Folding bed and folding method

Abstract

This invention relates to a folding bed and a folding method. The folding bed includes: multiple mounting sleeves; armrest assemblies are provided between adjacent mounting sleeves; the armrest assemblies include: joint connectors; two first sliding grooves are symmetrically provided near the upper part of the joint connectors, the distance between the two first sliding grooves gradually increases from top to bottom; two upper rails are provided and located on both sides of the joint connectors; a first guide pin is provided at the end of the two upper rails that is close to each other; the first guide pin is embedded and can slide along the first sliding groove; a first fixing pin is provided on the body of the two upper rails; the first fixing pin is embedded in a first fixing hole on the joint connector; a connecting locking plate is provided inside the joint connector; the upper part of the connecting locking plate is provided with a positioning groove, the positioning groove including a connected locking groove and a movable groove; the lower part of the connecting locking plate is hinged to the second fixing hole on the surface of the joint connector through a second fixing pin; two lower rails are hinged at the end that is close to each other to the lower end of the connecting locking plate.

Description

Technical Field

[0001] This invention relates to the field of folding bed design, and in particular to a folding bed and a folding method. Background Technology

[0002] Existing cribs are primarily used to confine infants inside, thereby providing a safe play space and sleep space.

[0003] The existing children's bed frame is extremely inconvenient to disassemble after use. It requires using a screwdriver to remove the bolts at the frame joints, and the removed bolts and frame joints are easily lost during storage, affecting the normal installation and use of the play bed later.

[0004] To address this issue, folding away unused children's beds could be considered. However, existing foldable children's beds often exhibit stiff and awkward angular deformation between components when folded, requiring considerable effort to compress the bed frame and easily resulting in breakage or wear at the connecting parts. Furthermore, the unfolded state of the bed is not stable enough, frequently wobbling or easily deforming, compromising safety. Summary of the Invention

[0005] Therefore, it is necessary to provide a folding bed and a folding method to address at least some of the problems mentioned above.

[0006] A folding bed includes: a plurality of mounting sleeves, with armrest assemblies provided between adjacent mounting sleeves, the armrest assemblies comprising:

[0007] The joint connector has two first sliding grooves symmetrically arranged near its upper part, and the distance between the two first sliding grooves gradually increases from top to bottom.

[0008] The upper frame has two rods located on both sides of the joint connector. A first guide pin is provided at the end of the two upper frame rods that is close to each other. The first guide pin is embedded and can slide along the first groove. A first fixing pin is provided on the rod body of each upper frame rod, and the first fixing pin is embedded in a first fixing hole on the joint connector.

[0009] A connecting locking plate is disposed inside the joint connector. The upper part of the connecting locking plate is provided with a positioning groove, which includes a locking groove and a movable groove connected together. The lower part of the connecting locking plate is hinged to the second fixing hole on the surface of the joint connector by a second fixing pin.

[0010] The lower retaining rods are provided in two sections and located on both sides of the joint connector. The ends of the two lower retaining rods that are close to each other are hinged to the lower end of the connecting locking piece.

[0011] The ends of the upper and lower retaining rods that are far apart from each other are rotatably connected to the mounting sleeve.

[0012] When the folding bed is unfolded, the first guide pin is placed in the locking groove and simultaneously placed at the top of the first slide. When the folding bed is folded, the connecting lock plate rotates around the second fixing pin, causing the positioning groove to slide relative to the first guide pin until the first guide pin is placed in the movable groove. Thus, the first guide pin is unlocked and moves along the first slide to the bottom of the first slide under the continued rotational drive of the connecting lock plate.

[0013] In some embodiments, the connecting locking piece is C-shaped, with its opening facing the mounting sleeve connected to the other end of the upper and lower rails.

[0014] The locking groove is positioned on a circle with the second fixing pin as the center and the length of the line connecting the second fixing pin and the first guide pin as the radius.

[0015] The movable groove is perpendicular to the locking groove, so that the positioning groove is L-shaped and the opening of the positioning groove faces the mounting sleeve, thereby causing the edge of the movable groove to exert a thrust on the first guide pin along the extension direction of the first slide groove, so as to push the first guide pin to move within the first slide groove.

