CN214414537U - Folding bed - Google Patents

Abstract

The utility model relates to a folding bed technical field discloses a folding bed, including first joint subassembly, first joint subassembly includes: the first joint seat is provided with a first locking surface and two unlocking surfaces; the two first connecting rods are respectively arranged at two opposite ends of the first joint seat, and each first connecting rod is rotatably connected with the first joint seat; the two bolts can rotate along with the first connecting rod and move along the length direction of the first connecting rod, and both the two bolts are abutted to the first locking surface; the button is arranged on the first joint seat, the button is configured to be capable of simultaneously pushing the two bolts to move towards directions departing from each other to be separated from the first locking surface, when the first connecting rod is rotated, each bolt can slide along one unlocking surface, and the button is also configured to be capable of resetting when external force is removed. The utility model discloses a folding bed has solved the cloth cover fragile and the lower problem of life of folding bed.

Description

Folding bed

Technical Field

The utility model relates to a folding bed technical field especially relates to a folding bed.

Background

Enclose on current folding bed have four first joint subassemblies, there is a second joint subassembly the bottom, control first joint subassembly and second joint subassembly respectively during the use and be collapsible and launch folding bed, but hardly guarantee in the operation process that the eight first connecting rods of four first joint subassemblies that enclose are in the unblock state simultaneously, consequently often need operate repeatedly just can realize folding bed's folding for folding bed's folding is comparatively loaded down with trivial details. Because the power and the direction of pressing the button vary from person to person, the folding in-process of folding bed of the first joint subassembly that has now, it is in the locking state often to appear one first connecting rod of first joint subassembly, another first connecting rod is in the unblock state, if the user forces the first connecting rod that will be in the locking state to unblock, will certainly cause the rolling of cloth cover to break, still can lead to the deformation of whole bedstead when serious, finally make the function of folding up of folding bed invalid, the life of folding bed has been reduced.

SUMMERY OF THE UTILITY MODEL

Based on above, the utility model aims to provide a folding bed has solved the cloth cover fragile and the lower problem of life of folding bed that leads to because the inconsistent cloth cover of two first connecting rods of the first joint subassembly of folding bed.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a folding bed comprising a first joint assembly, the first joint assembly comprising: the first joint seat is provided with a first locking surface and two unlocking surfaces, and the two unlocking surfaces are oppositely arranged; the two first connecting rods are respectively arranged at two opposite ends of the first joint seat, and each first connecting rod is rotatably connected with the first joint seat; the two bolts are respectively arranged corresponding to the two first connecting rods, each bolt can rotate along with the first connecting rod and can move along the length direction of the first connecting rod, and the two bolts are abutted against the first locking surface to enable the first joint component to be in a locking state; the button is arranged on the first joint seat and is configured to move towards the inside of the first joint seat when being pressed by external force, the button simultaneously pushes the two bolts to move towards the directions away from each other until the bolts are separated from the unlocking surfaces, each bolt can slide along one unlocking surface when the first connecting rod is rotated, and the button is also configured to reset when the external force is removed.

As a preferred scheme of folding bed, be equipped with the spout that sets up along self length direction on the bolt, first joint subassembly still includes: each rotating shaft can slide along the sliding groove of one bolt, and each rotating shaft penetrates through one first connecting rod and one sliding groove; two first elastic component, every first elastic component all sets up one in the spout, the one end of first elastic component with the pivot links to each other, the other end with the bolt butt, first elastic component with the pivot is along keeping away from the direction of button distributes in proper order.

As a preferred scheme of folding bed, be equipped with two first inclined planes on the button, two first inclined planes respectively with two the bolt corresponds the setting, when pressing the button, the bolt can be followed first inclined plane slides to the lower extreme on first inclined plane.

