Game bed capable of being unfolded more stably

Abstract

A game bed capable of being unfolded more stably comprises four supporting rod structures, two long folding surrounding rod structures, two short folding surrounding rod structures and a folding base, the long folding surrounding rod structures are arranged between the tops of the two left-right adjacent supporting rod structures, and the short folding surrounding rod structures are arranged between the tops of the two front-back adjacent supporting rod structures; the folding base comprises a base plate, a guide seat and four base plate pipes, a guide pipe is arranged at the bottom of the base plate, a guide sleeve is arranged at the top of the guide seat, the guide pipe penetrates through the guide sleeve and the guide seat and can ascend and descend along the guide sleeve, and each base plate pipe corresponds to one supporting rod structure. One end of each base plate pipe is hinged to the bottom of the supporting rod structure, the other end of each base plate pipe is hinged to the base plate, four first rod grooves are formed in the periphery of the guide seat, and each first rod groove corresponds to one base plate pipe. The first rod groove can play a role in guiding unfolding of the chassis pipe, so that the game bed is more stable when being unfolded.

Description

Technical Field

[0001] The invention relates to the field of children's products, in particular to a playbed that is more stably unfolded. Background Art

[0002] A children's playbed is mainly composed of a playbed frame and a cloth. The cloth forms a safe space for children to play in, which can prevent children from climbing out and falling. The existing baby bed frame is composed of four groups of support rod structures, four groups of folding surrounding rod structures and a folding base. The folding base of the existing baby bed frame includes a connecting seat, four bottom support rods with one end rotatably connected to the connecting seat, and the four bottom support rods are connected to the connecting seat to form an "X"-shaped structure; when the connecting seat is lifted upward, the four bottom support rods can be folded upward, and the playbed frame is in a shape of a small bottom and a large top when opened. When pressure is applied downward to the connecting seat, the playbed can be unfolded. However, during the unfolding process, the four groups of support rod structures often deviate, making the playbed frame unstable when unfolded. Summary of the invention

[0003] The present invention provides a playbed that can be unfolded more smoothly, and its main purpose is to overcome the problem that the four groups of support rod structures of the existing playbed often deviate when the playbed is unfolded.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A playbed that is more stable when unfolded, comprising four groups of support rod structures, two groups of long folding surrounding rod structures, two groups of short folding surrounding rod structures and a folding base, wherein the four groups of support rod structures are distributed at four corners, the two groups of long folding surrounding rod structures are symmetrically arranged front and back, and the two groups of short folding surrounding rod structures are symmetrically arranged left and right, the long folding surrounding rod structure is arranged between the tops of the two groups of support rod structures adjacent to each other on the left and right, and the short folding surrounding rod structure is arranged between the tops of the two groups of support rod structures adjacent to each other on the front and back; the folding base comprises a chassis, a guide seat and four chassis tubes, the bottom of the chassis is provided with a guide tube, the top of the guide seat is provided with a guide sleeve, and the guide tube passes through the guide sleeve. The guide sleeve and the guide seat can be lifted and lowered along the guide sleeve, each chassis tube corresponds to a group of support rod structures, one end of the chassis tube is hinged to the bottom of the support rod structure, and the other end of the chassis tube is hinged to the chassis, the outer periphery of the guide seat is provided with four first rod grooves, each first rod groove corresponds to a chassis tube, the four chassis tubes can be folded upward and unfolded downward as the chassis is lifted and lowered, and the four chassis tubes are located in the corresponding first rod grooves after being folded, the two groups of long folding surrounding rod structures and the two groups of short folding surrounding rod structures can be folded downward and unfolded upward as the chassis is lifted and lowered, and the four groups of support rod structures can move inward and unfold outward as the chassis is lifted and lowered.

