Baby carriage with linkage unlocking mechanism

Abstract

The invention belongs to the technical field of baby carriages, and particularly relates to a baby carriage with a linkage unlocking mechanism. Comprising a frame body, a seat assembly arranged on the frame body, a backrest assembly connected with the seat assembly, a backrest unlocking mechanism arranged on the backrest assembly and used for unlocking the backrest assembly to be folded relative to the seat assembly, a seat unlocking mechanism arranged on the seat assembly and a frame unlocking mechanism arranged on the frame body. The backrest assembly rotates relative to the seat assembly to drive the seat unlocking mechanism to unlock the seat assembly to rotate, and the seat assembly rotates relative to the frame body to drive the frame unlocking mechanism to unlock the frame body to be folded. According to the invention, the step-by-step unlocking and folding of the seat and the frame mechanism can be automatically triggered only by operating the single action of folding the backrest, so that the operation process is remarkably simplified, a user does not need to respectively search and trigger a plurality of independent keys, the operation process of the user is greatly simplified, and the operation convenience is improved.

Description

TECHNICAL FIELD

BACKGROUND

SUMMARY

[0001] The present application is achieved by the following technical solutions: A baby stroller with a linkage unlocking mechanism, comprising a frame body, a seat assembly arranged on the frame body, a backrest assembly connected with the seat assembly, a backrest unlocking mechanism arranged on the backrest assembly and used for unlocking the folding of the backrest assembly relative to the seat assembly, a seat unlocking mechanism arranged on the seat assembly, and a frame unlocking mechanism arranged on the frame body, the backrest assembly rotates relative to the seat assembly, drives the seat unlocking mechanism to unlock the rotation of the seat assembly, and the seat assembly rotates relative to the frame body, drives the frame unlocking mechanism to unlock the folding of the frame body.

[0002] The baby stroller with a linkage unlocking mechanism as described above, the backrest unlocking mechanism comprises an unlocking piece, a wheel disc coaxially connected with the seat assembly, and a backrest lock pin connected with the unlocking piece through a pull wire and inserted into the wheel disc, the wheel disc is provided with a positioning hole for inserting the backrest lock pin to limit the rotation of the backrest assembly relative to the seat assembly.

[0003] The baby stroller with a linkage unlocking mechanism as described above, the wheel disc is provided with a plurality of positioning holes for inserting the backrest lock pin to keep the backrest assembly at the current angle and limit the rotation of the backrest assembly relative to the seat assembly.

[0004] A baby carriage with linkage unlocking mechanism as described above, the seat unlocking mechanism comprises a driving ring coaxially connected with the seat assembly, a seat unlocking slider slidingly arranged on the wheel disc, and a lock block abutting against the seat unlocking slider and slidingly arranged on the driving ring, the backrest assembly is provided with a push block for pushing the seat unlocking slider, the frame body is provided with a first limiting slot for partially embedding the lock block, the driving ring is provided with a second limiting slot for partially embedding the lock block, and the lock block is simultaneously embedded in the first limiting slot and the second limiting slot to limit the rotation of the seat assembly relative to the frame body.

[0005] A baby carriage with linkage unlocking mechanism as described above, the seat unlocking mechanism further comprises a first elastic member arranged between the lock block and the driving ring, a second elastic member arranged between the seat unlocking slider and the wheel disc, the lock block is provided with a hole slot for coaxially connecting the seat assembly and the frame body, the first elastic member drives the lock block to be embedded in the first limiting slot and the second limiting slot to limit the rotation of the seat assembly relative to the frame body, when the backrest assembly rotates relative to the seat assembly, the push block presses down the seat unlocking slider to drive the lock block to be separated from the first limiting slot downward, so as to release the limitation of the rotation of the seat assembly relative to the frame body, and the second elastic member drives the seat unlocking slider to slide upward and reset.

