Mounting connection structure and child carrier

Abstract

The present application relates to a mounting connection structure and a child carrier. The mounting connection structure comprises a mounting connection assembly. The mounting connection assembly comprises: a connection base, at least one swivel arm, and a locking element. The at least one swivel arm is pivotably connected to the connection base. The locking element is movably arranged on the connection base to restrict or allow the rotation of the at least one swivel arm relative to the connection base.

Description

Reference to related applications

[0001] This application claims priority over Chinese patent application No. 2023115616284, filed on November 21, 2023, and Chinese patent application No. 2023110488754, filed on August 18, 2023, the contents of which are hereby incorporated in their entirety by reference. Technical area

[0002] The present application relates to the field of child carrying technologies, and in particular to a mounting connection structure and a child carrier with the mounting connection structure. background

[0003] Children's beds are practical aids for supporting babies and toddlers. To meet customer demands for foldability and easy storage, children's beds with folding armrests have been developed. These foldable children's beds are advantageously easy to disassemble, fold, and store. However, the structures and folding mechanisms of existing children's beds are relatively complex, which increases manufacturing costs and requires considerable time and effort for disassembly and folding. Summary

[0004] According to various embodiments of the present application, the present application provides a mounting connection assembly, a mounting connection structure and a child carrier.

[0005] According to one aspect of the present application, a mounting connection structure is provided. The mounting connection structure comprises a mounting connection assembly. The mounting connection assembly comprises: a connection base, at least one pivot arm, and a locking element. The at least one pivot arm is pivotably connected to the connection base. The locking element is movably arranged on the connection base to restrict or allow the rotation of the at least one pivot arm relative to the connection base.

[0006] In one embodiment, the mounting connection assembly comprises a movable connection assembly. The movable connection assembly comprises: a pivot base, at least one set of pivot arms, and at least one movable locking element. The pivot base serves as the connection base. The at least one set of pivot arms serves as at least one pivot arm. Each set of pivot arms comprises a first pivot arm and a second pivot arm, which are pivotably connected to the same side of the pivot base. The first pivot arm and the second pivot arm are spaced apart from each other. The at least one movable locking element is movably arranged on the pivot base and can be switched between a motion-unlocked position and a motion-locked position.When the movable locking element is in the motion-locked position, the movable locking element simultaneously stops the first pivot arm and the second pivot arm to limit the rotation of the first pivot arm and the rotation of the second pivot arm; and when the movable locking element is in the motion-unlocked position, the first pivot arm and the second pivot arm are rotatable relative to the pivot base.

[0007] In one embodiment, the movable locking element comprises a first surface and a second surface opposite each other. When the movable locking element is in the movement-locked position, the first pivot arm is stopped by the first surface and the second pivot arm by the second surface; and when the movable locking element is in the movement-unlocked position, the first pivot arm is displaced relative to the first surface and the second pivot arm is displaced relative to the second surface.

[0008] In one embodiment, one element from the group consisting of a movable locking element and a pivot base is designed with a sliding groove, and another element from the group consisting of a movable locking element and a pivot base is designed with a connecting projection or a connecting pin. The connecting projection or the connecting pin is in a push-fit position with the sliding groove and can be moved along the sliding groove.

[0009] In one embodiment, the movable locking element is designed with a guide surface which is designed to guide at least one element from the group of the first pivot arm and the second pivot arm into pivoting.

[0010] In one embodiment, two sets of pivot arms are provided. The two sets of pivot arms are each arranged on opposite sides of the pivot base. Two movable locking elements are provided. The two movable locking elements interact with the two sets of pivot arms to restrict or allow the rotation of the two sets of pivot arms relative to the pivot base.

[0011] In one embodiment, the movable connecting assembly further comprises a movable return element arranged between the two movable locking elements. The movable return element is designed to bias the two movable locking elements to cause them to tend to move toward the locked position.

[0012] In one embodiment, at least one of the two movable locking elements is designed with a receiving groove which is designed to at least partially receive the movable return element.

[0013] In one embodiment, the movable connecting assembly further comprises a connecting element. The connecting element is movably arranged on the pivot base. The connecting element or the movable locking element is formed with a drive groove, the direction of extension of the drive groove being at an angle to the direction of movement of the movable locking element and at an angle to the direction of movement of the connecting element. The other element of the group consisting of a connecting element or movable locking element is formed with a drive element. The drive element is slidably fitted into the drive groove to drive the movable locking element to convert between the locked position and the unlocked position.

[0014] In one embodiment, a connecting element is provided, and two movable locking elements are provided. The two movable locking elements are drive-connected to the connecting element. The connecting element is designed with a clearance groove. The connecting element is further designed with a spacer section. The spacer section divides the clearance groove into a first clearance groove and a second clearance groove. When the two movable locking elements are in the unlocked position, the first clearance groove receives at least partially one of the two movable locking elements, and the second clearance groove receives at least partially the other of the two movable locking elements.

[0015] In one embodiment, the mounting connection structure comprises two movable connection assemblies. The movable locking element of one of the two movable connection assemblies is connected via a coupling element to the movable locking element of the other of the two movable connection assemblies, such that when one of the two movable connection assemblies is operated, the other of the two movable connection assemblies is driven to convert between a locked state and an unlocked state.

[0016] In one embodiment, each of the movable connecting assemblies comprises two movable locking elements positioned opposite each other. The two movable locking elements comprise a first movable locking element and a second movable locking element. The two movable connecting assemblies comprise a first movable assembly and a second movable assembly. The second movable assembly comprises the first movable locking element, which is located relatively close to the first movable assembly, and the second movable locking element, which is located relatively far from the first movable assembly. The first movable assembly comprises the first movable locking element, which is located relatively far from the second movable assembly, and the second movable locking element, which is located relatively close to the second movable assembly.One end of the coupling element is connected to the second movable locking element of the first movable assembly, and another end of the coupling element is connected to the second movable locking element of the second movable assembly.

[0017] In one embodiment, the coupling element comprises a pull cable and a first locking end and a second locking end, each arranged at two ends of the pull cable. Each of the movable locking elements has an engagement hole designed to allow the passage of the pull cable. The first locking end and the second locking end each engage with their respective engagement holes.

[0018] In one embodiment, each of the movable connecting assemblies comprises two movable locking elements. The two movable locking elements comprise a first movable locking element and a second movable locking element. The two movable connecting assemblies comprise a first movable assembly and a second movable assembly. The first locking end engages with the engagement hole of the second movable locking element of the first movable assembly, and the second locking end engages with the engagement hole of the second movable locking element of the second movable assembly.

[0019] In one embodiment, each engagement hole is formed with an abutment section. The first closure end and the second closure end are each designed to abut the abutment sections in the corresponding engagement hole.

[0020] In one embodiment, the movable locking element of one of the two movable connecting assemblies is further formed with a mounting through-hole through which the first locking end extends, while the movable locking element of the other of the two movable connecting assemblies is further formed with a mounting through-hole through which the second locking end extends. Each mounting through-hole is connected to the respective engagement hole so that the pull cable can move between the mounting through-hole and the engagement hole.

[0021] In one embodiment, the coupling element further comprises a sleeve that is attached outside the pull cable. One end of the sleeve is provided with a first connecting end designed to allow the passage of the pull cable, and another end of the sleeve is provided with a second connecting end designed to allow the passage of the pull cable. The two movable connecting assemblies comprise a first movable assembly and a second movable assembly. The first connecting end is restricted by the pivot base of the first movable assembly, and the second connecting end is restricted by the pivot base of the second movable assembly.

[0022] In one embodiment, the two movable connecting assemblies comprise a first movable assembly and a second movable assembly. The connecting element of the first movable assembly is designed with an operable operating section.

[0023] In one embodiment, the mounting connection assembly further comprises a rotary connection assembly and a coupling element. The rotary connection assembly comprises: a rotary base, at least one first rotary arm, and at least one rotary locking element. The rotary base serves as the connection base. The at least one first rotary arm serves as the pivot arm. The at least one first rotary arm is pivotably connected to the rotary base. The at least one rotary locking element is rotatably arranged on the rotary base and can be switched between a rotationally unlocked position and a rotationally locked position.When the rotary locking element is in the rotationally unlocked position, the first rotary arm is rotatable relative to the rotation base; and when the rotary locking element is in the rotationally locked position, the first rotary arm's rotation relative to the rotation base is restricted. The movable connecting assembly is capable of driving the rotary connecting assembly, via the coupling element, to convert from a locked state to an unlocked state; or the rotary connecting assembly is capable of driving the movable connecting assembly, via the coupling element, to convert from a locked state to an unlocked state.

[0024] In one embodiment, one element of the group consisting of a first rotating arm and a rotating locking element is formed with an engagement recess, and another element of the group consisting of a first rotating arm and a rotating locking element is formed with an engagement projection. When the rotating locking element is in the rotationally locked position, the engagement projection engages in the engagement recess, and when the rotating locking element is in the rotationally unlocked position, the engagement projection is released from the engagement recess.

[0025] In one embodiment, an engagement projection is formed at one end of the first rotating arm, and the rotating locking element is designed with an engagement recess facing the first rotating arm.

[0026] In one embodiment, two first rotating arms are provided. The opposing ends of the two first rotating arms are pivotably connected to the rotating base. Two rotating locking elements are provided. The two rotating locking elements can be engaged with the respective first rotating arms. The two rotating locking elements interlock so that they can synchronously switch between the rotationally locked and the rotationally unlocked positions.

[0027] In one embodiment, the rotary connection assembly further comprises a rotational return element. The rotational return element biases the rotational locking element to cause the rotational locking element to tend to rotate in the direction of the rotationally locked position.

[0028] In one embodiment, one end of the coupling element is connected to the movable locking element of the movable connecting assembly, and another end of the coupling element is connected to the rotary locking element. When the movable locking element moves from the movable locking position to the movable unlocking position, the coupling element drives the rotary locking element to convert from the rotary locked position to the rotary unlocked position.

[0029] In one embodiment, the rotary connection assembly comprises two interlocking rotary locking elements. The two rotary locking elements comprise a first rotary locking element located relatively close to the movable connection assembly and a second rotary locking element located relatively far from the movable connection assembly. The movable connection assembly comprises two movable locking elements. The two movable locking elements comprise a first movable locking element located relatively far from the rotary connection assembly and a second movable locking element located relatively close to the rotary connection assembly. One end of the coupling element is connected to the first rotary locking element, and another end of the coupling element is connected to the second movable locking element.

[0030] In one embodiment, the coupling element comprises a pull cable and a first locking end and a second locking end, which are connected to two ends of the pull cable. The second movable locking element is formed with an engagement hole, and the first rotary locking element is formed with an engagement groove. The first locking end engages with the engagement hole of the second movable locking element, and the second locking end engages with the engagement groove of the first rotary locking element.

[0031] In one embodiment, the engagement groove comprises a first groove section designed to engage with the second closure end and a second groove section designed to allow the pull cable to pass through. The first groove section is connected to the second groove section. One direction of extension of the first groove section is at an angle to one direction of extension of the second groove section.

[0032] In one embodiment, the coupling element further comprises a sheath that is attached outside the pull rope. One end of the sheath is formed with a first connecting end designed to allow the pull rope to pass through, and another end of the sheath is formed with a second connecting end designed to allow the pull rope to pass through. The first connecting end is limited by the rotation base, and the second connecting end is limited by the pivot base.

[0033] In one embodiment, the rotation base is provided with a connecting frame. The first connecting end is attached to the connecting frame. The pivot base is provided with a fixed frame, and the second connecting end is attached to the fixed frame.

[0034] In one embodiment, the mounting connection assembly comprises a rotary connection assembly. The rotary connection assembly comprises: a rotary base, at least one first rotary arm, and at least one rotary locking element. The rotary base serves as the connection base. The at least one first rotary arm serves as the pivot arm. The at least one first rotary arm is pivotably connected to the rotary base. The at least one rotary locking element is rotatably mounted on the rotary base and can be switched between a rotationally unlocked position and a rotationally locked position. When the rotary locking element is in the rotationally unlocked position, the first rotary arm is rotatable relative to the rotary base, and when the rotary locking element is in the rotationally locked position, the rotation of the first rotary arm relative to the rotary base is restricted.

[0035] In one embodiment, one element of the group consisting of a first rotating arm and a rotating locking element is formed with an engagement recess, and another element of the group consisting of a first rotating arm and a rotating locking element is formed with an engagement projection. When the rotating locking element is in the rotationally locked position, the engagement projection engages in the engagement recess, and when the rotating locking element is in the rotationally unlocked position, the engagement projection is released from the engagement recess.

[0036] In one embodiment, an engagement projection is formed at one end of the first rotating arm, and the rotating locking element is designed with an engagement recess facing the first rotating arm.

[0037] In one embodiment, the rotary connection assembly is provided with two first rotary arms. The ends of the two first rotary arms facing each other are pivotably connected to the rotary base.

[0038] In one embodiment, two rotary locking elements are provided. The two rotary locking elements can be engaged with the respective first rotary arms. The two rotary locking elements interlock so that they can synchronously switch between the rotationally locked locking position and the rotationally unlocked unlocking position.

[0039] In one embodiment, the rotary connection assembly further comprises a rotational return element. The rotational return element biases the rotational locking element to cause the rotational locking element to tend to rotate in the direction of the rotationally locked position.

[0040] In one embodiment, the rotary connection assembly further comprises at least one second rotary arm. The at least one second rotary arm is pivotably connected to the rotary base.

[0041] In one embodiment, the rotary connection assembly further comprises an operating element. The rotation base of the rotary connection assembly has a receiving groove, wherein the rotary locking element is at least partially received in the receiving groove. One side wall of the receiving groove is formed with a through-hole. The operating element is connected to the rotary locking element via the through-hole in order to drive the rotary locking element to convert between the rotationally locked position and the rotationally unlocked position.

[0042] In one embodiment, the rotational locking element is designed with a pivot projection. The pivot projection has a concave section. The operating element has a pivot recess designed to receive the pivot projection. The pivot recess has a convex section designed to engage with the concave section.

[0043] In one embodiment, two rotary connection assemblies are provided. The two rotary connection assemblies are driven together via a coupling element. When one of the rotary connection assemblies is actuated, the other rotary connection assemblies are driven by the coupling element to switch between a locked and an unlocked state.

[0044] In one embodiment, each of the rotary connection assemblies comprises two rotary locking elements. The two rotary locking elements comprise a first rotary locking element and a second rotary locking element. The two rotary connection assemblies comprise a first rotary assembly and a second rotary assembly. The second rotary assembly comprises the first rotary locking element, which is arranged relatively close to the first rotary assembly, and the second rotary locking element, which is arranged relatively far away from the first rotary assembly. The first rotary assembly comprises the first rotary locking element, which is arranged relatively far away from the second rotary assembly, and the second rotary locking element, which is arranged relatively close to the second rotary assembly.One end of the coupling element is connected to the first rotational locking element of the first rotating assembly, and another end of the coupling element is connected to the first rotational locking element of the second rotating assembly.

[0045] In one embodiment, each of the rotary connection assemblies comprises two rotary locking elements. The two rotary locking elements comprise a first rotary locking element and a second rotary locking element. At least the first rotary locking element is designed with an engagement groove. The two rotary connection assemblies comprise a first rotary assembly and a second rotary assembly. The coupling element comprises a pull cable and a first locking end and a second locking end, each arranged at two ends of the pull cable. The first locking end engages with the engagement groove of the first rotary locking element of the first rotary assembly, and the second locking end engages with the engagement groove of the first rotary locking element of the second rotary assembly.

[0046] In one embodiment, the engagement groove comprises a first groove section and a second groove section, which are designed to allow the passage of the pull rope. The first groove section is connected to the second groove section. The direction of extension of the first groove section is at an angle to the direction of extension of the second groove section. The first locking end or the second locking end is designed to engage with the first groove section.

[0047] In one embodiment, the second rotational locking element of the first rotational assembly is designed with a retaining groove, wherein both ends of the retaining groove are open ends to allow the passage of the pull rope.

[0048] In one embodiment, the coupling element further comprises a sheath that is attached outside the pull cable. One end of the sheath is formed with a first connecting end designed to allow the pull cable to pass through and which can abut the first locking end, and another end of the sheath is formed with a second connecting end designed to allow the pull cable to pass through and which can abut the second locking end. The first connecting end is limited by the base of rotation of the first rotating assembly, and the second connecting end is limited by the base of rotation of the second rotating assembly.

[0049] In one embodiment, the two rotation bases are each provided with a connecting frame, and the first connecting end and the second connecting end are each restricted by the corresponding connecting frames.

[0050] In one embodiment, the two rotary connection assemblies comprise a first rotary assembly and a second rotary assembly. The first rotary assembly further comprises an operating element which is drive-connected to the rotary locking element. The operating element is configured to drive the rotary locking element of the first rotary assembly to rotate, causing the rotary locking element of the first rotary assembly to change between the rotationally locked position and the rotationally unlocked position.

[0051] In one embodiment, the base of rotation of the first rotating assembly has a receiving groove. The rotating locking element of the first rotating assembly is at least partially received in the receiving groove. One side wall of the receiving groove has a through-hole, and the operating element is connected to the rotating locking element via this through-hole.

[0052] In one embodiment, the rotational locking element of the first rotating assembly is designed with a pivot projection. The pivot projection has a concave section. The operating element has a pivot recess designed to receive the pivot projection. The pivot recess has a convex section designed to engage with the concave section.

[0053] In one embodiment, the rotary locking element comprises a first rotary locking element and a second rotary locking element. The operating element is drive-connected to the first rotary locking element of the first rotary assembly.

[0054] In one embodiment, the mounting connection structure is formed with a plurality of mounting connection assemblies, and the mounting connection structure further comprises: a corner connection element, a support leg, and a plurality of connecting rods. The plurality of mounting connection assemblies are connected to the corner connection element. The support leg is connected to the corner connection element, and the support leg is provided with a sliding structure. The sliding structure comprises a sliding element that is slidably arranged on the support leg. The at least one pivot arm of each of the mounting connection assemblies is connected to the sliding structure via the corresponding connecting rod, such that when the at least one pivot arm of one of the mounting connection assemblies rotates, the at least one pivot arm of another of the mounting connection assemblies is driven to rotate via the connecting rod and the sliding structure.

