CN106037347B - Folding bed - Google Patents

Abstract

The invention discloses a folding bed, which comprises a bed frame with an unfolded state and a folded state, and a locking mechanism for locking the bed frame in the unfolded state, wherein the bed frame includes an upper frame assembly, a support frame assembly and a lower frame components. The number of rods of the folding bed is small, and it can be folded twice. After folding, all the rods can be tightly folded together. The folded structure is very compact and flat, and the space occupied is very small. Great convenience.

Description

Folding bed

technical field

The invention relates to a folding bed.

Background technique

In the prior art, a bed frame of a folding bed usually includes a bottom frame and a surrounding frame supported on the bottom frame, and the entire bed frame can be folded when the bottom frame and the frame are folded. However, the bed frame of the current folding bed often has a large volume after being folded, which is not conducive to carrying and using when traveling.

Contents of the invention

The object of the present invention is to provide a folding bed with very small volume after folding.

In order to achieve the above object, the technical solution adopted by the present invention is: a folding bed, including a bed frame with an unfolded state and a folded state, and a locking mechanism for locking the bed frame in the unfolded state, and the bed frame includes The upper frame assembly, the support frame assembly and the lower frame assembly,

The upper surround frame assembly includes a left upper surround frame, a right upper surround frame, and two connecting frames connected between the left upper surround frame and the right upper surround frame and located on the front and rear sides respectively. The two left upper surrounding rods on the side, the left upper side rod pivotally connected between the left ends of the two left upper surrounding rods, the right end of the left upper surrounding rod is pivotally connected to the left end of the connecting frame on the same side; The upper right surrounding frame includes two upper right surrounding rods located on the front and rear sides respectively, and a right upper side rod pivotally connected between the right ends of the two right upper surrounding rods, and the left end of the right upper surrounding rod is pivotally connected to the same side of the right upper surrounding rod. the right end of the connecting frame;

The support frame assembly includes a left support frame and a right support frame. The left support frame includes left support rods respectively located on the front and rear sides and extending in the up and down direction. The upper ends of the left support rods are pivotally connected to the same side At the left end of the connecting frame, a left connecting rod is pivotally connected between the left support rod and the left upper surrounding rod on the same side; Right strut, the upper end of the right strut is pivotally connected to the right end of the connecting frame on the same side, and a right connecting rod is also pivotally connected between the right strut and the right upper wall bar on the same side. rod;

The lower surround frame assembly includes a left lower surround frame and a right lower surround frame. The left lower surround frame includes two left lower surround rods respectively located on the front and rear sides, and a left lower side pivotally connected between the left ends of the two left lower surround rods. The left lower surrounding rod is pivotally connected to the left support rod on the same side; the right lower surrounding frame includes two right lower surrounding rods respectively located The right lower side rod between the right ends of the lower surrounding rods, the right lower surrounding rod is pivotally connected to the right support rod on the same side, and the right end of the left lower surrounding rod on the same side is connected to the right lower surrounding rod The left end of the phase rotation connection,

When the bed frame is folded, the left lower surrounding frame and the right lower surrounding frame are turned over and folded in the left and right direction and drive the left support frame and the right support frame to be folded in the left and right direction, and at the same time, the left upper surrounding frame is turned downward and After the left support frame is folded together, the right upper surrounding frame is turned down and folded together with the right support frame to realize a fold of the bed frame, the left upper surrounding bar, left support bar, The lower left side bar, the lower right side bar, the right strut bar, the upper right side bar and the connecting frame are turned over in the front and back directions together and gathered above the left upper side bar, the left lower side bar, the right lower side bar and the right upper side bar to realize Secondary folding of the bed frame.

Preferably, the left strut and the right strut can be arranged telescopically along their own length direction respectively, and a left cross bar is pivotally connected between the lower parts of the left strut on both sides, and the two sides of the left strut There is also a right cross bar pivotally connected between the lower parts of the right struts. After the bed frame is folded once, the left strut and the right strut shrink along their own lengths respectively, so that the left transverse bar After the rod is moved closer to the upper left surrounding rod and the lower left surrounding rod, and the right cross bar is moved closer to the upper right surrounding rod and the lower right surrounding rod, the left upper surrounding rod, left support rod and left lower surrounding rod on the front and rear sides The rod, the lower right surrounding rod, the right strut, the right upper surrounding rod and the connecting frame are turned over in the front and rear directions together to realize the secondary folding.

