DK180981B1

DK180981B1 - Energy compensation device and cradle machine

Info

Publication number: DK180981B1
Application number: DKPA202070798A
Authority: DK
Inventors: Chun Quah Yow
Original assignee: Fotogears Trading Guangzhou Ltd
Priority date: 2018-04-28
Filing date: 2020-11-27
Publication date: 2022-08-29
Also published as: DE112018007533T5; CN108703584B; GB2577657B; PH12020551557A1; WO2019205310A1; GB2577657A; UA127207C2; DK202070798A1; CN108703584A; GB202000036D0; AU2018420659A1

Abstract

The invention relates to an energy compensation device and a cradle machine, and an energy compensation device for maintaining continuous movement of the cradle, comprising a compensation driver, a rope-winding drum, a controller, a traction rope, one end of the traction rope is used for connecting with the cradle, and the other end of the rope is connected to the ropewinding drum. The rope-winding drum cooperates with the compensating driver in a transmission manner. The compensation driver is configured to be electrically connected with the controller, and the compensation driver compensates for the energy loss of the cradle by winding the tranction rope by means of rope-winding drum. The controller is used for adjusting the amount of energy compensation that is output by the compensating driver. The energy compensating device solves the problem of the swinging and shaking of a cradle bed manually throughout the baby development process.

Description

Technology field This invention relates to the technical field of infant soothing cradle beds, in particular to an energy compensation device and a cradle machine.

Background technology Human anatomy shows that the fetus of the baby is suspended by the uterus ligament and the muscles and is supported in the lower abdominal cavity of the parent body. When the parent moves, the pregnant uterus can shake and swing up and down along with the movement form and frequency of the body. In this case, the weight of the fetus is sufficient to make the uterus shake and swing all the time along with the growth and development of the fetus until birth. Due to the fact that when the fetus gets away from the parent body, and in addition to the environment changes, the fetus will feel uncomfortable and cry. Due to the fact that the shaking motion feeling which is well known during the baby in the parent abdomen and the living body disappears. In order to soothe the emotion of the baby generally, the baby is placed in the cradle bed, so that the baby has a feeling of returning to the abdomen of the mother.

A common cradle bed will gradually stop after being shaken by hand manually or swinging for a period of time. In order to solve the problem of the cradle bed automatically stopping its swing, the cradle can be continuously vibrate or swing by supplementing the energy to the cradle bed.

One such existing solution is described in CN 204764555 U which discloses an energy compensation device for keeping a cradle in continuous motion, where the device comprises a compensation driver (a motor), a controller and a traction rope, where one end of the traction rope is connected to a cradle, and the other end of the traction rope is connected to the motor, and where the motor is electrically connected to the controller, so that motor compensates for the energy loss of the cradle by moving the traction rope. The controller is used to adjust the energy compensation amount of the output of the motor.

However, due to the unreasonable design of the existing energy compensation device, which is swinging horizontally side to side, the horizontally swinging of the cradle bed can make the baby feel fainting and affect the development of the baby.

The problem addressed by the subject matter of the current invention can be considered to be an alternative construction of an energy compensation device.

Content of the invention

, DK 180981 B1 Based on this, the invention aims to overcome the deficiencies of the prior art and provides an energy compensation device and a cradle machine to resolve the continuous rocking of the cradle bed and for the development of the baby.

