EP4615739A1

EP4615739A1 - Unlocking mechanism, adjusting device, reel driver and baby stroller, box, baby carrying strap

Info

Publication number: EP4615739A1
Application number: EP23805037.1A
Authority: EP
Inventors: Zhengwen GUO; Hongtao Yin; Mingxing SUN; Linhai Shan; Erxue WANG; Chinming Cheng
Original assignee: Wonderland Switzerland AG
Current assignee: Wonderland Switzerland AG
Priority date: 2022-11-11
Filing date: 2023-11-10
Publication date: 2025-09-17
Also published as: AU2023377348A1; CN221775903U; KR20250094698A; TW202423755A; JP2025537731A; CN118025286A; WO2024100289A1; DE112023004740T5

Abstract

The disclosure provides an unlocking mechanism, an adjusting device assembled with the unlocking mechanism, and a reel driver, as well as a baby stroller, a box and a baby carrying strap assembled with the unlocking mechanism and the adjusting device, wherein the unlocking mechanism serves to release a relative locating between a first member and a second member. The unlocking mechanism includes: a locking component, arranged to be able to move between a locked position and an unlocked position, in the locked position, the locking component obstructs a relative movement between the first member and the second member, and in the unlocked position, the locking component allows the relative movement between the first member and the second member; and an operating component, arranged to be able to directly or indirectly drive the locking component to move toward the unlocked position under action of an external force. The unlocking mechanism according to the disclosure can release the relative locating between the two members.

Description

UNLOCKING MECHANISM, ADJUSTING DEVICE, REEL DRIVER AND BABY STROLLER, BOX, BABY CARRYING STRAP

TECHNICAL FIELD

[0001] The present disclosure relates to an unlocking mechanism, and also relates to an adjusting device and a reel driver respectively provided with the unlocking mechanism, as well as a baby stroller, a box and a baby carrying strap provided with the unlocking mechanism and the adjusting device.

BACKGROUND

[0002] How to realize relative locating and de-locating between two members is a common problem in structural design. For example, a relative locating and relative pivoting between a backrest and a sitting part of a seat of a baby stroller in the market is generally required, such that the backrest of the seat can be pivoted to a proper position in respect to the sitting part, so as to allow the baby to sit or lie flat on the baby stroller, or to allow the baby stroller to meet some use requirements, which greatly expands the practical functions of the baby stroller. For another example, a relative locating and relative movement between a cover of a box and a body of the box may be required to adjust an opening and/or closing degree of the box. For another example, a relative locating and relative movement between a carrying component baby and a supporting component of a carrying strap may be required to achieve a comfortable degree for the user or the baby.

SUMMARY

[0003] A purpose of the disclosure s to provide an unlocking mechanism which can release a relative locating between two members.

[0004] According to a scheme of the disclosure, an unlocking mechanism for releasing a relative locating between a first member and a second member is provided. The unlocking mechanism comprises: a locking component, arranged to be able to move between a locked position and an unlocked position, in the locked position, the locking component obstructs a relative movement between the first member and the second member, and in the unlocked position, the locking component allows the relative movement between the first member and the second member; and an operating component, arranged to be able to directly or indirectly drive the locking component to move toward the unlocked position under action of an external force.

[0005] In an embodiment, the unlocking mechanism further comprises a bringing component, a first end of the bringing component is connected to the locking component, and a second end of the bringing component is connected to the operating component, wherein the operating component is arranged to be able to bring the locking component to move toward the unlocked position via the bringing component under action of the external force.

[0006] In an embodiment, the operating component is arranged such that the external force exerted thereto has a function of making the first member move in respect to the second member. [0007] In an embodiment, the operating component is arranged to be able to bring the locking component to move to the unlocked position under action of the external force, and able to bring the first member to move in respect to the second member under action of the external force in a same direction.

[0008] In an embodiment, the operating component is a pull handle being able to drive the bringing component to move by being pulled.

[0009] In an embodiment, the operating component is a slide handle driving the bringing component to move by sliding on a fixed base, and the fixed base is arranged on the first member.

[0010] In an embodiment, the fixed base is arranged on the first member through a fixing pin, and the slide handle is correspondingly provided with a chute for the fixing pin to pass therethrough.

[0011] In an embodiment, a top of the fixed base has a flat surface extending horizontally, and the slide handle has an operating component force exertion part also extending horizontally.

[0012] In an embodiment, the flat surface of the top of the fixed base is provided with fixed base ribs, and a lower surface of the operating component force exertion part of the slide handle is provided with slide handle ribs.

[0013] In an embodiment, the operating component force exertion part is in a shape of a trigger.

[0014] In an embodiment, the fixed base includes a locating structure, and the locating structure is arranged to limit a sliding path of the slide handle. [0015] In an embodiment, the locating structure is two locating protrusions adjacent to both sides of the slide handle.

[0016] In an embodiment, a return spring is arranged between the fixed base and the slide handle, and the return spring is arranged to drive the slide handle to return an initial position where the bringing component has not been driven.

[0017] In an embodiment, the first member and the second member are relatively pivoted and a pivoted position of the first member in respect to the second member is adjusted by an adjusting device arranged on the first member, and the unlocking mechanism serves to unlock the adjusting device, and the fixed base and a casing of the adjusting device are integrally formed.

[0018] In an embodiment, the operating component is a push handle driving the bringing component to move by sliding along a direction parallel to an extending direction of the first member.

[0019] In an embodiment, the bringing component is a flexible member.

[0020] In an embodiment, the bringing component passes around a guider, and the guider is arranged to guide the bringing component to bring the locking component to move toward the unlocked position, such that the operating component is able to be pulled in multiple operable directions.

[0021] In an embodiment, the bringing component is a rigid member.

[0022] In an embodiment, the bringing component is arranged on the locking component, and the push handle is engaged with the bringing component, such that sliding of the push handle is able to bring the locking component to move toward the unlocked position.

[0023] In an embodiment, the locking component has a clamping portion.

[0024] In an embodiment, movement of the locking component is a pivoting movement, a sliding movement, or a combined movement of the pivoting movement and the sliding movement.

[0025] In an embodiment, the first member and the second member are relatively pivoted and a pivoted position of the first member in respect to the second member is adjusted by an adjusting device, and the unlocking mechanism serves to unlock the adjusting device.

[0026] In an embodiment, the unlocking mechanism further comprises a pulley arranged on the adjusting device, and the bringing component is arranged to pass around the pulley.

[0027] In an embodiment, the pulley is a cylindrical rotating body freely rotatable around a horizontal axis, and the bringing component extends from the locking component and out of the adjusting device after changing direction via the pulley.

[0028] In an embodiment, the operating component is arranged to be able to directly drive the locking component to move toward the unlocked position under action of the external force.

[0029] In an embodiment, the operating component moves along a direction parallel to a extending direction of the first member, and the operating component is provided with an operating component drive part, and the operating component is provided with an operating component drive part, the locking component is provided with a locking component drive part, and the operating component drive part and the locking component drive part are arranged to be able to interact with each other, such that a movement of the operating component is able to drive the locking component to move.

[0030] In an embodiment, the operating component is a slide handle driving the locking component to move by sliding on a fixed base, and the fixed base is arranged on the first member.

[0031] In an embodiment, movement of the locking component is a pivoting movement.

[0032] In an embodiment, one of the locking component drive part and the operating component drive part is a locking component drive slot, and the other is an operating component drive pin passing through the locking component drive slot, an extending direction of the locking component drive slot is inclined to a moving direction of the slide handle, such that a movement of the slide handle is able to drive the locking component to be pivoted.

[0033] In an embodiment, the first member and the second member are relatively pivoted and a pivoted position of the first member in respect to the second member is adjusted by an adjusting device arranged on the first member, and the unlocking mechanism serves to unlock the adjusting device, and the operating component is a slide handle driving the locking component to move by sliding on a casing of the adjusting device.

[0034] In an embodiment, movement of the locking component is a pivoting movement, one of the locking component drive part and the operating component drive part is a locking component drive protrusion with a locking component inclined surface arranged thereon, and the other is an operating component drive recess with an operating component inclined surface arranged thereon, the locking component inclined surface and the operating component inclined surface abut against each other, and inclined directions of the locking component inclined surface and the operating component inclined surface are inclined to a moving direction of the slide handle, such that a movement of the slide handle is able to drive the locking component to be pivoted.

[0035] In an embodiment, the slide handle is provided with an operating component guide part, and the casing the adjusting device is provided with a casing guide part cooperating with the operating component guide part, so as to guide the slide handle moving on the casing.

[0036] In an embodiment, the operating component guide part is arranged to be two sides of the slide handle, and the casing guide part is arranged to be two locating protrusions on the casing to allow the two sides of the slide handle to slide therein.

[0037] In an embodiment, each of the two sides is respectively provided with an elastic fin being elastically retractable inward, and a width between outer edges of the two elastic fins is variable along the moving direction of the slide handle, each of the two locating protrusions is respectively provided with a casing guide face inclined to the moving direction of the slide handle, such that after the two sides are assembled on the two locating protrusions, an elastic pushing action between the elastic fins and the casing guide faces will drive the slide handle to move in a direction away from the locking component.

[0038] In an embodiment, the operating component is provided with an operating component force exertion part extending in a direction perpendicular to the moving direction of the slide handle and away from the first member, and the operating component force exertion part is in a shape of a trigger.

[0039] In an embodiment, the casing of the adjusting device is provided with a casing extension extending in a direction perpendicular to the moving direction of the slide handle and away from the first member, and the casing extension is arranged between the operating component force exertion part and the operating component drive recess of the operating component.

[0040] In an embodiment, a return spring is arranged between the casing of the adjusting device and the slide handle, the return spring is arranged to drive the slide handle to return an initial position where the locking component has not been driven.

[0041] In an embodiment, the unlocking mechanism serves to adjust a seat of a baby stroller, the first member is a backrest of the seat, and the second member is a sitting part of the seat.

[0042] In an embodiment, the operating component is arranged to be able to bring the locking component to move to the unlocked position under action of an external force when receiving the external force perpendicular to or inclined to the extending direction of the backrest, and the operating component is also able to bring the backrest to be pivoted in respect to the sitting part under action of the external force external force in the same direction.

[0043] In an embodiment, the unlocking mechanism is arranged at a position above middle of the backrest.

[0044] In an embodiment, the unlocking mechanism serves to adjust an opening and/or closing degree of a box, the first member is a covering part of the box, the second member is a box body of the box, and the covering part is able to move in respect to the box body.

[0045] In an embodiment, movement of the covering part in respect to the box body is a pivoted opening and/or closing, a slid opening and/or closing, or a rotated opening and/or closing.

[0046] In an embodiment, the unlocking mechanism serves to adjust a baby carrying strap, the baby carrying strap includes a carrying component capable of being worn on a user and a supporting component for bearing a baby, the supporting component is connected to the carrying component so that angle of the supporting component in respect to the carrying component is able to be adjusted, the first member is the supporting component, and the second member is the carrying component.

[0047] The disclosure also provides an adjusting device being provided with the above unlocking mechanism.

[0048] In an embodiment, the adjusting device further comprises: a reel, arranged to be rotatable for a binding strap to be wound thereon, and both ends of the binding strap extend out of the adjusting device.

[0049] In an embodiment, the reel includes a first disc and a second disc, and the first disc and the second disc are connected by an intermediate connecting part, such that a winding groove is formed between the first disc and the second disc.

[0050] In an embodiment, the binding strap is arranged as two binding straps, and the reel is correspondingly provided with two winding grooves.

[0051] In an embodiment, the first disc is provided with two guiding grooves.

[0052] In an embodiment, the unlocking mechanism is a one-way unlocking mechanism only performing unlocking when a relative pivoting toward one direction between the first member and the second member is obstructed.

[0053] In an embodiment, the reel is provided with a one-way ratchet wheel rotating coaxially, and the clamping portion of the locking component is cooperating with ratchet teeth on the ratchet wheel, such that rotation of the ratchet wheel in an unwinding direction is able to be obstructed by the locking component, resulting in that the reel is unable to rotate in the unwinding direction.

[0054] In an embodiment, the ratchet wheel on the reel is a big-tooth ratchet, a ratchet tooth inclination angle of the big-tooth ratchet is 20° to 25°, and a number of the ratchet teeth is 8 to 15.

[0055] In an embodiment, the ratchet tooth inclination angle of the big-tooth ratchet is 21.5°, and the number of the ratchet teeth is 12.

[0056] In an embodiment, an edge of a reel surface of the reel for the ratchet to be disposed thereon is provided with a guide portion for guiding the locking component to return to the locked position.

[0057] In an embodiment, the unlocking mechanism is a two-way unlocking mechanism performing unlocking when a relative pivoting between the first member and the second member is obstructed.

[0058] In an embodiment, the reel is provided with a gear rotating coaxially, and the clamping portion of the locking component is cooperating with teeth on the gear, such that rotation of the gear is able to be obstructed by the locking component, resulting in that the reel is unable to rotate.

[0059] In an embodiment, the operating component is a slide handle formed integrally with the locking component.

[0060] In an embodiment, the adjusting device comprises a slide handle elastic component, and the slide handle elastic component is arranged to drive an integrated member formed by the slide handle and the locking component to move to the locked position to obstruct rotation of the gear.

[0061] In an embodiment, the reel is provided with a barbed ratchet rotating coaxially, each ratchet tooth of the barbed ratchet is provided with a limit barb, and the clamping portion of the locking component is provided with limit recesses cooperating with the limit barbs, such that rotation of the barbed ratchet in two directions is able to be obstructed by the locking component. [0062] In an embodiment, the adjusting device further comprises: a clockwork spring, located in an accommodating hole within the reel and arranged to drive the reel to rotate in a winding direction opposite to the unwinding direction, and the clockwork spring is wound tightly when the reel rotates in the unwinding direction. [0063] In an embodiment, an auxiliary disc is arranged on an outer side of the accommodating hole of the reel, and the auxiliary disc is arranged to obstruct the clockwork spring.

[0064] In an embodiment, the auxiliary disc includes a body, and a first limit sheet and a second limit sheet extending outwardly from an outer circumference of the body, and the first limit sheet and the second limit sheet are spaced apart axially, so as to form a limit passage for the binding strap to pass through.

[0065] In an embodiment, the first limit sheet and the second limit sheet are only arranged at an outer circumference of a half of the auxiliary disc.

[0066] In an embodiment, the first limit sheet and the second limit sheet are staggered circumferentially.

[0067] In an embodiment, the binding strap is arranged as a member having elasticity itself.

[0068] In an embodiment, the adjusting device further comprises: a second outer cover and an inner cover, the reel is arranged between the inner cover and the second outer cover, and both ends of the binding strap extend out of the inner cover.

[0069] In an embodiment, a second outer cover and an inner cover, the reel is arranged between the inner cover and the second outer cover, and both ends of the binding strap extend out of the inner cover.

[0070] In an embodiment, the locking component is arranged in the through hole.

[0071] In an embodiment, the adjusting device further comprises: a first outer cover, located outside the inner cover.

[0072] In an embodiment, the first outer cover is provided with a guiding hole for the bringing component to pass therethrough.

[0073] In an embodiment, the adjusting device further comprises an elastic component, and the elastic component is arranged to drive the locking component to move toward the locked position.

[0074] In an embodiment, the adjusting device includes a casing, the reel is located in the casing and is provided with a ratchet wheel or gear rotating coaxially, and the clamping portion of the locking component is able to obstruct the ratchet wheel or the gear from rotating, the casing is provided with a casing through hole penetrating therethrough, such that a reel obstructer is able to pass through the casing through hole from an outside of the adjusting device to obstruct the ratchet wheel or the gear from rotating. [0075] In an embodiment, the reel obstructer is a connected reel obstructer formed integrally with the casing, and the connected reel obstructer includes: a connected obstructing part, being able to passe through the casing through hole to be engaged with ratchet teeth of the ratchet wheel or teeth of the gear; a connected bending part, the connected reel obstructer is formed integrally with the casing via the connected bending part, and the connected bending part is arranged such that the connected obstructing part is able to move between an engaged position where the connected obstructing part is engaged with the ratchet teeth of the ratchet wheel or the teeth of the gear and a disengaged position where the connected obstructing part is disengaged from the ratchet teeth of the ratchet wheel or the teeth of the gear.

[0076] In an embodiment, the connected reel obstructer is arranged to be capable of being separated from the casing by cutting off the connected bending part.

[0077] In an embodiment, the reel obstructer is an independent reel obstructer independent from the casing, and the independent reel obstructer includes an independent obstructing part being able to be engaged with the ratchet teeth of the ratchet wheel or the teeth of the gear.

[0078] In an embodiment, the casing includes a casing middle connecting hole above the casing through hole, and the independent reel obstructer includes a middle connected protrusion being able to be connected to the casing middle connecting hole.

[0079] In an embodiment, the casing includes a casing lower connecting hole below the casing through hole, and the independent reel obstructer includes a lower connected protrusion being able to be connected to the casing lower connecting hole.

[0080] In an embodiment, the operating component is a push handle driving the bringing component to move by sliding along a direction parallel to the extending direction of the first member, and the bringing component is a rigid member, the bringing component is arranged on the locking component, and the push handle is engaged with the bringing component, such that sliding of the push handle is able to bring the locking component to move toward the unlocked position.

[0081] The disclosure further provides a reel driver the reel driver, which is arranged to be able to drive the reel in the above adjusting device.

[0082] In an embodiment, the reel driver comprises: a reel driver body; and reel driver engaging parts, being arranged on the reel driver body, and being able to be engaged with reel engaging parts arranged on the reel. [0083] In an embodiment, one of the reel driver engaging parts and the reel engaging parts is engaging bulges, and the other is engaging concaves.

[0084] In an embodiment, the reel driver body has a cylindrical shape, and is arranged to be able to be in accommodated in an accommodating hole within the reel.

[0085] In an embodiment, there are two reel driver engaging parts, and the two reel driver engaging part are respectively arranged at two extending parts extending radially outward from the reel driver body, so as to be respectively engaged with two reel engaging parts arranged on the reel.

[0086] In an embodiment, the two reel driver engaging parts are arranged symmetrically in respect to a rotation center of the reel.

[0087] In an embodiment, the reel driver comprises a reel driver operating part, and the reel driver operating part is arranged to be able to drive the reel driver to rotate under action of the external force.

[0088] In an embodiment, the reel driver operating part is a rocker arranged on one of the extending parts extending radially outward from the reel driver body.

[0089] The disclosure further provides a baby stroller with a seat, which is assembled with the above adjusting device and the above unlocking mechanism, wherein the unlocking mechanism serves to unlock the adjusting device, the first member is a backrest of the seat, and the second member is a sitting part of the seat.

[0090] In an embodiment, positions to which the backrest is able to be rotated in respect to the sitting part include a contact position, an upright position, a lying position, and another suitable position between any two of the three positions.

[0091] In an embodiment, the backrest of the seat is connected to a part of the baby stroller located below the backrest through an anti-skip connecting component.

[0092] In an embodiment, one end of the anti-skip connecting component is connected to the operating component disposed on the backrest, and the other end of the anti-skip connecting component is connected to a food basket of the baby stroller.

[0093] In an embodiment, the anti-skip connecting component is an elastic band with elasticity.

[0094] The disclosure additionally provides a box, which is provided with the above unlocking mechanism.

[0095] In an embodiment, the box is assembled with the above adjusting device, and the adjusting device serves to adjust a position of the covering part in respect to the box body.

