CN110775133A

CN110775133A - Baby carriage with seat backrest capable of being linked to be folded

Info

Publication number: CN110775133A
Application number: CN201910686040.9A
Authority: CN
Inventors: 刘玲芝
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-29
Filing date: 2019-07-28
Publication date: 2020-02-11
Also published as: CN210882284U

Abstract

The invention discloses a baby carriage with a seat back capable of being folded in a linkage manner, which comprises a frame in an unfolded state and a folded state, a frame locking mechanism for locking the frame in the unfolded state, and a seat.

Description

Baby carriage with seat backrest capable of being linked to be folded

Technical Field

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

Background

The stroller generally includes a frame having an unfolded state and a folded state, and a seat disposed on the frame, wherein the frame includes left and right side brackets, and the seat is disposed between the left and right side brackets. A frame locking mechanism for locking the frame in an unfolded state is provided on the frame, and a frame unlocking mechanism for unlocking the frame locking mechanism is generally also provided on the frame; the seat then typically includes a seat pan for seating and a backrest pivotally connected at its lower end to the rear side of the seat pan. In order to reduce the volume of the whole stroller, the backrest of the seat is also pivotally connected to the seat plate, a backrest locking mechanism is disposed between the backrest and the seat plate to limit the relative rotation of the backrest and the seat plate, and a backrest unlocking mechanism for unlocking the backrest locking mechanism is disposed on the backrest, so that after the stroller frame is folded by operating the stroller frame unlocking mechanism, the backrest locking mechanism is operated to unlock the backrest locking mechanism to fold the backrest and the seat plate. This arrangement makes the entire stroller cumbersome to operate, especially for parents holding their children.

Disclosure of Invention

The present invention is directed to overcome the above disadvantages and to provide a stroller with a seat back capable of being folded in a linked manner.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a baby carriage that seat back can linkage is closed, its including have the frame of expansion state and receipts state, with the frame is locked in the frame locking mechanical system of expansion state, set up in seat on the frame, the frame includes a supporting seat, the seat sets up on the supporting seat, the seat is including the bedplate that supplies to take, be provided with on the bedplate and be used for the release lock frame release locking mechanical system of frame locking mechanical system, the seat still includes the lower extreme pin joint in the back of bedplate rear side, be provided with between back and the bedplate and restrict both relative rotation's back locking mechanical system, just back locking mechanical system is set up to, when passing through frame release locking mechanical system release frame locking mechanical system, back locking mechanical system is also released.

The frame still includes left and right sides support, the supporting seat is connected left and right sides support.

The backrest is also provided with a second lock release mechanism for releasing the backrest lock mechanism, and the second lock release mechanism is provided so that, when the backrest lock mechanism is released by the second lock release mechanism, the lock mechanism is maintained in a state in which the vehicle frame is in the unfolded state.

The backrest comprises a backrest left side and a backrest right side, wherein two ends of the backrest left side and the backrest right side are respectively and fixedly connected with a backrest pin joint seat, the seat plate left side and the seat plate right side are symmetrically provided with seat pin joint seats, the backrest pin joint seats are in pin joint with the seat pin joint seats, opposite sides of the backrest pin joint seats and the seat pin joint seats are respectively provided with a first tooth groove and a second tooth groove, the backrest locking mechanism comprises a gear and a first spring, the gear and the first spring are arranged between the first tooth groove and the second tooth groove, and the gear is meshed with the first tooth groove and the second tooth groove simultaneously under the action of the first spring.

And a first driving part used for driving the gear to be separated from the first tooth groove is also arranged in the second tooth groove, one end of a first steel wire is connected with the first driving part, and the other end of the first steel wire is connected with the frame unlocking mechanism and driven by the frame unlocking mechanism.

The first driving piece penetrates through the inner ring of the gear in a relatively rotating mode, one end, far away from the bottom wall of the second tooth socket, of the first driving piece is located inside the inner ring of the gear, a first driven wave-shaped boss is arranged on the inner ring wall of the gear in a protruding mode and corresponds to the first driven wave-shaped boss, the first driving piece is provided with the first driving wave-shaped boss in the periphery, the first driving wave-shaped boss is matched with the first driven wave-shaped boss, when the frame locking mechanism is used for unlocking the frame locking mechanism, the first steel wire is pulled downwards, the first driving piece rotates, and through the matching of the first driving wave-shaped boss and the first driven wave-shaped boss, the gear moves towards the second tooth socket and is separated from the meshing with the first tooth socket.

The second lock releasing mechanism comprises a second driving wavy surface arranged on the bottom wall of the first tooth groove, a second driving piece which can rotate relatively and is arranged in the first tooth groove in a relatively left-right moving mode, a second steel wire of which the lower end is connected with the second driving piece, and a second operating device which is arranged on the upper side of the backrest and can pull the second steel wire upwards, wherein the upper end of the second steel wire is connected with the second operating device; a passive wave-shaped surface matched with the second active wave-shaped surface is arranged on one side, facing the bottom wall of the first tooth socket, of the second driving part; under the action of the first spring, the gear is meshed with the first tooth groove and the second tooth groove at the same time, and one side of the gear, facing to the bottom wall of the first tooth groove, abuts against the second driving piece.

The frame lock releasing mechanism comprises a lock releasing piece and a torsion spring, a containing groove is formed in the lower end of the seat plate, one end of the lock releasing piece is pivoted in the containing groove, the torsion spring is arranged between the end of the lock releasing piece and the seat plate, one end of the first steel wire is connected to the lock releasing piece, the other end of the first steel wire is connected with the backrest locking mechanism, the other end of the lock releasing piece is pulled to rotate downwards to release the frame locking mechanism, and the first steel wire is also pulled by the lock releasing piece to release the backrest locking mechanism.

The seat board can be connected to the supporting seat in a manner of rotating 360 degrees around the Y axis relatively, and a seat locking mechanism used for limiting the relative rotation of the supporting seat and the seat board is arranged between the supporting seat and the seat board.

