Bed frame and bed

Abstract

The utility model provides a bed frame and a bed, and relates to the technical field of beds, the bed frame comprises a left side supporting assembly, a right side supporting assembly, a first connecting rod and a second connecting rod; the left supporting assembly and the right supporting assembly are arranged side by side, extend in the length direction of the bed frame and are each provided with a first end and a second end. The first connecting rod and the second connecting rod are crossed in the middle and are hinged; one end of the first connecting rod is hinged to the first end of the left supporting assembly, and the other end is movably arranged at the second end of the right supporting assembly in the length direction of the bed frame; one end of the second connecting rod is hinged to the first end of the right supporting assembly, and the other end is movably arranged at the second end of the left supporting assembly in the length direction of the bed frame; the first connecting rod and the second connecting rod move in the length direction of the bed frame so that the left supporting assembly and the right supporting assembly can move in the direction close to or away from each other. Therefore, the adjustable bed frame has the advantages of being compatible with mattresses of various sizes and convenient to adjust the width of the bed frame.

Description

Technical Field

[0001] The utility model relates to the technical field of beds, in particular to a bed frame and a bed. Background Art

[0002] A bed generally comprises a bed frame and a mattress, with the mattress placed on the support surface of the bed frame. In recent years, folding bed frames have seen rapid growth due to their ability to be folded and stored to reduce space, making them easier to transport and carry, and reducing packaging and transportation costs.

[0003] However, the existing folding bed frame has a fixed width when unfolded and is not compatible with mattresses of different sizes.

[0004] Therefore, a bed frame and a bed that are compatible with mattresses of various sizes and convenient for adjusting the width of the bed frame need to be designed. Utility Model Content

[0005] The purpose of the present invention is to provide a bed frame and a bed in view of the defects and shortcomings of the prior art, which at least solves one of the above technical problems. The bed frame and the bed have the advantages of being compatible with mattresses of various sizes and being easy to adjust the width of the bed frame.

[0006] To achieve the above-mentioned object, the present invention provides a bed frame, comprising: a left support assembly and a right support assembly, which are arranged in parallel and extend along the length of the bed frame and each have a first end and a second end; a first connecting rod and a second connecting rod, which cross and are hingedly arranged in the middle;

[0007] One end of the first connecting rod is hinged to the first end of the left supporting assembly, and the other end is movably arranged at the second end of the right supporting assembly along the length direction of the bed frame;

[0008] One end of the second connecting rod is hinged to the first end of the right supporting assembly, and the other end is movably arranged at the second end of the left supporting assembly along the length direction of the bed frame;

[0009] The first connecting rod and the second connecting rod move along the length direction of the bed frame to enable the left support assembly and the right support assembly to move toward or away from each other.

[0010] Optionally, the bed frame further includes a left-side locking device and a right-side locking device; the left-side locking device is used to lock the second connecting rod and the second end of the left-side support assembly, and the right-side locking device is used to lock the first connecting rod and the second end of the right-side support assembly to prevent the left-side support assembly and the right-side support assembly from moving toward or away from each other at any one of a plurality of selected positions.

[0011] Optionally, the bed frame also includes a left retractable fixing frame configured on the inner side of the second end of the left support assembly and a right retractable fixing frame configured on the inner side of the second end of the right support assembly; the left retractable fixing frame and the right retractable fixing frame both have a sliding groove extending along the length direction of the bed frame; the first connecting rod is slidably connected to the sliding groove of the right retractable fixing frame, and the second connecting rod is slidably connected to the sliding groove of the left retractable fixing frame.

[0012] Optionally, the left retractable fixing frame and the right retractable fixing frame are configured in a mirror-image manner; the left retractable fixing frame includes: a left connecting rod with one end fixed to the left support assembly and the other end extending toward the right retractable fixing frame, a left sliding rod fixed to the end of the left connecting rod away from the left support assembly and configured parallel to the left support assembly; the slide groove is configured on the left sliding rod; the end of the second connecting rod away from the first end of the right support assembly is configured with a bolt shaft matching the shape of the slide groove; the left locking device is a locking nut threadedly engaged with the bolt shaft to lock the second connecting rod to the left sliding rod.