[0055] In one embodiment, the first rotating arm comprises a body rod and an engagement rod. The engagement rod is connected to an end of the body rod adjacent to the rotating locking element and is movable relative to the body rod between an extended position and a retracted position. The first rotating arm has an unfolded position and a folded position. During the conversion of the first rotating arm from the folded position to the unfolded position, the rotating locking element presses against the engagement rod, causing the engagement rod to move from the extended position to the retracted position.

[0056] In one embodiment, the rotary locking element is designed with an engagement recess, and an end of the engagement rod, which is furthest from the body rod, serves as an engagement projection. When the first rotary arm is in the folded position, the engagement projection is separated from the engagement recess and the engagement rod is in the extended position; and when the first rotary arm moves from the folded position to the unfolded position, the engagement projection faces the engagement recess, and the engagement rod moves from the retracted position to the extended position, so that the engagement projection engages with the engagement recess.

[0057] In one embodiment, one element of the group consisting of body rod and engagement rod is designed with an insertion cavity, and the other element from the group consisting of body rod and engagement rod is inserted into the insertion cavity and at least partially confined therein.

[0058] In one embodiment, the body rod is designed with an insertion cavity and pivotably connected to the rotation base via a pin shaft. The engagement rod is inserted into the insertion cavity and is designed with a guide groove, the expansion direction of which runs parallel to an expansion direction of the insertion cavity. The pin shaft extends through the guide groove and prevents the engagement rod from detaching from the body rod.

[0059] In one embodiment, an end of the engagement rod located away from the engagement projection is formed with a first insertion end and a second insertion end. The first insertion end and the second insertion end enclose an insertion opening that communicates with the guide groove. At least one element of the group consisting of the first insertion end and the second insertion end is formed with a limiting projection. The engagement rod allows the pin shaft to extend through the insertion opening into the guide groove and prevents the guide groove from disengaging from the pin shaft by the limiting projection abutting the pin shaft.

[0060] In one embodiment, the first rotating arm is further equipped with a telescopic return element. One end of the telescopic return element abuts the pin shaft, and another end of the telescopic return element abuts the engagement rod. The telescopic return element pre-tensions the engagement rod so that it moves towards the extended position.

[0061] In one embodiment, the engagement rod is designed with a receiving cavity, and the telescopic return element is received in the receiving cavity and abuts the lower wall of the receiving cavity.

[0062] In one embodiment, the at least one pivot arm comprises a first pivot arm. The first pivot arm is pivotably connected to the connecting base via a pin shaft and can be switched between an open position and a folded position. The mounting connection assembly is further equipped with an auxiliary return element. One end of the auxiliary return element is connected to the connecting base, and another end of the auxiliary return element abuts the first pivot arm. The auxiliary return element biases the first pivot arm so that it rotates in the direction of the open position.

[0063] In one embodiment, the auxiliary return element comprises two spring body sections, two first end sections, and a second end section connected to the two spring body sections. The first pivot arm is pivotably connected to the connecting base via the pin shaft. The two spring body sections are mounted on the pin shaft and are located on opposite sides of the first pivot arm. The two first end sections abut the connecting base, and the second end section abuts the first pivot arm and is located between the first pivot arm and a second pivot arm.

[0064] According to another aspect of the present application, a mounting connection assembly is provided. The mounting connection assembly comprises: a pivot base, at least one set of pivot arms, and at least one movable locking element. Each set of pivot arms comprises a first pivot arm and a second pivot arm, which are pivotably connected to the same side of the pivot base. The first pivot arm and the second pivot arm are spaced apart from each other. The at least one movable locking element is arranged on the pivot base and can be converted between a motion-unlocked position and a motion-locked position.When the movable locking element is in the motion-locked position, the movable locking element simultaneously stops the first pivot arm and the second pivot arm to limit the rotation of the first pivot arm and the rotation of the second pivot arm; and when the movable locking element is in the motion-unlocked position, the first pivot arm and the second pivot arm are rotatable relative to the pivot base.

[0065] According to another aspect of the present application, a mounting connection assembly is provided. The mounting connection assembly comprises a rotating base, at least one first rotating arm, and at least one rotating locking element. The at least one first rotating arm is pivotably connected to the rotating base. The at least one rotating locking element is rotatably arranged on the rotating base and can be switched between a rotationally unlocked position and a rotationally locked position. When the rotating locking element is in the rotationally unlocked position, the first rotating arm is rotatable relative to the rotating base, and when the rotating locking element is in the rotationally locked position, the rotation of the first rotating arm relative to the rotating base is restricted.

[0066] According to yet another aspect of the present application, a child carrier is provided. The child carrier comprises the mounting connection structure in one of the aforementioned embodiments.

[0067] According to another aspect of the present application, a child carrier is provided. The child carrier comprises the mounting connection assembly in one of the embodiments mentioned above. Brief description of the characters Fig. Figure 1 is a cross-sectional view of a mounting connection assembly of a mounting connection structure according to a first embodiment of the present application. Fig. Figure 2 is an exploded view of the mounting connection assembly of the mounting connection structure according to the first embodiment of the present application. Fig. Figure 3 is a schematic view of a movable locking element of the mounting connection structure according to the first embodiment of the present application. Fig. Figure 4 is a schematic view of a bed frame of a child carrier according to the first embodiment of the present application, wherein the child carrier is in an unfolded state. Fig. Figure 5 is another schematic view of the bed frame of the child carrier according to the first embodiment of the present application, wherein the child carrier is in a semi-folded state. Fig. Figure 6 is another schematic view of the bed frame of the child carrier according to the first embodiment of the present application, wherein the child carrier is in a folded state. Fig. Figure 7 is a cross-sectional view of a mounting connection structure according to a second embodiment of the present application, wherein two movable connection assemblies of the mounting connection structure are in a locking state. Fig. Figure 8 is another cross-sectional view of the mounting connection structure according to the second embodiment of the present application, wherein the two movable connecting assemblies of the mounting connection structure are in the unlocked state and the pivot arms are in an unfolded state. Fig. Figure 9 is another cross-sectional view of the mounting connection structure according to the second embodiment of the present application, wherein the two movable connecting assemblies of the mounting connection structure are in the unlocked state and the pivot arms are in a folded state. Fig. Figure 10 is a cross-sectional view of a connecting element of a first movable connecting assembly according to the second embodiment of the present application. Fig. Figure 11 is a cross-sectional view of a connecting element of a second movable connecting assembly according to the second embodiment of the present application. Fig. Figure 12 is a schematic view of a movable locking element according to the second embodiment of the present application. Fig. Figure 13 is a schematic view of the movable locking element according to the second embodiment of the present application from a different perspective. Fig. Figure 14 is a schematic view of a coupling element according to the second embodiment of the present application. Fig. Figure 15 is a schematic view of a bed frame of a child carrier according to the second embodiment of the present application. Fig. Figure 16 is a schematic view of a mounting connection assembly of a mounting connection structure according to a third embodiment of the present application. Fig. Figure 17 is a cross-sectional view of the mounting connection assembly of the mounting connection structure according to the third embodiment of the present application, wherein a rotation connection assembly is in the locking state. Fig. Figure 18 is a further cross-sectional view of the mounting connection assembly of the mounting connection structure according to the third embodiment of the present application, wherein the rotation connection assembly is in the unlocked state and a first rotation arm and a second rotation arm are in an unfolded state. Fig. Figure 19 is a further cross-sectional view of the mounting connection assembly of the mounting connection structure according to the third embodiment of the present application, wherein a rotation locking element is in a rotationally unlocked position and the first rotation arm and the second rotation arm are in a folded state. Fig. Figure 20 is a schematic view of the mounting connection assembly of the mounting connection structure according to the third embodiment of the present application, wherein one operating element is omitted. Fig. Figure 21 is a schematic view of the control element of the mounting connection assembly according to the third embodiment of the present application. Fig. Figure 22 is a schematic view of a bed frame of a child carrier according to the third embodiment of the present application. Fig. Figure 23 is a cross-sectional view of a support connection structure according to a fourth embodiment of the present application. Fig. Figure 24 is a schematic view of a first rotational assembly of the mounting connection structure according to the fourth embodiment of the present application, wherein a first rotational assembly in the locking state and a side wall of a rotational base are omitted. Fig. Figure 25 is a further schematic view of the first rotational assembly of the mounting connection structure according to the fourth embodiment of the present application, wherein the first rotational assembly is in the unlocked state and one side wall of the rotational base is omitted. Fig. Figure 26 is a schematic view of the first rotary assembly according to the fourth embodiment of the present application, wherein one control element is omitted. Fig. Figure 27 is a cross-sectional view of a second rotational assembly of the mounting connection structure according to the fourth embodiment of the present application. Fig. Figure 28 is a cross-sectional view of the second rotating assembly of the mounting connection structure according to the fourth embodiment of the present application from a different perspective, wherein the second rotating assembly is in the unlocked state. Fig. Figure 29 is a schematic view of a coupling element of the support connection structure according to the fourth embodiment of the present application. Fig. Figure 30 is a schematic view of a rotational locking element of the mounting connection structure according to the fourth embodiment of the present application. Fig. Figure 31 is a schematic view of a bed frame of a child carrier according to the fourth embodiment of the present application. Fig. Figure 32 is a schematic view of a rotary connection assembly of a support connection structure according to the fifth embodiment of the present application, wherein the rotary connection assembly is in the locking state. Fig. Figure 33 is a further schematic view of a movable connecting assembly of the mounting connecting structure according to the fifth embodiment of the present application, wherein the movable connecting assembly is in the unlocked state. Fig. Figure 34 is a cross-sectional view of the rotary connection assembly of the support connection structure according to the fifth embodiment of the present application, wherein the rotary connection assembly is in the unlocked state and a first rotary arm and a second rotary arm are in an unfolded state. Fig. Figure 35 is a cross-sectional view of the movable connecting assembly of the support connecting structure according to the fifth embodiment of the present application, wherein the movable connecting assembly is in the unlocked state and a first pivot arm and a second pivot arm are in an unfolded state. Fig. Figure 36 is another cross-sectional view of the rotary connection assembly of the support connection structure according to the fifth embodiment of the present application, wherein the rotary connection assembly is in the locking state and the first rotary arm and the second rotary arm are in a folded state. Fig. Figure 37 is a further sectional view of the movable connecting assembly of the support connecting structure according to the fifth embodiment of the present application, wherein the movable connecting assembly is in the unlocked state and the first pivot arm and the second pivot arm are in the folded state. Fig. Figure 38 is a schematic view of a coupling element of the support connection structure according to the fifth embodiment of the present application. Fig. Figure 39 is a schematic view of a movable locking element according to the fifth embodiment of the present application. Fig. Figure 40 is a schematic view of a bed frame of a child carrier according to the fifth embodiment of the present application. Fig. Figure 41 is a schematic representation of a bed frame of a child carrier according to a seventh embodiment of the present application. Fig. Figure 42 is a schematic representation of a mounting connection assembly according to the seventh embodiment of the present application. Fig. 43 is a schematic view of the in Fig. 42 shown bracket connection assembly of the child carrier, with one body bar omitted. Fig. Figure 44 is a cross-sectional view of the mounting connection assembly of the child carrier along a line U1-U1 in Fig. 41. Fig. 45 is a schematic representation of an engagement rod of the in Fig. 43 shown bracket connection assembly. Fig. 46 is a schematic representation of an auxiliary return element of the in Fig. 41 child carriers shown. Detailed description

[0068] To clarify and make more understandable the aforementioned objectives, features, and advantages of the present application, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. Many specific details are set forth below to provide a complete understanding of the present application. However, the present application can be implemented in many other ways that differ from those described here, and those skilled in the art can make similar improvements without altering the meaning of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0069] In the description of the present application, it should be noted that the terms “central”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “top”, “bottom”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like are based on the orientation or position relationships shown in the accompanying drawings and serve only to facilitate and simplify the description of the present application, rather than suggesting or implying that the specified device or element must have a particular orientation or be designed and operated in a particular orientation, and are therefore not to be construed as a limitation of the present application.

[0070] Furthermore, the terms “first” and “second” are used for descriptive purposes only and cannot be interpreted as indicating or implying a relative meaning or implicitly specifying the number of technical features indicated. Therefore, the features defined by “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present application, the term “a plurality of” means at least two, for example, two or three, unless expressly and specifically defined otherwise.

[0071] In the present application, the terms "fastening", "connection", "coupling" and "fixation" are to be understood in a broad sense, for example as a permanent connection, detachable connection or integral connection; or as a mechanical connection or electrical connection; or as a direct connection or indirect connection via an intermediate medium; or as an internal connection between two elements; or as an interaction between two elements. Those skilled in the art in this field may understand the specific meanings of these terms in the present application according to the specific situations.

[0072] In the present application, unless expressly stated and defined otherwise, the expression that a first feature is "on" or "below" a second feature can mean that the first feature is in direct contact with the second feature or that the first feature is in indirect contact with the second feature via an intermediate medium. Furthermore, the expression that the first feature is "above," "above," and "on" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply that the first feature is higher than the second feature. The expression that the first feature is "below," "below," or "under" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply that the first feature is lower than the second feature.

[0073] It should be noted that when an element is described as "attached to another element" or "arranged on another element," it may be placed directly on top of the other element, or an intermediate element may be present. Similarly, when an element is described as "connected to another element," it may be directly connected to the other element, or an intermediate element may be present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used here are for illustrative purposes only and do not represent definitive implementations.

[0074] According to a first embodiment of the present application, a mounting connection assembly 10, a mounting connection structure 1 comprising the mounting connection assembly 10, and a child carrier comprising the mounting connection structure 1 are provided.

[0075] The Fig. 1, Fig. 2, Fig. 3 to Fig. Figure 4 shows schematic representations of the mounting connection assembly 10 of the mounting connection structure 1 according to the first embodiment of the present application. The mounting connection assembly 10 comprises a movable connection assembly 11. The movable connection assembly 11 has a locking state and an unlocking state. The movable connection assembly 11 comprises a pivot base 111, at least one set of pivot arms 112, and at least one movable locking element 113. The movable locking element 113 serves as the locking element of the mounting connection assembly 10. The pivot arm 112 and the movable locking element 113 are attached to the pivot base 111. The mounting connection structure 1 is applicable, for example, to a child carrier, but is not limited to child carriers.The child carrier can be, for example, a crib (including a baby hammock, a baby playpen and other types of cribs), a stroller or the like, so that the pole elements of the child carrier equipped with the support connection structure 1 can be unfolded and folded, allowing switching between a used and a folded state and meeting different usage requirements of a user.

[0076] As in the Fig. 1 to Fig. As shown in Figure 2, each set of pivot arms 112 comprises a first pivot arm 112a and a second pivot arm 112b, which are pivotably connected to the same side of the pivot base 111. The first pivot arm 112a and the second pivot arm 112b are spaced apart from each other. A pivot axis about which the first pivot arm 112a rotates relative to a pivot base 111 is X1-X1. A pivot axis about which the second pivot arm 112b rotates relative to the pivot base 111 is X2-X2. The pivot axes X1-X1 and X2-X2 are essentially parallel to each other. A direction of movement MD1 of the movable locking element 113 relative to the pivot base 111 is essentially perpendicular to the pivot axis X1-X1. The movable locking element 113 is movably arranged on the pivot base 111 and can be switched between a motion-unlocked position and a motion-locked position.When the movable locking element 113 is in the motion-locked position, the movable connecting assembly 11 is in a locked state, the movable locking element 113 abuts the first pivot arm 112a and the second pivot arm 112b to limit the pivoting of the first pivot arm 112a and the second pivot arm 112b, and the locking element 113 locks the first pivot arm 112a and the second pivot arm 112b in an extended position.When the movable locking element 113 is in the movement-unlocked position, the movable connecting assembly 11 is in an unlocked state, the first pivot arm 112a and the second pivot arm 112b can rotate relative to the pivot base 111, and the movable locking element 113 allows the first pivot arm 112a and the second pivot arm 112b to pivot between the unfolded position and a folded position.

[0077] As in the Fig. 1 to Fig. As shown in Figure 2, the movable connecting assembly 11 can be provided with two sets of pivot arms 112. The two sets of pivot arms 112 are each arranged on two opposite sides of the pivot base 111. In some embodiments, the movable connecting assembly 11 can be provided with two movable locking elements 113, namely a first movable locking element 113a and a second movable locking element 113b. The two movable locking elements 113 each act on different sets of pivot arms 112. That is, the first movable locking element 113a is configured such that it limits or permits the pivoting of both the first pivot arm 112a and the second pivot arm 112b, which are located on the same side as the first movable locking element 113a.The second movable locking element 113b is configured to limit or permit the pivoting movement of both the first pivot arm 112a and the second pivot arm 112b, which are located on the same side as the second movable locking element 113. It is understood that in other embodiments, the movable connecting assembly 11 may be provided with one set of pivot arms 112 and one movable locking element 113. In some other embodiments, the movable connecting assembly may be provided with two sets of pivot arms 112 and one movable locking element 113; and the movable locking element 113 acts on both sets of pivot arms 112. Other configurations are also possible and are not limited here.

[0078] As in the Fig. 1 to Fig. As shown in Figure 2, the pivot base 111 includes a receiving groove 1113 designed to receive the movable locking element 113. The receiving groove 1113 is defined by an upper wall 1114 and a pair of side walls 1115 connected to two opposite sides of the upper wall 1114. One end of the pivot arm 112 is received in the receiving groove 1113 and pivotably connected to the pair of side walls 1115 of the pivot base 111 via a pin shaft (not shown), which could be, for example, a rivet, screw, bolt, or the like. The second pivot arm 112b is closer to the upper wall 1114 of the pivot base 111 than the first pivot arm 112a. When the second swivel arm 112b is in an unfolded state, one end of the second swivel arm 112b, which is received in the receiving groove 1113, can rest against the upper wall 1114 of the swivel base 111 to prevent excessive swiveling.

