating shaft 33 is fixedly connected to the connecting seat 41, and the second rotating shaft 33 is pivotally connected to the other end of the swing arm 32. Different from that, the limiting part 34 is specifically arranged between the swing arm 32 and the second rotating shaft 33. The limiting part 34 can also drive the second rotating shaft 33 to rotate relative to the swing arm 32, so as to control the rotation angle of the connecting seat 41 relative to the swing arm 32, and thus control the change of the seat surface orientation of the seat body 2.

[0094] Specifically, the limiting part 34 includes a fourth motor 343 and a fourth transmission component 344. The fourth motor 343 and the fourth transmission component 344 are both installed on the swing arm 32. The fourth transmission component 344 is connected between the fourth motor 343 and the second rotating shaft 33. The fourth motor 343 drives the second rotating shaft 33 to rotate relative to the swing arm 32 through the fourth transmission component 344, so as to control the rotation angle of the seat body 2 relative to the swing arm 32.

[0095] Refer to Figure 11, in this embodiment, a specific structure of the fourth transmission assembly 344 may be selected as follows: The fourth transmission assembly 344 includes a fourth driven wheel 3441, a fourth worm 3442, a fourth worm gear 3443, a fourth rotating member 3444, and a fourth swinging member 3445. A fourth driving wheel 3431 is fixedly connected to the output shaft of the fourth motor 343. A mounting seat 321 is fixedly connected to the swing arm 32. The fourth motor 343 is mounted on the mounting seat 321. The fourth worm 3442 is pivotally connected to the mounting seat 321. The fourth driven wheel 3441 is fixedly connected to the fourth worm 3442. The fourth driving wheel 3431 and the fourth driven wheel 3441 are in transmission connection. The fourth driving wheel 3431 and the fourth driven wheel 3441 are preferably belt wheels, and the diameter of the fourth driven wheel 3441 is larger than that of the fourth driving wheel 3431. A fourth transmission belt 3432 is wound around the fourth driving wheel 3431 and the fourth driven wheel 3441. The fourth worm gear 3443 is pivotally connected to the mounting seat 321 and meshes with the fourth worm 3442. One end of the fourth rotating member 3444 is fixedly connected to the axle of the fourth worm gear 3443. The other end of the fourth rotating member 3444 is pivotally connected to one end of the fourth swinging member 3445. The other end of the fourth swinging member 3445 is used to drive the second rotating shaft 33. Specifically, the other end of the fourth swinging member 3445 is pivotally connected to the second rotating shaft 33, and the pivot point of the fourth swinging member 3445 and the second rotating shaft 33 deviates from the axis of the second rotating shaft 33. In this way, a high transmission ratio is achieved and self-locking can be realized by using the worm and worm gear, which can prevent the reaction force from being transmitted back to the fourth motor 343 and causing an impact on the fourth motor 343. Overall, the performance requirements for the fourth motor 343 are reduced, the service life of the fourth motor 343 is extended, and costs are saved. When the fourth motor 343 is started, the fourth motor 343 drives the fourth driving wheel 3431 to rotate. The fourth driving wheel 3431 drives the fourth driven wheel 3441 to rotate through the fourth transmission belt 3432. The fourth driven wheel 3441 drives the fourth worm 3442 to rotate. The fourth worm 3442 drives the fourth worm gear 3443 to rotate. The fourth worm gear 3443 drives the fourth rotating member 3444 to rotate. The fourth rotating member 3444 drives the fourth swinging member 3445 to swing. The fourth swinging member 3445 drives the second rotating shaft 33 to rotate relative to the swing arm 32, thereby controlling the angle of rotation of the second rotating shaft 33 relative to the swing arm 32. When the fourth motor 343 stops operating, the second rotating shaft 33 can be fixed relative to the swing arm 32.

[0096] It should be noted that the fourth transmission assembly 344 may also adopt any known structure as long as it can realize the function of driving the second rotating shaft 33 to rotate relative to the swing arm 32 by the fourth motor 343. The specific structure of the fourth transmission assembly 344 is not limited herein.

[0097] In addition, as a replacement method, the fourth motor 343 and the fourth transmission assembly 344 can also be installed on the connecting seat 41, and the fourth transmission assembly 344 will be connected between the fourth motor 343 and the swing arm 32. At this time, the fourth motor 343 can also drive the second rotating shaft 33 to rotate relative to the swing arm 32 through the fourth transmission assembly 344, thereby controlling the angle of rotation of the seat body 2 relative to the swing arm 32.