An energy compensation device for maintaining continuous movement of a cradle, comprise of a compensation driver, a rope drum, a controller and a traction rope, one end of the traction rope is connected to the cradle, and the other end of the traction rope is connected to the rope drum, the rope drum is coupled to the compensation drive, the compensation driver is electrically connected to the controller, the rope drum reels the traction rope to compensate the energy loss of the cradle and the controller is used for adjusting the energy compensation amount of the compensation driver output. According to the energy compensation device, one end of the traction rope is connected with the rope winding cylinder, the other end of the traction rope is connected with the cradle, the compensation driver is in transmission fit with the rope winding cylinder, and the compensation driver is electrically connected with the controller. When the cradle moves in the traction direction of the traction rope, the compensation driver controls the rope winding drum to take up the traction rope, the traction rope acts on the cradle, and the energy loss of the cradle is compensated. By controlling the compensation driver through the controller, the acting amount of the traction rope on the cradle can be controlled, and then the energy compensation amount of the cradle is controlled. The baby head skull is composed of a plurality of small skull pieces, and the skull is fused into a head skull proportionally with the growth of the baby. The skull of the new-born baby is provided with a plurality of blocks, the skull can move within a certain range, and at the moment, the energy compensation amount output by the compensation driver is adjusted through the controller, so that the cradle shakes or swings in a small range, and the baby bed is prevented from shaking or swinging to influence the head development of the baby. With the growth of the baby, the weight of the baby — isincreased; when the initial energy compensation amount cannot maintain the reciprocating motion of the cradle or the reciprocating motion amplitude cannot meet the requirement for pacifying the baby, the compensation driver is adjusted by the controller to increase the energy of the cradle to enable the cradle to maintain proper reciprocating motion. The compensation driver can be adjusted by the controller to enable the compensation driver to supplement different magnitude of energy to the cradle according to the growth cycle of the baby. Further, the compensation driver includes a first driving motor and a second driving motor, and both the first driving motor and the second driving motor can be coupled with the rope drum, and the first driving motor and the second driving motor are electrically connected to the controller 40 respectively; in the first state, the controller controls the first driving motor or the second driving

2 DK 180981 B1 motor to drive the rope drum to retract the traction rope; in the second state, the controller controls the first driving motor and the second driving motor to drive the rope drum retracts the traction rope. In use, when the baby is born, one of the first or second driving motor can be selected to couple with the rope drive; as the baby grows, the first and second driving motor can be selected.

The first and second driving motors can work at rated torque through stronger magnetic force, avoiding the high cost caused by higher current consumption by the bigger motor. Further, the output power of the first driving motor is less than the output power of the second driving motor. Since the output power of the first driving motor is less than the output power of the second driving motor, the controller can achieve three kinds of energy compensation output, when the baby is born, the controller can select the first driving motor to work; when the baby grows up for a period of time, the controller can select the second driving motor to work; when the baby grows up to a later stage, the controller can select the first and second driving motors to work together, increasing the type of energy compensation output, so that more appropriate energy output compensation can be selected based on the infants growth cycle. Further, the rope drum is in transmission fit with the first driving motor or the second driving motor through a gear. The transmission arrangement structure of the rope drum, the first drive motor and the second drive motor is structurally compact.

The cradle machine comprises the energy compensation device and further comprises a base plate and a hammock mounting frame, wherein the rope drum and the compensating driver are arranged on the base, the hammock mounting frame is arranged at an interval relative to the base plate in the traction direction of the traction rope, a first elastic piece is arranged between the base plate and the hammock mounting frame, and the two ends of the first elastic piece are connected with the base plate and the hammock mounting frame respectively. When the cradle is in use, the cradle mounting frame reciprocates in a direction of being close to or away from the base by the first elastic piece. When the cradle mounting frame moves toward the base, the compensating driver compensates energy to the cradle by pulling the cradle with the traction rope.

Further, there are plurality of first elastic pieces arranged in a circumferential direction around the traction rope. When the cradle is subjected to an external force at an angle with the expansion direction of the first elastic piece, the first elastic piece will restrict each other to reduce the amplitude of the cradle swaying by the external force, thus solving the problem of the large amplitude of the cradle bed swaying under the external influence. It should be pointed out that the traction direction of the traction rope is vertical, and after the horizontal pressure is applied to the cradle bed, the plurality of first elastic pieces can mutually restrain the external force amplitude, thereby ensuring the safety of the baby.