[0079] In one embodiment, the pivot base 111 is provided with a sliding groove 1111. In particular, the side wall 1115 of the pivot base 111 is provided with the sliding groove 1111. The sliding groove 111 is elongated and extends in a direction parallel to the direction of movement MD1 of the movable locking element 113. With reference to Fig. 3. The movable locking element 113 is provided with a connecting projection 1133. The connecting projection 1133 is inserted into the sliding groove 1111 and is movable along the sliding groove 1111. The movable locking element 113 is movably connected to the pivot base 111 by the insertion of the connecting projection 1133 into the sliding groove 1111. It is understood that in some other embodiments the movable locking element 113 may be provided with the sliding groove 111 and the pivot base 111 may be provided with the connecting projection 1133, and this is not limited to such embodiments.

[0080] As in the Fig. 1, Fig. 2 to Fig. As shown in Figure 3, the pivot base 111 is provided with a plurality of sliding grooves 1111, for example, four sliding grooves. The movable locking element 113 is correspondingly provided with a plurality of connecting projections 1133. For example, each movable locking element 113 is provided with two connecting projections so that the movable locking element 113 can move more smoothly along the MD1 direction. To ensure that the movable locking elements 113 are firmly connected and can move smoothly, each movable locking element 113 can be provided with four connecting projections 1133, and the pivot base 111 is provided with eight sliding grooves to interact with the two movable locking elements 113.

[0081] Fig. Figure 3 is a schematic view of the movable locking element 113 of the mounting connection structure 1 according to the first embodiment of the present application. The movable locking element 113 generally has a trapezoidal block structure. The movable locking element 113 comprises a first surface 1131 and a second surface 1132, which are arranged opposite each other, as well as a first side surface 11304 and a second side surface 11305, which respectively adjoin the first surface 1131 and the second surface 1132. When the movable locking element 113 is in the locked position, the first pivot arm 112a is stopped by the first surface 1131 and the second pivot arm 112b by the second surface 1132, so that the rotation of the first pivot arm 112a and the second pivot arm 112b relative to the pivot base 111 is limited.When the movable locking element 113 is in the unlocked position, the first pivot arm 112a is offset relative to the first surface 1131 and the second pivot arm 112b is offset relative to the second surface 1132, so that the first pivot arm 112a and the second pivot arm 112b can rotate relative to the pivot base 111. In this embodiment, the first pivot arm 112a abuts the first surface 1131 and the second pivot arm 112b abuts the second surface 1132 when the movable locking element 113 is in the locked position. When the movable locking element 113 is in the unlocked position, the first pivot arm 112a is separated from the first surface 1131 and the second pivot arm 112b is separated from the second surface 1132.The first pivot arm 112a abuts the first surface 1131 and the second pivot arm 112b abuts the second surface 1132, thus making the mounting connection structure 1 more stable. In some embodiments, the movable locking element 113 is further provided with a guide surface 1135 designed to cause at least one of the first pivot arms 112a and the second pivot arms 112b to pivot. In this embodiment, the guide surface 1135 is an arcuate surface located at a junction between the second side surface 11305 and the second surface 1132. The arrangement of the guide surface 1135 can cause the second pivot arm 112b to rotate along the guide surface 1135, thus preventing the movable locking element 113 from obstructing the rotation of the second pivot arm 112b.

[0082] As in the Fig. 1 to Fig. As shown in Figure 2, the movable connecting assembly 11 further comprises a connecting element 115. The connecting element 115 is drivenly connected to the two movable locking elements 113, such that the two movable locking elements 113 switch synchronously between the locked and unlocked positions. The connecting element 115 is movably arranged on the pivot base 111. The connecting element 115 is at least partially received in a receiving groove of the pivot base 111 and can move along a direction perpendicular to the pivot axis X1-X1. A direction of movement MD2 of the connecting element 115 is at an angle to the direction of movement MD1 of the movable locking element 113. The connecting element 115 is provided with an offset groove 1151.When the movable locking element 113 is in the unlocked position, it is at least partially received in the clearance groove 1151. The clearance groove 1151 has a lower wall 1156 and a pair of side walls 1157, which are connected to two opposite sides of the lower wall 1156. The lower wall 1156 faces the upper wall 1114 of the pivot base 111. The connecting element 115 is further provided with a spacer section 1152. The spacer section 1152 divides the clearance groove 1151 into a first clearance groove 1151a and a second clearance groove 1151b. The two movable locking elements 113 are each accommodated in the first clearance groove 1151a and the second clearance groove 1151b, respectively.This means that the first movable locking element 113a is designed such that it can be at least partially received in the first clearance groove 1151a, and the second movable locking element 113b is designed such that it can be at least partially received in the second clearance groove 1151b. In this embodiment, when the movable locking element 113 is in the unlocked position, the first side surface 11304 of the movable locking element 113 can abut the spacer section 1152.

[0083] The connecting element 115 is further provided with an actuable operating section 1153. The lower wall 1156 of the clearance groove 1151 forms the operating section 1153. When the movable locking assembly 11 is in a locked state, the operating section 1153 projects at least partially from the receiving groove 1113 of the pivot base 111 so that the operating section 1153 can be actuated, thereby driving the two movable locking elements 113 to move. In some embodiments (see Fig. 10) The operating section 1153 is further provided with a reinforcing rib 1154, which increases the strength of the operating section 1153.

[0084] In one embodiment as described in the Fig. 1, Fig. 2 to Fig. As shown in Figure 3, the pivot base 111 is provided with a guide hole 1116. For example, both side walls 1115 of the pivot base 111 are each provided with the guide hole 1116. The guide hole 1116 is, for example, an elongated hole. The direction of expansion of the guide hole 1116 runs essentially parallel to the direction of movement MD2 of the connecting element 115. Each movable locking element 113 is provided with a drive groove 116. The drive groove 116 has the form of a strip. The direction of expansion of the drive groove 116 forms an angle with both the direction of movement MD1 of the movable locking element 113 and the direction of movement MD2 of the connecting element 115. The connecting element 115 is connected to a drive element. The drive element is in sliding fit with the drive groove 116 to drive the movable locking element 113 to switch between the movable locked position and the movable unlocked position.In particular, the connecting element 115 is provided with a connecting through-hole 1155. The connecting through-hole 1155 extends through the pair of side walls of the clearance groove 1151. The connecting element 115 is drivenly connected to the two movable locking elements 113 via a drive pin 118, which extends through the guide hole 1116, the connecting through-hole 1155, and the drive groove 116, and is movably connected to the pivot base 111. The drive pin 118 can be, for example, a rivet, a screw, a bolt, or the like. In this embodiment, the drive pin 118 is designed as the drive element. In other embodiments, the drive element and the connecting element 115 can be formed in one piece.

[0085] It is understood that in some other illustrated embodiments, the drive groove 116 may be arranged on the connecting element 115. The drive element is connected to the movable locking element 113. The drive element and the movable locking element 113 may be formed separately or as a single piece. For example, the movable locking element 113 is provided with the connecting through-hole 1155, and the pivot base 111 is provided with the guide hole 1116. The guide hole 1116 is an elongated hole that extends substantially parallel to the direction of movement MD1 of the movable locking element 113. For example, the guide hole 1116 may be connected to the sliding groove 1111 or may be designed as a sliding groove 1111.The connecting element 115 is connected to the two movable locking elements 113 in a driven manner via the drive pin 118, which extends through the guide hole 1116, the drive groove 116 and the through hole 1155. The drive pin 118 is designed as a drive element.

[0086] In some embodiments, such as in the Fig. 1 to Fig. As shown in Figure 2, the movable connecting assembly 11 further comprises a movable return element 114, which is arranged between the two movable locking elements 113. The movable return element 114 is designed to bias the two movable locking elements 113 and move them in the direction of the locked position. The movable return element 114 is, for example, a compression spring. With reference to Fig. 3. The two movable locking elements 113 are each provided with a receiving groove 1136 designed to at least partially receive the movable return element 114, thereby allowing both ends of the movable return element 114 to be received in the receiving grooves 1136, thus preventing deflection of the movable return element 114 during the preloading of the movable locking elements 113. In some other embodiments, one of the two movable locking elements 113 is provided with the receiving groove 1136, and one end of the movable return element 114 is received in the receiving groove 1136.

[0087] According to the mounting connection structure 1 in the first embodiment of the present application, the movable locking element 113 can be switched between the movement-locked position and the movement-unlocked position by moving the movable locking element 113 in order to limit or allow the pivoting of the pivoting arm 112, thereby achieving the mounting connection structure 1 which is simple in design and can easily switch between states.

[0088] The Fig. 4, Fig. 5 to Fig. Figure 6 shows schematic representations of a child carrier which, according to the first embodiment of the present application, switches from an open state to a folded state. The child carrier uses the mounting connection assembly 10 of the first embodiment.

[0089] As in the Fig. 4, Fig. 5 to Fig. As shown in Figure 6, the child carrier is, for example, a crib, a playpen, or the like. The child carrier can comprise a bed frame 1000 and an enclosure (not shown). The enclosure can be made of fabric. The enclosure is connected to the bed frame 1000 to define a receiving space for the child carrier, and a child can sleep or play in the receiving space. The bed frame 1000 comprises an armrest frame 100 and several support legs 200 configured to support the armrest frame 100. The armrest frame 100 comprises a pair of first armrest frames 110 and a pair of second armrest frames 120 adjacent to the first armrest frames 110. Adjacent first armrest frames 110 and second armrest frames 120 are each connected to each other via corner connectors 130.One end of each support leg 200 is connected to the armrest frame 100 via the corner connecting element 130, and another end of each support leg 200 is fitted with a roller to facilitate the movement of the child carrier.

[0090] In one embodiment as described in the Fig. 4, Fig. 5 to Fig. As shown in Figure 6, each first armrest frame 110 comprises two sets of swivel arms 102a and 102b. Each set of swivel arms 102a and 102b comprises a first swivel arm 102a and a second swivel arm 102b. The first ends of the two first swivel arms 102a, which face each other, are pivotally connected to the connecting base 101, and the second ends of the two first swivel arms 102a, which face away from each other, are connected to the respective corner connecting elements 130. The first ends of the two second swivel arms 102b of the first armrest frame 110, which face each other, are pivotally connected to the connecting base 101, and the second ends of the two second swivel arms 102b of the first armrest frame 110, which point away from each other, are connected to the respective corner connecting elements 130. The second rotating arm 102b is located above the first rotating arm 102a.

[0091] The first two pivot arms 102a of the first armrest frame 110 are each connected to the adjacent support leg 200 via a connecting rod 140, so that the two support legs 200 adjacent to each first armrest frame 110 can approach each other when the bed frame 1000 is folded. In particular, the support leg 200 is provided with a sliding element 400. The sliding element 400 is slidably mounted on the support leg 200. A first end of the connecting rod 140 is rotatably connected to the sliding element 400, and a second end of the connecting rod 140 is rotatably connected to the adjacent first pivot arm 102a, so that the two support legs 200 adjacent to each first armrest frame 110 can approach each other in a first direction D1 when the bed frame 1000 is folded. The first swivel arm 102a of the first armrest frame 110 is provided with a concave surface 104.The concave surface 104 can prevent excessive protrusion of the connecting rod 140 from the first swivel arm 102a after the armrest frame 100 has been folded.

[0092] Accordingly, every second armrest frame 120 comprises two sets of swivel arms 102a and 102b. Each set of swivel arms 102a and 102b comprises a first swivel arm 102a and a second swivel arm 102b. The first ends of the two first swivel arms 102a of the second armrest frame 120, which face each other, are pivotally connected to the connecting base 101, and the first ends of the two second swivel arms 102b of the second armrest frame 120, which face each other, are pivotally connected to the connecting base 101. The first two swivel arms 102a of the second armrest frame 120 are each connected to the adjacent support leg 200 via the connecting rod 140, so that the two support legs 200, which are adjacent to every second armrest frame 120, can move closer together when the bed frame 1000 is folded up.In particular, the first end of the connecting rod 140 is rotatably connected to the sliding element 400, and the second end of the connecting rod 140 is rotatably connected to the first pivot arm 102a. Two adjacent first pivot arms 102a, connected to the same corner connecting element 130, are each connected to the same sliding element 400 via different connecting rods 140, so that when the bed frame 1000 is folded by folding the armrest frame 100 in one direction (the first direction D1 or the second direction D2), the multiple support legs 200 can be caused to move towards each other simultaneously in the first direction D1 and the second direction D2. The first pivot arm 102a of the second armrest frame 120 is provided with a concave surface 104. The concave surface 104 can prevent excessive protrusion of the connecting rod from the first swivel arm 102a after the armrest frame 100 has been folded.

[0093] According to the child carrier in the embodiments of the present application, the child carrier can be switched between the folded and unfolded states by arranging the foldable first armrest frame 110 and the foldable second armrest frame 120. In one embodiment, the first armrest frame 110 and the second armrest frame 120 are each connected to the respective adjacent support legs 200 via the connecting rods 140, so that when unfolding or folding the child carrier, the multiple support legs 200 of the child carrier can be moved away from each other or towards each other, thus enabling the child carrier to be unfolded or folded quickly, which is convenient for the user.

[0094] As in Fig. As shown in Figure 4, the bed frame 1000 is provided with a plurality of bracket connection assemblies 10, as described above. The bracket connection assembly 10 comprises several movable connection assemblies 11. The several movable connection assemblies 11 each serve as first armrest frames 110 and second armrest frames 120. In particular, two sets of first pivot arms 102a and two sets of second pivot arms 102b of each first armrest frame 110 correspond to two sets of swivel arms 112 (i.e., the first swivel arm 112a and the second swivel arm 112b) of the movable connection assembly 11, and the connection base 101 of each first armrest frame 110 corresponds to the swivel base 111 of the movable connection assembly 11. Similarly, two sets of first pivot arms 102a and two sets of second pivot arms 102b of each second armrest frame 120 correspond to two sets of swivel arms 112 (i.e., the first swivel arm 112a and the second swivel arm 112b) of the movable connection assembly 11, and the connection base 101 of each first armrest frame 110 corresponds to the swivel base 111 of the movable connection assembly 11.the first swivel arm 112a and the second swivel arm 112b) of the movable connecting assembly 11, and the connecting base 101 of each second armrest frame 120 corresponds to the swivel base 111 of the movable connecting assembly 11.

[0095] According to the first embodiment of the present application, a mounting connection structure 1 is further provided. The mounting connection structure 1 comprises several mounting connection assemblies 10, corner connecting elements 130, support legs 200, and several connecting rods 140. The several mounting connection assemblies 10 are connected to the corner connecting element 130. The support leg 200 is connected to the corner connecting element 130. The at least one pivot arm 102a / 102b of each mounting connection assembly 10 is connected to a sliding structure via the connecting rod 104, such that when the at least one pivot arm of one of the mounting connection assemblies 10 rotates, the at least one pivot arm of another mounting connection assembly 10 is driven to rotate via the connecting rod 140 and the sliding structure.In this embodiment, the multiple mounting connection assemblies 10 each comprise the first armrest frame 110 and the second armrest frame 120. The sliding structure comprises the sliding element 400, which is slidably arranged on the support leg 200. The first armrest frame 110 and the second armrest frame 120 are connected to the same sliding element 400 via the connecting rods 140. In other illustrated embodiments, the sliding structure may, for example, comprise a sliding groove and a pin shaft extending through the sliding groove; and the first armrest frame 110 and the second armrest frame 120 are each connected to the same sliding pin 400 via the connecting rods 140, this being no limitation in the present application.

[0096] As in the Fig. 4, Fig. 5 to Fig. Figure 6 shows how to fold the crib (baby carrier) when referring to Fig. 4. The connecting element 115 of the movable connecting assembly 11, which is arranged on a pair of first armrest frames 110 (or a pair of second armrest frames 120), is pressed in the direction of MD2, and the two movable locking elements 113 can be driven by drive connections between the connecting element 115 and the two movable locking elements 113 to move from the locked position to the unlocked position, so that the two first pivot arms 102a and the two second pivot arms 102b of the first armrest frames 110 are pivotable. In this case, the movable connecting assembly 11, which is arranged on the second armrest frame 120 (or the first armrest frame 110), is still in the locked state, and the sliding element 400 cannot move downwards (i.e., in a direction away from the corner connecting element 130) or can only move a very small distance.Therefore, the two first pivot arms 102a and the two second pivot arms 102b of the first armrest frame 110 (or of the second armrest frame 120) can only be folded slightly together, so that the two movable locking elements 113 of the movable connecting assembly 11, which are arranged on the first armrest frame 110 (or the second armrest frame 120), are restricted to the unlocked position.Then the connecting element 115 of the movable connecting assembly 11, which is arranged on the pair of second armrest frames 120 (or the first armrest frames 110), is pressed towards MD2, and the two movable locking elements 113 are driven by the drive connections between the connecting element 115 and the two movable locking elements 113 to move from the movable locking position to the unlocked position, so that the two first pivot arms 102a and the two second pivot arms 102b of the second armrest frames 120 are pivotable. In this case, with reference to . Fig. 5. When the user further folds one of the first armrest frames 110 and the second armrest frame 120, a connecting rod 140 drives the sliding element 400 to move downwards, and the downward movement of the sliding element 400 can drive another connecting rod 140 to move downwards, thereby driving another of the first armrest frames 110 and the second armrest frame 120 to fold, so that the multiple support legs 200 simultaneously approach each other in direction D1 and in direction D2, and the first armrest frame 110 and the second armrest frame 120 can be folded simultaneously, thus achieving rapid folding of the child carrier (see Fig. 6) It is understood that the child carrier in this embodiment comprises a pair of first armrest frames 110 and a pair of second armrest frames 120. When the movable connecting assemblies 11 of the pair of first armrest frames 110 and the pair of second armrest frames 120 are both in the unlocked state, a connection relationship between the first pivot arms 102a, the multiple connecting rods 140, and the four sliding elements 400 causes each first armrest frame 110 or each second armrest frame 120 to be continuously folded, and then the pair of first armrest frames 110 and the pair of second armrest frames 120 can be folded simultaneously.

[0097] If the crib is to be unfolded, the following can be done with reference to Fig. 6. The two first pivot arms 102a and the two second pivot arms 102b of one of the first armrest frames 110 (or one of the second armrest frames 120) are pivoted to rotate from the folded position to the unfolded position. The connecting rod 140 drives the sliding element 400 to move upwards (i.e., towards the corner connecting element 130), and thereby another connecting rod 140, which is connected to this sliding element 400, drives the two first pivot arms 102a and the two second pivot arms 102b of the corresponding second armrest frame 120 (or the corresponding first armrest frame 110) to unfold, so that the two first armrest frames 110 and the two second armrest frames 120 are unfolded synchronously and thus the child carrier is unfolded (see Fig. 4).

