Folding crib support

Abstract

The invention discloses a folding crib support, and relates to the technical field of baby furniture, the folding crib support comprises a folding support frame assembly, a folding handrail assembly and a lifting handrail lock assembly, the folding support frame assembly can be flatly placed on the ground to serve as a base, and a plurality of stand columns are installed on the folding support frame assembly; lifting handrail lock assemblies capable of adjusting the height are mounted on the stand columns, and the four lifting handrail lock assemblies are connected through folding handrail assemblies. Folding of the whole supporting frame can be achieved by lifting and pulling the pull handle, unfolding of the supporting frame can be completed by separately stretching the stand columns, folding and unfolding operation is convenient, and after the crib support is stored, the occupied area is small, and storage is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of baby furniture, in particular to a folding baby crib support. Background Art

[0002] Folding beds for infants or other baby products such as baby safety beds and children's play beds are mainly designed for babies aged 0 to 6 years old, aiming to provide them with a safe and comfortable space for playing and taking a short rest. At the same time, they can be folded for easy carrying. The existing folding method usually meets different folding requirements by folding the support frame. The current baby bed is mainly composed of a baby bed frame and a bed board.

[0003] The current folding crib stand generally has two I-shaped support frames hingedly installed in the center. When needed, the two I-shaped support frames need to be unfolded to form a stand, and railings are installed on the I-shaped support frames. However, the folding crib stand composed of the I-shaped support frames has the problems of occupying a large space, being inconvenient to operate when folded, having low overall strength, and being unable to be folded quickly. Moreover, the railings on the I-shaped support frames cannot be folded, making the overall volume large and inconvenient to store. In addition, due to the existence of the railings, parents are prevented from quickly and clearly checking the status of the baby at night. For this reason, we propose a folding crib stand. Summary of the invention

[0004] In order to solve the problem of the inconvenience of quick folding and storage of the sampling rod mentioned in the above background technology, the purpose of the present invention is to provide a foldable baby crib bracket.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a folding baby crib support, comprising a folding support frame assembly, a folding railing assembly, and a lifting railing lock assembly;

[0006] The folding support frame assembly includes a central connection box, a pull handle is provided at the upper end of the central connection box, two first connection rods are fixed to the lower part of one end of the pull handle, and the two first connection rods are embedded in the middle position of the central connection box, a handle pin is provided at the connection between the central connection box and the pull handle, and main support second connection sleeves are provided at the four corners of the central connection box;

[0007] The folding railing assembly includes a fixing frame, two fixed shafts are arranged in the middle of the fixing frame, two upper rotating shaft reciprocating grooves are formed through the fixing frame, and the two upper rotating shaft reciprocating grooves are respectively located on both sides of the two fixed shafts, upper rotating shafts are inserted in the two upper rotating shaft reciprocating grooves, a railing connector is installed on one side of each upper rotating shaft, an upper railing is fixedly installed on one side of the two railing connectors, a fixing groove is formed at one end of each railing connector, and the two fixing grooves are respectively engaged with the two fixed shafts;

[0008] The lifting railing lock assembly includes a column and a column top cover, a lifting plate is movably installed on one side of the column, a first railing sleeve is rotatably installed on the lifting plate, a second rotating shaft is installed on the lifting plate, a knob is rotatably installed on the second rotating shaft, a spinning drive plate and a driven plate are sleeved on the second rotating shaft, the knob includes a lever, the lever on the knob passes through the first railing sleeve and is connected to the spinning drive plate, the spinning drive plate includes a plurality of spinning plates, a plurality of sliding grooves are provided on the driven plate, each of the spinning plates is slidably connected to the corresponding sliding groove, the driven plate includes an extrusion plate, and a lock tongue is movably installed inside the back side of the lifting plate in contact with the column top cover.

[0009] Preferably, a truncated cone is provided at the lower end of the center connecting box, and a center limit block is fixedly connected to the truncated cone on all four sides. A limit groove is provided at the lower end of the truncated cone, and a limit cylinder is sleeved inside the limit groove. A third spring is provided between the limit cylinder and the limit groove, and a first limit clamping platform is provided at one end of the second connecting sleeve of the main support, and a second limit clamping platform is provided at one end of the center limit block, and the second limit clamping platform is clamped with the first limit clamping platform. Installation grooves are provided at the four corners of the center connecting box, and a first installation hole is provided transversely through the installation groove, and a first rotating shaft is inserted in the first installation hole. The second connecting sleeve of the main support is movably arranged on the first rotating shaft, and a main support is provided at one end of the second connecting sleeve of the main support.

[0010] Preferably, a limiting rod is fixed at the middle position of the bottom of the central connection box, and the middle position of the top of the truncated table is hollowed out and movably sleeved on the periphery of the limiting rod, the third spring is sleeved on the outer ring of the limiting rod, and the two ends of the third spring respectively press against the upper inner wall of the truncated table and the lower inner wall of the limiting cylinder, the bottom end of the limiting cylinder is fixedly installed with a second supporting foot, and the limiting cylinder is installed and connected with the limiting rod of the lower body in the central connection box in the direction of the central axis;

[0011] The main support is provided with an auxiliary support terminal connection, and two adjacent auxiliary support terminal connections are each provided with an auxiliary support, an auxiliary support middle connection is hinged between the two auxiliary supports, and a first supporting foot is fixedly installed at the lower end of the auxiliary support middle connection;

[0012] A main support first connecting sleeve is fixedly installed on the main support end portion close to one end of the auxiliary support terminal, and a connecting seat is hinged on the main support first connecting sleeve.

[0013] Preferably, the auxiliary support end is provided with a first rotating pin and a second rotating pin, and the auxiliary support end is movably connected to the main support through the first rotating pin, and the auxiliary support end is movably connected to the auxiliary support through the second rotating pin, and a third through hole is provided on the central connecting box located in the middle of the pulling handle, and a locking plate is plugged and installed inside the third through hole, and the upper part of the locking plate is located in the middle of the pulling handle, and a clamping head is fixedly installed on one end of the top of the locking plate, and a locking head is fixed on one side of the inner ring of the pulling handle, and the lock head is clamped with the clamping head, and a mounting plate is provided at the lower end of the central connecting box located on one side of the third through hole, a return spring is provided at the upper end of the mounting plate, and the return spring is located on one side of the lock plate at the lower end of the central connecting box, and the other side of the return spring is abutted against a side plate, and two sliding grooves are provided on the central connecting box located on one side of the third through hole, and two rods are provided between the mounting plate and the lock plate, and the two connecting rods are plugged in the two sliding grooves.

[0014] Preferably, the fixing frame is arranged in two layers, connected by a top plate in the middle, the fixing frame is integrally formed, and a synchronous steering groove is opened through the fixing frame located at the lower end of the two upper rotating shaft reciprocating grooves, and a synchronous center groove is opened in the middle position of the fixing frame, and the two synchronous steering grooves are symmetrically arranged with respect to the synchronous center groove, and a synchronous steering shaft is movably arranged inside the two synchronous steering grooves.