[0096] In an embodiment, the box is assembled with a latch mechanism, the latch mechanism includes a locating component in cooperating with the locking component of the unlocking mechanism, and by operating the unlocking mechanism to make the locking component be engaged or disengaged in respect to the locating component, the latch mechanism is locked and unlocked, such that the covering part is able to move in respect to the box body.

[0097] The disclosure additionally provides a baby carrying strap, which is assembled with the above adjusting device and the above unlocking mechanism, wherein the adjusting device is mounted inside the supporting component, the binding strap of the adjusting device is connected to the carrying component, and the adjusting device serves to adjust an angle of the supporting component in respect to the carrying component.

[0098] Purposes, features, aspects and advantages of the disclosure will become more apparent from the following detailed description of the disclosure in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0099] The accompanying drawings are included herein for providing a further understanding of the disclosure and are incorporated in and constitute a part of this specification, which illustrate embodiments of the disclosure and together with the description below serve to explain the concept of the disclosure.

[00100] In the accompanying drawings:

[00101] Fig. 1 is a schematic view of a baby stroller assembled with an adjusting device according to the disclosure.

[00102] Figs. 2 and 3 are exploded schematic views of a first embodiment of the adjusting device adopting an unlocking mechanism according to the disclosure respectively viewed from two angles.

[00103] Figs. 4 and 5 are schematic external views of the adjusting device shown in Fig. 2 respectively viewed from two angles.

[00104] Figs. 6A and 6B are schematic views of a reel of the adjusting device according to the disclosure respectively viewed from two angles.

[00105] Figs. 7A and 7B are schematic views of an auxiliary disc of the adjusting device according to the disclosure respectively viewed from two angles.

[00106] Figs. 8, 9 and 10 are schematic views of an internal structure of the adjusting device shown in Fig. 2 respectively viewed from three angles.

[00107] Figs. 11 A and 12A are schematic views of a locking component of the adjusting device shown in Fig. 2 respectively in a locked position and an unlocked position.

[00108] Figs. 11B and 12B are schematic views of another embodiment of the adjusting device.

[00109] Figs. 13 and 14 are schematic views of a working principle of the adjusting device shown in Fig. 2.

[00110] Fig. 15 is a schematic external view of the adjusting device shown in Fig. 2 viewed from another angle.

[00111] Fig. 16 is an installation schematic view of the adjusting device shown in Fig. 15.

[00112] Fig. 17 is a sectional view of the adjusting device shown in Fig. 15.

[00113] Fig. 18 is a schematic view of another example of a first embodiment of a pull handle in an unlocking mechanism according to the disclosure.

[00114] Fig. 19 shows a first embodiment of the unlocking mechanism according to the disclosure including a pulley disposed on a first outer cover.

[00115] Fig. 20 shows the first embodiment of the unlocking mechanism according to the disclosure includes a pulley disposed on an inner cover.

[00116] Fig. 21 is an exploded schematic view of the adjusting device adopting a second embodiment of an unlocking mechanism according to the disclosure.

[00117] Fig. 22A is a schematic view of the adjusting device adopting a first scheme of a third embodiment of the unlocking mechanism according to the disclosure.

[00118] Figs. 22B and 22C are schematic views of another embodiment of the adjusting device adopting the first scheme of the third embodiment of the unlocking mechanism according to the disclosure.

[00119] Fig. 23 is a schematic view of the adjusting device shown in Fig. 22A partially disassembled.

[00120] Figs. 24 and 25 are respectively front and back schematic views of the adjusting device shown in Fig. 22A.

[00121] Fig. 26A is a sectional view of the adjusting device shown in Fig. 22A. [00122] Fig. 26B is a sectional view of the adjusting device shown in Figs. 22 and 22C.

[00123] Fig. 27 is a schematic view of the adjusting device adopting a fourth embodiment of the unlocking mechanism according to the disclosure.

[00124] Figs. 28 and 29 are schematic views of the adjusting device shown in Fig. 27 respectively in a locked state and an unlocked state.

[00125] Fig. 30 is an exploded schematic view of the adjusting device shown in Fig. 27.

[00126] Fig. 31 is a schematic view of a box adopting the unlocking mechanism according to the disclosure.

[00127] Fig. 32 is a schematic view of the box shown in Fig. 31 viewed from another angle.

[00128] Fig. 33 is a schematic view of the box shown in Fig. 31 being opened.

[00129] Fig. 34 is a schematic view of the box adopting the unlocking mechanism according to another embodiment of the disclosure.

[00130] Fig. 35 is a schematic view of a baby carrying strap adopting the unlocking mechanism according to the disclosure.

[00131] Fig. 36 is a schematic view of the baby carrying strap shown in Fig. 35 viewed from another angle.

[00132] Fig. 37 is a schematic view of the baby carrying strap of the supporting component shown in Fig. 35 with angle adjusted in respect to a shoulder strap.

[00133] Fig. 38 is a schematic view of the baby carrying strap shown in Fig. 35 being completely untied.

[00134] Fig. 39 is a schematic view of the adjusting device adopting a first scheme of a fifth embodiment of the unlocking mechanism according to the disclosure installed on a backrest.

[00135] Fig. 40 is a schematic view of the adjusting device and the backrest shown in Fig. 39 viewed from another angle.

[00136] Fig. 41 is another schematic view of the adjusting device and the backrest shown in Fig. 39, in which parts of an outer cover and an inner cover are removed from the adjusting device.

[00137] Fig. 42 is a schematic view of a locking component in the unlocking mechanism according to the first scheme of the fifth embodiment of the disclosure.

[00138] Fig. 43 is a schematic view of an operating component in the first scheme of the fifth embodiment of the unlocking mechanism according to the disclosure. [00139] Fig. 44 shows another installation of the adjusting device according to the disclosure.

[00140] Fig. 45 shows the installation of the adjusting device according to the disclosure shown in Fig. 44 from another angle.

[00141] Fig. 46 is a schematic view of the adjusting device adopting a second scheme of the third embodiment of the unlocking mechanism according to the disclosure installed on the backrest.

[00142] Fig. 47 is a schematic view of the adjusting device shown in Fig. 46.

[00143] Fig. 48 is a rear view of the adjusting device shown in Fig. 46.

[00144] Fig. 49 is an exploded schematic view of the adjusting device shown in Fig. 46.

[00145] Fig. 50 is a schematic view of the adjusting device adopting the second scheme of the fifth embodiment of the unlocking mechanism according to the disclosure installed on the backrest.

[00146] Fig. 51 is a schematic view of the adjusting device shown in Fig. 50.

[00147] Fig. 52 is a schematic view of the adjusting device shown in Fig. 50 viewed from another angle.

[00148] Fig. 53 is a schematic view of the locking component in the second scheme of the fifth embodiment of the unlocking mechanism according to the disclosure.

[00149] Fig. 54 is a schematic view of the operating component in the unlocking mechanism according to the second scheme of the fifth embodiment of the disclosure.

[00150] Fig. 55 is an exploded schematic view of the adjusting device shown in Fig. 50.

[00151] Fig. 56 is a schematic view of the adjusting device shown in Fig. 46 installed on the backrest of the baby stroller.

[00152] Fig. 57 is a schematic view of a ratchet wheel on a locking component obstructing reel.

[00153] Fig. 58 is a schematic view of the ratchet wheel on the locking component obstructing reel viewed from another angle.

[00154] Fig. 59 is a schematic view of a casing of the adjusting device with a connected reel obstructer formed thereon.

[00155] Fig. 60 is another schematic view of the casing of the adjusting device with a connected reel obstructer formed thereon.

[00156] Fig. 61 is a schematic view of the connected reel obstructer on the casing of the adjusting device obstructing the ratchet wheel.

[00157] Fig. 62 is a schematic view of the connected reel obstructer on the casing of the adjusting device obstructing the ratchet wheel, in which a part of the casing of the adjusting device is removed.

[00158] Fig. 63 is a schematic view of the connected reel obstructer on the casing of the adjusting device obstructing the ratchet wheel viewed from another angle, in which a part of the casing of the adjusting device is removed.

[00159] Fig. 64 is a schematic view of an independent reel obstructer connected to the casing of the adjusting device obstructing the ratchet wheel.

[00160] Fig. 65 is a schematic view of the adjusting device and the independent reel obstructer.

[00161] Fig. 66 is a schematic view of the independent reel obstructer connected to the casing of the adjusting device obstructing the ratchet wheel, in which a part of the casing of the adjusting device is removed.

[00162] Fig. 67 is a schematic view of another independent reel obstructer connected to the casing of the adjusting device obstructing the ratchet wheel.

[00163] Fig. 68 is a schematic view of the adjusting device and another independent reel obstructer.

[00164] Fig. 69 is a schematic view of another independent reel obstructer connected to the casing of the adjusting device obstructing the ratchet wheel, in which a part of the casing of the adjusting device is removed.

[00165] Fig. 70 is a schematic view of the reel driver according to the disclosure while being engaged with the reel in the adjusting device.

[00166] Fig. 71 is a schematic view of the reel driver according to the disclosure while not being engaged with the reel in the adjusting device.

[00167] Fig. 72 is a schematic view of the reel driver according to the disclosure while being engaged with the reel.

[00168] Fig. 73 is a schematic view of the reel driver according to the disclosure while being engaged with the reel viewed from another angle.

[00169] Fig. 74 is a schematic view of a baby stroller assembled with another embodiment of the adjusting device according to the disclosure. [00170] Fig. 75 is a schematic view of the baby stroller shown in Fig. 74 from another angle.

[00171] Fig. 76 is a side view of the baby stroller shown in Fig. 74.

[00172] Fig. 77 is a schematic view of the adjusting device adopting a first anti-skip scheme.

[00173] Fig. 78 is a schematic view of the adjusting device shown in Fig. 77 with an inner cover removed, in which a clamping portion of the locking component is engaged with a gear on the reel.

[00174] Fig. 79 is a schematic view of the adjusting device shown in Fig. 77 with the inner cover removed, in which the clamping portion of the locking component is disengaged from the reel on the gear.

[00175] Fig. 80 is a front schematic view of the adjusting device shown in Fig. 78.

[00176] Fig. 81 is a side sectional view of the adjusting device shown in Fig. 78.

[00177] Fig. 82 is a side sectional view of the adjusting device shown in Fig. 79.

[00178] Fig. 83 is a schematic view of the adjusting device adopting a second anti-skip scheme.

[00179] Fig. 84 is a schematic view of the adjusting device adopting a third anti-skip scheme.

[00180] Fig. 85 is a schematic view of the reel in the adjusting device shown in Fig. 84.

[00181] Fig. 86 is a side sectional view of the reel and the locking component shown in Fig. 85.

[00182] Fig. 87 is a schematic view of the baby stroller adopting a fourth anti-skip scheme.

DETAILED DESCRIPTION

[00183] The present disclosure will be described in detail by referring to the accompanying drawings.

[00184] It should be understood, in the following description of embodiments, directional terms such as “upper,” “lower,” and “top” are only some schematic descriptions in referring to the accompanying drawings, and do not limit the directional and positional relationship of the related objects or elements.

[00185] The unlocking mechanism according to the disclosure serves to release relative locating between a first member and a second member, so that the first member and the second member can move in respect to each other. It should be understood, the unlocking mechanism according to the disclosure can be applied to occasions requiring unlocking the relative locating between two members in various fields. For example, the first member and the second member may be a backrest and a sitting part of a baby stroller or a backrest and a sitting part of a safety seat, or a covering (e.g., a door or cover) which covers an opening and a main body of a box, respectively, and may also be an adjusting device of a baby carrying strap. In addition, the first member and the second member unlocked by the unlocking mechanism according to the disclosure can be one is fixed and the other is movable, or can be both being movable.

[00186] In order to more clearly describe the unlocking mechanism according to the disclosure, the following description will firstly take the occasion where the unlocking mechanism is applied to a baby stroller as an example.

[00187] The baby stroller to which the unlocking mechanism is applied.

[00188] Fig. 1 shows a baby stroller 1. In this embodiment, the first member is the backrest 11 of the seat of the baby stroller, and the second member is the sitting part 12 of the seat. The movement of the backrest 11 in respect to the sitting part 12 is a pivoting movement. For example, the backrest 11 is pivoted, in respect to the sitting part 12, to a contact position where the backrest 11 contacts the sitting part 12, or to an upright position, or to a lying position. In other words, the positions to which the backrest 11 can be pivoted in respect to the sitting part 12 include a contact position, an upright position, a lying position, and another suitable position between any two of the three positions.

[00189] The position to which the backrest 11 is pivoted in respect to the sitting part 12 of the seat can be adjusted by an adjusting device 2, and the adjusting device 2 performs unlocking by an unlocking mechanism according to the disclosure.

[00190] In the disclosure, the “upright position” refers to a position to which the backrest 11 is pivoted in respect to the sitting part 12 where a baby is allowed to sit straightly on the baby stroller, e.g., an included angle of the backrest 11 in respect to the sitting part 12 is about 90 degrees in such position, but the disclosure is not limited thereto. The “lying position” refers to a position to which the backrest 11 is pivoted in respect to the sitting part 12 where a baby is allowed to lie flat on the baby stroller, e.g., an included angle of the backrest 11 in respect to the sitting part 12 is about 180 degrees in such position, but the disclosure is not limited thereto. It should be understood, in the disclosure, the positions to which the backrest 11 can be pivoted in respect to the sitting part 12 include the contact position, the upright position, the lying position, and other suitable positions between the three positions. The “suitable position” here refers to a position to which the backrest 11 is pivoted in respect to the sitting part 12 where a baby is allowed to sit or he comfortably on the baby stroller or the baby stroller is allowed to satisfy some practical requirements, such as folding the seat or the baby stroller.

[00191] Hereinafter, the situation where the backrest 11 is pivoted between the upright position and the lying position in respect to the sitting part 12 (including the situation of being pivoted to the upright position or the lying position) will be described as an example.

[00192] In order to facilitating description, the direction facing the seat is defined as front, and the direction facing the seat is defined as back in the disclosure.

[00193] The adjusting device including the unlocking mechanism.

[00194] It should be understood, in the embodiment shown in Fig. 1, the adjusting device 2 according to the disclosure serves to adjust a pivoted position of the backrest 11 of the seat of the baby stroller in respect to the sitting part 12 of the seat. However, the disclosure is not limited thereto, furthermore, the adjusting device 2 according to the disclosure can also serve to adjust the position between other two members, e.g., to adjust a pivoted position of a backrest of another seat (e.g., a safety seat) in respect to the sitting part, or to adjust position of a box cover in respect to a box body.

[00195] As shown in Fig. 1, the adjusting device 2 is arranged on a rear side of the backrest 11 of the baby stroller 1. Of course, the adjusting device 2 may also be arranged at other suitable positions of the baby stroller 1, as long as it is convenient for the user to operate.

[00196] In the embodiment shown in Figs. 2 to 5, the adjusting device 2 may include a first outer cover 21, a second outer cover 22, and an inner cover 23 between the first outer cover 21 and the second outer cover 22, and the first outer cover 21, the second outer cover 22, and the inner cover 23 constitute a casing 20 of the adjusting device 2 (see Figs. 4 and 5). However, the 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 member. In yet another embodiment, the first outer cover 21 may not be provided.

[00197] The adjusting device 2 may further include a reel 24. The reel 24 is arranged to be rotatable between the inner cover 23 and the second outer cover 22 for a binding strap 240 (see Fig. 6A) to be wound thereon. Both ends of the binding strap 240 extend out of the casing 20 (as shown in Figs. 4 and 5) and are fixed a frame 13 of the baby stroller 1. It should be noted, the binding strap 240 is only schematically shown. In the embodiment shown in Figs. 6A and 6B, the reel 24 includes a first disc 24A and a second disc 24B which are annular, and the first disc 24A and the second disc 24B are connected by an intermediate connecting part 24C, such that a winding groove 241 extending circumferentially is formed between the first disc 24A and the second disc 24B. The first disc 24A and the intermediate connecting part 24C together form an accommodating hole 242 inside the reel 24, and two guiding grooves 245, 245' are disposed on the first disc 24A. The guiding grooves 245, 245' can be symmetrically arranged on the first disc 24 A, as shown in Fig. 6A, or asymmetrically arranged, and their positions can be adjusted according to actual requirements.

[00198] The adjusting device 2 may further include a clockwork spring 25, as shown in Fig. 2. The clockwork spring 25 is located inside the reel 24, for example, it may be arranged in the accommodating hole 242 within the reel 24, as shown in Fig. 6A.

[00199] The adjusting device 2 may further include a connector 26 to fix the adjusting device 2 to the backrest 11. Specifically, the connector 26 is arranged on a front side of a backrest plate of the backrest 11, and the second outer cover 22 is arranged on a rear side of the backrest plate of the backrest 11. As shown in Figs. 2 and 3, fixing components, such as screws, may be arranged to sequentially pass through the connector 26, the backrest plate, the second outer cover 22, and the first outer cover 21, thereby fixing the adjusting device 2 to the backrest 11.

[00200] In another embodiment, the connector 26 may not be provided, instead, as shown in Figs. 44 and 45, the casing 20 of the adjusting device 2 can be directly fixed on the backrest 11 by fixing members A26, such as screws, such that the number of parts can be reduced and the fixing can be optimized.

[00201] In the adjusting device 2, the binding strap 240 plays a bearing role on the backrest 11 of the seat of the baby stroller 1. When the backrest 11 is pivoted towards the upright position or towards the lying position, an effective length of the binding strap 240 required for bearing the backrest 11 will change. In order to always keep the binding strap 240 in a tightened state for bearing the backrest 11, the reel 24 winds a part of the binding strap 240 on the binding strap 240, and winds or unwinds a part of the binding strap 240 by its own rotation as required. As shown in Figs. 6A-6B and 7A-7B, a circumferential side of the reel 24 is provided with a winding groove 241, and the binding strap 240 is wound in the winding groove 241.

[00202] In addition, as shown in Figs. 8 and 9, the clockwork spring 25 is arranged to be capable of driving the reel 24 to rotate in a winding direction DI, such that the reel 24 can be driven to rotate in the winding direction DI by an elastic force of the clockwork spring 25, and at this time, the binding strap 240 is wound on the reel 24. On the other hand, when the reel 24 rotates in an unwinding direction D2 opposite to the winding direction DI, the clockwork spring 25 is wound tightly, and at this time, the binding strap 240 is unwound from the reel 24.

[00203] More specifically, the embodiment shown in Figs. 8 and 9 shows one arrangement of the clockwork spring 25. In this embodiment, the clockwork spring 25 is accommodated by winding in the accommodating hole 242 within the reel 24, a first end 251 of the clockwork spring 25 is caught into a fixing post 231 of the inner cover 23, and a second end 252 of the clockwork spring 25 is caught into a catching slot 243 on a side wall of the accommodating hole 242 of the reel 24. Of course, the disclosure is not limited thereto, and the clockwork spring 25 may be arranged in other common ways as long as it can drive the reel 24 to rotate.

[00204] As shown in Figs. 2, 3, and 10, in order to prevent the clockwork spring 25 from separating from the accommodating hole 242 of the reel 24, an auxiliary disc 27 may be arranged on an outer side of the accommodating hole 242, and the auxiliary disc 27 is arranged to be capable of obstructing the clockwork spring 25.

