Folding bed

Abstract

The utility model discloses a folding bed, folding bed includes a plurality of vertical pole, upper locking mechanism and lower locking mechanism, a plurality of vertical pole includes adjacent first vertical pole and second vertical pole, and upper locking mechanism connects the upper end of first vertical pole and the upper end of second vertical pole, and lower locking mechanism connects the lower end of first vertical pole and the lower end of second vertical pole, and lower locking mechanism is configured as drive upper locking mechanism switches between locking state and unlocking state, and upper locking mechanism includes first connecting rod, second connecting rod, third connecting rod, fourth connecting rod and first folding piece, and the both ends of first connecting rod are rotatably connected first vertical pole and first folding piece respectively, and the both ends of second connecting rod are rotatably connected second vertical pole and first folding piece respectively, and the both ends of third connecting rod are rotatably connected first vertical pole and first folding piece respectively, and the both ends of fourth connecting rod are rotatably connected second vertical pole and first folding piece respectively, and transmission assembly is connected between third connecting rod and fourth connecting rod, and transmission assembly is used for driving third connecting rod and fourth connecting rod synchronous rotation.

Description

Technical Field

[0001] This utility model relates to the field of furniture and household products technology, and in particular to a folding bed. Background Technology

[0002] A crib is an essential piece of furniture in families with infants, designed to provide a comfortable and safe space for sleeping and playing. Cribs typically consist of a foldable frame and a mattress placed on top. The foldable frame makes it easy to store and fold when the crib is not in use or for transport. However, some cribs have complex folding structures, hindering quick folding and making the process cumbersome and inconvenient for users. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a folding bed with an upper locking mechanism and a lower locking mechanism. By driving the lower locking mechanism, the state of the upper locking mechanism can be changed, thereby simplifying the folding or unfolding operation of the folding bed and providing convenience for users.

[0004] According to an embodiment of the present invention, a folding bed has a usable space and includes a plurality of uprights distributed around the usable space. The folding bed has a folded state and an unfolded state. The plurality of uprights includes adjacent first and second uprights, which extend vertically and are spaced apart along a first horizontal direction. The folding bed further includes: an upper locking mechanism connecting the upper ends of the first and second uprights, which has a locked state and an unlocked state; and a lower locking mechanism connecting the lower ends of the first and second uprights, configured to drive the first and second uprights away from and towards each other, and configured to drive the upper locking mechanism to switch between the locked and unlocked states. The locking mechanism includes a first link, a second link, a third link, a fourth link, and a first retractable member. The two ends of the first link are rotatably connected to the first upright and the first retractable member, respectively. The two ends of the second link are rotatably connected to the second upright and the first retractable member, respectively. The two ends of the third link are rotatably connected to the first upright and the first retractable member, respectively. The two ends of the fourth link are rotatably connected to the second upright and the first retractable member, respectively. A transmission assembly is connected between the third link and the fourth link. The transmission assembly drives the third link and the fourth link to rotate synchronously. In the locked state, the first retractable member restricts the rotation of the first link and the second link. In the unlocked state, the first retractable member releases the restriction on the rotation of the first link and the second link.

[0005] According to an embodiment of the present invention, the folding bed includes an upper locking mechanism located at the upper ends of multiple uprights and a lower locking mechanism located at the lower ends of multiple uprights. The lower locking mechanism can both drive the multiple uprights to move away from each other and to move closer together, and can also drive the upper locking mechanism to switch between locked and unlocked states, simplifying the unfolding and folding steps and providing convenience for users. Furthermore, the upper locking mechanism also includes multiple connecting rods, a first folding member, and a transmission assembly. The transmission assembly drives a portion of the connecting rods to rotate synchronously, and then drives another portion of the connecting rods to rotate synchronously through the first folding member connected to the rotating connecting rods. This improves the stability and consistency of movement during unfolding and folding, thereby improving the unfolding and folding effect of the folding bed while simplifying the unfolding and folding steps.

[0006] In addition, the folding bed according to the above embodiments of the present invention may also have the following additional technical features:

[0007] In some examples of this utility model, the transmission component is disposed on the first closing member.