[0005] Furthermore, the guide tube is provided with two first strip grooves arranged front and back, and two limit plates are arranged front and back in the guide tube, and the bottoms of the two limit plates are provided with "n"-shaped shaft grooves, and a hook is provided between the two limit plates, and the top left end of the hook is hinged to the guide tube, and the top right end of the hook is provided with a first pull rope groove, and the right end of the hook is provided with a spring that conflicts with it, and the bottom left end of the hook is provided with an inclined surface, and the guide sleeve is provided with a limit shaft rod, and the limit shaft rod passes through the two first strip grooves and the "n"-shaped shaft grooves of the two limit plates, and the hook hooks the limit shaft rod.

[0006] Furthermore, the top surface of the chassis is provided with a cover opening, the cover opening is provided with a chassis cover, the chassis cover is provided with a second pull rope groove running through from top to bottom, the right end of the hook is provided with a spring contact portion, and the spring is provided between the spring contact portion and the bottom surface of the chassis cover.

[0007] Furthermore, the folding base also includes two supporting foot rods that are symmetrical front and back, one end of the supporting foot rod is hinged to the chassis, and two second rod grooves are provided on the outer periphery of the guide seat, each second rod groove corresponds to a supporting foot rod, and the two supporting foot rods can be folded upward and unfolded downward as the chassis rises and falls, and the two supporting foot rods are located in the corresponding second rod grooves after being folded.

[0008] Furthermore, the lower periphery of the guide sleeve is provided with two hinged parts which are symmetrical front and back, the middle part of the hinged part is recessed inward, the left and right ends of the hinged part are provided with a first hinge port, and the folding base also includes four first linkage pieces, one end of the first linkage piece is hinged to the chassis tube, and the other end of the first linkage piece is hinged in the first hinge port.

[0009] Furthermore, the support rod structure includes a lower connecting member, a column and a fixed corner, the fixed corner is located above the lower connecting member, the column is connected between the lower connecting member and the fixed corner, the lower connecting member is provided with a second hinge port opening upward, one end of the chassis tube is hinged in the second hinge port, a roller is provided at the bottom of the lower connecting member, the fixed corner is provided with a third hinge port opening downward and a fourth hinge port opening downward, the third hinge port and the fourth hinge port are arranged at 90°, the end of the long folding enclosure structure is hinged in the third hinge port, and the end of the short folding enclosure structure is hinged in the fourth hinge port.

[0010] Furthermore, the long folding enclosure structure includes a first hinge joint, two first upper enclosures and two first lower enclosures, the two first upper enclosures are symmetrically arranged on the left and right, two inverted U-shaped guide pieces are hinged in the first hinge joint, one end of the first upper enclosure passes through the U-shaped guide piece, two groups of first guide grooves are provided on the first hinge joint, each group of first guide grooves corresponds to a first upper enclosure, each group of first guide grooves consists of two first guide grooves arranged front and back, each first guide groove includes a first inclined groove and a first clamping groove connected to the top of the first inclined groove, a first shaft rod is passed through each group of first guide grooves, the first shaft rod passes through the first upper enclosure, the first hinge joint is provided with a first supporting shaft rod for supporting the first upper enclosure, the first supporting shaft rod passes through the bottom of the U-shaped guide piece, the two first lower enclosures are symmetrically arranged on the left and right, one end of the first lower enclosure passes through a first pipe sleeve, the first hinge joint is passed through a second shaft rod, and the second shaft rod passes through the first pipe sleeve and one end of the first lower enclosure.

[0011] Furthermore, two second strip grooves arranged front and back are provided in the middle part of the first articulated joint, two groups of grooves arranged left and right are provided at the bottom of the first articulated joint, each group of grooves corresponds to a first lower enclosure rod, a third axis rod is provided at one end of the first lower enclosure rod, the third axis rod is located in the groove, a fourth axis rod is provided between the two second strip grooves, two second linkage plates are provided on one side of the first articulated joint, each second linkage plate corresponds to a first lower enclosure rod, the fourth axis rod passes through the tops of the two second linkage plates, and the third axis rod passes through the bottom of the corresponding second linkage plates.