[0013] Optionally, the left retractable fixing frame further includes: a left reinforcing rod having one end fixedly connected to an end of the left connecting rod close to the left supporting assembly, and the other end fixedly connected to an end of the left sliding rod away from the left connecting rod.

[0014] Optionally, the bed frame also includes a left fixed bracket configured on the inner side of the first end of the left support assembly and a right fixed bracket configured on the inner side of the first end of the right support assembly; the first connecting rod is hinged to the end of the left fixed bracket away from the left support assembly; the second connecting rod is hinged to the end of the right fixed bracket away from the right support assembly.

[0015] Optionally, the one of the first connecting rod and the second connecting rod located on the lower side has a concave area in the middle area to avoid the one located on the upper side, or the one of the first connecting rod and the second connecting rod located on the upper side has an upper concave area in the middle area to avoid the one located on the lower side, so that the ends of the first connecting rod and the second connecting rod are at the same horizontal height.

[0016] Optionally, the bed frame also includes: a control box arranged in the hinge center area of ​​the first connecting rod and the second connecting rod; the left support assembly and the right support assembly both include a support frame, a head and back support rod, a leg lifting frame, and a first motor arranged in the support frame to drive the tilt angle of the head and back support rod, and a second motor to drive the leg lifting frame to rise and fall; the control box is electrically connected to the first motor and the second motor through a wire.

[0017] Optionally, the bed frame also includes a mounting frame, a left-side wire storage and folding link pair, and a right-side wire storage and folding link pair; the control box is fixed to the hinge center area of ​​the first link and the second link through the mounting frame; the left-side wire storage and folding link pair includes a first storage rod hinged at one end to the left side of the mounting frame, a second storage rod hinged at one end to the end of the first storage rod away from the mounting frame, and the other end to the left support assembly; the right-side wire storage and folding link pair includes a third storage rod hinged at one end to the left side of the mounting frame, a fourth storage rod hinged at one end to the end of the third storage rod away from the mounting frame, and the other end to the right support assembly.

[0018] On the other hand, the present invention further provides a bed, comprising the bed frame as described above, and a mattress arranged on the bed frame.

[0019] Compared with the prior art, the advantages of this application are:

[0020] Since the first link and the second link of the bed frame cross in the middle and are hinged, and one end of the first link and the second link is hinged to the first end of the left support assembly or the right support assembly, and the other end is correspondingly configured to be movably arranged at the second end of the left support assembly or the right support assembly along the length direction of the bed frame; in this way, when the angle between the first link and the second link changes and the first link and the second link move along the length direction of the bed frame, the left support assembly and the right support assembly can be moved toward or away from each other; in this way, the distance between the left support assembly and the right support assembly can be selectively increased or decreased, making it compatible with mattresses of various sizes and facilitating adjustment of the width of the bed frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of an embodiment of the utility model from one perspective;

[0023] Figure 2 This is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure decomposition from one perspective of an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure decomposition of another perspective of an embodiment of the utility model;

[0026] Figure 5 This is a structural diagram of the left retractable fixing frame according to an embodiment of the present utility model;

[0027] Figure 6 This is a schematic structural diagram of the left fixing bracket according to an embodiment of the present utility model;

[0028] Figure 7 This is a schematic structural diagram of the second connecting rod in an embodiment of the utility model;

[0029] Figure 8 This is a partial structural decomposition diagram of an embodiment of the present utility model;

[0030] Figure 9 It is a schematic diagram of the assembly structure of the mounting frame, the left side wire storage and folding connecting rod pair and the right side wire storage and folding connecting rod pair according to an embodiment of the present utility model.

