Unlocking mechanism, adjusting device and baby carriage

Abstract

The invention provides an unlocking mechanism, an adjusting device and a baby carriage, the unlocking mechanism is used for releasing relative positioning between a first component and a second component and comprises a locking piece and an unlocking piece, the locking piece is arranged to be capable of moving between a locking position and an unlocking position, and the unlocking piece is arranged between the locking position and the unlocking position; the locking piece is used for blocking the relative movement between the first component and the second component; the safety lock component is arranged to be capable of moving between a safety locking position and a safety unlocking position, the safety lock component blocks relative movement between the first component and the second component at the safety locking position, and the safety lock component is arranged to be capable of moving between the safety locking position and the safety unlocking position. When the locking piece is located at the unlocking position and the safety lock component is located at the safety unlocking position, the first component and the second component can move relatively. According to the unlocking mechanism disclosed by the invention, the relative positioning between the two components can be reliably kept or released.

Description

Technical Field

[0001] The present disclosure relates to a unlocking mechanism, and further relates to an adjustment device provided with the unlocking mechanism and a baby stroller equipped with the unlocking mechanism and the adjustment device. Background Art

[0002] During the process of pushing and using a baby stroller, the adjustment of the backrest angle is quite common. Especially for infants under six months old, the common use mode of the baby stroller is in a lying flat state. That is, in the lying flat mode, the angle between the backrest and the seat of the baby stroller seat can be greater than 150 degrees. However, if the baby stroller is pushed on uneven ground, due to the ground impact force, the backrest will produce a gear jump, causing the backrest of the baby stroller seat to pivot towards the upright position, and the angle between the backrest and the seat will decrease, which may pose potential safety hazards and startle the baby. Summary of the Invention

[0003] The purpose of the present disclosure is to provide an unlocking mechanism that can reliably maintain or release the relative positioning between two components to reduce the problem of automatic gear jumping of the backrest of the baby stroller.

[0004] According to the solution of the present disclosure, an unlocking mechanism is provided for releasing the relative positioning between a first component and a second component. The unlocking mechanism includes: a locking member configured to be movable between a locking position and an unlocking position. In the locking position, the locking member blocks the relative movement between the first component and the second component; a safety lock member configured to be movable between a safety locking position and a safety unlocking position. In the safety locking position, the safety lock member blocks the relative movement between the first component and the second component. Wherein, when the locking member is in the unlocking position and the safety lock member is in the safety unlocking position, the first component and the second component can move relative to each other.

[0005] In one embodiment, the unlocking mechanism includes a safety lock operating member that can be operated to drive the safety lock member to the safety unlocking position.

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

[0007] In one embodiment, the safety lock traction member includes a traction wire, and traction wire heads are respectively provided at both ends of the traction wire. Among them, a traction member fixing portion is provided on at least one of the safety lock member and the safety lock operating member. The traction member fixing portion can accommodate the traction wire heads, and a traction member channel is provided on the side wall of the traction member fixing portion to allow the traction wire connected to the traction wire heads to extend out of the traction member fixing portion through the traction member channel.

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

[0009] In one embodiment, the safety lock operating member is a rotary knob rotatably mounted on a fixed seat, and the fixed seat is connected to the first member.

[0010] In one embodiment, a movable safety lock retaining member is provided on the fixed seat, and the safety lock retaining member is configured to be able to hold the rotary knob in the operating member unlocking position.

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

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

[0013] In one embodiment, the safety lock operating member is a push button slidably mounted on the first member, and the push button is configured to be able to drive the safety lock member via the safety lock traction member.

[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 be able to transfer the sliding of the push button in the first direction to the other end of the safety lock traction member moving in the second direction, where the first direction and the second direction are the same or different.

[0015] In one embodiment, a push button bevel is provided on the push button, and a transmission bevel is provided on the push button transmission member. The push button bevel and the transmission bevel abut against each other, and their inclination directions are inclined with respect to the moving direction of the push button.

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

[0017] In one embodiment, the adjustment device includes: a reel configured to be rotatable, around which a strap is wound. Both ends of the strap extend outside the adjustment device and are fixed relative to the second member. The increase or decrease of the effective length of the strap can adjust the position of the first member relative to the second member. Wherein, a plurality of reel engaging structures are provided on the reel, and a safety lock engaging structure is provided on the safety lock member. 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 block the rotation of the reel.

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

[0019] In one embodiment, a safety lock elastic member is provided in the adjustment device. The safety lock elastic member is configured to urge the safety lock engaging structure to engage with one of the reel engaging structures.

[0020] According to yet another aspect of the present disclosure, a baby stroller with a seat is proposed. The adjustment device and the unlocking mechanism described above are installed on the baby stroller. Wherein, the unlocking mechanism is used to unlock the adjustment device. The first member is the backrest of the seat, and the second member is the seat portion of the seat.

[0021] From the following detailed description of the present disclosure in conjunction with the accompanying drawings, the objectives, features, aspects, and advantages of the present disclosure will become more apparent. Description of the Drawings

[0022] The drawings are included herein to provide a further understanding of the present disclosure and are incorporated into this specification, forming a part of this specification. The drawings illustrate embodiments of the present disclosure and, together with the following description, are used to explain the concept of the present disclosure.

[0023] In the drawings:

[0024] Figures 1A to 1C Schematic diagram of a baby stroller equipped with an adjustment device.

[0025] Figure 2 and Figure 3 Respectively, exploded schematic diagrams of the adjustment device with a unlocking mechanism, observed from two angles.

[0026] Figure 4 and Figure 5 Respectively, Figure 2 External appearance schematic diagrams of the adjustment device shown, observed from two angles.

[0027] Fig. 6A and Figure 6B Respectively, schematic diagrams of the reel of the adjustment device, observed from two angles.

[0028] Fig. 7A and Figure 7B Respectively, schematic diagrams of the auxiliary disk of the adjustment device, observed from two angles.

[0029] Figure 8 , Fig. 9 and Fig.10 Respectively, Figure 2 Schematic diagrams of the internal structure of the adjustment device shown, observed from three angles.

[0030] Fig.11A and Fig. 12A Respectively, Figure 2 Schematic diagrams of the locking member of the adjustment device shown in the locked position and the unlocked position, respectively.

[0031] Fig. 11B and Fig. 12B Schematic diagram of another embodiment of the adjustment device.

[0032] Fig.13 External appearance schematic diagram of the adjustment device adopting the first embodiment of the unlocking mechanism according to the present disclosure.

[0033] Fig.14 is Fig.13 Partial exploded schematic diagram of the adjustment device shown.

[0034] Fig.15 is Fig.13 Schematic diagram of the adjustment device shown with the first outer cover removed.

[0035] Fig.16 is Fig.13 Schematic diagram of the adjustment device shown with the first outer cover and the safety lock traction member removed.

[0036] Fig.17 is Fig.15 Schematic diagram of the adjustment device shown in the locked state.

[0037] Fig.18 is Fig.15 A schematic diagram showing the adjusting device in the unlocked state as shown.

[0038] Fig.19 is Fig.17 A schematic diagram of the adjusting device shown with the inner cover and the safety lock member removed.

[0039] Fig. 20 is Fig.14 A schematic diagram of the safety lock member of the unlocking mechanism shown as shown.

[0040] Fig.21 and Fig. 22 shows Fig.14 A schematic diagram showing the safety lock member in the safety locking position as shown.

[0041] Fig.23 and Fig.24 shows Fig.14 A schematic diagram showing the safety lock member in the safety unlocking position as shown.

[0042] Fig.25 shows Fig.13 A partially exploded schematic diagram of the operating member and the safety lock operating member of the unlocking mechanism shown as shown.

[0043] Fig.26 shows Fig.13 A partially exploded schematic diagram of the unlocking mechanism shown with the fixed seat removed.

[0044] Fig. 27 is Fig.26 A side view of the adjusting device shown with the first outer cover and the inner cover removed, wherein the safety lock operating member is in the operating member locking position.

[0045] Fig.28 is Fig.26 A side view of the adjusting device shown with the first outer cover and the inner cover removed, wherein the safety lock operating member is in the operating member unlocking position.

