CN218021788U

CN218021788U - Baby carriage

Info

Publication number: CN218021788U
Application number: CN202221805996.XU
Authority: CN
Inventors: 徐涛
Original assignee: Zhongshan Hengzhibao Baby Products Co ltd
Current assignee: Zhongshan Hengzhibao Baby Products Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-12-13
Anticipated expiration: 2032-07-13

Abstract

The utility model discloses a baby carriage, which comprises a vehicle rack, a handle, preceding wheelset and back wheelset, be equipped with the pin joint seat on the frame, be connected with the switching-over seat on hand, switching-over seat pin joint is on the pin joint seat, be equipped with the limit structure that can restrict switching-over seat pivoted limit structure and restriction switching-over seat rotation range between switching-over seat and the pin joint seat, be equipped with first brake equipment on the preceding wheelset, be equipped with first control switch on the first brake equipment, be equipped with on the first control switch and let first control switch keep the auto-lock structure of closed state, be equipped with the second brake equipment who is used for braking the bassinet rear wheel on the back wheelset, be equipped with first brake equipment on the wheelset in the front, be equipped with second brake equipment on the back wheelset, when meetting some circumstances, can be respectively through first brake equipment and second brake equipment from the preceding and the back of bassinet and brake, thereby let the brake become more convenient and fast, reduce because of the brake not reaching the emergence that leads to some accidents.

Description

Baby carriage

Technical Field

The utility model relates to a baby daily necessities technical field especially relates to a bassinet.

Background

At present, in order to enable the face of a baby to face forwards, bring convenience to a better visual angle to observe surrounding scenery and enable the face of the baby to face backwards towards an adult, and bring convenience to communication interaction between the adult and the baby, a handle reversing device is arranged between a frame and a handle of the baby carrier, so that the adult can push the baby carrier from the back and can also push the baby carrier from the front.

The utility model discloses just make based on above-mentioned condition.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects of the prior art and provides a baby carriage which can brake in the front or at the back.

The utility model discloses a realize through following technical scheme:

the utility model provides a baby carriage, includes frame, the handle of connection on the frame, locates the preceding wheelset of frame front end below and locates the rear wheel group of frame rear end below, be equipped with the pin joint seat on the frame, be connected with the switching-over seat on hand, switching-over seat pivot is on the pin joint seat, be equipped with the limit structure that can restrict switching-over seat pivoted limit structure and restriction switching-over seat rotation range between switching-over seat and the pin joint seat, be equipped with the first brake equipment who is used for braking baby carriage front wheel on the preceding wheelset, be equipped with on the first brake equipment and control first brake equipment and carry out the first control switch that brakes, be equipped with on the first control switch and let first control switch keep the auto-lock structure of closure state, be equipped with the second brake equipment who is used for braking the baby carriage rear wheel on the rear wheel group.

The pivot seat is provided with a pivot, the reversing seat is pivoted on the pivot, a spline pivoted on the pivot is arranged between the pivot seat and the reversing seat, the reversing seat is provided with a clamping groove for inserting the spline to limit the rotation of the reversing seat, a rotating block sleeved on the pivot and capable of pushing the spline to separate the spline from the reversing seat is arranged between the reversing seat and the spline, the reversing seat is provided with at least one ejection block, the ejection block is provided with a first inclined surface for ejecting the rotating block, the rotating block is provided with a first bulge capable of abutting against the first inclined surface and moving the rotating block to separate the spline from the clamping groove, a second limiting structure for limiting the rotation range of the rotating block is arranged between the rotating block and the clamping groove, the rotating block is connected with a first traction rope for driving the rotating block to rotate, and a first spring for inserting the spline separated from the clamping groove into the clamping groove is further arranged between the reversing seat and the spline.

According to the baby carriage, the first slot for inserting the ejection block is formed in the position, corresponding to the ejection block, of the rotating block, and the first protrusion is arranged in the first slot.

As above-mentioned bassinet, thereby limit structure is including locating the first stopper on the rotatory piece and locating the draw-in groove internal energy and the cooperation of first stopper and injecing the second stopper of rotatory piece rotation range, first stopper is the arc piece, and the side of first stopper is equipped with the first guide way for first haulage rope direction.

As above a bassinet, the one end that rotatory piece was kept away from to first haulage rope is connected with and supplies the people to hold the handle of pulling first haulage rope, handle sliding connection is on hand, first limit structure is including locating the gliding spacing spout of confession third stopper on the switching-over seat and locating the pin joint seat.

