Folding structure of baby stroller

Abstract

The utility model provides a folding structure of a baby stroller, which belongs to the technical field of baby strollers and comprises a rear support, a front support, a lower connecting rod, a lower front pull rod, a lower rear pull rod, a seat, a front armrest, an outer push rod, an upper push rod, a lower push rod and a rear support rod. The rear support is hinged to the front support, the lower rear pull rod, the seat and the lower push rod, the lower front pull rod is hinged to the front support and the lower rear pull rod, the lower rear pull rod is hinged to the rear support and the lower connecting rod, the lower connecting rod is hinged to the rear supporting rod, and the upper push rod is hinged to the lower push rod and the rear supporting rod. The front armrest is respectively hinged with the seat and the lower push rod, the outer push rod is respectively hinged with the upper push rod and the rear support rod, and the two states of forward pushing and reverse pushing are switched through an internal locking mechanism. And the use convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of baby strollers, and in particular relates to a folding structure of a baby stroller. Background Art

[0002] A stroller is a form of transportation designed specifically for infants and young children, primarily used by parents to carry their babies during outdoor activities. Stroller design must not only consider the comfort and safety of the baby, but also the ease of use and portability for parents. With the advancement of technology and improvements in living standards, the functionality and design of strollers have continued to evolve, from simple structures to multifunctional and intelligent products. The main components of a stroller include the frame, seat, wheels, push bar, and brake system. The frame is typically made of metal tubing, offering high strength and durability. The seat can be adjusted to suit the baby's age and size, providing an optimal ride. The wheels are made of wear-resistant materials, ensuring smooth operation on all terrains. The push bar and brake system allow parents to control the stroller's speed and direction, ensuring the baby's safety.

[0003] Traditional stroller folding structures typically utilize a single- or double-point hinge. While this allows for basic folding functionality, it suffers from the following drawbacks in actual use: Traditional folding structures often require the user to operate multiple components simultaneously, making the folding process complex, time-consuming, and labor-intensive. This inconvenience is particularly pronounced in emergency situations, when the stroller needs to be quickly folded for storage or transport. When unfolded, the traditional folding structure, with its fewer hinge points, can result in an unstable overall structure, making it prone to shaking when traveling on uneven surfaces, impacting the infant's riding experience. When locked, the traditional folding structure carries the risk of accidental unlocking, especially on bumpy roads. If the locking mechanism fails, the stroller can collapse suddenly, endangering the infant's safety. Utility Model Content

[0004] In view of this, the present invention provides a folding structure for a baby stroller, which solves the disadvantage that the folding process of traditional baby strollers is relatively complicated, and improves the convenience and safety of use.

[0005] The utility model is achieved in that:

[0006] The utility model provides a folding structure of a baby stroller, which includes a rear bracket, a front bracket, a lower connecting rod, a lower front pull rod, a lower rear pull rod, a seat, a front armrest, an outer push rod, an upper push rod, a lower push rod and a rear support rod, wherein the rear bracket is hinged to the front bracket, the lower rear pull rod, the seat and the lower push rod respectively, the lower front pull rod is hinged to the front bracket and the lower rear pull rod respectively, the lower rear pull rod is hinged to the rear bracket and the lower connecting rod respectively, the lower connecting rod is hinged to the rear support rod, the upper push rod is hinged to the lower push rod and the rear support rod respectively, the front armrest is hinged to the seat and the lower push rod respectively, the outer push rod is hinged to the upper push rod and the rear support rod respectively, and the stroller is switched between two states of forward pushing and reverse pushing by an internal locking mechanism.

[0007] To fold the stroller, first unlock the locking mechanism between the upper and lower push rods. Then, apply backward force to the upper push rod, which in turn moves the rear support rod backward. Because the rear support rod is hinged to the lower link, the force acting on the lower link pushes the lower rear rod downward. This downward movement of the lower rear rod pulls on the lower front rod, causing the front support rod to move backward, ultimately folding the entire stroller. During this process, the hinge points between all components allow them to rotate freely in specific directions, ensuring a smooth and unobstructed folding motion.