[0031] Description of Reference Numerals

[0032] 100-Bed frame;

[0033] 1-left support assembly; a-first end; b-second end; 11-support frame; 12-head and back support rod; 13-leg lifting frame; 14-first motor; 15-second motor; 16-support foot;

[0034] 2-right side support assembly;

[0035] 31-first connecting rod; c-concave area; 311-bolt axis; 32-second connecting rod;

[0036] 41- left locking device; 42- right locking device;

[0037] 51-left retractable fixing frame; 511-left connecting rod; 512-left sliding rod; d-slide; 513-left reinforcing rod; 52-right retractable fixing frame;

[0038] 61-left fixed bracket; 611-crossbar; 612-vertical bar; 62-right fixed bracket;

[0039] 7-Mounting frame;

[0040] 81-left wire storage folding connecting rod pair; 811-first storage rod; 812-second storage rod; 82-right wire storage folding connecting rod pair; 821-third storage rod; 822-fourth storage rod;

[0041] 9-Control box. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in the present invention to indicate positions or positional relationships are based on the positions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limiting the present invention. In addition, terms such as "first" and "second" are used only to distinguish between multiple components or structures having the same or similar structures and do not represent any special limitation on the arrangement order or connection relationship.

[0044] Please refer to Figures 1 to 9 In one aspect, an embodiment of the present invention provides a bed frame 100 , comprising: a left support assembly 1 , a right support assembly 2 , a first connecting rod 31 , and a second connecting rod 32 .

[0045] The left and right support assemblies 1 and 2 are arranged side by side and extend along the length of the bed frame 100, each having a first end a and a second end b. It is understood that the left and right support assemblies 1 and 2 include at least a support frame 11 extending along the length of the bed frame 100, and support legs 16 located below the first and second ends a and b of the support frame 11.

[0046] The first connecting rod 31 and the second connecting rod 32 are intersected and hinged in the middle, that is, the first connecting rod 31 and the second connecting rod 32 can rotate relative to each other in the middle position.

[0047] It can be understood that the left support assembly 1, the right support assembly 2, the first connecting rod 31 and the second connecting rod 32 all need to have a certain supporting strength, and steel or alloy materials can be selected.

[0048] One end of the first connecting rod 31 is hinged to the first end a of the left support assembly 1, and the other end can be movably configured at the second end b of the right support assembly 2 along the length direction of the bed frame 100; one end of the second connecting rod 32 is hinged to the first end a of the right support assembly 2, and the other end can be movably configured at the second end b of the left support assembly 1 along the length direction of the bed frame 100.

[0049] The first connecting rod 31 and the second connecting rod 32 move along the length direction of the bed frame 100 to enable the left supporting assembly 1 and the right supporting assembly 2 to move toward or away from each other.

[0050] It can be understood that the change in the angle α between a section of the first connecting rod 31 close to the first end a of the left support assembly 1 and a section of the second connecting rod 32 close to the first end a of the right support assembly 2 can enable the first connecting rod 31 and the second connecting rod 32 to move along the length direction of the bed frame 100. Specifically, in this embodiment, when the angle α between a section of the first link 31 near the first end a of the left support assembly 1 and a section of the second link 32 near the first end a of the right support assembly 2 decreases, the first link 31 and the second link 32 move along the length of the bed frame 100 toward the second end b of the left support assembly 1 or the right support assembly 2, thereby causing the left support assembly 1 and the right support assembly 2 to move toward each other. When the angle α between a section of the first link 31 near the first end a of the left support assembly 1 and a section of the second link 32 near the first end a of the right support assembly 2 increases, the first link 31 and the second link 32 move upward along the length of the bed frame 100 away from the second end b of the left support assembly 1 or the right support assembly 2, thereby causing the left support assembly 1 and the right support assembly 2 to move away from each other. This selective increase or decrease in the distance between the left support assembly 1 and the right support assembly 2 allows the bed frame 100 to be compatible with mattresses of various sizes (not shown) and facilitates adjustment of the width of the bed frame 100.