[0006] A baby carriage with linkage unlocking mechanism as described above, the frame unlocking mechanism comprises a joint unlocking slider arranged on the frame body, and a joint lock pin in inclined abutment with the joint unlocking slider, the driving ring is provided with a driving abutment for pushing the joint unlocking slider to slide away from the driving ring, the frame body is provided with a lock hole for inserting the joint lock pin, and the joint lock pin is inserted into the lock hole to limit the folding of the frame body.

[0007] A baby carriage with linkage unlocking mechanism as described above, the frame unlocking mechanism further comprises a third elastic member arranged between the joint unlocking slider and the frame body, the joint unlocking slider is provided with a sliding groove for slidingly cooperating with the joint lock pin to make the joint lock pin inserted into or separated from the lock hole, when the seat assembly rotates, the driving abutment presses down the joint unlocking slider to drive the joint lock pin to be separated from the lock hole, so as to release the limitation of the folding of the frame body, and the third elastic member drives the joint unlocking slider to slide and reset to drive the joint lock pin to be inserted into the lock hole to limit the folding of the frame body.

[0008] The child stroller with the linkage unlocking mechanism, the driving abutment is arranged along the outer edge of the driving ring, and a first driving slope is arranged on one end of the joint unlocking slider close to the driving abutment.

[0009] The child stroller with the linkage unlocking mechanism, the stroller frame body comprises a connecting piece, a rear leg group connected with the connecting piece, a front leg group and a handle group hinged with the connecting piece, and a synchronous mechanism for synchronously folding the front leg group and the handle group to the rear leg group.

[0010] The child stroller with the linkage unlocking mechanism, the synchronous mechanism comprises a connecting rod, a first connecting hole for inserting one end of the connecting rod is arranged on the front leg group, a second connecting hole for inserting the other end of the connecting rod is arranged on the handle group, a first displacement slot corresponding to the displacement track of the first connecting hole is arranged on the connecting piece, and a second displacement slot corresponding to the displacement track of the second connecting hole is arranged on the connecting piece, and the handle group is folded to the rear leg group, and the connecting rod is synchronously driven to fold the front leg group to the rear leg group; the front leg group is folded to the rear leg group, and the connecting rod is synchronously driven to fold the handle group to the rear leg group.

[0011] Compared with the prior art, the present application has the following advantages: The child stroller with the linkage unlocking mechanism of the present application realizes the automatic triggering of the step-by-step unlocking and folding of the seat and the stroller frame mechanism by only one operation of folding the backrest, significantly simplifies the operation process, and greatly simplifies the operation process of the user, thereby improving the operation convenience. BRIEF DESCRIPTION OF DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0012] Figure 1 is a three-dimensional view in the embodiments of the present application; Figure 2 is Figure 1 a partial exploded view of the seat assembly in Figure 3 is Figure 1 a partial exploded view of the stroller frame body in Figure 1 ; Figure 4 is Figure 3 is an enlarged view of A in FIG. 1; Figure 5 is Figure 1 is a partial exploded view of the frame body in FIG. 1; Figure 2 ; Figure 6 is Figure 5 is an enlarged view of B in FIG. 1; Figure 7 is a schematic view of the internal structure of the seat unlocking mechanism before unlocking; Figure 8 is a schematic view of the internal structure of the seat unlocking mechanism after unlocking; Figure 9 is a schematic view of the internal structure of the frame unlocking mechanism before unlocking; Figure 10 is a schematic view of the internal structure of the frame unlocking mechanism after unlocking; Figure 11 is a schematic view of the unfolded state of the embodiment of the present application; Figure 12 is a schematic view of the folded state of the backrest of the embodiment of the present application; Figure 13 is a schematic view of the folded state of the frame of the embodiment of the present application; Figure 14 is a schematic view of the internal structure of the synchronization mechanism when unfolded; Figure 15 is a schematic view of the internal structure of the synchronization mechanism when folded.