[0008] The multiple hinge points allow the stroller to be easily folded, saving storage space and making it easy to carry. The internal locking mechanism of the outer push rod allows for quick switching between forward and reverse pushing, increasing flexibility and convenience.

[0009] On the basis of the above technical solution, the folding structure of a baby stroller of the present invention can also be improved as follows:

[0010] When the vehicle frame is locked, the upper push rod and the lower push rod cooperate with each other to lock.

[0011] Furthermore, after folding and unlocking, the upper push rod moves backward, driving the rear support rod to move backward, thereby driving the lower connecting rod to move backward, and the lower connecting rod drives the lower rear pull rod to move downward, thereby driving the lower front pull rod to move, thereby driving the front bracket to move backward to achieve folding.

[0012] The beneficial effect of adopting the above-mentioned improvement scheme is: through the linkage of the upper push rod, the rear support rod, the lower connecting rod, the lower rear pull rod and the lower front pull rod, the folding process is ensured to be smooth and unobstructed, reducing the resistance and complexity during folding.

[0013] Furthermore, the lower connecting rod is hinged to the lower rear pull rod and hinged to the lower end of the rear support rod for power transmission.

[0014] Furthermore, the upper push rod is hinged to the lower push rod and is also hinged to the rear support rod to form a four-bar linkage.

[0015] Furthermore, when the stroller is pushed forward, the outer push rod is fixed at a certain position by the internal locking mechanism, and the stroller is pushed by the front armrest, and the moving direction of the stroller is consistent with the forward direction of the user.

[0016] Furthermore, when pushing in the reverse direction, the internal locking mechanism of the outer push rod is unlocked, and the position of the outer push rod is adjusted to point in the opposite direction, so that the stroller moves in the opposite direction to the user's forward direction.

[0017] Furthermore, the internal locking mechanism includes a gear rack structure, a ratchet structure or a spring locking structure, which is used to lock when the outer push rod is in a forward pushing state and unlock when it needs to be switched to a reverse pushing state.

[0018] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of the internal locking mechanism ensures the stability of the outer push rod in the forward pushing state, preventing accidental unlocking.

[0019] Compared with the prior art, the folding structure of the baby stroller provided by the present invention has the following beneficial effects:

[0020] 1. Improve folding efficiency and convenience

[0021] Folding process: The multi-point hinge design makes the stroller fold and unfold more smoothly, reducing the difficulty of operation. The user only needs to apply backward force to the upper push rod to complete the entire folding process, which is easy to operate. The linkage system formed by the lower front pull rod, lower rear pull rod and lower connecting rod ensures the coordinated movement of each component and improves folding efficiency. During folding, the hinge points between all components allow them to rotate freely in a specific direction, ensuring smooth and unobstructed folding.

[0022] Deployment process: When you need to unfold the stroller, unlock the locking mechanism between the upper and lower push rods and push the upper push rod forward until it locks together to ensure the stroller is stable. Check that all hinge points are secure and ensure the stroller is fully unfolded. The entire deployment process is quick and easy, without complicated steps.

[0023] Enhance the stability and safety of the overall structure

[0024] Four-bar linkage: The four-bar linkage, consisting of the upper push rod, lower push rod, and rear support rod, enhances the rigidity and stability of the overall structure, ensuring the safety of the stroller during use. Even when driving on uneven ground, the stroller can maintain a stable posture, reducing shaking and improving riding comfort.

[0025] Locking mechanism: The locking mechanism between the upper and lower push rods is well designed to ensure a secure lock in the unfolded state, preventing accidental folding. At the same time, the unlocking mechanism is easy to operate, allowing users to easily unlock and fold;

[0026] Improve flexibility and convenience of use

[0027] Forward and reverse pushing function: The forward and reverse pushing function makes the stroller more versatile in different scenarios;

[0028] Easy to operate: The forward and reverse push can be switched through simple operation, which improves the convenience of use. The unlocking mechanism is well designed, and the user can easily unlock and adjust the position of the push rod for quick switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 Open the state diagram for the folding structure of a baby stroller;