The seat board is also provided with a seat unlocking device for unlocking the seat locking mechanism.

The invention has the beneficial effects that:

1. when the frame locking mechanism is unlocked, the backrest locking mechanism is also unlocked, so that when the frame is folded, the backrest of the seat can be folded in a linkage manner, namely the seat backrest can be folded along with the frame, the operation steps for folding the frame are reduced, and the folding operation of the whole baby carriage is simpler and more convenient;

2. the seat can rotate 360 degrees relative to the frame, so that when the orientation of the seat is changed, only the seat locking mechanism needs to be unlocked and then the seat needs to be rotated, and therefore the front and back direction change is achieved through the rotation of the seat;

drawings

Fig. 1 is a schematic perspective view of a stroller with a foldable backrest and a foldable seat;

FIG. 2 is a schematic view of the frame of the stroller of the present invention shown separated from the seat;

FIG. 3 is an enlarged schematic view of the portion B of FIG. 2;

FIG. 4 is a rear view of the seat pan of the stroller of the present invention;

FIG. 5 is an enlarged view of the portion C of FIG. 4;

FIG. 6 is an exploded view of the portion C of FIG. 4;

FIG. 7 is an exploded enlarged view of the seat pan portion of the stroller of the present invention;

FIG. 8 is an enlarged schematic view of the third drive member of the stroller of the present invention;

FIG. 9 is an enlarged view of the portion D in FIG. 7;

FIG. 10 is an enlarged rear view of the seat pan of the stroller of the present invention;

FIG. 11 is an enlarged view of section E of FIG. 10;

FIG. 12 is an exploded view of the seat pan of the stroller of the present invention from another angle;

FIG. 13 is a schematic view of the stroller of the present invention with the armrest adjusted to the retracted position;

FIG. 14 is an enlarged view from another angle according to portion A of FIG. 1;

FIG. 15 is an exploded view of the first portion of the locking mechanism of the vehicle frame of FIG. 1;

FIG. 16 is an exploded view of the second embodiment of FIG. 1;

FIG. 17 is an exploded view of the third embodiment of FIG. 1;

FIG. 18 is an exploded view of a fourth schematic view according to section A of FIG. 1;

FIG. 19 is an enlarged schematic view of a portion of the assembly according to section A of FIG. 1 in a frame unlocked condition;

FIG. 20 is an exploded view of section A of FIG. 1;

FIG. 21 is an enlarged cross-sectional view of one of the angles of the stroller of the present invention;

FIG. 22 is an enlarged view of portion F of FIG. 21;

FIG. 23 is an enlarged schematic view taken generally along section F of FIG. 21 in a release condition of the vehicle frame;

FIG. 24 is an exploded, enlarged schematic view of a portion of the assembly according to section A of FIG. 1;

FIG. 25 is an enlarged cross-sectional view of portion A of FIG. 1 with the stroller rider locking mechanism of the present invention in a locked condition;

FIG. 26 is an enlarged cross-sectional view of portion A of FIG. 1 with the stroller rider locking mechanism in a unlocked condition in accordance with the present invention;

FIG. 27 is an enlarged schematic view of the stroller rider in use positioned relative to the positioning block;

FIG. 28 is an enlarged schematic view of the relative position of the pushchair rider to the positioning block when the pushchair rider is in the retracted position;

fig. 29 is an exploded enlarged schematic view according to part C in fig. 2;

fig. 30 is an exploded enlarged schematic view according to another angle of the portion C in fig. 2;

FIG. 31 is an enlarged view of the engagement of the gear with the first drive member of the stroller of the present invention;

fig. 32 is an enlarged cross-sectional view of one of the angles of the stroller of the present invention.

Detailed Description

As shown in fig. 1 to 32, the stroller with a foldable backrest and a foldable seat in linkage comprises a frame 1 having an unfolded state and a folded state, a frame locking mechanism for locking the frame 1 in the unfolded state, a seat 2 disposed on the frame, the frame 1 comprises a left bracket 10 and a right bracket 10, a supporting seat 100 connected with the left bracket and the right bracket, the seat 2 is disposed on a support base 100, the seat 2 includes a seat plate 21 for seating, the seat plate 21 is provided with a frame lock release mechanism for releasing the frame lock mechanism, the seat 2 further comprises a backrest 22 with the lower end pivoted to the rear side of the seat plate 21, a backrest locking mechanism for limiting the relative rotation of the backrest 22 and the seat plate 21 is arranged between the backrest and the seat plate, and the backrest locking mechanism is arranged, when the frame lock mechanism is unlocked by the frame lock release mechanism, the backrest lock mechanism is also released. That is, the frame lock release mechanism can both release the frame lock mechanism and the backrest lock mechanism, so that when the frame lock release mechanism is driven to release the frame lock mechanism, the backrest lock mechanism is also released.

The seat plate 21 is connected to the support base 100 to be rotatable about the Y-axis by 360 degrees relatively, and a seat locking mechanism for limiting the relative rotation between the support base 100 and the seat plate 21 is disposed therebetween.

In this embodiment, preferably, the seat 2 further includes a backrest 22 having a lower end pivotally connected to a rear side of the seat plate 21, a backrest locking mechanism for limiting relative rotation between the backrest 22 and the seat plate 21 is disposed between the backrest and the seat plate, and the backrest locking mechanism is configured to be unlocked when the frame locking mechanism is unlocked by the frame unlocking mechanism. That is, the frame lock release mechanism can both release the frame lock mechanism and the backrest lock mechanism, so that when the frame lock release mechanism is driven to release the frame lock mechanism, the backrest lock mechanism is also released.

