Frame folding and fixing device and baby carrier
The integrated locking mechanism in the baby carrier joint addresses the issues of unsightly and unsafe exposed hooks, enhancing safety and reducing manufacturing costs by hiding the locking mechanism within the joint.
Patent Information
- Application Number
- JP2025122529
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2021-08-02
- Filing Date
- 2025-07-22
- Publication Date
- 2025-10-07
AI Technical Summary
Existing frame folding fixing hooks in baby carriers are unsightly, increase manufacturing costs, and pose safety risks due to their exposed design.
A frame folding and securing device with integrated first and second locking devices that rotate to lock and unlock the handle and front leg of the baby carrier, hidden within the joint, eliminating the need for separate manufacturing and reducing exposure.
Improves aesthetics and safety while reducing manufacturing complexity and costs by integrating the locking mechanism within the joint, ensuring easy operation and preventing accidental unfolding.
Smart Images

Figure 2025148582000001_ABST
Abstract
Description
[Technical Field]
[0001] SUMMARY The present disclosure relates to a frame folding (retracting) securing device and a baby carrier including the frame folding securing device. [Background technology]
[0002] Baby carriers can reduce fatigue caused by carrying a baby for a long time and improve the comfort of people's lives. The main structure of a baby carrier usually includes a handle (grip) portion and a front leg portion. To conveniently store and carry the baby carrier when it is not in use, the handle portion and the front leg portion can usually be folded relative to each other to reduce the volume occupied by the baby carrier.
[0003] Specifically, referring to Figure 10, which is a schematic diagram showing a frame folding fixing hook of the related art, a joint 30' is disposed between the handle 10' and the front leg 20'. The location of the joint 30' allows the handle 10' and the front leg 20' to be folded or unfolded (extended) relative to one another, conveniently stored and carried when the baby carrier is temporarily not in use, and then unfolded again for use.
[0004] According to the related art shown in Fig. 10, a frame folding fixing hook 40' is provided to lock the baby carrier in a folded state and prevent it from being unfolded (unfolded) undesirably. One end of the frame folding fixing hook 40' is fixedly disposed, for example, on the front leg 30', and the other end is hook-shaped. When the handle 10' and the front leg 20' are in the folded state, the other end of the frame folding fixing hook 40' is hooked, for example, on the handle 10', locking the baby carrier in a folded state. When it is necessary to unfold the handle 10' and the front leg 20' relative to each other again, the other end of the hook of the frame folding fixing hook 40' must be manually released to release the folded locked state of the baby carrier (i.e., unlock it).
[0005] However, the above-described frame folding fixing hooks 40' in the related art have the following problems: The frame folding fixing hooks 40' exposed on the outside of the frame are unsightly and must be manufactured separately before being connected to the baby carrier, which increases the manufacturing process and manufacturing costs. Furthermore, when the baby carrier is unfolded, the exposed frame folding fixing hooks 40' naturally hang down on the handle 10' or front leg 20', making it easy for the user to accidentally get injured and reducing the safety of using the baby carrier. Summary of the Invention
[0006] In view of the above, the object of the present disclosure is to provide a frame folding and fixing device and a baby carrier including the frame folding and fixing device, specifically to provide a frame folding and fixing device that can overall improve the aesthetics and safety of use of the baby carrier, and can effectively reduce the technical process and manufacturing costs.
[0007] Therefore, according to one aspect of the present disclosure, there is provided a frame folding and securing device including a first locking device and a second locking device, wherein the first locking device is provided on a front leg of a frame and the second locking device is provided on a handle of the frame, and when the front leg of the frame is folded relative to the handle of the frame, the first locking device and the second locking device rotate toward each other to lock, and when the front leg of the frame is unfolded relative to the handle of the frame, the first locking device and the second locking device rotate away from each other to unlock.
[0008] In one embodiment, the first locking device includes a base and a boss, the boss being disposed on the base and positioned on a side of the base.
[0009] In one embodiment, the second locking device includes an arc rib and a locking protrusion, and the arc rib is fitted into the base and can slide on the base.
[0010] In one embodiment, when the front leg of the frame is folded against the handle of the frame, the arc rib slides on the base and the locking protrusion and the boss are locked, and when the front leg of the frame is unfolded against the handle of the frame, the arc rib slides back within the base and the locking protrusion is unlocked from the boss.
