CN110979437A

CN110979437A - Baby stroller with function of pedal vehicle

Info

Publication number: CN110979437A
Application number: CN201911344386.7A
Authority: CN
Inventors: 沈小东
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-25
Filing date: 2019-12-23
Publication date: 2020-04-10
Also published as: CN211869484U

Abstract

The invention provides a baby stroller with a bicycle function, which comprises a frame, wherein the frame comprises a main support seat, a front tube group is hinged to the front side of the main support seat, a pair of front wheel groups capable of rotating are arranged on two sides below the front tube group, lower support tubes are connected to two sides of the rear part of the main support seat, rear wheels capable of rotating are hinged to the lower ends of the lower support tubes, handrails are hinged to the upper ends of the lower support tubes, a seat is detachably connected to the main support seat, a vertically arranged handle is detachably connected to the front tube group, a pedal group is arranged on the inner side of the front wheel, the pedal group comprises a continuous and reversely bent pedal rod, a pair of pedals are fixed to the pedal rod, two ends of the pedal rod are connected with the front wheels and drive the front wheels to rotate, the using state of the baby stroller can be conveniently changed by using the detachably connected seat and pedal accessories, the baby stroller is.

Description

Baby stroller with function of pedal vehicle

Technical Field

The invention relates to a baby stroller with a bicycle function.

Background

High view baby's handcart function singleness on the existing market, only two kinds of modes provide just born to the baby about 2 years old and use, first mode adds the neonate's bed of sleeping basket and second kind mode regulation sleeping basket angle provides the baby of 1 year to 2 years old and sits the use, and the cost is high, and the practicality is not strong, and the live time is not very long, accounts for the space, and weight is overweight.

Disclosure of Invention

The invention improves the problems, namely the technical problems to be solved by the invention are that the existing baby carriage has short service time, single function and space occupation.

The specific embodiment of the invention is as follows: the utility model provides a baby's shallow of area bicycle function, includes the frame, the frame includes the main tributary supporting seat, the front side of main tributary supporting seat articulates there is the preceding nest of tubes, preceding nest of tubes below both sides are provided with can a pair of preceding wheelset of pivoted, the rear portion both sides of main tributary supporting seat are connected with the stay tube down, and the lower extreme of each stay tube articulates there is can the pivoted rear wheel down, and the upper end of a pair of stay tube articulates there is the handrail down, main tributary supporting seat releasable connection has the seat, releasable connection has the hand (hold) of vertical setting on the preceding nest of tubes, the inboard of front wheel is provided with pedal group, pedal group is including the pedal rod of continuous reverse buckling, the last of pedal rod is fixed with a pair of footboard, the both ends and a pair of front.

Further, the inboard cradle supporting seat that is fixed with of handrail lower part, cradle supporting seat upper portion is provided with the basket of sleeping, the both sides of sleeping the basket have the inserted block that can insert the cradle supporting seat, inserted block and cradle supporting seat snap-fit.

Furthermore, the lower supporting tube is hinged to the side of the main supporting seat, and the armrest and the main supporting seat are fixedly connected with a rear supporting tube.

Furthermore, the front wheel group comprises a front wheel group support frame and a front wheel which is hinged to the lower portion of the front wheel group support frame and can rotate, pedal connecting shafts which are coaxially arranged with the axle center of the front wheel extend from two ends of the pedal rod, a central shaft which penetrates through the axle center of the front wheel is coaxially fixed on the pedal connecting shafts positioned on two sides of the pedal rod, a driving gear is fixed on the central shaft, a gear fixing plate is coaxially fixed on the side portion of the front wheel, a gear clamping block is hinged to the gear fixing plate through a torsional spring, the gear clamping block and the driving gear form a ratchet mechanism to achieve one-way rotation of the front wheel, a gear cover which is sleeved on the central shaft and is fixedly connected with the gear fixing plate is arranged.

Further, preceding nest of tubes includes front side horizontal pole and rear side vertical pole, the lower part has the articulated screw that runs through rear side vertical pole and main tributary supporting seat in the hand (hold), the bottom screw-thread fit that articulated screw runs through rear side vertical pole and main tributary supporting seat has lock nut, hand (hold) and rear side vertical pole fixed connection, thereby rear side vertical pole and main tributary supporting seat realize that the hand (hold) drives preceding nest of tubes and rotates around articulated screw department.

Furthermore, front wheel fixing seats are fixed at two ends of the front side cross rod, and a front wheel set vertical shaft inserted into the front wheel fixing seats is fixed at the upper end of the front wheel set supporting frame; the outer surface of the vertical shaft of the front wheel set is provided with an annular clamping groove, a front wheel fixing piece which is sleeved on the vertical shaft of the front wheel set and is buckled in the annular clamping groove is fixed in the front group fixing seat, the front wheel fixing plate is provided with a round hole which can be sleeved into a vertical shaft of the front wheel set, the front set fixing seat is internally provided with a front wheel limiting bolt which can slide up and down, the top of the front wheel limit bolt is fixedly connected with a shifting sheet, the lower part of the front wheel fixing seat is also fixedly connected with a front wheel fixing seat bottom cover sleeved on the vertical shaft of the front wheel set, the upper end surface of the front wheel group supporting frame is provided with a jack into which a front wheel limit bolt can be inserted, a clamping point spring is fixed in the front group fixing seat, the clamp point spring is characterized in that a cylindrical ejector pin is fixedly connected to the inner side end of the clamp point spring, a plurality of arc-shaped grooves are longitudinally distributed on one side, facing the cylindrical ejector pin, of the front wheel limiting plug pin, and the front wheel limiting slot is limited through the cylindrical ejector pin.