The frame locking mechanism comprises a locking piece 41 and a torsion spring 42, the lower end of the seat plate 21 is provided with a containing groove 211, one end of the locking piece 41 is pivoted in the containing groove 211, the torsion spring 42 is arranged between the end of the locking piece 41 and the seat plate 21, and the other end of the locking piece 41 is pulled to rotate downwards to lock the frame locking mechanism; when the frame is in the unfolded state, the unlocking part 41 is located in the containing groove 211 under the action of the torsion spring 42, and when the seat 2 rotates 360 degrees relative to the supporting seat 100, the unlocking part 41 and the torsion spring 42 do not interfere with each other, that is, the frame unlocking mechanism does not interfere with the rotation of the seat.

The frame lock releasing mechanism further comprises an actuating member 43, a through hole 212 which penetrates through the seat plate 21 from top to bottom is formed in one side, away from the side support 10, of the accommodating groove 211, one end of the actuating member 43 is connected with the other side of the lock releasing member 41, the other end of the actuating member 43 penetrates through the through hole 212 upwards and then is located above the seat plate 21, when the frame is in an unfolded state, the actuating member 43 cannot be exposed out of the lower end of the seat plate 21, and therefore the frame lock releasing mechanism cannot cause interference when the seat 2 rotates relative to the supporting seat 100.

Preferably, the other side of the release member 41 is further provided with a traction portion 411 extending downward, and one end of the actuating member 43 is connected to the traction portion 411. This arrangement facilitates the connection of the actuators 43.

Preferably, a notch 2111 is formed in a side wall of the receiving groove 211 facing the through hole 212, and the other end of the actuating element 43 passes through the through hole 212 from the notch 2111 and then is located above the seat plate 21. Specifically, the other end of the actuator 43 passes through the receiving groove 211, passes through the notch 211, and then passes through the through hole 212 to be located above the seat plate 21.

In this embodiment, as shown in fig. 4, 5 and 22, preferably, the lower end of the seat plate 21 is provided with a receiving groove 2112, the receiving groove 211 is disposed in the receiving groove, and the lower end surface of the receiving groove 211 is higher than the lower end surface of the receiving groove 2112. With this arrangement, it is further ensured that the frame lock release mechanism does not interfere with the seat 2 when it rotates relative to the support base 100.

Seat locking mechanical system includes locking piece 301, reset spring, set up in the lower locking groove 110 of supporting seat 100 up end, set up in the last locking groove 201 of bedplate 21 lower extreme face corresponding position, locking piece 301 one end is arranged in going up locking groove 201, reset spring set up in go up between locking groove 201 roof and the locking piece 301 under reset spring's effect, locking piece 301 upper end is located the last locking groove of bedplate 21, and the lower extreme is located the lower locking groove 110 of frame 1 supporting seat 100 to seat 2 can not rotate relative frame 1, and both are in relative locking state.

The upper end surface of the seat plate 21 is provided with a through hole 2010 communicated with the upper locking groove 201, the seat plate 21 is further provided with a seat unlocking device for unlocking the seat locking mechanism, the seat unlocking device comprises a third driving piece 401 connected to the seat plate 21 in a relatively forward and backward movement manner, and a third steel wire 402 with one end connected with the third driving piece 401, and the other end of the third steel wire 402 penetrates through the through hole 2010 from top to bottom to be connected with the locking block 301. When the third driving element 401 is moved, the locking block 301 is pulled to move upwards by the third steel wire 402, so that the lower end of the locking block 301 is separated from the lower locking groove 110, the locking block 301 is completely retracted into the upper locking groove 201, and at this time, the seat locking mechanism is unlocked, and the seat 2 can rotate 360 degrees around the Y axis relative to the frame 1. When the seat 2 is rotated to the desired position, the third actuator 401 is released, and the lock block 301 is moved downward by the return spring, so that the lock block 301 is again engaged with the upper lock groove 201 and the lower lock groove 110 at the same time, and the seat 2 is oriented to the oriented position. Since the seat unlocking device is disposed on the seat plate 21, after the seat locking mechanism is unlocked, the seat plate 21 can be pushed to rotate by directly rotating the third driving member 401, that is, the seat 2 is pushed to rotate, and there is no need to push other parts of the seat 2, so that the operation is very convenient.

In the present embodiment, the seat 2 is set to two orientation positions, i.e., forward and backward. That is, only when the seat 2 is in the forward or backward position, the lock block 301 can be simultaneously engaged with the upper lock groove 201 and the lower lock groove 110, that is, the seat 2 can be positioned only in the forward or backward position. In other embodiments, a plurality of directions, i.e., a plurality of upper locking grooves 201 and lower locking grooves 110 at different positions, may be provided as required.

A stroke groove 202 which is recessed downwards is formed in the upper end of the seat plate 21 between the third driving element 401 and the locking block 301, one end of the stroke groove 202 is communicated with the through hole 2010, one end of the third steel wire 402 is connected with the third driving element 401, the other end of the third steel wire is routed along the stroke groove 202, and the other end of the third steel wire 402 passes through the through hole 2010 and is connected with the locking block 301. The third wire 402 is routed in the stroke groove 202, so that the upper end surface of the seat plate 21 is smoother and is not uneven due to the presence of the third wire 402.

In this embodiment, preferably, the seat plate 21 is provided with a downward recessed accommodating groove 203 between the third driving element 401 and the locking block 301, a bottom wall of the accommodating groove 203 is recessed downward to form the stroke groove 202, a top cover plate 204 is connected to the seat plate 21 and disposed in the accommodating groove 203, and an upper end surface of the top cover plate 204 is flush with an upper end surface of the seat plate 21. With such an arrangement, the lower end surface of the top cover plate 204 covers the stroke groove 202, so that the third steel wire 402 can be prevented from coming out of the stroke groove 202 during use, and the flatness of the upper end surface of the seat plate 21 cannot be affected by the top cover plate 204.

