Folding mechanism, baby crib frame and foldable baby crib

Abstract

The present application belongs to the technical field of baby cribs. In view of the existing folding baby crib has the phenomenon of jamming and other adverse phenomena when unfolding, the present application discloses a folding mechanism, a baby crib frame and a foldable baby crib. The folding mechanism comprises a center seat, a plurality of rotating members arranged around the center seat and pivoted to the center seat, and a linkage member arranged below the center seat. Each rotating member is transmission connected to the corresponding part of the linkage member. When the linkage member moves up and down along the thickness direction of the center seat, it synchronously drives the rotating member to swing up and down, so that the folding mechanism changes between the unfolded state and the folded state. The folding baby crib frame and the foldable baby crib disclosed by the present application can realize the synchronous rotation of the plurality of rotating members through the cooperation of the gear part and the rack part of the folding mechanism, thereby facilitating and quickening the unfolding and folding.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of baby cribs, and particularly relates to a folding mechanism, a baby crib frame and a foldable baby crib. BACKGROUND

[0002] Baby cribs are important auxiliary tools for taking care of infants and young children, and are widely used in many families around the world. Among them, foldable baby cribs have been widely used in recent years due to their convenient storage and carrying characteristics.

[0003] The folding bed frame part of the existing foldable baby crib generally includes a bottom frame and a guardrail. For the bottom frame, some existing technologies are to design the bottom frame as a folding mechanism for folding and storing, and the folding mechanism includes a center seat and a bottom rod and the like hinged around the center seat.

[0004] However, the above folding structure is difficult to expand due to uneven stress and wear and tear, which causes the foldable baby crib to have a jamming phenomenon when it is expanded. SUMMARY

[0005] In view of the above-mentioned problems of the existing foldable baby crib that the bottom rod is difficult to expand, thereby affecting the expansion operation of the foldable baby crib, one of the purposes of the present application is to provide a folding mechanism, a baby crib frame and a foldable baby crib, which are convenient to expand and fold.

[0006] To achieve the above-mentioned purposes, the present application adopts the following technical solutions:

[0007] A folding mechanism, comprising a center seat; a plurality of rotating members surrounding the center seat and being pivotally connected with the center seat; and a linkage member arranged below the center seat.

[0008] Each rotating member is drivingly connected with a corresponding part of the linkage member; when the linkage member moves up and down along the thickness direction of the center seat, it synchronously drives the rotating member to swing up and down, so that the folding mechanism is transformed between the expanded state and the folded state.

[0009] In one of the technical solutions disclosed in the present application, the linkage member is provided with a rack portion extending along the thickness direction of the center seat; correspondingly, the end of the rotating member towards the linkage member is provided with a gear portion engaged with the rack portion.

[0010] In one of the technical solutions disclosed in the present application, it further comprises a locking and unlocking assembly; the locking and unlocking assembly can be actuated to prevent or allow the linkage member to move.

[0011] In one of the technical solutions disclosed in the present application, the bottom center of the center seat is provided with a hollow support shaft along the thickness direction thereof; the linkage sleeve is arranged on the support shaft and can move up and down along the support shaft; the locking and unlocking assembly comprises an unlocking member and a locking member arranged inside the support shaft.

[0012] Part of the locking member can protrude from the support shaft and abut against the linkage to prevent the movement of the linkage; when the unlocking member is triggered, the part of the locking member protruding from the support shaft can be retracted into the support shaft, so that the movement of the linkage is released from the blocked state.

[0013] In one of the technical solutions disclosed in the present application, the locking member comprises a plurality of rotating pieces arranged inside the support shaft, one end of which is pivotally connected to the inner wall of the support shaft, and the other end is formed as a free end.

[0014] The support shaft is provided with a through hole through which the free end of the rotating piece protrudes outside the support shaft, and can abut against the linkage to prevent the movement of the linkage.