[0011] In one embodiment, the arc rib extends an arc length corresponding to the particular angle through which the handle must rotate relative to the front leg when fully folded.
[0012] In one embodiment, the first locking device includes a boss and a stopper, and the boss and the stopper are disposed opposite each other.
[0013] In one embodiment, the second locking device includes an arc groove and a locking protrusion, the locking protrusion is disposed within the arc groove and protrudes into the arc groove, and the boss and the stopper are fitted into the arc groove.
[0014] In one embodiment, when the front leg of the frame is folded onto the handle of the frame, the boss and the stopper slide within the arc groove and the locking protrusion is locked with the boss, and when the front leg of the frame is unfolded onto the handle of the frame, the boss and the stopper slide back within the arc groove and the locking protrusion is unlocked from the boss.
[0015] In one embodiment, the arcuate groove extends an arc length corresponding to the particular angle that the handle must rotate relative to the front leg when fully folded.
[0016] According to another aspect of the present disclosure, a baby carrier is provided, comprising a handle, front legs, a joint between the handle and the front legs, and the above-described frame folding and securing device, the frame folding and securing device being disposed at the joint.
[0017] In one embodiment, the handle is provided with a handle fastener and the front leg is provided with a front leg fastener.
[0018] In one embodiment, the joint includes a first housing, a second housing, and a close cover that covers the first housing and the second housing, the front leg fasteners are connected to the first housing, the first locking device is disposed on the first housing, the handle fasteners are connected to the second housing, and the second locking device is disposed on the second housing.
[0019] In one embodiment, the baby carrier further includes a frame deployment locking member and a resilient member disposed within the joint.
[0020] According to the frame folding locking device and the baby carrier including the frame folding locking device of the present disclosure, the frame folding locking device is hidden in the joints of the baby carrier, thereby improving the aesthetic appearance and safety of the entire baby carrier. Furthermore, the frame folding locking device of the present disclosure has a simple structure and does not need to be manufactured separately and then connected, which effectively reduces technical processes and manufacturing costs. Furthermore, the frame folding locking device of the present disclosure is more convenient to operate. [Brief explanation of the drawings]
[0021] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate embodiments of the present disclosure and are used in conjunction with the following description to explain the concepts of the disclosure.
[0022] In the drawings
[0023] [Figure 1] 1 is a schematic diagram showing a baby carrier of the present disclosure with the handles deployed relative to the front legs.
[0024] [Figure 2] FIG. 2 is an exploded schematic view showing a specific structure of a joint of a baby carrier according to the present disclosure.
[0025] [Figure 3] 1 is a schematic diagram showing the structure of a frame folding and fixing device according to the present disclosure. FIG.
[0026] [Figure 4] 1 is a schematic diagram illustrating a baby carrier according to the present disclosure with the handles deployed relative to the front legs.
[0027] [Figure 4A] FIG. 5 is an enlarged view showing a detail of a portion A in FIG.
[0028] [Figure 5] 1 is a schematic diagram illustrating a baby carrier of the present disclosure with the handle in a semi-folded position relative to the front legs.
[0029] [Figure 5A] FIG. 6 is an enlarged view showing a detail of a portion A in FIG. 5.
[0030] [Figure 6] 1 is a schematic diagram illustrating a baby carrier of the present disclosure with the handle fully folded relative to the front legs. FIG.
[0031] [Figure 6A] FIG. 7 is an enlarged view showing a detail of a portion A in FIG. 6.
[0032] [Figure 7] 1 is a schematic diagram illustrating a baby carrier of the present disclosure with the handles re-deployed relative to the front legs. FIG.
[0033] [Figure 7A] FIG. 8 is an enlarged view showing a detail of a portion A in FIG. 7.
[0034] [Figure 8-9] 8A and 8B are schematic diagrams illustrating a frame folding and fastening device according to another embodiment of the present disclosure, with FIG. 8 illustrating the frame folding and fastening device in an unlocked state and FIG. 9 illustrating the frame folding and fastening device in a locked state.