[0008] In some examples of this utility model, the transmission assembly includes a first gear and a second gear. The first gear is rotatably disposed on the first retaining member and is connected to the third connecting rod. The second gear is rotatably disposed on the first retaining member and is connected to the fourth connecting rod. The first gear and the second gear are connected in a transmission manner and rotate in opposite directions.

[0009] In some examples of this utility model, the transmission assembly further includes a third gear and a fourth gear, the third gear being disposed on the first retractable member, the fourth gear being disposed on the first retractable member, the first gear meshing with the third gear, the second gear meshing with the fourth gear, and the third gear meshing with the fourth gear.

[0010] In some examples of this utility model, the first retractable member is provided with a first pin and a first slide groove. The first slide groove extends around the first pin, and a first positioning groove extending away from the first pin is provided at the first end of the first slide groove. The first connecting rod is provided with a second slide groove and a second pin. The second slide groove extends along the axial direction of the first connecting rod. The first pin is rotatably and slidably disposed in the second slide groove, and the second pin is rotatably and slidably disposed in the first slide groove. In the locked state, the second pin is located in the first positioning groove; in the unlocked state, the second pin is located in the first slide groove and can slide along the first slide groove toward the second end of the first slide groove.

[0011] In some examples of this utility model, the distance between the first groove and the first pin gradually decreases and then gradually increases in the direction from the first end to the second end.

[0012] In some examples of this utility model, the first link and the third link are parallel to each other, and the second link and the fourth link are parallel to each other.

[0013] In some examples of this utility model, the lower locking mechanism has an unfolded state and a folded state. When the lower locking mechanism switches from the unfolded state to the folded state, it drives the first upright and the second upright to move away from each other and then close together.

[0014] In some examples of this utility model, the lower locking mechanism includes a second retractable member, a fifth connecting rod, and a sixth connecting rod. The two ends of the fifth connecting rod are rotatably connected to the first upright and the second retractable member, respectively, and the two ends of the sixth connecting rod are rotatably connected to the second upright and the second retractable member, respectively.

[0015] In some examples of this utility model, the second retractable member includes a base and a locking member, the locking member being disposed on and connected to the base, and in the unfolded state, the locking member locking at least one of the fifth link and the sixth link. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the folding bed in some embodiments of the present invention (showing the unfolded state of the folding bed);

[0017] Figure 2 This is a partial structural cross-sectional view of the folding bed in some embodiments of the present invention (showing the first folding member and the transmission assembly);

[0018] Figure 3 This is a partial structural schematic diagram of the folding bed in some embodiments of the present invention (showing the assembly structure of the second folding member with the fifth link, the sixth link and the support rod);

[0019] Figure 4 This is a partial structural assembly diagram of the folding bed in some embodiments of the present invention (showing the second folding component, wherein the resetting component is not shown);

[0020] Figure 5 This is a partial structural cross-sectional view of the folding bed in some embodiments of the present invention (showing the assembly structure of the second folding member with the fifth link, the sixth link and the support rod);

[0021] Figure 6 This is a partial structural cross-sectional view of the folding bed in some embodiments of the present invention (showing the locking structure of the locking member and the fifth link in the unfolded state).

[0022] Figure label:

[0023] 100. Folding bed; 10. First upright; 20. Second upright; 30. Upper locking mechanism; 31. First connecting rod; 302. Second slide groove; 312. Second axle pin; 32. Second connecting rod; 33. Third connecting rod; 34. Fourth connecting rod; 35. First closing component; 351. First axle pin; 301. First slide groove; 303. First positioning groove; 36. Transmission assembly; 361. First gear; 362. Second gear; 363. Third gear; 364. Fourth gear; 40. Lower locking mechanism; 41. Fifth connecting rod; 46. Sixth connecting rod; 420. Second closing component; 42. Base; 421. Locking component; 4210. Mounting hole; 4211. Positioning part; 422. Reset component; 43. Support rod; 51. First corner post; 52. Second corner post. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] Combination Figures 1 to 6 According to an embodiment of the present invention, the folding bed 100 has a usable space and includes multiple uprights distributed around the usable space. The multiple uprights include adjacent first uprights 10 and second uprights 20, which extend vertically and are spaced apart along a first horizontal direction. Specifically, the multiple uprights define the vertical extension distance of the folding bed 100, giving it a certain height. The multiple uprights are spaced apart from each other, thus creating the usable space. When a barrier is installed around the multiple uprights, it can prevent infants and young children from falling off the bed, providing a protective effect and making it suitable for infants and young children. The folding bed 100 has a folded state and an unfolded state, allowing users to unfold it when in use and fold it when not in use, thus facilitating storage and carrying and improving the flexibility of use.

