Bed frame, hammock and crib

Abstract

The present application relates to a bed frame, a hammock and a crib. The bed frame includes: a first column; a second column disposed parallel to the first column; and an armrest tube mechanism movably connected between the first column and the second column. The armrest tube mechanism is switchable between an unfolded position and a folded position. When the armrest tube mechanism is in the unfolded position, the armrest tube mechanism is at least partially parallel to a horizontal plane.

Description

BED FRAME, HAMMOCK AND CRIB CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 2023110272321, filed on August 14, 2023, Chinese patent application No. 2023117812782, filed on December 21, 2023, Chinese patent application No. 2023111556941, filed on September 7, 2023, and Chinese patent application No. 202411099098.0, filed on August 9, 2024, the contents of which are incorporated herein by reference in their entireties.TECHNICAL FIELD

[0002] The present application relates to the technical field of furniture, and in particular, to a bed frame, a hammock and a crib.BACKGROUND

[0003] Cribs are mainly used to provide a place for children to rest or play. Usually, in order to facilitate the storage or transportation of cribs, the cribs are usually configured to have a foldable structure to reduce the size. Generally, the crib includes columns and a plurality of armrest tubes that can be folded and connected between the columns. The plurality of armrest tubes are pivotally connected to one another. The armrest tubes approach one another by being pivotally connected to one another, to drive the columns to approach one another to achieve the folding of the crib. However, the common armrest tubes are limited by their configurations, and upper surfaces of the armrest tubes is uneven after pivoting, which easily leads to the crib covers covering the armrest tubes not fitting well, and the appearance is not neat.

[0004] In addition, in order to facilitate the rest of small babies, a hammock is generally installed in the crib currently on the market. In order to ensure that the mattress on the hammock is flat and make the baby more comfortable when staying on the mattress, the hammock is generally provided with a support structure for supporting the mattress. The support structure can be folded together with the crib. However, the support structure of the cribs currently on the market still has a large volume after being folded, which is disadvantageous to storage and transportation.SUMMARY

[0005] According to various embodiments of the present application, a bed frame, a hammock and a crib are provided.

[0006] In one aspect, the present application provides a bed frame, including: a first column; asecond column disposed parallel to the first column; and an armrest tube mechanism movably connected between the first column and the second column. The armrest tube mechanism is switchable between an unfolded position and a folded position. When the armrest tube mechanism is in the unfolded position, the armrest tube mechanism is at least partially parallel to a horizontal plane.

[0007] In an embodiment, the armrest tube mechanism includes a first armrest tube assembly. The first armrest tube assembly includes a first armrest tube. The first armrest tube has a first pivoting end and a first sliding end. The first pivoting end is pivotally connected to one of the first column and the second column. The first sliding end is pivotally and slidably connected to another of the second column and the first column. When the armrest tube mechanism is in the unfolded position, the first column and the second column are away from each other, and the first armrest tube is at least partially parallel to the horizontal plane.

[0008] In an embodiment, the first armrest tube includes a first tube segment and a second tube segment that are connected to each other and arranged at an angle to each other. A first end of the first tube segment away from the second tube segment is the first pivoting end, and a first end of the second tube segment away from the first tube segment is the first sliding end. When the armrest tube mechanism is in the unfolded position, the first tube segment is parallel to the horizontal plane, and the second tube segment extends downward from a second end of the first tube segment.

[0009] In an embodiment, an angle formed between the first tube segment and the second tube segment is greater than 90°.

[0010] In an embodiment, the angle between the first tube segment and the second tube segment is 150°.

[0011] In an embodiment, the first armrest tube assembly includes two first armrest tubes. The first pivoting end of one of the two first armrest tubes is pivotally connected to the first column, and the first sliding end of the one of the two first armrest tubes is pivotally and slidably connected to the second column; the first pivoting end of another of the two first armrest tubes is pivotally connected to the second column, and the first sliding end of the other of the two first armrest tubes is slidably and pivotally connected to the first column. When the armrest tube mechanism is in the unfolded position, the two first armrest tubes are disposed side by side in a horizontal direction, and projections of the first tube segments of the two first armrest tubes onto a vertical plane that is perpendicular to the horizontal plane and parallel to an extending direction of each first tube segment are at leastpartially overlapped.

[0012] In an embodiment, the first armrest tube assembly further includes a rotating connection mechanism, and the two first armrest tubes are pivotally connected to each other via the rotating connection mechanism.

[0013] In an embodiment, the rotating connection mechanism includes two rotating members. Each of the rotating members is provided with a first connecting part and a second connecting part. Each of the first armrest tubes is connected to the first connecting part of a respective one of the rotating members. Two second connecting parts are rotatably connected to each other.

[0014] In an embodiment, the rotating member includes a first clamping plate, a connecting plate and a second clamping plate. The connecting plate is connected between the first clamping plate and the second clamping plate so that the first clamping plate, the connecting plate and the second clamping plate enclose a clamping groove. The first clamping plate and the second clamping plate are each provided with the first connecting part and the second connecting part. The first connecting part is closer to an opening of the clamping groove than the second connecting part. The first armrest tube is limited within the clamping groove and connected to the two first connecting parts.

[0015] In an embodiment, the rotating member further includes a reinforcing rib. The first clamping plate and the second clamping plate are each provided with the reinforcing rib. The reinforcing rib on the first clamping plate extends toward the second clamping plate, and the reinforcing rib on the second clamping plate extends toward the first clamping plate.

[0016] In an embodiment, the rotating connection mechanism includes two rotating connection parts. Each of the rotating connection parts includes a clamping plate and a connecting post fixed to the clamping plate. The clamping plate is provided with a first connecting part. The two first armrest tubes are respectively connected to the first connecting parts of the two rotating connection parts, and are pivotally connected to each other through the connecting posts of the two rotating connection parts.

[0017] In an embodiment, the clamping plates and the connecting posts of the two rotating connection parts enclose a clamping groove. The two first armrest tubes are limited into the clamping groove and connected to the respective first connecting parts.

[0018] In an embodiment, the rotating connection mechanism is connected to the first tube segments of two first armrest tubes, and when the armrest tube mechanism is in the unfolded position,the rotating connection mechanism is positioned below each of the first tube segments.

[0019] In an embodiment, at least one of the first armrest tubes is provided with a first protective component. The first protective component is positioned at a pivotal connection between the two first armrest tubes. When the armrest tube mechanism is switched from the unfolded position to the folded position, the two first armrest tubes respectively pivot relative to the rotating connection mechanism, and the two first armrest tubes and the rotating connection mechanism enclose a first trapped region. The first protective component is configured to shield the first trapped region.

[0020] In an embodiment, the first protective assembly includes a first protective plate and a first protective connector. The first protective plate is configured to shield the first trapped region. The first protective connector is fixed to a side edge of the first protective plate and is configured to be connected to the first armrest tube.

[0021] In an embodiment, a first arc-shaped concave surface capable of fitting an outer wall of the first armrest tube is disposed on a side of the first protective connector facing away from the first protective plate.

[0022] In an embodiment, the bed frame further includes a comer member. The comer member is disposed on each of the first column and the second column. Each corner member has a first pivot portion configured to be pivotally connected to the first pivoting end.

[0023] In an embodiment, the bed frame further includes a sliding member. The sliding member is slidably disposed on each of the first column and the second column. Each sliding member is provided with a second pivot part configured to be pivotally connected to the first sliding end.

[0024] In an embodiment, the corner member includes a locking mechanism. When the armrest tube mechanism is in the unfolded position, the locking mechanism can be locked with the sliding member to limit a sliding of the sliding member relative to the corresponding column.

[0025] In an embodiment, the locking mechanism includes a locking member pivotally connected to the corner member and a reset member. The locking member has an operating end and a locking end. The sliding member is provided with a locking mating part. The locking member is pivotable between a locked position and an unlocked position. When the locking member is in the locked position, the locking end is capable of being locked with the locking mating part; when the locking member is in the unlocked position, the locking end is capable of being unlocked from the locking mating part. The operating end is operable to pivot the locking member from the locked position tothe unlocked position. The reset member is configured to bias the operating end to pivot the locking member toward the locked position.

[0026] In an embodiment, the armrest tube mechanism includes a second armrest tube assembly. The second armrest tube assembly includes two second armrest tubes and two third armrest tubes. Each of the two second armrest tubes has a second pivoting end and a second sliding end. The wo second pivoting ends of the two second armrest tubes are pivotally connected to each other, and the two second sliding ends of the two second armrest tubes are slidably disposed on the first column and the second column, respectively, and are pivotally connected to the first column and the second column respectively. Each of the two third armrest tubes has a third pivoting end and a fourth pivoting end. The two third pivoting ends of the two third armrest tubes are pivotally connected to each other. The two fourth pivoting ends of the two third armrest tubes are pivotally connected to the first column and the second column respectively. When the armrest tube mechanism is in the unfolded position, at least a part of tube segments of each second armrest tube and at least a part of tube segments of each third armrest tube are parallel to the horizontal plane.

[0027] In an embodiment, the second armrest tube includes a third tube segment and a fourth tube segment that are connected to each other and arranged at an angle to each other. A first end of the third tube segment away from the fourth tube segment is the second pivoting end, and a first end of the fourth tube segment away from the third tube segment is the second sliding end. The third armrest tube includes a fifth tube segment and a sixth tube segment that are connected to each other and arranged at an angle to each other. A first end of the fifth tube segment away from the sixth tube segment is the fourth pivoting end, and a first end of the sixth tube segment away from the fifth tube segment is the third pivoting end. When the armrest tube mechanism is in the unfolded position, each third tube segment and each fifth tube segment are positioned in a same horizontal plane, and the fourth tube segment extends downward from a second end of the third tube segment, and the sixth tube segment extends downward from a second end of the fifth tube segment; the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column are disposed side by side in a horizontal direction, and projections of the fifth tube segment and the third tube segment onto a vertical plane that is perpendicular to the horizontal and parallel to an extending direction of each of the fifth tube segment and the third tube segment are partially overlapped.

[0028] In an embodiment, the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column are pivotally connected to each other.

[0029] In an embodiment, the bed frame further includes a second protective component. The second protective component is disposed on each second armrest tube and / or each third armrest tube, and is positioned at a pivotal connection between the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column. When the armrest tube mechanism is switched from the unfolded position to the folded position, the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column pivot relative to each other, and the second armrest tube, the third armrest tube and the pivotal connection between the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column enclose a second trapped region. The second protective component is configured to shield the second trapped region.

[0030] In an embodiment, when the second protective component is disposed on each the third armrest tube, the second protective component extends from the fifth tube segment to the sixth tube segment; and when the armrest tube mechanism is switched from the unfolded position to the folded position, two sixth tube segments pivot with respect to each other and encloses a third trapped region. The second protective component is further configured to shield the third trapped region.

[0031] In an embodiment, the second protective component includes a second protective plate and a second protective connector. The second protective plate is configured to shield the second trapped region. The second protective connector is fixed to a side edge of the second protective plate and is configured to be connected to the second armrest tube and / or the third armrest tube.

[0032] In an embodiment, a second arc-shaped concave surface capable of fitting an outer wall of the second armrest tube and / or the third armrest tube is disposed on a side of the second protective connector facing away from the second protective plate.

[0033] In an embodiment, the armrest tube mechanism includes a second armrest tube assembly. The second armrest tube assembly includes two second armrest tubes. Each of the two second armrest tubes has a second pivoting end and a second sliding end. Two second pivoting ends are pivotally connected to each other. Two second sliding ends are respectively slidably disposed on the first column and the second column, and are pivotally connected to the first column and the second column. When the armrest tube mechanism is in the unfolded position, at least a part of tube segments of eachsecond armrest tube is parallel to the horizontal plane.

[0034] In an embodiment, each second armrest tube includes a third tube segment and a fourth tube segment that are connected to each other and arranged at an angle to each other. A first end of the third tube segment away from the fourth tube segment is the second pivoting end, and a first end of the fourth tube segment away from the third tube segment is the second sliding end. When the armrest tube mechanism is in the unfolded position, each third tube segment is parallel to the horizontal plane, and the fourth tube segment extends downward from a second end of the third tube segment.

[0035] In an embodiment, the armrest tube mechanism includes a second armrest tube assembly. The second armrest tube assembly includes two third armrest tubes. Each of the two third armrest tubes has a third pivoting end and a fourth pivoting end. Two third pivoting ends are pivotally connected to each other, and two fourth pivoting ends are pivotally connected to the first column and the second column respectively. When the armrest tube mechanism is in the unfolded position, at least a part of tube segments of each third armrest tube is parallel to the horizontal plane.

[0036] In an embodiment, the third armrest tube includes a fifth tube segment and a sixth tube segment that are connected to each other and arranged at an angle to each other. A first end of the fifth tube segment away from the sixth tube segment is the fourth pivoting end, and a first end of the sixth tube segment away from the fifth tube segment is the third pivoting end. When the armrest tube mechanism is in the unfolded position, each fifth tube segment is parallel to the horizontal plane, and the sixth tube segment extends downward from a second end of the fifth tube segment.

[0037] In another aspect, the present application provides a bed frame, including: a plurality of columns spaced apart along a circumference; and a plurality of armrest tube mechanisms. Each armrest tube mechanism is movably connected between two adjacent columns. The armrest tube mechanisms are switchable between an unfolded position and a folded position so that the bed frame is switchable between an unfolded state and a folded state. When the armrest tube mechanisms are in the unfolded position, at least a portion of the armrest tube mechanisms is parallel to a horizontal plane. When the bed frame is in the unfolded state, the plurality of columns are away from each other; and when the bed frame is in the folded state, the plurality of columns are folded together.

[0038] In an embodiment, the armrest tube mechanism includes at least one of a first armrest tube assembly and a second armrest tube assembly. The first armrest tube assembly includes a first armresttube. The first armrest tube has a first pivoting end and a first sliding end. The first pivoting end is pivotally connected to one of the two adjacent columns, and the first sliding end is pivotally and slidably connected to another of the two adjacent columns. When the bed frame is in the unfolded state, the two adjacent columns are away from each other, and at least a part of tube segments of the corresponding first armrest tube is parallel to the horizontal plane. The second armrest tube assembly include two second armrest tubes and two third armrest tubes. Each of the two second armrest tubes has a second pivoting end and a second sliding end. The second pivoting ends of the two second armrest tubes are pivotally connected to each other, and the second sliding ends of the two second armrest tubes are respectively slidably disposed on and respectively pivotally connected to the two adjacent columns. Each of the two third armrest tubes has a third pivoting end and a fourth pivoting end. The third pivoting ends of the two third armrest tubes are pivotally connected to each other, and the fourth pivoting ends of the two third armrest tubes are respectively pivoted to the two adjacent columns. When the bed frame is in the unfolded state, at least a part of tube segments of each of the second armrest tubes and at least a part of tube segments of each of the third armrest tubes are parallel to the horizontal plane.]