[0016] In some embodiments, the first groove is arc-shaped and is formed on the joint connecting piece with the first fixing pin as the center.

[0017] In some embodiments, the included angle formed by the lines connecting the two ends of the first groove to the first fixing pin is 90°.

[0018] In some embodiments, when the first guide pin moves along the first slide groove to the bottom of the first slide groove under the continued rotational drive of the connecting locking piece, the lower circumference rod is in a folded state and located on the outer surface of the joint connector.

[0019] In some embodiments, each mounting sleeve is connected to a support base via a vertical rod at its lower end, and each support base is hinged to an unlocking base located in the middle of the lower part of the bed frame via a connecting rod assembly.

[0020] The unlocking base includes an upper unlocking base and a lower unlocking base that are inserted vertically, and the connecting rod assembly includes a hinged first connecting rod and a second connecting rod.

[0021] The outer end of the first connecting rod is hinged to the support base, and the inner end of the first connecting rod is hinged to the upper unlocking base. One end of the second connecting rod is hinged to the lower unlocking base, and the other end is hinged to the rod body of the first connecting rod.

[0022] In some embodiments, the surface of the upper unlocking base is provided with a handle.

[0023] A method for folding a folding bed includes the following steps:

[0024] When the folding bed is unfolded, the first guide pins at the ends of the two upper rails that are close to each other are respectively placed in the two locking slots of the connecting lock plate, and the two first guide pins are simultaneously placed at the top of the two first sliding grooves symmetrically arranged near the upper part of the joint connector.

[0025] When the folding bed is folded, the connecting locking plate rotates around the second fixing pin, which is hinged to the second fixing hole on the surface of the joint connector. This causes the positioning groove of the connecting locking plate to slide relative to the first guide pin until the first guide pin is placed in the movable groove, thereby unlocking the first guide pin.

[0026] Under the continued rotational drive of the connecting locking piece, the first guide pin moves along the first slide groove to the bottom of the first slide groove, thereby causing the upper frame rod to reach the folded state, and at the same time the lower frame rod reaches the folded state, the joint connector gradually falls down, and the folding bed is folded up.

[0027] The above-mentioned folding bed and folding method have at least the following beneficial technical effects:

[0028] (1) In this embodiment, the upper frame rod and the joint connector are slidably connected, and the lower frame rod and the joint connector are not directly connected. When the bed is unfolded, the upper frame rod is locked in the unfolded state by the positioning groove on the connecting lock plate, thereby eliminating the shaking or easy deformation of the shape after unfolding, which can ensure safe use. When folding, the connecting lock plate can be unlocked by rotating the upper frame rod, and then continue to rotate and drive the upper frame rod to rotate to the folded state, while the joint connector reaches the lowest position and the lower frame rod also reaches the folded state.

[0029] (2) This embodiment can achieve a firm lock on the unfolded state of the bed, and the further rotation after the connecting lock plate is unlocked ensures that the upper and lower rails of the folding bed have sufficient clearance and space for movement during the unfolding and folding process, thus making the deformation of the bed more flexible. Since the bed is easy to deform, it does not require a lot of effort to compress the bed, and it can also avoid the rods from breaking or the connected parts from being subjected to large forces. Attached Figure Description

[0030] Figure 1 A schematic diagram of the unfolding of a folding bed according to an embodiment of the present invention. Figure 2

[0031] Figure 2 for Figure 1 Enlarged at point A in the image Figure 2

[0032] Figure 3 for Figure 2 perspective Figure 2

[0033] Figure 4 for Figure 1 A diagram showing the folding bed folded down until the first guide pin is unlocked. Figure 2

[0034] Figure 5 for Figure 4 Enlarged perspective at point B Figure 2

[0035] Figure 6 of Figure 1 The folding bed in its folded state Figure 2

[0036] Figure 7 for Figure 6 Enlarged view of the armrest components Figure 2

[0037] In the figure,

[0038] 10. Mounting sleeve two; 11. Third slide groove two; 12. Fourth guide pin two

[0039] 20. Joint connector two; 21. First slide groove two

[0040] 30. Upper band 2; 31. First guide pin 2; 32. First fixing pin 2; 33. Fifth slide groove 2

