CN111746619A

CN111746619A - Multifunctional baby carriage

Info

Publication number: CN111746619A
Application number: CN202010472729.4A
Authority: CN
Inventors: 包世萍; 朱子燊; 曾德江; 翟小兵; 鲍仲辅; 桂建保; 高灏轩; 柯俊锐; 林伟杰
Original assignee: Guangdong Mechanical and Electrical College
Current assignee: Guangdong Mechanical and Electrical College
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-10-09

Abstract

The invention relates to the field of baby products and discloses a multifunctional baby carriage which comprises a polygonal frame, a seat basket, a U-shaped push rod, wheels, a camera and a distance measuring radar, wherein the seat basket is arranged on the polygonal frame; the polygonal frame comprises a first driving motor, and a first connecting rod assembly, a second connecting rod assembly, a third connecting rod assembly and a fourth connecting rod assembly which are sequentially hinged; the first driving motor is installed on the first connecting rod assembly, an output shaft of the first driving motor is connected with the fourth connecting rod assembly, the seat basket is installed on the first connecting rod assembly, the wheels are installed at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly respectively, the U-shaped push rod is installed on the first connecting rod assembly, the range radar is installed on the seat basket and the U-shaped push rod respectively, and the camera is installed on the seat basket. The beneficial effects are that: the angle and the position of the baby carriage seat basket can be adjusted by the polygonal frame, wheels can climb stairs and are suitable for different road surfaces, and the practicability and the comfort of the baby carriage are improved.

Description

Multifunctional baby carriage

Technical Field

The invention relates to the field of baby products, in particular to a multifunctional baby carriage.

Background

Most of the strollers in the current market are traditional cart-type strollers, the circular wheels are adopted, adults are required to push the strollers, even the high-end strollers with the price of tens of thousands of yuan, the main concern is that the material of the strollers and the comfort of the fabric of the seat basket are also realized, the strollers cannot walk independently, and the strollers are difficult to pass through when encountering uneven terrains such as stairs and the like, are required to be manually assisted, or are moved or folded to pass through, so that the use is inconvenient, time-consuming and labor-consuming. Therefore, it is urgent to need to design a multi-functional perambulator, can monitor baby's state, adapts to the uneven topography in city, climbs stair, adjusts perambulator seat basket angle and position, improves baby's comfort, liberates head of a family's both hands, improves the practicality and the travelling comfort of perambulator.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the multifunctional baby carriage which effectively improves the practicability and comfort of the baby carriage.

The purpose of the invention is realized by the following technical scheme: a multifunctional baby carriage comprises a polygonal frame, a seat basket, a U-shaped push rod, wheels, a camera and a distance measuring radar; the polygonal frame comprises a first driving motor, and a first connecting rod assembly, a second connecting rod assembly, a third connecting rod assembly and a fourth connecting rod assembly which are sequentially hinged; the first driving motor is installed on the first connecting rod assembly, an output shaft of the first driving motor is connected with the fourth connecting rod assembly, the seat basket is installed on the first connecting rod assembly, the wheels are installed at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly respectively, the U-shaped push rod is installed on the first connecting rod assembly, the range radar is installed on the seat basket and the U-shaped push rod respectively, and the camera is installed on the seat basket.

Further, the first connecting rod component comprises a first connecting rod, a first round joint and a connecting corner piece; two first connecting rods set up relatively, and first round joint is all installed at the middle part of two first connecting rods, and the connection corner fittings is all installed at the both ends of two first connecting rods, second connecting rod subassembly is articulated through the one end of connecting corner fittings and two first connecting rods, fourth connecting rod subassembly is articulated through the other end of connecting corner fittings and two first connecting rods, the seat basket is connected with the connection corner fittings at first connecting rod both ends, the both open ends of U-shaped push rod are connected with two first round joints respectively, first driving motor installs in the connection corner fittings that is close to fourth connecting rod subassembly.

Furthermore, the second connecting rod assembly comprises two second connecting rods, the two second connecting rods are arranged oppositely, one ends of the two second connecting rods are hinged to the first connecting rod assembly, and the other ends of the two second connecting rods are hinged to the third connecting rod assembly.

Furthermore, the fourth connecting rod assembly comprises two fourth connecting rods, the two fourth connecting rods are arranged oppositely, one ends of the two fourth connecting rods are hinged to the first connecting rod assembly, and the other ends of the two fourth connecting rods are hinged to the third connecting rod assembly.

Further, the third link assembly includes a third link, a first strut, and a second strut; the first supporting rod is installed at one end of the third connecting rod, the second supporting rod is installed at the other end of the third connecting rod, the two ends of the first supporting rod are hinged to the second connecting rod assembly, and the two ends of the second supporting rod are hinged to the fourth connecting rod assembly.

Further, the first strut is located on a front side of the stroller and the second strut is located on a rear side of the stroller.

Further, the device also comprises a fifth connecting rod assembly and a second driving motor; the fifth connecting rod assembly comprises two fifth connecting rods, the two fifth connecting rods are arranged oppositely and located between the first connecting rod assembly and the second connecting rod assembly, one ends of the two fifth connecting rods are hinged to the first connecting rod assembly, the other ends of the two fifth connecting rods are hinged to the second connecting rod assembly, the second driving motor is installed on the first connecting rod assembly, and an output shaft of the second driving motor is connected with the two fifth connecting rods.

Furthermore, the wheel comprises a hub, a spline shaft, a first pushing assembly, a wheel motor, a flange, a side end cover and a plurality of arc-shaped claws which can be enclosed into a complete circle; the outer circumference of the hub is provided with a plurality of bosses which are uniformly distributed, the arc-shaped claws are hinged with the corresponding bosses, a first through hole is formed in the center of the hub, the first pushing assembly is positioned on one side of the hub, the output end of the first pushing assembly is slidably connected with the arc-shaped claws, and a second through hole is formed in the center of the first pushing assembly; the flange is fixedly arranged on the other side of the hub, a third through hole is formed in the center of the flange, and a first circle of internal splines matched with the spline shaft are arranged in the third through hole; the side end cover is positioned on one side of the first pushing assembly, the side end cover is fixedly installed on the wheel hub, at least one part of the side end cover is in contact with the first pushing assembly, a fourth through hole is formed in the center of the side end cover, the spline shaft is movably arranged in an inner cavity defined by the first through hole, the second through hole, the third through hole and the fourth through hole, the output end of the wheel motor is movably connected with the spline shaft, the wheel hub is installed at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly through a flange and the side end cover, when the spline shaft is meshed with the first circle of internal spline, the wheel hub drives the arc-shaped claw to rotate, and when the spline shaft is meshed with the first pushing assembly, the first pushing assembly drives the arc-shaped claw.