[0098] Embodiment 3

[0099] Refer to Figures 12 to 14 , this embodiment also discloses a children's rocking device. The difference between the children's rocking device of this embodiment and the children's rocking device of Embodiment 1 lies in: the different installation objects of the limiting member 341, and the different fixed and pivotally connected objects of the second rotating shaft 33.

[0100] In this embodiment, the second rotating shaft 33 is pivotally connected to the connecting seat 41, the second rotating shaft 33 is fixedly connected to the other end of the swing arm 32, the limiting portion 34 is arranged between the support frame 1 and the connecting seat 41, and the limiting portion 34 can drive the connecting seat 41 to rotate relative to the second rotating shaft 33, so that the connecting seat 41 rotates relative to the swing arm 32. In this way, the angle of rotation of the connecting seat 41 relative to the swing arm 32 can also be controlled, so that the connecting seat 41 drives the seat body 2 to deflect relative to the support frame 1 together, thereby controlling the change in the seat surface orientation of the seat body 2.

[0101] In the children's rocking device of this embodiment, the first motor 31 drives the swing arm 32 to swing reciprocally around the pivot point between the swing arm 32 and the support frame 1 (that is, around the first rotating shaft 35). The second rotating shaft 33 swings together with the swing arm 32. At the same time, the connecting seat 41 drives the seat body 2 to swing together with the second rotating shaft 33. At the same time, the limiting member 341 also swings together with the connecting seat 41 and the limiting member 341 also moves relative to the fitting groove 342. The fitting groove 342 drives the connecting seat 41 to swing relative to the swing arm 32 around the second rotating shaft 33 through the limiting member 341, thereby controlling the amplitude of rotation of the second rotating shaft 33 relative to the swing arm 32, so that the connecting seat 41 drives the seat body 2 to deflect relative to the support frame 1 together. In this way, different angles between the connecting seat 41 and the support frame 1 during compound swinging will cause the seat surface orientation of the seat body 2 to be variable, that is, the orientation when the second motor 42 drives the seat body 2 to reciprocate up and down is variable, thereby realizing the compound of three changes: displacement, orientation angle, and up and down angle. The movement trajectory of the seat body 2 is more three-dimensional and richer. Children are not likely to get bored and like it more, which can meet more needs of consumers.

[0102] Embodiment 4

[0103] This embodiment also discloses a children's rocking device. The difference between the children's rocking device of this embodiment and that of Embodiment 1 lies in: the difference in the limiting part 34, and the difference in the objects fixedly connected and pivotally connected to the second rotating shaft 33. Specifically, reference can be made to the combination of the solution of the limiting part 34 in Embodiment 2 and the solution of the objects fixedly connected and pivotally connected to the second rotating shaft 33 in Embodiment 3.

[0104] In this embodiment, referring to Embodiment 3, the second rotating shaft 33 is pivotally connected to the connecting seat 41, and the second rotating shaft 33 is fixedly connected to the other end of the swing arm 32; referring to Embodiment 2, of course, the limiting part 34 needs to correspondingly change its connection object, that is, the limiting part 34 is arranged between the swing arm 32 and the connecting seat 41, and the limiting part 34 can drive the connecting seat 41 to rotate relative to the second rotating shaft 33. In this way, the angle of rotation of the connecting seat 41 relative to the swing arm 32 can also be controlled, so that the connecting seat 41 drives the seat body 2 to deflect relative to the support frame 1 together, thereby controlling the change in the seat surface orientation of the seat body 2.

[0105] The composition of the limiting part 34 can refer to the limiting part 34 in Embodiment 2. As described in Embodiment 2, the limiting part 34 includes a fourth motor 343 and a fourth transmission assembly 344 (the specific component parts of the fourth transmission assembly 344 can refer to the description in Embodiment 2 and will not be elaborated here). What needs to be correspondingly changed to cause differences is that the fourth motor 343 and the fourth transmission assembly 344 will both be installed on the swing arm 32, and the fourth transmission assembly 344 is connected between the fourth motor 343 and the connecting seat 41. The fourth motor 343 drives the connecting seat 41 to rotate relative to the second rotating shaft 33 through the fourth transmission assembly 344, thereby controlling the angle of rotation of the connecting seat 41 relative to the second rotating shaft 33. Since the second rotating shaft 33 is fixedly connected to the swing arm 32, the angle of rotation of the connecting seat 41 relative to the swing arm 32 can be controlled.