[0041] 40. Lower band rod 2; 41. Third guide pin 2; 42. Fourth slide groove 2; 43. Sixth guide pin 2

[0042] 50. Connecting locking piece 2 51a, locking groove 2 51b, movable groove 2 52, second fixing pin 2

[0043] 60. Pole Two

[0044] 70. Support base two

[0045] 80. Connecting rod assembly two; 81. First connecting rod two; 82. Second connecting rod two

[0046] 90. Unlock base two 91. Upper unlock base two 91a. Handle two 92. Lower unlock base. Detailed Implementation

[0047] The invention will now be further described with reference to the accompanying drawings.

[0048] To facilitate understanding of the present invention, various embodiments as defined by the claims will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings, which include various specific details to aid this understanding, but these details should be considered merely exemplary. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Accordingly, those skilled in the art will recognize that variations and modifications can be made to the various embodiments described herein without departing from the scope of the invention as defined by the appended claims. Furthermore, descriptions of well-known functions and constructions may be omitted for clarity and brevity.

[0049] It will be apparent to those skilled in the art that the following description of various embodiments of the invention is provided for illustrative purposes only and is not intended to limit the invention as defined by the appended claims.

[0050] Throughout the specification and claims of this application, the words “comprising” and “including,” as well as variations thereof, such as “comprising of” and “including,” mean “including but not limited to,” and are not intended to exclude other components, elements, or steps. Features, elements, or characteristics described in connection with a particular aspect, embodiment, or example of the invention are to be understood as applicable to any other aspect, embodiment, or example described herein, unless incompatible therewith.

[0051] It should be understood that the singular forms “a,” “an,” and “the” include plural references unless the context explicitly specifies otherwise. The expressions “comprising” and / or “may comprise” as used in this invention are intended to indicate the presence of a corresponding function, operation, or element, and are not intended to limit the presence of one or more functions, operations, and / or elements. Furthermore, in this invention, the terms “comprising” and / or “having” are intended to indicate the presence of the features, quantities, operations, elements, and components disclosed in the applications, or combinations thereof. Therefore, the terms “comprising” and / or “having” should be understood as implying the additional possibility of one or more other features, quantities, operations, elements, and components, or combinations thereof.

[0052] In this invention, the expression "or" includes any or all combinations of the words listed together. For example, "A or B" can include either A or B, or it can include both A and B.

[0053] It should be understood that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or there may be an intervening element.

[0054] The terms "up," "down," "left," and "right" mentioned in the text are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms (such as those defined in common dictionaries) should be interpreted as having the meaning consistent with the relevant field and the context of this specification, and should not be interpreted in an idealized or overly formal sense unless expressly defined herein. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0056] like Figures 1-3 As shown, in one embodiment of the present invention, a folding bed is provided, comprising: a plurality of mounting sleeves, with armrest assemblies provided between adjacent mounting sleeves, the armrest assemblies comprising:

[0057] The joint connector has two first sliding grooves symmetrically arranged near its upper part, and the distance between the two first sliding grooves gradually increases from top to bottom.

[0058] The upper frame has two rods located on both sides of the joint connector. A first guide pin is provided at the end of the two upper frame rods that is close to each other. The first guide pin is embedded and can slide along the first groove. A first fixing pin is provided on the rod body of each upper frame rod, and the first fixing pin is embedded in a first fixing hole on the joint connector.

[0059] A connecting locking plate is disposed inside the joint connector. The upper part of the connecting locking plate is provided with a positioning groove, which includes a locking groove and a movable groove connected together. The lower part of the connecting locking plate is hinged to the second fixing hole on the surface of the joint connector by a second fixing pin.

[0060] The lower retaining rods are provided in two sections and located on both sides of the joint connector. The ends of the two lower retaining rods that are close to each other are hinged to the lower end of the connecting locking piece.

[0061] The ends of the upper and lower retaining rods that are far apart from each other are rotatably connected to the mounting sleeve.

