CN110652125B

CN110652125B - Spine-protecting pressure-relieving bamboo spring deck chair

Info

Publication number: CN110652125B
Application number: CN201911044567.8A
Authority: CN
Inventors: 陈玉霞; 郭勇; 殷媛媛; 任林燕; 石允娇; 骆攀攀; 翁蓓蓓; 程蹈; 王晨欣
Original assignee: Anhui Agricultural University AHAU
Current assignee: Anhui Agricultural University AHAU
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2024-05-31
Anticipated expiration: 2039-10-30
Also published as: CN110652125A

Abstract

The invention provides a spine-protecting and pressure-relieving bamboo elastic piece deck chair, which comprises a support frame, a row framework, armrests and chair legs; the support frame comprises a seat surface frame, a front foot frame and a backrest frame which is rotationally connected with the seat surface frame, and an angle adjusting device is arranged between the backrest frame and the seat surface frame; the rib frame comprises a backrest rib frame, a seat surface rib frame and a front foot rib frame; the backrest row framework is connected with the backrest frame, the seat surface row framework is connected with the seat surface frame, and the front foot row framework is connected with the front foot frame; the armrests and the chair legs are respectively arranged at two sides of the seat frame; the backrest row framework, the seat surface row framework and the forefoot row framework are all composed of a plurality of unit row frameworks, and each unit row framework comprises a bamboo elastic sheet, a sleeve head and a hardness adjusting device. The deck chair can meet different requirements of people with different body types, so that the spine of a human body is in a natural bending state, and meanwhile, pressure relief is realized.

Description

Spine-protecting pressure-relieving bamboo spring deck chair

Technical Field

The invention relates to the field of chairs, in particular to a spine-protecting and pressure-relieving bamboo elastic piece reclining chair.

Background

The spine is a healthy basis and is the source of all diseases. According to statistics, 97% of middle-aged and elderly people in China are suffering from spinal diseases, the number of people under 40 years old suffering from various spinal diseases is up to more than 40%, and the incidence rate of children scoliosis is up to more than 25%. Among them, inadequate support of the lumbar back (particularly the spine) is an important cause of causing or aggravating non-characteristic low back pain, lumbar disc herniation, and the like. Research shows that when a human body sits for rest, the pelvis rotates backwards, the lumbar vertebra deforms, the spine is in an unnatural bending state, the lumbar intervertebral disc is excessively pressed, and the spine health problem is easily caused.

The reclining chair is a comfortable sign as a furniture representative with two functions of sitting and lying, and is widely applied to the life of people. However, it is often easy to ignore that if the back support is not reasonable, and especially if the lumbar support is insufficient, the spine is in an unnatural bending state when the reclining chair is used, and the spine is diseased. Because the body types of each person are different, the supporting positions are different when the deck chair is used, and the supporting requirements for all parts are also different, so that in the deck chair design, how to adapt to the different requirements of people with different body types, the requirements of more people are met to the greatest extent, and therefore, the spine health is one of the most critical problems which cannot be ignored.

However, the deck chairs in the market at present are designed mainly for the modeling, have fewer designs in functional aspects, and cannot realize reasonable spinal support. Most importantly, the deck chair on the market has single mode, is only suitable for one type of body, can not meet different requirements of people with different types of body through transformation and adjustment, and can not adapt to the body types of various people, so that waist soreness and back pain are usually generated when the deck chair is used for a long time, and the health of a human body is greatly endangered. In addition, pressure relief is also one of the key issues affecting the comfort of use of the lounge chair, mainly because the pressure relief effect is related to the local skin of the human body. The slow-pressing effect is poor, and then the body local tissues are pressed for a long time, the blood circulation is impaired, and the local tissues are continuously ischemic, anoxic and nutritional deficiency, so that people are promoted to turn over continuously, and the comfort and the rest quality are influenced. Most of deck chairs in the market at present adopt hard surface design, have higher hardness and too concentrated pressure, are easy to cause uncomfortable feeling such as leg numbness and the like, and are not beneficial to pressure relief; or a thick cushion design is adopted, so that the use in summer is easy to produce a smoldering sensation, and the use comfort can not be ensured.

Accordingly, there is an urgent need to improve the existing reclining chair to obtain a novel reclining chair that can meet different demands of people of different body types, ensure that the spine of the human body is in a natural bending state, and simultaneously realize pressure relief.

Disclosure of Invention

The invention aims to solve the technical problem of providing the spine-protecting and pressure-relieving bamboo elastic piece deck chair which can meet different requirements of people with different body types, so as to ensure that the spine of a human body is in a natural bending state and realize pressure relief.

The invention adopts the following technical scheme to solve the technical problems:

a spine-protecting pressure-relieving bamboo spring deck chair, comprising:

The support frame comprises a seat surface frame, a front foot frame and a backrest frame which is rotationally connected with the seat surface frame, wherein an angle adjusting device is arranged between the backrest frame and the seat surface frame and is used for adjusting and positioning the angle between the backrest frame and the seat surface frame;

The rib frame comprises a backrest rib frame, a seat surface rib frame and a front foot rib frame; the backrest row framework is connected with the backrest frame, the seat surface rib frame is connected with the seat surface frame, and the front foot row framework is connected with the front foot frame;

The armrests and the chair legs are respectively arranged at two sides of the seat frame;

The backrest row frameworks, the seat surface row frameworks and the front foot row frameworks are all composed of a plurality of unit row frameworks, and each unit row framework comprises a bamboo elastic sheet, a sleeve head for fixing the bamboo elastic sheet and a hardness adjusting device connected with the sleeve head; the hardness adjusting device is used for adjusting the hardness of the surface of the bamboo elastic sheet.