[0106] In addition, as described in Embodiment 2, as an alternative, the fourth motor 343 and the fourth transmission assembly 344 can also be installed on the connecting seat 41, and the fourth transmission assembly 344 will be connected between the fourth motor 343 and the swing arm 32. At this time, the fourth motor 343 can also drive the connecting seat 41 to rotate relative to the swing arm 32 through the fourth transmission assembly 344.

[0107] It should be noted that since the limiting part 34 does not need to directly act on the second rotating shaft 33, the second rotating shaft 33 can also be fixedly connected to the connecting seat 41, and the second rotating shaft 33 is pivotally connected to the other end of the swing arm 32. At this time, the limiting part 34 will drive the connecting seat 41 and the second rotating shaft 33 to rotate relative to the swing arm 32 together. That is to say, the difference between this solution of this embodiment and that of Embodiment 1 will only lie in the difference in the limiting part 34.

[0108] Embodiment 5

[0109] Refer toFigure 15 and Figure 16 , this embodiment also discloses a children's rocking device. The difference between the children's rocking device of this embodiment and that of Embodiment 1 lies in that the basis of the up-and-down rotation of the seat body 2 is different in orientation.

[0110] Specifically, compared with Embodiment 1, in this embodiment, the seat body 2 is integrally twisted by 90 degrees or close to 90 degrees in the up-and-down direction, so that the orientation of the pivot axis between the seat body 2 and the connecting seat 41 rotates by 90 degrees or close to 90 degrees, that is, the basis of the up-and-down rotation of the seat body 2 changes by 90 degrees or close to 90 degrees.

[0111] For reference and understanding, taking the swing of the swing arm 32 as the direction reference, when the swing arm 32 swings left and right, the seat body 2 of Embodiment 1 rotates up and down around the pivot axis between the seat body 2 and the connecting seat 41 towards the front or towards the back (that is, the orientation of the up-and-down rotation of the seat body 2 is towards the front or towards the back), while the seat body 2 of this embodiment rotates up and down around the pivot axis between the seat body 2 and the connecting seat 41 towards the left or towards the right (that is, the orientation of the up-and-down rotation of the seat body 2 is towards the left or towards the right); when the swing arm 32 swings back and forth, the seat body 2 of Embodiment 1 rotates up and down around the pivot axis between the seat body 2 and the connecting seat 41 towards the left or towards the right (that is, the orientation of the up-and-down rotation of the seat body 2 is towards the left or towards the right), while the seat body 2 of this embodiment rotates up and down around the pivot axis between the seat body 2 and the connecting seat 41 towards the front or towards the back (that is, the orientation of the up-and-down rotation of the seat body 2 is towards the front or towards the back). That is to say, in this embodiment, the basis of the up-and-down rotation of the seat body 2 is arranged at a small angle with the swing direction of the swing arm 32 (preferably parallel or close to parallel). Of course, due to the function of the limiting part 34, therefore, the orientation of the up-and-down rotation of the seat body 2 also changes within a certain range based on the basis orientation.

[0112] Based on the difference in the basis of the up-and-down rotation of the seat body 2, in this embodiment, the extending direction of the transition connecting piece 44 is arranged in a cross with the extending direction of the swing arm 32, and the second transmission component 43 and the second motor 42 are arranged along the extending direction of the swing arm 32 and are respectively located on two opposite sides of the transition connecting piece 44. Specifically, the second transmission component 43 is located on the side of the transition connecting piece 44 towards the first rotating shaft 35, and the second motor 42 is located on the side of the transition connecting piece 44 towards the second rotating shaft 33.

[0113] In addition, referring to the difference between this embodiment and Embodiment 1, in any one of the children's rocking devices of Embodiments 2 to 4, the basis of the up-and-down rotation of the seat body 2 can also change by 90 degrees or close to 90 degrees. Correspondingly, the extending direction of the transition connecting piece 44 and the position arrangements of the second transmission component 43 and the second motor 42 will also change accordingly.

[0114] Example 6

[0115] Refer to Figure 17 and Figure 18 , this embodiment also discloses a children's rocking device. The difference between the children's rocking device of this embodiment and that of Embodiment 1 is that the transition connecting member 44 is cancelled.