2 DK 180981 B1 Further, a second elastic piece disposed between the base and the cradle mounting frame, and the first elastic piece is disposed around the second elastic part, and two ends of the second elastic piece are respectively connected to the base and the cradle mounting frame. The setting of the second elastic piece increases the loading capacity of the hammock mounting frame hence increase the capacity of baby weight. Further, both ends of the first elastic piece are detachably connected to the base and the cradle mounting frame, and both ends of the second elastic piece are detachably connected to the base and the cradle mounting frame. In use, the number of the first elastic piece and the second elastic piece can be adjusted according to the weight of the baby so that the carrying capacity of the first elastic piece and the second elastic piece can be adapted to the weight of the baby.

Further, the base comprises a first substrate and a second substrate, the first substrate and the second substrate are spaced apart in a tractive direction of the traction rope, both ends of the rope drum are rotatably connected to the first substrate and the second substrate respectively, and the first substrate is equipped with a guide wheel that matches with the traction rope. The setting of the guide wheel limits the movement path of the traction rope and ensures that the rope drum can reel the traction rope normally.

Further, the guide wheel is equipped with a guide groove for a traction rope, and the first substrate is provided with a limit element spaced from the guide wheel, which is coordinated with the traction rope to form a moving channel for restricting the pulse of the traction rope. The limit element limits the movement of the traction rope in the guide groove, thereby preventing the traction rope from jumping out of the guide rope groove.

Description of drawings Figure 1 is a schematic structural diagram of an energy compensation device according to an embodiment of the present invention; Figure 2 is a circuit schematic diagram of a cradle according to an embodiment of the present invention; Figure 3 is a schematic structural view of a cradle according to an embodiment of the present invention; Figure 4 is a partial enlarged view of A in Figure 3; Figure 5 is a schematic structural view of a rope drum according to an embodiment of the present invention.

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: DK 180981 B1 Brief description of the drawings 100, Base, 101, First Substrate, 102, Second Substrate, 110, First Mounting Portion, 111, First Mounting Arm, 112, First Hook Body, 113, First Elastic Hook Shank, 114, First Hooking Inlet, 120, Third Connecting Portion, 130, Rope-winding drum, 130 a, Third Gear, 131, Accommodating Cavity, 132, Elastic tensioner, 132 a, Coil Spring, 132 b, Inner Ring Connecting End, 132 c, Outer Ring Connecting End, 133, Shaft, 133 a, Shaft Slot, 134, Rope-winding drum body, 135, First Rope End Cover, 136, Second Rope End Cover, 140, Traction Rope, 150, Compensation Driver, 151, First Drive Motor, 151 a, First Gear, 152, Second Drive Motor, 152 a, Second Gear, 160, Controller, 180, Guide wheel, 181, guide groove, 200, cradle mounting frame, 210, second mounting portion, 220, fourth connecting portion, 310, first elastic piece, 311, first elastic piece 311A, 312, first elastic piece 312B, 313, first elastic piece 313C, 314, first elastic piece 314D, 315, first elastic piece 315E, 316, first elastic piece 316F, 311, first hanging ring, 320, second elastic piece, 321, second hanging ring, 400, detector, 420, detecting motor. Specific Implementation Methods In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings below. Better embodiments of the present invention are shown in the drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the present invention. It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on another element or exist in the centre of the element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or exist in the centre of the element. Contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein, are only for illustrative purpose and are not intended to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the technical field of the present invention. The terminology used in the description of the present invention in this article is for the purpose of describing specific embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more related listed items. Combination of figure 1 and 2, an embodiment of the present invention provides an energy compensation device for maintaining continuous movement of a cradle, the characteristic is that it comprise of a compensation driver 150, a rope-winding drum 130, a controller 160 and a traction 40 rope 140, one end of the traction rope 140 is connected to the cradle, and the other end of the

