A delivery assistance device

Abstract

The present invention discloses a delivery assisting device, comprising: a base; a movable seat, wherein a telescopic rod is connected to the bottom side, and a limit frame is arranged on the top side, wherein the bottom end of the telescopic rod is connected to the base, and the limit frame is arranged to form a limit space with an opening upward; a lifting mechanism, which is arranged on the top side of the base, and the lifting mechanism has a lifting rod that can move up and down, and the lifting rod abuts against the bottom side of the movable seat, and there are multiple lifting mechanisms in a circular array around the telescopic rod; a driving mechanism, which is arranged on the base and can drive the multiple lifting rods to move up and down respectively. The present invention can better assist pregnant women to move in the up and down directions on the doula ball, reduce the work intensity of the doula trainer, and is beneficial to improving the effect of accelerating the delivery process and promoting the descent of the fetal head by the doula ball.

Description

Technical Field

[0001] The invention relates to a medical device, in particular to a delivery assisting device. Background Art

[0002] Delivery assist devices are mainly used by pregnant women. They can help pregnant women relax their pelvis, promote the descent of the fetal head, and accelerate the delivery process. Currently, when pregnant women use delivery assist devices, they usually need a doula to assist them. For example, when a pregnant woman sits on a doula ball, the doula needs to support the pregnant woman with both hands on both sides of her waist behind her to assist her in moving on the doula ball. However, for pregnant women with poor physical strength, their range of movement on the doula ball is limited, and they need to rely more on the doula to assist in movement. This increases the workload of the doula. Therefore, there is an urgent need for a device that can easily assist pregnant women in pre-delivery exercises. Summary of the invention

[0003] The purpose of the present invention is to provide a delivery assistance device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the present invention to solve its technical problem is:

[0005] A delivery assist device comprises: a base; a movable seat, the bottom side of which is connected to a telescopic rod, and the top side is provided with a limit frame, the bottom end of the telescopic rod is connected to the base, and the limit frame is surrounded by a limit space with an opening upward; a lifting mechanism, which is arranged on the top side of the base, and the lifting mechanism has a lifting rod that can move up and down, the lifting rod abuts against the bottom side of the movable seat, and the lifting mechanism is arranged in a circular array around the telescopic rod; a driving mechanism, which is arranged on the base and can drive the multiple lifting rods to move up and down respectively.

[0006] This technical solution has at least the following beneficial effects: when in use, the doula ball is placed in the limited space surrounded by the limit frame, and the bottom position of the doula ball is limited by the limit frame. The pregnant woman sits on the doula ball, and when it is necessary to assist the pregnant woman in training activities, the driving mechanism drives multiple lifting rods to move upward and downward at the same time, thereby lifting or lowering the doula ball. This can better assist the pregnant woman to move up and down on the doula ball, reduce the work intensity of the doula trainer, and help improve the effect of the doula ball in accelerating the labor process and promoting the descent of the fetal head.

[0007] As a further improvement of the above technical solution, the driving mechanism includes a driving motor, a turntable and a protrusion, the driving motor is connected to the base, the turntable is rotatably connected to the base, the driving motor is transmission-connected to the turntable, the rotation axis of the turntable is located on the telescopic rod, the bottom ends of multiple lifting rods are respectively against the top side of the turntable, and two protrusions are symmetrically arranged on the top side of the turntable along the rotation axis of the turntable. The driving motor drives the turntable to rotate and causes the two protrusions to push the two lifting rods upward respectively. During normal use, since the bottom end of the lifting rod is against the top side of the turntable, the turntable stably supports the movable seat through multiple lifting rods. When the movable seat needs to be lifted upward, the driving motor drives the turntable to rotate. When the turntable drives the two protrusions on its top side to move to the bottom ends of the two lifting rods, the two protrusions can lift the movable seat upward through the two lifting rods, thereby assisting the pregnant woman on the doula ball to move upward. When the two protrusions move away from the two lifting rods, the two lifting rods are pressed on the turntable again, thereby assisting the pregnant woman on the doula ball to move downward. In this way, as the turntable keeps rotating, the two protrusions continuously lift and lower the lifting rods arranged in a circle, thereby assisting the pregnant woman to move up and down.

