CN210727301U

CN210727301U - Cushion for protecting caudal vertebra, correcting sitting posture, quickly eliminating fatigue and promoting health

Info

Publication number: CN210727301U
Application number: CN201920466914.5U
Authority: CN
Inventors: 苏文举
Original assignee: Ye Xin Environmental Technology Shanghai Co ltd
Current assignee: Ye Xin Environmental Technology Shanghai Co ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-06-12
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses a cushion for protecting caudal vertebra, correcting sitting posture, rapidly eliminating fatigue and promoting health, which comprises a cushion body, wherein the cushion body consists of four parts, namely a cushion inner core blank, a cushion outer sleeve, a cushion intermediate layer and a cushion inner layer; former embryo of cushion inner core and cushion triangle integrated into one piece, and the former embryo of cushion inner core and cushion antiskid dune integrated into one piece, form cushion buttock curved surface between cushion antiskid dune and the cushion triangle simultaneously, the former embryo outside parcel of cushion inner core has the cushion nexine, and the outside parcel of cushion nexine has the cushion intermediate level, and cushion overcoat parcel is in the outside in the cushion intermediate level simultaneously. This protection caudal vertebra corrects the cushion that the position of sitting eliminates fatigue fast and promotes health, reduces human lever effect, and balanced dispersion buttock pressure reduces caudal vertebra pressure, makes the waist back straighten, improves backbone pressure, can stabilize the health, corrects the position of sitting, the characteristics such as harm reduction as far as possible of sitting for a long time.

Description

Cushion for protecting caudal vertebra, correcting sitting posture, quickly eliminating fatigue and promoting health

Technical Field

The utility model relates to a cushion science and technology technical field specifically is a cushion that the position of sitting is corrected fast to tired promotion health is corrected to protection caudal vertebra.

Background

The cushion is a common familiar object in life, has a history for thousands of years, and is seen everywhere from the 'mat' of ancient people in Tang and Han, to various strange cushions in office and home today; the understanding of people on seat cushions still remains two basic points for thousands of years:

firstly, the method comprises the following steps: the cushion is considered to have the function of isolation, for example, the seat cushion is placed on a stool which is dirty, the seat cushion is placed on a stool which is cool, the seat cushion is placed on a stool which is hard, the cushion is placed on the hip, and the like;

secondly, the method comprises the following steps: the more soft the cushion, the better, because the soft things feel comfortable, the things stuffed in the cushion are from cotton, leaves, chaff, fiber and sponge which are the most common nowadays, and the two points are not wrong, the basic characteristics of the common cushion are isolation and softness, and the common cushion is enough for people to use intermittently in a short time, such as walking and sitting together for a while; in reality, due to the needs of work and life, there are many people who have to sit for a long time every day, such as office clerks, students, garment factory workers, electronics factory workers, company guards, programmers, patients, telemarketers, computer art workers, engineers, technicians, long distance drivers, etc., who need to sit for six to ten or more hours every day, which are typical sedentary families; for sedentary people, the traditional common cushion is far from meeting the use requirement, but because the thinking of people still stays on the isolated and soft layer of the traditional common cushion, the people do not recognize that the daily sedentary state leads to the deterioration of physical health, and do not recognize what kind of cushion is needed to relieve the deterioration. If the people cannot avoid sedentariness, the people need to sit healthily as much as possible, and not only the common cushion is needed, but also a professional cushion suitable for sedentariness is needed for health because of low price.

The system is used for explaining the importance and the necessity of the utility model and the professional cushion suitable for sedentary sitting by explaining the sedentary harm and how to relieve the current situation of the seat and the cushion, the influence of the hardness of the seat on the human body, the importance of protecting the caudal vertebra and the current situation and the defects of the common cushion.

Sedentary hazards and how to alleviate:

all people have the 'sitting' behavior, which is the instinct of people, and people sit for eating, sitting for rest, sitting for work and sitting for entertainment.

1. The longer the sitting time is, the better? But of course not. The sitting time is within six hours every day, and the sitting time is longer than six hours; the senior and middle school students in primary school are typical sedentary, sitting in classroom for at least four hours, and leaving school writing for at least four hours, the sedentary time is more than eight hours per day.

2. What is a harmful part of the body during sedentary sitting? Many modern medical reports indicate that long-term sitting can cause serious health risks, and many health problems are caused by long-term sitting, namely that the long-term sitting directly affects the spine, pelvis, ischia and coccygeal vertebra to cause flat buttocks, hunch and humpback and soreness and backache.