[0039] In another aspect, the present application provides a bed frame, including: a plurality of columns spaced apart along a circumference; a plurality of armrest tube mechanisms, each armrest tube mechanism being movably connected between each two adjacent columns, the armrest tube mechanism including at least one pair of armrest tubes, each pair of armrest tubes including two armrest tubes, the two armrest tubes intersecting with each other and being pivotally connected to each other, each armrest tube mechanism being switchable between an unfolded position and a folded position so that the bed frame is switchable between an unfolded state and a folded state; and a plurality of protection components. Each pair of armrest tubes is provided with the protection component, and the protection component is installed on at least one of the armrest tubes and is positioned at a pivotal connection between two armrest tubes. When each armrest tube mechanism is switched between the unfolded position and the folded position, each protective component is configured to shield a trapped region formed between two of the corresponding pair of armrest tubes.

[0040] In yet another aspect, the present application provides a crib, including a crib cover and a bed frame as described in any of the aforementioned embodiments.

[0041] In an embodiment, the crib cover includes a bottom support sheet, on which an operatingmember is disposed. The operating member is operable to switch the bed frame from an unfolded state to a folded state.

[0042] In an embodiment, the crib further includes a hammock, detachably connected to the bed frame. The hammock is provided with an operating port facing the operating member.

[0043] In yet another aspect, the present application provides a crib, including: a bed frame having a top frame; and a hammock. The hammock includes: a hammock cover; and a support assembly connected to the hammock cover. The support assembly includes a pivot base and a plurality of support tube components pivotally connected to the pivot base circumferentially. Each of the support tube components including a plurality of tube segments. The hammock is installed in the bed frame. The crib is switchable between an unfolded state and a folded state. When the crib is in the folded state, a folded height of the support assembly is lower than a height of a highest point of the top frame.

[0044] In an embodiment, each of the support tube components includes an inner support tube and an outer support tube slidably sleeved on the inner support tube. When the crib is in the unfolded state, the inner support tube at least partially extends out of the outer support tube. When the crib is in the folded state, the inner support tube is retracted into the outer support tube.

[0045] In an embodiment, the hammock cover includes a bottom cover. An end of each outer support tube is connected to the bottom cover. A length of the outer support tube is less than or equal to a vertical distance from the bottom cover to the highest point of the top frame when the crib is in the unfolded state.

[0046] In an embodiment, the hammock cover includes a bottom cover. The bottom cover is provided with a plurality of sleeves. A plurality of the outer support tubes are respectively inserted and fixed in the plurality of the sleeves.

[0047] In an embodiment, a length of each outer support tube is equal to a length of each sleeve.

[0048] In an embodiment, the crib further includes a plurality of columns configured to support the top frame. When the crib is in the unfolded state, a length of each support tube component is smaller than a length of each of the columns.

[0049] In yet another aspect, the present application provides a crib, including: a bottom support sheet, on which an operating member is provided; and a hammock including a support assembly. The support assembly includes a pivot base and a plurality of support tube components pivotallyconnected to the pivot base circumferentially. The hammock is installed in the crib. The crib is switchable between an unfolded state and a folded state. During switching of the crib from the unfolded state to the folded state, the operating member is capable of driving the pivot base and the plurality of support tube components to pivot relative to each other when being pulled upward.

[0050] In an embodiment, the hammock further includes a bottom cover positioned above the bottom support sheet. The plurality of support tube components are connected to the bottom cover. The bottom cover is provided with a first opening. The pivot base is provided with a second opening. The first opening, the second opening and the operating member face each other.

[0051] In an embodiment, the operating member is a pull ring connected to the bottom support sheet.

[0052] In an embodiment, the crib further includes a top frame positioned above the bottom support sheet. When the crib is in the folded state, a folded height of the support assembly is lower than a height of a highest point of the top frame.

[0053] In an embodiment, each of the support tube components includes an inner support tube and an outer support tube slidably sleeved on the inner support tube. When the crib is in the unfolded state, the inner support tube at least partially extends out of the outer support tube. When the crib is in the folded state, the inner support tube is retracted into the outer support tube.

[0054] In an embodiment, the crib further includes a top frame positioned above the bottom support sheet. The hammock includes a bottom cover. An end of each outer support tube is connected to the bottom cover. A length of the outer support tube is less than or equal to a vertical distance from the bottom cover to a highest point of the top frame when the crib is in the unfolded state.

[0055] In an embodiment, the hammock cover includes a bottom cover provided with a plurality of sleeves. A plurality of outer support tubes are respectively inserted and fixed in the plurality of sleeves.

[0056] In an embodiment, the crib further includes a top frame positioned above the bottom support sheet and a plurality of columns configured to support the top frame. When the hammock is in the unfolded state, a length of each support tube component is less than a length of each of the columns.

[0057] In yet another aspect, the present application provides a hammock, including: a hammock cover; and a supporting assembly including a pivot base and a plurality of support tube componentspivotally connected to the pivot base circumferentially. Each support tube component includes an inner support tube and an outer support tube slidably sleeved on the inner support tube. The plurality of support tube components are connected to the hammock cover. The hammock is switchable between an unfolded state and a folded state. When the hammock is in the unfolded state, the inner support tube at least partially extends out of the outer support tube, and when the hammock is in the folded state, the inner support tube is retracted into the outer support tube.

[0058] In an embodiment, each inner support tube has a first end and a second end, and each outer support tube has a third end and a fourth end. Each first end is pivotally connected to the pivot base, each second end is inserted into the outer support tube via the corresponding third end to be slidably connected to the outer support tube. Each fourth end is connected to the hammock cover.

[0059] In an embodiment, the hammock cover includes a bottom cover provided with a plurality of sleeves. A plurality of outer support tubes are respectively inserted and fixed in the plurality of sleeves.

[0060] In an embodiment, a length of the outer support tube is equal to a length of each sleeve.

[0061] In an embodiment, the support assembly further includes an anti-contact assembly. The anti-contact assembly includes a first anti- contact member disposed on the inner support tube and a second anti-contact member disposed on the outer support tube. The first anti-contact member and the second anti-contact member are each at least partially positioned between the inner support tube and the outer support tube.

[0062] In an embodiment, the first end of the inner support tube is inserted into the outer support tube via the third end of the outer support tube and is slidably connected to the outer support tube. The first end of the inner support tube is provided with the first anti-contact member, and the third end of the outer support tube is provided with the second anti-contact member.

[0063] In an embodiment, the first anti-contact member is provided with a first engaging finger, the inner support tube is provided with a first engaging hole. The first anti-contact member is inserted into the inner support tube, and the first engaging finger is engaged to the first engaging hole. The first anti-contact member is at least partially positioned outside the inner support tube. The second anti-contact member is provided with a second engaging finger, the outer support tube is provided with a second engaging hole. The second anti-contact member is inserted into the outer support tube, and the second engaging finger is engaged to the second engaging hole. The second anti-contactmember is at least partially positioned outside the outer support tube.

[0064] In an embodiment, when the hammock is in the unfolded state, the support tube component is in an extended state, and when the hammock is in the folded state, the support tube component is in a shortened state. When the support tube component is in the extended state, the first anti-contact member and the second anti- contact member abut against each other.

[0065] In yet another aspect, the present application provides a crib, including a bed frame and a hammock as described in any one of the above embodiments.BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The drawings constituting a part of the present application are used to provide further understanding of the present application. The illustrative embodiments of the present application and descriptions thereof are used to explain the present application and do not unduly limit the present application.

[0067] In order to illustrate the embodiments of the present application more clearly, the drawings required in the embodiments will be described briefly. Apparently, the following described drawings merely illustrate the embodiments of the present application, and other drawings can be derived by those of ordinary skill in the art without any creative effort.

[0068] In addition, the drawings are not drawn to a 1 : 1 scale, and the relative sizes of the various elements are only exemplarily drawn in the drawings and are not necessarily drawn according to the true scale, in which:FIG. 1 is a top view schematically showing a crib according to an embodiment of the present application, with the crib is in an unfolded state;FIG. 2 is a side view schematically showing the crib shown in FIG. 1;FIG. 3 is a top view schematically showing the crib shown in FIG. 1 in a state between the unfolded state and a folded state;FIG. 4 is a top view schematically showing the crib shown in FIG. 1 in the folded state;FIG. 5 is a perspective view schematically showing a bed frame according to a first embodiment of the present application, including an enlarged view of a dotted circle;FIG. 6 schematically shows a partially structure of the bed frame shown in FIG. 5, with a first armrest tube assembly in an unfolded position;FIG. 7 is a perspective view schematically showing the first armrest tube assembly and arotating connection mechanism shown in FIG. 6;FIG. 8 schematically shows a partial structure of the bed frame shown in FIG. 5, with the first armrest tube assembly is in a folded position;FIG. 9 is a schematic cross-sectional view taken along a line Ul-Ul of FIG. 5;FIG. 10 is a perspective view schematically showing a rotating member;FIG. 11 is a perspective view schematically showing the rotating connection mechanism;FIG. 12 is a side view schematically showing the rotating connection mechanism;FIG. 13 is another perspective view schematically showing the bed frame according to the first embodiment of the present application, in which the bed frame includes a first protective component;FIG. 14 schematically shows the bed frame shown in FIG. 13, with the first armrest tube assembly in the folded position;FIG. 15 is a perspective view schematically showing a first protective component of the bed frame shown in FIG. 13;FIG. 16 is a perspective view schematically showing a bed frame according to a second embodiment of the present application, including an enlarged view of a dotted circle;FIG. 17 schematically shows a partial structure of the bed frame shown in FIG. 16, with a second armrest tube assembly in an unfolded position;FIG. 18 is a perspective view schematically showing the second armrest tube assembly and a rotating connection mechanism shown in FIG. 16;FIG. 19 schematically shows a partial structure of the bed frame shown in FIG. 16, with the second armrest tube assembly in a folded position;FIG. 20 is another schematic view schematically showing the bed frame according to the second embodiment of the present application, in which the bed frame includes a second protective component and the second armrest tube assembly is in the unfolded position;FIG. 21 schematically shows the bed frame shown in FIG. 20, with the second armrest tube assembly in a transition position between the unfolded position and the folded position;FIG. 22 schematically shows the bed frame shown in FIG. 20, with the second armrest tube assembly in the folded position;FIG. 23 is a perspective view schematically showing the second protective component ofthe bed frame shown in FIG. 20;FIG. 24 is another schematic view schematically showing the bed frame according to the second embodiment of the present application, in which the bed frame includes a second protective component having another structure and the second armrest tube assembly is in the unfolded position;FIG. 25 schematically shows the bed frame shown in FIG. 24, with the second armrest tube assembly in the transition position between the unfolded position and the folded position;FIG. 26 schematically shows the bed frame shown in FIG. 24, with the second armrest tube assembly in the folded position;FIG. 27 is a perspective view schematically showing the second protective component in the bed frame shown in FIG. 24;FIG. 28 is a perspective view schematically showing the second protective component of the bed frame shown in FIG. 24 from another perspective;FIG. 29 is a perspective view schematically showing a bed frame according to a third embodiment of the present application, including an enlarged view of a dotted circle;FIG. 30 is another perspective view schematically showing the bed frame according to the third embodiment of the present application, in which the bed frame includes a first protective component and a second protective component;FIG. 31 is yet another perspective view schematically showing the bed frame according to the third embodiment of the present application, in which the bed frame includes the first protective component and a second protective component having another structure;FIG. 32 is a schematic cross-sectional view taken along a line U2-U2 of FIG. 31;FIG. 33 is a schematic view schematically showing a partial structure of a bed frame according to a fourth embodiment of the present application, with a first armrest tube assembly in an unfolded position;FIG. 34 is another schematic view schematically showing a partial structure of the bed frame according to the fourth embodiment of the present application, with the first armrest tube assembly in a folded position;FIG. 35 schematically shows the bed frame shown in FIG. 33 including a protective component;FIG. 36 schematically shows the bed frame shown in FIG. 34 including a protectivecomponent;FIG. 37 is a schematic view schematically showing a partial structure of a bed frame according to a fifth embodiment of the present application, with a second armrest tube assembly in an unfolded position;FIG. 38 is another schematic view schematically showing a partial structure of the bed frame according to the fifth embodiment of the present application, with the second armrest tube assembly in a folded position;FIG. 39 schematically shows the bed frame shown in FIG. 37 including a protective component;FIG. 40 schematically shows the bed frame shown in FIG. 38 including a protective component;FIG. 41 is a schematic view of a crib according to an embodiment of the present application, including an enlarged view of a dotted circle;FIG. 42 is a schematic view of a bed frame and a support assembly of the crib shown in FIG. 41;FIG. 43 is a schematic view of a hammock in the crib shown in FIG. 41;FIG. 44 is a schematic view of a connection structure between an outer support tube and a sleeve of the hammock shown in FIG. 43;FIG. 45 is a schematic view of the support assembly in the hammock shown in FIG. 43, with support tube components of the support assembly all in an extended state;FIG. 46 is a schematic view of the support assembly shown in FIG. 45 from another perspective;FIG. 47 is a schematic view of the support assembly of the hammock shown in FIG. 43, with the support tube components of the support assembly all in an intermediate state between the extended state and a shortened state;FIG. 48 is a schematic view of the support assembly of the hammock shown in FIG. 43, with the support tube components of the support assembly all in the extended state and pivoted to be approximately below a pivot base;FIG. 49 is a schematic view of the support assembly of the hammock shown in FIG. 43, with the support tube components of the support assembly all in the intermediate state between theextended state and the shortened state and pivoted to be approximately below the pivot base;FIG. 50 is a schematic view of the support assembly of the hammock shown in FIG. 43, with the support tube components of the support assembly all in the shortened state and pivoted to be approximately below the pivot base;FIG. 51 is a cross-sectional view of one of the support tube components of the support assembly shown in FIG. 47, including an enlarged view of a dotted circle;FIG. 52 is a cross-sectional view of one of the support tube components of the support assembly shown in FIG. 45, including an enlarged view of a dotted circle;FIG. 53 is a schematic view of the support assembly shown in FIG. 45 from another perspective, including an enlarged view of a dotted circle;FIG. 54 is a schematic view of a first anti-contact member of the support assembly shown in FIG. 53;FIG. 55 is a schematic view of a second anti-contact member of the support assembly shown in FIG. 53;FIG. 56 is a schematic view of the crib shown in FIG. 41 in a semi-folded state;FIG. 57 is a schematic view of the crib shown in FIG. 41 in a folded state; andFIG. 58 is a schematic view of the crib shown in FIG. 57 after being wrapped and fixed by a mattress.