DETAILED DESCRIPTION

[0013] Please refer to Figures 1 to 15 , a stroller with a linkage unlocking mechanism, comprising a frame body 1, a seat assembly 2 arranged on the frame body 1, a backrest assembly 3 connected with the seat assembly 2, a backrest unlocking mechanism 4 arranged on the backrest assembly 3 and used to unlock the folding of the backrest assembly 3 relative to the seat assembly 2, a seat unlocking mechanism 5 arranged on the seat assembly 2, and a frame unlocking mechanism 6 arranged on the frame body 1, the backrest assembly 3 rotates relative to the seat assembly 2, drives the seat unlocking mechanism 5 to unlock the rotation of the seat assembly 2, the seat assembly 2 rotates relative to the frame body 1, and drives the frame unlocking mechanism 6 to unlock the folding of the frame body 1.

[0014] The present application provides a baby stroller with a linkage unlocking mechanism, which unlocks the seat assembly by rotating the backrest assembly, and then unlocks the frame body by rotating the seat assembly. This mechanism automatically triggers the step-by-step unlocking and folding of the seat and frame mechanisms with a single operation of folding the backrest, significantly simplifying the operation process. The user does not need to search for and trigger multiple independent buttons separately, which greatly simplifies the user's operation process and improves the convenience of operation.

[0015] Furthermore, as a preferred embodiment of the present invention but not a limitation, the backrest unlocking mechanism 4 includes an unlocking member 41, a wheel 42 coaxially connected to the seat assembly 2, and a backrest locking pin 43 connected to the unlocking member 41 by a pull wire and one end of which is inserted into the wheel 42. The wheel 42 is provided with a positioning hole 44 for inserting the backrest locking pin 43 to limit the rotation of the backrest assembly 3 relative to the seat assembly 2.

[0016] In this embodiment, remote control of the unlocking action is achieved through the pull-wire transmission connection between the unlocking member 41 and the backrest lock pin 43. The rotation limiting structure composed of the wheel 42 coaxially connected to the seat assembly 2 and the positioning hole 44 thereon can effectively limit the rotation of the backrest assembly 3 relative to the seat assembly 2. When the user operates the unlocking member 41, the pull-wire drives the backrest lock pin 43 to be pulled out of the positioning hole 44 of the wheel 42, thereby releasing the angle restriction on the backrest assembly 3, thereby allowing the backrest assembly 3 to rotate around the axis of the seat assembly 2 for folding; when the unlocking member 41 is released, the backrest lock pin 43 automatically resets under the action of the elastic member and is reinserted into the nearest positioning hole 44, thereby achieving reliable locking of the backrest angle.

[0017] Furthermore, as a preferred embodiment of the present invention but not a limitation, the wheel disc 42 is provided with a plurality of positioning holes 44 for inserting the backrest locking pin 43 to maintain the backrest assembly 3 at the current angle and limit the rotation of the backrest assembly 3 relative to the seat assembly 2.

[0018] In this embodiment, a wheel 42 is coaxially connected to the seat assembly 2 and is provided with a plurality of positioning holes 44. A backrest locking pin 43 can be inserted into or removed from these holes under the control of an unlocking member 41. When the backrest locking pin 43 is inserted into a positioning hole 44, the backrest assembly 3 is locked at its current angle and cannot rotate relative to the seat assembly 2. However, when the unlocking member 41, via a pull cord, pulls the backrest locking pin 43 out of the positioning hole 44, the backrest assembly 3 can rotate freely, allowing the backrest to be retracted. This design not only simplifies the operation process, as the user only needs to control the locking and unlocking of the backrest with the single unlocking member 41, but also increases user flexibility, allowing the backrest to be adjusted to different angles as needed.

[0019] Further, as a preferred embodiment of the present scheme but not limited, the seat unlocking mechanism 5 comprises a driving ring 51 coaxially connected with the seat assembly 2, a seat unlocking slider 52 slidingly arranged on the wheel disc 42, and a lock block 53 abutting against the seat unlocking slider 52 and slidingly arranged on the driving ring 51, the backrest assembly 3 is provided with a push block 54 for pushing the seat unlocking slider 52, the vehicle frame body 1 is provided with a first limiting groove 55 for locally embedding the lock block 53, the driving ring 51 is provided with a second limiting groove 56 for locally embedding the lock block 53, and the lock block 53 is simultaneously embedded in the first limiting groove 55 and the second limiting groove 56 to limit the rotation of the seat assembly 2 relative to the vehicle frame body 1.

