Cradle driving device

Abstract

The invention discloses a cradle driving device in the technical field of toys for children, and aims to solve the problems that the cradle driving device in the prior art is short in service life and not smooth and fine enough in shaking. The cradle comprises a cradle connecting base used for being connected with a cradle; the eccentric gear device is used for being connected with the cradle connecting base and further used for pushing the cradle connecting base in the first direction. And the reverse thrust device is connected with the cradle connecting base, when the eccentric gear device pushes the cradle connecting base, the reverse thrust device stores energy, and when the reverse thrust device releases energy, the cradle connecting base can be pushed in the reverse direction of the first direction. The motion characteristics of the eccentric gear device and the reverse thrust device are utilized to improve the smoothness and fineness of the cradle in the shaking reciprocating action, and the shaking reciprocating action of the cradle is driven without reversing by utilizing the motion characteristics of the eccentric gear device, so that the service life of the eccentric gear device is longer than that of the prior art; and the structure of the eccentric gear device is further protected by utilizing the reverse thrust effect of the reverse thrust device.

Description

Technical Field

[0001] The invention relates to a cradle driving device and belongs to the technical field of children's toys. Background Art

[0002] In the prior art, the cradle achieves a rocking effect by driving the cradle driving device. The rocking action of the cradle requires the cradle driving device to be realized by reciprocating motion, but the traditional cradle driving device represented by the motor mechanism needs to be constantly reversed to achieve the effect of driving the cradle to reciprocate, which will reduce the life of the cradle driving device; and the reciprocating motion effect achieved by reversing is relatively stiff, and the rocking action is not smooth and delicate enough. Summary of the invention

[0003] The purpose of the present application is to overcome the deficiencies in the prior art and to provide a cradle driving device which has a long service life when driving the cradle to perform reciprocating motion and has smooth and delicate reciprocating motion.

[0004] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions: The present application provides a cradle driving device, comprising: A cradle connection base, used to connect with the cradle; An eccentric gear device, the eccentric gear device is connected to the cradle connection base, and the eccentric gear device is used to push the cradle connection base; A reverse thrust device is connected to the cradle connection base. When the eccentric gear device pushes the cradle connection base, the reverse thrust device stores energy. When the reverse thrust device releases energy, it can push the cradle connection base. The direction in which the reverse thrust device pushes the cradle connection base is opposite to the direction in which the eccentric gear device pushes the cradle connection base.

[0005] In some embodiments of the present application, the eccentric gear device includes a first eccentric gear and a second eccentric gear that are meshed with each other, the second eccentric gear is connected to the sliding seat, and the sliding seat is used to connect to the cradle connection base; the first eccentric gear is connected to the first motor transmission, and when the first eccentric gear and the second eccentric gear rotate, the sliding seat pushes the cradle connection base.

[0006] In some embodiments of the present application, the eccentric gear device further includes a first fixed seat and a connecting rod, the sliding seat includes a first sliding member and a push rod connected to the first sliding member, the first sliding member is slidably connected to the first fixed seat, and the push rod is used to push the cradle to connect to the base; The first rotating center of the first eccentric gear and the second rotating center of the second eccentric gear are connected by the connecting rod; The first eccentric of the first eccentric gear is rotationally connected to the first fixed seat, and the first eccentric is spaced a set distance from the first rotating center; the second eccentric of the second eccentric gear is rotationally connected to the sliding seat, and the second eccentric is spaced a set distance from the second rotating center.

[0007] In some embodiments of the present application, the cradle is connected to the base to form a slide groove; The sliding seat includes a first slider, which is located in the sliding groove. The sliding groove is used to prevent the first slider from escaping along the second direction. The first slider can slide in the sliding groove along the third direction.

[0008] In some embodiments of the present application, the reverse thrust device includes a second fixed seat, a reverse thrust rod and an elastic energy storage member, the elastic energy storage member is force-transmittingly connected to the reverse thrust rod, the elastic energy storage member is fixed to the second fixed seat, and the reverse thrust rod is force-transmittingly connected to the cradle connection base; When the eccentric gear device pushes the cradle connection base, the elastic energy storage member stores energy; when the elastic energy storage member releases energy, the cradle connection base can be pushed by the reverse thrust rod. In some embodiments of the present application, the cradle is connected to the base to form a slide groove; The reverse thrust device also includes a second slider connected to the reverse thrust rod, the second slider is located in the slide groove, the slide groove is used to prevent the second slider from escaping along the first direction, and the second slider can slide in the slide groove along the third direction.

[0009] In some embodiments of the present application, the eccentric gear device and the reverse thrust device are both arranged on a mounting seat; The cradle connection base is slidably connected to the mounting seat via a third sliding member.

[0010] In some embodiments of the present application, a lead screw device and a connecting frame are also included; The screw device comprises a slide rod connected to the cradle connection base and a lifting screw rotatably connected to the cradle connection base, and the lifting screw is transmission-connected to the second motor; The connecting frame includes a movable block and a sliding rod sleeve and a lead screw sleeve respectively connected to the movable block, the movable block is used to connect with the cradle, the sliding rod sleeve is sleeved on the sliding rod, and the lead screw sleeve is threadedly connected to the lifting lead screw; When the second motor drives the lifting screw to rotate, the movable block rises or falls.

