CN219845780U - One-carrying and instant-folding game bed - Google Patents

Abstract

The utility model provides a play yard is folded promptly to one, including a plurality of grudging posts, multiunit side wall, the underframe, every group side wall includes two and encloses the pole, go up and enclose the lock, the underframe includes the center seat that is located the end middle part, multiunit sill bar group, thereby every group sill bar group rotates with center seat and corresponding grudging post to be connected and constitutes link mechanism respectively, in order to avoid receiving the extrusion that is close to each other and arouses the folding potential safety hazard of pair side wall unblock between the adjacent grudging post under the expansion position, play yard still includes and prevents that arbitrary two adjacent grudging posts are close to and arouse the folding locking of corresponding side wall alone under the expansion position and even allies oneself with the mechanism, the locking even allies oneself with the mechanism and includes a plurality of synchronous sliders that correspond to slide and set up on corresponding grudging post, a plurality of stay bars group that connect between corresponding enclosing pole and synchronous slider. The game bed can be folded once being carried and unfolded once being unfolded, and is locked and unlocked smoothly in the unfolding and folding processes, and the game bed is stable in unfolding, high in rigidity and safe and reliable to use under the stable effect of the locking allied mechanism under the unfolding position.

Description

One-carrying and instant-folding game bed

Technical Field

The utility model relates to a game bed capable of being folded once being carried.

Background

The game bed generally comprises four vertical frames, an upper frame rotationally connected with the upper ends of the four vertical frames, and a lower frame rotationally connected with the lower parts of the plurality of vertical frames, wherein the upper frame comprises four groups of side walls respectively arranged between every two adjacent vertical frames, each group of side walls comprises two rods, the outer ends of the rods are respectively rotationally connected with the adjacent vertical frames, the inner ends of the two rods are also rotationally connected, and a unidirectional folding locking mechanism is arranged between the two rods, so that when the game bed is unlocked, each unidirectional folding locking mechanism is required to be manually operated, after all the four unidirectional folding locking mechanisms are unlocked, the lower bottom frame is lifted up, and the folding effect is achieved, and the unlocking operation is troublesome, such as patent publication No. CN2751679Y, named as a foldable game surrounding frame.

With the updating of products on the market, a game bed which is more convenient to operate, simpler in mechanism principle, smaller in folding volume, lighter in weight, capable of being folded when being carried and unfolded when being carried and the like is pursued.

As shown in patent document of the authorized bulletin number CN111419039B, the portable child game bed is named, the scheme comprises bed legs and a folding driving device, a protection rod is respectively arranged at the top between two adjacent bed legs, two ends of the protection rod are respectively and movably connected with the tops of the corresponding bed legs, a connecting mechanism is arranged at the bottom of each bed leg, the connecting rod consists of an upper connecting rod and a lower connecting rod which are arranged up and down, the connecting mechanism comprises a base and a transmission mechanism, one end of the upper connecting rod is connected with the base, the other end of the upper connecting rod is connected with the rotation of a frame body, one end of the lower connecting rod is connected with the rotation of the base, the end of the lower connecting rod extending into the inner cavity of the lower part of the base is linked with the transmission mechanism, and the other end of the lower connecting rod is connected with the rotation of the frame body. The linkage of the guard bar and the folding driving device is realized through the stay cord and the connecting mechanism, so that the guard bar can also act along with the folding driving device when the folding driving device is pulled upwards and pushed downwards, and the folding and unfolding of the whole bed body can be realized only by applying force at one position of the folding driving device.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a game bed which is convenient to operate, can be folded when being carried and can be unfolded when being carried.