[0012] Furthermore, the short folding enclosure structure includes a second hinge joint, two second upper enclosure rods and two second lower enclosure rods, the two second upper enclosure rods are symmetrically arranged front to back, two groups of second guide grooves are provided on the second hinge joint, each group of second guide grooves corresponds to a second upper enclosure rod, each group of second guide grooves is composed of two second guide grooves arranged left and right, each second guide groove includes a second inclined groove and a second clamping groove connected to the top of the second inclined groove, a fifth axis rod is passed through each group of second guide grooves, a pipe plug is provided at one end of the second upper enclosure rod, the fifth axis rod passes through the second upper enclosure rod and the pipe plug, the second hinge joint is provided with a second supporting axis rod for supporting the second upper enclosure rod, the two second lower enclosure rods are symmetrically arranged front to back, one end of the second lower enclosure rod passes through a second pipe sleeve, the second hinge joint is provided with a sixth axis rod, and the sixth axis rod passes through the second pipe sleeve and one end of the second lower enclosure rod.

[0013] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: when the playbed needs to be folded, the chassis is pulled upward, and the four chassis tubes can be folded upward as the chassis rises, the two groups of long folding surrounding rod structures and the two groups of short folding surrounding rod structures can be folded downward as the chassis rises, and the four groups of support rod structures can be moved inward as the chassis rises. After the four chassis tubes are folded, they are located in the corresponding first rod grooves, so that the four chassis tubes can be limited after being folded. When the playbed needs to be unfolded, the playbed is opened to a shape that is small at the bottom and large at the top, and then pressure is applied downward to the chassis, and the four chassis tubes can be unfolded downward as the chassis descends, and the two groups of long folding surrounding rod structures and the two groups of short folding surrounding rod structures can be unfolded upward as the chassis descends, and the four groups of supporting rod structures can be unfolded outward as the chassis descends. During the unfolding of the four chassis tubes, the first rod grooves can guide the unfolding of the chassis tubes, ensuring that the four chassis tubes and the four groups of supporting rod structures will not deviate during the unfolding process, making the playbed more stable when opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present invention.

[0015] Figure 2 It is a structural exploded view of the support rod structure of the present invention.

[0016] Figure 3 It is a structural diagram of the folding base of the present invention.

[0017] Figure 4 This is a structural exploded view of the folding base of the present invention.

[0018] Figure 5 It is a structural diagram of the chassis of the present invention.

[0019] Figure 6 It is a structural diagram of the long folding fence structure of the present invention.

[0020] Figure 7 It is a structural exploded view of the long folding fence structure of the present invention.

[0021] Figure 8 It is a structural diagram of the short folding fence structure of the present invention.

[0022] Fig. 9 It is a structural exploded view of the short folding fence structure of the present invention. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] Reference Figure 1 , Figure 3 and Figure 4 A playbed that can be unfolded more smoothly comprises four groups of support rod structures 1, two groups of long folding enclosure rod structures 2, two groups of short folding enclosure rod structures 3 and a folding base 4. The four groups of support rod structures 1 are distributed in four corners, the two groups of long folding enclosure rod structures 2 are symmetrically arranged front and back, and the two groups of short folding enclosure rod structures 3 are symmetrically arranged left and right. The long folding enclosure rod structure 2 is arranged between the tops of the two groups of support rod structures 1 adjacent to each other on the left and right, and the short folding enclosure rod structure 3 is arranged between the tops of the two groups of support rod structures 1 adjacent to each other on the front and back. The folding base 4 comprises a chassis 5, a guide seat 6 and four chassis tubes 7. The bottom of the chassis 5 is provided with a guide tube 51, and the top of the guide seat 6 is provided with a guide sleeve 61. The guide tube 51 passes through the guide sleeve 61 and the guide seat 6 and can be lifted and lowered along the guide sleeve 61. Each chassis tube 7 corresponds to a group of support rod structures 1, one end of the chassis tube 7 is hinged to the bottom of the support rod structure 1, and the other end of the chassis tube 7 is hinged to the chassis 5. The outer periphery of the guide seat 6 is provided with four first rod grooves 62, each first rod groove 62 corresponds to a chassis tube 7, the four chassis tubes 7 can be folded upward and unfolded downward as the chassis 5 rises and falls, and the four chassis tubes 7 are located in the corresponding first rod grooves 62 after being folded. The two groups of long folding surrounding rod structures 2 and the two groups of short folding surrounding rod structures 3 can be folded downward and unfolded upward as the chassis 5 rises and falls, and the four groups of supporting rod structures 1 can be moved inward and unfolded outward as the chassis 5 rises and falls.