[0015] Preferably, the synchronous steering shaft is arranged through a through hole on the railing connecting piece, and a synchronous connecting piece is arranged on each of the two synchronous steering shafts, and the two synchronous connecting pieces are both located outside the fixed frame, and the other ends of the two synchronous connecting pieces are overlapped and penetrated by a synchronous connecting shaft, and the synchronous connecting shaft is arranged through a synchronous center groove.

[0016] Preferably, a second through hole and an auxiliary groove are formed through both sides of the lower end of the fixing frame, and the second through hole is located on one side of the auxiliary groove;

[0017] The two second through holes are both plugged with lower rotating shafts, and a lower railing is installed on the lower rotating shaft. The two auxiliary grooves are both plugged with reinforcing shafts, and the reinforcing shafts are plugged with the tail end of the lower railing. The two upper railings and one end of the two lower railings are each provided with mounting holes, and the two mounting holes on the same side are connected and rotated and installed on the same lifting plate. The fixing frame is provided with two first through holes, and the two fixed shafts are penetrated in the two first through holes. A connecting nail is penetrated at one end of the railing connector, and one end of the upper railing is inserted in the railing connector and is penetrated and fixed by the connecting nail.

[0018] Preferably, the extrusion plate is located on the side of the driven plate away from the spinning drive plate, the lock tongue and the side opposite to the extrusion plate are both inclined surfaces, the spinning drive plate and the driven plate are located on the inner side of the first railing sleeve, the spinning plate is located on the side of the spinning drive plate close to the driven plate, a second spring is installed on one side of the lock tongue, and the lock tongue is located between the second spring and the lifting gear bar.

[0019] Preferably, the spinning plate is arranged in a circular array with the axis of the spinning drive plate as the center, the number of the sliding grooves is equal to that of the spinning plates, one side of the spinning plate is an inclined surface, a lifting gear strip is arranged in the top cover of the column, a plurality of lock slots are opened on the lifting gear strip, the lock tongues are arranged correspondingly to the lock slots, and the lock slots are arranged in a linear array.

[0020] Preferably, a rear cover is provided on one side of the lifting plate, the locking tongue is located between the rear cover and the lifting plate, a torsion spring is installed in the knob, and the torsion spring is located between the knob and the first railing sleeve;

[0021] The lock tongue and the extrusion plate both penetrate the lifting plate and can slide inside it, the lock tongue and the extrusion plate are slidingly matched, the knob is equipped with a safety button, the safety button is snap-fitted with the knob, a first spring is provided on the inner side of the safety button, and a second railing sleeve is rotatably installed on the lifting plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The folding support frame assembly of the present invention realizes a simple and efficient folding and unfolding mechanism by virtue of the design of the pull handle, the connecting rod, the round table, the central limit block, the second limit card platform, the main support second connecting sleeve and the first limit card platform. The user only needs to lift the pull handle to easily complete the folding action of the entire support frame, and the operation is convenient. When it needs to be unfolded, it is only necessary to pull the column in four directions, and then gently press the central connecting box downward until the first limit card platform is firmly connected to the second limit card platform, and the entire unfolding process is completed. This design not only greatly simplifies the installation and folding and releasing process, but also significantly improves the convenience and efficiency of operation, truly saving time and effort, and after being fully gathered, it occupies a small area, which is convenient for storage.

[0024] 2. The folding railing assembly of the present invention can achieve a stable locking effect in the unfolded state by virtue of the fixed groove and fixed axis design. The folding operation can be completed only when the user pulls the column outward, causing the column to pull the upper railing and successfully release the fixed groove from the constraint of the fixed axis. This design not only significantly enhances the stability of the railing in the unfolded state, effectively avoids accidental folding due to mis-touch, but also greatly improves the safety of use. In addition, the upper rotating shaft arranged in the assembly serves as the rotation center axis, which perfectly cooperates with the carefully designed upper rotating shaft reciprocating groove, ensuring the smooth switching between the locked and unlocked states, and further optimizing the convenience and reliability of the locking operation.

[0025] 3. The lifting railing lock assembly of the present invention includes a knob, a rotary driving plate, a driven plate, a pressing plate, a locking tongue, a lifting gear strip and a rotary plate. The rotary driving plate can be rotated by rotating the knob to squeeze the driven plate, so that the driven plate moves toward the locking tongue. The squeezing plate on one side of the driven plate squeezes the locking tongue to make the locking tongue escape from the locking groove, so that the lifting plate can move up and down. When the required height is adjusted, the hand rotating the knob is released to insert the locking tongue into the corresponding locking groove to adjust the height of the lifting plate, so that the height of the railing on the side of the baby folding bed close to the parents' bed is lowered, thereby making it convenient for parents to check the baby's status without hindrance at night. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a basic structural schematic diagram of the present invention when it is unfolded.

[0027] Figure 2 It is a schematic diagram of the basic structure of the present invention when gathered.

[0028] Figure 3 For the present invention Figure 2 sectional view of .

[0029] Figure 4 It is a schematic diagram of the basic structure of the folding support frame assembly of the present invention when it is gathered.

[0030] Figure 5 It is a basic structural schematic diagram of the folding support frame assembly of the present invention when it is unfolded.

[0031] Figure 6 For the present invention Figure 5 Another perspective of the picture.

[0032] Figure 7 It is an enlarged view of the central connection box of the folding support frame assembly of the present invention.

[0033] Figure 8 This is one of the partial exploded views of the folding support frame assembly of the present invention.

[0034] Fig. 9 It is a partial enlarged view of the folding support frame assembly of the present invention.

[0035] Fig.10 It is a partial cross-sectional view of the folding support frame assembly of the present invention.

[0036] Fig.11 This is the second partial exploded view of the folding support frame assembly of the present invention.

[0037] Fig.12 This is one of the cross-sectional views of the central connection box of the folding support frame assembly of the present invention.

[0038] Fig.13 This is the second cross-sectional view of the central connection box of the folding support frame assembly of the present invention.

[0039] Fig.14 It is a partial exploded view of the central connection box of the folding support frame assembly of the present invention.

[0040] Fig.15 It is a top view of the folding support frame assembly of the present invention.

[0041] Fig.16 It is a schematic diagram of the overall structure of the folding railing assembly of the present invention.

[0042] Fig.17 This is one of the partial structural schematic diagrams of the folding railing assembly of the present invention.

[0043] Fig.18 This is the second partial structural schematic diagram of the folding railing assembly of the present invention.

[0044] Fig.19 It is a schematic diagram of the installation structure of the fixing frame of the folding handrail assembly of the present invention.

[0045] Fig. 20 It is an enlarged view of the fixing frame of the folding railing assembly of the present invention.

[0046] Fig.21 It is a schematic structural diagram of the folding state of the folding railing assembly of the present invention.

[0047] Fig. 22 It is a partial enlarged view of the folding state of the folding railing assembly of the present invention.

[0048] Fig.23 It is a schematic diagram of the overall installation structure of the folding railing assembly of the present invention.

