Handlebar group and baby stroller

Abstract

The utility model relates to the technical field of baby strollers, and discloses a handle group and a baby stroller, the handle group has an unfolded state and a folded state, the handle group comprises an upper handle group, a lower handle group and a locking mechanism, and the upper handle group is rotatably connected with the lower handle group; wherein the locking mechanism comprises a first locking piece, a second locking piece, a pushing piece and an unlocking piece, a locking groove is formed in the lower handle set, the first locking piece, the second locking piece and the pushing piece are movably arranged on the upper handle set, and the first locking piece and the second locking piece can be locked into the locking groove so as to lock the upper handle set and the lower handle set; the abutting and pushing piece movably abuts against the first locking piece and the second locking piece, and the abutting and pushing piece can drive the first locking piece and the second locking piece to be separated from the locking groove to unlock the handle set. The unlocking piece is arranged on the upper handle set and can drive the abutting and pushing piece. The handrail assembly has the advantages that the locking mechanism of the handrail assembly is simple in structure, good in locking stability and convenient to unlock.

Description

Technical Field

[0001] The utility model relates to the technical field of child strollers, in particular to a handlebar set and a child stroller. Background Art

[0002] A child stroller is a common tool for taking children out. In order to facilitate carrying and storage, the child stroller is set to be foldable. During normal use, the child stroller is in an unfolded state; when it is not needed, the child stroller is folded, which can effectively reduce the space it occupies.

[0003] The handlebar group is arranged on the frame of the child stroller. During use, the adult holds the handlebar group to push or pull the stroller. In a foldable child stroller, the handlebar group is generally arranged into an upper handlebar group and a lower handlebar group. When the child stroller is in an unfolded state, the upper handlebar group and the lower handlebar group are also in an unfolded state. When the child stroller is folded, the upper handlebar group and the lower handlebar group are also folded and the two are close to each other. A locking mechanism is provided between the upper handlebar group and the lower handlebar group to ensure that the handlebar group will not be accidentally folded during the unfolded use of the child stroller. However, the existing handlebar locking mechanism has a complex structure and poor locking stability. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a handlebar assembly and a child stroller with simple structure, good locking stability and convenient unlocking.

[0005] The utility model solves the technical problem by adopting a technical solution of providing a handlebar assembly, which is arranged on a child stroller and has an unfolded state and a folded state. When the handlebar assembly is unlocked, it can be switched between the unfolded state and the folded state. The handlebar assembly includes:

[0006] An upper handle group, a lower handle group and a locking mechanism, wherein the upper handle group and the lower handle group are rotatably connected; wherein:

[0007] The locking mechanism comprises a first locking member, a second locking member, a push member and an unlocking member, the lower handle assembly is provided with a locking groove, the first locking member, the second locking member and the push member are movably arranged on the upper handle assembly, and the first locking member and the second locking member can be locked into the locking groove to lock both the upper handle assembly and the lower handle assembly;

[0008] The push member movably resists against the first locking member and the second locking member, and the push member can drive the first locking member and the second locking member to disengage from the locking groove to unlock the handle assembly;

[0009] The unlocking member is arranged on the upper handle assembly, and can drive the pushing member.

[0010] Furthermore, the push member is rotatably arranged on the upper handle assembly, and the push member is provided with a first inclined wall and a second inclined wall respectively;

[0011] The first locking member and the second locking member are respectively provided with a third inclined wall and a fourth inclined wall, and the pushing member can respectively push the third inclined wall and the fourth inclined wall through the first inclined wall and the second inclined wall to disengage the first locking member and the second locking member from the locking groove.

[0012] Further, a first tensioning spring is provided between the first locking member and the upper handle assembly, and a second tensioning spring is provided between the second locking member and the upper handle assembly;

[0013] The first inclined wall movably abuts against the third inclined wall, and the second inclined wall movably abuts against the fourth inclined wall; when the pushing member rotates to push the first locking member and the second locking member so that the first locking member and the second locking member are disengaged from the locking groove, the first tensioning spring and the second tensioning spring are compressed.

[0014] Further, the lock slot includes a first lock slot and a second lock slot;

[0015] When the handle assembly is in the unfolded state, the first locking member can be locked into the first locking groove, and the second locking member can be locked into the second locking groove, so as to lock both the upper handle assembly and the lower handle assembly;

[0016] When the handle assembly is in the folded state, the first locking member can be locked into the second locking groove, and the second locking member can be locked into the first locking groove, so as to lock both the upper handle assembly and the lower handle assembly.