[0116] In this embodiment, since the transition connecting member 44 is cancelled, the second round tooth 25 will no longer be provided on the seat body 2, and the other end of the second swinging member 435 in the second transmission assembly 43 is directly pivotally connected to the seat body 2. Of course, at this time, it is preferred that the pivotal connection point between the second swinging member 435 and the seat body 2 deviates from the pivotal connection point between the seat body 2 and the connection seat 41.

[0117] Refer to Figure 18 , specifically, the second transmission assembly 43 includes a second driven wheel 431, a second worm 432, a second worm gear 433, a second rotating member 434, a second swinging member 435. A second driving wheel 421 is fixedly connected to the output shaft of the second motor 42. The second worm 432 is pivotally connected to the connection seat 41. The second driven wheel 431 is fixedly connected to the second worm 432. The second driving wheel 421 and the second driven wheel 431 are in transmission connection. The second driving wheel 421 and the second driven wheel 431 are preferably belt wheels, and the diameter of the second driven wheel 431 is larger than that of the second driving wheel 421. The second transmission belt 422 is wound around the second driving wheel 421 and the second driven wheel 431. The second worm gear 433 is pivotally connected to the connection seat 41 and meshes with the second worm 432. One end of the second rotating member 434 is fixedly connected to the axle of the second worm gear 433. The other end of the second rotating member 434 is pivotally connected to one end of the second swinging member 435. The other end of the second swinging member 435 is pivotally connected to the seat body 2.

[0118] More specifically, when the seat body 2 includes a chair frame 21 and a swing seat 22, the swing seat 22 is pivotally connected to the connection seat 41, and the chair frame 21 is connected to the swing seat 22 (preferably the chair frame 21 is pivotally connected to the swing seat 22, and the pivotal connection structure between the chair frame 21 and the swing seat 22 can refer to the relevant description of Embodiment 1). The other end of the second swinging member 435 is pivotally connected to the swing seat 22, and the pivotal axis point between the second swinging member 435 and the swing seat 22 deviates from the pivotal connection point between the swing seat 22 and the connection seat 41.

[0119] In this way, a high transmission ratio can also be achieved and self-locking can be realized by using the worm and worm gear. For the specific effects, reference can be made to the relevant description of Embodiment 1.

[0120] Since the transitional connecting member 44 is cancelled, the relative arrangement positions of the second motor 42 and the second transmission assembly 43 on the connecting seat 41 will be referenced by the swing seat 22. Among them, the second motor 42 is located on one side of the swing seat 22 facing the first rotating shaft 35, and the second transmission assembly 43 is located on one side of the swing seat 22 facing the second rotating shaft 33.

[0121] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and retouches can be made, and these improvements and retouches are also regarded as the protection scope of the present utility model.

Claims

1. A child rocking device, characterized in that: include: Support frame, seat body, first electric drive mechanism, second electric drive mechanism, wherein, The first electric drive mechanism includes a first motor, a first transmission assembly, a swing arm, a first rotating shaft, and a second rotating shaft. The second electric drive mechanism includes a connecting seat, a second motor, and a second transmission assembly. One end of the swing arm is connected to the support frame via the first rotating shaft to achieve relative rotation. The first transmission assembly is connected between the first motor and the swing arm. The other end of the swing arm is connected to the connecting seat via the second rotating shaft to achieve relative rotation. The seat body is pivotally connected to the connecting seat. The second motor is installed on the connecting seat and connected to the second transmission assembly. The second transmission assembly is also connected to the seat body. When the first motor rotates, the second rotating shaft brings the connecting seat and the seat body to swing back and forth relative to the support frame. The second motor is used to drive the seat body to rotate back and forth relative to the support frame. It also includes a limiting part, which is arranged between the support frame and the second rotating axis, or between the swing arm and the second rotating axis, or between the support frame and the connecting seat, or between the swing arm and the connecting seat. The limiting part is used to control the rotation angle of the connecting seat relative to the swing arm so that the connecting seat and the seat body are deflected relative to the support frame. When the first motor and the second motor are driven simultaneously and the seat body is caused to swing in a compound manner under the control of the limiting part, the seat body undergoes a compound of three changes relative to the support frame: displacement, orientation angle, and upper and lower angle.