[0011] In some embodiments of the present application, the movable block is sleeved on a plurality of the sliding rods; The connecting frame also includes a plurality of wear-reducing rollers, the wear-reducing rollers are rotatably connected to the movable block, and each of the sliding rods is respectively rollingly connected to the wear-reducing rollers.

[0012] In some embodiments of the present application, the eccentric gear device includes a first pushing device and a second pushing device whose pushing directions are perpendicular to each other; the reverse thrust device includes a first reverse thrust device corresponding to the direction of the first pushing device and a second reverse thrust device corresponding to the direction of the second pushing device; The first pushing device, the first reverse pushing device, the second pushing device and the second reverse pushing device are all slidably abutted against the cradle connection base respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The cradle driving device provided in the present application not only utilizes the movement characteristics of the eccentric gear device and the reverse thrust device to improve the smoothness and delicacy of the rocking reciprocating motion of the cradle, utilizes the movement characteristics of the eccentric gear device to realize the rocking reciprocating motion of the cradle without reversing, so that the eccentric gear device has a longer service life than the prior art, but also utilizes the reverse thrust of the reverse thrust device to further protect the structure of the eccentric gear device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 is a schematic left view of the structure of the cradle driving device provided in this embodiment; Figure 2 is a schematic rear view of the structure of the cradle driving device provided in this embodiment; Figure 3 is a schematic front view of the structure of the cradle driving device provided in this embodiment; Figure 4 is a schematic top view of the structure of the cradle driving device provided in this embodiment; Figure 5 is a schematic isometric view of the structure of the cradle drive device provided in this embodiment; Figure 6 is a schematic cross-sectional view showing the structure of a connecting rod in an eccentric gear device in the cradle driving device provided in this embodiment; Figure 7 is a schematic cross-sectional view showing the eccentric structure of the eccentric gear device in the cradle driving device provided in this embodiment; Figure 8 is a schematic cross-sectional view of the structure of the reverse thrust device in the cradle driving device provided in this embodiment; Fig. 9 is a schematic bottom cross-sectional view showing the structure of the third gear and the fourth gear in the lead screw device in the cradle driving device provided in this embodiment; Fig.10 is a schematic rear cross-sectional view showing the internal structure of the lead screw device and the connecting frame in the cradle driving device provided in this embodiment; Fig.11 is a schematic right view of the structure of the cradle driving device provided in this embodiment; In the figure: 1, eccentric gear device; 1.1, first eccentric gear; 1.1.1, first rotating center; 1.1.2, first eccentric; 1.2, second eccentric gear; 1.2.1, second rotating center; 1.2.2, second eccentric; 1.3, first fixed seat; 1.4, sliding seat; 1.4.1, first sliding member; 1.4.2, push rod; 1.4.3, first slider; 1.5, connecting rod; 1.6, first motor; 1.7, first reducer; 11, first pushing device; 12, second pushing device; 2. Mounting seat; 3. Reverse thrust device; 3.1. Reverse thrust rod; 3.2. Second slider; 3.3. Second fixed seat; 3.4. Anti-slip plate; 3.5. Elastic energy storage member; 31. First reverse thrust device; 32. Second reverse thrust device; 4. Cradle connected to base; 4.1. Slide; 4.2. Third sliding member; 5. Screw device; 5.1. Sliding rod; 5.2. Lifting screw; 5.3. Third gear; 5.4. Fourth gear; 5.5. Transmission belt; 5.6. Second motor; 5.7. Second reducer; 5.8. Second frame; 6. Connecting frame; 6.1. Sliding rod sleeve; 6.2. Lead screw sleeve; 6.3. First bracket; 6.4. Movable block; 6.5. Friction-reducing roller. DETAILED DESCRIPTION

[0016] It should be noted that: "first direction a", "second direction b" and "third direction c" are only for a single "eccentric gear device 1-reverse thrust device 3" combination (for example, "first thrust device 11-first reverse thrust device 31" combination). If the cradle drive device has multiple "eccentric gear device 1-reverse thrust device 3" combinations, then the "first direction a", "second direction b" and "third direction c" in each "eccentric gear device 1-reverse thrust device 3" combination will have different definitions.

[0017] The following will be combined with the drawings in the embodiments of this application / this application to clearly and completely describe the technical solutions in the embodiments of this application / this application. Obviously, the described embodiments are only part of the embodiments of this application / this application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the application / this application and its application or use. Embodiment 1

[0018] The present embodiment provides a cradle driving device to solve the problem in the prior art that the cradle driving device lacks a smooth and delicate effect when driving the cradle to make reciprocating motion, and the back-and-forth switching leads to a short service life.