[00205] In addition, the auxiliary disc 27 also plays a role of auxiliary winding the binding strap 240. In the embodiment shown in Figs. 7A and 7B, the auxiliary disc 27 includes a body 271, and first and second limit sheets 272 and 273 extending outwardly from an outer circumference of the body 271. The first limit sheets 272 and the second limit sheets 273 are spaced apart axially, so as to form a limit passage 274 (see Fig. 7A) for the binding strap 240 to pass through. The limit passage 274 can prevent the binding strap 240 from slipping off the auxiliary disc 27.

[00206] The binding strap 240 is only wound on the outer circumference of a half of the auxiliary disc 27, such that in the embodiment shown in Fig. 7A, the first limit sheets 272 and the second limit sheets 273 are only arranged at the outer circumference of the half of the auxiliary disc 27. It should be understood, the first limit sheets 272 and the second limit sheets 273 may also be arranged on the entire outer circumference of the auxiliary disc 27. In addition, although in Figs. 7A and 7B, the first limit sheets 272 and the second limit sheets 273 are staggered circumferentially, the first limit sheets 272 and the second limit sheets 273 may also be opposite circumferentially. Moreover, numbers of the first limit sheets 272 and the second limit sheets 273 may be set as required. [00207] Hereinafter, a manner in which the binding strap 240 is wound on the reel 24 will be described in detail with reference to Figs. 6A, 7, and 10. In such manner, the binding strap 240 enters the casing 20 of the adjusting device 2 via an opened hole 234 (see Fig. 5) on the circumferential side of the inner cover 23, then enters the accommodating hole 242 via one of the guiding grooves 245 on the reel 24, and then passes through the limit passage 274 of the auxiliary disc 27 (the auxiliary disc 27 is not shown in Fig. 6A) and is wound on a part of the reel 24 where the first limit sheets 272 and the second limit sheets 273 are arranged, such that the binding strap 240 is wound by passing through the accommodating hole 242, and then the binding strap 240 exits the accommodating hole 242 via another guiding grooves 245' on the reel 24, next is wound several times in the winding groove 241 of the reel 24, and finally extends out of the casing 20 of the adjusting device 2 via another opened hole on an opposite circumferential side of the inner cover 23

[00208] By passing the binding strap 240 through the limit passage 274 of the auxiliary disc 27, tension of the binding strap 240 can be increased, thereby improving the stability of unwinding the binding strap 240 from the reel 24.

[00209] It should be understood, the manner in which the binding strap 240 is wound on the reel 24 is not limited to this. In other embodiments of the disclosure, the auxiliary disc 27 may not be provided, such that a part of the binding strap 240 passing through the accommodating hole 242 is straight, thus the binding strap 240 is in a tensioned state.

[00210] In addition, in the embodiment shown in Fig. 6A, only one binding strap 240 is used. However, in other embodiments, two binding straps 240 can be used as well, and the reel 24 may be correspondingly provided with two winding grooves 241. One end of each binding strap 240 may be fixed in one of the winding grooves 241, and the other end is fixed on the frame 13 of the baby stroller 1, such that each of the binding straps 240 is wound in a corresponding winding groove 241.

[00211] In another embodiment, the adjusting device 2 according to the disclosure may not be provided with the clockwork spring 25, instead, the binding strap 240 may be arranged as a member having elasticity itself, so the binding strap 240 can drive the reel 24 to rotate by its own elasticity.

[00212] An included angle between the backrest 11 and the sitting part is an obtuse angle. When the user adjusts the backrest 11 of the baby stroller 1 to be pivoted towards the upright position, the obtuse angle between the backrest 11 and the sitting part becomes smaller, such that the effective length of the binding strap 240 required for bearing the backrest 11 becomes shorter, and the reel 24 can wind up the loosened binding strap 240, thereby allowing the clockwork spring 25 to drive the reel 24 to rotate in the winding direction DI. When the backrest 11 is pivoted to the upright position, most of the binding strap 240 is wound on the reel 24, and only a small part of the binding strap 240 extends out of the reel 24 and is fixed on the frame 13 of the baby stroller 1, such that the reel 24 can no longer rotate in the winding direction DI .

[00213] When the user adjusts the backrest 11 of the baby stroller 1 to be pivoted toward the lying position, the obtuse angle between the backrest 11 and the sitting part 12 becomes larger, such that the effective length of the binding strap 240 required for bearing the backrest 11 becomes longer. When the backrest 11 is pivoted to the lying position, most of the binding strap 240 is unwound from the reel 24, leaving only a small part located on the reel 24, such that the reel 24 can no longer rotate in the unwinding direction D2, thereby preventing the backrest 11 from further rotating. In addition, in the process of unwinding from the reel 24, the binding strap 240 will drive the reel 24 to rotate in the unwinding direction D2, such that the clockwork spring 25 located inside the reel 24 is wound tightly.

[00214] Therefore, by adjusting the length of the binding strap 240, the pivoted position of the backrest 11 in respect to the sitting part 12 can be controlled. On the premise that the length of the binding strap 240 is the same, the rotated angle of the reel 24 is related to the diameter of the reel 24 during the process from completely unwinding the binding strap 240 to completely winding the binding strap 240. When the diameter of the reel 24 is relatively large, the rotated angle of the reel 24 is relatively small, and when the diameter of the reel 24 is relatively small, the rotated angle of the reel 24 is relatively large. In this way, the diameter of the reel 24 can be arranged according to the actual use requirements, for example, the reel 24 having a relatively small diameter can be selected, and overall volume of the adjusting device 2 can be reduced.

[00215] In order to realize that the backrest 11 can stay in the upright position, the lying position, or a suitable position between the upright position and the lying position, a locating component rotating coaxially is disposed on the reel 24, and a locking component 100 cooperating with the locating component is also disposed inside the adjusting device 2.

[00216] In the embodiments shown in Figs. 3, 6B, 11 A, and 12A, the locating component may be a one-way located ratchet wheel 244. However, the disclosure is not limited thereto, and the locating component may be a two-way located gear 246 (see Figs. 11B and 12B) or other mechanisms with engaging slots or engaging protrusions, as long as the locating component can be located after being engaged with the locking component 100 and can move after being disengaged from the locking component 100.

[00217] Hereinafter, the following description will take the locating component being a one-way located ratchet wheel 244 as an example.

[00218] In order to make the ratchet wheel 244 rotate coaxially with the reel 24, in the embodiment shown in Fig. 6B, the ratchet wheel 244 is attached to the second disc 24B of the reel 24. However, the disclosure is not limited thereto. For example, instead of providing a separate ratchet wheel 244, the second disc 24B of the reel 24 may be made into a ratchet wheel. Of course, other kinds of locating components can be arranged on the reel 24 in same way.

[00219] As shown in Fig. 11 A, rotation of the ratchet wheel 244 in the unwinding direction D2 may be selectively obstructed by the locking component 100, such that the reel 24 cannot rotate in the unwinding direction D2; but rotation of the ratchet wheel 244 in the winding direction DI will not be obstructed by the locking component 100. As shown in Figs. 1 and 11A, when rotation of the ratchet wheel 244 on the reel 24 in the unwinding direction D2 is obstructed by the locking component 100, the reel 24 cannot rotate in the unwinding direction D2 similarly, the adjusting device 2 is in a locked state, and the ratchet wheel 244 can only rotate in the winding direction DI, such that the backrest 11 can only be freely pivoted to a suitable position toward the upright position and stay at the suitable position, but cannot be pivoted toward the lying position.

[00220] As shown in Fig. 12 A, when the locking component 100 moves to the unlocked position, such that rotation of the reel 24 on the ratchet wheel 244 in the unwinding direction D2 is no longer obstructed by the locking component 100, the adjusting device 2 is in the unlocked state, and the ratchet wheel 244 can rotate in both in the winding direction DI and the unwinding direction D2, such that the backrest 11 can not only be pivoted to a suitable position toward the upright position, but also be pivoted to a suitable position toward the lying position. After the backrest 11 is pivoted to a suitable position toward the upright position or toward the lying position, as long as the locking component 100 is returned to the locked position as shown in Fig. 11 A, rotation of the ratchet wheel 244 on the reel 24 in the unwinding direction D2 is obstructed again by the locking component 100, and the backrest 11 will stay at the suitable position. Through cooperation between the ratchet wheel 244 and the locking component 100, the adjusting device 2 according to the disclosure can realize one-way locking and one-way unlocking for pivoting of the backrest 11 toward the lying position.

[00221] It should be understood, what has been described above is embodiments in which rotation of the ratchet wheel 244 in the unwinding direction D2 may be selectively obstructed by the locking component 100, but the disclosure is not limited the above.

[00222] In another embodiment (not shown), the ratchet wheel 244 can be arranged reversely. For example, the ratchet wheel 244 can be arranged such that the engagement direction of the ratchet teeth is opposite to the engagement direction shown in Figs. 11 A and 12A, so the rotation in the winding direction DI will be selectively obstructed by the locking component 100, but the rotation of the ratchet wheel 244 in the unwinding direction D2 will not be obstructed by the locking component 100. The difference between this embodiment and the embodiment shown in Figs. 11 A and 12A is that when rotation of the ratchet wheel 244 on the reel 24 in the winding direction DI is obstructed by the locking component 100, the reel 24 cannot rotate in the winding direction DI, the adjusting device 2 is in a locked state, and the ratchet wheel 244 can only rotate in the unwinding direction D2, such that the backrest 11 can only be freely pivoted to a suitable position toward the lying position and stay at the suitable position, but cannot be pivoted toward the upright position. When the locking component 100 moves to the unlocked position, such that rotation of the ratchet wheel 244 on the reel 24 in the winding direction DI is no longer obstructed by the locking component 100, the adjusting device 2 is in the unlocked state, the ratchet wheel 244 can rotate both in the winding direction DI and the unwinding direction D2, such that the backrest 11 can not only be pivoted to a suitable position toward the upright position, but also be pivoted to a suitable position toward the lying position. After the backrest 11 is pivoted to a suitable position toward the upright position or toward the lying position, as long as the locking component 100 is returned to the locked position, rotation of the ratchet wheel 244 on the reel 24 in the winding direction DI is obstructed again by the locking component 100, and the backrest 11 will stay at the suitable position.

[00223] In yet another embodiment, the locating component is a two-way located gear 246 (see Figs. 11B and 12B) or other mechanism with engaging slots or engaging protrusions and the like, i.e., the locating component is arranged such that the rotation in either the winding direction DI or the unwinding direction D2 will be selectively obstructed by the locking component 100. The difference between this yet another embodiment and the embodiments using the ratchet wheel 244 is that when rotation of the locating component on the reel 24 is obstructed by the locking component 100, as shown in Fig. 11B, the reel 24 can neither rotate in the winding direction DI nor in the unwinding direction D2, and the adjusting device 2 is in a locked state. When the locking component 100 moves to the unlocked position, such that rotation of the locating component on the reel 24 is no longer obstructed by the locking component 100, as shown in Fig. 12B, the adjusting device 2 is in the unlocked state, and the locating component can rotate both in the winding direction DI and in the unwinding direction D2, such that the backrest 11 can not only be pivoted to a suitable position toward the upright position, but also be pivoted to a suitable position toward the lying position. After the backrest 11 is pivoted to the suitable position toward the upright position or toward the lying position, as long as the locking component 100 is returned to the locked position, as shown in Fig. 11B, rotation of the locating component on the reel 24 is obstructed by the locking component 100 again, and the backrest 11 will stay at the suitable position.

[00224] The locking component 100 to be movable between a locked position and an unlocked position. In the locked position, the locking component 100 obstructs the backrest 11 from being pivoted; and in the unlocked position, the locking component 100 allows the backrest 11 to be pivoted.

[00225] In the embodiments as shown in the accompanying drawings, the movement of the locking component 100 is a pivoting movement. However, the movement of the locking component lOOmay also be a sliding movement, or a combined movement of a pivoting movement and a sliding movement.

[00226] Specifically, as shown in Figs. 11 A and 12 A, a connecting side 101 of the locking component 100 is pivotably connected to a connecting part 232 of the inner cover 23, such that a free side 102 of the locking component 100 can be pivoted in respect to the connecting part 232. Figs. 11 A and 12A respectively show schematic views of the locking component 100 in a locked position and an unlocked position. As shown in Fig. 11 A, when the free side 102 of the locking component 100 is pivoted to the locked position, a clamping portion 103 of the free side 102 of the locking component 100 engages with the ratchet teeth on the ratchet wheel 244, thereby obstructing the ratchet wheel 244 from rotating in the unwinding direction D2. As shown in Fig. 12A, when the free side 102 of the locking component 100 is pivoted to the unlocked position, the clamping portion 103 of the locking component 100 is disengaged from the ratchet teeth on the ratchet wheel 244, thereby allowing the ratchet wheel 244 to rotate in the unwinding direction D2.

[00227] Of course, the locking component 100 according to the disclosure is not limited to this. More specifically, the locking component 100 may also be arranged to slide up and down along a slide rail (not shown) on the inner cover 23, such that the clamping portion 103 of the locking component 100 can be engaged with or disengaged from the ratchet teeth on the ratchet wheel 244, and the movement of the locking component 100 is as sliding movement at this time. [00228] As shown in Figs. 11 A and 12A, the adjusting device 2 may include an elastic component 28. The elastic component 28 is arranged to drive the locking component 100 to move toward the locked position, such that the locking component 100 tends to obstruct the ratchet wheel 244 from rotating in the unwinding direction D2. In the embodiment shown in Figs. 11 A and 12 A, the elastic component 28 is a torsion spring arranged surrounding the connecting side 101 of the locking component 100. One end 281 of the torsion spring abuts against an inner upper wall of the inner cover 23, and the other end 282 is connected to a protrusion 104 in middle of the locking component 100.

[00229] Of course, the elastic component 28 may also be implemented in various forms, such as a tension spring, a compression spring, an elastic rope or an elastic body, as long as it can drive the locking component 100 to move toward the locked position.

[00230] In the case that the locating component is a one-way located ratchet wheel 244, when the user adjusts the backrest 11 of the baby stroller 1 to be pivoted toward the lying position, the reel 24 will rotate in the unwinding direction D2, but the locking component 100 tends to obstruct the ratchet wheel 244 and the reel 24 from rotating in the unwinding direction D2 under action of the elastic component 28, so the user has to firstly operate the locking component 100 to move it to the unlocked position, and keep the locking component 100 in the unlocked position (i.e., to change the adjusting device 2 from the locked state into the unlocked state and keep it in the unlocked state), and then the user can pull the backrest 11 of the baby stroller 1 to be pivoted toward the lying position. That is, the user needs two actions in different directions to realize pivoting of the backrest 11 toward the lying position, so there is a problem of inconvenient operation.

[00231] In order to make the user's operation more convenient, the disclosure provide a unlocking mechanism for changing the adjusting device 2 to an unlocked state, thereby releasing locating of the backrest 11 and enabling the backrest 11 to be pivoted.

[00232] In addition, the disclosure also provides an unlocking mechanism for releasing a relative locating between a first member and a second member, the unlocking mechanism comprises: a locking component 100, arranged to be movable between a locked position and a unlocked position, in the locked position, the locking component 100 obstruct the relative locating between the first member and the second member, and in the unlocked position, the locking component 100 allows the relative locating between the first member and the second member; an operating component, arranged to directly or indirectly drive the locking component 100 to move toward the unlocked position under action of an external force. Here, “directly” means that the operating component is in direct contact with and plays action on the locking component 100, and “indirectly” means that the operating component is not in direct contact with the locking component 100, instead, any acting force is transmitted between them via other members.

[00233] In an embodiment, the unlocking mechanism according to the disclosure comprises: a locking component 100; a bringing component 200, having a first end 201 connected to the locking component 100; and an operating component, connected to a second end 202 of the bringing component 200. Among them, the operating component is arranged to be able to bring the locking component 100 to move toward an unlocked position via the bringing component 200 under action of an external force.

[00234] Hereinafter, various embodiments of the unlocking mechanism according to the disclosure will be described in detail with reference to the accompanying drawings.

[00235] First embodiment of the unlocking mechanism

[00236] Figs. 2 to 20 shows the first embodiment of the unlocking mechanism according to the disclosure, in which the operating component is a pull handle 300 which can drive the bringing component 200 to move by being pulled. The first embodiment of the unlocking mechanism can realize that making the adjusting device 2 changed from the locked state into the unlocked state and making the backrest 11 be pivoted.

[00237] It should be noted, when the locating component is the one-way located ratchet wheel 244, the unlocking mechanism according to the disclosure is a one-way unlocking mechanism which only performs unlocking when pivoting of the backrest 11 toward the lying position is obstructed, or a one-way unlocking mechanism which only performs unlocking when pivoting of the backrest 11 toward the upright position is obstructed. However, when the locating component is a two-way located gear 246 (see Figs. 11B and 12B) or other mechanism with engaging slots or engaging protrusions, the unlocking mechanism according to the disclosure is a two-way unlocking mechanism which performs unlocking when pivoting of the backrest 11 toward both the lying position and the upright position is obstructed.

[00238] In order to facilitating description, the following description will take the locating component as an example with reference to the accompanying drawings, in which the as the locating component is a one-way located ratchet wheel 244 and the unlocking mechanism is a one-way unlocking mechanism which only performs unlocking when pivoting of the backrest 11 toward the lying position is obstructed.

[00239] As shown in Figs. 13 to 17, in the first embodiment of the unlocking mechanism according to the disclosure, the bringing component 200 is a flexible member, a first end 201 of the bringing component 200 is connected to the free side 102 of the locking component 100, and a second end 202 of the bringing component 200 is connected to the pull handle 300. The pull handle 300 and the bringing component 200 may be two independent parts, or a single part integrally formed. The pull handle 300, by being pulled, drives the bringing component 200 to move, thereby bringing the locking component 100 to move toward the unlocked position.

[00240] It should be understood, the first end 201 of the bringing component 200 may be connected to a suitable position between two ends of the locking component 100. The closer the position is to an end of the connecting side 101 of the locking component 100, in the case that the locking component 100 swings at a same angle, the shorter the travel of the bringing component 200 will be, but the greater the external force required to be exerted on the pull handle 300, and the more laborious it will be for the user. Conversely, the closer the position is to an end of the free side 102 of the locking component 100, the less the external force required to be exerted on the pull handle 300, and the more labor is saved by the user, but the longer the travel the bringing component 200.

[00241] The bringing component 200 may be a flexible member capable of withstanding tensile force, such as a webbing, a pull rope or a metal wire, but it is not limited thereto.

[00242] In order to enable the bringing component 200 to enter from the outside of the casing 20 of the adjusting device 2 for being connected to the locking component 100, the first outer cover 21 is provided with a guiding hole 211 (see Figs. 13 to 17), and the inner cover 23 is provided with a through hole 233 (see Figs. 2, 3, 17, and 20) for the bringing component 200 to pass through. In an embodiment where the first outer cover 21 is not provided, the bringing component 200 only needs to pass through the through hole 233 in the inner cover 23. The position of the guiding hole 211 on the first outer cover 21 and the position of the through hole 233 on the inner cover 23 are preferably formed at positions corresponding to the locking component 100, so as to facilitate the bringing component 200 to pass through the through hole 233 and/or the guiding hole 211 to be connected to the locking component 100.

[00243] In addition, the bringing component 200 is wound on a hole wall of the guiding hole 211 or the through hole 233 in the process passing through the guiding hole 211 or the through hole 233, and the hole wall of the guiding hole 211 or the through hole 233 is a guider which plays a guiding role on the moving direction of the bringing component 200, and guides the bringing component 200 to bring the locking component 100 to move toward the unlocked position, such that the pull handle 300 connected to the second end 202 of the bringing component 200 can be pulled in multiple operable directions.

