CN220988244U

CN220988244U - Mattress frame

Info

Publication number: CN220988244U
Application number: CN202323230052.1U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Suzhou Zhibei Home Technology Co ltd
Current assignee: Suzhou Zhibei Home Technology Co ltd
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-05-24
Anticipated expiration: 2033-11-29

Abstract

The utility model discloses a mattress frame which can be directly placed on a traditional bed for use. The utility model provides a mattress frame, includes the support frame, is provided with middle frame, back upset subassembly, shank lifting subassembly on the support frame, and back upset subassembly is located one side of middle frame, and shank lifting subassembly is located the opposite side of middle frame, its characterized in that: the electric telescopic leg comprises a leg body, a leg body lifting assembly, a leg body overturning assembly, a leg body electric telescopic rod, a back body electric telescopic rod and a leg body electric telescopic rod, wherein the leg body electric telescopic rod is obliquely arranged, the back body electric telescopic rod is obliquely arranged, one end of the leg body electric telescopic rod is hinged to the leg body lifting assembly, the other end of the leg body electric telescopic rod is hinged to the supporting frame, one end of the back body electric telescopic rod is hinged to the back body overturning assembly, the other end of the back body electric telescopic rod is hinged to the supporting frame, the lower end face of the supporting frame is a shelving reference surface, and the leg body electric telescopic rod and the back body electric telescopic rod are integrally located above the shelving reference surface.

Description

Mattress frame

Technical Field

The utility model belongs to the technical field of folding mattresses.

Background

The mattress frame is used without a bed leg structure and is placed on a traditional bed, and when the mattress is used, a soft cushion is placed on the mattress frame, so that a human body can obtain a comfortable sitting and lying functional bed by adjusting the shape of the mattress frame.

For example, chinese patent application publication No. CN218390439U, published as 2023, 01 and 31 discloses a three-section split bed, which includes a back bottom frame, a back lifting frame, a back electric telescopic rod, a leg bottom frame, a leg lifting assembly, and a leg electric telescopic rod, wherein the back lifting frame is assembled on the back bottom frame, the leg lifting assembly is assembled on the leg bottom frame, one end of the back electric telescopic rod is hinged with the back bottom frame, the other end of the back electric telescopic rod is hinged with the back lifting frame, one end of the leg electric telescopic rod is connected with the leg bottom frame, the other end of the leg electric telescopic rod is hinged with the leg lifting assembly, a first bed leg is detachably connected to the back bottom frame, a second bed leg is detachably connected to the leg bottom frame, and the split bed also includes a bottom frame and a bottom support, and two ends of the bottom support are detachably connected with the back bottom frame and the leg bottom frame; the bottom frame is detachably connected with the bottom support; and/or the back bottom frame and the leg bottom frame are embedded and buckled with each other after the back bottom frame and the leg bottom frame are overlapped.

In the prior art, because the body of a human body is large, the back electric telescopic rod is required to provide large thrust, so that the inclination angle of the back electric telescopic rod has a requirement, and when the designed angle position of the back electric telescopic rod is relatively normal, the back lifting frame cannot be pushed to turn upwards.

In the structure, the three-section split bed has a bed foot structure, and under the supporting action of the bed feet, the distance is reserved between the bottom frame and the ground, so that the three-section split bed has rich space for the installation of the back electric telescopic rod. In the prior art, a support structure is adopted, one end of the support is fixedly connected with the back underframe, the other end of the support extends to the lower side of the bottom underframe to be provided for the installation of the back electric telescopic rod, and therefore, the two ends of the back electric telescopic rod have obvious height differences, and the back electric telescopic rod has obvious inclination, so that the back lifting frame can be pushed to overturn upwards. The upper part of the three-section split bed is thinner due to the design, but because the back electric telescopic rod is partially positioned below the reference surface of the bottom frame, the rest parts of the three-section split bed cannot be directly placed on a traditional bed when the bed legs are not used, or the three-section split bed cannot be stably placed because the back electric telescopic rod is partially protruded out of the reference surface of the bottom frame.