As above a bassinet, first control switch is including fixing the mount pad on the frame and locating on the mount pad and can be relative its gliding button from top to bottom, the auto-lock structure is including locking piece and rotating sliding sleeve, locking piece circumference evenly distributed has a plurality of skewed teeth and a plurality of second slots that the opening faces down that the opening faces down, and second slot and adjacent skewed tooth alternate distribution, rotating sliding sleeve inboard corresponds the second slot position and is equipped with the inserted block that can insert the second slot, is equipped with the reference column on the mount pad, locking piece connects on the reference column, rotating sliding sleeve overlaps on the reference column, be equipped with the second spring that can jack-up the button between button and the mount pad, be equipped with the ejection part that pushes away rotating sliding sleeve on the button, rotating sliding sleeve upper portion is equipped with down the separation and reunion tooth, thereby be equipped with on the button can promote rotating sliding sleeve rotatory last separation and reunion tooth with lower separation and reunion tooth cooperation.

According to the baby carriage, the button comprises a button cap and a pressing piece connected below the button cap, the button cap is provided with a containing groove for inserting the locking piece, the lower clutch tooth is arranged at the lower end of the wall of the containing groove, the pushing piece part is arranged on the pressing piece, and the second spring is arranged between the pressing piece and the mounting seat.

According to the baby carriage, the pressing part comprises two guide posts arranged on two sides of the positioning post, the ejection part comprises a platform arranged between the two guide posts, two sides of the platform are respectively connected to the two guide posts, a through hole for the positioning post to pass through is formed in the platform, a sliding groove for the guide post to insert is formed in the button cap, and a positioning groove for the second spring to insert is formed in the lower end of the guide post.

According to the baby carriage, the second traction rope for driving the first brake component to brake is arranged between the first control switch and the first brake component, the sliding block is arranged at one end, connected with the first control switch, of the second traction rope, the sliding block is connected to the mounting seat in a sliding mode, and the second inclined plane used for pushing the sliding block to slide is arranged below the guide column.

The baby carriage comprises a frame, a front wheel set, a rear wheel set, a front wheel set, a second brake device, a second control switch and a pushing piece, wherein the second brake device comprises a second brake component between the frame and the front wheel set and a second control switch for controlling the second brake component to brake, the second control switch comprises a rotating rod which is rotatably connected to the frame and a treading block which is arranged on the rotating rod and drives the rotating rod to rotate, a second brake piece is arranged at the tail end of the rotating rod, a second brake seat is arranged on the rear wheel set, a second brake groove is formed in the second brake seat, the second brake piece comprises a brake column and a pushing piece which is used for pushing the brake column into the second brake groove, an arc-shaped guide groove for pushing the brake column is formed in the pushing piece, the depth of the arc-shaped guide groove gradually becomes shallow from one end to the other end, and a third spring for pushing the brake column out of the second brake groove is arranged on the second brake seat and the brake column.

Compared with the prior art, the utility model discloses there is following advantage:

the utility model discloses a handle passes through the switching-over seat pivot and connects on the pin joint seat of frame, the handle can rotate the switching-over around the pin joint seat through the switching-over seat, thereby can promote the bassinet from the front, it is interactive to be convenient for exchange between adult and the baby, also can promote the bassinet from the back, make baby's face can move forward, be convenient for have better visual angle to observe scenery on every side, be equipped with between switching-over seat and the pin joint seat and restrict switching-over seat pivoted limit structure, after the handle rotates required position, can make the handle keep no longer rotating at this position through limit structure, still be equipped with the first limit structure that can restrict switching-over seat rotation range between switching-over seat and the pin joint seat, let the handle can only rotate between certain turned angle, thereby make the handle can not laminate with the frame, thereby reduce the risk of pressing from baby's arm, and simultaneously, be equipped with first brake equipment in the front, be equipped with second brake equipment on the back wheelset, when meetting some circumstances, can carry out the brake equipment through first brake equipment and the front and the brake equipment respectively, thereby let become more convenient and swift, and lead to some accidents that can not take place.