[0069] Illustrations for reference numerals:1000, crib;10, bed frame;110, column; 111, first column; 112, second column; 113, third column; 114, fourth column;120, armrest tube mechanism;121, first armrest tube assembly; 122, first armrest tube; 1221 A, first pivoting end; 1221B, first sliding end; 1222, first tube segment; 1223, second tube segment;123, rotating connection mechanism; 1231, rotating member; 12311, first connecting part; 12312, second connecting part; 12313, first clamping plate; 12314, connecting plate; 12315, second clamping plate; 12316, clamping groove; 12317, reinforcing rib;1232, rotating connection part; 12321, clamping plate; 12322, connecting post;124, second armrest tube assembly;125, second armrest tube; 1251 A, second pivoting end; 125 IB, second sliding end; 1252, third tube segment; 1253, fourth tube segment;126, third armrest tube; 1261A, third pivoting end; 1261B, fourth pivoting end; 1262, fifth tube segment; 1263, sixth tube segment;127, first trapped region; 128, second trapped region; 129, third trapped region;130, corner member; QI, first pivot part; 131, first corner part; 132, second corner part; 133, support base; 134, mounting base;140, sliding member; Q2, second pivot part; 141, first sliding part; 142, second sliding part; 143, locking mating part;150, locking mechanism; 151, locking member; 1511, operating end; 1512, locking end; 152, reset member; 153, button;160, first protective component; 161, first protective plate; 162, first protective connector; 1621, first arc-shaped concave surface; 1622, first connecting hole;170, second protective component; 171, second protective plate; 1711, first plate body; 1712, second plate body; 1713, arc groove; 172, second protective connector; 1721, second arc-shaped concave surface; 1722, second connecting hole;180, third protective component; 181, third protective plate;1110, top frame;1200, crib cover; 1210, bottom support sheet; 1220, side support sheet; 1230, protective member; 1300, operating member; 200, hammock; 201, operating port;210, hammock cover; 211, bottom cover; 212, side cover; 2111, first opening; 2112, sleeve; 2113, fastener;220, support assembly; 221, pivot base; 2211, second opening; 2212, first surface; 2213, second surface; 2214, pivot assembly; 2214a, pivot member; 222, support tube component; 2221, inner support tube; 2221a, first end; 2221b, second end; 2221c, first engaging hole; 2222, outer support tube; 2222a, third end; 2222b, fourth end; 2222c, second engaging hole; 223, anti-contact assembly; 2231, first anti-contact member; 2231a, first insertion part; 2231b, first abutting part; 2231c, first engaging finger; 2232, second anti-contact member; 2232a, second insertion part; 2232b, second abutting part; 2232c, second engaging finger; 224, end cover;230, receiving cavity, 240, zipper, 300, mattress, 310, webbing.DETAILED DESCRIPTION

[0070] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0071] FIGS. 1 to 4 are schematic views schematically showing a crib 1000 according to an embodiment of the present application. The crib 1000 is mainly used to provide a place for children or infants to rest or play. Specifically, the crib 1000 generally has a rectangular frame structure, including a bed frame 10 (see FIGS. 5, 13 or FIG. 17) and a crib cover 1200 (such as a cloth cover, etc., see FIGS. 1 to 4) covering the bed frame 10. The bed frame 10 is a foldable structure, so that the crib 1000 can be folded and can be switched between an unfolded state and a folded state. The crib 1000 has a small volume after being folded, which is convenient for storage and transportation.

[0072] FIG. 5 is a perspective view showing a bed frame 10 according to a first embodiment of the present application. The bed frame 10 includes: a first column 111, a second column 112, and an armrest tube mechanism 120. The second column 112 is disposed roughly parallel to the first column 111. The armrest tube mechanism 120 is movably connected between the first column 111 and the second column 112. The armrest tube mechanism 120 is switchable between an unfolded position (see FIGS. 5 and 6) and a folded position (see FIG. 8). When the armrest tube mechanism 120 is in the unfolded position, the armrest tube mechanism 120 is at least partially parallel to a horizontal plane.

[0073] In the above-mentioned bed frame 10, the armrest tube mechanism 120 is movably connected between the first column 111 and the second column 112, and thus has the unfolded position and the folded position. When the armrest tube mechanism 120 is in the folded position, the entire bed frame 10 can be folded to reduce the volume of the bed frame 10, which is convenient for easy storage and transportation. Since the armrest tube mechanism 120 is at least partially parallel to the horizontal plane when it is in the folded position, the crib cover 1200 (such as a cloth cover)installed on the armrest tube mechanism 120 tends to be flat when the armrest tube mechanism 120 is in the folded position, and fits better with the armrest tube mechanism 120, thereby making the bed frame 10 covered with the crib cover 1200 more neat in appearance.

[0074] In some embodiments, a plurality of first columns 111 and a plurality of second columns 112 are provided. The plurality of first columns 111 and the plurality of second columns 112 are alternately arranged along the circumference, and the armrest tube mechanism 120 is disposed between the first column 111 and the second column 112 that are adjacent to each other. In this way, when each armrest tube mechanism 120 is in the folded position, the first columns 111, the armrest tube mechanisms 120 and the second columns 112 are sequentially connected and enclose a ringshaped structure. It should be understood that the “plurality of’ used in this application means at least two.

[0075] Specifically, referring to FIG. 5, two first columns 111 and two second columns 112 are provided, and four armrest tube mechanisms 120 are provided. When each of the armrest tube mechanisms 120 is in the unfolded position, the first columns 111 are respectively connected to the second columns 112 through the armrest tube mechanisms 120 to form a rectangular bed frame 10. Referring to FIGS. 5 to 8, in some embodiments, the armrest tube mechanism 120 includes a first armrest tube assembly 121. The first armrest tube assembly 121 includes a first armrest tube 122. The first armrest tube 122 has a first pivoting end 1221 A and a first sliding end 1221B. The first pivoting end 1221 A is pivotally connected to the first column 111 or the second column 112. The first sliding end 1221B is pivotally and slidably connected to the second column 112 or the first column 111. In other words, when the first pivoting end 1221 A is pivotally connected to one of the first column 111 and the second column 112, the first sliding end 1221B is pivotally and slidably connected to another of the first column 111 and the second column 112. When the armrest tube mechanism 120 is in the unfolded position, the first column 111 and the second column 112 are away from each other (see FIGS. 5 and 6), and the corresponding first armrest tube 122 is at least partially parallel to the horizontal plane.

[0076] Referring to FIGS. 6 and 7, in some embodiments, the first armrest tube 122 includes a first tube segment 1222 and a second tube segment 1223 that are connected to each other and arranged at an angle to each other. A first end of the first tube segment 1222 away from the second tube segment 1223 is the first pivoting end 1221 A, and an end of the second tube segment 1223 away from the firsttube segment 1222 is the first sliding end 1221B. The first pivoting end 1221A and the first sliding end 1221B are respectively disposed at the ends of the whole tube segments, which is beneficial to improve the convenience of connecting the first armrest tube 122 to the first column 111 and the second column 112. In addition, when the armrest tube mechanism 120 is in the unfolded position, the first armrest tube 122 has the maximum unfolded length, so that the distance between the first column 111 and the second column 112 reaches the maximum, thereby making the bed frame 10 in the unfolded state have a larger accommodation space to support the crib cover 1200, increasing the area of the crib cover 1200 in the unfolded position, and providing a larger space for the child to rest or entertain. More specifically, referring to FIGS. 6 and 7, when the armrest tube mechanism 120 is in the unfolded position, the first tube segment 1222 is parallel to the horizontal plane, and the second tube segment 1223 extends downward from a second end of the first tube segment 1222.

[0077] In some embodiments, an angle a between the first tube segment 1222 and the second tube segment 1223 is greater than 90°.

[0078] More specifically, in some embodiments, the angle a between the first tube segment 1222 and the second tube segment 1223 is 150°. In some alternative embodiments, the angle a between the first tube segment 1222 and the second tube segment 1223 can also be 100°, 120° or 140°, etc., which is not specifically limited herein.

[0079] In order to improve the convenience of connecting the first armrest tube 122 to the first column 111 and the second column 112, and to improve the convenience of switching the first armrest tube 122 between the unfolded position and the folded position, referring to FIGS. 6 and 8, in some embodiments, the bed frame 10 further includes a corner member 130. More specifically, in some embodiments, the first column 111 or the second column 112 is provided with a comer member 130. The corner member 130 has a first pivot part QI. The first pivot part QI is configured to pivotally connected to the first pivoting end 1221 A.

[0080] Furthermore, in some embodiments, the bed frame 10 further includes a sliding member 140. The sliding member 140 is slidably disposed on the first column 111 or the second column 112. The sliding member 140 has a second pivot part Q2. The second pivot part Q2 is configured to be pivotally connected to the first sliding end 1221B. When the comer member 130 connected to a first armrest tube 122 is disposed on one of the first column 111 and the second column 112, the sliding member 140 connected to the first armrest tube 122 is disposed on another of the first column 111and the second column 112. When the user needs to switch the bed frame 10 from the unfolded state to the folded state, that is, when the armrest tube mechanism 120 is switched from the unfolded position to the folded position (from the state shown in FIG. 6 to the state shown in FIG. 8), the user pushes or pulls the sliding member 140, so that the sliding member 140 drives the first sliding end 1221B of the first armrest tube 122 to move downward (in a direction Fl) along the corresponding first column 111 or second column 112, thereby allowing the first sliding end 1221B of the first armrest tube 122 to rotate at the second pivot part Q2 of the sliding member 140, and allowing the first pivoting end 1221 A of the first armrest tube 122 to rotate at the first pivot part QI of the corner member 130, thereby driving the first column 111 and the second column 112 to move approaching each other. When the user needs to switch the bed frame 10 from the folded state to the unfolded state, that is, when the armrest tube mechanism 120 is switched from the folded position to the unfolded position (from the state shown in FIG. 8 to the state shown in FIG. 6), the sliding member 140 is pushed so that the sliding member 140 drives the first sliding end 1221B of the first armrest tube 122 to move upward (in a direction F2) along the corresponding first column 111 or the second column 112, thereby allowing the first sliding end 1221B of the first armrest tube 122 to rotate at the second pivot part Q2 of the sliding member 140, and allowing the first pivoting end 1221 A of the first armrest tube 122 to rotate at the first pivot part QI of the comer member 130, thereby driving the first column 111 and the second column 112 to move away from each other.

[0081] More specifically, in some embodiments, as shown in FIGS. 5 and 6, in the ring-shaped bed frame 10 enclosed by connecting the plurality of first columns 111, the plurality of second columns 112, and the plurality of first armrest tube assemblies 121, each corner member 130 disposed on the first column 111 or the second column 112 includes a first corner part 131 and a second corner part 132. The first corner part 131 and the second corner part 132 are connected to each other and are arranged at an angle to each other. The first corner part 131 and the second comer part 132 are each provided with the first pivot part QI. The first pivot part QI is configured to be pivotally connected to the first pivoting end 1221 A of the first armrest tube 122. Similarly, each sliding member 140 on the second column 112 or the first column 111 may also include a first sliding part 141 and a second sliding part 142. The first sliding part 141 and the second sliding part 142 are connected to each other and are arranged at an angle to each other. The first sliding part 141 and the second sliding part 142 are each provided with the second pivot part Q2. The second pivot part Q2 is configured to bepivotally connected to the first sliding end 1221B of the first armrest tube 122. Thus, when the sliding member 140 slides on the second column 112 or the first column 111, the first sliding ends 1221B of the two first armrest tubes 122 connected to the same sliding member 140 will slide up and down with the sliding member 140 and pivot relative to the sliding member 140. In addition, the first pivoting ends 1221 A of the two first armrest tubes 122 connected to the same corner member 130 will pivot relative to the comer member 130.

[0082] Referring to FIGS. 5 to 8, in this embodiment, the first armrest tube assembly 121 includes two first armrest tubes 122. The first pivoting end 1221A of one of the first armrest tubes 122 is pivotally connected to the first column 111, and the first sliding end 1221B of the one of the first armrest tubes 122 is pivotally and slidably connected to the second column 112. The first pivoting end 1221 A of another of the first armrest tubes 122 is pivotally connected to the second column 112, and the first sliding end 1221B of the other of the first armrest tube 122 is slidably and pivotally connected to the first column 111. In other words, when the first armrest tube assembly 121 includes two first armrest tubes 122, the first pivoting end 1221A of one of the first armrest tubes 122 is pivotally connected to the first column 111, and the first sliding end 1221B of this first armrest tube 122 is pivotally and slidably connected to the second column 112; while the first pivoting end 1221 A of the other of the first armrest tubes 122 is pivotally connected to the second column 112, and the first sliding end 1221B of such first armrest tube 122 is slidably and pivotally connected to the first column 111. More specifically, when the armrest tube mechanism 120 is in the unfolded position, the two first armrest tubes 122 of the first armrest tube assembly 121 are disposed side by side in the horizontal direction, and the projections of the first tube segments 1222 of the two first armrest tubes 122 onto a vertical plane that is perpendicular to the horizontal plane and parallel to the LR direction (i.e., the left-right direction) are at least partially overlapped (see FIG. 7).

[0083] The phrase “the two first armrest tubes 122 are disposed side by side in the horizontal direction, and the projections of the first tube segments 1222 of the two first armrest tubes 122 onto the vertical plane that is perpendicular to the horizontal plane and parallel to the LR direction (i.e., the left-right direction) are at least partially overlapped” as described above is illustrated below with reference to FIGS. 5 and 7.

[0084] FIG. 5 schematically shows the bed frame 10 including two first columns 111 and two second columns 112 and the armrest tube mechanisms 120 in this embodiment. When the bed frame10 is in the unfolded state, the bed frame 10 has a substantially square horizontal cross- section, and any opposite sides of four sides of the bed frame 10 are substantially symmetrical. Referring to FIGS. 5 and 7, taking one of the first columns 111 and one of the second columns 112 that disposed in the left-right direction as an example, when the two first armrest tubes 122 respectively disposed between the first column 111 and the second column 112 are in the unfolded position, the first tube segments 1222 of the two first armrest tubes 122 are disposed parallel to each other in the horizontal direction (specifically, in the front-back direction), and the two first tube segments 1222 are partially overlapped in the front -back direction. Alternatively, taking one of the first columns 111 and one of the second columns 112 that are disposed in the front-back direction as an example, when the two first armrest tubes 122 respectively disposed between the first column 111 and the second column 112 are in the unfolded position, the first tube segments 1222 of the two first armrest tubes 122 are disposed parallel to each other in the horizontal direction (specifically, in the left-right direction), and the two first tube segments 1222 are partially overlapped in the left-right direction.

[0085] It should be noted that, unless otherwise clearly specified and limited, the orientation terms such as "front", "back", "left", and "right" of the bed frame 10 in the various embodiments of the present application are based on the "front", "back", "left", and "right" directions of the bed frame 10 shown in the figures, and the arrows B and P are used to schematically indicate the "front" and "back" directions, and the arrows L and R are used to schematically indicate the "left" and "right" directions. These orientation terms are only used to make the description of the embodiments of the present application clearer, and are not used to unduly limit the scope of protection of the present application.

[0086] Referring to FIGS. 5 and 6, in some embodiments, the comer member 130 is disposed on each of the first column 111 and the second column 112. Each corner member 130 includes the first corner part 131 and the second corner part 132. The first corner part 131 and the second corner part 132 are connected to each other and arranged at an angle to each other. The first corner part 131 and the second corner part 132 are each provided with the first pivot part QI. The first pivot part QI is configured to pivotally connected to the first pivoting end 1221 A of the first armrest tube 122.