[0008] As a further improvement of the above technical solution, the lifting mechanism includes a sliding sleeve connected to the top side of the base, and the lifting rod and the sliding sleeve are connected in cooperation with each other. By using the cooperation between the lifting rod and the sliding sleeve, the lifting rod can slide stably in the up and down directions. The overall structure is simple. The lifting rod is lifted upward under the upward pressure of the protrusion, and the lifting rod is lowered under the downward pressure of the movable seat.

[0009] As a further improvement of the above technical solution, a universal joint is arranged between the top end of the telescopic rod and the bottom side of the movable seat, the turntable includes a disc body, a gear lever and a translation drive member, the disc body is rotatably connected to the base, the drive motor is transmission-connected to the disc body, an avoidance groove is arranged on the top side of the disc body, the gear lever is slidably connected in the avoidance groove, the translation drive member is connected to the disc body, the two protrusions are respectively connected to the top sides of the two ends of the gear lever, the length of one of the protrusions along the length direction of the gear lever is greater than the length of the other protrusion along the length direction, the translation drive member can drive the gear lever to move along the length direction of the avoidance groove, and make the two protrusions respectively face the two lifting rods or the protrusion with a longer length faces one lifting rod. When in use, you can also select only one protrusion to lift the lifting rod opposite to it according to the needs of use. Specifically, when the doula ball needs to assist the pregnant woman to move up and down smoothly, the translation drive component drives the shift rod to move toward one side of the avoidance groove, so that the two protrusions are respectively opposite to the two lifting rods. At this time, when the turntable rotates until its two protrusions are respectively opposite to the two lifting rods, the two lifting rods can be lifted upward smoothly. When it is necessary to lift the doula ball on one side, the translation drive component drives the shift rod to move along the other side of the avoidance groove. Since the length of one protrusion is greater than that of the other protrusion, when the shift rod moves, the length is larger at this time. The protrusion will also be directly opposite to the lifting rod, while the protrusion with shorter length will be staggered with the lifting rod. In this way, the protrusion with longer length will also lift up one lifting rod. At this time, the movable seat is lifted up on one side, so that the doula ball is lifted up from one side. When the turntable drives the protrusion with longer length to leave the lifting rod, the lifted part of the movable seat will be put down, so that the doula ball returns to its original state. In this way, the turntable continues to rotate, and the protrusion with longer length can be used to lift up the lifting rods passing by one by one, so that the doula ball is lifted up in turn at different positions. In this way, pregnant women can control the way of lifting the doula ball upward according to their needs, greatly improving the use experience.

[0010] As a further improvement of the above technical solution, the lifting mechanism also includes a first spring, the first spring is sleeved on the outside of the sliding sleeve, and a limit shoulder is formed on the outside of the top of the lifting rod. The upper and lower ends of the first spring are respectively against the limit shoulder and the top side of the base. In the two lifting rods symmetrical with the telescopic rod, when one lifting rod is facing the longer protrusion, the other lifting rod is facing the avoidance groove. When it is necessary to lift the doula ball upward from a unilateral position, for the two lifting rods symmetrically arranged with the telescopic rod, the longer protrusion is facing one lifting rod, and the shorter protrusion is facing the avoidance groove. When the protrusion lifts one lifting rod, the other lifting rod goes down into the avoidance groove. The avoidance groove provides a space for avoidance and accommodation, so that multiple lifting rods can be kept supporting the movable seat at the same time, improving the stability of the movable seat when it is lifted from a unilateral direction.

[0011] As a further improvement of the above technical solution, the two protrusions are connected to the top surface of the turntable in a smooth transition. When the turntable rotates until the protrusion is directly opposite to the bottom of the lifting rod, the lifting rod can be smoothly moved upwards due to the smooth transition between the protrusion and the top surface of the turntable, and then the lifting rod can be smoothly lowered along the protrusion, which can improve the user experience of lifting the doula ball up and down.

[0012] As a further improvement of the above technical solution, the bottom side of the turntable is rotatably connected to the inner bottom side of the base, the drive motor is fixed to the top side of the base, the output end of the drive motor extends into the base, and a synchronous belt is connected between the output end of the drive motor and the outer side of the disk body. The drive motor transmits the power to the turntable through the synchronous belt, thereby driving the turntable to rotate. Since the turntable is rotatably connected to the base, the inner bottom side of the base itself can be used to stably support the turntable, greatly improving the stability of the turntable when rotating.