3. Which diseases are associated with sedentary heel? Lumbar disc herniation, lumbar muscle strain, obesity, kyphosis, soreness of the waist and backache, osteoporosis, diabetes, cervical spondylosis, hypercholesterolemia, muscular atrophy, heart disease, and the like; for example, prolonged sedentary periods can result in a decrease in glucose supply to insulin, resulting in an increased risk of developing diabetes; the tolerance of fat molecules, bad cholesterol and insulin can be improved after long-term sitting, so that the fat is not absorbed by the muscle, the blood sugar concentration is increased, and the obesity risk is greatly increased; the long-term sitting can also cause muscle atrophy, poor constitution and difficult slight movement; the long-term sitting also can cause osteoporosis, high cholesterol and weight increase, and the probability of cancer and heart disease is greatly increased.

4. What can not be avoided by sedentary sitting? The two methods are adopted, firstly, the sitting quality is improved, a professional cushion is adopted, the professional design is adopted, the human sitting posture mechanical distribution is met, the long-time sitting harm is reduced as much as possible, and the sitting is healthy; secondly, a good and correct sitting posture is formed, the lever effect of the human body is reduced, the pressure of the vertebral column is reduced, and the damage of sedentary sitting is reduced.

5. What pain will be in an out-of-position sitting? Damaged coccyx, pain of buttocks, soreness of waist, backache, cervical vertebra pain, headache, dizziness, nausea, pain and numbness of shoulder and back, tinnitus, blurred vision, etc.; for example, when sitting for a long time, the stressed parts are ischias and coccygeal vertebrae which are directly extruded by the self weight of the body, the buttocks are easy to pain, and the coccyx is easy to deform and damage; when the upper body of a user is straight, the user sits up on a stool without a backrest, the pressure borne by the lumbar vertebra is about 150 kilograms, and if the user leans forwards for 20 degrees and the like, the lever effect is serious, the load of the lumbar vertebra reaches 200 kilograms, the lumbar vertebra is deformed for a long time, and the muscle of the waist is stretched and pulled for a long time, so that the muscle of the waist is fatigued and the waist is sore and back-ache; and the cervical vertebra lever effect is caused by long-term bowing, the cervical nerve is pressed to cause headache, shoulder and back pain and numbness, the cervical vertebra joint is seriously changed to press vertebral artery, and the brain stem blood supply deficiency causes dizziness, nausea, tinnitus, blurred vision and the like; it can be seen how important the correct sitting posture is, and many physical diseases are caused by people sitting on the chair, but the people cannot feel the disease in normal times and do not pay attention to the disease because the disease is caused by long-term overstrain.

6. What is the correct sitting position? Three straight and three flat corners are achieved: the waist and the back are straight, close to the chair back and vertical to the ground; the line connecting the center of gravity of the head and the lumbar vertebra is vertical to the ground; the lower legs and feet are naturally vertical to the ground. The thigh is naturally laid flat and parallel to the ground; the knees are substantially level with the thighs (the feet are padded up when the feet are too low); the two feet are naturally placed on the ground. The correct sitting posture is the cheapest and effective health preservation, and the people who have a disease need to spend a large price to preserve health are not like correcting and cultivating the correct sitting posture, preventing lumbago, starting from sitting, straightening chest and raising head and correcting, and constantly paying attention to correct the sitting posture.

7. Why is the correct sitting position tired? Because the people are already accustomed to poor sitting postures, the correction is an active restraint for bad habits, and the people are difficult to know easily. Keke has many self-disciplines. The seat cushion is used to easily correct sitting postures and is comfortable to sit.

8. Why is it important to correct sitting posture? The future can be found only in the healthy state, and the chance is more. The sitting is healthy, modesty and elegant, shapes the body, reduces diseases, cultivates the self-discipline, acts actively, promotes the efficiency and promotes the learning. For example, in the high-grade students and middle-school students in primary schools, the proportion of the number of people with bow-back and humpback is very high, which is quite related to the long-term bad sitting posture at ordinary times, and the period of the students is in the golden period of the body growth and is also the golden period of correcting the bad sitting posture and preventing the bow-back and humpback.

Second, the function of the seat and the cushion

1. Common seat and bench present situation

As shown in fig. 1, most chairs or stools are only a platform tool for sitting, are not scientific in design, neither adapt to the mechanical distribution of human sitting postures, nor can effectively protect the caudal vertebra; the following schematic diagram shows the common seat state in life, and most seats and stools omit the protection design for the caudal vertebra part of the human body, and the change of the inherent design can increase the manufacturing cost:

① when sitting on the stool, as shown in fig. 1 a, the buttocks and part of thighs support the weight of the upper body, the back, waist and caudal vertebra are all suspended, the lever effect is serious, the pressure of the spine is great, and the tension and the load of the waist muscles are heavy.