[0020] In the embodiment, the seat unlocking mechanism 5 cooperates with the driving ring 51, the seat unlocking slider 52 and the lock block 53 to build a structure with limiting and linkage unlocking functions, which can effectively control the rotation of the seat assembly 2 relative to the vehicle frame body 1 and realize automatic unlocking and resetting operation. When the backrest assembly 3 rotates, the push block 54 arranged thereon will actively push the seat unlocking slider 52, so that the seat unlocking slider 52 slides along the surface of the wheel disc 42 and drives the lock block 53 abutting thereto to move, thereby making the lock block 53 disengage from the first limiting groove 55 on the vehicle frame body 1 to realize the unlocking action of the seat assembly 2. In the unlocked state, the seat assembly 2 can rotate relative to the vehicle frame body 1.

[0021] Further, as a preferred embodiment of the present scheme but not limited, the seat unlocking mechanism 5 further comprises a first elastic member 57 arranged between the lock block 53 and the driving ring 51, a second elastic member 58 arranged between the seat unlocking slider 52 and the wheel disc 42, and a hole slot 59 arranged on the lock block 53 for coaxially connecting the seat assembly 2 and the vehicle frame body 1. The first elastic member 57 drives the lock block 53 to be embedded in the first limiting groove 55 and the second limiting groove 56 to limit the rotation of the seat assembly 2 relative to the vehicle frame body 1. When the backrest assembly 3 rotates relative to the seat assembly 2, the push block 54 presses the seat unlocking slider 52 to drive the lock block 53 to disengage downward from the first limiting groove 55 to release the limitation of the rotation of the seat assembly 2 relative to the vehicle frame body 1, and the second elastic member 58 drives the seat unlocking slider 52 to slide upward for resetting.

[0022] In this embodiment, the seat unlocking mechanism 5 is constructed by setting a first elastic member 57 between the lock block 53 and the driving ring 51, setting a second elastic member 58 between the seat unlocking slider 52 and the wheel disc 42, and setting a hole slot 59 on the lock block 53 for coaxial connection of the seat assembly 2 and the frame body 1, thereby constructing a linkage locking structure with elastic self-resetting and precise limiting functions. When no operation is performed, the first elastic member 57 pushes the lock block 53 into the first limiting slot 55 on the frame body 1 and the second limiting slot 56 on the driving ring 51, thereby realizing stable locking of the seat assembly 2 relative to the frame body 1 and ensuring the structural stability and safety of the stroller in the normal use state. When the backrest assembly 3 rotates relative to the seat assembly 2, the push block 54 provided thereon presses the seat unlocking slider 52, and the slider 52 drives the lock block 53 to move downward, so that the lock block 53 is separated from the first limiting slot 55, and the rotation restriction of the seat assembly 2 relative to the frame body 1 is released, thereby realizing smooth unlocking of the seat assembly 2. When unfolded, the seat unlocking slider 52 is automatically returned upward under the action of the second elastic member 58, and the first elastic member 57 also pushes the lock block 53 into the limiting slot again, thereby realizing automatic resetting and relocking of the structure. The whole process of unlocking and resetting is automatically realized, the user does not need to repeatedly manually operate, the convenience and humanized design level of use are greatly improved, the reliability of the locked state is ensured, and safety accidents caused by accidental folding of the seat assembly 2 under the unlocked condition are prevented.

[0023] Further, as a preferred embodiment of the present scheme but not limited, the frame unlocking mechanism 6 includes a joint unlocking slider 61 provided on the frame body 1, and a joint lock pin 62 in inclined cooperation with the joint unlocking slider 61. The driving ring 51 is provided with a driving abutting member 63 for abutting and pushing the joint unlocking slider 61 to slide away from the driving ring 51. The frame body 1 is provided with a lock hole 64 for insertion of the joint lock pin 62. The joint lock pin 62 is inserted into the lock hole 64 to limit folding of the frame body 1.

