CN110652138A - Folding bed - Google Patents

Abstract

The invention relates to a folding bed, which comprises a foldable bed frame and a locking mechanism for locking the bed frame in an unfolded state. The bed frame includes a plurality of vertical bars and a surrounding frame arranged on the upper part of the plurality of vertical bars, and the surrounding frame includes A pair of oppositely arranged surrounding rod assemblies that can be unfolded and folded, and a pair of oppositely arranged upper side rods, the surrounding rod assemblies are arranged between the pair of upper side rods, and the bed frame further comprises a The bottom frame that can be unfolded and folded, when folded, the bottom frame is folded in half along the extending direction of the surrounding rod assembly and extended upward, and a pair of surrounding rod components is folded in half along the extending direction of the upper side rod. After folding, a pair of upper The side rods are close to each other, the two sides of the corresponding pair of upper side rods of the bottom frame are close to each other, and a pair of surrounding rod assemblies are close to each other. The folding bed enables quick and easy flat folding with minimal bulk.

Description

a folding bed

technical field

The invention relates to the field of children's products, in particular to a folding bed.

Background technique

The existing folding bed either cannot be completely folded, or the folding process is complicated and the structure is complicated, which brings a lot of inconvenience to the user. For example, a portable bed disclosed in Chinese patent CN208582080U includes a surrounding frame and a bed foot, and the surrounding frame includes a relative setting. The fixed enclosing rod, the collapsing enclosing rod which are arranged oppositely and can be unfolded and folded, the bed top angle connecting the adjacent fixed enclosing rod and the collapsible enclosing rod, the two ends of the fixed enclosing rod are fixedly connected with the top corner of the bed, Both ends of the folding rod are rotatably connected with the top corner of the bed, and the foot of the bed is rotatably connected to the top corner of the bed. The portable bed also includes a linkage assembly, and the linkage assembly includes a sliding sleeve, a first link and a second link. The sliding sleeve is slidably sleeved on the fixed surrounding rod, the two ends of the first connecting rod are respectively connected with the retracting surrounding rod and the sliding sleeve in rotation, and the two ends of the second connecting rod are respectively connected with the sliding sleeve and the bed foot in rotation. When the surrounding rod is folded and folded, the first connecting rod drives the sliding sleeve to slide on the fixed surrounding rod, and the sliding sleeve drives the bed foot to rotate through the second connecting rod and move toward the fixed surrounding rod. The portable bed has a complicated structure, and the folding operation is laborious and inconvenient.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved folding bed.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A folding bed, comprising a foldable bed frame and a locking mechanism for locking the bed frame in an unfolded state, the bed frame comprising a plurality of uprights and a surrounding frame arranged on the upper parts of the plurality of uprights, The enclosing frame includes a pair of oppositely arranged enclosing rod assemblies that can be unfolded and folded, and a pair of oppositely disposed upper side rods, the enclosing rod assemblies are arranged between the pair of the upper side rods, and the bed The frame also includes a base frame that can be unfolded and folded and is arranged at the lower part of the plurality of the vertical rods. When folded, the base frame is folded in half along the extending direction of the surrounding rod assemblies and extends upward, and a pair of the surrounding rod assemblies They are folded in opposite directions along the extending direction of the upper side bar.

According to some implementation aspects of the present invention, the bottom frame includes a pair of oppositely disposed bottom brace rod assemblies that can be unfolded and folded, the bottom brace rod assemblies folded upward in a direction along which the surrounding rod assemblies extend, and A connecting rod for rotatably connecting the pair of bottom support rod assemblies is provided at the double fold.

According to some implementation aspects of the present invention, the bottom frame includes a pair of lower side bars disposed opposite and corresponding to the upper side bars, and a pair of bottom support bar assemblies oppositely disposed and capable of being unfolded and folded, the The two ends of the bottom support rod assembly are respectively connected with a pair of the lower side rods, and the two ends of the lower side rods are respectively connected with two adjacent vertical rods in relative rotation; The two ends are respectively connected with the two adjacent vertical rods in rotation, and the two ends of the lower side rods are respectively connected with the two adjacent vertical rods or the lower side rods are connected with a pair of the bottom supports. Between the rod assemblies, each of the bottom support rod assemblies is folded in half along the extending direction of the surrounding rod assembly and extends upward. After folding, a pair of the lower side rods are close to each other.