[0026] Combination Figure 1 The folding bed 100 also includes an upper locking mechanism 30 and a lower locking mechanism 40. The upper locking mechanism 30 is connected to the upper end of the first upright 10 and the upper end of the second upright 20, i.e., located at the upper part of the folding bed 100. The upper locking mechanism 30 has a locked state and an unlocked state. The lower locking mechanism 40 is connected to the lower end of the first upright 10 and the lower end of the second upright 20, i.e. located at the lower part of the folding bed 100. The lower locking mechanism 40 is configured to drive the first upright 10 and the second upright 20 to move away from each other and to move closer to each other, and is configured to drive the upper locking mechanism 30 to switch between the locked state and the unlocked state.

[0027] Specifically, when the folding bed 100 is in the unfolded state, the lower locking mechanism 40 drives the first upright 10 and the second upright 20 to move away from each other, creating a usable space between the uprights. At this time, the upper locking mechanism 30 is in the locked state, allowing the folding bed 100 to remain stably in the unfolded state. When the folding bed 100 is in the folded state, the lower locking mechanism 40 drives the first upright 10 and the second upright 20 to move closer together. During this process, the usable space of the folding bed 100 gradually decreases, thus reducing the space occupied by the folding bed 100 and facilitating storage. At this time, the lower locking mechanism 40 can drive the upper locking mechanism 30 to switch from the locked state to the unlocked state, thereby achieving the folding effect. In other words, by simply driving the lower locking mechanism 40, the state of the upper locking mechanism 30 can be changed, thereby simplifying the folding or unfolding operation of the folding bed 100 and providing convenience for users.

[0028] When the folding bed 100 is in the unfolded state, the lower locking mechanism 40 drives the first upright 10 and the second upright 20 to move away from each other, unfolding multiple uprights. The lower locking mechanism 40 then drives the upper locking mechanism 30 to switch from an unlocked state to a locked state. This allows the lower locking mechanism 40 to hold the folding bed 100 in the unfolded state from the bottom, and the upper locking mechanism 30 to hold it in the unfolded state from the top, thus improving the structural stability of the folding bed 100 when unfolded. Similarly, when folding, the lower locking mechanism 40 can simultaneously drive multiple uprights to move closer together and drive the upper locking mechanism 30 to switch from a locked state to an unlocked state, thus achieving the movement of multiple uprights. In this way, the upper locking mechanism 30 and the lower locking mechanism 40 work together to achieve a convenient folding effect and improve stability during unfolding and folding. The lower locking mechanism 40 can drive the upper locking mechanism 30 to lock or unlock, thereby achieving a one-click folding effect, simplifying the folding operation and providing convenience for users.

[0029] Combination Figure 1 and Figure 2 The upper locking mechanism 30 includes a first link 31, a second link 32, a third link 33, a fourth link 34, and a first retracting member 35. The two ends of the first link 31 are rotatably connected to the first upright 10 and the first retracting member 35, respectively. The two ends of the second link 32 are rotatably connected to the second upright 20 and the first retracting member 35, respectively. The two ends of the third link 33 are rotatably connected to the first upright 10 and the first retracting member 35, respectively. The two ends of the fourth link 34 are rotatably connected to the second upright 20 and the first retracting member 35, respectively.

