A folding bed

Abstract

The present invention relates to the technical field of folding beds, and discloses a folding bed, including a first joint assembly, the first joint assembly including: a first joint seat, on which a first locking surface and two unlocking surfaces are provided; two first connecting rods, respectively arranged at two opposite ends of the first joint seat, each of which is rotatably connected to the first joint seat; two latches, which can rotate with the first connecting rod and move along the length direction of the first connecting rod, and both of which abut against the first locking surface; a button, which is arranged on the first joint seat, and the button is configured to simultaneously push the two latches to move in directions away from each other until they are disengaged from the first locking surface, and when the first connecting rod is rotated, each latch can slide along an unlocking surface, and the button is also configured to be reset when the external force is removed. The folding bed disclosed by the present invention solves the problems of easy damage of the cloth cover and the low service life of the folding bed.

Description

Technical Field

[0001] The present invention relates to the technical field of folding beds, and in particular to a folding bed. Background Art

[0002] The existing folding bed has four first joint assemblies on the upper part and a second joint assembly on the bottom. When in use, the folding bed can be folded and unfolded by respectively manipulating the first joint assembly and the second joint assembly. However, it is difficult to ensure that the eight first connecting rods of the four first joint assemblies on the upper part are in an unlocked state at the same time during operation. Therefore, repeated operations are often required to achieve folding of the folding bed, making the folding of the folding bed more complicated. Since the force and direction of pressing the button vary from person to person, during the folding process of the existing first joint assembly, one of the first connecting rods of the first joint assembly is often in a locked state and the other first connecting rod is in an unlocked state. If the user forcibly unlocks the first connecting rod in a locked state, it is bound to cause the cloth cover to be crushed, and in severe cases, it will also cause the deformation of the entire bed frame, ultimately making the folding function of the folding bed ineffective, reducing the service life of the folding bed. Summary of the invention

[0003] Based on the above, the object of the present invention is to provide a folding bed, which solves the problem of easy damage of the cloth cover and short service life of the folding bed due to inconsistent states of the two first connecting rods of the first joint assembly of the folding bed.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A folding bed comprises a first joint assembly, wherein the first joint assembly comprises: a first joint seat, wherein a first locking surface and two unlocking surfaces are provided on the first joint seat, and the two unlocking surfaces are arranged opposite to each other; two first connecting rods, wherein the two first connecting rods are respectively arranged at two opposite ends of the first joint seat, and each of the first connecting rods is rotatably connected to the first joint seat; two latches, wherein the two latches are respectively arranged corresponding to the two first connecting rods, each of the latches can rotate with the first connecting rod and move along the length direction of the first connecting rod, and the two latches abut against the first locking surface to put the first joint assembly in a locked state; a button, which is arranged on the first joint seat, wherein the button is configured to move toward the inside of the first joint seat when pressed by an external force, and the button simultaneously pushes the two latches to move in directions away from each other until the latches are disengaged from the unlocking surfaces, and when the first connecting rod is rotated, each of the latches can slide along one of the unlocking surfaces, and the button is further configured to be reset when the external force is removed.

[0006] As a preferred solution for a folding bed, the latch is provided with a slide groove arranged along the length direction of the latch, and the first joint assembly also includes: two rotating shafts, each of which can slide along the slide groove of one of the latches, and each of the rotating shafts passes through one of the first connecting rods and one of the slide grooves; two first elastic members, each of the first elastic members is arranged in one of the slide grooves, one end of the first elastic member is connected to the rotating shaft, and the other end abuts against the latch, and the first elastic members and the rotating shafts are distributed in sequence in the direction away from the button.

[0007] As a preferred solution for a folding bed, the button is provided with two first inclined surfaces, and the two first inclined surfaces are respectively arranged corresponding to the two latches, and when the button is pressed, the latch can slide along the first inclined surfaces to the lower end of the first inclined surfaces.

