CN110811222A

CN110811222A - Multifunctional child-care vehicle

Info

Publication number: CN110811222A
Application number: CN201911117868.9A
Authority: CN
Inventors: 张艳红
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-02-21

Abstract

The invention belongs to the technical field of baby products and discloses a multifunctional baby carriage which comprises a base, a support frame and a rocking chair assembly, wherein the support frame is installed at one end of the base; the rocking chair assembly comprises an upper frame body, a lower frame body and a connecting rod assembly, wherein the upper frame body and the lower frame body are connected in a rotating mode; a swinging assembly for controlling the rocking chair to swing and a motor for controlling the swinging assembly to work are arranged on the base; the motor controls the swinging assembly to enable the rocking chair assembly to swing or be fixed in the horizontal direction; the supporting frame can be lifted to adjust the height of the rocking chair component; the swing assembly is vertically rotatable from an initial configuration to an upright configuration for a child to learn to walk. The baby walker can be used as a rocking chair to help a baby to sleep, can be used for the baby to learn to walk in the growth process of the baby, and has a single service cycle compared with the rocking chair or the walker.

Description

Multifunctional child-care vehicle

Technical Field

The invention belongs to the technical field of baby products, and particularly relates to a multifunctional baby carriage.

Background

Among the existing infant care products, with the growth of infants, different infant care products such as rocking chairs, baby strollers, strollers and the like are often available in different periods or different occasions, and such products generally have single functions and short service cycles, and for example, the baby strollers can only be used as products in the learning period.

Chinese utility model patent No. CN200953979Y discloses a dual-purpose cart for walking and rocking chair, which is realized by turning the turning frames at both sides outward by 90 degrees when switching from the walker to the rocking chair, so that the arc-shaped side faces of the turning frames land and the wheel bodies turn inward along with the turning frames; in this document, the baby seat cannot be adjusted when used as a walker, and the baby has a poor walking posture or habit and needs to be corrected at a later stage.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, a multifunctional baby carriage is provided.

In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a multifunctional child-care vehicle comprises a base, a supporting frame arranged at one end of the base and a rocking chair component arranged on the supporting frame; a swinging assembly for controlling the rocking chair to swing and a motor for controlling the swinging assembly to work are arranged on the base; the motor controls the swinging component to enable the rocking chair component to swing or be fixed in the horizontal direction; the symmetry plane of the rocker chair component and the symmetry plane of the supporting frame are located on the same plane.

The support frame comprises a support rod and a mounting frame for mounting the rocking chair component; the rocking chair component comprises an upper frame body and a lower frame body which are connected in a rotating manner; the rocking chair component is rotatably arranged on the mounting frame through the upper frame body; and a cam part for fixing the rotation position of the lower frame is formed at the connecting part of the lower frame and the upper frame.

The rocking chair assembly also comprises a connecting rod assembly arranged on the side surfaces of the upper frame body and the lower frame body; the connecting rod assembly comprises a first connecting rod which is rotatably connected to a rotating shaft of the upper frame body, a second connecting rod which is fixedly connected to a rotating shaft of the lower frame body and a transverse connecting rod which is used for connecting the first connecting rod and the second connecting rod; the end part of the first connecting rod or the second connecting rod is fixedly connected with a handle; a lug is formed on one side of the first connecting rod facing the upper frame body; two limiting lugs are formed on one side, facing the first connecting rod, of the upper frame body corresponding to the lugs; an arc-shaped bulge used for positioning the first connecting rod is formed at the position, corresponding to the first connecting rod, of the mounting frame; the lower frame body can rotate downwards through the rotation of the handle, an included angle is limited through the cam part, then the upper frame body is further rotated until the upper frame body is vertical through the abutting of the convex block and the limiting convex block, and the first connecting rod and the mounting frame are positioned to fix all parts.

When the rocking chair component is in an initial state, an included angle between the rocking chair component and a horizontal plane is 0-30 degrees, and the rocking chair component and the mounting rack are positioned through the first connecting rod so as to fix all components; the supporting frame can be lifted to adjust the height of the rocking chair component.