As a preferable aspect of the folding bed, the folding bed further includes a second joint assembly, and the second joint assembly includes: a second joint seat; one end of each lock rod is rotatably connected with the second joint seat, and a second locking surface is arranged on each lock rod; the two ends of the second elastic piece are respectively connected with the two lock rods; the two second connecting rods are respectively arranged at two opposite ends of the second joint seat, each second connecting rod is rotatably connected with the second joint seat, and each second connecting rod can be abutted against the second locking surface of one locking rod so as to enable the second joint component to be in a locking state; the lifting piece is respectively connected with the other ends of the two lock rods, when the lifting piece is lifted upwards, the two lock rods move towards the direction close to each other, the second elastic piece is in a compressed state, and meanwhile, the second connecting rod is separated from the lock rods; when the portable piece is loosened, the second elastic piece pushes the two locking rods to move towards the directions far away from each other so as to reset the locking rods.

As a preferred scheme of folding bed, be equipped with on the locking lever with the second inclined plane that the second locking surface is adjacent rotates during the second connecting rod, one can be followed to the second connecting rod the second inclined plane slides, just the locking rod orientation is close to another the direction motion of locking rod, until the second connecting rod with second locking surface butt.

Preferably, the second link is a hollow rod, an inner wall of the hollow rod is capable of abutting against the second locking surface, and an outer wall of the hollow rod is capable of abutting against the second inclined surface.

As a preferred scheme of the folding bed, each locking rod is provided with a limiting protrusion, and when the second connecting rod is abutted to the second locking surface, the limiting protrusion is abutted to the second joint seat so as to prevent the locking rod from moving in a direction away from the other locking rod.

As a preferred scheme of the folding bed, the folding bed further comprises four upper connecting pieces and four standing foot assemblies, the number of the first joint assemblies is four, each upper connecting piece is respectively connected with two first joint assemblies in a rotating manner, each upper connecting piece is respectively connected with one standing foot assembly, and the two standing foot assemblies arranged diagonally are respectively connected with two second connecting rods in a rotating manner.

As a preferable scheme of the folding bed, the folding bed further comprises two third connecting rods, one end of each third connecting rod is rotatably connected with one of the stand assemblies, and the other end of each third connecting rod is rotatably connected with the second joint seat.

As a preferred scheme of folding bed, be equipped with the constant head tank on one side of bolt with first locking surface butt and in one of first locking surface, be equipped with on the other with the location protruding muscle that the constant head tank corresponds, the bolt with when first locking surface butt the protruding muscle of location is located in the constant head tank.

As a preferred scheme of the folding bed, the unlocking surface is a first curved surface, and the two unlocking surfaces form an octagonal surface.

As a preferable scheme of the folding bed, a limit boss is arranged on the button, a limit groove is arranged on the first joint seat, and when the button is moved towards the inside of the first joint seat by external force, the limit boss can slide in the limit groove.

The utility model has the advantages that: the utility model discloses a when the button of folding bed is pressed, the button promotes two bolts and removes simultaneously to the position that breaks away from with the unblock face, rotates first connecting rod this moment, and the bolt slides along the unblock face, and two first connecting rods all are in the unblock state promptly, can not have a first connecting rod and be in the unblock state, another first connecting rod is in the condition of lock-out state, has reduced the damage to the cloth cover of folding bed, and the folding bed is difficult for taking place to warp, has prolonged the life of folding bed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic view of a folding bed according to an embodiment of the present invention in an unfolded state;

fig. 2 is an exploded view of a first joint assembly provided by an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a first joint assembly in a locked position according to an embodiment of the present invention;

fig. 4 is a first cross-sectional view of a first joint assembly during an unlocking process according to an embodiment of the present invention;

fig. 5 is a second cross-sectional view of the first joint assembly during unlocking as provided by an embodiment of the present invention;

fig. 6 is a cross-sectional view in a first orientation after a first joint assembly is fully unlocked as provided by an embodiment of the present invention;

fig. 7 is a cross-sectional view in a second orientation after a first joint assembly is fully unlocked as provided by an embodiment of the present invention;

fig. 8 is an exploded view of a second joint assembly according to an embodiment of the present invention;

figure 9 is a cross-sectional view of a second joint assembly in a locked position according to an embodiment of the present invention;

fig. 10 is a cross-sectional view of a second joint assembly during unlocking as provided by an embodiment of the present invention;

fig. 11 is a cross-sectional view of the second joint assembly provided in accordance with an embodiment of the present invention after it has been fully unlocked;

fig. 12 is a schematic view of the folding bed according to the embodiment of the present invention in an unlocked state.