[0087] Continuing to refer to FIGS. 5 and 6, in some embodiments, the sliding member 140 is slidably disposed on each of the first column 111 and the second column 112. The sliding member 140 can slide up and down on the first column 111 and the second column 112. Each sliding member 140 includes the first sliding part 141 and the second sliding part 142. The first sliding part 141 andthe second sliding part 142 are connected to each other and arranged at an angle to each other. The first sliding part 141 and the second sliding part 142 are each provided with the second pivot part Q2. The second pivot part Q2 is configured to pivotally connected to the first sliding end 1221B of the first armrest tube 122. When each first armrest tube assembly 121 is switched from the folded position to the folded position, the sliding members 140 positioned on each first column 111 and each second column 112 moves downward (in the direction Fl) along the corresponding first column 111 and second column 112, the first sliding end 1221B of each first armrest tube 122 pivots relative to the second pivot part Q2 of the sliding member 140, and the first pivoting end 1221 A of each first armrest tube 122 pivots relative to the first pivot part QI of the corner member 130, so that the first columns 111 and the second columns 112 can be brought closer to each other, and the bed frame 10 is switched from the unfolded state to the folded state. When each first armrest tube assembly 121 is switched from the folded position to the unfolded position, the sliding members 140 positioned on each first column 111 and each second column 112 move upward (in direction F2) along the corresponding first column 111 and second column 112, the first sliding end 1221B of each first armrest tube 122 pivots relative to the second pivot part Q2 of the sliding member 140, and the first pivoting end 1221 A of each first armrest tube 122 pivots relative to the first pivot part QI of the comer member 130, so that the first columns 111 and the second columns 112 can move away from each other, so that the bed frame 10 can be switched from the folded state to the unfolded state.

[0088] Referring to FIGS. 6 and 9, in some embodiments, the corner member 130 includes a locking mechanism 150. When the armrest tube mechanism 120 is in the unfolded position, the locking mechanism 150 can be locked with the sliding member 140 to limit the sliding member 140 from sliding relative to the column 110, so that the bed frame 10 remains in the unfolded state.

[0089] Continuing to refer to FIGS. 6 and 9, in some embodiments, the locking mechanism 150 includes a locking member 151 pivotally connected to the corner member 130. Specifically, the corner member 130 has a support base 133. The locking member 151 is pivotally connected to the support base 133. The locking member 151 has an operating end 1511 and a locking end 1512. The sliding member 140 is provided with a locking mating part 143. The locking member 151 is pivotable between a locked position and an unlocked position. When the locking member 151 is in the locked position, the locking end 1512 can be locked and matches with the locking mating part 143. When the locking member 151 is in the unlocked position, the locking end 1512 can be unlocked from thelocking mating part 143. More specifically, the pivot point between the locking member 151 and the support base 133 is positioned between the operating end 1511 and the locking end 1512, so that the locking member 151 is roughly in a "seesaw" structure when pivoting on the support base 133, that is, the operating end 1511 is pressed to rotate to make the operating end 1511 approach the center of the first column 111 or the second column 112, so that when the locking member 151 is rotated, the locking end 1512 is raised up to be away from the center of the first column 111 or the second column 112. In other embodiments, the locking member 151 can also be configured to pull the operating end 1511 to unlock the locking end 1512 from the locking mating part 143.

[0090] Further, referring to FIG. 9, in some embodiments, the locking mechanism 150 further includes a reset member 152. The operating end 1511 is operable to pivot the locking member 151 from the locked position to the unlocked position. The reset member 152 is configured to bias the operating end 1511 to pivot the locking member 151 toward the locked position. The reset member 152 is, for example, a spring, which abuts against the operating end 1511 and provides a reset force for the operating end 1511 to move away from the center of the first column 111 or the second column 112. When the user needs to switch the locking member 151 from the locked position to the unlocked position, the user only needs to press the operating end 1511, and the locking end 1512 is raised up to be away from the center of the first column 111 or the second column 112, thereby disengaging the locking end 1512 from the locking mating part 143. Under the action of the reset member 152, the user only needs to release the operating end 1511 to switch the locking member 151 from the unlocked position to the locked position.

[0091] Optionally, in other embodiments, the support base 133 may be omitted, and the locking member 151 is directly pivotally connected to the corner member 130 (see FIG. 32). Specifically, a mounting base 134 is disposed on the comer member 130. Apressing channel 1341 is disposed in the mounting base 134. The operating end 1511 of the locking member 151 extends into the mounting base 134 and is accommodated in the pressing channel 1341. More specifically, the pressing channel 1341 runs through the mounting base 134 along its length direction, and a button 153 is movably disposed in the pressing channel 1341. The button 153 is positioned on a side of the operating end 1511 facing away from the column 110, and abuts against the operating end 1511. In this way, the user can directly push the operating end 1511 to rotate around the pivot point between the locking member 151 and the corner member 130 by horizontally pressing the button 153, so that the lockingend 1512 is raised up to be disengaged from the locking mating part 143. In this way, the user only needs to horizontally press the button 153 to drive the locking member 151 to rotate, without pressing and rotating the operating end 1511, and the operation is more convenient and quick.

[0092] In some alternative embodiments, the locking mechanism 150 can be implemented in many ways, and which is not limited herein, as long as the sliding member 140 can be locked.

[0093] Referring to FIGS. 5 to 9, in some embodiments, the first armrest tube assembly 121 further includes a rotating connection mechanism 123. The two first armrest tubes 122 are pivotally connected by the rotating connection mechanism 123. Specifically, when the first armrest tube assembly 121 includes two first armrest tubes 122, the two first armrest tubes 122 are rotationally connected by the rotating connection mechanism 123. When the sliding member 140 disposed on one of the first armrest tubes 122 moves downward along the first column 111 or the second column 112, the first sliding end 122B of such first armrest tube 122 moves downward, so that the first armrest tube 122 is inclined and has a tendency to move downward. In this case, the rotating connection mechanism 123 also moves downward, driven by the first armrest tube 122. Under the action of the rotating connection mechanism 123, another of the first armrest tubes 122 can be driven to have a tendency to move downward, and then the sliding member 140 disposed on the other of the first armrest tubes 122 can be moved downward relative to the second column 112 or the first column 111. It can be seen that the rotating connection mechanism 123 has a linkage effect, which can make the two first armrest tubes 122 between the adjacent first columns 111 and the second columns 112 rotate synchronously. By disposing the rotating connection mechanism 123, the user can only push or pull a single sliding member 140 downward to cause all the armrest tube mechanisms 120 to be folded, thereby realizing the folding of the entire crib 1000.

[0094] Specifically, the rotating connection mechanism 123 is connected to the first tube segments 1222 of the two first armrest tubes 122. When the two first armrest tubes 122 are in the unfolded position, the two first tube segments 1222 have overlapping areas. Further, when the armrest tube mechanism 120 is in the unfolded position, that is, when the two first armrest tubes 122 are in the unfolded position, the rotating connection mechanism 123 is positioned below each first tube segment 1222. In this way, it is possible to avoid the rotating connection mechanism 123 from protruding from the horizontal plane where the first armrest tubes 122 are positioned, causing problems such as the crib cover 1200 not fitting well.

[0095] It should be noted that the case where “when the two first armrest tubes 122 are in the unfolded position, the rotating connection mechanism 123 is positioned below each first tube segment 1222” means that when the armrest tube mechanism 120 is in the unfolded position, when viewed in a direction in which a first connecting part 12311 (see FIG. 7) and a second connecting part 12312 (see FIG. 7) are disposed on the rotating connection mechanism 123, the height of the end of the rotating connection mechanism 123 provided with the first connecting part 12311 is lower than the height of the upper surface of the first tube segment 1222. In other words, the end of the rotating connection mechanism 123 provided with the first connecting part 12311 does not protrude from the horizontal plane where the upper surface of the first tube segment 1222 is positioned, thereby improving the fit of the crib cover 1200 on the armrest tube mechanism 120.

[0096] Referring to FIGS. 6 to 8, in some embodiments, the rotating connection mechanism 123 includes a rotating member 1231. Two rotating members 1231 are provided. Each rotating member 1231 is provided with a first connecting part 12311 and a second connecting part 12312. Each first armrest tube 122 is connected to the first connecting part 12311 of the corresponding rotating member 1231. The two second connecting parts 12312 are rotatably connected. When the two first armrest tubes 122 of the first armrest tube assembly 121 are in the unfolded position, the two rotating members 1231 are overlapped onto each other. When the two first armrest tubes 122 of the first armrest tube assembly 121 switch from the unfolded position to the folded position, the two rotating members 1231 rotate with respect to each other through the second connecting part 12312, so that a certain angle is formed between the two rotating members 1231. Specifically, during the first column 111 and the second column 112 approach each other, the angle between the two rotating members 1231 gradually increases.

[0097] Specifically, in some embodiments, as shown in FIG. 10, the rotating member 1231 includes a first clamping plate 12313, a connecting plate 12314 and a second clamping plate 12315. The connecting plate 12314 is connected between the first clamping plate 12313 and the second clamping plate 12315. The first clamping plate 12313, the connecting plate 12314 and the second clamping plate 12315 enclose a clamping groove 12316 (see FIG. 10), so that the rotating member 1231 is generally in a U-shaped structure. The first clamping plate 12313 and the second clamping plate 12315 are each provided with the first connecting part 12311 and the second connecting part 12312. The first connecting part 12311 is closer to an opening of the clamping groove 12316 than thesecond connecting part 12312. The first armrest tube 122 is limited into the clamping groove 12316 and is connected to the two first connecting parts 12311. More specifically, the first connecting part 12311 and the second connecting part 12312 are both limiting holes. The first armrest tube 122 is placed in the clamping groove 12316, and a connecting member such as a screw or a bolt extends through the limiting holes (i.e., the first connecting parts 12311) to be connected to the first armrest tube 122, so that the first armrest tube 122 can be stably installed on the rotating member 1231. Furthermore, the two rotating members 1231 can be rotatably connected by a rotating shaft or the like extending through the limiting holes (i.e., the second connecting parts 12312).

[0098] Referring to FIG. 10, in some embodiments, the rotating member 1231 further includes a reinforcing rib 12317. The first clamping plate 12313 and the second clamping plate 12315 are each provided with the reinforcing rib 12317. The reinforcing rib 12317 on the first clamping plate 12313 extends toward the second clamping plate 12315, and the reinforcing rib 12317 on the second clamping plate 12315 extends toward the first clamping plate 12313. The structural strength of the rotating member 1231 can be improved as a whole by disposing the reinforcing ribs 12317. In addition, an end of each reinforcing rib 12317 adjacent to the opening of the clamping groove 12316 can be used to support the first armrest tube 122 (see FIG. 7) limited into the clamping groove 12316.

[0099] Referring to FIGS. 11 and 12, in some alternative embodiments, the rotating connection mechanism 123 includes two rotating connection parts 1232, each of which includes a clamping plate 12321 and a connecting post 12322 fixed to the clamping plate 12321. The clamping plate 12321 is provided with the first connecting part 12311. The two first armrest tubes 122 are respectively connected to the first connecting parts 12311 of the two rotating connection parts 1232, and are pivotally connected to each other through the connecting posts 12322 of the two rotating connection parts 1232.

[0100] Continuing to refer to FIG. 11 and FIG. 12, the clamping plates 12321 of the two rotating connection parts 1232 and the connecting posts 12322 of the two rotating connection parts 1232 enclose the clamping groove 12316. The two first armrest tubes 122 are limited in the clamping groove 12316 and are connected to the corresponding first connecting parts 12311. Alternatively, one of the two first armrest tubes 122 is positioned in the clamping groove 12316 and is connected to the corresponding first connecting part 12311, and another of the two first armrest tubes 122 is positioned outside the clamping groove 12316 and is connected to the corresponding first connecting part 12311.Alternatively, both of the two first armrest tubes 122 are positioned outside the clamping groove 12316 and are connected to the respective first connecting parts 12311.

[0101] Referring to FIGS. 13 and 14, in some embodiments, the bed frame 10 further includes a first protective component 160. Specifically, the first protective component 160 is disposed on the first armrest tubes 122 and is positioned at the pivotal connection between the two first armrest tubes 122, that is, positioned at the connection portion between the first armrest tube 122 and the rotating connection mechanism 123. When the armrest tube mechanism 120 is switched from the unfolded position to the folded position, the two first armrest tubes 122 pivot relative to the rotating connection mechanism 123 respectively, and the two first armrest tubes 122 and the rotating connection mechanism 123 enclose a first trapped region 127 (see FIG. 8). The first protective component 160 is configured to shield the first trapped region 127 (see FIG. 8 and FIG. 14 for comparison). In this way, when the user folds the bed frame 10, not only can the crib cover 1200 be prevented from entering the first trapped region 127, thereby avoiding impeding folding smoothness of the bed frame 10, but also the user’s hand can be prevented from accidentally entering the first trapped region 127, thereby preventing possible pinching and injuries.

[0102] In an embodiment, at least one of the two first armrest tubes 122 between the first column 111 and the second column 112 is provided with the first protective component 160. In other words, any one of the first armrest tubes 122 may be provided with the first protective component 160, or both of the first armrest tubes 122 may be provided with the first protective component 160.

[0103] Referring to FIGS. 14 and 15, in some embodiments, the first protective component 160 includes a first protective plate 161 and a first protective connector 162 connected to each other. The first protective plate 161 is configured to shield the first trapped region 127. In this embodiment, the first protective plate 161 has a generally trapezoidal sheet structure. The first protective connector 162 is disposed at the base edge of the first protective plate 161. In this embodiment, the first protective plate 161 and the first protective connector 162 are integrally formed. In other embodiments, the first protective plate 161 and the first protective connector 162 can also be connected to each other by riveting, welding, etc. A first arc-shaped concave surface 1621 that can fit the outer wall of the first armrest tube 122 is formed on the side of the first protective connector 162 facing away from the first protective connector 162. In this embodiment, two first connecting protrusions are spaced apart from each other on a side of the first arc-shaped concave surface 1621,and each first connecting protrusion is provided with a first connecting hole 1622. In other embodiments, more than two or less than two first connecting protrusions and more than two or less than first connecting holes 1622 may be provided. The corresponding first armrest tube 122 is provided with two first fixing holes (not shown) respectively corresponding to the two first connecting holes 1622. Two fasteners (such as blind rivets, screws or rivets, etc.) respectively extend through the corresponding first connecting holes 1622 and the first fixing holes to connect the first protective component 160 to the first armrest tube 122. In this way, the stability of the first protective component 160 after installation can be improved. In other alternative embodiments, the first protective component 160 can also be connected to the first armrest tube 122 by engagement, or the first protective component 160 can also be integrally formed on the first armrest tube 122.

[0104] FIG. 16 a perspective view showing a bed frame 10 according to a second embodiment of the present application. Similar to the first embodiment as described above, the bed frame 10 includes a first column 111, a second column 112, and an armrest tube mechanism 120. The second column 112 is disposed parallel to the first column 111. The armrest tube mechanism 120 is movably connected between the first column 111 and the second column 112. The armrest tube mechanism 120 is switchable between a folded position (see FIGS. 16 and 17) and a folded position (see FIG. 19). When the armrest tube mechanism 120 is in the unfolded position, the armrest tube mechanism 120 is at least partially parallel to the horizontal plane.

