CN112205809B

CN112205809B - Hardness-adjustable mattress

Info

Publication number: CN112205809B
Application number: CN202011125952.8A
Authority: CN
Inventors: 祝增荣
Original assignee: Shanghai Longfeng Soft Furniture Co ltd
Current assignee: Shanghai Longfeng Soft Furniture Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2022-08-26
Anticipated expiration: 2040-10-20
Also published as: CN112205809A

Abstract

The utility model relates to a mattress with adjustable hardness relates to mattress technical field, and it includes the soft layer in top, the below on the soft layer in top is provided with the laminating buffering portion that is used for laminating human body curve, laminating buffering portion includes the compression spring that a plurality of interval arrays set up, arbitrary compression spring all is vertical setting, it is provided with the stereoplasm bed board to go up and down in the laminating buffering portion, the quantity and the position that the stereoplasm bed board corresponds compression spring are worn to be equipped with and are formed grafting complex wearing and establishing hole with compression spring, four contained angles departments of stereoplasm bed board all rotate and are provided with the supporting leg that is used for supporting the stereoplasm bed board, arbitrary the axis of rotation of supporting leg all is the level setting, the below of laminating buffering portion is provided with supporting baseplate. This application utilizes the stereoplasm bed board of liftable regulation and fixed setting, realizes that this soft mattress and the regulation between the hard mattress change to adapt to different crowds.

Description

Mattress with adjustable hardness

Technical Field

The application relates to the technical field of mattresses, in particular to a mattress with adjustable hardness.

Background

The mattress is an article between a human body and a bed, which is used for ensuring that consumers can obtain healthy and comfortable sleep, the mattress is made of various materials, and mattresses made of different materials can bring different sleep effects to people. Among them, the spring mattress is used by consumers.

Spring mattresses in the related art generally utilize compression spring as the buffer medium of mattress for this mattress plays the body shape of laminating people, and the effect of dispersion pressure improves people's sleep quality.

In real life, for some crowds suffering from lumbar vertebra diseases, the mattress is not suitable for sleeping on a spring mattress with large buffering degree, the people need to sleep on a harder mattress, for some young crowds, the mattress is more suitable for sleeping on the spring mattress, if the spring mattress in the related technology is adopted, the buffering degree of the mattress can not be adjusted, so that the mattress can only be suitable for a specific crowd, the applicability is poor, and a part to be improved exists.

Disclosure of Invention

In order to adjust the hardness of mattress, improve its suitability, this application provides a mattress with adjustable hardness.

The application provides a mattress with adjustable hardness adopts following technical scheme:

a mattress with adjustable hardness comprises a top soft layer, a jointing buffer part for jointing the curve of a human body is arranged below the top soft layer, the jointing buffer part comprises a plurality of compression springs arranged at intervals in an array, any one of the compression springs is vertically arranged, a hard bed board is arranged in the joint buffer part in a lifting way, the hard bed board is provided with through holes which are matched with the compression springs in an inserting way corresponding to the number and the positions of the compression springs in a penetrating way, the four included angles of the hard bed board are all rotationally provided with supporting legs for supporting the hard bed board, the rotating axis of any one of the supporting legs is horizontally arranged, a support bottom plate is arranged below the joint buffer part, when any support leg rotates to a vertical state, the hard bed board is attached to the top soft layer, and the end parts, far away from the hard bed board, of the supporting legs are abutted to the supporting bottom board.

By adopting the technical scheme, in actual use, a user can lie on the top soft layer attached to the upper side of the buffer part, so that the upper surface of the mattress is attached to a human sleep curve, and the sleep quality of people suitable for a soft bed is improved; when the patient needs to lie on the hard mattress, the hard mattress is lifted to be attached to the top soft layer, then the four support legs are rotated to be vertical, the end part, far away from the hard mattress, of each support leg is supported and abutted on the support bottom plate, and further the top soft layer cannot be sunken, so that the hard mattress is replaced, and the patient is suitable for some people suffering from lumbar diseases; the hardness of this mattress is adjustable promptly, realizes the regulation between this soft mattress and the hard mattress and changes, improves the suitability of this mattress.

Preferably, be provided with lift buffering portion between laminating buffering portion and the supporting baseplate, lift buffering portion includes first backup pad, second backup pad and adjusting spring, compression spring keeps away from the fixed setting in first backup pad of one end on top soft matter layer, the second backup pad is located between first backup pad and the supporting baseplate, just the second backup pad is provided with a plurality ofly along vertical direction interval, adjusting spring is located between second backup pad and the first backup pad, between the adjacent second backup pad, all is provided with a plurality ofly between second backup pad and the supporting baseplate.