[0049] Fig.24 It is a basic structural schematic diagram of the lifting rail lock assembly of the present invention.

[0050] Fig.25 The lifting rail lock assembly of the present invention Fig.24 Partial view of the main view.

[0051] Fig.26 The lifting rail lock assembly of the present invention Fig.25 Partial view of the AA section view.

[0052] Fig. 27 It is a schematic diagram of the positional relationship of the lock tongue of the lifting rail lock assembly of the present invention installed on the lifting plate.

[0053] Fig.28 The lifting rail lock assembly of the present invention Fig. 27 AA cross-sectional view.

[0054] Fig.29 The lifting rail lock assembly of the present invention Fig. 27 Schematic diagram of the position of the locking tongue and the squeeze plate when the driven plate is pressed.

[0055] Fig.30 The present invention is a schematic diagram of the structural relationship between the lock tongue and the extrusion plate of the lifting rail lock assembly.

[0056] Fig.31 It is a schematic diagram of the movement direction of the lock tongue when the extrusion plate of the lifting rail lock assembly of the present invention is extruded.

[0057] Fig.32 It is a schematic diagram of the movement direction of the lock tongue when the extrusion plate of the lifting rail lock assembly of the present invention stops squeezing.

[0058] Fig.33 The figure is a schematic diagram of the positional relationship between the lock tongue and the extrusion plate of the lifting rail lock assembly of the present invention.

[0059] Fig.34 The lifting rail lock assembly of the present invention Fig.33 Another perspective of the picture.

[0060] Fig.35 The lifting rail lock assembly of the present invention Fig.33 Another form of perspective diagram.

[0061] Fig.36 It is a partial structural schematic diagram of the lifting rail lock assembly of the present invention.

[0062] Fig.37 It is a partial structural exploded view of the lifting rail lock assembly of the present invention.

[0063] Fig.38 The lifting rail lock assembly of the present invention Fig.37 Another perspective of the picture.

[0064] Fig.39 The lifting rail lock assembly of the present invention Fig.37 The lifting rail lock assembly Fig.15 Top view of the .

[0065] In the figure: 100, folding support frame assembly; 101, central connection box; 102, main support; 103, auxiliary support end connection; 104, auxiliary support; 105, auxiliary support middle connection; 106, first support leg; 107, first main support connection sleeve; 108, connection seat; 109, second support leg; 110, first rotation pin; 111, second rotation pin; 112, first rotation axis; 113, mounting groove; 114, first mounting hole; 115 , main support second connecting sleeve; 116, first limit clamping platform; 117, round platform; 118, limit rod; 119, center limit block; 120, second limit clamping platform; 121, pull handle; 122, first connecting rod; 123, lock plate; 124, third through hole; 125, lock head; 126, mounting plate; 127, handle pin; 128, reset spring; 129, limit cylinder; 130, third spring; 131, limit groove;

[0066] 200, folding railing assembly; 201, upper railing; 202, railing connector; 203, fixing frame; 204, upper rotating shaft reciprocating groove; 205, upper rotating shaft; 206, fixing shaft; 207, auxiliary groove; 208, reinforcing shaft; 209, lower rotating shaft; 210, lower railing; 211, fixing groove; 212, synchronous steering shaft; 213, synchronous connecting piece; 214, synchronous connecting shaft; 215, synchronous center groove; 216, first through hole; 217, second through hole; 218, synchronous steering groove; 219, connecting nail;

[0067] 300, lifting railing lock assembly; 301, column; 302, column top cover; 303, lifting plate; 304, first railing cover; 305, knob; 351, lever; 306, safety button; 361, first spring; 308, lifting gear bar; 381, lock slot; 309, spinning drive plate; 310, driven plate; 311, second spring; 312, torsion spring; 313, lock tongue; 314, extrusion plate; 315, spinning plate; 316, second rotating shaft; 317, rear cover plate; 318, second railing cover. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] like Figure 1-3As shown, the folding baby crib stand provided in this embodiment includes a folding support frame assembly 100 , a folding railing assembly 200 , and a lifting railing lock assembly 300 .

[0070] The folding support frame assembly 100 can be placed flat on the ground to serve as a base, and a plurality of columns are installed on the folding support frame assembly 100 , and a height-adjustable lifting rail lock assembly 300 is installed on the column. The four lifting rail lock assemblies 300 are connected by a folding rail assembly 200 .

[0071] Reference Figure 4-15 The folding support frame assembly 100 includes a central connecting box 101, a pulling handle 121 is provided at the upper end of the central connecting box 101, two first connecting rods 122 are fixed to the lower part of one end of the pulling handle 121, and the two first connecting rods 122 are embedded in the middle position of the central connecting box 101, a handle pin 127 is provided at the connection between the central connecting box 101 and the pulling handle 121, a round table 117 is provided at the lower end of the central connecting box 101, and a central limiting block 119 is fixedly connected to the four sides of the round table 117, and a limiting groove 131 is provided at the lower end of the round table 117, and a limiting cylinder 129 is sleeved inside the limiting groove 131, and a third spring 130 is provided between the limiting cylinder 129 and the limiting groove 131.

[0072] The four corners of the central connection box 101 are provided with mounting grooves 113, and a first mounting hole 114 is horizontally penetrated through the mounting groove 113. The first rotating shaft 112 is inserted into the first mounting hole 114, and a main support second connecting sleeve 115 is provided on the first rotating shaft 112. The main support 102 is provided at one end of the main support second connecting sleeve 115.

[0073] It should be noted that the folding support frame assembly 100 adopts the lever principle when designing, and at the same time gives the central limit block 119 on the round table 117 a certain range of motion, and is designed on the basis of satisfying that the second limit card platform 120 is separated from the first limit card platform 116. Figure 15 to Figure 4 When the state is realized, first pull the handle 121. Due to the lever principle, the rotation around the handle pin 127 will drive the first connecting rod 122 to be pressed down, and the round table 117 will be pressed downward, and the center limit block 119 will move downward. At this time, the second limit card platform 120 will be separated from the first limit card platform 116, so the main support second connecting sleeve 115 will rotate around the center connecting box 101, and then drive the main support 102 to rotate, and continue to pull the handle 121, which will make the four connecting seats 108 approach each other, thereby realizing the overall folding.

[0074] A first position limiting clamping platform 116 is disposed at one end of the second connecting sleeve 115 of the main support, a second position limiting clamping platform 120 is disposed at one end of the central position limiting block 119 , and the second position limiting clamping platform 120 is clamped with the first position limiting clamping platform 116 .

[0075] In this embodiment, the second limit card platform 120 and the first limit card platform 116 are adapted to realize the folding and opening of the folding support assembly. In the folded state, the second limit card platform 120 is separated from the control of the first limit card platform 116, and in the opened state, the second limit card platform 120 limits and locks the first limit card platform 116.