In order to solve the technical problems, the utility model adopts the following technical scheme: a portable instant folding game bed having an unfolding position and a folding position, comprising a plurality of vertical frames, a plurality of groups of side walls and a foldable lower frame connected between the lower end parts of the plurality of vertical frames, wherein each group of side walls are rotatably connected between the upper end parts of the adjacent two vertical frames, each group of side walls comprises two side wall rods and an upper side wall lock rotatably connected between one end parts of each side wall rod, the other end parts of each side wall rod and the upper end parts of the corresponding vertical frames are rotatably connected through an upper shaft, the lower frame comprises a center seat positioned at the bottom middle part and a plurality of groups of bottom rod groups, each group of bottom rod groups is rotatably connected with the center seat and the corresponding vertical frame respectively so as to form a connecting rod mechanism, when the game bed is in the unfolding position, the adjacent two vertical frames can keep relatively far away, if the game bed needs to be folded, the center seat is moved upwards to enable the plurality of vertical frames to be respectively close to the center seat, each adjacent two vertical frames can relatively close, each side wall is lost of tension for unfolding, and the upper side walls are relatively close, each side wall is enabled to be relatively close, so that the whole game bed is enabled to be folded, and the folding state is enabled to be unlocked; if the game bed needs to be unfolded, the center seat is pressed down to enable the plurality of stand frames to be respectively far away from the center seat, and meanwhile, every two adjacent stand frames can be relatively far away, so that the surrounding rod is pulled to unfold the side walls, the upper end parts of every two adjacent stand frames are far away from the limiting position to lock the upper surrounding lock, and the game bed is kept at the unfolding position; when the game bed is in the unfolding position, in order to avoid potential safety hazards of unlocking and folding of the pair of side walls caused by extrusion of mutual approaching between the upper ends of two adjacent vertical frames, the game bed further comprises a locking and connecting mechanism for preventing any two adjacent vertical frames from approaching independently and causing folding of the corresponding side walls under the unfolding position, the locking and connecting mechanism comprises a plurality of synchronous sliding pieces which are arranged on the corresponding vertical frames in a one-to-one corresponding manner, a plurality of supporting rod groups which are connected between the corresponding surrounding rods and the synchronous sliding pieces in a rotating manner respectively, each of the synchronous sliding pieces is connected with two supporting rod groups in a rotating manner, in the unfolding process of the game bed, the angle between each surrounding rod and the corresponding vertical frame is enlarged, the surrounding rods pull the synchronous sliding pieces upwards on the vertical rods through the two supporting rod groups, and the corresponding side walls are kept stable in the unfolding position of the game bed, at the moment, if the middle part of one side wall is stressed and the adjacent two vertical frame upper ends are relatively approaching each other, the synchronous sliding pieces on the corresponding vertical frames, the two corresponding surrounding rod groups are driven by the corresponding supporting rods, the two corresponding surrounding rods on the corresponding vertical frames can not move downwards, and the two surrounding rods can not be stably unfolded, and the corresponding surrounding rods can not be stably moved down, and the surrounding rods can not be stably moved down.

In some embodiments, each of the strut sets is a link, the upper end of the link is pivotally connected to the corresponding surrounding bar by an upper triaxial pivot, and the lower end is pivotally connected to the corresponding synchronizing slide by an upper tetraxial pivot.

In some embodiments, the upper enclosure lock comprises a lock frame member, wherein two side parts of the lock frame member are respectively and slidably arranged at one end part of the corresponding enclosure rod and are rotatably arranged around an upper two shafts, the upper enclosure lock further comprises a locking straight groove formed in one of the two enclosure rod and the lock frame member, a folding arc groove communicated with the locking straight groove, and a lock member fixed on the other one of the two enclosure rod and the locking straight groove, when the upper enclosure lock is in a locking position, the lock member is inserted into the locking straight groove, the length direction of the locking straight groove extends along the length direction of the enclosure rod, and when the upper enclosure lock is in an unlocking position, the lock member is inserted into the folding arc groove.

In some embodiments, when the upper peripheral lock is in the locking position, the upper triaxial, the upper biaxial and the locking piece are in the same horizontal line, and the central line of the locking straight slot is positioned on the horizontal line.

In some embodiments, the length center line of the locking straight groove extends along the radial direction of the upper biaxial axle center, and the length center line of the folding arc groove extends along the circumferential direction of the upper biaxial axle center.