[0015] In one of the technical solutions disclosed in the present application, the unlocking member has a blocking piece arranged inside the support shaft; the blocking piece has an extension part extending along the axial direction of the support shaft; the extension part and the free end of the rotating piece are connected by a cooperating pin shaft and a waist-shaped hole; the waist-shaped hole is arranged near the free end of the rotating piece or on the extension part, and one end of the pin shaft is arranged on the extension part or the rotating piece and located in the waist-shaped hole; the length direction of the waist-shaped hole is towards the through hole; a pulling part has one end connected to the blocking piece and the other end passing through the top of the center seat and extending outside the center seat; a first reset member is arranged between the blocking piece and the center seat.

[0016] In one of the technical solutions disclosed in the present application, a second reset member is arranged between the center seat and the linkage.

[0017] In one of the technical solutions disclosed in the present application, the pivot connection position of the center seat and the rotating piece is provided with a limiting part, so that the rotating piece can only be pivoted in the direction changing to the folding state.

[0018] A baby crib frame comprises a plurality of vertical columns and a top frame connected to the vertical columns; wherein each side of the top frame has two horizontal rods pivotally connected to one end of the vertical column and a handrail folding mechanism connected to the other end of the two horizontal rods, and further comprises the folding mechanism of any one of the above technical solutions and a plurality of bottom rods; one end of the bottom rod is pivotally connected to the vertical column, and the other end is connected to the rotating piece of the folding mechanism.

[0019] When the folding mechanism is transformed between the unfolded state and the folded state, the handrail folding mechanism can be actuated to allow the crossbar to rotate, so that the baby crib frame is transformed between the use state and the folded state.

[0020] In one of the technical solutions disclosed in the present application, the handrail folding mechanism comprises an engaging member; the other end of the crossbar is pivotally connected to the engaging member.

[0021] In one of the technical solutions disclosed in the present application, two sides of the engaging member are provided with accommodating cavities for accommodating the other end of the crossbar; two sides of the accommodating cavities are symmetrically provided with inclined guide grooves; inclined upper ends of the inclined guide grooves are provided with transversely-through locking grooves; the other end of the crossbar is provided with a pivot shaft matched with the inclined guide grooves and the locking grooves.

[0022] When the folding mechanism is transformed between the unfolded state and the folded state, the rotating member pulls the bottom bar to incline during the rotation, and the bottom bar pulls the stand to incline and move in position during the inclination, so that the pivot shaft of the other end of the crossbar is moved from the locking groove to the inclined guide groove, and the baby crib frame is changed from the use state to the folded state.

[0023] In one of the technical solutions disclosed in the present application, two sides of the accommodating cavities are also symmetrically provided with horizontal guide grooves; wherein the other end of the crossbar is provided with a pivot shaft matched with the horizontal guide grooves.

[0024] In one of the technical solutions disclosed in the present application, a first balance bar is arranged below the crossbar; one end of the first balance bar is pivotally connected to the stand, and the other end is pivotally connected to the engaging member.

[0025] In one of the technical solutions disclosed in the present application, the engaging member is provided with an arc-shaped guide groove with the pivot connection position of the first balance bar and the engaging member as the center; an upper end of the arc-shaped guide groove is provided with a transversely-through limiting groove; the other end of the first balance bar is provided with a pivot shaft matched with the arc-shaped guide groove and the limiting groove.

[0026] In one of the technical solutions disclosed in the present application, a second balance bar is arranged below the bottom bar, one end of the second balance bar is pivotally connected to the stand, and the other end is pivotally connected to the supporting shaft.

[0027] In one of the technical solutions disclosed in the present application, the second balance bar is arranged in multiple sections and connected to the bottom bar through a movable buckle.

[0028] In one of the technical solutions disclosed in the present application, a wheel is formed at a lower end of the stand.

[0029] In one of the technical solutions of the present application, the plurality of auxiliary support rods are hinged at one end to the central base and formed as free ends at the other end.

[0030] The foldable baby crib has the baby crib frame as described in any of the above technical solutions.