[0051] It can be understood that in this embodiment, the first end a of the left support assembly 1 and the right support assembly 2 can correspond to the head end of the bed frame 100, and the second end b can correspond to the foot end of the bed frame 100; of course, in other embodiments, the first end a of the left support assembly 1 and the right support assembly 2 can correspond to the foot end of the bed frame 100, and the second end b can correspond to the head end of the bed frame 100; no specific limitation is made here.

[0052] In order to prevent the first link 31 and the second link 32 from moving with the left support assembly 1 and the right support assembly 2 when the width of the bed frame 100 is corresponding, the stability of the bed frame 100 can be improved. Figure 3 and Figure 7In this embodiment, the bed frame 100 further includes a left-side locking device 41 and a right-side locking device 42. The left-side locking device 41 is used to lock the second connecting rod 32 with the second end b of the left support assembly 1, while the right-side locking device 42 is used to lock the first connecting rod 31 with the second end b of the right support assembly 2, thereby preventing the left and right support assemblies 1 and 2 from moving toward or away from each other in any of a plurality of selected positions. It is understood that when the width of the bed frame 100 needs to be adjusted, the left-side locking device 41 and the right-side locking device 42 can be released. When the width of the bed frame 100 is adjusted to the appropriate width, the left-side locking device 41 locks the second connecting rod 32 with the second end b of the left support assembly 1, while the right-side locking device 42 locks the first connecting rod 31 with the second end b of the right support assembly 2, thereby preventing the first and second connecting rods 31 and 32 from moving along the length of the bed frame 100. In this way, the bed frame 100 can be compatible with mattresses of 1.0 m, 1.2 m, 1.5 m, and 1.8 m in length. Of course, in other embodiments, the bed frame 100 may not be provided with the left locking device 41 and the right locking device 42. This is because when the relative width of the bed frame 100 is adjusted, the mattress is directly pressed onto the bed frame 100. The weight pressure of the mattress can also basically prevent the first connecting rod 31 and the second connecting rod 32 from moving with the left support assembly 1 and the right support assembly 2. No specific limitation is made here.

[0053] In order to make the first connecting rod 31 and the second connecting rod 32 movable along the length direction of the bed frame 100, they are arranged at the second end b of the left support assembly 1 or the second end b of the right support assembly 2; Figure 2 、 Figure 4 and Figure 5In this embodiment, the bed frame 100 further includes a left retractable fixed frame 51 and a right retractable fixed frame 52. The left retractable fixed frame 51 is positioned inwardly of the second end b of the left support assembly 1, while the right retractable fixed frame 52 is positioned inwardly of the second end b of the right support assembly 2. Both the left and right retractable fixed frames 51 and 52 have a slide groove d extending along the length of the bed frame 100. The first connecting rod 31 is slidably connected to the slide groove d of the right retractable fixed frame 52, while the second connecting rod 32 is slidably connected to the slide groove d of the left retractable fixed frame 51. It can be understood that when the first connecting rod 31 slides with the slide groove d of the right retractable fixing frame 52, the angle between the first connecting rod 31 and the slide groove d of the right retractable fixing frame 52 also changes accordingly. When the second connecting rod 32 slides with the slide groove d of the left retractable fixing frame 51, the angle between the second connecting rod 32 and the slide groove d of the left retractable fixing frame 51 also changes accordingly. That is, the cooperation between the first connecting rod 31 and the right retractable fixing frame 52 and between the second connecting rod 32 and the left retractable fixing frame 51 is to slide and rotate at the same time. Of course, in other embodiments, the left retractable fixing frame 51 may not be configured on the inner side of the second end b of the left support component 1, but may be directly configured on the upper side of the second end b of the left support component 1, and the right retractable fixing frame 52 may not be configured on the inner side of the second end b of the right support component 2, but may be directly configured on the upper side of the second end b of the right support component 2; or the left retractable fixing frame 51 and the right retractable fixing frame 52 may be omitted, and the slide groove d may be directly configured on the second end b of the left support component 1 and the second end b of the right support component 2. As long as it can move along the length direction of the bed frame 100 on the first connecting rod 31 and the second connecting rod 32, the left support component 1 and the right support component 2 can be moved toward or away from each other, and no specific restrictions are made here.