Drawings

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an exploded view of the reversing device according to the present invention;

fig. 3 is an exploded view of the second reversing device of the present invention;

fig. 4 is a schematic structural diagram of a rotating block in the present invention;

FIG. 5 is a schematic structural diagram of a first brake device according to the present invention;

FIG. 6 is a schematic structural view of a first brake assembly of the present invention;

fig. 7 is an exploded view of a first control switch of the present invention;

fig. 8 is a cross-sectional view of a first control switch of the present invention;

fig. 9 is a schematic structural view of the button cap of the present invention;

fig. 10 is a schematic structural view of a second brake device according to the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

fig. 1 to 10 show a baby carriage, which includes a frame 1, a handle 2 connected to the frame 1, a front wheel set 3 disposed below the front end of the frame 1, and a rear wheel set 4 disposed below the rear end of the frame 1, wherein the frame 1 is provided with a pivot seat 51, the handle 2 is connected with a reversing seat 52, the reversing seat 52 is pivoted on the pivot seat 51, a limiting structure capable of limiting the rotation of the reversing seat 52 and a limiting structure for limiting the rotation range of the reversing seat 52 are provided between the reversing seat 52 and the pivot seat 51, the front wheel set 3 is provided with a first brake device for braking the front wheel of the baby carriage, the first brake device is provided with a first control switch 61 capable of controlling the first brake device to brake, the first control switch 61 is provided with a self-locking structure capable of enabling the first control switch 61 to be in a closed state, and the rear wheel set 4 is provided with a second brake device for braking the rear wheel of the baby carriage.

The handle 2 can rotate around the pivoting seat 51 through the reversing seat 52 to reverse, so that the baby carriage can be pushed from the front, the communication interaction between an adult and a baby is facilitated, the baby carriage can also be pushed from the back, the face of the baby can face forwards, the surrounding scenery can be observed conveniently with a better visual angle, a limiting structure capable of limiting the rotation of the reversing seat 52 is arranged between the reversing seat 52 and the pivoting seat 51, after the handle 2 rotates to a required position, the handle 2 can be kept at the position through the limiting structure and can not rotate any more, a limiting structure capable of limiting the rotation range of the reversing seat 52 is further arranged between the reversing seat 52 and the pivoting seat 51, the handle 2 can only rotate between certain rotation angles, the risk of clamping the arm of the baby is reduced, meanwhile, a first brake device is arranged on the front wheel set 3, a second brake device is arranged on the rear wheel set 4, when some conditions are met, the baby carriage can be braked from the front and the back through the first brake device and the second brake device respectively, the braking becomes more convenient and quicker, and the occurrence of some accidents caused by untimely braking is reduced.

As shown in fig. 1 to 4, a pivot 53 is disposed on the pivot seat 51, the reversing seat 52 is pivoted on the pivot 53, a spline 54 pivoted on the pivot 53 is disposed between the pivot seat 51 and the reversing seat 52, a slot 521 for allowing the spline 54 to be inserted into the slot 521 and further limiting the rotation of the reversing seat 52 is disposed on the reversing seat 52, a rotating block 55 sleeved on the pivot 53 and capable of pushing the spline 54 to separate the spline 54 from the reversing seat 52 is disposed between the reversing seat 52 and the spline 54, at least one ejector block 522 is disposed on the reversing seat 52, a first inclined surface 5221 for ejecting the rotating block 55 is disposed on the ejector block 522, a first protrusion 551 capable of abutting against the first inclined surface 5221 and allowing the rotating block 55 to move so that the spline 54 separates from the slot 521 is disposed on the rotating block 55, a second limiting structure for limiting the rotation range of the rotating block 55 is disposed between the rotating block 55 and the slot 521, a first pulling rope 56 for driving the spline of the rotating block 55 to rotate is connected to the rotating block 55, and a first spring 57 for allowing the spline 54 separated from the slot 521 to be inserted into the slot 521 is disposed between the reversing seat 52 and the slot 54.

The first pulling rope 56 drives the rotating block 55 to rotate the rotating block 55, so that the rotating block 55 is pushed out through the first inclined surface 5221, the rotating block 55 can push out the spline 54 out of the reversing seat 52, the handle 2 can smoothly rotate, after the handle 2 is reversed to a required position, the first pulling rope 56 is loosened, and the spline 54 is pushed into the reversing seat 52 again through the first spring 57, so that the reversing seat 52 is locked.