As one of the preferable modes of the invention, the armrests and the chair legs which are positioned on the same side are in a specific integrated structure; the upper part of the integral forming structure is bent and formed with the armrests, and the lower part of the integral forming structure is bent and formed with the chair legs.

As one of the preferable modes of the invention, the backrest frame is a U-shaped frame with a downward opening, and comprises two vertical racks and a transverse connecting frame connected with the tops of the two vertical racks; the two vertical racks are respectively connected with the two sides of the seat surface frame in a rotating way; the intersection of the vertical frame and the corresponding seat surface frame is provided with a round shaft hole, an intersection shaft is matched in the round shaft hole, and the vertical frame is rotationally connected with the corresponding seat surface frame through the intersection shaft.

As one of the preferable modes of the invention, the angle adjusting device is provided with two angle adjusting devices which are respectively positioned at the lower ends of the intersections of the backrest frames and the corresponding seat surface frames; each angle adjusting device comprises an arc-shaped clamping groove and a sliding connecting piece in sliding fit with the arc-shaped clamping groove; the arc-shaped clamping groove is fixed at the bottom of the seat frame and is integrally bent into an arc shape, and three upward arc-shaped bayonets are formed in the inner surface of the arc-shaped clamping groove; the sliding connecting piece is formed at the bottom of the vertical rack on the backrest frame, and specifically is a sliding connecting piece with one end connected with a sliding head; the sliding head performs arc-shaped sliding motion on the arc-shaped clamping groove, and limits the included angle between the backrest frame and the seat surface frame by sliding to each arc-shaped bayonet position.

As one of the preferable modes of the invention, the three arc bayonets on the arc-shaped clamping groove are respectively 104-degree arc bayonets, 135-degree arc bayonets and 165-degree arc bayonets; when the sliding head is clamped into the 104-degree arc bayonet, an included angle between the backrest frame and the seat surface frame is 104 degrees; when the sliding head is clamped into the 135-degree arc bayonet, the included angle between the backrest frame and the seat surface frame is 135 degrees; when the sliding head is clamped into the 165-degree arc-shaped bayonet, the included angle between the backrest frame and the seat surface frame is 165 degrees.

As one of the preferable modes of the invention, the inner periphery of the arc-shaped clamping groove is also provided with an arc-shaped limit strip; the middle part of sliding connection spare is equipped with an opening decurrent "U" mount pad, works as sliding connection spare passes through the spacing of arc, "U" mount pad cover is established on the spacing of arc to connect again in the bottom of "U" mount pad the sliding head, so that the sliding head is smooth motion on the arc draw-in groove.

As one of the preferred modes of the invention, the bamboo shrapnel on each unit row skeleton is specifically a double-row bamboo shrapnel with a two-layer or three-layer structure, and two ends of the double-row bamboo shrapnel with the two-layer or three-layer structure are matched with a pair of sleeve heads which are arranged in opposite directions; the inner side end of the sleeve head is respectively provided with two parallel hole grooves, the opening heights of the hole grooves correspond to the thickness of the three layers of bamboo spring plates, a pair of dovetail grooves are formed at the bottom ends of the inner walls of the two sides of the hole grooves respectively, and the dovetail grooves are matched with cushion blocks with dovetails which are additionally arranged.

As one of the preferable modes of the invention, the hardness adjusting device comprises a supporting base, a supporting rod, a sliding block and a fixed block; the support base is arranged below the bamboo elastic sheet, a fixed block and a sliding block are sleeved on the support base, the fixed block is fixedly connected with the support base, and the sliding block is slidably connected with the support base; the support rods are arranged in pairs, two by one, and are respectively arranged on two sides of the support base in parallel; one end of the supporting rod is fixed on the connecting body and is connected with the sleeve head above the connecting body through the connecting body, and the other end of the supporting rod extends towards the direction close to the middle of the supporting base and sequentially traverses the circular holes on the sliding block and the fixed block to be fixedly connected with the fixed block; the sliding block slides on the supporting rod and the supporting base between the connecting body and the fixed block;

in addition, the sliding block is also provided with a nut mounting hole and a tightening nut matched with the nut mounting hole, and the tightening nut is used as a tightening device when the sliding block slides left and right.

As one of the preferable modes of the invention, two ends of the supporting base are provided with rectangular tenons in an extending way, and the rectangular tenons are matched with rectangular mortise of the same size arranged on the corresponding supporting frame; the row frameworks are fixedly connected with the corresponding supporting frames through the matching of the rectangular tenons and the rectangular mortise.

As one of the preferable modes of the invention, the upper surface of the supporting base is also provided with a convex scale.

As one of the preferable modes of the invention, when a human body is lying on the reclining chair, the backrest row framework, the seat surface row framework and the forefoot row framework can be further divided into areas according to different contact positions; the backrest row framework is sequentially divided into a head contact area, a shoulder and back contact area and a waist contact area from top to bottom; the seat surface rib frame is divided into buttocks and thigh contact areas; the forefoot rib cage is divided into a shank contact area.