[0024] In this embodiment, the frame unlocking mechanism 6 is formed by the joint unlocking slider 61 provided on the frame body 1, the joint lock pin 62 matched with the wedge, and the driving abutting piece 63 provided on the driving ring 51, which constitutes a compact, accurate and strong linkage unlocking and limiting mechanism. When the seat assembly 2 starts to rotate, the driving abutting piece 63 on the driving ring 51 will move synchronously and push the joint unlocking slider 61 to slide away from the driving ring 51. Since the joint unlocking slider 61 is matched with the joint lock pin 62 in a wedge relationship, the joint unlocking slider 61 will drive the joint lock pin 62 to move axially, so that the joint lock pin 62 is pulled out of the lock hole 64 on the frame body 1, thereby unlocking the folding action of the frame body 1. The lock pin inserted into the lock hole can firmly limit the unfolded state of the frame, ensure the stability of the structure, and prevent the frame from being directly folded without operating the seat, thereby improving the safety and anti-misoperation ability of the vehicle. When the seat assembly rotates to fold, the driving ring drives the unlocking slider, and then the wedge linkage unlocks the lock pin, which not only forms linkage between the frame unlocking action and the seat action, but also avoids the problem of manually operating the frame lock pin in the traditional structure, greatly simplifies the operation process, and improves the use efficiency and user experience.

[0025] Further, as a preferred embodiment of the present scheme, the frame unlocking mechanism 6 further comprises a third elastic member 65 provided between the joint unlocking slider 61 and the frame body 1. The joint unlocking slider 61 is provided with a sliding groove 66 for sliding cooperation of the joint lock pin 62 to insert or pull out the joint lock pin 62 from the lock hole 64. When the seat assembly 2 rotates, the driving abutting piece 63 presses the joint unlocking slider 61 to pull out the joint lock pin 62 from the lock hole 64, so as to release the limitation of folding the frame body 1. The third elastic member 65 drives the joint unlocking slider 61 to slide back and pull the joint lock pin 62 into the lock hole 64 to limit the folding of the frame body 1.

[0026] In this embodiment, a third elastic member 65 is arranged between the joint unlocking slider 61 and the frame body 1, and a sliding groove 66 is formed on the joint unlocking slider 61 for sliding cooperation with the joint lock pin 62, thereby realizing a linkage type unlocking and locking structure with self-resetting function. When the seat assembly 2 rotates, the driving abutment 63 on the driving ring 51 will simultaneously press downward on the joint unlocking slider 61, so that the slider 61 moves in the sliding direction and drives the joint lock pin 62, which cooperates with the wedge, to slide axially, thereby making the lock pin 62 separate from the lock hole 64 on the frame body 1, completing the unlocking operation of the unfolded state of the frame, and making the frame body 1 have the possibility of folding. When the seat assembly is reset or no longer triggers the unlocking action, the third elastic member 65 will drive the joint unlocking slider 61 to slide back to its original position, thereby driving the lock pin 62 to reinsert into the lock hole 64, realizing the relocking of the frame structure. This structure realizes the linkage triggering of the seat assembly rotation action on the frame unlocking action in operation, and the user only needs to perform one operation to complete two unlocking steps, effectively improving the operation efficiency in the folding process of the baby carriage, reducing repeated operation steps, and significantly enhancing the convenience. Further, the third elastic member 65 provides the automatic reset capability of the structure, so that the unlocking structure can automatically recover and restore the locking function after operation without manual intervention of the user, thereby effectively avoiding the safety hazards such as structure loosening and misfolding caused by forgetting to reset or improper operation.

[0027] Further, as a preferred embodiment of the present scheme but not limited, the driving abutment 63 is arranged along the outer edge of the driving ring, and a first driving slope 67 is arranged on one end of the driving abutment 63 close to the joint unlocking slider 61, and a second driving slope 68 is arranged on the joint unlocking slider 61 and cooperates with the first driving slope 67.