2. The child rocking device according to claim 1, characterized in that: The connecting seat is provided with a mounting groove which passes through from top to bottom, the seat body is pivotally connected to the mounting groove, and the seat body is provided with an upper limit protrusion and a lower limit protrusion, the upper limit protrusion is used to abut against the upper end of the mounting groove, and the lower limit protrusion is used to abut against the lower end of the mounting groove, so as to limit the angular range of rotation of the seat body relative to the connecting seat.

3. The child rocking device according to claim 1, characterized in that: The second electric drive mechanism also includes a transition connection piece, one end of the transition connection piece is pivotally connected to the connecting seat, and the other end of the transition connection piece is pivotally connected to the second transmission assembly, the transition connection piece is provided with a first gear tooth, and the seat body is provided with a second gear tooth meshing with the first gear tooth, the center of the pitch circle of the first gear tooth coincides with the pivot point between the transition connection piece and the connecting seat, and the center of the pitch circle of the second gear tooth coincides with the pivot point between the seat body and the connecting seat, and the second motor drives the transition connection piece to swing back and forth through the second transmission assembly, so that the transition connection piece drives the seat body to rotate back and forth up and down.

4. The child rocking device according to claim 3, characterized in that: The pitch circle radius of the first gear teeth is greater than the pitch circle radius of the second gear teeth.

5. The child rocking device according to claim 3, characterized in that: The distance between the pivot points at both ends of the transition connector is greater than the distance between the center of the pitch circle of the first gear tooth and the center of the pitch circle of the second gear tooth.

6. The child rocking device according to claim 3, characterized in that: When the swing arm swings left and right, the seat body rotates up and down in a direction toward the front or toward the rear; or, when the swing arm swings back and forth, the seat body rotates up and down in a direction toward the left or toward the right.

7. The child rocking device according to claim 6, characterized in that: The first gear teeth and the second gear teeth are located on the side of the pivot axis between the seat body and the connecting seat away from the second rotating axis, the other end of the transition connection extends toward the second rotating axis, and the second transmission assembly and the second motor are respectively located on two opposite sides of the transition connection.

8. The child rocking device according to claim 3, characterized in that: When the swing arm swings left and right, the seat body rotates up and down in the direction of the left side or the right side; or, when the swing arm swings back and forth, the seat body rotates up and down in the direction of the front or the back.

9. The child rocking device according to claim 8, characterized in that: The extension direction of the transition connection piece is cross-arranged with the extension direction of the swing arm, and the second transmission assembly and the second motor are arranged along the extension direction of the swing arm and are respectively located at two opposite sides of the transition connection piece.

10. The child rocking device according to claim 1, characterized in that: The second transmission assembly includes a second driven wheel, a second worm, a second worm wheel, a second rotating member, and a second swinging member. A second driving wheel is fixedly connected to the output shaft of the second motor. The second worm wheel is pivotally connected to the connecting seat. The second driven wheel is fixedly connected to the second worm wheel. The second driving wheel and the second driven wheel are transmission-connected. The second worm wheel is pivotally connected to the connecting seat and meshes with the second worm wheel. One end of the second rotating member is fixedly connected to the axle of the second worm wheel. The other end of the second rotating member is pivotally connected to one end of the second swinging member. The other end of the second swinging member is used to drive the seat body.

11. The child rocking device according to claim 1, characterized in that: The first transmission assembly includes a first driven wheel, a first worm, a first worm wheel, a first rotating member, and a first swinging member. A first driving wheel is fixedly connected to the output shaft of the first motor. The first worm is pivotally connected to the support frame. The first driven wheel is fixedly connected to the first worm. The first driving wheel and the first driven wheel are in transmission connection. The first worm wheel is pivotally connected to the support frame and meshes with the first worm. One end of the first rotating member is fixedly connected to the axle of the first worm wheel, the other end of the first rotating member is pivotally connected to one end of the first swinging member, and the other end of the first swinging member is pivotally connected to the swing arm.

12. The child rocking device according to any one of claims 1 to 11, characterized in that: The seat body includes a chair frame and a swing seat, the swing seat is pivotally connected to the connecting seat, the chair frame is pivotally connected to the swing seat, the pivot axis between the swing seat and the connecting seat and the pivot axis between the chair frame and the swing seat are arranged at an angle, and the chair frame can be rotated relative to the swing seat to change the seat surface orientation of the chair frame.