. DK 180981 B1 traction rope 140 is connected to the rope-winding drum 130, the rope-winding drum 130 is coupled to the compensation drive 150, the compensation driver 150 is electrically connected to the controller 160, the compensation driver 150 compensates for the energy loss of the cradle by winding the traction rope 140 through the rope-winding drum 130. The controller 160 is used to adjust the energy compensation amount of the output of the compensation driver 150. When the above energy compensation device is in use, one end of the traction rope 140 is connected to the rope-winding drum 130, and the other end of the traction rope 140 is connected to the cradle, the compensation driver 150 coupled with the rope-winding drum 130 and the compensation driver 150 is electrically connected to the controller 160. When the cradle moves along the traction direction of the traction rope 140, the compensation driver 150 controls the rope-winding drum 130 to wind the traction rope 140, and the traction rope 140 works on the cradle to compensate for the energy loss of the cradle.

Through the controller's 160 control of the compensation driver 150, the work done by the traction rope 140 to the cradle is controlled, thereby controlling the energy compensation amount of the cradle.

The skull of a baby after birth is composed of multiple small skulls.

As the baby grows, the skull fuse into one skull.

There are many skulls in the new-born, and multiple skulls can move within a certain range.

At this time, the controller 160 regulates the energy compensation output of the compensating driver 150, enable the cradle shake or swing in a small range, thereby avoiding the influence of the crib shake or swing on the infant's head development.

As the baby grows, the baby's weight increases.

When the initial energy compensation output cannot maintain the cradle reciprocating motion or the amplitude of reciprocating motion cannot comfort the baby, the controller 160 adjusts the compensation driver 150 to increase the compensation energy to the cradle so that the cradle can maintain proper reciprocating motion.

The adjustment of the compensation driver 150 by the controller 160 enables the compensation driver to supplement the cradle with different magnitudes of energy according to the baby's growth cycle, so as to reduce the jitter or swing amplitude of the cradle reciprocating motion.

When the above-mentioned cradle moves in the pulling direction of the traction rope 140, the compensation driver 150 controls the rope-winding drum 130 to reel the traction rope 140, and the traction rope 140 performs work on the cradle.

It should be noted that, in order to ensure the traction rope 140 works on the cradle, the traction direction of the traction rope 140 and the cradle movement can be inconsistent, and the directions of the two can be acute.

Further, the compensation driver 150 includes a first driving motor 151 and a second driving motor 152, and both the first driving motor 151 and the second driving motor 152 is coupled with the rope- winding drum 130, and the first driving motor 151 and the second driving motor 152 are electrically connected to the controller 160 respectively; in the first state, the controller 160 controls the first driving motor 151 or the second driving motor 152 to drive the rope-winding drum 130 to retract the traction rope; in the second state, the controller 160 controls the first driving motor 151 and the 40 second driving motor 152 to drive the rope-winding drum 130 retracts the traction rope.

In use,

, DK 180981 B1 when the baby is born, one of the first driving motor 151 or second driving motor 152 can be selected to couple with the rope-winding drum 130; as the baby grows, the first drive motor 151 and second driving motor 152 can be selected. The first drive motor 151 and second driving motor 152 can work at rated power, avoiding the high cost caused by frequency conversion regulation.

It should be noted that, in other embodiments, the compensation driver 150 can be a variable frequency driving motor, and the controller 160 controls the variable frequency motor to achieve different compensation energy outputs.

Further, the output power of the first driving motor 151 is less than the output power of the second driving motor 152. Since the output power of the first driving motor 151 is less than the output power of the second driving motor 152, the controller 160 can achieve three kinds of energy compensation output, when the baby is born, the controller 160 can select the first driving motor 151 to work; when the baby grows up for a period of time, the controller 160 can select the second driving motor 152 to work; when the baby grows up to a later stage, the controller 160 can select the first drive motor 151 and second driving motor 152 to work, increasing the type of energy compensation output, so that more appropriate energy output compensation can be selected based on the infants growth cycle.