[0046] Fig.29 A front view of the adjusting device using the second embodiment of the unlocking mechanism according to the present disclosure mounted on the first member.

[0047] Fig.30 An external view of the adjusting device using the second embodiment of the unlocking mechanism according to the present disclosure.

[0048] Fig.31 is Fig.30 A schematic diagram of the adjusting device shown with the first outer cover removed.

[0049] Fig.32 is Fig.31 a schematic view of the safety lock member of the unlocking mechanism shown

[0050] Fig.33 shown from another angle Fig.30 the safety lock operating member of the unlocking mechanism shown, wherein the safety lock operating member on the right has the push button base removed and is in the operating member locked position

[0051] Fig.34 shows Fig.31 a schematic view of the safety lock member of the unlocking mechanism shown in the safety locked position

[0052] Fig.35 shown from another angle Fig.30 the safety lock operating member of the unlocking mechanism shown, wherein the safety lock operating member on the right has the push button base removed and is in the operating member unlocked position

[0053] Fig.36 shows Fig.31 a schematic view of the safety lock member of the unlocking mechanism shown in the safety unlocked position

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

[0055] Fig.38 is Fig.37 a schematic view of the box shown being opened

[0056] Fig.39 is a schematic view of a baby carrier employing the unlocking mechanism according to the present disclosure

[0057] Fig.40 is Fig.39 a schematic view of the support assembly of the baby carrier shown adjusting the angle relative to the carrying assembly

[0058] List of Reference Numerals

[0059] 1 Baby stroller

[0060] 11 Backrest, first member

[0061] 12 Seat portion, second member

[0062] 13 Frame

[0063] 2 Adjusting device

[0064] 20 Housing

[0065] 21 First outer cover

[0066] 22 Second outer cover

[0067] 23 Inner cover

[0068] 23A Safety Lock Guide Part

[0069] 23B Sheath Fixing Part

[0070] 231 Fixed Post

[0071] 232 Connecting Part

[0072] 233 Through Hole

[0073] 234 Opening

[0074] 24 Reel

[0075] 24A First Disk

[0076] 24A1, 24A2 Reel Joint Part

[0077] 24B Second Disk

[0078] 24C Intermediate Connecting Part

[0079] 240 Belt

[0080] 241 Winding Groove

[0081] 242 Placement Hole

[0082] 243 Card Slot

[0083] 244 Ratchet

[0084] 245, 245’ Guide Slot

[0085] 246 Gear

[0086] 248 Reel Engagement Structure

[0087] 25 Spring

[0088] 251 First End

[0089] 252 Second End

[0090] 26 Connecting Piece

[0091] 27 Auxiliary Disk

[0092] 271 Body

[0093] 272 First Limiting Piece

[0094] 273 Second Limiting Piece

[0095] 274 Limiting Channel

[0096] 28 Elastic Part

[0097] 281 One End

[0098] The other end of 282

[0099] 3 boxes

[0100] 31 covers

[0101] 32 main bodies

[0102] 4 baby carriers

[0103] 41 back-carrying components

[0104] 42 support components

[0105] 100 locking parts

[0106] 101 connecting sides

[0107] 102 free sides

[0108] 103 engaging parts

[0109] 104 protrusions

[0110] 200 driving parts

[0111] 201 first ends

[0112] 202 second ends

[0113] 300 pull handles

[0114] 300” sliding handles

[0115] 303” sliding grooves

[0116] 304” operating part force application parts

[0117] 500 fixing bases

[0118] 504 return springs

[0119] 510 fixing pivot shafts

[0120] 520 holding part accommodating parts

[0121] 600 fixing pins

[0122] D1 winding direction

[0123] D2 unwinding direction

[0124] S100 safety lock components

[0125] S101 safety lock engaging structures

[0126] S102 safety lock elastic parts

[0127] S103 elastic part fixing parts

[0128] S200 safety lock traction parts

[0129] Sheath S210

[0130] Traction wire S220

[0131] Traction wire head S221

[0132] Fixing part of traction member S230

[0133] Traction member channel S240

[0134] Rotating knob, safety lock operating member S300

[0135] Safety lock retaining member S310

[0136] Retaining member elastomer S311

[0137] Retaining member blocking structure S312

[0138] Rotating knob blocking structure S301

[0139] Another rotating knob blocking structure S302

[0140] Push button, safety lock operating member S300’

[0141] Push button inclined plane S301’

[0142] Push button base S302’

[0143] Push button transmission member S310’

[0144] Transmission inclined plane S311’ Detailed implementation manners

[0145] The present disclosure will be described in detail below with reference to the accompanying drawings.

[0146] It should be understood that in the following description of the embodiments, directional terms such as "upper", "lower", "top", etc. are only schematic descriptions with reference to the accompanying drawings, rather than limiting the direction and positional relationship of the relevant objects or components.

[0147] The unlocking mechanism according to the present disclosure can be used to release the relative positioning between the first component and the second component, so that the first component and the second component can move relative to each other. It should be understood that the unlocking mechanism according to the present disclosure can be applied to the occasions of unlocking the relative positioning between two components in various fields.

[0148] For example, the first component and the second component can be the backrest 11 and the seat part 12 of the seat of the stroller 1 or the backrest and the seat part of the safety seat (see Figure 1A , Figure 1B , Figure 1C ), or can be the covering (for example, a door or a lid) 31 covering an opening and the main body 32 of the box 3 (see Fig.37 and Fig.38 ), or may be the support component 42 and the carrying component 41 of the baby carrier 4 (see Fig.39 and Fig.40 ).

[0149] In addition, the first member and the second member unlocked by the unlocking mechanism according to the present disclosure may be in a situation where one is fixed and the other is movable, or both may be movable.

[0150] To describe the unlocking mechanism according to the present disclosure more clearly, the following first describes it by taking the case where the unlocking mechanism is applied to the stroller 1 as an example.

[0151] Baby stroller with locking mechanism

[0152] Figures 1A to 1C A stroller 1 is shown. In this embodiment, the first member is the backrest 11 of the seat of the stroller 1, and the second member is the seat portion 12 of the seat. The seat portion 12 is mounted on the frame 13 of the stroller 1. The movement of the backrest 11 relative to the seat portion 12 is a pivotal movement. For example, the backrest 11 can be pivoted relative to the seat portion 12 to a contact position where the backrest 11 touches the seat portion 12, or can be pivoted to an upright position, or can be pivoted to a lying flat position. In other words, the positions that the backrest 11 can pivot to relative to the seat portion 12 include the contact position, the upright position, the lying flat position, and other suitable positions between any two of these three positions.

[0153] The position where the backrest 11 pivots relative to the seat portion 12 of the seat is adjusted by the adjusting device 2, and the adjusting device 2 is unlocked by the unlocking mechanism according to the present disclosure.

[0154] In the present disclosure, the "upright position" means the position where the backrest 11 pivots relative to the seat portion 12 allows the baby to sit upright in the stroller. For example, the angle between the backrest 11 and the seat portion 12 is about 90 degrees, but is not limited thereto. The "lying flat position" means the position where the backrest 11 pivots relative to the seat portion 12 allows the baby to lie flat in the stroller. For example, the angle between the backrest 11 and the seat portion 12 is about 180 degrees, but is not limited thereto. It should be understood that in the present disclosure, the positions that the backrest 11 can pivot to relative to the seat portion 12 include the contact position, the upright position, the lying flat position, and other suitable positions between these three positions. Here, the "suitable position" means the position where the backrest 11 pivots relative to the seat portion 12 allows the baby to sit or lie comfortably in the stroller or allows the stroller to meet some usage requirements, such as folding the seat or the stroller, etc.

[0155] In the following, the case where the backrest 11 pivots between the upright position and the lying flat position relative to the seat portion 12 (including the cases of pivoting to the upright position or the lying flat position) is taken as an example for description.

[0156] For ease of description, in this text, the direction facing the seat is defined as the front, and the direction opposite to the seat is defined as the rear.