② when sitting on the chair, as shown in fig. 1 b, the buttocks and part of thighs support the weight of the upper body, the chair of fig. 2 is designed to support the back, so as to reduce part of the pressure of the spine, but the waist and the caudal vertebra are suspended, the lever effect is concentrated on the lumbar vertebra and the caudal vertebra, the pressure of the lumbar vertebra and the caudal vertebra is still high, the stretching and tightening burden of the waist muscles is heavy, and the hip pain is caused by long-time sitting.

③ when sitting on the chair, as shown in fig. 1 c, the buttocks and part of thighs support the weight of the upper body, the chair of fig. 3 has been designed to support the waist, which reduces the pressure on the lumbar spine, but the back and the caudal vertebra are partially suspended, the lever effect concentrates on the thoracic back and the caudal vertebra, the pressure on the thoracic back and the caudal vertebra increases, and the pain on the buttocks can be caused by long sitting.

④ the chair shown in d of fig. 1 has both back and waist support design, reduces pressure on the thoracic back and waist spine, but the coccyx part is still suspended, lever effect concentrates on coccyx, pressure on coccyx increases, and long-sitting buttocks can be painful and sit more and more tired.

The body type individual difference of people is very big, and the height fat and thin is various, and the best seat is private customization, and it is not applicable to most people to buy a more well designed seat price not very, and adopts the cushion can compensate the not enough of seat, and is both economical and convenient.

2. Why is a hard seat inappropriate?

Bone injury by hard seat, "cocoon" (ischiadic tuberous cyst) by long-time sitting buttocks, and even improper sitting posture; the reaction force of the hard chair directly acting on the human body is also strong, and the ischia and the coccyx are easy to be injured after long-time sitting.

3. Why is a soft seat unsuitable?

Simply say because the soft seat injures the waist: firstly, the soft seat supporting surface is easy to deform, the buttocks sink, the pressure distribution is unbalanced, the muscles are stiff and fall pain, and the people feel tired when sitting over; secondly, the soft seat supporting surface is unstable and undulates under slight pressure, which aggravates the lever effect of human body, increases the pressure of spine, makes people sit for a long time with soreness and backache, and easily causes the strain of lumbar and kyphosis lumbar muscles after sitting for a long time.

4. What stiffness of the seat is appropriate?

The hardness range of the human body in the relaxed, tense and tense states is considered to be optimal (Shore hardness, 10C-75C), the human body has elasticity and supporting strength, is soft but not soft, hard but not hard, and is comfortable when the user sits up, the chair cushion can make full use of human body sitting posture mechanics in the hardness range, the optimal performance is exerted, and rejection can be caused by the too soft and too hard supporting surfaces.

5. Why is a chair sitting on the back?

If the stool without the backrest is rightly seated, the upper body is straight, and the lumbar bears the pressure of about 150 kilograms; if the body leans forward by 20 degrees, the lever effect is serious, and the load of the lumbar vertebra can reach 200 kilograms; if the chair is sitting on a chair with a backrest, the buttocks are all in place, the waist and the back are completely leaned on the chair back, and the pressure of the spine is reduced by half and is only more than 50 kilograms.

Importance of protection of the caudal vertebra

1. Injury of the coccyx, premature senility; the coccyx is accompanied with the miracle ganglion, which can cause viscera dysfunction and overstrain diseases due to coccyx injury stimulation and reflexivity, and can also show dizziness, vexation, chest distress, waist soreness, chronic diarrhea, dry eyes, eye pouch protrusion, pale yellow face, drowsiness at noon, increase of frontal wrinkles and chloasma on the face; for a person who sits for a long time, the reaction force of the seat can easily cause deformation, strain, inflammation and pain of the coccyx; the damaged coccyx stimulates peripheral nerves to be very sensitive, and the pain is hard to endure when the coccyx is lightly touched, so that the pain even extends to the legs; the coccyx pain of office workers and students is generally caused by sedentariness;

2. most of seats and stools are not designed to protect the caudal vertebra, most of cushions are not designed to protect the caudal vertebra, and the deformation and damage of the physiological radian of the caudal vertebra are easily caused by long-time sitting; the supporting surface of the common seat is either too hard or too soft, the reaction force can be directly transmitted to the coccyx by the too hard supporting surface, and the too soft supporting surface is easily pressed and deformed to aggravate the lever effect of the human body, so that the coccyx can not be effectively protected, and the burden of the lumbar muscle can be aggravated.