Furthermore, a limit bolt which is positioned in the front end of the main support seat and the screw thread end of which is inserted into the rear side longitudinal rod is also arranged between the front end of the main support seat and the rear side longitudinal rod, a plastic sleeve is fixed in the rear side longitudinal rod, a limit nut which can be in threaded fit with the upper end of the limit bolt is arranged in the plastic sleeve, a bolt groove which can be inserted into the limit bolt is arranged at the front end of the main support seat, the lower end opening of the bolt groove is smaller than the bolt head diameter of the limit bolt, a limit arc-shaped groove for the limit bolt to pass through is arranged on the lower surfaces of the rear side longitudinal rod and the plastic sleeve, a rear wheel fixing seat is fixed at the lower end of the lower support tube, a rear wheel rotating shaft which is inserted into the rear wheel fixing seat is arranged at one end of the rear wheel rotating shaft, an annular fixing groove is arranged on the rear wheel rotating shaft, and a rear wheel fixing sheet which is sleeved on the rear, a brake tube is arranged between the rear wheel fixing seats, rear wheel fixing seat rear covers buckled into the rear wheel fixing seats are fixed at the two end parts of the brake tube, the rear cover of the rear wheel fixing seat can rotate relative to the rear wheel fixing seat, one side of the rear cover of the rear wheel fixing seat extending into the rear wheel fixing seat is fixed with a brake ratchet, a brake shaft capable of axially moving along the rear wheel fixing seat is arranged in the rear wheel fixing seat, one end of the brake shaft facing the brake pipe is provided with a conical surface capable of axially transversely moving in cooperation with the brake ratchet, a front cover of the fixing seat is fixed on one side of the rear wheel fixing seat, which is far away from the rear cover of the fixing seat, a brake shaft return spring is fixed between the brake shaft and the front cover of the fixing seat, the outer side end of the brake shaft penetrates through the front cover of the fixing seat, and the inner side surface of the rear wheel is circumferentially provided with brake holes which can be matched with the brake shaft, the outside of the brake pipe is fixed with a brake pedal, and a shock-absorbing spring is also arranged between the outer side of the lower end part of the lower supporting pipe and the rear wheel fixing seat.

Further, the armrest comprises a lower armrest tube, the upper end of the lower armrest tube is connected with a U-shaped upper armrest tube through an armrest joint group, the armrest joint group comprises an armrest left joint fixed at the upper end of the lower armrest tube and an armrest right joint fixed at the lower end of the upper armrest tube, a first inner gear ring is arranged in the armrest left joint, a second inner gear ring is arranged in the armrest right joint, the armrest left joint and the armrest right joint are oppositely arranged, the armrest left joint and the armrest right joint are connected through a shaft in a shaft axis mode and can rotate relatively, an upper armrest joint gear which is meshed with the first inner gear ring and the second inner gear ring and sleeved on a pin shaft is sleeved on the pin shaft, the joint gear and the armrest left joint are connected through an armrest spring, a button is arranged on the outer side of the armrest right joint, the inner side end of the button penetrates through the armrest right joint, and a protrusion for preventing the armrest from falling off, the joint gear is positioned in the middle of the matching part of the left handrail joint and the right handrail joint, the thickness of the joint gear is less than or equal to the thickness of the inner gear ring of the left handrail joint, the handrail is connected with the upper end of the lower supporting pipe through the car folding joint, the car folding joint comprises a car folding left joint fixed on the upper part of the lower supporting rod and a car folding right joint fixed on the lower handrail, a joint fixture block is fixed in the car folding left joint, a joint screw seat is sleeved in the car folding right joint, an inclined plane is arranged between the joint screw seat and the car folding right joint, the joint fixture block and the left joint are connected through a joint spring to ensure that the joint fixture block is positioned between the car folding right joint and the car folding left joint, the joint fixture block is provided with a convex part along the circumferential direction, the car folding right joint and the car folding left joint are oppositely provided with an inwards concave limiting groove capable of being matched with the joint fixture block, and a, the folding right joint and the folding left joint are internally provided with joint shafts penetrating through the joint spiral seats, the joint springs and the joint clamping blocks, the lower armrest tube is internally provided with a pull rope capable of pulling the joint spiral seats to rotate around the joint shafts, so that the joint clamping blocks overcome the joint springs to separate the joint clamping blocks from the folding right joint, the joints rotate around the joint shafts, the upper stretching end is fixed with a shifting knob, and the shifting knob is in sliding fit with the lower armrest tube.

Further, the fixed pipe of seat rear side fixedly connected with headrest, fixedly connected with headrest on the fixed pipe of headrest, front wheel fixing base lower part fixedly connected with arc braking vane, cradle body upper portion is fixed with hand-basket or ceiling support, ceiling support detachable connection is in cradle or frame.