[0035] [Figure 10] 1 is a schematic diagram showing a frame folding fixing hook of the related art; [Explanation of symbols]
[0036] 1. Baby carrier 10 Handle 12 Handle Zipper 20 Front Leg 22 Front leg zipper 30 joints 32 First Housing 34 Second Housing 36 Close Cover 40 Frame folding fixing device 42 First locking device 421 Base 422 Boss 423 Stopper 44 Second locking device 441 Arclib 442 Locking protrusion 443 Arc groove 50 Frame deployment lock member 60 Elastic member DETAILED DESCRIPTION OF THE INVENTION
[0037] Exemplary embodiments will now be described in detail with reference to the accompanying drawings. While the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the accompanying drawings. However, the present disclosure should not be construed as limited to the embodiments set forth herein; instead, the present disclosure covers all modifications, equivalents, and alternatives falling within the spirit and scope of the embodiments.
[0038] The frame folding locking device of the present disclosure can be used in combination with various types of baby carriers, such as strollers, children's tricycles, children's bicycles, children's balance bikes, fun handle bikes, etc., to lock the folded state of various baby carriers. For convenience of explanation, the following detailed description will mainly refer to examples of baby carriers in the form of strollers.
[0039] Hereinafter, a frame folding and securing device 40 and a baby carrier 1 including the frame folding and securing device 40 according to the present disclosure will be described in detail with reference to the accompanying drawings.
[0040] FIG. 1 is a schematic diagram showing a baby carrier 1 according to the present disclosure, with the handle 10 deployed relative to the front legs 20. According to the embodiment shown in this figure, the baby carrier 1 includes the handle 10, the front legs 20, and a joint 30 between the handle 10 and the front legs 20. Furthermore, as shown in FIG. 1, the handle 10 is provided with a handle fastener 12, and the front legs 20 are provided with a front leg fastener 22. FIG. 2 is an exploded schematic diagram showing the specific structure of the joint 30 of the baby carrier 1 according to the present disclosure, with the joint 30 including a first housing 32, a second housing 34, and a close cover 36 for covering the first housing 32 and the second housing 34. In the illustrated embodiment, the front leg fastener 22 is provided on the first housing 32, and the handle fastener 12 is provided on the second housing 34. Furthermore, a frame deployment lock member 50 and a resilient member 60 are also provided on the joint 30.
[0041] Next, a frame folding and securing device 40 according to the present disclosure will be described with reference to FIGS. 3 and 4. FIG. 3 is a schematic diagram showing the structure of the frame folding and securing device 40 according to the present disclosure. The frame folding and securing device 40 is disposed in the joint 30 and includes a first locking device 42 provided in the frame front leg 20 and a second locking device 44 provided in the frame handle 10. Specifically, the first locking device 42 is disposed in the first housing 32 of the joint 30 connected to the front leg fastener 22, and the second locking device 44 is disposed in the second housing 34 of the joint 30 connected to the handle fastener 12. When the frame front leg 20 is folded relative to the frame handle 10, the first locking device 42 and the second locking device 44 can be locked after rotating toward each other. When the frame front leg 20 is unfolded relative to the frame handle 10, the first locking device 42 and the second locking device 44 are unlocked and rotate away from each other.
[0042] Next, specific operations of the first locking device 42 and the second locking device 44 while the front leg 20 is folded relative to the handle 10 will be described in detail with reference to Figures 4 to 6. Figure 4 is a schematic diagram showing a baby carrier 1 according to the present disclosure in a state in which the handle 10 is not folded relative to the front leg 20. Figure 5 is a schematic diagram showing a baby carrier 1 according to the present disclosure in a state in which the handle 10 is semi-folded relative to the front leg 20. Figure 6 is a schematic diagram showing a baby carrier 1 according to the present disclosure in a state in which the handle 10 is fully folded relative to the front leg 20.