[0105] Comparing the bed frame 10 of the first embodiment with the bed frame 10 of the second embodiment (see FIGS. 5 and 16), it can be seen that the armrest tube mechanism 120 of the bed frame 10 of the second embodiment is different from the armrest tube mechanism 120 of the bed frame 10 of the first embodiment.

[0106] Referring to FIG. 16, in some embodiments, the armrest tube mechanism 120 includes a second armrest tube assembly 124. The second armrest tube assembly 124 includes a second armrest tube 125 and a third armrest tube 126. Two second armrest tubes 125 and two third armrest tubes 126 are provided. Referring to FIG. 17, each second armrest tube 125 has a second pivoting end 1251 A and a second sliding end 125 IB. The two second pivoting ends 1251 A are pivotally connected to each other. The two second sliding ends 125 IB are slidably disposed on the first column 111 and the second column 112 respectively, and are pivotally connected to the first column 111 and the second column 112. Each third armrest tube 126 has a third pivoting end 1261 A and a fourth pivoting end 1261B.The two third pivoting ends 1261 A are pivotally connected to each other. The two fourth pivoting ends 126 IB are pivotally connected to the first column 111 and the second column 112 respectively. When the armrest tube mechanism 120 is in the unfolded position, at least a portion of each second armrest tube 125 and at least a portion of each third armrest tube 126 are parallel to the horizontal plane. Therefore, when the armrest tube mechanism 120 is in the unfolded position, the crib cover 1200 (such as a cloth cover) installed on the armrest tube mechanism 120 tends to be flat, so that the crib cover 1200 fits better with the armrest tube mechanism 120, thereby making the bed frame 10 covered with the crib cover 1200 more neat in appearance.

[0107] Referring to FIG. 18, in some embodiments, the second armrest tube 125 includes a third tube segment 1252 and a fourth tube segment 1253 that are connected to each other and arranged at an angle to each other. A first end of the third tube segment 1252 away from the fourth tube segment 1253 is the second pivoting end 1251 A, and a first end of the fourth tube segment 1253 away from the third tube segment 1252 is the second sliding end 125 IB. In addition, the third armrest tube 126 includes a fifth tube segment 1262 and a sixth tube segment 1263 that are connected to each other and arranged at an angle to each other. A first end of the fifth tube segment 1262 away from the sixth tube segment 1263 is the fourth pivoting end 1261B, and a first end of the sixth tube segment 1263 away from the fifth tube segment 1262 is the third pivoting end 1261A. When the armrest tube mechanism 120 is in the unfolded position, each third tube segment 1252 and each fifth tube segment 1262 are positioned in the same horizontal plane, and the fourth tube segment 1253 extends downward from a second end of the third tube segment 1252, and the sixth tube segment 1263 extends downward from a second end of the fifth tube segment 1262. The second armrest tube 125 and the third armrest tube 126 both of which are connected to either of the first column 111 or the second column 112 are disposed side by side in the horizontal direction, and the projection of the fifth tube segment 1262 and the third tube segment 1252 onto a vertical plane that is perpendicular to the horizontal plane and parallel to the front-back direction (the BP direction) are partially overlapped.

[0108] The phrase “the second armrest tube 125 and the third armrest tube 126 both of which are connected to either of the first column 111 or the second column 112 are disposed side by side in the horizontal direction, and the projections of the fifth tube segment 1262 and the third tube segment 1252 onto a vertical plane that is perpendicular to the horizontal plane and parallel to the front-back direction are partially overlapped” as described above is illustrated below with reference to FIGS. 16and 18.

[0109] FIG. 16 schematically shows the bed frame 10 including two first columns 111 and two second columns 112 and armrest tube mechanisms 120 in this embodiment. When the bed frame 10 is in the unfolded state, the bed frame 10 has a substantially square horizontal cross-section, and any opposite sides of four sides of the bed frame 10 are substantially symmetrical. In this embodiment, taking one of the first columns 111 and one of the second columns 112 that are disposed in the front- back direction as an example, when the two second armrest tubes 125 and the two third armrest tubes 126 that are disposed between the first column 111 and the second column 112 are in the unfolded position, the second armrest tubes 125 and the third armrest tubes 126 are disposed side by side in the horizontal direction (specifically, in the left-right direction), and the third tube segment 1252 of the second armrest tube 125 and the fifth tube segment 1262 of the third armrest tube 126 are partially overlapped in the left-right direction (see FIGS. 16 and 18).

[0110] Referring to FIGS. 16 and 18, in some embodiments, the second pivoting ends 1251A of the two third tube segments 1252 are disposed side by side in the horizontal direction, and the projections of the second pivoting ends 1251 A onto a vertical plane that is perpendicular to the horizontal plane parallel to the front-back direction are partially overlapped. Specifically, taking one of the first columns 111 and one of the second columns 112 that are disposed in the front-back direction as an example, when the two second armrest tubes 125 disposed between the first column 111 and the second column 112 are in the unfolded position, the second pivoting ends 1251 A of the corresponding two third tube segments 1252 are disposed side by side in the horizontal direction (specifically, in the left-right direction), and the second pivoting ends 1251 A of the corresponding two third tube segments 1252 are partially overlapped in the left-right direction.[OHl] In some embodiments, the angle a between the third tube segment 1252 and the fourth tube segment 1253 is greater than 90°.

[0112] More specifically, in some embodiments, the angle a between the third tube segment 1252 and the fourth tube segment 1253 is 150°. In some alternative embodiments, the angle a between the third tube segment 1252 and the fourth tube segment 1253 can also be 100°, 120°, or 140°, etc., which is not specifically limited hereto.

[0113] In some embodiments, the angle a (not shown) between the fifth tube segment 1262 and the sixth tube segment 1263 is greater than 90°.

[0114] More specifically, in some embodiments, the angle a between the fifth tube segment 1262 and the sixth tube segment 1263 is 150°. In some alternative embodiments, the angle a between the fifth tube segment 1262 and the sixth tube segment 1263 can also be 100°, 120°, or 140°, etc., which is not specifically limited hereto.

[0115] Referring to FIGS. 16 and 18, the second armrest tube assembly 124, for example, further includes the rotating connection mechanism 123 as described in the first embodiment. Specifically, the rotating connection mechanism 123 is connected to the second armrest tube 125 and the third armrest tube 126. In this embodiment, one second armrest tube assembly 124 includes two rotating connection mechanisms 123. In a direction in which the second armrest tube 125 and the third armrest tube 126 are parallel to each other, the second armrest tube 125 and the third armrest tube 126 facing each other are connected by the rotating connection mechanism 123.]]]]

[0116] Referring to FIG. 16, in some embodiments, the bed frame 10, for example, further includes the corner member 130 including the locking mechanism 150, and the sliding member 140 as described in the first embodiment. Referring to the first embodiment, each first column 111 and each second column 112 are provided with the comer member 130 and the sliding member 140.

[0117] Specifically, the corner member 130 includes the first corner part 131 and the second corner part 132. The first corner part 131 and the second corner part 132 are connected to each other and are arranged at an angle to each other. The first corner part 131 and the second comer part 132 are each provided with the first pivot part QI. The first pivot part QI is pivotally connected to the fourth pivoting end 1261B. Specifically, the sliding member 140 includes the first sliding part 141 and the second sliding part 142. The first sliding part 141 and the second sliding part 142 are connected to each other and are arranged at an angle to each other. The first sliding part 141 and the second sliding part 142 are each provided with the second pivot part Q2. The second pivot part Q2 is pivotally connected to the second sliding end 125 IB.

[0118] During use of the bed frame 10 in this embodiment, when the user needs to switch the bed frame 10 from the unfolded state to the folded state, that is, when the armrest tube mechanisms 120 are switched from the unfolded position to the folded position (from the state shown in FIG. 17 to the state shown in FIG. 19), the armrest tube mechanism 120 disposed between the first column 111 and the second column 112 can be taken as an example to illustrate the working process of the armrest tube mechanisms 120.

[0119] Referring to FIGS. 17 to 19, the user pushes or pulls the sliding member 140, so that the sliding member 140 drives the second sliding end 125 IB of the corresponding second armrest tube 125 to move downward (in the direction Fl) along the corresponding first column 111 and second column 112. Since in the unfolded state, each third tube segment 1252 is disposed horizontally, the fourth tube segment 1253 extends downward from the second end of the third tube segment 1252, and the fifth tube segment 1262 is disposed horizontally, and the sixth tube segment 1263 extends downward from the second end of the fifth tube segment 1262, so when the second sliding end 125 IB moves downward with the sliding member 140, the second armrest tubes 125 pivot, and the two second pivoting ends 1251 A rotate relative to each other, so that the two second armrest tubes 125 approach each other. At the same time, the rotating connection mechanism 123 moves downward with the second armrest tube 125. Under the linkage of the rotating connection mechanism 123, the third armrest tube 126 has a tendency to rotate downward relative to the corresponding corner member 130, and the two third pivoting ends 1261 A rotate with respect to each other, so that the two third armrest tubes 126 approach each other, and finally, the first column 111 and the second column 112 approach each other. By disposing the rotating connection mechanism 123, the user can only push or pull a single sliding member 140 downward to make all the armrest tube mechanisms 120 folded, thereby achieving the folding of the entire crib 1000.

[0120] During use of the bed frame 10 in this embodiment, when the user needs to switch the bed frame 10 from the folded state to the unfolded state, that is, when the armrest tube mechanisms 120 are switched from the folded position to the unfolded position (from the state shown in FIG. 19 to the state shown in FIG. 17), the armrest tube mechanism 120 disposed between the first column 111 and the second column 112 can be taken as an example to illustrate the working process of the armrest tube mechanisms 120.

[0121] Referring to FIG. 19, the user pushes the sliding members 140, so that the sliding members 140 respectively drive the second sliding ends 125 IB of the second armrest tubes 125 to move upward along the corresponding first column 111 and second column 112. In this case, the two second armrest tubes 125 move away from each other and push the first column 111 and the second column 112 to be away from each other. In this process, the fourth pivoting ends 1261B of the two third armrest tubes 126 rotate upward relative to the first pivot part QI, and the two third armrest tubes 126 move away from each other and also push the first column 111 and second column 112 to be away fromeach other. When the two second armrest tubes 125 and the two third armrest tubes 126 are fully unfolded, the sliding members 140 can be respectively locked on the first column 111 and the second column 112 by the locking mechanism 150.

[0122] Referring to FIGS. 20 to 22, the bed frame 10 according to the second embodiment may further include a second protective component 170. FIG. 20 shows a partial structure of the bed frame 10, in which the second armrest tube assembly 124 is in the folded position; FIG. 21 shows the bed frame 10 in FIG. 20, in which the second armrest tube assembly 124 is in a transition position between the folded position and the folded position; and FIG. 22 shows the bed frame 10 in FIG. 20, in which the second armrest tube assembly 124 is in the folded position. In this embodiment, the second protective component 170 is disposed on each second armrest tube 125 and / or each third armrest tube 126. In other words, the second protective component 170 may be disposed only on each second armrest tube 125; or, disposed only on each third armrest tube 126; or, may be disposed on both the second armrest tube 125 and the third armrest tube 126. Further, the second protective component 170 is positioned at the pivotal connection between the second armrest tube 125 and the third armrest tube 126 both of which are connected to either of the first column 111 or the second column 112, that is, positioned at the connection portion between the second armrest tube 125 and the rotating connection mechanism 123, and / or at the connection portion between the third armrest tube 126 and the rotating connection mechanism 123. When the armrest tube mechanism 120 is switched from the unfolded position to the folded position, the second armrest tube 125 and the third armrest tube 126 both of which are connected to either of the first column 111 or the second column 112 are respectively pivoted relative to the corresponding rotating connection mechanism 123, and the second armrest tube 125, the third armrest tube 126 and the corresponding rotating connection mechanism 123 enclose a second trapped region 128 (see FIG. 19). The second protective component 170 is configured to shield the second trapped region 128 (see FIG. 19 and FIG. 22 for comparison). In this way, when the user folds the bed frame 10, not only can the crib cover 1200 be prevented from entering the second trapped region 128, thereby avoiding impeding the folding smoothness of the bed frame 10, but also the user’s hand can also be prevented from accidentally entering the second trapped region 128, thereby preventing possible pinching and injuries.

[0123] As shown in FIG. 19, when the armrest tube mechanism 120 is switched from the unfolded position to the folded position, the two sixth tube segments 1263 pivot with respect to each other andgradually enclose a third trapped region 129. Specifically, the third trapped region 129 refers to the region enclosed by the inner sides of the two sixth tube segments 1263. Specifically, as shown in FIGS. 20 to 22, in this embodiment, the second protective component 170 is disposed on each third armrest tube 126. When the second protective component 170 is disposed on each third armrest tube 126, the second protection plate 170 extends from the fifth tube segment 1262 to the sixth tube segment 1263, so that the second protective component 170 is also configured to shield the third trapped region 129 (see FIGS. 19 and 22). In this way, not only can the crib cover 1200 be prevented from entering the third trapped region 129, but also the hand can be prevented from accidentally entering the third trapped region 129.

[0124] Specifically, as shown in FIG. 23, the second protective component 170 of the bed frame 10 in the second embodiment includes a second protective plate 171 and a second protective connector 172 that are connected to each other. The second protective plate 171 is configured to shield the second trapped region 128 and the third trapped region 129. In this embodiment, the second protective plate 171 has a generally trapezoidal sheet structure. The second protective connector 172 is disposed at the base edge and the side edge of a side of the second protective plate 171. In this embodiment, the second protective plate 171 and the second protective connector 172 are integrally formed. In other embodiments, the second protective plate 171 and the second protective connector 172 can also be connected by riveting, welding, etc. The side of the second protective connector 172 facing away from the second protective plate 171 has a second arc-shaped concave surface 1721 that can fit the outer wall of the second armrest tube 125 and / or the third armrest tube 126. In this embodiment, two second connecting protrusions are spaced apart from each other on a side of the second arc-shaped concave surface 1721, and each second connecting protrusion is provided with a second connecting hole 1722. In other embodiments, more than two or less than two second connecting protrusions and more than two or less than two second connecting holes 1722 may be provided. The corresponding second armrest tube 125 and / or third armrest tube 126 is provided with two second fixing holes (not shown) respectively corresponding to the two second connecting holes 1722. Two fasteners (such as blind rivets, screws or rivets, etc.) respectively extend through the corresponding second connecting holes 1722 and the second fixing holes to connect the second protective component 170 to the second armrest tube 125 and / or the third armrest tube 126. In this way, the stability of the second protective component 170 after installation can be improved. In otherembodiments, the second protection plate 170 can also be installed on the second armrest tube 125 and / or the third armrest tube 126 in other ways, for example, by engagement or the like, which is not specifically limited hereto.