Further, the left brace includes a left upper brace, a left lower brace that can slide and expand relative to the left upper brace, and the left lower brace is pivotally connected to the left upper brace; the right brace includes a right upper brace A support rod, a right lower support rod that can slide and expand relative to the right upper support rod, and the right lower surrounding rod is pivotally connected to the right upper support rod.

Further, the left support frame also includes a left leg rod that is respectively rotatably connected to the lower end of the left support rod, and the right support frame also includes a right leg rod that is respectively rotatably connected to the lower end of the right support rod, so After the first folding of the bed frame and before the second folding, the two left outriggers are turned over and folded together with the left cross bar, and the two right outriggers are turned over and folded with the right side. The crossbars are folded together.

Preferably, the right end of the left upper wall bar and the upper end of the left brace are respectively pivotally connected to the connecting frame, and the left upper wall bar, the connecting frame, the left support rod, and the left tie rod on the same side form a A four-bar linkage mechanism; the left end of the right upper surrounding rod and the upper end of the right support rod are respectively pivotally connected to the connecting frame, and the right upper surrounding rod, connecting frame, right supporting rod and right tie rod on the same side Another four-bar linkage is formed between them.

Preferably, the connecting frame is a U-shaped bar with the opening facing downward, the right end of the left upper surrounding bar and the left end of the right upper surrounding bar are respectively inserted in the opening of the connecting frame and pivoted with the connecting frame shaft connection.

Preferably, the locking mechanism includes a locking piece arranged between the left lower surrounding bar and the right lower surrounding bar for locking the two, and there is a locking piece between the front and rear sides for locking the two The unlocking handle for simultaneous unlocking.

Preferably, when the bed frame undergoes the first folding, the ends connected to the left lower surrounding bar and the right lower surrounding bar move upward so that the left lower surrounding frame and the right lower surrounding frame are turned and folded relative to each other along the left and right direction.

Preferably, after the first folding of the bed frame and before the second folding, on the same side of the front and rear sides of the bed frame, the rotation axis of the upper left side bar relative to the upper left side bar line, the axis of rotation of the left support bar relative to the left cross bar, the axis of rotation of the left lower surrounding bar relative to the left lower side bar, the rotation axis of the right lower surrounding bar relative to the right lower side bar The axis of rotation, the axis of rotation of the right support bar relative to the right cross bar, and the axis of rotation of the upper right side bar relative to the upper right side bar extend colinearly.

Preferably, after the first folding of the bed frame and before the second folding, the upper left side bar, the lower left side bar, the lower right side bar, the upper right side bar, the left cross bar and the right cross bar Folding to the same height, on the same side of the front and rear sides of the bed frame, the rotation axis of the left upper surrounding rod relative to the left upper side rod, the rotation axis of the left support rod relative to the left cross bar, The rotation axis of the left lower surrounding rod relative to the left lower side rod, the rotation axis of the right lower surrounding rod relative to the right lower side rod, and the rotation axis of the right brace relative to the right cross bar The center line and the rotation axis of the upper right side bar relative to the upper right side bar extend parallel or co-linearly with each other.

Preferably, when the bed frame undergoes the secondary folding, the left upper surrounding bar, the left support bar, the left lower surrounding bar, the right lower surrounding bar, the right support bar, the right upper surrounding bar and the connecting frame jointly After flipping inward and gathering above the left upper side bar, left lower side bar, right lower side bar, right upper side bar, left cross bar and right cross bar, the left upper encirclement bar, left support bar, left lower encirclement bar, The right lower surrounding bar, the right support bar, the right upper surrounding bar and the connecting frame are turned inward together to be laminated.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the folding bed of the present invention has a small number of rods, and each rod can be tightly folded together after folding, and the folded structure is very compact. It is compact and flat, and takes up little space, which provides great convenience for users' daily storage and storage.