[0157] Adjustment device including release mechanism

[0158] It should be understood that in Figures 1A to 1C the illustrated embodiment, the adjustment device 2 according to the present disclosure is used to adjust the position where the backrest 11 of the seat of the stroller pivots relative to the seat portion 12 of the seat. However, the present disclosure is not limited thereto. The adjustment device 2 according to the present disclosure can also be used to adjust the position between other two components. For example, it can be used to adjust the position where the backrest of another seat (such as a safety seat) pivots relative to the seat portion, or to adjust the position of a covering 31 relative to a main body 32 (see Fig.37 and Fig.38 ), or to adjust the position of the support assembly 42 of the baby carrier 4 relative to the carrying assembly 41 (see Fig.39 and Fig.40 ).

[0159] As Figures 1A to 1C shown, the adjustment device 2 is arranged at the rear side of the backrest 11 of the stroller 1. Of course, the adjustment device 2 can also be arranged at other suitable positions of the stroller 1 as long as it is convenient for the user to operate.

[0160] In Figures 2 to 5 the illustrated embodiment, the adjustment device 2 can 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 form the housing 20 of the adjustment device 2 (see Figure 4 and Figure 5 ). However, the present disclosure is not limited thereto. In another embodiment, two or three of the first outer cover 21, the second outer cover 22, and the inner cover 23 can be integrally formed components. In yet another embodiment, the first outer cover 21 can be not provided.

[0161] The adjustment device 2 can further include a reel 24, which is arranged between the inner cover 23 and the second outer cover 22 to be rotatable, for a strap 240 (see Figure 1C and Fig. 6A ) to be wound thereon. Both ends of the strap 240 extend to the outside of the housing 20 (as Figure 1C , Figure 4 and Figure 5 shown), and are fixed to the frame 13 of the stroller 1. Of course, both ends of the strap 240 can also be fixed to the seat portion 12 or other parts of the stroller 1 as long as both ends of the strap 240 are fixed relative to the seat portion 12.

[0162] It should be noted that the strap 240 shown in the figure is only for illustration. In Fig. 6A and Figure 6B In the illustrated embodiments, the reel 24 includes a first disk 24A and a second disk 24B that are annular. The first disk 24A and the second disk 24B are connected by an intermediate connecting portion 24C, such that a circumferentially extending winding groove 241 is formed between the first disk 24A and the second disk 24B. The first disk 24A and the intermediate connecting portion 24C together form a placement hole 242 within the reel 24. Two guiding grooves 245, 245' are also provided on the first disk 24A. The guiding grooves 245, 245' on the first disk 24A can be symmetrically arranged as shown in Fig. 6A or asymmetrically arranged, and their positions are adjusted according to actual requirements.

[0163] The adjusting device 2 may further include a clockwork spring 25. As shown in Figure 2 , the clockwork spring 25 is located inside the reel 24. For example, it can be arranged in the placement hole 242 within the reel 24 as shown in Fig. 6A .

[0164] The adjusting device 2 may further include a connecting member 26 to fix the adjusting device 2 to the backrest 11. The connecting member 26 is disposed on the front side of the backrest plate of the backrest 11, while the second outer cover 22 is disposed on the rear side of the backrest plate of the backrest 11. As shown in Figure 2 and Figure 3 , fixing members, such as screws, can be sequentially passed through the connecting member 26, the backrest plate, the second outer cover 22, the inner cover 23, and the first outer cover 21, thereby fixing the adjusting device 2 to the backrest 11.

[0165] In another embodiment, the connecting member 26 may not be provided, and the housing 20 of the adjusting device 2 can be directly fixed to the backrest 11 by fixing members such as screws, thereby reducing components and optimizing the fixing method.

[0166] In the adjusting device 2, the strap 240 plays a bearing role on the backrest 11 of the seat of the stroller 1. When the backrest 11 pivots towards the upright position or towards the lying flat position, the effective length of the strap 240 required to bear the backrest 11 (i.e., the length of the part of the strap 240 that extends outside the housing 20 of the adjusting device 2) will change. In order to keep the strap 240 in a tightened state for bearing the backrest 11 all the time, the reel 24 winds a part of the strap 240 thereon and winds or unwinds a part of the strap 240 as needed by its own rotation. As shown in Fig. 6A and Figure 6B , a winding groove 241 is provided on the circumferential side of the reel 24, and the strap 240 is wound in the winding groove 241.

[0167] In addition, as shown in Figure 8 and Fig. 9As shown, the clockwork spring 25 is arranged to be able to drive the reel 24 to rotate in the winding direction D1. Thus, by means of the elastic force of the clockwork spring 25, the reel 24 can be driven to rotate in the winding direction D1, and at this time, the strap 240 is wound around the reel 24. On the other hand, when the reel 24 rotates in the unwinding direction D2 opposite to the winding direction D1, the clockwork spring 25 is wound up, and at this time, the strap 240 unwinds from the reel 24.

[0168] More specifically, Figure 8 and Fig. 9 The illustrated embodiment shows a way of arranging the clockwork spring 25. In this embodiment, the clockwork spring 25 is wound and placed in the placement hole 242 inside the reel 24. The first end 251 of the clockwork spring 25 is snapped into the fixing post 231 of the inner cover 23, and the second end 252 of the clockwork spring 25 is snapped into the card slot 243 on the side wall of the placement hole 242 of the reel 24. Of course, the present disclosure is not limited to this, and the clockwork spring 25 can be arranged in other common ways as long as it can drive the reel 24 to rotate.

[0169] As Figure 2 , Figure 3 and Fig.10 shown, in order to prevent the clockwork spring 25 from detaching from the placement hole 242 of the reel 24, an auxiliary disc 27 can be provided outside the placement hole 242, and the auxiliary disc 27 is arranged to be able to block the clockwork spring 25.

[0170] In addition, the auxiliary disc 27 also plays a role in assisting the winding of the strap 240. In the embodiment shown in Fig. 7A and Figure 7B , the auxiliary disc 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 for the strap 240 to pass through (see Fig. 7A ), and this limiting channel 274 can prevent the strap 240 from slipping off the auxiliary disc 27.

[0171] The strap 240 only bypasses half of the outer periphery of the auxiliary disc 27. Thus, in the embodiment shown in Fig. 7A , the first limiting piece 272 and the second limiting piece 273 are only provided at half of the outer periphery of the auxiliary disc 27. It should be understood that the first limiting piece 272 and the second limiting piece 273 can also be provided on the entire outer periphery of the auxiliary disc 27. In addition, although in Fig. 7A and Figure 7B , the first limiting piece 272 and the second limiting piece 273 are staggered circumferentially, but the first limiting piece 272 and the second limiting piece 273 can also be opposite circumferentially. Moreover, the number of the first limiting piece 272 and the second limiting piece 273 can be set as required.

[0172] Next, a way of winding the strap 240 around the reel 24 will be described in detail with reference to Fig. 6A , Fig. 7A and Fig.10 . In this way, the strap 240 enters the housing 20 of the adjusting device 2 through an opening 234 on the circumferential side of the inner cover 23 (see Figure 5 ), 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 Fig. 6A ), bypasses the part of the reel 24 provided with the first limiting piece 272 and the second limiting piece 273, so that the strap 240 winds around the placement hole 242, and then 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.

[0173] By passing the strap 240 through the limiting channel 274 of the auxiliary disc 27, the tension of the strap 240 can be increased, thereby improving the stability of the strap 240 unwinding from the reel 24.

[0174] It should be understood that the way of winding the strap 240 around the reel 24 is not limited to this. In other embodiments of the present disclosure, the auxiliary disc 27 may not be provided, so that the part of the strap 240 passing through the placement hole 242 is straight, and thus the strap 240 is in a tensioned state.

[0175] In addition, in the Fig. 6A shown embodiment, only one strap 240 is used. However, in other embodiments, two straps 240 may also be used. At the same time, the reel 24 is correspondingly 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.

[0176] In another embodiment, the adjusting device 2 according to the present disclosure may not be provided with a clockwork spring 25, and the strap 240 is set as a member having its own elasticity, so that the strap 240 can drive the reel 24 to rotate through its own elasticity.