Disclosure of utility model

The object of the present utility model is to provide a mattress support which can be used directly on a conventional bed.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model provides a mattress frame, includes the support frame, is provided with middle frame, back upset subassembly, shank lifting subassembly on the support frame, and back upset subassembly is located one side of middle frame, and shank lifting subassembly is located the opposite side of middle frame, its characterized in that: the electric telescopic leg comprises a leg body, a leg body lifting assembly, a leg body overturning assembly, a leg body electric telescopic rod, a back body electric telescopic rod and a leg body electric telescopic rod, wherein the leg body electric telescopic rod is obliquely arranged, the back body electric telescopic rod is obliquely arranged, one end of the leg body electric telescopic rod is hinged to the leg body lifting assembly, the other end of the leg body electric telescopic rod is hinged to the supporting frame, one end of the back body electric telescopic rod is hinged to the back body overturning assembly, the other end of the back body electric telescopic rod is hinged to the supporting frame, the lower end face of the supporting frame is a shelving reference surface, and the leg body electric telescopic rod and the back body electric telescopic rod are integrally located above the shelving reference surface.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the back overturning assembly comprises a lower section overturning frame and an upper section overturning frame, the upper section overturning frame is far away from the middle frame relative to the lower section overturning frame, the lower section overturning frame is rotatable relative to the support frame, the upper section overturning frame is hinged with the lower section overturning frame, the upper section overturning frame is rotatable to a first limit position relative to the lower section overturning frame, and one end of the back electric telescopic rod is hinged with the upper section overturning frame; in the process that the back overturning assembly is overturned upwards from the initial position, the upper section overturning frame rotates before the lower section overturning frame until the upper section overturning frame rotates to the first limit position and then rotates together with the lower section overturning frame.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the upper section upset frame can rotate between first extreme position and second extreme position for the lower section upset frame, when the upper section upset frame is located the second extreme position, is the angular position of flat angle between upper section upset frame and the lower section upset frame.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the lower section upset frame is provided with first connecting piece, the upper section upset frame is provided with the second connecting piece, and first connecting piece and second connecting piece are articulated mutually, are provided with the locating pin on the first connecting piece, are provided with first spacing limit and second spacing limit on the second connecting piece, make the upper section upset frame obtain first extreme position when first spacing limit contacts with the locating pin, make the upper section upset frame obtain second extreme position when second spacing limit contacts with the locating pin.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: when the upper section overturning frame is contacted with the supporting frame, the included angle between the axis of the back electric telescopic rod and the horizontal line is 170 ^.~178.5^..

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: still include first connecting seat, the second connecting seat, third connecting seat and fourth connecting seat, first connecting seat is fixed in back upset subassembly, the one end of back electric telescopic handle articulates with first connecting seat mutually, the second connecting seat is fixed in on the first crossbeam of support frame, the other end of back electric telescopic handle articulates with the second connecting seat mutually, the third connecting seat is fixed in shank lifting subassembly, shank electric telescopic handle's one end articulates with the third connecting seat mutually, the fourth connecting seat is fixed in on the second crossbeam of support frame, shank electric telescopic handle's the other end articulates with the fourth connecting seat mutually.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: one end of the first connecting seat is fixed with the outer end cross beam of the upper section overturning frame, the other end of the first connecting seat extends to the inner side of the lower cross beam of the support and is hinged with one end of the back electric telescopic rod, and the first connecting seat is provided with a horizontal section which is used for being placed on the lower cross beam of the support.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the support frame includes first underframe and second underframe, is provided with on the first underframe middle frame and back upset subassembly, is provided with shank lifting subassembly on the second underframe, and first underframe is provided with the third connecting piece, two underframes are provided with the fourth connecting piece, and the third connecting piece articulates with the fourth connecting piece mutually, and after the second underframe was overturned downwards, fold with the longeron of second underframe being located the side position of the longeron of first underframe.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the third connecting piece is provided with a first limiting part, the fourth connecting piece is provided with a second limiting part, and after the first bottom frame and the second bottom frame are unfolded, the first limiting part and the second limiting part are contacted to limit excessive rotation.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the first limiting component is a notch, and the second limiting component is a positioning column.