[0098] It goes without saying that when the cot is in the folded state (see Fig. 6) the two sets of swivel arms 102a and 102b of the first armrest frame 110 can rotate to extend substantially vertically (i.e., rotate to be substantially perpendicular to the direction of movement MD1 of the two locking elements 113), and are each located on one of the two opposite sides of the two movable locking elements 113, which can cause the two movable locking elements 113 to approach each other and compress the movable return element 114 to prevent the two movable locking elements 113 from sliding into the motion-locked position on the two opposite sides. As the crib is gradually brought into the unfolded state, the two sets of swivel arms 102a and 102b of the first armrest frame can gradually rotate to extend substantially horizontally (i.e.,to rotate so that they are essentially parallel to the direction of movement MD1 of the two locking elements 113), while the limiting forces of the two sets of swivel arms 102a and 102b of the first armrest frame 110 on the two movable locking elements 113 can be reduced, and the two movable locking elements 113 automatically move from the unlocked position to the locked position under an elastic restoring force of the movable restoring element 114, thereby locking the crib in the unfolded state. The second armrest frame 120 also exhibits a similar process, which is not described in detail here.It is understandable that as the second rotary arm 102b (or the second pivot arm 112b) rotates stepwise to extend horizontally, the limiting force of the second rotary arm 102b (or the second pivot arm 112b) on the movable locking element 113 is gradually weakened, and under the elastic restoring force of the movable restoring element 114, the second rotary arm 102b (or the second pivot arm 112b) can rotate and slide while bearing against the guide surface 1135. The guide surface 1135 is arcuate.

[0099] According to the child carrier in the first embodiment of the present application, the child carrier can be quickly folded or unfolded by the arrangement of the support connection structure, which is simple in design and easy to use.

[0100] The Fig. 7, Fig. 8 to Fig. Figure 9 shows schematic representations of a mounting connection structure 1 according to a second embodiment of the present application. The mounting connection structure 1 is provided with two mounting connection assemblies 10. Both mounting connection assemblies 10 are designed as movable connection assemblies 11, each comprising a first movable assembly 11a and a second movable assembly 11b. The two movable connection assemblies 11 are drive-connected to each other via a coupling element 20, such that when one of the movable connection assemblies 11 is actuated, the other of the movable connection assemblies 11 can be driven synchronously to switch between the locked and unlocked states, allowing the two interconnected movable connection assemblies 11 to switch synchronously between the states.

[0101] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, each movable connecting assembly 11 comprises the pivot base 111, at least one set of pivot arms 112, at least one movable locking element 113, and the movable return element 114, which is designed to bias the movable locking element 113 toward the motion-locked position. In this embodiment, each movable connecting assembly 11 is provided with two sets of pivot arms 112 and two movable locking elements 113. The two movable locking elements 113 each act on different sets of pivot arms 112 to limit or allow the rotation of the respective pivot arms 112 relative to the pivot base 111. The movable return element 114 is connected to the two movable locking elements 113 to bias the two movable locking elements 113 so that they each move toward the motion-locked position.With reference to the . Fig. 7, Fig. 8 to Fig. 9 Each movable connecting assembly 11 is further provided with a connecting element 115. The connecting element 115 is connected to the two movable locking elements 113 in a driven manner.

[0102] In one embodiment, each set of pivot arms 112 comprises the first pivot arm 112a and the second pivot arm 112b, which are pivotably connected to the same side of the pivot base 111. The first pivot arm 112a and the second pivot arm 112b are spaced apart from each other. In this embodiment, the first pivot arm 112a is located below the second pivot arm 112b. When the movable locking element 113 is in the movement-locked position, the movable locking element 113 abuts the first pivot arm 112a and the second pivot arm 112b to limit the pivoting movement of the first pivot arm 112a and the second pivot arm 112b; and when the movable locking element 113 is in the movement-unlocked position, the first pivot arm 112a and the second pivot arm 112b are rotatable relative to the pivot base 111.

[0103] In this embodiment, the mounting connection structure 1 has at least the following configurations, which differ from the mounting connection structure 1 in the first embodiment.

[0104] The Fig. 10 to Fig. Figure 11 shows schematic representations of a connecting element 115a of the first movable assembly 11a and a connecting element 115b of the second movable assembly 11b, respectively. The connecting element 115a of the first movable assembly 11a is provided with an actuating control section 1153. The connecting element 115b of the second movable assembly 11b is not provided with the control section 1153, so that the user can only actuate the connecting element 115a of the first movable assembly 11a to drive the two movable connecting assemblies 11 so that they move synchronously from the locked state to the unlocked state. In some embodiments, which relate to Fig. Referring to section 10, the operating section 1153 of the connecting element 115a is further provided with a reinforcing rib 1154, which can increase the strength of the operating section 1153. The reinforcing rib 1154 is connected to the lower wall 1156 of the deflection groove 1151 and runs substantially parallel to a pair of side walls of the deflection groove 1151.

[0105] With reference to the Fig. 7, Fig. 8 to Fig. 9 The connecting element 115 is provided with a drive groove 116. The drive groove 116 has the form of a strip. The direction of extension of the drive groove 116 forms an angle with both the direction of movement MD1 of the movable locking element 113 and the direction of movement MD2 of the connecting element 115. Two drive grooves 116 are provided. The two drive grooves 116 are arranged symmetrically on the side wall 1157 of the first clearance groove 1151a and on the side wall of the second clearance groove 1151b, respectively. The connecting element 115 is connected to a drive element. The drive element is in a sliding fit with the drive groove 116 to drive the movable locking element 113 to switch between the movable locked position and the movable unlocked position. In particular, each movable locking element 113 is provided with a driving convex section 117.The driving convex section 117 and the movable locking element 113 are formed in one piece. In this embodiment, the driving projection 117 is designed as the driving element. Each driving convex section 117 is fitted into the corresponding drive groove 116 to establish a drive connection between the movable locking element 113 and the connecting element 115. Alternatively, it is understood that the movable locking element 113 is provided with the drive groove 116, the connecting element 115 is provided with the driving convex section 117, and the driving convex section 117 is fitted into the drive groove 116 to realize the drive connection between the movable locking element 113 and the connecting element 115.

[0106] In some other embodiments, each movable locking element 113 can be provided with the drive groove 116, wherein the connecting element 115 is accordingly provided with two connecting through-holes 1155. The connecting through-holes 1155 extend through the pair of side walls of the deflection groove 1151. The pivot base 111 is provided with a guide hole 1116. The guide hole 1116 is, for example, an elongated hole. The direction of extension of the guide hole 1116 is substantially parallel to the direction of movement MD2 of the connecting element 115. The connecting element 115 is drivenly connected to the two movable locking elements 113 via the drive pin 118, which extends through the guide hole 1116, the connecting through-hole 1155, and the drive groove 116, and is movably connected to the pivot base 111. The drive pin 118 can be, for example, a rivet, a screw, a bolt or the like.In some other illustrated embodiments, the connecting element 115 can be provided with the drive groove 116, the movable locking element 113 can be provided with the connecting through-hole 1155, and the pivot base 111 is provided with the guide hole 1116. The guide hole 1116 is an elongated hole that extends substantially parallel to the direction of movement of the movable locking element 113. For example, the guide hole 1116 can be connected to the sliding groove 1111 or be the sliding groove 1111 itself. The connecting element 115 is drivenly connected to the two movable locking elements 113 via the drive pin 118, which extends through the guide hole 1116, the drive groove 116, and the through-hole 1155.

[0107] The Fig. 12 to Fig. Figure 13 are schematic representations of a movable locking element 113 according to the second embodiment of the present application. The movable locking element 113 generally has an L-shaped block structure. The movable locking element 113 comprises a first part 11301 and a second part 11302 arranged on the first part 11301. The first part 11301 forms a first surface 1131, which is designed to abut the first pivot arm 112a, and the second part 11302 forms a second surface 1132, which is designed to abut the second pivot arm 112b. The first surface 1131 is substantially parallel to the second surface 1132.When the movable locking element 113 is in the movement-locked position, the first pivot arm 112a is stopped by the first surface 1131 and the second pivot arm 112b by the second surface 1132, so that the rotation of the first pivot arm 112a and the second pivot arm 112b relative to the pivot base 111 is limited. When the movable locking element 113 is in the movement-unlocked position, the first pivot arm 112a is offset relative to the first surface 1131, and the second pivot arm 112b is offset relative to the second surface 1132, so that the first pivot arm 112a and the second pivot arm 112b can rotate relative to the pivot base 111. In this embodiment, the first pivot arm 112a abuts the first surface 1131, and the second pivot arm 112b abuts the second surface 1132 when the movable locking element 113 is in the movement-locked position.When the movable locking element 113 is in the unlocked position, the first pivot arm 112a is separated from the first surface 1131 and the second pivot arm 112b is separated from the second surface 1132. The first pivot arm 112a abuts the first surface 1131 and the second pivot arm 112b abuts the second surface 1132, thus making the mounting connection structure 1 more stable. A yielding concave section 11303 is formed between the first part 11301 and the second part 11302, so that when the movable locking element 113 is in the unlocked position, the second surface 1132 is offset relative to the second pivot arm 112b and the second pivot arm 112b is rotatable relative to the pivot base 111.In contrast to the first embodiment, in this embodiment the movable locking element 113 may not be provided with the guide surface 1135, and an arc-shaped chamfer may be arranged on an edge of the second surface 1132 next to the second pivot arm 112b.

[0108] As in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the two ends of the coupling element 20 are each connected to the movable locking elements 113 of the two movable connecting assemblies 11, so that the movable locking elements 113 of the two movable connecting assemblies 11 can switch synchronously between the locked and unlocked positions. One end of the coupling element 20 is connected to the second movable locking element 113b of the first movable assembly 11a, and another end of the coupling element 20 is connected to the second movable locking element 113b of the second movable assembly 11b.

[0109] Fig. Figure 14 is a schematic view of a coupling element 20 according to the second embodiment of the present application. The coupling element 20 comprises: a pull cable 21; a first locking end 22a and a second locking end 22b, each arranged at two ends of the pull cable 21; and a sheath 23, which is arranged outside the pull cable 21. The first locking end 22a and the second locking end 22b have the same structure. The sheath 23 is arranged outside the pull cable 21. At least a portion of the pull cable 21, the first locking end 22a, and the second locking end 22b are all extended and project from the sheath 23. One end of the sheath 23 is provided with a first connecting end 24a, which is designed to allow the passage of the pull rope 21, and another end of the sheath 23 is provided with a second connecting end 24b, which is designed to allow the passage of the pull rope 21. With reference to the Fig. 7, Fig. 8 to Fig. 9 the first connection end 24a is limited by the pivot base 111 of the first movable assembly 11a, and the second connection end 24b is limited by the pivot base 111 of the second movable assembly 24a.

[0110] With reference to the Fig. In sections 7 to 9, 12 and 13, the movable locking element 113 is provided with an engagement hole 1137 designed to allow the pull cable 21 to pass through it. The first locking end 22a and the second locking end 22b engage with their respective engagement holes 1137. In particular, the first movable locking element 113a and the second movable locking element 113b of each movable connecting assembly 11 are each provided with the engagement hole 1137. The first locking end 22a engages with the engagement hole 1137 of the second movable locking element 113b of the first movable assembly 11a, and the second locking end 22b engages with the engagement hole 1137 of the second movable locking element 113b of the second movable assembly 11b.The pull cable 21 passes successively through the engagement hole 1137 of the second movable locking element 113b of the first movable assembly 11a, the engagement hole 1137 of the first movable locking element 113a of the second movable assembly 11b, the movable return element 114, and the engagement hole 1137 of the second movable locking element 113b of the second movable assembly 11b. The pull cable 21 can, for example, be a steel cable, a carbon fiber cable, or the like. It is understood that in some other embodiments not shown, the first movable locking element 113a of the first movable assembly 11a may not be provided with the engagement hole 1137, and the first movable locking element 113a of the second movable assembly 11b may also not be provided with the engagement hole 1137, which is not limited to the present application.

[0111] As in the Fig. 12 to Fig. As shown in Figure 13, the engagement hole 1137 is provided in the second part 11302 of the movable locking element 113. One end of the engagement hole 1137 is in contact with the receiving groove 1136 of the movable locking element 113. In some embodiments, the engagement hole 1137 is provided with an abutment section 1138. With reference to Fig. In this embodiment, the first locking end 22a and the second locking end 22b are designed such that they each bear against the abutment sections 1138 in the corresponding engagement holes 1137, so that the first locking end 22a and the second locking end 22b can engage with the respective engagement holes 1137. In this embodiment, the abutment section 1138 is located at a different end of the engagement hole 1137, which is away from the receiving groove 1136. In this embodiment, the abutment section 1138 is arranged on an edge of the corresponding second movable locking element 113b, which is away from the receiving groove 1136. The first locking end 22a is at least partially received in the engagement hole 1137 of the second movable locking element 113b of the first movable assembly 11a and abuts against the impact section 1138 of the second movable locking element 113b of the first movable assembly 11a.The second locking end 22b is located outside the engagement hole 1137 of the second movable locking element 113b of the second movable assembly 11b and abuts the impact section 1138 of the second movable locking element 113b of the second movable assembly 11b. In other embodiments, the position of the impact section 1138 on the second movable locking element 113b can be changed, thereby adjusting the relative positions between the first locking end 22a, the second locking end 22b, and the respective second movable locking elements 113b. The impact section 1138 need not necessarily be positioned such that the edge of the second movable locking element 113b is located away from the receiving groove 1136.

[0112] As in the Fig. 12 and Fig. As shown in Figure 13, in some embodiments the movable locking element 113 is further provided with an attachment through-hole 1139 through which the first locking end 22a or the second locking end 22b can extend.

[0113] For example, the second movable locking element 113b of the second movable assembly 11b is further provided with the mounting through-hole 1139 through which the second locking end 22b has extended, and the second movable locking element 113b of the first movable assembly 11a is further provided with the mounting through-hole 1139 through which the first locking end 22a has extended, as shown in Fig. Figure 7 shows the mounting through-hole 1139, which is provided in the second part 11302. One end of the mounting through-hole 1139 is connected to the receiving groove 1136. The mounting through-hole 1139 is connected to the engagement hole 1137, allowing the pull cable 21 to move between the mounting through-hole 1139 and the engagement hole 1137. When the coupling element 20 is to be mounted, the first locking end 22a and the second locking end 22b can be extended through their respective mounting through-holes 1139. Then, the pull cable 21 is moved into the engagement hole 1137, and the first locking end 22a and the second locking end 22b are engaged with their respective connecting sections 1138.If the coupling element 20 is to be removed, the first locking end 22a, the second locking end 22b, and the pull cable 21 can first be moved from the engagement holes 1137 into the mounting through holes 1139, and then the first locking end 22a and the second locking end 22b can protrude through and out of the corresponding mounting through holes 1139. The arrangement of the mounting through hole 1139 in conjunction with the engagement hole 1137 allows the coupling element 20 to be easily installed and removed.

[0114] In one embodiment as described in the Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the pivot base 111 of the movable connecting assembly 11 is provided with a fixed frame 119. The pull cable 21 of the coupling element 20 can extend through the fixed frame 119. The fixed frame 119 is located in the receiving groove 1113 of the pivot base 111. The fixed frame 119 is formed by cutting off a portion of the side wall 1115 of the pivot base 111 and bending this portion inwards (i.e., towards the receiving groove 1113). The fixed frame 119 and the pivot base 111 are formed in one piece, which improves the strength of the connection between the fixed frame 119 and the pivot base 111 and reduces manufacturing costs. It is understood that in other embodiments the fixed frame 119 may be a component which is attached to the side wall 1115 of the pivot base 111, for example by welding, riveting, gluing or the like, which is not limited in the present application.

[0115] With reference to the Fig. 7, Fig. 8 to Fig. 9 The pivot base 111 is provided with the fixed frame 119. The fixed frame 119 is formed by tearing off a portion of one of the side walls 1115 of the pivot base 111 and bending this portion inwards. In the first movable assembly 11a, the fixed frame 119 is arranged next to the second movable locking element 113b and is located at the yielding concave section 11303 of the second movable locking element 113b. In the second movable assembly 11b, the fixed frame 119 is arranged next to the first movable locking element 113a and is located at the yielding concave section 11303 of the first movable locking element 113a. The first connection end 24a is bounded by the fixed frame 119 of the first connection unit, and the second connection end 24b is bounded by the fixed frame 119 of the second connection unit.In particular, the first connecting end 24a abuts the fixed frame 119 of the first connecting unit, and the second connecting end 24b abuts the fixed frame 119 of the second connecting unit. The first locking end 22a and the first connecting end 24a are each located on one of the two opposite sides of the fixed frame 119. The second locking end 22b and the second connecting end 24b are each located on one of the two opposite sides of the fixed frame 119. In other embodiments, the fixed frame 119 can be formed by tearing off portions from two side walls 1115 of the pivot base 111 and bending these portions inwards. The pivot base 111 can be provided with a plurality of fixed frames 119, for example, with two fixed frames 119.The two fixed frames 119 are a first fixed frame 119a, which is arranged adjacent to the first movable locking element 113a, and a second fixed frame 119a, which is arranged adjacent to the second movable locking element 113b. The first connecting end 24a of the coupling element 20 abuts the second fixed frame 119b of the first movable assembly 11a, and the second connecting end 24b of the coupling element 20 abuts the first fixed frame 119a of the second movable assembly 11b. It is understood that in some other embodiments not shown, the pivot base 111 of one of the first movable assemblies 11a and the second movable assemblies 11b may be provided with one fixed frame 119, and the other of the first movable assemblies 11a and the second movable assemblies 11b may be provided with two fixed frames 119, which is not limited in the present application.