Description of drawings

Accompanying drawing 1 is the three-dimensional view under the expanded state of children's bed of the present invention;

Accompanying drawing 2 is the schematic diagram of the rotating shaft of each bar on the crib frame of the present invention;

Accompanying drawing 3 is the front view of the crib of the present invention under the expanded state;

Accompanying drawing 4 is the perspective view of the children's bed of the present invention after being folded once;

Accompanying drawing 5 is the left side view of the crib of the present invention after being folded once;

Accompanying drawing 6 is the left side view of the crib of the present invention after the left and right support frames are folded after one fold;

Accompanying drawing 7 is the perspective view of accompanying drawing 6;

Accompanying drawing 8 is the three-dimensional view of the crib of the present invention after being folded twice;

in:

1. Upper left frame; 11. Upper left rod; 12. Upper left side rod; 2. Upper right frame; 21. Upper right rod; 22. Upper right rod; 3. Connecting frame;

4, left support leg; 41, left support bar; 41a, left upper support bar; 41b, left lower support bar; 42, left cross bar; 43, left foot bar; 5, right support leg; 51, right support bar; 51a, Right upper strut; 51b, right lower strut; 52, right cross bar; 53, right leg bar;

6. Lower left frame; 61. Lower left rod; 62. Lower left side rod; 7. Lower right frame; 71. Lower right rod; 72. Lower right rod; 8. Left connecting rod; 9. Right connecting rod ; 10, locking parts.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to the folding bed shown in Figures 1 to 7, it includes a bed frame having an unfolded state and a folded state, a locking mechanism for locking the bed frame in the unfolded state, the bed frame includes a top frame assembly, supported on The support frame assembly and the lower enclosure assembly under the enclosure assembly.

1 to 3, the upper frame assembly includes a left upper frame 1, a right upper frame 2, and two connecting frames 3 connected between the left upper frame 1 and the right upper frame 2 and located on the front and rear sides respectively. The left upper surrounding frame 1 includes two left upper surrounding rods 11 respectively located on the front and rear sides, a left upper side rod 12 pivotally connected between the left ends of the two left upper surrounding rods 11 (rotation axes a1, a1'), and the right end of the left upper surrounding rod 11 The pivot is connected to the left end (rotating axis F, F') of the connecting frame 3 on the same side as the left upper surrounding bar 11; The right upper side bar 22 (rotating axis a2, a2') between the right ends of the right upper surrounding bar 21, the left end of the right upper surrounding bar 21 is pivotally connected to the right end (rotating axis I, I') of the connecting frame 3 on the same side of the right upper surrounding bar 21 . In this way, the upper left frame 1, the connecting frame 3 on the front side, the upper right frame 2, and the connecting frame 3 on the rear side are enclosed in a closed frame shape along the circumference.

Referring to FIGS. 1 to 3 , the support frame assembly includes a left support frame 4 and a right support frame 5 .

The left support frame 4 includes left struts 41 respectively located on the front and rear sides and extending in the up and down direction, and a left cross bar 42 pivotally connected between the left struts 41 on both sides, wherein the left strut 41 includes a left upper strut 41a, The left lower strut 41b is slidable and telescopic relative to the left upper strut 41a, and the left cross bar 42 is pivotally connected between the lower parts of the left lower strut 41b on both sides (rotation axes a5, a5'). The upper end of the left upper strut 41a is pivotally connected to the left end (rotation axis A, A') of the connecting frame 3 on the same side, and a left connecting rod 8 is also arranged between the left upper strut 41a and the left upper surrounding bar 11 on the same side. The upper end of the connecting rod 8 is pivotally connected to the left upper wall rod 11 (rotating axes G, G'), and the lower end of the left connecting rod 8 is pivotally connected to the left upper support rod 41a (rotating axes H, H'). Like this, on each side of bedstead front and rear side, form a four-bar linkage mechanism between the left upper surrounding bar 11, the left connecting rod 8, the left upper strut 41a, the connecting frame 3.