[0013] As a further improvement of the above technical solution, the bottom ends of the multiple telescopic rods are respectively connected to pulleys. The multiple telescopic rods move relatively on the turntable through the pulleys. The pulleys can reduce rolling friction between the turntable and the telescopic rods, thereby improving the smoothness of the relative displacement of the telescopic rods on the turntable.

[0014] As a further improvement of the above technical solution, a spherical connector is formed at the top of the lifting rod, and a limiting hole is provided at the bottom side of the movable seat opposite to the spherical connector, and the spherical connector is connected in the limiting hole. The top of the lifting rod is connected in a matching manner with the limiting hole through the spherical connector, and when the movable seat is lifted to a relative deflection with the lifting rod, the spherical connector can also maintain contact support with the limiting hole, thereby improving the stability of the movable seat support.

[0015] As a further improvement of the above technical solution, an armrest is provided on the base beside the movable seat. When using the device, a pregnant woman can place her hands on the armrest to assist in overall support, thereby further improving safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0017] Figure 1 It is an overall stereogram of the present invention.

[0018] Figure 2 It is an overall top view of the present invention.

[0019] Figure 3 yes Figure 2 Schematic diagram of the internal structure of the AA section.

[0020] Figure 4 It is a schematic diagram of the internal structure of Embodiment 1 of the present invention for assisting pregnant women to move on a doula ball.

[0021] Figure 5 It is a schematic diagram of the internal structure of Embodiment 2 of the present invention for assisting pregnant women to move on a doula ball.

[0022] In the accompanying drawings: 100-base, 200-movable seat, 210-telescopic rod, 211-universal joint, 212-pulley, 220-limiting frame, 310-lifting rod, 311-limiting shoulder, 312-spherical connector, 320-driving motor, 331-disk, 332-gear lever, 333-translational driving member, 334-avoidance groove, 335-synchronous belt, 340-bump, 350-sleeve, 360-first spring, 400-armrest. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figures 1 to 3 A delivery assist device comprises a base 100, a movable seat 200, a lifting mechanism and a driving mechanism, wherein a telescopic rod 210 is connected to the bottom side of the movable seat 200, a limit frame 220 is arranged on the top side of the movable seat 200, the bottom end of the telescopic rod 210 is connected to the base 100, and the limit frame 220 is surrounded to form a limit space opening upward; the lifting mechanism is arranged on the top side of the base 100, and the lifting mechanism has a lifting rod 310 that can move up and down, the lifting rod 310 is against the bottom side of the movable seat 200, and there are multiple lifting mechanisms in a circular array around the telescopic rod 210; the driving mechanism is arranged on the base 100, and the driving mechanism can drive the multiple lifting rods 310 to move up and down respectively.

[0028] As can be seen from the above, when in use, the doula ball is placed in the limited space surrounded by the limit frame 220, and the bottom position of the doula ball is limited by the limit frame 220. The pregnant woman sits on the doula ball. When it is necessary to assist the pregnant woman in training activities, the driving mechanism drives multiple lifting rods 310 to move upward and downward at the same time, thereby lifting or lowering the doula ball. This can better assist the pregnant woman to move up and down on the doula ball, reduce the work intensity of the doula trainer, and help improve the effect of accelerating the labor process and promoting the descent of the fetal head through the doula ball.

[0029] The driving mechanism is mainly used to provide a driving force for the lifting rod 310 to reciprocate in the up and down directions. There are various structural forms. For example, the driving mechanism includes multiple independent lifting driving sources, such as a cylinder, a hydraulic cylinder or an electric screw. The multiple lifting driving sources are respectively connected to the multiple lifting rods 310, thereby driving the multiple lifting rods 310 to move up and down respectively. In this embodiment, the driving mechanism includes a driving motor 320, a turntable and a protrusion 340. The driving motor 320 is connected to the base 100, and the turntable is rotatably connected to the base 100. The driving motor 320 is transmission-connected to the turntable. The rotation axis of the turntable is located on the telescopic rod 210. The bottom ends of the multiple lifting rods 310 are respectively against the top side of the turntable. The protrusions 340 are symmetrically arranged on the top side of the turntable along the rotation axis of the turntable. The driving motor 320 drives the turntable to rotate and causes the two protrusions 340 to push the two lifting rods 310 upward respectively.