In the figure:

1. a first joint assembly; 11. a first joint seat; 1101. a first locking surface; 1102. unlocking the surface; 1103. positioning a groove; 1104. a limiting groove; 12. a first link; 13. a bolt; 131. positioning the convex ribs; 130. a chute; 14. a button; 140. a first inclined plane; 141. a limiting boss; 15. a rotating shaft; 16. a first elastic member;

2. a second joint assembly; 21. a second joint seat; 22. a lock lever; 2201. a second locking surface; 2202. a second inclined plane; 221. a limiting bulge; 23. a second elastic member; 24. a second link; 25. a handle;

3. an upper connecting member; 4. a stand assembly; 5. a third link; 6. a support assembly.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiment provides a folding bed, as shown in fig. 1 to 7, the folding bed includes a first joint assembly 1, the first joint assembly 1 includes a first joint seat 11, two first connecting rods 12, two latches 13 and a button 14, the first joint seat 11 is provided with a first locking surface 1101 and two unlocking surfaces 1102, the two unlocking surfaces 1102 are disposed oppositely, and the two unlocking surfaces 1102 are adjacent to the first locking surface 1101, the two first connecting rods 12 are respectively disposed at two opposite ends of the first joint seat 11, each first connecting rod 12 is rotatably connected to the first joint seat 11, the two latches 13 are respectively disposed corresponding to the two first connecting rods 12, each latch 13 is capable of rotating with the first connecting rod 12 and each latch 13 is capable of moving along the length direction of the corresponding first connecting rod 12, the two latches 13 are capable of abutting against the first locking surface 1101 to enable the first joint assembly 1 to be in a locking state, a push button 14 is arranged on the first joint seat 11, the push button 14 is configured to move towards the inside of the first joint seat 11 when pressed by an external force, the push button 14 simultaneously pushes the two pins 13 to move towards a direction away from each other until the pins 13 disengage from the first locking surface 1101, at which time the first link 12 is rotated, each pin 13 can slide along one unlocking surface 1102, and the push button 14 is further configured to be automatically reset when the external force is removed.

When the button 14 of the folding bed provided by the embodiment is pressed, the button 14 simultaneously pushes the two pins 13 to move to the position separated from the first locking surface 1101, at this time, the first connecting rod 12 is rotated, the pins 13 slide along the unlocking surface 1102, that is, the two first connecting rods 12 are both in the unlocking state, the situation that one first connecting rod 12 is in the unlocking state and the other first connecting rod 12 is in the locking state cannot occur, the damage to the cloth cover of the folding bed is reduced, the folding bed is not easy to deform, and the service life of the folding bed is prolonged.

As shown in fig. 4, the button 14 of the present embodiment is provided with two first inclined planes 140, the two first inclined planes 140 are respectively disposed corresponding to the two latches 13, and when the button 14 is pressed, the latches 13 can slide along the first inclined planes 140 to the lower ends of the first inclined planes 140. As shown in fig. 4, the unlocking surface 1102 is a first curved surface, the end surface of the plug pin 13 abutting against the first curved surface is a second curved surface, the second curved surface can be matched with the first curved surface, the two unlocking surfaces 1102 form an octagonal surface, and when the first connecting rod 12 is rotated, the plug pin 13 can slide onto the unlocking surface 1102. In other embodiments, the shape of the unlocking surface 1102 is not limited to the first curved surface of the present embodiment, and may also be an inclined plane, which is specifically set according to actual needs.