[00244] In the disclosure, the phrase “multiple operable directions” means that the direction of the external force exerted on an operating component including the pull handle 300 is not limited to be implemented in one direction, but can be implemented in multiple directions. “Operable” means that the external force exerted by the user to the pull handle 300 can cause the bringing component 200 to bring the locking component 100 to move toward the unlocked position. For example, in the embodiment shown in Fig. 1 where the pull handle 300 is exposed from a side of the backrest 11 facing away from the baby, the multiple operable directions of the external force exerted on the pull handle 300 may be perpendicular to or inclined to an extending direction of the backrest 11 and from the backrest 11 toward the rear of the baby stroller, or may be parallel to the extending direction of the backrest 11. But the disclosure is not limited thereto, in another embodiment, when the adjusting device 2 is arranged such that the pull handle 300 is exposed from a side of the backrest 11 facing the baby, the multiple operable directions of the external force exerted on the pull handle 300 may be perpendicular to or inclined to the extending direction of the backrest 11 and from the backrest 11 toward the front of the baby stroller, or may be parallel to the extending direction of .the backrest 11. In yet another embodiment, when the adjusting device 2 is arranged at a top end of the backrest 11, the multiple operable directions of the external force exerted on the pull handle 300 may be perpendicular to or inclined to the extending direction of the backrest 11 and from the backrest 11 toward the front or rear of the baby stroller, or may be parallel to the extending direction of the backrest 11. In these embodiments, the user can pull the pull handle 300 in all the multiple operable directions, and can unlock the adjusting device 2, which greatly facilitates the user's operation.

[00245] In the embodiments as shown in Figs. 2, 3, 17, and 20, the through hole 233 in the inner cover 23 can also serve for the locking component 100 to be disposed therein. Specifically, as shown in Fig. 17, the locking component 100 is arranged in the through hole 233 of the inner cover 23, which makes the overall structure of the adjusting device 2 in this embodiment more compact and has the advantage of thin thickness. While on the other hand, in this embodiment, the locking component 100 can be pivoted in respect to the connecting part 232, so in order to allow the locking component 100 to be sufficiently pivoted in the through hole 233 of the inner cover 23, the through hole 233 must have a large sectional area.

[00246] In another embodiment, the thickness of the adjusting device 2 may be set to be relatively thick, such that the locking component 100 does not have to be arranged in the through hole 233 of the inner cover 23, e.g., the locking component 100 may be arranged between the inner cover 23 and the second outer cover 22. In such case, it is not necessary for the locking component 100 to be pivoted in the through hole 233, as long as the bringing component 200 can pass through it. Moreover, the through hole 233 can be arranged to have a shape corresponding to the shape of the cross section of the bringing component 20. If the bringing component 200 is a webbing, the through hole 233 is a corresponding elongate strip; and if the bringing component 200 is a metal wire, then the through hole 233 is shaped as a corresponding hole. Therefore, area of the through hole 233 can be reduced, and areas of the inner cover 23 and the second outer cover 22 can be reduced correspondingly, so as to further reduce the occupied area of the adjusting device 2. Since the entire occupied area is small, the adjusting device 2 according to the disclosure is more flexible in the arranged position.

[00247] In the embodiment shown in Figs. 11A and 12A, the locking component 100, the unlocking mechanism, and the through hole 233 are arranged in an upper half of the adjusting device 2. However, the disclosure is not limited thereto. In other embodiments, the locking component 100 may be arranged in other suitable places corresponding to a periphery of the ratchet wheel 244, e.g., under the ratchet wheel 244, and the unlocking mechanism and the through hole 233 may be correspondingly arranged in a lower half of the adjusting device 2. As long as the pull handle 300 can bring the locking component 100 to move toward the unlocked position via the bringing component 200 under action of an external force, it falls within the protection scope of the disclosure.

[00248] The shape of the guiding hole 211 in the first outer cover 21 may also be arranged to be corresponding to the shape of the cross section of the bringing component 200. If the bringing component 200 is a webbing, the guiding hole 211 is a corresponding elongate strip; and if the bringing component 200 is a metal wire, then the guiding hole 211 is shaped as a corresponding hole. As long as the cross section of the guiding hole 211 can allow the bringing component 200 to pass through, it is not necessary for the cross section of the guiding hole 211 to cooperate with the travel of the locking component 100, and it is not necessary for the first outer cover 21 to have a relative large size corresponding to expanding of the cross section of the guiding hole 211, which further reduces the occupied area of the casing 20 of the adjusting device 2 according to the disclosure.

[00249] In order to better guide the bringing component 200, in the embodiment shown in Figs. 19 and 20, the unlocking mechanism further comprises a pulley 400 arranged on the adjusting device 2, and the bringing component 200 is arranged to pass around the pulley 400. In this embodiment, the pulley 400 may be a cylindrical rotating body freely rotatable around a horizontal axis, and the bringing component 200 extends from the locking component 100 and out of the casing 20 of the adjusting device 2 after changing direction via the pulley 400. In the embodiment as shown in Fig. 19, the pulley 400 is arranged on the first outer cover 21. In the embodiment as shown in Fig. 20, the pulley 400 is arranged on the inner cover 23. The pulley 400 can play a role of guiding and sliding-assisting, so as to allow the user to pull the pull handle 300, thereby making the bringing component 200 bring the locking component 100 to move toward the unlocked position more smoothly. The pulley 400 is also an example of the guider, which can guide the bringing component 200 to bring the locking component to move toward the unlocked position more smoothly.

[00250] When the user wants to adjust the backrest 11 of the baby stroller 1 to perform a pivoting, at least two schemes can be selected to use the first embodiment of the unlocking mechanism according to the disclosure.

[00251] The first scheme: [00252] The direction of the external force exerted by the user to the pull handle 300 is not parallel to the extending direction of the backrest 11, but perpendicular to or inclined to the extending direction of the backrest 11. Therefore, the external force in the same direction exerted by the user to the pull handle 300 has both functions of unlocking the adjusting device 2 and making the backrest 11 perform pivoting. That is, in the first scheme, the first embodiment of the unlocking mechanism according to the disclosure performs a position adjustment of the backrest 11 by only one force exertion action in the same direction. Specifically, by the user's force exerting action on the pull handle 300, perpendicular to the extending direction of the backrest 11 or inclined to the extending direction of the backrest 11, the pull handle 300 pulls the locking component 100 to move to the unlocked position via the bringing component 200, such that the clamping portion 103 of the locking component 100 disengages from the ratchet teeth on the ratchet wheel 244, thereby allowing the ratchet wheel 244 and the reel 24 to rotate in the unwinding direction D2, the adjusting device 2 is changed into the unlocked state, and the backrest 11 is allowed to be pivoted. Moreover, the external force in the same direction not only keeps the locking component 100 in the unlocked position, but also acts on the backrest 11 via the pull handle 300, the bringing component 200, and the adjusting device 2 to pivot the backrest 11.

[00253] More specifically, in the embodiment shown in Fig. 1 where the pull handle 300 is exposed from the side of the backrest 11 facing away from the baby, the ratchet wheel 244 in the adjusting device 2 adopts a forward arrangement. When the direction of the external force exerted by the user to the pull handle 300 is perpendicular or inclined to the extending direction of the backrest 11 and toward the rear of the baby stroller from the backrest 11, the user only needs to apply the external force in the same direction, it can be realized to unlock the adjusting device 2 and make the backrest 11 be pivoted toward the lying position. In another embodiment, when the adjusting device 2 is arranged such that the pull handle 300 is exposed from the side of the backrest 11 facing the baby, the ratchet wheel 244 in the adjusting device 2 adopts a reversed arrangement. When the direction of the external force exerted by the user to the pull handle 300 is perpendicular or inclined to the extending direction of the backrest 11 and toward the front of the baby stroller from the backrest 11, the user only needs to apply the external force in the same direction, it can be realized to unlock the adjusting device 2 and make the backrest 11 be pivoted toward the upright position. [00254] In addition, when the direction of the external force exerted by the user to the pull handle 300 is perpendicular to the extending direction of the backrest 11, the moment generated by the external force this direction for pivoting the backrest 11 is maximum, such that the user can bring the backrest 11 to be pivoted in a most labor-saving way.

[00255] The second scheme:

[00256] The user can also apply an external force parallel to the extending direction of the backrest 11 to the pull handle 300, so as to change the adjusting device 2 into the unlocked state, and then apply an external force perpendicular or inclined to the extending direction of the backrest 11 to the pull handle 300, so as to make the backrest 11 to be pivoted, or adjust the position of the backrest 11 with the other hand to make the backrest 11 be pivoted. That is, in second scheme, the first embodiment of the unlocking mechanism according to the disclosure performs a position adjustment of the backrest 11 by two force exerting actions in different directions. Particularly, in the process for changing the adjusting device 2 to be in the unlocked state and for the user to apply an external force perpendicular or inclined to the extending direction of the backrest 11 to make the backrest 11 to be pivoted, although there are two force exerting actions in different directions, the user only needs to operate the pull handle 300 with a single hand, so the operation is convenient.

[00257] Thus it can be seen, the first embodiment of the unlocking mechanism according to the disclosure enables the user to not only change the adjusting device 2 into the unlocked state to make the backrest 11 be pivoted by one force exerting action in the same direction, thereby adjusting the position of the backrest 11 to be pivoted in respect to the sitting part, but also to perform a position adjustment of the backrest 11 by two force exerting actions force exertion actions in different directions.

[00258] Moreover, by using a flexible member as the bringing component 200 and selectively guiding the moving direction of the bringing component 200 through a guide, even if an external force is exerted on the pull handle 300 in multiple operable directions, the external force always can change the direction of force transmission through the flexible bringing component 200, and finally make the locking component 100 move to the unlocked position. That is, the user can unlock the adjusting device 2 by applying external force to the pull handle 300 in multiple operable directions, which greatly facilitates the user's operation.

[00259] Further, when the user applies an external force to the pull handle 300, the external force received by the pull handle 300 will acts on the adjusting device 2 via the bringing component 200, and the adjusting device 2 fixed on the backrest 11 will subsequently exerts a pulling force on the backrest 11, thereby pulling the backrest 11 to be pivoted. In view of this, the adjusting device 2 is preferably arranged on the rear side of the backrest 11 and located at a position above the middle of the backrest 11, such that the pull handle 300 can better exert pulling force on the backrest 11.

[00260] In addition, as shown in Figs. 15 and 16, in the unlocking mechanism according to the disclosure, only the pull handle 300 is exposed outside the casing 20 of the adjusting device 2, which reduces the number and sizes of operating members exposed outside the casing 20, thus making the adjusting device 2 more aesthetically pleasing.

[00261] In the embodiment shown in Figs. 14 to 17, the pull handle 300 is a solid member which can only be grasped by the user. However, the disclosure is not limited thereto. For further facilitating the user, as shown in Fig. 18, the pull handle 300 may also take the form of a pull ring with a pull hole 301 formed therein. In this way, the user can hook the pull hole 301 of the pull handle 300 with fingers, so as to pull the pull handle 300 more conveniently.

[00262] It should be understood, the unlocking mechanism according to the disclosure is not limited to the first embodiment. In other embodiments, an operating component may include, but is not limited to, the pull handle 300. Specifically, the disclosure also provides the following other embodiments of the unlocking mechanism. As shown in Figs. 21 to 30, the following other embodiments are different from the first embodiment in that the pull handle 300 as an operating component in the unlocking mechanism is replaced by a push handle 300' or a slide handle 300".

[00263] The second embodiment of the unlocking mechanism

[00264] Fig. 21 shows the second embodiment of the unlocking mechanism according to the disclosure. The unlocking mechanism and other assemblies in the adjusting device 2 to be unlocked and their working principles are the same as those of the first embodiment, except that the operating component is replaced by the push handle 300' which drives the bringing component 200 to move by sliding in a direction parallel to the extending direction of the backrest 11. Therefore, for the sake of brevity, descriptions of other assemblies in the second embodiment of the unlocking mechanism and their working principles are omitted below.

[00265] In the second embodiment of the unlocking mechanism according to the disclosure, the push handle 300' is connected to the second end 202 of the flexible bringing component 200, and is arranged to drive the flexible bringing component 200 to move by sliding in a direction parallel to the extending direction of the backrest 11, thereby changing the adjusting device 2 into the unlocked state by the bringing component 200 bringing the locking component 100 of the adjusting device 2 to move toward the unlocked position. The push handle 300' and the bringing component 200 may be two independent parts, or a single part integrally formed.

[00266] In the embodiment shown in Fig. 21, the push handle 300' is slidably disposed on an outer surface of the inner cover 23 of the adjusting device 2. Sliding of the push handle 300' in respect to the inner cover 23 can be realized in various ways. For example, a slide rail may be arranged on one of the push handle 300' and the inner cover 23, and a chute (not shown) may be arranged on the other of the push handle 300' and the inner cover 23, sliding of the push handle 300' in respect to the inner cover 23 can be realized through the cooperation of the slide rail and the chute.

[00267] However, in other embodiments, the push handle 300' can also be slidably arranged on an outer surface of the backrest 11 of the adjusting device 2.

[00268] When the user wants to adjust the backrest 11 of the baby stroller 1 to be pivoted, he can apply an external force parallel to or inclined to the extending direction of the backrest 11 to the push handle 300' to change the adjusting device 2 into the unlocked state, and then adjust a position of the backrest 11 with the other hand, so as to make the backrest 11 be pivoted. That is, the second embodiment of the unlocking mechanism according to the disclosure performs a position adjustment of the backrest 11 by two force exerting actions in different directions.

[00269] For the structural configuration connected between the push handle 300' and the locking component 100 via the flexible bringing component 200, the first end 201 of the bringing component 200 may be connected to a suitable position between two ends of the locking component 100. The closer the position is to an end of the connecting side 101 of the locking component 100, in the case that the locking component 100 swings at the same angle, the shorter the required travel of the push handle 300' on the casing 20 of the adjusting device 2, thereby reducing the occupied area of the casing 20 and making the adjusting device 2 more aesthetically pleasing.

[00270] In the second embodiment, it is not necessary to arrange the first outer cover 21 on the adjusting device 2, thereby reducing thickness of the adjusting device 2.

[00271] The third embodiment of the unlocking mechanism [00272] Figs. 22A-26B and 46-49 shows the third embodiment of the unlocking mechanism according to the disclosure. The unlocking mechanism and other assemblies in the unlocked adjusting device 2 and their working principles are the same as those in the first embodiment, except that the operating component is replaced by a slide handle 300" which drives the bringing component 200 to move by sliding on a fixed base 500. Therefore, for the sake of brevity, descriptions of other assemblies in the third embodiment of the unlocking mechanism and their working principles are omitted below.

[00273] The first scheme of third embodiment

[00274] Figs. 22A to 26B show the first scheme of the third embodiment of the unlocking mechanism according to the disclosure, in which the adjusting device 2 and the fixed base 500 are two separate members.

[00275] As shown in Figs. 23 and 26A, the slide handle 300" is connected to the second end 202 of the flexible bringing component 200, and is arranged to drive the bringing component 200 to move, so as to change the adjusting device 2 into the unlocked state by the bringing component 200 bringing the locking component 100 of the adjusting device 2 to move toward the unlocked position. The slide handle 300" and the bringing component 200 may be two independent parts, or a single part integrally formed.

[00276] As shown in Figs. 22 A to 24, the slide handle 300" is slidably arranged on the fixed base 500. The fixed base 500is arranged on the backrest plate of the backrest 11.

[00277] Sliding of the slide handle 300" in respect to the fixed base 500 can be realized in various ways. For example, a slide rail may be arranged on one of the slide handle 300" and the fixed base 500, and a chute (not shown) may be arranged on the other of the slide handle 300" and the fixed base 500, so sliding of the slide handle 300" in respect to the fixed base 500 can be realized through cooperation of the slide rail and the chute.

[00278] The fixed base 500 can be arranged on the backrest plate of the backrest 11 in various ways. For example, the fixed base 500 can be arranged on the backrest 11 by the connector 26 of the adjusting device 2 (extending the connector 26 to the position where the fixed base 500 is located) or by another connector singularly arranged, in which the connector 26 is arranged on a front side of the backrest plate of the backrest 11, and the fixed base 500 is arranged on a rear side of the backrest plate of the backrest 11. Fixing components, such as screws, can be used to sequentially pass through the connector 26, the backrest plate, and the fixed base 500, thereby fixing the adjusting device 2 to the backrest 11. Of course, the fixed base 500 may be directly arranged on the backrest 11 through fixing components, such as screws, without arranging the connector 26.

[00279] In the embodiments shown in Figs. 22B, 22C, 24, and 26B, the fixed base 500 is arranged on the backrest 11 through a fixing pin 600. Moreover, an elongate chute 303" is correspondingly arranged on the slide handle 300" for the fixing pin 600 to pass through. The chute 303" is slides in respect to the fixing pin 600, such that sliding of the slide handle 300" in respect to the fixed base 500 is limited within a range of the chute 303", so the slide handle 300" can be prevented from being separated from the fixed base 500.

[00280] In the embodiments shown in Figs. 22B, 22C, and 26B, a return spring 504 is disposed between the fixed base 500 and the slide handle 300", and the return spring 504 is arranged to drive the slide handle 300" to return an initial position where the bringing component 200 has not be driven. Although in the embodiments shown in Figs. 22B, 22C, and 26B, the return spring 504 is a compression spring arranged within the chute 303", the disclosure is not limited thereto. Specifically, the return spring 504 may be a tension spring, a torsion spring, or other elastic member, and the return spring 504 may be arranged at other suitable positions where it can drive the slide handle 300" to return the initial position.

[00281] In addition, as shown in Figs. 22A to 24, the fixed base 500 may further include a locating structure 502. The locating structure 502 is arranged to limit a sliding path of the slide handle 300", so as to avoid sliding of the slide handle 300" on the fixed base 500 from deviation. It should be understood, although in the embodiment shown in Figs. 22A to 24, the locating structure 502 is two locating protrusions adjacent to both sides of the slide handle 300", the disclosure is not limited thereto. The locating structure 502 may be other structures such as locating slots surrounding the slide handle 300", as long as it can limit the sliding path of the slide handle 300". In order to mold the two locating protrusions 502, openings 503 are further formed at corresponding positions of the fixed base 500.

[00282] In order to facilitate the user to operate the slide handle 300", in the embodiments shown in Figs. 22A, 23, and 26A, a top of the fixed base 500 may be designed to have a flat surface extending horizontally (i.e., extending in a direction perpendicular to a moving direction of the slide handle 300" and away from the backrest 11), and the slide handle 300" may be designed to have a force exertion part (i.e., an operating component force exertion part) 304" extending horizontally (i.e., extending in a direction perpendicular to the moving direction of the slide handle 300" and away from the backrest 11). The operating component force exertion part 304" is in a shape of a trigger. In this way, the user can press the top of the fixed base 500 with a thumb, and hook the operating component force exertion part 304" of the slide handle 300" with an index finger, thus facilitating to an external force to the slide handle 300". In addition, in another embodiment shown in Figs. 22B, 22C, and 26B, fixed base ribs 505 are disposed on the flat surface of the top of the fixed base 500 for increasing friction between the user's fingers and the top of the fixed base 500, so as to facilitate the user to apply force. In another embodiment shown in Fig. 26B, slide handle ribs 305" are disposed on a lower surface of the operating component force exertion part 304" of the slide handle 300" for increasing friction between the user's fingers and the operating component force exertion part 304", so as to facilitate the user to apply force. The fixed base ribs 505 and the slide handle ribs 305" may be point-like protrusions or recesses, or strip-like protrusions or recesses arranged regularly or irregularly, or may take other shapes or structures that can increase friction.