Further, first promotion subassembly includes spiral dish and first push rod, the spiral dish is located wheel hub's one side, the spiral dish is close to one side of wheel hub and has opened the spiral wire casing, first push rod open have with spiral wire casing cooperation driven protruding groove, wheel hub has the spout of a plurality of and first through-hole intercommunication along its radial division, install in the spout first push rod slidable to through protruding groove and spiral wire casing cooperation transmission, the outer end and the corresponding arc claw slidable ground of first push rod are connected, the center of spiral dish is opened has the second through-hole, is provided with in the second through-hole and encloses the internal spline with integral key shaft matched with second, and when integral key shaft and second circle internal spline meshing, the spiral dish drives the arc claw and stretches out or retract.

Further, the second pushing assembly comprises a coil, an elastic piece, a protective shell and a second push rod; at least one part of protective housing sets up in the inner chamber of integral key shaft, another part of protective housing is located the fourth through hole, the coil is located the protective housing, the second push rod is located the coil, the one end of second push rod extends to the outside of protective housing, the other end of second push rod passes and is connected with the integral key shaft behind the protective housing, the one end of second push rod is provided with the retaining ring, the one end of second push rod is located to the elastic component cover, just the one end and the retaining ring butt of elastic component, the other end and the protective housing butt of elastic component.

Furthermore, the wheel also comprises a brake disc, the brake disc is installed at one end of the second push rod, a gap is formed between the brake disc and the side end cover, and the gap is equal to the moving distance of the spline shaft.

Further, the wheel also comprises a U-shaped bracket, a first bearing and a second bearing; the wheel hub, the side end cover and the spiral disc are all arranged in a U-shaped opening of the U-shaped support, a first connecting end of the U-shaped support is connected with an outer cylindrical surface of the side end cover through a first bearing, a second connecting end of the U-shaped support is connected with an outer cylindrical surface of the flange through a second bearing, the brake disc is coated on the periphery of the first connecting end of the U-shaped support, an opening is formed in the upper end of the brake disc, the width of the opening is larger than that of the first connecting end of the U-shaped support, and the wheel is mounted at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly through the U-shaped support.

Further, the seat basket comprises a first U-shaped frame, a second U-shaped frame, a handle, a long pin shaft and a seat basket supporting piece; the seat basket supporting piece is installed on the first connecting rod assembly, the open end of the first U-shaped frame is in butt joint with the open end of the second U-shaped frame, the first U-shaped frame and the second U-shaped frame are connected into a whole through a long pin shaft to form a basket, the basket is installed on the seat basket supporting piece, the handle is installed on the long pin shaft, the camera is installed on the handle, and the ranging radar is installed on the second U-shaped frame. The comfort of the baby is improved by arranging a cushion and a foot pad in the basket.

Furthermore, the seat basket supporting piece comprises two first L-shaped supporting rods, two second L-shaped supporting rods and two second circular joints, one ends of the two first L-shaped supporting rods are respectively connected with the connecting angle pieces at the front ends of the two first connecting rods, one ends of the two second L-shaped supporting rods are respectively connected with the connecting angle pieces at the rear ends of the two first connecting rods, and the other ends of the first L-shaped supporting rods and the other ends of the second L-shaped supporting rods positioned on the same side are connected through the second circular joints. Two second round joints are used for installing the first U-shaped frame. And a connecting rod is also arranged between the adjacent connecting corner pieces and used for reinforcing the seat basket.

Compared with the prior art, the invention has the following advantages:

1. the multifunctional baby carriage is provided with the polygonal frame, the angle and the position can be adjusted according to the terrain, the baby carriage seat basket is ensured to be in the horizontal position in real time, and the comfort of a baby is improved. Through camera real time monitoring baby's state, realize independently walking through camera and range radar and the wheel of taking the motor, the head of a family's both hands are liberated, still can improve the security of perambulator.

2. This multi-functional perambulator's polygon frame comprises confined quadrangle, pentagon or hexagon etc. by articulated link assembly in proper order, according to the closed figure of difference, confirms the degree of freedom of frame to confirm the quantity of frame motor. Through setting up the frame motor, the control connecting rod swing angle of adjustment guarantees that first connecting rod subassembly is in suitable angle and position to adjust baby's seat basket to the comfortable angle of baby's sensation and position.

3. This multi-functional perambulator still installs the wheel that can climb the building, and it has four arc claws along the outer circumference evenly distributed of wheel hub, and when smooth road surface went, the arc claw enclosed into complete circular doing the wheel and uses, and when meeting stair, the arc claw outwards stretched out, formed the stabilizer blade and climbed the building, and overall design is reasonable, and the motion is steady, and mobility is strong

4. This multi-functional perambulator can realize intelligent control through current algorithm, adapts to the uneven topography in city, and automatic walking, stair climb, intelligent adjustment perambulator seat basket angle and position improve baby's comfort, liberate the head of a family's both hands.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic configuration of a multi-function stroller according to the present invention;

FIG. 2 shows a first angular configuration of a polygonal frame according to the present invention;

FIG. 3 shows a second angle schematic of a polygonal frame in accordance with the present invention;

FIG. 4 shows an exploded view of a polygonal frame according to the present invention;

FIG. 5 shows a schematic view of a first angle of the wheel according to the present invention;

FIG. 6 shows a schematic view of a second angle of the wheel according to the present invention;