[0008] As a preferred embodiment of the folding bed, the folding bed also includes a second joint assembly, which includes: a second joint seat; two locking rods, one end of each locking rod is rotatably connected to the second joint seat, and a second locking surface is provided on the locking rod; a second elastic member, both ends of the second elastic member are respectively connected to the two locking rods; two second connecting rods, two second connecting rods are respectively arranged at the two opposite ends of the second joint seat, each second connecting rod is rotatably connected to the second joint seat, and each second connecting rod can abut against the second locking surface of one locking rod to put the second joint assembly into a locked state; a carrying piece, which is respectively connected to the other ends of the two locking rods, and when the carrying piece is lifted upward, the two locking rods move in a direction close to each other and the second elastic member is in a compressed state, and at the same time the second connecting rod is disengaged from the locking rod; when the carrying piece is released, the second elastic member pushes the two locking rods to move in a direction away from each other to reset the locking rods.

[0009] As a preferred solution for a folding bed, the locking rod is provided with a second inclined surface adjacent to the second locking surface. When the second connecting rod is rotated, the second connecting rod can slide along the second inclined surface of one locking rod, and the locking rod moves toward the direction approaching the other locking rod until the second connecting rod abuts against the second locking surface.

[0010] As a preferred solution for a folding bed, the second connecting rod is a hollow rod, the inner wall of the hollow rod can abut against the second locking surface, and the outer wall of the hollow rod can abut against the second inclined surface.

[0011] As a preferred solution for a folding bed, each locking rod is provided with a limiting protrusion, and when the second connecting rod abuts against the second locking surface, the limiting protrusion abuts against the second joint seat to prevent the locking rod from moving in a direction away from the other locking rod.

[0012] As a preferred embodiment of a folding bed, the folding bed also includes four upper connecting members and four leg assemblies, the number of the first joint assemblies is four, each of the upper connecting members is rotatably connected to two of the first joint assemblies, and each of the upper connecting members is connected to one of the leg assemblies, and the two diagonally arranged leg assemblies are rotatably connected to two of the second connecting rods.

[0013] As a preferred solution of a folding bed, the folding bed further comprises two third connecting rods, one end of each of the third connecting rods is rotatably connected to one of the foot assemblies, and the other end is rotatably connected to the second joint seat.

[0014] As a preferred solution for a folding bed, a positioning groove is provided on one of the first locking surfaces and one of the sides where the latch abuts against the first locking surface, and a positioning rib corresponding to the positioning groove is provided on the other side, and the positioning rib is located in the positioning groove when the latch abuts against the first locking surface.

[0015] As a preferred solution for a folding bed, the unlocking surface is a first curved surface, and the two unlocking surfaces form an eight-shaped surface.

[0016] As a preferred solution for a folding bed, a limiting boss is provided on the button, and a limiting groove is provided on the first joint seat. When the button is subjected to an external force and moves toward the inside of the first joint seat, the limiting boss can slide in the limiting groove.

[0017] The beneficial effects of the present invention are as follows: when the button of the folding bed disclosed in the present invention is pressed, the button pushes the two latches to move simultaneously to a position disengaged from the unlocking surface, at which time the first connecting rod is rotated and the latch slides along the unlocking surface, that is, the two first connecting rods are both in an unlocked state, and there will not be a situation where one first connecting rod is in an unlocked state and the other first connecting rod is in a locked state, thereby reducing damage to the cloth cover of the folding bed, making it less likely for the folding bed to be deformed, and extending the service life of the folding bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0019] Figure 1 is a schematic diagram of a folding bed provided by a specific embodiment of the present invention in an unfolded state;

[0020] Figure 2 is a disassembled diagram of a first joint assembly provided in a specific embodiment of the present invention;

[0021] Figure 3 is a cross-sectional view of a first joint assembly provided by a specific embodiment of the present invention when it is in a locked state;

[0022] Figure 4 is a first cross-sectional view of the first joint assembly during the unlocking process provided by a specific embodiment of the present invention;

[0023] Figure 5 is a second cross-sectional view of the first joint assembly provided by a specific embodiment of the present invention during the unlocking process;

[0024] Figure 6 is a cross-sectional view in a first direction after the first joint assembly provided by a specific embodiment of the present invention is completely unlocked;