A first slot 552 for the ejection block 522 to insert is disposed on the position of the rotation block 55 corresponding to the ejection block 522, the first protrusion 551 is disposed in the first slot 552, and an inclined surface capable of being attached to the first inclined surface 5211 is disposed on the first protrusion 551. The structure of the device is more compact, and the size of the reversing device is reduced.

The second limiting structure comprises a first limiting block 553 arranged on the rotating block 55 and a second limiting block 5211 arranged in the clamping groove 521, wherein the second limiting block 5211 can be matched with the first limiting block 553 to limit the rotating range of the rotating block 55, the first limiting block 553 is an arc-shaped block, and a first guide groove 5531 for guiding the first traction rope 56 is arranged on the side edge of the first limiting block 553. The first guide groove 5531 guides the first traction rope 56, thereby preventing the first traction rope 56 from being misaligned and jammed when the first traction rope 56 is pulled.

A second guide groove capable of accommodating the spline 54 and guiding the spline 54 is formed in the pivot seat 51 at a position corresponding to the slot 521, and the second guide groove has the same shape as the slot 521. The spline 54 slides between the catch 521 and the second guide groove.

The end of the first pulling rope 56 far away from the rotating block 55 is connected with a handle 58 for a person to hold and pull the first pulling rope 56, and the handle 58 is slidably connected to the handle 2. Can be directly through the pulling handle 58, make the handle 58 can stimulate first haulage rope 56 when sliding along handle 2, first limit structure is including locating third stopper 81 on the switching-over seat 52 and locating the gliding spacing spout 82 of confession third stopper 81 on the pin joint seat 51, lets handle 2 only can rotate between certain turned angle to make handle 2 can not laminate with frame 1, thereby reduce the risk of pressing from both sides baby's arm.

As shown in fig. 1 and fig. 5 to fig. 9, the first control switch 61 includes an installation seat 611 fixed on the frame 1 and a button 612 arranged on the installation seat 611 and capable of sliding up and down relative to the installation seat 611, the self-locking structure includes a locking member 613 and a rotating sliding sleeve 614, a plurality of inclined teeth 6131 with downward openings and a plurality of second slots 6132 with downward openings are uniformly distributed in the circumferential direction of the locking member 613, the second slots 6132 and the adjacent inclined teeth 6131 are distributed at intervals, an insert block 6141 capable of being inserted into the second slot 6132 is arranged on the inner side of the rotating sliding sleeve 614 corresponding to the position of the second slot 6132, a positioning column 6111 is arranged on the installation seat 611, the locking member 613 is connected to the positioning column 6111, the rotating sliding sleeve 614 is sleeved on the positioning column 6111, a second spring 615 capable of jacking up-lifting the button 612 is arranged between the button 612 and the installation seat 611, a pushing member capable of jacking the rotating sliding sleeve 614 is arranged on the button 612, a pushing member for jacking the rotating sliding sleeve 614 is arranged on the upper portion of the rotating sliding sleeve 614, a lower clutch tooth 6142 is arranged on the button 612, and an upper portion of pushing tooth 6123 capable of being matched with the lower clutch tooth 6142 so as to push the upper tooth 614 for pushing the rotating tooth 6123.

When the insert 6141 is inserted into the second slot 6132, the upper clutch tooth 6123 and the lower clutch tooth 6142 are staggered, when the button 612 is pressed, the rotating sliding sleeve 614 moves downwards along with the button 612, when the insert 6141 exits from the second slot 6132, the upper clutch tooth 6123 pushes the lower clutch tooth 6142 to enable the rotating sliding sleeve 614 to rotate, then the button 612 is released, the rotating sliding sleeve 614 is jacked up by the elastic piece 15 along with the button 612, the insert 6141 is jacked on the tooth side inclined plane of the inclined tooth 6131 to enable the rotating sliding sleeve 614 to rotate, so that the upper clutch tooth 6123 and the lower clutch tooth 6142 are staggered and the button 612 is limited to bounce, the first control switch 61 is in a locking state, and the baby carriage is also in a brake release state; when the button 612 is pressed again, when the insert 6141 exits the tooth side gap of the first helical tooth 131, the upper clutch tooth 6123 pushes the lower clutch tooth 6142 to rotate the rotating sliding sleeve 614, at this time, the button 612 is released, the rotating sliding sleeve 614 is jacked up by the second spring 615 along with the button 612, the insert 6141 is jacked on the guide inclined plane at the lower part of the second slot 6132, so that the rotating sliding sleeve 614 rotates to insert the insert 6141 into the second slot 6132, at this time, the first control switch 61 is in an open state, and at this time, the baby carriage is also in a braking state.