[0030] Specifically, the first retractable member 35 can connect the first connecting rod 31, the second connecting rod 32, the third connecting rod 33, and the fourth connecting rod 34. When the lower locking mechanism 40 drives the first upright rod 10 and the second upright rod 20 to move closer together, the positions of the first upright rod 10 and the second upright rod 20 change, which can drive the first connecting rod 31 and the second connecting rod 32 connected to the first upright rod 10 to rotate relative to the first retractable member 35. The second upright rod 20 can drive the second connecting rod 32 and the fourth connecting rod 34 connected to it to rotate relative to the first retractable member 35. In this way, the lower locking mechanism 40 can drive the first upright rod 10 and the second upright rod 20, and at the same time, the driving force can be transmitted to the first retractable member 35 of the upper locking mechanism 30. When unlocking, the first connecting rod 31 and the second connecting rod 32 can rotate relative to the first retractable member 35 to move closer together, and the third connecting rod 33 and the fourth connecting rod 34 can rotate relative to the first retractable member 35 to move closer together.

[0031] Similarly, when the lower locking mechanism 40 drives the first upright 10 and the second upright 20 away from each other, the first upright 10 and the second upright 20 can drive the first connecting rod 31 and the second connecting rod 32 to unfold, as well as the third connecting rod 33 and the fourth connecting rod 34 to unfold, or remain in a horizontal state. In the locked state, the first retracting member 35 restricts the rotation of multiple connecting rods, and in the unlocked state, multiple connecting rods can rotate relative to the first retracting member 35.

[0032] More specifically, a transmission assembly 36 is connected between the third link 33 and the fourth link 34. The transmission assembly 36 is used to drive the third link 33 and the fourth link 34 to rotate synchronously. The transmission assembly 36 improves the stability of operation when switching the third link 33 and the fourth link 34 between their unfolded and folded states. In addition, since the third link 33 and the fourth link 34 are connected to the first link 31 and the second link 32 through the first retracting member 35, the power transmission can also be transmitted to the first link 31 and the second link 32, so that the first link 31 and the second link 32 move synchronously, thereby improving the overall structural stability and operational stability of the upper locking mechanism 30.

[0033] Therefore, when the lower locking mechanism 40 drives the upper locking mechanism 30 to unlock or lock, the transmission component 36 can improve the stability and consistency of the movement of the upper locking mechanism 30. The first link 31, the second link 32, the third link 33, and the fourth link 34 can move synchronously, thereby achieving a one-click folding effect. In the unfolded state, the limiting member can hold the first rod in the unfolded position, and the transmission component 36 drives the third link 33 and the fourth link 34 to remain in the unfolded state, which can improve the stability in the unfolded state. During folding, the transmission component 36 can improve the stability and movement consistency during the folding process.

[0034] According to an embodiment of the present invention, the folding bed 100 includes an upper locking mechanism 30 located at the upper ends of multiple uprights and a lower locking mechanism 40 located at the lower ends of multiple uprights. The lower locking mechanism 40 can both drive the multiple uprights to move away from each other and to move closer together, and can also drive the upper locking mechanism 30 to switch between locked and unlocked states, simplifying the unfolding and folding steps and providing convenience for users. In addition, the upper locking mechanism 30 also includes multiple connecting rods, a first folding member 35, and a transmission assembly 36. The transmission assembly 36 drives a portion of the connecting rods to rotate synchronously, and then drives another portion of the connecting rods to rotate synchronously through the first folding member 35 connected to the rotating connecting rods, thereby improving the stability and consistency of movement during unfolding and folding, improving the unfolding and folding effect of the folding bed 100, and improving the unfolding and folding effect while simplifying the unfolding and folding steps.

[0035] In some embodiments of this utility model, the transmission component 36 is disposed on the first retracting member 35. Specifically, the transmission component 36 is hinged to the inner side of the first retracting member 35, which can improve the tightness of the connection between the first retracting member 35 and the transmission component 36, thus improving the transmission effect. The first retracting member 35 can also protect the transmission component 36, isolating it from the external environment, thereby ensuring the transmission effect of the transmission component 36. The first retracting member 35 can connect the connecting rod to the transmission component 36, facilitating the synchronous movement of the transmission component 36 and the connecting rod. The first retracting member 35 can also form a support between the first connecting rod 31 and the second connecting rod 32, as well as the third connecting rod 33 and the fourth connecting rod 34, thus improving the stability of the structure.