[00283] When the user wants to adjust the backrest 11 of the baby stroller 1 to be pivoted, at least two schemes can be selected to use the third embodiment of the unlocking mechanism according to the disclosure.

[00284] The first scheme :

[00285] The user can firstly hook the operating component force exertion part 304" of the slide handle 300" with fingers, and apply an external force parallel to the extending direction of the backrest 11 to the operating component force exertion part 304" to change the adjusting device 2 into the unlocked state, and then the user's fingers apply an external force perpendicular to the extending direction of the backrest 11 or an external force inclined to the extending direction of the backrest 11 to the slide handle 300" again to make the backrest 11 be pivoted, or adjust the position of the backrest 11 with the other hand to make the backrest 11 be pivoted. That is, in the first scheme, the third embodiment of the unlocking mechanism according to the disclosure performs a position adjustment of the backrest 11 by two force exerting actions in different directions. Particularly, in the process that the adjusting device 2 is changed into the unlocked state and the user's fingers apply an external force which is perpendicular to or inclined to the extending direction of the backrest 11 to the slide handle 300" to make the backrest 11 be pivoted, although there are two force exerting actions in different directions, the user only needs to operate with the fingers of one hand, so the operation is convenient.

[00286] The second scheme:

[00287] The user also hooks the operating component force exertion part 304" of the slide handle 300" with the index finger, but the direction of the external force exerted on the operating component force exertion part 304" is neither parallel to the extending direction of the backrest 11, nor perpendicular to the extending direction of the backrest 11, but inclined to the extending direction of the backrest 11. As a result, the external force in the same direction exerted by the user to the operating component force exertion part 304" not only play a role of unlocking the adjusting device 2, but also play a role of making the backrest 11 be pivoted. That is, in the second scheme, the third embodiment of the unlocking mechanism according to the disclosure performs a position adjustment of the backrest 11 by only one force exerting action in the same direction. Specifically, by the user's force exerting action which is inclined to the extending direction of the backrest 11 to the operating component force exertion part 304", the slide handle 300" pulls the locking component 100 to move to the unlocked position via the bringing component 200, such that the adjusting device 2 is changed into the unlocked state, and the backrest 11 is allowed to be pivoted. Moreover, the external force in the same direction not only keeps the locking component 100 in the unlocked position, but also acts on the backrest 11 via the slide handle 300" and the fixed base 500, so as to make the backrest 11 be pivoted .

[00288] Thus it can be seen, the third embodiment of the unlocking mechanism according to the disclosure enables the user not only to perform a position adjustment of the backrest 11 by two force exerting actions in different directions, but also to change the adjusting device 2 into the unlocked state and make the backrest 11 be pivoted by one force exerting action in the same direction, thereby adjusting the position of the backrest 11 in respect to the sitting part.

[00289] In the embodiment shown in Figs. 22A to 26B, an upper part of the inner cover 23 is provided with a through hole 233 for the locking component 100 to pass through. Moreover, the slide handle 300" can sild up and down in respect to the fixed base 500, such that the bringing component 200 can travel up and down in s straight line. Compared with the case that the bringing component 200 in the first embodiment of the unlocking mechanism is required to change direction, this embodiment enables the user to apply force more easily.

[00290] Of course, in another embodiment, the locking component 100 need not be arranged in the through hole 233 of the inner cover 23, and the through hole 233 can be arranged only for the bringing component 200 to pass therethrough.

[00291] Alternatively, in yet another embodiment, the through hole 233 is not arranged in an upper part of the inner cover 23, but at other positions of the inner cover 23 corresponding to the locking component 100. In addition, the slide handle 300" may be arranged to slide in a left-right direction or other directions in respect to the fixed base 500, such that the slide handle 300" and the fixed base 500 can be arranged more flexibly. Accordingly, a guide slot or guide rod (not shown) may be disposed on the backrest 11, such that a part of the flexible bringing component 200 connected to the slide handle 300" can pass around the guide slot or guide rod to move in an unlocking direction, thereby better bringing the locking component 100 of the adjusting device 2 to move toward the unlocked position.

[00292] On the other hand, in the third embodiment of the adjusting device according to the disclosure, the fixed base 500 may be arranged at a suitable position of the backrest 11, such that the slide handle 300" can also be arranged more flexibly following the fixed base 500, thereby allowing the user to operate the slide handle 300" more conveniently. For example, the fixed base 500 may be arranged on the top of the backrest 11, so when the user adjusts the position of the backrest 11, he only needs to operate the slide handle 300" on the top of the backrest 11 to unlock the adjusting device 2. In such case, as shown in Figs. 26A and 26B, the fixed base 500 may have a hanging hook 501 extending from top thereof, and the hanging hook 501 is hooked on a backrest pipe 111 at the top of the backrest 11. In another embodiment, the hanging hook 501 is provided with a penetrating hole 5011 (see Figs. 26A and 26B). The penetrating hole 5011 allows a fixing component, such as a blind rivet, a rivet, or a screw and the like (not shown) to pass therethrough, so as to arrange the hanging hook 501 of the fixed base 500 on backrest pipe 111, so the fixed base 500 can be more stably arranged on the backrest 11.

[00293] The flexible bringing component 200 can change the direction of the direction of force transmission, such that the operating component (e.g., the pull handle 300, the push handle 300', or the slide handle 300") can be arranged to achieve unlocking effect as long as the operating direction finally causes the locking component 100 to move toward the unlocked position.

[00294] The second scheme of the third embodiment

[00295] Figs. 46 to 49 show the second scheme of the third embodiment of the unlocking mechanism according to the disclosure, in which the adjusting device 2 and the fixed base 500 are integrally formed. Specifically, the casing 20 of the adjusting device 2 and the fixed base 500 are integrally formed, that is, both the casing 20 of the adjusting device 2 and the fixed base 500 are formed as one member. Therefore, not only the number of elements can be reduced, but also the overall size can be optimized.

[00296] For example, the adjusting device 2 may include casing 20 composed of a second outer cover 22 and an inner cover 23. Among them, the second outer cover 22 is arranged on the backrest 11, and in such case, the fixed base 500 may be integrally formed with the second outer cover 22, as shown in Figs. 47 to 49.

[00297] Of course, the disclosure is not limited thereto. Specifically, the casing 20 of the adjusting device 2 may be an integral casing, and in such case, the fixed base 500 may be a part extending from the casing 20

[00298] In addition, in the case that the fixed base 500 and the casing 20 of the adjusting device 2 are integrally formed, the length of the bringing component 200 can be further shortened, and the travel of the slide handle 300" on the fixed base 500 can also be shortened. Thus, the fixed base 500 extending from the casing 20 of the adjusting device 2 can be shortened, for example, the length of the fixed base 500 may only extend 44 mm from the casing 20 of the adjusting device 2, such that the farthest distance of the fixed base 500 in respect to the opened hole 234 of the inner cover 23 of the casing 20 (the binding strap 240 passes through the opened hole 234, see Fig. 47) in the moving direction of the slide handle 300" can be only 88mm. Therefore, the overall dimensions of the fixed base 500 and the adjusting device 2 are more compact.

[00299] Moreover, as shown in Fig. 46, the fixed base 500 and the casing 20 of the adjusting device 2 can move towards the middle of the backrest 11 as a whole, for example, by 30 mm, which makes the position where the binding strap 240 applies force to the backrest 11 be more advantageous for the support of the binding strap 240 to the backrest 11.

[00300] In this embodiment, as shown in Figs. 47 and 49, the slide handle 300" can also be designed to have an operating component force exertion part 304" extending in a direction perpendicular to the moving direction of the slide handle 300" and away from the backrest 11, and the operating component force exertion part 304" can be in a shape of a trigger. In this way, the user can press the top of the fixed base 500 with a thumb and hook the operating component force exertion part 304" of the slide handle 300"’ with an index finger, thus facilitating to apply external force to the slide handle 300".

[00301] As shown in Fig. 48, a return spring 504 can also be arranged between the fixed base 500 and the slide handle 300", and the return spring 504 s arranged to drive the slide handle 300" to return the initial position where the bringing component 200 has not be driven.

[00302] The fourth embodiment of the unlocking mechanism

[00303] Figs. 27 to 30 show the fourth embodiment of the unlocking mechanism. The unlocking mechanism and other assemblies and their working principles in the adjusting device 2 to be unlocked are basically the same as those in the second embodiment, and similarly the push handle 300' which is sliding parallel to the extending direction of the backrest 11 is used as an operating component to drive the bringing component to move, except that the bringing component is no longer a flexible member capable of withstanding tensile force, but a rigid member 200'.

[00304] As shown in Fig. 30, the rigid bringing component 200' is arranged on a free side of the locking component 100 and extends through the inner cover 23. The inner cover 23 is provided with a slot hole 235 for the bringing component 200' to pass therethrough. The slot hole 235 has a curved strip shape, so as to allow the bringing component 200' to move up and down in the slot hole 235 following pivoting of the locking component 100. It should be understood, in another embodiment, the inner cover 23 may not be provided with the slot hole 235, instead, the inner cover 23 may be provided with a through hole 233 for the locking component 100 to be arranged therein. In this way, the bringing component 200' on the locking component 100 also naturally passes through the inner cover 23. In such case, the overall structure of the adjusting device 2 is more compact and has the advantage of a small thickness.

[00305] The push handle 300' is engaged with the bringing component 200'. When the user drives the push handle 300' to move, the push handle 300' brings the locking component 100 to move toward the unlocked position by being engaged with the rigid bringing component 200', thereby changing the adjusting device 2 from the locked state (see Fig. 28) to the unlocked state (see Fig. 29). the push handle 300' and the bringing component 200' may be two independent parts, or a single part integrally formed.

[00306] The fifth embodiment of the unlocking mechanism

[00307] Figs. 39-43 and 50- 55 shows the fifth embodiment of the unlocking mechanism. The unlocking mechanism and other assemblies and their working principles of the adjusting device 2 to be unlocked are basically the same as those in the third embodiment, except that the bringing component is removed, the operating component is in direct contact with the locking component, and the operating component is arranged to be capable of driving the locking component 100 to move toward the unlocked position under action of an external force. Therefore, the fifth embodiment of the unlocking mechanism can not only reduce the components of the unlocking mechanism and reduce the manufacturing cost, but also make functions of the unlocking mechanism more stable, and avoid the problems that a flexible bringing component may have, such as large sewing errors, no hand feeling in pulling process because of being lengthened due to flexibility, and difficult in sewing.

[00308] The first scheme of the fifth embodiment

[00309] Next, with reference to Figs. 39 to 43, the first scheme of the fifth embodiment will be explained by taking the example that the operating component is a slide handle 300" which drives the locking component 100 to move by moving on the fixed base 500, and the fixed base 500 is arranged on the backrest 11 (i.e., the first member).

[00310] However, it should be understood, the disclosure is not limited thereto, and the operating component is not necessarily on the fixed base 500, instead, it can be arranged to move along a direction parallel to the extending direction of the backrest 11 and drive the locking component 100 to move in other ways, such as a guide rail, a guide slot and the like.

[00311] In the embodiment shown in Figs. 41 and 42, the movement of the locking component 100 is a pivoting movement of the free side 102 surrounding the connecting side 101 of the locking component 100. However, in other embodiments, the movement of the locking component 100 may also be a sliding movement, or a combined movement of a pivoting movement and a sliding movement. For example, in the case that the movement of the locking component 100 is a sliding movement, the moving direction of the slide handle 300" may be the same as that of the locking component 100, so as to realize that the slide handle 300" is capable of driving the locking component 100 to move toward the unlocked position under action of an external force.

[00312] In order to realize that moving of the slide handle 300" can drive the locking component 100 to move, the slide handle 300" is provided with an operating component drive part, and the locking component lOOis provided with a locking component drive part. The operating component drive part and the locking component drive part are arranged to be able to interact with each other.

[00313] Specifically, in the case that the movement of the locking component 100 is a pivoting movement, in order to convert the sliding movement of the slide handle 300" into the pivoting movement of the locking component 100, in the first scheme shown in Figs. 39 to 43, the locking component drive part of the locking component 100 is an elongate locking component drive slot 105, and the operating component drive part of the slide handle 300" is an operating component drive pin 302" passing through the locking component drive slot 105. Moreover, the extending direction of the locking component drive slot 105 is inclined to the moving direction of the slide handle 300".

[00314] Therefore, when the slide handle 300" moves on the fixed base 500 under action of an external force, the operating component drive pin 302" arranged on the slide handle 300" will move following the slide handle 300". Since the extending direction of the locking component drive slot 105 is inclined to the moving direction of the slide handle 300" (i.e., the operating component drive pin 302"), the operating component drive pin 302" passing through the locking component drive slot 105 will apply a force to a side wall of the locking component drive slot 105 during the moving process, and the locking component drive slot 105 is separated from the connecting side 101 of the locking component 100 by a distance (see Fig. 42), so the force exerted on the locking component drive slot 105 will generate a moment to make the locking component 100 be pivoted toward the unlocked position. When the locking component 100 is pivoted to the unlocked position, the clamping portion 103 of the locking component 100 (see Figs. 41 and 42) disengages from the ratchet teeth on the ratchet wheel 244 of the adjusting device 2 (see Fig. 41), and the adjusting device 2 is changed from the locked state into the unlocked state.

[00315] As mentioned above, the adjusting device 2 may include an elastic component 28 (see Figs. 11 A and 12A), and the elastic component 28 may arranged to drive the locking component 100 to move toward the locked position, such that the locking component 100 tends to obstruct the ratchet wheel 244 from rotating.

[00316] The operating component drive pin 302" may be formed integrally with the slide handle 300", or a single member independent from the slide handle 300". For example, in the embodiment shown in Fig. 43, an operating component drive pin hole 306" for the operating component drive pin 302" to be inserted may formed on the slide handle 300". [00317] Of course, the disclosure is not limited the above.

[00318] The locking component drive slot 105 may be arranged on the slide handle 300", and the elongate operating component drive pin 302" may be arranged on the locking component 100. Moreover, the extending direction of the locking component drive slot 105 arranged on the slide handle 300" is also inclined to the moving direction of the slide handle 300". Such configuration can also realize that moving of the slide handle 300" can drive the locking component 100 to move.

[00319] In another embodiment, as shown in Figs. 50 to 55, one of the locking component drive part of the locking component 100 and the operating component drive part of the slide handle 300" may be a locking component drive protrusion 106, and the other of the locking component drive part of the locking component 100 and the operating component drive part of the slide handle 300" may be an operating component drive recess 307" cooperating with the locking component drive protrusion 106, the cooperating mode of them will be described in detail later.

[00320] In yet another embodiment, the movement of the locking component 100 may be a sliding movement. In such case, since the moving direction of the slide handle 300" may be the same as that of the locking component 100, the operating component drive part of the slide handle 300" can bring the locking component drive part of the locking component 100 toward the same direction in various ways.

[00321] The slide handle 300" and the fixed base 500 in the fifth embodiment can adopt the slide handle 300" and the fixed base 500 in the third embodiment.

[00322] For example, as shown in Figs. 39 to 41, the fixed base 500 may be arranged on the backrest 11 through the fixing pin 600, and the chute 303" is correspondingly arranged on the slide handle 300" for the fixing pin 600 to pass therethrough.

[00323] As another example, the fixed base 500 may include a locating structure 502. The locating structure 502 is arranged to limit the moving path of the slide handle 300". As shown in Figs. 39 to 41, the locating structure 502 may be two locating protrusions adjacent to both sides of the slide handle 300".

[00324] For another example, a return spring 504 may be arranged between the fixed base 500 and the slide handle 300". The return spring 504 is arranged to drive the slide handle 300" to return to the initial position where the locking component 100 has not been driven. When the slide handle 300" is no longer acted by external force, the return spring 504 will drive the slide handle 300" toward the initial position, such that the operating component drive pin 302" arranged on the slide handle 300" moves following the slide handle 300". During the process, similarly because the extending direction of the locking component drive slot 105 is inclined to the moving direction of the slide handle 300" (i.e., the operating component drive pin 302"), the operating component drive pin 302" passing through the locking component drive slot 105 will apply an acting force to side wall of the locking component drive slot 105 during the moving process, and the acting force will generate a moment to make the locking component 100 be pivoted toward the locked position. When the locking component 100 is pivoted to the locked position, the clamping portion 103 of the locking component 100 (see Figs. 41 and 42) engages with the ratchet teeth on the ratchet wheel 244 (see Fig. 41), and the adjusting device 2 is changed from the unlocked state to the locked state.

[00325] For another example, the slide handle 300" may have an operating component force exertion part 304" as mentioned above, which extends in a direction perpendicular to the moving direction of the slide handle 300" and away from the backrest 11, so as to facilitate the user to apply external force to the slide handle 300". The operating component force exertion part 304" may be in a shape of a trigger.

[00326] The second scheme of the fifth embodiment

[00327] Next, the second scheme of the fifth embodiment will be described with reference to Figs. 50 to 55, taking the operating component as a slide handle 300" driving the locking component 100 to move by moving on the casing 20 of the adjusting device 2

[00328] When the casing 20 of the adjusting device 2 is composed of a second outer cover 22 and an inner cover 23, as shown in Figs. 50 to 52, the second outer cover 22 contacts and is arranged on the backrest 11, and the inner cover 23 is away from the backrest 11, so the slide handle 300" can move on an outer surface of the inner cover 23.

[00329] In the embodiment shown in Figs. 53 and 55, the movement of the locking component 100 is a pivoting movement of the free side 102 of the locking component 100 surrounding the connecting side 101. However, in other embodiments, the movement of the locking component 100 may also be a sliding movement, or a combined movement of a pivoting movement and a sliding movement. For example, in the case that the movement of the locking component 100 is a sliding movement, the moving direction of the slide handle 300" may be the same as that of the locking component 100, so as to realize that the slide handle 300" is capable of driving the locking component 100 to move toward the unlocked position under action of an external force.

[00330] In the case that the movement of the locking component 100 is a pivoting movement, in order to convert the sliding movement of the slide handle 300" into the pivoting movement of the locking component 100, in the second scheme shown in Figs. 50 to 55, the locking component drive part of the locking component 100 is a locking component drive protrusion 106 with a locking component inclined surface 106A arranged thereon, and the operating component drive part of the slide handle 300" is an operating component drive recess 307" with an operating component inclined surface 307A" arranged thereon. Moreover, the locking component inclined surface 106A and the operating component inclined surface 307A" abut against each other, and their inclined directions are inclined to the moving direction of the slide handle 300", such that the movement of the slide handle 300" can drive the locking component 100 to be pivoted .

[00331] Thus, when the slide handle 300" moves on the casing 20 under action of the external force, the operating component drive recess 307" arranged on the slide handle 300" will move following the slide handle 300". Since the operating component inclined surface 307 A" arranged on the operating component drive recess 307" and the locking component inclined surface 106A arranged on the locking component drive protrusion 106 abut against each other, and their inclined directions are inclined to the moving direction of the slide handle 300", the operating component drive recess 307" will apply an acting force perpendicular to the locking component inclined surface 106A on the locking component drive protrusion 106 during the moving process, and the locking component drive protrusion 106 is separated from the connecting side 101 of the locking component 100 by a distance (see Fig. 53), accordingly, the acting force received by the locking component drive protrusion 106 will generate a moment to make the locking component 100 be pivoted toward the unlocked position. When the locking component 100 is pivoted to the unlocked position, the clamping portion 103 of the locking component 100 (see Fig. 53) is disengaged from the ratchet teeth on the ratchet wheel 244 of the adjusting device 2 (see Fig. 55), and the adjusting device 2 is changed from the locked state into the unlocked state.