[0019] refer to Figures 1 to 11 The cradle driving device provided in this embodiment includes a cradle connecting base 4, which is used to connect to the cradle, and the cradle is not shown in the drawings; An eccentric gear device 1, the eccentric gear device 1 is connected to the cradle connection base 4, and the eccentric gear device 1 is used to push the cradle connection base 4; The reverse thrust device 3 is connected to the cradle connecting base 4. When the eccentric gear device 1 pushes the cradle connecting base 4, the reverse thrust device 3 stores energy. When the reverse thrust device 3 releases energy, it pushes the cradle connecting base 4. The direction in which the reverse thrust device 3 pushes the cradle connecting base 4 is opposite to the direction in which the eccentric gear device 1 pushes the cradle connecting base 4. For the convenience of description, in this embodiment and subsequent embodiments, the direction in which the eccentric gear device 1 pushes the cradle connecting base 4 is defined as a "first direction a" in some scenarios, and the direction in which the reverse thrust device 3 pushes the cradle connecting base 4 is defined as a "second direction b".

[0020] Non-exclusive method of use: Install the cradle on the eccentric gear device 1. Use a power source (such as Figure 5 The first motor 1.6) shown in the figure outputs power to the eccentric gear device 1. Based on the movement principle of the eccentric gear device 1, the eccentric gear device 1 converts the input power into a delicate and smooth nonlinear driving effect. Figure 4 and Figure 6 , the eccentric gear device 1 pushes the cradle connection base 4 to move in the first direction a. Since the cradle connection base 4 is not only connected to the eccentric gear device 1, but also connected to the reverse thrust device 3, when the eccentric gear device 1 pushes the cradle connection base 4 to move in the first direction a, the cradle connection base 4 moving in the first direction a is also pushing the reverse thrust device 3, and the reverse thrust device 3 can store energy in this process. When the eccentric gear device 1 stops pushing the cradle connection base 4, or when the thrust of the eccentric gear device 1 is less than the thrust of the reverse thrust device 3, the reverse thrust device 3 pushes the cradle connection base 4 in the opposite direction of the first direction to restore the position of the cradle connection base 4.

[0021] refer to Figure 4 , Figure 6 and Figure 8 For the convenience of description, in this embodiment and the following other embodiments, the opposite direction of the first direction a is defined as the second direction b.

[0022] The reverse thrust device 3 reversely pushes the cradle connecting base 4 based on the release of accumulated energy, and the thrust in this process is generally nonlinear; secondly, in the process of the reverse thrust device 3 reversely pushing the cradle connecting base 4 in the second direction b to reset, the reverse thrust device 3 also pushes the eccentric gear device 1 at the interval of the cradle connecting base 4. Along with the pushing action in the second direction b, the inside of the eccentric gear device 1 is also reset, and the nonlinear reaction force (along the first direction a) generated when the eccentric gear device 1 is reset also acts on the cradle connecting base 4, making the reset process of the cradle connecting base 4 smoother and more delicate.

[0023] The resetting process inside the eccentric gear device 1 can be carried out under the pushing action of the second direction b, or can be carried out under the continuous driving of the power source. Due to the movement properties of the eccentric gear device 1, the power output by the power source to the eccentric gear device 1 does not need to be reversed to achieve the eccentric gear device 1 being pushed out in the first direction a and then retracted in the second direction b.

[0024] In addition, since the eccentric gear device 1 only needs to rotate in the same order and direction and can be reset without reversing, the service life of the eccentric gear device 1 is relatively long; in this embodiment, the power source matching the eccentric gear device 1 also does not need to be reversed, and the cradle drive device provided in this embodiment also increases the service life of the matching power source.

[0025] The resetting of the cradle connection base 4 is mainly based on the energy release of the reverse thrust device 3, which avoids the retraction and pulling action of the eccentric gear device 1 generated by its own resetting to drive the cradle connection base 4 to reset; in most cases, the retraction and resetting action of the eccentric gear device 1 itself does not participate in or assists in the resetting action of the cradle connection base 4. This is intended to reduce the pulling damage to the eccentric gear device 1 and increase the service life of the cradle connection base 4.

[0026] The reverse thrust device 3 can be implemented in other forms known in the art, such as flywheel energy storage, compressed air energy storage based on piston cylinders, gravity energy storage based on counterweights and pendulum energy storage, and even more other known forms, which will not be elaborated here.

[0027] For flywheel energy storage, a flywheel can be set in the reverse thrust device 3. The flywheel converts the push of the cradle connection base 4 on the reverse thrust device 3 into the rotation of the flywheel through a set of reversing structures. The flywheel can also convert its own rotation into a push on the cradle connection base 4 in the second direction b through the reversing structure. For the piston cylinder, the piston rod can be used to convert the push of the cradle connection base 4 on the reverse thrust device 3 into compression of the air in the cylinder. When the air in the cylinder expands, the cradle connection base 4 is pushed in the second direction b through the piston rod. For the gravity energy storage solution, a lifting device and a counterweight installed on the lifting device can be set. The lifting device converts the push of the cradle connection base 4 on the reverse thrust device 3 into the lifting movement of the counterweight. When the counterweight descends, the gravitational potential energy of the counterweight is converted into a push on the cradle connection base 4 in the second direction b through the lifting device. For pendulum energy storage, the push of the cradle connection base 4 on the reverse thrust device 3 can be converted into the swing of the pendulum through the driving shaft, and similarly, the swing of the pendulum can be converted into the push of the cradle connection base 4 in the second direction b through the driving shaft. Moreover, any of the above-mentioned specific solutions of the reverse thrust device 3 can realize nonlinear pushing of the cradle connection base 4.