[0017] Furthermore, a convex column is protruded from the upper handle assembly, a circular hole is provided on the push member, and the convex column is inserted into the circular hole;

[0018] The push member is provided with two first push blocks and second push blocks which are centrally symmetrical in the circumferential direction, the first inclined wall is arranged on the first push block, and the second inclined wall is arranged on the second push block;

[0019] The first locking member and the second locking member are centrally symmetrically arranged.

[0020] Furthermore, a receiving groove is provided on the upper handle assembly, and the first locking member and the second locking member are both movably arranged in the receiving groove;

[0021] When the push member drives the first locking member and the second locking member to disengage from the locking groove, the first locking member and the second locking member are both retracted and accommodated in the accommodating groove.

[0022] Furthermore, a limiting protrusion is provided on the upper handle assembly, a limiting groove is provided on the push member, the limiting protrusion is located in the limiting groove, and the width of the limiting groove is greater than the width of the limiting protrusion;

[0023] When the first locking member and the second locking member lock the handle assembly, one side surface of the limiting protrusion abuts against one side surface of the limiting groove;

[0024] When the push member rotates to the other side of the limiting groove and abuts against the other side of the limiting protrusion, the push member drives the first locking member and the second locking member to disengage from the locking groove, thereby unlocking the handle assembly.

[0025] Furthermore, the unlocking member and the resisting member are connected via a pull wire; when the unlocking member is pressed, the unlocking member pulls the resisting member via the pull wire to cause the resisting member to rotate.

[0026] The utility model solves the technical problem by adopting a technical solution, and also proposes a baby stroller, comprising:

[0027] A front wheel assembly, a rear wheel assembly, the above-mentioned handlebar assembly, an upper connecting rod and a lower connecting rod; wherein:

[0028] The front wheel group, the rear wheel group and the lower handlebar group are rotatably connected; one end of the upper connecting rod is rotatably connected to the upper handlebar group, and the other end of the upper connecting rod is rotatably connected to the lower connecting rod; the lower connecting rod is rotatably connected to the front wheel group;

[0029] When the unlocking member drives the locking mechanism to unlock, the child stroller can be folded.

[0030] Furthermore, when the stroller is folded: the upper handlebar group rotates downward and drives the upper connecting rod to rotate, the upper connecting rod drives the lower connecting rod to rotate, the lower connecting rod drives the front wheel group to rotate, and the upper handlebar group, the lower handlebar group, the upper connecting rod, the lower connecting rod and the front wheel group all move closer to the rear wheel group.

[0031] Compared with the prior art, the utility model has at least the following beneficial effects:

[0032] In the utility model, the upper handle group and the lower handle group are rotatably connected, and the first locking member and the second locking member are movably arranged on the upper handle group and can be locked into the locking groove on the lower handle group to lock both the upper handle group and the lower handle group (i.e., the handle group). When it is necessary to release the lock, the unlocking member is pressed so that the unlocking member drives the push member, and the push member drives the first locking member and the second locking member to disengage from the locking groove to release the lock on the handle group. The structure of the entire locking mechanism is simple, and the unlocking operation is convenient, and the locking stability is good. In addition, the first locking member and the second locking member can be locked into the first locking groove and the second locking groove, respectively, or locked into the second locking groove and the first locking groove, respectively, to ensure that the handle group can be locked by the locking mechanism regardless of whether it is in the unfolded state or the folded state, and the structural stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the child stroller of the utility model when it is in an unfolded state;

[0034] Figure 2 for Figure 1 Side view of

[0035] Figure 3 for Figure 2 A schematic diagram of the structure of the stroller during folding;

[0036] Figure 4 for Figure 3 A schematic diagram of the structure of the middle child stroller after further folding;

[0037] Figure 5 This is a schematic diagram of the structure of the child stroller after it is folded;

[0038] Figure 6 It is an exploded schematic diagram of the locking mechanism at the upper handlebar assembly and the lower handlebar assembly;

[0039] Figure 7 It is an exploded schematic diagram of the first locking member, the second locking member and the push member;

[0040] Figure 8 It is a cross-sectional view when the locking mechanism locks the upper handlebar assembly and the lower handlebar assembly;

[0041] Fig. 9 for Figure 8 Schematic diagram of the middle locking mechanism after unlocking;

[0042] Fig.10 It is a cross-sectional view along another direction when the locking mechanism locks the upper handle assembly and the lower handle assembly;

[0043] Fig.11 for Fig.10 Schematic diagram of the middle locking mechanism after unlocking.