[0116] According to the mounting connection structure 1 in the second embodiment of the present application, the operating section 1153 of the first movable assembly 11a is actuated to move the first movable locking element 113a and the second movable locking element 113b of the first movable assembly 11a from the locked position to the unlocked position, and the second movable locking element 113b of the second movable assembly 11b is driven by the coupling element 20 to move synchronously from the movement-locked position to the unlocked position.The movement of the second movable locking element 113b of the second movable assembly 11b can drive the connecting element 115b of the second movable assembly 11b to move, thereby driving the first movable locking element 113a of the second movable assembly 11b to move from the locked position to the unlocked position, so that the pivot arms 112 of the two movable connecting assemblies 11 can pivot relative to the pivot base 111. The mounting connection structure 1 in this embodiment is simple in design and easy to use.

[0117] Fig. Figure 15 is a schematic view of a child carrier according to the second embodiment of the present application. The child carrier may comprise a bed frame 1000 and an enclosure (not shown). The enclosure may be made of fabric. The enclosure is connected to the bed frame 1000 to define a receiving space for the child carrier, and a child may sleep or play in the receiving space. The bed frame 1000 comprises several armrest frames 100 and several support legs 200 configured to support the armrest frames 100. The armrest frames 100 comprise a pair of first armrest frames 110 and a pair of second armrest frames 120 adjoining the first armrest frames 110. The child carrier in this embodiment has at least the following configurations, which differ from those of the child carrier in the first embodiment.

[0118] As in Fig. As shown in Figure 15, the bed frame 1000 is provided with the bracket connection assembly 10 of the bracket connection structure 1 of the second embodiment. The bracket connection assembly 10 comprises a first motion assembly 11a and a second motion assembly 11b. The first motion assembly 11a serves as the first armrest frame 110, and the second motion assembly 11b serves as the second armrest frame 120. In particular, two sets of first pivot arms 102a and two sets of second pivot arms 102b of each first armrest frame 110 correspond to two sets of pivot arms 112 (i.e., the first pivot arms 112a and the second pivot arms 112b) of the first motion assembly 11a. The connection base 101 of each first armrest frame 110 corresponds to the pivot base 111 of the first movable assembly 11a. Two sets of first swivel arms 102a and two sets of second swivel arms 102b of each second armrest frame 120 each correspond to two sets of swivel arms 112 (i.e.the first swivel arms 112a and the second swivel arms 112b) of the second movable assembly 11b. The connecting base 101 of each second armrest frame 120 corresponds to the swivel base 111 of the second movable assembly 11b.

[0119] In this embodiment, the mounting structure 1 further comprises the corner connecting elements 130, the support legs 200, and the connecting rods 140. The first armrest frame 110 and the second armrest frame 120 are connected to the corner connecting element 130. The support leg 200 is connected to the corner connecting element 130. The support leg 200 is provided with the sliding element 400. The first armrest frame 110 and the second armrest frame 120 are connected to the same sliding element 400 via the respective connecting rods 140. The first armrest frame 110 and the second armrest frame 120 are drive-connected to each other via the coupling element 20.

[0120] If the child carrier is to be folded, reference is made to Fig. 7. The connecting element 115a of the first motion unit 11a is pressed in the direction of MD2 to drive the two movable locking elements 113 of the first motion unit 11a out of the in Fig. 7 shown motion-locked position into the in Fig. 8 to move to the unlocked position shown. Simultaneously, the second movable locking element 113b of the first movable assembly 11a drives the second movable locking element 113b of the second movable assembly 11b to move via the coupling element 20 into the unlocked position, and the connecting element 115b is drivenly connected to the two movable locking elements 113 to drive the first movable locking element 113a of the second movable assembly 11b to move into the unlocked position. That is, the connecting element 115a of the first movable assembly 11a is actuated to switch the two movable connecting assemblies 11 synchronously into the unlocked state.Therefore, if the child carrier is to be folded, the two first armrest frames 110 and the two second armrest frames 120 can be unlocked by actuating the two operating sections on the two first armrest frames 110, and the connecting elements 115a on the two first armrest frames 110 are continuously pressed to hold the two movable connecting assemblies 11 in the unlocked state. In this case, a downward force in the direction of MD2 is exerted on the pivot base 111 of any one first armrest frame 110, and driven by the sliding element 400, the two first armrest frames 110 and the two second armrest frames 120 can be folded synchronously, thus folding the child carrier. It is not necessary to actuate the four pivot bases 111 individually.

[0121] The unfolding process of the child carrier in this embodiment is essentially the same as in the first embodiment, in which the movable locking elements 113 gradually move into the movement-locked position as the two sets of swivel arm elements 102a and 102b of each of the two first armrest frames 110 and the two sets of swivel arm elements 102a and 102b of each of the two second armrest frames 120 gradually rotate into a horizontal position. The details are not described again here.

[0122] According to a third embodiment of the present application, a mounting connection structure 1 and a child carrier with the mounting connection structure 1 are provided.

[0123] The Fig. 16, Fig. 17, Fig. 18, Fig. 19 to Fig. Figures 20 are schematic representations of the mounting connection assembly 10 of the mounting connection structure 1 according to the third embodiment of the present application. The mounting connection assembly 10 comprises a rotary connection assembly 12. The rotary connection assembly 12 comprises a rotary base 121, a first rotary arm 122a, a second rotary arm 122b, and a rotary locking element 123. The rotary locking element 123 serves as a locking element for the mounting connection assembly 10. The first rotary arm 122a is pivotally connected to the rotary base 121. The second rotary arm 122b is pivotally connected to the rotary base 121. The first rotary arm 122a and the second rotary arm 122b each have an open position (see Figure 20). Fig. 18) and a folded position (see Fig. 19) When the rotational locking element 123 is in a rotationally unlocked position, the rotational connection assembly 12 is in an unlocked state, the first rotational arm 122a is rotatable relative to the rotational base 121, and the second rotational arm 122b is rotatable relative to the rotational base 121. When the rotational locking element 123 is in a rotationally locked position, the rotational connection assembly 12 is in a locked state, and the first rotational arm 122a cannot rotate relative to the rotational base 121. In some embodiments not shown, the rotational connection assembly 12 may not be provided with the second rotational arm 122b, which is not limited in the present application.

[0124] As in the Fig. 16 to Fig. As shown in Figure 17, the rotation base 121 includes a receiving groove 1212 designed for the rotation locking element 123. The receiving groove 1212 is defined by an upper wall 1214 and a pair of side walls 1213, each connected to two opposite sides of the upper wall 1214. One end of the rotation arm 122 is received in the receiving groove 1212 and pivotably connected to the pair of side walls 1213 of the rotation base 121 via a pin shaft (not shown), which could be, for example, a rivet, screw, bolt, or the like. The second rotation arm 122b is located closer to the upper wall 1214 of the pivot base 121 than the first rotation arm 122a. That is, the second rotation arm 122b is located above the first rotation arm 122a.

[0125] With reference to Fig. In one embodiment, the first rotating arm 122a and the second rotating arm 122b are each pivotably connected to the side wall 1213 of the rotating base 121 via the pin shaft (which may be, for example, a rivet, a screw, a bolt, or the like). An axis of rotation about which the first rotating arm 122a rotates relative to the rotating base 121 is Y1-Y1, and an axis of rotation about which the second rotating arm 122b rotates relative to the rotating base 121 is Y2-Y2. The axes of rotation Y1-Y1 and Y2-Y2 are substantially parallel to each other, and the axis of rotation Y2-Y2 is located above the axis of rotation Y1-Y1. The rotational locking element 123 is rotatably mounted on the rotating base 121 and can be switched between the rotationally unlocked position and the rotationally locked position.

[0126] As in the Fig. 17 and Fig. As shown in Figure 20, the rotary locking element 123 is provided with a pivot hole 1234. A pivot shaft (not shown) extends through the pivot hole 1234 and is connected to the pair of side walls 1213 of the rotary base 121. The pivot axis can be a projection arranged on the side wall of the rotary base 121, a pin connected to the side wall of the rotary base 121, or the like. The pivot axis about which the rotary locking element 123 rotates relative to the rotary base 121 is RR. The pivot axis RR is substantially parallel to the axis of rotation Y1-Y1 or the axis of rotation Y2-Y2. The rotary locking element 123 is provided with a hook section 1238. The hook section 1238 forms an engagement recess 1231. The first rotary arm 122a is provided with an engagement projection 1221.When the rotational locking element 123 is in the rotationally locked position, the engagement projection 1221 engages with the engagement recess 1231. When the rotational locking element 123 is in the rotationally unlocked position, the engagement projection 1221 is disengaged from the engagement recess 1231. In some embodiments, the rotational locking element 123 is provided with the engagement recess 1231 on a side facing the first rotational arm 122a. The engagement projection 1221 is formed at the end of the first rotational arm 122a. The first rotational arm 122a is further provided with an engagement surface 1222. When the rotation locking element 123 is in the rotationally locked position, the end of the first rotation arm 122a is received in the engagement recess 1231, and the engagement surface 1222 can rest against a side wall of the engagement recess 1231.The arrangement of the engagement surface 1222 increases the contact area between the first rotating arm 122a and the engagement recess 1231, allowing the first rotating arm 122a and the rotating locking element 123 to engage more firmly with each other. As shown in the... Fig. 17, Fig. 18 to Fig. As shown in Figure 19, the engagement surface 1222 comprises a concave surface formed by a recess in a side surface of the end of the first rotating arm 122a. In some embodiments, the hook section 1238 of the rotating locking element 123 is further provided with a wedge-shaped surface 1239. When the rotating connection assembly 12 is disengaged from the Fig. 19 shown unlock state in the in Fig. When the locking state shown in Figure 17 changes, the end of the first rotating arm 122a presses against the wedge-shaped surface 1239 to rotate the rotating locking element 123 so that the end of the first rotating arm 122a can engage in the engagement recess 1231. According to the mounting connection assembly 10 in the third embodiment of the present application, the rotating locking element 123 is pivotably arranged on the rotating base 121 to switch the rotating locking element 123 between the rotationally locked position and the rotationally unlocked position, thereby limiting or allowing the rotation of the first rotating arm 122a relative to the rotating base 121.

[0127] In some embodiments, such as in Fig. As shown in Figure 17, the rotary connection assembly 12 is provided with two first rotary arms 122a, two second rotary arms 122b, and two rotary locking elements 123. The two first rotary arms 122a are pivotably connected to the rotary base 121 at their mutually facing ends. The two rotary locking elements 123 are designed to engage with the respective first rotary arms 122a to limit or enable the rotation of the first rotary arms 122a. The two rotary locking elements 123 are drivenly connected to each other. In particular, each of the two rotary locking elements 123 is provided with a plurality of interlocking teeth 1232 that can be engaged with each other.The interlocking teeth 1232 are in engagement with each other, so that when one of the rotary locking elements 123 rotates, another of the rotary locking elements 123 can be driven to rotate synchronously, and the two rotary locking elements 123 can switch synchronously between the rotationally locked position and the rotationally unlocked position.

[0128] As in the Fig. 17, Fig. 18 to Fig. As shown in Figure 19, the rotary connection assembly 12 further comprises a rotary return element 124. The rotary return element 124 biases one of the rotating locking elements 123 so that it rotates in the direction of the rotationally locked position and, via the interlocking teeth 1232, drives another of the rotating locking elements 123 to also rotate in the direction of the rotationally locked position. The rotary return element 124 is, for example, a torsion spring. The rotary return element 124 is mounted on the pivot shaft of one of the rotary locking elements 123. In addition, one end of the rotary return element 124 abuts the rotary locking element 123, and another end of the rotary return element 124 abuts the pin shaft (not shown) of the first rotary arm 122a.It should be noted that in this embodiment only one of the rotary locking elements 123 is provided with the rotary return element 124, whereas in other embodiments two rotary locking elements 123 may each be provided with the rotary return element 124, which is not limited in the present application.

[0129] In the Fig. 16, Fig. 20 and Fig. Figure 21 schematically shows an operating element 125 according to the third embodiment of the present application. The rotary connection assembly 12 is provided with the operating element 125. The operating element 125 is rotatably arranged on the rotary base 121 and is connected to the rotary locking element 123 in a driven manner in order to drive the rotary locking element 123 to switch between the rotationally locked position and the rotationally unlocked position. In this embodiment, one operating element 125 is provided.The control element 125 is connected to one of the rotary locking elements 123 in a driven manner to enable this rotary locking element 123 to be driven to rotate, and another of the rotary locking elements 123 to be driven to rotate synchronously, by the interlocking between the interlocking teeth 1232 of the two rotary locking elements 123 when the control element 125 is actuated to rotate, thereby realizing a synchronous switching of the two rotary locking elements 123 between the rotationally locked position and the rotationally unlocked position.

[0130] In one embodiment as described in the Fig. 20 and Fig. As shown in Figure 21, one of the rotational locking elements 123 is provided with a pivot projection 1235. The pivot projection 1235 has a concave section 1236. The operating element 125 is provided with a connecting pin 1251. The connecting pin 1251 has a pivot recess 1252 suitable for receiving the pivot projection 1235. The pivot recess 1252 has a convex section 1253 suitable for engaging with the concave section 1236. The convex section 1253 extends inwards from a side wall of the pivot recess 1252. Several convex sections 1253 are provided. The multiple convex sections 1253 are evenly distributed on the side wall of the pivot recess 1252. Several concave sections 1236 are provided. The number of concave sections 1236 is greater than or equal to the number of convex sections 1253.The side wall of the rotation base 121 is provided with a through-hole 1215. The pivot projection 1235 can extend through the through-hole 1215 and be connected to the operating element 125. In other embodiments, the connecting pin 1251 can extend through the through-hole 1215 and be connected to the rotation locking element 123. As in the . Fig. 20 and Fig. As shown in Figure 21, the pivot projection 1235 is at least partially received in the pivot recess 1252. The convex section 1253 engages with the concave section 1236 so that the control element 125 can drive the rotational locking element 123 to rotate when the control element 125 rotates. To prevent the control element 125 from separating from the rotational locking element 123, the rotational locking element 123 and the control element 125 are additionally connected by a fastening element (not shown). The fastening element can extend through the central through-holes of both the pivot projection 1235 and the pivot recess 1252. The fastening element can be a screw, a rivet, or the like.

[0131] According to the mounting connection structure 1 in this embodiment, the operating element 125 is actuated to rotate one of the rotary locking elements 123 and to rotate another of the rotary locking elements 123 by engaging between the interlocking teeth 1232, thereby achieving a synchronous switching of the two rotary locking elements 123 between the rotationally unlocked position and the rotationally locked position. This provides a mounting connection structure 1 that is simple in design and easy to operate.

[0132] Fig. Figure 22 is a schematic view of a child carrier according to the third embodiment of the present application. The child carrier comprises a bed frame 1000 and an enclosure (not shown). The enclosure may be made of fabric. The enclosure is connected to the bed frame 1000 to define a receiving space for the child carrier, and a child may sleep or play in the receiving space. The bed frame 1000 comprises the armrest frame 100 and several support legs 200 configured to support the armrest frame 100. The armrest frame 100 comprises a pair of first armrest frames 110 and a pair of second armrest frames 120 adjoining the first armrest frames 110. The child carrier in this embodiment has at least the following configurations, which differ from the child carriers in the first and second embodiments.

[0133] As in Fig. As shown in Figure 22, the bed frame 1000 is provided with the mounting connection assembly 10. The mounting connection assembly 10 comprises several rotation connection assemblies 12. The several rotation connection assemblies 12 each serve as first armrest frames 110 and second armrest frames 120. In particular, the two first swivel arms 102a and the two second swivel arms 102b of each first armrest frame 110 correspond to the two first rotation arms 122a and the two second rotation arms 122b of the rotation connection assembly 12. The connection base 101 of each first armrest frame 110 corresponds to the rotation base 121 of the rotation connection assembly 12.Since the first rotation arm 122a and the second rotation arm 122b are both connected to the same corner connecting element 130 of the armrest frame 100 on the same side of the rotation base 121, the rotation of the first rotation arm 122a is limited relative to the rotation base 121 when the rotation connection assembly 12 is in the locked state, and thus the rotation of the second rotation arm 122b relative to the rotation base 121 is also limited. Two sets of first pivot arms 102a and second pivot arms 102b of each second armrest frame 120 correspond to two sets of rotation arms 122 (i.e., the first rotation arms 122a and the second rotation arms 122b) of the rotation connection assembly 12. The connection base 101 of each second armrest frame 120 serves as the rotation base 121 of the rotation connection assembly 12. According to the third embodiment of the present application, a mounting connection structure 1 is further provided.The mounting connection structure 1 comprises several mounting connection assemblies 10, corner connecting elements 130, support legs 200, and several connecting rods 140. The several mounting connection assemblies 10 are connected to the corner connecting element 130. The support leg 200 is connected to the corner connecting element 130. The at least one pivot arm 102a / 102b of each mounting connection assembly 10 is connected to a sliding structure via the connecting rod 104, such that when the at least one pivot arm of one of the mounting connection assemblies 10 rotates, the at least one pivot arm of another mounting connection assembly 10 is driven to rotate by the connecting rod 140 and a sliding structure. In this embodiment, the several mounting connection assemblies 10 are adjacent to the first armrest frame 110 and the second armrest frame 120, respectively. The sliding structure comprises the sliding element 400, which is arranged to slide on the support leg 200.The first armrest frame 110 and the second armrest frame 120 are connected to the same sliding element 400 via their respective connecting rods 140. In other embodiments not shown, the sliding structure may, for example, comprise a sliding groove and a sliding pin extending through the sliding groove. The first armrest frame 110 and the second armrest frame 120 are connected to the same sliding element 400 via their respective connecting rods 140, which is not limited in the present application.

