Folding baby carriage with double unlocking mechanisms

Abstract

The utility model belongs to the technical field of baby carriages, and particularly relates to a folding baby carriage with double unlocking mechanisms. Comprising a seat assembly, a backrest assembly hinged to the seat assembly, a mounting seat hinged to the backrest assembly and used for being connected with a frame, and an unlocking mechanism arranged on the backrest assembly. The unlocking mechanism has a first stroke used for unlocking the backrest assembly to rotate relative to the seat assembly and a second stroke used for unlocking the seat assembly to rotate relative to the mounting base. Dual-function unlocking is achieved through different strokes of the unlocking mechanism, the first stroke of the unlocking mechanism is used for unlocking rotation of the backrest assembly relative to the seat assembly, and therefore the backrest angle of the seat is adjusted; and the second stroke is used for unlocking the rotation of the seat assembly relative to the mounting seat, so that the folding of the seat is realized. The user operation is simplified, and the use convenience and efficiency are improved.

Description

TECHNICAL FIELD

[0002] The present application belongs to the technical field of baby strollers, and particularly relates to a folding baby stroller with a dual release mechanism. BACKGROUND

[0004] In the existing design of baby strollers, the adjustment of the backrest angle of the seat and the folding of the seat relative to the frame are usually operated by two independent buttons. This design makes the operation cumbersome, and the user needs to find and operate two different buttons, which may be inconvenient in actual use. In addition, the existence of multiple buttons also increases the manufacturing cost and maintenance difficulty of the baby stroller. SUMMARY

[0006] In order to solve the problem that the adjustment of the backrest angle of the seat and the unlocking of the folding of the seat are realized by two independent buttons in the prior art, resulting in cumbersome operation, the present application provides a folding baby stroller with a dual release mechanism.

[0007] The present application is realized by the following technical solutions:

[0008] A folding baby stroller with a dual release mechanism, comprising a seat assembly, a backrest assembly hinged to the seat assembly, a mounting seat for connecting the frame and hinged to the backrest assembly, and a release mechanism provided on the backrest assembly, the release mechanism having a first stroke for unlocking the rotation of the backrest assembly relative to the seat assembly and a second stroke for unlocking the rotation of the seat assembly relative to the mounting seat.

[0009] The folding baby stroller with a dual release mechanism as described above further comprises a two-way lock mechanism provided on the release mechanism and used to limit or release the movement of the release mechanism to the second stroke.

[0010] The folding baby stroller with a dual release mechanism as described above, the release mechanism comprises an unlocking piece, a gear coaxially connected with the seat assembly, a driving ring rotationally connected with the unlocking piece through a pull wire and coaxially arranged with the gear, a lock pin engaged with the driving ring and inserted into the gear at one end, a plurality of positioning holes are provided on the gear for the lock pin to be inserted to retain the backrest assembly at the current angle and limit the rotation of the backrest assembly relative to the seat assembly, a first elastic member is provided in the backrest assembly for driving the lock pin to be inserted into the positioning hole, and a second elastic member is provided for driving the driving ring to reset.

[0011] The folding stroller with double release lock mechanism as claimed in claim 1, wherein the release lock mechanism further comprises a lock tooth, the gear is provided with a first tooth groove for partially embedding the lock tooth, the mounting base is provided with a second tooth groove for partially embedding the lock tooth, the lock tooth is provided with a top block matched with the inclined tooth of the driving ring, and the lock tooth is simultaneously embedded in the first tooth groove and the second tooth groove to limit the rotation of the seat assembly relative to the mounting base.

[0012] The folding stroller with double release lock mechanism as claimed in claim 1, wherein when the release member is actuated along the second stroke, the driving ring is continuously rotated to push the lock tooth out of the first tooth groove and sink into the second tooth groove to release the limitation of the rotation of the seat assembly relative to the mounting base, and the first elastic member and the second elastic member are compressed under force.

[0013] The folding stroller with double release lock mechanism as claimed in claim 1, further comprising an armrest assembly hinged to the seat assembly, and an unlocking mechanism for limiting the rotation of the armrest assembly relative to the seat assembly or releasing the limitation of the rotation of the armrest assembly relative to the seat assembly synchronously.