As a preferable scheme: the swinging assembly comprises a rotating rod rotatably mounted on the base, a driving gear fixedly connected to an output shaft of the motor and a rotating disc coaxially mounted below the driving gear; the support rod is sleeved on the rotating rod; the rotating rod is kept fixed in the vertical direction; the rotating rod and the supporting frame synchronously rotate; a positioning part is formed at the lower end of the rotating rod below the base; a rocker is formed on one side of the positioning part facing the motor; a connecting groove is formed in the rocker;

the driving gear is positioned below the base; the rotating disc is positioned between the driving gear and the positioning part; the rotating disc is rotatably connected with an output shaft of the motor; a first ratchet wheel is fixedly connected below the driving gear; a pawl is arranged above the rotating disc corresponding to the first ratchet wheel; a sliding head which is connected in the connecting groove in a sliding manner is formed below the rotating disc;

a sliding inserting plate is connected below the base in a sliding manner; the insert plate is formed with a rack which is in meshing transmission connection with the driving gear; the sliding insertion plate is provided with an insertion rod towards the positioning part; a socket for positioning is formed on the positioning part facing the inserted link; a spring is arranged at one end of the sliding inserting plate, which is far away from the driving gear; the sliding insertion plate slides to one end of the stroke, the insertion rod is inserted into the insertion hole, the rack and the driving gear just separate from each other and the spring contracts when the sliding insertion plate slides to the other end, and the insertion plate separates from the first ratchet wheel and the pawl in the insertion hole process.

As a preferable scheme: an outer rack is formed on the outer side of the sliding inserting plate; the lower end of the base is fixedly connected with a supporting leg screw rod; the supporting leg screw is connected with a supporting leg in a threaded manner; a driven gear in meshing transmission connection with the external tooth bar is formed on the periphery of the upper part of the supporting leg; the sliding insertion plate is far away from the rotating rod, when the sliding insertion plate moves in the direction of the rotating rod, the base is supported by the supporting legs to be limited to move, and the supporting legs support the base earlier than the insertion plate is separated from the inserting hole.

As a preferable scheme: the lower end of the supporting rod is rotatably connected with a rotating knob; an external thread is formed on the periphery of the rotating rod; an internal thread in threaded connection with the external thread is formed on the inner wall of the rotary knob; one side of the rotating rod is provided with a vertically arranged sliding groove; the inner wall of the supporting rod is provided with a sliding block which is connected with the sliding groove in a sliding manner.

As a preferable scheme: a crawler assembly is arranged on the base and below the rocking chair assembly; the crawler assembly comprises a crawler arranged along the length direction of the base, and a front wheel shaft and a rear wheel shaft which are arranged at two ends of the inner side of the crawler; ratchets arranged at equal intervals are formed on the inner wall of the crawler; a second ratchet wheel in one-way transmission connection with the ratchet is formed on the front wheel shaft, so that the upper surface of the crawler belt moves backwards to drive the front wheel shaft to rotate; two ends of the front wheel shaft are respectively and fixedly connected with a shaft end gear; an adjusting gear in meshing transmission connection with the shaft end gear is arranged on the base; the outer side of the adjusting gear and two ends of the rear wheel shaft are respectively and fixedly connected with wheels.

As a preferable scheme: the two outer racks are symmetrically formed on the left side and the right side of the sliding inserting plate; the number of the supporting leg screw rods and the number of the supporting legs are respectively 2.

As a preferable scheme: the distance between the hinge points of the transverse connecting rod and the second connecting rod is greater than the distance between the hinge points of the transverse connecting rod and the first connecting rod, and the ratio of the distances is 1.5-2.