[0030] like Figure 4As shown in the figure, as an embodiment 1 to assist pregnant women to move on the doula ball, the two protrusions 340 simultaneously push up the two lifting rods 310 to assist the pregnant women to move up and down. In normal use, since the bottom ends of the lifting rods 310 are against the top side of the turntable, the turntable stably supports the movable seat 200 through multiple lifting rods 310. When the movable seat 200 needs to be lifted up, the driving motor 320 drives the turntable to rotate, and the turntable drives the two protrusions 340 on its top side to move to the two lifting positions. When the rod 310 is at the bottom, the two protrusions 340 can push the movable seat 200 upwards through the two lifting rods 310, thereby assisting the pregnant woman on the doula ball to move upwards. When the two protrusions 340 move away from the two lifting rods 310, the two lifting rods 310 are pressed on the turntable again, thereby assisting the pregnant woman on the doula ball to move downwards. In this way, as the turntable keeps rotating, the two protrusions 340 continuously push up and lower the lifting rods 310 arranged in a circle, thereby assisting the pregnant woman to move up and down.

[0031] The lifting rod 310 can be directly arranged on the top side of the base 100 through the shaft hole, so as to realize the up and down movement of the lifting rod 310. In order to improve the sliding stability of the lifting rod 310, in this embodiment, the lifting mechanism includes a sliding sleeve 350 connected to the top side of the base 100, and the lifting rod 310 and the sliding sleeve 350 are connected with each other. By using the mutual cooperation between the lifting rod 310 and the sliding sleeve 350, the lifting rod 310 can be stably slid in the up and down direction. The overall structure is simple. The lifting rod 310 is lifted upward under the upward pressure of the protrusion 340, and the lifting rod 310 is lowered under the downward pressure of the movable seat 200.

[0032] like Figure 5As shown, as a second embodiment of assisting pregnant women to move on the doula ball, a convex block 340 lifts the lifting rod 310 to assist pregnant women to move up and down. Specifically, a universal joint 211 is arranged between the top of the telescopic rod 210 and the bottom side of the movable seat 200, and the turntable includes a disk body 331, a gear rod 332 and a translation driving member 333. The disk body 331 is rotatably connected to the base 100, and the driving motor 320 is transmission-connected to the disk body 331. The top side of the disk body 331 is provided with an avoidance groove 334, and the gear rod 332 is slidably connected to the avoidance groove 334. The translation driving member 333 is connected to the disk body 331. The main function of the translation driving member 333 is to drive the gear rod to translate and reciprocate. There are various structural forms, such as a cylinder, an electric screw and a hydraulic cylinder, etc. The two convex blocks 340 are respectively connected to the gear rods 332 and 333. At the top sides of both ends of the rod 332, the length of one of the protrusions 340 along the length direction of the shift rod 332 is greater than the length of the other protrusion 340 along the length direction. The translation drive member 333 can drive the shift rod 332 to move along the length direction of the avoidance groove 334, and make the two protrusions 340 respectively face the two lifting rods 310 or the protrusion 340 with a longer length faces one lifting rod 310. When the two protrusions 340 are required to lift the two lifting rods 310 at the same time, the translation drive member 333 drives the shift rod 332 to move until the two protrusions 340 face the two lifting rods 310. When only a single protrusion 340 is required to lift a single lifting rod 310, the translation drive member 333 drives the longer protrusion 340 to face one lifting rod 310. At this time, the shorter protrusion is staggered with the other lifting rod 310.