3. Some persons with damaged coccyx can use a circle cushion shaped like a life buoy, and the hollow part avoids the coccyx part, so that the coccyx is not directly stimulated to feel painful when sitting down; although the cushion is effective temporarily, a series of other problems can be caused after long-term use, the circular cushion inner core is made of sponge or inflated, so that the shaking instability of the supporting surface can be caused, the lever effect of a human body can be aggravated, in order to balance the stability of the human body, the lumbar muscle is in a stretching and traction state for a long time to cause lumbar muscle strain, people with poor coccyx can easily adopt a forward-leaning sitting posture, the lumbar is subjected to huge pressure due to long-term bow of the spine, the lumbar is stood and humped, and cervical spondylosis, lumbar disc protrusion, hyperosteogeny and the like are further caused after long-term stoo; in addition, the risk of causing diabetes, obesity, cholesterol excess, muscle atrophy, osteoporosis, etc. is greatly increased; therefore, the coccyx is not well protected, and a series of adverse chain reactions are caused.

4. When the caudal vertebra part is subjected to the fitting protection of effective force, the waist and the back of a person can be naturally stretched and straightened, which is the physiological natural reaction of the human body; the bow and the humpback are reduced due to the straight waist and the straight back, the lumbar lever effect is greatly reduced, the pressure of the vertebral column is reduced, and the physical and psychological health is naturally facilitated, so that the good protection of the caudal vertebra is directly beneficial to the physical health; to protect the coccyx well, a seat, a stool and a cushion which are specially designed are needed, and considering the cost, the economy and the wide applicability, the selection of the special cushion is obviously more convenient, more economical and easier to realize.

The current situation and the defects of the common cushion;

in the discussion, all the cushions which use the sponge to fill the inner core are classified as common cushions, and the common cushions are essentially the cushion sponges filled in a cloth bag, so that the cushion has good softness, but the compression-resistant support strength is poor, is only 3-15 kg, is far lower than the body weight, and cannot support the kinetic energy of the body weight movement. The common cushion is almost a common cushion, and is suitable for common use of people intermittently in a short time, for example, the common cushion is enough for people to walk after sitting for a moment and sit up after sitting; for people who have to sit for a long time every day, such as students, office clerks, clothing factory workers, electronic factory workers, company guards, programmers, patients, telemarketers, computer art designers, engineers, technicians, long-distance drivers and the like, people who need to sit for six to ten hours every day have serious health risks, the traditional common cushion can not meet the use requirements of the traditional common cushion, and the traditional common cushion generally has a plurality of congenital defects which can not be compensated by the traditional common cushion and can only be additionally designed into a more scientific professional cushion.

The defects of the common cushion are mainly three in the summary, theoretical defects, material defects and modeling defects, and are elaborated one by one as follows:

1. the theoretical defects are as follows:

the cushion is always a method for filling soft crushed materials by using a cloth bag for hundreds of years, the filled materials are different from the previous leaves, hay, chaff, crushed cloth, cotton and the like to the current fibers and sponges, and the filled materials have the same essential characteristics and have the characteristics of softness, looseness, porosity, easy flowing, easy compression, easy deformation and the like, so the cushion is unstable in shape, poor in stability of a supporting surface and poor in supporting strength.

The common cushion has the advantages of isolation and softness, and does not need to have special functions, so that the common cushion does not develop a perfect and deep application theory. In fact, just because people who need special functions take the common cushion to meet the needs, the duck is caught up, the common cushion is made professional, and people are not conscious of the result and are long-lasting. As people generally think that the cushion needs to be soft and then soft, the cushion needs to be padded one after another, and in fact, under many conditions, the cushion plays an opposite role, so that the fatigue of a human body is more easily caused, the burden of the waist and the back is increased, the waist and the back are sore, and the buttocks are painful; even though the source of the problem is still unknown, the reason why the soft cushion is added and the back pain is soreness and aching is also the common cushion which has not been developed into a good application theory.

2. Material defects:

most of the inner core fillers of common seat cushions in the market at present are sponges, and the sponges are mainly used for explanation; although some cushions are made of rattan, bamboo strips, plant fibers and other materials, the cushion is also called as a cushion, but the cushion is actually a stool due to the material and action properties, and plays a role in heightening and isolating, so that the cushion can be summarized in the current situation of the seat explained in the foregoing.

Sponge, latex sponge, memory cotton and the like, which are all loose porous structural materials, usually utilize the compressibility of the porous structure to generate deformation to absorb the energy of mechanical vibration and impact, thereby achieving the purpose of buffering and damping. The sponge is poor in compressive support strength in the vertical direction, only 3-15 kilograms of the sponge are far lower than the body weight, the sponge can be easily flattened under stress, and the body weight cannot be stably supported. The sponge has poor stability in the horizontal direction, and the stress is easy to generate space displacement and shake, so that the lever effect of a human body is caused, and the kinetic energy generated by the motion action of a damping body cannot be stably buffered.

