CN215154958U - Baby carriage - Google Patents

Abstract

The utility model belongs to the technical field of children's vehicles, and discloses a baby carriage which comprises a frame, a saddle and a push rod rotatably connected with the frame, wherein the saddle is rotatably connected with the frame and at least has more than two working positions for enabling the baby to sit forwards and backwards; the push rod is provided with an elastically telescopic lock pin, and the lock pin can be clamped with the saddle at any working position when in an extending state so as to limit the rotation of the saddle. The utility model provides a bassinet can accomplish the saddle switching-over simply, conveniently to switching-over is taken around being suitable for the baby.

Description

Baby carriage

Technical Field

The utility model relates to a children's carrier technical field especially relates to a bassinet.

Background

The seat reversing function is one of the important functions of a baby carriage (a child stroller, a cradle stroller, etc.), and the seat reversing function can enable a baby to sit on the baby carriage in a forward or backward sitting posture, so that the baby can be prevented from being hurt by sand wind and strong light by reversing sitting in different traveling directions, and meanwhile, the baby carriage can be seated facing to the family of the stroller when the baby is small, thereby being beneficial to obtaining the safety feeling, strengthening parent-child communication, and the like.

The saddle switching-over function generally realizes based on the activity grafting structure of bassinet saddle and automobile body, during the switching-over, pulls out the saddle through the unblock button of pressing the grafting structure of saddle both sides, turns to the saddle and inserts in the automobile body again, needs whole replacement or removal subassemblies such as saddle, handrail and sunshade promptly, consumes physical power, and the less women of not being convenient for strength and elder's operation. Moreover, because the seat is completely lifted away from the vehicle body in the reversing process, the baby needs to be taken out of the seat before reversing to avoid falling, and the baby needs to be taken in the seat again after reversing is finished, so that the whole reversing process is complicated.

Therefore, the above problems need to be solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bassinet, this bassinet can simply, accomplish the saddle switching-over conveniently to switching-over is taken around being suitable for the baby.

To achieve the purpose, the utility model adopts the following technical proposal:

a baby carriage comprises a frame, a seat and a push rod rotatably connected to the frame, wherein the seat is rotatably connected to the frame and at least has more than two working positions for enabling a baby to sit forwards and backwards; the push rod is provided with an elastically telescopic lock pin, and the lock pin can be clamped with the saddle at any working position when in an extending state so as to limit the rotation of the saddle.

Preferably, the stroller further comprises a locking mechanism configured to lock the push rod to limit rotation of the push rod to keep the latch engaged with the seat, and to unlock the push rod to allow the push rod to rotate the latch to retract the latch and release the engagement with the seat.

Preferably, the locking mechanism includes:

the lock tongue is arranged on the push rod;

a lock hole provided in the seat; and

the unlocking assembly is configured to actuate the lock tongue so that the lock tongue extends into the lock hole to limit the push rod to rotate, or the lock tongue moves out of the lock hole to allow the push rod to rotate.

Preferably, the saddle is provided with an L-shaped hole, and the L-shaped hole comprises a first hole section and a second hole section which are communicated with each other at an included angle, wherein:

the first bore section is formed as the locking bore;

the second hole section is in an arc shape coaxial with the rotating shaft of the push rod, so that when the unlocking assembly actuates the lock tongue to move to the first hole section, the push rod can rotate in the extension radian of the second hole section.

Preferably, the latch bolt comprises:

the lock shell is arranged on the push rod in a sliding mode;

the lock rod is fixed on the lock shell and can extend into and move out of the lock hole; and

the first elastic piece is arranged between the push rod and the lock shell so as to ensure that the lock rod keeps extending into the lock hole;

the unlocking assembly can apply external force to the lock shell, so that the lock shell compresses the first elastic piece, and the lock rod moves out of the lock hole.

Preferably, the lock shell is arranged inside the push rod, the lock rod extends out of the push rod, and the push rod is provided with a yielding hole allowing the lock rod to move in and out of the lock hole.

Preferably, the outer wall of the lock shell is inwards concave to form a wedge-shaped groove; the unblock subassembly including slide set up in the unblock piece of push rod, the outer wall of unblock piece is outwards protruding to be established and is formed with the wedge, with the unblock piece orientation when the lock shell removes, the wedge can support and press the cell wall of wedge groove is in order to the lock shell applys external force.