[0076] A limiting rod 118 is fixed in the middle position of the bottom of the central connecting box 101, and the middle position of the top of the table 117 is hollowed out and movably sleeved on the outer periphery of the limiting rod 118. The third spring 130 is sleeved on the outer ring of the limiting rod 118, and the two ends of the third spring 130 are respectively against the upper inner wall of the table 117 and the lower inner wall of the limiting cylinder 129. The bottom end of the limiting cylinder 129 is fixedly installed with a second supporting foot 109, and the limiting cylinder 129 is installed and connected to the limiting rod 118 connected to the lower body in the middle of the central connecting box 101 in the direction of the central axis.

[0077] When in the open state, the third spring 130 is reset to support the central limiting block 119 , so that the second limiting clamping platform 120 can limit and lock the first limiting clamping platform 116 .

[0078] The main support 102 is provided with an auxiliary support terminal 103 , and two adjacent auxiliary support terminal connections 103 are each provided with an auxiliary support 104 . An auxiliary support middle connection 105 is hinged between the two auxiliary supports 104 , and a first supporting foot 106 is fixedly mounted at the lower end of the auxiliary support middle connection 105 .

[0079] The auxiliary support 104 and the auxiliary support middle connection 105 can strengthen the connection with the main support 102 and effectively avoid shaking during use. At the same time, the setting of the auxiliary support middle connection 105 and the auxiliary support end connection 103 can strengthen the connection while preventing the auxiliary support 104 from affecting the folding of the main support 102.

[0080] A main support first connecting sleeve 107 is fixedly installed on the end of the main support 102 close to one end of the auxiliary support terminal 103 , and a connecting seat 108 is hinged on the main support first connecting sleeve 107 .

[0081] The auxiliary support terminal 103 is provided with a first rotating pin 110 and a second rotating pin 111 , and the auxiliary support terminal 103 is movably connected to the main support 102 via the first rotating pin 110 , and the auxiliary support terminal 103 is movably connected to the auxiliary support 104 via the second rotating pin 111 .

[0082] Specifically, in the open state, the lock plate 123 needs to be manually moved so that the clamping head is clamped on the lock head 125. When it needs to be folded, the lock plate 123 is manually moved again to make the clamping head disengage from the lock head 125, so that the subsequent pulling operation of the pull handle 121 can be realized.

[0083] A third through hole 124 is provided on the central connecting box 101 located in the middle of the pulling handle 121, and a locking plate 123 is installed inside the third through hole 124, and the upper part of the locking plate 123 is located in the middle of the pulling handle 121, and a clamping head is fixedly installed on one end of the top of the locking plate 123, and a locking head 125 is fixed on one side of the inner ring of the pulling handle 121, and the locking head 125 is snapped with the clamping head, and a mounting plate 126 is provided at the lower end of the central connecting box 101 located on one side of the third through hole 124, and a return spring 128 is provided on the upper end of the mounting plate 126, and the return spring 128 is located on one side of the locking plate 123 at the lower end of the central connecting box 101, and the other side of the return spring 128 is abutted against a side plate, and two sliding grooves are provided on the central connecting box 101 located on one side of the third through hole 124, and two connecting rods are provided between the mounting plate 126 and the locking plate 123, and the two connecting rods are inserted in the two sliding grooves.

[0084] It should be noted that when the lock plate 123 is in the locked state, the pull handle 121 cannot be pulled. At this time, the return spring 128 is in an extended state. When folding is required, the lock plate 123 is slid to the left. At this time, the lock plate 123 vertical rod moves in the third through hole 124, and one side of the vertical rod squeezes the return spring 128 to compress until the clamping head leaves the lock head 125, so that the pull handle 121 can be pulled to achieve the subsequent folding operation.

[0085] Reference Figure 16-24 , the folding railing assembly 200 includes a fixing frame 203, and two fixing shafts 206 are arranged at the middle position of the fixing frame 203;

[0086] Two upper rotating shaft reciprocating grooves 204 are formed on the fixed frame 203, and the two upper rotating shaft reciprocating grooves 204 are respectively located on both sides of the two fixed shafts 206, and upper rotating shafts 205 are inserted into the two upper rotating shaft reciprocating grooves 204, and a railing connector 202 is installed on one side of each upper rotating shaft 205, and an upper railing 201 is fixedly installed on one side of the two railing connectors 202;

[0087] A fixing groove 211 is formed at one end of each railing connecting member 202 , and the two fixing grooves 211 are respectively engaged with the two fixing shafts 206 .

[0088] In this embodiment, the railing connector 202 can lock the upper railing 201 in the unfolded state. It should be noted that the shape of the railing connector 202 is as follows: Fig.17 As shown, the lower part of the railing connector 202 is semicircular, and a fixing groove 211 opened at one end is clamped on the fixing shaft 206 in the unfolded state. When folding is required, the upper railing 201 is pulled. At this time, the upper rotating shaft 205 moves horizontally outward for a distance in the upper rotating shaft reciprocating groove 204, so that the fixing groove 211 is disengaged from the clamping position of the fixing shaft 206, and then the upper railing 201 is rotated upward to achieve the folding of the upper railing 201.

[0089] The fixing frame 203 is a two-layer arrangement, connected by a top plate in the middle, and the fixing frame 203 is integrally formed. The overall structure of the folding railing assembly 200 is exactly the same in shape and structure when viewed from the front and rear. When describing, only the front view is described, and the rear view is exactly the same as the front view, so it is not repeated here.

[0090] A synchronous steering groove 218 is formed through the fixing frame 203 at the lower ends of the two upper rotating shaft reciprocating grooves 204 . A synchronous center groove 215 is formed in the middle of the fixing frame 203 . The two synchronous steering grooves 218 are symmetrically arranged with respect to the synchronous center groove 215 .

[0091] A synchronous steering shaft 212 is movably arranged inside the two synchronous steering grooves 218, and the synchronous steering shaft 212 passes through the through hole on the railing connecting piece 202. A synchronous connecting piece 213 is arranged on the two synchronous steering shafts 212, and the two synchronous connecting pieces 213 are both located outside the fixed frame 203. The other ends of the two synchronous connecting pieces 213 are overlapped and connected, and a synchronous connecting shaft 214 is passed through, and the synchronous connecting shaft 214 passes through the synchronous center groove 215.

[0092] The folding railing assembly 200 forms a synchronous linkage mechanism with the upper railings 201 on both sides by means of the synchronous steering shaft 212, the synchronous connecting piece 213 and the synchronous connecting shaft 214, and the synchronous steering groove 218 and the synchronous center groove 215. Such a design enables the upper railings 201 on both sides to be folded at the same time when folding. When folding, the upper railings 201 move outwards, the fixing groove 211 is disengaged from the fixing shaft 206, and the railing connector 202 pulls the synchronous connecting piece 213 through the steering connecting shaft. , so that the synchronous connecting piece 213 drives the synchronous connecting shaft 214 to move upward in the synchronous center groove 215. Since one end of the two synchronous connecting pieces 213 is overlapped and penetrated by the synchronous connecting shaft 214, when the synchronous connecting shaft 214 moves upward, the two synchronous connecting pieces 213 move synchronously along the synchronous steering groove 218, so that the synchronous steering shaft 212 installed on the two synchronous connecting pieces 213 also moves in the synchronous steering groove 218, and finally the upper railing 201 installed on the railing connector 202 can be folded synchronously.