As shown in fig. 2, the porous structure can be deformed from different angles, so that the sponge product is difficult to stabilize in shape, and when a certain part is stressed, the whole or most of the area is easily displaced, fluctuated and shaken, new human body leverage can be continuously generated by the shaking, and the related muscle groups of the back, the waist and the hip are always in a stretching and tightening state to maintain the balance of the body, so that the body is fatigued, waist-sore and back-ache.

As shown in figure 3, the pore wall of poroid structure in use can produce more or less to break impaired, and the damaged is heavier the longer the live time is, and poroid structure collapses, can't compensate moreover, leads to pressure transmission unbalanced, and compressive resistance, resilience deteriorate produce permanent deformation, greatly reduced the effect of buffering damping, these all aggravate human leverage greatly, lead to body fatigue. This is why the new cushion is deformed after a certain period of time, has no resilience and loses its functional effect.

3. And (3) modeling defects:

the common cushion is lack of application theory support (lack of theory foundation), the inner core material is lack of firm support strength (lack of material foundation) inherently, it is determined that the common cushion can not have breakthrough progress in the field of function application, in fact the development of the common cushion is basically limited to the change of the material and the design of the outer cloth, even if the shape has slight fluctuation change, the appearance visual change is only increased, and the main body shape is still a large flat plate (which is a non-type).

Because the sponge can be easily compressed by small force, the sponge can be easily flattened by the weight of a human body even if a special shape exists, so that the shape can not play the designed function, and the shape is equal to or not; although some cushions are made of rattans, bamboo strips, plant fibers and other materials, the name of the cushion is also called as a cushion, the cushion is actually a stool due to the material and action properties, and the cushion plays a role in heightening and isolating, and does not need to be discussed deeply; the cushion has better effect than a large flat cushion, but is still a sponge cushion essentially because the sponge cushion is coated, and inherits all the defects of the sponge cushion.

To summarize: the utility model provides a cushion that needs is sat for a long time to adaptation of a section, will effectively protect the caudal vertebra, dispersion buttock pressure, reduce human lever effect, improve back of the body waist and backbone pressure, can stabilize the health, correct the position of sitting, harm reducing as far as possible to sit for a long time, the molding of current traditional cushion must be broken through to such cushion, and this needs have neotype, have excellent buffering damping performance, the material that has firm support intensity realizes, and such material must develop on the basis of the mechanics research of human position of sitting state again, design out the professional cushion that is suitable for sitting for a long time.

In order to solve the defects existing in the current market, the technology for improving the seat cushion is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem lie in overcoming prior art's cushion and have theoretical defect, material defect and molding defect, can't carry out the current situation of effective protection to the health of the sedentary, provide a cushion that the protection caudal vertebra is corrected the position of sitting and is eliminated fatigue fast and promote healthyly. The cushion inner core primitive embryo, cushion buttock curved surface and cushion antiskid dune have effective protection coccyx, dispersion buttock pressure, reduce human lever effect, improve chest back waist and backbone pressure, can stabilize the health, correct the position of sitting, harm characteristics such as reducing as far as possible of sitting for a long time.

In order to achieve the above object, the utility model provides a following technical scheme:

a cushion for protecting caudal vertebra, correcting sitting posture, rapidly eliminating fatigue and promoting health comprises a cushion body, wherein the cushion body consists of a cushion inner core blank, a cushion outer sleeve, a cushion middle layer and a cushion inner layer; former embryo of cushion inner core and cushion triangle integrated into one piece, and the former embryo of cushion inner core and cushion antiskid dune integrated into one piece, form cushion buttock curved surface between cushion antiskid dune and the cushion triangle simultaneously, the former embryo outside parcel of cushion inner core has the cushion nexine, and the outside parcel of cushion nexine has the cushion intermediate level, and cushion overcoat parcel is in the outside in the cushion intermediate level simultaneously.

Preferably, the cushion inner core blank is a wave-shaped-' device made of high molecular energy-absorbing environment-friendly materials, and the high molecular energy-absorbing environment-friendly material (also called as a point area deformation recovery material) is obtained by a tackifying resin modified styrene block copolymer through a special formula and process, meanwhile, the tensile elongation of the cushion inner core blank is 100-1500 percent (obtained by adjusting the formula according to actual needs), the energy absorption and vibration reduction effect is stronger, the cushion inner core blank has strong self-adhesion, the material has strong cohesive force, the integral shape of the product has excellent stability, the whole or most of displacement cannot be rocked even if the local stress is applied, so that the displacement space is greatly reduced, the lever effect is greatly reduced, the surface tension is enhanced, the surface resilience is good, the permanent deformation is not easy to generate, the body weight can be easily supported, and the service life is greatly prolonged.