[0031] The above description shows that, compared with the prior art, the present application has the following beneficial effects:

[0032] The present application has simple structure and convenient operation, and through the cooperation of the rack part and the gear part, the rotating member can be synchronously rotated, which is convenient for unfolding and folding, and can avoid the occurrence of adverse phenomena such as jamming. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or related description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0034] Figure 1 The structure schematic diagram of the folding mechanism in the unfolded state of the present application.

[0035] Figure 2 The structure schematic diagram of the folding mechanism in the folded state of the present application.

[0036] Figure 3 The longitudinal section structure schematic diagram of the folding mechanism of the present application.

[0037] Figure 4 The structure schematic diagram of the folding mechanism with locking member and unlocking member of the present application.

[0038] Figure 5 The structure schematic diagram of the baby crib frame in the use state of the present application.

[0039] Figure 6 Another structure schematic diagram of the baby crib frame in the use state of the present application.

[0040] Figure 7 The structure schematic diagram of the folding mechanism with locking member and unlocking member of the present application. Figure 6 The local enlarged schematic diagram.

[0041] Figure 8 The structure schematic diagram of the engaging member of the present application.

[0042] Figure 9 The section structure schematic diagram of the engaging member of the present application. Figure 8

[0043] Figure 10 ​Another structural schematic view of the baby crib frame in a state of use according to the present application.

[0044] Figure 11 A partial enlarged schematic view of Figure 10

[0045] Figure 12 Another structural schematic view of the baby crib frame in a state of use according to the present application.

[0046] Figure 13 A partial enlarged schematic view of Figure 12

[0047] Figure 14 A structural schematic view of the wheel foot of the baby crib frame according to the present application.

[0048] Reference numerals: 1 - central seat; 11 - support shaft; 12 - limiting part;

[0049] 2 - rotating piece; 21 - gear part;

[0050] 3 - linkage; 31 - rack part; 32 - second reset piece;

[0051] 4 - locking piece; 41 - rotating sheet; 411 - waist-shaped hole;

[0052] 5 - unlocking piece; 51 - blocking sheet; 511 - extension part; 52 - pulling part; 53 - first reset piece;

[0053] 6 - stand; 61 - supporting leg; 62 - corner seat; 63 - wheel foot;

[0054] 7 - top surrounding frame; 71 - horizontal rod; 72 - engaging piece; 721 - inclined guide groove; 722 - locking groove; 723 - horizontal guide groove; 724 - side plate; 725 - connecting rib plate; 726 - reinforcing rib plate; 727 - arc-shaped guide groove; 73 - first balance rod;

[0055] 8 - bottom rod; 81 - second balance rod; 82 - movable buckle;

[0056] 9 - auxiliary support rod. DETAILED DESCRIPTION

[0057] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0058] ​​In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0060] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the "upper", "above" and "above" of the first feature to the second feature include the vertical direction of the first feature above and oblique above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical direction of the first feature below and oblique below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0062] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0063] Example 1

[0064] The embodiments of the present application disclose a folding mechanism, which has an unfolded state as shown in FIG. 1 and a folded state as shown in FIG. 2, and the structure comprises a center seat 1, a rotating part 2 and a linkage 3. Figure 1 Figure 2 The structure comprises a center seat 1, a rotating part 2 and a linkage 3.​

[0065] Specifically, a support shaft 11 extending downward (in the thickness direction of the center seat 1) is provided at the bottom center of the center seat 1. Several rotating members 2 are arranged around the center seat 1 and pivotally connected to the center seat 1, and a gear portion 21 is provided at the end of the rotating member 2 that is pivotally connected to the center seat 1. A linkage member 3 is sleeved on the support shaft 11 and can move up and down along the support shaft 11. The linkage member 3 is provided with a rack portion 31 that extends axially along the support shaft 11, and the rack portion 31 and the gear portion 21 mesh with each other.

[0066] In practical use, compared with the existing technology of baby crib base folding mechanism, which may cause uneven force on each rotating part during unfolding, thus affecting the unfolding of the baby crib, this embodiment can make several rotating parts 2 rotate simultaneously through the linkage of rack part 31 and gear part 21, so as to achieve quick and easy unfolding action and avoid problems such as jamming.