[0031] Figure 2 A diagram of a baby stroller in a folding structure after reversal;

[0032] Figure 3 A diagram of a folding structure of a baby stroller in a folded state;

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0034] 1. Front bracket; 10. Rear bracket; 11. Lower connecting rod; 2. Lower front pull rod; 3. Lower rear pull rod; 4. Seat; 5. Front armrest; 6. Outer push rod; 7. Upper push rod; 8. Lower push rod; 9. Rear support rod. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0036] like Figure 1 、 Figure 2 、 Figure 3As shown, it is a first embodiment of the folding structure of a baby stroller provided by the utility model. In this embodiment, it includes a rear bracket 10, a front bracket 1, a lower connecting rod 11, a lower front pull rod 2, a lower rear pull rod 3, a seat 4, a front armrest 5, an outer push rod 6, an upper push rod 7, a lower push rod 8 and a rear support rod 9. The rear bracket 10 is hinged to the front bracket 1, the lower rear pull rod 3, the seat 4 and the lower push rod 8 respectively, the lower front pull rod 2 is hinged to the front bracket 1 and the lower rear pull rod 3 respectively, the lower rear pull rod 3 is hinged to the rear bracket 10 and the lower connecting rod 11 respectively, the lower connecting rod 11 is hinged to the rear support rod 9, the upper push rod 7 is hinged to the lower push rod 8 and the rear support rod 9 respectively, the front armrest 5 is hinged to the seat 4 and the lower push rod 8 respectively, the outer push rod 6 is hinged to the upper push rod 7 and the rear support rod 9 respectively, and is switched between the forward pushing and reverse pushing states by an internal locking mechanism.

[0037] To unfold the stroller:

[0038] Unlock the locking mechanism between the upper and lower push bars. Push the upper push bar forward until it locks together to stabilize the stroller. Check that all hinge points are secure and ensure the stroller is fully extended.

[0039] Adjusting the seat:

[0040] Adjust the seat back angle and footrest position according to your child's height and body shape to ensure your child sits comfortably.

[0041] Positive promotion:

[0042] Hold the front handle and push the stroller gently to ensure the outer push bar is locked and the indicator light shows forward push mode.

[0043] Reverse promotion:

[0044] Unlock the inner locking mechanism on the outer push rod. Adjust the outer push rod so that it points in the opposite direction and the indicator light shows reverse push mode. Hold the outer push rod and gently push the stroller.

[0045] Folding stroller:

[0046] Unlock the locking mechanism between the upper and lower push rods. Push the upper push rod backward, which moves the rear support rod backward, which in turn moves the lower connecting rod backward. The lower connecting rod pushes the lower rear rod downward, which pulls the lower front rod, ultimately moving the front support rod backward, folding the vehicle. Confirm that all components are folded into place and lock the folded position.

[0047] Among them, in the above technical solution, when the frame is locked, the upper push rod 7 and the lower push rod 8 cooperate with each other to lock.

[0048] Furthermore, in the above technical solution, after folding and unlocking, the upper push rod 7 moves backward, driving the rear support rod 9 to move backward, thereby driving the lower connecting rod 11 to move backward, and the lower connecting rod 11 drives the lower rear pull rod 3 to move downward, thereby driving the lower front pull rod 2 to move, thereby driving the front bracket 1 to move backward to achieve folding.

[0049] Furthermore, in the above technical solution, the lower connecting rod 11 is hinged to the lower rear pull rod 3 and hinged to the lower end of the rear support rod 9 for power transmission.

[0050] Furthermore, in the above technical solution, the upper push rod 7 is hinged to the lower push rod 8 and is also hinged to the rear support rod 9 to form a four-bar linkage.

[0051] Furthermore, in the above technical solution, when pushing forward, the outer push rod 6 is fixed at a certain position by the internal locking mechanism, and the baby stroller is pushed through the front armrest 5, and the moving direction of the baby stroller is consistent with the forward direction of the user.