Specifically, when the button 14 is pressed, because two first inclined planes 140 are arranged on the button 14, the two pins 13 move towards directions away from each other along the first inclined planes 140 until the pins 13 move to the lowest end of the first inclined planes 140, at this time, if the button 14 is continuously pressed, the pins 13 move along the vertical side surfaces of the button 14, then the first connecting rod 12 is rotated, the first connecting rod 12 can drive the pins 13 to rotate, the pins 13 abut against the unlocking surface 1102 on the first connecting seat, and the pins 13 slide along the unlocking surface 1102.

As shown in fig. 2, the sliding groove 130 is formed in the plug 13 of this embodiment along the length direction thereof, the first joint assembly 1 further includes two rotating shafts 15 and two first elastic members 16, each first elastic member 16 is a spring, each rotating shaft 15 can slide along the sliding groove 130 of one plug 13, each rotating shaft 15 penetrates through one first connecting rod 12 and one sliding groove 130, the first connecting rod 12 can only rotate relative to the first joint seat 11, each first elastic member 16 is disposed in one sliding groove 130, one end of each first elastic member 16 is connected to the rotating shaft 15, the other end of each first elastic member 16 abuts against the plug 13, and the first elastic members 16 and the rotating shafts 15 are sequentially distributed along the direction away from the button 14.

Specifically, in the unlocking process, the button 14 is pressed, the button 14 simultaneously pushes the two pins 13 to move in the direction away from each other, at this time, the rotating shaft 15 slides in the sliding groove 130, the first elastic piece 16 is gradually compressed, when the pins 13 move to the position separated from the first locking surface 1101, the first connecting rod 12 is rotated, the first connecting rod 12 drives the pins 13 to rotate by taking the rotating shaft 15 as a rotating shaft, the pins 13 abut against the unlocking surface 1102, at this time, the button 14 is released, and the button 14 is reset to the initial state.

For better positioning the first joint assembly 1 in the locked state, as shown in fig. 4, a positioning groove 1103 is provided on a side of the latch 13 abutting against the first locking surface 1101, a positioning rib 131 corresponding to the positioning groove 1103 is provided on the first locking surface 1101, and the positioning rib 131 is located in the positioning groove 1103 when the latch 13 abuts against the first locking surface 1101. As shown in fig. 3, when the first joint assembly 1 is in the locked state, the positioning rib 131 is located in the positioning groove 1103. When the button 14 is pressed, the button 14 firstly pushes the latch 13 and the first link 12 to rotate by a small angle and the two latches 13 move in directions away from each other, when the positioning rib 131 is separated from the positioning groove 1103, the positioning rib 131 abuts against the first locking surface 1101, as shown in fig. 4, the button 14 is continuously pressed, the button 14 pushes the two latches 13 to continue moving in directions away from each other until the latches 13 move to the lowest end of the first inclined surface 140 of the button 14, at this time, if the button 14 is continuously pressed, the latches 13 move along the vertical side surface of the button 14, then the first link 12 is rotated, as shown in fig. 6, the first link 12 can drive the latches 13 to rotate, the latches 13 abut against the unlocking surface 1102 on the first connecting seat, and the latches 13 slide along the unlocking surface 1102.

When the button 14 is in the pressed state, first one of the first links 12 is rotated until one of the latches 13 engaged with the first link 12 abuts against one of the unlocking surfaces 1102 on the first joint seat 11, as shown in fig. 5, since the other first link 12 still abuts against a vertical side surface of the button 14, at this time, rotating the other first link 12 can still rotate the other latch 13 engaged with the first link 12 to a position abutting against the other unlocking surface 1102, so that the first joint assembly 1 is in the unlocked state.

In order to ensure that the button 14 moves in the set direction, as shown in fig. 7, the button 14 of this embodiment is provided with a limit boss 141, the first joint seat 11 is provided with a limit groove 1104, the limit groove 1104 extends along the sliding direction of the button 14, and when the button 14 is subjected to an external force and moves toward the inside of the first joint seat 11, the limit boss 141 can slide in the limit groove 1104.