[0093] A second through hole 217 and an auxiliary groove 207 are formed through both sides of the lower end of the fixing frame 203 , and the second through hole 217 is located at one side of the auxiliary groove 207 .

[0094] It should be noted that, in the existing installation of the folding rod, an axis is used for installation, which will cause the axis installation to shake due to the torque, resulting in instability during rotation or use. When designing the folding railing assembly 200, based on the installation of a lower rotating shaft 209 at one end of the lower railing 210, a reinforcing shaft 208 and an auxiliary groove 207 for cooperating with the movement of the reinforcing shaft 208 are also provided at the end of the lower railing 210, that is, the rear end of the lower rotating shaft 209. This adds a force point to the lower railing 210 when it is rotated or used, and the movement of this force point has a certain trajectory, so that it is limited to the reinforcing shaft 208, which better meets the stability of the lower railing 210 during rotation or use, and better guarantees the strength of the folding railing assembly 200.

[0095] The two second through holes 217 are both inserted with lower rotating shafts 209 , on which lower railings 210 are mounted. The two auxiliary grooves 207 are both inserted with reinforcing shafts 208 , which are inserted at the rear end of the lower railings 210 .

[0096] One end of the two upper rails 201 and the two lower rails 210 are provided with mounting holes, and the two mounting holes on the same side are mounted on the same lifting plate 303 through a connecting shaft.

[0097] Specifically, when folding, the upper railing 201 can be folded by operating the upper railing 201, such as Fig.23 As shown, the lower railing 210 can be linked with the upper railing 201 only when the lower railing 210 is installed on the same lifting plate 303 as the upper railing 201, and the setting of the lower railing 210 better ensures the strength of the railing when in use.

[0098] Two first through holes 216 are provided on the fixing frame 203, and two fixing shafts 206 are penetrated in the two first through holes 216. A connecting nail 219 is penetrated at one end of the railing connecting piece 202, and one end of the upper railing 201 is inserted into the railing connecting piece 202 and is penetrated and fixed by the connecting nail 219.

[0099] It should be noted that if Fig.16 As shown, this is the unfolded state of the folding railing assembly 200. At this time, the two upper railings 201 and the two lower railings 210 are all in the same straight line. At the same time, the two upper railings 201 are pushed inward for a distance, and their respective upper rotating shafts 205 are pushed to the innermost side of the upper rotating shaft reciprocating groove 204, so that the fixing groove 211 is clamped on the fixing shaft 206 for locking, which effectively avoids the tendency of folding due to external shaking. The two lower railings 210 are also in the unfolded state following the upper railings 201 under the drive of the lifting plate 303. At this time, the reinforcing shaft 208 rotates to a position on the same horizontal line as the lower rotating shaft 209.

[0100] When the folding railing assembly 200 needs to be folded, that is, when it needs to be folded to a position such as Fig.21 In the state shown, the left upper railing 201 is pulled to the left, and the right upper railing 201 is pulled to the right, so that the two fixing grooves 211 are separated from their respective fixing shafts 206. At this time, the respective upper rotating shafts 205 will move a distance in their respective directions to meet the control of the fixing grooves 211 being separated from the fixing shafts 206, and then the two upper railings 201 are rotated upward. At this time, under the limit control of the synchronous steering shaft 212, the synchronous connecting piece 213 and the synchronous connecting shaft 214, and the set synchronous steering groove 218 and the synchronous center groove 215, the upper railings 201 on both sides can be folded at the same time. When folding, the two railing connectors 202 simultaneously pull the synchronous connecting piece 213 installed thereon to move along the synchronous steering groove 218, and at the same time, the synchronous connecting piece 213 moves upward with the synchronous connecting shaft 214 in the synchronous center groove 215, so that the upper railings 201 on both sides are folded at the same time, and the two lower railings 210 at the lower end will also move upward under the drive of the lifting plate 303. The provided reinforcing shaft 208 and the auxiliary groove 207 can increase the connection point between the lower railing 210 and the fixing frame 203, and increase the stability of the installation of the lower railing 210. After folding, as shown in FIG. Fig.21 As shown, the two upper rails 201 are close to the top plate of the fixing frame 203, and the two lower rails 210 are folded to the middle position of the two layers of the fixing frame 203, which can greatly save the space occupied after folding.

[0101] Reference Figure 25-39 The lifting railing lock assembly 300 includes a column 301 and a column top cover 302. The column top cover 302 is hollow inside and is provided with a plurality of reinforcing plates for improving strength. The column 301 and the column top cover 302 are snap-fitted. A sliding groove is provided on the column 301 and the column top cover 302. A lifting plate 303 is movably installed on one side of the column 301. The lifting plate 303 is slidably snap-fitted in the sliding groove. A first railing sleeve 304 is sleeved and rotatably installed on the lifting plate 303. A knob 305 is rotatably installed on the first railing sleeve 304. The first railing sleeve 304 can be used to install the railing.

[0102] In the detailed description of this embodiment, please refer to Fig.26 As shown, we can see that a second rotating shaft 316 is installed on the lifting plate 303, and the second rotating shaft 316 is specifically designed in the form of a pin. One end of the second rotating shaft 316 is firmly embedded in the internal structure of the lifting plate 303, and the other end passes through the central hole of the first railing sleeve 304 and extends to the inside of the knob 305. Through such a setting, the second rotating shaft 316 not only plays a key connecting role, but also realizes the effective limit between the first railing sleeve 304 and the knob 305, ensuring the stability and reliability of the entire assembly.

[0103] In actual operation, when the lifting rail lock assembly 300 of the present application needs to be disassembled, the user only needs to simply remove the second rotating shaft 316 to easily separate the entire assembly. This design not only simplifies the disassembly process, but also greatly improves the user's operational convenience. At the same time, due to the use of the second rotating shaft 316, the entire assembly can maintain structural integrity and stability during the assembly and disassembly process, thereby further improving the product's service life and safety.

[0104] Reference Figure 28-29 As shown, a spinning drive plate 309 and a driven plate 310 are sleeved on the second rotating shaft 316, and the spinning drive plate 309 and the driven plate 310 are located on the inner side of the first railing sleeve 304. The knob 305 is arranged in cooperation with the spinning drive plate 309. In this embodiment, the spinning drive plate 309 and the driven plate 310 are both designed as circular plates, and they are both rotationally matched with the second rotating shaft 316 to ensure flexible rotation. It is worth noting that two oppositely arranged levers 351 are provided on one side of the knob 305, and two oppositely arranged openings are correspondingly opened on the first railing sleeve 304 so that the lever 351 can smoothly penetrate and slide therein, and the lever 351 also cooperates with the notch on the spinning drive plate 309 (refer to Figure 37-39 ), so that the knob 305 can drive the spinning drive plate 309 to rotate.