[0134] To fold the child carrier, the rotatable control element 125 must be turned. Since the two rotational locking elements 123 do not lock or unlock along the same direction of rotation, the actuation of the control element 125 is determined by the rotational locking element 123 connected to the control element 125. In this embodiment, with reference to the Fig. 16 and Fig. 20 an example is given in which the operating element 125 is connected to the rotary locking element 123 on the left side of Fig. 16 is connected, wherein a force in a counterclockwise direction is exerted on the control element 125 of the rotation connection assembly 12, which exerts a counterclockwise force on the pair of first armrest frames 110 (or the second armrest frames 120) to rotate this control element 125 counterclockwise and to rotate one of the rotation locking elements 123 counterclockwise, and furthermore, another of the rotation locking elements 123 is rotated clockwise by the engagement of the interlocking teeth 1232 of the two rotation locking elements 123, such that the engagement recesses 1231 of the two rotation locking elements 123 each rotate in a direction away from the respective first rotation arm 122a.The control element 125 is continuously rotated to cause the engagement recesses 1231 of the two rotational locking elements 123 to be completely separated from the respective ends of the first rotational arms 122a, i.e., both rotational locking elements 123 are in the rotationally unlocked position. In this case, the rotational connection assembly 12, which is located on the second armrest frame 120 (or the first armrest frame 110), is still in the locked state, and the sliding element 400 cannot move downwards (i.e., in a direction away from the corner connection element 130) or can only move a very small distance.Therefore, the two first pivot arms 102a and the two second pivot arms 102b of the first armrest frame 110 (or the second armrest frame 120) can only be slightly folded together, so that the ends of the first rotation arms 122a, which are arranged on the first armrest frame 110 (or the second armrest frame 120), can each limit the two rotation locking elements 123 to the rotationally unlocked position. Then, similarly, the operating element 125 of the rotational connection assembly 12, which is arranged on the other pair of second armrest frames 120 (or first armrest frames 110), is rotated, thereby rotating the two rotation locking elements 123 of the rotational connection assembly 12 to the rotationally unlocked position.In this case, the first armrest frame 110 and the second armrest frame 120 can be folded simultaneously, and the connecting rod 140 drives the sliding element 400 to move downwards, so that the multiple support legs 200 can move towards each other simultaneously along the direction D1 and the direction D2, thereby making the folding of the child carrier possible.

[0135] In this embodiment, the first rotating arm 122a does not interfere with the rotating locking element 123 after folding, so that the rotating locking element 123 rotates from the rotationally unlocked position to the rotationally locked position under the elastic restoring force of the rotating restoring element 124 when the child carrier is in the folded state.

[0136] When the child carrier is to be unfolded, the first two rotation arms 122a and the second two rotation arms 122b of one of the first armrest frames 110 (or the second armrest frame 120) are removed from the in Fig. 19 shown folded position in the in Fig. The unfolded position shown in Figure 17 is rotated, and the sliding element 400 is driven by the connecting rod to move upwards (i.e., towards the corner connecting element 130), so that another connecting rod 140, which is connected to this sliding element 400, can drive the two first rotating arms 122a and the two second rotating arms 122b of the second armrest frame 120 (or the first armrest frame 110) to rotate from the folded position to the unfolded position, so that the two first armrest frames 110 and the two second armrest frames 120 of the armrest frame 100 of the child carrier can be moved synchronously from the folded state to the unfolded state. When the two first rotating arms 122a and the two second rotating arms 122b move from the position shown in Figure 17, the sliding element 400 is driven by the connecting rod to move upwards (i.e., towards the corner connecting element 130), the sliding element 400 is driven by the connecting rod to move upwards (i.e., towards the corner connecting element 130), so that a further connecting rod 140, which is connected to this sliding element 400, can drive the two first rotating arms 122a and the two second rotating arms 122b of the second armrest frame 120 (or the first armrest frame 110) to rotate from the folded position to the unfolded position, the two first armrest frames 110 and the two second armrest frames 120 of the armrest frame 100 of the child carrier can be moved synchronously from the folded state to the unfolded state. Fig. 19 shown folded position in the in Fig. When the two first rotating arms 122a are turned to the unfolded position shown in Figure 17, the ends of the two first rotating arms 122a press against the respective wedge-shaped surfaces 1239 of the rotating locking elements 123, causing the two rotating locking elements 123 to each rotate from the rotationally locked position to the rotationally unlocked position. When the two first rotating arms 122a and the two second rotating arms 122b each move into the position shown in Figure 17, the ends of the first rotating arms 122a press against the respective wedge-shaped surfaces 1239 of the rotating locking elements 123, causing the two rotating locking elements 123 to each rotate from the rotationally locked position to the rotationally unlocked position. Fig. Rotating the unfolded position shown in Figure 18, the end of the first rotation arm 122a is just separated from the wedge-shaped surface 1239 of the rotation locking element 123. In this case, the rotation locking element 123 is in the rotationally unlocked position. Under the elastic restoring force of the rotation restoring element 124, the rotation locking element 123 is released from the position shown in Figure 18. Fig. 18 shown rotationally unlocked position in the in Fig. The rotationally locked position shown in Figure 17 is rotated so that the end of each first rotational arm 122a engages in the engagement recess 1231 of the corresponding rotational locking element 123. In this way, the child carrier is unfolded.

[0137] According to a fourth embodiment of the present application, a mounting connection structure 1 and a child carrier comprising the mounting connection structure are provided.

[0138] The Fig. 23, Fig. 24, Fig. 25, Fig. 26, Fig. 27 to Fig. Figures 28 are schematic representations of the mounting connection structure 1 according to the fourth embodiment of the present application. The mounting connection structure 1 comprises two mounting connection assemblies 10 and the coupling element 20, which is connected to the two mounting connection assemblies 10 in a driven manner. The two mounting connection assemblies 10 are both rotary connection assemblies 12. The two rotary connection assemblies 12 are each a first rotary assembly 12a and a second rotary assembly 12b.

[0139] Each rotary connection assembly 12 comprises the rotary base 121, at least one first rotary arm 122a, at least one second rotary arm 122b, at least one rotary locking element 123, and the rotary return element 124, which is designed to pre-tension the rotary locking element 123 in the direction of the rotationally locked position. In this embodiment, each rotary connection assembly 12 is provided with two first rotary arms 122a, two second rotary arms 122b, and two rotary locking elements 123. The two first rotary arms 122a act on different rotary locking elements 123. Each rotary locking element 123 is provided with the engagement recess 1231. The engagement projections 1221 are formed at the opposing ends of the two first rotary arms 122a.When the rotational locking element 123 is in the rotationally locked position, the rotational connection assembly 12 is in the locked state, the engagement projections 1221 of the two first rotational arms 122a engage in the respective engagement recesses 1231 of the rotational locking elements 123, and thus the two first rotational arms 122a are prevented from rotating relative to the rotational base 121. When the rotational locking element 123 is in the rotationally unlocked position, the rotational connection assembly 12 is in the unlocked state, the two first rotational arms 122a are rotatable relative to the rotational base 121, and the two second rotational arms 122b are rotatable relative to the rotational base 121.

[0140] In one embodiment as in Fig. As shown in Figure 23, the two rotary locking elements 123 are a first rotary locking element 123a on the right side and a second rotary locking element 123b on the left side. The two rotary locking elements 123 are drive-connected to each other. In particular, the two rotary locking elements 123 are each provided with interlocking teeth 1232. The two rotary locking elements 123 engage with each other via the interlocking teeth 1232, so that the rotation of one of the rotary locking elements 123 can drive the other of the rotary locking elements 123 to a synchronous rotation, so that the two rotary locking elements 123 can switch synchronously between the rotationally locked position and the rotationally unlocked position. The rotation return element 124 is, for example, a torsion spring. A rotation return element 124 is provided.The rotation reset element 124 abuts one of the rotation locking elements 123, for example the first rotation locking element 123a.

[0141] The mounting connection structure 1 in this embodiment has at least the following configurations, which differ from the mounting connection structure 1 in the third embodiment.

[0142] As in the Fig. 23 to Fig. As shown in Figure 24, the first rotating assembly 12a is provided with the control element 125, while the second rotating assembly 12b is not provided with the control element 125. The control element 125 is rotatably arranged on the rotating base 121 of the first rotating assembly 12a and is connected to the rotating locking element 123 in a driven manner to drive the rotating locking element 123 to switch between the rotationally locked position and the rotationally unlocked position.The operating element 125 is connected to one of the rotary locking elements 123 of the first rotary assembly 12a in a driven manner, so that this rotary locking element 123 can be driven to rotate, and another of the rotary locking elements 123 can be rotated synchronously by the interlocking teeth 1232 of the two rotary locking elements 123 when the operating element 125 is actuated to rotate, thereby achieving a synchronous switching of the two rotary locking elements 123 between the rotationally locked position and the rotationally unlocked position. It is understood that in some other embodiments not shown, the rotary connection assembly 12 may be provided with only one rotary locking element 123, which is not limited in the present application.

[0143] As in Fig. As shown in Figure 23, the two ends of the coupling element 20 are each connected to the rotation locking elements 123 of the two rotation connection assemblies 12, so that the rotation locking element 123 of the first rotation assembly 12a can be set in rotation by the coupling element 20 and the rotation locking element 123 of the second rotation assembly 12b can be set in rotation by the coupling element 20 when the operating element 125 is actuated to rotate, so that the rotation locking elements 123 of the two rotation connection assemblies 12 rotate synchronously and thereby a synchronous switching of the rotation locking elements 123 of the two rotation connection assemblies 12 between the rotationally locked position and the rotationally unlocked position is realized.

[0144] Fig. Figure 29 is a schematic view of the coupling element 20 according to the fourth embodiment of the present application. The coupling element 20 comprises: the pull cable 21; the first locking end 22a and the second locking end 22b, each arranged at two ends of the pull cable 21; and a sheath 23 that encloses the pull cable 21. The first locking end 22a and the second locking end 22b have substantially the same structure. The first locking end 22a and the second locking end 22b are substantially cylindrical in shape. The two ends of the pull cable 21 are each connected to a side face of the first locking end 22a and a side face of the second locking end 22b. The sheath 23 is arranged outside the pull cable 21. At least a portion of the pull cable 21, the first locking end 22a, and the second locking end 22b are all extended and project from the sheath 23.One end of the sheath 23 is provided with the first connecting end 24a, which is designed to allow the passage of the pull rope 21d, and another end of the sheath 23 is provided with the second connecting end 24b, which is designed to allow the passage of the pull rope 21d. The first connecting end 24a is limited by the rotation base 121 of the first rotating assembly 12a, and the second connecting end 24b is limited by the rotation base 121 of the second rotating connecting assembly 12b, in order to firmly connect the two ends of the sheath 23 to the rotation bases 121 of the two rotating connecting assemblies 12. In this way, the coupling element 20 can be supported, and the ends of the sheath 23 can be fixed, thus preventing the movement of the sheath 23 from impeding the rotation of the rotating locking element 123.

[0145] In one embodiment as described in the Fig. 21, Fig. 27 and Fig. As shown in Figure 28, the rotation base 121 of the rotation connection assembly 12 is provided with a connecting frame 129. The pull cable 21 of the coupling element 20 can extend through the connecting frame 129. The connecting frame 129 is located in the receiving groove 1212 of the rotation base 121. The connecting frame 129 is formed by shearing off a portion of the side wall 1213 of the pivot base 121 and bending this portion inwards (i.e., towards the receiving groove). The connecting frame 129 and the rotation base 121 are formed in one piece, which improves the strength of the connection between the connecting frame 129 and the rotation base 121 and reduces manufacturing costs.It is understood that in other embodiments the connecting frame 129 may be a component that is attached, for example, by welding, riveting, gluing or the like to the side wall 1213 of the rotating base 121, which is not limited in the present application. With reference to the . Fig. 23 and Fig. 27 The rotation base 121 is provided with two connecting frames 129, a first connecting frame 129a located adjacent to the first rotation locking element 123a, and a second connecting frame 129b located adjacent to the second rotation locking element 123b. The two connecting frames 129 are located next to a side of the rotation locking element 123 that is away from the engagement recess 1231. The first connecting end 24a of the coupling element 20 engages with the second connecting frame 129b of the first rotation assembly 12a, and the second connecting end 24b of the coupling element 20 engages with the first connecting frame 129a of the second rotation assembly 12b. It is understood that in some other embodiments the first rotating assembly 12a may only be provided with one connecting frame 129, i.e. only with the second connecting frame 129b.The second rotating assembly 12b can also only be provided with a connecting frame 129, i.e., only with the first connecting frame 129a. With reference to the . Fig. 23 and Fig. In this embodiment, the rotation reset element 124 is mounted on a pivot shaft of the first rotation locking element 123a; one end of the rotation reset element 124 abuts the first rotation locking element 123a, and another end of the rotation reset element 124 engages with the first connecting frame 129a. Alternatively, the rotation reset element 124 can be mounted on a pivot shaft of the second rotation locking element 123b; one end of the rotation reset element 124 abuts the second rotation locking element 123b, and another end of the rotation reset element 124 engages with the second connecting frame 129b. It should be noted that one end of the connecting frame 129 is open in this embodiment.To prevent the end of the rotational return element 124 from slipping out of the end piece of the connecting frame 129 and falling down, the connecting frames 129 can be arranged on the two side walls 1213 of the rotational base 121 so that they are opposite each other, so that the ends of the rotational return element 124 can be confined between the two connecting frames 129 (as shown in the . Fig. 27 and Fig. 28). In other embodiments, the two connecting frames 129 can be used to limit the ends of the rotational return element 124, and furthermore, a stop structure (e.g., a hook-shaped stop structure) can be arranged at the end point of the connecting frame 129 to prevent the end of the rotational return element 124 from slipping out of the connecting frame 129. In addition, in other embodiments (see Fig. 17) Alternatively, one end of the rotation reset element 124 against the first rotation locking element 123a and another end of the rotation reset element 124 against the pin shaft (not shown) of the first rotation arm 122a.

[0146] Fig. Figure 30 is a schematic representation of the first rotational locking element 123a of the rotational connection assembly 12 according to the fourth embodiment of the present application. With reference to the Fig. 23 and Fig. 29 The first rotary locking elements 123a of the two rotary connection assemblies 12 are each provided with an engagement groove 1233. The first locking end 22a and the second locking end 22b engage with the respective engagement grooves 1233. In particular, the engagement groove 1233 is arranged on a side of the rotary locking element 123 that is away from the engagement recess 1231. The first rotary locking element 123a of the first rotary assembly 12a is provided with the engagement groove 1233, and the first rotary locking element 123a of the second rotary assembly 12b is provided with the engagement groove 123. The first locking end 22a engages with the engagement groove 1233 of the first rotary locking element 123a of the first rotary assembly 12a.and the second locking end 22b engages with the engagement groove 1233 of the first rotary locking element 123a of the second rotary assembly 12b. The first locking end 22a and the second locking end 22b have the same structure. The engagement groove 1233 comprises a first groove section 12331 and a second groove section 12332, through which the pull cable 21 has extended. The first groove section 12331 is connected to the second groove section 12332. The direction of extension of the first groove section 12331 forms an angle with the direction of extension of the second groove section 12332. The first locking end 22a or the second locking end 22b is designed such thatthat it can engage with the first groove section 12331. In this embodiment, the second rotational locking elements 123b of the two rotational connection assemblies 12 are each not provided with the engagement groove 1233. In some embodiments, the second rotational locking element 123b of the first rotational assembly 12a is provided with a retaining groove 1237. The two ends of the retaining groove 1237 are open ends to allow the passage of the pull cable 21. When the first locking end 22a or the second locking end 22b engages with the respective rotational locking elements 123, the pull cable 21 extends successively through the engagement groove 1233 of the first rotational locking element 123a of the first rotational assembly 12a.The retaining groove 1237 of the second rotary locking element 123b of the first rotary assembly 12a and the engagement groove 1233 of the first rotary locking element 123a of the second rotary assembly 12b. The operating element 125 is connected to the second rotary locking element 123b of the first rotary assembly 12a in a driven manner. The second rotary locking element 123b of the first rotary assembly 12a is driven to rotate by the operating element 125, the rotary locking element 123a of the first rotary assembly 12a is driven by the engagement between the two rotary locking elements 123 of the first rotary assembly 12a, and furthermore, the first rotary locking element 123a of the second rotary assembly 12b is driven by the coupling element 20.by which the second rotational locking element 123b of the second rotational assembly 12b is set into rotation by the interlocking of the two rotational locking elements 123 of the second rotational assembly 12b, so that the rotational locking elements 123 of the two rotational connection assemblies 12 can rotate synchronously and the rotational locking elements 123 of the two rotational connection assemblies 12 can switch synchronously between the rotationally locked position and the rotationally unlocked position.

[0147] According to the mounting connection structure 1 in this embodiment, the two rotation connection assemblies 12 are driven by the coupling element 20 to switch synchronously between the locking state and the unlocking state, which is simple in structure and easy to operate.

[0148] Fig. Figure 31 is a schematic view of a child carrier according to the fourth embodiment of the present application. The child carrier comprises a bed frame 1000 and an enclosure (not shown). The enclosure may be made of fabric. The enclosure is connected to the bed frame 1000 to define a receiving space for the child carrier, and a child may sleep or play in the receiving space. The bed frame 1000 comprises several armrest frames 100 and several support legs 200 configured to support the armrest frames 100. The several armrest frames 100 comprise a pair of first armrest frames 110 and a pair of second armrest frames 120 adjoining the first armrest frames 110. The child carrier in this embodiment has at least the following configurations, which differ from the child carriers in the first, second, and third embodiments.

[0149] As in Fig. As shown in Figure 31, the bed frame 1000 is provided with the bracket connection assembly 10 of the bracket connection structure 1 in the fourth embodiment. The bracket connection assembly 10 comprises the first rotational assembly 12a and the second rotational assembly 12b. The first rotational assembly 12a serves as the first armrest frame 110, and the second rotational assembly 12b serves as the second armrest frame 120. In particular, two sets of first pivot arms 102a and second pivot arms 102b of the first armrest frame 110 each correspond to two sets of rotational arms 122 (i.e., the first rotational arms 122a and the second rotational arms 122b) of the first rotational assembly 12a. The connection base 101 of each first armrest frame 110 corresponds to the rotational base 121 of the first rotational assembly 12a. Two sets of first swivel arms 102a and second swivel arms 102b of the second armrest frame 120 each correspond to two sets of rotation arms 122 (i.e.the first rotating arms 122a and the second rotating arms 122b) of the second rotating assembly 12b. The connecting base 101 of each second armrest frame 120 corresponds to the rotating base 121 of the second rotating assembly 12b. In this embodiment, the mounting connection structure 11 further comprises the corner connecting elements 130, the support legs 200, and the connecting rods 140. The first armrest frame 110 and the second armrest frame 120 are connected to the corner connecting element 130. The support leg 200 is connected to the corner connecting element 130. The support leg 200 is provided with the sliding element 400. The first armrest frame 110 and the second armrest frame 120 are connected to the same sliding element 400 via the respective connecting rods 140. The first armrest frame 110 and the second armrest frame 120 are connected to each other via the coupling element 20.