[0125] As shown in FIGS. 17 and 18, when the armrest tube mechanism 120 is switched between the unfolded position and the folded position, the two sixth tube segments 1263 pivot with respect to each other and gradually enclose the third trapped region 129. Specifically, the third trapped region 129 refers to the region enclosed by the outer sides of the two sixth tube segments 1263. Optionally, in other alternative embodiments, the second protective plate 171 of the second protective component 170 can also be in other shapes. For example, the second protective plate 171 has a roughly rectangular sheet structure. As shown in FIGS. 27 and 28, in an embodiment, the second protective plate 171 includes a first plate body 1711 and a second plate body 1712 that are connected to each other. The first plate body 1711 has a roughly right-angled trapezoidal sheet structure, the second plate body 1712 has a roughly triangular sheet structure. The second plate body 1712 is disposed at the oblique side edge of the first plate body 1711, so that the entire second protective plate 171 is roughly rectangular. Thus, as shown in FIGS. 24 to 26, when the second protective plate 171 is installed on each third armrest tube 126, the first plate body 1711 can be configured to shield the second trapped region 128 and the third trapped region 129 at the same time, and the third trapped region 129 is always shielded. That is, the third trapped region 129 enclosed by the inner sides of the sixth tube segments 1263 and the third trapped region 129 enclosed by the outer sides of the sixth tube segments 1263 are both shielded (see FIGS. 18, 19, 22 and 26). Specifically, as shown in FIGS. 27 and 28, an arc groove 1713 is formed at the connection portion between the first plate body 1711 and the second plate body 1712. The arc groove 1713 is configured to adapt to the sixth tube segment 1263 and play a role of avoidance, so that after the second protective plate 171 is installed on the third armrest tube 126, the first plate body 1711 and the second plate body 1712 can be in the same vertical plane to respectively shield the third trapped region 129 enclosed by the inner sides of the sixth tube segments 1263 and the third trapped region 129 enclosed by the outer sides of the sixth tube segments 1263. Specifically, the second connecting hole 1722 is formed on each of the groove wall of the arc groove 1713 and the first plate body 1711. The two fasteners (such as blind rivets, screws or rivets) respectively extend through the corresponding second connecting holes 1722 to be connected to the sixth tube segment 1263 and the rotating connection mechanism 123 (such as the rotating member1231 or the clamping plate 12321), to connect the second protective component 170 to the third armrest tube 126.

[0126] It should be noted that the “inner side” of the sixth tube segment 1263 refers to the side of the sixth tube segment 1263 facing the angle less than 180 degrees formed between the sixth tube segment 1263 and the fifth tube segment 1262, and the “outer side” of the sixth tube segment 1263 refers to the side of the sixth tube segment 1263 facing away from the angle less than 180 degrees formed between the sixth tube segment 1263 and the fifth tube segment 1262. In other words, the “inner side” of the sixth tube segment 1263 refers to the lower side of the sixth tube segment 1263 when the armrest tube mechanism is in the unfolded state as shown in FIG. 24, and the “outer side” of the sixth tube segment 1263 refers to the upper side of the sixth tube segment 1263 when the armrest tube mechanism is in the unfolded state as shown in FIG. 24. Optionally, in some alternative embodiments, the armrest tube mechanism 120 includes the second armrest tube assembly 124. The second armrest tube assembly 124 may include only two second armrest tubes 125 as described above. Each second armrest tube 125 has the second pivoting end 1251 A and the second sliding end 125 IB. Two second pivoting ends 1251 A are pivotally connected to each other. Two second sliding ends 125 IB are slidably disposed on the first column 111 and the second column 112, respectively, and are pivotally connected to the first column 111 and the second column 112, respectively. When the armrest tube mechanism 120 is in the unfolded position, at least a portion of each second armrest tube 125 is parallel to the horizontal plane.

[0127] Optionally, in some other alternative embodiments, the armrest tube mechanism 120 includes the second armrest tube assembly 124. The second armrest tube assembly 124 may include only two third armrest tubes 126 as described above. Each third armrest tube 126 has the third pivoting end 1261 A and the fourth pivoting end 126 IB. Two third pivoting ends 1261 A are pivotally connected to each other. Two fourth pivoting ends 126 IB are respectively pivotally connected to the first column 111 and the second column 112. When the armrest tube mechanism 120 is in the unfolded position, at least a portion of each third armrest tube 126 is parallel to the horizontal plane.

[0128] FIG. 29 is a perspective view showing a bed frame 10 according to a third embodiment of the present application. The bed frame 10 has a configuration similar to the first embodiment or the second embodiment as described above. The bed frame 10 includes a plurality of columns 110 (which can be regarded as the first column 111 and the second column 112 in the first embodiment or thesecond embodiment) and a plurality of armrest tube mechanisms 120. More specifically, the plurality of columns 110 are spaced apart along the circumference, and the armrest tube mechanism 120 is movably connected between two adjacent columns 110. The armrest tube mechanism 120 can be switched between the unfolded position and the folded position, so that the bed frame 10 can be switched between the unfolded state and the folded state. When the armrest tube mechanism 120 is in the unfolded position, the armrest tube mechanism 120 is at least partially parallel to the horizontal plane. When the bed frame 10 is in the unfolded state, the plurality of columns 110 are away from each other (see FIG. 17), and when the bed frame 10 is in the folded state, the plurality of columns 110 are folded together.

[0129] In some examples of the third embodiment, the armrest tube mechanism 120 includes at least one of the first armrest tube assembly 121 and the second armrest tube assembly 124.

[0130] Specifically, the bed frame 10 in the third embodiment shown in FIG. 29 includes both the first armrest tube assembly 121 and the second armrest tube assembly 124. Specifically, for the first armrest tube assembly 121, reference may be made to the first armrest tube assembly 121 of the bed frame 10 in the first embodiment, and for the second armrest tube assembly 124, reference may be made to the second armrest tube assembly 124 of the bed frame 10 in the second embodiment.

[0131] In some embodiments, as shown in FIG. 29, the bed frame 10 includes four columns 110 spaced apart along the circumference. In order to clearly understand the armrest tube mechanisms 120 disposed between the columns 110, the four columns 110 may be referred to as the first column 111, the second column 112, a third column 113 and a fourth column 114 in sequence. The first armrest tube assembly 121 is disposed between the first column 111 and the second column 112, and between the third column 113 and the fourth column 114, and two first armrest tube assemblies 121 face each other. The second armrest tube assembly 124 is disposed between the first column 111 and the fourth column 114, and between the second column 112 and the third column 113, and two second armrest tube assemblies 124 face each other. When the bed frame 10 is in an unfolded state, the bed frame 10 is generally rectangular in shape.

[0132] Referring to FIG. 29, in some embodiments, the corner member 130 and the sliding member 140 are disposed on each of the first column 111, the second column 112, the third column 113, and the fourth column 114. The corner member 130 includes the first corner part 131 and the second corner part 132. The first corner part 131 and the second corner part 132 are connected to eachother and arranged at an angle to each other. The first comer part 131 and the second corner part 132 are both provided with the first pivot part QI. Specifically, one of the first pivot parts QI is pivotally connected to the first pivoting end 1221 A of the first armrest tube 122, and another of the first pivot parts QI is pivotally connected to the fourth pivoting end 1261B of the third armrest tube 126.

[0133] Continuing to refer to FIG. 29, in some embodiments, the sliding member 140 includes the first sliding part 141 and the second sliding part 142. The first sliding part 141 and the second sliding part 142 are connected to each other and arranged at an angle to each other. The first sliding part 141 and the second sliding part 142 are both provided with the second pivot part Q2. Specifically, one of the second pivot parts Q2 is pivotally connected to the first sliding end 1221B of the first armrest tube 122, and another of the second pivot part Q2 is pivotally connected to the second sliding end 1251B of the second armrest tube 125.

[0134] Referring to FIG. 30, further, in the third embodiment, the bed frame 10 includes both the first protective component 160 and the second protective component 170. Specifically, for the configuration of the first protective component 160, reference may be made to the first protective component 160 of the bed frame 10 in the first embodiment, and for the configuration of the second protective component 170, reference may be made to the second protective component 170 of the bed frame 10 in the second embodiment, which will not be repeatedly described hereto.

[0135] It should be noted that in the third embodiment, the second protective plate 171 of the second protective component 170 can have the trapezoidal sheet structure as described above (see FIGS. 23 and 30), or have the rectangular sheet structure as described above (see FIGS. 27 and 31).

[0136] Referring to FIGS. 33 and 34, a fourth embodiment of the present application further provides a bed frame 10, which is a modified example of the bed frame 10 shown in the first embodiment, and includes: a plurality of columns 110 and a plurality of armrest tube mechanisms 120. The plurality of columns 110 are spaced apart along the circumference. The armrest tube mechanism 120 is movably connected between each two adjacent columns 110. The armrest tube mechanism 120 includes at least one pair of armrest tubes. The pair of armrest tubes includes two armrest tubes, which intersect with each other and are pivotally connected to each other. Each armrest tube mechanism 120 is switchable between the unfolded position and the folded position, so that the bed frame 10 can be switched between the unfolded state and the folded state.

[0137] It should be noted that the “pair of armrest tubes” in the fourth embodiment may refer totwo first armrest tubes 122, but it should be noted that the two first armrest tubes 122 are straight tubes, that is, the first tube segment 1222 and the second tube segment 1223 are on the same straight line. In addition, compared with the bed frame 10 in the first embodiment, in the bed frame 10 in the fourth embodiment, the rotating connection mechanism 123 is omitted. That is, when two first armrest tubes 122 are disposed between the two columns 110, the two first armrest tubes 122 are pivotally connected to each other directly, instead of being pivotally connected to each other by the rotating connection mechanism 123.

[0138] Further, referring to FIGS. 35 and 36, the bed frame 10 in the fourth embodiment further includes a plurality of third protective components 180. Specifically, each pair of armrest tubes is provided with the third protective component 180. The third protective component 180 is installed on at least one of the armrest tubes and is positioned at the pivotal connection between the two armrest tubes. When each armrest tube mechanism 120 is switched between the unfolded position and the folded position, each third protective component 180 is configured to shield a fourth trapped region al (see FIG. 34) formed between two armrest tubes (i.e., two first armrest tubes 122) in the corresponding pair of armrest tubes. In this way, when this type of bed frame 10 is folded, it is also possible to prevent the crib cover 1200 or hands from accidentally entering the fourth trapped region al.

[0139] Specifically, referring to FIGS. 35 and 36, the third protective component 180 includes a third protective plate 181 and a third protective connector (not shown) that are connected to each other. The third protective plate 181 is configured to shield the fourth trapped region al. In this embodiment, the third protective plate 181 has a roughly rectangular sheet structure, and the third protective connector is disposed at a side edge of the third protective plate 181. In this embodiment, the third protective plate 181 and the third protective connector are integrally formed. In other embodiments, the third protective plate 181 and the third protective connector can also be connected by riveting, welding, etc. A third arc-shaped concave surface (not shown) that can fit the outer wall of the armrest tube is formed on a side of the third protective plate 181. In this embodiment, two third connecting protrusions (not shown) are spaced apart from each other on a side of the third arc-shaped concave surface, and each third connecting protrusion is provided with a third connecting hole (not shown). In other embodiments, more than two or less than two third connecting protrusions and more than two or less than two third connecting holes may also be provided. The corresponding armresttube is provided with two third fixing holes (not shown) respectively corresponding to the two third connecting holes. Two fasteners (such as blind rivets, screws or rivets, etc.) respectively extend through the corresponding third connecting holes and the third fixing holes to connect the third protective component 180 and the armrest tube. In this way, the stability of the third protective component 180 after installation can be improved. In other alternative embodiments, the third protective component 180 can also be connected to the armrest tube by engagement, or the third protective component 180 can also be integrally formed on the armrest tube.

[0140] Referring to FIGS. 37 and 38, a fifth embodiment of the present application further provides a bed frame 10, which is a modified example of the bed frame 10 shown in the second embodiment, and includes a plurality of columns 110 and a plurality of armrest tube mechanisms 120. The plurality of columns 110 are spaced apart along the circumference. The armrest tube mechanism 120 is movably connected between each two adjacent columns 110. The armrest tube mechanism 120 includes two pairs of armrest tubes. The two pairs of armrest tubes are pivotally connected to each other. Specifically, each pair of armrest tubes includes two armrest tubes. The two armrest tubes intersect with each other and are pivotally connected to each other. Each armrest tube mechanism 120 is switchable between the unfolded position and the folded position so that the bed frame 10 can be switched between the unfolded state and the folded state.

[0141] It should be noted that the “pair of armrest tubes” in the fifth embodiment may refer to the second armrest tube 125 and the third armrest tube 126, but it should be noted that the second armrest tube 125 and the third armrest tube 126 are straight tubes, that is, the third tube segment 1252 and the fourth tube segment 1253 are on the same straight line, and the fifth tube segment 1262 and the sixth tube segment 1263 are on the same straight line. In addition, compared with the bed frame 10 in the second embodiment, in the bed frame 10 in the fifth embodiment, the rotating connection mechanism 123 is omitted. That is, the second armrest tube 125 and the third armrest tube 126 are pivotally connected to each other directly, instead of being pivotally connected to each other by the rotating connection mechanism 123.

[0142] Further, referring to FIGS. 39 and 40, the bed frame 10 in the fifth embodiment further includes a plurality of third protective components 180. Specifically, each pair of armrest tubes is provided with the third protective component 180. The third protective component 180 is installed on at least one of the armrest tubes and is positioned at the pivotal connection between the two armresttubes, that is, the third protective component 180 can be installed on the second armrest tube 125 and / or the third armrest tube 126. Therefore, when each armrest tube mechanism 120 is switched between the unfolded position and the folded position, each third protective component 180 can be configured to shield the fourth trapped region al (see FIG. 34) formed between the second armrest tube 125 and the third armrest tube 126. In this way, when this type of bed frame 10 is folded, it is also possible to prevent the crib cover 1200 or the hand from accidentally entering the fourth trapped region al.

[0143] The present application further provides a bed frame 10 (not shown), which includes a plurality of columns 110 and a plurality of armrest tube mechanisms 120. The plurality of columns 110 are spaced apart along the circumference. The armrest tube mechanism 120 is movably connected between each two adjacent columns 110. Specifically, for the entire bed frame 10, the armrest tube mechanism 120 includes the armrest tube mechanism 120 in the fourth embodiment as described above, and the armrest tube mechanism 120 in the fifth embodiment as described above. In other words, the bed frame 10 can have a configuration similar to that of the bed frame 10 shown in the third embodiment as described above, and except that: each of the first armrest tubes 122 of the first armrest tube assembly 121 is a straight tube, and the second armrest tube 125 and the third armrest tube 126 of the second armrest tube assembly 124 are both straight tubes; and the rotating connection mechanism 123 is omitted. The two first armrest tubes 122 of the first armrest tube assembly 121 are directly pivotally connected to each other. The second armrest tube 125 and the third armrest tube 126 of the second armrest tube assembly 124 are directly pivotally connected to each other. Further, since each of the armrest tube mechanisms 120 of the bed frame 10 is further provided with the third protective component 180, the bed frame 10 can still prevent the crib cover 1200 from being trapped or prevent the hand from being pinched during the folding process through the third protective component 180. In summary, according to different types of bed frames 10, different types of protective components (such as the first protective component 160, the second protective component 170 or the third protective component 180, etc.) can be selectively disposed on the armrest tubes of the bed frame 10. When each armrest tube mechanism 120 is switched between the unfolded position and the folded position, each protective component is configured to shield the trapped region (such as the first trapped region 127, the second trapped region 128, the third trapped region 129, the fourth trapped region al, etc.) formed between two armrest tubes in the corresponding pair of armrest tubes.In this way, it is possible to prevent the crib cover or hands from being trapped.