[0177] The angle between the backrest 11 and the seat portion 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 portion 12 becomes smaller, causing the effective length of the strap 240 required to support the backrest 11 to become shorter. The reel 24 can then wind up the slack strap 240, allowing the clockwork spring 25 to drive the reel 24 to rotate in the winding direction D1. When the backrest 11 pivots to the upright position, most of the strap 240 is wound around the reel 24, leaving only a small portion extending from the reel 24 and fixed to the frame 13 of the stroller 1, preventing the reel 24 from rotating further in the winding direction D1.

[0178] When the user adjusts the backrest 11 of the stroller 1 to pivot towards the lying-flat position, the obtuse angle between the backrest 11 and the seat portion 12 becomes larger, causing the effective length of the strap 240 required to support the backrest 11 to become longer. When the backrest 11 pivots to the lying-flat 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, thus preventing the backrest 11 from further rotation. Additionally, during the process of the strap 240 unwinding from the reel 24, it will drive the reel 24 to rotate in the unwinding direction D2, causing the clockwork spring 25 positioned within the reel 24 to be wound up.

[0179] Therefore, by adjusting the effective length of the strap 240, the position of the backrest 11 pivoting relative to the seat portion 12 can be controlled. On the premise that the length of the strap 240 is the same, during the process of the reel 24 rotating from fully unwinding the strap 240 to fully winding the strap 240, the angle it rotates is related to the diameter of the reel 24. When the diameter of the reel 24 is larger, the angle of rotation of the reel 24 is smaller; when the diameter of the reel 24 is smaller, the angle of rotation of the reel 24 is larger. Thus, the diameter of the reel 24 can be configured according to actual usage requirements. For example, by selecting a reel 24 with a smaller diameter, the overall volume of the adjustment device 2 can be reduced.

[0180] In order to enable the backrest 11 to stay in the upright position, or the lying-flat position, or a suitable position between the two, a positioning member that rotates coaxially is provided on the reel 24, and a locking member 100 that cooperates with the positioning member is also provided within the adjustment device 2.

[0181] In Figure 3 、 Figure 6B and Fig.11A and Fig. 12A In the embodiments shown, the positioning member is a one-way positioning ratchet wheel 244. However, the present disclosure is not limited thereto, and the positioning member can also be a two-way positioning gear 246 (see Fig. 11B and Fig. 12B ) or other mechanisms with engagement grooves or engagement protrusions, etc., as long as it can be positioned after engaging with the locking member 100 and can move after disengaging from the locking member 100.

[0182] In the following, the ratchet wheel 244 whose positioning member is unidirectional positioning is taken as an example for description.

[0183] In order to make the ratchet wheel 244 rotate coaxially with the reel 24, in Figure 6B the illustrated embodiment, the ratchet wheel 244 is attached to the second disc 24B of the reel 24. However, the present disclosure is not limited thereto. For example, a separate ratchet wheel 244 may not be provided, but the second disc 24B of the reel 24 may be made into a ratchet wheel. Of course, other forms of positioning members may be arranged on the reel 24 in the same manner.

[0184] As Fig.11A shown, the rotation of the ratchet wheel 244 in the unwinding direction D2 will be selectively blocked by the locking member 100, causing the reel 24 not to rotate in the unwinding direction D2; however, the rotation of the ratchet wheel 244 in the winding direction D1 will not be blocked by the locking member 100. As Fig.11A shown, when the rotation of the ratchet wheel 244 on the reel 24 in the unwinding direction D2 is blocked by the locking member 100, the reel 24 also cannot rotate in the unwinding direction D2, the adjustment device 2 is in a locked state, and the ratchet wheel 244 can only rotate in the winding direction D1, so that the backrest 11 can only freely pivot towards the upright position to a suitable position and stay at the suitable position, but cannot pivot towards the lying position.

[0185] As Fig. 12A shown, when the locking member 100 moves to the unlocking position and the rotation of the ratchet wheel 244 on the reel 24 in the unwinding direction D2 is no longer blocked by the locking member 100, the adjustment device 2 is in an unlocked state, and the ratchet wheel 244 can rotate both in the winding direction D1 and in the unwinding direction D2, so that the backrest 11 can not only pivot towards the upright position to a suitable position, but also pivot towards the lying position to a suitable position. After the backrest 11 pivots towards the upright position or the lying position to a suitable position, as long as the locking member 100 is returned to the Fig.11A shown locking position, the rotation of the ratchet wheel 244 on the reel 24 in the unwinding direction D2 is blocked by the locking member 100 again, and the backrest 11 will stay at the suitable position. Through the cooperation of the ratchet wheel 244 and the locking member 100, the adjustment device 2 according to the present disclosure can achieve unidirectional locking and unidirectional unlocking of the pivot of the backrest 11 towards the lying position.

[0186] It should be understood that the above describes an embodiment in which the rotation of the ratchet wheel 244 in the unwinding direction D2 is selectively blocked by the locking member 100, but the present disclosure is not limited thereto.

[0187] In another embodiment (not shown), the ratchet wheel 244 may be arranged reversely. For example, the ratchet wheel 244 is arranged such that the engagement direction of the ratchet teeth is opposite to Fig.11A 、 Fig. 12A The joining directions shown are opposite, such that rotation in the winding direction D1 is selectively blocked by the locking member 100. However, rotation of the ratchet wheel 244 in the unwinding direction D2 is not blocked by the locking member 100. This embodiment is different from Fig.11A 、 Fig. 12A the embodiment shown in that when the rotation of the ratchet wheel 244 on the reel 24 in the winding direction D1 is blocked by the locking member 100, the reel 24 cannot rotate in the winding direction D1, the adjustment device 2 is in a locked state, the ratchet wheel 244 can only rotate in the unwinding direction D2, causing the backrest 11 to only be able to pivot freely 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 unlocking position such that the rotation of the ratchet wheel 244 on the reel 24 in the winding direction D1 is no longer blocked by the locking member 100, the adjustment device 2 is in an unlocked state, the ratchet wheel 244 can rotate both in the winding direction D1 and in the unwinding direction D2, enabling the backrest 11 to pivot not only towards the upright position to a suitable position, but also towards the lying position to a suitable position. After the backrest 11 pivots towards the upright position or towards the lying position to a suitable position, as long as the locking member 100 is returned to the locking position, the rotation of the ratchet wheel 244 on the reel 24 in the winding direction D1 is blocked by the locking member 100 again, and the backrest 11 will stay at that suitable position.

[0188] In yet another embodiment, the positioning member is a bidirectional positioning gear 246 (see Fig. 11B and Fig. 12B ) or other mechanisms with engaging grooves or engaging protrusions, etc. That is, the positioning member is arranged such that rotation in either the winding direction D1 or the unwinding direction D2 will be selectively blocked by the locking member 100. The difference between this yet another embodiment and the embodiment using the ratchet wheel 244 is that when the rotation of the positioning member on the reel 24 is blocked by the locking member 100, as Fig. 11B shown, the reel 24 can neither rotate in the winding direction D1 nor in the unwinding direction D2, and the adjustment device 2 is in a locked state. When the locking member 100 moves to the unlocking position such that the rotation of the positioning member on the reel 24 is no longer blocked by the locking member 100, as Fig. 12B shown, the adjustment device 2 is in an unlocked state, the positioning member can rotate both in the winding direction D1 and in the unwinding direction D2, enabling the backrest 11 to pivot not only towards the upright position to a suitable position, but also towards the lying position to a suitable position. After the backrest 11 pivots towards the upright position or towards the lying position to a suitable position, as long as the locking member 100 is returned to the locking position, as Fig. 11B shown, the rotation of the positioning member on the reel 24 is blocked by the locking member 100 again, and the backrest 11 will stay at that suitable position.

[0189] The locking member 100 is configured to be movable between a locked position and an unlocked position. In the locked position, the locking member 100 blocks the backrest 11 from pivoting; in the unlocked position, the locking member 100 does not block the backrest 11 from pivoting.