As one of the preferable modes of the invention, the elastic modulus and carbonization degree of the bamboo shrapnel of each unit row skeleton on the backrest row skeleton, the seat surface row skeleton and the front foot row skeleton can be respectively selected; the elastic modulus of the bamboo shrapnel is selected in four grades, and is respectively as follows: grade A is more than or equal to 12500Mpa, grade B is more than or equal to 11000Mpa and less than or equal to 12500Mpa, grade C is more than or equal to 9000Mpa and less than or equal to 11000Mpa, and grade D is more than or equal to 9000Mpa; the carbonization degree of the bamboo shrapnel has the following selection range: the carbonization degree is 8% -35%.

As one of the preferable modes of the invention, the elastic modulus of the bamboo shrapnel is related to the bamboo type, density, bamboo age, standing condition, microstructure of the bamboo and the like, and the bamboo shrapnels with different elastic modulus grades can be obtained according to screening.

As one of the preferable modes of the invention, the different carbonization degrees of the bamboo shrapnel are realized by a high-temperature steam method; after the bamboo is carbonized by steam, the internal sugar is oxidized at high temperature, and the carbon content in the molecular chain is increased.

Compared with the prior art, the invention has the advantages that:

(1) According to different requirements of different groups on supporting force of all parts of the deck chair, the invention combines the principle of ergonomics to carry out partition design on the hardness of the deck chair row skeleton; the deck chair is divided into five areas of a head, shoulders, a back, a waist, buttocks, thighs and shanks, the hardness of each area is designed and adjusted according to the supporting requirement, the spine is ensured to be in a natural bending state, meanwhile, the pressure distribution of a seat surface is optimized, and the requirements of people with different body types and weights are met;

(2) The angle adjusting device is arranged between the backrest frame and the seat surface frame, so that the three angles of 104 degrees, 135 degrees and 165 degrees of the backrest of the reclining chair can be simply and effectively adjusted from the perspective of ergonomics; the three angles are adjusted and set, so that the deck chair can meet the requirements of three use states of sitting, semi-sitting and lying of a user respectively, and simultaneously, more scientific and reasonable spine protection is realized; when the included angle between the trunk and the thigh is 135 degrees, the lumbar vertebra of the person is in a natural bending state most easily;

(3) The bottom end of the bamboo spring plate is provided with the 'hardness adjusting device', so that the hardness of the surface row skeleton of the deck chair can be adjusted; in the design of the hardness adjusting device, a scale is arranged on a single deck chair row framework supporting rod and is used as a scale for quantitatively adjusting the hardness of the row framework; the slider is adjusted towards two sides, the scale is larger, and the hardness of the row skeleton is also larger;

(4) Besides the soft and hard adjusting device, the invention can realize the adjustment of the soft and hard of the row skeleton by classifying the bamboo shrapnel and adjusting the elastic modulus, the carbonization degree and the layer number (two layers or three layers) of the bamboo shrapnel, wherein the smaller the elastic modulus, the higher the carbonization degree, the more the layer number and the higher the hardness;

(5) The invention utilizes the characteristics of high elasticity and good toughness of the bamboo spring to carry out pressure relief design; compared with the wood material, the pressure index, the maximum pressure and the average pressure of the bamboo shrapnel seat are respectively reduced by 8.57 percent, 8.83 percent and 6.25 percent, and the pressure relieving effect is obvious; in addition, the bamboo has high heat conducting performance, and is cool and comfortable in summer, so that the deck chair can be used in winter and summer;

In summary, the present invention achieves spinal protection and stress relief for lounge chairs from both material selection and structural design and optimization. Firstly, processing natural bamboo into bamboo chips, forming bamboo shrapnel with different elastic modulus and carbonization degree after processing, compared with natural bamboo, the bamboo shrapnel has higher toughness and better elasticity, and the classified bamboo shrapnel has different hardness and elasticity, and the quantitative adjustment of the hardness of the deck chair row skeleton can be realized by adopting the bamboo shrapnel with different elastic modulus, different carbonization degree and different layers at different positions and combining the structural design of a hardness adjusting device. On one hand, the reasonable support of each part can be realized, and the human spine health is protected; on the other hand, can satisfy the different support demands of different bodily forms people, when different people use, only need to carry out simple regulation can. Meanwhile, after the tight support of each part is realized, the contact area between the person and the chair is relatively large, the contact is more sufficient, and the high elasticity of the bamboo elastic sheet is combined, so that the pressure can be effectively relieved.

Drawings

FIG. 1 is a schematic view of the whole structure of a back rest of the spine-protecting and pressure-relieving bamboo dome reclining chair of embodiment 1 in a state of being inclined by 104 degrees;

FIG. 2 is a schematic view showing the overall structure of the back rest of the spine-protecting and pressure-relieving bamboo dome reclining chair of embodiment 1 in a state of being inclined by 135 degrees;

FIG. 3 is a schematic view showing the overall structure of the back of the spine-protecting and pressure-relieving bamboo dome reclining chair of example 1 in a state of being inclined by 165 degrees;

FIG. 4 is a schematic diagram showing the assembly of the frame and the row skeleton in embodiment 1;

FIG. 5 is a schematic view of the reclining chair with the row skeleton removed in example 1;

fig. 6 is a schematic view of the structure of the spareribs in example 1;