In this embodiment, a placing groove 205 is concavely formed on a lower end surface of the seat plate 21 on a side where the third driving member 401 is disposed, and an operation hole 206 penetrating through the seat plate 21 is disposed in the middle of the placing groove 205; correspondingly, the third driving element 401 includes a mounting plate 4011 and an operating portion 4012 extending upward from the middle of the upper end of the mounting plate 4011, the mounting plate 4011 is disposed in the placement groove 205 in a relatively back and forth moving manner, the operating portion 4012 extends upward and is located in the operating hole 206, and the front-back width of the operating hole 206 is greater than the front-back width of the operating portion 4012; one end of the third steel wire 402 is connected to the mounting plate 4011, a communication hole 207 communicating with one end of the stroke slot 202 far away from the through hole 2010 is formed between the third driving element 401 and the locking block 301 at the lower end of the seat plate 21, and the other end of the third steel wire 402 passes through the communication hole 207 and then enters the stroke slot 202. The third steel wire 402 can be pulled to interlock the locking block 301 by moving the operating part 4012 back and forth to move the third driving element 401 back and forth.

The bottom end of the seat plate 21 is connected to a bottom cover plate 208, and the bottom cover plate 208 is located at the lower end of the accommodating groove 203, so that the third driving member 401 can be prevented from falling off from the bottom plate.

In this embodiment, the third driving member 401 is connected to the front side of the seat plate 21 in a relatively forward and backward movement manner, in other embodiments, the third driving member 401 is also connected to the rear side of the seat plate 21 in a relatively forward and backward movement manner, and correspondingly, the positions of other components are changed accordingly.

In this embodiment, preferably, the upper locking grooves 201 are symmetrically disposed about the Y axis, correspondingly, two lower locking grooves 110 are symmetrically disposed, and two locking blocks 301 are symmetrically disposed, so that when the seat 2 is locked, the upper and lower ends of the two locking blocks 301 are respectively clamped into the lower locking grooves 110 and the upper locking grooves 201 at corresponding positions. Correspondingly, two third steel wires 402 are also arranged, and one end of each of the two third steel wires 402 is connected to the third driving member 401. So arranged, the locking of the seat 2 will be made more reliable.

A plurality of rollers 5 are arranged on the upper side of the supporting seat 100 in an annular array by taking the Y axis as a circle center, and the upper sides of the rollers 5 are exposed out of the upper end of the supporting seat 100; correspondingly, the lower end face of the seat plate 21 is provided with an annular groove 216, and the part of the roller 5 exposed out of the upper end of the support base 100 is placed in the annular groove 216. The seat 2 is rotated more smoothly, and the rollers 5 are disposed to reduce friction force, thereby preventing abrasion between the seat plate 21 and the support base 100. It should be noted that the roller 5 may be disposed at the lower side of the seat plate 21, and correspondingly, the annular groove 216 is disposed at the upper end surface of the support seat 100.

In this embodiment, the plurality of rollers 5 are located on the same circle as the center of the upper locking groove 201, and a recess 3011 corresponding to the annular groove 216 is formed in the middle of the lower end of the locking block 301 so that the seat 2 is not blocked from rotating. So that the bottom end surface of the recess 3011 is flush with the bottom end surface of the upper lock groove 210 after the lock block 301 is completely retracted into the upper lock groove 201. In this way, the locking block 301 does not interfere with the rotation of the seat 2.

Preferably, a circular boss 217 protrudes downward from the lower end of the seat plate 21, the circular boss 217 can be connected to the support base 100 around the Y axis in a manner of rotating 360 degrees relatively, and correspondingly, the upper locking groove 201 and the annular groove 216 are disposed on the lower end surface of the circular boss 217. With this arrangement, the bottom end of the seat plate 21 does not need to be in full-area contact with the support base 100, so that the seat 2 can rotate more smoothly.

In this embodiment, each of the side frames 10 includes a rider 11, a front leg 12, a rear leg 13, a first link 14, and a second link 15, the lower end of the rider 11, the rear end of the front leg 12, and the front end of the rear leg 13 are pivotally connected by a first pivot 16, the upper end of the first link 14 is connected to the rider 11 by a second pivot 17, the upper end of the second link 15 is pivotally connected to the front leg 12 by a third pivot 18, the lower end of the first link 14 is pivotally connected to the lower end of the second link 15, and the lower ends of the first link 14 and the second link 15 are connected to the rear leg 13 together in a manner of moving up and down relatively.

The rear leg 13 is provided with a long hole 130 extending along the length of the rear leg 13, the lower ends of the first link 14 and the second link 15 are pivotally connected by a fourth pivot 19, and the fourth pivot 19 is connected to the long hole 130 so as to be movable up and down relatively. In this embodiment, the front leg 12 and the rider 11 are respectively pivoted to the left and right sides of the rear leg 13, the middle of the fourth pivot 19 passes through the slot 130, and the left and right ends are respectively pivoted to the lower ends of the first link 14 and the second link 15. In other embodiments, a moving member capable of moving relative to the rear leg 13 may be disposed on the rear leg 13, and the lower ends of the first link 14 and the second link 15 are pivotally connected to the moving member (not shown).

Preferably, the first connecting rod 14 and the second connecting rod 15 are both made of iron sheets, so as to increase the strength of the whole linkage.

In this embodiment, the lower end of the rider 11 is connected to a first pivot 111, the rear end of the front leg 12 is connected to a second pivot 121, the front end of the rear leg 13 is fixedly connected to a third pivot 131, the first pivot 111, the second pivot 121, and the third pivot 131 are pivotally connected through the first pivot 16, the upper end of the first link 14 is pivotally connected to the first pivot 111 through the second pivot 17, the upper end of the second link 15 is pivotally connected to the second pivot 121 through the third pivot 18, and the slot 130 is disposed on the third pivot 131. That is, the lower ends of the first and second links 14 and 15 are connected to the rear leg 13 so as to be movable upward and downward relative to each other.