According to some implementation aspects of the present invention, the chassis further includes a connecting rod connected between a pair of the bottom support rod assemblies, the bottom support rod assemblies including a first bottom support rod and a second bottom support rod, wherein One end of the first bottom support rod and the second bottom support rod are respectively connected with the connecting rod for relative rotation, and the other ends of the first bottom support rod and the second bottom support rod are respectively connected with a pair of the lower side rods. The two ends of the lower side rod are respectively connected with the two adjacent vertical rods in relative rotation.

According to some implementation aspects of the present invention, the enclosure rod assembly includes a first enclosure rod and a second enclosure rod, and one ends of the first enclosure rod and the second enclosure rod are rotatably connected with each other. The other ends of the surrounding rods are respectively rotatably connected with the upper parts of the two adjacent vertical rods. After being folded, the first surrounding rod and the second surrounding rod of each surrounding rod assembly are close to each other.

According to some implementation aspects of the present invention, the first surrounding rod, the second surrounding rod of one of the surrounding rod assemblies in the pair of the surrounding rod assemblies and the rotation axis lines of the two adjacent vertical rods rotate along the upper and lower sides, respectively. The first and second surrounding rods of another surrounding rod assembly and the axis of rotation of the two adjacent vertical rods extend vertically along the up and down direction. After folding, a pair of said surrounding rods The first and second surrounding rods of one of the surrounding rod assemblies are located above the first and second surrounding rods of the other surrounding rod assembly.

According to some embodiments of the present invention, both ends of the upper side rod are respectively connected with two adjacent vertical rods, and the upper side rod and the first surrounding rod are respectively connected to the upper part of each of the vertical rods Or upper side bar and second fence bar.

According to some implementation aspects of the present invention, the locking mechanism is provided between the first and second surrounding rods of the same surrounding rod assembly, and is used to lock the two in the deployed state.

According to some embodiments of the present invention, the locking mechanism includes a first rotating member that is rotatably sleeved on one of the first and second surrounding rods, and a first rotating member that is rotatably sleeved on the first surrounding rod, The second rotating member on the other part of the second surrounding rod, the first rotating member and the second rotating member are connected to each other through a rotating shaft. When the folding bed is in the unfolded state, the axis of the rotating shaft The center line extends in the horizontal direction, and when the folding bed is in the folded state, the axis line of the rotating shaft extends in the up-down direction.

According to some embodiments of the present invention, the bed frame further comprises an unlocking unit for unlocking the locking mechanism, the unlocking unit comprising sliding along a length direction of one of the first and second surrounding bars A sliding piece arranged on this part, a locking pin fixedly arranged with the sliding piece, and a card slot opened on the locking mechanism that can be locked or separated with the locking pin. The slot is matched and locked, and the first rotating member and the second rotating member are relatively fixed with the first surrounding rod and the second surrounding rod respectively; when the lock pin is separated from the slot, the first rotating member and the second The two rotating members are respectively rotatable relative to the first surrounding rod and the second surrounding rod, and the unlocking unit further includes a lock pin disposed between the one member and the sliding member and used to align the lock pin with the The card slot is matched with the locking elastic piece.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

In the folding bed of the present invention, when folded, the bottom frame is folded in half along the extending direction of the surrounding rod assembly and extends upward, and the pair of surrounding rod components is folded in opposite directions along the extending direction of the upper side rod. The rods are close to each other, the two sides of the corresponding pair of upper side rods of the bottom frame are close to each other, and the pair of surrounding rod assemblies are close to each other. The folding bed can realize fast and convenient flat folding and minimize the volume.

Description of drawings

1 is a schematic structural diagram of a folding bed in an unfolded state according to an embodiment of the present invention (the locking mechanism is in a locked state);

2 is a schematic structural diagram of a folding bed in an unfolded state according to an embodiment of the present invention (the locking pin of the unlocking unit is separated from the card slot);

Fig. 3 is a schematic diagram of enlarged structure at place A in Fig. 2;

4 is a schematic structural diagram of a folding bed in a semi-folded state according to an embodiment of the present invention;

5 is a schematic front view of the folding bed in a fully folded state according to an embodiment of the present invention;

6 is a schematic three-dimensional structure diagram of a folding bed in a fully folded state according to an embodiment of the present invention;

7 is an exploded schematic view of a folding bed according to an embodiment of the present invention;

Fig. 8 is the enlarged structural schematic diagram at B in Fig. 7;

Fig. 9 is a schematic diagram of enlarged structure at C in Fig. 7;