The wheels of the baby carriage can be braked by pressing the first control switch 61, then the wheels of the baby carriage can be relieved by pressing the first control switch 61 again, the operation is very convenient and fast, and compared with the mode of relieving the wheels by using a toe-raising pedal, the device can relieve the wheels by pressing the first control switch 61, and is more labor-saving and fast.

The button 612 includes a button cap 6121 and a pressing piece 6122 connected below the button cap 6121, the button cap 6121 is provided with an accommodating groove 6125 into which the locking piece 613 is inserted, the lower clutch tooth 6142 is arranged at the lower end of the groove wall of the accommodating groove 6125, the pushing piece is arranged on the pressing piece 6122, and the second spring 615 is arranged between the pressing piece 6122 and the mounting seat 611. The pressing part 6122 includes two guiding posts 6126 disposed at two sides of the positioning post 6111, the top pushing part includes a platform 617 disposed between the two guiding posts 6126, two sides of the platform 617 are respectively connected to the two guiding posts 6126, a through hole 6171 for the positioning post 6111 to pass through is disposed on the platform 617, and the through hole 6171 can guide the up-and-down movement of the button 612. The button cap 6121 is provided with a sliding groove 6124 for inserting the guide post 6126, the lower end of the guide post 6126 is provided with a positioning groove 6127 for inserting the second spring 615, and the positioning groove 1232 can position and guide the second spring 615.

Thereby be equipped with between first control switch 61 and the first brake subassembly and supply first control switch 61 pulling to drive first brake subassembly and carry out the second haulage rope 62 that brakes, the one end that second haulage rope 62 and first control switch 61 are connected is equipped with slider 621, slider 621 sliding connection is on mount pad 611, the below of guide post 6126 is equipped with and is used for promoting the gliding second inclined plane 6128 of slider 621. When the first control switch 61 is pressed to enable the first control switch 61 to be in a locked state, the second inclined surface 6128 pushes the sliding block 621 towards the middle, namely the second traction rope 62 is pulled towards the middle, and the second traction rope 62 pulls the brake block 22 out of the first brake seat 21 to enable the baby carriage to be in a brake release state; when the first control switch 61 is pressed to make the first control switch 61 in an on state, the second inclined surface 6128 leaves the slide block 621, and the brake block 22 is inserted into the first brake seat 21 to make the baby carriage in a braking state. The sliding block 621 is cylindrical, so that abrasion between the sliding block 621 and the second inclined surface 6128 can be reduced.

First brake subassembly is including locating first brake seat 64 on the perambulator front wheel and locating the brake block 63 on the frame 1, thereby be equipped with the first brake groove 641 that a plurality of confession brake block 63 inserted the brake on the first brake seat 64, second haulage rope 62 is connected on brake block 63 and is used for pulling out brake block 63 from first brake groove 641, be equipped with the fourth spring 65 that is used for pushing brake block 63 into first brake groove 641 between brake block 63 and the frame 1.

The left and right sides of wheel all is equipped with first brake subassembly in the front wheel group 3, enables the wheel left and right sides and brakes simultaneously through pressing button 612, compares with the one side of only braking the wheel, and the phenomenon that the wheel deflection spin can prevent to appear in the both sides of braking the wheel simultaneously.

The wheels on the left side and the right side of the front wheel set 3 are respectively provided with a first brake component, the wheels on the left side and the right side of the front wheel set 3 can be controlled to brake or brake off at the same time by pressing one button 612, and compared with the wheel on only one side, the wheels on both sides can be simultaneously braked to prevent the deflection and rotation of the baby carriage.

In an embodiment, the second brake device has the same structure as the first brake device, and the second brake assemblies are disposed on the left and right sides of the wheels of the rear wheel set 4, the left and right sides of the wheels can be simultaneously braked by pressing the button 612, the second brake assemblies are disposed on the wheels on the left and right sides of the rear wheel set 4, and the wheels on the left and right sides of the rear wheel set 4 can be simultaneously braked or released by pressing one button 612.