[0025] Figure 7 is a cross-sectional view in a second direction after the first joint assembly provided by a specific embodiment of the present invention is completely unlocked;

[0026] Figure 8 is a disassembled diagram of a second joint assembly provided in a specific embodiment of the present invention;

[0027] Fig. 9 is a cross-sectional view of a second joint assembly provided by a specific embodiment of the present invention when it is in a locked state;

[0028] Fig.10 is a cross-sectional view of the second joint assembly during the unlocking process provided by a specific embodiment of the present invention;

[0029] Fig.11 is a cross-sectional view of a second joint assembly provided by a specific embodiment of the present invention after being completely unlocked;

[0030] Fig.12 It is a schematic diagram of a folding bed provided by a specific embodiment of the present invention in an unlocked state.

[0031] In the figure:

[0032] 1. first joint assembly; 11. first joint seat; 1101. first locking surface; 1102. unlocking surface; 1103. positioning groove; 1104. limiting groove; 12. first connecting rod; 13. latch; 131. positioning rib; 130. slide groove; 14. button; 140. first inclined surface; 141. limiting boss; 15. rotating shaft; 16. first elastic member;

[0033] 2. Second joint assembly; 21. Second joint seat; 22. Lock rod; 2201. Second locking surface; 2202. Second inclined surface; 221. Position limiting protrusion; 23. Second elastic member; 24. Second connecting rod; 25. Hand piece;

[0034] 3. Upper connecting part; 4. Leg assembly; 5. Third connecting rod; 6. Support assembly. DETAILED DESCRIPTION

[0035] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] This embodiment provides a folding bed, such as Figures 1 to 7As shown, the folding bed includes a first joint assembly 1, which 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 arranged opposite to each other, and the two unlocking surfaces 1102 are adjacent to the first locking surface 1101, the two first connecting rods 12 are respectively arranged at the opposite ends of the first joint seat 11, each of the first connecting rods 12 is rotatably connected to the first joint seat 11, the two latches 13 are respectively arranged corresponding to the two first connecting rods 12, and each latch 13 can rotate with the first connecting rod 12 The first connecting rod 12 is movable and each latch 13 can move along the length direction of the corresponding first connecting rod 12, and the two latches 13 can abut against the first locking surface 1101 to put the first joint assembly 1 in a locked state. The button 14 is arranged on the first joint seat 11, and the button 14 is configured to move toward the inside of the first joint seat 11 when pressed by an external force. The button 14 simultaneously pushes the two latches 13 to move in directions away from each other until the latches 13 are disengaged from the first locking surface 1101. At this time, the first connecting rod 12 is rotated, and each latch 13 can slide along an unlocking surface 1102. The button 14 is also configured to automatically reset when the external force is removed.

[0039] When the button 14 of the folding bed provided in this embodiment is pressed, the button 14 simultaneously pushes the two latches 13 to move to a position disengaged from the first locking surface 1101. At this time, the first connecting rod 12 is rotated, and the latch 13 slides along the unlocking surface 1102, that is, the two first connecting rods 12 are both in an unlocked state. There will not be a situation where one first connecting rod 12 is in an unlocked state and the other first connecting rod 12 is in a locked state, which reduces damage to the cloth cover of the folding bed, makes the folding bed less likely to deform, and extends the service life of the folding bed.

[0040] like Figure 4 As shown, the button 14 of this embodiment is provided with two first inclined surfaces 140, and the two first inclined surfaces 140 are respectively provided corresponding to the two latches 13. When the button 14 is pressed, the latches 13 can slide along the first inclined surfaces 140 to the lower end of the first inclined surfaces 140. Figure 4 As shown, the unlocking surface 1102 is a first curved surface, and the end surface of the latch 13 abutting against the first curved surface is a second curved surface, and the second curved surface can cooperate with the first curved surface, and the two unlocking surfaces 1102 form an eight-shaped surface, and when the first connecting rod 12 is rotated, the latch 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 this embodiment, and can also be an inclined plane, which is specifically set according to actual needs.