[0025] Reference Figures 3 to 5The guide tube 51 is provided with two first strip grooves 52 arranged front and back, and two limit plates 53 arranged front and back are arranged in the guide tube 51. The bottoms of the two limit plates 53 are provided with "n"-shaped shaft grooves 54. A hook 55 is provided between the two limit plates 53. The top left end of the hook 55 is hinged to the guide tube 51. The top right end of the hook 55 is provided with a first pull rope groove 56. The right end of the hook 55 is provided with a spring 57 that conflicts with it, and the bottom left end of the hook 55 is provided with an inclined surface 58. The guide sleeve 61 is penetrated with a limit shaft rod 63, and the limit shaft rod 63 passes through the two first strip grooves 52 and the "n"-shaped shaft grooves 54 of the two limit plates 53. When the playbed is unfolded and used, the hook 55 hooks the limit shaft rod 63.

[0026] Reference Figure 3 and Figure 4 The top surface of the chassis 5 is provided with a cover 59, and the cover 59 is provided with a chassis cover 50. The chassis cover 50 is provided with a second rope-drawing groove 501 which passes through from top to bottom. The right end of the hook 55 is provided with a spring contact portion 551, and the spring 57 is provided between the spring contact portion 551 and the bottom surface of the chassis cover 50. The first rope-drawing groove 56 is tied with a rope 561, and the top of the rope 561 passes through the second rope-drawing groove 501. When the rope 561 is pulled upward, the hook 55 can rotate, so that the hook 55 is disengaged from the limiting shaft 63. At the same time, the chassis 5 is also pulled upward, and the guide tube 51 can move upward along the guide sleeve 61. The first strip groove 52 is used to limit the moving distance of the chassis 5.

[0027] Reference Figure 3 and Figure 4 The folding base 4 also includes two front-to-back symmetrical supporting foot rods 8, one end of which is hinged to the chassis 5. Two second rod grooves 64 are provided on the outer periphery of the guide seat 6, and each second rod groove 64 corresponds to a supporting foot rod 8. The two supporting foot rods 8 can be folded upward and unfolded downward as the chassis 5 rises and falls. After being folded, the two supporting foot rods 8 are located in the corresponding second rod grooves 64.

[0028] Reference Figure 3 and Figure 4 The lower periphery of the guide sleeve 61 is provided with two hinged parts 65 which are symmetrical in front and back, and the middle part of the hinged part 65 is recessed inwards to provide a space for the two supporting legs 8 to be folded. The left and right ends of the hinged part 65 are provided with first hinge ports 66. The folding base 4 also includes four first linkage pieces 9, one end of which is hinged to the chassis tube 7, and the other end of which is hinged in the first hinge port 66.

[0029] Reference Figure 3 and Figure 4When the pull rope 561 pulls the chassis 5 upward or presses the chassis 5 downward, the four chassis tubes 7 and the two supporting foot rods 8 fold upward and unfold downward as the chassis 5 rises and falls, and the four first linkage plates 9 provide directional effects for the corresponding chassis tubes 7 when folding and unfolding, ensuring that the chassis tubes 7 are located in the corresponding first rod grooves 62 after folding and that the chassis tubes 7 are unfolded along the first rod grooves 62 when unfolding.