FIG. 7 is a schematic view of a first angle of opening of the arcuate claws of the wheel in accordance with the invention;

FIG. 8 is a schematic view of a second angle of opening of the arcuate claws of the wheel in accordance with the invention;

figure 9 shows a cross-section of a wheel according to the invention;

FIG. 10 shows an enlarged schematic view at A in FIG. 9;

FIG. 11 shows a schematic structural view of a hub according to the present invention;

FIG. 12 is a schematic view showing the structure of spline shafts according to the present invention;

FIG. 13 is a schematic view of an arcuate jaw according to the present invention;

FIG. 14 is a schematic view showing the construction of a first push rod according to the present invention;

FIG. 15 shows a schematic view of the closure of the arcuate jaw on the spiral disc in accordance with the present invention;

FIG. 16 is a schematic view of the configuration of the arcuate jaw of the present invention expanded on the spiral disc;

figure 17 shows an exploded view of a wheel according to the present invention;

fig. 18 is a schematic view illustrating a stair climbing of the multi-function stroller of the present invention;

in the drawings, 1 is a hub; 101 is a boss; 102 is a first through hole; 103 is a chute; 104 is a circular groove; 105 is a convex block; 2 is a spline shaft; 201 is a first ring of external splines; 202 is a second ring of external splines; 203 is a positioning groove; 204 is a transmission groove; 205 is a bevel; 3 is an arc claw; 301 is a T-shaped groove; 4 is a spiral disc; 401 is a spiral slot; 402 is a second via; 403 is a second ring of internal splines; 5 is a first push rod; 501 is a convex groove; 502 is a strip-shaped groove; 503 is a circular arc surface; 504 is a rolling bearing; 6 is a coil; 7 is an elastic piece; the protective shell is 8; 801 is a shell; 802 is a first transparent cover; 803 is a second transparent cover; 9 is a second push rod; 10 is a retainer ring; 11 is a stop block; 12 is a side end cover; 1201 is a fourth via; 13 is a brake disc; 1301 is an opening; 14 is a flange; 15 is a wheel motor; 1501 is the output shaft; 1502 is a connecting bond; 1503 is a motor mounting plate; 1504 is a support sleeve; 16 is a U-shaped bracket; 1601 is a U-shaped opening; 1602 is a first connection end; 1603 is a second connecting end; 17 is a first bearing; 18 is a second bearing; 19 is a bearing transparent cover; 20 is a semicircular bearing sleeve; 21 is a U-shaped push rod; 22 is a wheel; 23 is a camera; 24 is a range radar; 25 is a first driving motor; 2501 is a first major axis; 26 is a first connecting rod; 27 is a first round joint; 28 is a connecting corner fitting; 2801, inner corner fitting; 2802, an external corner fitting; 29 is a second link; 30 is a third connecting rod; 3001 is a first strut; 3002 is a second strut; 31 is a fourth link; 32 is a fifth link; 33 is a second drive motor; 3301 is the second major axis; 34 is a first U-shaped frame; 35 is a second U-shaped frame; 36 is a handle; 37 is a long pin shaft; 38 is a first L-shaped support bar; 39 is a second L-shaped support bar; 40 is a second round joint; 41 is a frame bearing; 42 is a cushion; 43 is a foot pad; 44 is a connecting rod; 45 is a sunshade.

Detailed Description

The invention is further illustrated by the following figures and examples.

The multifunctional baby carriage as shown in fig. 1-5 comprises a polygonal frame, a seat basket, a U-shaped push rod 21, wheels 22, a camera 23 and a distance measuring radar 24; the polygonal frame comprises a first driving motor 25, and a first connecting rod assembly, a second connecting rod assembly, a third connecting rod assembly and a fourth connecting rod assembly which are sequentially hinged; the first driving motor 25 is installed on the first connecting rod assembly, an output shaft of the first driving motor 25 is connected with the fourth connecting rod assembly, the seat basket is installed on the first connecting rod assembly, the wheels 22 are installed at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly respectively, the U-shaped push rod 21 is installed on the first connecting rod assembly, the range radar 24 is installed on the seat basket and the U-shaped push rod 21 respectively, and the camera 23 is installed on the seat basket. The camera 23 is used for monitoring the state of the baby in the basket and the condition outside the basket. The range radar is arranged at the positions of the seat basket and the U-shaped push rod 21 and used for detecting obstacles around the baby carriage. First driving motor can adjust the angle and the position of polygon frame, improves baby's comfort.

The first link assembly includes a first link 26, a first round joint 27, and a connecting angle 28; the two first connecting rods 26 are oppositely arranged, the middle parts of the two first connecting rods 26 are respectively provided with a first round joint 27, the two ends of the two first connecting rods 26 are respectively provided with a connecting angle piece 28, the second connecting rod assembly comprises two oppositely arranged second connecting rods 29, the fourth connecting rod assembly comprises two oppositely arranged fourth connecting rods 31, and the third connecting rod assembly comprises a third connecting rod 30, a first supporting rod 3001 and a second supporting rod 3002; first branch 3001 is installed in the one end of third connecting rod 30, second branch 3002 is installed in the other end of third connecting rod 30, and the one end of two second connecting rods 29 is articulated through the front end of connecting angle 28 and the first connecting rod that corresponds, the other end of 29 of two second connecting rods respectively with the both ends of first branch 3001 are articulated, and the one end of two fourth connecting rods 31 is articulated through the rear end of connecting angle 28 and the first connecting rod 26 that corresponds, and the other end of two fourth connecting rods 31 is articulated with the both ends of second branch 3002. In this embodiment, each hinge point of the polygonal frame can be further provided with a frame bearing 41, which is beneficial to improving the flexibility and the service life of the polygonal frame. The first driving motor 25 is mounted on an outer corner member 2802 close to the fourth connecting rod 31, an output shaft of the first driving motor is connected with the first long shaft 2501 through a key to drive the first long shaft 2501, the first long shaft 2501 is rotatably mounted on two connecting corner members 28 close to the fourth connecting rod through a frame bearing 41 to drive the two fourth connecting rods 31 to swing, the first driving motor 25 drives the two fourth connecting rods to swing when encountering a hollow road surface, the angle of each connecting rod in the multi-deformation frame is changed, the first connecting rod 26 is ensured to be always kept in a horizontal state, and the comfort degree of a baby is improved. The two open ends of the U-shaped push rod 21 are connected with first round joints 27 on two first connecting rods 26. The front end of the first link 26 refers to the front side of the stroller, and the rear end of the first link 26 refers to the rear side of the stroller. The second connecting rod 29 and the fourth connecting rod 31 are both bent pipes, so that the wheel can be conveniently installed.