Compared with the prior art, the invention has the beneficial effects that: when the rocking chair assembly is used for helping the infant to sleep, the supporting frame is located at the lowest end, the rocking chair assembly is located in an initial state, the supporting legs support the wheels to prevent the wheels from rolling and further fix the position of the base, the sliding inserting plate is located at one end far away from the rotating rod, the inserting rod is separated from the inserting port at the moment, the rotating rod is driven by the motor to rotate positively at the moment, and the rotating rod swings in a reciprocating mode within a certain angle to enable the rocking chair to swing in a reciprocating mode; when the rocking chair component is used for an infant to learn to walk, the supporting frame is lifted upwards and fixed in height, the rocking chair component is rotated to be in an upright state and fixed through a binding belt and the like, the motor rotates reversely, the inserting rod moves towards the inserting opening, the supporting legs are retracted until the inserting rod is inserted into the inserting opening, the angle of the supporting frame relative to the base is fixed, namely the length direction of the rocking chair component is consistent with the length direction of the base, and the infant can advance through the wheels by treading the upper surface of the crawler.

The reverse rotation angle of the motor can be determined by the preset rotating speed and time when the motor is delivered from a factory.

The baby walker can be used as a rocking chair to help a baby to sleep, can be used for the baby to learn to walk in the growth process of the baby, and can greatly prolong the service cycle compared with the rocking chair or the walker; when the rocking chair is used as a rocking chair for helping babies to sleep, the base is supported by the supporting legs to fix the position of the base so as to keep stable; when the adjustable support frame is used for the infant to learn walking, the support legs can be folded up to realize the effect of learning walking of the infant through the action of the tracks and the wheels, bad walking habits caused by height problems such as standing on tiptoes and the like can be prevented through the adjustable support frame, and meanwhile, the infant is prevented from being injured by sharp objects and the like which may exist when the infant directly contacts the ground to learn walking; when the rocking chair component rotates to be in a vertical state, the lower frame body can rotate backwards to a fixed angle while the upper frame body rotates to be vertical through the rotation of the connecting rod component; the rocking chair and the baby walker can be switched by controlling the swinging assembly through the motor, namely, the supporting legs are controlled to be supported and the inserted bar is separated from the socket or the supporting legs are controlled to be retracted and the inserted bar is inserted into the socket.

Drawings

Fig. 1 and fig. 2 are schematic structural diagrams of the present invention in two states, respectively.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is an exploded view of the present invention.

Fig. 5 is a schematic structural view of the base.

Fig. 6 is a schematic structural view of the support bar.

Fig. 7 is a schematic view of the rotating lever.

Fig. 8 is a schematic structural view of the upper frame body.

Fig. 9 is a schematic structural view of the lower frame body.

Fig. 10 is a schematic structural view of the first link.

Fig. 11 is a schematic view of the structure of the front axle.

Fig. 12 is a schematic structural view of the drive gear.

Fig. 13 is a schematic view of the structure of the rotating disk.

Fig. 14 is a schematic structural view of the slide gate.

Fig. 15 is a schematic structural view of the leg.

Fig. 16 is a schematic view of the structure of the turning knob.

Fig. 17 is a schematic view of the structure of the crawler.

1. A base; 16. a support leg screw; 161. a limit screw; 17. sliding the clamping strip; 18. fixing a baffle plate; 19. positioning seats; 10. a support leg; 101. a driven gear; 102. supporting a cylinder; 103. lifting the head;

2. a support frame; 21. a support bar; 211. a slider; 212. positioning a knob; 22. a mounting frame; 23. mounting a rod; 231. an arc-shaped bulge; 232. a rack bar slot; 24. rotating the knob; 241. an internal thread;

3. a rocker chair assembly; 31. an upper frame body; 311. a support shaft; 312. a mating surface; 313. a limiting bump; 32. a lower frame body; 321. a cam portion; 33. a connecting rod assembly; 331. a first link; 3311. a handle; 3312. a bump; 332. a second link; 333. a transverse connecting rod;

4. a swing assembly; 41. rotating the rod; 411. a positioning part; 4111. a rocker; 41111. connecting grooves; 4112. a socket; 4113. a guide area; 412. a sliding groove; 413. an external thread; 42. a drive gear; 421. a first ratchet wheel; 43. rotating the disc; 431. a pawl; 432. a sliding head;

5. a motor;

6. a sliding plug board; 61. an inner rack; 62. inserting a rod; 63. an outer rack; 64. a spring;

7. a track assembly; 71. a crawler belt; 711. a ratchet; 72. a front wheel axle; 721. a second ratchet wheel; 722. a shaft end gear; 73. a rear wheel axle; 74. adjusting the gear; 75. a wheel; 76. a support roller;

8. a frame rod.