[0030] Reference Figure 1 and Figure 2 The support rod structure 1 includes a lower connecting member 11, a column 12 and a fixed corner 13. The fixed corner 13 is located above the lower connecting member 11. The column 12 is connected between the lower connecting member 11 and the fixed corner 13. The lower connecting member 11 is provided with a second hinge 14 with an opening facing upward. One end of the chassis tube 7 is hinged in the second hinge 14. A roller 15 is provided at the bottom of the lower connecting member 11. The fixed corner 13 is provided with a third hinge 16 with an opening facing downward and a fourth hinge (not marked in the figure due to the view), and the third hinge 16 and the fourth hinge (not marked in the figure due to the view) are arranged at 90 degrees. The end of the long folding enclosure structure 2 is hinged in the third hinge 16, and the end of the short folding enclosure structure 3 is hinged in the fourth hinge (not marked in the figure due to the view).

[0031] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7The long folding enclosure rod structure 2 comprises a first hinge joint 21, two first upper enclosure rods 22 and two first lower enclosure rods 23. The two first upper enclosure rods 22 are arranged symmetrically. Two inverted U-shaped guide pieces 24 are hinged in the first hinge joint 21. One end of the first upper enclosure rod 22 passes through the U-shaped guide piece 24. Two groups of first guide grooves 25 are arranged on the first hinge joint 21. Each group of first guide grooves 25 corresponds to one first upper enclosure rod 22. Each group of first guide grooves 25 consists of two first guide grooves 25 arranged front and back. Each first guide groove 25 comprises a first inclined groove 251 and a first clamping groove 252 connected to the top of the first inclined groove 251. A first shaft rod 26 is passed through each group of first guide grooves 25. The first shaft rod 26 passes through the first upper enclosure rod 22. The first hinge joint 21 is provided with a first support shaft rod 27 for supporting the first upper enclosure rod 22. The first support shaft rod 27 passes through the bottom of the U-shaped guide piece 24. The two first lower enclosure rods 23 are symmetrically arranged, one end of the first lower enclosure rod 23 passes through a first sleeve 28, the first hinge joint 21 is penetrated by a second shaft rod 29, the second shaft rod 29 passes through the first sleeve 28 and one end of the first lower enclosure rod 23, and the first sleeve 28 is used to eliminate the gap between the first lower enclosure rod 23 and the inside of the first hinge joint 21. The other end of the first upper enclosure rod 22 and the other end of the first lower enclosure rod 23 are hinged in the third hinge port 16.

[0032] Reference Figure 6 and Figure 7 , two second strip grooves 211 arranged front and back are provided in the middle of the first articulated joint 21, two groups of grooves 212 arranged left and right are provided at the bottom of the first articulated joint 21, each group of grooves 212 corresponds to a first lower enclosure rod 23, a third shaft rod 231 is provided at one end of the first lower enclosure rod 23, and the third shaft rod 231 is located in the groove 212. A fourth shaft rod 213 is provided between the two second strip grooves 211, two second linkage pieces 214 are provided on one side of the first articulated joint 21, each second linkage piece 214 corresponds to a first lower enclosure rod 23, the fourth shaft rod 213 passes through the tops of the two second linkage pieces 214, and the third shaft rod 231 passes through the bottom of the corresponding second linkage piece 214.

[0033] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7When the playbed is unfolded, the first shaft rod 26 is located in the first slot 252, and the fourth shaft rod 213 is located at the top of the two second strip grooves 211. When the top of the column 12 expands outward, the first shaft rod 26 is separated from the first slot 252 and enters the first inclined slot 251 under the action of the outward pulling force, and the first upper enclosure rod 22 and the first lower enclosure rod 23 can be folded at this time. During the folding process of the first upper enclosure rod 22, the first shaft rod 26 slides from top to bottom along the first inclined slot 251. The two second linkage pieces 214 constitute a synchronization mechanism, so that the first upper enclosure rod 22 and the first lower enclosure rod 23 on the left side of the long folding enclosure rod structure 2 and the first upper enclosure rod 22 and the first lower enclosure rod 23 on the right side can be synchronized when folding and unfolding, so that the playbed is subjected to parallel forces when folding and opening, and will not tip to one side.