In another embodiment, as shown in fig. 10, the second brake device includes a second brake component between the frame 1 and the rear wheel set 4 and a second control switch 71 for controlling the second brake component to brake, the second control switch 71 includes a rotating rod 711 rotatably connected to the frame 1 and a stepping block 712 disposed on the rotating rod 711 for driving the rotating rod 711 to rotate, a second brake member 72 is disposed at the end of the rotating rod 711, a second brake seat 73 is disposed on the rear wheel set 4, the second brake seat 73 is provided with a second brake groove 731, the second brake member 72 includes a brake post 721 and a pushing member 722 for pushing the brake post 721 into the second brake groove 731, an arc-shaped guide groove 7221 for pushing the brake post 721 is disposed on the pushing member 722, the depth of the arc-shaped guide groove 7221 gradually decreases from one end to the other end, and a third spring 74 for pushing the brake post 721 out of the second brake groove 731 is disposed on the second brake seat 73 and the brake post 721.

The rotation lever 711 is rotated by stepping on the stepping block 712, so that the arc guide groove 7221 pushes the brake post 721 into the second brake groove 731 to perform braking, the stepping block 712 is hooked by the toe of the foot to rotate the rotation lever 711 back, and the third spring 74 ejects the brake post 721 to release braking.

The frame 1 is also provided with a front seat frame 81 and a rear seat frame 82, the connection mode and the connection structure of the front seat frame 81 and the frame 1 are the same as those of the handle 2 and the frame 1, and the connection mode and the connection structure of the rear seat frame 82 and the frame 1 are the same as those of the handle 2 and the frame 1. The front seat frame 81 and the rear seat frame 82 can rotate around the pivot joint with the frame 1 to be folded together.

The frame 1 comprises a front frame 10 and a rear frame 101, wherein the front frame 10 and the rear frame 101 are pivoted together, and the front frame 10 and the rear frame 101 can rotate around the pivoted position so as to be folded together.

Claims

1. A stroller, characterized in that: including frame (1), connect handle (2) on frame (1), locate preceding wheelset (3) of frame (1) front end below and locate rear wheel group (4) of frame (1) rear end below, be equipped with pin joint seat (51) on frame (1), be connected with switching-over seat (52) on handle (2), switching-over seat (52) pin joint is on pin joint seat (51), be equipped with the first limit structure that can restrict switching-over seat (52) pivoted limit structure and restriction switching-over seat (52) rotation range between switching-over seat (52) and pin joint seat (51), be equipped with the first brake equipment who is used for braking bassinet front wheel on preceding wheelset (3), be equipped with first control switch (61) that can control first brake equipment and carry out the brake on the first brake equipment, be equipped with on first control switch (61) and let first control switch (61) be in the auto-lock structure of closed state, be equipped with the second brake equipment who is used for the braking bassinet rear wheel on rear wheel group (4).

2. A stroller according to claim 1, wherein: the reversing mechanism is characterized in that a pivot (53) is arranged on the pivot seat (51), the reversing seat (52) is pivoted on the pivot (53), a spline (54) pivoted on the pivot (53) is arranged between the pivot seat (51) and the reversing seat (52), a clamping groove (521) for inserting the spline (54) to further limit the reversing seat (52) to rotate is arranged on the reversing seat (52), a rotating block (55) sleeved on the pivot (53) and capable of pushing the spline (54) to enable the spline (54) to be separated from the reversing seat (52) is arranged between the reversing seat (52) and the spline (54), at least one ejecting block (522) is arranged on the reversing seat (52), the push-out block (522) is provided with a first inclined surface (5221) for pushing out the rotary block (55), the rotary block (55) is provided with a first protrusion (551) which can be abutted to the first inclined surface (5221) and enables the rotary block (55) to move to enable the spline (54) to be separated from the clamping groove (521), a second limiting structure for limiting the rotation range of the rotary block (55) is arranged between the rotary block (55) and the clamping groove (521), the rotary block (55) is connected with a first traction rope (56) for driving the rotary block (55) to rotate, and a spline (54) which enables the spline (54) separated from the clamping groove (521) to be inserted into the clamping groove (521) is further arranged between the reversing seat (52) and the spline (54) A first spring (57).

3. A stroller according to claim 2, wherein: the position of the rotating block (55) corresponding to the ejection block (522) is provided with a first slot (552) for the ejection block (522) to insert, and the first protrusion (551) is arranged in the first slot (552).