Detailed Description

Example 1

Referring to fig. 1 to 17, the utility model of the present embodiment comprises a base 1, a supporting frame 2 mounted on one end of the base, and a rocking chair assembly 3 mounted on the supporting frame; a swinging component 4 for controlling the rocking chair to swing and a motor 5 for controlling the swinging component to work are arranged on the base; the motor controls the swinging component to enable the rocking chair component to swing or be fixed in the horizontal direction; the length direction of the rocking chair component is consistent with that of the supporting frame.

The support frame includes a support bar 21 and a mounting bracket 22 for mounting the rocker chair assembly; the mounting rack is fixedly connected to the upper end of the supporting rod; two end parts of the mounting rack are respectively formed with mounting rods 23 arranged along the length direction of the base; the rocking chair component comprises an upper frame body 31 and a lower frame body 32 which is rotatably connected with the upper frame body; a chair pocket for an infant to lie is arranged in the upper frame body and the lower frame body; the upper frame body is longer than half of the rocking chair component; supporting shafts 311 are respectively formed on two sides of the upper frame body; the rocking chair component is rotatably arranged on the mounting frame through the supporting shaft; a cam part 321 for fixing the rotation position of the lower frame is formed at the connecting part of the lower frame and the upper frame; the upper frame body is provided with a matching surface 312 corresponding to the cam part; the lower frame body and the upper frame body are positioned on the same straight line in an initial state, and when the lower frame body rotates backwards for a certain angle relative to the upper frame body, the lower frame body and the upper frame body keep a fixed angle under the action of the cam part.

Furthermore, in order to ensure the fixation of the relative position between the upper frame body and the lower frame body in the initial state, the upper frame body and the lower frame body can be fixed in a mode that two ends of a movable straight rod are respectively connected to the upper frame body and the lower frame body, for example, a linear groove is formed in the inner side walls of the upper frame body and the lower frame body, and the straight rod is placed into the linear groove, so that the straight line can be kept between the upper frame body and the lower frame body.

The rocking chair assembly also comprises a connecting rod assembly 33 arranged on the side surfaces of the upper frame body and the lower frame body; the connecting rod assembly comprises a first connecting rod 331 rotatably connected to the supporting shaft, a second connecting rod 332 fixedly connected to the rotating shaft of the lower frame body, and a cross connecting rod 333 for connecting the first connecting rod and the second connecting rod; a handle 3311 is fixedly connected to an end of the first connecting rod or the second connecting rod; a bump 3312 is formed on one side of the first connecting rod facing the upper frame body; two limiting lugs 313 are formed on one side of the upper frame body facing the first connecting rod and correspond to the lugs; the rotation range of the first connecting rod relative to the upper frame body is limited by two limiting convex blocks and the convex blocks; an arc-shaped bulge 231 for positioning the first connecting rod is formed at the end part of the mounting rod corresponding to the first connecting rod; the lower frame body can rotate downwards through the rotation of the handle, an included angle is limited through the cam part, then the upper frame body is further rotated until the upper frame body is vertical through the abutting of the convex block and the limiting convex block, and each part is fixed through the positioning of the first connecting rod and the mounting frame; when the first connecting rod rotates upwards, the second connecting rod is driven to rotate, so that the lower frame body rotates from an initial state to another included angle state and is positioned through the cam part; with the continuous rotation of the first connecting rod, the bump abuts against one limiting bump to enable the upper frame body to rotate to a vertical state, and in the process, the first connecting rod rotates from one end of the arc-shaped bulge to the other end and is fixed by the arc-shaped bulge; and conversely, in the same way, when the first connecting rod rotates downwards, the lower frame body and the upper frame body rotate to the same straight line through the transverse connecting rod and the second connecting rod, and the upper frame body and the lower frame body return to the initial positions.