[0028] In this embodiment, when the seat assembly 2 rotates to drive the driving ring 51 to rotate, the driving abutment 63 moves, and the first driving slope 67 on the driving abutment 63 gradually slides into and presses the second driving slope 68 on the joint unlocking slider 61. The relative sliding and contact pressure between the slopes effectively convert the circumferential movement of the driving ring into the axial sliding of the joint unlocking slider 61, thereby driving the joint lock pin 62 to separate from the lock hole 64 and realizing the smooth unlocking of the frame body 1. On the one hand, the self-adaptive contact is formed by the slope cooperation, which not only has smooth transmission but also has certain self-positioning and self-alignment functions, which can effectively alleviate the meshing problem caused by component manufacturing errors or installation deviations, improve the reliability and consistency of the structure transmission; on the other hand, the wedge structure has the mechanical advantage of amplifying force, which can realize larger pushing stroke under smaller driving force, which helps to reduce the user operation force, improve the operation feeling and use comfort.

[0029] Further, as a preferred embodiment of the present scheme but not as a limitation, the frame body 1 comprises a connecting piece 11, a rear leg group 12 connected with the connecting piece 11, a front leg group 13 hinged with the connecting piece 11, a handle group 14, and a synchronization mechanism 15 for synchronizing the front leg group 13 and the handle group 14 to move closer to the rear leg group 12.

[0030] In the present embodiment, the front leg group 13 and the handle group 14 are simultaneously and cooperatively moved closer to the rear leg group 12 during folding, forming an integrated folding movement. When the user performs the folding operation, the synchronization mechanism 15 links the front leg group 13 and the handle group 14 through a mechanical transmission structure, so that they are synchronously moved in corresponding trajectories at the same time, thereby realizing quick, simple, and symmetrical folding of the entire frame. This structure not only effectively improves the folding efficiency and avoids the jamming, deflection, or operation confusion phenomenon caused by the separate movement of components in the traditional folding process, but also makes the frame shape more compact and regular after folding, facilitating storage and transportation, and improving the overall user experience and space utilization.

[0031] Further, as a preferred embodiment of the present scheme but not as a limitation, the synchronization mechanism 15 comprises a connecting rod 151, a first connecting hole 152 provided on the front leg group 13 for inserting one end of the connecting rod 151, a second connecting hole 153 provided on the handle group 14 for inserting the other end of the connecting rod 151, a first displacement slot 154 provided on the connecting piece 11 corresponding to the displacement trajectory of the first connecting hole 152, and a second displacement slot 155 provided on the connecting piece 11 corresponding to the displacement trajectory of the second connecting hole 153. When the handle group 14 moves closer to the rear leg group 12, it drives the connecting rod 151 to synchronously drive the front leg group 13 to move closer to the rear leg group 12. When the front leg group 13 moves closer to the rear leg group 12, it drives the connecting rod 151 to synchronously drive the handle group 14 to move closer to the rear leg group 12.

[0032] In this embodiment, the first connecting hole 152 and the second connecting hole 153 between the connecting rod 151 and the front foot group 13 and the handle group 14 are connected to form a transmission connection, and the first displacement slot 154 and the second displacement slot 155 corresponding to the displacement trajectories of the two connecting holes are arranged on the connecting piece 11, thereby constructing a folding synchronization system with a structural guiding function and a bidirectional linkage capability. When the handle group 14 or the front foot group 13 is moved towards the rear foot group 12, the other component can be driven to move towards the rear foot group 12 by the transmission effect of the connecting rod 151, thereby realizing the bidirectional driving type cooperative folding of the front foot group 13 and the handle group 14, significantly improving the folding fluency and folding consistency of the whole vehicle, avoiding the problems such as step sequence disorder and jamming in the traditional structure caused by the independent folding of multiple components, and enabling the user to complete the folding action of the whole frame by pushing only one component, thereby greatly improving the convenience and intelligent level of operation. Meanwhile, the displacement slots 154 and 155 provide necessary space guidance for the connecting rod 151 in the folding movement, so that the connecting rod always maintains a reasonable movement path during the overall structural deformation, avoids deformation jamming caused by space interference or sliding deviation, and improves the reliability of structural movement.