[0043] Referring to FIG. 4A, which is an enlarged view showing a detail of portion A in FIG. 4, when the handle 10 is in an unfolded state relative to the front leg 20, according to the illustrated embodiment, the first locking device 42 includes a base 421 and a boss 422. The boss 422 is the base 421 and is provided on a side surface of the base 421. The second locking device 44 includes an arc rib 441 and a locking protrusion 442. The arc rib 441 is fitted onto the base 421 of the first locking device 42 and can slide on the base 421. When the handle 10 in FIG. 4 is in an unfolded state relative to the front leg 20, the boss 422 of the first locking device 42 is spaced apart from the locking protrusion 442 of the second locking device 44 in the circumferential direction. 5A, which is an enlarged view showing a detail of part A in FIG. 5, when the handle 10 in FIG. 5 is in a semi-folded state relative to the front leg 20, the arc rib 441 slides on the base 421 in the clockwise direction indicated by the arrow in FIG. 5A, and the locking protrusion 442 gradually approaches the boss 422 in the circumferential direction. Furthermore, when the handle 10 in FIG. 6 is in a fully folded state relative to the front leg 20, as shown in FIG. 6A, which is an enlarged view showing a detail of part A in FIG. 6, the arc rib 441 drives the locking protrusion 442 to pass through the boss 422, and then continues to slide in the clockwise direction to be locked with the boss 422. Therefore, when the handle 10 and the front leg 20 are in a fully folded state, the above-mentioned fully folded state is locked by the lock between the locking protrusion 442 and the boss 422, and undesired unfolding (opening) of the fully folded state is prevented.
[0044] 7 and 7A show a case where the baby carrier 1 needs to be unfolded again for continued use. Fig. 7 is a schematic diagram showing the baby carrier 1 in the present disclosure with the handle 10 in a state of being unfolded again relative to the front leg 20, and Fig. 7A is an enlarged view showing a detail of part A in Fig. 7. At this time, the user can forcefully lift the handle 10 upward so that the arc rib 441 of the second locking device 44 slides in the counterclockwise direction indicated by the arrow in Fig. 7A and the locking protrusion 442 passes through the boss 422 in the counterclockwise direction accordingly, after which the handle 10 is unlocked or released from the fully folded state, and the user can conveniently unfold the handle 10 relative to the front leg 20.
[0045] The handle 10 needs to rotate a specific angle when the handle is fully folded relative to the front leg 20. In an embodiment, the handle needs to rotate approximately 90 to 180 degrees, preferably approximately 100 to 120 degrees, and more preferably approximately 103 to 110 degrees. Thus, according to the preferred embodiment shown in this figure, the arc rib 441 extends an arc length corresponding to the specific angle through which the handle 10 needs to rotate relative to the front leg 20 when fully folded, and fills the distance traveled by the handle 10 relative to the front leg 20 during full folding. For example, the arc length of the arc rib can range from approximately one-quarter to one-half of the circumference.
[0046] Next, a frame folding and fixing device 40 according to another embodiment of the present disclosure will be described in detail with reference to Figures 8 and 9. Figures 8 and 9 are schematic views showing a frame folding and fixing device 40 according to another embodiment of the present disclosure, with Figure 8 showing the frame folding and fixing device 40 in an unlocked state and Figure 9 showing the frame folding and fixing device 40 in a locked state. Differences between the frame folding and fixing device 40 according to this embodiment and the first embodiment will be mainly described, and similar content will be omitted.
[0047] The first locking device 42 of the frame folding and fixing device 40 includes a boss 422 and a stopper 423, which are arranged opposite to each other. The second locking device 44 of the frame folding and fixing device 40 includes a locking protrusion 442 and an arc-shaped groove 443. The locking protrusion 442 is arranged in the arc-shaped groove 443 and protrudes toward the inside of the arc-shaped groove 443. The boss 422 and stopper 423 of the first locking device 42 described above are fitted into the arc-shaped groove 443. Due to the above structure, in the unlocked state shown in FIG. 8, the locking protrusion 442 is spaced apart from the boss 422 in the circumferential direction. While the handle 10 is gradually folded relative to the front leg 20, the locking protrusion 442 slides clockwise as indicated by the arrow in FIG. 8, and the arc-shaped groove 443 also slides clockwise accordingly, so that the boss 422 and the locking protrusion 442 gradually approach each other in the circumferential direction. After the handle 10 is completely folded relative to the front leg 20, the locking protrusion 442 passes over the boss 422 and is locked with the boss 422. A stopper 423 disposed opposite the boss 422 prevents the locking protrusion 442 from slipping out of the lock with the boss 422. This ensures that the baby carrier 1 remains completely folded and prevents undesired unfolding. When the baby carrier needs to be unfolded again for continued use, the user can forcefully lift the handle so that the locking protrusion 442 slides counterclockwise to release the lock with the boss 442, thereby unfolding the baby carrier.