[0033] In this second embodiment, when in use, only one protrusion 340 can be selected according to the needs of use to lift up the lifting rod 310 opposite to it. Specifically, when the doula ball needs to be used to assist the pregnant woman to move up and down smoothly, the translation drive member 333 drives the shift rod to move toward one side of the avoidance groove 334, so that the two protrusions 340 are respectively opposite to the two lifting rods 310. At this time, when the turntable rotates until its two protrusions 340 are respectively opposite to the two lifting rods 310, the two lifting rods 310 can be lifted up smoothly. When it is necessary to lift the doula ball on one side, the translation drive member 333 drives the shift rod 332 to move along the other side of the avoidance groove 334. Since the length of one protrusion 340 is greater than the length of the other protrusion 340, when the shift rod 332 is moving After that, the longer protrusion 340 will also be directly opposite to the lifting rod 310, while the shorter protrusion 340 will be staggered with the lifting rod 310. In this way, the longer protrusion 340 will also lift up one lifting rod 310. At this time, the movable seat 200 is lifted up on one side, so that the doula ball is lifted up from one side. When the turntable drives the longer protrusion 340 to leave the lifting rod 310, the lifted part of the movable seat 200 will be put down, so that the doula ball returns to its original state. In this way, the turntable continues to rotate, and the longer protrusion 340 can be used to lift up the passing lifting rods 310 one by one, so that the doula ball is lifted up in turn at different positions. In this way, pregnant women can control the way of lifting the doula ball upward according to their needs, which greatly improves the use experience.

[0034] In the above-mentioned embodiment 2, among the two lifting rods 310 symmetrically arranged on both sides of the telescopic rod 210, a protrusion 340 lifts one of the lifting rods 310, so that the movable seat 200 as a whole rotates upward with the other lifting rod 310 as the rotation fulcrum. At this time, the movable seat 200 is mainly lifted and rotated upward by relying on these two lifting rods 310. In order to improve the stability of the activity of the movable seat 200, in this embodiment, the lifting mechanism also includes a first spring 360, which is sleeved on the outside of the sliding sleeve 350, and a limiting shoulder 311 is formed on the outside of the top of the lifting rod 310. The upper and lower ends of the first spring 360 are respectively against the limiting shoulder 311 and the top side of the base 100. Among the two lifting rods 310 symmetrical with the telescopic rod 210, when one of the lifting rods 310 is facing the longer protrusion 340, the other lifting rod 310 is facing the avoidance groove 334. When it is necessary to lift the doula ball upward from a unilateral position, for the two lifting rods 310 symmetrically arranged with the telescopic rod 210, the longer protrusion 340 is opposite to one lifting rod 310, and the shorter protrusion 340 is opposite to the avoidance groove 334. When the protrusion 340 lifts one lifting rod 310, the other lifting rod 310 moves downward into the avoidance groove 334. The avoidance groove 334 provides a space for avoidance and accommodation, so that multiple lifting rods 310 can be kept supporting the movable seat 200 at the same time, thereby improving the stability of the movable seat 200 when it is lifted from a unilateral direction.

[0035] In order to allow the lifting rod 310 to move smoothly up or down along the protrusion 340 and reduce the sense of jamming when the lifting rod 310 moves up and down, in this embodiment, the two protrusions 340 are connected to the top surface of the turntable in a smooth transition. When the turntable rotates until the protrusion 340 is directly opposite to the bottom of the lifting rod 310, the lifting rod 310 can move upward smoothly due to the smooth transition connection between the protrusion 340 and the top surface of the turntable, and then the lifting rod 310 can fall back smoothly along the protrusion 340, which can improve the user experience of lifting the doula ball up and down.

[0036] In the above embodiment, the rotating shaft can be directly connected to the center of the turntable, and the turntable can be connected to the base 100 through the rotating shaft. Since it is necessary to arrange multiple lifting rods 310 around the turntable, and then support the movable seat 200 through the multiple lifting rods 310, in order to improve the structural stability of the turntable, in this embodiment, the bottom side of the turntable is rotatably connected to the inner bottom side of the base 100, the driving motor 320 is fixed to the top side of the base 100, and the output end of the driving motor 320 extends into the base 100. A synchronous belt 335 is connected between the output end of the turntable 20 and the outer side of the disk body 331. In practical applications, a bearing can be set between the bottom side of the turntable and the inner bottom side of the base 100, so that the turntable is rotatably connected to the base 100, or an annular groove is set on the inner bottom side of the base 100, and a plurality of rollers are set at the position of the bottom side of the turntable facing the annular groove, so that the turntable can slide on the inner bottom side of the base 100 through the plurality of rollers. In addition, a rotating shaft can be set at the center of the turntable to be rotatably connected to the base 100, thereby improving the stability of the turntable rotation. The driving motor 320 transmits the turntable through the synchronous belt 335, thereby driving the turntable to rotate. Since the turntable is rotatably connected to the base 100, the inner bottom side of the base 100 itself can be used to stably support the turntable, greatly improving the stability of the turntable when rotating.