[0105] Such a design can ensure that when the knob 305 is rotated, only the rotary drive plate 309 will be driven to rotate, and the first railing sleeve 304 will not be caused to rotate in conjunction. Such a mechanism not only ensures the independence of the operation of the knob 305, but also avoids unnecessary linkage of components, thereby ensuring the stability and reliability of the entire lifting railing lock assembly 300. The user can simply rotate the knob 305 to achieve convenient control of the lifting railing lock assembly 300 without worrying about interference or misoperation of other components.

[0106] A plurality of spinning plates 315 are provided on one side of the spinning drive plate 309 close to the driven plate 310. The spinning drive plate 309 and the spinning plates 315 are formed as a whole. The spinning plates 315 are arranged in a circular array with the axis of the spinning drive plate 309 as the center. A plurality of sliding grooves are provided on the driven plate 310. The number of the sliding grooves is equal to the number of the spinning plates 315. Each spinning plate 315 is slidably connected with the corresponding sliding groove.

[0107] In this embodiment, please refer to Fig.36 as well as Fig.30The number of the spinning plates 315 is set to two. One side of the spinning plate 315 adopts an inclined surface design, which is matched with the sliding groove on the driven plate 310. One side of the sliding groove is also designed as an inclined surface. The two inclined surfaces are matched to each other, which greatly promotes the smooth extrusion of the spinning plate 315 on the driven plate 310.

[0108] Furthermore, if Fig.33 As shown in the figure, when we rotate the knob 305 clockwise, this action will drive the spinning plate 315 on one side of the spinning drive plate 309 to rotate accordingly. During the rotation process, the spinning plate 315 will apply an oblique force to the sliding groove of the driven plate 310 it contacts. This force will effectively push the driven plate 310 to move in a predetermined direction, thereby achieving precise regulation of the lifting rail lock assembly 300.

[0109] The design in this embodiment not only takes into account the compactness of the structure and the practicality of the function, but also further optimizes the operational smoothness of the component by adopting low-friction materials. Such a design not only improves the user experience, but also ensures the stability and reliability of the lifting railing lock assembly 300 in long-term use.

[0110] A pressing plate 314 is provided on one side of the driven plate 310, and the driven plate 310 and the pressing plate 314 are formed as a conjoined body. A locking tongue 313 is movably installed in the column top cover 302, and the sides opposite to the pressing plate 314 are both inclined surfaces. The locking tongue 313 and the pressing plate 314 are slidingly matched. A lifting gear strip 308 is provided in the column top cover 302, and a plurality of locking grooves 381 are provided on the lifting gear strip 308. The locking tongue 313 and the locking grooves 381 are correspondingly matched and arranged, and the locking grooves 381 are arranged in a linear array. A rear cover plate 317 is provided on one side of the lifting plate 303, and the locking tongue 313 is located between the rear cover plate 317 and the lifting plate 303. A second railing sleeve 318 is rotatably installed on the lifting plate 303, and the upper railing 201 and the lower railing 210 of the folding railing assembly 200 are respectively installed in the corresponding first railing sleeve 304 and the second railing sleeve 318.

[0111] Specifically, in this embodiment, the material of the lock tongue 313 and the extrusion plate 314 is a low friction coefficient material, which allows the extrusion plate 314 to squeeze the lock tongue 313 more smoothly and reduces unnecessary resistance and wear.

[0112] Please refer to Figure 3We can see that a long through hole is specially designed on the lifting plate 303. The function of this through hole is to limit the locking tongue 313 and the extrusion plate 314 and allow them to move freely therein. Such a design not only ensures the flexibility of the component, but also ensures its stability during operation. In this embodiment, the inclined surface angles of the locking tongue 313 and the extrusion plate 314 are set to 30-60 degrees. In this embodiment, the angle of the inclined surface is set to 45 degrees, aiming to achieve the best extrusion effect and smooth sliding action.

[0113] Further, when the knob 305 is rotated clockwise (depending on the location of the installation and the required rotation direction, in this embodiment, please refer to Fig.31 As shown in FIG. 3 , it will drive the spinning plate 315 on one side of the spinning driving plate 309 to rotate accordingly. During the rotation process, the spinning plate 315 will apply an oblique force to the sliding groove of the driven plate 310 it contacts. This force will push the driven plate 310 to move along the long strip through hole toward the direction of the lock tongue 313 (this step can be referred to Fig.28 and Fig.29 As the driven plate 310 moves, the extrusion plate 314 on one side thereof will gradually approach and squeeze the lock tongue 313. Eventually, the squeezing force will be strong enough to make the lock tongue 313 smoothly escape from the lock slot 381, thereby realizing the unlocking action of the lifting rail lock assembly 300.

[0114] A second spring 311 is installed on one side of the lock tongue 313 , and the lock tongue 313 is located between the second spring 311 and the lifting and lowering gear bar 308 . A torsion spring 312 is installed in the knob 305 , and the torsion spring 312 is located between the knob 305 and the first railing sleeve 304 .

[0115] In this embodiment, refer to Fig.31 and Fig.32 When the knob 305 stops rotating, the second spring 311 drives the locking tongue 313 to move toward the lifting and lowering gear bar 308, and makes the locking tongue 313 engage with the locking groove 381, so that the locking tongue 313 squeezes the squeezing plate 314, and the driven plate 310 returns to the predetermined position.

[0116] A safety button 306 is mounted on the knob 305 , and the safety button 306 is engaged with the knob 305 . A first spring 361 is disposed inside the safety button 306 .

[0117] It should be noted that when the safety button 306 is not pressed, the safety button 306 and the knob 305 are in a snap-fit ​​fit, which can effectively prevent children from twisting the knob 305 to cause the lifting plate 303 to fall rapidly and thus cause a dangerous situation. When the safety button 306 is pressed, the snap-fit ​​fit between the safety button 306 and the knob 305 fails. At this time, the knob 305 can be rotated alone to adjust the height of the lifting plate 303. It should be noted that.

[0118] The working principle of the folding support frame assembly 100 is as follows: in the open state, the lock plate 123 needs to be manually toggled so that the lock head 125 is clamped on the lock plate 123. When it needs to be folded, the lock plate 123 needs to be manually toggled so that the lock head 125 is separated from the lock plate 123, and the pulling effect on the pulling handle 121 can be achieved. Pulling the pulling handle 121, due to the lever principle, the rotation around the handle pin 127 will drive the first connecting rod 122 to press down. At this time, the round table 117 is pressed downward and the center limit block 119 will move downward. At this time, the second limit card platform 120 is separated from the first limit card platform 116. Therefore, the second connecting sleeve 115 of the main support will rotate around the center connecting box 101, thereby driving the main support 102 to rotate. Continuing to pull the pulling handle 121 will make the four columns 301 approach each other, thereby realizing the overall folding. By arranging the third spring 130, the limit cylinder 129 and the second support foot at the lower part of the limit groove 131 of the round table 117 109, which can provide a certain position space for the movement of the round table 117. In the process of lifting the handle 121, the first connecting rod 122 presses the round table 117 downward. At this time, the round table 117 moves downward within the elastic range of the third spring 130, so that the first limit card platform 116 is out of the control of the second limit card platform 120, thereby realizing folding. When it is necessary to open, pull the column 301 to four angles, and then press the handle 121 downward. Due to the reset effect of the third spring 130, the first limit card platform 116 is connected to the second limit card platform 120, and the opening operation is realized; the auxiliary support 104 and the auxiliary support middle connection 105 are set, which can strengthen the connection with the main support 102 and effectively avoid shaking during use. At the same time, the setting of the auxiliary support middle connection 105 and the auxiliary support end connection 103 can strengthen the connection while preventing the auxiliary support 104 from affecting the folding of the main support 102.