The connecting corner piece comprises an inner corner piece 2801 and an outer corner piece 2802 which are buckled with each other, wherein the inner corner piece 2801 and the outer corner piece 2802 are both in a long strip shape, and grooves and holes are processed for being fixedly connected or hinged with corresponding connecting rods. Connecting rods 44 are further mounted between adjacent connecting corner pieces 28, and the two connecting rods 44 and the two first connecting rods 26 can form a ring shape for receiving the seat basket.

In another embodiment: the whole rectangle ring-shaped that is of first link assembly, the semicircle orifice that extends along its width direction all is opened at the middle part of interior corner fitting 2801 and outer corner fitting 2802, and two semicircle orifices butt joints behind interior corner fitting 2801 and the lock of outer corner fitting 2802 form the circular port. The inner corner 2801 and the outer corner 2802 are respectively fastened at two ends of two long edges of the first link assembly through the semicircular holes, round holes are formed in one ends, close to the seat basket, of the four groups of inner corner 2801 and outer corner 2802, and the first L-shaped supporting rod 38 and the second L-shaped supporting rod 39 are connected with the corresponding inner corner and outer corner through the round holes and are used for supporting the seat basket. The ends of the four

inner corner members

2801 and 2802 away from the pannier are provided with open slots, and are hinged to the corresponding fourth link 31 or fifth link 32 through the open slots. The first drive motor 25 and the second drive motor 33 are both mounted to the end of the outer corner member 2802 remote from the seat basket.

The first bar 3001 is located at the front side of the stroller and the second bar 3002 is located at the rear side of the stroller.

A fifth connecting rod assembly and a second driving motor 33; the fifth connecting rod assembly is arranged between the first connecting rod assembly and the second connecting rod assembly, the fifth connecting rod assembly comprises two fifth connecting rods 32, the two fifth connecting rods 32 are oppositely arranged, one ends of the two fifth connecting rods 32 are hinged to the corresponding first connecting rods 26 through connecting angle pieces 28, the other ends of the two fifth connecting rods 32 are hinged to the second connecting rods, the second driving motor 33 is installed on the outer angle piece 2802, close to one of the front wheels, of the first connecting rods, the output shaft of the second driving motor 33 is in key connection with the second long shaft 3301, the second long shaft 3301 is rotatably installed on the two connecting angle pieces close to the fifth connecting rods through the frame bearing 41, and the two fifth connecting rods 31 are driven to swing. According to kinematic analysis, the degree of freedom of the closed four-bar linkage structure is 1, and the degree of freedom of the closed five-bar linkage structure is 2, so that when the polygonal frame is a quadrilateral, one driving motor is arranged to control the shape change of the polygon, and when the polygonal frame is a pentagonal, two driving motors are arranged. Therefore, the shape and the movement of the polygonal frame can be controlled by controlling the rotation of the driving motor and the swinging of the fourth connecting rod 31 and the fifth connecting rod 32, so that the first connecting rod 26 is always kept in a horizontal state, and the comfort of the baby is improved. In other embodiments, the polygonal frame may also be a closed and hinged hexagon, heptagon, etc., and the number of the movable driving motors mounted on the corresponding polygonal frame is equal to the number of the degrees of freedom of the corresponding polygonal frame.

The seat basket comprises a first U-shaped frame 34, a second U-shaped frame 35, a handle 36, a long pin shaft 37 and a seat basket support; the seat basket supporting member is installed on the first link assembly, the open end of the first U-shaped frame 34 is butted with the open end of the second U-shaped frame 35, and the first U-shaped frame and the second U-shaped frame are connected into a basket through a long pin shaft 37, the basket is installed on the seat basket supporting member, the handle 36 is installed on the long pin shaft 37, the camera 23 is installed on the handle 36, and the ranging radar 24 is installed at the front end of the second U-shaped frame 35. Wherein, a cushion 42 and a foot pad 43 are arranged in the basket, and a sunshade 45 is also arranged at the position close to the U-shaped push rod 21, thereby further improving the comfort of the baby.

The seat basket supporting piece comprises two first L-shaped supporting rods 38, two second L-shaped supporting rods 39 and two second round joints 40, one ends of the two first L-shaped supporting rods 38 are respectively connected with the connecting angle pieces 28 at the front ends of the two first connecting rods 26, one ends of the two second L-shaped supporting rods 39 are respectively connected with the connecting angle pieces 28 at the rear ends of the two first connecting rods 26, and the other ends of the first L-shaped supporting rods 38 are connected with the other ends of the second L-shaped supporting rods 39 located on the same side through the second round joints 40. Two second round joints 40 are used to mount the first U-shaped frame 34.