[0067] It is understandable that, considering the linkage between the gear part 21 and the rack part 31, those skilled in the art can easily conceive of other linkage structures to achieve linkage transmission, such as linkage transmission structure, ball screw transmission structure, etc., as long as the linkage 3 can trigger multiple rotating plates 2 to rotate simultaneously when it moves.

[0068] In this embodiment, there are four rotating parts 2. It is understood that there can also be two, three, five, or other quantities of rotating parts 2.

[0069] More specifically, in some embodiments, as shown in the appendix Figure 3 As shown, it also includes a second reset member 32 disposed between the center seat 1 and the linkage member 3; the second reset member 32 provides a downward force to the linkage member 3, thereby preventing the rotating member 2 from rotating under its own weight, so that the rotating member 2 remains in the unfolded state.

[0070] In this embodiment, the second reset member 32 is a spring and is sleeved on the support shaft 11. It is understood that the second reset member 32 may also be other elastic members, and this embodiment is not limited thereto.

[0071] In some embodiments, to prevent the rotating member 2 from continuing to rotate upwards when it reaches the unfolded state, which is an undesirable state, a limiting part 12 is provided at the pivot position between the center seat 1 and the rotating member 2. The limiting part 12 only allows the rotating member 2 to rotate downwards as shown in the attached figure. Figure 2 The folded state shown is not allowed, and the rotating part 2 is not allowed to rotate upwards.

[0072] Example 2

[0073] As an optimization of embodiment 1, the folding mechanism further comprises a locking and unlocking assembly to prevent or allow the movement of the linkage 3.

[0074] Specifically, as shown in the accompanying drawings, the support shaft 11 is internally hollow. The locking and unlocking assembly comprises a locking piece 4 and an unlocking piece 5 installed in the internal cavity of the support shaft 11. Figure 4

[0075] The locking piece 4 has a locking position and an unlocking position. When the locking piece 4 is in the locking position, part of the locking piece 4 can protrude outside the support shaft 11 and abut against the linkage 3 to prevent the movement of the linkage 3. When the locking piece 4 is in the unlocking position, part of the locking piece 4 can retract into the support shaft 11, thereby removing the movement blocking state of the linkage 3. The unlocking piece 5 can actuate the locking piece 4 to switch between the locking position and the unlocking position.

[0076] When folding is needed, the locking piece 4 is switched to the unlocking position, and the linkage 3 moves upward, thereby driving a plurality of rotating pieces 2 to change from the unfolded state to the folded state through the cooperation of the rack portion 31 and the gear portion 21. This structure is simple to operate and is conducive to improving the unfolding fluency.

[0077] More specifically, the locking piece 4 comprises a plurality of rotating pieces 41 rotatingly arranged in the cavity of the support shaft 11. One end of the rotating piece 41 is pivotally connected to the inner wall of the support shaft 11, and the other end is formed as a free end. The support shaft 11 is provided with a through hole through which the free end of the rotating piece 41 protrudes outside the support shaft 11. When the free end of the rotating piece 41 protrudes outside the support shaft 11, it can abut against the linkage 3 to prevent the movement of the linkage 3.

[0078] In this embodiment, there are two rotating pieces 41 symmetrically arranged in the cavity of the support shaft 11. It can be understood that the rotating piece 41 can also be one, three, four, etc., and this embodiment is not limited thereto.

[0079] The unlocking piece 5 comprises a blocking piece 51, a lifting portion 52, and a first reset piece 53.