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

the mattress frame adopts the structure that the leg electric telescopic rods and the back electric telescopic rods are integrally positioned above the rest reference surface, so that when the mattress frame is used on a traditional bed by the rest reference surface, the traditional bed interferes with the leg electric telescopic rods, and the traditional bed and the back electric telescopic rods are stably placed, thereby realizing a display frame, and the mattress frame can be directly used on the traditional bed.

On the other hand, in the other hand,

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a schematic diagram of the overall structure of the present utility model.

Fig. 3 is a cross-sectional view of the present utility model.

Fig. 4 is a partial structural schematic diagram of the present utility model.

Fig. 5 is a cross-sectional view of a partial structure of the present utility model.

Fig. 6 is a partial schematic structural view of the present utility model.

Fig. 7 is a folded state diagram of the present utility model.

In the figure, 1, a supporting frame; 2. a middle frame; 3. a back flip assembly; 4. a leg lifting assembly; 5. leg electric telescopic rod; 6. a back electric telescopic rod; 7. a first connection base; 8. a second connecting seat; 9. a first cross beam of the support frame; 10. longitudinal beams of the support frame; 11. a third connecting seat; 12. a fourth connecting seat; 13. a second cross beam of the support frame; 14. a first connector; 15. a second connector; 16. a positioning pin; 17. a first limit edge; 18. the second limit edge; 19. the outer end beam of the upper section overturning frame; 20. a first bottom frame; 21. a second bottom frame; 22. a longitudinal beam of the first bottom frame; 23. a longitudinal beam of the second bottom frame; 24. a third connecting member; 25. a first limiting member; 26. a fourth connecting member; 27. a second limiting member; 28. a rest reference surface; 29. a lower section overturning frame; 30. an upper section overturning frame; 31. lower cross beam of support, 32, horizontal section.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments, and it is apparent that the described embodiments are only some of 16 embodiments of the present application, but not all embodiments. All other embodiments, based on the examples given, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the application.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

In this embodiment, a mattress frame, including support frame 1, be provided with middle frame 2 on support frame 1, back upset subassembly 3, shank lifting unit 4, back upset subassembly 3 is located one side of middle frame 2, shank lifting unit 4 is located the opposite side of middle frame 2, still include shank electric telescopic handle 5 and back electric telescopic handle 6, shank electric telescopic handle 5's one end articulates with shank lifting unit 4 mutually, shank electric telescopic handle 5's the other end articulates with support frame 1 mutually, back electric telescopic handle 6's one end articulates with back upset subassembly 3 mutually, back electric telescopic handle 6's the other end articulates with support frame 1 mutually, support frame 1's lower terminal surface is for shelving reference surface 28, shank electric telescopic handle 5 and back electric telescopic handle 6 wholly are located the top of shelving reference surface 28. In this embodiment, the back electric telescopic rod 6 and the leg electric telescopic rod 5 are each provided obliquely, as shown in fig. 3.

