Unlocking mechanism, adjusting device and stroller

Abstract

This disclosure discloses a release mechanism, an adjustment device, and a stroller. The release mechanism, used to release the relative positioning between a first component and a second component, includes: a locking member movable between a locked position and an release position, wherein in the locked position, the locking member blocks relative movement between the first component and the second component; and a safety lock member movable between a safe locked position and a safe release position, wherein in the safe locked position, the safety lock member blocks relative movement between the first component and the second component, wherein relative movement between the first component and the second component is possible when the locking member is in the release position and the safety lock member is in the safe release position. The release mechanism according to this disclosure reliably maintains or releases the relative positioning between the two components.

Description

Technical Field

[0001] This disclosure relates to a release mechanism, and also to an adjustment device having the release mechanism and a stroller equipped with the release mechanism and the adjustment device. Prior Technology

[0002] Adjusting the backrest angle is a common practice when pushing and using strollers, especially for infants under six months old. The most common usage mode for strollers is the reclining position, where the angle between the backrest and seat can exceed 150 degrees. However, if the stroller is pushed on uneven ground, the impact can cause the backrest to shift, pivoting towards an upright position. This reduces the angle between the backrest and seat, potentially posing a safety hazard and startling the infant. Summary of the Invention

[0003] The purpose of this disclosure is to provide a release mechanism that can reliably maintain or release the relative positioning between two components to reduce the problem of automatic backrest shifting in strollers.

[0004] According to the present disclosure, a release mechanism is proposed for releasing the relative positioning between a first component and a second component. The release mechanism includes: a locking member configured to move between a locked position and a release position, wherein in the locked position, the locking member blocks relative movement between the first component and the second component; and a safety lock member configured to move between a safety locked position and a safety release position, wherein in the safety locked position, the safety lock member blocks relative movement between the first component and the second component. When the locking member is in the release position and the safety lock member is in the safety release position, relative movement between the first component and the second component is possible.

[0005] In one embodiment, the release mechanism includes a safety lock actuating member that can be operated to move the safety lock component to the safety release position.

[0006] In one embodiment, the release mechanism further includes a safety lock traction member, one end of which is connected to the safety lock component, and the other end of which is connected to the safety lock operating member, such that the safety lock operating member drives the safety lock component via the safety lock traction member.

[0007] In one embodiment, the safety lock traction component includes a traction line with traction line ends at both ends. At least one of the safety lock component and the safety lock operating component is provided with a traction component fixing part. The traction component fixing part is capable of accommodating the traction line ends and has a traction component channel on its side wall to allow the traction line connected to the traction line ends to extend out of the traction component fixing part through the traction component channel.

[0008] In one embodiment, the safety lock operating member is movably disposed on the first member and is movable between an operating member locking position and an operating member unlocking position. In the operating member locking position, the safety lock operating member allows the safety lock member to remain in the safety locked position. In the operating member unlocking position, the safety lock operating member drives the safety lock member to the safety unlocking position via the safety lock traction member.

[0009] In one embodiment, the safety lock operating element is a rotary knob rotatably mounted on a fixed base connected to the first component.

[0010] In one embodiment, the fixed base is provided with a movable safety lock retainer, which is configured to hold the rotary knob in the unlocked position of the operating element.

[0011] In one embodiment, the safety lock retainer is provided with a retainer blocking structure, and the rotary knob is provided with a rotary knob blocking structure. The rotary knob blocking structure and the retainer blocking structure can engage to hold the rotary knob in the unlocked position of the operating member. The unlocking mechanism is further provided with a retainer elastic body, which is configured to drive the safety lock retainer against the rotary knob.

[0012] In one embodiment, the rotary knob is further provided with another rotary knob blocking structure, which can engage with the retaining member blocking structure to hold the rotary knob in the operating member locked position.

[0013] In one embodiment, the safety lock actuating element is a push button slidably mounted on the first member, the push button being configured to drive the safety lock member via the safety lock traction element.

[0014] In one embodiment, a push button transmission member is provided between the push button and the safety lock traction member. The push button transmission member is configured to transmit the sliding of the push button in a first direction to the other end of the safety lock traction member that moves in a second direction, wherein the first direction and the second direction are the same or different.

[0015] In one embodiment, the push button is provided with a push button inclined surface, and the push button transmission component is provided with a transmission inclined surface. The push button inclined surface and the transmission inclined surface abut against each other, and the inclination direction of both is inclined to the movement direction of the push button.

[0016] According to another aspect of this disclosure, an adjustment device is proposed for adjusting the position of a first component relative to a second component. The adjustment device is disposed on the first component and includes the release mechanism as described above.

[0017] In one embodiment, the adjustment device includes: a reel configured to rotate for winding a strap, the two ends of which extend outside the adjustment device and are fixed relative to the second member; the effective length of the strap can be increased or decreased to adjust the position of the first member relative to the second member; wherein the reel is provided with a plurality of reel engaging structures, and the safety lock member is provided with a safety lock engaging structure; when the safety lock member moves to the safety locking position, the safety lock engaging structure engages with one of the reel engaging structures to prevent the reel from rotating.

[0018] In one embodiment, the reel is provided with a ratchet or gear that rotates coaxially. When the locking member moves to the locking position, the engaging part of the locking member engages with the teeth on the ratchet or gear to prevent the ratchet or gear from rotating in at least one direction. The plurality of reel engaging structures are internal teeth provided on the ratchet or gear.

[0019] In one embodiment, the adjusting device includes a safety lock elastic element, which is configured to engage the safety lock engagement structure with one of the reel engagement structures.

[0020] According to another aspect of this disclosure, a stroller with a seat is proposed, wherein the stroller is equipped with the aforementioned adjustment device and the aforementioned release mechanism, wherein the release mechanism is used to release the adjustment device, the first component is the backrest of the seat, and the second component is the seat portion of the seat.

[0021] The purpose, features, solutions, and advantages of this disclosure will become more apparent from the following detailed description of the disclosure in conjunction with the accompanying drawings. Simple Explanation of the Diagram

[0022] The drawings are included herein to provide a further understanding of the present disclosure and are incorporated in and form a part of this specification. The drawings illustrate embodiments of the present disclosure and, together with the following description, serve to illustrate the ideas of the present disclosure.

[0023] In the diagram:

[0024] Figures 1A to 1C are schematic diagrams of strollers equipped with adjustment devices.

[0025] Figures 2 and 3 are exploded schematic diagrams of the adjustment device with the release mechanism viewed from two different angles.

[0026] Figures 4 and 5 are schematic diagrams of the appearance of the adjustment device shown in Figure 2 viewed from two different angles.

[0027] Figures 6A and 6B are schematic diagrams of the reel of the adjustment device viewed from two angles.

[0028] Figures 7A and 7B are schematic diagrams of the auxiliary dial of the adjustment device viewed from two angles.

[0029] Figures 8, 9, and 10 are schematic diagrams showing the internal structure of the adjustment device shown in Figure 2 from three different angles.

[0030] Figures 11A and 12A are schematic diagrams showing the locking element of the adjustment device shown in Figure 2 in the locked and unlocked positions, respectively.

[0031] Figures 11B and 12B are schematic diagrams of another embodiment of the adjustment device.

[0032] Figure 13 is a schematic diagram of the appearance of an adjustment device employing a first embodiment of the release mechanism according to the present disclosure.

[0033] Figure 14 is a partially exploded schematic diagram of the adjustment device shown in Figure 13.

[0034] Figure 15 is a schematic diagram of the adjustment device shown in Figure 13 with the first outer cover removed.

[0035] Figure 16 is a schematic diagram of the adjustment device shown in Figure 13 with the first outer cover and safety lock traction component removed.

[0036] Figure 17 is a schematic diagram of the adjustment device shown in Figure 15 in the locked state.

[0037] Figure 18 is a schematic diagram of the adjustment device shown in Figure 15 in the unlocked state.

[0038] Figure 19 is a schematic diagram of the adjustment device shown in Figure 17 with the inner cover and safety lock components removed.

[0039] Figure 20 is a schematic diagram of the safety lock component of the release mechanism shown in Figure 14.