1. Enclosure rod assembly; 101, First enclosure pole; 102, Second enclosure pole; 2, Upright pole; 3, Upper side pole; 4, Lower side pole; 5, Bottom support pole assembly; 501, First Bottom support rod; 502, second bottom support rod; 6, connecting rod; 7, locking mechanism; 701, first rotating part; 702, second rotating part; 703, rotating shaft; 8, sliding part; 9, locking pin; 10, card slot; 11, first connector; 12, second connector; 13, third connector; 14, fourth connector; 15, fifth connector; 16, waist groove; 17, elastic part .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments of the description:

As shown in FIGS. 1 to 9 , a folding bed according to an embodiment of the present invention includes a foldable bed frame and a locking mechanism 7 for locking the bed frame in an unfolded state.

The bed frame includes a plurality of vertical poles 2 and a surrounding frame arranged on the upper part of the plurality of vertical poles 2 . Each of the vertical rods 2 extends in the up-down direction, respectively.

The surrounding frame includes a pair of oppositely arranged and unfoldable and foldable surrounding rod assemblies 1 and a pair of oppositely arranged upper side rods 3, the surrounding rod assembly 1 is arranged between the pair of upper side rods 3, and the bed frame is unfolded. In the state, the surrounding rod assembly 1 is perpendicular to the upper side rod 3 .

The bed frame also includes a base frame that can be unfolded and folded and is disposed at the lower part of the plurality of vertical rods 2. When folded, the base frame is folded in half along the extension direction of the surrounding rod assembly 1 and extends upward, and each surrounding rod assembly 1 is along the upper side. The side rods 3 are folded opposite each other in the extending direction. After folding, a pair of upper side rods 3 are close to each other, the two sides of the corresponding pair of upper side rods 3 of the bottom frame are close to each other, and a pair of surrounding rod assemblies 1 are close to each other.

In this example, the upper side rod 3 is an arc rod.

The bottom frame includes a pair of lower side rods 4 arranged opposite and corresponding to the upper side rods 3 and a pair of bottom support rod assemblies 5 arranged opposite to each other and can be unfolded and folded. For the connection of the lower side rod 4, the two ends of the lower side rod 4 are respectively connected with the two adjacent vertical rods 2 in relative rotation; Both ends of the lower side bar 4 are respectively connected with two adjacent vertical bars 2 or the lower side bar 4 is connected between a pair of bottom support rod assemblies 5, and each bottom support rod assembly 5 extends along the surrounding rod assembly 1. The direction is folded in half and extends upward. After folding, a pair of lower side bars 4 are close to each other.

In this example, the two ends of the bottom support rod assembly 5 are respectively connected with a pair of lower side rods 4 , and the two ends of the lower side rods 4 are respectively connected with two adjacent vertical rods 2 in relative rotation.

The bottom frame further includes a connecting rod 6 connected between a pair of bottom support rod assemblies 5. The bottom support rod assembly 5 includes a first bottom support rod 501, a second bottom support rod 502, a first bottom support rod 501, a second bottom support rod One end of the support rod 502 is respectively connected to the connecting rod 6 for relative rotation, and the other ends of the first bottom support rod 501 and the second bottom support rod 502 are respectively fixedly connected with a pair of lower side rods 4 .

In this example, as shown in FIGS. 7 and 9 , the first connecting member 11 is respectively provided between the first bottom support rod 501 , the second bottom support rod 502 and the connecting rod 6 , and the first connecting member 11 has a connection with the first bottom support rod 501 respectively. The support rod 501 and the second bottom support rod 502 are fixedly connected to the fixed part. The fixed part of the first connecting member 11 is fixedly connected to the first bottom support rod 501 and the second bottom support rod 502 respectively. The first connecting member 11 also has a rotating The rotating part sleeved on the connecting rod 6, the rotating part of the first connecting piece 11 is also fixedly provided with a plug inserted on the connecting rod 6, and the position corresponding to the plug pin on the connecting rod 6 is provided with a plug extending along the circumferential direction of the connecting rod 6. In the waist-shaped groove 16, the pin is inserted into the waist-shaped groove 16 and slides along its length direction in the waist-shaped groove 16, and the central angle of the waist-shaped groove 16 is 90°.