Similarly, the right support frame 5 includes right struts 51 respectively located on the front and rear sides and extending in the up and down direction, and right cross bars 52 pivotally connected between the right struts 51 on both sides, wherein the right strut 51 includes a right upper support The rod 51a, the right lower strut 51b that can slide and expand relative to the right upper strut 51a, and the right cross bar 52 are pivotally connected between the lower parts of the right lower strut 51b on both sides (rotation axes a6, a6'). The upper end of the right upper strut 51a is pivotally connected to the right end (rotation axis E, E') of the connecting frame 3 on the same side, and a right connecting rod 9 is also arranged between the right upper strut 51a and the right upper surrounding bar 21 on the same side. The upper end of the connecting rod 9 is pivotally connected to the right upper wall bar 21 (rotating axes J, J'), and the lower end of the right connecting rod 9 is pivotally connected to the right upper strut 51a (rotating axes J, J'). Like this, on each side of bedstead front and rear side, another four-bar linkage mechanism is formed between the upper right surrounding bar 21, the right connecting rod 9, the upper right strut 51a, and the connecting frame 3.

Referring to the drawings, the left support frame 4 also includes left leg rods 43 (rotating shafts L, L') respectively rotatably connected to the lower end of the left strut rod 41, and the left leg rods 43 on both sides can face each other along the vertical direction. Flip over and gather under the left cross bar 42; similarly, the right support frame 5 also includes right leg rods 53 (rotating shafts M, M') respectively rotatably connected to the lower end of the right strut rod 51, and the right leg rods 53 on both sides It can be reversed vertically and folded under the right cross bar 52 . When setting, it can be set as the following structure: the locking structure between the left lower strut 41b and the left upper strut 41a is unlocked during the process of flipping and folding the left leg bar 43 relative to the left cross bar 42, so that the left strut 41 can slide along the length direction Contraction: during the process of flipping and folding the right leg bar 53 relative to the right cross bar 52, the locking structure between the right lower strut 51b and the right upper strut 51a is unlocked so that the right strut 51 can slide and shrink along the length direction.

Referring to the drawings, the lower frame assembly includes a left lower frame 6 and a right lower frame 7 . The left lower surround frame 6 includes two left lower surround rods 61 respectively located on the front and rear sides, and a left lower side rod 62 (rotation axis a3, a3') pivotally connected between the left ends of the left lower surround rods 61 on both sides. The left lower surround rod 61 pivots It is connected to the lower part of the upper left support bar 41a on the same side (rotating shafts B, B'); the lower right surrounding frame 7 includes two right lower surrounding bars 71 respectively located on the front and rear sides, pivotally connected to the right lower surrounding bars on both sides The right lower side bar 72 between the right ends of 71 (rotating shafts a4, a4'), and the right lower surrounding bar 71 is pivotally connected to the lower part of the right upper strut 51a on the same side (rotating shafts D, D'). On the same side of the front and rear sides of the bed frame, the right end of the left lower surrounding bar 61 is rotatably connected with the left end of the right lower surrounding bar 71, so that the left lower surrounding frame 6 and the right lower surrounding frame 7 can be turned over in the left and right directions. The right end of the left lower surrounding bar 61 and the left end of the right lower surrounding bar 71 are pivotally connected through the rotating shafts C and C' respectively, so that the left lower surrounding frame 6 and the right lower surrounding frame 7 are surrounded by a closed frame shape along the circumference. .

In this embodiment, the locking mechanism includes a locking piece 10 arranged between the left lower surrounding bar 61 and the right lower surrounding bar 71 for locking the two. 10 An unlocking handle (not shown in the figure) for synchronous unlocking.

The connecting frame 3 is a U-shaped bar with the opening facing downwards. The right end of the left upper surrounding rod 11 and the left end of the right upper surrounding rod 21 are respectively inserted in the opening of the connecting frame 3 and pivotally connected with the connecting frame 3, so that the connecting frame 3 The opening can limit the relative upward turning of the left upper surrounding rod 11 and the right upper surrounding rod 21 .