[0040] Figures 21 and 22 show schematic diagrams of the safety lock component shown in Figure 14 in the safety locked position.

[0041] Figures 23 and 24 show schematic diagrams of the safety lock component shown in Figure 14 in the safety release position.

[0042] Figure 25 shows a partial exploded view of the operating components of the release mechanism and the safety lock operating components shown in Figure 13.

[0043] Figure 26 shows a partially exploded schematic diagram of the release mechanism shown in Figure 13 with the fixed base removed.

[0044] Figure 27 is a side view of the adjustment device shown in Figure 26 with the first outer cover and inner cover removed, wherein the safety lock operating element is in the operating element locked position.

[0045] Figure 28 is a side view of the adjustment device shown in Figure 26 with the first outer cover and inner cover removed, wherein the safety lock operating member is in the operating member release position.

[0046] Figure 29 is a frontal schematic diagram of an adjustment device installed on a first member, employing a second embodiment of the release mechanism according to the present disclosure.

[0047] Figure 30 is a schematic diagram of the appearance of an adjustment device employing a second embodiment of the release mechanism according to the present disclosure.

[0048] Figure 31 is a schematic diagram of the adjustment device shown in Figure 30 with the first outer cover removed.

[0049] Figure 32 is a schematic diagram of the safety lock component of the release mechanism shown in Figure 31.

[0050] Figure 33 shows the safety lock operating component of the release mechanism shown in Figure 30 from another angle, where the right safety lock operating component has removed the push button base and is in the operating component locked position.

[0051] Figure 34 shows a schematic diagram of the safety lock component of the release mechanism shown in Figure 31 in the safe locked position.

[0052] Figure 35 shows the safety lock operating component of the release mechanism shown in Figure 30 from another angle, where the right safety lock operating component has removed the push button base and is in the operating component release position.

[0053] Figure 36 shows a schematic diagram of the safety lock component of the release mechanism shown in Figure 31 in the safety release position.

[0054] Figure 37 is a schematic diagram of a box employing the unlocking mechanism according to the present disclosure.

[0055] Figure 38 is a schematic diagram of the box shown in Figure 37 being opened.

[0056] Figure 39 is a schematic diagram of a baby carrier employing the release mechanism according to the present disclosure.

[0057] Figure 40 is a schematic diagram of the adjustment angle of the support component of the baby carrier shown in Figure 39 relative to the carrying component. Implementation

[0058] This disclosure will now be described in detail with reference to the figures.

[0059] It should be understood that in the following description of the embodiments, directional terms such as "up," "down," and "top" are merely illustrative descriptions with reference to the drawings and are not intended to limit the orientation and positional relationships of the relevant objects or components.

[0060] The unlocking mechanism 10 according to this disclosure can be used to release the relative positioning between the first component and the second component, allowing relative movement between them. It should be understood that the unlocking mechanism 10 according to this disclosure can be applied to various fields where the relative positioning between two components needs to be unlocked.

[0061] For example, the first component and the second component may be the backrest 11 and seat 12 of the stroller 1 or the backrest and seat of the car seat (see Figures 1A, 1B, and 1C), or the cover (e.g., door or lid) 31 and the body 32 of the box 3 covering an opening (see Figures 37 and 38), or the support component 42 and the carrying component 41 of the baby carrier 4 (see Figures 39 and 40).

[0062] Furthermore, the first and second components of the unlocking mechanism 10 according to this disclosure can be either one fixed and the other movable, or both movable.

[0063] To more clearly describe the release mechanism 10 according to this disclosure, the following description will first take the application of the release mechanism 10 to a stroller 1 as an example. [ strollers using release mechanisms ] [ ]

[0064] Figures 1A to 1C illustrate a stroller 1. In this embodiment, the first component is the backrest 11 of the stroller 1's seat, and the second component is the seat portion 12. The seat portion 12 is mounted to the stroller 1's frame 13. The movement of the backrest 11 relative to the seat portion 12 is a pivoting movement. For example, the backrest 11 can pivot relative to the seat portion 12 to a contact position, or to an upright position, or to a lying position. In other words, the positions to which the backrest 11 can pivot relative to the seat portion 12 include the contact position, the upright position, the lying position, and other suitable positions between any two of these three positions.

[0065] The position of the backrest 11 relative to the seat 12 is adjusted by an adjustment device 2, which is released by a release mechanism 10 according to the present disclosure.

[0066] In this disclosure, "upright position" refers to a position in which the backrest 11 pivots relative to the seat 12, allowing the infant to sit upright in the stroller, for example, the angle between the backrest 11 and the seat 12 is approximately 90 degrees, but is not limited to this. "Reclining position" refers to a position in which the backrest 11 pivots relative to the seat 12, allowing the infant to lie flat in the stroller, for example, the angle between the backrest 11 and the seat 12 is approximately 180 degrees, but is not limited to this. It should be understood that in this disclosure, the positions in which the backrest 11 can pivot relative to the seat 12 include the contact position, the upright position, the reclining position, and other suitable positions between these three positions. Here, "suitable position" means a position in which the backrest 11 pivots relative to the seat 12, allowing the infant to sit or lie comfortably in the stroller or allowing the stroller to fulfill certain usage needs, such as folding the seat or stroller.

[0067] In the following description, the case in which the backrest 11 pivots relative to the seat 12 between an upright position and a lying position (including the case of pivoting to an upright position or a lying position) will be used as an example.

[0068] For ease of description, this article defines the direction the seat faces as "front" and the direction the seat backs to as "back". [ Including the adjustment device of the release mechanism ] [ ]

[0069] It should be understood that in the embodiments shown in Figures 1A to 1C, the adjustment device 2 according to this disclosure is used to adjust the pivoting position of the backrest 11 of the stroller seat relative to the seat portion 12. However, this disclosure is not limited thereto. The adjustment device 2 according to this disclosure can also be used to adjust the position between other two components, for example, to adjust the pivoting position of the backrest of another seat (such as a car seat) relative to the seat portion, or to adjust the position of a cover 31 relative to the body 32 (see Figures 37 and 38), or to adjust the position of the support assembly 42 of the baby carrier 4 relative to the carrying assembly 41 (see Figures 39 and 40).

[0070] As shown in Figures 1A to 1C, the adjustment device 2 is located on the rear side of the backrest 11 of the stroller 1. Of course, the adjustment device 2 can also be located in other suitable positions on the stroller 1, as long as it is convenient for the user to operate.

[0071] In the embodiments shown in Figures 2 to 5, the adjusting device 2 may include a first outer cover 21, a second outer cover 22, and an inner cover 23 located between the first outer cover 21 and the second outer cover 22. The first outer cover 21, the second outer cover 22, and the inner cover 23 constitute the housing 20 of the adjusting device 2 (see Figures 4 and 5). However, this disclosure is not limited thereto. In another embodiment, two or all three of the first outer cover 21, the second outer cover 22, and the inner cover 23 may be integrally formed components. In yet another embodiment, the first outer cover 21 may be omitted.

[0072] The adjustment device 2 may also include a reel 24, which is rotatably positioned between the inner cover 23 and the second outer cover 22 for winding a strap 240 (see Figures 1C and 6A) around it. The ends of the strap 240 extend outside the housing 20 (as shown in Figures 1C, 4, and 5) and are fixed to the frame 13 of the stroller 1. Alternatively, the ends of the strap 240 may be fixed to the seat 12 or other parts of the stroller 1, as long as the ends of the strap 240 remain stationary relative to the seat 12.

[0073] It should be noted that the strap 240 shown in the figures is for illustrative purposes only. In the embodiments shown in Figures 6A and 6B, the reel 24 includes a first reel 24A and a second reel 24B in an annular shape. The first reel 24A and the second reel 24B are connected by an intermediate connecting part 24C, forming a circumferentially extending winding groove 241 between the first reel 24A and the second reel 24B. The first reel 24A and the intermediate connecting part 24C together form a mounting hole 242 located within the reel 24. The first reel 24A is also provided with two guide grooves 245 and 245'. The guide grooves 245 and 245' can be symmetrically arranged on the first reel 24A as shown in Figure 6A, or they can be asymmetrically arranged, and their positions can be adjusted according to actual needs.