Preferably, the unlocking assembly further comprises:

and the second elastic piece is arranged between the unlocking block and the push rod so that the wedge-shaped block of the unlocking block is kept outside the wedge-shaped groove.

Preferably, the push rod includes:

the first pipe fitting is rotationally connected with the frame;

a second pipe capable of partially extending out of or being accommodated in the first pipe; and

the handle is fixed at one end of the second pipe fitting, which is far away from the second pipe fitting;

when the second pipe fitting is accommodated in the first pipe fitting, the second pipe fitting can be pressed against the unlocking block, so that the external force is applied to the lock shell through the unlocking block.

Preferably, the push rod is provided with a manual locking piece which can enable the second pipe fitting to keep extending out of the first pipe fitting.

The utility model has the advantages that:

because the push rod machine is connected to the frame and the lock pin is arranged on the push rod, after the lock pin is clamped with the seat facing forwards or backwards, the seat, the frame and the push rod can be locked into a whole by the locking mechanism for limiting the rotation of the push rod, so that the whole baby carriage is in a use state, and when the seat needs to be reversed, the lock pin can be released from the clamping with the seat, so that the seat can rotate and reverse relative to the frame. The reversing process does not need to disassemble and move the saddle, the operation is simple, and the female parents or the parents of the elder can easily operate the reversing device.

Drawings

FIG. 1 is a schematic view of a stroller adapted to accommodate a forward facing infant in an embodiment of the present invention;

FIG. 2 is a schematic view of a stroller according to an embodiment of the present invention, adapted for a child to ride backwards;

fig. 3 is a schematic structural view of the vehicle frame and the vehicle seat when the vehicle frame and the vehicle seat are detached in the embodiment of the present invention;

fig. 4 is a schematic structural view of another view angle when the frame and the seat are detached in the embodiment of the present invention;

fig. 5 is a cross-sectional view of the locking mechanism locking the push rod in an embodiment of the invention;

fig. 6 is a cross-sectional view of the locking mechanism in an embodiment of the invention when unlocking the push rod;

fig. 7 is a cross-sectional view of the push rod in an embodiment of the present invention unlocking the seat;

fig. 8 is a schematic view of a matching structure of the lock tongue and the lock hole in the embodiment of the present invention;

fig. 9 is a schematic structural view of a locking mechanism in an embodiment of the invention;

fig. 10 is a schematic view of a fitting structure of the lock tongue and the avoiding hole in the embodiment of the present invention.

In the figure:

1. a frame; 11. a front wheel lever; 12. a rear wheel lever; 13. a support body; 131. buckling; 14. an L-shaped hole; 141. a first bore section; 142. a second bore section; 15. avoiding holes;

2. a vehicle seat; 21. a base body; 22. a carport; 23. a support groove; 231. clamping a plate; 24. a pin hole;

3. a push rod; 31. caulking grooves; 32. a first positioning pin; 33. a second positioning pin; 34. a third positioning pin; 35. a first pipe member; 36. a second pipe member; 37. a handle; 38. a manual locking member;

4. a locking mechanism; 41. a latch bolt; 411. a lock case; 412. a lock lever; 413. a wedge-shaped groove; 414. a second pressure spring; 415. a second bar-shaped hole; 42. an unlocking assembly; 421. unlocking the block; 422. a wedge block; 423. a third strip-shaped hole; 424. a third pressure spring;

5. a lock pin; 51. a pin block; 511. a first bar-shaped hole; 52. a first compression spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 and 2, the present embodiment provides a stroller including a frame 1, a seat 2, a push rod 3, and the like, wherein the stroller has a seat 2 reversing function that can change the installation position of the seat 2 relative to the frame 1 so that the seat 2 can be in a forward facing state shown in fig. 1 and a backward facing state shown in fig. 2, respectively, when a parent pushes the frame 1 through the push rod 3, in order to facilitate the child to sit on the stroller in a forward or backward facing sitting position.