Preferably, the vertical bearing strength of the cushion inner core blank is more than 200 kg, and the hardness range of the cushion inner core blank is 10-75 Shore hardness.

Preferably, the cushion inner core blank is made of thermoplastic material, the melting point of the cushion inner core blank is more than 200 ℃, the cushion inner core blank is processed in a mode including but not limited to injection molding, extrusion, plastic dripping, salivation, spraying, casting and the like, local point deformation is realized under the action of local point stress, the deformation returns to the initial state after external force is eliminated, and the product has excellent shape stability, so that the displacement space is greatly reduced, the lever effect is greatly reduced, the cushion inner core blank has excellent supporting strength, the actual vertical bearing strength even reaches more than 200 kilograms, and the cushion inner core blank is far higher than the weight of a human body.

Preferably, the sizes of the cushion outer sleeve, the cushion middle layer and the cushion inner layer are matched with the size of the cushion inner core blank, and the cushion middle layer, the cushion inner layer and the cushion inner core blank form a complete inner core.

Preferably, the cushion inner layer is a wave-shaped- ' device made of non-woven fabrics, the cushion middle layer is a wave-shaped- ' device made of pure cotton cloth, the cushion outer cover is a wave-shaped- ' device made of polyester cloth, the outermost layer is usually made of multilayer composite polyester cloth, the cloth is cut according to the outline size of the inner core, the inner core is arranged in the outer layer in a splicing and sewing mode, the outer cover is completely sewed and packaged to obtain a complete finished product, the outer cover sealing is generally provided with a zipper, the outer cover is convenient to disassemble and replace later, the outer cover of the multilayer composite polyester cloth is scratch-resistant, wear-resistant, dirty-resistant, easy to clean and attractive in color, and due to the fact that the outer cover is multilayer composite, good in air permeability, comfortable in hand feeling and comfortable in feeling of buttocks when a.

Preferably, the cushion consists of a triangular area, an anti-skid hump and a hip curved surface, and the surface of the cushion is in a wave shape. In order to facilitate subsequent coating, the middle layer is usually sewn by pure cotton cloth, the cloth is cut according to the outline size of an original blank for manufacturing the inner core, the inner core is spliced and sewn, the original blank for manufacturing the inner core coated by non-woven fabric is filled in the inner core, the complete inner core is obtained after complete sewing and packaging, the seal of the inner core is generally ironed and sealed by hot melt adhesive tape, therefore, the inner core is a whole and does not need to be disassembled in later use, the whole inner core is washed by hand if needing to be cleaned and is repeatedly used after being spread and dried, the service life of the inner core is very long, and the inner core can be used for more than five.

The cushion is economical and economical for customers at times, cost is saved, the inner core middle layer can be omitted, the inner core blank coated with the non-woven fabric is directly arranged in the coat, the coat zipper is omitted, the seal is ironed and sealed by the hot melt adhesive tape, the finished cushion product is a whole and does not need to be disassembled in later use, the whole cushion is washed by hands during cleaning, and the cushion is spread and dried for reuse. This saves costs, but the use function is not affected at all.

Compared with the prior art, the beneficial effects of the utility model are that:

the beneficial effects of the utility model are that mainly embody in three aspect:

the method provides a definite novel sedentary hazard reason mechanism and a definite solution:

1. the cause mechanism of the sedentary harm is clearly known:

(1) the back, the waist and the hip are directly contacted with the external object and are squeezed and rancour injured by the counterforce.

(2) The lever effect of the human body induces the release of the balance danger instinct of the human body, leads the muscle groups of the waist, the back and the hip to be in a tight state for a long time, and consumes a large amount of physical energy to cause body fatigue.

The first is well understood, for example, the pain of the buttocks in a hard seat, and prolonged rubbing of the buttocks against the hard seat, resulting in nodular cysts in the ischial bones, commonly known as "calluses". Long-term sitting on a hard seat can also cause the deformation and damage of the coccyx, inflammation and pain. The coccyx is accompanied with the miracle ganglion, and the coccyx can be stimulated by coccyx injury, and the visceral dysfunction caused by reflexivity can cause overstrain and disease, the coccyx injury and the premature senility of people. The coccyx pain of office workers and students is usually caused by sedentary. Avoid the generation of calluses in the sedentary period, and the use of the common cushion is only needed. The effect is not good just for protecting the coccyx, and ordinary cushion just is a flat board basically, just does not have the functional design of protection coccyx.