Further, the rope-winding drum 130 is coupled to the first driving motor 151 or the second driving motor 152 by gear rotation. The way in which the gears coupled with the rope-winding drum 130 makes the structure of the rope drum, the first drive motor 151 and second driving motors 152 more compact.

Further, with reference to figure 2, the energy compensation device also includes a detector 400, which is electrically connected to the controller 160 for detecting the motion state of the cradle mounting frame 200; when the cradle mounting frame 200 moves along the traction direction of the traction rope 140, the controller 160 controls the compensation driver 150 to drive the rope-winding drum 130 to wind the traction rope 140; when the cradle mounting frame 200 moves in the opposite direction of the traction rope 140, the controller 160 controls the compensation driver 150 to drive the rope-winding drum 130 to release the traction rope. Through detector 400, the compensation driver 150 can accurately compensate the jitter energy of cradle mounting frame 200, so that the cradle mounting frame 200 can maintain a certain amplitude of reciprocating motion.

Specifically, in the embodiment, with reference to figure 2, the output terminal of the first driving motor 151 is provided with a first gear 151a, the output terminal of the second driving motor 152 is provided with the second gear 152a, and the rope-winding drum 130 is provided with the third gear 130a meshing with the first gear 151a and the second gear 152a. The detector 400 includes a fourth gear (not shown in the drawing) and a detection motor 420 which is electrically connected to the 40 controller 160. The fourth gear is disposed on the rotating shaft of the detection motor 420, and the

2 DK 180981 B1 fourth gear meshes with the third gear 130a. The controller 160 determines the rotation direction of the first driving motor 151 or the second driving motor 152 by detecting the positive inversion of the detecting motor 420.

With reference to Figure 3, this invention further provide a cradle, which includes an energy compensation device, a base 100 and a cradle mounting frame 200, wherein the rope-winding drum 130 and a compensation driver 150 are disposed on the base 100. The cradle mounting frame 200 is spaced apart from the base 100 along the traction direction of the traction rope 140 relative to the base, and the first elastic piece 310 is disposed between the base 100 and the cradle mounting frame 200, and the two ends of the first elastic piece 310 are connected with the base 100 and cradle mounting frame 200 respectively. When the cradle is in use, the cradle mounting frame 200 reciprocates in a direction of being close to or away from the base by the first elastic piece 310. When the cradle mounting frame 200 moves toward the base 100, the compensating driver 150 compensates energy to the cradle by pulling the cradle with the traction rope 140.

Further, the cradle has a plurality of first elastic piece 310 and is circumferentially disposed around the traction rope 140. The plurality of first elastic piece 310 are disposed around the traction rope 140, when the cradle is subjected to an external force at an angle with the expansion direction of the first elastic piece 130, the first elastic piece 130 will restrict each other to reduce the amplitude of the cradle swaying by the external force, thus solving the problem of the large amplitude of the cradle bed swaying under the external influence. It should be pointed out that the traction direction of the traction rope 140 is vertical, and after the horizontal pressure is applied to the cradle bed, the plurality of first elastic pieces 310 can mutually restrain the vibration amplitude, thereby ensuring the safety of the baby.

Further, a second elastic piece320 is disposed between the base 100 and the cradle mounting frame 200, and the first elastic piece 310 is disposed around the second elastic piece320, and two ends of the second elastic piece320 are respectively connected to the base 100 and the cradle mounting frame 200. The setting of the second elastic piece320 increases the loading capacity of the cradle mounting frame 200. Further, both ends of the first elastic piece 310 are detachably connected to the base 100 and the cradle mounting frame 200, and both ends of the second elastic piece320 are detachably connected to the base 100 and the cradle mounting frame 200. In use, the number of the first elastic piece 310 and the second elastic piece320 can be adjusted according to the weight of the baby so that the carrying capacity of the first elastic piece 310 and the second elastic piece320 can be adapted to the weight of the baby. Specifically, in this embodiment, there are six first mounting portion 110 and a third connection 40 portion 120 on the base 100, and the cradle mounting frame 200 has six second mounting portion

2 DK 180981 B1 210 corresponding to the first mounting portion 110 and a fourth connection portion 220 corresponding to the third connection portion 120; both ends of the first elastic piece 310 which connected to the first mounting portion 110 and second mounting portion 210 are detachable, both ends of the second elastic piece 320 which connected to the second mounting portion 210 and fourth connection portion 220 are detachable.