[0054] Alternatively, see Figure 4 and Figure 5In this embodiment, the left retractable fixing frame 51 and the right retractable fixing frame 52 are configured in a mirror-image manner. The left retractable fixing frame 51 includes a left connecting rod 511 and a left sliding rod 512. One end of the left connecting rod 511 is fixedly connected to the left support assembly 1, and the other end extends toward the right retractable fixing frame 52. The left sliding rod 512 is fixedly connected to the end of the left connecting rod 511 away from the left support assembly 1 and is configured parallel to the left support assembly 1. A slide d is configured on the left sliding rod 512. The end of the second connecting rod 32 away from the first end a of the right support assembly 2 is configured with a bolt shaft 311 that matches the shape of the slide d; the left locking device 41 is a locking nut that is threadedly engaged with the bolt shaft 311 to lock the second connecting rod 32 to the left sliding rod 512. It can be understood that the structure of the right retractable fixing frame 52 corresponds to that of the left retractable fixing frame 51, so it will not be described in detail here. In this manner, movement of the first and second connecting rods 31, 32 along the length of the bed frame 100 can cause the left support assembly 1 and the right support assembly 2 to move toward or away from each other. Furthermore, the left support assembly 1 and the right support assembly 2 can move toward or away from each other at any of a plurality of selected positions. It will be appreciated that corresponding positions on the left slide bar 512 are marked with labels corresponding to bed frame 100 widths of 1.0 m, 1.2 m, 1.5 m, and 1.8 m, to facilitate user adjustment of the corresponding widths.

[0055] In order to improve the strength of the left shrinkage fixing frame 51, optionally, please refer to Figure 5 In this embodiment, the left retractable fixing frame 51 further includes a left reinforcing rod 513 having one end fixedly connected to the end of the left connecting rod 511 near the left support assembly 1 and the other end fixedly connected to the end of the left sliding rod 512 away from the left connecting rod 511. This creates a triangular shape for the left retractable fixing frame 51, providing it with greater strength and stability. It is understood that the right retractable fixing frame 52 can have a similar structure.

[0056] In order to facilitate the assembly between the first end a of the left support assembly 1 and the right support assembly 2 and the first connecting rod 31 or the second connecting rod 32, optionally, please refer to Figure 3 and Figure 6In this embodiment, the bed frame 100 further includes a left fixed bracket 61 and a right fixed bracket 62. The left fixed bracket 61 is arranged on the inner side of the first end a of the left support assembly 1, and the right fixed bracket 62 is arranged on the inner side of the first end a of the right support assembly 2. The first connecting rod 31 is hinged to the end of the left fixed bracket 61 away from the left support assembly 1; the second connecting rod 32 is hinged to the end of the right fixed bracket 62 away from the right support assembly 2. It can be understood that in order to improve the fixing strength of the left fixed bracket 61 and the left support assembly 1, and the fixing strength of the right fixed bracket 62 and the right support assembly 2; the left fixed bracket 61 and the right fixed bracket 62 are roughly T-shaped, and are fixed to the left support assembly 1 or the right support assembly 2 in two directions through a side horizontal rod 611 and a vertical rod 612; that is, the left fixed bracket 61 and the right fixed bracket 62 are fixed in two degrees of freedom, both horizontally and vertically, so that they cannot be displaced.

[0057] To ensure the consistency of processing and the stability and reliability of movement, please refer to Figure 3 and Figure 7 In this embodiment, the lower link 31 and the second link 32 have a concave region c in the middle region that allows for clearance of the upper link 32, so that the ends of the first link 31 and the second link 32 are at the same level. Of course, in other embodiments, the upper link 31 and the second link 32 may also have a concave region in the middle region that allows for clearance of the lower link 32 (not shown in the figures), and this is not a specific limitation.