Through adopting above-mentioned technical scheme, in the in-service use, laminating buffering portion mainly acts on and makes the human curve of top soft layer laminating, for the human pressure that releases more, and lift buffering portion mainly acts on and realizes the mattress in the ascending elastic buffer function of vertical side, utilizes first backup pad and a plurality of backup pad, helps making adjusting spring carry out elastic contraction in vertical direction, reduces its crooked that produces on the horizontal direction.

Preferably, the lifting buffer part further comprises a first type of supporting component, a second type of supporting component and a third type of supporting component, four corners of the first type of supporting component between the second supporting plate and the first supporting plate are provided with one, four corners of the second type of supporting component between the adjacent second supporting plates are provided with one, three corners of the third type of supporting component between the second supporting plate and the supporting base plate are provided with one, the first type of supporting component, the second type of supporting component and the third type of supporting component both comprise telescopic rods and fixing sleeves, the telescopic rods in the first type of supporting component are vertically and fixedly arranged on one side of the first supporting plate deviating from the top soft layer, the telescopic rods in the second type of supporting component and the third type of supporting component are vertically and fixedly arranged on one side of the second supporting plate deviating from the top soft layer, the fixing sleeves in the first type of supporting component and the second type of supporting component are vertically and fixedly arranged on one side of the second supporting plate close to the top soft layer And one side of the layer is vertically and fixedly arranged on one side of the supporting bottom plate close to the top soft layer by the fixing sleeve in the three types of supporting assemblies, and the respective telescopic rods of the first type of supporting assembly, the second type of supporting assembly and the third type of supporting assembly and the fixing sleeve are in splicing fit along the vertical direction.

By adopting the technical scheme, the lifting buffer part further improves the lifting buffer function in the vertical direction by utilizing the insertion fit between the telescopic rods and the fixed sleeves in the first-class supporting assembly, the second-class supporting assembly and the third-class supporting assembly.

Preferably, the first-type supporting assembly, the second-type supporting assembly and the third-type supporting assembly further comprise inserting pins, a first inserting hole and a second inserting hole penetrate through any one of the fixing sleeve and the telescopic rod along the horizontal direction, and the inserting pins in the first-type supporting assembly, the second-type supporting assembly and the third-type supporting assembly are sequentially inserted into the first inserting hole and the second inserting hole in the fixing sleeve and the telescopic rod respectively.

Through adopting above-mentioned technical scheme, in-service use, the user can be according to the elastic buffering requirement of self to the mattress, utilize the grafting round pin to peg graft in corresponding first spliced eye and the second spliced eye on fixed sleeve and telescopic link in proper order, with the clearance between fixed first backup pad and second backup pad or between adjacent second backup pad or between second backup pad and the supporting baseplate, make between first backup pad and the second backup pad or between adjacent second backup pad or between second backup pad and the supporting baseplate regulating spring can't play the elastic buffering effect, and then adjust the buffering elasticity of lift buffer, in order to satisfy user's different demands.

Preferably, a guide rod is vertically and fixedly arranged on one side, close to the first support plate, of the hard bed board, and a guide seat which is in plug-in sliding fit with the guide rod is arranged on the first support plate.

Through adopting above-mentioned technical scheme, utilize the grafting cooperation of sliding between guide bar and the guide holder for stereoplasm bed board can not produce the interference with compression spring at the lift in-process, improves the stability that stereoplasm bed board goes up and down.

Preferably, the guide rod is fixedly arranged in the middle of the hard bed board.

Through adopting above-mentioned technical scheme, should fix the middle part that sets up at the stereoplasm bed board with the direction, further improved the stability that the stereoplasm bed board goes up and down.

Preferably, the soft layer in top all is provided with the stereoplasm board layer with arbitrary compression spring's junction, just the stereoplasm board layer includes the butt lug and the inlay piece that an organic whole set up along the direction of keeping away from the soft layer in top in proper order, all be provided with the ladder boss on the pore wall of arbitrary wear-to-establish hole on the stereoplasm bed board, the butt lug is all inlayed with the inlay piece and is established in wearing to establish the hole, just butt lug and butt boss looks butt, the butt lug is laminated with the stereoplasm bed board mutually near the surface on the soft layer in top.