In this example, second connecting pieces 12 are respectively provided between the two ends of the lower side rod 4 and the two adjacent vertical rods 2 . 12 also has a sleeve part sleeved on the end of the lower side rod 4, the end part of the lower side rod 4 is rotated and inserted in the sleeve part of the second connecting piece 12, and the sleeve part of the second connecting piece 12 is on the sleeve part. A pin inserted on the lower side bar 4 is fixedly provided, and a waist-shaped groove along the circumferential direction of the rotation axis line of the lower side bar 4 is provided at the position corresponding to the pin on the lower side bar 4, and the pin is inserted in the waist-shaped groove. It slides in the groove and along its length in the waist-shaped groove, and the central angle of the waist-shaped groove is 90º.

The enclosure rod assembly 1 includes a first enclosure rod 101 and a second enclosure rod 102. One ends of the first enclosure rod 101 and the second enclosure rod 102 are connected in relative rotation, and the other ends of the first enclosure rod 101 and the second enclosure rod 102 are respectively connected. It is relatively rotatably connected with the upper parts of the two adjacent vertical rods 2, and after folding, the first surrounding rod 101 and the second surrounding rod 102 of each surrounding rod assembly 1 are close to each other.

The first surrounding rod 101, the second surrounding rod 102 and the rotation axis lines of the two adjacent vertical rods 2 in one of the surrounding rod assemblies 1 extend obliquely in the up and down direction respectively, and the other surrounding rod The first surrounding rod 101, the second surrounding rod 102 of the assembly and the rotation axes of the two adjacent vertical rods 2 respectively extend in the up and down direction. After folding, one of the surrounding rod assemblies in the pair of surrounding rod assemblies The first surrounding rod 101 and the second surrounding rod 102 are located above the first surrounding rod 101 and the second surrounding rod 102 of the other surrounding rod assembly. In this way, when the pair of surrounding rod assemblies 1 are folded toward each other, they can be folded in different layers, as shown in FIGS. 5 and 6 , so as to minimize the folded volume.

Both ends of the upper side bar 3 are fixedly connected with two adjacent vertical bars 2 respectively, and the upper part of each vertical bar 2 is respectively connected with the upper side bar 3 and the first surrounding bar 101, or the upper side bar 3 and the second Around the pole 102 .

Specifically, the third connecting piece 13 is fixedly connected to the upper part of the vertical rod 2; The end of the enclosure rod 101 or the second enclosure rod 102 is fixedly connected to a fixed part and a rotating part that is rotatably sleeved on other components;

The fifth connecting piece 15 is fixedly arranged with the upper end of the vertical rod 2 . The fourth connecting piece 14 is located between the third connecting piece 13 and the fifth connecting piece 15 .

The third connecting piece 13 on the two adjacent vertical rods 2 that are rotatably connected with the first surrounding rod 101 and the second surrounding rod 102 of one of the surrounding rod assemblies 1 has a fixed connection with the vertical rod 2 . The fixed part and the rotating shaft part fixedly arranged with the fixed part, the center line of the rotating shaft part extends obliquely in the up-down direction, and the fourth connecting piece on the first surrounding rod 101 and the second surrounding rod 102 of one of the surrounding rod components The rotating part of 14 is rotatably sleeved on the rotating shaft part of the third connecting piece 13 , and the axis line of the fourth connecting piece 14 is inclined when the fourth connecting piece 14 rotates along the rotating shaft part. The third connecting member 13 on the two adjacent vertical rods 2 that are rotatably connected with the first surrounding rod 101 and the second surrounding rod 102 of the other surrounding rod assembly in the pair of surrounding rod assemblies 1 is not provided with a rotating shaft portion. The sleeve parts of the fourth connecting member 14 on the first surrounding rod 101 and the second surrounding rod 102 of the other surrounding rod assembly are directly rotated and sleeved on the vertical rod 2 . The arrangement is such that when the oppositely arranged pair of surrounding rod assemblies 1 are folded inwardly towards each other, the first surrounding rod 101 and the second surrounding rod 102 of one surrounding rod assembly and the first surrounding rod 101 and the second surrounding rod 101 of the other surrounding rod assembly The height difference is formed in the upper and lower directions of the perimeter bar 102, which can be folded in staggered layers to minimize the volume after folding, as shown in FIGS. 5 and 6 .

Specifically, there are four vertical rods 2 , four third connecting pieces 13 , two surrounding rod assemblies 1 , and two upper side rods 3 .

The locking mechanism 7 is provided between the first shroud 101 and the second shroud 102 of the same shroud assembly, and is used to lock the two in the deployed state.