Fig. 7 is a schematic structural view of an angle adjusting device in embodiment 1;

FIG. 8 is a partial enlarged process diagram A of the reclining chair backrest angle of 135 to 104 adjustment structure of example 1;

FIG. 9 is a partial enlarged process diagram B of the reclining chair backrest angle 135 deg. to 104 deg. adjustment structure of example 1;

FIG. 10 is an enlarged partial process view C of the reclining chair backrest angle 135 to 104 adjustment mechanism of example 1;

FIG. 11 is a partially enlarged process view D of the reclining chair backrest angle 135 to 104 adjustment mechanism of example 1;

fig. 12 is a schematic structural view of a unit row skeleton (with three layers of bamboo shrapnel) in example 1;

FIG. 13 is a split view of the overall structure of the unit row skeleton (with three layers of bamboo shrapnel) in example 1;

Fig. 14 is an enlarged view of a partial structure of the unit row skeleton (with three layers of bamboo shrapnel) of example 1 when it is fitted to the head;

FIG. 15 is a split view of the overall structure of the unit row skeleton (with two layers of bamboo shrapnel) in example 1;

FIG. 16 is an enlarged view of the partial structure of the unit row skeleton (with two bamboo shrapnel) of example 1 when it is fitted to the head;

fig. 17 is a schematic diagram a of the procedure of adjusting the hardness of the unit rib cage structure by the hardness adjusting device in example 1;

fig. 18 is a schematic diagram B showing the process of adjusting the hardness of the unit rib cage structure by the hardness adjusting means in example 1.

In the figure: 1 is a supporting frame, 11 is a seat surface frame, 12 is a front foot frame, 13 is a backrest frame, 131 is a vertical rack, 132 is a transverse connection rack, 14 is an intersection shaft, 2 is a rib frame, 21 is a backrest row skeleton, 22 is a seat surface row skeleton, 23 is a front foot row skeleton, 3 is an armrest, 31 is a supporting plate, 4 is a chair leg, 5 is an angle adjusting device, 51 is an arc clamping groove, 511 is an arc bayonet, 5111 is a 104-degree arc bayonet, 5112 is a 135-degree arc bayonet, 5113 is a 165-degree arc bayonet, 52 is a sliding connection piece, 521 is a sliding head, 522 is a U-shaped mounting seat, 53 is an arc limiting strip, 6 is a unit row skeleton, 61 is a bamboo spring piece, 62 is a sleeve head, 621 is a hole groove, 622 is a dovetail groove, 623 is a cushion block with a dovetail, 63 is a soft hardness adjusting device, 631 is a supporting base, 6311 is a rectangular tenon, 632 is a supporting rod, 6331 is a nut mounting hole, 6332 is a tightening nut, and 635 is a fixed block.

Detailed Description

The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.

Example 1

1-18, The spine-protecting and pressure-relieving bamboo elastic piece deck chair of the embodiment has the dimensions of 1400mm long, 570mm wide and 860mm high. Referring to fig. 1 to 3, the reclining chair includes a support frame 1, a rib frame 2, armrests 3, and legs 4. The support frame 1, the armrests 3 and the chair legs 4 are all made of bamboo laminated materials, and a certain number of rectangular mortise holes are formed in the inner side of the support frame 1 to form a basic frame structure of the deck chair.

Referring to fig. 4 and 5, the support frame 1 includes a seat frame 11, a front foot frame 12, and a back frame 13 rotatably connected to the seat frame 11, and an angle adjusting device 5 is disposed between the back frame 13 and the seat frame 11; the angle adjusting device 5 is used for adjusting and positioning the angle between the backrest frame 13 and the seat surface frame 11.

Referring to fig. 4, 5 and 6, the rib cage 2 includes a backrest rib cage 21, a seat surface rib cage 22 and a front foot rib cage 23; wherein the backrest frame 21 is connected with the backrest frame 13, the seat surface frame 22 is connected with the seat surface frame 11, and the front foot frame 23 is connected with the front foot frame 12.

Referring to fig. 4, 5 and 6, the armrests 3 and the legs 4 are fixed to both sides of the seat frame 11 by fixing nuts, and the armrests 3 and the legs 4 are integrally formed; the upper part of the integral forming structure is bent to form the armrests 3, and the lower part of the integral forming structure is bent to form the chair legs 4; a supporting plate 31 is also connected between the two armrests 3, and the supporting plate 31 is abutted with the intersection of the supporting seat surface skeleton 22 and the front foot skeleton 23; in addition, the armrests 3 are 210mm from the seat surface, the width of the armrests 3 is 90mm, and the included angle between the armrests and the horizontal plane is 10 degrees to 15 degrees and is parallel to the rib frame 22 of the seat surface. The chair leg 4 has a height of 350mm, i.e. the height of the seat surface from the ground. The size setting can meet the size use requirements of people with different heights and different body types according to the design principle of large scale in human engineering.

Referring to fig. 6, 12 and 15, the backrest frame 21, the seat frame 22 and the front frame 23 are each composed of a plurality of unit frames 6, each unit frame 6 has a length of 590mm and a width of 80mm, the arrangement space between each unit frame 6 on the supporting frame 1 is 30mm, and the space between the frames at the intersection of the seat and the backrest is 60mm, so as to provide a bending space for the seat and the backrest. Each unit row skeleton 6 respectively comprises a bamboo elastic sheet 61, a sleeve head 62 for fixing the bamboo elastic sheet 61 and a hardness adjusting device 63 connected with the sleeve head 62, wherein the hardness adjusting device 63 is used for adjusting the hardness of the surface of the bamboo elastic sheet 61.