Through adopting above-mentioned technical scheme, in the in-service use, when stereoplasm bed board rises to laminating mutually with the soft layer in top, wear to establish hole and stereoplasm sheet layer looks butt on the stereoplasm bed board for the stereoplasm sheet layer laminates mutually with the surface of stereoplasm bed board, and at this moment, butt boss and ladder boss looks butt in the wear to establish the hole play spacing effect downwards to the stereoplasm sheet layer, take place to cave in compression spring department for prevent the stereoplasm bed board.

Preferably, the supporting legs are connected with one ends, far away from the top soft layer, of the supporting legs to form an arc-shaped abutting surface and a horizontal supporting surface, and the horizontal supporting surface is abutted to the supporting base plate.

Through adopting above-mentioned technical scheme, utilize arc butt face, the user of being convenient for is with the vertical support of supporting leg on supporting baseplate.

In summary, the present application includes at least one of the following beneficial technical effects:

the hard bed board which can be adjusted in a lifting mode and is fixedly arranged is utilized, adjustment and transformation between the soft mattress and the hard mattress are achieved, and the applicability of the mattress is improved;

with the help of the first supporting plate, the second supporting plate arranged adjacently up and down, the first type of supporting component, the second type of supporting component and the third type of supporting component, the lifting buffering part can realize the buffering adjustment in the vertical direction, and the requirements of users on different elasticity of mattresses can be met.

Drawings

FIG. 1 is an isometric view of a mattress with adjustable firmness when a hard bed deck is lifted to engage a top soft layer according to an embodiment of the present application;

FIG. 2 is a sectional view of the embodiment of the present application, which mainly shows that the hard bed board is placed on the first supporting plate and the supporting legs are retracted in the mattress with adjustable hardness;

FIG. 3 is a partial enlarged view of portion A in FIG. 2, which mainly shows the structure of the hard plate layer, the through holes, the guide rods and the guide seats in the embodiment of the present application;

fig. 4 is a partial enlarged view of a portion B in fig. 2, and the embodiment of the present application mainly shows a sectional view of three types of support member structures.

Reference numerals: 1. a top softer layer; 2. a bonding buffer part; 21. a compression spring; 3. a lifting buffer part; 31. a first support plate; 311. a guide seat; 32. a second support plate; 321. avoiding holes; 33. adjusting the spring; 34. a type of support member; 35. a second type of support assembly; 36. three types of support components; 361. a telescopic rod; 3611. a second plug hole; 362. fixing the sleeve; 3621. a first plug hole; 363. a plug pin; 4. a support base plate; 5. a hard bed board; 51. perforating holes; 511. a stepped boss; 52. a guide bar; 6. supporting legs; 61. an arc-shaped abutting surface; 62. a horizontal support surface; 7. a hard plate layer; 71. abutting against the bump; 72. and embedding the blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses mattress with adjustable hardness.

Referring to fig. 1 and 2, the mattress with adjustable hardness comprises a top soft layer 1, wherein the top soft layer 1 comprises a milk fiber fabric, a non-woven fabric, a high-density sponge, a non-woven fabric and a hot melt felt which are sequentially connected by sewing by using a needle thread technology from top to bottom so as to improve the comfort level of the surface of the mattress; the flexible layer 1 below in top has set gradually and has been used for the curved laminating buffering portion 2 of human body of laminating, is used for providing the lift buffering portion 3 of elasticity buffer power and the supporting baseplate 4 that plays the supporting role in vertical direction, and laminating buffering portion 2 includes the compression spring 21 that a plurality of interval arrays set up, and arbitrary compression spring 21 all is vertical setting, and the both ends of arbitrary compression spring 21 vertical direction are fixed respectively on flexible layer 1 in top and lift buffering portion 3. Go up and down to be provided with stereoplasm bed board 5 in laminating buffer 2, stereoplasm bed board 5 corresponds compression spring 21's quantity and position and wears to be equipped with and forms grafting complex wearing and establishing hole 51 with compression spring 21, and four contained angles departments of stereoplasm bed board 5 all are connected with the supporting leg 6 that is used for supporting stereoplasm bed board 5 through the rotation of axis of rotation round pin, the axis of rotation of arbitrary supporting leg 6 all is the level setting and is parallel to each other, when arbitrary supporting leg 6 rotates to vertical state, stereoplasm bed board 5 laminates with the bottom of top soft layer 1 mutually, and the tip butt that stereoplasm bed board 5 was kept away from to this supporting leg 6 is on supporting baseplate 4.