[00332] Of course, the disclosure is not limited the above.

[00333] The locking component drive protrusion 106 may be provided on the slide handle 300", and the operating component drive recess 307" may be formed as a groove disposed on the locking component 100. Moreover, both the locking component drive protrusion 106 and the operating component drive recess 307" may be provided with inclined surfaces which abut against each other, and the inclined direction of the inclined surfaces is also inclined to the moving direction of the slide handle 300". Such configuration can also realize that the movement of the slide handle 300" can drive the locking component 100 to move.

[00334] In yet another embodiment, the movement of the locking component 100 may be a sliding movement. In such case, since the moving direction of the slide handle 300" may be the same as that of the locking component 100, the operating component drive part of the slide handle 300" may bring the locking component drive part of the locking component 100 to move in the same direction in various ways.

[00335] In order to realize the slide handle 300" moving on the casing 20 of the adjusting device 2, as shown in Figs. 51, 52 and 55, the slide handle 300 may be provided with an operating component guide part 308", and the casing 20 may be provided with a casing guide part 236 cooperating with the operating component guide part 308", so as to guide the slide handle 300" moving on the casing 20.

[00336] For example, the operating component guide part 308" may be arranged to be two sides of the slide handle 300", and the casing guide part 236 may be arranged to be two locating protrusions on the casing 20 to allow the two sides of the slide handle 300" to slide therein. In the embodiment shown in Figs. 54 and 55, each of the two sides is respectively provided with an elastic fin 308A" which can be elastically retracted inward, and a width between outer edges of the two elastic fins 308A" is variable along the moving direction of the slide handle 300". Each of the two locating protrusions is respectively provided with a casing guide face (not shown) inclined to the moving direction of the slide handle 300", such that after the two sides are assembled on the two locating protrusions, an elastic pushing action between the elastic fins 308A" and the casing guide faces will drive the slide handle 300" to move in a direction away from the locking component 100. Specifically, referring to Figs. 51, 52, 54 and 55, when the user operates the slide handle 300" to move upward on the casing 20 to move upward on the locking component 100 to move toward the unlocked position, the elastic fins 308A" are pressed by the inclined casing guide faces to be further elastically retracted inward, such that a greater elastic pushing action is generated between the elastic fins 308A" and the casing guide faces; and after the user releases the slide handle 300", the elastic pushing action between the elastic fins 308A" and the inclined casing guide faces will drive the slide handle 300" to move downward on the casing 20 in the direction away from the locking component 100, thus realizing self-resetting of the slide handle 300" and facilitating the locking component 100 to quickly return to the locked position.

[00337] As another example, the casing guide part 236 and the operating component guide part 308" may be cooperated as one is a guide slot and the other is a guide pin.

[00338] Similar to the first scheme, as shown in Fig. 55, a return spring 504 may be arranged between the casing 20 of the adjusting device 2 and the slide handle 300". The return spring 504 is arranged to drive the slide handle 300" to return the initial position where the locking component 100 has not been driven. When the slide handle 300" is no longer acted by external force, the return spring 504 will drive the slide handle 300" to move towards the initial position, such that the operating component drive recess 307" arranged on the slide handle 300" moves following the slide handle 300". During this process, the operating component drive recess 307" and the locking component drive protrusion 106 will be out of contact, such that the locking component 100 can pivoted toward the locked position.

[00339] In addition, as shown in Figs. 50 to 55, the slide handle 300" in the scheme may also have the aforementioned operating component force exertion part 304", which extends in a direction perpendicular to the moving direction of the slide handle 300" and away from the backrest 11, so as to facilitate the user to apply external force to the slide handle 300". The operating component force exertion part 304" may be in a shape of a trigger. In an embodiment, the operating component force exertion part 304" may be arranged above the opened hole 234 of the inner cover 23 of the casing 20 (the binding strap 240 passes through the opened hole 234), such that the operating component force exertion part 304" is located above the binding strap 240 supporting the backrest 11.

[00340] Different from the first scheme, as shown in Figs. 50 to 55, the casing 20 of the adjusting device 2 may be provided with a casing extension 237 which extends in a direction perpendicular to the moving direction of the slide handle 300" and away from the backrest 11. Moreover, the casing extension 237 is arranged between the operating component force exertion part 304" and the operating component drive recess 307" of the operating component 300". In this way, the user can press the casing extension 237 with as thumb, and hook the operating component force exertion part 304” of the slide handle 300” with a forefinger, thereby facilitating to apply external force to the slide handle 300".

[00341] The reel obstructer

[00342] As shown in Fig. 56, when assembling the adjusting device 2 to the baby stroller 1, the assembler needs to pull the binding strap 240 out of the adjusting device 2 and lock it to the frame 13 of the baby stroller 1 (e.g., by screws and the like) . However, in this process, as shown in Figs. 57 and 58, since the clockwork spring 25 in the adjusting device 2 (see Fig. 58) tends to make the reel 24 in the winding direction DI rotate, the binding strap 240 tends to be wound on the reel 24, so the binding strap 240 tends to retract into the adjusting device 2. Meanwhile, in the case that the ratchet wheel 244 is arranged on the reel 24 shown in Figs. 57 and 58, the locking component 100 can only obstruct the ratchet wheel 244 (i.e., the reel 24) from rotating in the unwinding direction D2, but cannot obstruct the ratchet wheel 244 (i.e., the reel 24) from rotating in the winding direction DI. Therefore, it is difficult for the assembler to keep the binding strap 240 in the state of being pulled out of the adjusting device 2 during assembly process, which increases the difficulty for the assembler to fix the binding strap 240 to the frame 13.

[00343] In order to prevent the binding strap 240 from retracting back into the adjusting device 2 after being pulled out of the adjusting device 2, so as to facilitate the assembly work of the assembler, as shown in Figs. 59 to 69, the casing 20 of the adjusting device 2 is provided with a casing through hole 20A penetrating therethrough, such that a reel obstructer can pass through the casing through hole 20A from the outside of the adjusting device 2 to obstruct the ratchet wheel 244 on the reel 24 from rotating.

[00344] When assembling the baby stroller 1, the assembler can firstly pull the binding strap 240 out of the adjusting device 2, and then obstructs the ratchet wheel 244 on the reel 24 from rotating by using the reel obstructer, such that the reel 24 will not wind up the binding strap 240 until the assembler finishes assembling of the baby stroller 1, and then moves the reel obstructer so it does no longer obstruct the ratchet wheel 244 from rotating.

[00345] Figs. 59 to 63 show the first embodiment of the reel obstructer, in which the reel obstructer is a connected reel obstructer A29 formed integrally with the casing 20.

[00346] Specifically, as shown in Figs. 59 to 63, the connected reel obstructer A29 may include: a connected obstructing part A291, that can pass through the casing through hole 20A to engage with the ratchet teeth of the ratchet wheel 244; a connected bending part A292, the connected reel obstructer A29 can be formed integrally with the casing 20 via the connected bending part A292.

[00347] Although the connected reel obstructer A29 is formed integrally with the casing 20, the connected reel obstructer A29 can move in respect to the casing 20, so as to allow the connected obstructing part A291 to pass through the casing through hole 20 A. Therefore, the connected bending part A292 is arranged such that the connected obstructing part A291 can move between an engaged position where the connected obstructing part A291 is engaged with the ratchet teeth of the ratchet wheel 244 and a disengaged position where the connected obstructing part A291 is disengaged from the ratchet teeth of the ratchet wheel 244.

[00348] In an embodiment, the connected bending part A292 may be set to have a thickness much smaller than the thickness of other parts of the connected reel obstructer A29 and the thickness of the casing 20. Alternatively, the connected bending part A292 may be formed into a folded structure.

[00349] Since the connected reel obstructer A29 is formed integrally with the casing 20, the connected reel obstructer A29 and the casing 20 can be integrally formed in manufacturing. Moreover, the assembler does not need additional tools when assembling the baby stroller 1, and can keep the binding strap 240 in the state of being pulled out of the adjusting device 2 by directly using the connected reel obstructer A29, which avoids the problem that the assembler occasionally has no suitable tools to affect assembly.

[00350] In addition, after the baby stroller 1 is assembled, the user does not need the connected reel obstructer A29 when using the baby stroller 1, so the connected reel obstructer A29 may be arranged to be separated from the casing 20 by cutting off the connected bending part A292.

[00351] Figs. 64 to 69 shows the second embodiment of the reel obstructer, in which the reel obstructer is an independent reel obstructer B29, C29 independent of the casing 20, and includes an independent obstructing part B291, C291. The independent obstructing part B291, C291 can engage with the ratchet teeth of the ratchet wheel 244.

[00352] In the process of assembling the baby stroller 1, the assembler needs the independent obstructing part B291, C291 to be kept in the position of being engaged with the ratchet teeth of the ratchet wheel 244. That is, it is necessary to keep the independent reel obstructer B29, C29 stationary in respect to the casing 20. [00353] In order to realize this purpose, in the embodiment shown in Figs. 64 to 66, the casing 20 may include a casing middle connecting hole 20B above the casing through hole 20A, and the independent reel obstructer B29 may include a middle connected protrusion B292 which can be connected to the casing middle connecting hole 20B.

[00354] Through an engagement of the casing middle connecting hole 20B of the casing 20 with the middle connected protrusion B292 of the independent reel obstructer B29, the independent reel obstructer B29 is engaged to the casing 20, such that the independent obstructing part B291 is kept in a position of being engaged with the ratchet teeth of the ratchet wheel 244.

[00355] In addition, the independent reel obstructer B29 may further include an independent handle part B293 to facilitate the assembler to move the independent reel obstructer B29. When the baby stroller 1 is assembled, the assembler can disengage the independent reel obstructer B29 from the casing 20 by applying force to the independent handle part B293.

[00356] Similarily, in order to achieve the above purpose, in the embodiment shown in Figs. 67 to 69, the casing 20 may include a casing lower connecting hole 20C below the casing through hole 20A, and the independent reel obstructer C29 may include a lower connected protrusion C292 which can be connected to the casing lower connecting hole 20C.

[00357] Through an engagement of the casing lower connecting hole 20C of the casing 20 with the lower connected protrusion C292 of the independent reel obstructer C29, the independent reel obstructer C29 is engaged to the casing 20, such that the independent obstructing part C291 is kept in a position of being engaged with the ratchet teeth of the ratchet wheel 244.

[00358] It should be understood, although in the embodiment shown in Figs. 67 to 69, the independent reel obstructer C29 is basically plate-shaped, the independent reel obstructer C29 may be in other suitable shapes such as a block.

[00359] After the baby stroller 1 is assembled, the independent reel obstructer B29 , C29 can be moved away from the casing 20 of the adjusting device 2, so one independent reel obstructer B29 , C29 can be used for assembling a plurality of baby strollers 1, which can reduce the manufacturing cost.

[00360] In addition, although in the embodiment shown in Figs. 59 to 69, the ratchet wheel 244 is arranged on the reel 24, the disclosure is not limited thereto. Specifically, the reel 24 may be provided with a gear 246 (see Fig. 12B), and the reel obstructer may also pass through the casing through hole 20 A from the outside of the adjusting device 2 to obstruct the gear 246 from rotating.

[00361] The reel driver

[00362] In the process of assembling the adjusting device 2, after the clockwork spring 25 is mounted to the reel 24, the clockwork spring 25 is required to be preloaded (i.e., to rotate the reel 24 in the arrow direction in Fig. 70 to wind up the clockwork spring 25). However, the reel 24 is difficult to be rotate manually, so tools are necessary to operate it.

[00363] The disclosure provides a reel driver 24D, which is arranged to be able to drive the reel 24 of the adjusting device 2 to rotate.

[00364] Specifically, as shown in Figs. 70 to 73, the reel driver 24D may include a reel driver body 24D4 and reel driver engaging parts 24D1, 24D2, in which the reel driver engaging parts 24D1, 24D2 are arranged on the reel driver body 24D4 and can be engaged with reel engaging parts 24 Al, 24 A2 of the reel 24. When the reel driver 24D rotates, by engagement of the reel driver engaging parts 24D1, 24D2 with the reel engaging parts 24A1, 24A2, the reel 24 is driven to rotate.

[00365] In the embodiment shown in Fig. 71, the reel driver engaging parts 24D1, 24D2 are engaging bulges, and the reel engaging parts 24A1, 24 A2 are engaging concaves, so as to realize engagement of between the reel driver engaging parts 24D1, 24D2 and the reel engaging parts 24A1, 24A2.

[00366] It should be understood, the disclosure is not limited thereto. Specifically, the reel driver engaging parts 24D1, 24D2 may be engaging concaves, and the reel engaging parts 24A1, 24 A2 may be engaging bulges. Alternatively, the reel driver engaging parts 24D1, 24D2 and the reel engaging parts 24A1, 24 A2 may adopt other cooperating structures.

[00367] In the embodiment shown in Figs. 70 to 73, the reel driver body 24D4 has a cylindrical shape and is arranged to be accommodated in the accommodating hole 242 within the reel 24. It should be understood, the reel driver body 24D4 may have other shape, and the size of the reel driver body 24D4 may be equivalent to or different from that of the reel 24.

[00368] In addition, in the embodiment shown in Figs. 70 to 73, there are two reel driver engaging parts 24D1, 24D2, and the two reel driver engaging parts 24D1, 24D2 are respectively arranged on two extending parts extending radially ourward from the reel driver body 24D4, so as to be engaged with two reel engaging parts 24 Al, 24 A2 arranged on the reel 24. Moreover, the two reel driver engaging parts 24D1, 24D2 are arranged symmetrically in respect to a rotation center of the reel 24

[00369] However, the disclosure is not limited the above. There may be one or more reel driver engaging parts. If there are two or more reel driver engaging parts, they may be arranged symmetrically or asymmetrically in respect to the rotation center of the reel 24. Moreover, the reel driver body 24D4 may be arranged to has a size greater than or equal to that of the reel 24, such that the reel driver engaging parts may be directly arranged on the reel driver body 24D4.

[00370] In order to facilitate the assembler to apply acting force to the reel driver 24D to drive the reel 24 to rotate, the reel driver 24D may include a reel driver operating part 24D3 which is arranged to be able to drive the reel driver 24D to rotate under the action of external force.

[00371] In the embodiment shown in Figs. 70 to 73, the reel driver operating part 24D3 is a rocker arranged on one of the extending parts extending radially outward from the reel driver body 24D4. Since rocker 24D3 is separated from the rotation center of the reel driver 24D (i.e., the rotation center of the reel 24) by a distance , when the assembler applies an acting force along the circumferential direction of the reel driver 24D to the rocker 24D3, the reel driver 24D will rotate, thereby driving the reel 24 to rotate.

[00372] But it should be understood, the reel driver operating part 24D3 may be arranged on the reel driver body 24D4. In addition, the reel driver operating part 24D3 may be a knob which can be turned by the assembler. When the knob is turned to rotate, it will drive the reel driver 24D to rotate. Alternatively, the reel driver 24D may not be provided with a special reel driver operating part, instead, the reel driver body 24D4 may be formed in a long strip shape, so as to facilitate the assembler to rotate the reel driver 24D.

[00373] Although the above embodiments are all described by taking the application of the unlocking mechanism to a baby stroller as examples, the above embodiments of the unlocking mechanism according to the disclosure and other embodiments falling within the protection scope of the disclosure can also be applied to occasions of unlocking the relative locating between two members in other fields.

[00374] The box to which the unlocking mechanism is applied

[00375] Next, the description will take the occasion where the unlocking mechanism according to the disclosure is used to adjust an opening and/or closing degree of a box as an example.

[00376] As shown in Figs. 31 to 34, the box 3 has a covering part 31 as a first member and a box body 32 as a second member. The covering part 31 is, for example, a door or a cover, which can move in respect to the box body 32, so as to, for example, open or close an opening (not shown) in the box body 32.

[00377] Although in the embodiments shown in Figs. 31 to 34, the movement of the covering part 31 in respect to the box body 32 is a pivoted opening and/or closing, in other embodiments, the movement of the covering part 31 in respect to the box body 32 may be a slid opening and/or closing, or a rotated opening and/or closing.

[00378] In the embodiment as shown in Fig. 31, a covering part 31 may cover an upper part of the box body 32. However, the disclosure is not limited thereto. In another embodiment, the covering part 31 may cover a side or lower part of the box body 32. In yet another embodiment, a plurality of covering parts 31 may be provided, e.g., in the embodiment shown in Fig. 34, two covering parts 31, 31' respectively cover the upper and lower parts of the box body 32.

[00379] In the embodiments shown in Figs. 31 to 34, the adjusting device 2 according to the disclosure can be used to adjust and position the covering part 31 in respect to the box body 32. The adjusting device 2 can be installed in the covering part 31, and two ends of the binding strap 240 extending from the adjusting device 2 are respectively fixed to the box body 32. It should be noted, in Figs. 31 to 34, a part of the binding strap 240 is sheltered by the covering part 31 or the box body 32, so these parts of the binding strap 240 are schematically shown by dotted lines.

[00380] By the binding strap 240 being wound on or unwound from the reel 24 in the adjusting device 2, the position of the covering part 31 in respect to the box body 32 can be adjusted. Moreover, by engagement of the locking component 100 in the adjusting device 2 and the locating component, the position of the covering part 31 in respect to the box body 32 can be located. Various embodiments of the above the unlocking mechanism according to the disclosure can be used for locking the adjusting device 2 to enable the covering part 31 to move in respect to the box body 32.

[00381] Of course, the disclosure is not limited the above. In other embodiments, the covering part 31 can be locked and unlocked in respect to the box body 32 in other ways. For example, locking and unlocking of the covering part 31 in respect to the box body 32 can be realized by various common latch mechanisms in engineering. In general, these common latch mechanisms adopt a locking component which can move between a locked position and an unlocked position and a locating component which cooperates with the locking component 100. By engaging or disengaging of the locking component in respect to the locating component, the latch mechanism is locked and unlocked, thereby realizing enabling or disabling of the covering part 31 to move in respect to the box body 32. For example, the latch mechanism for the box 3 may adopt a cooperation of a bolt and a jack, in which the bolt is a locking component, and the jack is a locating component; or a cooperation of a clasp and a snap ring, in which the clasp is a locking component, and the snap ring is a locating component.

[00382] The latch mechanism for the box 3 adopts a locking component which can move between a locked position and an unlocked position, such that the unlocking mechanism according to the disclosure can also be used for unlocking the latch mechanism of the box 3.

[00383] In the embodiments shown in Figs. 31 to 34, the first embodiment of the unlocking mechanism according to the disclosure is adopted to unlock the adjusting device 2 of the box 3. The unlocking mechanism includes a flexible bringing component 200 and a pull handle 300 as an operating component. One end of the bringing component 200 is connected to the pull handle 300, and the other end of the bringing component 20 is connected to the locking component 100 of the adjusting device 2 in the box 3. As shown in Fig. 32, when the pull handle 300 is exerted with an external force as shown by the arrow, the pull handle 300 brings the locking component 100 to move to the unlocked position via the bringing component 200, thereby unlocking the adjusting device 2 of the box 3.