Specifically, in this embodiment, the six first elastic pieces 310 which correspondingly connected to the six first mounting portion 110 and six second mounting portion 210 are respectively the first elastic piece 311A, the first elastic piece 312B, the first elastic piece 313C, the first elastic piece 314D, the first elastic piece 315E, the first elastic piece 316F, and the first elastic piece 311A, the first elastic piece 312B, the first elastic piece 313C, the first elastic piece 314D, the first elastic piece 315E and the first elastic piece 316F which are sequentially disposed at interval around the traction rope 140; A second elastic piece 320 is correspondingly connected to the third connecting portion 120 and the fourth connecting portion 220 mentioned above.

When the number of elastic parts required is three, the connection between the three first mounting portion 110 and the three second mounting portions 210 is achieved by selecting the first elastic piece 311A, the first elastic piece 313C and the first elastic piece 315E; Or the first elastic piece 312B, the first elastic piece 314D and the first elastic piece 316F are selected to realize the connection of the three first mounting portion 110 and the three second mounting portion 210 at corresponding positions. It should be noted that that the purpose of the selection methods is to ensure the cradle mounting frame 200 bear forces evenly. The means to achieve this goal is to select three first elastic pieces 310 which are not adjacent to the six first elastic piece 310 to connect with the first mounting portion 110 and the second mounting portions 210.

When the number of elastic parts required is four, the combination of three first elastic pieces 310 and second elastic pieces 320 is adopted. The selection method of the three elastic parts can be referred to the above-mentioned selection method of “the number of elastic part is three”. Alternatively, we can use the following method to select four first elastic pieces 310.

When the number of elastic parts required is five, the combination of the four first elastic pieces 310 and the second elastic pieces 320 is adopted. The four elastic parts are selected as below: the first elastic piece 311A, the first elastic piece 312B, the first elastic piece 314D, and the first elastic piece 315E are selected to realize the connection of the four first mounting portion 110 and four second mounting portions 210 at corresponding positions; or selection of the first elastic piece 312B, the first elastic piece 313C, the first elastic piece 315, and the first elastic piece 316F to realize the connection of the four first mounting portion 110 and the four second mounting portions 210 at corresponding positions; or selection of the first elastic piece 311A, the first elastic piece 313C, the first elastic piece 314D and the first elastic piece 316F to realize the connection of the corresponding 40 positions of the four first mounting portion 110 and the four second mounting portions 210. It should

10 DK 180981 B1 be noted that the purpose of the three selection methods is to ensure the cradle mounting frame 200 bear forces evenly, to achieve this goal, two groups of first elastic piece 310 are selected and each group of the first elastic piece 310 includes two corresponding first elastic piece 310. When the number of elastic parts required is six, six first elastic pieces 310 are selected. When the number of elastic parts required is seven, a combination of six first elastic piece 310 and a second elastic piece 320 is adopted.

Further, the base 100 comprises a first substrate 101 and a second substrate 102, the first substrate 101 and the second substrate 102 are spaced apart in a tractive direction of the traction rope 140, both ends of the rope-winding drum 130 are rotatably connected to the first substrate 101 and the second substrate 102 respectively, and the first substrate 101 is equipped with a guide wheel 180 that matches with the traction rope 140. The setting of the guide wheel 180 limits the movement path of the traction rope 140 and ensures that the rope-winding drum 130 can reel the traction rope 140 normally.