[0150] In contrast to the third embodiment, in this embodiment, if the child carrier is to be folded, only the operating element 125 of the first rotation assembly 12a, which is arranged on the first armrest frame 110, needs to be actuated, and then the two rotation locking elements 123 of the first rotation assembly 12a and the two rotation locking elements 123 of the second rotation assembly 12b can be rotated synchronously from the rotationally locked position to the rotationally unlocked position via the coupling element 20, thereby folding the child carrier.

[0151] In the fourth embodiment, the unfolding process of the child carrier is essentially the same as in the third embodiment, and details thereof are not described again here.

[0152] According to a fifth embodiment of the present application, a mounting connection structure 1 and a child carrier comprising the mounting connection structure 1 are provided.

[0153] The Fig. 32, Fig. 33, Fig. 34, Fig. 35, Fig. 36 to Fig. Figure 37 are schematic representations of the mounting connection structure 1 according to the fifth embodiment of the present application. The mounting connection structure 1 comprises two mounting connection assemblies 10 and the coupling element 20, which is connected between the two mounting connection assemblies 10. The two mounting connection assemblies 10 comprise the movable connection assembly 11 and the rotating connection assembly 12. The movable connection assembly 11 has essentially the same configuration as the first movable assembly 11a in the second embodiment. The rotating connection assembly 12 has the same configuration as the second rotating assembly 12b in the fourth embodiment.

[0154] As in the Fig. 33, Fig. 35 and Fig. As shown in Figure 37, the movable locking element 11 comprises: the pivot base 111; two movable locking elements 113 attached to the pivot base 111; and two sets of first pivot arms 112a and two sets of second pivot arms 112b pivotally connected to the pivot base 111. The pivot base 111 is provided with a sliding groove 1111. The movable locking element 113 is inserted into the sliding groove 1111 via a connecting pin (not shown). The connecting pin is, for example, a rivet, a screw, a bolt, or the like. In particular, the movable locking element 113 is provided with a plurality of connecting holes 1134. The connecting pin extends through the sliding groove 1111 and the connecting hole 1134 to movably connect the movable locking element 113 and the pivot base 111.The pivot base 111 and the movable locking element 113 are connected to each other via the connecting pin, so that the connection between the pivot base 111 and the movable locking element 113 is stronger and more reliable, which allows for easy disassembly and assembly. It is understood that in some other embodiments not shown, the locking element 103 may be provided with the sliding groove 1111, and the pivot base 111 accordingly with the connecting projection 1133 (similar to the connecting projection 1133 in [reference]). Fig. 13) or may be provided with the connecting pin and the connecting projection 1133 or the connecting pin is fitted into the sliding groove 1111 and can move along the sliding groove 1111, which is not limited in the present application.

[0155] As in the Fig. 32 to Fig. As shown in Figure 33, one end of the coupling element 20 is connected to the second movable locking element 113b of the movable connecting assembly 11, and another end of the coupling element 20 is connected to the first rotary locking element 123a of the rotary connecting assembly 12. When the second movable locking element 113b moves from the motion-locked position to the motion-unlocked position, the first rotatable locking element 123a is driven by the coupling element 20 to rotate into the rotation-unlocked position, and the second rotatable locking element 123b is further driven by the interlocking of the teeth 1232 between the two rotary locking elements 123 to rotate into the rotation-unlocked position, thereby achieving a synchronous switching of the movable connecting assembly 11 and the rotary connecting assembly 12 from the locked state to the unlocked state.

[0156] With reference to Fig. 32 The rotational return element 124 is pushed onto the pivot shaft of the first rotational locking element 123a. One end of the rotational return element 124 abuts the first rotational locking element 123a, and another end of the rotational return element 124 abuts the pin shaft (not shown) of the first rotational arm 122a. In other embodiments (see Fig. 27) Alternatively, one end of the rotation reset element 124 can be in contact with the first rotation locking element 123a and another end of the rotation reset element 124 can be engaged with the first connecting frame 129a.

[0157] Fig. Figure 38 is a schematic view of the coupling element 20 according to the fifth embodiment of the present application. The coupling element 20 comprises: the pull cable 21; the sheath 23, which is fitted over the pull cable 21; the first locking end 22a and the second locking end 22b, each connected to the two ends of the pull cable 21; and the first connecting end 24a and the second connecting end 24b, each arranged at the two ends of the sheath 23. In this embodiment, the first locking end 22a is substantially in the form of a post, and the pull cable 21 is connected to an end face of the first locking end 22a. The second locking end 22b is substantially in the form of a post, and the pull cable 21 is connected to a side face of the second locking end 22b.

[0158] In one embodiment as described in the Fig. 32 to Fig. As shown in Figure 33, the pivot base 111 of the movable connecting assembly 11 is provided with two fixed frames 119, namely the first fixed frame 119a and the second fixed frame 119b. Each fixed frame 119 is formed by cutting off a portion of one of the two side walls 1115 of the pivot base 111 and bending this portion inwards. The rotation base 121 of the rotating connecting assembly 12 is provided with two connecting frames 129, namely the first connecting frame 129a and the second connecting frame 129b. The first locking end 22a engages with the second connecting frame 129b, and the second locking end 22b engages with the first connecting frame 129a.

[0159] As in the Fig. 32, Fig. 33, Fig. 34, Fig. 35, Fig. 36, Fig. 37, Fig. 38 to Fig. As shown in Figure 39, the second movable locking element 113b of the movable connecting assembly 11 is provided with the engagement hole 1137. The engagement hole 1137 is provided with an abutment section 1138. The first locking end 22a engages with the abutment section 1138 of the engagement hole 1137. The first rotary locking element 123a of the rotary connecting assembly 12 is provided with the engagement groove 1233. The second locking end 22b engages with the engagement groove 1233.

[0160] Fig. Figure 40 is a schematic representation of the child carrier according to the fifth embodiment of the present application. The child carrier comprises a bed frame 1000 and an enclosure (not shown). The enclosure may be made of fabric. The enclosure is connected to the bed frame 1000 to define a receiving space for the child carrier, and a child may sleep or play in the receiving space. The bed frame 1000 comprises an armrest frame 100 and a plurality of support legs 200 configured to support the armrest frame 100. The armrest frame 100 comprises a pair of first armrest frames 110 and a pair of second armrest frames 120 adjoining the first armrest frames 110. The child carrier in this embodiment has at least the following configurations, which differ from the child carriers in the first, second, third, and fourth embodiments.

[0161] As in Fig. As shown in Figure 40, the bed frame 1000 is provided with the mounting connection assembly 10 of the mounting connection structure 1 in the fifth embodiment. The mounting connection assembly 10 comprises the movable connection assembly 11 and the rotating connection assembly 12. The movable connection assembly 11 serves as the first armrest frame 110, and the rotating connection assembly 12 serves as the second armrest frame 120. In particular, two sets of first pivot arms 102a and two sets of second pivot arms 102b of each first armrest frame 110 correspond to two sets of swivel arms 112 (i.e., the first swivel arms 112a and the second swivel arms 112b) of the movable connection assembly 11. The connection base 101 of the first armrest frame 110 corresponds to the rotating base 111 of the movable connection assembly 11.Two sets of first pivot arms 102a and two sets of second pivot arms 102b of the second armrest frame 120 each correspond to two sets of rotating arms 122 (i.e., the first rotating arms 122a and the second rotating arms 122b) of the second rotating assembly 12b. The connecting base 101 of each second armrest frame 120 corresponds to the rotating base 121 of the rotating connecting assembly 12. In this embodiment, the support connecting structure 1 further comprises corner connecting elements 130, support legs 200, and connecting rods 140. The first armrest frame 110 and the second armrest frame 120 are connected by the corner connecting element 130. The support leg 200 is connected to the corner connecting element 130. The support leg 200 is provided with the sliding element 400. The first armrest frame 110 and the second armrest frame 120 are connected to the same sliding element 400 via the respective connecting rods 140.The first armrest frame 110 and the second armrest frame 120 are connected to each other via the coupling element 20.

[0162] In the fifth embodiment, the folding and unfolding process of the child carrier is similar to the folding and unfolding process of the child carrier in the second embodiment, which will not be described again in detail here.

[0163] According to a sixth embodiment of the present application, a mounting connection structure 1 and a child carrier with the mounting connection structure 1 are provided. The mounting connection structure 1 comprises two mounting connection assemblies 10 and the coupling element 20, which is connected between the two mounting connection assemblies 10. The two mounting connection assemblies 10 comprise the movable connection assembly 11 and the rotating connection assembly 12. One configuration of the rotating connection assembly 12 can be the same as that of the first rotating assembly 12a in the fourth embodiment, and one configuration of the movable connection assembly 11 can be the same as that of the second movable assembly 11b in the second embodiment. Details thereof are not described again here.

[0164] The child carrier according to the sixth embodiment of the present application has at least the following configurations, which differ from those of the child carrier in the fifth embodiment. In this embodiment, the movable connecting assembly 11 is not provided with the operating section 1153. The movable connecting assembly 11 is arranged on the second armrest frame 120 of the child carrier. The rotating connecting assembly 12 is provided with the operating element 125. The rotating connecting assembly 12 is arranged on the first armrest frame 110 of the child carrier.

[0165] In the sixth embodiment, the folding and unfolding process of the child carrier is similar to the folding and unfolding process of the child carrier in the fourth embodiment, which will not be described again in detail here.

[0166] It should be noted that in the embodiment described above, the movable connecting assembly 11 moves between the unlocked position and the movable locked position along a straight line, in particular along a horizontal straight line. In other embodiments, the movable connecting assembly 11 may move along an inclined straight line. In other embodiments, the movable connecting assembly 11 may move between the unlocked position and the movable locked position along an arc or a line of a different shape, which is not limited here.

[0167] According to a seventh embodiment of the present application, a mounting connection structure 1 and a child carrier with the mounting connection structure 1 are provided.

[0168] Fig. Figure 41 is a schematic view of the child carrier according to the seventh embodiment of the present application. Fig. 42, Fig. 43 to Fig. Figure 44 are schematic views of the mounting connection structure 10 according to the seventh embodiment of the present application. This embodiment has essentially at least the following configurations, which differ from the first, second, third, fourth, fifth and sixth embodiments.

[0169] As in Fig. As shown in Figure 41, the child carrier comprises a bed frame 1000. The bed frame 1000 is provided with a mounting connection structure 1. The mounting connection structure 1 comprises at least one mounting connection assembly 10. In this embodiment, the mounting connection assembly 10 comprises the first rotating assembly 12a and the second rotating assembly 12b. The first rotating assembly 12a is drive-connected to the second rotating assembly 12b via the coupling element 20. The first rotating assembly 12a serves as the first armrest frame 110, and the second rotating assembly 12b serves as the second armrest frame 120. In some other embodiments not shown, the mounting connection structure 1 can also comprise the rotating connection assembly 12, which is not limited in the present application.For the sake of simplicity, a rotary connection assembly 12 (the second rotary assembly 12b) will be used as an example for the description below.

[0170] As in the Fig. 41 and Fig. As shown in Figure 42, the rotary connection assembly 12 comprises the rotary base 121, the first rotary arm 122a, the second rotary arm 122b, and the rotary locking element 123. The rotary locking element 123 serves as a locking element for the mounting connection assembly 10. The rotary locking element 123 is provided with the engagement recess 1231. The first rotary arm 122a is pivotably connected to the rotary base 121 via a pin shaft 128a (which may be, for example, a rivet, a screw, a bolt, or the like). The second rotary arm 122b is pivotably connected to the rotary base 121 via a pin shaft 128b. The first rotary arm 122a and the second rotary arm 122b each have an open position and a folded position.When the rotational locking element 123 is in the rotationally unlocked position, the rotational connection assembly 12 is in the unlocked state, the first rotational arm 122a is rotatable relative to the rotational base 121, and the second rotational arm 122b is rotatable relative to the rotational base 121. When the rotational locking element 123 is in the rotationally locked position, the rotational connection assembly 12 is in the locked state, and the first rotational arm 122a cannot rotate relative to the rotational base 121.

[0171] As in the Fig. 43, Fig. 44 to Fig. As shown in Figure 45, the first rotary arm 122a comprises a body rod 1224, an engagement rod 1225, and a telescopic return element 1226. The body rod 1224 is pivotably connected to the rotary base 121 via the pin shaft 128a. The body rod 1224 or the engagement rod 1225 is provided with an insertion cavity 12241, wherein the other of the body rod 1224 and the engagement rod 1225 is inserted into the insertion cavity 12241 and at least partially confined therein. The engagement rod 1225 can move relative to the body rod 1224 and assume an extended position and a retracted position. An end of the engagement rod 1225 located away from the body rod 1224 serves as an engagement projection 1221. In this embodiment, the body rod 1224 is provided with the insertion cavity 12241, and another end of the engagement rod 1225 located away from the engagement projection 1221 is inserted into the insertion cavity 12241.When the first rotary arm 122a is in the folded position, the engagement projection 1221 is disengaged from the engagement recess 1231, and the engagement rod 1225 is in the extended position. During the transition of the first rotary arm 122a from the folded position to the unfolded position, the rotary locking element 123 presses against the engagement projection 1221, causing the engagement rod 1225 to move from the extended position to the retracted position. When the first rotary arm 122a switches to the unfolded position, the engagement projection 1221 faces the engagement recess 1231, and the engagement rod 1225 moves from the retracted position to the extended position, thus engaging the engagement projection 1221 with the engagement recess 1231. When the engagement rod 1225 is in the extended position, the total length of the first rotating arm 122a (d.h. the sum of the length of the body rod 1224 and the length of the part of the engagement rod 1225 that protrudes from the body rod 1224) is greatest. When the engagement rod 1225 is in the retracted position, the total length of the first rotating arm 122a is shortest.

[0172] As in the Fig. 44 to Fig. As shown in Figure 45, the engagement rod 1225 is provided with a guide groove 12252. The direction of expansion of the guide groove 12252 is parallel to the direction of expansion of the insertion cavity 12241. The pin shaft 128a extends through the guide groove 12252 and is confined within it. This means that both the engagement rod 1225 and the body rod 1224 are pivotably connected to the rotation base 121 via the pin shaft 128a, and the engagement rod 1225 is movably inserted into the insertion cavity 12241. In this way, the engagement rod 1225, together with the body rod 1224, can rotate relative to the rotation base 121 and can also move between the extended and retracted positions relative to the body rod 1224.In other embodiments not shown, the body rod 1224 can be pivotably connected to the rotation base 121 via the pin shaft 128a, the engagement rod 1225 is not pivotably connected to the rotation base 121, and the engagement rod 1225 is movably inserted into the insertion cavity 12241 and is at least partially limited in the insertion cavity 12241 by another limiting structure, which is not limited in the present application.

[0173] As in Fig. As shown in Figure 45, several convex ribs 12257 are formed on an outer surface of the engagement rod 1225. The convex ribs 12257 can slide along the insertion cavity 12241. The convex ribs 12257 are in contact with an inner wall of the body rod 1224. Therefore, in this embodiment, the convex ribs 12257 are in contact with the inner wall of the body rod 1224, while the entire outer surface of the engagement rod 1225 is in contact with the inner wall of the body rod 1224, thereby reducing the friction between the engagement rod 1225 and the body rod 1224 and making the sliding smoother.

[0174] As in Fig. As shown in Figure 45, the end of the engagement rod 1225 furthest from the engagement projection 1221 is provided with a first insertion end 12253a and a second insertion end 12253b. The first insertion end 12253a is located above the second insertion end 12253b. The first insertion end 12253a and the second insertion end 12253b enclose an insertion opening 12254, which is connected to the guide groove 12252. The direction of expansion of the insertion opening 12254 is essentially parallel to the direction of expansion of the guide groove 12252. In this way, the pin shaft 128a can be easily inserted into the guide groove 12252. At least one of the first introduction ends 12253a and the second introduction end 12253b is provided with a limiting projection 12255.The engagement rod 1225 allows the pin shaft 128a to extend through the insertion opening 12254 into the guide groove 12252, and the limiting projection 12255 can bear against the pin shaft 128a to limit the separation of the guide groove 12252 from the pin shaft 128a, thereby limiting the engagement rod 1225 at least partially within the insertion cavity 12241 and preventing further separation of the engagement rod 1225 from the body rod 1224. The interaction between the insertion opening 12254 and the limiting projection 12255 allows the pin shaft 128a to easily engage in the guide groove 12252 of the engagement rod 1225, enabling quick assembly of the engagement rod 1225.

[0175] In this embodiment, the first insertion end 12253a and the second insertion end 12253b are each provided with the limiting projection 12255. The two limiting projections 12255 are rotationally symmetric and have the same structure. For the sake of simplicity, the structure of one of the limiting projections 12255 is used below as an example for illustration.

[0176] The limiting projection 12255 comprises an insertion section 12255a and a limiting hook section 12255b. The limiting hook section 12255b is connected to the insertion section 12255a and is located closer to the guide groove 12252 than the insertion section 12255a. The limiting hook section 12255b is designed to bear against the pin shaft 128a, thus preventing the guide groove 12252 from disengaging from the pin shaft 128a. The insertion section 12255a gradually widens from an end furthest from the limiting hook section 12255b to an end adjacent to the limiting hook section 12255b and has an inclined surface. In this way, the pin shaft 128a and the guide groove 12252 can mesh more smoothly via the insertion opening 12254, thus facilitating the assembly of the engagement rod 1225.In particular, the process of the engagement rod 1225 with the pin shaft 128a proceeds as follows: A surface of the insertion section 12255a of the limiting projection 12255 presses against the pin shaft 128a, causing the first insertion end 12253a and the second insertion end 12253b to deform elastically, so that the engagement rod 1225 can move in a direction parallel to the body rod 1224 into the insertion cavity 12241. When the engagement rod 1225 moves so that the limiting hook section 12255b rests against the pin shaft 128a, the first insertion end 12253a, the second insertion end 12253b, and the two limiting hook sections 12255b are elastically deformed under the pressure of the pin shaft 128a.The engagement rod 1225 is continuously moved in a direction parallel to the body rod 1224 into the insertion cavity 12241, and the limiting hook section 12255b passes the pin shaft 128a and is located on one side of the pin shaft 128a that is furthest from the engagement projection 1221. In this way, the pin shaft 128a is brought into engagement with the guide groove 12252.