[0041] Specifically, when the button 14 is pressed, since the button 14 is provided with two first inclined surfaces 140, the two latches 13 move along the first inclined surfaces 140 in a direction away from each other until the latches 13 move to the lowermost end of the first inclined surfaces 140. At this time, if the button 14 continues to be pressed, the latches 13 move along the vertical side surfaces of the button 14, and then the first connecting rod 12 is rotated. The first connecting rod 12 can drive the latches 13 to rotate, and the latches 13 abut against the unlocking surface 1102 on the first connecting seat, and the latches 13 slide along the unlocking surface 1102.

[0042] like Figure 2 As shown, the latch 13 of this embodiment is provided with a slide groove 130 arranged along its own length direction, and the first joint assembly 1 also includes two rotating shafts 15 and two first elastic members 16, the first elastic member 16 is a spring, each rotating shaft 15 can slide along the slide groove 130 of a latch 13, each rotating shaft 15 passes through a first connecting rod 12 and a slide groove 130, the first connecting rod 12 can only rotate relative to the first joint seat 11, each first elastic member 16 is arranged in a slide groove 130, one end of the first elastic member 16 is connected to the rotating shaft 15, and the other end of the first elastic member 16 abuts against the latch 13, and the first elastic member 16 and the rotating shaft 15 are distributed in sequence in the direction away from the button 14.

[0043] Specifically, during the unlocking process, the button 14 is pressed, and the button 14 simultaneously pushes the two latches 13 to move in directions away from each other. At this time, the shaft 15 slides in the slide groove 130, and the first elastic member 16 is gradually compressed. When the latch 13 moves to a position disengaged from the first locking surface 1101, the first connecting rod 12 is rotated, and the first connecting rod 12 drives the latch 13 to rotate with the shaft 15 as the rotation axis. The latch 13 abuts against the unlocking surface 1102. At this time, the button 14 is released and the button 14 is reset to its initial state.

[0044] In order to better position the first joint assembly 1 in the locked state, as Figure 4 As described above, a positioning groove 1103 is provided on the side where the latch 13 of this embodiment abuts against the first locking surface 1101, and a positioning rib 131 corresponding to the positioning groove 1103 is provided on the first locking surface 1101. When the latch 13 abuts against the first locking surface 1101, the positioning rib 131 is located in the positioning groove 1103. Figure 3 As shown, when the first joint assembly 1 is in a locked state, the positioning rib 131 is located in the positioning groove 1103. When the button 14 is pressed, the button 14 first pushes the latch 13 and the first connecting rod 12 to rotate a small angle and the two latches 13 move away from each other. When the positioning rib 131 is disengaged from the positioning groove 1103, the positioning rib 131 abuts against the first locking surface 1101. Figure 4As shown, the button 14 is continuously pressed, and the button 14 pushes the two latches 13 to continue to move in a direction 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, and then the first connecting rod 12 is rotated, as shown in FIG. Figure 6 As shown, the first connecting rod 12 can drive the latch pin 13 to rotate, the latch pin 13 abuts against the unlocking surface 1102 on the first connecting seat, and the latch pin 13 slides along the unlocking surface 1102 .

[0045] When the button 14 is in a pressed state, the first connecting rod 12 is first rotated until a latch 13 matched with the first connecting rod 12 abuts against an unlocking surface 1102 on the first joint seat 11. Figure 5 As shown, since the other first link 12 is still abutted against the vertical side of the button 14, rotating the other first link 12 at this time can still rotate the other pin 13 that cooperates with the first link 12 to a position abutting against the other unlocking surface 1102, so that the first joint assembly 1 is in an unlocked state.

[0046] In order to ensure that the button 14 moves in the set direction, Figure 7 As shown, the button 14 of this embodiment is provided with a limiting boss 141, and the first joint seat 11 is provided with a limiting groove 1104, which extends along the sliding direction of the button 14. When the button 14 is subjected to external force and moves toward the inside of the first joint seat 11, the limiting boss 141 can slide in the limiting groove 1104.