Referring to Fig. 1 to Fig. 3, when the bed frame is in the unfolded state, the upper left frame 1 and the upper right frame 2 are respectively located on the left and right sides of the connecting frame 3 and the three are surrounded by a frame shape, and the left support frame 4 is on the left side. The strut 41 is deployed along the length direction, and the lower left leg rod 42 is supported below the left strut 41; The left connecting rod 8 is supported between the left upper surrounding frame 1 and the left support frame 4, the right connecting rod 9 is supported between the right upper surrounding frame 2 and the right supporting frame 5, and the left lower surrounding frame 6 and the right lower surrounding frame 7 are surrounded by It is in the shape of a frame and is locked between the left support frame 4 and the right support frame 5 through the locking piece 10 .

When the bed frame needs to be folded up, as shown in Figure 3, the operator first pulls the unlocking handle to unlock the locking parts 10 on both sides, and drives the end of the left lower surrounding bar 61 connected with the right lower surrounding bar 71 upward Movement, so that the left lower frame 6 and the right lower frame 7 are turned over in the left and right directions and gradually move closer. The surrounding frame 1 turns downwards relative to the connecting frame 3 and gradually draws in with the left supporting frame 4, the right lower surrounding frame 7 turns downwards relative to the connecting frame 3 and gradually draws in with the right supporting frame 5, and finally, the left upper surrounding frame 1 and the left supporting frame 4. The lower left frame 6, the lower right frame 7, the right support frame 5, and the upper right frame 2 are folded along the left and right directions, and are in the state shown in Figure 4, which is a fold of the bed frame. After this one-time folding, the bed frame stands on the ground by relying on the two left outriggers 43 and the two right outriggers 53, which meets the general folding requirements.

Next, referring to FIG. 5 , the left lower leg bars 43 on the front and rear sides are relatively turned over and folded under the left cross bar 42 , and the right lower leg bars 53 on the front and rear sides are relatively turned over and folded under the right cross bar 52 , and then Sliding and shrinking the left upper strut 41a and left lower strut 41b of the left strut 41 along the length direction, and sliding and shrinking the right upper strut 51a and right lower strut 51b of the right strut 51 along the length direction, as shown in Fig. 6 and Fig. 7 state, at this time, on each side of the front and rear sides of the bed frame, the rotation axis of the upper left side bar 11 relative to the left upper side bar 12, the rotation axis of the left strut 41 relative to the left cross bar 42, and the left lower side bar 61 are opposite. The axis of rotation of the lower left side bar 62, the axis of rotation of the lower right side bar 71 relative to the lower right side bar 72, the axis of rotation of the right strut 51 relative to the right cross bar 52, the upper right side bar 21 relative to the upper right side bar The axis of rotation of 22 extends collinearly, that is, the axis lines of the rotating shafts a1, a5, a3, a4, a6, and a2 extend collinearly, that is, the axis line QQ', and the rotating shafts a1', a5', a3', The axis lines of a4', a6' and a2' also extend collinearly, that is, the axis line PP'.

Of course, in other embodiments, before the bed frame is folded once and folded twice, if the upper left side bar 12, the lower left side bar 62, the lower right side bar 72, the upper right side bar 22, the left horizontal bar 42 and the right horizontal bar Rod 52 is folded to the same height position, and the shaft centers of rotating shafts a1, a5, a3, a4, a6, a2 can also be arranged parallel to each other, and the shafts of rotating shafts a1', a5', a3', a4', a6', a2' The heart lines can also be arranged parallel to each other.

Finally, connect the rod groups on the front and rear sides (connector 3, left upper rod 11, left strut 41, left connecting rod 8, left lower rod 61, right lower rod 71, right connecting rod 9, right strut 51) Respectively turn inwardly around the common axis line and with the bar group on the bottom side (left upper side bar 12, left lower side bar 62, right lower side bar 72, right upper side bar 22, left cross bar 42 and right cross bar 52 ) close together, this is the secondary folding of the bed frame. During the specific operation, the rod group on the front side can be turned inward around its common axis line QQ' to make it close to the top of the rod group on the bottom side, and then the rod group on the rear side can be rotated around its common axis The wire PP' is turned inward to stack over the front set of poles. Finally, the bed frame is folded as shown in Figure 8. All the rods are tightly folded together, the structure is very compact and flat, it is very convenient to pack and store, and it takes up very little space, which provides great convenience for users’ daily storage and storage. convenient.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (11)