[0062] refer to Figure 3 When the folding bed is unfolded, the first guide pin is positioned in the locking groove, and simultaneously positioned at the top of the first slide groove. Figure 4 and Figure 5When the folding bed is folded, the connecting locking piece rotates around the second fixing pin, causing the positioning groove to slide relative to the first guide pin until the first guide pin is placed in the movable groove. As a result, the first guide pin is unlocked and moves along the first slide to the bottom of the first slide under the continued rotation driving action of the connecting locking piece.

[0063] Specifically, each mounting sleeve is connected to a support base via a vertical pole, and several support bases are connected by a connecting rod assembly. An unlocking base is also provided. Figure 4 and Figure 5 When folding the bed frame, hold the unlocking base and lift it upwards. Multiple support seats simultaneously move towards the unlocking base and retract. At this time, the lower parts of the four uprights are pulled inwards. As the uprights retract inwards, the upper parts of the uprights push the lower frame rod inwards through the mounting sleeve. When the lower frame rod moves inwards, it causes the connecting locking plate to rotate around the second fixing pin, causing the positioning groove to slide relative to the first guide pin until the first guide pin is placed in the movable groove, thereby unlocking the first guide pin (e.g., ...). Figure 5 Second Reference Figure 6 and Figure 7 After unlocking, the connecting locking piece continues to rotate around the second fixing pin under the pushing action of the lower frame rod. Simultaneously, the rotating connecting locking piece drives the first guide pin in the movable groove to move along the first slide groove to the bottom of the first slide groove, thus bringing the upper frame rod to a folded state. At the same time, the lower frame rod is also pushed to a folded state by the upright rod, and the joint connector gradually falls down.

[0064] When the unlocking base is raised to its highest position, the first guide pin can slide to the bottom of the first slide groove, the upper and lower rails reach a fully folded state, the joint connectors also lower to their lowest position, and the entire bed is folded and retracted (as shown in the image). Figure 6 ).

[0065] In this embodiment, the upper frame rod and the joint connector are slidably connected, and the lower frame rod and the joint connector are not directly connected. When the bed is unfolded, the upper frame rod is locked in the unfolded state through the positioning groove on the connecting lock plate, thereby eliminating the shaking or easy deformation after unfolding, which can ensure safe use. When folding, the connecting lock plate can be unlocked by rotating the upper frame rod, and then continue to rotate and drive the upper frame rod to rotate to the folded state, so that the joint connector reaches the lowest position and the lower frame rod also reaches the folded state.

[0066] This embodiment can achieve a secure lock on the unfolded state of the bed, and the further rotation after the locking plate is unlocked ensures that the upper and lower frame rods of the folding bed have sufficient clearance and space for movement during the unfolding and folding process, thus making the bed more flexible in deformation. Because the bed is easy to deform, it does not require a lot of effort to compress the bed, and it also avoids the possibility of the rods breaking or the connected parts wearing down due to excessive force.

[0067] refer to Figure 4 and Figure 5 In some embodiments, the connecting locking piece is C-shaped, with its opening facing the mounting sleeve connected to the other end of the upper and lower rails.

[0068] The locking groove is positioned on a circle with the second fixing pin as the center and the length of the line connecting the second fixing pin and the first guide pin as the radius.

[0069] The movable groove is perpendicular to the locking groove, so that the positioning groove is L-shaped and the opening of the positioning groove faces the mounting sleeve, thereby causing the edge of the movable groove to exert a thrust on the first guide pin along the extension direction of the first slide groove, so as to push the first guide pin to move within the first slide groove.

[0070] In this embodiment, the connecting locking piece is V-shaped, which ensures that the inward thrust of the lower frame rod during rotation can be efficiently transmitted to the end of the connecting locking piece that contacts the first guide pin.

[0071] Because the locking groove is placed on a circle with the second fixing pin as the center and the length of the line connecting the second fixing pin and the first guide pin as the radius, and the positioning groove is an L-shape with a bend, the first guide pin can slide smoothly from the locking groove into the movable groove when the connecting lock plate starts to rotate, thereby unlocking. Because the movable groove is perpendicular to the locking groove, when the connecting lock plate rotates further after unlocking, the edge of the movable groove can apply a thrust along the extension direction of the first slide groove to the first guide pin, so as to push the first guide pin to move in the first slide groove. Since the thrust is basically along the extension direction of the first slide groove, it will be used entirely to drive the first guide pin to move, thereby ensuring the maximum force transmission efficiency and making the folding operation more labor-saving.