Specifically, on the first substrate 101, there are several first mounting portion 110 corresponding to the first elastic piece 310, the first elastic piece 310 is hooked to the first mounting portion 110, on the first substrate 102, there is second mounting portions 210 corresponding to the second elastic piece 320, the second elastic piece 320 is hooked to the second mounting portion 210 correspondingly.

With reference to figure 4, the first mounting portion 110 includes a first hook body 112, and two ends of the first hook body 112 are respectively provided with a first mounting arm 111 and a first elastic hook shank 113, the first elastic hook shank 113, which is extend outward from the first hook body 112, form the first hooking inlet 114 with the first mounting arm 111. The first mounting arm 111 is screwed mounted on the first substrate 101. The first elastic piece 310 is provided with a first hanging ring 311 which is connected to the first hook 112, and the first elastic piece 310 is hooked onto the first hook body 112 through the first hanging ring 311. The third connecting portion 120 includes a second hook body, and two ends of the second hook body are respectively provided with a second mounting arm and a second elastic hook shank, the second elastic hook shank, which is extend outward from the second hook body, form the first hanging hook inlet with the second mounting arm. The second mounting arm is on the first substrate 101. The second elastic piece 320 is provided with a first hanging ring 321 which is connected to the second hook, and the second elastic piece 320 is hooked onto the second hook through the second hanging ring 321. Specifically, the cradle mount frame 200 is provided with a plurality of third connecting portions 120 correspondingly connected to the first elastic piece 310, and the first elastic piece 310 is hooked and

1 DK 180981 B1 connected with the third connecting portion 120. The cradle is provided with a fourth connecting portion 220 correspondingly connected to the second elastic piece 320.

Further, the rope-winding drum 130 is provided with a accommodating cavity 131, the inner wall of the accommodating cavity 131 is provided with a through hole for shaft 133, and the accommodating cavity 131 is housed with a coil spring 132, one end of the coil spring 132 is connected to the inner wall of the rope-winding drum 130, and the other end of the coil spring 132 is connected to the shaft slot 133a.

A shaft 133 is placed between the first substrate 101 and the second substrate 102, and the rope- winding drum 130 is rotatably sleeved on the shaft 133.

With reference to figure 5, the rope-winding drum 130 includes a rope-winding drum body 134, and the rope-winding drum body 134 is sleeved on the shaft 133, two ends of the rope-winding drum body 134 are respectively provided with a first rope end cover 135 and second rope end cover 136, the first rope end cover 135 and the second rope end cover 136 are provided with a through hole, the through hole is disposed on the rope-winding drum body 134, the rope-winding drum body 134, the first rope end cover 135 and the second rope end cover 136 are surrounding the accommodating cavity 131.

The elastic tensioner 132 is a coil spring 132a, and the shaft 133 has a shaft slot 133a. The inner ring end point 132b of the coil spring 132a is installed in the shaft slot 133a, and the outer ring end point 132c of the coil spring 132a is connected to the inner wall of the rope-winding drum body 134.

Further, the guide wheel 180 is equipped with a guide groove 181 for a traction rope 140, and the first substrate 101 is provided with a limited element spaced from the guide wheel 180, which is coordinated with the traction rope 140 to form a moving channel for restricting the traction rope 140 from dropout. The limited space limits the movement of the traction rope in the guide groove 181, thereby preventing the traction rope 140 from jumping out of the guide groove 181.

It should be noted that, in this embodiment, the first elastic piece 310 and the second elastic piece 320 both are tension springs. In other embodiments, the first elastic piece 310 and the second elastic piece 320 could be elastic ropes of a rubber band type.

The technical features of the above-mentioned embodiments may be arbitrarily combined. For the sake of brevity description, all possible combinations of the technical features in the above- mentioned embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, it should be considered as the scope of the present description.

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2 DK 180981 B1 The above-mentioned embodiments only express several embodiments of the invention, which are described in more detail, but should not be understood as restrictions on the scope of invention patents.