[0190] In the illustrated embodiment, the movement of the locking member 100 is a pivoting movement. However, the movement of the locking member 100 can also be a sliding movement, or a combined movement of pivoting and sliding.

[0191] Specifically, as Fig.11A and Fig. 12A shown, the connecting side 101 of the locking member 100 is pivotally connected to the connecting portion 232 on the inner cover 23, such that the free side 102 of the locking member 100 can pivot relative to the connecting portion 232. Fig.11A and Fig. 12A respectively show schematic views of the locking member 100 in the locked position and in the unlocked position. As Fig.11A shown, 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 wheel 244, thereby blocking the ratchet wheel 244 from rotating in the unwinding direction D2. As Fig. 12A shown, 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 wheel 244, thereby not blocking the ratchet wheel 244 from rotating in the unwinding direction D2.

[0192] Of course, the locking member 100 according to the present disclosure is not limited thereto, and the locking member 100 can also be configured to slide up and down along a slide rail (not shown) on the inner housing 23, such that the engaging portion 103 of the locking member 100 can engage or disengage with the ratchet teeth on the ratchet wheel 244. At this time, the movement of the locking member 100 is a sliding movement.

[0193] As Fig.11A and Fig. 12A shown, the adjusting device 2 can include an elastic member 28, and the elastic member 28 is configured to drive the locking member 100 to move to the locked position, so that the locking member 100 tends to block the ratchet wheel 244 from rotating in the unwinding direction D2. In the Fig.11A and Fig. 12A illustrated embodiment, the elastic member 28 is a torsion spring disposed around the connecting side 101 of the locking member 100. One end 281 of the torsion spring abuts against the inner upper wall of the inner housing 23, and the other end 282 is connected to the protrusion 104 in the middle of the locking member 100.

[0194] Of course, the elastic member 28 can also take various forms such as a tension spring, a compression spring, an elastic cord or an elastomer, as long as it can drive the locking member 100 to move to the locked position.

[0195] In the case where the positioning member is a ratchet wheel 244 with one-way positioning, when the user adjusts the backrest 11 of the stroller 1 to pivot towards the lying flat position, the reel 24 will rotate along the unwinding direction D2. However, the locking member 100 tends to block the rotation of the ratchet wheel 244 and the reel 24 along the unwinding direction D2 under the elastic force of the elastic member 28. Therefore, the user needs to first operate the locking member 100 to move it to the unlocking position and keep the locking member 100 in the unlocking position (that is, to change the adjustment device 2 from the locked state to the unlocked state and keep it in the unlocked state), and then can pull the backrest 11 of the stroller 1 to pivot towards the lying flat position.

[0196] Release mechanism

[0197] To facilitate the operation of the user, the present disclosure proposes an unlocking mechanism for changing the adjustment device 2 to the unlocked state, thereby releasing the positioning of the backrest 11 and enabling the backrest 11 to pivot.

[0198] The unlocking mechanism can be used to release the relative positioning between the first member 11 and the second member 12, and includes a locking member 100 configured to be able to move between a locking position and an unlocking position. In the locking position, the locking member 100 blocks the relative movement between the first member and the second member, and in the unlocking position, the locking member 100 does not block the relative movement between the first member and the second member.

[0199] To facilitate the operation of the user on the locking member 100, in one embodiment, the unlocking mechanism may further include an operating member configured to directly or indirectly drive the locking member 100 to the unlocking position under an external force. Here, "directly" means that the operating member is in direct contact with the locking member 100 and acts thereon. "Indirectly" means that the operating member is not in direct contact with the locking member 100, but transmits the acting force between the two via other members.

[0200] In one embodiment, the unlocking mechanism may include a driving member 200, the first end 201 of the driving member 200 is connected to the locking member 100; the second end 202 is connected to the operating member. Wherein, the operating member is configured to drive the locking member 100 to the unlocking position via the driving member 200 under an external force. The driving member 200 enables the locking member 100 and the operating member to be separated by a certain distance, thereby allowing the arrangement position of the operating member to be more flexible.

[0201] Of course, the present disclosure is not limited thereto. In another embodiment, the unlocking mechanism may not include an operating member or the driving member 200, and the user directly applies an external force to the locking member 100 to move the locking member 100 to the unlocking position.

[0202] The operating member may adopt a pull handle 300 that drives the driving member 200 to move by being pulled (see Figure 2 and Figure 3 ), or a sliding handle 300 that drives the driving member 200 to move by sliding on the fixed seat 500 can also be adopted” (see Figures 13 to 19 ).

[0203] For the sake of convenience of description, hereinafter, taking the operating member as the sliding handle 300, the positioning member as the ratchet wheel 244 with one-way positioning, and the unlocking mechanism as the one-way unlocking mechanism that only unlocks the case where the pivot of the backrest 11 towards the lying position is blocked as an example, the description will be made in conjunction with the accompanying drawings.

[0204] As Figures 13 to 24 shown, in this embodiment of the unlocking mechanism, 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 sliding handle 300”. The sliding handle 300” and the driving member 200 can be two independent components, or can be a single integrally formed component. The sliding handle 300” drives the driving member 200 to move, thereby driving the locking member 100 to move to the unlocking position.

[0205] The driving member 200 can be a flexible member capable of withstanding tensile force, such as a webbing, a drawstring, or a wire, etc., but is not limited thereto.

[0206] In order to enable the driving member 200 to enter from the outside of the adjusting device 2 into the inside to be connected to the locking member 100, the driving member 200 can pass through the through hole 233 on the inner cover 23 (see Fig.14 ). The position of the through hole 233 on the inner cover 23 is preferably formed corresponding to the locking member 100, so as to facilitate the driving member 200 to pass through the through hole 233 and be connected to the locking member 100.

[0207] In Figures 13 to 19 the shown embodiment, the adjusting device 2 and the fixed seat 500 are two separate components. Among them, the sliding handle 300” is connected to the flexible driving member 200 and is arranged to drive the driving member 200 to move, thereby driving the locking member 100 to move to the unlocking position by means of the driving member 200, and making the adjusting device 2 become the unlocked state.

[0208] In Figures 13 to 19 the shown embodiment, the sliding handle 300” is slidably arranged on the fixed seat 500, and the fixed seat 500 is arranged on the backrest 11 through the fixing pin 600. Moreover, a long-shaped sliding groove 303” is correspondingly provided on the sliding handle 300” for the fixing pin 600 to pass through. The sliding groove 303” slides relative to the fixing pin 600, which restricts the sliding of the sliding handle 300” relative to the fixed seat 500 within the range of the sliding groove 303”, so as to avoid the sliding handle 300” detaching from the fixed seat 500.

[0209] In Figures 13 to 19In the illustrated embodiment, a return spring 504 is provided between the fixed seat 500 and the sliding handle 300", and the return spring 504 is configured to drive the sliding handle 300" back to an initial position where the driving member 200 is not driven. Although in this embodiment, the return spring 504 is a compression spring disposed in the sliding groove 303", the present disclosure is not limited thereto, and the return spring 504 may be a tension spring, a torsion spring or other elastic member, and the return spring 504 may be disposed at other suitable positions that can drive the sliding handle 300" back to the initial position.

[0210] In order to facilitate the user to operate the sliding handle 300", Figures 13 to 19 In the illustrated embodiment, the sliding handle 300" can be designed to have a force-applying portion (i.e., an operating member force-applying portion) 304" extending horizontally (i.e., extending in a direction perpendicular to the moving direction of the sliding handle 300" and away from the backrest 11), and the operating member force-applying portion 304" is in the shape of a trigger.

[0211] When the user is ready to adjust the angle of the backrest 11 of the stroller 1, the user can first hook the operating member force applying portion 304' of the sliding handle 300' with a finger and apply external force to the operating member force applying portion 304' to make the sliding handle 300' slide relative to the fixing seat 500. The sliding handle 300' drives the locking member 100 of the adjustment device 2 to move to the unlocking position via the driving member 200, so that the adjustment device 2 becomes unlocked, and then the inclination angle of the backrest 11 is changed (the backrest 11 is not limited to pivoting movement).