As shown in fig. 5-11, the wheel 22 includes a hub 1, a spline shaft 2, a first pushing assembly, a wheel motor 15, a flange 14, a side end cap 12, and a plurality of arc-shaped claws 3 that can enclose a complete circle; the outer circumference of the hub 1 is provided with a plurality of bosses 101 which are uniformly distributed, the arc-shaped claws 3 are hinged with the corresponding bosses 101, the center of the hub 1 is provided with a first through hole 102, the first pushing assembly is positioned at one side of the hub 1, the output end of the first pushing assembly is connected with the arc-shaped claws 3 in a sliding manner, and the center of the first pushing assembly is provided with a second through hole 402; the flange 14 is fixedly arranged on the other side of the hub 1, a third through hole is formed in the center of the flange 14, and a first ring of internal splines matched with the spline shaft 2 are arranged in the third through hole; the side end cover 12 is positioned at one side of the first pushing assembly, the side end cover 12 is fixedly installed on the hub 1, at least one part of the side end cover 23 is in contact with the first pushing assembly, a fourth through hole 1201 is formed in the center of the side end cover 12, the spline shaft 2 is movably arranged in an inner cavity surrounded by the first through hole 102, the second through hole 402, the third through hole and the fourth through hole 1201, the output end of the wheel motor 15 is movably connected with the spline shaft 2, the hub 1 is installed at the bottom ends of the second connecting rod 29 and the fourth connecting rod 31 through the flange 14 and the side end cover 12, and when the spline shaft 2 is meshed with the first ring of internal splines, the hub 1 drives the arc-shaped claw 3 to rotate so as to realize flat ground movement or stair climbing; when the spline shaft 2 is engaged with the first pushing assembly, the first pushing assembly drives the arc-shaped claw 3 to extend or retract, the arc-shaped claw 3 extends, the wheel can be used for climbing stairs or passing uneven road surfaces, the arc-shaped claw 3 retracts to be circular, and the wheel is used for passing the flat road surfaces.

The four arc claws 3 are evenly distributed along the outer circumference of the hub 1 and can form a complete circle. The spline shaft 2 can move back and forth on the axes of the hub 1 and the first pushing piece and is respectively meshed with the hub 1 or the first pushing component for transmission, so that the flat ground movement and the stair climbing are realized. When the road surface is flat, the four arc claws 3 are coated on the periphery of the hub 1, the spline shaft 2 is meshed with the flange 14 to drive the wheel 22 to rotate, and the four arc claws 3 are used as wheels; when encountering stairs, the spline shaft 2 is meshed with a first pushing assembly (namely the spiral disk 4) to drive the first pushing assembly to rotate, so that the four arc-shaped claws 3 respectively extend outwards, after reaching the height matched with the stairs, the spline shaft 2 returns to be meshed with the flange 14, and the hub 1 rotates to drive the opened arc-shaped claws 3 to climb the stairs. After the stair climbing is finished, the spline shaft 2 is meshed with the spiral disc 4 for transmission again, so that the arc-shaped claw 3 retracts to be in a complete circle shape. The wheel can be switched back and forth between the flat ground and the stairs, the operation is smooth, and the practicability is high.

In another embodiment, the flange 14 may not be provided, and the internal spline that mates with the spline shaft 2 may be provided directly in the first through hole 102 of the hub 1.

As shown in fig. 12, the spline shaft 2 has a first ring of external splines 201 matched with the hub 1 and a second ring of external splines 202 matched with the first pushing assembly, and the distance between the first ring of external splines 201 and the second ring of external splines 202 is greater than the distance between the flange 14 and the spiral disk 4 (i.e., the distance between the first through hole 102 and the second through hole 402). The arrangement can enable the spline shaft 2 and the hub 1 or the spiral disk 4 to be driven independently, and the arc-shaped claws can rotate, extend and retract respectively to adapt to flat road surfaces and stairs. One end of the spline shaft 2 close to the flange 14 is provided with a convex transmission groove 204, the output end of the wheel motor 15 is connected with the transmission groove 204 of the spline shaft 2, and the length of the transmission groove 204 is greater than the moving distance of the spline shaft 2. An output shaft 1501 of the wheel motor 15 is slidably connected with the transmission groove 204 of the spline shaft 2, specifically, the output shaft 1501 of the wheel motor is provided with a connecting key 1502, and the connecting key 1502 is clamped in the transmission groove 204 for transmission; the length of the transmission groove 204 is greater than that of the connecting key 1502, so that the transmission is not affected while the spline shaft 2 can move back and forth.

In another embodiment, the spline shaft 2 can be designed to have only one circle of external splines, when the arc-shaped claws 3 need to rotate, the external splines of the spline shaft 2 are meshed with the hub 1 for transmission, and when the arc-shaped claws 3 need to extend or retract, the external splines of the spline shaft 2 are meshed with the spiral disk 4 for transmission.

As shown in fig. 11-16, the first pushing assembly includes a spiral disk 4 and a first pushing rod 5, the spiral disk 4 is positioned at one side of the hub 1, a spiral line groove 401 is arranged at one side of the spiral disk 4 close to the hub 1, the first push rod 5 is provided with a convex groove 501 which is matched with the spiral groove 401 for transmission, the hub 1 is provided with a plurality of sliding grooves 103 which are communicated with the first through hole 102 along the radial direction, the first push rod 5 can be slidably arranged in the sliding grooves 103, and is in matched transmission with the spiral line groove 401 through the convex groove 501, the outer end of the first push rod 5 is connected with the corresponding arc claw 3 in a sliding way, a second through hole 402 is formed in the center of the spiral disc 4, a second ring of inner splines 403 matched with the second ring of outer splines 202 is arranged in the second through hole 402, and the distance between the first ring of outer splines 201 and the second ring of outer splines 202 is greater than the distance between the hub 1 and the spiral disc 4. Spiral line groove 401 of spiral disk 4 one side is the involute helix, when the second circle internal spline 403 meshing of second circle external spline 202 of integral key shaft 2 and spiral disk 4, the first circle external spline 201 of integral key shaft 2 and the first circle external spline of flange 14, at this moment, integral key shaft 2 drives spiral disk 4 and rotates, and synchronous drive first push rod 5 stretches out or contracts along spout 103 to make arc claw 3 stretch out or contract, realizes the level land removal of wheel and climbs the building.

A circular groove 104 is formed on one side of the hub 1, and the spiral disk 4 is positioned in the circular groove 104. This arrangement may improve the stability of the spiral disk 4. The side wall of the sliding groove 103 is provided with a convex block 105, and two sides of the first push rod 5 are provided with strip-shaped grooves 502 corresponding to the convex block 105. The stability of the movement of the first push rod 5 is ensured by the convex blocks 105 and the strip-shaped grooves 502. An included angle is formed between the center line of the boss 101 of the hub 1 and the sliding groove 103. The boss 101 and the sliding groove 103 are not collinear, so that the first push rod 5 can drive the arc-shaped claw 3 to expand or retract.