[0080] The blocking piece 51 is arranged in the cavity of the support shaft 11 and has an extension portion 511 extending downward and shaped on both sides of the rotating piece 41. The extension portion 511 and the free end of the rotating piece 41 are connected by a mutually cooperating waist-shaped hole 411 and a pin shaft. The length direction of the waist-shaped hole 411 is toward the through hole of the support shaft 11. It can be understood that the waist-shaped hole 411 can be opened on the extension portion 511 or near the free end of the rotating piece 41, and correspondingly, one end of the pin shaft is fixed on the rotating piece 41 or the extension portion 511. One end of the lifting portion 52 is connected to the blocking piece 51, and the other end extends to the outside of the center seat through the top of the center seat 1. The first reset piece 53 is arranged between the blocking piece 51 and the center seat 1 to drive the blocking piece 51 to move and reset, thereby rotating the rotating piece 41 to the locking position. ​

[0081] When folding is required, pull up the lifting part 52 and drive the baffle 52 to move upward. This causes the rotating piece 41 to rotate and fully retract into the receiving cavity through the linkage of the waist-shaped hole 411 and the pin. At this time, the linkage 3 can move along the support shaft 11, thereby driving the rotating piece 3 to change from the unfolded state to the folded state.

[0082] In this embodiment, the first reset member 53 is a spring. It is understood that the first reset member 52 can also be other elastic members, and this embodiment is not limited to this.

[0083] The lifting part 52 can be a flexible belt or a handle or other structure, as long as it can drive the baffle 51 to move upward. This embodiment is not limited to this.

[0084] Example 3

[0085] This embodiment discloses a crib frame, the structure of which is shown in the attached figure. Figure 5 As shown, it includes a support column 6, a top frame 7, a base rod 8, and the folding mechanism described in the above embodiment, as well as other components. This crib frame has the features shown in the attached diagram. Figure 12 The usage status shown and as attached Figure 13 The folded state shown indicates that the crib has a much smaller volume when folded than when in use, making it easier to transport or store.

[0086] Specifically, the four uprights 6 are arranged in a rectangular pattern. Each side of the top frame 7 has two crossbars 71 and an armrest folding mechanism disposed between the two crossbars 71. One end of the crossbar 71 is pivotally connected to the upright 6, and the other end is pivotally engaged with the armrest folding mechanism to form a rectangular frame on the upper part of the upright 6. One end of the bottom bar 8 is hinged to the upright 6, and the other end is connected to the rotating part 2 of the folding mechanism, thus connecting the folding mechanism to the crib frame.

[0087] When folding, the armrest folding mechanism can be actuated to allow the crossbar 71 to rotate, so that the crib frame can be changed between the use state and the folded state; thereby, by pulling the lifting part 52, the center seat 1 is moved upward, which pulls the bottom bar 8 to tilt. During the tilting process, the bottom bar 8 pulls the upright column 6 to tilt and move its position, thereby rotating the crossbar 71 and changing the crib frame from the use state to the folded state.

[0088] More specifically, to improve the stability of the folding mechanism, two auxiliary support rods 9 are also included. One end of the two auxiliary support rods 9 is hinged to the central seat 1, and the other end forms a free end and contacts the ground to support the folding mechanism.

[0089] It is understood that the number of secondary struts 9 can also be 3, 4, 5, or other numbers, and this embodiment is not limited to this.

[0090] Embodiment 4

[0091] As one of the specific embodiments of Embodiment 3, as shown in the accompanying drawings Figure 6 and the accompanying drawings Figure 7 The handrail folding mechanism comprises the engaging member 72; wherein the other end of the crossbar 71 is pivotally connected with the engaging member 72.

[0092] Specifically, the engaging member 72 is provided with accommodating cavities on both sides for accommodating the other end of the crossbar 71, and the two sides of the accommodating cavities are symmetrically provided with inclined guide grooves 721 inclined upward away from the other end of the crossbar 71, and the inclined upper ends of the inclined guide grooves 721 are provided with transversely communicated locking grooves 722. Correspondingly, the other end of the crossbar 71 is provided with a pivot shaft matched with the inclined guide grooves 721 and the locking grooves 722, so that the crossbar 71 can only be pivoted in the direction of the folded state; so that during folding, the central seat 1 moves upward to tilt the bottom bar 8, and during the tilting process, the upright column 6 is tilted and moved in position, so that the other end of the crossbar 72 moves from the locking groove 722 to the inclined guide groove 721, and the crossbar 71 rotates, thereby achieving the folding of the crib.