[0044] In the figure:

[0045] 1. upper handle assembly; 10. boss; 11. receiving groove; 12. limiting protrusion;

[0046] 2. lower handle assembly; 20. locking slot; 20A. first locking slot; 20B. second locking slot;

[0047] 3. Locking mechanism; 31. First locking member; 310. Third oblique wall; 32. Second locking member; 320. Fourth oblique wall; 33. Pushing member; 331. First oblique wall; 332. Second oblique wall; 333. Round hole; 334. Limiting groove; 34. Unlocking member; 35. First tensioning spring; 36. Second tensioning spring; 37. Pull wire;

[0048] 4. Front wheel set;

[0049] 5. Rear wheel set;

[0050] 6. Upper connecting rod;

[0051] 7. Lower connecting rod;

[0052] 8. Handrail group;

[0053] 9. Seat. DETAILED DESCRIPTION

[0054] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0055] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0059] Embodiment 1:

[0060] like Figure 1 as well as Figure 6-Figure 11 As shown, a handlebar assembly is arranged on a child stroller and has an unfolded state and a folded state. When the handlebar assembly is unlocked, the handlebar assembly can be switched between the unfolded state and the folded state. During normal use, the handlebar assembly is in the unfolded state, and when not in use, the handlebar assembly can be folded.

[0061] The handlebar assembly of this embodiment mainly includes: an upper handlebar assembly 1, a lower handlebar assembly 2 and a locking mechanism 3. The upper handlebar assembly 1 and the lower handlebar assembly 2 are rotatably connected; the locking mechanism 3 can lock the upper handlebar assembly 1 and the lower handlebar assembly 2.

[0062] The locking mechanism 3 includes a first locking member 31, a second locking member 32, a push member 33, an unlocking member 34, a first tensioning spring 35, a second tensioning spring 36 and a pull wire 37. The lower handle assembly 2 is provided with a lock slot 20 for the first locking member 31 and the second locking member 32 to be locked in. The first locking member 31, the second locking member 32 and the push member 33 are movably arranged on the upper handle assembly 1, and the first locking member 31 and the second locking member 32 can be locked in the lock slot 20 to lock both the upper handle assembly 1 and the lower handle assembly 2. The push member 33 movably resists the first locking member 31 and the second locking member 32, and the push member 33 can drive the first locking member 31 and the second locking member 32 to disengage from the lock slot 20 to unlock the handle assembly. The unlocking member 34 is arranged on the upper handlebar assembly 1, which can drive the pushing member 33. The unlocking member 34 is an unlocking button. One end of the pull wire 37 is connected to the unlocking member 34, and the other end of the pull wire 37 is connected to the pushing member 33. The operator presses or pinches the unlocking member 34, and the unlocking member 34 drives the pushing member 33 through the pull wire 37. The pushing member 33 pushes the first locking member 31 and the second locking member 32 to disengage from the lock groove 20, thereby releasing the lock on the handlebar assembly.

[0063] A first tension spring 35 is provided between the first locking member 31 and the upper handle assembly 1, and the elastic force of the first tension spring 35 makes the first locking member 31 have a tendency to keep moving toward the lock slot 20. A second tension spring 36 is provided between the second locking member 32 and the upper handle assembly 1, and the elastic force of the second tension spring 36 makes the second locking member 32 have a tendency to keep moving toward the lock slot 20. The first tension spring 35 and the second tension spring 36 can ensure that the first locking member 31 and the second locking member 32 are locked reliably when the handle assembly is locked, and both will not be separated from the lock slot 20, thereby ensuring locking stability. In addition, during the unlocking process of the locking mechanism 3, the first tension spring 35 and the second tension spring 36 are compressed by the first locking member 31 and the second locking member 32, respectively.

[0064] Specifically, the push member 33 is rotatably arranged on the upper handle assembly 1, a boss 10 is protruded on the upper handle assembly 1, a round hole 333 is arranged on the push member 33, and the boss 10 is inserted into the round hole 333, so that the push member 33 can rotate relative to the boss 10. The push member 33 is respectively provided with a first inclined wall 331 and a second inclined wall 332. Specifically, the push member 33 is provided with two first and second push blocks that are centrally symmetrical in the circumferential direction, the first inclined wall 331 is arranged on the first push block, and the second inclined wall 332 is arranged on the second push block.