[0036] Furthermore, combined Figure 2 In some embodiments of this utility model, the transmission assembly 36 includes a first gear 361 and a second gear 362. The first gear 361 is rotatably mounted on the first retractable member 35 and connected to the third connecting rod 33. The second gear 362 is rotatably mounted on the first retractable member 35 and connected to the fourth connecting rod 34. The first gear 361 and the second gear 362 are connected in a transmission manner and rotate in opposite directions. Thus, when the first gear 361 and the second gear 362 rotate, the third connecting rod 33 and the fourth connecting rod 34 can move closer or further apart, thereby driving the third connecting rod 33 and the fourth connecting rod 34 to unfold or fold. More specifically, the first gear 361 can be coaxially connected to the third connecting rod 33 and the first retractable member 35, and the second gear 362 can be coaxially connected to the fourth connecting rod 34 and the first retractable member 35. This allows for the connection of the connecting rod, the transmission assembly 36, and the first retractable member 35, and the structure is simple and easy to construct. More specifically, the first gear 361 may include a first connecting portion and a first tooth. The first connecting portion is tubular and adapted to connect with the third link 33. The first tooth connects to the other end of the first connecting portion away from the link, so that the tooth can face the fourth link 34 and is adapted to engage with the tooth connected to the fourth link 34. Similarly, the second gear 362 may also include a second connecting portion and a second tooth. The second connecting portion connects to the fourth link 34, and the second tooth faces the first tooth and can engage with the first tooth.

[0037] Furthermore, in some embodiments of this utility model, the transmission assembly 36 further includes a third gear 363 and a fourth gear 364. The third gear 363 is disposed on the first retaining member 35, and the fourth gear 364 is disposed on the first retaining member 35. This can further improve the connection stability between the transmission assembly 36 and the first retaining member 35, and facilitate the transmission of the power of the transmission assembly 36 to the first retaining member 35 and the first connecting rod 31 and the second connecting rod 32 connected to the first retaining member 35, thereby realizing the synchronous movement of the four connecting rods. Specifically, the first gear 361 meshes with the third gear 363, and the second gear 362 meshes with the fourth gear 364. The meshing of the third gear 363 and the fourth gear 364 provides good rotational adaptability, and the transmission ratio of the gear meshing is stable, which can avoid slippage and asynchronous rotation, and ensure the synchronicity of the action.

[0038] Furthermore, the first gear 361 and the second gear 362 can define the rotation range of the third gear 363 and the fourth gear 364.

[0039] According to the folding bed 100 of the present utility model embodiment, the first folding member 35 can also limit the range of motion of the folding bed 100 when switching between the unfolded state and the folded state, so as to play a locking effect.

[0040] Combination Figure 1 and Figure 2 In some embodiments of this utility model, the first retractable member 35 is provided with a first pin 351 and a first sliding groove 301. The first sliding groove 301 extends around the first pin 351, thereby allowing the first pin 351 to cooperate with the first sliding groove 301 to limit the rotation or movement of the first connecting rod 31 and the second connecting rod 32 relative to the first retractable member 35. The first end of the first sliding groove 301 is provided with a first positioning groove 303 extending away from the first pin 351. The first connecting rod 31 is provided with a second sliding groove 302 and a second pin 312. The second sliding groove 302 extends along the axial direction of the first connecting rod 31. The first pin 351 is rotatably and slidably disposed in the second sliding groove 302, and the second pin 312 is rotatably and slidably disposed in the first sliding groove 301. In the locked state, the second pin 312 is located in the first positioning groove 303; in the unlocked state, the second pin 312 is located in the first sliding groove 301 and can slide along the first sliding groove 301 toward the second end of the first sliding groove 301.

[0041] Specifically, the second pin 312 extends into and slides within the first slide groove 301. The first slide groove 301 includes a first positioning groove 303 for defining the second pin 312. When the second pin 312 is located in the first positioning groove 303, the positions of the first connecting rod 31 and the second connecting rod 32 are constrained, making rotation less likely, thereby improving the locking effect of the upper locking mechanism 30 in the unfolded state. The first slide groove 301 can define the range of motion or path of the second pin 312, thereby accommodating the folding and unfolding activities of the first connecting rod 31 and the second connecting rod 32, which helps to improve stability during activities. The first pin 351 is adapted to slide within the second slide groove 302, which can prevent the first pin from forming a dead point in the sliding space, improving the tightness and flexibility of the fit between the first connecting rod 31 and the second connecting rod 32 and the first retractable member 35.