It should be noted that for ordinary technicians in the field, a number of modifications and improvements can be made without departing from the concept of the present invention, which belong to the scope of protection of the present invention.

Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims

DK 180981 B1 13 Patent claim

1. An energy compensation device for keeping a cradle in continuous motion, where the energy compensation device comprises a compensation driver (150), a control unit (160) and a drawbar (140), where the compensation driver (150) is electrically connected to the control unit (160) ) and where the control unit (160) is used to adjust the energy compensation amount of the output of the compensation driver (150), characterized in that the energy compensation device further comprises a rope winding drum (130) where one end of the traction rope (140) can be connected to a cradle, and the other end of the traction rope (140) is connected to the rope winding drum (130), where the rope winding drum (130) is coupled to the compensation driver (150), where the compensation driver (150), when in use, compensates for the energy loss of the cradle by to wind the traction rope (140) through the rope winding drum (130).

2. The energy compensation device according to claim 1, where the compensation driver (150) comprises a first drive motor (151) and a second drive motor (152), where the first drive motor (151) and the second drive motor (152) are transmission-connected with the rope winding drum (130), and the first drive motor (151) and the second drive motor (152) are each electrically connected to the control unit (160); wherein the control unit (160) in a first state controls the first drive motor (151) or the second drive motor (152) to drive the rope winding drum (130) to take up and release the traction rope (140);

DK 180981 B1 14 where the control unit (160) in another state controls both the first drive motor (151) and the second drive motor (152) to drive the rope winding drum (130) to take up and release the pull rope (140).

3. The energy compensation device according to claim 2, where the output power of the first drive motor (151) is less than the output power of the second drive motor (152).

4, The energy compensation device according to claim 2, wherein the rope winding drum (130) is transmission-connected to a first drive motor (151) or a second drive motor (152) through a gear.

5. The energy compensation device according to claim 1, further comprising a camera for recording a baby status image, an image analyzer electrically connected to a camera head on the camera, where the image analyzer is used to sort the obtained baby status image, and a memory electrically connected to the image analyzer, where the memory is used for further processing of the image data.

6. The energy compensation device according to claim 5, further comprising a wireless communicator, where the wireless communicator is in signal connection with the camera and arranged to be in communication with a mobile terminal.

7. Cradle machine comprising an energy compensation device according to any one of claims 1-6, characterized in that the energy compensation device comprises a base (100) and a cradle mounting frame (200), where the cradle mounting frame (200) is separated from the base (100) in a space along the direction of the draw belt (140), and where a first

DK 180981 B1 15 elastic element (310) is placed between the base (100) and the cradle mounting frame (200), where two ends of the first elastic element (310) are respectively connected to the base (100) and the cradle mounting frame (200).

8. The cradle machine according to claim 7, further comprising a plurality of first elastic elements, and where this plurality of first elastic elements is arranged around the draw cord (140).

9. The cradle machine according to claim 8, where a second elastic element (320) is arranged between a base plate and the cradle mounting frame (200), where the first elastic elements are arranged around the second elastic element (320), and two ends of the second elastic member is connected to the base (100) and the cradle mounting frame, respectively.

10. Cradle machine according to claim 9, where the two ends of the first elastic element are removably connected to the bottom plate and the cradle mounting frame (200), where the two ends of the second elastic element (320) are removably connected to the base (100) and a cradle mounting stand.

11. Cradle machine according to claim 8, where the base comprises a first base plate and a second base plate, where the first base plate and the second base plate are placed between the rope winding drum (130), where the two sides of the rope winding drum (130) are connected to respectively the first base plate and the second base plate with a shaft (133).

12. Cradle machine according to claim 11, where a guide wheel (180) is provided with a guide groove space (181) for the traction belt (140), and where the first bottom plate is provided with a

DK 180981 B1 16 confining space from the guide wheel (180) which is coordinated with the traction belt (140) to form a movement channel to prevent the traction belt (140) from jumping out.