In some embodiments, each stand comprises a bed top angle positioned at the upper part and a bed bottom foot positioned at the lower part, and further comprises an inner slide bar and an outer vertical bar which are fixedly connected between the bed top angle and the bed bottom foot, wherein the lengths of the inner slide bar and the outer vertical bar extend along the vertical direction respectively, the synchronous slide piece is arranged on the inner slide bar in a sliding manner, the outer vertical bar is blocked at the outer side of the inner slide bar, and two sides of the bed top angle are connected with the corresponding surrounding bars through the upper shaft pivot.

In some embodiments, each of the bottom bar sets includes a bottom bar having two ends pivotally connected between a center seat and a lower portion of the corresponding stand by a bottom first axis and a bottom second axis, a bottom outer bar below the bottom bar and a bottom inner bar having one end pivotally connected to one end of the bottom inner bar by a bottom third axis, the other end of the bottom inner bar is pivotally connected to the center seat by a bottom fourth axis, and the other end of the bottom outer bar is pivotally connected to a lower end of the corresponding stand by a bottom fifth axis.

In some embodiments, each of the bottom bar sets further comprises a bottom auxiliary link, an upper end of the bottom auxiliary link is pivotally connected to the bottom upper bar by a bottom six-axis pivot, and a lower end of the bottom auxiliary link is connected to the bottom three axes.

In some embodiments, a bed bottom lock is provided between the center seat and one end of all of the bottom rails to hold the lower frame stably in the deployed position.

The scope of the present utility model is not limited to the specific combination of the above technical features, but also covers other technical features formed by any combination of the above technical features or their equivalents. Such as those described above, and those disclosed in the present utility model (but not limited to) having similar functions, are replaced with each other.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the game bed mechanism has the advantages of simple principle, more convenient operation, realization of folding once one carrying, unfolding once one supporting, smooth locking and unlocking in the unfolding and folding processes, stable unfolding, high rigidity and safe and reliable use under the maintenance and stabilization effect of the locking and allied mechanism at the unfolding position.

Drawings

FIG. 1 is a perspective view of a play yard in a deployed position (lower frame embodiment one);

FIG. 2 is a schematic perspective view of the play yard in the process of being folded;

FIG. 3 is a section A-A of FIG. 1;

FIG. 4 is an enlarged view of the upper enclosure lock at M of FIG. 3 in the locked position;

FIG. 5 is a schematic view showing the state of the upper enclosure in the unlocking position during the unfolding or folding process of the game bed;

FIG. 6 is a schematic view of the play yard in the collapsed position with the upper enclosure locked in the unlocked position;

FIG. 7 is a schematic view of the play yard in a collapsed position;

FIG. 8 is a section B-B of FIG. 1;

FIG. 9 is an enlarged view at N of FIG. 8;

FIG. 10 is a schematic view of a second embodiment of the lower frame during deployment or folding;

wherein:

1. a vertical frame; 11. a bed apex angle; 12. an inner slide bar; 13. an outer upright; 14. a bed foot;

2. a side wall; 21. a surrounding rod; 211. a guide groove; 22. locking the upper enclosure; 22a, a lock frame member; 22b, locking straight grooves; 22c, folding arc grooves; 22d, locking piece; 22e, unlocking the elastic piece;

s1, a last shaft; s2, upper two shafts; s3, upper triaxial; s4, upper four shafts;

d1, a bottom shaft; d2, a bottom two-axis; d3, bottom triaxial; d4, a bottom four-axis; d5, bottom five axes; d6, six shafts at the bottom;

3. a lower frame; 31. a bottom upper rod; 32. a lower outer rod; 33. a lower inner rod; 34. a center seat;

35. a bed bottom lock; 35a, a lock cylinder cavity; 35b, a lock cylinder; 35c, a lock core elastic piece; 35d, cam lifting button; 36. a bottom auxiliary link;

4. locking the federation agency; 41. a synchronizing slide; 42. a brace rod group.

Detailed Description

The game bed, as shown in figure 1, comprises four vertical frames 1 respectively provided with bed top angles 11 and bed bottom feet 14, side walls 2 which are connected between the four bed top angles 11 and can be folded, a lower frame 3 which is connected between the four bed bottom feet 14 and can be folded, an upper surrounding lock 22 for locking the side walls 2 in an unfolding position, and a bed bottom lock 35 for locking the lower frame 3 in the unfolding position.