[0074] The adjusting device 2 may also include a spring 25, as shown in FIG2. The spring 25 is located inside the reel 24, for example, it may be arranged in the mounting hole 242 inside the reel 24 as shown in FIG6A.

[0075] The adjustment device 2 may also include a connector 26 for fixing the adjustment device 2 to the backrest 11. The connector 26 is located on the front side of the backrest plate of the backrest 11, and the second outer cover 22 is located on the rear side of the backrest plate of the backrest 11. As shown in Figures 2 and 3, fasteners, such as screws, can be sequentially inserted through the connector 26, the backrest plate, the second outer cover 22, the inner cover 23, and the first outer cover 21 to fix the adjustment device 2 to the backrest 11.

[0076] In another embodiment, the connecting member 26 may be omitted, and the housing 20 of the adjusting device 2 may be directly fixed to the backrest 11 by fixing members such as screws, thereby reducing the number of parts and optimizing the fixing method.

[0077] In the adjustment device 2, the strap 240 supports the backrest 11 of the stroller 1. When the backrest 11 pivots toward an upright position or a reclining position, the effective length of the strap 240 required to support the backrest 11 (i.e., the length of the strap 240 extending beyond the housing 20 of the adjustment device 2) changes. To keep the strap 240 taut while supporting the backrest 11, the reel 24 winds a portion of the strap 240 around itself and, through its own rotation, winds or unwinds a portion of the strap 240 as needed. As shown in Figures 6A and 6B, the reel 24 has a winding groove 241 on its circumferential side, in which the strap 240 is wound.

[0078] Furthermore, as shown in Figures 8 and 9, the spring 25 is configured to drive the reel 24 to rotate along the winding direction D1. Thus, by means of the elastic force of the spring 25, the reel 24 can be driven to rotate along the winding direction D1, at which time the strap 240 is wound onto the reel 24. On the other hand, when the reel 24 rotates along the unwinding direction D2, which is opposite to the winding direction D1, the spring 25 is tightened, at which time the strap 240 is unwound from the reel 24.

[0079] More specifically, the embodiments shown in Figures 8 and 9 illustrate one arrangement of the spring 25. In this embodiment, the spring 25 is wound and housed in a mounting hole 242 within the reel 24. The first end 251 of the spring 25 engages with the fixing post 231 of the inner cover 23, and the second end 252 engages with a groove 243 on the side wall of the mounting hole 242 of the reel 24. Of course, this disclosure is not limited to this; the spring 25 can be arranged in other commonly used ways, as long as it can drive the reel 24 to rotate.

[0080] As shown in Figures 2, 3 and 10, in order to prevent the spring 25 from dislodging from the mounting hole 242 of the reel 24, an auxiliary disk 27 can be provided on the outside of the mounting hole 242. The auxiliary disk 27 is configured to block the spring 25.

[0081] In addition, the auxiliary disk 27 also serves to assist in winding the strap 240. In the embodiments shown in Figures 7A and 7B, the auxiliary disk 27 includes a body 271 and a first limiting piece 272 and a second limiting piece 273 extending outward from the outer periphery of the body 271. The first limiting piece 272 and the second limiting piece 273 are spaced apart axially to form a limiting channel 274 (see Figure 7A) through which the strap 240 passes. This limiting channel 274 can prevent the strap 240 from slipping off the auxiliary disk 27.

[0082] The strap 240 only wraps around the outer periphery of half of the auxiliary disk 27. Therefore, in the embodiment shown in FIG. 7A, the first limiting piece 272 and the second limiting piece 273 are only disposed at the outer periphery of half of the auxiliary disk 27. It should be understood that the first limiting piece 272 and the second limiting piece 273 can also be disposed on the entire outer periphery of the auxiliary disk 27. Furthermore, although in FIG. 7A and FIG. 7B the first limiting piece 272 and the second limiting piece 273 are circumferentially offset, they can also be circumferentially opposite each other. Moreover, the number of the first limiting piece 272 and the second limiting piece 273 can be set as needed.

[0083] The following describes in detail, with reference to Figures 6A, 7A, and 10, one method in which the strap 240 is wound on the reel 24. In this method, the strap 240 enters the housing 20 of the adjusting device 2 through an opening 234 (see Figure 5) on the circumferential side of the inner cover 23, then enters the placement hole 242 through one of the guide grooves 245 on the reel 24, and then passes through the limiting channel 274 of the auxiliary disc 27 (the auxiliary disc 27 is not shown in Figure 6A), bypassing the portion of the reel 24 with the first limiting piece 272 and the second limiting piece 273, so that the strap 240 passes around the placement hole 242. Subsequently, the strap 240 leaves the placement hole 242 through another guide groove 245' on the reel 24, then winds several turns in the winding groove 241 of the reel 24, and finally extends out of the housing 20 of the adjusting device 2 through another opening on the opposite circumferential side of the inner cover 23.

[0084] By passing the belt 240 through the limiting channel 274 of the auxiliary disk 27, the tension of the belt 240 can be increased, thereby improving the stability of the belt 240 unwinding from the reel 24.

[0085] It should be understood that the way the strap 240 is wound on the reel 24 is not limited to this. In other embodiments of this disclosure, the auxiliary reel 27 may be omitted, so that the portion of the strap 240 passing through the mounting hole 242 is straight, and thus the strap 240 is in a taut state.

[0086] In addition, in the embodiment shown in Figure 6A, only one strap 240 is used. However, in other embodiments, two straps 240 can also be used, and the reel 24 is provided with two winding grooves 241. One end of each strap 240 is fixed in one of the winding grooves 241, and the other end is fixed to the frame 13 of the stroller 1, so that each strap 240 is wound in the corresponding winding groove 241.

[0087] In another embodiment, the adjustment device 2 according to the present disclosure may not be provided with a spring 25, and the strap 240 may be provided as a component with its own elasticity, so that the strap 240 can drive the reel 24 to rotate through its own elasticity.

[0088] The angle between the backrest 11 and the seat 12 is an obtuse angle. When the user adjusts the backrest 11 of the stroller 1 to pivot towards the upright position, the obtuse angle between the backrest 11 and the seat 12 decreases, making the effective length of the strap 240 required to support the backrest 11 shorter. The reel 24 can then tighten the slack strap 240, allowing the spring 25 to drive the reel 24 to rotate in the winding direction D1. When the backrest 11 is pivoted to the upright position, most of the strap 240 is wound on the reel 24, leaving only a small portion extending out of the reel 24 and fixed to the stroller frame 13, preventing the reel 24 from rotating in the winding direction D1.

[0089] When the user pivots the backrest 11 of the stroller 1 toward the lying position, the obtuse angle between the backrest 11 and the seat 12 increases, thus increasing the effective length of the strap 240 required to support the backrest 11. When the backrest 11 is pivoted to the lying position, most of the strap 240 unwinds from the reel 24, leaving only a small portion positioned on the reel 24, preventing the reel 24 from rotating further in the unwinding direction D2 and thus preventing the backrest 11 from rotating further. In addition, during the unwinding process of the strap 240 from the reel 24, it drives the reel 24 to rotate in the unwinding direction D2, thereby tightening the spring 25 positioned inside the reel 24.

[0090] Therefore, by adjusting the effective length of the strap 240, the pivoting position of the backrest 11 relative to the seat 12 can be controlled. Given the same strap 240 length, the rotation angle of the reel 24 during the process of fully unwinding and fully winding the strap 240 is related to the diameter of the reel 24. When the diameter of the reel 24 is larger, the rotation angle is smaller; when the diameter of the reel 24 is smaller, the rotation angle is larger. Thus, the diameter of the reel 24 can be configured according to actual usage requirements. For example, selecting a reel 24 with a smaller diameter can reduce the overall size of the adjustment device 2.

[0091] In order to enable the backrest 11 to stay in an upright position, a lying position, or a suitable position in between, the reel 24 is provided with a coaxially rotating positioning component, and the adjustment device 2 is also provided with a locking component 100 that cooperates with the positioning component.