[0014] The folding stroller with double release lock mechanism as claimed in claim 1, wherein the unlocking mechanism comprises a lock block arranged on the seat assembly, a guide block arranged on the backrest assembly and matched with the lock block, and a limiting groove arranged on the armrest assembly and inserted by the guide block to limit the rotation of the armrest assembly relative to the seat assembly, and a third elastic member arranged between the lock block and the seat assembly to drive the lock block to insert into the limiting groove, and when the backrest assembly is folded forward relative to the seat assembly, the guide block drives the lock block to move out of the limiting groove to release the limitation of the rotation of the armrest assembly relative to the seat assembly.

[0015] The folding stroller with double release lock mechanism as claimed in claim 1, wherein the gear is arranged circumferentially around the lock tooth, the driving ring is arranged circumferentially around the gear, and the top block extends outward from the gear to the driving ring.

[0016] The folding stroller with double release lock mechanism as claimed in claim 1, wherein the driving ring is provided with a clearance groove for embedding the top block and corresponding to the first stroke.

[0017] The folding stroller with double release mechanism has the following advantages compared with the prior art.

[0018] The folding stroller with double release mechanism has the following advantages compared with the prior art.

[0019] The folding stroller with double release mechanism has the following advantages compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. 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 any creative effort based on these drawings.

[0022] Figure 1 is a three-dimensional view in the embodiment of the present application;

[0023] Figure 2 is a schematic view of the release mechanism in the first stroke in the embodiment of the present application; Figure 1

[0024] Figure 3 is a schematic view of the release mechanism in the second stroke in the embodiment of the present application; Figure 1

[0025] is a partial exploded view of the embodiment of the present application Figure 4 Figure 1

[0026] Figure 5 ​​​is Figure 4 a three-dimensional solid Figure 1 ;

[0027] Figure 6 is Figure 4 a three-dimensional solid Figure 2 ;

[0028] Figure 7 is a partial exploded view of the embodiment of the present application Figure 2 ;

[0029] Figure 8 is Figure 7 a three-dimensional solid Figure 1 ;

[0030] Figure 9 is a partial exploded view of the embodiment of the present application Figure 3 ;

[0031] Figure 10 is a half-folded schematic view of the embodiment of the present application

[0032] Figure 11 is Figure 10 an enlarged view of A in

[0033] Figure 12 is a fully folded schematic view of the embodiment of the present application

[0034] Figure 13 is Figure 12 an enlarged view of B in

DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0037] Please refer to Figures 1 to 13 , a folding stroller with double release lock mechanism, comprising a seat assembly 1, a backrest assembly 2 hinged to the seat assembly 1, a mounting seat 3 hinged to the backrest assembly 2 and used to connect a frame, and a release lock mechanism 4 provided on the backrest assembly 2, the release lock mechanism 4 having a first stroke 41 for unlocking the rotation of the backrest assembly 2 relative to the seat assembly 1 and a second stroke 42 for unlocking the rotation of the seat assembly 1 relative to the mounting seat 3.

[0038] The folding stroller with double release mechanism of the present application realizes double function unlocking through different strokes of the release mechanism. The first stroke of the release mechanism is used to unlock the rotation of the backrest assembly relative to the seat assembly, so as to adjust the backrest angle of the seat. The second stroke is used to unlock the rotation of the seat assembly relative to the mounting seat, so as to realize the folding of the seat. The design significantly simplifies the user operation, and the user does not need to find and operate two independent buttons respectively, thereby improving the convenience and efficiency of use. In addition, by reducing the number of buttons, the maintenance difficulty of the stroller is reduced, and the competitiveness and user experience of the product are further improved. Not only solves the problem of complicated operation in the prior art, but also brings significant improvement in functionality and practicality of the stroller.

[0039] Further, as a preferred embodiment of the present scheme but not limited, a two-way lock mechanism 5 is arranged on the release mechanism 4 and used to limit or release the limitation of the movement of the release mechanism 4 to the second stroke 42.

[0040] In the embodiment, the additional two-way lock mechanism 5 provides additional safety protection for the release mechanism 4, which is mainly used to limit or release the movement of the release mechanism 4 to the second stroke 42, that is, to control the folding action of the seat assembly 1 relative to the mounting seat 3. The safety of the stroller is improved, which prevents children from accidentally folding the seat or accidentally folding the stroller due to too large angle during adjusting the backrest angle, and other use scenarios. When the seat folding operation is needed, the user must first release the limitation of the two-way lock, and then realize the folding through the second stroke 42 of the release mechanism 4. The two-way lock mechanism 5 can adopt an independent button or switch, and the user needs to press the button or switch state to release the limitation of the second stroke 42 of the release mechanism 4. A rotatable lever can also be used, and the user needs to rotate the lever to a specific position to release the lock. The two embodiments not only provide flexibility in operation, but also further enhance the safety performance of the stroller, because they require the user to perform explicit and conscious operation to release the lock, thereby reducing the possibility of misoperation. Not only solves the possible safety problem in the prior art, but also provides a more convenient and safe operation experience for the user.