As for the mounting structure of the back electric telescopic rod 6 and the leg electric telescopic rod 5, as shown in the drawing, the back electric telescopic rod 6 is mounted through the first connection base 7 and the second connection base 8. In this embodiment, the first connecting seat 7 is fixed on the back overturning assembly 3, and one end of the back electric telescopic rod 6 is hinged with the first connecting seat 7, so that the one end of the back electric telescopic rod 6 is hinged with the back overturning assembly 3. The second connecting seat 8 is fixed on the first cross beam 9 of the support frame, and the other end of the back electric telescopic rod 6 is hinged with the second connecting seat 8, so that the other end of the back electric telescopic rod 6 is hinged with the support frame 1. In the overall height direction of the mattress frame, the first connecting seat 7 is higher than the second connecting seat 8, and therefore, the back electric telescopic rod 6 is obliquely arranged. In the present embodiment, the lower end surface of the girder 10 of the support frame is the plane with the lowest height position on the support frame 1, so the lower end surface of the girder 10 of the support frame is used as the resting reference surface 28, and in specific application, the resting reference surface 28 is directly contacted with the conventional bed, and the mattress frame is stably placed on the conventional bed by using the resting reference surface 28. The back electric telescopic rod 6 is integrally positioned above the rest reference surface 28, namely, the back electric telescopic rod 6, the second connecting seat 8 and other mounting accessories are positioned above the rest reference surface 28 in the height direction of the mattress frame, and after the mattress frame is placed on a traditional bed, the traditional bed is not contacted with the back electric telescopic rod 6. As shown in the figure, the leg motor-operated telescopic rod 5 is installed through a third connecting seat 11 and a fourth connecting seat 12, the third connecting seat 11 is fixed to the leg lifting assembly 4, and one end of the leg motor-operated telescopic rod 5 is hinged to the third connecting seat 11, thereby realizing that one end of the leg motor-operated telescopic rod 5 is hinged to the leg lifting assembly 4. The fourth connecting seat 12 is fixed on the second cross beam 13 of the support frame, and the other end of the leg electric telescopic rod 5 is hinged with the fourth connecting seat 12, so that the other end of the leg electric telescopic rod 5 is hinged with the support frame 1. In the height direction, the third connecting seat 11 is higher than the fourth connecting seat 12, and therefore, the leg motor-driven telescopic rod 5 is disposed obliquely. In the present embodiment, the lower end surface of the longitudinal beam 10 of the support frame is used as the rest reference surface 28, and the leg electric telescopic rod 5 is integrally located above the rest reference surface 28, that is, the leg electric telescopic rod 5, the fourth connecting seat 12 and other mounting accessories are located above the rest reference surface 28.

In the present utility model, since the section electric telescopic rod and the back electric telescopic rod 6 are integrally located above the resting reference surface 28, the mattress frame is not interfered to be used with the resting reference surface 28 on a conventional bed, and stable placement is ensured. For the situation that the bed surface of the traditional bed for the contact of the rest reference surface is uneven, a thin soft cushion can be placed to obtain the stable placement of the mattress frame.

In this embodiment, the back overturning assembly 3 includes a lower section overturning frame 29 and an upper section overturning frame 30, the upper section overturning frame 30 is far away from the middle frame 2 relative to the lower section overturning frame 29, the lower section overturning frame 29 is rotatable relative to the supporting frame 1, and when the back overturning assembly 3 is overturned upwards under the action of the back electric telescopic rod, the lower section overturning frame 9 rotates around the hinge shaft of the supporting frame. The upper section turning frame 30 is hinged with the lower section turning frame 29. In this embodiment, as shown in the drawing, the lower section turning frame 29 is provided with a first connecting member 14, the upper section turning frame 30 is provided with a second connecting member 15, the first connecting member 14 and the second connecting member 15 are hinged, and the upper section turning frame 30 is hinged to the lower section turning frame 29 by means of the hinge structure of the first connecting member 14 and the second connecting member 15. The upper section turn frame 30 is rotatable to a first limit position with respect to the lower section turn frame 29. In this embodiment, one end of the back electric telescopic rod 6 is hinged to the upper section turning frame 30. In this structure, the back electric telescopic rod 6 provides a thrust force to turn the upper turn frame 30 upward. During the upward turning of the back turnover assembly 3 from the initial position (the state in which the upper-stage turnover frame 30 is laid flat on the support frame 1 as shown in fig. 1), the upper-stage turnover frame 30 rotates before the lower-stage turnover frame 29 until the upper-stage turnover frame 30 rotates to the first limit position and then rotates together with the lower-stage turnover frame 29. In this embodiment, the rotation range of the upper section turning frame 30 relative to the lower section turning frame 29 is limited, and the limited position is when the upper section turning frame 30 is located at the first limit position, and when the upper section turning frame 30 and the lower section turning frame 29 form a larger obtuse angle position, the thrust of the back electric telescopic rod 6 during operation can be transmitted to the lower section turning frame 29 through the upper section turning frame 30, so that the back turning assembly 3 is turned upwards.