In order to avoid the trouble of disassembling and loading the seat 2 during the above reversing process, as in the prior art, in the present embodiment, the seat 2 can be rotatably connected to the frame 1 by a substantially vertical rotating shaft, so that after rotating around the rotating shaft, the seat 2 can have at least two working positions for seating the baby forward and backward.

As shown in fig. 3 and 4, the frame 1 includes a front wheel rod 11, a rear wheel rod 12, and the like, wherein wheels are disposed at bottom ends of the front wheel rod 11 and the rear wheel rod 12, a disc-shaped supporting body 13 is disposed at a top portion of the frame 1, and a plurality of buckles 131 extending outward are disposed at a circumferential direction of the supporting body 13. The seat 2 includes a seat body 21, a shed 22, a pedal, etc., the bottom of the seat body 21 is correspondingly provided with a supporting groove 23 which can be adapted to fit with the supporting body 13, a circle of clamping plates 231 extending inwards is circumferentially arranged on the notches of the supporting groove 23, when the seat 2 is mounted on the frame 1, the buckles 131 are buckled into the supporting groove 23 and positioned inside the clamping plates 231, thereby being capable of limiting the seat 2 to be separated from the frame 1 and allowing the seat 2 to rotate circumferentially, so that the seat 2 is suitable for being adjusted to a forward state or a backward state.

It can be understood that the buckle 131 at least has a rigid housing and an elastic member such as a compression spring that allows the housing to contract toward the inner side of the supporting seat to avoid the clamping plate 231, so that when the buckling support groove 23 is located inside the clamping plate 231, the elastic member is deformed to restore, so that the housing portion of the buckle 131 rebounds to clamp the clamping plate 231. Furthermore, in the present embodiment, an operating mechanism (not shown) may be added, which can actuate the latch 131, so that the latch 131 can be manually released from the catch plate 231, and the seat 2 can be detachably connected to the frame 1. The above-mentioned operating mechanism is the prior art and is not described herein.

In order to enable the seat 2 to be fixed in any of the above-mentioned working positions, a locking mechanism 4 may be provided between the seat 2 and the frame 1, or between the seat 2 and the push rod 3, the locking mechanism 4 being intended to enable the seat 2 in any of the working positions to be fixed to the frame 1 or the push rod 3, thereby ensuring that the seat 2 does not rotate accidentally.

Referring to fig. 3 to 10, in the present embodiment, the push rod 3 is rotatably connected to the frame 1, the push rod 3 is provided with the elastically retractable lock pin 5, and the lock pin 5 can be engaged with the seat 2 at any working position when in an extended state to limit the rotation of the seat 2; the lock mechanism 4 is configured to lock the push rod 3 to restrict the push rod 3 from rotating, so that the latch 5 is kept engaged with the seat 2, and the lock mechanism 4 is further configured to unlock the push rod 3 to allow the push rod 3 to rotate the latch 5, so that the latch 5 is retracted and disengaged from the seat 2.

Referring to fig. 5 and 7, since the push rod 3 is connected to the frame 1 and the latch 5 is disposed on the push rod 3, after the latch 5 is engaged with the seat 2 facing forward or backward, the seat 2, the frame 1 and the push rod 3 can be locked by the lock mechanism 4 for limiting the rotation of the push rod 3, so that the entire stroller is in the use state shown in fig. 5, and when the seat 2 needs to be reversed, the push rod 3 can be unlocked by the unlock mechanism, and the parent can rotate the push rod 3 to drive the latch 5 to move toward the outside of the seat 2, so that the latch 5 is pushed and retracted by the rigid structure of the seat 2 to release the engagement with the seat 2, and at this time, the seat 2 can be rotated and reversed relative to the frame 1. The reversing process does not need to disassemble and move the saddle 2, the operation is simple, and by means of the push rod 3 structure with a long arm of force, a female or a parent of a long person can easily rotate the push rod 3 to release the clamping between the lock pin 5 and the saddle 2.

Referring to fig. 4, in the present embodiment, in order to obtain the working position, the bottom of the seat 2, at least the rear side and the front side, are provided with pin holes 24 capable of engaging with the lock pins 5, so as to be locked by the lock pins 5 when the seat 2 is in the forward state and the backward state, respectively.