[0212] Safety lock component of the release mechanism

[0213] In one case, if the positioning member on the reel 24 in the adjustment device 2 is a unidirectionally positioned ratchet 244, when the baby stroller 1 equipped with such an adjustment device 2 passes over an uneven or obstructed ground, the impact of the ground will cause the backrest 11 of the baby stroller 1 to jump out of gear. This is because the ratchet 244 and the reel 24 on which it is located vibrate with the baby stroller 1. During this process, the rotation of the ratchet 244 along the winding direction D1 will not be blocked by the locking member 100. In addition, the spring spring 25 in the reel 24 tends to rotate the ratchet 244 and the reel 24 on which it is located along the winding direction D1. Therefore, the reel 24 may rotate along the winding direction D1 and wind up the strap 240 due to the vibration. As a result, the effective length of the strap 240 required to support the backrest 11 becomes shorter, causing the backrest 11 of the baby stroller 1 to move toward the upright position, causing the backrest 11 to jump out of gear, which may pose a potential safety hazard and scare the baby.

[0214] The backrest 11 of the stroller 1 may move toward the upright position due to automatic shifting until the angle between it and the seat 12 is less than 150 degrees, which is disadvantageous for babies aged 0-6 months. Therefore, the problem of automatic shifting of the backrest 11 needs to be overcome.

[0215] In yet another case, it is possible for the user to accidentally operate an operating member such as the pull handle 300 or the sliding handle 300'', causing the adjusting device 2 to accidentally become unlocked, thus posing an accidental danger.

[0216] To overcome these problems and enable the relative positioning between the two components to be reliably maintained or released, the unlocking mechanism according to the present disclosure may further include a safety lock member S100, which is configured to be movable between a safety locking position and a safety unlocking position. In the safety locking 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, relative movement between the first component 11 and the second component 12 is possible.

[0217] In the unlocking mechanism according to the present disclosure, through the double locking of the locking member 100 and the safety lock member S100, even if one of them is accidentally unlocked, the other can remain locked, effectively preventing the adjusting device 2 from accidentally becoming unlocked, and thus avoiding the accidental relative movement between the first component 11 and the second component 12. This can avoid the problem of the backrest (i.e., the first component) 11 jumping out of gear or the user's accidental operation.

[0218] Figures 13 to 36 An embodiment of the unlocking mechanism provided with the locking member 100 and the safety lock member S100 is shown. Among them, 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 component 11 and the second component 12.

[0219] Specifically, as Fig.14 shown, the adjusting device 2 including this unlocking mechanism 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. Among them, as Figure 2 and Figure 3 shown, fixing members, such as screws, can be sequentially passed through the connecting member 26, the backrest plate of the backrest (i.e., the first component) 11, the through holes on the second outer cover 22, and screwed to the screw posts on the inner cover 23 and the first outer cover 21, thereby fixing the adjusting device 2 to the first component 11. However, the present disclosure is not limited thereto. In another embodiment, two or 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 not be provided.

[0220] The adjusting device 2 may further include a reel 24, which is arranged to be rotatable between the inner cover 23 and the second outer cover 22 for the belt 240 (for simplicity, Figures 13 to 36 The strap 240 (not shown) is wound thereon, and both ends of the strap 240 extend outside the adjusting device 2 and are fixed relative to the second member 12 (for example, as Figure 1C shown, fixed to the frame 13 of the stroller 1). As described above, the reel 24 winds or unwinds a part of the strap 240 by its own rotation, thereby changing the effective length of the strap 240, and the increase or decrease of the effective length of the strap 240 can adjust the position of the first member 11 relative to the second member 12 during movement.

[0221] In order to enable the safety lock member S100 to block or not block the rotation of the reel 24, as Fig.14 , Fig.19 , Figure 21 to Figure 24 and Fig.34 , Fig.36 shown, a plurality of reel engaging structures 248 are provided on the reel 24, and a safety lock engaging structure S101 is provided on the safety lock member S100 (see Fig. 20 and Fig.32 ).

[0222] When the safety lock member S100 moves to the safety locking position, as Fig.21 and Fig.23 and Fig.34 shown, the safety lock engaging structure S101 engages with one of the reel engaging structures 248 to block the rotation of the reel 24.

[0223] When the safety lock member S100 moves to the safety unlocking position, as Fig. 22 and Fig.24 and Fig.36 shown, the safety lock engaging structure S101 disengages from the reel engaging structure 248 to not block the rotation of the reel 24.

[0224] In the embodiments shown in Fig.14 , Fig.19 , Figure 21 to Figure 24 and Fig.34 , Fig.36 shown, a ratchet 244 that rotates coaxially with the reel 24 is provided on the reel 24, and the plurality of reel engaging structures 248 are internal teeth provided on the ratchet 244.

[0225] Of course, the present disclosure is not limited to this.

[0226] A gear 246 that rotates coaxially with the reel 24 may also be provided on the reel 24 (see Fig. 11B and Fig. 12B ), and the plurality of reel engaging structures 248 are internal teeth provided on the gear 246.

[0227] Alternatively, the multiple spool engaging structures 248 may be teeth of another ratchet or gear that rotates coaxially with the spool 24, or may be grooves or protrusions provided on the spool 24.

[0228] For facilitating the operation of the safety lock member S100, as Figures 14 to 19 and Fig.31 , Fig.34 , Fig.36 shown, the adjusting device 2 may be provided with a safety lock elastic member S102, which is arranged to apply an elastic force to the safety lock member S100 to drive the safety lock engaging structure S101 to engage with one of the spool engaging structures 248, so as to tend to prevent the spool 24 from rotating by the safety lock member S100.

[0229] In Figures 14 to 19 and Fig.31 , Fig.34 , Fig.36 shown in the embodiment, the safety lock elastic member S102 is a compression spring.

[0230] To ensure that the compression spring serving as the safety lock elastic member S102 acts on the safety lock member S100 along the direction of driving the safety lock engaging structure S101 to engage with the spool engaging structure 248, the safety lock member S100 may be provided with an elastic member fixing portion S103 for the safety lock elastic member S102 to be sleeved thereon, so as to reasonably position the safety lock elastic member S102.

[0231] In Figures 14 to 19 and Fig.31 shown in the embodiment, the movement of the safety lock member S100 between the safety locking position and the safety unlocking position is a vertical movement. To prevent the safety lock member S100 from shifting, the inner cover 23 is provided with a safety lock guiding portion 23A for guiding the movement of the safety lock member S100 therein.

[0232] It should be understood that the safety lock guiding portion 23A may also be provided on the first outer cover 21 or the second outer cover 22.

[0233] To facilitate the user to operate the safety lock member S100, the unlocking mechanism may include a safety lock operating member, which can be operated to drive the safety lock member S100 to move to the safety unlocking position.

[0234] Specifically, in Figures 13 to 28 shown in the embodiment, the safety lock operating member is a rotary knob S300, and in Figures 29 to 36 shown in the embodiment, the safety lock operating member is a push button S300'. Of course, the safety lock operating member may also be other components, as long as it can be operated to drive the safety lock member S100 to move to the safety unlocking position.

[0235] The safety lock operating members S300, S300' can be movably arranged on the first member 11 and can move between an operating member locking position and an operating member unlocking position. In the operating member locking position, the safety lock operating members S300, S300' allow the safety lock member S100 to be held in the safety locking position. In the operating member unlocking position, the safety lock operating members S300, S300' drive the safety lock member S100 to move to the safety unlocking position.

[0236] It should be understood that the safety lock operating members S300, S300' can also be arranged on the second member 12 or other members.

[0237] In one embodiment, the unlocking mechanism can include a safety lock towing member S200, one end of which is connected to the safety lock member S100 and the other end is connected to the safety lock operating members S300, S300', so that the safety lock operating members S300, S300' can drive the safety lock member S100 via the safety lock towing member S200. The safety lock towing member S200 enables the safety lock member S100 and the safety lock operating members S300, S300' to be separated by a certain distance, thereby allowing a more flexible arrangement position for the safety lock operating members S300, S300'.