The second mechanism is the utility model discloses the design basis and the essence of product are also the utility model discloses the cushion is different from the key of other cushion products, the utility model discloses the follow-up design work of cushion all centers on this strip reason and goes on, for example, the design reduces human lever effect, utilizes the dangerous instinct of human body balance, makes muscle crowd relax, reduces physical fitness consumption, and so on. According to this mechanism, a wide variety of products can be developed. This mechanism involves a lot of knowledge, which has been explained in detail above and will not be described here.

The common symptoms of waist soreness and backache, lumbar muscle strain, hip fall pain and the like are different manifestations of body fatigue, the body fatigue cannot be relieved, the body fatigue is aggravated continuously, the diseases are really accumulated, and the risks of lumbar disc herniation, cervical spondylosis, hyperosteogeny and the like are greatly increased.

2. Method for reducing sedentary hazards

If the people can not sit for a long time, the people need to sit healthily as much as possible, and the solution is to reduce the lever effect by improving the supporting surface so as to reduce the displacement and shake, further reduce the occurrence of the human body balance danger instinct, further reduce the tightening state of muscle groups, and achieve the purpose of eliminating or relieving the body fatigue. The improved support surface can cut off or reduce the inducement of lever effect of human body, so that the fatigue can be synchronously eliminated or alleviated, no additional forcing action is needed to the body, the device is physical, safe, environment-friendly and harmless to the human body, and belongs to a pre-active prevention method, and the like belongs to a post-compensation method for massage.

The best tool for improving the supporting surface is the professional cushion, which is the simplest, most direct, effective and economical, and the inner core filling material of the cushion is the core of the professional cushion, so that all mechanical property requirements and buffering and vibration damping functions are integrated.

Secondly, the cushion inner core is made of high molecular energy-absorbing environment-friendly material

The use of sponges is abandoned, and the disadvantages of sponges are already explained above and are not described in detail here. To the defect of sponge, it is gone against it and going, the utility model discloses a polymer energy-absorbing environmental protection material (also called the regional deformation of point reply material) makes the interior core embryonic plant, this kind of material is obtained through special formulation and technology by tackifying resin modified styrene block copolymer, buffering energy-absorbing damping effect is stronger, strong autohension has, make the material have powerful cohesion, the whole shape of product has good stability, even local atress can not produce rocking of whole or most displacement yet, therefore reduce greatly and produce the displacement space, the lever effect that reduces greatly, surface tension strengthens, surface resilience is good, difficult permanent deformation produces, can easily hold in the palm burden health weight, and life has been improved greatly. The properties of this material are described in "example one: the selection of cushion materials capable of eliminating or relieving body fatigue is detailed in the section, and the detailed description is omitted here.

Thirdly, adopting a wave-shaped-' curved surface modeling structure,

1. a wave-shaped- 'shape surface modeling structure is explicitly proposed, as shown in figures 12-13, and key structural parameters and value ranges are shown in a table 1-' shape surface frame value range parameter table) below. The 'to' shape curved surface modeling structure is visually represented by a central section curve of the cushion, and consists of a triangular area, a hip arc curved surface and an anti-skid hump, and the curved surfaces of the three are naturally and smoothly transited. This is the utility model discloses the figurative core structure of cushion both is the cushion outward appearance, also is a mechanical structure, and the cushion other parts all change on this frame construction's basis and obtain.

2. The triangular area can prevent the body from bending backwards and can directly and closely protect the caudal vertebra. The utility model discloses the cushion attaches particular importance to the protection of coccyx, and most seat, seat and cushion do not have the design of direct protection coccyx. When the caudal vertebra part is protected next to the skin with effective force, the lumbar can be naturally stretched and straightened due to the natural physiological reaction of the human body, the bow and the humpback are reduced, the lumbar lever effect is greatly reduced, the pressure of the vertebral column is reduced, and the caudal vertebra is naturally beneficial to physical and mental health, so that the caudal vertebra is protected, and the direct benefit is provided for the physical health.

3. The anti-skidding dune not only stops the antedisplacement gliding of health, stabilizes the health effect, still lies in that the cooperation trigonum forms perfect buttock curved surface, like saddle to the effect of rider, reduces and balanced dispersion buttock pressure for buttock pressure can not excessively be concentrated locally. Meanwhile, the cushion has pertinence and professionality due to the height and size change in the design of the anti-skid dune. For example, for a seat cushion used by a student, a hump (Hc ═ 47.9028mm) needs to be intentionally raised, so that the student feels comfortable when sitting upright and sitting, the student does not feel tired when sitting for a long time, and the root of the thigh feels diaphragmatic when sitting badly and sitting badly if the student leans on the legs, the comfort is reduced, so that the student is forced to unknowingly feel the sitting upright and sitting, and the aims of correcting the sitting posture, shaping the body, relieving the pressure of the spine, relieving the fatigue of the body and eliminating the burden of soreness of the waist, back, pain and hip pain are achieved.