Referring to fig. 1 and 2, in order to facilitate a user to support four support legs 6 on the support base plate 4, one end of each support leg 6, which is far away from the top soft layer 1, is provided with two arc-shaped abutting surfaces 61 and two horizontal supporting surfaces 62 in a connected manner, the two arc-shaped abutting surfaces 61 are symmetrically arranged relative to the two horizontal supporting surfaces 62, and each horizontal supporting surface 62 abuts against the upper surface of the support base plate 4.

In actual use, the user retrieves four supporting legs 6 to the horizontality, and the user can lie on the soft layer of top 1 of laminating buffer 2 upside this moment, under the effect of the compression spring 21 of soft layer of top 1 and interval array setting for the upper surface laminating human sleep curve of this mattress, and then improve the sleep quality that is fit for soft bed crowd.

When a user needs to lie on the hard mattress, the user raises the hard bed board 5 to be attached to the bottommost layer of the top soft layer 1, then rotates the four supporting legs 6 to be in a vertical state, so that the horizontal supporting surface 6 of each supporting leg 6 is supported and abutted on the supporting bottom plate 4, the top soft layer 1 cannot be influenced by the compression spring 21, and the replacement of the hard mattress is realized, so that the hard mattress is suitable for some people suffering from lumbar diseases; the hardness of the mattress can be adjusted according to the user groups, and the applicability of the mattress is improved.

Referring to fig. 2 and 3, the lifting buffer part 3 includes a first support plate 31, the first support plate 31 is located below the hard bed plate 5, and when the hard bed plate 5 does not need to be lifted, the hard bed plate 5 is placed on the first support plate 31. In order to improve the lifting stability of the hard bed board 5, a guide rod 52 is vertically fixed at one side of the middle part of the hard bed board 5 close to the first support plate 31 by welding, and correspondingly, a guide seat 311 which forms a plug-in fit with the guide rod 52 is installed at the middle part of the first support plate 31.

Referring to fig. 2 and 3, the lower end of any compression spring 21 in the vertical direction is fixed on the first support plate 31 by welding, the upper end of any compression spring 21 in the vertical direction is fixed with a hard plate layer 7 by welding, the hard plate layer 7 sequentially comprises an integrally arranged abutting lug 71 and an embedded block 72 along the direction away from the top soft layer 1, the abutting lug 71 and the embedded block 72 are both arranged in a disc shape, the diameter of the embedded block 72 is smaller than that of the abutting lug 71, and correspondingly, a step boss 511 is integrally formed at the hole wall of the through hole 51 of the hard bed plate 5; when the hard bed board 5 rises to the bottommost layer of the soft layer 1 at the top of the hard bed board, the abutting convex block 71 and the embedding block 72 are embedded in the through hole 51, the abutting convex block 71 is abutted to the stepped boss 511, the surface of the abutting convex block 71, which is close to the soft layer 1 at the top, is attached to the upper surface of the hard bed board 5, namely, the stepped boss 511 in the through hole 51 plays a role in limiting the hard board layer 7 downwards so as to prevent the hard bed board 5 from sinking at the position of the compression spring 21.

Referring to fig. 2 and 3, the lifting buffer part 3 further includes a second support plate 32 and two adjusting springs 33, the second support plate 32 is located between the first support plate 31 and the support base plate 4, and the second support plate 32 is spaced apart from each other in the vertical direction, in this embodiment, the number of the second support plates 32 is two, the adjusting springs 33 are located between the second support plate 32 and the first support plate 31, between adjacent second support plates 32, and between the second support plate 32 and the support base plate 4, and a plurality of the adjusting springs 33 are arranged in an array manner, and any one of the adjusting springs 33 is arranged vertically, and since the fixing manner of any one of the adjusting springs 33 between the second support plate 32 and the first support plate 31, between adjacent second support plates 32, and between the second support plate 32 and the support base plate 4 is the same, the fixing manner of one of the adjusting springs 33 between the second support plate 32 and the first support plate 31 is described as an example, both ends of this adjusting spring 33 vertical direction all pass through welded fastening in the second backup pad 32 and the relative one side of first backup pad 31, and the middle part of the second backup pad 32 that is closest to first backup pad 31 runs through and is used for forming the hole 321 of dodging of grafting complex with guide bar 52, and should dodge hole 321 and guide bar 52 and be clearance fit.