Further, referring to fig. 5, in this embodiment, the backrest frame 13 is a U-shaped frame with a downward opening, and includes two vertical frames 131 and a transverse connection frame 132 connecting the tops of the two vertical frames 131; two vertical racks 131 are rotatably connected to both sides of the seat frame 11, respectively. The intersection of the vertical frame 131 and the corresponding seat frame 11 is formed with a circular shaft hole, an intersection shaft 14 is matched in the circular shaft hole, and the vertical frame 131 and the corresponding seat frame 11 are rotationally connected through the intersection shaft 14.

Further, referring to fig. 7, in the present embodiment, two angle adjusting devices 5 are provided, and are respectively located at the lower ends of the intersections of the backrest frames 13 and the corresponding seat frames 11; each angle adjusting device 5 comprises an arc-shaped clamping groove 51 and a sliding connecting piece 52 which is in sliding fit with the arc-shaped clamping groove 51. The arc-shaped clamping groove 51 is fixed at the bottom of the seat surface frame 11 and is integrally bent into an arc shape, and three upward arc-shaped bayonets 511 are formed in the inner surface of the arc-shaped clamping groove 51; the sliding connection 52 is formed at the bottom of the vertical shelf 131 on the back frame 13, and specifically, the sliding connection 52 having a sliding head 521 connected to one end thereof. The sliding connecting piece 52 takes the intersection point shaft 14 as a turning point, and drives the sliding head 521 to do sliding movement with a movement track in an arc shape on the arc-shaped clamping groove 51 so as to adjust the inclination angle of the backrest of the deck chair; meanwhile, when the sliding head 521 slides to the position of each arc bayonet 511, the inclination angle of the backrest of the reclining chair can be limited. The vertical frame 131 is further formed with a hollow space hole at a position intersecting with the seat frame 11, and the hollow space hole provides a space for the sliding connector 52 to move up and down for sliding in the arc-shaped clamping groove 51.

Further, the arc-shaped clamping groove 51 is made of metal, the thickness of the arc-shaped clamping groove 51 is 20mm, and three arc-shaped bayonets 511 on the arc-shaped clamping groove 51 are 104-degree arc-shaped bayonets 5111, 135-degree arc-shaped bayonets 5112 and 165-degree arc-shaped bayonets 5113 respectively; when the sliding head 521 is clamped into the 104 ° arc-shaped bayonet 5111, the included angle between the backrest frame 13 and the seat frame 11 is 104 °; when the sliding head 521 is clamped into the 135-degree arc-shaped bayonet 5112, the included angle between the backrest frame 13 and the seat frame 11 is 135 degrees; when the sliding head 521 is clamped into the 165 deg. arc-shaped bayonet 5113, the angle between the back frame 13 and the seat frame 11 is 165 deg.. Referring to fig. 8 to 11, a partially enlarged process diagram of the reclining chair of the present embodiment is shown with its backrest angle of inclination adjusted 135 ° to 104 °.

Further, referring to fig. 7 and 8, in the present embodiment, an arc-shaped limiting strip 53 is further formed on the inner periphery of the arc-shaped slot 51; the middle part of the sliding connection piece 52 is provided with a U-shaped installation seat 522 with a downward opening, when the sliding connection piece 52 passes through the arc-shaped limiting strip 53, the U-shaped installation seat 522 is sleeved on the arc-shaped limiting strip 53, and the bottom end of the U-shaped installation seat 522 is connected with the sliding head 521 again, so that the sliding head 521 stably moves on the arc-shaped clamping groove 51.

Further, referring to fig. 12, 13, 14, 15 and 16, in this embodiment, the bamboo spring pieces 61 on each unit row skeleton 6 are two-layer or three-layer double-row bamboo spring pieces 61, the spacing between the double-row bamboo spring pieces 61 is 20mm, the length of the single-row bamboo spring piece 61 is 550mm, the width is 30mm, and the thickness is 5mm; the two ends of the double-row bamboo spring 61 with two or three layers are matched with a pair of opposite sleeve heads 62, the sleeve heads 62 are made of metal materials with higher strength, the size is 90mm x 18mm x 50mm, two parallel holes 621 with the size of 30mm x 15mm x 30mm are respectively formed in the inner side ends of the sleeve heads 62, the opening height of the holes 621 just corresponds to the thickness of the three-layer bamboo spring 61, a pair of dovetail grooves 622 are formed in the bottom ends of the inner walls of the two sides of the holes 621, the dovetail grooves 622 are matched with cushion blocks 623 with dovetails, and the size of each cushion block is 30mm x 30mm. When only two layers of double-row bamboo shrapnel 61 are needed, the cushion block 623 with the dovetails is arranged at the bottommost part of the hole groove 621, and simultaneously the needed two layers of double-row bamboo shrapnels 61 are arranged on the cushion block 623 with the dovetails; when the double-row bamboo spring 61 with the three-layer structure is needed, the cushion block 623 with the dovetail is not needed, and the double-row bamboo spring 61 with the three-layer structure is directly placed into the corresponding hole slot 621 of the sleeve head 62.