The inner side of the arc-shaped claw 3 is provided with a T-shaped groove 301, one end of the first push rod 5, which is close to the first through hole 102, is provided with an arc surface 503 matched with the first through hole 102 of the hub 1, one end of the first push rod 5, which is far away from the first through hole 102, is provided with a round hole, a short pin shaft penetrates through the round hole, two ends of the short pin shaft are respectively provided with a rolling bearing 504, and the two rolling bearings 504 can be arranged in the corresponding T-shaped grooves of the arc-shaped claw 3 in a rolling manner. Through the arrangement of the T-shaped groove 301 and the rolling bearing 504, the first push rod 4 can drive the arc-shaped claw 3 conveniently, and the extending and retracting actions can be completed.

The wheel also comprises a second pushing assembly, at least one part of the second pushing assembly is arranged in the inner cavity of the spline shaft 2, and the output end of the second pushing assembly is connected with the spline shaft 2. The second pushing assembly is used for pushing the spline shaft 2 to move so as to enable the spline shaft to be in matched transmission with the flange 14 or the spiral disk 4.

The second pushing assembly comprises a coil 6, an elastic piece 7, a protective shell 8 and a second push rod 9; at least one part of protective housing 8 sets up in the inner chamber of integral key shaft 2, another part of protective housing 8 is located fourth through hole 1201, coil 3 is located protective housing 8, second push rod 9 is located coil 6, the one end of second push rod 9 extends to the outside of protective housing 8, the other end of second push rod 9 passes behind the protective housing 8 and is connected with integral key shaft 2, the one end of second push rod 9 is provided with retaining ring 10, the one end of second push rod 9 is located to elastic component 7 cover, just the one end and the retaining ring 10 butt of elastic component 7, the other end and the protective housing 8 butt of elastic component 7.

Wherein, the elastic element 7 is a conical spring. The coil 6 is electrified, the second push rod 9 moves forwards to push the first circle of external splines 201 of the spline shaft 2 to be separated from the first circle of internal splines of the flange 14, and the second circle of external splines 202 of the spline shaft 2 are meshed with the second circle of internal splines 403 of the spiral disc 4, so that the spiral disc 4 is driven to rotate, and the first push rod 5 drives the arc-shaped claw 3 to extend or retract. And the coil 6 is powered off, the second push rod 9 is restored under the traction of the conical spring, and the first circle of external splines 201 of the spline shaft 2 and the first circle of internal splines of the flange 14 are meshed and rotate to drive the wheel to rotate.

The protective shell 8 comprises a cylindrical shell 801, a first transparent cover 802 and a second transparent cover 803; at least one part of the shell 801 is arranged in an inner cavity of the spline shaft 2, the first transparent cover 802 is buckled at one end, close to the spline shaft 2, of the shell 801, the second transparent cover 803 is buckled at one end, far away from the spline shaft 2, of the shell 801, two ends of the second push rod 9 respectively penetrate through the first transparent cover 802 and the second transparent cover 803, a small-diameter end of the conical spring is abutted with the check ring 10, and a large-diameter end of the cylindrical spring is abutted with the second transparent cover 803.

Still include dog 11, integral key shaft 2 is opened there is constant head tank 203, dog 11 fixed mounting is in this constant head tank 203, dog 11 is opened there is the round hole, the other end of second push rod 9 is arranged in this round hole to with round hole clearance fit, the other end of second push rod 9 still is provided with two shoulders at the interval, two shoulders are located the front and back of dog respectively. Through the arrangement, the second push rod 9 can drive the spline shaft 2 to move back and forth, but the second push rod 9 does not rotate along with the spline shaft 2.

The brake disc 13 is arranged at one end of the second push rod 9, and a space is formed between the brake disc 13 and the side end cover 12, and the space is equal to the moving distance of the spline shaft 2. When the spline shaft 2 moves forward and the second circle of external splines 202 is engaged with the second circle of internal splines 403, the brake disc abuts against the side end cap 12, and the brake disc 13 prevents the side end cap 12 and the hub 1 from rotating along with the spiral disc 4 due to friction force, so that the arc-shaped claws 3 extend out or retract smoothly.

The hub 1, the side end cover 12, the spiral disc 4 and the flange 14 are all concentric, and the circle centers of the first through hole 102, the second through hole 402, the third through hole and the fourth through hole 1201 are collinear, so that spline shaft transmission is facilitated.

Further comprises a U-shaped bracket 16, a first bearing 17 and a second bearing 18; the hub 1, the side end cover 12 and the spiral disc 4 are all arranged in a U-shaped opening 1601 of the U-shaped support 16, a first connection end 1602 of the U-shaped support 16 is connected with an outer cylindrical surface of the side end cover 12 through a first bearing 17, a second connection end 1603 of the U-shaped support 16 is connected with an outer cylindrical surface of the flange 14 through a second bearing 18, the brake disc 13 is wrapped on the periphery of the first connection end 1602 of the U-shaped support 16, an opening 1301 is formed in the upper end of the brake disc 13, and the width of the opening 1301 is larger than that of the first connection end 1602 of the U-shaped support 16. Brake disc 13 is provided with an opening 1301 for facilitating the movement of brake disc 13. The wheel 22 is mounted to the bottom ends of the second link 29 and the fourth link 31 by the U-shaped bracket 16.

The bearing protection structure further comprises a bearing transparent cover 19, the bearing transparent cover 19 is covered on the outer side of the first bearing 17, the bearing transparent cover 19 is installed at the first connecting end 1602 of the U-shaped support 16 through a screw, and the second transparent cover 803 of the protection shell 8 is connected with the first bearing transparent cover 19. Specifically, the frame bearing 41 is also provided with a bearing transparent cover, and a dust cover is further arranged at the corresponding position of the polygonal frame.