4. A stroller according to claim 3, wherein: the second limit structure is including locating first stopper (553) on rotatory piece (55) and locating draw-in groove (521) thereby second stopper (5211) that can cooperate with first stopper (553) and restrict rotatory piece (55) rotation range, first stopper (553) are the arc piece, and the side of first stopper (553) is equipped with first guide way (5531) for first haulage rope (56) direction.

5. A stroller according to claim 4, wherein: one end of the first hauling rope (56) far away from the rotating block (55) is connected with a handle (58) for a person to hold and pull the first hauling rope (56), the handle (58) is connected on the handle (2) in a sliding manner, and the first limiting structure comprises a third limiting block (81) arranged on the reversing seat (52) and a limiting sliding groove (82) which is arranged on the pivoting seat (51) and used for the third limiting block (81) to slide.

6. A stroller according to claim 1, wherein: the first control switch (61) comprises a mounting seat (611) fixed on the frame (1) and a button (612) which is arranged on the mounting seat (611) and can slide up and down relative to the mounting seat (611), the self-locking structure comprises a locking piece (613) and a rotating sliding sleeve (614), a plurality of inclined teeth (6131) with downward openings and a plurality of second slots (6132) with downward openings are uniformly distributed in the circumferential direction of the locking piece (613), the second slots (6132) and adjacent inclined teeth (6131) are distributed at intervals, an insert block (6141) which can be inserted into the second slot (6132) is arranged on the inner side of the rotating sliding sleeve (614) corresponding to the second slot (6132), a positioning column (6111) is arranged on the mounting seat (611), the locking piece (613) is connected onto the positioning column (6111), the rotating sliding sleeve (614) is sleeved on the positioning column (6111), a second spring (612) which can eject the button (612) is arranged between the button (612) and the mounting seat (611), a push button (615) is arranged on the top of the rotating sliding sleeve (6142), and a lower clutch button (612) which can push the rotating sliding sleeve (6142) and push the upper part of the rotating sliding sleeve (6123), so that the upper part of the rotating sliding sleeve (6142) can be matched with the clutch button (6123).

7. A stroller according to claim 6, wherein: the button (612) comprises a button cap (6121) and a pressing piece (6122) connected below the button cap (6121), an accommodating groove (6125) for inserting the locking piece (613) is formed in the button cap (6121), the lower clutch teeth (6142) are arranged at the lower end of the groove wall of the accommodating groove (6125), the pushing piece is arranged on the pressing piece (6122), and the second spring (615) is arranged between the pressing piece (6122) and the mounting seat (611).

8. A stroller according to claim 7, wherein: the pressing part (6122) comprises two guide posts (6126) arranged on two sides of the positioning post (6111), the ejection part comprises a platform (617) arranged between the two guide posts (6126), two sides of the platform (617) are respectively connected to the two guide posts (6126), a through hole (6171) for the positioning post (6111) to pass through is formed in the platform (617), a sliding groove (6124) for the guide post (6126) to insert is formed in the button cap (6121), and a positioning groove (6127) for the second spring (615) to insert is formed in the lower end of the guide post (6126).

9. A stroller according to claim 8, wherein: thereby be equipped with between first control switch (61) and the first brake subassembly and supply first control switch (61) pulling to drive second haulage rope (62) that first brake subassembly carries out the brake, second haulage rope (62) are served with one of being connected with first control switch (61) and are equipped with slider (621), slider (621) sliding connection is on mount pad (611), the below of guide post (6126) is equipped with and is used for promoting slider (621) gliding second inclined plane (6128).

10. A stroller according to claim 1, wherein: the second brake device comprises a second brake component between the frame (1) and the front wheel set (3) and a second control switch (71) used for controlling the second brake component to brake, the second control switch (71) comprises a rotating rod (711) connected to the frame (1) in a rotating mode and a stepping block (712) arranged on the rotating rod (711) and used for driving the rotating rod (711) to rotate, a second brake piece (72) is arranged at the tail end of the rotating rod (711), a second brake seat (73) is arranged on the rear wheel set (4), a second brake groove (731) is arranged on the second brake seat (73), the second brake piece (72) comprises a brake column (721) and a pushing piece (721) used for pushing the brake column (721) into the second brake groove (731), an arc-shaped guide groove (7221) used for pushing the brake column (721) is arranged on the pushing piece (722), the depth of the arc-shaped guide groove (7221) gradually becomes shallow from one end to the other end, and a third brake spring (74) used for pushing the brake column (721) out of the second brake column (721) is arranged on the second brake seat (73).