The distance between the hinge points of the transverse connecting rod and the second connecting rod is greater than the distance between the hinge points of the transverse connecting rod and the first connecting rod, and the ratio of the distances is 1.5-2.

When the rocking chair component is in an initial state, an included angle between the rocking chair component and a horizontal plane is 0-30 degrees, and the rocking chair component is positioned through the first connecting rod and the mounting frame so as to fix all the components; the supporting frame can be lifted to adjust the height of the rocking chair component.

The swinging assembly comprises a rotating rod 41 rotatably mounted on the base, a driving gear 42 fixedly connected to an output shaft of the motor and a rotating disc 43 coaxially mounted below the driving gear; the support rod is sleeved on the rotating rod; a positioning seat 19 for fixing the vertical position of the rotating rod is arranged on the base; the positioning seat is sleeved outside the rotating rod and is fixed with the rotating rod through a transverse pin shaft, so that the rotating rod is kept fixed in the vertical direction; a sliding groove 412 which is vertically arranged is formed in one side of the rotating rod; a sliding block 211 which is connected with the sliding groove in a sliding manner is formed on the inner wall of the supporting rod, so that the rotating rod and the supporting frame rotate synchronously; a positioning part 411 is formed at the lower end of the rotating rod below the base; a rocker 4111 is formed on one side of the positioning part facing the motor; a strip-shaped connecting groove 41111 is formed on the rocker.

The lower end of the supporting rod is rotatably connected with a rotating knob 24; the rotating knob moves up and down along with the supporting rod; an external thread 413 is formed on the periphery of the rotating rod; an internal thread 21 in threaded connection with the external thread is formed on the inner wall of the rotary knob; further, the external screw thread shaping position is that the dwang is located the upper portion that is close to base top department and dwang, and the middle part of dwang does not have the shaping external screw thread and can make rotation knob and support frame rapid upward movement and fix again on the external screw thread on upper portion and further adjust the position.

The driving gear is positioned below the base; the rotating disc is positioned between the driving gear and the positioning part; the rotating disc is rotatably connected with an output shaft of the motor; a first ratchet wheel 421 is fixedly connected below the driving gear; a pawl 431 is arranged above the rotating disc corresponding to the first ratchet wheel; a sliding head 432 connected in the connecting groove in a sliding manner is formed below the rotating disc.

When the motor drives the rotating rod to rotate positively, the first ratchet wheel drives the rotating disc to rotate, and the rotating rod swings in a reciprocating mode within a certain angle through connection between the sliding head and the rocker.

A sliding inserting plate 6 is connected below the base in a sliding manner; the inserting plate is formed with a rack 61 which is in meshing transmission connection with the driving gear; an inserting rod 62 is formed at the position of the sliding inserting plate facing the positioning part; a socket 4112 for positioning is formed in the position, facing the insert rod, of the positioning part; a spring 64 is arranged at one end of the sliding flashboard far away from the driving gear; the lower end of the base is fixedly connected with a sliding clamping strip 17 used for installing the sliding inserting plate, and the sliding inserting plate is connected to the sliding clamping strip in a sliding mode; the lower end of the base is positioned at the front end of the spring and is fixedly connected with a fixed baffle 18 for fixing the spring; when the sliding inserting plate slides to one end of the stroke, the inserting rod is inserted into the inserting hole, and when the sliding inserting plate slides to the other end, the inner rack and the driving gear just separate from each other and the spring contracts.

Furthermore, a bell-mouth-shaped guiding area 4113 is formed outwards at the position, located at the socket, of the upper part of the positioning part; when the dwang swings, prevent through the guiding area the inserted bar is right the interference of dwang, and work as the inserted bar to can pass through when the socket moves the guiding area is right the dwang carries out the location of angle.