Further, pedal connecting axle lateral part has the trompil, the pedal pole inserts in the pedal connecting axle towards the one end of front wheel, the tip of pedal pole has annular spacing groove, the inside angular buckle that is fixed with of pedal connecting axle, angular buckle has the snap ring that can buckle into annular spacing groove towards the one end of pedal pole, angular buckle one end is stretched out pedal connecting axle outside, and has the buckle spring that is located pedal connecting axle inside between angular buckle outside end and the wheelset support frame, pedal connecting axle has the channel that stretches out with supply angular buckle one end.

Compared with the prior art, the invention has the following beneficial effects: the baby carriage has a compact structure, can conveniently change the using state of the baby carriage by utilizing the detachably connected seat and the pedal accessories, has wide applicability and is suitable for the old age of the baby.

Drawings

FIG. 1 is a schematic view of the frame structure of the present invention.

Fig. 2 is a schematic view of the seat mode structure of the present invention in use.

FIG. 3 is a schematic view showing the usage state of the four-wheel pedaling mode structure of the present invention.

Fig. 4 is a schematic view showing a first usage state of the sleeping basket structure according to the present invention.

Fig. 5 is a schematic view showing a second usage state of the sleeping basket structure according to the present invention.

FIG. 6 is a front view of a two or four wheel step mode in accordance with an embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of the structure of FIG. 6 according to the present invention.

FIG. 8 is a partial cross-sectional view of the connection portion of the foothold and the front wheel in accordance with the present invention. A

FIG. 9 is a cross-sectional view of the connection structure of the three-handle and the main support frame according to the embodiment.

Fig. 10 is a perspective view of a connection structure of the handle and the main support frame.

Fig. 11 is a structural schematic view of an arc-shaped groove at the bottom of the main support frame.

FIG. 12 is a schematic view of a structure of the front tube set rotated by the handle.

Fig. 13 is an exploded view of the three front wheel fixing seats and the front wheel set according to the embodiment.

Fig. 14 is an enlarged view of a portion of the structure of fig. 12.

Fig. 15 is a schematic sectional view of the assembled state of the front wheel fixing seat and the front wheel set.

Fig. 16 is a schematic view of an exploded structure of a four-armrest joint component according to an embodiment.

Fig. 17 is a schematic view of a bending structure of the fourth upper handrail tube and the fourth lower handrail tube according to the embodiment.

FIG. 18 is a schematic structural view of a fifth folding joint according to the embodiment.

Fig. 19 shows the foldable stroller with the folding joint structure.

Fig. 20 shows a rear wheel structure of a stroller having a sixth embodiment of a brake structure.

Fig. 21 is a schematic view of a rear wheel structure.

Fig. 22 is a broken surface schematic view of an assembly structure of a brake tube and a rear wheel fixing seat.

Fig. 23 is a first structural schematic diagram of the seventh embodiment.

Fig. 24 is a schematic structural diagram of the seventh embodiment.

Fig. 25 is a schematic view of a seventh pedal lever fixing structure of the embodiment.

FIG. 26 is a schematic diagram of a front wheel brake plate structure.

Fig. 27 is a schematic view of a knock pin structure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, a baby stroller with a bicycle function comprises a frame, the frame comprises a main support seat 10, a front tube set 20 is hinged to the front side of the main support seat 10, a pair of front wheel sets 210 capable of rotating are arranged on two sides below the front tube set 20, lower support tubes 110 are connected to two sides of the rear portion of the main support seat, a rear wheel 30 capable of rotating is hinged to the lower end of each lower support tube, an armrest 40 is hinged to the upper end of each lower support tube, a seat 50 is detachably connected to the main support seat, a handle 60 vertically arranged is detachably connected to the front tube set, a pedal set is arranged on the inner side of each front wheel, the pedal set comprises a pedal rod 710 which is continuously and reversely bent, a pair of pedals 720 are fixed to the pedal rod, and two ends of the pedal rod are connected with the pair of front wheels and drive the front wheels to rotate.

In this embodiment, the inside of handrail 40 lower part is fixed with cradle supporting seat 810, cradle supporting seat upper portion is provided with the basket 80 of sleeping, the both sides of sleeping the basket have the inserted block 820 that can insert the cradle supporting seat, inserted block and cradle supporting seat 810 snap-fit, the cradle body can be fixed with block 820 through bolt or other modes, and upper portion can be designed with handle 830 or ceiling support 840.

In this embodiment, the lower support tube is hinged to the side of the main support base, and the armrest 40 is fixedly connected to the rear support tube 120 to realize integral support.

With the above structure, the following modes of conversion can be realized:

as shown in fig. 2, the seat and handle are installed to provide a child aged 1 to 4 years to sit on the seat, and the seat 50 can be fixed to the rear side of the main support base 10 by bolts, and the handle is fixed to the front tube group 20 to assist the armrest or to achieve the operating direction, with the advantages of eliminating the sleeping basket, reducing space, and being lighter and easy to carry by parents.