[0028] In summary, the cradle driving device provided in this embodiment not only utilizes the movement characteristics of the eccentric gear device 1 and the reverse thrust device 3 to improve the smoothness and delicacy of the rocking reciprocating motion of the cradle, utilizes the movement characteristics of the eccentric gear device 1 to realize the rocking reciprocating motion of the cradle without reversing, so that the eccentric gear device 1 has a longer service life than the prior art, but also utilizes the reverse thrust of the reverse thrust device 3 to further protect the structure of the eccentric gear device 1. Embodiment 2

[0029] This embodiment provides a cradle driving device. This embodiment is optimized on the basis of the first embodiment to improve the technical effect and refine the technical solution. For the contents not fully described in this embodiment, please refer to the first embodiment.

[0030] The cradle drive device can be arranged with multiple "eccentric gear device 1-reverse thrust device 3" combinations. As one embodiment, refer to Figure 4 The eccentric gear device 1 includes a first pushing device 11 and a second pushing device 12 in pushing directions perpendicular to each other; the reverse thrust device 3 includes a first reverse thrust device 31 corresponding to the direction of the first pushing device 11 and a second reverse thrust device 32 corresponding to the direction of the second pushing device 12. In this embodiment, sliding abutment is used as a connection method between the first pushing device 11, the first reverse thrust device 31, the second pushing device 12, and the second reverse thrust device 32 and the cradle connection base 4.

[0031] refer to Figure 6When the first pushing device 11 pushes the cradle connecting base 4 along the first direction a or the first reverse thrust device 31 pushes the cradle connecting base 4 along the second direction b, the second pushing device 12 and the second reverse thrust device 32 slide against the outer wall of the cradle connecting base 4; when the second pushing device 12 or the second reverse thrust device 32 pushes the cradle connecting base 4, the first pushing device 11 and the first reverse thrust device 31 slide against the outer wall of the cradle connecting base 4 along the third direction c.

[0032] The cradle driving device provided in this embodiment can realize the coordinated operation of multiple "eccentric gear devices 1-reverse thrust devices 3" combinations without interfering with each other. Embodiment 3

[0033] This embodiment provides a cradle driving device. This embodiment is optimized on the basis of the second embodiment to improve the technical effect and refine the technical solution. For the contents not fully described in this embodiment, please refer to the second embodiment.

[0034] This embodiment provides a specific structure of the eccentric gear device 1. As one embodiment, refer to Figure 6 and Figure 7 The eccentric gear device 1 includes a first eccentric gear 1.1 and a second eccentric gear 1.2 that are meshed with each other. The second eccentric gear 1.2 is connected to a sliding seat 1.4, and the sliding seat 1.4 is used to connect to a cradle connecting base 4; the first eccentric gear 1.1 is transmission-connected to a first motor 1.6, and the first motor 1.6 is used to drive the first eccentric gear 1.1 to rotate. When the first eccentric gear 1.1 rotates, the second eccentric gear 1.2 is also synchronously driven to rotate. Since the first eccentric gear 1.1 and the second eccentric gear 1.2 both have the property that the rotation center and the geometric axis do not coincide, in the first half of a single rotation cycle of the first eccentric gear 1.1 and the second eccentric gear 1.2, the sliding seat 1.4 will gradually move away from the first eccentric gear 1.1 nonlinearly, so that the sliding seat 1.4 pushes the cradle connecting base 4 in a first direction. After the sliding seat 1.4 reaches the maximum extension distance, it enters the second half of a single rotation cycle. When the first eccentric gear 1.1 and the second eccentric gear 1.2 continue to rotate step by step, the sliding seat 1.4 will gradually and nonlinearly return to a position close to the first eccentric gear 1.1 until the rotation cycle of the single eccentric gear device 1 is completed.

[0035] Continue to refer Figure 6 and Figure 7As one embodiment, the eccentric gear device 1 further includes a first fixed seat 1.3 and a connecting rod 1.5, the sliding seat 1.4 includes a first sliding member 1.4.1 and a push rod 1.4.2 connected to the first sliding member 1.4.1, the first sliding member 1.4.1 is slidably connected to the first fixed seat 1.3, and the push rod 1.4.2 is used to push the cradle to connect to the base 4. The first sliding member 1.4.1 can be engaged in the first fixed seat 1.3 to achieve a slidable connection with the first fixed seat 1.3, or a first slide rail can be provided on the first fixed seat 1.3, and the first sliding member 1.4.1 can be provided on the first slide rail to achieve a slidable connection between the first sliding member 1.4.1 and the first fixed seat 1.3.

[0036] The first rotating center 1.1.1 of the first eccentric gear 1.1 and the second rotating center 1.2.1 of the second eccentric gear 1.2 are connected by a connecting rod 1.5, and the connecting rod 1.5 is used to ensure that the first eccentric gear 1.1 and the second eccentric gear 1.2 are tightly meshed. The first eccentric 1.1.2 of the first eccentric gear 1.1 is rotationally connected to the first fixed seat 1.3, and the first eccentric 1.1.2 is separated from the first rotating center 1.1.1 by a set distance; the second eccentric 1.2.2 of the second eccentric gear 1.2 is rotationally connected to the sliding seat 1.4, and the second eccentric 1.2.2 is separated from the second rotating center 1.2.1 by a set distance, thereby achieving the property of having the rotation center and the geometric axis not coinciding.