[0065] The first locking member 31 and the second locking member 32 are also centrally symmetrically arranged, and the third inclined wall 310 and the fourth inclined wall 320 are respectively arranged on the first locking member 31 and the second locking member 32, and the first inclined wall 331 and the third inclined wall 310 are movably abutted against each other, and the second inclined wall 332 and the fourth inclined wall 320 are movably abutted against each other. During use, the push member 33 can push the third inclined wall 310 and the fourth inclined wall 320 respectively through the first inclined wall 331 and the second inclined wall 332, so that the first locking member 31 and the second locking member 32 are disengaged from the locking groove 20, so that the first locking member 31 and the second locking member 32 release the lock on the handlebar assembly.

[0066] In actual use, the upper handlebar assembly 1 and the lower handlebar assembly 2 of this embodiment are rotatably connected, and the first locking member 31 and the second locking member 32 are movably arranged on the upper handlebar assembly 1 and can be locked into the locking groove 20 on the lower handlebar assembly 2 to lock both the upper handlebar assembly 1 and the lower handlebar assembly 2 (i.e., the handlebar assembly). When it is necessary to release the lock, the unlocking member 34 is pressed, so that the unlocking member 34 drives the push member 33, and the push member 33 drives the first locking member 31 and the second locking member 32 to disengage from the locking groove 20, thereby releasing the lock on the handlebar assembly. The entire locking mechanism 3 has a simple structure, and the unlocking operation is convenient, and the locking stability is good.

[0067] More specifically, the lock slot 20 of the present embodiment includes a first lock slot 20A and a second lock slot 20B, and the first lock slot 20A and the second lock slot 20B are also centrally symmetrically arranged. When the handle assembly is in the unfolded state, the first locking member 31 can be locked into the first lock slot 20A, and the second locking member 32 can be locked into the second lock slot 20B, so that both the upper handle assembly 1 and the lower handle assembly 2 are locked, that is, the locking mechanism 3 locks the handle assembly in the unfolded state to prevent accidental unfolding. When the handle assembly is in the folded state, the first locking member 31 can be locked into the second lock slot 20B, and the second locking member 32 can be locked into the first lock slot 20A, so that both the upper handle assembly 1 and the lower handle assembly 2 are locked, that is, the handle assembly is locked in the folded state to prevent accidental folding. During the switching process between the unfolded state and the folded state of the handle assembly, the relative rotation angle between the upper handle assembly 1 and the lower handle assembly 2 is approximately 180 degrees.

[0068] During actual use, in the locking mechanism 3 of this embodiment, the first locking member 31 and the second locking member 32 can be locked into the first locking groove 20A and the second locking groove 20B respectively, or locked into the second locking groove 20B and the first locking groove 20A respectively, ensuring that the handle group can be locked by the locking mechanism 3 regardless of whether it is in the unfolded state or the folded state, and the structural stability is good.

[0069] Preferably, the upper handle assembly 1 is provided with a receiving groove 11, and the first locking member 31 and the second locking member 32 are both movably disposed in the receiving groove 11. When the handle assembly is locked, one end of the first locking member 31 and the second locking member 32 respectively extend from the receiving groove 11 and extend into the locking groove 20. When the push member 33 drives the first locking member 31 and the second locking member 32 to disengage from the locking groove 20, the first locking member 31 and the second locking member 32 are both retracted and accommodated in the receiving groove 11.

[0070] Preferably, a limiting protrusion 12 is provided on the upper handle assembly 1, and a limiting groove 334 is provided on the push member 33. The limiting protrusion 12 is in the limiting groove 334, and the width of the limiting groove 334 is greater than the width of the limiting protrusion 12. When the first locking member 31 and the second locking member 32 lock the handle assembly, one side of the limiting protrusion 12 abuts against one side of the limiting groove 334. When the push member 33 rotates until the other side of the limiting groove 334 abuts against the other side of the limiting protrusion 12, the push member 33 drives the first locking member 31 and the second locking member 32 to disengage from the locking groove 20, so that the handle assembly is unlocked. That is, through the cooperation between the limiting protrusion 12 and the limiting groove 334, the position of the push member 33 is limited, and the two extreme positions of the push member 33 are determined, so as to ensure that the push member 33 does not rotate excessively.