In the present utility model, by employing the upper stage turning frame 30 and the lower stage turning frame 29 to form a hinge with the first limit position of the upper stage turning frame 30, the back electric telescopic rod 6 can be set to a relatively flat installation angle. When the mattress frame is applied specifically, after the mattress frame normally bears the weight of a human body, the weight borne by the upper section turnover mechanism relative to the lower section turnover mechanism is small, and the upper section turnover frame 30 is easy to push, and the upper section turnover frame 30 can be pushed to rotate even if the upper section turnover frame 30 is at a flatter installation angle, when the upper section turnover frame 30 rotates to a first limit position, the inclination of the back electric telescopic rod 6 becomes large (the included angle between the back electric telescopic rod 6 and the vertical direction becomes small), in this state, the back electric telescopic rod 6 continues to work, and the back electric telescopic rod 6 applies thrust to the upper section turnover mechanism and the lower section turnover mechanism as a whole, so that the upper section turnover mechanism and the lower section turnover mechanism integrally upwards overturn, and the back turnover assembly 3 overturns to a leaning angle for enabling the human body to obtain comfort. It will be appreciated that in the initial state of a conventional integrated back tilt frame, if the back motor-operated telescopic rod is at a relatively flat mounting angle, the component force for tilting the back tilt frame upwards is relatively small in operation, and thus the integrated back tilt frame is not easily pushed.

The upper section overturning frame 30 and the lower section overturning frame 29 are overturned in a sectional way, so that the back electric telescopic rod 6 can be set to be in a relatively flat inclined state, and when the upper section overturning frame 30 is in contact with the supporting frame 1, the included angle a between the axis of the back electric telescopic rod 6 and the horizontal line can reach 170 ^.~178.5^.. It is also the back electric telescopic rod 6 that can be mounted in a relatively flat inclined state, so that the overall structure of the mattress frame can be designed to be relatively thin. Thus, the whole thickness of the mattress frame after the soft cushion is used can not be too thick, and a technical solution is provided for popularizing the application of the mattress frame placed on a traditional bed.

In this embodiment, the first connecting piece 14 is provided with a positioning pin 16, the positioning pin 16 is located at the right lower side of the hinge shafts of the first connecting piece 14 and the second connecting piece 15, the second connecting piece 15 is provided with a first limiting edge 17 and a second limiting edge 18, and when the positioning pin 16 contacts with the first limiting edge 17, the upper section turning frame 30 obtains a first limiting position in the process that the back turning assembly 3 is turned up from the initial position. When the positioning pin 16 is connected with the second limiting edge 18, that is, when the upper section turning frame 30 is at the second limiting position, the spreading angle of the upper section turning frame 30 and the lower section turning frame 29 can be further limited. In this way, the upper section turning frame 30 is rotatable between a first limit position and a second limit position with respect to the lower section turning frame 29. Generally, when the upper turn frame 30 is in the second extreme position, the upper turn frame 30 is in a flat angular position with respect to the lower turn frame 29.

As an equivalent implementation of the above structure, the positioning pin 16 may be disposed on the second connecting member 15, and the first limiting edge 17 and the second limiting edge 18 may be disposed on the first connecting member 14.