[0047] like Figure 1 and Figures 8 to 11 As shown, the folding bed of this embodiment also includes a second joint assembly 2, which includes a second joint seat 21, two locking rods 22, a second elastic member 23, two second connecting rods 24 and a handheld member 25, one end of each locking rod 22 is rotatably connected to the second joint seat 21, a second locking surface 2201 is provided on the locking rod 22, two ends of the second elastic member 23 are respectively connected to the two locking rods 22, the two second connecting rods 24 are respectively arranged at the two opposite ends of the second joint seat 21, and each second connecting rod 24 is connected to the second joint seat 2 1 is rotatably connected, each second connecting rod 24 can abut against the second locking surface 2201 of a locking rod 22 to put the second joint assembly 2 in a locked state, and the hand piece 25 is respectively connected to the other ends of the two locking rods 22. When the hand piece 25 is lifted upward, the two locking rods 22 move toward a direction close to each other and the second elastic member 23 is in a compressed state, and the second connecting rod 24 is separated from the locking rod 22; when the hand piece 25 is released, the second elastic member 23 pushes the two locking rods 22 to move in a direction away from each other to reset the locking rods 22.

[0048] Specifically, the handheld piece 25 of the present embodiment is a pull rope, and the connection position between the second connecting rod 24 and the second joint seat 21 is located at one end of the second connecting rod 24 close to the locking rod 22. When the handheld piece 25 is lifted upward, the second joint seat 21 moves upward with the handheld piece 25. Under the action of gravity, the two second connecting rods 24 rotate relative to the second joint seat 21. At the same time, the second elastic piece 23 is in a compressed state, and the second connecting rod 24 gradually disengages from the locking rod 22. When the second connecting rod 24 is completely disengaged from the locking rod 22, the handheld piece 25 is released and the locking rod 22 is reset.

[0049] The existing second joint assembly is limited by its own structure. When the second joint assembly in the locked state is unlocked, the two second connecting rods of the second joint assembly also have the problem that one second connecting rod is in the locked state and the other second connecting rod is in the unlocked state. If the user forcibly unlocks the second connecting rod in the locked state, it will also cause the cloth cover to be crushed. In serious cases, it will also cause the deformation of the entire bed frame, and finally make the folding function of the folding bed ineffective, reducing the service life of the folding bed. When the second joint assembly 2 in the locked state of this embodiment is unlocked, it only needs to pull up the hand piece 25, and the two second connecting rods 24 and the two locking rods 22 will rotate relative to the second joint seat 21. Fig. 9 As shown, at the beginning, the second connecting rod 24 is in contact with the locking rod 22. As the handle 25 drives the locking rod 22 to continue to rotate, the compression amount of the second elastic member 23 gradually increases, and the second connecting rod 24 and the locking rod 22 begin to separate. Fig.10 As shown in FIG. 1 , at this time, since the second connecting rod 24 is not hindered by the locking rod 22, the second connecting rod 24 can be rotated to a nearly vertical position. When the second connecting rod 24 is completely separated from the locking rod 22, the hand piece 25 is released. Fig.11 As shown, the locking rod 22 is reset, the two second connecting rods are not in contact with the locking rod 22, and the second joint seat 21 is in an unlocked state.

[0050] like Fig.11 As shown, the lock rod 22 of this embodiment is provided with a second inclined surface 2202 adjacent to the second locking surface 2201. When the second connecting rod 24 is rotated, the second connecting rod 24 can slide along the second inclined surface 2202 of one lock rod 22, and the lock rod 22 moves toward the direction close to the other lock rod 22 until the second connecting rod 24 abuts against the second locking surface 2201. Specifically, the second connecting rod 24 of this embodiment is a hollow rod, the inner wall of the hollow rod can abut against the second locking surface 2201, and the outer wall of the hollow rod can abut against the second inclined surface 2202.