[0071] During normal use, the handle assembly is in the unfolded state. Under the action of the first tensioning spring 35 and the second tensioning spring 36, the first locking member 31 is locked into the first locking groove 20A, and the second locking member 32 is locked into the second locking groove 20B, locking the handle assembly in the unfolded state, and the upper handle assembly 1 and the lower handle assembly 2 cannot rotate relative to each other. When the handle assembly needs to be folded, the operator presses or pinches the unlocking member 34, and the unlocking member 34 pulls the pushing member 33 through the pull wire 37. The pushing member 33 rotates relative to the boss 10, and the pushing member 33 pushes the third inclined wall 310 through the first inclined wall 331, and pushes the fourth inclined wall 320 through the second inclined wall 332, so that the first locking member 31 and the second locking member 32 both retract toward the side of the accommodating groove 11, and disengage from the first locking groove 20A and the second locking groove 20B respectively, and the handle assembly is unlocked. At this time, the upper handle assembly 1 and the lower handle assembly 2 can rotate relative to each other to fold the handle assembly. When the handle assembly is switched to the folded state, the first locking member 31 is locked into the second locking groove 20B under the action of the first spring, and the second locking member 32 is locked into the first locking groove 20A under the action of the second tensioning spring 36, locking the handle assembly in the folded state, and the upper handle assembly 1 and the lower handle assembly 2 cannot rotate relative to each other. In addition, the first locking member 31 and the second locking member 32 will push the pushing member 33 in the opposite direction, so that the pushing member 33 rotates in the opposite direction and returns to the initial position.

[0072] Embodiment 2:

[0073] like Figure 1-Figure 6As shown, a child stroller mainly comprises:

[0074] The front wheel group 4, the rear wheel group 5, the handlebar group, the upper connecting rod 6 and the lower connecting rod 7 as in the first embodiment; wherein: the front wheel group 4, the rear wheel group 5 and the lower handlebar group 2 are rotatably connected; one end of the upper connecting rod 6 is rotatably connected to the upper handlebar group 1, and the other end of the upper connecting rod 6 is rotatably connected to the lower connecting rod 7; the lower connecting rod 7 is rotatably connected to the front wheel group 4.

[0075] When the unlocking member 34 drives the locking mechanism 3 to unlock, the stroller can be folded. When folding the stroller: the upper handlebar assembly 1 rotates downward and drives the upper connecting rod 6 to rotate, the upper connecting rod 6 drives the lower connecting rod 7 to rotate, the lower connecting rod 7 drives the front wheel assembly 4 to rotate, and the upper handlebar assembly 1, the lower handlebar assembly 2, the upper connecting rod 6, the lower connecting rod 7 and the front wheel assembly 4 all move closer to the rear wheel assembly 5.

[0076] Specifically, the child stroller further comprises an armrest group 8 and a seat 9 for a child to sit on. During the process of folding the child stroller, the armrest group 8 and the seat 9 can also be folded along with the stroller frame.

[0077] like Figure 1-Figure 5 As shown, when the stroller needs to be folded, the operator presses or squeezes the unlocking member 34 to unlock the handlebar assembly (see the unlocking process in the first embodiment); the upper handlebar assembly 1 rotates counterclockwise relative to the lower handlebar assembly 2, the upper handlebar assembly 1 drives the upper connecting rod 6 to rotate clockwise, the upper connecting rod 6 drives the lower connecting rod 7 to rotate counterclockwise, and the lower connecting rod 7 drives the front wheel assembly 4 to move closer to the rear wheel assembly 5; the lower handlebar assembly 2, the seat 9 and the armrest assembly 8 rotate along their respective rotation centers until the stroller is folded to the position shown in the figure. Figure 5 The state shown is that the folding is complete. The process of unfolding the stroller is the opposite of the folding process, which will not be described in detail.

[0078] In this embodiment, the child stroller can be folded with one button, and the folding and unfolding processes are convenient, and the child stroller has high stability in the folded state and the unfolded state.

Claims

1. A handlebar assembly, arranged on a child stroller, having an unfolded state and a folded state, and when the handlebar assembly is unlocked, it can switch between the unfolded state and the folded state, characterized in that: The handlebar assembly comprises: An upper handle group, a lower handle group and a locking mechanism, wherein the upper handle group and the lower handle group are rotatably connected; wherein: The locking mechanism comprises a first locking member, a second locking member, a push member and an unlocking member, the lower handle assembly is provided with a locking groove, the first locking member, the second locking member and the push member are movably arranged on the upper handle assembly, and the first locking member and the second locking member can be locked into the locking groove to lock both the upper handle assembly and the lower handle assembly; The push member movably resists against the first locking member and the second locking member, and the push member can drive the first locking member and the second locking member to disengage from the locking groove to unlock the handle assembly; The unlocking member is arranged on the upper handle assembly, and can drive the pushing member.