Fig. 3 shows a four-wheel cycle mode, and the stroller with the seat, the handlebar and the pedal group 70 can be used as a four-wheel cycle for children aged 2 to 6 years, and has the advantages of good stability, high safety, easy riding and easy steering due to the adoption of a four-wheel structure.

As shown in figures 4 and 5, a newborn can be provided to sleep by lying down to about 1 year old by installing the sleeping basket, the sleeping basket can be installed in a horizontal position forward direction and also can be installed in a horizontal position reverse direction, so that adults can observe babies conveniently, the ceiling can be arranged at the top of the sleeping basket, sunlight can be prevented from directly irradiating eyes, the lifting handle is installed in the middle of the sleeping basket, and the sleeping basket can be used for sitting by children from 1 year old to 3 years old according to the specific size configuration of the sleeping basket. In the above-described embodiment of the present invention,

example two: in this embodiment, the front wheel set 210 includes a front wheel set support frame 211 and a front wheel 212 hinged to the lower portion of the front wheel set support frame and capable of rotating, a pedal connecting shaft 213 coaxially disposed with the center of the front wheel extends from both ends of the pedal rod, a central shaft 214 penetrating through the center of the front wheel is coaxially fixed to the pedal connecting shafts on both sides of the pedal rod, a driving gear 215 is fixed to the central shaft, a gear fixing plate 216 is coaxially fixed to the front wheel side, a gear clamping block 218 is hinged to the gear fixing plate 216 through a torsion spring 217, the gear clamping block and the driving gear form a ratchet mechanism to realize unidirectional rotation of the front wheel, a gear cover 219 sleeved on the central shaft and fixedly connected to the gear fixing plate is provided outside the driving gear, and the lower portion of the front wheel set.

In this embodiment, the gear fixing plate 216, the torsion spring 217 and the gear clamping block 218 form a ratchet mechanism, which is also equivalent to a one-way clutch in the prior art, so as to ensure that the pedal rod 710 drives the driving gear to rotate in the process of stepping, thereby driving the gear fixing plate and the front wheel 212 to rotate, and ensure safety due to the fact that the action gear clamping block of the torsion spring overcomes the situation that the rebound of the torsion spring does not occur when the pedal rod 710 rotates in the reverse direction, thereby avoiding the situation of backward movement.

In this embodiment, in order to realize that hand (hold) 60 operates the rotation that the front wheel group realized the front wheel group, front tube group 20 includes front side horizontal pole 201 and rear side vertical pole 202, the lower part has the articulated screw 203 that runs through rear side vertical pole and main tributary support seat in the hand (hold), the bottom screw-thread fit that articulated screw runs through rear side vertical pole 202 and main tributary support seat has lock nut 204, hand (hold) and rear side vertical pole 202 fixed connection, thereby rear side vertical pole and main tributary support seat realize that the hand (hold) drives front tube group and rotates around articulated screw 203 department.

To ensure lubrication, the mating surface of the rear side vertical rod 202 and the main support seat has a first bearing 2031, and the lower portion of the handle 60 is fixedly connected to the rear side vertical rod 202 by a screw 2021.

In this embodiment, in the actual design that the front side end of the main support frame may be further fixed with a metal connecting sheet 101, the end of the main support frame may be fixedly connected with other connecting fittings so as to adjust the lengths or the assembling holes of different front tube sets more conveniently. In addition, the second bearing 2032 is provided between the lower end of the hinge screw 203 and the front tube set in this embodiment to reduce the wear of the assembly surface.

In this embodiment, a limit bolt 207 which is located in the front end of the main support seat 10 and has a threaded end inserted into the rear side vertical rod is further arranged between the front end and the rear side vertical rod of the main support seat, a plastic sleeve 205 is fixed in the rear side vertical rod, a limit nut 206 which can be in threaded fit with the upper end of the limit bolt is arranged in the plastic sleeve, and a bolt slot 208 which can be inserted into the limit bolt is arranged at the front end of the main support seat. The rear side vertical rod and the lower surface of the plastic sleeve are provided with a limiting arc-shaped groove 209 for a limiting bolt to pass through, the lower end opening of the bolt groove 208 is smaller than the diameter of the bolt head of the limiting bolt, so that when the limiting bolt is detached, namely the limiting bolt is separated from the limiting nut, the limiting bolt falls into the bolt groove 208 along with the action of gravity and cannot fall to the ground, the upper end of the limiting bolt is located in the limiting arc-shaped groove 209 of the rear side vertical rod, and the radian of the limiting arc-shaped groove is the angle of the handle capable of controlling the rotation of the front pipe group 20.

In this example, hand (hold) 60 turns to the left, drives front tube group and front wheel group and turns to, and left front wheel backward rotation this moment, and the gear fixture block in the left front wheel group drives gear and the pedal pole in the left front wheel group and the gear backward rotation in the right front wheel group, and right front wheel and left front wheel opposite direction synchronous revolution this moment, and the gear in the right front wheel group breaks away from the gear fixture block of right front wheel, makes and turns to and can realize, the hand (hold) flexible operation.