Preferably, the third pivoting member 131 is further provided with an arc-shaped hole 132, the second pivoting member 121 is further provided with a pivoting hole 1211, and a fifth pivot 133 passes through the arc-shaped hole 132 and the pivoting hole 1211. So that the fifth pivot 133 moves along the arc-shaped hole 132 when the front leg 12 rotates relative to the rear leg 13, i.e. the second pivot 121 rotates relative to the third pivot 131. The arrangement makes the connection between the front leg 12 and the rear leg 13 more stable, and also can provide a guide for the rotation of the front leg 12, so that the relative rotation of the rider 11, the front leg 12 and the rear leg 13 is smoother.

The frame locking mechanism comprises a locking piece 31, a second spring 32, a first locking groove 112, a second locking groove 122 and a third locking groove 134 which are respectively arranged at the corresponding positions of the first pivoting piece 111, the second pivoting piece 121 and the third pivoting piece 131, the second pivoting piece 121 is relatively and fixedly connected with the supporting seat 100, the locking piece 31 is connected with the second pivoting piece 121 in a manner of relatively moving left and right, and the second spring 32 is arranged between one end of the locking piece 31 far away from the side bracket 10 and the second pivoting piece 121; or the locking piece 31 can be connected to the supporting seat 100 in a manner of moving left and right relatively, and the second spring 32 is disposed between one end of the locking piece 31 far away from the side bracket 10 and the supporting seat 100; under the action of the second spring 32, one end of the locking member 31 penetrates into the second locking groove 122, the third locking groove 134 and the first locking groove 112 in sequence, so that the first pivot member 111, the second pivot member 121 and the third pivot member 131 cannot rotate relatively, that is, the rider 11, the front leg 12 and the rear leg 13 cannot rotate relatively, the frame locking mechanism is in a locking state, and the frame 1 is locked in a unfolding state; when the frame locking mechanism is to be unlocked, the locking member 31 is moved in a direction away from the side bracket 10, so that one end of the locking member 31 is disengaged from the first locking groove 112 and the third locking groove 134, and at this time, the frame locking mechanism is unlocked, and the rider 11, the front leg 12 and the rear leg 13 can rotate relatively. The second spring 32 may be provided in any known and feasible manner, as long as the function thereof is achieved.

In this embodiment, the second pivot 121 extends from the corresponding position where the second locking groove 122 is formed to one side of the supporting base 100 to form a hollow installation tube 123, the supporting base 100 includes a hollow action tube 101 extending left and right, the hollow action tube 101 is fixedly inserted into the hollow installation tube 123 towards one end of the side bracket 10, the locking member 31 is disposed in the hollow action tube 101 so as to be movable left and right, the second spring 32 is disposed between the end of the locking member 31 far away from the side bracket 10 and the hollow action tube 101, and the locking member 31 keeps a tendency of being inserted into the three locking grooves under the action of the second spring 32.

Preferably, the second pivot element 121 includes a connecting element 124 and a reinforcing element 125, the connecting element 124 and the reinforcing element 125 are pivotally connected to the first pivot element 111 and the third pivot element 131 through the first pivot 16, and the connecting element 124 and the reinforcing element 125 are both provided with second locking slots 122 at corresponding positions; the connecting member 124 includes a body 1241 and a connecting portion 1242 extending from the body 1241 to one side of the front foot 12, one end of the stiffener 125 is fixedly connected to the connecting portion 1242 and the front foot 12, and the other end is located at one side of the body 1241 departing from the hollow mounting tube 123; the hollow mounting pipe 123 extends from the body 1241 to one side of the support base 100.

In this embodiment, preferably, the third pivot element 131 includes a main body 1311 and a reinforcement element 1322 disposed on a side of the main body 1311 facing the support base 100, rear ends of the main body 1311 and the reinforcement element 1322 are fixedly connected to a front end of the rear leg 13, and the main body 1311 and the reinforcement element 1322 are disposed with the third locking groove 134, the arc hole 132, and the long hole 130. With such an arrangement, the third pivot member 131 is conveniently connected to the first pivot member 111 and the second pivot member 121, and the strength of the third pivot member 131 is increased.

The upper end of the locking piece 31 is provided with an operation hole 311 which is concave downwards, the upper wall of the hollow action tube 101 is provided with a communicating hole 1011, and the operation hole 311 and the communicating hole 1011 are communicated with the containing groove 211 up and down.

In this embodiment, preferably, the hollow acting tubes 101 are provided with a plurality of hollow acting tubes, the supporting seat 100 further includes a supporting plate 102 fixedly connected to the hollow acting tubes 101, and the seat is connected to the supporting plate 102. The support plate 102 is also provided with a through hole 1020 corresponding to the receiving groove 211, the operation hole 311 and the communication hole 1011.

The frame locking mechanisms are symmetrically provided with a left group and a right group corresponding to the left bracket 10 and the right bracket 10; alternatively, the two sets of frame locking mechanisms may share one spring 32, and the spring 32 is located between the locking members 31 of the two sets of frame locking mechanisms; the frame release mechanisms are also symmetrically provided with a left group and a right group, the actuating components 43 are woven belts, and the woven belts of the left frame release mechanism and the right frame release mechanism are integrally formed. That is, one end of one webbing is connected to the traction part 411 of the unlocking part 41 of one frame unlocking mechanism, and the other end is connected to the traction part 411 of the unlocking part 41 of the other frame unlocking mechanism, so that the left and right frame locking mechanisms can be unlocked simultaneously by lifting up the webbing. The webbing may also be connected in other known ways such as adjustable length.

When the stroller of the present invention is to be folded, the actuator 43 is pulled upward, the other end of the lock release member 41 is driven to rotate downward and pass through the communication hole 1011 and then enter the operation hole 311 of the lock member 31, when the lock release member 41 further rotates, the side wall 312 of the side of the lock member operation hole 311 away from the side of the side bracket 10 is pushed to move in the direction away from the side of the side bracket 10, that is, the lock member 3 is pushed to move in the direction away from the side of the side bracket 10, so that the lock member 31 is separated from the locking with the first locking groove 112 and the third locking groove 134, the frame locking mechanism releases the lock, the handle 11, the front leg 12 and the rear leg 13 rotate relatively and approach, and the stroller frame 1 is folded.