As shown in fig. 5 and 8, the push rod 3 is provided with a recessed groove 31 recessed inward from an outer wall thereof near a connection portion with the seat 2, the lock pin 5 may include a pin block 51 inserted into the recessed groove 31, a first strip hole 511 parallel to an opening direction of the recessed groove 31 is provided in a middle portion of the pin block 51, the pin block 51 is inserted into the first positioning pin 32 provided in the recessed groove 31 through the first strip hole 511, so as to allow the pin block 51 to move in the opening direction of the recessed groove 31, the lock pin 5 further includes a first compression spring 52, and the first compression spring 52 abuts between a bottom surface of the pin block 51 and a groove bottom of the recessed groove 31, so that the pin block 51 is held to extend out of the recessed groove 31 and is engaged with the pin hole 24.

After the unlocking mechanism unlocks the push rod 3, as the lock pin 5 is still positioned in the pin hole 24, when the push rod 3 is rotated to the lower part of fig. 5 and 8, the lock pin 5 is driven to rotate around the clockwise direction of fig. 5 and 8, so that the pin block 51 is reversely extruded by the hole wall structure of the pin hole 24, the pin block 51 is retracted into the caulking groove 31 to release the clamping with the pin hole 24 by overcoming the elastic force of the first pressure spring 52, and at the moment, the vehicle seat 2 can rotate and change direction relative to the vehicle frame 1.

In the present embodiment, the lock mechanism 4 includes a latch tongue 41, a lock hole, and an unlock member 42. Wherein the lock tongue 41 is arranged on the push rod 3; the lock hole is arranged on the seat 2; the unlocking assembly 42 is configured to actuate the latch 41 such that the latch 41 is in the position shown in fig. 5 to extend into the lock hole to restrict the rotation of the push rod 3, or the latch 41 is in the position shown in fig. 6 to move out of the lock hole to allow the rotation of the push rod 3.

Referring to fig. 8 to 10 for describing the locking mechanism 4 in detail, referring to fig. 8, firstly, an L-shaped hole 14 is formed on the seat 2, the L-shaped hole 14 includes a first hole section 141 and a second hole section 142 which are communicated with each other at an included angle, wherein the first hole section 141 is formed as the above-mentioned lock hole; the second hole section 142 is in an arc shape coaxial with the rotation axis of the push rod 3, so that when the unlocking assembly 42 actuates the latch 41 to move to the first hole section 141, the push rod 3 can rotate within an extension arc of the second hole section 142, preferably, when the latch 41 moves to the end of the second hole section 142, i.e., the end far away from the first hole section 141, the push rod 3 is correspondingly at the lowest rotation position, which is to prevent the pin block 51 of the lock pin 5 from being disengaged from the reverse pressing of the seat 2, so as to prevent the pin block 51 from being ejected out of the caulking groove 31 by the first compression spring 52, thereby facilitating the lock pin 5 to be smoothly re-clamped in the pin hole 24 when the push rod 3 is reset.

Referring to fig. 9 and 10, in the present embodiment, the latch 41 includes a lock housing 411, a lock rod 412 and a first elastic member (e.g., a compression spring, hereinafter referred to as a second compression spring 414). The lock shell 411 is arranged on the push rod 3 in a sliding way; the locking rod 412 is fixed on the lock case 411, and the locking rod 412 can extend into and move out of the first hole section 141; the first elastic element is disposed between the push rod 3 and the lock housing 411, so that the lock rod 412 is kept extending into the first hole section 141; the unlocking assembly 42 is capable of applying an external force to the lock housing 411 to cause the lock housing 411 to compress the second compression spring 414 and move the lock bar 412 out of the first bore section 141, thereby releasing the push rod 3 from the locking relationship with the frame 1. As shown in fig. 10, the lock case 411 is preferably disposed inside the push rod 3, the lock rod 412 extends out of the push rod 3, and accordingly, the push rod 3 is provided with an avoiding hole 15 allowing the lock rod 412 to move into and out of the first hole section 141, and meanwhile, to limit the moving range of the lock case 411, the lock case 411 may be sleeved on a second positioning pin 33 by a second strip-shaped hole 415 in the middle of the lock case 411, the second positioning pin 33 is fixed on the frame 1 and may serve as a rotating shaft of the push rod 3, and the second pressure spring 414 may abut between the lock case 411 and the second positioning pin 33.