In the third embodiment, in the present embodiment, front wheel fixing seats 221 are fixed at two ends of the front cross bar 201, and a front wheel set vertical shaft 222 inserted into the front wheel fixing seats 221 is fixed at the upper end of the front wheel set supporting frame 211; the outer surface of the front wheel set vertical shaft 222 is provided with an annular clamping groove 2221, a front wheel fixing plate 223 which is sleeved on the front wheel set vertical shaft and is buckled in the annular clamping groove 2221 is fixed in the front set fixing seat, the front wheel fixing plate is provided with a round hole 2231 which can be sleeved into the vertical shaft of the front wheel set, the front wheel fixing seat is internally provided with a front wheel limiting bolt 224 which can slide up and down, the top of the front wheel limit bolt is fixedly connected with a shifting sheet 2241, the lower part of the front wheel fixing seat is also fixedly connected with a front wheel fixing seat bottom cover 225 which is sleeved on the vertical shaft of the front wheel set, the upper end surface of the front wheel group supporting frame is provided with a jack 2111 for inserting a front wheel limit bolt, a clamping point spring 225 is fixed in the front group fixing seat, a cylindrical top pin 226 is fixedly connected at the inner side end of the clamping point spring, one side of the front wheel limiting bolt facing the cylindrical ejector pin is longitudinally provided with a plurality of arc-shaped grooves 2261, and the front wheel limiting slot realizes limiting through the cylindrical ejector pin.

In this embodiment, the front wheel set supporting frame 211 is inserted into the front wheel set vertical shaft 222 of the front wheel fixing seat 221 to enable the front wheel set to axially rotate around the front wheel set vertical shaft 222, the front wheel fixing plate 223 is clamped in the annular clamping groove 2221 by using a circular hole so as to limit the front wheel set vertical shaft 222, the front wheel fixing plate 223 can be fixed or propped by using a spring so as to limit the front wheel set vertical shaft 222, after the limit bolt 224 is inserted into the insertion hole 2111 downwards, the front wheel set supporting frame 211 is locked and cannot rotate around the front wheel set vertical shaft 222, a spring pin structure formed by the clamping point spring 225 and the cylindrical top pin 226 can assist in positioning the limit bolt 224, the cylindrical top pin 226 is arc-shaped when being in contact with the arc-shaped groove 2261, when unlocking is needed, the up-and-down movement of the limit bolt 224 is realized by overcoming the friction force between the cylindrical top pin 226 and the arc-shaped groove 2261 and the elastic force of the clamping point spring.

In a fourth embodiment, on the basis of any of the above embodiments, the armrest includes a lower armrest tube 401, the upper end of the lower armrest tube 401 is connected to a U-shaped upper armrest tube 402 through an armrest joint set 420, the armrest joint set includes an armrest left joint 421 fixed at the upper end of the lower armrest tube and an armrest right joint 422 fixed at the lower end of the upper armrest tube, the armrest left joint has a first inner gear ring therein, the armrest right joint has a second inner gear ring therein, the armrest left joint and the armrest right joint have inner cavities facing each other, the armrest left joint and the armrest right joint have axes connected by a shaft to be rotatable relative to each other, the shaft is sleeved with an upper armrest joint gear 423 engaged with the first inner gear ring and the second inner gear ring and sleeved on a pin, the joint gear and the armrest left joint are connected by an armrest spring 424, the armrest right joint has a button 425 outside, the inner side end of the button penetrates through the right armrest joint, the end of the button is provided with a protrusion for preventing the button from being separated from the right armrest joint, the protrusion can ensure that the button cannot be separated from the right armrest joint, the joint gear is located in the middle of the matching position of the left armrest joint and the right armrest joint, and the thickness of the joint gear is smaller than or equal to that of the inner gear ring of the left armrest joint.

Through pressing the button 425, the protrusion propping joint gear 423 is separated from the right armrest joint to enter the left armrest joint by overcoming the elastic force of the spring, so that the left armrest joint and the right armrest joint can rotate to meet the requirement of folding to reduce the space size.

The cradle can also adopt an armrest joint group structure to realize the adjustment of the angle of the cradle. Or directly designing the angle of the cradle according to the requirement.

In the fifth embodiment, the lower armrest tube 401 includes a pair of vehicle folding joints 410 connected to the upper end of the lower support tube 110, the pair of vehicle folding joints 410 includes a vehicle folding left joint 411 fixed to the upper portion of the lower support rod and a vehicle folding right joint 412 fixed to the lower armrest, a joint block 413 is fixed in the vehicle folding left joint, a joint screw seat 414 is sleeved in the vehicle folding right joint, an inclined surface is formed between the joint screw seat and the vehicle folding right joint, the joint block 413 and the left joint 411 are connected through a joint spring 417 to ensure that the joint block is located between the vehicle folding right joint 412 and the vehicle folding left joint 411, the joint block 413 has a protrusion 4131 along the circumferential direction, inward concave limiting grooves 414 capable of being matched with the joint block protrusion are formed on the vehicle folding right joint and the vehicle folding left joint in the opposite direction, a slope surface matched with the joint screw seat inclined surface is further formed in the vehicle folding right joint and the vehicle folding left joint, a through joint screw seat is formed in the vehicle folding right joint and the vehicle folding left, The joint spring and the joint shaft of the joint clamping block are utilized, the pull rope 415 capable of pulling the joint spiral seat to rotate around the joint shaft is arranged in the lower armrest tube, so that the joint clamping block overcomes the joint spring to enable the joint clamping block to be separated from a right joint of a car to be folded, the joint rotates around the joint shaft, the upper stretching end is fixed with a shifting knob 416, the shifting knob is in sliding fit with the lower armrest tube, and after the shifting knob 416 is loosened, the joint spiral seat is synchronously driven to reset through the action of the joint spring 417 and the joint clamping block to reset, and then the shifting knob reset is realized.