2. The handle assembly according to claim 1, characterized in that: The push member is rotatably arranged on the upper handle assembly, and the push member is provided with a first inclined wall and a second inclined wall respectively; The first locking member and the second locking member are respectively provided with a third inclined wall and a fourth inclined wall, and the pushing member can respectively push the third inclined wall and the fourth inclined wall through the first inclined wall and the second inclined wall to disengage the first locking member and the second locking member from the locking groove.

3. The handle assembly according to claim 2, characterized in that: A first tensioning spring is provided between the first locking member and the upper handle assembly, and a second tensioning spring is provided between the second locking member and the upper handle assembly; The first inclined wall movably abuts against the third inclined wall, and the second inclined wall movably abuts against the fourth inclined wall; when the pushing member rotates to push the first locking member and the second locking member so that the first locking member and the second locking member are disengaged from the locking groove, the first tensioning spring and the second tensioning spring are compressed.

4. The handle assembly according to any one of claims 1 to 3, characterized in that: The lock slot includes a first lock slot and a second lock slot; When the handle assembly is in the unfolded state, the first locking member can be locked into the first locking groove, and the second locking member can be locked into the second locking groove, so as to lock both the upper handle assembly and the lower handle assembly; When the handle assembly is in the folded state, the first locking member can be locked into the second locking groove, and the second locking member can be locked into the first locking groove, so as to lock both the upper handle assembly and the lower handle assembly.

5. The handle assembly according to claim 2 or 3, characterized in that: A convex column is protruded from the upper handle assembly, a circular hole is provided on the push member, and the convex column is inserted into the circular hole; The push member is provided with two first push blocks and second push blocks which are centrally symmetrical in the circumferential direction, the first inclined wall is arranged on the first push block, and the second inclined wall is arranged on the second push block; The first locking member and the second locking member are centrally symmetrically arranged.

6. The handle assembly according to claim 1, characterized in that: The upper handle assembly is provided with a receiving groove, and the first locking member and the second locking member are both movably arranged in the receiving groove; When the push member drives the first locking member and the second locking member to disengage from the locking groove, the first locking member and the second locking member are both retracted and accommodated in the accommodating groove.

7. The handlebar assembly according to claim 2, characterized in that: The upper handle assembly is provided with a limiting protrusion, the push member is provided with a limiting groove, the limiting protrusion is located in the limiting groove, and the width of the limiting groove is greater than the width of the limiting protrusion; When the first locking member and the second locking member lock the handle assembly, one side surface of the limiting protrusion abuts against one side surface of the limiting groove; When the push member rotates to the other side of the limiting groove and abuts against the other side of the limiting protrusion, the push member drives the first locking member and the second locking member to disengage from the locking groove, thereby unlocking the handle assembly.

8. The handle assembly according to claim 1, characterized in that: The unlocking member and the resisting member are connected via a pull wire; when the unlocking member is pressed, the unlocking member pulls the resisting member via the pull wire to cause the resisting member to rotate.

9. A baby stroller, characterized in that: include: A front wheel assembly, a rear wheel assembly, a handlebar assembly, an upper connecting rod and a lower connecting rod as claimed in any one of claims 1 to 8; wherein: The front wheel group, the rear wheel group and the lower handlebar group are rotatably connected; one end of the upper connecting rod is rotatably connected to the upper handlebar group, and the other end of the upper connecting rod is rotatably connected to the lower connecting rod; the lower connecting rod is rotatably connected to the front wheel group; When the unlocking member drives the locking mechanism to unlock, the child stroller can be folded.

10. The stroller according to claim 9, characterized in that: When the stroller is folded: the upper handlebar assembly rotates downward and drives the upper connecting rod to rotate, the upper connecting rod drives the lower connecting rod to rotate, the lower connecting rod drives the front wheel assembly to rotate, and the upper handlebar assembly, the lower handlebar assembly, the upper connecting rod, the lower connecting rod and the front wheel assembly all move closer to the rear wheel assembly.

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