13. The child rocking device according to claim 12, characterized in that: The pivot axis between the swing seat and the connecting seat is perpendicular to the pivot axis between the chair frame and the swing seat.

14. The child rocking device according to any one of claims 1 to 11, characterized in that: The pivot point between the seat body and the connecting seat is centrally arranged between the first rotating shaft and the second rotating shaft.

15. The child rocking device according to any one of claims 1 to 11, characterized in that: The second rotating shaft is fixedly connected to the connecting seat, and the second rotating shaft is pivotally connected to the other end of the swing arm. The limiting part is arranged between the supporting frame and the second rotating shaft or between the swing arm and the second rotating shaft, and the limiting part can drive the second rotating shaft to rotate relative to the swing arm.

16. The child rocking device according to claim 15, characterized in that: The limiting part includes a limiting piece and a matching groove. The limiting piece is fixedly connected to the second rotating shaft or the connecting seat. The matching groove is installed on the supporting frame. The limiting piece matches with the matching groove. When the second rotating shaft directly or indirectly carries the limiting piece and swings with the swing arm, the limiting piece can move relative to the matching groove to control the rotation angle of the second rotating shaft relative to the swing arm.

17. The child rocking device according to claim 15, characterized in that: The limiting part includes a fourth motor and a fourth transmission assembly, the fourth motor and the fourth transmission assembly are both installed on the swing arm, the fourth transmission assembly is connected between the fourth motor and the second rotating shaft, and the fourth motor drives the second rotating shaft to rotate relative to the swing arm through the fourth transmission assembly, thereby controlling the rotation angle of the second rotating shaft relative to the swing arm.

18. A child rocking device according to any one of claims 1 to 11, characterized in that: The second rotating shaft is pivotally connected to the connecting seat, and the second rotating shaft is fixedly connected to the other end of the swing arm. The limiting part is arranged between the support frame and the connecting seat or between the swing arm and the connecting seat, and the limiting part can drive the connecting seat to rotate relative to the second rotating shaft.

19. The child rocking device according to claim 18, characterized in that: The limiting part includes a limiting piece and a matching groove. The limiting piece is connected to the connecting seat. The matching groove is installed on the supporting frame. The limiting piece matches with the matching groove. When the connecting seat swings with the swing arm with the limiting piece, the limiting piece can move relative to the matching groove to control the rotation angle of the connecting seat relative to the second rotating axis.

20. The child rocking device according to claim 18, characterized in that: The limiting part includes a fourth motor and a fourth transmission assembly, the fourth motor and the fourth transmission assembly are both installed on the swing arm, the fourth transmission assembly is connected between the fourth motor and the connecting seat, and the fourth motor drives the connecting seat to rotate relative to the second rotating shaft through the fourth transmission assembly, thereby controlling the rotation angle of the connecting seat relative to the second rotating shaft.

21. The child rocking device according to claim 16 or 19, characterized in that: It also includes a mode conversion part, which is installed on the support frame, connected to the matching slot, and the matching slot is movably connected to the support frame. The mode conversion part can drive the matching slot to change position.

22. The child rocking device according to claim 21, characterized in that: The first motor and the first transmission assembly are located on one side of the swing arm, and the mode conversion unit is located on the other side of the swing arm.

23. The child rocking device according to claim 1, characterized in that: The second transmission assembly includes a second driven wheel, a second worm, a second worm wheel, a second rotating member, and a second swinging member. A second driving wheel is fixedly connected to the output shaft of the second motor. The second worm wheel is pivotally connected to the connecting seat. The second driven wheel is fixedly connected to the second worm wheel. The second driving wheel and the second driven wheel are transmission-connected. The second worm wheel is pivotally connected to the connecting seat and meshes with the second worm wheel. One end of the second rotating member is fixedly connected to the axle of the second worm wheel, the other end of the second rotating member is pivotally connected to one end of the second swinging member, and the other end of the second swinging member is pivotally connected to the seat body.

24. The child rocking device according to claim 23, characterized in that: The seat body includes a chair frame and a swing seat, the swing seat is pivotally connected to the connecting seat, the chair frame is connected to the swing seat, the other end of the second swing member is pivotally connected to the swing seat, and the pivot point between the second swing member and the swing seat deviates from the pivot point between the swing seat and the connecting seat.

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