As shown in fig. 19, when the lower end of the rear support tube 120 is released from the main support base, the lower support tube is hinged to the side of the main support base, and the armrest 40 and the main support base are retracted into the vehicle body by using the retracting joint.

In a sixth embodiment, a rear wheel fixing seat 310 is fixed at the lower end of the lower support tube 110, a rear wheel rotating shaft 301 inserted into the rear wheel fixing seat is arranged at one end of the rear wheel facing the rear wheel fixing seat 310, an annular fixing groove 302 is arranged on the rear wheel rotating shaft 301, a rear wheel fixing plate 320 sleeved on the rear wheel rotating shaft 301 and buckled on the annular fixing groove 302 is arranged in the rear wheel fixing seat 310, a brake tube 330 is arranged between the rear wheel fixing seats, rear wheel fixing seat rear covers 340 buckled into the rear wheel fixing seat 310 are fixed at two end portions of the brake tube 330, the rear wheel fixing seat rear cover 340 can rotate relative to the rear wheel fixing seat, a brake ratchet 350 is fixed at one side of the rear wheel fixing seat rear cover extending into the rear wheel fixing seat 310, a brake shaft 360 capable of moving along the axial direction of the rear wheel fixing seat is arranged in the rear wheel fixing seat, a conical surface 361 capable of matching with the brake ratchet is arranged at one end of the brake shaft 360 facing the brake, a fixing seat front cover 351 is fixed on one side of the rear wheel fixing seat 310, which is far away from the fixing seat rear cover 340, a braking shaft return spring 370 is fixed between the braking shaft 360 and the fixing seat front cover 351, the outer side end of the braking shaft 360 penetrates through the fixing seat front cover 351, braking holes 380 which can be matched with the braking shaft are distributed on the inner side surface of the rear wheel along the circumference, and a braking pedal 331 is fixed on the outer portion of the braking tube 330.

When the brake pedal 331 is stepped on during operation, so that the rotation of the brake tube 330 can be realized, the rotation of the brake tube 330 synchronously drives the rear wheel fixing seat rear cover 340 to rotate, the brake ratchet 350 on the inner side of the rear wheel fixing seat rear cover 340 rotates to enable the inclined plane to abut against the brake shaft 360, the brake shaft 360 abuts against the elastic end part of the brake shaft return spring 370 to be inserted into the brake hole 380, so that the rotation of the rear wheel is limited, the other end of the brake pedal 331 is stepped on again to enable the brake tube 330 to rotate reversely, the rear wheel fixing seat rear cover 340 is reset, and the brake shaft 360 is ejected out by the elastic force of the brake shaft return spring 370 to realize unlocking. A shock absorbing spring 390 is also arranged between the outer side of the lower end part of the lower supporting tube and the rear wheel fixing seat.

Seventh embodiment, as shown in fig. 23 to 26, in this embodiment, the ceiling bracket 840 may be detachably connected to the cradle or the rear supporting tube 120, a support is fixed below the ceiling bracket 840, and the support may be fixedly connected to the upper end of the rear supporting tube or the cradle 80.

In this embodiment, the fixed pipe 510 of rear side fixedly connected with headrest of seat 50, fixedly connected with headrest 520 makes things convenient for children's head to lean on the fixed pipe of headrest, in addition front wheel fixing base lower part fixedly connected with arc brake block 230, cradle body upper portion is fixed with hand-basket or ceiling support 840, ceiling support 840 detachable connection in cradle or frame, ceiling support 840 buckle in fig. 22 connect in back stay tube 120, in fig. 23 ceiling support 840 buckle connect in handrail tube 401 down, cradle handle 830 can buckle and connect in lower stay tube 110.

As shown in fig. 24, this embodiment also provides a pedal fixing mode, the pedal connecting shaft 213 has a hole 2131 on its side, one end of the pedal rod 710 facing the front wheel is inserted into the pedal connecting shaft hole 2131, the end of the pedal rod 710 is provided with an annular limiting groove 711, an angular buckle 712 is fixed inside the pedal connecting shaft, one end of the angular buckle 712 facing the pedal rod is provided with a snap ring 713 capable of being buckled into an annular limiting groove, the pedal connecting shaft is provided with a groove 2132 for extending out of one vertical end of the horn-shaped buckle 712, one end of the horn-shaped buckle extends out of the groove 2132 to the outside of the pedal connecting shaft, and a buckle spring 2133 positioned inside the pedal connecting shaft is arranged between the outer side end of the angle-shaped buckle and the wheel set supporting frame, and the angle-shaped buckle 712 of the corner-shaped buckle is pushed against the column angle-shaped buckle 712 by the buckle spring 2133 to force the snap ring 713 of the angle-shaped buckle 712 to buckle the annular limiting groove 711, so that the pedal connecting shaft 213 is fixedly connected with the pedal rod 710.