1. A folding bed comprising a frame having an expanded state and a folded state, a locking mechanism for locking the frame in the expanded state, characterized in that: the bed frame comprises an upper enclosing frame component, a supporting frame component and a lower enclosing frame component,

the upper enclosing frame assembly comprises a left upper enclosing frame, a right upper enclosing frame and two connecting frames which are connected between the left upper enclosing frame and the right upper enclosing frame and are respectively positioned at the front side and the rear side, the left upper enclosing frame comprises two left upper enclosing rods respectively positioned at the front side and the rear side and a left upper side rod which is pivoted between the left ends of the two left upper enclosing rods, and the right end of the left upper enclosing rod is pivoted at the left end of the connecting frame at the same side of the left upper enclosing rod; the right upper enclosing frame comprises two right upper enclosing rods which are respectively positioned at the front side and the rear side, and a right upper side rod which is pivoted between the right ends of the two right upper enclosing rods, and the left end of the right upper enclosing rod is pivoted at the right end of the connecting frame which is at the same side with the right upper enclosing rod;

the supporting frame assembly comprises a left supporting frame and a right supporting frame, the left supporting frame comprises left supporting rods which are respectively positioned on the front side and the rear side and extend along the vertical direction, the upper end of each left supporting rod is pivotally connected to the left end of the connecting frame on the same side of the left supporting rod, and a left connecting rod is further pivotally connected between each left supporting rod and the upper left surrounding rod on the same side of the left supporting rod; the right supporting frame comprises right supporting rods which are respectively positioned at the front side and the rear side and extend along the up-down direction, the upper end of each right supporting rod is pivotally connected to the right end of the connecting frame at the same side of the right supporting rod, and a right connecting rod is also pivotally connected between the right supporting rod and the upper right surrounding rod at the same side of the right supporting rod;

the lower enclosing frame assembly comprises a left lower enclosing frame and a right lower enclosing frame, the left lower enclosing frame comprises two left lower enclosing rods which are respectively positioned at the front side and the rear side, and a left lower side rod which is pivoted between the left ends of the two left lower enclosing rods, and the left lower enclosing rods are pivoted on the left support rods which are positioned at the same side of the left lower enclosing rods; the right lower enclosing frame comprises two right lower enclosing rods which are respectively positioned at the front side and the rear side, and a right lower side rod which is pivoted between the right ends of the two right lower enclosing rods, the right lower enclosing rod is pivoted on the right supporting rod which is at the same side with the right lower enclosing rod, the right end of the left lower enclosing rod which is at the same side is rotationally connected with the left end of the right lower enclosing rod,

when the bedstead is folded, the left lower enclosing frame and the right lower enclosing frame are oppositely turned and folded along the left-right direction and drive the left support frame and the right support frame to be folded along the left-right direction, meanwhile, the left upper enclosing frame is turned downwards and is folded with the left support frame, the right upper enclosing frame is turned downwards and is folded with the right support frame, and after the bedstead is folded for one time, the left upper enclosing rod, the left supporting rod, the left lower enclosing rod, the right supporting rod, the right upper enclosing rod and the connecting frame on the front side and the rear side are jointly turned towards each other along the front-rear direction and are folded above the left upper side rod, the left lower side rod, the right lower side rod and the right upper side rod, so that the bedstead is folded for the second time.

2. The folding bed of claim 1, wherein: the utility model discloses a folding bed, including left vaulting pole, right vaulting pole, bedstead, self length direction, left side vaulting pole right vaulting pole can follow respectively and set up with stretching out and drawing back self length direction, both sides go back the pivotal connection have a left horizontal pole between the lower part of left vaulting pole, both sides go back the pivotal connection have a right horizontal pole between the lower part of right vaulting pole, the bedstead passes through once folding back, left side vaulting pole with right vaulting pole respectively along self length direction shrink and make left side horizontal pole with upper left surrounding bar and left side surrounding bar draw close together down right side horizontal pole with after upper right surrounding bar and right side surrounding bar draw together, both sides around upper left surrounding bar, left vaulting pole, left side surrounding bar, right side vaulting pole, upper right surrounding bar and link jointly follow the fore-and aft direction upset in opposite directions again and realize the secondary folding.