[0092] In the embodiments shown in Figures 3, 6B, 11A, and 12A, the positioning element is a unidirectional ratchet 244. However, this disclosure is not limited to this; the positioning element may also be a bidirectional gear 246 (see Figures 11B and 12B) or other mechanisms with engagement grooves or engagement protrusions, as long as it can be positioned after engaging with the locking element 100 and can move after disengaging from the locking element 100.

[0093] In the following description, we will take ratchet 244, whose positioning element is unidirectional, as an example.

[0094] In order to make the ratchet 244 rotate coaxially with the reel 24, in the embodiment shown in FIG. 6B, the ratchet 244 is attached to the second disc 24B of the reel 24. However, this disclosure is not limited thereto. For example, instead of providing a separate ratchet 244, the second disc 24B of the reel 24 may be made into a ratchet. Of course, other types of positioning elements may be provided on the reel 24 in the same manner.

[0095] As shown in Figure 11A, the rotation of ratchet 244 along the unwinding direction D2 is selectively blocked by locking member 100, causing reel 24 to be unable to rotate along the unwinding direction D2; however, the rotation of ratchet 244 along the winding direction D1 is not blocked by locking member 100. As shown in Figure 11A, when the rotation of ratchet 244 on reel 24 along the unwinding direction D2 is blocked by locking member 100, reel 24 also cannot rotate along the unwinding direction D2, the adjusting device 2 is in a locked state, and ratchet 244 can only rotate along the winding direction D1, so that backrest 11 can only freely pivot towards the upright position to a suitable position and stay at that suitable position, but cannot pivot towards the lying position.

[0096] As shown in Figure 12A, when the locking member 100 moves to the unlocked position, so that the rotation of the ratchet 244 on the reel 24 along the unwinding direction D2 is no longer blocked by the locking member 100, the adjusting device 2 is in the unlocked state. The ratchet 244 can rotate both along the winding direction D1 and the unwinding direction D2, allowing the backrest 11 to pivot not only towards the upright position but also towards the lying position. After the backrest 11 has pivoted to the appropriate position towards either the upright or lying position, as long as the locking member 100 returns to the locked position shown in Figure 11A, the rotation of the ratchet 244 on the reel 24 along the unwinding direction D2 is blocked again by the locking member 100, and the backrest 11 will remain at the appropriate position. Through the cooperation of the ratchet 244 and the locking member 100, the adjusting device 2 according to this disclosure can achieve one-way locking and one-way unlocking of the pivoting of the backrest 11 towards the lying position.

[0097] It should be understood that the above description is an embodiment in which the rotation of the ratchet 244 along the unwinding direction D2 is selectively blocked by the locking member 100, but this disclosure is not limited thereto.

[0098] In another embodiment (not shown), the ratchet 244 can be reversed. For example, the ratchet 244 is configured such that the engagement direction of the ratchet teeth is opposite to that shown in Figures 11A and 12A, so that rotation along the winding direction D1 is selectively blocked by the locking member 100, but rotation of the ratchet 244 along the unwinding direction D2 is not blocked by the locking member 100. The difference between this embodiment and the embodiments shown in Figures 11A and 12A is that when the rotation of the ratchet 244 on the reel 24 along the winding direction D1 is blocked by the locking member 100, the reel 24 cannot rotate along the winding direction D1, the adjusting device 2 is in a locked state, and the ratchet 244 can only rotate along the unwinding direction D2, so that the backrest 11 can only freely pivot towards the lying position to a suitable position and stay at that suitable position, but cannot pivot towards the upright position. When the locking member 100 moves to the unlocked position, so that the rotation of the ratchet 244 on the reel 24 along the winding direction D1 is no longer blocked by the locking member 100, the adjusting device 2 is in the unlocked state. The ratchet 244 can rotate both along the winding direction D1 and along the unwinding direction D2, so that the backrest 11 can pivot to a suitable position not only towards the upright position but also towards the lying position. After the backrest 11 has pivoted to a suitable position towards the upright or lying position, as long as the locking member 100 is returned to the locked position, the rotation of the ratchet 244 on the reel 24 along the winding direction D1 is blocked again by the locking member 100, and the backrest 11 will remain at the suitable position.

[0099] In another embodiment, the positioning element is a bidirectional positioning gear 246 (see Figures 11B and 12B) or other mechanism with engaging grooves or engaging protrusions, i.e., the positioning element is configured such that rotation in either the winding direction D1 or the unwinding direction D2 is selectively blocked by the locking element 100. This embodiment differs from the embodiment using ratchet 244 in that, when the rotation of the positioning element on the reel 24 is blocked by the locking element 100, as shown in Figure 11B, the reel 24 cannot rotate in either the winding direction D1 or the unwinding direction D2, and the adjusting device 2 is in a locked state. When the locking element 100 moves to the unlocked position so that the rotation of the positioning element on the reel 24 is no longer blocked by the locking element 100, as shown in Figure 12B, the adjusting device 2 is in an unlocked state, and the positioning element can rotate in both the winding direction D1 and the unwinding direction D2, allowing the backrest 11 to pivot not only towards an upright position to a suitable position, but also towards a lying position to a suitable position. After the backrest 11 is pivoted to the appropriate position, either upright or lying down, as long as the locking member 100 is returned to the locked position, as shown in Figure 11B, the rotation of the positioning member on the reel 24 is blocked again by the locking member 100, and the backrest 11 will remain in the appropriate position.

[0100] The locking member 100 is configured to move between a locked position and an unlocked position. In the locked position, the locking member 100 prevents pivoting against the back of 11; in the unlocked position, the locking member 100 does not prevent pivoting against the back of 11.

[0101] In the embodiment shown in the figure, the movement of the locking member 100 is a pivoting motion. However, the movement of the locking member 100 can also be a sliding motion, or a combination of pivoting and sliding motions.

[0102] Specifically, as shown in Figures 11A and 12A, the connecting side 101 of the locking member 100 is pivotally connected to the connecting portion 232 on the inner cover 23, allowing the free side 102 of the locking member 100 to pivot relative to the connecting portion 232. Figures 11A and 12A show schematic diagrams of the locking member 100 in the locked and unlocked positions, respectively. As shown in Figure 11A, when the free side 102 of the locking member 100 pivots to the locked position, the engaging portion 103 of the free side 102 of the locking member 100 engages with the ratchet teeth on the ratchet 244, thereby preventing the ratchet 244 from rotating in the unwinding direction D2. As shown in Figure 12A, when the free side 102 of the locking member 100 pivots to the unlocked position, the engaging portion 103 of the locking member 100 disengages from the ratchet teeth on the ratchet 244, thereby not preventing the ratchet 244 from rotating in the unwinding direction D2.

[0103] Of course, the locking member 100 according to this disclosure is not limited to this. The locking member 100 can also be configured to slide up and down along the slide rail (not shown) on the inner shell 23 so that the engaging part 103 of the locking member 100 can engage or disengage with the ratchet teeth on the ratchet 244. In this case, the movement of the locking member 100 is a sliding movement.

[0104] As shown in Figures 11A and 12A, the adjusting device 2 may include an elastic element 28, which is configured to drive the locking member 100 to a locked position, thereby causing the locking member 100 to tend to block the ratchet 244 from rotating in the unwinding direction D2. In the embodiment shown in Figures 11A and 12A, the elastic element 28 is a torsion spring arranged around the connecting side 101 of the locking member 100, with one end 281 abutting against the inner upper wall of the inner shell 23, and the other end 282 connected to the protrusion 104 in the middle of the locking member 100.

[0105] Of course, the elastic element 28 can also take the form of a tension spring, compression spring, elastic rope or elastic body, as long as it can drive the locking element 100 to the locking position.

[0106] When the positioning element is a unidirectional ratchet 244, when the user adjusts the backrest 11 of the stroller 1 to pivot towards the lying position, the reel 24 will rotate in the unwinding direction D2. However, the locking element 100 tends to block the ratchet 244 and the reel 24 from rotating in the unwinding direction D2 under the elastic force of the elastic element 28. Therefore, the user needs to first operate the locking element 100 to move it to the unlocked position and keep the locking element 100 in the unlocked position (that is, to change the adjustment device 2 from the locked state to the unlocked state and keep it in the unlocked state) before pulling the backrest 11 of the stroller 1 to pivot towards the lying position. [ Release mechanism ] [ ]

[0107] To facilitate user operation, this disclosure proposes a release mechanism 10 for releasing the adjustment device 2 to the release state, thereby releasing the positioning of the backrest 11 and enabling the backrest 11 to pivot.