The portable and foldable game bed is shown in fig. 1-3, and the whole structure of the game bed is a bedstead, when in use, the bed pocket cloth cover is required to be sleeved, and the drawing is omitted.

The following describes the bed frame in detail.

As shown in fig. 1-3, each set of side walls 2 comprises two surrounding rods 21 and an upper surrounding lock 22 rotatably connected between one end parts of the two surrounding rods 21, and the other end part of each surrounding rod 21 is rotatably connected with the corresponding bed top angle 11 through the upper shaft S1, namely, each bed top angle 11 is provided with two upper shafts S1, and the two upper shafts are respectively connected with the end parts of one surrounding rod 21 of the adjacent side walls 2.

Each upper peripheral lock 22 is locked or unlocked by the distance between the upper ends of the adjacent two uprights 1, without manual individual manipulation.

As shown in fig. 4 to 6, the upper surrounding lock 22 includes a lock frame member 22a having both side portions slidably disposed on one end portion of the corresponding surrounding rod 21 and rotatably disposed around an upper two shaft S2, the surrounding rod 21 is provided with a guide groove having a length direction identical to the length direction of the surrounding rod 21, the upper two shaft S2 is fixed to the corresponding side portion of the lock frame member 22a, and the upper two shaft S2 is movably and rotatably inserted into the guide groove. The locking frame 22a is provided with a locking straight groove 22b and a folding arc groove 22c communicated with the locking straight groove 22b, and a locking member 22d, in this embodiment a locking pin, is fixed on one end of the enclosing rod 21, the length center line of the locking straight groove 22b extends along the radial direction of the axle center of the upper two shafts S2, and the length center line of the folding arc groove 22c extends along the circumferential direction of the axle center of the upper two shafts S2. When the upper peripheral lock 22 is in the locked position, the lock member 22d is inserted into the locking straight groove 22b, the upper triaxial S3, the upper biaxial S2 and the lock member 22d are in the same horizontal line, the center line of the locking straight groove 22b is located on the horizontal line, and the length direction of the locking straight groove 22b extends along the length direction of the peripheral rod 21. An unlocking elastic member 22e is further provided between each of the surrounding rods 21 and the upper two shafts S2 of the lock frame member 22a, so that the lock member 22d has a tendency to exit the locking straight groove 22b and enter the folding arc groove 22 c.

When the adjacent two uprights 1 are relatively close, the locking piece 22d is easily withdrawn from the locking straight groove 22b in the horizontal direction under the action of the unlocking elastic piece 22e, so as to enter the folding arc groove 22c, and unlock the upper enclosure lock 22.

When two adjacent vertical frames 1 are relatively unfolded and far away from each other to the limit position, two surrounding rods 21 of the side wall 2 are horizontally straightened, and the locking piece 22d overcomes the elastic force of the unlocking elastic piece 22e, is separated from the folding arc groove 22c and enters the locking straight groove 22b along the horizontal direction to lock the upper surrounding lock 22.

As shown in fig. 1, 2, 3 and 8, the lower frame 3 comprises a central seat 34 positioned at the bottom middle part, four groups of bottom rod groups, and each group of bottom rod groups is respectively and rotatably connected with the central seat 34 and the corresponding stand 1 to form a link mechanism, so that two adjacent stands 1 can keep vertical relative distance in the unfolded position of the game bed.

Each bottom rod group comprises a bottom upper rod 31, a bottom outer rod 32 and a bottom inner rod 33, wherein the two ends of the bottom upper rod 31 are pivotally connected between the lower part of the corresponding vertical frame 1 and the center seat 34 through a bottom first shaft D1 and a bottom second shaft D2, the bottom outer rod 32 is positioned below the bottom upper rod 31, one end of the bottom outer rod 32 is pivotally connected with one end of the bottom inner rod 33 through a bottom shaft D3, the other end of the bottom inner rod 33 is pivotally connected with the center seat 34 through a bottom four shaft D4, and the other end of the bottom outer rod 32 is pivotally connected with the lower end of the corresponding vertical frame 1 through a bottom five shaft D5.