[0238] In Figures 14 to 28 and Figures 29 to 36 In the illustrated embodiment, the safety lock towing member S200 includes a towing line S220 and a sheath S210 in which the towing line S220 slides.

[0239] It should be understood that the safety lock towing member S200 can adopt other forms of embodiments. For example, the safety lock towing member S200 can adopt a single towing line S220 without providing the sheath S210, or can adopt a rod-shaped member, etc.

[0240] The towing line S220 can be a flexible member capable of withstanding tension, such as a webbing, a drawstring, or a wire, etc., but is not limited thereto.

[0241] In one embodiment, there can be at least two sheaths S210, which are respectively located near both ends of the safety lock towing member S200 and are respectively fixed to guide the towing direction of the towing line S220.

[0242] It should be understood that the sheath S210 can also be a single tubular member that surrounds most of the towing line S220, and both ends of the tubular member are respectively fixed to guide the towing direction of the towing line S220.

[0243] As Figures 14 to 16 and Fig.31 shown, a sheath fixing portion 23B can be provided on the inner cover 23 for fixing the sheath S210 at one end of the safety lock towing member S200 that is connected to the safety lock member S100.

[0244] As needed, a channel through which the towing line S220 can pass may be provided on the inner cover 23.

[0245] To facilitate the connection of the towing line S220 to the safety lock member S100 and / or the safety lock operating members S300, S300', as Fig.25 shown, towing line heads S221 may be respectively provided at both ends of the towing line S220. The diameter of the towing line head S221 is greater than the diameter of the towing line S220.

[0246] Correspondingly, as Fig.14 , Fig.16 , Fig.26 and Fig.31 shown, at least one of the safety lock member S100 and the safety lock operating members S300, S300' may be provided with a towing member fixing portion S230. The towing member fixing portion S230 can accommodate the towing line head S221 and is provided with a towing member channel S240 on its side wall. The width of the towing member channel S240 is less than the diameter of the towing line head S221 but greater than the diameter of the towing line S220, so as to allow the towing line S220 connected to the towing line head S221 to extend out of the towing member fixing portion S230 through the towing member channel S240, thereby realizing the connection of the towing line S220 to the safety lock member S100 and / or the safety lock operating members S300, S300'.

[0247] In an embodiment where the towing line S220 is one, as Figures 14 to 28 shown, one towing member fixing portion S230 may be correspondingly provided on the safety lock member S100. In an embodiment where the towing line S220 is two, as Figures 29 to 36 shown, two towing member fixing portions S230 may be correspondingly provided on the safety lock member S100.

[0248] In Fig.14 the shown embodiment, since the elastic member fixing portion S103 is exactly located in the extending direction of the towing member channel S240, the towing member channel S240 extends through the elastic member fixing portion S103, so that the towing line S220 can extend out of the towing member fixing portion S230.

[0249] Of course, the disclosure is not limited thereto. In another embodiment, the unlocking mechanism may not include the safety lock operating members S300, S300' or the safety lock towing member S200, and the user directly applies an external force to the safety lock member S100 to move the safety lock member S100 to the unlocking position.

[0250] Next, two embodiments of the safety lock operating members S300, S300' of the unlocking mechanism will be described in detail with reference to the drawings.

[0251] First embodiment of the safety lock operating member

[0252] The first implementation of the safety lock operating member is the rotary knob S300 as shown in Figures 13 to 28 Figure.

[0253] In one embodiment, the rotary knob S300 is rotatably mounted on the fixed seat 500, and the fixed seat 500 is connected to the first member 11.

[0254] It should be understood that the rotary knob S300 can also be directly rotatably mounted on the first member 11 without having to be disposed on the fixed seat 500.

[0255] In addition, although Figures 13 to 28 the rotary knob S300 shown is pivotable, the rotary knob S300 can also be a self-rotating knob, and one end of the safety lock traction member S200 can be wound around the knob, so that the safety lock traction member S200 is driven by the self-rotation of the knob.

[0256] In Fig.25 the embodiment shown, a fixed pivot shaft 510 is provided at the top of the fixed seat 500, and the rotary knob S300 is pivotally connected to the fixed pivot shaft 510, so as to facilitate the user to apply a force to the rotary knob S300, so that the rotary knob S300 pivots between the operating member locking position and the operating member unlocking position around the fixed pivot shaft 510, thereby driving the safety lock traction member S200.

[0257] To facilitate the connection of the traction line S220 to the rotary knob S300, in Fig.26 the embodiment shown, a traction member fixing portion S230 and a traction member passage S240 can be provided on the rotary knob S300. The traction member fixing portion S230 can accommodate the traction line head S221, and the traction member passage S240 allows the traction line S220 to pass therethrough.

[0258] The sheath S210 at the end of the safety lock traction member S200 connected to the rotary knob S300 can be fixed to the fixed seat 500.

[0259] A movable safety lock holder S310 can be provided on the fixed seat 500, and it is arranged to hold the rotary knob S300 in the operating member unlocking position.

[0260] To facilitate the movement of the safety lock holder S310, as shown in Fig.25 Figure, a holder receiving portion 520 can be provided on the fixed seat 500 for the safety lock holder S310 to slide therein.

[0261] Of course, the safety lock holder S310 can also be arranged to pivot on the fixed seat 500.

[0262] In Fig.25 , Fig. 27 and Fig.28 In the embodiments shown in Fig.25 , Fig. 27 , and Fig.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 operating member unlocking position, as shown in Fig.28 .

[0263] As shown in Fig. 27 and Fig.28 , the rotary knob blocking structure S301 can be stepped, and the retainer blocking structure S312 can be in the shape of a protrusion that mates with the step (see Fig.25 ), so that the engagement of the two can block the pivoting of the rotary knob S300.

[0264] In order to keep the rotary knob blocking structure S301 engaged with the retainer blocking structure S312, the unlocking mechanism is further provided with a retainer elastomer S311, which is configured to urge the safety lock retainer S310 against the rotary knob S300.

[0265] In Fig.25 the embodiment shown, the retainer elastomer S311 can be a compression spring disposed in the retainer receiving portion 520 to apply an elastic force to the safety lock retainer S310.

[0266] In Fig.25 , Fig. 27 and Fig.28 the embodiments shown, the rotary knob S300 can further be provided with another rotary knob blocking structure S302, which can engage with the retainer blocking structure S312 to hold the rotary knob S300 in the operating member locking position, as shown in Fig. 27 .

[0267] Of course, the present disclosure is not limited to this.

[0268] The safety lock retainer S310 can adopt 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 operating member unlocking position or the operating member locking position.

[0269] When the user does not apply a force to the rotary knob S300, as shown in Fig.21 , Fig. 22 and Fig. 27 , the rotary knob S300 is in the operating member locking position, and the safety lock member S100 is in the safety locking position such that its safety lock engaging structure S101 engages with one of the spool engaging structures 248 on the ratchet 244 (see Fig. 22), so the ratchet 244 is blocked from rotating 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, and the holding member blocking structure S312 of the safety lock holder S310 engages with another rotation knob blocking structure S302 on the rotation knob S300 to hold the rotation knob S300 in the operating member locked position (see Fig. 27 ).

[0270] When the user applies a force to the rotation knob S300, this force needs to overcome the elastic forces of the safety lock elastic member S102 and the holding member elastomer S311 to pivot the rotation knob S300 to the operating member unlocked position, as shown in Fig.23 、 Fig.24 and Fig.28 . The movement of the rotation knob 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 unlocked position. Then, the safety lock engaging structure S101 of the safety lock member S100 disengages from the reel engaging structure 248 (see Fig.24 ), so the ratchet 244 is not blocked by the safety lock member S100. At this time, if the locking member 100 is in the unlocked position and does not block the ratchet 244, the ratchet 244 and the reel 24 where it is located can rotate, and the adjustment device 2 is in the unlocked state. After the rotation knob S300 pivots to the operating member unlocked position, the holding member blocking structure S312 of the safety lock holder S310 engages with the rotation knob blocking structure S301 on the rotation knob S300 to hold the rotation knob S300 in the operating member unlocked position (see Fig.28 ).