Further, referring to fig. 12, in the present embodiment, the hardness adjusting device 63 includes a support base 631, a support rod 632, a slider 633 and a fixing block 634. The support base 631 is arranged below the bamboo spring 61, adopts recombined bamboo, is 50mm 18mm 570mm body blocks, and the upper surface of the support base 631 is provided with a convex scale 6311 serving as a scale for quantitatively adjusting the hardness of the row skeleton 2. Two fixed blocks 634 and two sliding blocks 633 are sleeved on the support base 631, and the sliding blocks 633 and the fixed blocks 634 are made of metal materials with higher strength; wherein, two fixed blocks 634 are fixedly connected with the support base 631, two sliding blocks 633 are slidably connected with the support base 631, and the two sliding blocks 633 are respectively arranged at the outer sides of the two fixed blocks 634. The support rods 632 are elastic metal round rods with the diameter of 6mm, and are arranged in four groups, two groups and two groups, and are respectively arranged at two sides of the support base 631 in parallel; one end of the supporting rod 632 is fixed on the connecting body 635 and is connected with the sleeve head 62 above the connecting body 635, and the other end of the supporting rod 632 extends towards the direction close to the middle of the supporting base 631 and sequentially traverses the sliding block 633 and the circular cavity on the fixed block 634 and is fixedly connected with the fixed block 634; wherein, the sliding block 633 slides on the supporting rod 632 and the supporting base 631 between the connecting body 635 and the fixed block 634 to change the functional size of the supporting rod 632, thereby adjusting the hardness of the deck chair row skeleton 2. Further, the slider 633 is provided with a nut mounting hole 6331 and a tension nut 6332 fitted to the nut mounting hole 6331, and the tension nut 6332 is used as a tension device when the slider 633 is slid left and right.

Further, referring to fig. 12, in the present embodiment, rectangular tenons 6312 are extended at two ends of the supporting base 631, and the rectangular tenons 6312 are matched with rectangular mortise holes of the same size formed on the corresponding supporting frame 1; the row skeleton 2 is fixedly connected with the corresponding support frame 1 through the matching of rectangular tenons 6312 and rectangular mortise joints.

In addition, in this embodiment, it should be further noted that, when a person lies on the reclining chair, the backrest frame 21, the seat frame 22 and the front frame 23 can further divide the regions according to the contact positions, and the unit frame 6 in each region, although similar in structure, can be scientifically and reasonably selected and matched according to the elastic modulus and carbonization degree of the bamboo elastic sheet 61 in different positions and the differences of the layers (two or three layers), so that the requirements of supporting the different positions of different people can be adaptively met, the regional adjustment of the reclining chair frame 2 can be realized, the spine of the person is ensured to be in a natural bending state, and meanwhile, the pressure relief is realized. The specific explanation about the elastic modulus and carbonization degree classification technique of the bamboo dome 61 is as follows:

(1) A great deal of research shows that the factors influencing the physical and mechanical properties of the bamboo materials are many, including the types, the densities, the ages, the standing conditions, the microstructure and the like of the bamboo materials. The same kind of bamboo wood has obvious differences in physical and mechanical properties of different plants and different parts. The elastic modulus can be regarded as an index for measuring the degree of difficulty in generating elastic deformation of the material, and the larger the value is, the larger the stress for generating certain elastic deformation of the material is, namely the larger the rigidity of the material is, namely the smaller the elastic deformation is under the action of certain stress. The larger the elastic modulus value, the larger the stress of the material, the stronger the rigidity, and the less easy the deformation. A smaller value of the modulus of elasticity indicates that the material is less stressed, less stiff and more prone to deformation.

The invention can adopt a dynamic method to carry out nondestructive testing on the bamboo shrapnel 61 with different chemical properties, and the bamboo shrapnel 61 is divided into four different elastic modulus grades according to the numerical value obtained by the detection, for example, the grade A is more than or equal to 12500Mpa, the grade B is more than or equal to 11000Mpa, the grade B is more than or equal to 12500Mpa, the grade C is more than or equal to 9000Mpa, and the grade D is more than or equal to 9000Mpa. The greater the value of the modulus of elasticity, the better the elasticity of the bamboo strip 61, and the softer the surface of the rib cage 2. The user can select the bamboo spring piece 61 in the proper elastic modulus range according to the characteristics of the user, and can select the bamboo spring piece according to different requirements of different sections of the deck chair.

(2) Bamboo is a material which is easy to corrode, and a large amount of sugar is contained in the bamboo. Under proper conditions, various fungi are rapidly propagated, and bamboo is easy to corrode. The method for preventing the bamboo from corrosion adopts a chemical treatment method similar to the wood, and the method adopts carbonization of high-temperature steam. The carbonization of high-temperature steam has a certain anti-corrosion effect on bamboo, and has the main advantages of simplicity, practicability, high efficiency and no pollution.

Research shows that after the bamboo is carbonized by steam, the internal sugar is oxidized at high temperature, and the carbon content in the molecular chain is increased. There will be some increase in density, about a 10% increase. In addition, the flexural modulus and the strength of the bamboo material after steam carbonization are improved to a certain extent compared with those of the bamboo material without carbonization. Therefore, the mechanical property of the bamboo material can be enhanced by carbonization, and a large number of data researches show that the flexural modulus of the bamboo material after steam carbonization is improved by 8.4%, the strength is improved by 10%, and the design and the use of the structural material are facilitated. The bamboo spring piece 61 can improve the mechanical property of the bamboo spring piece by a carbonization method, the carbonization degree is 8-35%, and the stress requirements of different parts of the deck chair can be met.