As shown in fig. 10, the bottom rod group may also be added with a bottom auxiliary connecting rod 36, the upper end of the bottom auxiliary connecting rod 36 is pivotally connected with the bottom upper rod 31 through a bottom six-axis D6, the lower end of the bottom auxiliary connecting rod 36 is connected with the bottom three-axis D3, and the bottom auxiliary connecting rod 36 is shared to form two four-bar mechanisms.

When the game bed needs to be folded, the central seat 34 is lifted upwards, the plurality of vertical frames are driven by the bottom rod groups to be respectively close to the central seat, namely, every two adjacent vertical frames can be relatively close, each pair of side walls lose the tension for stretching the vertical frames, the two surrounding rods 21 of the pair of side walls are relatively close, the locking piece 22d is easily withdrawn from the locking straight groove 22b along the horizontal direction under the action of the unlocking elastic piece 22e, and enters the folding arc groove 22c to unlock the upper surrounding lock 22, so that each group of side walls are allowed to be folded downwards, and the game bed is allowed to be folded to a minimum volume state as shown in fig. 7.

In addition, other schemes may be used for the structure of the bottom bar assembly, such as a linkage structure in a portable child playard as disclosed in the grant publication CN 111419039B.

In order to avoid the potential safety hazard of unlocking the side wall 2 caused by the mutual approaching of two adjacent bed top angles 11 due to extrusion or the mutual approaching of the two adjacent bed top angles 11 caused by the downward pressure of the middle part of the side wall 2 when the game bed is in the unfolding position, the game bed also comprises a locking allier mechanism 4 for preventing the independent approaching of any two adjacent vertical frames 1 in the unfolding position and causing the folding trend of the corresponding side wall 2.

As shown in fig. 1 to 3, the locking link 4 includes four synchronizing sliders 41 slidably disposed on the corresponding upright 1 in a one-to-one correspondence, eight strut groups 42 rotatably connected between the corresponding surrounding rod 21 and the synchronizing sliders 41, and two strut groups 42 rotatably connected to each synchronizing slider 41. In this embodiment, each strut 42 is a single link, which has the simplest structure, and the upper end of the link is pivotally connected to the corresponding surrounding rod 21 through the upper three axes S3, and the lower end of the link is pivotally connected to the corresponding synchronous slider 41 through the upper four axes S4. Each synchronizing slide 41, the upright 1 and two adjacent surrounding rods 21, brace rod groups 42 form two symmetrical deformable triangle mechanisms. The stay group 42 may be constituted by a plurality of links, as long as the change in the angle of the surrounding rod 21 with respect to the stand 1 causes the synchronous slider 41 to slide on the stand 1.

Under the action of the locking alliance mechanism 4, only if all the vertical frames 1 are closed towards the center and all the adjacent vertical frames 1 are closed relatively, all the synchronous sliding pieces 41 can slide downwards along the corresponding vertical frames 1 respectively, so that folding is realized. When the two independent uprights 1 are subjected to the closed extrusion force, the synchronous sliding piece 41 on the corresponding upright 1 cannot move downwards due to the expansion and the restraint of other side walls, so that the two independent uprights 1 cannot be folded when being subjected to the closed extrusion force, and are stable in expansion and high in rigidity in the expansion position. However, when the central seat 34 is lifted upwards, all the adjacent vertical frames 1 are relatively close, the upper peripheral locks 22 are synchronously and easily unlocked respectively, all the side walls 2 are synchronously folded downwards, and all the synchronous sliding pieces 41 slide downwards along the corresponding vertical frames 1 respectively to realize folding.

Mounting of the synchronization slider 41:

each stand 1 further comprises an inner slide rod 12 and an outer upright rod 13 which are fixedly connected between the bed top angle 11 and the bed bottom 14 and extend along the up-down direction respectively, the synchronous slide piece 41 is arranged on the inner slide rod 12 in a sliding manner, and the outer upright rod 13 is blocked on the outer side of the inner slide rod 12. The outer elevation is simple and beautiful in appearance. The inner slide bar 12 and the outer upright 13 can be two bars or two parts on one bar.