[00384] Meanwhile, as shown in Figs. 33 and 34, when an external force in the same direction exerted on the pull handle 300 has the function of making the covering part 31 move in respect to the box body 32, the pull handle 300 can not only bring the locking component to move to the unlocked position, but also bring the covering part 31 to move to in respect to the box body 32, such that the box 3 is, for example, opened or closed.

[00385] Therefore, the first embodiment of the unlocking mechanism according to the disclosure enables the user to unlock a locking of the covering part 31 in respect to the box body 32 by only one force exerting action in the same direction and enables the covering part 31 to move in respect to the box body 32, which greatly facilitates the user's operation.

[00386] It should be understood, although not shown, other embodiments of the unlocking mechanism according to the disclosure can also be used to unlock the adjusting device 2 of the box 3. The user can firstly exerts an external force to the operating component to unlock the locking of the covering part 31 in respect to the box body 32, and then exerts an external force in the same direction or different direction to the operating component to make the covering part 31 move in respect to the box body 32, or exerts an external force to the covering part 31 with the other hand to make the covering part 31 move in respect to the box body 32.

[00387] Similarly, in other embodiments, several embodiments of the unlocking mechanism according to the disclosure can be used to unlock the latch mechanism for the box 3, and its operation process is the same as the above operation process of the embodiment shown in Figs. 31 to 34, so they are not redundantly repeated here.

[00388] The baby carrying strap applied by the unlocking mechanism

[00389] Hereinafter, the unlocking mechanism according to the disclosure for will be described by taking the occasion of being used to adjust a baby carrying strap as an example.

[00390] The baby carrying strap 4 is common equipment for holding a baby. As shown in Figs. 35 to 38, the baby carrying strap 4 includes a carrying component 41 which can be worn on a user and a supporting component 42 connected to the carrying component 41 for carrying a baby. Among them, the carrying component 41 serves as a second member, and the supporting component 42 serves as a first member. As the first member, the carrying component 41 includes two shoulder straps 411 and a waist part 412. Front ends of the shoulder straps 411 are connected to the supporting component 42 through the binding strap 240, and rear ends of the shoulder straps 411 are connected to a middle part of the supporting component 42. The waist part 412 is connected to a lower part of the supporting component 42. It should be noted, in Figs. 35 to 37, a part of the binding strap 240 is sheltered by the baby carrying strap 4, so these parts of the binding strap 240 are schematically shown by dotted lines.

[00391] When a user uses the baby carrying strap 4 to bear a baby, it is usually necessary to adjust an angle of the supporting component 42 of the baby carrying strap 4 in respect to the shoulder straps 411 of the carrying component 41, so as to reach a degree that the user or the baby feels comfortable, and it is hoped that the supporting component 42 can remain at this angle when the adjustment is finished. As shown in Fig. 37, angle adjustment of the supporting component 42 in respect to the shoulder straps 411 of the carrying component 41 is realized by a length of the binding strap 240. The longer the binding strap 240 is, the greater the angle of the supporting component 42 in respect to the shoulder straps 411 will be; and the shorter the binding strap 240 is, the smaller the angle of the supporting component 42 in respect to the shoulder straps 411 will be. Therefore, the above adjusting device 2 (shown by dotted lines in Fig. 36) can be mounted inside the supporting component 42 of the baby carrying strap 4, and the angle of the supporting component 42 of the baby carrying strap 4 in respect to the shoulder straps 411 can be adjusted and maintained by controlling the length of the binding strap 240 through the unlocking mechanism according to the disclosure adjusting device.

[00392] In the embodiments shown in Figs. 35 to 38, the first embodiment of the unlocking mechanism according to the disclosure is adopted to unlock the adjusting device 2 of the baby carrying strap 4. The unlocking mechanism includes a flexible bringing component 200 and a pull handle 300 as an operating component. One end of the bringing component 200 is connected to the pull handle 300, and the other end of the bringing component 200 is connected to the locking component 100 of the adjusting device 2 in the baby carrying strap 4. One end of each of the binding straps 240 is connected to the supporting component 42 through the adjusting device 2, and the other end of each of the binding straps 240 is connected to the shoulder straps 411. As shown in Fig. 35, when the pull handle 300 is exerted with an external force as shown by the arrow, the pull handle 300 brings the locking component 100 to move to the unlocked position via the bringing component 200, thereby unlocking the adjusting device 2 in the baby carrying strap 4, such that he binding strap 240 of the adjusting device 2 can be shorten or lengthen by being wound or unwound.

[00393] Meanwhile, as shown in Fig. 36, when the external force exerted to the pull handle 300 has a function of increasing the angle of the supporting component 42 in respect to the shoulder straps 411, the pull handle 300 can not only bring the locking component 100 to move to the unlocked position, but also bring the supporting component 42 to move in respect to the shoulder straps 411, thereby adjusting the angle of the supporting component 42 in respect to the shoulder straps 411, allowing the baby to he on the supporting component 42 at different inclinations.

[00394] As shown in Fig. 38, the angle of the supporting component 42 in respect to the shoulder straps 411 is approximately 180 degrees and sags. At this time, the baby carrying strap is completely untied, and the binding strap 240 is unwound at most and extended to the longest.

[00395] Therefore, the first embodiment of the unlocking mechanism according to the disclosure enables the user to unlock the adjusting device 2 in the baby carrying strap 4 and adjust the angle of the supporting component 42 of the baby carrying strap 4 in respect to the shoulder straps 411 to increase with only one action, which greatly facilitates the user's operation.

[00396] It should be understood, although not shown, other embodiments of the unlocking mechanism according to the disclosure can also be used to unlock the adjusting device 2 in the baby carrying strap 4, so as to adjust the angle of the supporting component 42 of the baby carrying strap 4 in respect to the shoulder straps 411. The user can choose to firstly exert an external force to the operating component to unlock the adjusting device 2 in the baby carrying strap 4, and then exert an external force in other direction to the operating component to adjust the angle of the supporting component 42 in respect to the shoulder straps 411, or exert an external force to the supporting component 42 with the other hand to adjust the angle of the supporting component 42 in respect to the shoulder straps 411.

[00397] The anti-skip scheme of the backrest of the baby stroller

[00398] In the adjusting device 2 according to the disclosure, if the locating component on the reel 24 is a one-way located ratchet wheel 244, when the baby stroller 1 passes through an uneven or obstacled ground, since the baby stroller 1 would experience bumps, the ratchet wheel 244 and the reel 24 on which it is located will vibrate accordingly. In this process, since rotation of the ratchet wheel 244 in the winding direction DI is not obstructed by the locking component 100, and the clockwork spring 25 in the reel 24 tends to cause the ratchet wheel 244 and the reel 24 on which it is located to rotate in the winding direction DI, the reel 24 may rotate in the winding direction DI and wind the binding strap 240 due to vibration. As a result, the effective length of the binding strap 240 required for bearing the backrest 11 will be shortened, which causes the backrest 11 of the baby stroller 1 to move towards the upright position, such that a phenomenon of automatic skip occurs in the backrest 11, resulting in that the stroller in use cannot satisfy the requirements and regulations for a baby stroller, and there are potential safety problems.

[00399] The backrest 11 of the baby stroller 1 may move towards the upright position due to an automatic skip to such extent that the angle between the backrest 11 and the sitting part 12 is less than 150°, which is unfavorable for babies aged 0-6 months. Therefore, it is necessary to overcome the problem that the backrest 11 is automatically skipping.

[00400] Next, several anti-skip schemes will be described in detail with the attached drawings. [00401] The first anti-skip scheme

[00402] Figs. 74 to 82 show the first anti-skip scheme according to the disclosure, in which the operating component is a slide handle 300" formed integrally with the locking component 100. When the user operates the slide handle 300" to make it slide up and down in respect to the casing 20 of the adjusting device 2 (see Fig. 77), the locking component 100 also slides up and down together with it.

[00403] In the first anti-skip scheme, as shown in Figs. 77 to 82, the locating component on the reel 24 is a two-way located gear 246. Correspondingly, the locking component 100 is provided with a clamping portion 103 to cooperate with the gear 246.

[00404] When the locking component 100 moves down to the locked position, such that the clamping portion 103 of the locking component 100 is engaged with the gear 246 on the reel 24, as shown in Figs. 78, 80 and 81, rotation of the gear 246 on the reel 24 is obstructed by the locking component 100, the reel 24 can neither rotate in the winding direction DI, nor in the unwinding direction D, and the adjusting device 2 is in the locked state. Therefore, even if the baby stroller 1 bumps, the reel 24 will not rotate to wind the binding strap 240, which will prevent the backrest 11 of the baby stroller 1 rom moving, thereby effectively preventing the backrest 11 from automatic skip.

[00405] When the locking component 100 moves upward to the unlocked position, such that the clamping portion 103 of the locking component 100 is disengaged from the gear 246 on the reel 24, as shown in Figs. 79 and 82, rotation of the gear 246 on the reel 24 is no longer obstructed by the locking component 100, the reel 24 can rotate either along the winding direction DI or along the unwinding direction D, and the adjusting device 2 is in the unlocked state, then the user can adjust the backrest 11 to move towards the upright position or the lying position.

[00406] In the embodiment shown in Figs. 78 to 82, the slide handle 300" and the locking component 100 are connected to the second outer cover 22 of the adjusting device 2 through a guide pin 700. Meanwhile, the locking component 100 is provided with a guide slot for the guide pin 700 to slide therein, thereby guiding and locating the slide handle 300" and the locking component 100 to slide up and down.

[00407] In the embodiment shown in Figs. 77 to 82, the adjusting device 2 may include a slide handle elastic component 29. The slide handle elastic component 29 is arranged to drive the locking component 100 to move to the locked position, such that the locking component 100 tends be in the locked state to obstruct rotation of the gear 246.

[00408] The second anti-skip scheme

[00409] Fig. 83 shows the second anti-skip scheme according to the disclosure, in which although the locating component on the reel 24 is a ratchet wheel 244, the ratchet wheel 244 adopts a barbed ratchet wheel.

[00410] As shown in Fig. 83, an upper side of each ratchet tooth of the barbed ratchet wheel 244 is provided with a limit barb 244A.

[00411] Correspondingly, the clamping portion 103 of the locking component 100 is provided with limit recesses 103 A cooperating with the limit barbs 244A.

[00412] When the clamping portion 103 of the locking component 100 is engaged with the ratchet teeth on the barbed ratchet wheel 244, the limit barbs 244A of the ratchet teeth enter the limit recesses 103 A of the clamping portion 103, such that if the barbed ratchet wheel 244 rotates in the winding direction DI, the limit barbs 244A will abut against side walls of the limit recesses 103 A, resulting in rotation of the barbed ratchet wheel 244 in the winding direction DI is obstructed by the clamping portion 103. Moreover, when the clamping portion 103 of the locking component 100 is engaged with the ratchet teeth on the barbed ratchet wheel 244, rotation of the barbed ratchet wheel 244 in the unwinding direction D is also obstructed by the clamping portion 103. That is, two way rotation of the barbed ratchet wheel 244 is obstructed by the locking component 100. Therefore, the barbed ratchet wheel 244 can ensure that the reel 24 can neither rotate in the winding direction DI, nor in the unwinding direction D, which prevents the backrest 11 of the baby stroller 1 from moving, thereby effectively preventing the backrest 11 from automatic skip.

[00413] The third anti-skip scheme

[00414] Figs. 84 to 86 show the third anti-skip scheme according to the disclosure, in which although the locating component on the reel 24 is a ratchet wheel 244, the ratchet wheel 244 adopts a big-tooth ratchet wheel.

[00415] As shown in Fig. 84, in the big-tooth ratchet wheel 244 according to the disclosure, the number of the ratchet teeth is 8 -15, and a ratchet tooth inclination angle 0 (i.e., an included angle between a ratchet tooth inclination surface 244B and a tangential direction of the ratchet wheel 244) is 20°-25° [00416] In an embodiment, the number of the ratchet teeth of the big-tooth ratchet wheel 244 is 12, and the ratchet tooth inclination angle 0 is 21.5°.

[00417] Or alternatively, in the big-tooth ratchet wheel 244 according to the disclosure, the outer diameter LI is 45 mm-50 mm, the diameter L2 of a dedendum circle is 35 mm-40 mm, the number of the ratchet teeth is 8 to 15, and the tooth depth H of each ratchet tooth is 4 mm-5 mm.

[00418] In an embodiment, the outer diameter LI of the big-tooth ratchet wheel 244 is 48.4 mm, the diameter L2 of the dedendum circle is 40 mm, the number of the ratchet teeth is 12, and the tooth depth H of each ratchet tooth is 4.2mm.

[00419] By using the big-tooth ratchet wheel 244, the number of teeth can be reduced, the tooth depth can be increased, and the ratchet tooth inclination angle 0 can be increased. Therefore, the engagement angle between the clamping portion 103 of the locking component 100 and a ratchet tooth is also greatly increased, such that a resistance for the clamping portion 103 of the locking component 100 to slide over the ratchet teeth is increased. That is, the resistance of the big-tooth ratchet wheel 244 and the reel 24 on which it is located in the winding direction DI is increased, so automatic skip is not easy to occur in the backrest 11.

[00420] In addition, in the embodiment shown in Figs. 84 to 86, an edge of the reel surface of the reel 24 for the ratchet wheel 244 to be disposed thereon may be provided with a guide portion 247 for guiding the locking component 100 to return to the locked position. The guide portion 247 can provide a guiding function for the locking component 100, so as to facilitate the locking component 100 to return to the original locked position. For example, the guide portion 247 may be a chamfer.

[00421] The fourth anti-skip scheme

[00422] Fig. 87 show the fourth anti-skip scheme according to the disclosure, in which, as shown in Fig. 87, an operating component such as the pull handle 300 and the like disposed on the backrest 11 may be connected to a food basket 15 of the baby stroller 1 through an anti-skip connecting component 14.

[00423] In this embodiment, since one end of the anti-skip connecting component 14 is connected to the operating component disposed on the backrest 11, and the other end is connected to the food basket 15 of the baby stroller 1, the anti-skip connecting component 14 can prevent the backrest 11 of the baby stroller 1 from moving towards the upright position in respect to the sitting part 12, thereby effectively preventing the backrest 11 from automatic skip. [00424] Of course, the disclosure is not limited thereto.

[00425] For example, one end of the anti-skip connecting component 14 may be connected to another part of the backrest 11 (e.g., another part of the backrest 11 other than the adjusting device 2), and/or the other end of the anti-skip connecting component 14 may be connected to another part of the baby stroller 1 located below the backrest 11 (e.g., a bracket of rear wheels of the baby stroller 1), as long as the anti-skip connecting component 14 can prevent the backrest 11 of the baby stroller 1 from moving towards the upright position in respect to the sitting part 12.

[00426] In addition, the anti-skip connecting component 14 may adopt various materials and structures. For example the anti-skip connecting component 14 may be an elastic band with elasticity or a spring, or a rigid component such as a rigid band without elasticity, or an iron bar and the like.

[00427] As shown in Fig. 87, , in order to facilitate connection of the anti-skip connecting component 14, two ends of the anti-skip connecting component 14 may be provided with hooks or hanging rings respectively. Correspondingly, the backrest 11 and the parts of the baby stroller 1 located below the backrest 11 (e.g., the food basket 15) may be provided with hanging rings or hooks.

[00428] Since the features of the present disclosure can be embodied in various forms without departing from the characteristics of the disclosure, it should also be understood, 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, and therefore, all modifications and variations that fall within the scope and bounds of the claims or equivalents of such ranges and bounds should be covered by the appended claims.

List of reference signs

1 : Baby Stroller

11: Backrest

12: Sitting Part

13: Frame

14: Anti-Skip Connecting Component

15: Food Basket

2: Adjusting Device 20: Casing

20A: Casing Through Hole

20B: Casing Middle Connecting Hole

20C: Casing Lower Connecting Hole

21 : First Outer Cover

211: Guiding Hole

22: Second Outer Cover

23 : Inner Cover

231: Fixing Post

232: Connecting Part

233: Through Hole

234: Opened Hole

235: Slot Hole

236: Casing Guide Part

237: Casing Extension

24: Reel

24 A: First Disc

24 Al, 24 A2: Reel Engaging Part

24B: Second Disc

24C: Intermediate Connecting Part

24D: Reel Driver

24D1, 24D2: Reel Driver Engaging Part

24D3 : Reel Driver Operating Part

24D4: Reel Driver Body

240: Binding Strap

241: Winding Groove

242: Accommodating Hole

243: Catching Slot

244: Ratchet wheel

244A: Limit Bbarb

244B: Ratchet Tooth Inclination Surface 245, 245': Guiding Grooves

246: Gear

247: Guide Portion

25: Clockwork Spring

251: First End

252: Second End

26: Connector

A26: Fixed Member

27: Auxiliary disc

271: Body

272: First limit Sheet

273: Second limit Sheet

274: Limit Passage

28: Elastic component

281: One End

282: The Other End

29: Slide Handle Elastic Component

A29: Connected Reel Obstructer

A291: Connected Obstructing Part

A292: Connected Bending Part

B29: Independent Reel Obstructer

B291: Independent Obstructing Part

B292: Middle Connected Protrusion

B293 : Independent Handle Part

C29: Independent Reel Obstructer

C291: Independent Obstructing Part

C292: Lower Connected Protrusion: Box

31, 31': Covering Part

32: Box Body : Baby Carrying Strap 41 : Carrying Component

411: Shoulder Strap

412: Waist Part

42: Supporting Component

100: Locking Component

101: Connecting Side

102: Free Side

103 : Clamping Portion

103 A: Limit Recess

104: Protrusion

105: Locking Component Drive Slot

106: Locking Component Drive Protrusion

106A: Locking Component inclined Surface

200, 200': Bringing Component

201: First End

202: Second End

300: Pull Handle

301 : Pull Hole

300': Push Handle

300": Slide Handle

302": Operating Component Drive Pin

303": Chute

304": Operating Component force Exertion Part

305": Slide Handle Rib

306": Operating Component Drive Pin Hole

307": Operating Component Drive Recess

307A": Operating Component inclined Surface

308": Operating Component Guide Part

308A": Elastic fin

400: Pulley

500: Fixed Base 501: Hanging Hook

5011: Penetrating Hole

502: Locating Structure

503: Opening 504: Return Spring

505: Fixed Base Rib

600: Fixing Pin

700: Guide Pin

DI: Winding Direction D2: Unwinding Direction

LI: Outer Diameter of Big-Tooth Ratchet

L2: Diameter of Dedendum Circle of Big-Tooth Ratchet H: Tooth Depth of Ratchet Tooth of Big-Tooth Ratchet 0: Ratchet Tooth Inclination Angle of Big-Tooth Ratchet

Claims

WHAT IS CLAIMED IS:

1. An unlocking mechanism for releasing a relative locating between a first member and a second member, comprising: a locking component, arranged to be able to move between a locked position and an unlocked position, wherein, in the locked position, the locking component obstructs a relative movement between the first member and the second member, and in the unlocked position, the locking component allows the relative movement between the first member and the second member; and an operating component, arranged to be able to directly or indirectly drive the locking component to move toward the unlocked position under action of an external force.

2. The unlocking mechanism according to claim 1, wherein the unlocking mechanism further comprises a bringing component, wherein a first end of the bringing component is connected to the locking component, and a second end of the bringing component is connected to the operating component, wherein the operating component is arranged to be able to bring the locking component to move toward the unlocked position via the bringing component under action of the external force.