[0034] Reference Figure 1 , Figure 2 , Figure 8 and Fig. 9 The short folding enclosure rod structure 3 includes a second hinge joint 31, two second upper enclosure rods 32 and two second lower enclosure rods 33. The two second upper enclosure rods 32 are symmetrically arranged front and back. The second hinge joint 31 is provided with two groups of second guide grooves 34. Each group of second guide grooves 34 corresponds to one second upper enclosure rod 32. Each group of second guide grooves 34 is composed of two second guide grooves 34 arranged left and right. Each second guide groove 34 includes a second inclined groove 341 and a second clamping groove 342 connected to the top of the second inclined groove 341. A fifth shaft rod 35 is passed through each group of second guide grooves 34. A pipe plug 36 is provided in one end of the second upper enclosure rod 32. The fifth shaft rod 35 passes through the second upper enclosure rod 32 and the pipe plug 36. The second hinge joint 31 is provided with a second support shaft rod 37 for supporting the second upper enclosure rod 32. The two second lower enclosure rods 33 are symmetrically arranged front and back, one end of the second lower enclosure rod 33 passes through a second pipe sleeve 38, and the second hinge joint 31 is penetrated by a sixth shaft rod 39, which passes through one end of the second pipe sleeve 38 and one end of the second lower enclosure rod 33. The pipe plug 36 is used to strengthen the strength of one end of the second upper enclosure rod 32, and the second pipe sleeve 38 is used to eliminate the gap between the second lower enclosure rod 33 and the inside of the second hinge joint 31. The other end of the second upper enclosure rod 32 and the other end of the second lower enclosure rod 33 are hinged in a fourth hinge interface (not marked in the figure due to view reasons).

[0035] Reference Figure 1 , Figure 2 , Figure 8 and Fig. 9When the playbed is unfolded, the fifth shaft rod 35 is located in the second slot 342. When the top of the column 12 expands outward, the fifth shaft rod 35 is disengaged from the second slot 342 and enters the second inclined slot 341 under the action of the outward pulling force. At this time, the second upper enclosure rod 32 and the second lower enclosure rod 33 can be folded. During the folding process of the second upper enclosure rod 32, the fifth shaft rod 35 slides from top to bottom along the second inclined slot 341.

[0036] Reference Figures 6 to 9 , a first clearance space 231 is provided at one end of the first lower enclosure rod 23, a notch 321 is provided at one end of the second upper enclosure rod 32, the other end of the pipe plug 36 is located in the notch 321, a second clearance space 361 is provided at the other end of the pipe plug 36, and a third clearance space 331 is provided at one end of the second lower enclosure rod 33. The first clearance space 231, the second clearance space 361 and the third clearance space 331 respectively provide clearance for the first lower enclosure rod 23, the second upper enclosure rod 32 and the second lower enclosure rod 33 after folding, so that the first upper enclosure rod 22, the first lower enclosure rod 23, the second upper enclosure rod 32 and the second lower enclosure rod 33 can be more vertical after folding.

[0037] Reference Figures 1 to 9The design principle of the present invention is as follows: when the pull rope 561 is pulled upward, the hook 55 can rotate so that the hook 55 is disengaged from the limiting shaft rod 63. At the same time, the chassis 5 is also pulled upward, and the four chassis tubes 7 and the two supporting foot rods 8 are folded upward as the chassis 5 rises. In the process of the four chassis tubes 7 folding upward, the bottoms of the four columns 12 are moved inward and the tops are expanded outward. The tops of the four columns 12 are expanded outward to pull the first upper enclosure rod 22 and the second upper enclosure rod 32, so that the first shaft rod 26 is in contact with the first slot 2 52 disengages from and enters the first inclined groove 251, the fifth shaft rod 35 disengages from the second slot 342 and enters the second inclined groove 341. At this time, as the chassis 5 rises, the two groups of long folding surrounding rod structures 2 and the two groups of short folding surrounding rod structures 3 fold downward as the chassis 5 rises, and the four groups of supporting rod structures 1 move inward as the chassis 5 rises. After the four chassis tubes 7 are folded, they are located in the corresponding first rod grooves 62, and the two supporting foot rods 8 are located in the corresponding second rod grooves 64, so that the four chassis tubes 7 and the two supporting foot rods 8 can be limited after being folded. When the playbed needs to be unfolded, the playbed is opened to a shape with a small bottom and a large top, and then pressure is applied downward to the chassis 5, and the four chassis tubes 7 can be unfolded downward as the chassis 5 descends, and the two groups of long folding surrounding rod structures 2 and the two groups of short folding surrounding rod structures 3 can be unfolded upward as the chassis 5 descends, and the four groups of supporting rod structures 1 can be unfolded outward as the chassis 5 descends. During the unfolding process of the four chassis tubes 7 and the two supporting foot rods 8, the first rod groove 62 and the second rod groove 64 can respectively guide the unfolding of the corresponding chassis tubes 7 and the supporting foot rods 8. When the playbed is unfolded into place, when the hook 55 descends and the inclined surface 58 conflicts with the limiting shaft rod 63, the hook 55 hooks the limiting shaft rod 63 again.