[0108] The unlocking mechanism 10 can be used to release the relative positioning between the first component 11 and the second component 12. It includes a locking member 100, which is configured to move between a locked position and an unlocked position. In the locked position, the locking member 100 blocks the relative movement between the first component and the second component. In the unlocked position, the locking member 100 does not block the relative movement between the first component and the second component.

[0109] To facilitate operation of the locking member 100 by the user, in one embodiment, the unlocking mechanism 10 may further include an operating member, configured to directly or indirectly drive the locking member 100 to the unlocking position under the action of an external force. Here, "directly" means that the operating member directly contacts and acts on the locking member 100. "Indirectly" means that the operating member does not directly contact the locking member 100, but the force is transmitted between the two through other components.

[0110] In one embodiment, the unlocking mechanism 10 may include a driving member 200, with a first end 201 connected to the locking member 100 and a second end 202 connected to an operating member. The operating member is configured to drive the locking member 100 to the unlocking position via the driving member 200 under the action of an external force. The driving member 200 allows the locking member 100 and the operating member to be separated by a certain distance, thereby allowing for more flexible placement of the operating member.

[0111] Of course, the non-disclosure is not limited to this. In another embodiment, the release mechanism 10 may not include the operating member or the driving member 200, and the user may directly apply external force to the locking member 100 to move the locking member 100 to the release position.

[0112] The operating element can be a pull handle 300 that drives the drive element 200 to move by being pulled (see Figures 2 and 3), or a slide handle 300” that drives the drive element 200 to move by sliding on the fixed base 500 (see Figures 13 to 19).

[0113] For ease of description, the following description will be based on the diagrams and will use the slide handle 300” as an example, the positioning element as a one-way positioning ratchet 244, and the release mechanism 10 as a one-way release mechanism that only releases when the pivoting of the backrest 11 towards the lying position is blocked.

[0114] As shown in Figures 13 to 24, in this embodiment of the unlocking mechanism 10, the driving member 200 is a flexible member. The first end 201 of the driving member 200 is connected to the locking member 100, and the second end 202 of the driving member 200 is connected to the slide handle 300". The slide handle 300 and the driving member 200 can be two independent components or a single integrally formed component. The slide handle 300 drives the driving member 200 to move, thereby driving the locking member 100 to the unlocking position.

[0115] The drive component 200 can be a flexible member capable of withstanding tensile forces, such as webbing, rope, or wire, but is not limited to these.

[0116] In order for the drive member 200 to enter the interior from the outside of the adjusting device 2 to connect with the locking member 100, the drive member 200 can pass through the through hole 233 on the inner cover 23 (see FIG. 14). The through hole 233 on the inner cover 23 is preferably formed at a position corresponding to the locking member 100 so that the drive member 200 can pass through the through hole 233 to connect with the locking member 100.

[0117] In the embodiments shown in Figures 13 to 19, the adjusting device 2 and the fixed base 500 are two separate components. The slide 300” is connected to the flexible drive member 200 and is configured to drive the drive member 200 to move, thereby driving the locking member 100 to the unlocked position by means of the drive member 200, so that the adjusting device 2 is in the unlocked state.

[0118] In the embodiments shown in Figures 13 to 19, the slide handle 300” is slidably disposed on the fixed base 500, which is mounted on the backrest 11 by a fixing pin 600. Furthermore, the slide handle 300” is correspondingly provided with an elongated groove 303” through which the fixing pin 600 passes. The groove 303” slides relative to the fixing pin 600, thus limiting the sliding of the slide handle 300” relative to the fixed base 500 to the range of the groove 303”, thereby preventing the slide handle 300” from detaching from the fixed base 500.

[0119] In the embodiments shown in Figures 13 to 19, a return spring 504 is provided between the fixed base 500 and the slide handle 300”, the return spring 504 being configured to drive the slide handle 300” back to the initial position of the undriven member 200. Although in this embodiment the return spring 504 is a compression spring disposed in the slide groove 303”, this disclosure is not limited thereto; the return spring 504 may be a tension spring, a torsion spring, or other elastic member, and the return spring 504 may be disposed in other suitable positions that can drive the slide handle 300” back to the initial position.

[0120] To facilitate user operation of the slider 300”, in the embodiments shown in Figures 13 to 19, the slider 300” may be designed to have a horizontally extending (i.e., extending in a direction perpendicular to the direction of movement of the slider 300” and away from the back of 11) force-applying part (i.e., operating force-applying part) 304”, which is in the shape of a trigger.

[0121] When the user is about to adjust the angle of the backrest 11 of the stroller 1, they can first hook their finger on the operating part 304” of the sliding handle 300” and apply external force to the operating part 304” to make the sliding handle 300” slide relative to the fixed seat 500. The sliding handle 300” drives the locking part 100 of the adjustment device 2 to move to the unlocked position via the driving member 200. Then the adjustment device 2 is in the unlocked state, and then the backrest 11 is tilted (the backrest 11 is not limited to pivoting). [ Safety lock components of the release mechanism ] [ ]

[0122] In one scenario, if the positioning element on the reel 24 of the adjustment device 2 is a one-way ratchet 244, then when the stroller 1 equipped with this adjustment device 2 travels over uneven or obstructed ground, it will be jolted by the impact force of the ground, and the backrest 11 of the stroller 1 may skip a step. This is because the ratchet 244 and the reel 24 it is on vibrate with the stroller 1. During this process, the rotation of the ratchet 244 along the winding direction D1 is not blocked by the locking element 100, and the spring 25 inside the reel 24 tends to make the ratchet 244 and the reel 24 it is on rotate along the winding direction D1. Therefore, the reel 24 may rotate along the winding direction D1 due to vibration and wind up the strap 240. As a result, the effective length of the strap 240 required to support the backrest 11 becomes shorter, causing the backrest 11 of the stroller 1 to move towards an upright position, resulting in the backrest 11 skipping a step. This may pose a potential safety hazard and frighten the baby.

[0123] The backrest 11 of the stroller 1 may move towards an upright position due to automatic shifting, so that the angle between it and the seat 12 is less than 150 degrees. This is not good for infants aged 0-6 months. Therefore, it is necessary to overcome the problem of the backrest 11 automatically shifting.

[0124] In another scenario, the user may misoperate the lever 300 or slide lever 300, causing the adjustment device 2 to unexpectedly enter the unlocked state, thus posing an unexpected danger.

[0125] To overcome these problems and ensure that the relative positioning between the two components can be reliably maintained or released, the unlocking mechanism 10 according to this disclosure may further include a safety lock member S100, which is configured to move between a safety locked position and a safety unlocking position. In the safety locked position, the safety lock member S100 blocks the relative movement between the first component 11 and the second component 12. When the locking member 100 is in the unlocking position and the safety lock member S100 is in the safety unlocking position, the first component 11 and the second component 12 can move relative to each other.

[0126] In the unlocking mechanism 10 according to this disclosure, the double locking of the locking member 100 and the safety lock member S100 ensures that even if one of them is accidentally unlocked, the other can remain locked, thereby effectively preventing the adjusting device 2 from accidentally becoming unlocked, and thus preventing accidental relative movement between the first member 11 and the second member 12. This avoids the problem of the back (i.e., the first member) 11 tripping or user misoperation.

[0127] Figures 13 to 36 illustrate an embodiment of the release mechanism 10 provided with a locking member 100 and a safety lock member S100. Similar to the working principle of the aforementioned locking member 100, the safety lock member S100 can block or not block the rotation of the reel 24 in the adjusting device 2, thereby blocking or not blocking the relative movement between the first member 11 and the second member 12.