Eighth embodiment, as shown in fig. 27, in this embodiment, the limit bolt 207 may be replaced with a top pin 2071 penetrating through the main support base 10 of the rear side vertical rod, the top pin 2071 is supported by a top pin spring 2072 at the bottom so as to satisfy the limit of the rear side vertical rod, the top pin 2071 is manually moved downward to separate the main support base 10 from the rear side vertical rod 202, and the side of the top pin 2071 is provided with a dial plate 2073 protruding out of the main support base 10.

Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.

Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.

Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims

1. The utility model provides a baby's shallow of area bicycle function, its characterized in that, which comprises a vehicle rack, the frame includes the main tributary supporting seat, the front side of main tributary supporting seat articulates there is preceding nest of tubes, preceding nest of tubes below both sides are provided with can a pair of preceding wheelset of pivoted, the rear portion both sides of main tributary supporting seat are connected with down the stay tube, and the lower extreme of each down the stay tube articulates there is can pivoted rear wheel, and the upper end of a pair of down the stay tube articulates there is the handrail, main tributary supporting seat releasable connection has the seat, releasable connection has the hand (hold) of vertical setting on the preceding nest of tubes, the inboard of front wheel is provided with pedal group, pedal group is including the pedal rod of continuous reverse buckling, be fixed with a pair of footboard on the pedal rod, the both ends of pedal rod.

2. The stroller of claim 1, wherein a cradle support is fixed to the inner side of the lower portion of the armrest, a sleeping basket is disposed on the upper portion of the cradle support, and insertion blocks capable of being inserted into the cradle support are disposed on both sides of the sleeping basket, and the insertion blocks are in snap-fit engagement with the cradle support.

3. A stroller according to claim 1 or 2, wherein the lower support tube is hinged to the side of the main support frame, and the armrest is fixedly connected to the main support frame and the rear support tube.

4. The stroller according to claim 1 or 2, wherein the front wheel assembly comprises a front wheel assembly support frame and a rotatable front wheel hinged to a lower portion of the front wheel assembly support frame, pedal connecting shafts coaxially disposed with a center of the front wheel extend from two ends of the pedal rod, a central shaft passing through an axis of the front wheel is coaxially fixed to the pedal connecting shafts at two sides of the pedal rod, a driving gear is fixed to the central shaft, a gear fixing plate is coaxially fixed to a side portion of the front wheel, a gear clamping block is hinged to the gear fixing plate through a torsion spring, the gear clamping block and the driving gear form a ratchet mechanism to realize unidirectional rotation of the front wheel, a gear cover is sleeved on the central shaft and fixedly connected with the gear fixing plate is arranged on an outer side of the driving gear, and a lower portion of the front wheel assembly support frame is connected with.

5. A stroller in accordance with claim 4, wherein the front tube set comprises a front cross bar and a rear longitudinal bar, the inner lower portion of the handle has a hinge screw passing through the rear longitudinal bar and the main support base, the hinge screw passing through the rear longitudinal bar and the bottom of the main support base is threadedly engaged with a lock nut, the handle is fixedly connected to the rear longitudinal bar, and the rear longitudinal bar and the main support base are configured such that the handle rotates the front tube set around the hinge screw.

6. The stroller as claimed in claim 5, wherein front wheel holders are fixed to both ends of the front cross bar, and a front wheel vertical shaft inserted into the front wheel holders is fixed to an upper end of the front wheel support frame; the outer surface of the vertical shaft of the front wheel set is provided with an annular clamping groove, a front wheel fixing piece which is sleeved on the vertical shaft of the front wheel set and is buckled in the annular clamping groove is fixed in the front group fixing seat, the front wheel fixing plate is provided with a round hole which can be sleeved into a vertical shaft of the front wheel set, the front set fixing seat is internally provided with a front wheel limiting bolt which can slide up and down, the top of the front wheel limit bolt is fixedly connected with a shifting sheet, the lower part of the front wheel fixing seat is also fixedly connected with a front wheel fixing seat bottom cover sleeved on the vertical shaft of the front wheel set, the upper end surface of the front wheel group supporting frame is provided with a jack into which a front wheel limit bolt can be inserted, a clamping point spring is fixed in the front group fixing seat, the clamp point spring is characterized in that a cylindrical ejector pin is fixedly connected to the inner side end of the clamp point spring, a plurality of arc-shaped grooves are longitudinally distributed on one side, facing the cylindrical ejector pin, of the front wheel limiting plug pin, and the front wheel limiting slot is limited through the cylindrical ejector pin.