[0042] In some embodiments of this utility model, the distance between the first sliding groove 301 and the first shaft pin 351 in the direction from the first end to the second end gradually decreases and then gradually increases, which can improve the sliding range of the second shaft pin in the first sliding groove, thereby improving the folding effect of the first connecting rod 31 and the second connecting rod 32, and improving the compactness and stability of the folded structure.

[0043] Furthermore, combined Figure 1 When the folding bed 100 is in the unfolded or folded state, the second axle pin 312 is located in the first positioning groove 303 of the first slide groove 301 to ensure the stability of the second axle pin 312 and prevent it from moving easily, thereby improving the structural stability of the folding bed 100. When the folding bed 100 is in the folded state, the second axle pin 312 can be located at the second end of the first slide groove 301; during the process of changing the folding bed 100 from the unfolded state to the folded state or from the folded state to the unfolded state, the second axle pin 312 slides between the first end and the second end of the first slide groove 301.

[0044] Combination Figure 1 In some embodiments of this utility model, the first link 31 and the third link 33 are parallel to each other, and the second link 32 and the fourth link 34 are parallel to each other. In this way, the first link 31, the second link 32, the third link 33 and the fourth link 34 can form a double-layer support structure, which is beneficial to improving the structural stability of the upper part of the folding bed 100.

[0045] Combination Figure 1 and Figure 2In some embodiments of this utility model, the lower locking mechanism 40 has an unfolded state and a folded state. When the lower locking mechanism 40 switches from the unfolded state to the folded state, it drives the first upright 10 and the second upright 20 to first move away from each other and then move towards each other. The movement of the first upright 10 and the second upright 20 can drive the upper locking mechanism 30 to unlock. Specifically, when the user drives the lower locking mechanism 40, for example by pulling the lower locking mechanism 40 upwards, the first upright 10 and the second upright 20 first tilt outwards or in a direction away from each other, so that the first connecting rod 31 and the second connecting rod 32 move in a direction away from each other. Figure 1 The second pin 312 can disengage from the first positioning groove 303. When the first upright 10 and the second upright 20 are closed together, the second pin 312 can slide in the first sliding groove 301 following the movement of the first upright 10 and the second upright 20.

[0046] Furthermore, combined Figure 1 In some embodiments of this utility model, the lower locking mechanism 40 includes a second folding member 420, a fifth connecting rod 41, and a sixth connecting rod 46. The two ends of the fifth connecting rod 41 are rotatably connected to the first upright 10 and the second folding member 420, respectively. The two ends of the sixth connecting rod 46 are rotatably connected to the second upright 20 and the second folding member 420, respectively. Thus, when the folding bed 100 needs to be folded, driving the first folding member 35 can drive the ends of the fifth connecting rod 41 and the sixth connecting rod 46 connected to the first folding member 35 to move upward and tilt. The fifth connecting rod 41 can drive the first upright 10 to move, and the sixth connecting rod 46 can drive the second upright 20 to move. As the upward driving force increases, the tilt angle of the fifth connecting rod 41 and the sixth connecting rod 46 gradually increases, causing the first upright 10 and the second upright 20 to move closer to each other to achieve folding.

[0047] More specifically, in some embodiments of this utility model, the folding bed 100 further includes a first corner post 51 and a second corner post 52. The first corner post 51 is connected between the first connecting rod 31, the third connecting rod 33 and the first upright post 10, and the first corner post 51 can connect the first connecting rod 31, the third connecting rod 33 and the first upright post 10 to achieve a rotatable connection. The second corner post 52 is connected between the second connecting rod 32, the fourth connecting rod 34 and the second upright post 20, and the second corner post 52 can connect the second connecting rod 32, the fourth connecting rod 34 and the second upright post 20 to achieve a rotatable connection.