[0128] Specifically, as shown in FIG14, the adjusting device 2 including the unlocking mechanism 10 may include a first outer cover 21, a second outer cover 22, and an inner cover 23 located between the first outer cover 21 and the second outer cover 22. As shown in FIGS. 2 and 3, the adjusting device 2 can be fixed to the first component 11 by using fasteners, such as screws, which sequentially pass through the connector 26, the backing plate against (i.e., the first component) 11, and the through-hole on the second outer cover 22 and are screwed to the inner cover 23 and the first outer cover 21. However, this disclosure is not limited thereto. In another embodiment, two or all three of the first outer cover 21, the second outer cover 22, and the inner cover 23 may be integrally formed components. In yet another embodiment, the first outer cover 21 may be omitted.

[0129] The adjustment device 2 may further include a reel 24 rotatably disposed between the inner cover 23 and the second outer cover 22 for winding a strap 240 (not shown in Figures 13 to 36 for simplicity) onto which the ends of the strap 240 extend beyond the adjustment device 2 and are fixed relative to the second member 12 (e.g., fixed to the frame 13 of the stroller 1, as shown in Figure 1C). As previously described, the reel 24 winds or unwinds a portion of the strap 240 by its own rotation, thereby changing the effective length of the strap 240, and the increase or decrease in the effective length of the strap 240 can adjust the position of the first member 11 relative to the second member 12.

[0130] In order for the safety lock component S100 to block or not block the rotation of the reel 24, as shown in Figures 14, 19, 21 to 24 and 34 and 36, the reel 24 is provided with multiple reel engaging structures 248, and the safety lock component S100 is provided with a safety lock engaging structure S101 (see Figures 20 and 32).

[0131] When the safety lock component S100 moves to the safety lock position, as shown in Figures 21, 23 and 34, the safety lock engagement structure S101 engages with one of the reel engagement structures 248 to prevent the reel 24 from rotating.

[0132] When the safety lock component S100 moves to the safety release position, as shown in Figures 22, 24 and 36, the safety lock engagement structure S101 disengages from the reel engagement structure 248 so as not to obstruct the rotation of the reel 24.

[0133] In the embodiments shown in Figures 14, 19, 21 to 24 and 34 and 36, the reel 24 is provided with a ratchet 244 that rotates coaxially, and the multiple reel engagement structures 248 are internal teeth provided on the ratchet 244.

[0134] Of course, this disclosure is not limited to this.

[0135] A coaxially rotating gear 246 can also be provided on the reel 24 (see Figures 11B and 12B), and multiple reel engagement structures 248 are internal teeth provided on the gear 246.

[0136] In addition, the multiple reel engagement structures 248 can be the teeth of another ratchet or gear that rotates coaxially on the reel 24, or they can be the grooves or protrusions on the reel 24.

[0137] To facilitate the operation of the safety lock component S100, as shown in Figures 14 to 19 and Figures 31, 34 and 36, the adjustment device 2 may be provided with a safety lock elastic element S102, which is configured to apply an elastic force to the safety lock component S100 to drive the safety lock engagement structure S101 to engage with one of the reel engagement structures 248, thereby tending to make the safety lock component S100 block the rotation of the reel 24.

[0138] In the embodiments shown in Figures 14 to 19 and Figures 31, 34 and 36, the safety lock elastic element S102 is a compression spring.

[0139] In order to ensure that the compression spring, which is the elastic element of the safety lock S102, acts on the safety lock component S100 in the direction that drives the safety lock engagement structure S101 to engage with the reel engagement structure 248, the safety lock component S100 may be provided with an elastic element fixing part S103, on which the safety lock elastic element S102 is sleeved, thereby properly positioning the safety lock elastic element S102.

[0140] In the embodiments shown in Figures 14 to 19 and Figure 31, the movement of the safety lock member S100 between the safety locked position and the safety released position is a vertical movement. In order to prevent the safety lock member S100 from deviating, the inner cover 23 is provided with a safety lock guide part 23A to guide the safety lock member S100 to move therein.

[0141] It should be understood that the safety lock guide 23A can also be located on the first outer cover 21 or the second outer cover 22.

[0142] To facilitate operation of the safety lock component S100 by the user, the release mechanism 10 may include a safety lock operating component that can be operated to move the safety lock component S100 to the safety release position.

[0143] Specifically, in the embodiments shown in Figures 13 to 28, the safety lock operating component is a rotary knob S300, and in the embodiments shown in Figures 29 to 36, the safety lock operating component is a push button S300'. Of course, the safety lock operating component can also be other components, as long as it can be operated to drive the safety lock component S100 to the safety release position.

[0144] Safety lock operating components S300 and S300' are movably disposed on the first component 11 and can move between an operating component locking position and an operating component unlocking position. In the operating component locking position, safety lock operating components S300 and S300' allow the safety lock component S100 to remain in the safety locked position. In the operating component unlocking position, safety lock operating components S300 and S300' drive the safety lock component S100 to move to the safety unlocking position.

[0145] It should be understood that the safety lock operating components S300 and S300' can also be installed on the second component 12 or other components.

[0146] In one embodiment, the release mechanism 10 may include a safety lock traction member S200, one end of which is connected to the safety lock component S100, and the other end of which is connected to the safety lock operating components S300 and S300', enabling the safety lock operating components S300 and S300' to drive the safety lock component S100 via the safety lock traction member S200. The safety lock traction member S200 allows the safety lock component S100 and the safety lock operating components S300 and S300' to be separated by a certain distance, thereby allowing for more flexible arrangement of the safety lock operating components S300 and S300'.

[0147] In the embodiments shown in Figures 14 to 28 and Figures 29 to 36, the safety lock traction member S200 includes a traction line S220 and a sheath S210 therein for the traction line S220 to slide.

[0148] It should be understood that the safety lock traction component S200 can be implemented in other forms. For example, the safety lock traction component S200 can use a separate traction line S220 without a sheath S210, or it can use a rod-shaped component, etc.

[0149] The traction line S220 can be a flexible member capable of withstanding tensile forces, such as webbing, rope, or wire, but is not limited to these.

[0150] In one embodiment, there may be at least two sheaths S210, located near both ends of the safety lock traction member S200 and fixed thereto guide the traction direction of the traction line S220.

[0151] It should be understood that the sheath S210 can also be a single tubular component that surrounds most of the traction line S220, with both ends of the tubular component fixed to guide the traction direction of the traction line S220.

[0152] As shown in Figures 14 to 16 and Figure 31, a sheath fixing part 23B can be provided on the inner cover 23 to fix the sheath S210 at one end of the safety lock traction member S200 connected to the safety lock member S100.

[0153] If necessary, a channel for the traction line S220 to pass through can be provided on the inner cover 23.

[0154] To facilitate the connection of the traction line S220 to the safety lock component S100 and / or the safety lock operating components S300 and S300', as shown in Figure 25, traction line heads S221 can be provided at both ends of the traction line S220. The diameter of the traction line head S221 is larger than the diameter of the traction line S220.

[0155] Correspondingly, as shown in Figures 14, 16, 26, and 31, at least one of the safety lock component S100 and the safety lock operating components S300 and S300' may be provided with a traction member fixing part S230. The traction member fixing part S230 can accommodate the traction wire head S221 and has a traction member channel S240 on its side wall. The width of the traction member channel S240 is smaller than the diameter of the traction wire head S221 but larger than the diameter of the traction wire S220, so as to allow the traction wire S220 connected to the traction wire head S221 to extend out of the traction member fixing part S230 through the traction member channel S240, thereby realizing the connection between the traction wire S220 and the safety lock component S100 and / or the safety lock operating components S300 and S300'.

[0156] In an embodiment where there is one traction line S220, as shown in Figures 14 to 28, a corresponding traction member fixing part S230 can be provided on the safety lock member S100. In an embodiment where there are two traction lines S220, as shown in Figures 29 to 36, two corresponding traction member fixing parts S230 can be provided on the safety lock member S100.

[0157] In the embodiment shown in FIG14, since the elastic element fixing part S103 is located in the extension direction of the traction element channel S240, the traction element channel S240 extends through the elastic element fixing part S103 so that the traction line S220 can extend out of the traction element fixing part S230.

[0158] Of course, the non-disclosure is not limited to this. In another embodiment, the release mechanism 10 may not include the safety lock operating member S300, S300' or the safety lock traction member S200, and the user may directly apply external force to the safety lock member S100 to move the safety lock member S100 to the release position.