[0048] Similarly, the arc length of the arc groove 443 also corresponds to the specific angle that the handle 10 needs to rotate relative to the front leg 20 when fully folded, and meets the movement distance of the handle 10 relative to the front leg 20 during the process of fully folding.
[0049] The frame folding locking device 40 of the present disclosure is hidden in the joint 30, improving the overall aesthetics of the baby carrier 1. The hidden frame folding locking device 40 avoids the security risks caused by the exposed placement of the frame folding locking hooks in the related art, greatly improving the safety of the baby carrier when in use. The frame folding locking device 40 of the present disclosure has a simple structure and does not require additional processing and assembly steps, thereby reducing manufacturing costs. Furthermore, the frame folding locking device 40 of the present disclosure has the beneficial effect of being easy to operate.
[0050] Since the features of the present disclosure can be embodied in various forms without departing from the characteristics of the present disclosure, it should also be understood that the above-described embodiments, unless otherwise specified, should not be limited to the details described above, but should be broadly construed as falling within the scope defined by the appended claims. Accordingly, all modifications and variations that fall within the scope and limitations set forth in the claims, or equivalent solutions of such scope and limitations, are intended to be covered by the appended claims.
Claims
1. A frame folding and fixing device including a first locking device and a second locking device, the first locking device is provided on the front leg of the frame; The second locking device is provided on the handle of the frame, and when the front leg of the frame is folded relative to the handle of the frame, the first locking device and the second locking device rotate toward each other to lock, and when the front leg of the frame is unfolded relative to the handle of the frame, the first locking device and the second locking device rotate away from each other to unlock. A frame folding and fixing device characterized by the above.
2. The first locking device includes a base and a boss, the boss being disposed on the base and positioned on a side surface of the base.
2. The frame folding and fixing device according to claim 1.
3. The second locking device includes an arc rib and a locking protrusion, and the arc rib is configured to be fitted into the base and to slide on the base.
3. The frame folding and fixing device according to claim 1 or 2.
4. When the front leg of the frame is folded relative to the handle of the frame, the arc rib slides on the base and the locking protrusion is locked with the boss, and when the front leg of the frame is unfolded relative to the handle of the frame, the arc rib slides back on the base and the locking protrusion and the boss are unlocked.
4. The frame folding and fixing device according to claim 3.
5. The arc rib extends an arc length corresponding to the particular angle through which the handle must rotate relative to the front leg when fully folded.
5. A frame folding and fixing device according to claim 3 or 4.
6. The first locking device includes a boss and a stopper, and the boss and the stopper are disposed opposite to each other.
2. The frame folding and fixing device according to claim 1.
7. The second locking device includes an arc groove and a locking protrusion, the locking protrusion is disposed in the arc groove and protrudes into the arc groove, and the boss and the stopper are fitted into the arc groove.
7. A frame folding and fixing device according to claim 1 or 6.
8. When the front leg of the frame is folded relative to the handle of the frame, the boss and the stopper slide within the arc groove, and the locking protrusion is locked with the boss. When the front leg of the frame is unfolded relative to the handle of the frame, the boss and the stopper slide in the arc groove in the opposite direction, and the locking protrusion is unlocked from the boss.
8. The frame folding and fixing device according to claim 7.
9. The arc groove extends an arc length corresponding to a particular angle that the handle must rotate relative to the front leg when fully folded.
9. A frame folding and fixing device according to claim 7 or 8.
10. A baby carrier comprising: a handle, a front leg, a joint between the handle and the front leg, and a frame folding and fixing device according to any one of claims 1 to 9; The frame folding fixing device is disposed at the joint. A baby carrier that features:
11. The handle is provided with a handle fastener, and the front leg is provided with a front leg fastener.
11. The baby carrier of claim 10.
12. The joint includes a first housing, a second housing, and a close cover that covers the first housing and the second housing, the front leg fastener is connected to the first housing, the first locking device is disposed on the first housing, the handle fastener is connected to the second housing, and the second locking device is disposed on the second housing.
12. The baby carrier of claim 11.
13. The baby carrier further includes a frame deployment locking member and a resilient member disposed within the joint. The baby carrier according to any one of claims 10 to 12.