[0048] In conjunction with the foregoing, since the first closing member 35 of the upper locking mechanism 30 is provided with a locking mechanism for positioning the first link 31 and the second link 32, that is, the second shaft pin 312 is positioned in the first positioning groove 303 of the first slide groove 301, it is necessary to change the state or position of the first link 31 and the second link 32 so that the second shaft pin 312 disengages from the first positioning groove 303 to achieve unlocking. Specifically, the first link 31, the third link 33, the first retractor 35, and the first corner post 51 form a parallelogram structure. Therefore, when the end of the fifth link 41 connected to the second retractor 420 moves upward, the end of the fifth link 41 connected to the first upright 10 also moves, allowing the fifth link 41 to drive the lower end of the first upright 10 to move inward, causing the first upright 10 to tilt, which in turn drives the first corner post 51 to move and generate a torsional force, or in other words, to apply force at one corner of the parallelogram structure, thereby changing the locking state. For example, pulling the first link 31 outward (i.e., away from the first retractor 35) causes the second shaft pin 312 to disengage from the first positioning groove 303, thus achieving automatic unlocking of the upper locking mechanism 30.

[0049] Furthermore, combined Figure 1 and Figure 2 The second link 32, the fourth link 34, the first closing member 35, and the second corner post 52 also form a parallelogram structure, and their unlocking principle is the same, which will not be described in detail here. Since the first closing member 35 is equipped with a transmission component 36, the transmission component can realize the synchronous movement of the two parallelograms on the left and right sides of the first closing member 35 during the folding process, so that the second axle pins 312 of the first link 31 and the second link 32 can be simultaneously disengaged from the first positioning groove 303, thereby improving the running stability during folding.

[0050] Combination Figure 4 and Figure 6 In some embodiments of this utility model, the second folding member 420 includes a base 42 and a locking member 421. The locking member 421 is disposed on and connected to the base 42. In the unfolded state, the locking member 421 locks at least one of the fifth link 41 and the sixth link 46. In the unfolded state, the locking member 421 is locked, and the other end of the fifth link 41 cannot rotate relative to the base 42. When the folding bed 100 is folded, the locking member 421 is unlocked, and the fifth link 41 rotates relative to the base 42 and closes.

[0051] Combination Figure 3 and Figure 4In some embodiments of this utility model, the locking member 421 includes a reset member 422, which abuts against the base 42 and the locking member 421. The base 42 has a receiving cavity for accommodating the locking member 421, which extends into the receiving cavity. The locking member 421 has two opposing positioning portions 4211. In the locked state, the fifth link 41 is located at the positioning portions 4211. The locking member 421 also includes a mounting hole 4210, which can be used to install a handle for easy lifting of the locking member 421. When the locking member 421 is lifted, the fifth link 41 cannot be locked, thus unlocking the locking member. The reset member 422 is located inside the locking member 421 and is used to reset the locking member 421. In practical applications, in the folded state, the user can pull the handle upwards. The handle unlocks the folding of the fifth link 41, and the handle drives the base 42 upwards, thereby driving the folding of the fifth link 41 and the sixth link 46.

[0052] Combination Figure 1 In some embodiments of this utility model, the lower locking mechanism 40 further includes a support rod 43, which is rotatably connected to opposite sides of the base 42. The support rod 43 can fill the space within the brackets of the fifth link 41 and the sixth link 46 to improve the support force of the lower part or bottom of the folding bed 100, thereby improving the overall structural stability of the folding bed 100. When the folding bed 100 is folded, the support rods 43, rotatably connected to opposite sides of the base 42, can move closer together as the base 42 moves upward; when the folding bed 100 is unfolded, the support rods 43 can move further apart as the base 42 moves downward.