The U-shaped bracket is characterized by further comprising a semicircular bearing sleeve 20, the first connecting end 1602 and the second connecting end 1603 of the U-shaped bracket 16 are both semicircular rings, the semicircular bearing sleeve 20 is in butt joint with the semicircular rings, and the first bearing 17 and the second bearing 18 are respectively installed in the space where the semicircular bearing sleeve 20 is in butt joint with the semicircular rings.

The vehicle-mounted type wheel hub further comprises a supporting sleeve 1504 and a motor mounting plate 1503, wherein one side of the supporting sleeve 1504 is mounted on the second connecting end 1603 of the U-shaped support 16 and the semicircular bearing sleeve 20, the motor mounting plate 1503 is mounted on the other side of the supporting sleeve 1504, the wheel motor is mounted on the motor mounting plate 1503, and an output shaft 1501 of the wheel motor sequentially penetrates through the motor mounting plate 1503 and the supporting sleeve 1504 to be movably connected with the spline shaft 2.

The working process of the wheel is as follows: the coil 6 at the center of the wheel is electrified, the second push rod 9 extends forwards to drive the stop block 11 to move, the stop block 11 drives the spline shaft 2 to move forwards, meanwhile, the second push rod 9 drives the brake disc 13 to move towards the side end cover 12, the first circle of external splines 201 at the middle position of the spline shaft 2 are separated from the first circle of internal splines of the flange 14, the second circle of external splines 202 of the spline shaft 2 are engaged with the second circle of internal splines 403 of the spiral disc 4, at this time, the brake disc 13 is contacted with the side end cover 12, because of frictional force, wheel hub 1 can' T rotate, and the wheel motor drives integral key shaft 2 and rotates, and integral key shaft 2 drives spiral disk 4 and rotates, and first push rod 5 radially outwards moves along spiral disk 4, and antifriction bearing 504 of the outside one end of first push rod 5 slides in the T type recess 301 of arc claw 3, backs up arc claw 3, and the position and the angle that arc claw 3 opened are for stair height adjustment. At this moment, the coil 6 is powered off and reset, the elastic piece 7 drives the second push rod 9 to retract, the stop block 11 is driven, the stop block 11 drives the spline shaft 2 to move towards the initial position, the spline shaft 2 is separated from the spiral disc 4, the brake disc 13 is separated from the side end cover 12, the first circle of external splines of the spline shaft 2 is re-engaged with the first circle of internal splines of the flange 14, the hub 1 is driven to rotate, and stair climbing is completed.

After climbing stairs, the coil 6 is electrified, the second push rod 9 extends forwards to drive the stop block 11 to move, the stop block 11 drives the spline shaft 2 to move forwards, meanwhile, the second push rod 9 drives the brake disc 13 to move towards the side end cover 12, the first circle of external splines 201 at the middle position of the spline shaft 2 are separated from the first circle of internal splines of the flange 14, the second circle of external splines 202 of the spline shaft 2 are meshed with the second circle of internal splines 403 of the spiral disc 4, at the moment, the brake disc 13 is contacted with the side end cover 12, the hub 1 cannot rotate due to friction, at the moment, the wheel motor drives the spline shaft 2 to rotate, the spline shaft 2 drives the spiral disc 4 to rotate reversely, the spiral disc 4 is in transmission with the first push rod 5, the first push rod 5 moves inwards along the radial direction of the spiral disc 4, the rolling bearing 504 at one end of the outer side of the first push rod 5 moves towards the initial position in the T-shaped groove 301, until the arc claw 3 is retracted to the initial position. Then the coil is cut off the power and reset, the spline shaft 2 returns to the initial position, and the wheel motor can drive the wheel to normally roll.

The spline shaft 2 is assembled in a mode that the spline shaft 2 and the second push rod 9 move along the axis, and the spline shaft 2 can rotate relative to the second push rod 9 without mutual influence. Because the spiral line groove 401 and the protruding groove 501 between the first push rod 5 and the spiral disk 4 can be reversely self-locked, when the spline shaft 2 does not drive the spiral disk 4 to rotate, the first push rod 5 cannot move relative to the spiral disk 4, and the fixed position is kept. Then the wheel motor drives the spline shaft 2 to rotate, the spline shaft 2 is meshed with the flange 14 for transmission, and the arc-shaped claw 3 can grab the stairs to finish continuous stair climbing.

The first circle of external splines 201 and the second circle of external splines 202 of the spline shaft 2 are both processed with inclined planes 205 for guiding and aligning, the side of the second circle of internal splines 403 of the spiral disk 4 facing the second circle of external splines 202 is processed with inclined planes 205 for guiding and aligning, and the side of the first circle of internal splines of the flange 14 facing the wheel motor is processed with inclined planes 205 for guiding and aligning. These guiding and aligning slopes 205 ensure that the second push rod 9 can be aligned and engaged with the spiral disk 4 and the flange 14 respectively when driving the spline shaft 2 to move back and forth.

The baby carriage is simple and compact in structure, overall in mass and small in size, can control the baby carriage to automatically walk by adopting the existing intelligent algorithm, and monitors the state of a baby through the camera. The arc-shaped claws of the wheels can extend outwards to climb the stairs, so that the baby carriage can climb the stairs automatically; in the process of climbing stairs, the angle and the position of the baby carriage seat basket can be changed through the deformation matching adjustment of the polygonal frame. The baby stroller improves the comfort of a baby in the climbing process, and can be used for solving the problems that the baby stroller is difficult to climb stairs, difficult to push and pull and the like in urban roads.

The above-mentioned embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. A multifunctional baby carriage is characterized in that: the device comprises a polygonal frame, a seat basket, a U-shaped push rod, wheels, a camera and a distance measuring radar; the polygonal frame comprises a first driving motor, and a first connecting rod assembly, a second connecting rod assembly, a third connecting rod assembly and a fourth connecting rod assembly which are sequentially hinged; the first driving motor is installed on the first connecting rod assembly, an output shaft of the first driving motor is connected with the fourth connecting rod assembly, the seat basket is installed on the first connecting rod assembly, the wheels are installed at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly respectively, the U-shaped push rod is installed on the first connecting rod assembly, the range radar is installed on the seat basket and the U-shaped push rod respectively, and the camera is installed on the seat basket.