3. The folding bed of claim 2, wherein: the left supporting rod comprises an upper left supporting rod and a lower left supporting rod which can slide and stretch relative to the upper left supporting rod, and the lower left surrounding rod is connected to the upper left supporting rod through a pivot; the right supporting rod comprises an upper right supporting rod and a lower right supporting rod which can slide and stretch relative to the upper right supporting rod, and the lower right surrounding rod is connected to the upper right supporting rod through a pivot.

4. The folding bed of claim 2, wherein: the left support frame further comprises left leg rods which are respectively and rotatably connected to the lower end of the left support rod, the right support frame further comprises right leg rods which are respectively and rotatably connected to the lower end of the right support rod, the bed frame is folded for the first time and before the second time, the left leg rods are oppositely turned and then folded with the left cross rod, and the right leg rods are oppositely turned and then folded with the right cross rod.

5. The folding bed of claim 1, wherein: the right end of the left upper enclosing rod and the upper end of the left stay rod are respectively pivoted on the connecting frame, and a four-bar linkage is formed among the left upper enclosing rod, the connecting frame, the left stay rod and the left pull rod on the same side; the left end of the right upper surrounding rod and the upper end of the right stay rod are respectively pivoted on the connecting frame, and another four-bar linkage mechanism is formed among the right upper surrounding rod, the connecting frame, the right stay rod and the right pull rod on the same side.

6. The folding bed of claim 1, wherein: the connecting frame is a U-shaped rod with a downward opening, and the right end of the left upper enclosing rod and the left end of the right upper enclosing rod are respectively inserted into the opening of the connecting frame and are pivotally connected with the connecting frame.

7. The folding bed of claim 1, wherein: the locking mechanism comprises a locking piece which is arranged between the left lower enclosing rod and the right lower enclosing rod and used for locking the left lower enclosing rod and the right lower enclosing rod, and unlocking handles which are used for synchronously unlocking the left lower enclosing rod and the right lower enclosing rod are arranged between the locking piece on the front side and the rear side.

8. The folding bed according to any one of claims 1 to 7, wherein: when the bed frame is folded for one time, the end part of the left lower enclosing rod connected with the right lower enclosing rod moves upwards to enable the left lower enclosing frame and the right lower enclosing frame to be relatively turned and folded along the left-right direction.

9. The folding bed according to any one of claims 2 to 4, wherein: the bedstead is in through once folding back and through before the secondary folding, the bedstead front and back side with one on one side, the upper left side rail is relative the axis of rotation of upper left side bar, the left vaulting pole is relative the axis of rotation of left side horizontal pole, the left side rail is relative down the axis of rotation of left side rail, the right side rail is relative down the axis of rotation of right side rail, the right vaulting pole is relative the axis of rotation of right side horizontal pole, the upper right side rail is relative the axis of rotation collinear extension of the axis of rotation of right side bar.

10. The folding bed according to any one of claims 2 to 4, wherein: the bedstead is in after once folding and before the secondary folding, upper left side pole, lower left pole, lower right pole, upper right pole, left horizontal pole and right horizontal pole draw in to same height, the bedstead front and back side with one on one side, the upper left side surrounding rod is relative the axis of rotation of upper left pole, the left vaulting pole is relative the axis of rotation of left horizontal pole, the lower left pole is relative the axis of rotation of lower left pole, the lower right pole is relative the axis of rotation of lower right pole, the right vaulting pole is relative the axis of rotation of right horizontal pole, the upper right pole is relative the axis of rotation of upper right pole is parallel to each other or collinearly extends.

11. The folding bed according to any one of claims 1 to 7, wherein: the bedstead is in the warp during the secondary is folding, one side enclose pole, left vaulting pole, left lower enclosing pole, right vaulting pole, right upper enclosing pole and link are inwards overturned jointly and draw in to after upper left side pole, left lower pole, right lower pole and the upper right side pole top, the upper left enclosing pole, left vaulting pole, left lower enclosing pole, right vaulting pole, upper right enclosing pole and the link of opposite side overturn jointly inwards again and range upon range of.

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