[0144] The bed frame 10 and the crib 1000 according to an aspect of the present application have at least the following technical effects.

[0145] In the bed frame 10 and the crib 1000 of the present application, the armrest tube mechanism 120 is movably connected between the first column 111 and the second column 112, and the armrest tube mechanism 120 can have the unfolded position and the folded position, so that when the armrest tube mechanism 120 is in the folded position, the entire bed frame 10 can be in the folded state. As a result, the volume of the bed frame 10 becomes smaller for easy storage and transportation. And when the armrest tube mechanism 120 is in the unfolded position, the armrest tube mechanism 120 is at least partially parallel to the horizontal plane. Therefore, when the armrest tube mechanism 120 is in the unfolded position, the crib cover (such as a cloth cover) installed on the armrest tube mechanism 120 tends to be flat, so that the crib cover fits the armrest tube mechanism 120 better, thereby making the appearance of the bed frame 10 covered with the crib cover more neat. In other words, when the bed frame and the crib 1000 including the bed frame according to the present application are in the unfolded state, the upper surfaces of the armrest tubes are flat, so that the crib cover covering on the bed frame is more comfortable and flatter.

[0146] The bed frame 10 and the crib 1000 according to another aspect of the present application have at least the following technical effects.

[0147] In the bed frame 10 and the crib 1000 of the present application, no matter how the bed frame 10 is configured (for example, the upper ends of the armrest tube mechanisms 120 are coplanar, or the first armrest tube 122, the second armrest tube 125 and the third armrest tube 126 can all be straight tubes, etc.), the protective components can be provided to shield the trapped regions respectively, for example, the first protective component 160 is provided to shield the first trapped region 127, the second protective component 170 is provided to shield the second trapped region 128 and the third trapped region 129, or the protective component 180 is provided to shield the fourth trapped region al). As such, when the user folds the bed frame 10, not only can the crib cover 1200 be prevented from entering the trapped region, thereby avoiding impeding the folding smoothness of the bed frame 10, but also the user’s hand can be prevented from accidentally entering the trapped region, thereby preventing possible pinching and injuries.

[0148] Referring back to FIGS. 1 to 4, the crib cover 1200 of the crib 1000 may include asubstantially rectangular bottom support sheet 1210 and four side support sheets 1220 respectively connected to four sides of the bottom support sheet 1210. The shape of the bottom support sheet 1210 is adapted to the horizontal cross-sectional shape of the bed frame 10 in the unfolded state. For example, in this embodiment, the horizontal cross-sectional shape of the bed frame 10 in the unfolded state and the bottom support sheet 1210 are both rectangular. More specifically, each side support sheet 1220 is connected between the corresponding first column 111 and the second column 112, that is, the side support sheet 1220 is connected between each first column 111 and each second column 112. The bottom support sheet 1210 is connected to two first columns 111 and two second columns 112. The bottom support sheet 1210 and the four side support sheets 1220 enclose a receiving cavity.

[0149] In some embodiments, the crib cover 1200 may further include a protective member 1230. The protective member 1230 is connected to an end of each side support sheet 1220 away from the bottom support sheet 1210. The protective member 1230 is sleeved on each armrest tube mechanism 120. By connecting the bottom support sheet 1210 and the side support sheet 1220 to the bed frame 10, a receiving space of the crib 1000 can be defined. The child can play in the receiving space. In addition, the protective member 1230 is sleeved on the armrest tube mechanism 120, which can prevent bumping and trapping caused by the exposure of the armrest tube mechanism 120, and improve the aesthetics of the crib 1000. The protective member 1230 can be made of a flexible material. For example, the protective member 1230 can be a cloth cover.

[0150] In some embodiments, the side support sheet 1220 is, for example, a sheet of cloth, or a sheet of mesh, etc., which is not specifically limited hereto. Further, when the side support sheet 1220 is a sheet of mesh, the side support sheet 1220 can be substantially transparent, and the user can observe the situation of the child in the receiving space at any time from the outside of the bed frame 10.

[0151] Further, in some embodiments, an operating member 1300 is disposed at a substantially central position of the bottom support sheet 1210 (as shown in FIGS. 1, 2 and 41). For example, the operating member 1300 may be a component such as a webbing, a rope or a ring (such as a hard pull ring, a handle or a hook). In this embodiment, the operating member 1300 may be a webbing pull ring. The operating member 1300 is operable to switch the bed frame 10 from the unfolded state to the folded state.

[0152] When the user needs to switch the crib 1000 from the unfolded state to the folded state,the user presses the operating end 1511 to cause the locking member 151 to be in the unlocked position; then, the user pulls the operating member 1300 upward or pushes or pulls the sliding member 140 in the direction Fl, so that the first columns 111 and the second columns 112 included in the bed frame 10 can be brought to approach each other with the cooperation of the armrest tube mechanisms 120, the comer members 130 and the sliding members 140, so that the crib 1000 can be folded.

[0153] Referring to FIGS. 1 to 4 and FIGS. 41 and 43, in some embodiments, the crib 1000 further includes a hammock 200. The hammock 200 is detachably connected to the bed frame 10 and installed in the bed frame 10. In some alternative embodiments, the hammock 200 may also be fixedly connected to the bed frame 10. In an embodiment of the present application, the hammock 200 may be received in the receiving cavity formed by the bottom support sheet 1210 and the four side support sheets 1220.

[0154] Referring to FIG. 1, In an embodiment, the hammock 200 is provided with an operating port 201. The operating port 201 faces the operating member 1300. When the user needs to switch the crib 1000 from the unfolded state to the folded state, the user can pass through the operating port 201 to pull the operating member 1300 upward, and the upward movement of the operating member 1300 drives the bottom support sheet 1210 to fold upward, and the folding of the bottom support sheet 1210 drives the four columns to fold, thereby switching the crib 1000 to the folded state. When the crib 1000 is in the unfolded state, a mattress can be laid in the hammock 200 to cover the operating port 201, so as to facilitate carrying the child. The hammock 200 and the crib have a small volume after being folded, which is convenient for storage and transportation.

[0155] Specifically, as shown in FIG.S 41 and 43, the hammock 200 includes a hammock cover 210 and a support assembly 220 supported at the bottom of the hammock cover 210. The hammock cover 210 includes a bottom cover 211 that is approximately rectangular and four side covers 212 that are respectively connected to the four sides of the bottom cover 211. The bottom cover 211 and the four side covers 212 enclose a receiving cavity 230 for receiving a mattress 300 and a child. In this embodiment, the four side covers 212 are detachably connected to the four side support sheets 1220 through zippers 240 respectively. In other embodiments, the four side covers 212 can also be detachably connected to the four side support sheets 1220 by button fastening, Velcro bonding, etc. respectively, or directly fixedly connected to the four side support sheets 1220 respectively. A first opening 2111 facing the operating member 1300 is disposed at a substantially central portion of thebottom cover 211. In this embodiment, the hammock cover 210 is made of mesh material, so that the entire hammock 200 is more light and breathable. In other embodiments, the hammock cover 210 can also be made of other light and breathable non-mesh materials.

[0156] Specifically, as shown in FIGS. 43 to 45, the support assembly 220 includes a pivot base 221 and a plurality of support tube components 222 pivotally connected to the pivot base 221 circumferentially. In this embodiment, the pivot base 221 has a generally annular structure. A second opening 2211 is formed in the middle of the pivot base 221. The second opening 2211 faces the first opening 2111 and the operating member 1300, that is, the operating port 201 of the present application may include the second opening 2211 and the first opening 2111. The operator can operate the operating member 1300 via the second opening 2211 and the first opening 2111. The pivot base 221 includes a first surface 2212 (as shown in FIG. 45) facing away from the bottom cover 211 and a second surface 2213 (as shown in FIG. 46) facing the bottom cover 211. A plurality of pivot assemblies 2214 are circumferentially disposed on the second surface 2213 of the pivot base 221. Each of the pivot assemblies 2214 includes two pivot members 2214a spaced apart from each other. In this embodiment, four pivot assemblies 2214 are provided, and four support tube components 222 are provided, and pivotally connected to the four pivot assemblies 2214, respectively.

[0157] Furthermore, when the hammock 200 is in the unfolded state, the length of each support tube component 222 is less than the length of each column 110. Thus, the length of each support tube component 222 is small, and the gravity moment received by each support tube component 222 is small, so that the support stability of the entire support assembly 222 is better.

[0158] Specifically, each support tube component 222 includes a plurality of tube segments connected to each other. The plurality of tube segments can be at least partially folded together. It should be understood that the term “plurality of’ herein refers to at least two. In this embodiment, as shown in FIGS. 43 to 45, each support tube component 222 includes an inner support tube 2221 and an outer support tube 2222 slidably sleeved on the inner support tube 2221. The inner support tube 2221 has a first end 2221a and a second end 2221b. The outer support tube 2222 has a third end 2222a and a fourth end 2222b. The first end 2221a of the inner support tube 2221 is pivotally connected to the corresponding pivot assembly 2214, the second end 2221b of the inner support tube 2221 is inserted into the corresponding outer support tube 2222 via the third end 2222a of this outer support tube 2222 and is slidably connected to the outer support tube 2222. The fourth end 2222b of the outersupport tube 2222 away from the pivot base 221 is connected to the hammock cover 210. In other unillustrated embodiments, each support tube component 222 includes a first tube segment, a second tube segment and a third tube segment sequentially connected in a direction away from the pivot base 221. The second tube segment and the first tube segment can be folded together, or the second tube segment and the third tube segment can be folded together. The present application is not limited to hereto, and the support tube component 222 can also be furled other means besides sliding or folding.

[0159] In this embodiment, as shown in FIGS. 43 and 44, the fourth ends 2222b of the four support tube components 222 are respectively connected to four corners of the bottom cover 211. Specifically, the four corners of the bottom cover 211 are respectively provided with sleeves 2112 extending toward the center of the bottom cover 211. In this embodiment, the sleeve 2112 is sewn on the bottom cover 211 and made of the same mesh material as the bottom cover 211. The outer support tube 2222 of each support tube component 222 is inserted into the corresponding sleeve 2112. The outer support tube 2222 is fixedly connected to the sleeve 2112 by a fastener 2113 such as a blind rivet. In this embodiment, the length of the sleeve 2112 is the same as the length of the outer support tube 2222. Such arrangement can, on the one hand, prevent the sleeve 2112 from being too long and affecting the extending and retraction of the support tube component 222, and on the other hand, ensure that the sleeve 2112 has a sufficient length so that the outer support tube 2222 can be prevented from swinging irregularly when the support tube component 222 is folded or unfolded with the crib 1000, thereby preventing impeding the folding and unfolding.

[0160] As shown in FIGS. 45 to 47, the support tube component 222 can be switched between an extended state and a shortened state. In this embodiment, the extended state of the support tube component 222 refers to a state in which the first end 2221a of the inner support tube 2221 and the fourth end 2222b of the outer support tube 2222 are farthest apart, and the shortened state of the support tube component 222 refers to a state in which the first end 2221a of the inner support tube 2221 and the fourth end 2222b of the outer support tube 2222 are closest to each other. When the support tube component 222 is in the extended state, the inner support tube 2221 at least partially extends out of the outer support tube 2222. When the support tube component 222 is in the shortened state, the inner support tube 2221 is retracted into the outer support tube 2222, that is, the inner support tube 2221 is completely hidden in the outer support tube 2222. In other embodiments, the inner support tube 2221 may not be completely hidden in the outer support tube 2222, that is, a portion ofthe inner support tube 2221 is hidden in the outer support tube 2222. The distance between the first end 2221a of the inner support tube 2221 and the fourth end 2222b of the outer support tube 2222 when the support tube component 222 is in the shortened state is smaller than the distance between the first end 2221a of the inner support tube 2221 and the fourth end 2222b of the outer support tube 2222 when the support tube component 222 is in the extended state.

[0161] In this embodiment, both the inner tube and the outer tube have a hollow tubular structure. The length of the outer support tube 2222 is greater than or equal to the length of the inner support tube 2221, so that when the support tube component 222 is in the shortened state, the inner support tube 2221 is completely retracted into the outer support tube 2222. In this embodiment, the length of the outer support tube 2222 is slightly greater than the length of the inner support tube 2221, so as to ensure that the inner support tube 2221 is retracted into the outer support tube 2222 to the maximum extent. In other embodiments, the lengths of the outer support tube 2222 and the inner support tube 2221 can also be adjusted according to the size and folding condition of the crib. As shown in FIGS. 48 and 49, when the crib is in the folded state, the plurality of support tube components 222 pivot relative to the pivot base 221 to positions substantially positioned below the pivot base 221, and the support tube components 222 are switched to the retracted state, so that the crib can have a smaller volume, which is convenient for storage and transportation. The hammock 200 is installed in the bed frame 10, and the hammock 200 can be switched between the unfolded state and the folded state. One or more armrest tube mechanisms 120 of the bed frame 10 can form a top frame 1110 of the bed frame 10. When the hammock 200 is in the folded state, the folded height of the support assembly 220 is lower than the height of the highest point of the top frame 1110. That is, the length of the outer support tube 2222 is less than or equal to the vertical distance from the bottom cover 211 to the highest point of the top frame 1110 when the hammock 200 is in the unfolded state, so that the overall height of the folded crib can be reduced.

[0162] One of the support assemblies 220 is taken as an example for detained illustration.

[0163] As shown in FIGS. 50 and 51, the support assembly 220 further includes an anti-contact assembly 223. The anti-contact assembly 223 is disposed between the inner support tube 2221 and the outer support tube 2222 to prevent the inner support tube 2221 and the outer support tube 2222 from directly contacting each other. Specifically, the anti-contact assembly 223 includes a first anticontact member 2231 disposed on the inner support tube 2221 and a second anti-contact member2232 disposed on the outer support tube 2222. The first anti-contact member 2231 and the second anti-contact member 2232 are at least partially positioned between the inner support tube 2221 and the outer support tube 2222.

[0164] The anti-contact assembly 223 is disposed so that only the first anti-contact member 2231 partially contacts the outer support tube 2222, and only the second anti-contact member 2232 partially contacts the inner support tube 2221. The inner support tube 2221 and the outer support tube 2222 are not in direct contact, so that the contact area is small, and the sliding is smooth. Moreover, the first anti-contact member 2231 and the second anti-contact member 2232 can both be made of plastic material, to reduce the friction between them and the inner support tube 2221 or the outer support tube 2222, so that the relative sliding between the inner support tube 2221 and the outer support tube 2222 is smoother.