[0033] The working principle of the embodiment is as follows: When the user starts to fold the backrest assembly backwards, the unlocking piece in the backrest unlocking mechanism drives the backrest lock pin to be pulled out of the positioning hole of the wheel disc through the pull wire, thereby removing the rotation restriction of the backrest on the seat and enabling the backrest assembly to rotate relative to the seat assembly. During the rotation of the backrest, the push block arranged thereon presses the seat unlocking slider, the slider drives the lock block to exit from the limiting slot between the frame main body and the driving ring, thereby realizing the unlocking of the seat assembly relative to the frame main body and allowing the seat assembly to continue to rotate. At the same time, the driving ring rotates with the seat and pushes the driving abutment arranged on the outer edge thereof, the first driving slope on the abutment and the second driving slope on the joint unlocking slider wedge cooperate, the rotational movement is converted into the axial sliding of the slider, and then the joint lock pin is pulled out of the frame lock hole, thereby realizing the unlocking of the frame structure. After the unlocking of the frame, the front foot group and the handle group move towards the rear foot group under the action of the synchronization mechanism through the bidirectional linkage of the connecting rod, thereby completing the folding operation of the whole vehicle. During the whole process, multiple elastic pieces act on the lock block, the slider and the joint lock pin, respectively, to realize the automatic resetting and relocking after the unlocking, thereby ensuring the fluency, safety and reliability of the folding and unfolding processes.

[0034] The above is an embodiment provided in combination with specific content, and it is not intended that the specific implementation of the present application is limited to these descriptions. Any approximation to the method structure of the present application, or any technical deduction or replacement made on the basis of the concept of the present application, should be regarded as the protection scope of the present application.

Claims

1. A baby carriage with a linkage unlocking mechanism, characterized in that: The vehicle comprises a frame body (1), a seat assembly (2) arranged on the frame body (1), a backrest assembly (3) connected to the seat assembly (2), a backrest unlocking mechanism (4) arranged on the backrest assembly (3) and used for unlocking the backrest assembly (3) relative to the seat assembly (2) for folding, a seat unlocking mechanism (5) arranged on the seat assembly (2), and a frame unlocking mechanism (6) arranged on the frame body (1), wherein the backrest assembly (3) rotates relative to the seat assembly (2), driving the seat unlocking mechanism (5) to unlock the seat assembly (2) for rotation, and the seat assembly (2) rotates relative to the frame body (1), driving the frame unlocking mechanism (6) to unlock the frame body (1) for folding.

2. A baby carriage with a linkage unlocking mechanism according to claim 1, characterized in that: The backrest unlocking mechanism (4) comprises an unlocking member (41), a wheel (42) coaxially connected to the seat assembly (2), and a backrest locking pin (43) connected to the unlocking member (41) via a pull wire and having one end inserted into the wheel (42). The wheel (42) is provided with a positioning hole (44) for the backrest locking pin (43) to be inserted to limit the rotation of the backrest assembly (3) relative to the seat assembly (2).

3. A baby carriage with a linkage unlocking mechanism according to claim 2, characterized in that: The wheel disc (42) is provided with a plurality of positioning holes (44) for inserting the backrest locking pins (43) to maintain the backrest assembly (3) at a current angle and limit the rotation of the backrest assembly (3) relative to the seat assembly (2).

4. A baby carriage with a linkage unlocking mechanism according to claim 2, characterized in that: The seat unlocking mechanism (5) comprises a driving ring (51) coaxially connected to the seat assembly (2), a seat unlocking slider (52) slidably arranged on the wheel disc (42), and a locking block (53) abutting against the seat unlocking slider (52) and slidably arranged on the driving ring (51); the backrest assembly (3) is provided with a pushing block (54) for pushing the seat unlocking slider (52); the frame body (1) is provided with a first limiting groove (55) for partially embedding the locking block (53); the driving ring (51) is provided with a second limiting groove (56) for partially embedding the locking block (53); the locking block (53) is embedded in the first limiting groove (55) and the second limiting groove (56) at the same time to limit the rotation of the seat assembly (2) relative to the frame body (1).