As shown in fig. 1 and fig. 8 to fig. 11, the folding bed of this embodiment further includes a second joint assembly 2, the second joint assembly 2 includes a second joint seat 21, two lock rods 22, a second elastic member 23, two second connecting rods 24 and a hand-held member 25, one end of each lock rod 22 is rotatably connected to the second joint seat 21, the lock rods 22 are provided with second locking surfaces 2201, two ends of the second elastic member 23 are respectively connected to the two lock rods 22, the two second connecting rods 24 are respectively provided at two opposite ends of the second joint seat 21, each second connecting rod 24 is rotatably connected to the second joint seat 21, each second connecting rod 24 can abut against the second locking surface 2201 of one lock rod 22 to enable the second joint assembly 2 to be in a locking state, the hand-held member 25 is respectively connected to the other ends of the two lock rods 22, when the hand-held member 25 is lifted upwards, the two lock rods 22 move towards a direction close to each other and the second elastic member 23 is in a compressed state, while the second link 24 is disengaged from the lock lever 22; when the hand piece 25 is released, the second elastic piece 23 pushes the two lock levers 22 to move away from each other to reset the lock levers 22.

Specifically, the handle 25 of the present embodiment is a pull rope, the connection position of the second link 24 and the second joint seat 21 is located at one end of the second link 24 close to the lock lever 22, when the handle 25 is pulled upward, the second joint seat 21 moves upward along with the handle 25, under the action of gravity, both the second links 24 rotate relative to the second joint seat 21, and the second elastic member 23 is in a compressed state, the second link 24 gradually disengages from the lock lever 22, and when the second link 24 completely disengages from the lock lever 22, the handle 25 is released, and the lock lever 22 resets.

The existing second joint assembly is limited by the structure of the folding bed, when the second joint assembly in a locking and turning state is unlocked, two second connecting rods of the second joint assembly also have the problem that one second connecting rod is in a locking state and the other second connecting rod is in an unlocking state, if a user forcibly unlocks the second connecting rod in the locking state, the cloth cover can be damaged by rolling, the deformation of the whole bed frame can be caused in serious conditions, the folding function of the folding bed is finally disabled, and the service life of the folding bed is shortened. When the second joint assembly 2 in the locking and rotating state of the present embodiment is unlocked, only the hand-held piece 25 needs to be lifted upwards, and both the two second connecting rods 24 and the two locking rods 22 rotate relative to the second joint base 21, as shown in fig. 9, the second connecting rod 24 contacts with the locking rod 22 at the beginning, and as the hand-held piece 25 drives the locking rod 22 to continue to rotate, the compression amount of the second elastic piece 23 gradually increases, and the second connecting rod 24 and the locking rod 22 start to separate, as shown in fig. 10, at this time, because the second connecting rod 24 is not obstructed by the locking rod 22, the second connecting rod 24 can rotate to a position close to the vertical position, and when the second connecting rod 24 and the locking rod 22 are completely separated, the hand-held piece 25 is released, as shown in fig. 11, the locking rod 22 resets, and both the second connecting rods do not abut against the locking rod 22, and the second joint base 21 is in the unlocking state.

As shown in fig. 11, the lock lever 22 of the present embodiment is provided with a second inclined surface 2202 adjacent to the second locking surface 2201, when the second link 24 is rotated, the second link 24 can slide along the second inclined surface 2202 of one lock lever 22, and the lock lever 22 moves toward a direction close to the other lock lever 22 until the second link 24 abuts against the second locking surface 2201. Specifically, the second link 24 of the present embodiment is a hollow rod, an inner wall of which can abut against the second locking surface 2201, and an outer wall of which can abut against the second slope 2202.

Because the lock rod 22 is provided with the second inclined surface 2202, when the second joint assembly 2 in the unlocked state is locked, the second link 24 is rotated, after the outer wall of the second link 24 abuts against the second inclined surface 2202, the second link 24 continues to rotate, the second link 24 pushes the lock rod 22 to rotate towards the other lock rod 22, the second elastic member 23 is compressed until the outer wall of the second link 24 abuts against the lower end of the second inclined surface 2202, at this time, the second link 24 continues to rotate, and the inner wall of the second link 24 abuts against the second locking surface 2201 of the lock rod 22. The other second link 24 is rotated in the same manner until the inner wall of the second link 24 abuts against the second locking surface 2201 of the other lock lever 22, and the second joint assembly 2 is in the locked state. In the locking process, the two second connecting rods 24 can be simultaneously rotated, one second connecting rod 24 can be rotated firstly, and then the other second connecting rod 24 is rotated, and the specific operation steps are selected according to actual requirements.