In this example, the locking mechanism 7 includes a first rotating member 701, one end of which is rotatably sleeved on the first surrounding rod 101, and a second rotating member 702, one end of which is rotatably sleeved on the second surrounding rod 102. The first rotating member 701, The other end of the second rotating member 702 is rotatably connected to each other through the rotating shaft 703. When the folding bed is in the unfolded state, the axis line of the rotating shaft 703 extends in the horizontal direction; when the folding bed is in the folded state, the axis line of the rotating shaft 703 is up and down. direction extension.

Specifically, the first rotating member 701 is also fixedly provided with a plug inserted through the first surrounding rod 101 , and the position corresponding to the plug on the first surrounding rod 101 is opened along the circumferential direction of the rotation axis of the first rotating member 701 The waist-shaped groove 16, the pin is inserted in the waist-shaped groove 16 and slides along its length direction in the waist-shaped groove 16, and the central angle of the waist-shaped groove 16 is 90°, as shown in Figures 7 and 8; the second rotating part 702 is fixedly provided with a pin inserted on the second surrounding rod 102, the position corresponding to the pin on the second surrounding rod 102 is provided with a waist-shaped groove along the circumferential direction of the rotation axis of the second rotating member 702, and the pin is inserted Slide in and along the length of the waist-shaped groove, the central angle of the waist-shaped groove is 90º.

In this example, the bed frame further includes an unlocking unit for unlocking the locking mechanism 7 . The unlocking unit is arranged on the first enclosure rod 101 .

Specifically, the unlocking unit includes a sliding member 8 that is slidably arranged on the first surrounding rod 101 along the length direction of the first surrounding rod 101 , a locking pin 9 that is fixedly arranged with the sliding member 8 , and a first rotating member that is provided on the locking mechanism 7 . The card slot 10 on the 701 can be locked or separated with the lock pin 9. When the lock pin 9 is locked with the card slot 10, the first rotating member 701 and the second rotating member 702 are respectively connected with the first enclosure rod 101 and the second enclosure. The rod 102 is relatively fixed; when the lock pin 9 is disengaged from the slot 10 , the first rotating member 701 and the second rotating member 702 can rotate around the first surrounding rod 101 and the second surrounding rod 102 respectively.

The unlocking unit further includes an elastic member 17 disposed between the first surrounding rod 101 and the sliding member 8 and used for locking the locking pin 9 with the locking groove 10 .

The folding principle of the folding bed:

As shown in FIG. 1 , the folding bed is in a fully unfolded state, the locking pin 9 of the unlocking unit is clamped in the locking slot 10 , and the axis line of the rotating shaft 703 of the locking mechanism extends in the horizontal direction. When the folding bed needs to be folded, referring to FIG. 2 and FIG. 3 , the sliding member 8 is operated to slide so that the locking pin 9 is disengaged from the locking slot 10 , and then the locking mechanism 7 is rotated outwards, so that the rotating shaft 703 of the locking mechanism 7 is rotated until the rotating shaft 703 The axis line extends in the up and down direction, and then push a pair of enclosure rod assemblies 1 inwards towards each other, fold the enclosure rod assemblies 1 in half, pull up the connecting rod 6 at the same time, and fold the chassis in half, as shown in Figure 4, until the enclosure The rod assembly 1 is folded close to each other, the bottom frame is folded close to each other, and the vertical rods 2 are close to each other. As shown in Figures 5 and 6, after folding, the folding bed is flat and small.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the scope of protection of the present invention with this. Equivalent changes or modifications made in the spirit and spirit should all be included within the protection scope of the present invention.

Claims (10)

1. A folding bed comprising a foldable frame and a locking mechanism for locking the frame in an unfolded state, the frame comprising a plurality of uprights and a surrounding frame provided on the upper portions of the uprights, the surrounding frame comprising a pair of oppositely disposed and unfoldable surrounding bar assemblies and a pair of oppositely disposed upper side bars, the surrounding bar assemblies being provided between a pair of the upper side bars, characterized in that: the bedstead also comprises an unfolding and folding underframe arranged at the lower parts of the upright rods, when the bedstead is folded, the underframe is folded and extends upwards along the extending direction of the enclosing rod components, and the pair of enclosing rod components are oppositely folded along the extending direction of the upper side rod.

2. The folding bed of claim 1, wherein: the chassis includes a pair of relative setting and can expand and the folding bottom sprag subassembly, the bottom sprag subassembly is in following the fifty percent discount extends upwards in the direction that the rail subassembly extends, and is equipped with the connecting rod of rotating connection this pair of bottom sprag subassemblies in this fifty percent discount department.