[0051] Since the lock rod 22 is provided with a second inclined surface 2202, when the second joint assembly 2 in the unlocked state is locked, the second connecting rod 24 is rotated. When the outer wall of the second connecting rod 24 abuts against the second inclined surface 2202, the second connecting rod 24 is further rotated. The second connecting rod 24 pushes the lock rod 22 to rotate in the direction of the other lock rod 22, and the second elastic member 23 is compressed until the outer wall of the second connecting rod 24 abuts against the lower end of the second inclined surface 2202. At this time, the second connecting rod 24 is further rotated, and the inner wall of the second connecting rod 24 abuts against the second locking surface 2201 of the lock rod 22. The specific steps of rotating the other second connecting rod 24 are the same as above, until the inner wall of the second connecting rod 24 abuts against the second locking surface 2201 of the other lock rod 22, and the second joint assembly 2 is in the locked state. During the locking process, the two second connecting rods 24 can be rotated at the same time, or one second connecting rod 24 can be rotated first, and then the other second connecting rod 24 can be rotated. The specific operation steps are selected according to actual needs.

[0052] In order to limit the rotation position of the locking rod 22, as Fig.11 As shown, 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. When the second joint assembly 2 is in a locked state, the inner wall of the second connecting rod 24 can abut against the second locking surface 2201, and since the limiting protrusion 221 of the locking rod 22 abuts against the second joint seat 21, the position of the locking rod 22 is relatively fixed, so that the position of the second connecting rod 24 is also relatively fixed.

[0053] Specifically, Figure 1 and Fig.11 As shown, the folding bed of this embodiment also includes four upper connecting parts 3, four foot assemblies 4, two third connecting rods 5 and two support assemblies 6. The number of first joint assemblies 1 is four, and each upper connecting part 3 is rotatably connected to the first connecting rods 12 of the two first joint assemblies 1, and each upper connecting part 3 is fixedly connected to a foot assembly 4. The two second connecting rods 24 of the second joint assembly 2 are rotatably connected to the two foot assemblies 4 set diagonally, and one end of the two third connecting rods 5 is rotatably connected to the other two foot assemblies 4, and the other end of the third connecting rod 5 is rotatably connected to the second joint seat 21, and one end of the two support assemblies 6 is rotatably connected to the second joint seat 21, and the other end can abut against the ground to support the folding bed. The upper connecting parts 3, the foot assemblies 4 and the support assemblies 6 are all prior art and can be obtained through external purchase.

[0054] like Fig.12As shown, 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 height of the second joint seat 21 is higher than that of the folding bed in the unfolded state. When the folding bed in the folded state is unfolded, the four upper connecting members 3 are pulled outward, the height of the first joint seat 11 gradually increases, and the height of the second joint seat 21 gradually decreases. Without pressing the button 14, the first joint assembly 1 and the second joint assembly 2 gradually change from the unlocked state to the locked state.

[0055] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A folding bed, characterized in that: The invention comprises a first joint component (1), wherein the first joint component (1) comprises: A first joint seat (11), wherein the first joint seat (11) is provided with a first locking surface (1101) and two unlocking surfaces (1102), and the two unlocking surfaces (1102) are arranged opposite to each other; Two first connecting rods (12), the two first connecting rods (12) being respectively arranged at two opposite ends of the first joint seat (11), and each of the first connecting rods (12) being rotatably connected to the first joint seat (11); Two latches (13), the two latches (13) being respectively arranged corresponding to the two first connecting rods (12), each of the latches (13) being capable of rotating with the first connecting rod (12) and moving along the length direction of the first connecting rod (12), and the two latches (13) being capable of abutting against the first locking surface (1101) so that the first joint assembly (1) is in a locked state; A button (14) is arranged on the first joint seat (11), and the button (14) is configured to move toward the inside of the first joint seat (11) when pressed by an external force, and the button (14) simultaneously pushes the two latches (13) to move in directions away from each other until the latches (13) are disengaged from the first locking surface (1101), and when the first connecting rod (12) is rotated, each of the latches (13) can slide along one of the unlocking surfaces (1102), and the button (14) is further configured to be reset when the external force is removed; two first inclined surfaces (140) are provided on the button (14), and the two first inclined surfaces (140) are respectively arranged corresponding to the two latches (13), and when the button (14) is pressed, the latches (13) can slide along the first inclined surfaces (140) to the lower end of the first inclined surfaces (140); The unlocking surface (1102) is a first curved surface, the end surface of the latch pin (13) abutting against the first curved surface is a second curved surface, the second curved surface can cooperate with the first curved surface, and the two unlocking surfaces (1102) form an eight-shaped surface; A positioning groove (1103) is provided on one of the first locking surfaces (1101) and one of the first locking surfaces (1101), and a positioning convex rib (131) corresponding to the positioning groove (1103) is provided on the other side of the latch pin (13) abutting against the first locking surface (1101); when the latch pin (13) abuts against the first locking surface (1101), the positioning convex rib (131) is located in the positioning groove (1103).