A bed bottom lock 35 is provided between the center seat 34 and one end of all the bottom upper rods 31 to stably hold the lower frame 3 in the unfolded position. The bed bottom lock is in the prior art, as shown in fig. 1, 2, 8 and 9, the bed bottom lock 35 comprises a lock cylinder cavity 35a arranged in the middle of a center seat 34, a lock cylinder 35b arranged in the lock cylinder cavity 35a in a sliding manner along the up-down direction, a lock cylinder elastic piece 35c positioned in the lock cylinder cavity 35a and propped against the lower part of the lock cylinder 35b to enable the lock cylinder to move upwards, and a cam lifting button 35d connected to the upper part of the center seat 34 in a rotating manner through a lifting button shaft, wherein the cam lifting button 35d is provided with a convex contact and a flat contact which are distributed around the lifting button shaft at intervals of 90 degrees. When the game bed is in the unfolding position and the bed bottom lock 35 is locked, the flat contact is downwards opposite to the lock cylinder 35b under the action of the torsion spring, the lock cylinder 35b is sprung to be propped against the flat contact under the action of the lock cylinder elastic piece 35c, and the locking keys which are downwards extended on one end part of all the bottom upper rods 31 are respectively propped against the lock cylinder 35b, so that the lower frame 3 is locked. The cam lifting button 35d is lifted by overcoming the torsion spring, the lock core 35b is pressed down by the convex contact by overcoming the lock core elastic piece 35c, all locking keys are separated from the lock core 35b respectively, the lower frame 3 is unlocked, the cam lifting button 35d is lifted continuously, the lower frame 3 is folded upwards, all the vertical frames 1 are all closed towards the center, namely, the adjacent vertical frames 1 are relatively closed, the upper enclosure locks 22 on all the side walls 2 are synchronously unlocked, all the side walls 2 are naturally folded by being moved downwards by the upper enclosure locks 22, all the synchronous sliding pieces 41 lose the pulling force of the supporting groups 42 and also all slide downwards along the corresponding vertical frames 1, and the whole game bed is folded. The mechanism principle is simple, the operation is more convenient, the folding and unfolding can be realized, the opening can be realized, under the action of the locking alliance mechanism 4, the upper surrounding lock 22 with simple structure is allowed to be used, the locking and unlocking are smooth in the unfolding and folding processes, the state is stable in the unfolding position, the use is safe and reliable, the volume is smaller after the folding, the weight is lighter, and the cost is lower.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (9)

1. A portable folding game bed comprises an unfolding position and a folding position, and comprises a plurality of vertical frames (1), a plurality of groups of side walls (2) and a foldable lower frame (3) connected between the lower ends of the plurality of vertical frames (1),

each group of side walls (2) is rotationally connected between the upper ends of two adjacent vertical frames (1) and comprises two side wall rods (21) and an upper surrounding lock (22) rotationally connected between one ends of the surrounding rods (21) at two sides, the other end of each surrounding rod (21) is rotationally connected with the upper end of the corresponding vertical frame (1) through an upper shaft (S1),

the lower frame (3) comprises a center seat (34) positioned at the bottom middle part and a plurality of groups of bottom rod groups, wherein each group of bottom rod groups is respectively and rotatably connected with the center seat (34) and the corresponding vertical frame (1) to form a connecting rod mechanism, so that two adjacent vertical frames (1) can keep vertical relatively far away from each other when the game bed is in a unfolding position, and the lower frame is characterized in that:

the upper end parts of every two adjacent vertical frames (1) are far away from the upper end parts to the limit positions to lock the upper surrounding locks (22), the upper surrounding locks (22) are converted into an unlocking state from the locking state by relatively approaching between the upper end parts of every two adjacent vertical frames (1), the game bed further comprises a locking alliance mechanism (4) for preventing any two adjacent vertical frames (1) from approaching independently and causing the corresponding side wall (2) to fold in the unfolding position, the locking alliance mechanism (4) comprises a plurality of synchronous sliding pieces (41) which are respectively arranged on the corresponding vertical frames (1) in a one-to-one corresponding sliding manner, a plurality of supporting rod groups (42) which are respectively connected between the corresponding surrounding rods (21) and the synchronous sliding pieces (41) in a rotating manner, two supporting rod groups (42) are respectively connected on each synchronous sliding piece (41) in a rotating manner,