3. The folding bed of claim 1, wherein: the underframe comprises a pair of lower side rods which are oppositely arranged and are arranged corresponding to the upper side rods and a pair of bottom brace rod assemblies which are oppositely arranged and can be unfolded and folded, two ends of each bottom brace rod assembly are respectively connected with the pair of lower side rods, and two ends of each lower side rod are respectively and relatively and rotatably connected with two adjacent upright rods; or the two ends of the bottom stay rod components are respectively connected with two adjacent vertical rods in a rotating mode, the two ends of the lower side rods are respectively connected with two adjacent vertical rods or the lower side rods are connected between the bottom stay rod components in a pair, the bottom stay rod components extend upwards in a folding mode along the extending direction of the enclosing rod components, and after the bottom stay rod components are folded, the lower side rods are mutually close.

4. The folding bed of claim 3, wherein: the underframe further comprises a connecting rod connected between the pair of bottom brace rod assemblies, each bottom brace rod assembly comprises a first bottom brace rod and a second bottom brace rod, one end of each of the first bottom brace rod and the second bottom brace rod is respectively and rotatably connected with the connecting rod, the other end of each of the first bottom brace rod and the second bottom brace rod is respectively and fixedly arranged with the pair of lower side rods, and two ends of each of the lower side rods are respectively and rotatably connected with two adjacent vertical rods.

5. The folding bed according to any one of claims 1 ~ 4, wherein the surrounding rod assembly comprises a first surrounding rod and a second surrounding rod, one end of the first surrounding rod and one end of the second surrounding rod are relatively rotatably connected, the other end of the first surrounding rod and the other end of the second surrounding rod are respectively rotatably connected with the upper parts of two adjacent vertical rods, and after folding, the first surrounding rod and the second surrounding rod of each surrounding rod assembly are mutually close.

6. The folding bed of claim 5, wherein: one of them in the enclosing pole subassembly encloses first enclosing pole, second enclosing pole and adjacent two the pole setting pivoted axis of rotation heart line extends along upper and lower direction slope respectively, and another encloses first enclosing pole, second enclosing pole and adjacent two of pole setting pivoted axis of rotation heart line extends along upper and lower direction is vertical, and is folding, and is a pair of first enclosing pole, the second enclosing pole of one of them in the enclosing pole subassembly encloses first enclosing pole, the second enclosing pole of pole setting subassembly and is located on the first enclosing pole, the second enclosing pole of another enclosing pole subassembly.

7. The folding bed of claim 6, wherein: the two ends of the upper side rod are respectively connected with two adjacent vertical rods, and the upper part of each vertical rod is respectively connected with the upper side rod and the first surrounding rod or the upper side rod and the second surrounding rod.

8. The folding bed of claim 5, wherein: the locking mechanism is arranged between the first surrounding rod and the second surrounding rod of the same surrounding rod component and is used for locking the first surrounding rod and the second surrounding rod in the unfolding state.

9. The folding bed of claim 8, wherein: locking mechanical system establishes including rotating the cover first rotation piece and rotation cover on the first part that encloses in pole, the second encloses the pole and establish first rotation piece, second rotate the second on another part in the pole, first rotation piece, second rotate and connect through pivot rotation each other between the piece, work as when folding bed is in the state of expanding, the axial lead of pivot extends along the horizontal direction, works as when folding bed is in fold condition, the axial lead of pivot extends along upper and lower direction.

10. The folding bed of claim 9, wherein: the bed frame further comprises an unlocking unit used for unlocking the locking mechanism, the unlocking unit comprises a sliding part arranged on one of the first enclosing rod and the second enclosing rod in a sliding mode along the length direction of the part, a lock pin fixedly arranged with the sliding part and a clamping groove which is formed in the locking mechanism and can be matched with and locked or separated from the lock pin, and when the lock pin is matched and locked with the clamping groove, the first rotating part and the second rotating part are respectively fixed relative to the first enclosing rod and the second enclosing rod; when the lock pin is separated from the clamping groove, the first rotating piece and the second rotating piece can rotate relative to the first enclosing rod and the second enclosing rod respectively, and the unlocking unit further comprises an elastic piece which is arranged between the one component and the sliding piece and used for enabling the lock pin to tend to be matched and locked with the clamping groove.

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