[0041] Further, as a preferred embodiment of the present application but not as a limitation, the release mechanism 4 comprises an unlocking member 43, a gear 44 coaxially connected with the seat assembly 1, a driving ring 46 rotationally connected with the unlocking member 43 through a pull wire 45 and coaxially arranged with the gear 44, a lock pin 47 obliquely engaged with the driving ring 46 and inserted into the gear 44 at one end, a plurality of positioning holes 441 are arranged on the gear 44 for the lock pin 47 to be inserted into so as to keep the backrest assembly 2 at a current angle and limit the rotation of the backrest assembly 2 relative to the seat assembly 1, a first elastic member 48 arranged in the backrest assembly 2 for driving the lock pin 47 to be inserted into the positioning hole 441, and a second elastic member 49 for driving the driving ring 46 to reset.

[0042] In the present embodiment, when the unlocking member 43 is actuated along the first stroke 41, the driving ring 46 is rotated, the lock pin 47 is pushed out of the positioning hole 441, the rotation of the backrest assembly 2 relative to the seat assembly 1 is released, and the first elastic member 48 and the second elastic member 49 are compressed to drive the driving ring 46 to reset and drive the lock pin 47 to be inserted into the positioning hole 441 so as to keep the backrest assembly 2 at a current angle and limit the rotation of the backrest assembly 2 relative to the seat assembly 1. The first elastic member and the second elastic member are springs.

[0043] Further, as a preferred embodiment of the present application but not as a limitation, the release mechanism 4 further comprises a locking tooth member 410, the gear 44 is provided with a first tooth groove 442 for the locking tooth member 410 to be partially embedded, the mounting base 3 is provided with a second tooth groove 31 for the locking tooth member 410 to be partially embedded, the locking tooth member 410 is provided with a top block 443 obliquely engaged with the driving ring 46, and the locking tooth member 410 is simultaneously embedded in the first tooth groove 442 and the second tooth groove 31 to limit the rotation of the seat assembly 1 relative to the mounting base 3.

[0044] Further, as a preferred embodiment of the present application but not as a limitation, when the unlocking member 43 is actuated along the second stroke 42, the driving ring 46 is continuously rotated, the locking tooth member 410 is pushed out of the first tooth groove 442 and sinks into the second tooth groove 31, the rotation of the seat assembly 1 relative to the mounting base 3 is released, and the first elastic member 48 and the second elastic member 49 are compressed. When unfolded, the first elastic member 48 and the second elastic member 49 drive the driving ring 46 to reset and drive the locking tooth member 410 to be partially inserted into the first tooth groove 442 to limit the rotation of the seat assembly 1 relative to the mounting base 3.

[0045] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes an armrest assembly 6 hinged to the seat assembly 1, and an unlocking mechanism 7 for restricting the armrest assembly 6 from rotating relative to the seat assembly 1 or for simultaneously releasing the restriction on the rotation of the armrest assembly 6 relative to the seat assembly 1 when the backrest assembly 2 rotates.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the unlocking mechanism 7 includes a locking block 71 disposed on the seat assembly 1, a guide block 72 disposed on the backrest assembly 2 and obliquely cooperating with the locking block 71, and a limiting groove 61 disposed on the armrest assembly 6 and into which the guide block 72 is inserted to restrict the rotation of the armrest assembly 6 relative to the seat assembly 1. A third elastic member 73 is provided between the locking block 71 and the seat assembly 1 to drive the locking block 71 into the limiting groove 61. When the backrest assembly 2 folds forward relative to the seat assembly 1, the guide block 72 drives the locking block 71 to withdraw from the limiting groove 61 to release the restriction on the rotation of the armrest assembly 6 relative to the seat assembly 1.

[0047] In this embodiment, the user operation steps are simplified: when the backrest assembly 2 is folded forward, the unlocking mechanism 7 automatically drives the locking block 71 to pull away from the limiting groove 61 of the armrest assembly 6 through the cooperation of the guide block 72 and the inclined plate of the locking block 71, thereby simultaneously releasing the rotation restriction of the armrest assembly 6. The armrest assembly 6 automatically falls under its own gravity, without the need for the user to perform additional armrest unlocking steps. Combined with the elastic reset function of the third elastic element 73, such as a spring, the armrest assembly 6 can be automatically kept in position when the stroller is unfolded and the armrest assembly returns to its original position.