[0093] With the above structure, through the cooperation of the inclined guide grooves 721, the locking grooves 722 and the pivot shaft, the connection strength of the handrail folding mechanism and the crossbar 71 can be improved, and the phenomenon that the crossbar 72 rotates to deform the crib and cannot be used when the crib is in the unfolded state can be avoided.

[0094] When the crib needs to be used, the central seat 1 is pressed downward, the second reset member 42 drives the linkage member 3 to move downward; the rotating piece 41 is again inserted out of the outer side of the support shaft 11 and abuts against the linkage member 3 under the action of the first reset member 53; and the rotating member 2 is rotated under the linkage action of the rack portion 31 and the gear portion 21, thereby driving the bottom bar 8 to perform corresponding unfolding action with the central seat 1 as the reference, and moving the upright column 6 during the unfolding of the bottom bar 8, so that the pivot shaft at the other end of the crossbar 72 moves from the inclined guide groove 721 to the locking groove 722 for locking, so as to ensure the normal use of the crib.

[0095] When the crib needs to be folded, the pulling portion 52 is pulled upward, so that the blocking piece 51 drives the rotating piece 41 to rotate, and the rotating piece 41 is completely accommodated in the cavity of the support shaft 11; and the pulling portion 52 is continuously pulled upward, the central seat 1 moves upward, drives the rotating member 2 to rotate, and drives the bottom bar 8 to tilt; the bottom bar 8 tilts and moves in position during the tilting process, so that the pivot shaft at the other end of the crossbar 72 moves from the locking groove 722 to the inclined guide groove 721 for rotation, thereby changing the crib from the use state to the folded state, and completing the one-time folding of the crib.

[0096] In some embodiments, horizontal guide grooves 723 are symmetrically provided on both sides of the receiving cavity. Correspondingly, the other end of the crossbar 72 is provided with a pivot passing through the horizontal guide groove 723.

[0097] As a specific implementation of the above embodiment, the connecting member 72 includes two parallel side plates 724 and a connecting rib 725 connected between the two side plates 724, which together constitute a receiving cavity.

[0098] More specifically, to improve the strength of the joint 72, as shown in the attached... Figure 8 and attached Figure 9 As shown, the inner side of the side plate of the connector 72 is provided with reinforcing ribs 726, and gaps are formed between the reinforcing ribs 726; wherein, the inclined guide groove 721 and the locking groove 722 are disposed on the opposite side of the reinforcing ribs 726. In this embodiment, the reinforcing ribs 726 are connected to the side plate 724 by a plurality of rivets.

[0099] Understandably, for ease of assembly, the inclined guide groove 721, the locking groove 722, and the horizontal guide groove 723 can all pass through the connecting member 72.

[0100] In some embodiments, the armrest retraction mechanism may also include a trigger locking component (not shown in the figures), which can be actuated to prevent or allow the crossbar 71 to rotate. This is common in the prior art and presents no difficulty to those skilled in the art, so it will not be described in detail here.

[0101] Example 5

[0102] As a specific implementation of Example 3, to improve the strength and stability of the top frame 7, as shown in the attached... Figure 10 and attached Figure 11 As shown, a first balance bar 73 is provided below the crossbar 71.

[0103] More specifically, the handrail retraction mechanism includes a connecting member 72. The other end of the crossbar 72 is pivotally connected to the connecting member 72. One end of the first balance bar 73 is hinged to the column 6, and the other end is pivotally connected to the connecting member 7. The connecting member 72 has an arc-shaped guide groove 727 centered on the pivot point between the first balance bar 73 and the connecting member 7, and the upper end of the arc-shaped guide groove 727 laterally connects to a limiting groove. The other end of the first balance bar 73 has a pivot that mates with the arc-shaped guide groove 727 and the limiting groove.

[0104] When the crib is folded up, as the uprights 6 tilt and move, the pivot of the first balance bar 73 moves from the limiting groove to the arc-shaped guide groove 727 to rotate, and drives the crossbar 71 to rotate, thereby changing the crib from the use state to the folded state, completing the one-time folding and folding of the crib.