[0058] In order to make the bed frame 100 have a posture adjustment function, optionally, please refer to Figure 8 In this embodiment, the bed frame 100 further includes: a control box 9 disposed at the hinged center area of ​​the first connecting rod 31 and the second connecting rod 32. The left support assembly 1 and the right support assembly 2 each include a support frame 11, a head and back support rod 12, a leg lifting frame 13, and a first motor 14 disposed in the support frame 11 to drive the tilt angle of the head and back support rod 12, and a second motor 15 to drive the leg lifting frame 13 to move up and down; the control box 9 is electrically connected to the first motor 14 and the second motor 15 via a wire (not shown in the figure). It can be understood that the specific structures of the control box 9, the left support assembly 1 and the right support assembly 2, as well as the electrical control method of the control box 9 and the first motor 14 and the second motor 15 are all prior art, so they will not be elaborated on here.

[0059] In order to prevent the wires connecting the control box 9 and the first motor 14 and the second motor 15 from sinking and dragging on the ground when the width of the bed frame 100 is adjusted, which affects normal use, please refer to Figure 8 and Figure 9In this embodiment, the bed frame 100 further includes a mounting frame 7, a left-side wire storage and folding link pair 81, and a right-side wire storage and folding link pair 82; the control box 9 is fixed to the center region of the hinge between the first link 31 and the second link 32 via the mounting frame 7. The left-side wire storage and folding link pair 81 includes a first storage rod 811 and a second storage rod 812. One end of the first storage rod 811 is hinged to the left side of the mounting frame 7; one end of the second storage rod 812 is hinged to the end of the first storage rod 811 away from the mounting frame 7, and the other end is hinged to the left support assembly 1. The right-side wire storage and folding link pair 82 includes a third storage rod 821 and a fourth storage rod 822. One end of the third storage rod 821 is hinged to the left side of the mounting frame 7; one end of the fourth storage rod 822 is hinged to the end of the third storage rod 821 away from the mounting frame 7, and the other end is hinged to the right support assembly 2. Thus, when the width of the bed frame 100 is adjusted, the left and right wire storage and folding link pairs 81 and 82 may also fold or unfold accordingly. Specifically, the first storage rod 811, the second storage rod 812, the third storage rod 821, and the fourth storage rod 822 may all be made of sheet metal. The wires can be secured thereto using cable ties (not shown) or cords (not shown).

[0060] Another embodiment of the present invention provides a bed (not shown) comprising the bed frame 100 described above, and a mattress (not shown) disposed on the bed frame 100. Since the bed has all the structures and connections of the bed frame 100 described above, it has all the advantages of the bed frame 100 and will not be described in detail here.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bed frame, characterized in that: include: A left support assembly (1) and a right support assembly (2) are arranged in parallel and extend along the length direction of the bed frame, each having a first end (a) and a second end (b), and a first connecting rod (31) and a second connecting rod (32) are intersected and hingedly arranged in the middle; One end of the first connecting rod (31) is hinged to the first end (a) of the left support assembly (1), and the other end is movably arranged at the second end (b) of the right support assembly (2) along the length direction of the bed frame; One end of the second connecting rod (32) is hinged to the first end (a) of the right support assembly (2), and the other end is movably arranged at the second end (b) of the left support assembly (1) along the length direction of the bed frame; The first connecting rod (31) and the second connecting rod (32) move along the length direction of the bed frame to enable the left support assembly (1) and the right support assembly (2) to move toward or away from each other.

2. The bed frame according to claim 1, wherein: The invention also includes a left locking device (41) and a right locking device (42); the left locking device (41) is used to lock the second connecting rod (32) and the second end (b) of the left supporting assembly (1), and the right locking device (42) is used to lock the first connecting rod (31) and the second end (b) of the right supporting assembly (2), so as to prevent the left supporting assembly (1) and the right supporting assembly (2) from moving toward or away from each other at any one of a plurality of selected positions.