[0053] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A folding bed (100), characterized in that, The folding bed (100) has a usable space and includes a plurality of uprights distributed around the usable space. The folding bed (100) has a folded state and an unfolded state. The plurality of uprights includes adjacent first uprights (10) and second uprights (20). The first uprights (10) and the second uprights (20) extend vertically and are spaced apart along a first horizontal direction. The folding bed (100) also includes: Upper locking mechanism (30) is connected to the upper end of the first upright (10) and the upper end of the second upright (20). The upper locking mechanism (30) has a locked state and an unlocked state. A lower locking mechanism (40) is provided, which connects the lower end of the first upright (10) and the lower end of the second upright (20). The lower locking mechanism (40) is configured to drive the first upright (10) and the second upright (20) to move away from each other and to move closer together, and is also configured to drive the upper locking mechanism (30) to switch between the locked state and the unlocked state. The upper locking mechanism (30) includes a first connecting rod (31), a second connecting rod (32), a third connecting rod (33), a fourth connecting rod (34), and a first retractable member (35). The two ends of the first connecting rod (31) are rotatably connected to the first upright rod (10) and the first retractable member (35), respectively. The two ends of the second connecting rod (32) are rotatably connected to the second upright rod (20) and the first retractable member (35), respectively. The two ends of the third connecting rod (33) are rotatably connected to the first upright rod (10) and the first retractable member (35), respectively. The fourth connecting rod (34)... The second upright (20) and the first retractable member (35) are rotatably connected at both ends respectively. A transmission assembly (36) is connected between the third link (33) and the fourth link (34). The transmission assembly (36) is used to drive the third link (33) and the fourth link (34) to rotate synchronously. In the locked state, the first retractable member (35) restricts the rotation of the first link (31) and the second link (32). In the unlocked state, the first retractable member (35) removes the restriction on the rotation of the first link (31) and the second link (32).

2. The folding bed (100) according to claim 1, characterized in that, The transmission assembly (36) is located on the first retractor (35).

3. The folding bed (100) according to claim 2, characterized in that, The transmission assembly (36) includes a first gear (361) and a second gear (362). The first gear (361) is rotatably disposed on the first retaining member (35) and is connected to the third connecting rod (33). The second gear (362) is rotatably disposed on the first retaining member (35) and is connected to the fourth connecting rod (34). The first gear (361) and the second gear (362) are connected in a transmission manner and rotate in opposite directions.

4. The folding bed (100) according to claim 3, characterized in that, The transmission assembly (36) further includes a third gear (363) and a fourth gear (364). The third gear (363) is disposed on the first retaining member (35), and the fourth gear (364) is disposed on the first retaining member (35). The first gear (361) meshes with the third gear (363), and the second gear (362) meshes with the fourth gear (364). The third gear (363) and the fourth gear (364) mesh.

5. The folding bed (100) according to claim 1, characterized in that, The first retractable member (35) is provided with a first pivot pin (351) and a first sliding groove (301). The first sliding groove (301) extends around the first pivot pin (351). The first end of the first sliding groove (301) is provided with a first positioning groove (303) extending away from the first pivot pin (351). The first connecting rod (31) is provided with a second sliding groove (302) and a second pivot pin (312). The second sliding groove (302) extends along the axial direction of the first connecting rod (31). The first pivot pin (351) is slidably disposed in the second sliding groove (302), and the second pivot pin (312) is slidably disposed in the first sliding groove (301). In the locked state, the second pin (312) is located in the first positioning groove (303); in the unlocked state, the second pin (312) is located in the first slide groove (301) and can slide along the first slide groove (301) to the second end of the first slide groove (301).

6. The folding bed (100) according to claim 5, characterized in that, The distance between the first groove (301) and the first pin (351) in the direction from the first end to the second end gradually decreases and then gradually increases.

7. The folding bed (100) according to claim 1, characterized in that, The first link (31) is parallel to the third link (33), and the second link (32) and the fourth link (34) are parallel to each other.

8. The folding bed (100) according to claim 1, characterized in that, The lower locking mechanism (40) has an unfolded state and a folded state. When the lower locking mechanism (40) switches from the unfolded state to the folded state, it drives the first upright (10) and the second upright (20) to move away from each other and then close together.

9. The folding bed (100) according to claim 8, characterized in that, The lower locking mechanism (40) includes a second retractor (420), a fifth link (41) and a sixth link (46). The two ends of the fifth link (41) are rotatably connected to the first upright (10) and the second retractor (420), respectively. The two ends of the sixth link (46) are rotatably connected to the second upright (20) and the second retractor (420), respectively.

10. The folding bed (100) according to claim 9, characterized in that, The second retractable member (420) includes a base (42) and a locking member (421), the locking member (421) being disposed on and connected to the base (42), and in the unfolded state, the locking member (421) locking at least one of the fifth link (41) and the sixth link (46).

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