[0159] The following describes in detail, with reference to the drawings, two implementation methods of the safety lock operating components S300 and S300' of the release mechanism 10. [ First implementation of the safety lock operating mechanism ] [ ]

[0160] The first embodiment of the safety lock operating component is the rotary knob S300 shown in Figures 13 to 28.

[0161] In one embodiment, the rotary knob S300 is rotatably mounted on the fixed base 500, which is connected to the first component 11.

[0162] It should be understood that the rotary knob S300 can also be rotatably mounted directly on the first component 11, without having to be mounted on the fixed base 500.

[0163] In addition, although the rotary knob S300 shown in Figures 13 to 28 is pivotal, the rotary knob S300 can also be a self-rotating knob. One end of the safety lock traction member S200 can be wrapped around the knob, so that the safety lock traction member S200 is driven by the self-rotation of the knob.

[0164] In the embodiment shown in Figure 25, the top of the fixed base 500 is provided with a fixed pivot shaft 510, and the rotary knob S300 is pivotally connected to the fixed pivot shaft 510, so that the user can apply force to the rotary knob S300 to make the rotary knob S300 pivot around the fixed pivot shaft 510 between the operating member locking position and the operating member unlocking position, thereby driving the safety lock traction member S200.

[0165] To facilitate the connection of the traction line S220 to the rotary knob S300, in the embodiment shown in FIG26, the rotary knob S300 may be provided with a traction member fixing part S230 and a traction member channel S240. The traction member fixing part S230 can accommodate the traction line head S221, and the traction member channel S240 allows the traction line S220 to pass through it.

[0166] The sheath S210 at one end of the safety lock traction component S200 connected to the rotary knob S300 can be fixed to the fixing base 500.

[0167] The fixed base 500 may be provided with a movable safety lock retainer S310, which is configured to hold the rotary knob S300 in the unlocked position of the operating element.

[0168] To facilitate the movement of the safety lock retainer S310, as shown in Figure 25, a retainer receiving portion 520 can be provided on the fixed base 500 for the safety lock retainer S310 to slide therein.

[0169] Of course, the safety lock retainer S310 can also be configured to pivot on the fixed base 500.

[0170] In the embodiments shown in Figures 25, 27 and 28, the safety lock retainer S310 is provided with a retainer blocking structure S312, and the rotary knob S300 is provided with a rotary knob blocking structure S301. The rotary knob blocking structure S301 and the retainer blocking structure S312 can engage to hold the rotary knob S300 in the operation member release position, as shown in Figure 28.

[0171] As shown in Figures 27 and 28, the rotary knob blocking structure S301 can be stepped, and the retaining member blocking structure S312 can be protruding and cooperate with the step (see Figure 25), so that the engagement of the two can prevent the rotary knob S300 from pivoting.

[0172] In order to keep the rotary knob blocking structure S301 engaged with the retaining member blocking structure S312, the release mechanism 10 is also provided with a retaining member elastic body S311, which is configured to drive the safety lock retaining member S310 against the rotary knob S300.

[0173] In the embodiment shown in FIG25, the retainer elastic body S311 may be a compression spring provided in the retainer receiving portion 520, so as to apply an elastic force to the safety lock retainer S310.

[0174] In the embodiments shown in Figures 25, 27 and 28, the rotary knob S300 may also be provided with another rotary knob blocking structure S302, which can engage with the retaining member blocking structure S312 to hold the rotary knob S300 in the operating member locked position, as shown in Figure 27.

[0175] Of course, this disclosure is not limited to this.

[0176] The safety lock retainer S310 can have other structures. For example, the safety lock retainer S310 can be a pin, one end of which can be inserted into a recess on the rotary knob S300 to hold the rotary knob S300 in the unlocked or locked position of the operating element.

[0177] When the user does not apply force to the rotary knob S300, as shown in Figures 21, 22, and 27, the rotary knob S300 is in the operating element locked position, and the safety lock member S100 is in the safety locked position, causing its safety lock engagement structure S101 to engage with one of the reel engagement structures 248 on the ratchet 244 (see Figure 22). Therefore, the ratchet 244 is blocked and cannot rotate, and the adjustment device 2 is in a locked state. Furthermore, the safety lock elastic member S102 holds the safety lock member S100 in the safety locked position, and the retaining member blocking structure S312 of the safety lock retainer S310 engages with another rotary knob blocking structure S302 on the rotary knob S300, thus holding the rotary knob S300 in the operating element locked position (see Figure 27).

[0178] When the user applies force to the rotary knob S300, this force must overcome the elastic forces of the safety lock elastic element S102 and the retaining element elastic body S311 to pivot the rotary knob S300 to the operating element release position, as shown in Figures 23, 24, and 28. The movement of the rotary knob S300 is transmitted to the safety lock member S100 via the safety lock traction element S200, causing the safety lock member S100 to move to the safety release position. At this point, the safety lock engagement structure S101 of the safety lock member S100 disengages from the reel engagement structure 248 (see Figure 24), and the ratchet 244 is not blocked by the safety lock member S100. If the locking element 100 is in the release position and does not block the ratchet 244, the ratchet 244 and its reel 24 can rotate, and the adjustment device 2 is in the release state. When the rotary knob S300 is pivoted to the unlocked position of the operating element, the retaining blocking structure S312 of the safety lock retainer S310 engages with the rotary knob blocking structure S301 on the rotary knob S300 to hold the rotary knob S300 in the unlocked position of the operating element (see Figure 28).

[0179] If the user no longer applies force to the rotary knob S300, the rotary knob S300 will remain in the unlocked position (see Figure 28).

[0180] Subsequently, when the user applies a force in the opposite direction to the rotary knob S300, the force only needs to overcome the elastic force of the retaining member elastic body S311 to pivot the rotary knob S300 toward the operating member locking position until the retaining member blocking structure S312 of the safety lock retaining member S310 engages with another rotary knob blocking structure S302 on the rotary knob S300 to hold the rotary knob S300 in the operating member locking position, as shown in Figure 27.

[0181] At the same time, the pivoting of the rotary knob S300 toward the operating member locking position causes the safety lock traction member S200 to no longer exert force on the safety lock member S100. Then, the safety lock member S100 moves toward the safety locking position under the elastic force of the safety lock elastic member S102 until the safety lock engaging structure S101 engages with one of the reel engaging structures 248, and the adjusting device 2 returns to the locked state. [ Second implementation of the safety lock operating mechanism ] [ ]

[0182] A second embodiment of the safety lock operating component is a push button S300' slidably mounted on the first component 11, as shown in Figures 29 to 36, which is configured to drive the safety lock component S100 via the safety lock traction component S200.

[0183] It should be understood that although the push button S300' shown in Figures 29 to 36 is a button that slides in a direction perpendicular to the extension direction of the first member 11, the push button S300' can also slide in the extension direction of the first member 11 to drive the safety lock traction member S200.

[0184] Furthermore, in the embodiments shown in Figures 29 to 36, there are two push buttons S300', and correspondingly, there are also two traction lines S220. Additionally, two traction fixing parts S230 are correspondingly provided on the safety lock component S100. The two traction lines S220 pull the same safety lock component S100, making the movement of the safety lock component S100 smoother.

[0185] However, it should be understood that in the second embodiment of the safety lock operating component, only one push button S300', one traction line S220 and one traction fixing part S230 can be provided.

[0186] In order to facilitate the sliding of the push button S300' relative to the first component 11, in the embodiments shown in Figures 30 to 36, a push button base S302' for the push button S300' to slide therein can be provided on the first component 11.

[0187] In the embodiments shown in Figures 33 and 35, a push button transmission member S310' is provided between the push button S300' and the safety lock traction member S200, which is configured to transmit the sliding of the push button S300' along a first direction (i.e., the direction perpendicular to the extension direction of the first member 11) to the other end of the safety lock traction member S200 moving along a second direction (i.e., the direction parallel to the extension direction of the first member 11).

[0188] It should be understood that the first direction and the second direction can be the same.