The specific zoning of the inventive lounge chair is further described below:

the backrest row skeleton 21 consists of 8 unit row skeletons 6, the length of the backrest row skeleton is 780mm, and the backrest row skeleton 21 is sequentially divided into a head contact area, a shoulder and back contact area and a waist contact area from top to bottom; the hardness is adjusted by the unit row skeleton 6. The person lies on the deck chair, and the three parts all need reasonable support to realize the maintenance of the health of the spine. For example, a person lying on the reclining chair needs a larger supporting force on the back, i.e. the choice of the elastic B-class bamboo spring piece 61 with higher carbonization degree is recommended; the waist and the head are in a suspended state due to the supporting force of the backrest of the deck chair, which is unfavorable for the health of lumbar vertebra and cervical vertebra, so the bamboo spring piece 61 with lower elasticity than the C level of the back and lower carbonization degree is recommended.

The seat surface skeleton 22 consists of 5 unit skeleton 6 with sitting depth of 560mm, and the seat surface skeleton 22 is divided into buttocks and thigh contact areas; for a user with a general body type, the seat surface hardness adjustment of the part has good supporting effect and even stress on buttocks and thighs, and the bamboo shrapnel 61 with different elastic modulus, carbonization degree and layers (two layers or three layers) can be selected according to the weight and body type characteristics of the user and by combining the modes of the hardness adjustment of the rib frame 2, so that the multi-dimensional self-adaptive adjustment is realized. Wherein, the carbonization degree and the layer number are proportional to the hardness, and the elastic modulus is inversely proportional to the hardness. Generally, the seat rib frame 22 is required to have good supporting effect and also has a requirement for seat elasticity, and for this purpose, it is recommended to select the bamboo spring 61 with a higher degree of carbonization, having an elastic modulus value of class B or class C, as required.

The front foot row skeleton 23 is composed of 4 unit row skeletons 6, the length of the front foot row skeleton 23 is 420mm, and the front foot row skeleton 23 is divided into a lower leg contact area. The forefoot row skeleton 23 mainly provides support for the user's lower leg. The required supporting force is smaller, and a bamboo spring piece 61 with moderate C-level elastic modulus and lower carbonization degree is suggested.

The bamboo spring pieces 61 in the above partition designs are selected according to the general body type and weight of the user, and can be selected and adjusted according to the needs of the user with special body type.

The design principle of the device of the embodiment is as follows:

(1) Principle of hardness adjustment by adjusting the number of layers (two layers or three layers) of the bamboo shrapnel 61:

Referring to fig. 12 to 16, the bamboo spring 61 may be selected from two or three layers, so as to change the hardness of the row skeleton 2. When two layers of bamboo spring pieces 61 are selected, a cushion block 623 with a dovetail tenon made of the same material should be inserted into the sleeve head 62 for fixing the positions of the two layers of bamboo spring pieces 61, so as to prevent the bamboo spring pieces 61 from sliding off in the use process, and the adjusting effect and the use safety of the row skeleton 2 are affected.

(2) Principle of hardness adjustment by adjusting elastic modulus and carbonization degree of the bamboo shrapnel 61:

The smaller the elastic modulus of the bamboo dome 61 is, the greater the hardness is; the higher the carbonization degree of the bamboo spring piece 61 is, the higher the hardness is; the hardness and softness adjustment is realized on the material by the independent selection of the elastic modulus and carbonization degree of the bamboo shrapnel 61.

(3) Principle of hardness adjustment by the hardness adjusting device 63:

The sliding block 633 slides on the supporting rod 632 and the supporting base 631, and the functional size of the supporting rod 632 is changed and the hardness of the row skeleton 2 is changed by the sliding of the sliding block 633 on the supporting rod 632; the supporting base 631 is provided with a raised scale 6311 for fixing and controlling the position of the sliding block 633, so as to realize quantitative adjustment of the hardness of the deck chair row skeleton.

Referring to fig. 17 to 18, when the slider 633 slides to both ends of the unit row skeleton 6, the functional size of the support bar 632 is zero, and at this time, a vertical downward force is applied to the bamboo strip 61, and mechanical adjustment of the hardness in the unit row skeleton 6 is not effective; when the elastic nut 6332 on the slider 633 is loosened, the slider 633 is pushed to gradually move toward the center of the unit row skeleton 6, the closer the slider 633 is to the center, the larger the bending radian of the support rod 632 after being pressed is, the longer the functional size of the support rod 632 is, and the softer the rib frame 2 is; when the sliding block 633 slides to a required position, the elastic nut 6332 is screwed, the sliding block 633 is clamped into the raised scale 6311 arranged on the supporting base 631, and the position of the sliding block 633 is fixed, so that the stable and quantitative adjustment of the hardness of the row skeleton 2 is realized, and the adjustment requirement is met.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. A spine-protecting pressure-relieving bamboo spring deck chair, comprising:

The backrest row frameworks, the seat surface row frameworks and the front foot row frameworks are all composed of a plurality of unit row frameworks, and each unit row framework comprises a bamboo elastic sheet, a sleeve head for fixing the bamboo elastic sheet and a hardness adjusting device connected with the sleeve head; the hardness adjusting device is used for adjusting the hardness of the surface of the bamboo elastic sheet;

The backrest frame is a U-shaped frame with a downward opening, and comprises two vertical racks and a transverse connecting frame connected with the tops of the two vertical racks; the two vertical racks are respectively connected with the two sides of the seat surface frame in a rotating way; the intersection of the vertical frame and the corresponding seat surface frame is formed with a round shaft hole, an intersection shaft is matched in the round shaft hole, and the vertical frame and the corresponding seat surface frame are rotationally connected through the intersection shaft;

The elastic modulus and carbonization degree of the bamboo shrapnel of each unit row of frameworks on the backrest row framework, the seat surface row framework and the front foot row framework can be respectively selected; the elastic modulus of the bamboo shrapnel is selected in four grades, and is respectively as follows: grade A is more than or equal to 12500Mpa, grade B is more than or equal to 11000Mpa and less than or equal to 12500Mpa, grade C is more than or equal to 9000Mpa and less than or equal to 11000Mpa, and grade D is more than or equal to 9000Mpa; the carbonization degree of the bamboo shrapnel has the following selection range: the carbonization degree is 8% -35%.

2. The spine protection and pressure relief bamboo spring deck chair according to claim 1, wherein two angle adjusting devices are arranged at the lower ends of the intersections of the backrest frames and the corresponding seat frames; each angle adjusting device comprises an arc-shaped clamping groove and a sliding connecting piece in sliding fit with the arc-shaped clamping groove; the arc-shaped clamping groove is fixed at the bottom of the seat frame and is integrally bent into an arc shape, and three upward arc-shaped bayonets are formed in the inner surface of the arc-shaped clamping groove; the sliding connecting piece is formed at the bottom of the vertical rack on the backrest frame, and specifically is a sliding connecting piece with one end connected with a sliding head; the sliding head performs arc-shaped sliding motion on the arc-shaped clamping groove, and limits the included angle between the backrest frame and the seat surface frame by sliding to each arc-shaped bayonet position.

3. The spine protection and pressure relief bamboo spring deck chair according to claim 2, wherein the three arc bayonets on the arc-shaped clamping groove are respectively 104-degree arc bayonets, 135-degree arc bayonets and 165-degree arc bayonets; when the sliding head is clamped into the 104-degree arc bayonet, an included angle between the backrest frame and the seat surface frame is 104 degrees; when the sliding head is clamped into the 135-degree arc bayonet, the included angle between the backrest frame and the seat surface frame is 135 degrees; when the sliding head is clamped into the 165-degree arc-shaped bayonet, the included angle between the backrest frame and the seat surface frame is 165 degrees.

4. The spine protection and pressure relief bamboo spring deck chair according to claim 2, wherein the inner periphery of the arc-shaped clamping groove is also provided with an arc-shaped limit strip; the middle part of sliding connection spare is equipped with an opening decurrent "U" mount pad, works as sliding connection spare passes through the spacing of arc, "U" mount pad cover is established on the spacing of arc to connect again in the bottom of "U" mount pad the sliding head, so that the sliding head is smooth motion on the arc draw-in groove.

5. The spine protection and pressure relief bamboo shrapnel deck chair according to claim 1, wherein the bamboo shrapnel on each unit row framework is specifically a double-row bamboo shrapnel with a two-layer or three-layer structure, and two ends of the double-row bamboo shrapnel with the two-layer or three-layer structure are matched with a pair of sleeves which are arranged in opposite directions; the inner side end of the sleeve head is respectively provided with two parallel hole grooves, the opening heights of the hole grooves correspond to the thickness of the three layers of bamboo spring plates, a pair of dovetail grooves are formed at the bottom ends of the inner walls of the two sides of the hole grooves respectively, and the dovetail grooves are matched with cushion blocks with dovetails which are additionally arranged.

6. The spine protection and pressure relief bamboo dome reclining chair according to claim 1 or 5, wherein the softness and hardness adjusting device comprises a support base, a support rod, a slide block and a fixing block; the support base is arranged below the bamboo elastic sheet, a fixed block and a sliding block are sleeved on the support base, the fixed block is fixedly connected with the support base, and the sliding block is slidably connected with the support base; the support rods are arranged in pairs, two by one, and are respectively arranged on two sides of the support base in parallel; one end of the supporting rod is fixed on the connecting body and is connected with the sleeve head above the connecting body through the connecting body, and the other end of the supporting rod extends towards the direction close to the middle of the supporting base and sequentially traverses the circular holes on the sliding block and the fixed block to be fixedly connected with the fixed block; the sliding block slides on the supporting rod and the supporting base between the connecting body and the fixed block;

7. The spine protection and pressure relief bamboo spring deck chair according to claim 6, wherein rectangular tenons are arranged at two ends of the support base in an extending mode and are matched with rectangular mortise joints with the same size formed on the corresponding support frame; the row frameworks are fixedly connected with the corresponding supporting frames through the matching of the rectangular tenons and the rectangular mortise.

8. The spine protection and pressure relief bamboo dome reclining chair of claim 6, wherein the upper surface of the support base is further provided with raised scales.