[0119] The unfolding and folding of the folding rail assembly 200 is performed along with the folding support frame assembly 100. When the folding support frame assembly 100 is unfolded through the above operation, the folding rail assembly 200 will also unfold accordingly. Fig.21, the separated column 301 of the upper railing 201 on the left is pulled to the left, and the separated column 301 of the upper railing 201 on the right is pulled to the right, so that the two fixed grooves 211 are separated from their respective fixed shafts 206. At this time, the respective upper rotating shafts 205 will move a distance in their respective directions to meet the control of the fixed grooves 211 being separated from the fixed shafts 206, and then the two upper railings 201 are rotated upward. At this time, under the limit control of the synchronous steering shaft 212, the synchronous connecting piece 213 and the synchronous connecting shaft 214, and the set synchronous steering groove 218 and the synchronous center groove 215, the upper railings 201 on both sides can be folded at the same time when folded. When folded, the upper railings 201 on both sides can be folded downward. By pressing the two railing connectors 202 once, an angle is formed between the two railing connectors 202. The two railing connectors 202 simultaneously pull the synchronous connecting piece 213 installed thereon to move along the synchronous steering groove 218. At the same time, the synchronous connecting piece 213 moves upward with the synchronous connecting shaft 214 in the synchronous center groove 215, so that the upper railings 201 on both sides are folded at the same time. The two lower railings 210 at the lower end will also move upward under the drive of the lifting plate 303. The provided reinforcing shaft 208 and the auxiliary groove 207 can increase the connection point between the lower railing 210 and the fixing frame 203, thereby increasing the stability of the installation of the lower railing 210. After the folding is completed, as shown in FIG. Fig.21 As shown, the two upper rails 201 are close to the top plate of the fixing frame 203, and the two lower rails 210 are folded to the middle position of the two layers of the fixing frame 203, which can greatly save the space occupied after folding.

[0120] When the height of the folding railing assembly 200 needs to be adjusted, the user first needs to press the safety button 306. This operation will release the locking connection between the safety button 306 and the first railing sleeve 304, creating conditions for subsequent adjustments. Then, the user rotates the knob 305, which is closely connected with the spinning drive plate 309, thereby driving the spinning drive plate 309 to rotate. A spinning plate 315 is provided on the spinning drive plate 309, and the spinning plate 315 slides smoothly in a preset sliding groove on the driven plate 310. This dynamic process effectively drives the driven plate 310 to move smoothly in the direction of the locking tongue 313. As the driven plate 310 moves, the squeezing plate 314 on one side thereof accurately applies pressure to the locking tongue 313, forcing the locking tongue 313 to move away from the lifting gear bar 308 until the locking tongue 313 is released. When the lifting plate 303 is completely disengaged from the locking slot 381, the height adjustment limit of the lifting plate 303 is released, and the user can freely adjust the lifting plate 303 to the desired height. When the lifting plate 303 is moved to the ideal position, the user stops rotating the knob 305. At this time, the second spring 311 plays its role, driving the locking tongue 313 to accurately insert into the corresponding locking slot 381 on the lifting gear bar 308, thereby firmly fixing the height of the lifting plate 303. At the same time, when the locking tongue 313 is inserted into the locking slot 381, the extrusion plate 314 will generate reverse pressure, so that the extrusion plate 314 automatically returns to its predetermined position, ensuring the balance and stability of the entire system. In addition, the torsion spring 312 designed on the inner side of the knob 305 can intelligently control the knob 305 to automatically return to its initial position after being released, so as to prepare for the next operation.

[0121] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Folding baby bed support, characterized by: It comprises a folding support frame assembly (100), a folding handrail assembly (200), and a lifting handrail lock assembly (300); The folding support frame assembly (100) comprises a central connection box (101), a pull handle (121) is arranged at the upper end of the central connection box (101), two first connection rods (122) are fixed to the lower part of one end of the pull handle (121), and the two first connection rods (122) are embedded in the middle position of the central connection box (101), a handle pin (127) is arranged at the connection between the central connection box (101) and the pull handle (121), and main support second connection sleeves (115) are arranged at the four corners of the central connection box (101); The folding handrail assembly (200) comprises a fixing frame (203), wherein two fixing shafts (206) are arranged at the middle position of the fixing frame (203), wherein two upper rotating shaft reciprocating grooves (204) are provided through the fixing frame (203), and the two upper rotating shaft reciprocating grooves (204) are respectively located on both sides of the two fixing shafts (206), and upper rotating shafts (205) are inserted into the two upper rotating shaft reciprocating grooves (204), and a handrail connecting piece (202) is installed on one side of each of the upper rotating shafts (205), and an upper handrail (201) is fixedly installed on one side of the two handrail connecting pieces (202), and a fixing groove (211) is provided at one end of each of the handrail connecting pieces (202), and the two fixing grooves (211) are respectively engaged with the two fixing shafts (206); The lifting railing lock assembly (300) comprises a column (301) and a column top cover (302); a lifting plate (303) is movably mounted on one side of the column (301); a first railing sleeve (304) is rotatably mounted on the lifting plate (303); a second rotating shaft (316) is rotatably mounted on the lifting plate (303); a knob (305) is rotatably mounted on the second rotating shaft (316); a rotary pressing driving plate (309) and a driven plate (310) are sleeved on the second rotating shaft (316); the knob (305) comprises a lever (316); 51), the lever (351) on the knob (305) passes through the first railing sleeve (304) and is connected with the spinning drive plate (309), the spinning drive plate (309) includes a plurality of spinning plates (315), a plurality of sliding grooves are provided on the driven plate (310), each of the spinning plates (315) is connected with the corresponding sliding groove in a sliding manner, the driven plate (310) includes an extrusion plate (314), and a locking tongue (313) is movably installed inside the back of the lifting plate (303) in contact with the column top cover (302).