[0189] In this embodiment, the push button S300' may be provided with a push button inclined surface S301', and the push button transmission component S310' may be provided with a transmission inclined surface S311'. The push button inclined surface S301' and the transmission inclined surface S311' abut against each other, and the inclination direction of both is inclined to the moving direction of the push button S300'.

[0190] To facilitate the connection of the traction line S220 of the safety lock traction member S200 to the push button transmission member S310', in the embodiments shown in Figures 33 and 35, the push button transmission member S310' may be provided with a traction member fixing part S230 and a traction member channel S240. The traction member fixing part S230 can accommodate the traction line head S221, and the traction member channel S240 allows the traction line S220 to pass through it.

[0191] As shown in Figures 33 and 35, the sheath S210 of the safety lock traction component S200 connected to the push button S300' can be fixed to the push button base S302'.

[0192] When the user does not apply force to the push button S300', as shown in Figures 33 and 34, the push button S300' is in the operating member locked position, the push button ramp S301' is located above the transmission ramp S311' (see Figure 33), and the safety lock member S100 is in the safety locked position, so that its safety lock engagement structure S101 engages with one of the reel engagement structures 248 on the ratchet 244 (see Figure 34), so that the ratchet 244 is blocked and cannot rotate, and the adjustment device 2 is in the locked state. Moreover, the safety lock elastic member S102 holds the safety lock member S100 in the safety locked position.

[0193] When the user presses the push button S300' and slides it toward the first component 11, the push button inclined surface S301' abuts against the transmission inclined surface S311'. The two interact to cause the push button transmission component S310' to slide in a first direction parallel to the extension direction of the first component 11. Thus, the push button transmission component S310' drives the safety lock component S100 via the safety lock traction component S200.

[0194] As shown in Figures 35 and 36, when the push button S300' slides to the unlock position of the operating member, the push button ramp S301' slides to the lower part of the transmission ramp S311' (see Figure 35). The movement of the push button S300' is transmitted to the safety lock member S100 via the safety lock traction member S200, causing the safety lock member S100 to move to the safety unlock position. Thus, the safety lock engagement structure S101 of the safety lock member S100 disengages from the reel engagement structure 248 (see Figure 36), and the ratchet 244 is not blocked by the safety lock member S100. At this time, if the locking member 100 is in the unlock position and does not block the ratchet 244, the ratchet 244 and the reel 24 it is located on can rotate, and the adjusting device 2 is in the unlocked state.

[0195] When the user no longer applies force to the push button S300', the safety lock member S100 moves to the safety locked position under the elastic force of the safety lock elastic member S102, causing the safety lock engaging structure S101 to engage with one of the reel engaging structures 248, and the adjusting device 2 returns to the locked state. Simultaneously, the movement of the safety lock member S100 drives the push button transmission member S310' to slide in a second direction opposite to the first direction via the safety lock traction member S200. Thus, the transmission ramp S311' of the push button transmission member S310' abuts against the push ramp S301' of the push button S300', and the interaction between the two causes the push button S300' to return to the operating member locked position.

[0196] Since the features of this disclosure can be embodied in various forms without departing from the nature of this disclosure, it should also be understood that the above embodiments are not limited to any of the details described above, and unless otherwise stated, should be broadly interpreted as falling within the scope of the claims. Therefore, all modifications and alterations falling within the scope and limits of the claims or equivalent solutions of such scope and limits should be covered by the claims.

[0197] 1: Stroller 10: Release mechanism 11: Backrest, First Component 12: Seat, Second Component 13: Chassis 2: Adjustment device 20: Shell 21: First outer cover 22: Second outer cover 23: Inner cover 23A: Safety Lock Guide Section 23B: Sheath fixing part 231: Fixed Column 232: Connecting part 233: Through hole 234: Opening 24: Reel 24A: First plate 24A1, 24A2: Reel joint 24B: Second Disc 24C: Intermediate connecting part 240: Straps 241: Winding Groove 242: Installation Hole 243: Card Slot 244: Ratchet 245, 245': Guide groove 246: Gear 248: Reel locking structure 25: Clockwork Spring 251: First End 252: Second end 26: Connector 27: Auxiliary disk 271:Ontology 272: First limiting plate 273: Second limiting plate 274: Limiting Channel 28: Elastic component 281: One end 282: The other end 3: Box 31: Covering 32: Main Body 4: Baby carrier 41: Backpack components 42: Support components 100: Locking component 101: Connecting side 102: Free side 103: Card Section 104: Protrusion 200: Drive components 201: First End 202: Second End 300: Pull handle 300”: sliding handle 303”: Slide 304”: Operating component force application part 500: Fixture 504: Return spring 510: Fixed pivot axis 520: Retaining part receiving section 600: Fixed pin D1: Winding direction D2: Rewind direction S100: Safety lock component S101: Safety lock engagement structure S102: Safety lock elastic element S103: Elastic element fixing part S200: Safety lock traction component S210: Sheath S220: Traction line S221: Pull wire end S230: Traction component fixing part S240: Traction component channel S300: Rotary knob, safety lock operating mechanism S310: Safety lock retainer S311: Retaining element elastomer S312: Retaining element blocking structure S301: Rotary knob blocking structure S302: Another rotary knob blocking structure S300': Push button, safety lock operating component S301': push button slope S302': Push button base S310': Push button transmission component S311': Transmission ramp

Claims

1. A release mechanism for releasing the relative positioning between a first component and a second component, the release mechanism comprising: A locking member is configured to move between a locked position and an unlocked position, wherein in the locked position, the locking member blocks relative movement between the first member and the second member. A safety lock member is configured to move between a safety locked position and a safety unlocked position, wherein in the safety locked position, the safety lock member blocks relative movement between the first member and the second member. The locking member and the safety lock member are configured such that, when the locking member is in the unlocked position and the safety lock member is in the safety unlocked position, relative movement between the first member and the second member is allowed; when the locking member is in the locked position and the safety lock member is in the safety unlocked position, relative movement between the first member and the second member is blocked; and when the locking member is in the unlocked position and the safety lock member is in the safety locked position, relative movement between the first member and the second member is blocked.

2. The unlocking mechanism as described in claim 1, wherein, The release mechanism includes a safety lock operating member that can be operated to move the safety lock component to the safety release position.

3. The unlocking mechanism as described in claim 2, wherein, The release mechanism further includes a safety lock traction member, one end of which is connected to the safety lock component, and the other end of which is connected to the safety lock operating member, such that the safety lock operating member drives the safety lock component via the safety lock traction member.

4. The unlocking mechanism as described in claim 2, wherein, The safety lock operating component is a rotary knob that is rotatably mounted on a fixed base connected to the first component.

5. The unlocking mechanism as described in claim 4, wherein, The fixed base is provided with a movable safety lock retainer, which is configured to hold the rotary knob in the unlocked position of the operating element.

6. The unlocking mechanism as described in claim 3, wherein, The safety lock operating element is a push button that can be slidably mounted on the first component, and the push button is configured to drive the safety lock component via the safety lock traction element.

7. The unlocking mechanism as described in claim 6, wherein, A push button transmission component is provided between the push button and the safety lock traction component. The push button transmission component is configured to transmit the sliding of the push button along a first direction to the other end of the safety lock traction component that moves along a second direction, wherein the first direction and the second direction are the same or different.

8. An adjustment device for adjusting the position of a first member relative to a second member, the adjustment device being disposed on the first member and including an unlocking mechanism as described in any one of claims 1 to 7.

9. The adjustment device as described in claim 8, wherein, The adjustment device includes: a reel configured to rotate for winding a strap, the two ends of which extend outside the adjustment device and are fixed relative to the second member; the effective length of the strap can be increased or decreased to adjust the position of the first member relative to the second member; wherein the reel is provided with multiple reel engaging structures, and the safety lock member is provided with a safety lock engaging structure; when the safety lock member moves to the safety locking position, the safety lock engaging structure engages with one of the reel engaging structures to prevent the reel from rotating.

10. A stroller with a seat, the stroller being equipped with an adjustment device as described in claim 8 or 9, wherein, The release mechanism of the adjustment device is used to release the adjustment device, the first component is the backrest of the seat, and the second component is the seat of the seat.

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