[0048] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the gear 44 is circumferentially arranged around the locking gear 410, the drive ring 46 is circumferentially arranged around the gear 44, and the top block 443 extends outward from the gear 44 to the drive ring 46.

[0049] In this embodiment, the dual advantages of compact spatial layout and efficient transmission are achieved. The concentric nesting of the gear and the drive ring significantly reduces the overall volume of the unlocking mechanism. At the same time, the top block, as the transmission medium between the gear and the drive ring, ensures that the top block accurately pushes the locking teeth to complete the unlocking action when the drive ring rotates, thus improving the reliability of the mechanical transmission. When the drive ring rotates, the wedge engagement between the top block and the locking teeth converts the rotational motion into linear displacement to control the engagement or disengagement of the locking teeth.

[0050] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the drive ring 46 is provided with a clearance groove 461 for the top block 443 to be embedded and corresponding to the first stroke 41.

[0051] In this embodiment, by setting the clearance groove 461, when the backrest assembly 2 is adjusted in angle, the top block 443 can be accurately embedded in the clearance groove 461 of the drive ring 46, thereby avoiding interference from the second stroke of the release mechanism during the adjustment process, and ensuring that the angle adjustment of the backrest assembly 2 is more accurate and stable.

[0052] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the double-locking mechanism 5 includes a movable member 51 slidably disposed within the unlocking member 43, a limiting stop 52 hinged to the unlocking member 43 and abutting against the movable member 51, a double-locking key 53 obliquely engaged with the movable member 51 and partially exposed outside the unlocking member 43, and a fourth elastic member 54 disposed within the unlocking member 43 and used to drive the double-locking key 53 to protrude outward from the unlocking member 43. When the release mechanism 4 moves along the first stroke 41, the movable member 51 rotates to abut against the limiting stop 52 to restrict the release mechanism 4 from continuing to move along the second stroke 42, presses down the double-locking key 53, and pushes the movable member 51 away from the limiting stop 52 to release the restriction on the release mechanism 4 from continuing to move along the second stroke 42.

[0053] In this embodiment, the user must actively trigger the two locking buttons to release the second travel restriction, effectively preventing the risk of accidental seat folding due to misoperation. When the user adjusts the backrest angle by simply moving the unlocking mechanism along the first travel, the movable part is driven to rotate and abut against the limiting stop, forming a rigid limit on the release mechanism's continued movement along the second travel. When the seat needs to be unlocked, the user must first press down the two locking buttons, which, through the wedge action, push the movable part away from the blocking path of the limiting stop. At this time, the fourth elastic element is compressed, and the two locking buttons partially retract to release the movement space of the limiting stop, allowing the release mechanism to continue moving along the second travel. This design significantly improves the safety of the stroller's folding action through mandatory step-by-step verification of the operating logic.

[0054] The working principle of this embodiment is as follows:

[0055] This application discloses a folding stroller with a dual-release mechanism. The mechanism achieves dual-function unlocking through different travels. The first travel of the release mechanism unlocks the rotation of the backrest assembly relative to the seat assembly, thereby adjusting the seat back angle. The second travel unlocks the rotation of the seat assembly relative to the mounting base, enabling the seat to fold. This design significantly simplifies user operation, eliminating the need for users to separately locate and operate two independent buttons, thus improving ease of use and efficiency. Furthermore, by reducing the number of buttons, the maintenance difficulty of the stroller is lowered, further enhancing the product's competitiveness and user experience. It not only solves the problem of cumbersome operation in existing technologies but also significantly improves the functionality and practicality of the stroller.

[0056] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A folding stroller with a dual-locking mechanism, characterized in that, It includes a seat assembly (1), a backrest assembly (2) hinged to the seat assembly (1), a mounting base (3) hinged to the backrest assembly (2) and used for connecting to the vehicle frame, and a release mechanism (4) provided on the backrest assembly (2), the release mechanism (4) having a first stroke (41) for unlocking the backrest assembly (2) from rotating relative to the seat assembly (1) and a second stroke (42) for unlocking the seat assembly (1) from rotating relative to the mounting base (3).

2. A folding stroller with a dual release mechanism according to claim 1, characterized in that, It also includes a double locking mechanism (5) disposed on the release mechanism (4) and used to restrict or release the movement of the release mechanism (4) to the second stroke (42).