[0037] refer to Figure 8 As one embodiment, the reverse thrust device 3 includes a second fixed seat 3.3, a reverse thrust rod 3.1 and an elastic energy storage member 3.5, the elastic energy storage member 3.5 is connected to the reverse thrust rod 3.1 by force transmission, the elastic energy storage member 3.5 is fixed to the second fixed seat 3.3, and the reverse thrust rod 3.1 is connected to the cradle connection base 4 by force transmission; Figure 8 For example, when the eccentric gear device 1 pushes the cradle connection base 4 in the first direction a, the elastic energy storage member 3.5 stores energy; when the elastic energy storage member 3.5 releases energy, the cradle connection base 4 can be pushed in the second direction b through the reverse thrust rod 3.1.

[0038] As one embodiment, the elastic energy storage member 3.5 can be a spring, the reverse thrust rod 3.1 is slidably connected to the preset opening of the second fixed seat 3.3, and an anti-drop plate 3.4 can be provided at one end of the reverse thrust rod 3.1 located in the second fixed seat 3.3, and the anti-drop plate 3.4 is used to prevent the reverse thrust rod 3.1 from completely falling out of the second fixed seat 3.3; the elastic energy storage member 3.5 is in the second fixed seat 3.3, and the two ends of the elastic energy storage member 3.5 are respectively connected to the inner wall of the second fixed seat 3.3 and the anti-drop plate 3.4. Figure 8When the reverse thrust rod 3.1 moves toward the second fixed seat 3.3 along the first direction a under the push of the eccentric gear device 1 and the cradle connecting base 4, the elastic energy storage member 3.5 is compressed or stretched and accumulates elastic potential energy. When the elastic energy storage member 3.5 in compression or stretching releases the elastic potential energy, it pushes or pulls the reverse thrust rod 3.1 to extend toward the cradle connecting base 4 along the second direction b, thereby achieving the effect of driving the eccentric gear device 1 and the cradle connecting base 4 to reset.

[0039] In the second embodiment, multiple "eccentric gear device 1-reverse thrust device 3" combinations work together without interfering with each other. In this embodiment, in order to ensure that multiple "eccentric gear device 1-reverse thrust device 3" combinations can work simultaneously and meet the rich rocking action requirements of the cradle, reference Figure 6 and Figure 8 A slide groove 4.1 is provided on the outer wall of the cradle connection base 4, and the height and position of the slide groove 4.1 correspond to the eccentric gear device 1 and the reverse thrust device 3 respectively. The sliding seat 1.4 also includes a first slider 1.4.3, which can be arranged at a position where the push rod 1.4.2 is close to the cradle connection base 4, and the first slider 1.4.3 is located in the slide groove 4.1, so as to Figure 6 For example, the slide groove 4.1 is used to prevent the first slider 1.4.3 from escaping along the second direction b, thereby preventing the first slider 1.4.3 from escaping from the outer wall of the cradle connection base 4, and at the same time, the first slider 1.4.3 can slide along the third direction c in the slide groove 4.1. The reverse thrust device 3 is also correspondingly provided with a second slider 3.2 connected to the reverse thrust rod 3.1, and the second slider is located in the slide groove 4.1, referring to Figure 8 The slide groove 4.1 is used to prevent the second slider 3.2 from escaping along the first direction a, and to prevent the second slider 3.2 from being separated from the outer wall of the cradle connection base 4. The second slider 3.2 can slide in the slide groove 4.1 along the third direction c.

[0040] Through the combination of the first slider 1.4.3, the second slider 3.2 and the slide groove 4.1, the eccentric gear device 1 and the reverse thrust device 3 are respectively slidably abutted against the cradle connection base 4. Figure 4 For example, when the first pusher 11 and the first reverse pusher 31 push the cradle connection base 4 back and forth in the first direction a and the second direction c to shake, the second pusher 12 and the second reverse pusher 32 respectively slide the first slider 1.4.3 and the second slider 3.2 in the slide groove 4.1 to achieve sliding contact with the cradle connection base 4 without being disturbed by the movement of the first pusher 11 and the first reverse pusher 31. Figure 4 For example, the second pushing device 12 and the second reverse thrust device 32 can drive the cradle connection base 4 to reciprocate in a direction perpendicular to the first direction a and the second direction c while the first pushing device 11 and the first reverse thrust device 31 are working. Figure 4For example, when the second pusher 12 and the second reverse thrust device 32 drive the cradle connection base 4 to reciprocate and shake, the first pusher 11 and the first reverse thrust device 31 respectively slide along the third direction c in the slide groove 4.1 through another set of first sliders 1.4.3 and second sliders 3.2 to achieve sliding contact with the cradle connection base 4 without being disturbed by the movement of the second pusher 12 and the second reverse thrust device 32. In addition, this embodiment can realize that multiple sets of "eccentric gear device 1-reverse thrust device 3" combinations work simultaneously, providing the cradle with a reciprocating shaking effect in multiple directions.