3. The unlocking mechanism according to claim 1 or 2, wherein the operating component is arranged such that the external force exerted thereto has a function of making the first member move in respect to the second member.

4. The unlocking mechanism according to any of the preceding claims, wherein the operating component is arranged to be able to bring the locking component to move to the unlocked position under action of the external force, and able to bring the first member to move in respect to the second member under action of the external force in a same direction.

5. The unlocking mechanism according to claim 2, optionally in combination with claim 3 or 4, wherein the operating component is a pull handle being able to drive the bringing component to move by being pulled.

6. The unlocking mechanism according to claim 2, optionally in combination with any of the claims 3 to 5, wherein the operating component is a slide handle driving the bringing component to move by sliding on a fixed base, and the fixed base is arranged on the first member.

7. The unlocking mechanism according to claim 6, wherein a top of the fixed base has a flat surface extending horizontally, and the slide handle has an operating component force exertion part extending horizontally.

8. The unlocking mechanism according to claim 7, wherein the flat surface of the top of the fixed base is provided with fixed base ribs, and a lower surface of the operating component force exertion part of the slide handle is provided with slide handle ribs.

9. The unlocking mechanism according to any of the claims 6 to 8, wherein the fixed base includes a locating structure, and the locating structure is arranged to limit a sliding path of the slide handle.

10. The unlocking mechanism according to claim 9, wherein the locating structure is two locating protrusions adjacent to both sides of the slide handle.

11. The unlocking mechanism according to any of the claims 6 to 10, wherein a return spring is arranged between the fixed base and the slide handle, and the return spring is arranged to drive the slide handle to return an initial position where the bringing component has not been driven.

12. The unlocking mechanism according to any of the claims 6 to 11, wherein: the first member and the second member are relatively pivoted, and a pivoted position of the first member in respect to the second member is adjusted by an adjusting device arranged on the first member, and the unlocking mechanism serves to unlock the adjusting device, and the fixed base and a casing of the adjusting device are integrally formed.

13. The unlocking mechanism according to claim 2, optionally in combination with any of the claims 3 to 12, wherein the operating component is a push handle driving the bringing component to move by sliding along a direction parallel to a extending direction of the first member.

14. The unlocking mechanism according to claim 13, wherein the bringing component is arranged on the locking component, and the push handle is engaged with the bringing component, such that sliding of the push handle is able to bring the locking component to move toward the unlocked position.

15. The unlocking mechanism according to claim 2, optionally in combination with any of the claims 3 to 14, wherein the bringing component is a flexible member.

16. The unlocking mechanism according to claim 2, optionally in combination with any of the claims 3 to 15, wherein the bringing component passes around a guider, and the guider is arranged to guide the bringing component to bring the locking component to move toward the unlocked position, such that the operating component is able to be pulled in multiple operable directions.

17. The unlocking mechanism according to claim 2, optionally in combination with any of the claims 3 to 16, wherein the bringing component is a rigid member.

18. The unlocking mechanism according to any of the preceding claims, wherein the locking component has a clamping portion.

19. The unlocking mechanism according to any of the preceding claims, wherein movement of the locking component is a pivoting movement, a sliding movement, or a combined movement of the pivoting movement and the sliding movement.

20. The unlocking mechanism according to any of the preceding claims, wherein the first member and the second member are relatively pivoted and a pivoted position of the first member in respect to the second member is adjusted by an adjusting device, and the unlocking mechanism serves to unlock the adjusting device.

21. The unlocking mechanism according to claim 20 in combination with claim 2, wherein the unlocking mechanism further comprises a pulley arranged on the adjusting device, and the bringing component is arranged to pass around the pulley.

22. The unlocking mechanism according to claim 21, wherein the pulley is a cylindrical rotating body freely rotatable around a horizontal axis, and the bringing component extends from the locking component and out of the adjusting device after changing direction via the pulley.

23. The unlocking mechanism according to any of the preceding claims, wherein the operating component is arranged to be able to directly drive the locking component to move toward the unlocked position under action of the external force.

24. The unlocking mechanism according to any of the preceding claims, wherein: the operating component moves along a direction parallel to an extending direction of the first member, and the operating component is provided with an operating component drive part, the locking component is provided with a locking component drive part, and the operating component drive part and the locking component drive part are arranged to be able to interact with each other, such that a movement of the operating component is able to drive the locking component to move.

25. The unlocking mechanism according to any of the preceding claims, wherein the operating component is a slide handle driving the locking component to move by sliding on a fixed base, and the fixed base is arranged on the first member.

26. The unlocking mechanism according to any of the preceding claimswherein movement of the locking component is a pivoting movement.

27. The unlocking mechanism according to claim 24 in combination with claim 25, optionally further in combination with claim 26, wherein one of the locking component drive part and the operating component drive part is a locking component drive slot, and the other is an operating component drive pin passing through the locking component drive slot, wherein an extending direction of the locking component drive slot is inclined to a moving direction of the slide handle, such that a movement of the slide handle is able to drive the locking component to be pivoted.

28. The unlocking mechanism according to any of the preceding claims, wherein: the first member and the second member are relatively pivoted and a pivoted position of the first member in respect to the second member is adjusted by an adjusting device arranged on the first member, and the unlocking mechanism serves to unlock the adjusting device, and the operating component is a slide handle driving the locking component to move by sliding on a casing of the adjusting device.

29. The unlocking mechanism according to claim 28 in combination with claim 24, wherein: movement of the locking component is a pivoting movement, one of the locking component drive part and the operating component drive part is a locking component drive protrusion with a locking component inclined surface arranged thereon, and the other is an operating component drive recess with an operating component inclined surface arranged thereon, wherein the locking component inclined surface and the operating component inclined surface abut against each other, and inclined directions of the locking component inclined surface and the operating component inclined surface are inclined to a moving direction of the slide handle, such that a movement of the slide handle is able to drive the locking component to be pivoted.

30. The unlocking mechanism according to claim 28, optionally in combination with claim 29, wherein the slide handle is provided with an operating component guide part, and the casing of the adjusting device is provided with a casing guide part cooperating with the operating component guide part, so as to guide the slide handle moving on the casing.

31. The unlocking mechanism according to claim 30, wherein the operating component guide part is arranged to be two sides of the slide handle, and the casing guide part is arranged to be two locating protrusions on the casing to allow the two sides of the slide handle to slide therein.

32. The unlocking mechanism according to claim 31, wherein each of the two sides is respectively provided with an elastic fin being elastically retractable inward, and a width between outer edges of the two elastic fins is variable along the moving direction of the slide handle, each of the two locating protrusions is respectively provided with a casing guide face inclined to the moving direction of the slide handle, such that after the two sides are assembled on the two locating protrusions, an elastic pushing action between the elastic fins and the casing guide faces will drive the slide handle to move in a direction away from the locking component.

33. The unlocking mechanism according to any of the claims 28 to 32, wherein the operating component is provided with an operating component force exertion part extending in a direction perpendicular to the moving direction of the slide handle and away from the first member, and the operating component force exertion part is in a shape of a trigger.

34. The unlocking mechanism according to claim 33 in combination with claim 29, wherein the casing of the adjusting device is provided with a casing extension extending in a direction perpendicular to the moving direction of the slide handle and away from the first member, and the casing extension is arranged between the operating component force exertion part and the operating component drive recess of the operating component.

35. The unlocking mechanism according to any of the claims 28 to 34, wherein a return spring is arranged between the casing of the adjusting device and the slide handle, wherein the return spring is arranged to drive the slide handle to return an initial position where the locking component has not been driven.

36. The unlocking mechanism according to any of claims 1-35, wherein the unlocking mechanism serves to adjust a seat of a baby stroller, the first member is a backrest of the seat, and the second member is a sitting part of the seat.

37. The unlocking mechanism according to claim 36, wherein the operating component is arranged to be able to bring the locking component to move to the unlocked position under action of an external force when receiving the external force perpendicular to or inclined to the extending direction of the backrest, and the operating component is also able to bring the backrest to be pivoted in respect to the sitting part under action of the external force in the same direction.

38. The unlocking mechanism according to claim 36 or 37, wherein the unlocking mechanism is arranged at a position above middle of the backrest.

39. The unlocking mechanism according to any of claims 1-35, wherein the unlocking mechanism serves to adjust an opening and/or closing degree of a box, wherein the first member is a covering part of the box, the second member is a box body of the box, and the covering part is able to move in respect to the box body.

40. The unlocking mechanism according to claim 39, wherein movement of the covering part in respect to the box body is a pivoted opening and/or closing, a slid opening and/or closing, or a rotated opening and/or closing.

41. The unlocking mechanism according to any of claims 1-35, wherein the unlocking mechanism serves to adjust a baby carrying strap, wherein the baby carrying strap includes a carrying component capable of being worn on a user and a supporting component for bearing a baby, wherein the supporting component is connected to the carrying component so that an angle of the supporting component in respect to the carrying component is able to be adjusted, wherein the first member is the supporting component, and the second member is the carrying component.

42. An adjusting device, being provided with the unlocking mechanism according to any of claims 1-35.

43. The adjusting device according to claim 42, wherein the adjusting device further comprises: a reel, arranged to be rotatable for a binding strap to be wound thereon, and wherein both ends of the binding strap extend out of the adjusting device.

44. The adjusting device according to claim 43, wherein the reel includes a first disc and a second disc, and wherein the first disc and the second disc are connected by an intermediate connecting part, such that a winding groove is formed between the first disc and the second disc.

45. The adjusting device according to claim 43 or 44, wherein the binding strap is arranged as two binding straps, and the reel is correspondingly provided with two winding grooves.

46. The adjusting device according to claim 44, optionally in combination with claim 45, wherein the first disc is provided with two guiding grooves.

47. The adjusting device according to any of the claims 42 to 46, wherein the unlocking mechanism is a one-way unlocking mechanism only performing unlocking when a relative pivoting toward one direction between the first member and the second member is obstructed.

48. The adjusting device according to claim 43, optionally in combination with any of the claims 44 to 47, wherein the reel is provided with a one-way ratchet wheel rotating coaxially, and a clamping portion of the locking component is cooperating with ratchet teeth on the ratchet wheel, such that rotation of the ratchet wheel in an unwinding direction is able to be obstructed by the locking component, resulting in that the reel is unable to rotate in the unwinding direction.

49. The adjusting device according to claim 48, wherein the ratchet wheel on the reel is a big-tooth ratchet, wherein a ratchet tooth inclination angle of the big-tooth ratchet is 20° to 25°, and a number of the ratchet teeth is 8 to 15.

50. The adjusting device according to claim 49, wherein the ratchet tooth inclination angle of the big-tooth ratchet is 21.5°, and the number of the ratchet teeth is 12.

51. The adjusting device according to any of the claims 48 to 50, wherein an edge of a reel surface of the reel for the ratchet wheel to be disposed thereon is provided with a guide portion for guiding the locking component to return to the locked position.

52. The adjusting device according to any of the claims 42 to 51, wherein the unlocking mechanism is a two-way unlocking mechanism performing unlocking when a relative pivoting between the first member and the second member is obstructed.

53. The adjusting device according to claim 43, optionally in combination with any of the claims 44 to 52, wherein the reel is provided with a gear rotating coaxially, and a clamping portion of the locking component is cooperating with teeth on the gear, such that rotation of the gear is able to be obstructed by the locking component, resulting in that the reel is unable to rotate.

54. The adjusting device according to any of the claims 42 to 53, wherein the operating component is a slide handle formed integrally with the locking component.

55. The adjusting device according to claim 54, wherein the adjusting device comprises a slide handle elastic component, and the slide handle elastic component is arranged to drive an integrated member formed by the slide handle and the locking component to move to the locked position to obstruct rotation of the gear.

56. The adjusting device according to claim 43, optionally in combination with any of the claims 44 to 55, wherein the reel is provided with a barbed ratchet rotating coaxially, wherein each ratchet tooth of the barbed ratchet is provided with a limit barb, and the clamping portion of the locking component is provided with limit recesses cooperating with the limit barbs, such that rotation of the barbed ratchet in two directions is able to be obstructed by the locking component.

57. The adjusting device according to claim 43, optionally in combination with any of the claims 44 to 56, wherein the adjusting device further comprises: a clockwork spring, located in an accommodating hole within the reel and arranged to drive the reel to rotate in a winding direction opposite to the unwinding direction, and wherein the clockwork spring is wound tightly when the reel rotates in the unwinding direction.

58. The adjusting device according to claim 57, wherein an auxiliary disc is arranged on an outer side of the accommodating hole of the reel, and the auxiliary disc is arranged to obstruct the clockwork spring.

59. The adjusting device according to claim 58, wherein the auxiliary disc includes a body, and a first limit sheet and a second limit sheet extending outwardly from an outer circumference of the body, and wherein the first limit sheet and the second limit sheet are spaced apart axially, so as to form a limit passage for the binding strap to pass through.

60. The adjusting device according to claim 59, wherein the first limit sheet and the second limit sheet are only arranged at an outer circumference of a half of the auxiliary disc.

61. The adjusting device according to claim 59 or 60, wherein the first limit sheet and the second limit sheet are staggered circumferentially.

62. The adjusting device according to claim 43, optionally in combination with any of the claims 44 to 61, wherein the binding strap is arranged as a member having elasticity itself.

63. The adjusting device according to claim 43, optionally in combination with any of the claims 44 to 62, wherein the adjusting device further comprises: a second outer cover and an inner cover, wherein the reel is arranged between the inner cover and the second outer cover, and both ends of the binding strap extend out of the inner cover.

64. The adjusting device according to claim 63, wherein the inner cover is provided with a through hole at a position corresponding to the locking component, wherein the locking component is arranged in the through hole.

65. The adjusting device according to claim 63 or 64, wherein the adjusting device further comprises: a first outer cover, located outside the inner cover.

66. The adjusting device according to claim 65, wherein the first outer cover is provided with a guiding hole for the bringing component to pass therethrough.

67. The adjusting device according to any of the claims 42 to 66, wherein the adjusting device further comprises an elastic component, and wherein the elastic component is arranged to drive the locking component to move toward the locked position.

68. The adjusting device according to claim 43, optionally in combination with any of the claims 44 to 67, wherein: the adjusting device includes a casing, wherein the reel is located in the casing and is provided with a ratchet wheel or gear rotating coaxially, and the clamping portion of the locking component is able to obstruct the ratchet wheel or the gear from rotating; the casing is provided with a casing through hole penetrating therethrough, such that a reel obstructer is able to pass through the casing through hole from an outside of the adjusting device to obstruct the ratchet wheel or the gear from rotating.

69. The adjusting device according to claim 68, wherein the reel obstructer is a connected reel obstructer formed integrally with the casing, and the connected reel obstructer includes: a connected obstructing part, being able to passe through the casing through hole to be engaged with ratchet teeth of the ratchet wheel or teeth of the gear, a connected bending part, wherein the connected reel obstructer is formed integrally with the casing via the connected bending part, and the connected bending part is arranged such that the connected obstructing part is able to move between an engaged position where the connected obstructing part is engaged with the ratchet teeth of the ratchet wheel or the teeth of the gear, and a disengaged position where the connected obstructing part is disengaged from the ratchet teeth of the ratchet wheel or the teeth of the gear.

70. The adjusting device according to claim 69, wherein the connected reel obstructer is arranged to be capable of being separated from the casing by cutting off the connected bending part.

71. The adjusting device according to any of the claims 68 to 70, wherein the reel obstructer is an independent reel obstructer independent from the casing, and the independent reel obstructer includes an independent obstructing part being able to be engaged with the ratchet teeth of the ratchet wheel or the teeth of the gear.

72. The adjusting device according to claim 71, wherein: the casing includes a casing middle connecting hole above the casing through hole, and the independent reel obstructer includes a middle connected protrusion being able to be connected to the casing middle connecting hole.

73. The adjusting device according to claim 71, wherein: the casing includes a casing lower connecting hole below the casing through hole, and the independent reel obstructer includes a lower connected protrusion being able to be connected to the casing lower connecting hole.

74. An adjusting device, being provided with the unlocking mechanism according to claim 2, optionally in combination with any of the claims 3 to 41, wherein the operating component is a push handle driving the bringing component to move by sliding along a direction parallel to the extending direction of the first member, and the bringing component is a rigid member, wherein the bringing component is arranged on the locking component, and the push handle is engaged with the bringing component, such that sliding of the push handle is able to bring the locking component to move toward the unlocked position.

75. A reel driver, being arranged to be able to drive the reel in the adjusting device according to any of claims 43-73 to rotate.

76. The reel driver according to claim 75, wherein the reel driver comprises: a reel driver body; reel driver engaging parts, being arranged on the reel driver body, and being able to be engaged with reel engaging parts arranged on the reel.

77. The reel driver according to claim 76, wherein one of the reel driver engaging parts and the reel engaging parts is engaging bulges, and the other is engaging concaves.

78. The reel driver according to claim 76 or 77, wherein the reel driver body has a cylindrical shape, and is arranged to be able to be accommodated in an accommodating hole within the reel.

79. The reel driver according to any of the claims 76 to 78, wherein there are two reel driver engaging parts, and the two reel driver engaging part are respectively arranged at two extending parts extending radially outward from the reel driver body, so as to be respectively engaged with two reel engaging parts arranged on the reel.

80. The reel driver according to claim 79, wherein the two reel driver engaging parts are arranged symmetrically in respect to a rotation center of the reel.

81. The reel driver according to any of the claims 75 to 80, wherein the reel driver comprises a reel driver operating part, and the reel driver operating part is arranged to be able to drive the reel driver to rotate under action of the external force.

82. The reel driver according to claim 81, wherein the reel driver operating part is a rocker arranged on one of the extending parts extending radially outward from the reel driver body.

83. A baby stroller with a seat, being assembled with the adjusting device according to any of claims 42-74 and the unlocking mechanism according to any of claims 1-38, wherein the unlocking mechanism serves to unlock the adjusting device, the first member is a backrest of the seat, and the second member is a sitting part of the seat.

84. The baby stroller according to claim 83, wherein positions to which the backrest is able to be rotated in respect to the sitting part include a contact position, an upright position, a lying position, and another suitable position between any two of the three positions.

85. The baby stroller according to claim 83 or 84, wherein the backrest of the seat is connected to a part of the baby stroller located below the backrest through an anti-skip connecting component.

86. The baby stroller according to claim 85, wherein one end of the anti-skip connecting component is connected to the operating component disposed on the backrest, and the other end of the anti-skip connecting component is connected to a food basket of the baby stroller.

87. The baby stroller according to claim 85 or 86, wherein the anti-skip connecting component is an elastic band with elasticity.

88. A box, being provided with the unlocking mechanism according to claim 39 or 40.

89. The box according to claim 88, wherein the box is assembled with the adjusting device according to any of claims 42-74, and the adjusting device serves to adjust a position of the covering part in respect to the box body.

90. The box according to claim 88 or 89, wherein the box is assembled with a latch mechanism, wherein the latch mechanism includes a locating component cooperating with the locking component of the unlocking mechanism, and wherein by operating the unlocking mechanism to make the locking component be engaged or disengaged in respect to the locating component, the latch mechanism is locked and unlocked, such that the covering part is able to move in respect to the box body.

91. A baby carrying strap, being assembled with the adjusting device according to any of claims 42-74 and the unlocking mechanism according to claim 41, wherein the adjusting device is mounted inside the supporting component, the binding strap of the adjusting device is connected to the carrying component, and the adjusting device serves to adjust an angle of the supporting component in respect to the carrying component.