5. A baby carriage with a linkage unlocking mechanism according to claim 4, characterized in that: The seat unlocking mechanism (5) further includes a first elastic member (57) provided between the locking block (53) and the driving ring (51), and a second elastic member (58) provided between the seat unlocking slider (52) and the wheel disc (42). The locking block (53) is provided with a hole groove (59) for coaxially connecting the seat assembly (2) and the frame body (1). The first elastic member (57) drives the locking block (53) to be embedded in the first limiting groove (55) and the second limiting groove (56) to limit the rotation of the seat assembly (2) relative to the frame body (1). When the backrest assembly (3) rotates relative to the seat assembly (2), the push block (54) presses down the seat unlocking slider (52) to drive the locking block (53) to disengage from the first limiting groove (55) downward to release the restriction on the rotation of the seat assembly (2) relative to the frame body (1). The second elastic member (58) drives the seat unlocking slider (52) to slide upward and reset.

6. A baby carriage with a linkage unlocking mechanism according to claim 4, characterized in that: The frame unlocking mechanism (6) includes a joint unlocking slider (61) provided on the frame body (1), and a joint locking pin (62) that is obliquely matched with the joint unlocking slider (61); the driving ring (51) is provided with a driving member (63) for pushing the joint unlocking slider (61) to slide away from the driving ring (51); the frame body (1) is provided with a locking hole (64) for inserting the joint locking pin (62); the joint locking pin (62) is inserted into the locking hole (64) to limit the folding of the frame body (1).

7. A baby carriage with a linkage unlocking mechanism according to claim 6, characterized in that: The frame unlocking mechanism (6) further includes a third elastic member (65) provided between the joint unlocking slider (61) and the frame body (1); the joint unlocking slider (61) is provided with a sliding groove (66) for the joint locking pin (62) to slide and cooperate so that the joint locking pin (62) is inserted into or withdrawn from the locking hole (64); when the seat assembly (2) rotates, the driving member (63) presses down the joint unlocking slider (61) to drive the joint locking pin (62) to withdraw from the locking hole (64) to release the restriction on the frame body (1) from folding; the third elastic member (65) drives the joint unlocking slider (61) to slide and reset to drive the joint locking pin (62) to insert into the locking hole (64) to restrict the frame body (1) from folding.

8. A baby carriage with a linkage unlocking mechanism according to claim 6, characterized in that: The driving member (63) is arranged along the outer edge of the driving ring, and a first driving inclined surface (67) is provided on the driving member (63) at one end close to the joint unlocking slider (61), and a second driving inclined surface (68) is provided on the joint unlocking slider (61) to be bevelly matched with the first driving inclined surface (67).

9. The baby carriage with a linkage unlocking mechanism according to claim 6, characterized in that: The frame body (1) comprises a connecting member (11), a rear foot group (12) connected to the connecting member (11), a front foot group (13) and a handlebar group (14) hinged to the connecting member (11), and a synchronization mechanism (15) for causing the front foot group (13) and the handlebar group (14) to synchronously move toward the rear foot group (12) for folding.

10. A baby carriage with a linkage unlocking mechanism according to claim 9, characterized in that: The synchronization mechanism (15) includes a connecting rod (151), a first connecting hole (152) for inserting one end of the connecting rod (151) on the front foot group (13), a second connecting hole (153) for inserting the other end of the connecting rod (151) on the handle group (14), a first giving way groove (154) corresponding to the displacement trajectory of the first connecting hole (152) and a second giving way groove (155) corresponding to the displacement trajectory of the second connecting hole (153) on the connecting member (11), the handle group (14) moves closer to the rear foot group (12), driving the connecting rod (151) to synchronously drive the front foot group (13) to move closer to the rear foot group (12); the front foot group (13) moves closer to the rear foot group (12), driving the connecting rod (151) to synchronously drive the handle group (14) to move closer to the rear foot group (12).

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