[0041] As one example, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.11 In this embodiment, the cradle driving device also includes a mounting seat 2, and the eccentric gear device 1 and the reverse thrust device 3 are both arranged on the mounting seat 2, and the mounting seat 2 provides force support for the eccentric gear device 1 and the reverse thrust device 3. The cradle connecting base 4 is also arranged on the mounting seat 2, but considering the movement effect of the cradle connecting base 4, one or more third sliding members 4.2 can be arranged at the bottom of the cradle connecting base 4 near the mounting seat 2, and the cradle connecting base 4 is supported on the mounting seat 2 by the third sliding members 4.2. When the cradle connecting base 4 performs reciprocating motion, it slides with the mounting seat 2 through the third sliding members 4.2. The third sliding member 4.2 can be implemented in other forms known in the art, such as a universal wheel, a rolling ball, or even more other known forms, which will not be repeated here.

[0042] The eccentric gear device 1 and the reverse thrust device 3 are generally used to drive the cradle connecting base 4 to perform a two-dimensional reciprocating shaking motion. Although in theory the eccentric gear device 1 and the reverse thrust device 3 can also be used for the cradle connecting base 4 to perform an up and down shaking motion, this embodiment takes into account that if the cradle driving device suddenly loses power, the cradle connected to the cradle connecting base 4 may be at risk of suddenly falling. Therefore, this embodiment uses another set of screw devices 5 and a connecting frame 6 matching the screw device 5 to control the cradle connecting base 4 to perform an up and down shaking motion.

[0043] refer to Figures 1 to 5 as well as Fig.10 , Fig.11As one embodiment, the screw device 5 includes a slide bar 5.1 connected to the cradle connection base 4 and a lifting screw 5.2 rotatably connected to the cradle connection base 4, and the lifting screw 5.2 is connected to the second motor 5.6 in a transmission connection. The connecting frame 6 includes a movable block 6.4 and a slide bar sleeve 6.1 and a screw sleeve 6.2 respectively connected to the movable block 6.4. The movable block 6.4 is used to connect with the cradle, the slide bar sleeve 6.1 is sleeved on the slide bar 5.1, and the screw sleeve 6.2 is threadedly connected to the lifting screw 5.2. When the second motor 5.6 drives the lifting screw 5.2 to rotate in different directions, the movable block 6.4 rises or falls based on the cooperation between the slide bar 5.1 and the slide bar sleeve 6.1 and the lifting screw 5.2 and the screw sleeve 6.2. When the second motor 5.6 is accidentally powered off, due to the existence of the thread friction between the screw sleeve 6.2 and the lifting screw 5.2, the movable block 6.4 will maintain its height or slowly fall, thereby avoiding the sudden fall of the movable block 6.4. As one of the embodiments, a plurality of mutually cooperating threads may be provided between the lifting screw 5.2 and the screw sleeve 6.2 to improve the fineness of the lifting and lowering movement of the movable block 6.4.

[0044] It is particularly pointed out that the cradle connection base 4 is connected to the movable block 6.4 through some parts of the screw device 5, and the movable block 6.4 is further connected to the cradle. This connection method is also regarded as a form of connection between the cradle connection base 4 and the cradle.

[0045] The movable block 6.4 is sleeved on a plurality of slide bars 5.1 to share the lateral load generated by the child turning over in the cradle. However, the movable block 6.4 will reciprocate up and down under the drive of the lifting screw 5.2. During this process, the unbalanced lateral load on the movable block 6.4 will cause greater friction between a certain slide bar 5.1 and the slide bar sleeve 6.1. Therefore, Figure 2 , Figure 3 and Fig.10 As one embodiment, the connecting frame 6 further includes a plurality of wear-reducing rollers 6.5, the wear-reducing rollers 6.5 are rotationally connected to the movable block 6.4, and each slide bar 5.1 is respectively rollingly connected to the wear-reducing rollers 6.5. Specifically, refer to Figure 3 and Fig.10 The two groups of anti-friction rollers 6.5 are respectively distributed in two mutually perpendicular directions of the slide bar 5.1. When the movable block 6.4 reciprocates up and down, the unbalanced lateral load caused by the rolling of the child in the cradle is transmitted to the anti-friction roller 6.5 at a certain place through the movable block 6.4. The anti-friction roller 6.5 at this place then transmits the lateral load to the slide bar 5.1, avoiding the generation of large friction between the slide bar 5.1 and the slide bar cover 6.1. The rolling friction between the slide bar 5.1 and the anti-friction roller 6.5 is smaller than the sliding friction between the slide bar 5.1 and the slide bar cover 6.1.

[0046] As one embodiment, in order to balance the forces between the wear-reducing rollers 6.5 that are rollingly connected to the same slide bar 5.1 but are at different heights, refer to Fig.10 A first bracket 6.3 is also provided inside the movable block 6.4. The first bracket 6.3 is used to rotatably connect the wear-reducing rollers 6.5 at different heights to balance the difference in force between them. Fig.10 As shown, in this embodiment, only part of the friction-reducing roller 6.5 is indirectly connected to the movable block 6.4 through the first bracket 6.3. Figure 2 and Figure 3 As shown, the other part of the anti-friction roller 6.5 is directly connected to the movable block 6.4 for rotation and can be directly seen from the outside.