[0037] When the turntable rotates, the multiple telescopic rods 210 need to move relatively on the turntable. In order to improve the smoothness of the movement of the telescopic rods 210, in this embodiment, the bottom ends of the multiple telescopic rods 210 are respectively connected to pulleys 212. The multiple telescopic rods 210 move relatively on the turntable through the pulleys 212. The pulleys 212 can reduce the rolling friction between the turntable and the turntable, thereby improving the smoothness of the relative displacement of the telescopic rods 210 on the turntable.

[0038] Since the lifting rod 310 needs to provide support to the movable seat 200 from multiple angles, in order to make the lifting rod 310 and the movable seat 200 contact more stably, in this embodiment, a spherical connector 312 is formed at the top of the lifting rod 310. The spherical connector 312 is also a connector formed at the top of the lifting rod 310, and the shape of the connector is spherical. A limiting hole is provided at the bottom side of the movable seat 200 facing the spherical connector 312, and the spherical connector 312 is connected in the limiting hole. The top of the lifting rod 310 is connected to the limiting hole through the spherical connector 312. When the movable seat 200 is lifted to a relative deflection with the lifting rod 310, the spherical connector 312 can also maintain contact and support with the limiting hole, thereby improving the stability of supporting the movable seat 200.

[0039] Since the movable seat 200 will produce relative deflections in multiple directions relative to the lifting rod 310, when the lifting rod 310 lifts the movable seat 200, taking the example of two lifting rods 310 symmetrical to the telescopic rod 210 simultaneously lifting the movable seat 200, the movable seat 200 is easy to produce relative deflections with the two lifting rods 310 as rotation fulcrums. Therefore, in order to better assist pregnant women in performing training activities along the up and down directions on the doula ball, in this embodiment, the lifting rod 310 includes a sleeve and a push rod, the sleeve is cooperatively connected to the sliding sleeve 350, the push rod is slidably connected to the sleeve along the up and down directions, the limiting shoulder 311 is formed at the top of the push rod, and the outer side of the sleeve is provided There is an annular groove, a limiting groove is arranged around the inner side of the base 100, a retaining ring is arranged in the limiting groove, a second spring is arranged between the bottom side wall of the limiting groove and the bottom side of the retaining ring, the second spring has a tendency to push the retaining ring toward the top side wall of the limiting groove, the annular groove and the retaining ring are connected to each other in a cooperative manner, the push rod is connected to the sleeve in a cooperative manner, the top of the sleeve is formed with the spherical connector 312, the bottom end of the push rod is against the top side of the turntable, the top of the push rod is formed with a rotating shaft connector, the bottom side of the limiting hole is provided with a connecting hole, the protrusion 340 can push the push rod upward and make the rotating shaft connector cooperate and connect in the connecting hole.

[0040] When the cam 340 is in contact with the lifting rod 310, the cam 340 is in contact with the lifting rod 310, and the cam 340 is in contact with the lifting rod 310. ..., and the cam 340 is in contact with the lifting rod 310. When the cam 340 is in contact with the lifting rod 310, the cam 340 is in contact with the lifting rod 310, and the cam 340 is in contact with the lifting rod 310, and the cam 340 is in contact with the lifting rod 310 The connecting line between 10 is the rotation axis and swings, thereby improving the stability of the push rod when lifting the movable seat 200. Of course, the connecting hole extends a distance along the radial direction of the movable seat 200. When only one lifting rod 310 lifts the movable seat 200 upward, the rotating shaft connector at the top of the lifting rod 310 can slide relatively in the connecting hole, so that the movable seat 200 is normally lifted upward by the single lifting rod 310. When the turntable rotates until the protrusion 340 is offset from the lifting rod 310, the push rod falls down and exits the connecting hole. At this time, the spherical connector 312 at the top of the sleeve cooperates with the limiting hole on the bottom side of the movable seat 200 to limit the position. In this way, through the mutual clutch of the push rod and the connecting hole, it is effectively ensured that the lifting rod 310 lifts the movable seat 200 upward more smoothly, and it is ensured that the lifting rod 310 can assist the movable seat 200 to rotate when it is not lifted.