As shown in fig. 24 to 28, in the present embodiment, the first pivot 111 includes a fixing seat 1111, the lower end of the rider 11 is pivoted to the fixing seat 1111, a rider locking mechanism for limiting the relative rotation between the rider 1 and the fixing seat 1111 is disposed between the rider and the fixing seat 1111, and a rider unlocking mechanism for unlocking the rider locking mechanism is further disposed on the frame 1.

A mounting groove 1112 is arranged on one side of the fixing seat 1111 facing the rider 11, the lower end of the rider 11 can be relatively rotatably placed in the mounting groove 1112 in a forward and backward manner, a front abutting surface 1113 and a rear abutting surface 1114 are respectively arranged on the side wall of the mounting groove 1112 in the forward and upward direction and the rear and downward direction, and a clamping groove 1115 is arranged between the front abutting surface 1113 and the rear abutting surface 1114 on the side wall of the mounting groove 1112; the driver locking mechanism comprises a clamping tenon 61 which can move up and down relatively and is arranged in the lower end of the driver 11, a third spring 62 which is arranged between the clamping tenon 61 and the driver 11, under the action of the third spring 62, the lower end of the clamping tenon 61 extends out of the lower end of the driver 11 and is clamped in the clamping groove 1115, so that the driver 11 cannot rotate relative to the first pivoting piece 111.

The first locking groove 112 is disposed on the fixing seat 1111, and the first locking groove 112 and the mounting groove 1112 are disposed on different sides of the fixing seat respectively. Thus, the rider does not influence the frame locking mechanism when rotating.

Preferably, the rider locking mechanism further comprises a spring seat 63, the spring seat 63 is fixedly connected with the lower end of the rider 11, the upper end of the spring seat 63 is located in the rider 11, the spring seat 63 is arranged to be open downwards, and thus the upper end is formed to have a top wall 631; the tenon 61 comprises a main body 611 and two baffles 612 symmetrically extending outwards from the main body 611, the main body 611 is connected with the spring seat 63 in a relatively up-down moving manner, and two third springs 62 are arranged and respectively disposed between the two baffles 612 and the spring seat top wall 631.

When the seat 2 is in the use state, the front side of the rider 11 abuts against the front abutting surface 1113; when the seat 2 is to be rotated, the rider unlocking mechanism is operated to move the trip 61 upwards, so that the lower end of the trip 61 is separated from the slot 1115, at this time, the rider 11 can rotate backwards and downwards relative to the fixed seat 1111 until the rear side of the rider contacts with the rear abutting surface 1114, the rider 11 is in a state of being approximately laid flat, at this time, the rider 11 is in an avoiding position, at this time, the seat 2 can be rotated, and the rider 11 cannot interfere with the rotation of the seat 2; when the seat 2 is reversed back and forth, the rider 11 is rotated upwards, the clamping tenon 61 is automatically clamped into the clamping groove 1115 under the action of the third spring 62, and the rider 11 is locked. The arrangement of the front and rear abutment surfaces 1113, 1114 may define the rotation angle of the rider 1.

In this embodiment, the first pivot base 111 further includes an outer cover 15, the outer cover 15 is pivoted to the outer side of the fixing base 1111, and the lower end of the rider 11 is fixedly connected to the outer cover 15, so that when the rider angle is adjusted, the outer cover 15 and the rider 11 rotate together relative to the fixing base 1111. The outer cover 15 covers the rider lock mechanism.

In this embodiment, the locking mechanism includes an operating element 71 (as shown in fig. 13) connected to the rider 11 and capable of moving up and down relatively, and a steel wire 72 connecting the operating element 71 and the latch 61, and the steel wire 72 is routed in the rider 11 and moves up the operating element, i.e., the steel wire 72 is driven to move up to pull the latch 61 to move up to disengage from the slot 1115.

The locking mechanism of the rider can be any other known mechanism, and the unlocking mechanism of the rider can be any other known mechanism as long as the locking mechanism can pull the latch 61 upwards.

As described above, after the locking mechanism is released, the rider 11 rotates relative to the fixing seat 1111, the fixing seat 1111 does not rotate, and the first locking groove 112 is disposed on the fixing seat 1111, so that the rotation of the rider 1 does not affect the unfolding and folding of the frame.

The backrest locking mechanism comprises a gear 51 and a first spring 52, wherein the gear 51 is arranged between the first tooth socket 2211 and the second tooth socket 2101, the first spring 52 is arranged between the bottom wall of the gear 51 and the second tooth socket 2101, the gear 51 is simultaneously meshed with the first tooth socket 2211 and the second tooth socket 2101 under the action of the first spring 52, and therefore the backrest 22 and the seat plate 21 cannot rotate relatively.

The backrest locking mechanism further comprises a first driving part 53 arranged in the second tooth groove 2101 and used for driving the gear 51 to be separated from the first tooth groove 2211, one end of a first steel wire 54 is connected to the first driving part 53, the other end of the first steel wire is connected with the frame unlocking mechanism and driven by the frame unlocking mechanism, when the frame locking mechanism is unlocked through the frame unlocking mechanism, the first steel wire 54 is pulled by the frame unlocking mechanism, so that the first driving part 53 is linked to drive the gear 51 to be separated from the first tooth groove 2211, and the backrest locking mechanism is unlocked.

In this embodiment, the lower end of the seat plate 21 is provided with a channel for the first steel wire 54 to run, which communicates the receiving groove 211 with the backrest locking mechanism, so that the first steel wire 54 is not exposed out of the lower end of the seat plate 21 when the frame is unfolded, thereby avoiding interference between the seat 2 and the supporting seat 100, i.e. avoiding interference caused by rotation of the seat by the first steel wire 54.