2. The folding crib support according to claim 1, characterized in that: A truncated platform (117) is provided at the lower end of the central connection box (101), and a central limiting block (119) is fixedly connected to the truncated platform (117) on all four sides. A limiting groove (131) is provided at the lower end of the truncated platform (117), and a limiting cylinder (129) is sleeved inside the limiting groove (131). A third spring (130) is provided between the limiting cylinder (129) and the limiting groove (131). A first limiting clamping platform (116) is provided at one end of the main support second connection sleeve (115), and a central limiting block (119) is fixedly connected to the truncated platform (116) on one end. A second limit clamping platform (120) is arranged at the end, and the second limit clamping platform (120) is clamped with the first limit clamping platform (116); four corners of the central connection box (101) are provided with mounting grooves (113); a first mounting hole (114) is horizontally penetrated through the mounting groove (113); a first rotating shaft (112) is inserted into the first mounting hole (114); the main support second connecting sleeve (115) is movably arranged on the first rotating shaft (112); and the main support (102) is arranged at one end of the main support second connecting sleeve (115).

3. The folding crib support according to claim 2, characterized in that: A limiting rod (118) is fixed at the middle position of the bottom of the central connection box (101), and the middle position of the top of the truncated table (117) is hollowed out and movably sleeved on the periphery of the limiting rod (118), the third spring (130) is sleeved on the outer ring of the limiting rod (118), and the two ends of the third spring (130) respectively press against the upper inner wall of the truncated table (117) and the lower inner wall of the limiting cylinder (129), the bottom end of the limiting cylinder (129) is fixedly installed with a second supporting foot (109), and the limiting cylinder (129) is installed and connected with the limiting rod (118) connected to the lower body of the central connection box (101) in the direction of the central axis; The main support (102) is provided with an auxiliary support terminal connection (103), two adjacent auxiliary support terminal connections (103) are each provided with an auxiliary support (104), an auxiliary support middle connection (105) is hinged between the two auxiliary supports (104), and a first supporting foot (106) is fixedly mounted at the lower end of the auxiliary support middle connection (105); A main support first connecting sleeve (107) is fixedly mounted on the end of the main support (102) near one end of the auxiliary support terminal (103), and a connecting seat (108) is hinged on the main support first connecting sleeve (107).

4. The folding baby crib support according to claim 3, characterized in that: The auxiliary support terminal (103) is provided with a first rotating pin (110) and a second rotating pin (111), and the auxiliary support terminal (103) is movably connected to the main support (102) through the first rotating pin (110), and the auxiliary support terminal (103) is movably connected to the auxiliary support (104) through the second rotating pin (111). A third through hole (124) is provided on the central connection box (101) located in the middle of the pull handle (121), and a locking plate (123) is installed in the interior of the third through hole (124), and the upper part of the locking plate (123) is located in the middle of the pull handle (121). A clamping head is fixedly installed at one end of the top of the locking plate (123). The pull handle (121) is provided with a locking plate (123). 1) A lock head (125) is fixed on one side of the inner ring, and the lock head (125) is snap-fitted with the card head. A mounting plate (126) is arranged at the lower end of the central connection box (101) located on one side of the third through hole (124). A return spring (128) is arranged at the upper end of the mounting plate (126). The return spring (128) is located on one side of the lock plate (123) at the lower end of the central connection box (101). The other side of the return spring (128) is in contact with a side plate. Two slide grooves are provided on the central connection box (101) located on one side of the third through hole (124). Two rods are arranged between the mounting plate (126) and the lock plate (123), and the two connecting rods are inserted into the two slide grooves.

5. The folding crib support according to claim 1, characterized in that: The fixing frame (203) is provided with two layers, connected by a top plate in the middle, and the fixing frame (203) is integrally formed. The fixing frame (203) located at the lower ends of the two upper rotating shaft reciprocating grooves (204) is provided with a synchronous steering groove (218) penetrating therethrough, and a synchronous center groove (215) is provided in the middle of the fixing frame (203), and the two synchronous steering grooves (218) are symmetrically arranged with respect to the synchronous center groove (215), and a synchronous steering shaft (212) is movably arranged inside the two synchronous steering grooves (218).

6. The folding baby crib support according to claim 5, characterized in that: The synchronous steering shaft (212) is arranged to pass through the through hole on the railing connecting piece (202); a synchronous connecting piece (213) is arranged on each of the two synchronous steering shafts (212); and both synchronous connecting pieces (213) are located outside the fixing frame (203); the other ends of the two synchronous connecting pieces (213) are arranged to overlap and pass through a synchronous connecting shaft (214); and the synchronous connecting shaft (214) passes through the synchronous center groove (215).

7. The folding baby crib support according to claim 6, characterized in that: A second through hole (217) and an auxiliary groove (207) are provided on both sides of the lower end of the fixing frame (203), and the second through hole (217) is located on one side of the auxiliary groove (207); The two second through holes (217) are both plugged with lower rotating shafts (209), and a lower railing (210) is installed on the lower rotating shafts (209). The two auxiliary grooves (207) are both plugged with reinforcing shafts (208), and the reinforcing shafts (208) are plugged at the tail end of the lower railing (210). The two upper railings (201) and one end of the two lower railings (210) are both provided with mounting holes, and the two mounting holes on the same side are connected and rotatably mounted on the same lifting plate (303). The fixing frame (203) is provided with two first through holes (216), and the two fixing shafts (206) are penetrated in the two first through holes (216). One end of the railing connector (202) is penetrated with a connecting nail (219), and one end of the upper railing (201) is inserted into the railing connector (202) and is penetrated and fixed by the connecting nail (219).

8. The folding crib support according to claim 1, characterized in that: The extrusion plate (314) is located on a side of the driven plate (310) away from the spinning drive plate (309); the sides of the lock tongue (313) opposite to the extrusion plate (314) are both inclined surfaces; the spinning drive plate (309) and the driven plate (310) are located on the inner side of the first railing sleeve (304); the spinning plate (315) is located on a side of the spinning drive plate (309) close to the driven plate (310); a second spring (311) is installed on one side of the lock tongue (313); and the lock tongue (313) is located between the second spring (311) and the lifting and lowering gear bar (308).

9. The folding baby crib support according to claim 8, characterized in that: The spinning plates (315) are arranged in a circular array with the axis of the spinning drive plate (309) as the center, the number of the sliding grooves is equal to that of the spinning plates (315), one side of the spinning plate (315) is an inclined surface, a lifting gear bar (308) is arranged in the column top cover (302), a plurality of locking grooves (381) are opened on the lifting gear bar (308), the locking tongues (313) are arranged in correspondence with the locking grooves (381), and the locking grooves (381) are arranged in a linear array.

10. The folding baby crib support according to claim 9, characterized in that: A rear cover plate (317) is provided on one side of the lifting plate (303), the locking tongue (313) is located between the rear cover plate (317) and the lifting plate (303), a torsion spring (312) is installed in the knob (305), and the torsion spring (312) is located between the knob (305) and the first railing sleeve (304); The locking tongue (313) and the squeezing plate (314) both penetrate the lifting plate (303) and can slide inside the lifting plate (303). The locking tongue (313) and the squeezing plate (314) are slidably matched. The knob (305) is matched with a safety button (306). The safety button (306) is snap-fitted with the knob (305). A first spring (361) is provided inside the safety button (306). A second railing sleeve (318) is rotatably mounted on the lifting plate (303).

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