7. The stroller according to claim 5, wherein a limit bolt is disposed in the front end of the main support base and has a threaded end inserted into the rear side longitudinal rod, a plastic sleeve is fixed in the rear side longitudinal rod, a limit nut is disposed in the plastic sleeve and is capable of being screwed into an upper end of the limit bolt, a bolt slot is disposed in the front end of the main support base and is capable of being inserted into the limit bolt, a lower opening of the bolt slot is smaller than a diameter of a bolt head of the limit bolt, an arc-shaped limit slot is disposed on lower surfaces of the rear side longitudinal rod and the plastic sleeve for the limit bolt to pass through, a rear wheel fixing base is fixed at a lower end of the lower support tube, a rear wheel rotating shaft inserted into the rear wheel fixing base is disposed at an end of the rear wheel facing the rear wheel fixing base, and an annular fixing groove is disposed on the rear wheel rotating shaft, the rear wheel fixing seat is internally provided with a rear wheel fixing sheet which is sleeved on a rear wheel rotating shaft and buckled on an annular fixing groove, a brake pipe is arranged between the rear wheel fixing seats, two end parts of the brake pipe are fixedly provided with rear wheel fixing seat rear covers buckled into the rear wheel fixing seats, the rear wheel fixing seat rear covers can rotate relative to the rear wheel fixing seats, one side of the rear wheel fixing seat rear cover extending into the rear wheel fixing seat is fixedly provided with a brake ratchet, a brake shaft capable of axially moving along the rear wheel fixing seat is arranged in the rear wheel fixing seat, one end of the brake shaft facing the brake pipe is provided with a conical surface capable of being matched with the brake ratchet to realize axial transverse movement, one side of the rear wheel fixing seat departing from the fixing seat rear cover is fixedly provided with a fixing seat front cover, a brake shaft reset spring is fixed between the brake shaft and the fixing seat front cover, the outer side end of the brake shaft penetrates through the fixing seat front cover, and the inner side surface, and a brake pedal is fixed outside the brake tube, and a shock-absorbing spring is also arranged between the outer side of the lower end part of the lower supporting tube and the rear wheel fixing seat.

8. The stroller according to claim 3, wherein the armrest comprises a lower armrest tube, the upper end of the lower armrest tube is connected to a U-shaped upper armrest tube via an armrest joint set, the armrest joint set comprises an armrest left joint fixed to the upper end of the lower armrest tube and an armrest right joint fixed to the lower end of the upper armrest tube, the armrest left joint has a first inner gear ring therein, the armrest right joint has a second inner gear ring therein, the armrest left joint and the armrest right joint have inner cavities facing each other, the armrest left joint and the armrest right joint have axes connected to each other via a shaft for relative rotation, the shaft is sleeved with an upper armrest joint gear engaged with the first inner gear ring and the second inner gear ring and sleeved on a pin, the joint gear and the armrest left joint are connected via an armrest spring, and the armrest right joint has a button outside, the inner side end of the button penetrates through a right handrail joint, the end part of the button is provided with a bulge for preventing the button from being separated from the right handrail joint, the joint gear is positioned in the middle of the matching part of the left handrail joint and the right handrail joint and has the thickness smaller than or equal to the thickness of the inner gear ring of the left handrail joint, the handrail is connected with the upper end of the lower supporting pipe through a folding joint, the pair of folding joints comprise a left folding joint fixed at the upper part of the lower supporting rod and a right folding joint fixed on the lower handrail, a joint clamping block is fixed in the left folding joint, a joint screw seat is sleeved in the right folding joint, an inclined plane is arranged between the joint screw seat and the right folding joint, the joint clamping block is connected with the left joint through a joint spring and is positioned between the right folding joint and the left folding joint, the joint clamping block is provided with a convex part along the circumferential direction, and the opposite surfaces of the right folding joint and the left folding joint are provided, the folding mechanism is characterized in that a slope matched with the inclined plane of the joint spiral seat is further arranged in the folding right joint, a joint shaft penetrating through the joint spiral seat, the joint spring and the joint clamping block is arranged in the folding right joint and the folding left joint, a pull rope capable of pulling the joint spiral seat to rotate around the joint shaft is arranged in the lower handrail tube, so that the joint clamping block overcomes the joint spring to enable the joint clamping block to be separated from the folding right joint, the joint rotates around the joint shaft, a pulling knob is fixed at the upper end of the pulling knob, and the pulling knob is in sliding fit with the lower handrail tube.

9. The stroller with bicycle function according to claim 3, wherein a headrest fixing tube is fixedly connected to the rear side of the seat, a headrest is fixedly connected to the headrest fixing tube, an arc-shaped brake plate is fixedly connected to the lower portion of the front wheel fixing seat, a basket or a ceiling bracket is fixed to the upper portion of the cradle body, and the ceiling bracket is detachably connected to the cradle or the frame.

10. The stroller of claim 4, wherein the pedal connection shaft has an opening at a side thereof, the pedal rod is inserted into the pedal connection shaft toward one end of the front wheel, the end of the pedal rod has an annular limiting groove, an angular clip is fixed inside the pedal connection shaft, the angular clip has a snap ring capable of being snapped into the annular limiting groove toward one end of the pedal rod, one end of the angular clip extends out of the pedal connection shaft, and a snap spring is disposed between an outer end of the angular clip and the wheel set support frame and inside the pedal connection shaft, and the pedal connection shaft has a channel for one end of the angular clip to extend out.