As another embodiment structure in which the upper stage turning frame 30 is rotatable between the first limit position and the second limit position with respect to the lower stage turning frame 29, an arc-shaped groove centered on the hinge shafts of the first link 14 and the second link 15 may be provided in the second link 15, and the upper stage turning frame 30 may be rotated to the limit position by providing the arc-shaped groove and the positioning pin 16.

In this embodiment, one end of the first connecting seat 7 is fixed with the outer end beam 19 of the upper section turning frame, the other end of the first connecting seat 7 extends to the inner side of the lower beam 31 of the support and one end of the back electric telescopic rod 6 is hinged, and the first connecting seat 7 is provided with a horizontal section 32 for resting on the lower beam 31 of the support. As shown in the figure, the outer end beam 19 of the upper section turning frame is located at the outermost side of the upper section turning frame 30, so that after the first connecting seat 7 is fixed on the outer end beam 19 of the upper section turning frame, the back electric telescopic rod 6 obtains a longer force arm, and the back electric telescopic rod 6 can push the upper section turning frame 30 in an initial stage.

In this embodiment, the support frame 1 includes a first bottom frame 20 and a second bottom frame 21, the first bottom frame 20 is provided with the middle frame 2 and the back overturning assembly 3, the second bottom frame 21 is provided with a leg lifting assembly 4, the leg lifting assembly 4 is hinged on a beam of the second bottom frame 21, which is independent from the middle frame 2, the first bottom frame 20 is provided with a third connecting piece 24, the second bottom frame 21 is provided with a fourth connecting piece 26, the third connecting piece 24 and the fourth connecting piece 26 are hinged, and after the second bottom frame 21 is overturned downwards, the longitudinal beams 23 of the second bottom frame are located at the lateral positions of the longitudinal beams 22 of the first bottom frame. In general, the distance between the two stringers of the first bottom frame 20 is small, the distance between the two stringers of the second bottom frame 21 is large, as shown in the figure, after the first bottom frame 20 and the second bottom frame 21 are folded together, the stringers 22 of the first bottom frame and the stringers 23 of the second bottom frame are at the same height in the overall thickness direction, and the stringers 22 of the first bottom frame are on the inner side and the stringers 23 of the second bottom frame are on the outer side. In another embodiment, the distance between the two stringers of the first bottom frame 20 is larger and the distance between the two stringers of the second bottom frame 21 is smaller, the stringers 22 of the first bottom frame being on the outside and the stringers 23 of the second bottom frame being on the inside after folding. The mattress frame has a smaller thickness after folding due to the overlapping structure, so as to be suitable for transportation.

In this embodiment, the third connecting piece 24 is provided with a first limiting member 25, the fourth connecting piece 26 is provided with a second limiting member 27, and the first limiting member 25 and the second limiting member 27 contact to limit excessive rotation after the first bottom frame 20 and the second bottom frame 21 are unfolded. By adopting this structure, when a human body sits above the connection position of the first and second bottom frames 20 and 21, the two ends of the mattress frame can be prevented from being lifted. In this embodiment, the first limiting member 25 adopts a notch structure, and the second limiting member 27 adopts a positioning column structure. As another example, a locating post may be provided on the third connector 24 and a recess may be provided on the fourth connector 26.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a mattress frame, includes the support frame, is provided with middle frame, back upset subassembly, shank lifting subassembly on the support frame, and back upset subassembly is located one side of middle frame, and shank lifting subassembly is located the opposite side of middle frame, its characterized in that: the electric telescopic leg comprises a leg body, a leg body lifting assembly, a leg body overturning assembly, a leg body electric telescopic rod, a back body electric telescopic rod and a leg body electric telescopic rod, wherein the leg body electric telescopic rod is obliquely arranged, the back body electric telescopic rod is obliquely arranged, one end of the leg body electric telescopic rod is hinged to the leg body lifting assembly, the other end of the leg body electric telescopic rod is hinged to the supporting frame, one end of the back body electric telescopic rod is hinged to the back body overturning assembly, the other end of the back body electric telescopic rod is hinged to the supporting frame, the lower end face of the supporting frame is a shelving reference surface, and the leg body electric telescopic rod and the back body electric telescopic rod are integrally located above the shelving reference surface.