3. The bed frame according to claim 2, wherein: The bed frame further comprises a left retractable fixed frame (51) arranged on the inner side of the second end (b) of the left support assembly (1) and a right retractable fixed frame (52) arranged on the inner side of the second end (b) of the right support assembly (2); the left retractable fixed frame (51) and the right retractable fixed frame (52) both have a slide groove (d) extending along the length direction of the bed frame; the first connecting rod (31) is slidably connected to the slide groove (d) of the right retractable fixed frame (52), and the second connecting rod (32) is slidably connected to the slide groove (d) of the left retractable fixed frame (51).

4. The bed frame according to claim 3, wherein: The left shrinkage fixing frame (51) and the right shrinkage fixing frame (52) are mirror-imaged; the left shrinkage fixing frame (51) comprises: a left connecting rod (511) having one end fixedly connected to the left support assembly (1) and the other end extending toward the right shrinkage fixing frame (52); a left sliding rod (512) fixedly connected to the end of the left connecting rod (511) away from the left support assembly (1) and arranged in parallel with the left support assembly (1); the sliding groove (d) is arranged on the left sliding rod (512); the end of the second connecting rod (32) away from the first end (a) of the right support assembly (2) is provided with a bolt shaft (311) matching the shape of the sliding groove (d); the left locking device (41) is a locking nut threadedly matched with the bolt shaft (311) to lock the second connecting rod (32) and the left sliding rod (512).

5. The bed frame according to claim 4, wherein: The left retractable fixing frame (51) further comprises: a left reinforcing rod (513) having one end fixedly connected to an end of the left connecting rod (511) close to the left supporting assembly (1), and the other end fixedly connected to an end of the left sliding rod (512) away from the left connecting rod (511).

6. The bed frame according to claim 2, wherein: The invention also includes a left fixed bracket (61) configured on the inner side of the first end (a) of the left support assembly (1) and a right fixed bracket (62) configured on the inner side of the first end (a) of the right support assembly (2); the first connecting rod (31) is hinged to one end of the left fixed bracket (61) away from the left support assembly (1); and the second connecting rod (32) is hinged to one end of the right fixed bracket (62) away from the right support assembly (2).

7. The bed frame according to claim 1, wherein: The first connecting rod (31) and the second connecting rod (32) have a concave area (c) in the middle area of ​​the lower side thereof to avoid the upper side thereof, or the first connecting rod (31) and the second connecting rod (32) have a concave area in the middle area of ​​the upper side thereof to avoid the lower side thereof, so that the ends of the first connecting rod (31) and the second connecting rod (32) are located at the same horizontal height.

8. The bed frame according to claim 1, wherein: Also includes: A control box (9) is arranged in the hinge center area of ​​the first connecting rod (31) and the second connecting rod (32); the left support assembly (1) and the right support assembly (2) both include a support frame (11), a head and back support rod (12), a leg lifting frame (13), and a first motor (14) arranged in the support frame (11) for driving the tilt angle of the head and back support rod (12), and a second motor (15) for driving the leg lifting frame (13) to rise and fall; the control box (9) is electrically connected to the first motor (14) and the second motor (15) through wires.

9. The bed frame according to claim 8, wherein: It also includes a mounting frame (7), a left-side wire storage folding link pair (81) and a right-side wire storage folding link pair (82); the control box (9) is fixed to the hinge center area of ​​the first link (31) and the second link (32) through the mounting frame (7); the left-side wire storage folding link pair (81) includes a first storage rod (811) hinged to the left side of the mounting frame (7), one end is hinged to the end of the first storage rod (811) away from the mounting frame (7), and the other end is hinged to the left support assembly (1); the right-side wire storage folding link pair (82) includes a third storage rod (821) hinged to the left side of the mounting frame (7), one end is hinged to one end of the mounting frame (7) of the third storage rod (821), and the other end is hinged to the right support assembly (2).

10. A bed, characterized in that: The invention comprises a bed frame according to any one of claims 1 to 9, and a mattress arranged on the bed frame.

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