[0047] refer to Figure 4 and Fig. 9 As one embodiment, the screw device 5 also includes a second motor 5.6 and a second reducer 5.7 connected to the output shaft of the second motor 5.6. The second motor 5.6 and the second reducer 5.7 can be arranged outside the cradle connection base 4. The second reducer 5.7 is used to reduce the output speed of the second motor 5.6 and increase the torque. The output shaft of the second reducer 5.7 can extend into the cradle connection base 4. The third gear 5.3 can be installed in the cradle connection base 4. The third gear 5.3 is connected to the output shaft of the second reducer 5.7. The third gear 5.3 drives the fourth gear 5.4 to rotate through the transmission belt 5.5. The fourth gear 5.4 is located in the cradle connection base 4 and is connected to the lifting screw 5.2. The radius of the fourth gear 5.4 is greater than that of the third gear 5.3. The radius difference between the fourth gear 5.4 and the third gear 5.3 is used to increase the torque output to the lifting screw 5.2. As one embodiment, the output shaft of the second reducer 5.7 is connected to the rotation center of the third gear 5.3, and the lifting screw 5.2 is connected to the rotation center of the fourth gear 5.4.

[0048] refer to Figures 1 to 7 As one embodiment, the eccentric gear device 1 also includes a first motor 1.6 and a first reducer 1.7 drivingly connected to the output shaft of the first motor 1.6. The first reducer 1.7 is connected to the first rotating center 1.1.1 of the first eccentric gear 1.1. The first reducer 1.7 is used to reduce the output speed of the first motor 1.6 and increase the torque.

[0049] As one embodiment, both the first reducer 1.7 and the second reducer 5.7 can adopt worm gear reducers. Worm gear reducers have the advantages of self-locking and achieving a large reduction ratio in a small space, which is both safe and space-saving.

[0050] As one embodiment, the first slider 1.4.3 and the second slider 3.2 can use anti-friction steel balls, and the slide groove 4.1 is a circular cross-section groove matching the anti-friction steel balls; or, the slide groove 4.1 is a second slide rail, and the first slider 1.4.3 and the second slider 3.2 are installed on the second slide rail.

[0051] As one of the embodiments, the first fixing seat 1.3 and the second fixing seat 3.3 are fixed on the mounting seat 2, and the first slider 1.4.3 and the second slider 3.2 are respectively inserted into the slide groove 4.1. Since the slide groove 4.1 can prevent the first slider 1.4.3 and the second slider 3.2 from being pulled out, when the cradle drive device is transported, the first slider 1.4.3 and the second slider 3.2 can be used to prevent the cradle connection base 4 from being detached from the mounting seat 2.

[0052] As one example, refer to Figure 1 and Fig.10 The screw device 5 also includes a second frame 5.8, which is located at one end of the slide bar 5.1 and the lifting screw 5.2 that is relatively away from the cradle connection base 4. The second frame 5.8 is connected to the slide bar 5.1, and the second frame 5.8 is also rotatably connected to the lifting screw 5.2. The second frame 5.8 is used to fix the positions of the slide bar 5.1 and the lifting screw 5.2, and the second frame 5.8 is also used to limit the lifting range of the movable block 6.4.

[0053] As one embodiment, a universal interface of the cradle may be provided on the top of the movable block 6.4.

[0054] As one of the embodiments, a control device may be further provided in the mounting seat 2 or the cradle connection base 4. The control device is respectively connected to the first motor 1.6 and the second motor 5.6 by electrical signals. The control device is used to control the output power and sequence of the first motor 1.6 and the second motor 5.6. The control device may also be fitted into a variety of spatial motion trajectory modes according to a predetermined program, imitating different motion trajectory modes such as riding a horse, riding a car, and riding the waves. Users may also preset the motion trajectory modes by themselves.

[0055] In summary, the cradle driving device provided in this embodiment provides a detailed design compared to the second embodiment, thereby improving the rocking effect and safety of the cradle.

[0056] In the drawings provided by the present invention, arrows are used to assist in understanding the pushing direction or moving direction of each component.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0058] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided at", "provided with", "located", "installed", "set", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. "Hinged" includes "rotational connection".

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cradle driving device, characterized in that: include, A cradle connection base (4) used for connecting to the cradle; An eccentric gear device (1), the eccentric gear device (1) being connected to the cradle connection base (4), the eccentric gear device (1) being used to push the cradle connection base (4); A reverse thrust device (3), the reverse thrust device (3) being connected to the cradle connection base (4), the reverse thrust device (3) storing energy when the eccentric gear device (1) pushes the cradle connection base (4), and the reverse thrust device (3) can push the cradle connection base (4) when releasing energy, the direction in which the reverse thrust device (3) pushes the cradle connection base (4) is opposite to the direction in which the eccentric gear device (1) pushes the cradle connection base (4).