[0165] As shown in FIGS. 54 and 55, the first anti-contact member 2231 includes a first insertion part 2231a and a first abutting part 2231b that are connected to each other. The first insertion part 2231a has a roughly cylindrical structure. A first engaging finger 2231c is disposed on the sidewall of the first insertion part 2231a. The first abutting part 2231b has a roughly truncated cone structure with a radial size larger than that of the first insertion part 2231a. The first abutting part 2231b and the first insertion part 2231a are integrally formed, and the first abutting part 223 lb closes an end of the first insertion part 2231a. The first abutting part 223 lb is fixed to the end of the first insertion part 2231a and closes such end of the first insertion part 2231a. The inner support tube 2221 is provided with a first engaging hole 2221c. When the first anti-contact member 2231 is installed on the inner support tube 2221, the first insertion part 2231a is inserted into the inner support tube 2221 via the second end 2221b of the inner support tube 2221, and the first engaging finger 2231c is engaged to the first engaging hole 2221c, thereby achieving the fixation of the first anti-contact member 2231 and the inner support tube 2221. The first abutting part 223 lb is positioned outside the inner support tube 2221 and closes the second end 2221b of the inner support tube 2221. The radial size of the first abutting part 223 lb is greater than the outer diameter of the inner support tube 2221.

[0166] As shown in FIG. 55, the second anti-contact member 2232 includes a second insertion part 2232a and a second abutting part 2232b that are connected to each other. The second insertion part 2232a has a roughly cylindrical structure. A second engaging finger 2232c is disposed on the sidewall of the second insertion part 2232a. The second abutting part 2232b is generally a bossstructure integrally formed at an end of the first insertion part 2231a. Alternatively, the second abutting part 2232b is generally a boss structure fixed to the end of the first insertion part 2231a. A second engaging hole 2222c is disposed on the outer support tube 2222 (see FIGS. 48 and 49). When the second anti-contact member 2232 is installed on the outer support tube 2222, the second insertion part 2232a is inserted into the outer support tube 2222 via the third end 2222a of the outer support tube 2222, and the second engaging finger 2232c is engaged to the second engaging hole 2222c, thereby achieving the fixation of the second anti-contact member 2232 and the outer support tube 2222.

[0167] Further, as shown in FIGS. 50 and 51, the fourth end 2222b of the outer support tube 2222 is further provided with an end cover 224. The end cover 224 is at least partially inserted into the outer support tube 2222 to close the outer support tube 2222.

[0168] Further, when the hammock 200 is in the unfolded state, the support tube components 222 are in the extended state, and when the hammock 200 is in the folded state, the support tube components 222 are in the shortened state. When the support tube component 222 is in the extended state, as shown in FIG. 51, the first abutting part 223 lb of the first anti-contact member 2231 and the second inserted portion 2232a of the second anti-contact member 2232 abut against each other, thereby achieving a position limit effect. In this way, on the one hand, the maximum extending length of the support tube component 222 can be limited, and on the other hand, the inner support tube 2221 can be prevented from falling off from the outer support tube 2222. When the hammock 200 is in the folded state, the first abutting part 223 lb of the first anti-contact member 2231 and the end cover 224 abut against each other, thereby achieving a position limit effect. In other embodiments, the third end 2222a of the outer support tube 2222, that is, the end of the outer support tube 2222 into which the second anti-contact member 2232 is inserted, can abut against the pivot base 221, thereby achieving a position limit effect.

[0169] The folding process of the crib in this embodiment is described in detail below.

[0170] When the crib is folded, after the locking member 151 is unlocked as described above, the four columns 110 are in the unlocked state, as shown in FIG. 41, the operating member 1300 can be pulled upward via the first opening 2111 and the second opening 2211 to furl the bottom support sheet 1210 toward the operating member 1300, i.e., toward the center position and pull the bottom support sheet 1210 upward, and at the same time, the bottom support sheet 1210 drives the four columns 110to approach the center position together. In this way, on the one hand, the bottom support sheet 1210 in the folded state is furled between the four columns 110 and will not fall down, and on the other hand, when the bottom support sheet 1210 is pulled upward, an upward pushing force can be applied on the pivot base 221, so that the support assembly 220 can be well folded. That is, the support tube components 222 can pivot downward relative to the pivot base 221, and be retracted to the state shown in FIG. 49 under the pushing action of the bottom support sheet 1210 and the bottom cover 211. Thus, the crib is gradually folded from the intermediate state shown in FIG. 56 to the folded state shown in FIG. 57. After the crib is folded, as shown in FIG. 58, the folded crib can be wrapped with the mattress 300 and fixed by a webbing 310 on the mattress 300. Since the folded height of the support assembly 220 is lower than the height of the highest point of the top frame 1110 when the hammock 200 is in the folded state, the folded hammock 200 is wrapped in the crib, and the highest point of the hammock 200 is lower than the top frame 1110, so the folded hammock 200 does not affect the folded size of the crib, so as to ensure that the folded volume of the crib is smaller.

[0171] In an unillustrated embodiment, the operating member 1300 may be omitted. When the crib is folded, the four columns 110 may be directly unlocked and then folded together by applying external force. In this case, the bottom support sheet 1210 may fall downward under the action of gravity, and thus the bottom support sheet 1210 needs to be manually pulled upward and folded. During the folding process, the support tube components 222 do not automatically pivot downward and are not retracted relative to the pivot base 221. In this case, the support assembly 220 impedes the folding of the crib as a whole. Therefore, the pivot base 221 needs to be manually lifted to cause the support tube components 222 to rotate and retract relative to the pivot base 221, and then the crib can be folded to the folded state.

[0172] In this embodiment, during the folding process of the crib, after the support tube component 222 pivots downward relative to the pivot base 221, the inner support tube 2221 of the support tube component 222 can automatically slide into the outer support tube 2222, that is, the support tube component 222 can automatically retract, so that the folded height of the support assembly 220 is lower than the height of the highest point of the top frame 1110. In other embodiments, during the folding process of the crib, after the support tube component 222 pivots downward relative to the pivot base 221, the inner support tube 2221 of the support tube component 222 does not automatically slide into the outer support tube 2222. In this case, an external force needs to be appliedto cause the inner support tube 2221 to slide into the outer support tube 2222, so that the support tube component 222 retracts, and the folded height of the support assembly 220 is lower than the height of the highest point of the top frame 1110.

[0173] The above-mentioned crib and hammock 200 have at least the following technical effects.

[0174] The above-mentioned crib includes the bed frame and the hammock. The bed frame includes the top frame, and the hammock includes the hammock cover and the support assembly. When the hammock is installed in the bed frame, the crib can be switched between the unfolded state and the folded state. When the crib is in the folded state, the folded height of the support assembly is lower than the height of the highest point of the top frame, so that the hammock 200 has a smaller volume after being folded, which is convenient for storage and transportation.

[0175] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features are described in the embodiments. However, as long as there is no contradiction in the combination of these technical features, the combinations should be considered as fall in the scope of the present application.

[0176] The above-described embodiments are only several implementations of the present application, and the descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present application. It should be understood by those of ordinary skill in the art that various modifications and improvements can be made without departing from the concept of the present application, and all fall within the protection scope of the present application. Therefore, the patent protection of the present application shall be subjected to the appended claims.

Claims

CLAIMS1. Abed frame, comprising: a first column; a second column disposed parallel to the first column; and an armrest tube mechanism movably connected between the first column and the second column, wherein the armrest tube mechanism is switchable between an unfolded position and a folded position, and when the armrest tube mechanism is in the unfolded position, the armrest tube mechanism is at least partially parallel to a horizontal plane.

2. The bed frame according to claim 1, wherein the armrest tube mechanism comprises a first armrest tube assembly comprising a first armrest tube, wherein the first armrest tube has a first pivoting end pivotally connected to one of the first column and the second column, and a first sliding end pivotally and slidably connected to another of the first column and the second column, and wherein when the armrest tube mechanism is in the unfolded position, the first column and the second column are away from each other, and the first armrest tube is at least partially parallel to the horizontal plane.

3. The bed frame according to claim 2, wherein the first armrest tube comprises a first tube segment and a second tube segment that are connected to each other and arranged at an angle to each other, wherein a first end of the first tube segment away from the second tube segment is the first pivoting end, and a first end of the second tube segment away from the first tube segment is the first sliding end, and wherein when the armrest tube mechanism is in the unfolded position, the first tube segment is parallel to the horizontal plane, and the second tube segment extends downward from a second end of the first tube segment.

4. The bed frame according to claim 3, wherein the first armrest tube assembly comprises two first armrest tubes, wherein the first pivoting end of one of the two first armrest tubes is pivotally connected to the first column, and the first sliding end of the one of the two first armrest tubes is pivotally and slidably connected to the second column,wherein the first pivoting end of another of the two first armrest tubes is pivotally connected to the second column, and the first sliding end of the other of the two first armrest tubes is slidably and pivotally connected to the first column, and wherein when the armrest tube mechanism is in the unfolded position, the two first armrest tubes are disposed side by side in a horizontal direction, and projections of the first tube segments of the two first armrest tubes onto a vertical plane that is perpendicular to the horizontal plane and parallel to an extending direction of each first tube segment are at least partially overlapped.

5. The bed frame according to claim 4, wherein the first armrest tube assembly further includes a rotating connection mechanism, and wherein the two first armrest tubes are pivotally connected to each other via the rotating connection mechanism.

6. The bed frame according to claim 5, wherein at least one of the two first armrest tubes is provided with a first protective component, wherein the first protective component is positioned at a pivotal connection between the two first armrest tubes, wherein when the armrest tube mechanism is switched from the unfolded position to the folded position, the two first armrest tubes respectively pivot relative to the rotating connection mechanism, and the two first armrest tubes and the rotating connection mechanism enclose a first trapped region, and wherein the first protective component is configured to shield the first trapped region.

7. The bed frame according to any one of claims 1 to 6, wherein the armrest tube mechanism comprises a second armrest tube assembly comprising two second armrest tubes and two third armrest tubes, wherein each of the two second armrest tubes has a second pivoting end and a second sliding end, the second pivoting ends of the two second armrest tubes are pivotally connected to each other, and the second sliding ends of the two second armrest tubes are slidably disposed on the first column and the second column, respectively, and are pivotally connected to the first column and the second column respectively, wherein each of the two third armrest tubes has a third pivoting end and a fourth pivoting end, the third pivoting ends of the two third armrest tubes are pivotally connected to each other, and the fourth pivoting ends of the two third armrest tubes are pivotally connected to the first column and thesecond column respectively, and wherein when the armrest tube mechanism is in the unfolded position, at least a part of tube segments of each second armrest tube and at least a part of tube segments of each third armrest tube are parallel to the horizontal plane.

8. The bed frame according to claim 7, wherein the second armrest tube comprises a third tube segment and a fourth tube segment that are connected to each other and arranged at an angle to each other, and wherein a first end of the third tube segment away from the fourth tube segment is the second pivoting end, and a first end of the fourth tube segment away from the third tube segment is the second sliding end, wherein the third armrest tube comprises a fifth tube segment and a sixth tube segment that are connected to each other and arranged at an angle to each other, and wherein a first end of the fifth tube segment away from the sixth tube segment is the fourth pivoting end, and a first end of the sixth tube segment away from the fifth tube segment is the third pivoting end, wherein when the armrest tube mechanism is in the unfolded position, each third tube segment and each fifth tube segment are positioned in a same horizontal plane, the fourth tube segment extends downward from a second end of the third tube segment, and the sixth tube segment extends downward from a second end of the fifth tube segment, and wherein the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column are disposed side by side in a horizontal direction, and projections of the fifth tube segment and the third tube segment onto a vertical plane that is perpendicular to the horizontal plane and parallel to an extending direction of each of the fifth tube segment and the third tube segment are partially overlapped.

9. The bed frame according to claim 7 or 8, wherein the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column are pivotally connected to each other.

10. The bed frame according to any one of claims 7 to 9, further comprising a second protective component disposed on each second armrest tube and / or each third armrest tube, and is positioned at a pivotal connection between the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column, wherein when the armrest tube mechanism is switched from the unfolded position to the foldedposition, the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column pivot relative to each other, and the second armrest tube and the third armrest tube both of which are connected to either of the first column or the second column, and the pivotal connection therebetween enclose a second trapped region, and wherein the second protective component is configured to shield the second trapped region.

11. A crib, comprising: a bottom support sheet, on which an operating member is provided; and a hammock comprising a support assembly, the support assembly comprising a pivot base and a plurality of support tube components pivotally connected to the pivot base circumferentially, wherein the hammock is installed in the crib, the crib is switchable between an unfolded state and a folded state, and wherein during switching of the crib from the unfolded state to the folded state, the operating member is capable of driving the pivot base and the plurality of support tube components to pivot relative to each other when being pulled upward.

12. The crib according to claim 11, wherein the hammock further comprises a bottom cover positioned above the bottom support sheet, and the plurality of support tube components are connected to the bottom cover, and wherein the bottom cover is provided with a first opening, the pivot base is provided with a second opening, the first opening, the second opening and the operating member facing each other.

13. The crib according to claim 11 or 12, further comprising a top frame positioned above the bottom support sheet, wherein when the crib is in the folded state, a folded height of the support assembly is lower than a height of a highest point of the top frame.

14. The crib according to any one of claims 11 to 13, wherein each of the support tube components comprises an inner support tube and an outer support tube slidably sleeved on the inner support tube, and wherein when the crib is in the unfolded state, the inner support tube at least partially extends out of the outer support tube, and when the crib is in the folded state, the inner support tube is retracted into the outer support tube.

15. The crib according to claim 14, further comprising a top frame positioned above the bottomsupport sheet, wherein the hammock comprises a bottom cover, an end of each outer support tube is connected to the bottom cover; and a length of the outer support tube is less than or equal to a vertical distance from the bottom cover to a highest point of the top frame when the crib is in the unfolded state.

16. The crib according to claim 14, wherein the hammock cover comprises a bottom cover provided with a plurality of sleeves, wherein a plurality of outer support tubes are respectively inserted and fixed in the plurality of sleeves.

17. The crib according to any one of claims 11 or 12, further comprising: a top frame positioned above the bottom support sheet; and a plurality of columns configured to support the top frame, wherein when the hammock is in the unfolded state, a length of each of the support tube components is less than a length of each of the columns.

18. A hammock, comprising: a hammock cover; and a supporting assembly comprising a pivot base and a plurality of support tube components pivotally connected to the pivot base circumferentially, each support tube component comprising an inner support tube and an outer support tube slidably sleeved on the inner support tube, wherein the plurality of support tube components are connected to the hammock cover, the hammock is switchable between an unfolded state and a folded state, and wherein when the hammock is in the unfolded state, the inner support tube at least partially extends out of the outer support tube, and when the hammock is in the folded state, the inner support tube is retracted into the outer support tube.

19. The crib according to claim 18, wherein each inner support tube has a first end and a second end, and each outer support tube has a third end and a fourth end, and wherein each first end is pivotally connected to the pivot base, each second end is inserted into the outer support tube via the corresponding third end to be slidably connected to the outer support tube, and each fourth end is connected to the hammock cover.

20. The crib according to claim 18 or claim 19, wherein the hammock cover comprises a bottomcover provided with a plurality of sleeves, and wherein a plurality of outer support tubes are respectively inserted and fixed in the plurality of sleeves.

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