In order to limit the rotation position of the lock lever 22, as shown in fig. 11, each lock lever 22 is provided with a limit protrusion 221, and when the second link 24 abuts against the second locking surface 2201, the limit protrusion 221 abuts against the second joint seat 21 to prevent the lock lever 22 from moving in a direction away from the other lock lever 22. When the second joint assembly 2 is in the locked state, the inner wall of the second link 24 can abut against the second locking surface 2201, and since the limit protrusion 221 of the lock lever 22 abuts against the second joint seat 21, the position of the lock lever 22 is relatively fixed, so that the position of the second link 24 is relatively fixed.

Specifically, as shown in fig. 1 and fig. 11, the folding bed of the present embodiment further includes four upper connecting members 3, four standing leg assemblies 4, two third connecting rods 5 and two supporting assemblies 6, the number of the first joint assemblies 1 is four, each upper connecting member 3 is rotatably connected to the first connecting rods 12 of two first joint assemblies 1, and each upper connecting member 3 is fixedly connected to one standing leg assembly 4. Two second connecting rods 24 of the second joint component 2 are respectively rotatably connected with two foot components 4 arranged diagonally, one ends of two third connecting rods 5 are respectively rotatably connected with the other two foot components 4, the other ends of the third connecting rods 5 are respectively rotatably connected with the second joint seat 21, one ends of two supporting components 6 are rotatably connected with the second joint seat 21, and the other ends can be abutted against the ground to support the folding bed. Wherein upper portion connecting piece 3, footing subassembly 4 and supporting component 6 all belong to prior art, specifically accessible outsourcing obtains.

As shown in fig. 12, when the folding bed is in the folded state, the four first joint seats 11 are located above the four upper connecting members 3, and the second joint seat 21 is higher than the folding bed in the unfolded state. When the folding bed in the folding state is unfolded, the four upper connecting pieces 3 are pulled outwards, the height of the first joint seat 11 is gradually increased, the height of the second joint seat 21 is gradually decreased, the button 14 does not need to be pressed, and the first joint component 1 and the second joint component 2 are gradually changed into the locking state from the unlocking state.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (12)

1. A folding bed, characterized in that it comprises a first joint assembly (1), said first joint assembly (1) comprising:

the joint structure comprises a first joint seat (11), wherein a first locking surface (1101) and two unlocking surfaces (1102) are arranged on the first joint seat (11), and the two unlocking surfaces (1102) are arranged oppositely;

the two first connecting rods (12) are respectively arranged at two opposite ends of the first joint seat (11), and each first connecting rod (12) is rotatably connected with the first joint seat (11);

the two bolts (13) are respectively arranged corresponding to the two first connecting rods (12), each bolt (13) can rotate along with the first connecting rod (12) and move along the length direction of the first connecting rod (12), and the two bolts (13) can abut against the first locking surface (1101) to enable the first joint component (1) to be in a locking state;

a button (14) disposed on the first joint seat (11), the button (14) being configured to move towards the inside of the first joint seat (11) when pressed by an external force, the button (14) simultaneously pushing the two pins (13) to move away from each other until the pins (13) disengage from the first locking surface (1101), each pin (13) being slidable along one of the unlocking surfaces (1102) when the first link (12) is rotated, the button (14) being further configured to be resettable when the external force is removed.

2. The folding bed of claim 1, wherein the latch (13) is provided with a sliding slot (130) along the length direction thereof, and the first joint assembly (1) further comprises:

two rotating shafts (15), each rotating shaft (15) can slide along the sliding groove (130) of one bolt (13), and each rotating shaft (15) penetrates through one first connecting rod (12) and one sliding groove (130);

two first elastic component (16), every first elastic component (16) all set up one in spout (130), the one end of first elastic component (16) with pivot (15) link to each other, the other end with bolt (13) butt, first elastic component (16) with pivot (15) are along keeping away from the direction of button (14) distributes in proper order.