[0072] refer to Figure 5 In some embodiments, the first groove is arc-shaped and is formed on the joint connecting piece with the first fixing pin as the center.

[0073] Specifically, since the first slide is arc-shaped, when the connecting lock plate rotates, it can drive the first guide pin in the movable groove to move smoothly along the first slide to the bottom of the first slide, so that the upper rod can be folded smoothly, and the folding process can be carried out normally and smoothly without jamming or wear between the first guide pin and the first slide.

[0074] refer to Figure 5 In some embodiments, the included angle formed by the lines connecting the two ends of the first slide groove to the first fixing pin is 90°. That is, the arc of the first slide groove is 90°, so that the upper frame rod is in a horizontal and vertical state before and after folding, respectively, ensuring that the bed can be fully unfolded and folded, with the smallest storage volume and maximum space saving.

[0075] refer to Figure 6 and Figure 7 In some embodiments, when the first guide pin moves along the first slide groove to the bottom of the first slide groove under the continued rotational drive of the connecting locking piece, the lower circumference rod is in a folded state and located on the outer surface of the joint connector.

[0076] In this embodiment, the lower frame rod is located on the outer surface of the joint connector when folded, so that the lower frame rod will not interfere with the joint connector when folded. The lower frame rod can achieve the maximum folding angle in the plane, ensuring that the bed can be completely folded to the smallest volume state. The volume after storage is minimized, which can save the most space.

[0077] refer to Figure 4 In some embodiments, each of the mounting sleeves is connected to a support base via a vertical rod, and each support base is hinged to an unlocking base located in the middle of the lower part of the bed via a connecting rod assembly.

[0078] The unlocking base includes an upper unlocking base and a lower unlocking base that are inserted vertically, and the connecting rod assembly includes a hinged first connecting rod and a second connecting rod.

[0079] The outer end of the first connecting rod is hinged to the support base, and the inner end of the first connecting rod is hinged to the upper unlocking base. One end of the second connecting rod is hinged to the lower unlocking base, and the other end is hinged to the rod body of the first connecting rod.

[0080] When folding the bed frame, hold the upper unlocking base and lift it upwards to separate the upper and lower unlocking bases and move them upwards simultaneously. As the upper and lower unlocking bases move upwards, they will simultaneously cause the inner end of the first connecting rod and the second connecting rod to swing upwards. At this time, the outer end of each first connecting rod will pull a support seat closer to the unlocking base and retract it. Then, the support seats at the four corners will drive the lower part of the four uprights to retract inwards, and the folding action will begin.

[0081] In this embodiment, the upper and lower unlocking bases are locked and separated by a plug-in connection, which is simple in structure. During operation, the upper unlocking base can be lifted upwards to unlock. The first connecting rod and the second connecting rod are hinged together and respectively hinged to the upper and lower unlocking bases, which facilitates linkage and enables the flexible unfolding and folding of the bed.

[0082] refer to Figure 4 In some embodiments, the surface of the upper unlocking base is provided with a handle. The handle facilitates gripping during folding, thereby driving the upper unlocking base upwards and separating it from the lower unlocking base.

[0083] In the above description, although expressions such as "first" and "second" may be used to describe various elements of the invention, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of corresponding elements. The above expressions are used to distinguish one component from another.

[0084] The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. Singular expressions include plural expressions unless there are significant differences in context or approach between them.

[0085] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

[0086] Those skilled in the art will understand that the technical features of the above embodiments can be omitted, added, or combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as the combination of these technical features does not contradict each other, and simple transformations that those skilled in the art can conceive of, as well as structural transformations that adapt to and functionally modify the prior art, should be considered within the scope of this specification.