Alternatively, in order to actuate the lock housing 411 to drive the lock rod 412 to move out of the first hole section 141, as shown in fig. 10, the outer wall of the lock housing 411 may be recessed inward to form a wedge-shaped groove 413; the unlocking assembly 42 comprises an unlocking block 421 slidably arranged on the push rod 3, a wedge block 422 is formed on the outer wall of the unlocking block 421 in an outward protruding mode, when the unlocking block 421 moves towards the lock shell 411, the wedge block 422 can press against the groove wall of the wedge groove 413 to apply external force to the lock shell 411, in order to avoid the wedge block 422, the locking block moves downwards and compresses the second pressure spring 414, so that the lock rod 412 can move to the second hole section 142 from the first hole section 141 after moving along with the lock shell 411, the position of the unlocking block 421 is maintained at the moment, the push rod 3 can be rotated, and the lock pin 5 moves out of the pin hole 24 to change the direction of the vehicle seat 2.

After the reversing is finished, the push rod 3 is reset, the external force applied to the lock shell 411 by the unlocking block 421 is cancelled, the lock shell 411 drives the lock pin 5 to be clamped into the first hole section 141 again under the restoring elasticity of the second pressure spring 414, and the push rod 3, the frame 1 and the saddle 2 are fixed into a whole again.

It is understood that in the present embodiment, the action of the unlocking block 421 is performed by human power, for example, the unlocking block 421 may include a portion exposed outside the push rod 3, so as to be suitable for a parent to drive the unlocking block 421 to act by pushing, pulling, pressing, etc. to apply the above-mentioned external force for unlocking the push rod 3 to the lock housing 411.

Further, as shown in fig. 10, to limit the moving range of the unlocking block 421, the unlocking block 421 can be sleeved on a third positioning pin 34 by a third strip-shaped hole 423 in the middle of the unlocking block, and the third positioning pin 34 is fixed on the frame 1. The unlocking assembly 42 may further include a second elastic member (e.g., a compression spring, hereinafter referred to as a third compression spring 424), the third compression spring 424 may abut between the unlocking block 421 and the third positioning pin 34, the third compression spring 424 is configured to keep a portion of the wedge 422 of the unlocking block 421 located outside the wedge groove 413, that is, when no external force is applied, the third compression spring 424 maintains a stretched state, at this time, the wedge 422 is located outside the wedge groove, and when the unlocking block 421 is pushed toward the lock housing 411 by an external force applied manually to unlock the push rod 3, the third compression spring 424 will be compressed to store energy, and when the external force is removed, the restoring elastic force of the third compression spring 424 will restore the unlocking block 421.

Preferably, the application of the external force in the embodiment can be achieved by a telescopic storage structure of the push rod 3, as shown in fig. 6 and 7, the push rod 3 comprises a first pipe 35, a second pipe 36 and a handle 37, the first pipe 35 is rotatably connected with the frame 1; the second tube 36 can be partially extended or received in the first tube 35; the handle 37 is fixed to the end of the second tube 36 away from the second tube 36; when the second tube 36 is received in the first tube 35, the unlocking block 421 can be pressed to apply an external force to the lock case 411 through the unlocking block 421.

As shown in fig. 7 and 10, in order to adapt to the shape of the first tube 35, in this embodiment, the number of the unlocking blocks 421 may be two or more, and the unlocking blocks 421 are connected end to transmit the abutting force of the second tube 36 to each other, so that the abutting force is transmitted to the lock housing 411 to form the above-mentioned "external force" for unlocking the push rod 3.