A hole 213 is formed in a side wall of one side of the receiving groove 211, the other end of the first steel wire 54 is connected to the unlocking element 41, and one end of the first steel wire penetrates through the hole 213 and enters the channel to be connected to the first driving element 53.

The first driving member 53 is relatively rotatably arranged in the inner ring of the gear 51, and one end of the first driving member 53, which is far away from the bottom wall of the second gear groove 2101, is located in the inner ring of the gear 51, a first driven wavy boss 511 is convexly arranged on the inner ring wall of the gear 51, correspondingly, a first driving wavy boss 531 is arranged on the periphery of the first driving piece 53, the first driving wave-shaped boss 531 is engaged with the first driven wave-shaped boss 511, when the frame lock mechanism is unlocked by the frame lock release mechanism, the first wire 54 is pulled downward, the first driving member 53 rotates, by the cooperation of the first driving wavy projection 531 and the first driven wavy projection 511, the gear 51 moves into the second slot 2101 out of engagement with the first slot 2211, thereby achieving the unlocking of the backrest locking mechanism, and the backrest 22 can be folded by rotating relative to the seat plate 21.

Preferably, a convex pillar 2102 extending left and right is arranged in the middle of the bottom wall of the second gear groove 2101, the first driving member 53 is relatively rotatably sleeved outside the convex pillar 2102, a washer 2103 is fixedly connected to one side of the convex pillar 2102 facing the bottom wall of the second gear groove 2101, a butting portion 532 extends from one side of the first driving member 53 facing the bottom wall of the second gear groove, the washer 2013 butts against the butting portion 532, and therefore the first driving member 53 can only rotate relative to the convex pillar 2102 and cannot move left and right, and the gear 51 moves.

In this embodiment, the backrest is also provided with a second lock release mechanism for releasing the backrest lock mechanism, and the second lock release mechanism is provided so that, when the backrest lock mechanism is released by the second lock release mechanism, the frame lock mechanism is maintained in a state in which the frame is in the unfolded state.

The second unlocking mechanism comprises a second driving wavy surface 2212 arranged on the bottom wall of the first tooth slot 2211, a second driving element 222 arranged in the first tooth slot 2211 in a relatively rotatable manner and relatively leftwards and rightwards moving manner, a second steel wire (not shown) with the lower end connected with the second driving element 222, and a second operating device 223 arranged on the upper side of the backrest 22 and capable of pulling the second steel wire upwards, wherein the upper end of the second steel wire is connected with the second operating device; a passive wave surface 2221 matched with the second active wave surface 2212 is arranged on one side of the second driving element 222 facing the bottom wall of the first tooth slot 2211; under the action of the first spring 52, the gear 51 is simultaneously engaged with the first tooth slot 2211 and the second tooth slot 2101, and one side of the gear 51 facing the bottom wall of the first tooth slot 2211 abuts against the second driving member 222. At this time, the backrest 22 cannot rotate relative to the seat plate 21, and the backrest 22 is positioned at the inclined angle; when the inclination angle of the backrest 22 is to be adjusted in the unfolded state of the frame, the second operating device is driven to move the second steel wire upwards, so that the second driving element 222 is pulled to rotate, and under the interaction of the second active wavy surface 2212 and the passive wavy surface 2221, the second driving element 222 moves towards the direction of the gear 51, so that the gear 51 is pushed to be disengaged from the first tooth slot 2211 and only engaged with the second tooth slot 2101, so that the backrest locking mechanism is released, and at this time, the backrest 22 can be rotated back and forth to adjust the inclination angle of the backrest 22 relative to the seat plate 21. Because the first driving element 53 is relatively rotatably inserted into the inner ring of the gear 51, and the end of the first driving element 53 away from the bottom wall of the second gear 2101 is located in the inner ring of the gear 51, no matter how the second driving element 222 and the gear 51 move, the first driving element 53 is not influenced, i.e., cannot be pushed, so that the frame locking mechanism is not influenced, i.e., the unfolding state of the frame is not influenced, and the safety of the frame in the unfolding state is ensured.

The second operating device 223 can be any known structure, and in other embodiments, the second release mechanism can be configured as other known structures. For example, in one embodiment (not shown), the second operating mechanism includes a button connected to the backrest pivot seat 221 in a manner of moving left and right relatively, the button includes a body and a plurality of elastic fingers spaced from each other and extending from the body to a side facing the gear 51, and correspondingly, the backrest pivot seat 221 is provided with a plurality of through holes spaced from each other, and the elastic fingers extend into the first tooth slots 2211 after passing through the through holes and abut against the gear 51. Therefore, when the backrest inclination angle is adjusted, the elastic finger can push the gear 51 to move towards the second tooth groove 2101 and disengage from the first tooth groove 2211 by pressing the button body, so that the backrest locking mechanism is released, and the inclination angle of the backrest 22 relative to the seat plate 21 can be adjusted.

In this embodiment, the backrest 22 is set as an inverted U-shaped backrest tube, the lower ends of the left and right sides of the inverted U-shaped backrest tube are fixedly connected with the backrest pivot seat 221, correspondingly, the left and right sides of the seat plate 21 are provided with the seat pivot seat 210, and the backrest locking mechanisms are symmetrically provided with two sets. In other embodiments, the backrest 22 can also be configured as a backrest plate, and the lower ends of the left and right sides of the backrest plate are respectively formed or fixedly connected with the backrest pivot seat 221 together.

In the above description of the orientation, the seat 2 is located at the top, the support base 100 is located at the bottom, the left and right brackets 10 are located at the left and right sides, the third driving member 401 is located at the front, and the locking block 301 is located at the rear.