[0052] Forward Push: When the stroller is in the forward push position, the outer push rod is fixed in place by the internal locking mechanism, ensuring the stability of the stroller. At this time, the user can push the stroller by holding the front handle, and the stroller moves in the same direction as the user.

[0053] Furthermore, in the above technical solution, when pushing in the reverse direction, the internal locking mechanism of the outer push rod 6 is unlocked, and the position of the outer push rod 6 is adjusted to point in the opposite direction, so that the moving direction of the baby stroller is opposite to the forward direction of the user.

[0054] Reverse Push: To switch the stroller from forward to reverse push, the user first unlocks the internal locking mechanism on the outer push rod. Then, by adjusting the outer push rod so that it points in the opposite direction, the user can now push the stroller while holding the outer push rod, with the stroller moving in the opposite direction of the user's forward direction.

[0055] Furthermore, in the above technical solution, the internal locking mechanism includes a gear rack structure, a ratchet structure or a spring locking structure, which is used to lock the outer push rod 6 when it is in the forward pushing state and unlock it when it needs to be switched to the reverse pushing state.

[0056] Specific implementation of the gear rack structure:

[0057] Structural composition: The internal locking mechanism consists of a gear and a rack that meshes with it. The gear is installed on the outer push rod, and the rack is installed on the rear support rod or the upper push rod.

[0058] When the push rod is in the forward pushing position, the gear and rack mesh together to lock the position of the push rod. When it is necessary to switch to the reverse pushing position, the gear and rack are separated manually or mechanically to release the lock.

[0059] Specific implementation of ratchet structure:

[0060] Structural composition: The internal locking mechanism consists of a ratchet and a pawl that cooperates with it. The ratchet is installed on the outer push rod, and the pawl is installed on the rear support rod or the upper push rod.

[0061] When the outer push rod is in the forward pushing position, the pawl is engaged in the groove of the ratchet wheel, locking the position of the outer push rod. When it is necessary to switch to the reverse pushing position, the pawl is disengaged from the ratchet wheel manually or mechanically to release the lock.

[0062] Specific implementation of the spring locking structure:

[0063] Structural composition: The internal locking mechanism consists of a spring and a lock tongue that cooperates with it. The spring is installed inside the outer push rod, and the lock tongue is installed on the rear support rod or the upper push rod.

[0064] Working Principle: When the outer push rod is in the forward push position, the spring pushes the lock tongue into the locking hole on the outer push rod, locking the outer push rod in place. To switch to the reverse push position, the lock tongue is manually or mechanically disengaged from the locking hole to release the lock.

[0065] Specifically, the principle of the present utility model is:

[0066] Combined folding structure composition:

[0067] The front and rear supports are connected by multi-point hinges, allowing the entire frame to rotate freely within a certain range. The lower push rod is hinged to the rear support to provide additional support. The seat is hinged to the rear support and the angle can be adjusted as needed. The lower front pull rod is hinged to the front support and to the lower rear pull rod to form a linkage system. The lower connecting rod is hinged to the lower rear pull rod and to the lower end of the rear support rod, serving as a key component for power transmission. The rear support rod is hinged to the lower push rod to provide support for the stroller. The upper push rod is hinged to the lower push rod and also to the rear support rod to form a four-bar linkage, which enhances the rigidity and stability of the overall structure. The front armrest is hinged to the lower push rod and to the seat to provide convenience for the user. The outer push rod is hinged to the rear support rod and the upper push rod, and the internal locking mechanism is used to switch between the two states of forward pushing and reverse pushing;

[0068] Working principle:

[0069] Folding process: When the stroller needs to be folded, first unlock the locking mechanism between the upper and lower push rods. Then, apply a backward force to the upper push rod, which will drive the rear support rod backward. Because the rear support rod is hinged to the lower connecting rod, the lower connecting rod is subjected to a backward force, which in turn pushes the lower rear rod downward. The downward movement of the lower rear rod pulls the lower front rod, causing the front support to move backward, ultimately folding the entire stroller. During this process, the hinge points between all components allow them to rotate freely in a specific direction, ensuring a smooth and unobstructed folding action;