An external tooth bar 63 is formed on the outer side of the sliding insert plate; the lower end of the base is positioned at two sides of the outer rack and is respectively and fixedly connected with a supporting leg screw 16; the supporting leg screw is in threaded connection with a supporting leg 10; a driven gear 101 in meshing transmission connection with the external tooth bar is formed on the periphery of the upper part of the supporting leg; a cylindrical support cylinder 102 is fixedly connected below the driven gear; a lifting head 103 in threaded connection with the supporting leg screw is fixedly connected in the supporting column; the lower end of the supporting leg screw rod is positioned in the supporting cylinder and is fixedly connected with a limiting screw 161 for limiting the stroke of the supporting leg; when the supporting legs move to the uppermost ends, the lowermost ends of the supporting legs do not contact the ground; the utility model discloses a slide flashboard, including the base, the bracing piece, the motor corotation drives the slide flashboard is along keeping away from when the dwang direction removes, through the landing leg will the base supports and restricts the base and removes, the in-process of motor corotation passes through drive gear drives interior rack makes the slide flashboard outwards removes, moves through the outer rack simultaneously the landing leg moves down until supporting the front end of base up, and drive gear with the inner rack breaks away from.

A crawler belt component 7 is arranged on the base and below the rocking chair component; the crawler assembly comprises a crawler 71 arranged along the length direction of the base, a front wheel shaft 72 and a rear wheel shaft 73 which are arranged at the two ends of the inner side of the crawler; the crawler belt drives the front wheel shaft to rotate; two ends of the front wheel shaft are respectively and fixedly connected with a shaft end gear 722; an adjusting gear 74 in meshing transmission connection with the shaft end gear is arranged on the base; wheels 75 are respectively arranged on the outer side of the adjusting gear and two ends of the rear wheel shaft; the bottom surface of the crawler belt is not in contact with the ground; the wheels on the outer side of the adjusting gear are fixedly connected with the adjusting gear, and the wheels on the rear wheel shaft are rotatably connected with the rear wheel shaft; the advancing direction of the rotated wheel is opposite to the moving direction of the upper surface of the crawler belt through the action of the adjusting gear and the shaft end gear.

Further, a plurality of support rollers 76 are mounted at the front part in the track; the rocking chair component is rotated to be in a vertical state on the premise that the supporting rod moves upwards and is fixed in a fixed position, the lower frame body is rotated backwards, then the infant is fixed on the rocking chair component through a binding belt and the like, the leg part naturally contacts with the crawler belt, and the body of the infant is fixed, so that when the infant tramples on the upper surface of the crawler belt, the crawler belt rotates under the action of friction force and is used for learning to walk; when the baby does not move, the baby stands on the supporting rollers, so that the baby can adapt to the strength of the legs when standing.

When the rocking chair assembly is used for helping the infant to sleep, the supporting frame is located at the lowest end, the rocking chair assembly is located in an initial state, the supporting legs support the wheels to prevent the wheels from rolling and further fix the position of the base, the sliding inserting plate is located at one end far away from the rotating rod, the inserting rod is separated from the inserting port at the moment, the rotating rod is driven by the motor to rotate positively at the moment, and the rotating rod swings in a reciprocating mode within a certain angle to enable the rocking chair to swing in a reciprocating mode; when the rocking chair component is used for an infant to learn to walk, the supporting frame is lifted upwards and fixed in height, the rocking chair component is rotated to be in an upright state and fixed through a binding belt and the like, the motor rotates reversely, the inserting rod moves towards the inserting opening, the supporting legs are retracted until the inserting rod is inserted into the inserting opening, the angle of the supporting frame relative to the base is fixed, namely the length direction of the rocking chair component is consistent with the length direction of the base, and the infant can advance through the wheels by treading the upper surface of the crawler.

Example 2

This example is modified from example 1 as follows: the first ratchet wheel is an incomplete ratchet wheel; the central angle corresponding to the position of the first ratchet wheel with the ratchet teeth is smaller than 90 degrees; the motor is a stepping motor or a servo motor; the base is provided with a control circuit board electrically connected with the motor; the supporting legs are in contact with the ground earlier than the inserting plate is separated from the inserting holes, and the first ratchet wheel is separated from the pawl in the process that the inserting plate is separated from the inserting holes.