Referring to fig. 2 and 4, the lifting buffer 3 further includes a first-type support member 34, a second-type support member 35, and a third-type support member 36; one supporting component 34 is disposed at each of four corners between the second supporting plate 32 and the first supporting plate 31, one supporting component 35 is disposed at each of four corners between the adjacent second supporting plates 32, and one supporting component 36 is disposed at each of corners between the second supporting plates 32 and the supporting base plate 4. since the first supporting component 34, the second supporting component 35 and the third supporting component 36 have the same structure and installation manner, a third supporting component 36 between the second supporting plate 32 and the supporting base plate 4 is taken as an example for explanation.

Referring to fig. 2 and 4, the three types of support assemblies 36 include a telescopic rod 361, a fixed sleeve 362 and an insertion pin 363, one end of the telescopic rod 361 in the length direction is vertically fixed to one side of the second support plate 32 away from the top soft layer 1 by welding, the fixed sleeve 362 is vertically fixed to one side of the support base plate 4 close to the top soft layer 1 by welding, and the telescopic rod 361 and the fixed sleeve 362 form insertion fit in the vertical direction, so as to help the lifting buffer part 3 to perform elastic buffer strictly in the vertical direction; a first inserting hole 3621 penetrates through one side of the fixing sleeve 362 close to the top soft layer 1 horizontally, a second inserting hole 3611 penetrates through one side of the telescopic rod 361 far away from the top soft layer 1 horizontally, the first inserting hole 3621 and the second inserting hole 3611 are sequentially inserted into the inserting pin 363 to fix the telescopic rod 361, so that the distance between the second supporting plate 32 and the supporting base plate 4 is fixed, and the adjusting spring 33 located between the second supporting plate 32 and the supporting base plate 4 cannot be used.

In practical use, a user can fix the distance between the second support plate 32 and the first support plate 31 or between the adjacent second support plates 32 or between the second support plate 32 and the support bottom plate 4 according to the elasticity requirement of the user on the mattress, so as to stop using the corresponding adjusting spring 33, and realize the elastic buffering of the lifting buffering part 3.

The implementation principle of the mattress with adjustable hardness in the embodiment of the application is as follows:

in actual use, for the crowd who is suitable for the soft bed, a user can lie on the top soft layer 1 which is attached to the upper side of the buffer part 2, and under the action of the top soft layer 1 and the compression springs 21 which are arranged in the spaced array, the upper surface of the mattress is made to be attached to a human body sleep curve, so that the sleep quality of the crowd who is suitable for the soft bed is improved;

for some people suffering from lumbar diseases and suitable for the hard bed, under the guiding action of the guide rod 52 and the guide seat 311, a user raises the hard bed plate 5 to be attached to the bottommost layer of the top soft layer 1, at the moment, the surface of the abutting convex block 71 close to the top soft layer 1 is attached to the upper surface of the hard bed plate 5, and the stepped boss 511 in the through hole 51 plays a role in limiting the hard plate layer 7 downwards so as to prevent the hard bed plate 5 from sinking at the position of the compression spring 21;

then, the four support legs 6 are rotated to be in a vertical state, so that the horizontal support surface 62 of each support leg 6 is supported and abutted on the support base plate 4, the top soft layer 1 is not influenced by the compression spring 21, and the hard mattress is replaced, so that the hard mattress is suitable for people suffering from lumbar diseases; the hardness of the mattress can be adjusted according to the users, so that the applicability of the mattress is improved;

in addition, a user can fix the space between the second support plate 32 and the first support plate 31 or between the adjacent second support plates 32 or between the second support plate 32 and the support bottom plate 4 by using the support assembly according to the elasticity requirement of the user on the mattress, so as to stop using the corresponding adjusting spring 33, and realize the elastic buffering of the lifting buffering part 3.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A mattress with adjustable hardness is characterized in that: comprises a top soft layer (1), a laminating buffering part (2) used for laminating a human body curve is arranged below the top soft layer (1), the laminating buffering part (2) comprises a plurality of compression springs (21) arranged in an interval array, any compression spring (21) is vertically arranged, a hard bed board (5) is arranged in the laminating buffering part (2) in a lifting way, the hard bed board (5) is provided with through holes (51) which are matched with the compression springs (21) in a splicing way in a penetrating way corresponding to the number and the positions of the compression springs (21), supporting legs (6) used for supporting the hard bed board (5) are arranged at four included angles of the hard bed board (5) in a rotating way, the rotating axes of any supporting legs (6) are horizontally arranged, a supporting base plate (4) is arranged below the laminating buffering part (2), and any supporting leg (6) rotates to a vertical state, the hard bed board (5) is attached to the top soft layer (1), and the end parts, far away from the hard bed board (5), of the supporting legs (6) are abutted against the supporting base plate (4);