[0041] In some embodiments, an armrest 400 is provided on the base 100 beside the movable seat 200. When using the device, a pregnant woman can place her hands on the armrest 400 to assist in supporting the whole device, thereby further improving the safety of use. In practical applications, the armrest 400 can be a structure that can be raised and lowered to meet different usage requirements.

[0042] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A delivery assistance device, characterized in that: include: Base (100); The movable seat (200) has a telescopic rod (210) connected to the bottom side and a limit frame (220) arranged on the top side, wherein the bottom end of the telescopic rod (210) is connected to the base (100), and the limit frame (220) is surrounded to form a limit space opening upward; A lifting mechanism is arranged on the top side of the base (100), the lifting mechanism has a lifting rod (310) that can move up and down, the lifting rod (310) is against the bottom side of the movable seat (200), and there are multiple lifting mechanisms in a circular array around the telescopic rod (210); A driving mechanism is arranged on the base (100) and can drive the plurality of lifting rods (310) to move up and down respectively. The driving mechanism comprises a driving motor (320), a turntable and a protrusion (340). The driving motor (320) is connected to the base (100). The turntable is rotatably connected to the base (100). The driving motor (320) is connected to the turntable in a transmission manner. The rotation axis of the turntable is located on the telescopic rod (210). The bottom ends of the plurality of lifting rods (310) are respectively against the telescopic rod (210). The top side of the turntable, the protrusions (340) are symmetrically arranged on the top side of the turntable along the rotation axis of the turntable, the driving motor (320) drives the turntable to rotate and causes the two protrusions (340) to respectively push the two lifting rods (310) upward, the lifting mechanism includes a sliding sleeve (350) connected to the top side of the base (100), the lifting rod (310) and the sliding sleeve (350) are mutually connected, and a lifting mechanism (310) is arranged between the top of the telescopic rod (210) and the bottom side of the movable seat (200). The turntable comprises a universal joint (211), the turntable comprises a turntable body (331), a gear lever (332) and a translation driving member (333), the turntable body (331) is rotatably connected to the base (100), the drive motor (320) is transmission-connected to the turntable body (331), a avoidance groove (334) is arranged on the top side of the turntable body (331), the gear lever (332) is slidably connected to the avoidance groove (334), the translation driving member (333) is connected to the turntable body (331), and the two protrusions (34 0) are respectively connected to the top sides of both ends of the shift lever (332), wherein the length of one of the protrusions (340) along the length direction of the shift lever (332) is greater than the length of the other protrusion (340) along the length direction, and the translation drive member (333) can drive the shift lever (332) to move along the length direction of the avoidance groove (334), and make the two protrusions (340) respectively face the two lifting rods (310) or the protrusion (340) with a longer length faces one lifting rod (310).

2. A delivery aid according to claim 1, characterized in that: The lifting mechanism also includes a first spring (360), which is sleeved on the outside of the sliding sleeve (350). A limiting shoulder (311) is formed on the outside of the top of the lifting rod (310). The upper and lower ends of the first spring (360) are respectively against the limiting shoulder (311) and the top side of the base (100). Among the two lifting rods (310) symmetrical with the telescopic rod (210), when one lifting rod (310) is facing the longer protrusion (340), the other lifting rod (310) is facing the avoidance groove (334).

3. A delivery aid according to claim 1, characterized in that: The two protrusions (340) are connected to the top surface of the rotating disk in a smooth transition manner.

4. A delivery aid according to claim 1, characterized in that: The bottom side of the turntable is rotatably connected to the inner bottom side of the base (100), the drive motor (320) is fixed to the top side of the base (100), the output end of the drive motor (320) extends into the base (100), and a synchronous belt (335) is connected between the output end of the drive motor (320) and the outer side of the disk body (331).

5. A delivery aid device according to claim 1, characterized in that: The bottom ends of the plurality of telescopic rods (210) are respectively connected to pulleys (212).

6. A delivery aid according to claim 1, characterized in that: A spherical connector (312) is formed at the top of the lifting rod (310), and a limiting hole is provided on the bottom side of the movable seat (200) at a position directly opposite to the spherical connector (312), and the spherical connector (312) is fitted and connected in the limiting hole.

7. A delivery aid device according to claim 1, characterized in that: An armrest (400) is provided on the base (100) at a side position of the movable seat (200).

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