When the motor rotates reversely, the driving gear and the rotating disc are not transmitted under the action of the first ratchet wheel and the pawl, the supporting legs move upwards relative to the supporting leg screw rod along with the movement of the sliding inserting plate towards the rotating rod, when the inserting plate is just completely inserted into the inserting opening, the supporting legs are still contacted with the ground, and at the moment, the wheels at the front wheel shaft are separated from the ground; the motor continuously rotates for a specific angle to enable the pawl to be positioned at one end of the maximum angle in the transmission direction of the first ratchet wheel, namely if the central angle corresponding to the first ratchet wheel is 60 degrees, the motor rotates forwards for 300 degrees to enable the first ratchet wheel and the pawl to be transmitted, and at the moment, the supporting legs are folded and separated from the ground; the number of turns and the angle of the motor are controlled and recorded by the control circuit board at every turn, so that the angle during reversal can be calculated conveniently.

When the electric walking aid is used for the infants to learn walking in situ, the plug board is just completely inserted into the socket by controlling the motor, the supporting legs still contact the ground, and the rest is the same as that in the embodiment 1.

By arranging the incomplete ratchet wheel, a function for the infant to learn walking in situ is added in the process of retracting the supporting legs, and the infant walking aid can be placed in a room with a small space range.

Example 3

This example is modified from example 1 or 2 as follows: a frame rod groove 232 is formed at the upper end of each of the two mounting rods close to the upper frame body; the frame rod groove is detachably clamped with a frame rod 8; when the infant is fixed on the rocking chair component, the upper arm of the infant is placed above the frame rod and fixed, and a binding band fixed from the spanning part of the infant is not needed, so that the problem of leg shape or walking (such as splayfoot walking) caused by the binding band of the spanning part is prevented, and the later correction is avoided.

Example 4

This example is modified from example 1 or 2 as follows: the base can also be detachably provided with a push rod; ratchets 711 arranged at equal intervals are formed on the inner wall of the crawler; a second ratchet wheel 721 in one-way transmission connection with the ratchet is formed on the front wheel shaft, so that the front wheel shaft can be driven to rotate only by moving the upper surface of the track backwards, and the track cannot be driven to rotate by the front wheel shaft when the front wheel shaft rotates along the rotating direction.

Furthermore, a hood for shading sun is further installed on the upper frame body.

When the supporting legs are completely retracted, the supporting rod is moved to the lowest end, the rocking chair component is rotated to the initial state, the supporting rod cannot rotate in the horizontal direction due to the action of the sliding grooves and the sliding blocks, and the wheels are in contact with the ground when the supporting legs are retracted; when the infant is fixed on the rocking chair component, the infant can be pushed by parents through the push rod to be used as a baby carriage, and due to the effects of the shaft end gear, the adjusting gear, the ratchet and the second ratchet wheel, in the process of pushing the base to advance through the push rod, the rotation direction of the front wheel shaft is consistent with the rotation direction of the front wheel shaft driven by the crawler belt to rotate, and at the moment, the crawler belt can be kept static relatively and used as a storage platform.

To further prevent the track from rotating, the push rod is connected to the track by clamping or the like when mounted on the base.

Claims

1. A multi-functional child-care vehicle which is characterized in that: the rocking chair comprises a base, a supporting frame arranged at one end of the base and a rocking chair component arranged on the supporting frame; a swinging assembly for controlling the rocking chair to swing and a motor for controlling the swinging assembly to work are arranged on the base; the motor controls the swinging component to enable the rocking chair component to swing or be fixed in the horizontal direction;

the support frame comprises a support rod and a mounting frame for mounting the rocking chair component; the rocking chair component comprises an upper frame body and a lower frame body which are connected in a rotating manner; the rocking chair component is rotatably arranged on the mounting frame through the upper frame body; a cam part for fixing the rotation position of the lower frame is formed at the connecting part of the lower frame and the upper frame;