[0105] In some embodiments, as shown in FIG. 1, the lower part of the bottom bar 8 is provided with a second balance bar 81, one end of which is hinged to the stand column 6 and the other end of which is hinged to the support shaft 11, so as to improve the stability of the crib frame. Figure 12

[0106] More specifically, the second balance bar 81 is provided in a multi-section structure and is connected to the bottom bar 8 through a movable buckle 82, so as to improve the flexibility of the second balance bar 81 and facilitate the folding efficiency.

[0107] Embodiment 6

[0108] As a specific embodiment of the above-mentioned embodiments, in the present embodiment, as shown in FIG. 1 and FIG. 2, the lower part of the stand column 6 is formed with a support leg 61, one end of the bottom bar 8 is hinged to the support leg 61 and is connected to the stand column 6. The support leg 61 is integrally formed with the stand column 6 or is connected to the stand column 6 through a rivet. It should be understood that the support leg 61 can be connected to the stand column 6 through other ways, and the present embodiment is not limited in this way. Figure 5 Figure 14 Considering that the support leg 61 is not movable, resulting in inconvenience in moving the crib, the lower part of the stand column 6 is formed with a wheel leg 63, or two of the four stand columns 6 are formed with the wheel leg 63 and the other two stand columns are formed with the support leg 61, so as to facilitate the movement of the crib.

[0109] It should be understood that the wheel leg 63 is further provided with a brake mechanism, so that when the crib does not need to be moved, the wheel leg can be fixed through the brake mechanism, so as to improve the safety of the crib. The brake mechanism can adopt the prior art, and there is no difficulty for those skilled in the art, which will not be described in detail here.

[0110] It should be understood that the wheel leg 63 is further provided with a brake mechanism, so that when the crib does not need to be moved, the wheel leg can be fixed through the brake mechanism, so as to improve the safety of the crib. The brake mechanism can adopt the prior art, and there is no difficulty for those skilled in the art, which will not be described in detail here.

[0111] More specifically, the top of the stand column 6 is provided with a corner seat 62, one end of the cross bar 71 is hinged to the corner seat 62 and the other end of the cross bar 71 is pivoted to the joint 72.

[0112] The above-mentioned specific embodiments have further detailed the purposes, technical solutions and beneficial effects of the present application. It should be understood that the above-mentioned embodiments are only specific embodiments of the present application and are not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.​​

Claims

1. A folding mechanism, characterized by, The application relates to a folding mechanism, comprising: a central seat, the bottom center of which is provided with a support shaft along the thickness direction of the central seat; a plurality of rotating members, which are arranged around the central seat and are pivotally connected with the central seat; a linkage member, which is arranged below the central seat, is sleeved on the support shaft and can move up and down along the support shaft; wherein one end of each rotating member is in transmission connection with the corresponding part of the linkage member; when the linkage member moves up and down along the thickness direction of the central seat, the rotating members are synchronously driven to swing up and down, so that the folding mechanism is transformed between an unfolded state and a folded state; the linkage member is provided with a rack part extending along the thickness direction of the central seat; correspondingly, one end of the rotating member is provided with a gear part in meshing connection with the rack part; the folding mechanism further comprises a locking and unlocking assembly, which can be actuated to prevent or allow the linkage member to move; the support shaft is internally hollow; the locking and unlocking assembly comprises an unlocking member and a locking member arranged in the support shaft; part of the locking member can protrude out of the support shaft and abut against the linkage member, so as to prevent the linkage member from moving; when the unlocking member is triggered, the part of the locking member protruding out of the support shaft can be retracted into the support shaft, so that the movement of the linkage member is released from the blocked state; the pivot connection position of the central seat and the rotating member is provided with a limiting part, so that the rotating member can only be pivoted in the direction of changing to the folded state.

2. The folding mechanism of claim 1, wherein the locking member comprises: at least one rotating sheet arranged in the support shaft; one end of the rotating sheet is pivotally connected with the inner wall of the support shaft, and the other end is formed as a free end; wherein the support shaft is provided with a through hole through which the free end of the rotating sheet protrudes out of the support shaft; when the free end of the rotating sheet protrudes out of the support shaft through the through hole, the free end can abut against the linkage member, so as to prevent the linkage member from moving.