[0177] As in the Fig. 43, Fig. 44 to Fig. As shown in Figure 45, a first end of the telescopic return element 1226 abuts the pin shaft 128a, and a second end of the telescopic return element 1226 abuts the engagement rod 1225. The telescopic return element 1226 pushes the engagement rod 1225 into the extended position, so that, unless blocked by an external force, the engagement rod 1225 is held in the extended position by an elastic restoring force of the telescopic return element 1226. When the first rotary arm 122a rotates into the unfolded position, the engagement rod 1225 can automatically return to the extended position and engage in the engagement recess 1231 of the rotary locking element 123. The telescopic return element 1226 includes, for example, a compression spring. The engagement rod 1225 is provided with a receiving cavity 12256. The telescopic retraction element 1226 is housed in the receiving cavity 12256.The second end of the telescopic retraction element 1226 abuts a lower wall of the receiving cavity 12256, and the first end of the telescopic retraction element 1226 abuts the pin shaft 128a.

[0178] In this embodiment, the arrangement of the engagement rod 1225, which is movable relative to the body rod 1224, allows the first rotating arm 122a to engage more smoothly with the rotational locking element 123, so that the first rotating arm 122a can be switched more smoothly from the folded position to the unfolded position. In particular, during the switching of the first rotating arm 122a from the folded position to the unfolded position, the engagement projection 1221 of the engagement rod 1225 is pressed by the rotational locking element 123, and then the engagement rod 1225 retracts into the body rod 1224 (i.e., moves in the direction of the retracted position), so that the first rotating arm 122a can rotate more smoothly relative to the rotational base 121.When the first rotary arm 122a switches to the unfolded position, the engagement projection 1221 points towards the engagement recess 1231, the engagement rod 1225 is not stopped by the rotation locking element 123, and the engagement rod 1225 moves from the retracted position to the extended position, so that the engagement projection 1221 engages in the engagement recess 1231 and thereby holds the first rotary arm 122a in the unfolded position.

[0179] As in the Fig. 41, Fig. 42 to Fig. As shown in Figure 43, the mounting connection assembly 10 is further equipped with an auxiliary return element 105. One end of the auxiliary return element 105 is connected to the connection base 101, and another end of the auxiliary return element 105 abuts the first pivot arm 102a (i.e., the first rotating arm 122a). The auxiliary return element 105 biases the first pivot arm 102a so that it rotates toward the unfolded position. The auxiliary return element 105 can provide an auxiliary force to rotate the first pivot arm 102a toward the unfolded position during the unfolding of the bed frame 1000. That is, the first pivot arm 102a and the second pivot arm 102b (i.e., the second rotating arm 122b) can be rotated more easily toward the unfolded position. In this way, the bed frame 1000 can be unfolded more conveniently and with less effort.When the bed frame 1000 is in the folded state, it tends to unfold under an elastic restoring force of the auxiliary restoring element 105. Therefore, the support legs 200 of the bed frame 1000 can be tied together with a rope, strap, band, or the like to fully fold the bed frame 1000 and facilitate storage. In this embodiment, the auxiliary restoring element 105 can be arranged on the first pivot arm 102a of the first armrest frame 110, or on the first pivot arm 102a of the second armrest frame 120, or on the first pivot arm 102a of both the first armrest frame 110 and the second armrest frame 120.

[0180] With reference to Fig. 46 The auxiliary return element 105, for example, comprises a torsion spring. The auxiliary return element 105 comprises two spring body sections 1053, two first end sections 1051, and a second end section 1052 connected to the two spring body sections 1053. The first pivot arm 102a (i.e., the first rotation arm 122a) is pivotably connected to the connecting base 101 via the pin shaft 128a, and the two spring body sections 1053 are mounted on the pin shaft, each located on one of the two opposite sides of the first pivot arm 102a. The two first end sections 1051 abut the connecting base 101 (i.e., the rotation base 121). In particular, the two side walls 1213 of the rotation base 121 are each provided with a stop hole 1216. The first end sections 1051 are inserted into the respective stop holes 1216 and abut against the respective perforated walls of the stop holes 1216.The second end section 1052 abuts the first rotating arm 102a and is located between the first rotating arm 102a and the second rotating arm 102b.

[0181] In this embodiment, as in the Fig. 42 and Fig. As shown in Figure 46, the second end section 1052 is essentially U-shaped. The auxiliary return element 105 can be mounted in the following two ways.

[0182] In the first type, after the first rotary arm 102a has been extended so that it is located below the second end section 1052, the two spring body sections 1053 are each attached to two opposite sides of the first rotary arm 102a and placed on the pin shaft 128a, and finally the two first end sections 1051 are inserted into the respective stop holes 1216 and abut against the respective hole walls of the stop holes 1216.

[0183] In the second type, the two first end sections 1051 are inserted into the respective stop holes 1216 and abut against the respective perforated walls of the stop holes 1216; the first rotary arm 102a is extended so that it is located below the second end section 1052, and the two spring body sections 1053 are attached to two opposite sides of the first rotary arm 102a and placed on the pin shaft 128a.

[0184] When the first pivot arm 102a is in the folded position, the auxiliary return element 105 is in an elastic energy storage state, and the elastic return force of the auxiliary return element 105 causes the first pivot arm 102a to rotate slightly towards the unfolded position or causes the first pivot arm 102a to tend to rotate towards the unfolded position, making it easier to unfold the bed frame 1000.

[0185] As in Fig. As shown in Figure 41, the mounting structure 11 in this embodiment further comprises the corner connecting elements 130, support legs 200, and connecting rods 140. The first armrest frame 110 and the second armrest frame 120 are connected to the corner connecting element 130. The support leg 200 is connected to the corner connecting element 130. The support leg 200 is provided with the sliding element 400. The first armrest frame 110 and the second armrest frame 120 are connected to the same sliding element 400 via the respective connecting rods 140. The first armrest frame 110 and the second armrest frame 120 are drive-connected to each other via the coupling element 20.

[0186] In contrast to the first to sixth embodiments, in the seventh embodiment, during the transition of the child carrier from the folded to the unfolded state, the elastic restoring force of the auxiliary restoring element 105 causes the first pivot arm 102a (i.e., the first rotating arm 122a) to rotate in the direction of the unfolded position, thus making it easier to unfold the child carrier (i.e., the bed frame 1000). Furthermore, during the transition of the bed frame 1000 from the folded to the unfolded state, the engagement rod 1225 of the first rotating arm 122a is pressed and retracted by the rotating locking element 123. When the first rotating arm 122a is rotated in place (i.e., rotated into the unfolded position), the engagement rod 1225 protrudes from the insertion cavity 12241 of the body rod 1224 and engages in the engagement recess 1231 of the rotating locking element 123.

[0187] In the seventh embodiment, the folding process of the child carrier (i.e., the process from the unfolded state to the folded state) can be described in the fourth and fifth embodiments, the details of which are not described again here.

[0188] In other embodiments, the mounting connection assemblies 10 in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment can be provided with the auxiliary return element 105 to assist in unfolding the bed frame 1000, which is not limited in the present application.

[0189] According to the child carrier, the mounting connection structure and the mounting connection assembly in the embodiments of the present application, the pivoting of the pivoting arm is prevented or enabled by the arrangement of the movable locking element, whereby the child carrier, the mounting connection structure and the mounting connection assembly have a simple structure and an easily changeable state.

[0190] The technical features of the aforementioned embodiments can be combined in any way. To keep the description concise, not all possible combinations of the technical features in the embodiments are described. However, as long as there are no contradictions in the combination of these technical features, the combinations should be considered to be included in the scope of the description.

[0191] The embodiments mentioned above illustrate only some implementations of the present application, and the descriptions are relatively specific and detailed, but should not be interpreted as limiting the scope of the present application. Those skilled in the art should understand that various variations and improvements can be made without departing from the concept of the present application, and that all of them fall within the scope of protection of the present application. Therefore, the patent protection of the present application is subject to the attached claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 2023115616284

[0001] CN 2023110488754

[0001]

Claims

[1] A bracket connection structure comprising a bracket connection assembly, wherein the bracket connection assembly comprises: a connecting base; at least one swivel arm that is pivotably connected to the connecting base; and a locking element that is movably arranged on the connection base to restrict or allow the rotation of the at least one pivot arm relative to the connection base. [2] The mounting connection structure according to claim 1, wherein the mounting connection assembly comprises a movable connection assembly, the movable connection assembly comprising: a pivot base serving as a connecting base; at least one set of pivot arms serving as the at least one swivel arm, each set of pivot arms comprising a first pivot arm and a second pivot arm pivotably connected to the same side of the pivot base, the first pivot arm and the second pivot arm being spaced apart from each other; and at least one movable locking element, which is movably arranged on the pivot base and can be converted between a motion-unlocked position and a motion-locked position; wherein, when the movable locking element is in the motion-locked position, the movable locking element simultaneously stops the first pivot arm and the second pivot arm to limit the rotation of the first pivot arm and the rotation of the second pivot arm; and when the movable locking element is in the motion-unlocked position, the first pivot arm and the second swivel arm can be rotated relative to the swivel base. [3] The mounting connection structure according to claim 2, wherein the movable locking element comprises a first surface and a second surface opposite each other; wherein, when the movable locking element is in the movement-locked position, the first pivot arm is stopped by the first surface and the second pivot arm is stopped by the second surface; and wherein, when the movable locking element is in the movement-unlocked position, the first pivot arm is displaced relative to the first surface and the second pivot arm is displaced relative to the second surface. [4] The mounting connection structure according to one of claims 2 to 3, wherein two sets of pivot arms are provided and the two sets of pivot arms are each arranged on two opposite sides of the pivot base; and two movable locking elements are provided, and the two movable locking elements each interact with the two sets of pivot arms to restrict or allow the rotation of the two sets of pivot arms relative to the pivot base. [5] The mounting connection structure according to claim 4, wherein the movable connecting assembly further comprises a movable return element arranged between the two movable locking elements, and wherein the movable return element is designed to bias the two movable locking elements to cause the two movable locking elements to tend to move in the direction of the motion-locked position. [6] The mounting connection structure according to any one of claims 2 to 5, wherein the movable connection assembly further comprises a connecting element which is movably arranged on the pivot base, and wherein one element from the group of connecting element or movable locking element is provided with a drive groove, wherein the direction of extension of the drive groove is at an angle to the direction of movement of the movable locking element and at an angle to the direction of movement of the connecting element, and the other element from the group of connecting element or movable locking element is provided with a drive element, wherein the drive element is in a sliding fit with the drive groove in order to drive the movable locking element to convert between the movement-locked position and the movement-unlocked position. [7] The mounting connection structure according to claim 6, wherein the mounting connection structure comprises two movable connection assemblies and wherein the movable locking element of one of the two movable connection assemblies is connected via a coupling element to the movable locking element of another of the two movable connection assemblies, such that when one of the two movable connection assemblies is operated, the other of the two movable connection assemblies is driven to convert between a locking state and an unlocking state. [8] The mounting connection structure according to claim 7, wherein the two movable connection assemblies comprise a first movable assembly and a second movable assembly and wherein the connecting element of the first movable assembly is provided with an operable operating section. [9] The mounting connection structure according to any one of claims 2 to 8, wherein the mounting connection assembly further comprises a rotation connection assembly and a coupling element, wherein the rotation connection assembly comprises: a rotation base serving as a connection base; at least one first rotation arm serving as a pivot arm, wherein the at least one first rotation arm is pivotably connected to the rotation base; and at least one rotational locking element that is rotatably arranged on the rotational base and can be converted between a rotationally unlocked position and a rotationally locked position, wherein, when the rotational locking element is in the rotationally unlocked position, the first rotational arm is rotatable relative to the rotational base, and when the rotational locking element is in the rotationally locked position, the first rotational arm is restricted in its rotation relative to the rotational base; and wherein the movable connecting assembly is able to drive the rotary connecting assembly via the coupling element to convert from a locking state to an unlocking state; or the rotary connecting assembly is able to drive the movable connecting assembly via the coupling element to convert from a locking state to an unlocking state. [10] The mounting connection structure according to claim 9, wherein either the first rotating arm or the rotating locking element is provided with an engagement recess and the other element is provided with an engagement projection, wherein when the rotating locking element is in the rotationally locked position, the engagement projection engages in the engagement recess and when the rotating locking element is in the rotationally unlocked position, the engagement projection is released from the engagement recess. [11] The mounting connection structure according to any one of claims 1 to 10, wherein the mounting connection assembly comprises a rotary connection assembly, the rotary connection assembly comprising: a rotation base serving as a connection base; at least one first rotation arm serving as a pivot arm, wherein the at least one first rotation arm is pivotably connected to the rotation base; and at least one rotational locking element that is rotatably arranged on the rotational base and can be converted between a rotationally unlocked position and a rotationally locked position; wherein, when the rotational locking element is in the rotationally unlocked position, the first rotational arm is rotatable relative to the rotational base, and when the rotational locking element is in the rotationally locked position, the first rotational arm is restricted in rotating relative to the rotational base. [12] The mounting connection structure according to claim 11, wherein the rotation connection assembly is designed with two first rotation arms, wherein the opposing ends of the two first rotating arms are pivotably connected to the rotating base, wherein two rotating locking elements are provided which can be engaged with the respective first rotating arms, and wherein the two rotational locking elements interlock so that the two rotational locking elements can synchronously convert between the rotationally locked position and the rotationally unlocked position. [13] The mounting connection structure according to one of claims 11 or 12, wherein the rotation connection assembly further comprises a rotation return element and wherein the rotation return element biases the rotation locking element to cause the rotation locking element to tend to rotate in the direction of the rotationally locked locking position. [14] The mounting connection structure according to one of claims 11 to 13, wherein the rotation connection assembly further comprises an operating element, wherein the rotation base of the rotation connection assembly comprises a receiving groove, wherein the rotational locking element is at least partially received in the receiving groove, wherein one side wall of the receiving groove is formed with a through hole, and wherein the control element is connected to the rotary locking element via the through hole in order to drive the rotary locking element to convert between the rotary locked position and the rotary unlocked position. [15] The mounting connection structure according to claim 14, wherein the rotation locking element is formed with a pivot projection having a concave section and wherein the operating element is formed with a pivot recess designed to receive the pivot projection, wherein the pivot recess is formed with a convex section designed to engage with the concave section. [16] The mounting connection structure according to one of claims 11 to 15, wherein two rotary connection assemblies are provided, the two rotary connection assemblies are drivenly connected to each other via a coupling element, and wherein, when one of the rotary connection assemblies is operated, the other of the rotary connection assemblies is driven by the coupling element to convert between a locking state and an unlocking state. [17] The mounting connection structure according to any one of claims 11 to 16, wherein the first rotating arm comprises a body rod and an engagement rod, wherein the engagement rod is connected to an end of the body rod that adjoins the rotary locking element and is movable relative to the body rod between an extended position and a retracted position; and wherein the first rotating arm has an unfolded position and a folded position and during the conversion of the first rotating arm from the folded position to the unfolded position, the rotating locking element presses against the engagement rod, so that the engagement rod moves from the unfolded position to the retracted position. [18] The mounting connection structure according to claim 17, wherein the rotation locking element is formed with an engagement recess and an end of the engagement rod located away from the body rod serves as an engagement projection, and wherein, when the first rotation arm is in the folded position, the engagement projection is separated from the engagement recess and the engagement rod is in the extended position; and when the first rotation arm changes from the folded position to the unfolded position, the engagement projection is facing the engagement recess and the engagement rod moves from the retracted position to the extended position, so that the engagement projection engages in the engagement recess. [19] The mounting connection structure according to one of claims 17 or 18, wherein one element of the group consisting of body rod and engagement rod is formed with an insertion cavity and the other element of the group consisting of body rod and engagement rod is inserted into the insertion cavity and is at least partially confined therein. [20] The mounting connection structure according to one of claims 17 to 19, wherein the body rod is formed with an insertion cavity and pivotably connected to the base of rotation via a pin shaft, wherein the engagement rod is inserted into the insertion cavity and is formed with a guide groove, wherein an expansion direction of the guide groove runs parallel to an expansion direction of the insertion cavity, and the pin shaft extends through the guide groove and prevents the engagement rod from separating from the body rod. [21] The mounting connection structure according to claim 20, wherein an end of the engagement rod, which is away from the engagement projection, is provided with a first insertion end and a second insertion end, wherein the first insertion end and the second insertion end enclose an insertion opening which is connected to the guide groove; and wherein at least one element of the group consisting of the first insertion end and the second insertion end is formed with a limiting projection, and wherein the engagement rod enables the pin shaft to extend through the insertion opening into the guide groove and prevents the guide groove from detaching from the pin shaft by the limiting projection abutting the pin shaft. [22] The mounting connection structure according to one of claims 20 or 21, wherein the first rotating arm is further provided with a telescopic return element and wherein one end of the telescopic return element abuts the pin shaft, another end of the telescopic return element abuts the engagement rod and the telescopic return element biases the engagement rod to move it in the direction of the extended position. [23] The mounting connection structure according to claim 22, wherein the engagement rod is formed with a receiving cavity and the telescopic return element is received in the receiving cavity and abuts a lower wall of the receiving cavity. [24] The mounting connection structure according to any one of claims 1 to 23, wherein the at least one pivot arm comprises a first pivot arm, wherein the first pivot arm is pivotably connected to the connection base via a pin shaft and can be converted between an open position and a folded position, and wherein the mounting connection assembly is further provided with an auxiliary return element, wherein one end of the auxiliary return element is connected to the connection base, another end of the auxiliary return element abuts the first pivot arm and the auxiliary return element biases the first pivot arm to rotate it in the direction of the open position. [25] The mounting connection structure according to claim 24, wherein the auxiliary return element comprises: two spring body sections; two first end sections; and a second end section that is connected to the two spring body sections, wherein the first pivot arm is pivotably connected to the connecting base via the pin shaft, the two spring body sections are mounted on the pin shaft and are each located on two opposite sides of the first pivot arm, and wherein the first two end sections abut the connecting base and the second end section abuts the first swivel arm and is located between the first swivel arm and a second swivel arm. [26] A child carrier comprising the support connection structure according to any one of claims 1 to 25.

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