2. A mattress frame according to claim 1, characterized in that: the back overturning assembly comprises a lower section overturning frame and an upper section overturning frame, the upper section overturning frame is far away from the middle frame relative to the lower section overturning frame, the lower section overturning frame is rotatable relative to the support frame, the upper section overturning frame is hinged with the lower section overturning frame, the upper section overturning frame is rotatable to a first limit position relative to the lower section overturning frame, and one end of the back electric telescopic rod is hinged with the upper section overturning frame; in the process that the back overturning assembly is overturned upwards from the initial position, the upper section overturning frame rotates before the lower section overturning frame until the upper section overturning frame rotates to the first limit position and then rotates together with the lower section overturning frame.

3. A mattress support as claimed in claim 2, wherein: the upper section upset frame can rotate between first extreme position and second extreme position for the lower section upset frame, when the upper section upset frame is located the second extreme position, is the angular position of flat angle between upper section upset frame and the lower section upset frame.

4. A mattress support as claimed in claim 3, wherein: the lower section upset frame is provided with first connecting piece, the upper section upset frame is provided with the second connecting piece, and first connecting piece and second connecting piece are articulated mutually, are provided with the locating pin on the first connecting piece, are provided with first spacing limit and second spacing limit on the second connecting piece, make the upper section upset frame obtain first extreme position when first spacing limit contacts with the locating pin, make the upper section upset frame obtain second extreme position when second spacing limit contacts with the locating pin.

5. A mattress support as claimed in claim 2, wherein: when the upper section overturning frame is contacted with the supporting frame, the included angle between the axis of the back electric telescopic rod and the horizontal line is 170-178.5 degrees.

6. A mattress support as claimed in claim 2, wherein: still include first connecting seat, the second connecting seat, third connecting seat and fourth connecting seat, first connecting seat is fixed in back upset subassembly, the one end of back electric telescopic handle articulates with first connecting seat mutually, the second connecting seat is fixed in on the first crossbeam of support frame, the other end of back electric telescopic handle articulates with the second connecting seat mutually, the third connecting seat is fixed in shank lifting subassembly, shank electric telescopic handle's one end articulates with the third connecting seat mutually, the fourth connecting seat is fixed in on the second crossbeam of support frame, shank electric telescopic handle's the other end articulates with the fourth connecting seat mutually.

7. A mattress frame as claimed in claim 6, wherein: one end of the first connecting seat is fixed with the outer end cross beam of the upper section overturning frame, the other end of the first connecting seat extends to the inner side of the lower cross beam of the support and is hinged with one end of the back electric telescopic rod, and the first connecting seat is provided with a horizontal section which is used for being placed on the lower cross beam of the support.

8. A mattress frame according to claim 1, characterized in that: the support frame includes first underframe and second underframe, is provided with on the first underframe middle frame and back upset subassembly, is provided with shank lifting subassembly on the second underframe, and first underframe is provided with the third connecting piece, two underframes are provided with the fourth connecting piece, and the third connecting piece articulates with the fourth connecting piece mutually, and after the second underframe was overturned downwards, fold with the longeron of second underframe being located the side position of the longeron of first underframe.

9. A mattress frame as claimed in claim 8, wherein: the third connecting piece is provided with a first limiting part, the fourth connecting piece is provided with a second limiting part, and after the first bottom frame and the second bottom frame are unfolded, the first limiting part and the second limiting part are contacted to limit excessive rotation.

10. A mattress support as claimed in claim 9, wherein: the first limiting component is a notch, and the second limiting component is a positioning column.