2. The multi-function stroller of claim 1, wherein: the first connecting rod component comprises a first connecting rod, a first round joint and a connecting angle piece; two first connecting rods set up relatively, and first round joint is all installed at the middle part of two first connecting rods, and the connection corner fittings is all installed at the both ends of two first connecting rods, second connecting rod subassembly is articulated through the one end of connecting corner fittings and two first connecting rods, fourth connecting rod subassembly is articulated through the other end of connecting corner fittings and two first connecting rods, the seat basket is connected with the connection corner fittings at first connecting rod both ends, the both open ends of U-shaped push rod are connected with two first round joints respectively, first driving motor installs in the connection corner fittings that is close to fourth connecting rod subassembly.

3. The multi-function stroller of claim 1, wherein: the third connecting rod assembly comprises a third connecting rod, a first supporting rod and a second supporting rod; the first supporting rod is installed at one end of the third connecting rod, the second supporting rod is installed at the other end of the third connecting rod, the two ends of the first supporting rod are hinged to the second connecting rod assembly, and the two ends of the second supporting rod are hinged to the fourth connecting rod assembly.

4. The multi-function stroller of claim 1, wherein: the device also comprises a fifth connecting rod assembly and a second driving motor; the fifth connecting rod assembly comprises two fifth connecting rods, the two fifth connecting rods are arranged oppositely, one ends of the two fifth connecting rods are hinged to the first connecting rod assembly, the other ends of the two fifth connecting rods are hinged to the second connecting rod assembly, the second driving motor is installed on the first connecting rod assembly, and an output shaft of the second driving motor is connected with the two fifth connecting rods.

5. The multi-function stroller of claim 1, wherein: the wheel comprises a hub, a spline shaft, a first pushing assembly, a wheel motor, a flange, a side end cover and a plurality of arc-shaped claws which can be enclosed into a complete circle; the outer circumference of the hub is provided with a plurality of bosses which are uniformly distributed, the arc-shaped claws are hinged with the corresponding bosses, a first through hole is formed in the center of the hub, the first pushing assembly is positioned on one side of the hub, the output end of the first pushing assembly is slidably connected with the arc-shaped claws, and a second through hole is formed in the center of the first pushing assembly; the flange is fixedly arranged on the other side of the hub, a third through hole is formed in the center of the flange, and a first circle of internal splines matched with the spline shaft are arranged in the third through hole; the side end cover is positioned on one side of the first pushing assembly, the side end cover is fixedly installed on the wheel hub, at least one part of the side end cover is in contact with the first pushing assembly, a fourth through hole is formed in the center of the side end cover, the spline shaft is movably arranged in an inner cavity defined by the first through hole, the second through hole, the third through hole and the fourth through hole, the output end of the wheel motor is movably connected with the spline shaft, the wheel hub is installed at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly through a flange and the side end cover, when the spline shaft is meshed with the first circle of internal spline, the wheel hub drives the arc-shaped claw to rotate, and when the spline shaft is meshed with the first pushing assembly, the first pushing assembly drives the arc-shaped claw.

6. The multi-function stroller of claim 5, wherein: first promotion subassembly includes spiral plate and first push rod, the spiral plate is located wheel hub's one side, the spiral plate is close to wheel hub's one side and has opened the spiral groove, first push rod open have with spiral groove cooperation driven protruding groove, wheel hub has the spout of a plurality of and first through-hole intercommunication along its radial division, install in the spout first push rod slidable to through protruding groove and spiral groove cooperation transmission, the outer end and the corresponding arc claw slidable ground of first push rod are connected, the center of spiral plate is opened there is the second through-hole, is provided with in the second through-hole and encloses the internal spline with integral key shaft matched with second, and when integral key shaft and second circle internal spline meshing, the spiral plate drives the arc claw and stretches out or retract.

7. The multi-function stroller of claim 5, wherein: the second pushing assembly comprises a coil, an elastic piece, a protective shell and a second push rod; at least one part of protective housing sets up in the inner chamber of integral key shaft, another part of protective housing is located the fourth through hole, the coil is located the protective housing, the second push rod is located the coil, the one end of second push rod extends to the outside of protective housing, the other end of second push rod passes and is connected with the integral key shaft behind the protective housing, the one end of second push rod is provided with the retaining ring, the one end of second push rod is located to the elastic component cover, just the one end and the retaining ring butt of elastic component, the other end and the protective housing butt of elastic component.

8. The multi-function stroller of claim 5, wherein: the wheel also comprises a brake disc, the brake disc is installed at one end of the second push rod, a space is formed between the brake disc and the side end cover, and the space is equal to the moving distance of the spline shaft.

9. The multi-function stroller of claim 5, wherein: the wheel further comprises a U-shaped bracket, a first bearing and a second bearing; the wheel hub, the side end cover and the spiral disc are all arranged in a U-shaped opening of the U-shaped support, a first connecting end of the U-shaped support is connected with an outer cylindrical surface of the side end cover through a first bearing, a second connecting end of the U-shaped support is connected with an outer cylindrical surface of the flange through a second bearing, the brake disc is coated on the periphery of the first connecting end of the U-shaped support, an opening is formed in the upper end of the brake disc, the width of the opening is larger than that of the first connecting end of the U-shaped support, and the wheel is mounted at the bottom ends of the second connecting rod assembly and the fourth connecting rod assembly through the U-shaped support.

10. The multi-function stroller of claim 1, wherein: the seat basket comprises a first U-shaped frame, a second U-shaped frame, a handle, a long pin shaft and a seat basket supporting piece; the seat basket supporting piece is installed on the first connecting rod assembly, the open end of the first U-shaped frame is in butt joint with the open end of the second U-shaped frame, the first U-shaped frame and the second U-shaped frame are connected into a whole through a long pin shaft to form a basket, the basket is installed on the seat basket supporting piece, the handle is installed on the long pin shaft, the camera is installed on the handle, and the ranging radar is installed on the second U-shaped frame.