the upper surrounding lock (22) comprises lock frame pieces (22 a) which are respectively arranged at two sides of the upper surrounding lock (22) in a sliding way and around corresponding upper two shafts (S2), wherein one end of each surrounding rod (21) can slide, each upper surrounding lock (22) further comprises a locking straight groove (22 b) formed in one of the surrounding rods (21) and the lock frame pieces (22 a), and a locking piece (22 d) fixed on the other of the surrounding rods and the lock frame pieces (22 a), when the upper surrounding lock (22) is in a locking position, the locking piece (22 d) is inserted into the locking straight groove (22 b), and when the upper surrounding lock (22) is in an unlocking position, the locking piece (22 d) withdraws from the locking straight groove (22 b).

2. The portable and folding play yard of claim 1, wherein: each supporting rod group (42) is a connecting rod, the upper end part of the connecting rod is in pivot connection with the corresponding surrounding rod (21) through an upper triaxial (S3), and the lower end part of the connecting rod is in pivot connection with the corresponding synchronous slider (41) through an upper tetraxial (S4).

3. A portable and folding play yard as claimed in claim 2, wherein: the upper enclosure lock (22) further comprises a folding arc groove (22 c) communicated with the locking straight groove (22 b), the length direction of the locking straight groove (22 b) extends along the length direction of the enclosure rod (21), and when the upper enclosure lock (22) is in an unlocking position, the lock piece (22 d) is inserted into the folding arc groove (22 c).

4. A carry-on-fold play yard as claimed in claim 3, wherein: when the upper surrounding lock (22) is positioned at the locking position, the upper triaxial (S3), the upper biaxial (S2) and the locking piece (22 d) are positioned at the same horizontal line, and the central line of the locking straight slot (22 b) is positioned on the horizontal line.

5. A carry-on-fold play yard as claimed in claim 3, wherein: the length center line of the locking straight groove (22 b) extends along the radial direction of the axle center of the upper two shafts (S2), and the length center line of the folding arc groove (22 c) extends along the circumferential direction of the axle center of the upper two shafts (S2).

6. The portable and folding play yard of claim 1, wherein: every grudging post (1) is including being located bed apex angle (11) on upper portion, being located bed footing (14) of lower part, still include fixed connection bed apex angle (11) with length between bed footing (14) is along interior slide bar (12) and outer pole setting (13) that extend of upper and lower direction respectively, synchronous slider (41) slip sets up on interior slide bar (12), outer pole setting (13) keep off and establish the outside of interior slide bar (12), the both sides of bed apex angle (11) are respectively through last axle (S1) pivot connection is corresponding enclose pole (21).

7. The portable and folding play yard of claim 1, wherein: each bottom rod group comprises a bottom upper rod (31) with two ends pivotally connected between the lower part of the corresponding vertical frame (1) and the center seat (34) through a bottom first shaft (D1) and a bottom second shaft (D2), a bottom outer rod (32) and a bottom inner rod (33) which are positioned below the bottom upper rod (31), one end part of the bottom outer rod (32) is pivotally connected with one end part of the bottom inner rod (33) through a bottom triaxial (D3), the other end part of the bottom inner rod (33) is pivotally connected with the center seat (34) through a bottom tetraxial (D4), and the other end part of the bottom outer rod (32) is pivotally connected with the lower end part of the corresponding vertical frame (1) through a bottom pentaaxial (D5).

8. The portable and folding play yard of claim 7, wherein: each bottom rod group further comprises a bottom auxiliary connecting rod (36), the upper end part of the bottom auxiliary connecting rod (36) is in pivot connection with the bottom upper rod (31) through a bottom six-axis (D6), and the lower end part of the bottom auxiliary connecting rod (36) is connected to the bottom three-axis (D3).

9. The portable and folding play yard of claim 7, wherein: a bed bottom lock (35) for stably holding the lower frame (3) in the unfolded position is provided between the center seat (34) and one end of all the bottom upper rods (31).