[0271] If the user no longer applies a force to the rotation knob S300, the rotation knob S300 will remain in the operating member unlocked position all the time (see Fig.28 ).

[0272] Subsequently, when the user applies a force in the opposite direction to the rotation knob S300, this force only needs to overcome the elastic force of the holding member elastomer S311 to pivot the rotation knob S300 towards the operating member locked position until the holding member blocking structure S312 of the safety lock holder S310 engages with another rotation knob blocking structure S302 on the rotation knob S300 to hold the rotation knob S300 in the operating member locked position, as shown in Fig. 27 .

[0273] Meanwhile, the pivoting of the rotary knob S300 towards the operating member locking position causes the safety lock traction member S200 to no longer exert a force on the safety lock member S100. Thus, the safety lock member S100 moves towards 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.

[0274] Second embodiment of the safety lock operating member

[0275] A second embodiment of the safety lock operating member is a push button S300' slidably mounted on the first member 11 as shown in Figures 29 to 36 and is configured to drive the safety lock member S100 via the safety lock traction member S200.

[0276] 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 along the extension direction of the first member 11 to drive the safety lock traction member S200.

[0277] In addition, in the embodiment shown in Figures 29 to 36 , there are two push buttons S300'. Correspondingly, there are also two traction wires S220, and two traction member fixing parts S230 are correspondingly provided on the safety lock member S100. Traction of the same safety lock member S100 by the two traction wires S220 can make the movement of the safety lock member S100 more stable.

[0278] However, it should be understood that in the second embodiment of the safety lock operating member, only one push button S300', one traction wire S220, and one traction member fixing part S230 may be provided.

[0279] To facilitate the sliding of the push button S300' relative to the first member 11, in the embodiment shown in Figures 30 to 36 , a push button base S302' for the push button S300' to slide therein may be provided on the first member 11.

[0280] In the embodiments shown in Fig.33 and Fig.35 , a push button transmission member S310' is provided between the push button S300' and the safety lock traction member S200, and is configured to transmit the sliding of the push button S300' in the 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 that moves in the second direction (i.e., the direction parallel to the extension direction of the first member 11).

[0281] It should be understood that the first direction and the second direction may be the same.

[0282] In this embodiment, a push button inclined surface S301' may be provided on the push button S300', and a transmission inclined surface S311' may be provided on the push button transmission member S310'. The push button inclined surface S301' and the transmission inclined surface S311' abut against each other, and the inclination directions of both are inclined to the moving direction of the push button S300'.

[0283] To facilitate the connection of the traction wire S220 of the safety lock traction member S200 to the push button transmission member S310', in Fig.33 and Fig.35 In the illustrated embodiment, a traction member fixing portion S230 and a traction member passage S240 may be provided on the push button transmission member S310'. The traction member fixing portion S230 may accommodate the traction wire head S221, and the traction member passage S240 allows the traction wire S220 to pass through it.

[0284] As Fig.33 and Fig.35 shown, the sheath S210 at one end of the safety lock traction member S200 connected to the push button S300' may be fixed to the push button base S302'.

[0285] When the user does not apply a force to the push button S300', as Fig.33 and Fig.34 shown, the push button S300' is located at the operating member locking position, and the push button inclined surface S301' is located above the transmission inclined surface S311' (see Fig.33 ), and the safety lock member S100 is located at the safety locking position so that its safety lock engaging structure S101 engages with one of the reel engaging structures 248 on the ratchet wheel 244 (see Fig.34 ), so that the ratchet wheel 244 is blocked and cannot rotate, and the adjustment device 2 is in a locked state. Moreover, the safety lock elastic member S102 holds the safety lock member S100 at the safety locking position.

[0286] When the user presses the push button S300' and slides it towards the first member 11, the push button inclined surface S301' will abut against the transmission inclined surface S311', and the interaction between the two causes the push button transmission member S310' to slide in a first direction parallel to the extension direction of the first member 11. Thus, the push button transmission member S310' drives the safety lock member S100 via the safety lock traction member S200.

[0287] As Fig.35 and Fig.36 shown, when the push button S300' slides to the operating member unlocking position, the push button inclined surface S301' slides to the lower part of the transmission inclined surface S311' (see Fig.35) The movement of the push button S300' will be 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 unlocking position. As a result, the safety lock engaging structure S101 of the safety lock member S100 disengages from the reel engaging structure 248 (see Fig.36 ), so that the ratchet wheel 244 is not blocked by the safety lock member S100. At this time, if the locking member 100 is in the unlocking position and does not block the ratchet wheel 244, the ratchet wheel 244 and the reel 24 on which it is located can rotate, and the adjusting device 2 is in the unlocking state.

[0288] When the user no longer applies a force to the push button S300', the safety lock member S100 moves to the safety locking 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 locking state. At the same time, the movement of the safety lock member S100 will drive the push button transmission member S310' to slide in the second direction opposite to the first direction via the safety lock traction member S200. Then, the transmission inclined surface S311' of the push button transmission member S310' will abut against the push button inclined surface S301' of the push button S300', and the two interact to cause the push button S300' to return to the operating member locking position.

[0289] Since the features of the present disclosure can be embodied in many forms without departing from its characteristics, it should also be understood that the above embodiments are not limited to any details described above, unless otherwise specified, but should be broadly interpreted as falling within the scope defined by the appended claims. Therefore, all modifications and variations that fall within the scope and boundaries of the claims or equivalent schemes of such scope and boundaries should be covered by the appended claims.

Claims

1. A unlocking mechanism for relieving the relative positioning between a first component and a second component, the unlocking mechanism comprising: A locking member configured to be movable between a locking position and an unlocking position, in the locking position, the locking member blocking the relative movement between the first component and the second component; A safety lock member configured to be movable between a safety locking position and a safety unlocking position, in the safety locking position, the safety lock member blocking the relative movement between the first component and the second component; Wherein, when the locking member is in the unlocking position and the safety lock member is in the safety unlocking position, relative movement is possible between the first component and the second component.

2. The unlocking mechanism according to claim 1, wherein, The unlocking mechanism includes a safety lock operating member that can be operated to drive the safety lock member to the safety unlocking position.

3. The unlocking mechanism according to claim 2, wherein The unlocking mechanism further includes a safety lock traction member, one end of the safety lock traction member being connected to the safety lock member, and the other end of the safety lock traction member being connected to the safety lock operating member, such that the safety lock operating member drives the safety lock member via the safety lock traction member.

4. The unlocking mechanism according to claim 2, wherein, The safety lock operating member is a rotary knob rotatably mounted on a fixed seat, the fixed seat being connected to the first component.

5. The unlocking mechanism according to claim 4, wherein, A movable safety lock retaining member is provided on the fixed seat, the safety lock retaining member being configured to retain the rotary knob in the operating member unlocking position.

6. The unlocking mechanism according to claim 3, wherein, The safety lock operating member is a push button slidably mounted on the first component, the push button being configured to drive the safety lock member via the safety lock traction member.

7. The unlocking mechanism according to claim 6, wherein, A push button transmission member is provided between the push button and the safety lock traction member, the push button transmission member being configured to transmit the sliding of the push button in a first direction to the other end of the safety lock traction member moving in a second direction, Wherein, the first direction and the second direction are the same or different.

8. An adjusting device for adjusting the position of the movement of a first component relative to a second component, the adjusting device being provided on the first component and including the unlocking mechanism according to any one of claims 1 to 7.

9. The adjustment device according to claim 8, wherein, The adjusting device includes: A reel configured to be rotatable, on which a strap is wound, both ends of the strap extending outside the adjusting device and being fixed relative to the second component, the increase or decrease of the effective length of the strap being capable of adjusting the position of the movement of the first component relative to the second component; Wherein, a plurality of reel engaging structures are provided on the reel, and a safety lock engaging structure is provided on the safety lock member, 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 block the rotation of the reel.

10. A baby stroller with a seat, wherein the adjustment device as claimed in claim 8 or 9 is installed on the baby stroller, where The unlocking mechanism of the adjusting device is used to unlock the adjusting device, the first component being the backrest of the seat and the second component being the seat portion of the seat.

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