3. The folding bed according to claim 1, characterized in that two first inclined planes (140) are provided on the button (14), and the two first inclined planes (140) are respectively provided corresponding to the two latches (13), and when the button (14) is pressed, the latches (13) can slide along the first inclined planes (140) to the lower end of the first inclined planes (140).

4. The folding bed according to claim 1, characterized in that it further comprises a second articulation assembly (2), said second articulation assembly (2) comprising:

a second joint seat (21);

one end of each lock rod (22) is rotatably connected with the second joint seat (21), and a second locking surface (2201) is arranged on each lock rod (22);

the two ends of the second elastic piece (23) are respectively connected with the two lock rods (22);

the two second connecting rods (24) are respectively arranged at two opposite ends of the second joint seat (21), each second connecting rod (24) is rotatably connected with the second joint seat (21), and each second connecting rod (24) can be abutted against the second locking surface (2201) of one locking rod (22) to enable the second joint assembly (2) to be in a locking state;

the lifting piece (25) is respectively connected with the other ends of the two lock rods (22), when the lifting piece (25) is lifted upwards, the two lock rods (22) move towards the direction close to each other, the second elastic piece (23) is in a compressed state, and meanwhile, the second connecting rod (24) is separated from the lock rods (22); when the hand piece (25) is released, the second elastic piece (23) pushes the two lock rods (22) to move towards the directions far away from each other so as to reset the lock rods (22).

5. The folding bed of claim 4, wherein the locking rod (22) is provided with a second inclined surface (2202) adjacent to the second locking surface (2201), and when the second connecting rod (24) is rotated, the second connecting rod (24) can slide along the second inclined surface (2202) of one locking rod (22), and the locking rod (22) moves towards a direction close to the other locking rod (22) until the second connecting rod (24) abuts against the second locking surface (2201).

6. The folding bed according to claim 5, characterized in that said second link (24) is a hollow rod, the inner wall of which can abut against said second locking surface (2201) and the outer wall of which can abut against said second slope (2202).

7. The folding bed of claim 4, wherein each locking rod (22) is provided with a limiting protrusion (221), and when the second connecting rod (24) abuts against the second locking surface (2201), the limiting protrusion (221) abuts against the second joint seat (21) to prevent the locking rod (22) from moving in a direction away from the other locking rod (22).

8. The folding bed according to claim 4, characterized in that the folding bed further comprises four upper connecting members (3) and four stand assemblies (4), the number of the first joint assemblies (1) is four, each upper connecting member (3) is respectively rotatably connected with two of the first joint assemblies (1), each upper connecting member (3) is respectively connected with one of the stand assemblies (4), and the two stand assemblies (4) arranged diagonally are respectively rotatably connected with two of the second connecting rods (24).

9. The folding bed according to claim 8, further comprising two third connecting rods (5), wherein each of said third connecting rods (5) has one end rotatably connected to one of said leg assemblies (4) and the other end rotatably connected to said second joint base (21).

10. The folding bed according to claim 1, wherein one of the side of the latch (13) abutting against the first locking surface (1101) and the first locking surface (1101) is provided with a positioning groove (1103), the other side is provided with a positioning rib (131) corresponding to the positioning groove (1103), and the positioning rib (131) is positioned in the positioning groove (1103) when the latch (13) abuts against the first locking surface (1101).

11. The folding bed of claim 1, wherein said unlocking surface (1102) is a first curved surface, and two of said unlocking surfaces (1102) form an octagon.

12. The folding bed of claim 1, wherein a limiting boss (141) is provided on the button (14), a limiting groove (1104) is provided on the first joint seat (11), and when the button (14) is moved toward the inside of the first joint seat (11) by an external force, the limiting boss (141) can slide in the limiting groove (1104).

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