Claims

1. The utility model provides a baby carriage that seat is backed and to be linked receipts is closed, its including have the frame of expansion state and receipts state, with the frame lock in the frame locking mechanical system of expansion state, set up in seat on the frame, its characterized in that: the frame includes a supporting seat, the seat sets up on the supporting seat, the seat is including the bedplate that supplies to take, be provided with on the bedplate and be used for the release lock frame release lock mechanism of frame locking mechanism, the seat still include the lower extreme pin joint in the back of bedplate rear side, be provided with the back of the restriction both relative rotation between back and the bedplate and lean on locking mechanism, just back locking mechanism is set up to, when passing through frame release lock mechanism when releasing frame locking mechanism, back locking mechanism is also released the lock.

2. The stroller of claim 1, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the frame still includes left and right sides support, the supporting seat is connected left and right sides support.

3. The stroller according to claim 1 or 2, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the backrest is also provided with a second lock release mechanism for releasing the backrest lock mechanism, and the second lock release mechanism is provided so that, when the backrest lock mechanism is released by the second lock release mechanism, the lock mechanism is maintained in a state in which the vehicle frame is in the unfolded state.

4. The stroller of claim 1, 2 or 3, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the backrest comprises a backrest left side and a backrest right side, wherein two ends of the backrest left side and the backrest right side are respectively and fixedly connected with a backrest pin joint seat, the seat plate left side and the seat plate right side are symmetrically provided with seat pin joint seats, the backrest pin joint seats are in pin joint with the seat pin joint seats, opposite sides of the backrest pin joint seats and the seat pin joint seats are respectively provided with a first tooth groove and a second tooth groove, the backrest locking mechanism comprises a gear and a first spring, the gear and the first spring are arranged between the first tooth groove and the second tooth groove, and the gear is meshed with the first tooth groove and the second tooth groove simultaneously under the action of the first spring.

5. The stroller of claim 4, wherein the seat back is foldable in a linked manner, and the seat back comprises: and a first driving part used for driving the gear to be separated from the first tooth groove is also arranged in the second tooth groove, one end of a first steel wire is connected with the first driving part, and the other end of the first steel wire is connected with the frame unlocking mechanism and driven by the frame unlocking mechanism.

6. The stroller of claim 5, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the first driving piece penetrates through the inner ring of the gear in a relatively rotating mode, one end, far away from the bottom wall of the second tooth socket, of the first driving piece is located inside the inner ring of the gear, a first driven wave-shaped boss is arranged on the inner ring wall of the gear in a protruding mode and corresponds to the first driven wave-shaped boss, the first driving piece is provided with the first driving wave-shaped boss in the periphery, the first driving wave-shaped boss is matched with the first driven wave-shaped boss, when the frame locking mechanism is used for unlocking the frame locking mechanism, the first steel wire is pulled downwards, the first driving piece rotates, and through the matching of the first driving wave-shaped boss and the first driven wave-shaped boss, the gear moves towards the second tooth socket and is separated from the meshing with the first tooth socket.

7. The stroller of claim 5 or 6, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the second lock releasing mechanism comprises a second driving wavy surface arranged on the bottom wall of the first tooth groove, a second driving piece which can rotate relatively and is arranged in the first tooth groove in a relatively left-right moving mode, a second steel wire of which the lower end is connected with the second driving piece, and a second operating device which is arranged on the upper side of the backrest and can pull the second steel wire upwards, wherein the upper end of the second steel wire is connected with the second operating device; a passive wave-shaped surface matched with the second active wave-shaped surface is arranged on one side, facing the bottom wall of the first tooth socket, of the second driving part; under the action of the first spring, the gear is meshed with the first tooth groove and the second tooth groove at the same time, and one side of the gear, facing to the bottom wall of the first tooth groove, abuts against the second driving piece.

8. The stroller of claim 5, 6 or 7, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the frame unlocking mechanism comprises an unlocking piece and a torsion spring, a containing groove is formed in the lower end of the seat plate, one end of the unlocking piece is pivoted in the containing groove, the torsion spring is arranged between the end of the unlocking piece and the seat plate, one end of the first steel wire is connected to the unlocking piece, the other end of the first steel wire is connected with the backrest locking mechanism, the other end of the unlocking piece is pulled to rotate downwards to unlock the frame locking mechanism, and the first steel wire is pulled by the unlocking piece to unlock the backrest locking mechanism; preferably, the lower end of the seat plate is provided with a channel for the first steel wire to run, which is communicated with the accommodating groove and the backrest locking mechanism.

9. The stroller of claim 6, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the seat plate can be connected to the supporting seat in a manner of rotating 360 degrees around the Y axis relatively, and a seat locking mechanism for limiting the relative rotation of the supporting seat and the seat plate is arranged between the supporting seat and the seat plate; preferably, a plurality of rollers are arranged on the upper side of the supporting seat in an annular array by taking the Y axis as a circle center, and the upper sides of the rollers are exposed out of the upper end of the supporting seat; correspondingly, the lower end face of the seat plate is provided with an annular groove, and the part of the roller exposed out of the upper end of the supporting seat is arranged in the annular groove; preferably, the upper end surface of the supporting seat is provided with a lower locking groove, and correspondingly, the lower end surface of the seat plate is provided with an upper locking groove which is sunken upwards; the seat locking mechanism comprises a locking block with the upper end arranged in the upper locking groove and a return spring arranged between the upper end of the locking block and the top wall of the upper locking groove, the upper end of the locking block is positioned in the upper locking groove of the seat plate, and the lower end of the locking block is positioned in the lower locking groove of the frame supporting seat under the action of the return spring.

10. The stroller of claim 9, wherein the seat back is foldable in a linked manner, and the stroller further comprises: the seat board is also provided with a seat unlocking device for unlocking the seat locking mechanism; preferably, the upper end surface of the seat plate is provided with a through hole communicated with the upper locking groove, the seat unlocking device comprises a third driving piece and a steel wire, the third driving piece can be connected with the seat plate in a relatively front-and-back movement mode, one end of the steel wire is connected with the driving piece, and the other end of the steel wire penetrates through the through hole from top to bottom to be connected with the upper end of the locking block.