the rocking chair assembly also comprises a connecting rod assembly arranged on the side surfaces of the upper frame body and the lower frame body; the connecting rod assembly comprises a first connecting rod which is rotatably connected to a rotating shaft of the upper frame body, a second connecting rod which is fixedly connected to a rotating shaft of the lower frame body and a transverse connecting rod which is used for connecting the first connecting rod and the second connecting rod; the end part of the first connecting rod or the second connecting rod is fixedly connected with a handle; a lug is formed on one side of the first connecting rod facing the upper frame body; two limiting lugs are formed on one side, facing the first connecting rod, of the upper frame body corresponding to the lugs; an arc-shaped bulge used for positioning the first connecting rod is formed at the position, corresponding to the first connecting rod, of the mounting frame; the lower frame body can rotate downwards through the rotation of the handle, an included angle is limited through the cam part, then the upper frame body is further rotated until the upper frame body is vertical through the abutting of the convex block and the limiting convex block, and each part is fixed through the positioning of the first connecting rod and the mounting frame;

when the rocker chair assembly is in the initial state, the included angle between the rocker chair assembly and the horizontal plane is 0-30 degrees, and the first connecting rod and the mounting frame are positioned so as to fix all the parts.

2. The multi-functional nursing cart of claim 1, wherein: the swinging assembly comprises a rotating rod rotatably mounted on the base, a driving gear fixedly connected to an output shaft of the motor and a rotating disc coaxially mounted below the driving gear; the support rod is sleeved on the rotating rod; the rotating rod is kept fixed in the vertical direction; the rotating rod and the supporting frame synchronously rotate; a positioning part is formed at the lower end of the rotating rod below the base; a rocker is formed on one side of the positioning part facing the motor; a connecting groove is formed in the rocker;

3. The multi-functional nursing cart of claim 2, wherein: an outer rack is formed on the outer side of the sliding inserting plate; the lower end of the base is fixedly connected with a supporting leg screw rod; the supporting leg screw is connected with a supporting leg in a threaded manner; a driven gear in meshing transmission connection with the external tooth bar is formed on the periphery of the upper part of the supporting leg; the sliding insertion plate is far away from the rotating rod, when the sliding insertion plate moves in the direction of the rotating rod, the base is supported by the supporting legs to be limited to move, and the supporting legs support the base earlier than the insertion plate is separated from the inserting hole.

4. The multi-functional nursing cart of claim 3, wherein: the lower end of the supporting rod is rotatably connected with a rotating knob; an external thread is formed on the periphery of the rotating rod; an internal thread in threaded connection with the external thread is formed on the inner wall of the rotary knob; one side of the rotating rod is provided with a vertically arranged sliding groove; the inner wall of the supporting rod is provided with a sliding block which is connected with the sliding groove in a sliding manner.

5. The multi-functional nursing cart of any one of claims 1-4, wherein: a crawler assembly is arranged on the base and below the rocking chair assembly; the crawler assembly comprises a crawler arranged along the length direction of the base, and a front wheel shaft and a rear wheel shaft which are arranged at two ends of the inner side of the crawler; ratchets arranged at equal intervals are formed on the inner wall of the crawler; a second ratchet wheel in one-way transmission connection with the ratchet is formed on the front wheel shaft, so that the upper surface of the crawler belt moves backwards to drive the front wheel shaft to rotate; two ends of the front wheel shaft are respectively and fixedly connected with a shaft end gear; an adjusting gear in meshing transmission connection with the shaft end gear is arranged on the base; the outer side of the adjusting gear and two ends of the rear wheel shaft are respectively and fixedly connected with wheels.

6. The multi-functional nursing cart of claim 3, wherein: the two outer racks are symmetrically formed on the left side and the right side of the sliding inserting plate; the number of the supporting leg screw rods and the number of the supporting legs are respectively 2.

7. The multi-functional nursing cart of claim 5, wherein: the distance between the hinge points of the transverse connecting rod and the second connecting rod is greater than the distance between the hinge points of the transverse connecting rod and the first connecting rod, and the ratio of the distances is 1.5-2.