[0038] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A playbed that can be unfolded more smoothly, characterized in that: The foldable base comprises four groups of support rod structures, two groups of long foldable surrounding rod structures, two groups of short foldable surrounding rod structures and a foldable base. The four groups of support rod structures are distributed in four corners. The two groups of long foldable surrounding rod structures are symmetrically arranged front to back, and the two groups of short foldable surrounding rod structures are symmetrically arranged left to right. The long foldable surrounding rod structure is arranged between the tops of the two groups of support rod structures adjacent to each other on the left and right, and the short foldable surrounding rod structure is arranged between the tops of the two groups of support rod structures adjacent to each other on the front and back. The foldable base comprises a chassis, a guide seat and four chassis tubes. The bottom of the chassis is provided with a guide tube, the top of the guide seat is provided with a guide sleeve, and the guide tube passes through the guide sleeve and the guide seat. And it can be lifted and lowered along the guide sleeve, each chassis tube corresponds to a group of support rod structures, one end of the chassis tube is hinged to the bottom of the support rod structure, and the other end of the chassis tube is hinged to the chassis. Four first rod grooves are provided on the outer periphery of the guide seat, and each first rod groove corresponds to a chassis tube. The four chassis tubes can be folded upward and unfolded downward as the chassis is lifted and lowered. After being folded, the four chassis tubes are located in the corresponding first rod grooves, the two groups of long folding surrounding rod structures and the two groups of short folding surrounding rod structures are folded downward and unfolded upward as the chassis is lifted and lowered, and the four groups of support rod structures can move inward and unfold outward as the chassis is lifted and lowered.

2. A more stable playbed as claimed in claim 1, characterized in that: The guide tube is provided with two first strip grooves arranged front and back, and two limit plates are arranged front and back in the guide tube, and the bottoms of the two limit plates are provided with "n"-shaped shaft grooves, and a hook is provided between the two limit plates. The top left end of the hook is hinged to the guide tube, and the top right end of the hook is provided with a first pull rope groove, and the right end of the hook is provided with a spring that conflicts with it, and the bottom left end of the hook is provided with an inclined surface, and the guide sleeve is provided with a limit shaft rod, and the limit shaft rod passes through the two first strip grooves and the "n"-shaped shaft grooves of the two limit plates, and the hook hooks the limit shaft rod.

3. A more stable playbed as claimed in claim 2, characterized in that: The top surface of the chassis is provided with a cover opening, the cover opening is provided with a chassis cover, the chassis cover is provided with a second pull rope groove running through from top to bottom, the right end of the hook is provided with a spring contact portion, and the spring is provided between the spring contact portion and the bottom surface of the chassis cover.

4. A more stable playbed as claimed in claim 1, characterized in that: The folding base also includes two front-to-back symmetrical supporting foot rods, one end of which is hinged to the chassis, and two second rod grooves are provided on the outer periphery of the guide seat, each second rod groove corresponds to a supporting foot rod, and the two supporting foot rods can be folded upward and unfolded downward as the chassis rises and falls, and the two supporting foot rods are located in the corresponding second rod grooves after being folded.