[0087] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that although the present invention has been shown and described with reference to various embodiments, those skilled in the art can make various modifications and improvements in form and detail without departing from the concept of the present invention, and without departing from the scope of the invention as defined by the appended claims. All such modifications and improvements fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A folding bed, characterized in that, include: Multiple mounting sleeves, with handrail assemblies provided between adjacent mounting sleeves, the handrail assemblies comprising: The joint connector has two first sliding grooves symmetrically arranged near the upper part, and the distance between the two first sliding grooves gradually increases from top to bottom; The upper frame has two upper frame rods located on both sides of the joint connector. The two upper frame rods are provided with a first guide pin at their closest ends. The first guide pin is embedded and can slide along the first groove. The upper frame rod is provided with a first fixing pin, which is embedded in the first fixing hole on the joint connector. A connecting locking plate is provided inside the joint connector. The upper part of the connecting locking plate is provided with a positioning groove, which includes a locking groove and a movable groove connected together. The lower part of the connecting locking plate is hinged to the second fixing hole on the surface of the joint connector through a second fixing pin. The lower frame has two members located on both sides of the joint connector, with the ends of the two lower frame members close to each other hinged to the lower end of the connecting locking piece; The ends of the upper and lower surround rods that are far apart from each other are rotatably connected to the mounting sleeve; When the folding bed is unfolded, the first guide pin is placed in the locking groove and simultaneously placed at the top of the first slide. When the folding bed is folded, the connecting lock plate rotates around the second fixing pin, causing the positioning groove to slide relative to the first guide pin until the first guide pin is placed in the movable groove. Thus, the first guide pin is unlocked and moves along the first slide to the bottom of the first slide under the continued rotational drive of the connecting lock plate. The connecting locking piece is C-shaped, and the opening faces the mounting sleeve connected to the other end of the upper and lower surround rods; The locking groove is placed on a circle with the second fixing pin as the center and the length of the line connecting the second fixing pin and the first guide pin as the radius; The movable groove is perpendicular to the locking groove, so that the positioning groove is L-shaped and the opening of the positioning groove faces the mounting sleeve, thereby causing the edge of the movable groove to apply a thrust to the first guide pin along the extension direction of the first slide groove, so as to push the first guide pin to move in the first slide groove. Each of the mounting sleeves is connected to a support base via a vertical pole, and each of the support bases is hinged to an unlocking base located in the middle of the lower part of the bed via a connecting rod assembly. The unlocking base includes an upper unlocking base and a lower unlocking base that are inserted into each other, and the connecting rod group includes a hinged first connecting rod and a second connecting rod; The outer end of the first connecting rod is hinged to the support base, and the inner end of the first connecting rod is hinged to the upper unlocking base; one end of the second connecting rod is hinged to the lower unlocking base, and the other end is hinged to the rod body of the first connecting rod.

2. The folding bed according to claim 1, characterized in that, The first groove is arc-shaped and is formed on the joint connecting piece with the first fixing pin as the center.

3. The folding bed according to claim 1, characterized in that, The included angle formed by the lines connecting the two ends of the first groove to the first fixing pin is 90°.

4. The folding bed according to claim 1, characterized in that, When the first guide pin moves along the first slide groove to the bottom of the first slide groove under the continued rotational drive of the connecting locking piece, the lower circumference rod is in a folded state and located on the outer surface of the joint connector.

5. The folding bed according to claim 1, characterized in that, The surface of the upper unlocking base is provided with a handle.

6. A folding method for a folding bed according to claim 1, characterized in that, Includes the following steps: When the folding bed is unfolded, the first guide pins set at the ends of the two upper rails that are close to each other are placed in the two locking slots of the connecting lock plate, and the two first guide pins are simultaneously placed at the top of the two first sliding grooves symmetrically set near the upper part of the joint connector. When the folding bed is folded, the connecting locking plate rotates around the second fixing pin that is hinged to the second fixing hole on the surface of the joint connector, so that the positioning groove of the connecting locking plate slides relative to the first guide pin until the first guide pin is placed in the movable groove, thereby unlocking the first guide pin. Under the continued rotational drive of the connecting locking piece, the first guide pin moves along the first slide groove to the bottom of the first slide groove, thereby causing the upper frame rod to reach the folded state, and at the same time the lower frame rod reaches the folded state, the joint connector gradually falls down, and the folding bed is folded up.

Images