To avoid accidental unlocking of the locking mechanism 4, the push rod 3 may be provided with a manual locking member 38 that keeps the second tubular member 36 protruding from the first tubular member 35. When the keeper needs to store the second tube 36 in the first tube 35 to push the stroller, in order to prevent the locking mechanism 4 from being unlocked accidentally, a limiting member capable of limiting the storage degree of the second tube 36 may be further disposed on the push rod 3, that is, the second tube 36 cannot be completely stored in the pushing unlocking block 421 under the stop of the limiting member; alternatively, under the stopping of the limiting member, the second tube 36 cannot be pushed into the first tube 35 to push against the unlocking block 421 after being located at the predetermined receiving position. The manual locking element 38 connected to the limiting element can be a limiting buckle 131 and a related unlocking mechanism, which are commonly used in the drawbar of a stroller and the drawbar of a trunk, and are not described herein.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A kind of bassinet, including frame (1), saddle (2) and rotate and connect to the push rod (3) of the said frame (1), characterized by that:

the seat (2) is rotatably connected with the frame (1) and at least has more than two working positions for seating the baby forwards and backwards;

the push rod (3) is provided with an elastically telescopic lock pin (5), and the lock pin (5) can be clamped with the saddle (2) in any working position when in an extending state so as to limit the rotation of the saddle (2).

2. A stroller according to claim 1, further comprising a locking mechanism (4), wherein the locking mechanism (4) is configured to lock the push rod (3) to restrict the push rod (3) from rotating, such that the latch (5) remains engaged with the seat (2), and wherein the locking mechanism (4) is further configured to unlock the push rod (3) to allow the push rod (3) to rotate the latch (5), such that the latch (5) retracts and disengages from the seat (2).

3. A stroller according to claim 2, characterized in that the locking mechanism (4) comprises:

a latch (41) provided to the push rod (3);

a lock hole provided in the seat (2); and

an unlocking assembly (42) configured to actuate the latch tongue (41) to extend the latch tongue (41) into the lock hole to limit rotation of the push rod (3) or to move the latch tongue (41) out of the lock hole to allow rotation of the push rod (3).

4. A stroller according to claim 3, wherein the seat (2) is provided with an L-shaped aperture (14), the L-shaped aperture (14) comprising a first aperture section (141) and a second aperture section (142) in angular communication, wherein:

the first bore section (141) is formed as the locking bore;

the second hole section (142) is in an arc shape coaxial with the rotating shaft of the push rod (3), so that when the unlocking assembly (42) actuates the lock tongue (41) to move to the first hole section (141), the push rod (3) can rotate in the extension radian of the second hole section (142).

5. A stroller according to claim 3, characterized in that the latch (41) comprises:

a lock case (411) slidably disposed on the push rod (3);

the lock rod (412) is fixed on the lock shell (411), and the lock rod (412) can extend into and move out of the lock hole; and

the first elastic piece is arranged between the push rod (3) and the lock shell (411) so as to enable the lock rod (412) to keep extending into the lock hole;

the unlocking assembly (42) can apply external force to the lock shell (411) so that the lock shell (411) compresses the first elastic piece to enable the lock rod (412) to move out of the lock hole.

6. A stroller according to claim 5, wherein the lock housing (411) is arranged inside the push rod (3), the lock rod (412) extends out of the push rod (3), and the push rod (3) is provided with a relief hole (15) allowing the lock rod (412) to move in and out of the lock hole.

7. A stroller according to claim 5, wherein:

the outer wall of the lock shell (411) is inwards concavely provided with a wedge-shaped groove (413);

unblock subassembly (42) including slide set up in unblock piece (421) of push rod (3), the outer wall of unblock piece (421) is outwards protruding to be established and is formed with wedge (422), with unblock piece (421) orientation when lock shell (411) remove, wedge (422) can support and press the cell wall of wedge groove (413) is in order to lock shell (411) applys external force.

8. The stroller of claim 7, wherein the unlocking assembly (42) further comprises:

and the second elastic piece is arranged between the unlocking block (421) and the push rod (3) so as to enable the wedge-shaped block (422) of the unlocking block (421) to be positioned outside the wedge-shaped groove (413).

9. A buggy according to claim 7, characterized in that the push rod (3) comprises:

a first pipe (35) rotatably connected to the frame (1);

a second tube (36) that can be partially extended or housed in the first tube (35); and

a handle (37) fixed to an end of the second tube member (36) remote from the second tube member (36);

when the second pipe fitting (36) is received in the first pipe fitting (35), the unlocking block (421) can be pressed, so that the external force is applied to the lock shell (411) through the unlocking block (421).

10. A stroller according to claim 9, characterized in that the push rod (3) is provided with a manual locking member (38) which keeps the second tubular member (36) protruding from the first tubular member (35).

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