3. The folding mechanism of claim 2, wherein the unlocking member has: a baffle arranged in the support shaft; the baffle has an extension part extending along the axial direction of the support shaft; the extension part and the free end of the rotating sheet are connected through a matching pin shaft and a waist-shaped hole; the waist-shaped hole is arranged near the free end of the rotating sheet or on the extension part, and one end of the pin shaft is correspondingly arranged on the extension part or the rotating sheet and located in the waist-shaped hole; the length direction of the waist-shaped hole is towards the through hole; a pulling part, one end of which is connected with the baffle and the other end of which extends out of the central seat through the top of the central seat; a first reset member arranged between the baffle and the central seat.

4. The folding mechanism according to claim 1 or 3, wherein a second reset member arranged between the central seat and the linkage member.

5. A cot frame comprising a plurality of uprights and a top surround connecting the uprights; wherein, each edge of the top frame is respectively provided with two horizontal rods pivotally connected with the stand column and a handrail folding mechanism connecting the other ends of the two horizontal rods, and the folding mechanism further comprises: the folding mechanism according to any one of claims 1 to 4, and a plurality of bottom rods; one end of the bottom rod is pivotally connected with the stand column, and the other end of the bottom rod is connected with the rotating member of the folding mechanism. When the folding mechanism is transformed between the unfolded state and the folded state, the armrest folding mechanism can be actuated to allow the crossbar to rotate, so that the baby crib frame is transformed between the use state and the folded state.

6. The crib frame of claim 5, wherein, The armrest folding mechanism comprises an engaging member; the other end of the crossbar is pivotally connected to the engaging member.

7. The baby crib frame according to claim 6, wherein: Two sides of the engaging member are provided with accommodating cavities for accommodating the other end of the crossbar. Two sides of the accommodating cavities are symmetrically provided with inclined guide grooves; inclined upper ends of the inclined guide grooves are provided with transversely communicated locking grooves; The other end of the crossbar is provided with a pivot shaft matched with the inclined guide grooves and the locking grooves. When the folding mechanism is transformed between the unfolded state and the folded state, the rotating member pulls the bottom bar to incline during the rotation, and the bottom bar pulls the stand to incline and move in position during the inclination, so that the pivot shaft of the other end of the crossbar is moved from the locking groove to the inclined guide groove, and the baby crib frame is changed from the use state to the folded state.

8. The crib frame of claim 7, wherein, Two sides of the accommodating cavities are also symmetrically provided with horizontal guide grooves; the other end of the crossbar is provided with a pivot shaft matched with the horizontal guide grooves.

9. The crib frame of claim 6, wherein, A first balance bar is arranged below the crossbar; one end of the first balance bar is pivotally connected to the stand, and the other end is pivotally connected to the engaging member.

10. The crib frame of claim 9, wherein, The engaging member is provided with an arc-shaped guide groove with the pivot connection position of the first balance bar and the engaging member as the center; an upper end of the arc-shaped guide groove is provided with a transversely communicated limiting groove; The other end of the first balance bar is provided with a pivot shaft matched with the arc-shaped guide groove and the limiting groove.

11. The crib frame of claim 5, wherein, A second balance bar is arranged below the bottom bar; one end of the second balance bar is pivotally connected to the stand, and the other end is pivotally connected to the folding mechanism.

12. The crib frame of claim 11, wherein, The second balance bar is provided in multiple sections and connected to the bottom bar through a movable buckle.

13. The crib frame of claim 5, wherein, A wheel is formed at a lower end of the stand.

14. The crib frame of claim 5, wherein, A plurality of auxiliary support bars are further included; one end of the auxiliary support bar is hingedly connected to the center base, and the other end is formed as a free end.

15. A foldable crib, comprising: The baby crib frame has any one of the structures as claimed in claims 5 to 14.

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