5. A more stable playbed as claimed in claim 4, characterized in that: The lower periphery of the guide sleeve is provided with two hinged parts which are symmetrical front and back, the middle part of the hinged part is recessed inward, the left and right ends of the hinged part are provided with a first hinge port, and the folding base also includes four first linkage pieces, one end of the first linkage piece is hinged to the chassis tube, and the other end of the first linkage piece is hinged in the first hinge port.

6. A more stable playbed as claimed in claim 1, characterized in that: The support rod structure includes a lower connecting member, a column and a fixed corner, the fixed corner is located above the lower connecting member, the column is connected between the lower connecting member and the fixed corner, the lower connecting member is provided with a second hinge port opening upward, one end of the chassis tube is hinged in the second hinge port, a roller is provided at the bottom of the lower connecting member, the fixed corner is provided with a third hinge port opening downward and a fourth hinge port opening downward, the third hinge port and the fourth hinge port are arranged at 90°, the end of the long folding enclosure structure is hinged in the third hinge port, and the end of the short folding enclosure structure is hinged in the fourth hinge port.

7. A more stable playbed as claimed in claim 1, characterized in that: The long folding enclosure structure includes a first hinge joint, two first upper enclosures and two first lower enclosures, the two first upper enclosures are symmetrically arranged on the left and right, two inverted U-shaped guide pieces are hinged in the first hinge joint, one end of the first upper enclosure passes through the U-shaped guide piece, two groups of first guide grooves are provided on the first hinge joint, each group of first guide grooves corresponds to a first upper enclosure, each group of first guide grooves is composed of two first guide grooves arranged front and back, each first guide groove includes a first inclined groove and a first clamping groove connected to the top of the first inclined groove, a first shaft rod is passed through each group of first guide grooves, the first shaft rod passes through the first upper enclosure, the first hinge joint is provided with a first supporting shaft rod for supporting the first upper enclosure, the first supporting shaft rod passes through the bottom of the U-shaped guide piece, the two first lower enclosures are symmetrically arranged on the left and right, one end of the first lower enclosure passes through a first pipe sleeve, the first hinge joint is provided with a second shaft rod, and the second shaft rod passes through the first pipe sleeve and one end of the first lower enclosure.

8. A more stable playbed as claimed in claim 7, characterized in that: Two second strip grooves arranged front and back are provided in the middle part of the first articulated joint, two groups of grooves arranged left and right are provided at the bottom of the first articulated joint, each group of grooves corresponds to a first lower enclosure rod, a third shaft rod is provided at one end of the first lower enclosure rod, the third shaft rod is located in the groove, a fourth shaft rod is provided between the two second strip grooves, two second linkage plates are provided on one side of the first articulated joint, each second linkage plate corresponds to a first lower enclosure rod, the fourth shaft rod passes through the tops of the two second linkage plates, and the third shaft rod passes through the bottom of the corresponding second linkage plates.

9. A more stable playbed as claimed in claim 1, characterized in that: The short folding enclosure structure includes a second hinge joint, two second upper enclosure rods and two second lower enclosure rods, the two second upper enclosure rods are symmetrically arranged front to back, two groups of second guide grooves are provided on the second hinge joint, each group of second guide grooves corresponds to a second upper enclosure rod, each group of second guide grooves is composed of two second guide grooves arranged left and right, each second guide groove includes a second inclined groove and a second clamping groove connected to the top of the second inclined groove, a fifth axis rod is passed through each group of second guide grooves, a pipe plug is provided at one end of the second upper enclosure rod, the fifth axis rod passes through the second upper enclosure rod and the pipe plug, the second hinge joint is provided with a second supporting axis rod for supporting the second upper enclosure rod, the two second lower enclosure rods are symmetrically arranged front to back, one end of the second lower enclosure rod passes through a second pipe sleeve, the second hinge joint is passed through a sixth axis rod, the sixth axis rod passes through the second pipe sleeve and one end of the second lower enclosure rod.

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