2. The folding bed according to claim 1, characterized in that: The latch (13) is provided with a sliding groove (130) arranged along its length direction. The first joint assembly (1) further comprises: Two rotating shafts (15), each of the rotating shafts (15) being capable of sliding along the sliding groove (130) of one of the latch pins (13), and each of the rotating shafts (15) being arranged to penetrate one of the first connecting rods (12) and one of the sliding grooves (130); Two first elastic members (16), each of which is disposed in one of the slide grooves (130), one end of the first elastic member (16) being connected to the rotating shaft (15), and the other end of the first elastic member (16) being in contact with the latch (13), and the first elastic member (16) and the rotating shaft (15) being distributed in sequence in a direction away from the button (14).

3. The folding bed according to claim 1, characterized in that: The folding bed further comprises a second joint assembly (2), wherein the second joint assembly (2) comprises: A second joint seat (21); Two locking rods (22), one end of each locking rod (22) being rotatably connected to the second joint seat (21), and a second locking surface (2201) being provided on the locking rod (22); a second elastic member (23), wherein two ends of the second elastic member (23) are respectively connected to the two locking rods (22); two second connecting rods (24), the two second connecting rods (24) being respectively arranged at two opposite ends of the second joint seat (21), each second connecting rod (24) being rotatably connected to the second joint seat (21), and each second connecting rod (24) being capable of abutting against the second locking surface (2201) of one of the locking rods (22) so that the second joint assembly (2) is in a locked state; The hand piece (25) is connected to the other ends of the two locking rods (22) respectively. When the hand piece (25) is pulled upward, the two locking rods (22) move toward each other and the second elastic member (23) is in a compressed state, and the second connecting rod (24) is separated from the locking rods (22). When the hand piece (25) is released, the second elastic member (23) pushes the two locking rods (22) to move toward a direction away from each other so that the locking rods (22) are reset.

4. The folding bed according to claim 3, characterized in that: The locking rod (22) is provided with a second inclined surface (2202) adjacent to the second locking surface (2201); 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 in a direction approaching the other locking rod (22) until the second connecting rod (24) abuts against the second locking surface (2201).

5. The folding bed according to claim 4, characterized in that: The second connecting rod (24) is a hollow rod, the inner wall of the hollow rod can abut against the second locking surface (2201), and the outer wall of the hollow rod can abut against the second inclined surface (2202).

6. The folding bed according to claim 3, characterized in that: 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).

7. The folding bed according to claim 3, characterized in that: The folding bed further comprises four upper connecting members (3) and four foot assemblies (4), the number of the first joint assemblies (1) being four, each of the upper connecting members (3) being rotatably connected to two of the first joint assemblies (1), and each of the upper connecting members (3) being connected to one of the foot assemblies (4), and two of the foot assemblies (4) arranged diagonally being rotatably connected to two of the second connecting rods (24).

8. The folding bed according to claim 7, characterized in that: The folding bed further comprises two third connecting rods (5), one end of each of the third connecting rods (5) being rotatably connected to one of the foot assemblies (4), and the other end of each of the third connecting rods (5) being rotatably connected to the second joint seat (21).

9. The folding bed according to claim 1, characterized in that: The button (14) is provided with a limiting boss (141), and the first joint seat (11) is provided with a limiting groove (1104); when the button (14) is subjected to an external force and moves toward the inside of the first joint seat (11), the limiting boss (141) can slide in the limiting groove (1104).

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