2. The cradle driving device according to claim 1, characterized in that: The eccentric gear device (1) comprises a first eccentric gear (1.1) and a second eccentric gear (1.2) meshing with each other, the second eccentric gear (1.2) being connected to the sliding seat (1.4), and the sliding seat (1.4) being used to connect to the cradle connection base (4); the first eccentric gear (1.1) is transmission-connected to a first motor (1.6), and when the first eccentric gear (1.1) and the second eccentric gear (1.2) rotate, the sliding seat (1.4) pushes the cradle connection base (4).

3. The cradle driving device according to claim 2, characterized in that: The eccentric gear device (1) further comprises a first fixed seat (1.3) and a connecting rod (1.5); the sliding seat (1.4) comprises a first sliding member (1.4.1) and a push rod (1.4.2) connected to the first sliding member (1.4.1); the first sliding member (1.4.1) is slidably connected to the first fixed seat (1.3); and the push rod (1.4.2) is used to push the cradle to connect to the base (4); The first rotating center (1.1.1) of the first eccentric gear (1.1) and the second rotating center (1.2.1) of the second eccentric gear (1.2) are connected via the connecting rod (1.5); The first eccentric (1.1.2) of the first eccentric gear (1.1) is rotatably connected to the first fixed seat (1.3), and the first eccentric (1.1.2) is spaced a set distance from the first rotating center (1.1.1); the second eccentric (1.2.2) of the second eccentric gear (1.2) is rotatably connected to the sliding seat (1.4), and the second eccentric (1.2.2) is spaced a set distance from the second rotating center (1.2.1).

4. The cradle driving device according to claim 2, characterized in that: The cradle connection base (4) is provided with a slide groove (4.1); The sliding seat (1.4) comprises a first slider (1.4.3), the first slider (1.4.3) being located in the sliding groove (4.1), the sliding groove (4.1) being used to prevent the first slider (1.4.3) from slipping out along the second direction, and the first slider (1.4.3) being able to slide in the sliding groove (4.1) along the third direction.

5. The cradle driving device according to claim 1, characterized in that: The reverse thrust device (3) comprises a second fixed seat (3.3), a reverse thrust rod (3.1) and an elastic energy storage member (3.5); the elastic energy storage member (3.5) is force-transmittingly connected to the reverse thrust rod (3.1); the elastic energy storage member (3.5) is fixed to the second fixed seat (3.3); and the reverse thrust rod (3.1) is force-transmittingly connected to the cradle connection base (4); When the eccentric gear device (1) pushes the cradle connection base (4), the elastic energy storage member (3.5) stores energy; when the elastic energy storage member (3.5) releases energy, the cradle connection base (4) can be pushed via the reverse thrust rod (3.1).

6. The cradle driving device according to claim 5, characterized in that: The cradle connection base (4) is provided with a slide groove (4.1); The reverse thrust device (3) further comprises a second slider (3.2) connected to the reverse thrust rod (3.1), the second slider being located in the slide groove (4.1), the slide groove (4.1) being used to prevent the second slider (3.2) from escaping in a first direction, and the second slider (3.2) being able to slide in the slide groove (4.1) in a third direction.

7. The cradle driving device according to claim 1, characterized in that: The eccentric gear device (1) and the reverse thrust device (3) are both arranged on a mounting seat (2); The cradle connection base (4) is slidably connected to the mounting seat (2) via a third sliding member (4.2).

8. The cradle driving device according to claim 1, characterized in that: It also includes a screw device (5) and a connecting frame (6); The screw device (5) comprises a slide rod (5.1) connected to the cradle connection base (4) and a lifting screw (5.2) rotatably connected to the cradle connection base (4), and the lifting screw (5.2) is transmission-connected to the second motor (5.6); The connecting frame (6) comprises a movable block (6.4) and a sliding rod sleeve (6.1) and a lead screw sleeve (6.2) respectively connected to the movable block (6.4); the movable block (6.4) is used to be connected to the cradle; the sliding rod sleeve (6.1) is sleeved on the sliding rod (5.1); and the lead screw sleeve (6.2) is threadedly connected to the lifting lead screw (5.2); When the second motor (5.6) drives the lifting screw (5.2) to rotate, the movable block (6.4) rises or falls.

9. The cradle driving device according to claim 8, characterized in that: The movable block (6.4) is sleeved on the plurality of sliding rods (5.1); The connecting frame (6) further comprises a plurality of wear-reducing rollers (6.5), the wear-reducing rollers (6.5) being rotationally connected to the movable block (6.4), and each of the sliding rods (5.1) being respectively rollingly connected to the wear-reducing rollers (6.5).

10. The cradle driving device according to claim 1, characterized in that: The eccentric gear device (1) comprises a first pushing device (11) and a second pushing device (12) whose pushing directions are perpendicular to each other; the reverse thrust device (3) comprises a first reverse thrust device (31) corresponding to the direction of the first pushing device (11) and a second reverse thrust device (32) corresponding to the direction of the second pushing device (12); The first pushing device (11), the first reverse pushing device (31), the second pushing device (12) and the second reverse pushing device (32) are all in sliding contact with the cradle connection base (4) respectively.

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