[0070] Deployment process: When you need to unfold the stroller, unlock the locking mechanism between the upper and lower push rods and push the upper push rod forward until it locks together to ensure the stability of the stroller. Check that all hinge points are secure and ensure that the stroller is fully unfolded;

[0071] Forward and reverse implementation functional structure composition:

[0072] The outer push rod is hinged to the rear support rod and the upper push rod, and is equipped with an internal locking mechanism, which can ensure that the outer push rod is locked when it is in the forward pushing state, and can be quickly unlocked when it needs to be switched to the reverse pushing state;

[0073] Working principle:

[0074] Forward Push: When the stroller is in the forward push position, the outer push rod is fixed in a certain position by the internal locking mechanism to ensure the stability of the stroller. At this time, the user can push the stroller by holding the front armrest, and the direction of movement of the stroller is consistent with the user's forward direction;

[0075] Reverse Push: To switch the stroller from forward to reverse push, the user first unlocks the internal locking mechanism on the outer push rod. Then, by adjusting the outer push rod so that it points in the opposite direction, the user can now push the stroller while holding the outer push rod, with the stroller moving in the opposite direction of the user's forward direction.

Claims

1. A folding structure of a baby stroller, characterized in that: The invention comprises a rear support (10), a front support (1), a lower connecting rod (11), a lower front pull rod (2), a lower rear pull rod (3), a seat (4), a front armrest (5), an outer push rod (6), an upper push rod (7), a lower push rod (8) and a rear support rod (9), wherein the rear support (10) is respectively hinged to the front support (1), the lower rear pull rod (3), the seat (4) and the lower push rod (8), the lower front pull rod (2) is respectively hinged to the front support (1) and the lower rear pull rod (3), and the lower The rear pull rod (3) is hinged to the rear bracket (10) and the lower connecting rod (11), the lower connecting rod (11) is hinged to the rear support rod (9), the upper push rod (7) is hinged to the lower push rod (8) and the rear support rod (9), the front armrest (5) is hinged to the seat (4) and the lower push rod (8), the outer push rod (6) is hinged to the upper push rod (7) and the rear support rod (9), and the two states of forward pushing and reverse pushing are switched by an internal locking mechanism.

2. The folding structure of a baby stroller according to claim 1, characterized in that: When the vehicle frame is locked, the upper push rod (7) and the lower push rod (8) cooperate with each other to lock.

3. The folding structure of a baby stroller according to claim 2, characterized in that: After folding and unlocking, the upper push rod (7) moves backward, driving the rear support rod (9) to move backward, thereby driving the lower connecting rod (11) to move backward, and the lower connecting rod (11) drives the lower rear pull rod (3) to move downward, thereby driving the lower front pull rod (2) to move, thereby driving the front bracket (1) to move backward to achieve folding.

4. The folding structure of a baby stroller according to claim 3, characterized in that: The lower connecting rod (11) is hinged to the lower rear pull rod (3) and is also hinged to the lower end of the rear support rod (9) for power transmission.

5. The folding structure of a baby stroller according to claim 4, characterized in that: The upper push rod (7) is hinged to the lower push rod (8) and is also hinged to the rear support rod (9) to form a four-bar linkage.

6. The folding structure of a baby stroller according to claim 5, characterized in that: When pushing forward, the outer push rod (6) is fixed at a certain position by an internal locking mechanism, and the baby stroller is pushed through the front armrest (5), and the moving direction of the baby stroller is consistent with the forward direction of the user.

7. The folding structure of a baby stroller according to claim 6, characterized in that: When pushing in the reverse direction, the internal locking mechanism of the outer push rod (6) is unlocked, and the position of the outer push rod (6) is adjusted so that it points in the opposite direction, and the moving direction of the baby stroller is opposite to the forward direction of the user.

8. The folding structure of a baby stroller according to claim 7, characterized in that: The internal locking mechanism comprises a gear rack structure, a ratchet structure or a spring locking structure, which is used to lock the outer push rod (6) when it is in a forward pushing state and unlock it when it needs to be switched to a reverse pushing state.

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