a plurality of lifting buffer parts (3) are arranged between the attaching buffer part (2) and the supporting bottom plate (4), each lifting buffer part (3) comprises a first supporting plate (31), a second supporting plate (32) and an adjusting spring (33), one end, far away from the soft top layer (1), of each compression spring (21) is fixedly arranged on the corresponding first supporting plate (31), the corresponding second supporting plate (32) is located between the corresponding first supporting plate (31) and the corresponding supporting bottom plate (4), the second supporting plates (32) are arranged in a plurality at intervals in the vertical direction, and the adjusting springs (33) are located between the corresponding second supporting plate (32) and the corresponding first supporting plate (31), between the adjacent second supporting plates (32) and between the corresponding second supporting plates (32) and the corresponding supporting bottom plate (4);

the lifting buffer part (3) further comprises a first type of supporting component (34), a second type of supporting component (35) and a third type of supporting component (36), wherein one supporting component (34) is arranged at four corners between the second supporting plate (32) and the first supporting plate (31), one supporting component (35) is arranged at four corners between the adjacent second supporting plates (32), one supporting component (36) is arranged at each corner between the second supporting plate (32) and the supporting bottom plate (4), the first type of supporting component (34), the second type of supporting component (35) and the third type of supporting component (36) respectively comprise a telescopic rod (361) and a fixed sleeve (362), the telescopic rod (361) in the first type of supporting component (34) is vertically and fixedly arranged on one side, departing from the top soft layer (1), of the first supporting plate (31), the telescopic rods (361) in the second type of supporting component (35) and the third type of supporting component (36) are vertically and fixedly arranged on one side, away from the top soft layer (1), of the second supporting plate (32), the fixing sleeves (362) in the first type of supporting component (34) and the second type of supporting component (35) are vertically and fixedly arranged on one side, close to the top soft layer (1), of the second supporting plate (32), the fixing sleeves (362) in the third type of supporting component (36) are vertically and fixedly arranged on one side, close to the top soft layer (1), of the supporting base plate (4), and the telescopic rods (361) and the fixing sleeves (362) of the first type of supporting component (34), the second type of supporting component (35) and the third type of supporting component (36) are in inserting fit along the vertical direction;

the first-class supporting assembly (34), the second-class supporting assembly (35) and the third-class supporting assembly (36) further comprise inserting pins (363), a first inserting hole (3621) and a second inserting hole (3611) penetrate through any one of the fixing sleeve (362) and the telescopic rod (361) along the horizontal direction, and the inserting pins (363) of the first-class supporting assembly (34), the second-class supporting assembly (35) and the third-class supporting assembly (36) are sequentially inserted into the first inserting hole (3621) and the second inserting hole (3611) of the fixing sleeve (362) and the telescopic rod (361);

a guide rod (52) is vertically and fixedly arranged on one side, close to the first supporting plate (31), of the hard bed plate (5), and a guide seat (311) which is in insertion sliding fit with the guide rod (52) is arranged on the first supporting plate (31);

the guide rod (52) is fixedly arranged in the middle of the hard bed board (5);

the connecting part of the top soft layer (1) and any compression spring (21) is provided with a hard plate layer (7), the hard plate layer (7) sequentially comprises an integrally arranged abutting lug (71) and an embedded block (72) along the direction away from the top soft layer (1), the hole wall of any through hole (51) in the hard bed plate (5) is provided with a step boss (511), the abutting lug (71) and the embedded block (72) are embedded in the through hole (51), the abutting lug (71) is abutted against the step boss (511), and the surface of the abutting lug (71) close to the top soft layer (1) is attached to the hard bed plate (5);

one end of the support leg (6) far away from the top soft layer (1) is connected with an arc-shaped abutting surface (61) and a horizontal support surface (62), and the horizontal support surface (62) is abutted against the support base plate (4).