3. A folding stroller with a dual release mechanism according to claim 2, characterized in that, The unlocking mechanism (4) includes an unlocking component (43), a gear (44) coaxially connected to the seat assembly (1), a drive ring (46) rotatably connected to the unlocking component (43) via a pull wire (45) and coaxially arranged with the gear (44), and a locking pin (47) obliquely engaged with the drive ring (46) and inserted into the gear (44) at one end. The gear (44) is provided with a plurality of positioning holes (441) for the locking pin (47) to be inserted to hold the backrest assembly (2) at the current angle and restrict the rotation of the backrest assembly (2) relative to the seat assembly (1). The backrest assembly (2) is provided with a first elastic element (48) for driving the locking pin (47) to be inserted into the positioning hole (441), and a second elastic element (49) for driving the drive ring (46) to reset.

4. A folding stroller with a dual release mechanism according to claim 3, characterized in that, The unlocking mechanism (4) further includes a locking tooth (410). The gear (44) is provided with a first tooth groove (442) for the locking tooth (410) to be partially embedded. The mounting base (3) is provided with a second tooth groove (31) for the locking tooth (410) to be partially embedded. The locking tooth (410) is provided with a top block (443) that cooperates with the drive ring (46). The locking tooth (410) is simultaneously embedded in the first tooth groove (442) and the second tooth groove (31) to restrict the seat assembly (1) from rotating relative to the mounting base (3).

5. A folding stroller with a dual release mechanism according to claim 4, characterized in that, When the unlocking member (43) moves along the second stroke (42), it drives the drive ring (46) to continue rotating, pushing the locking tooth (410) out of the first tooth groove (442) and sinking into the second tooth groove (31) to release the restriction on the rotation of the seat assembly (1) relative to the mounting base (3). At the same time, the first elastic member (48) and the second elastic member (49) are compressed. When unfolded, the first elastic member (48) and the second elastic member (49) drive the drive ring (46) to reset and drive the locking tooth (410) to partially insert into the first tooth groove (442) to restrict the rotation of the seat assembly (1) relative to the mounting base (3).

6. A folding stroller with a dual release mechanism according to claim 1, characterized in that, It also includes an armrest assembly (6) hinged to the seat assembly (1), and an unlocking mechanism (7) for releasing the restriction on the armrest assembly (6) relative to the seat assembly (1) or the backrest assembly (2) rotating simultaneously.

7. A folding stroller with a dual release mechanism according to claim 6, characterized in that, The unlocking mechanism (7) includes a locking block (71) on the seat assembly (1), a guide block (72) on the backrest assembly (2) and obliquely cooperating with the locking block (71), and a limiting groove (61) on the armrest assembly (6) into which the guide block (72) is inserted to restrict the rotation of the armrest assembly (6) relative to the seat assembly (1). A third elastic element (73) is provided between the locking block (71) and the seat assembly (1) to drive the locking block (71) to insert into the limiting groove (61). When the backrest assembly (2) folds forward relative to the seat assembly (1), the guide block (72) drives the locking block (71) to withdraw from the limiting groove (61) to release the restriction on the rotation of the armrest assembly (6) relative to the seat assembly (1).

8. A folding stroller with a dual release mechanism according to claim 4, characterized in that, The gear (44) is circumferentially arranged around the locking tooth (410), the drive ring (46) is circumferentially arranged around the gear (44), and the top block (443) extends outward from the gear (44) to the drive ring (46).

9. A folding stroller with a dual release mechanism according to claim 4, characterized in that, The drive ring (46) is provided with a clearance groove (461) for the top block (443) to be embedded and corresponding to the first stroke (41).

10. A folding stroller with a dual release mechanism according to claim 3, characterized in that, The double-locking mechanism (5) includes a movable member (51) slidably disposed within the unlocking member (43), a limiting stop (52) hinged to the unlocking member (43) and abutting against the movable member (51), a double-locking key (53) obliquely engaged with the movable member (51) and partially exposed outside the unlocking member (43), and a fourth elastic member (54) disposed within the unlocking member (43) and used to drive the double-locking key (53) to protrude outward from the unlocking member (43). When the release mechanism (4) moves along the first stroke (41), the movable member (51) rotates to abut against the limiting stop (52) to restrict the release mechanism (4) from continuing to move along the second stroke (42), presses down the double-locking key (53), and pushes the movable member (51) away from the limiting stop (52) to release the restriction on the release mechanism (4) from continuing to move along the second stroke (42).

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