To summarize: the utility model discloses the cushion has fused the mechanical research of long-time sitting harm reason mechanism, human position of sitting state, has adopted the polymer energy-absorbing material of point area deformation reply characteristic and scientific and reasonable 'the-' curved surface molding structure, and the shortcoming is one can not, lacks any link, and the performance of product all can weaken greatly, also can become the product of expecting practical value.

Drawings

FIG. 1 is a schematic view of a conventional chair and stool;

FIG. 2 is a schematic diagram of a sponge deformed in use;

FIG. 3 is a schematic view showing the breakdown of the spongy cellular structure;

FIG. 4 is a diagram of a material object of an inner core blank of the cushion of the present invention;

FIG. 5 is a line drawing of a blank of the inner core of the cushion of the present invention;

FIG. 6 is a left view of the utility model of the inner core blank of the cushion

FIG. 7 is a left view bar of the inner core blank of the cushion of the present invention;

FIG. 8 is a left side view cross section of the cushion of the present invention;

FIG. 9 is a schematic view of the cushion with a wave-to-curved surface of the present invention before sitting;

FIG. 10 is a schematic view of the cushion with a wave-shaped- "curved surface of the present invention in a middle posture after sitting in;

FIG. 11 is a schematic view of the cushion with a wave-shaped- "curved surface of the present invention in a low-posture sitting state;

fig. 12 is a schematic view of a central section curve of the cushion of the present invention;

FIG. 13 is a schematic view of a central section wave- "curved surface frame of the cushion of the present invention;

FIG. 14 is a schematic view of the left side of the curve design of the framework of the student's seat cushion triangle of the structure of the present invention;

FIG. 15 is a schematic view of the structure of the present invention showing that the student cushion stretches the triangle curve to obtain the triangle entity;

fig. 16 is a schematic view of the structure of the utility model for stretching the triangle curve to obtain the triangle line;

fig. 17 is a schematic diagram of the distribution change of the triangular area in the Y-axis direction according to the present invention;

fig. 18 is a schematic diagram of the distribution change of the triangular area in the Y-axis direction according to the present invention;

FIG. 19 is a schematic view of the anti-skid dune base curve design left squint of the student cushion of the present invention;

FIG. 20 is a schematic top view of the curve design of the anti-skid dune base of the student seat cushion of the present invention;

FIG. 21 is a schematic view of the anti-skid cumulus basic block obtained by stretching the basic curve of the student seat cushion of the structure of the present invention;

fig. 22 is a left view schematically showing that the base curve of the student seat cushion of the structure of the present invention is stretched to obtain the antiskid cumulus basic block;

fig. 23 is an oblique left perspective view of K, Q two face patterns of the antiskid cumulus basic block of the student seat cushion of the structure of the present invention;

fig. 24 is an oblique left side view of K, Q two face patterns of the antiskid cumulus basic block of the student seat cushion of the structure of the invention;

FIG. 25 is a schematic view of the anti-skid cumulus basic blocks of the student seat cushion according to the present invention being trimmed by rounding;

FIG. 26 is a left side schematic view of the student seat cushion of the structure of the present invention after the anti-skid cumulus block edges are rounded;

FIG. 27 is a front view of the structure of the utility model of the natural formation of the vertex C after the anti-skid cumulus edge rounding is completed;

fig. 28 is a cross-sectional curved oblique view of the student seat cushion of the structure of the present invention passing through the top C of the anti-skid dune along the Y-axis direction;

fig. 29 is a front view schematically showing the distribution of the antiskid dunes on the Y-axis direction of the student seat cushion according to the present invention;

FIG. 30 is a schematic view of the edge rounding transition of the lowest part of the buttocks of the student seat cushion according to the structure of the present invention;

FIG. 31 is a cross-sectional view of the student's seat cushion of the present invention along the Y-axis through the lowest point B of the curved surface of the buttocks;

FIG. 32 is a schematic front view of the student seat cushion according to the present invention, showing the variation of the lowest curved surface of the buttocks in the Y-axis direction;

fig. 33 is a bottom view of the structure of the present invention showing auxiliary lines for cutting the embryonic form of the student's seat;

fig. 34 is an oblique view of the structure of the present invention for drawing and cutting the auxiliary line for the prototype of the student seat cushion;

fig. 35 is a schematic view of the structure of the utility model, in which the auxiliary lines are drawn, stretched and trimmed to obtain the embryonic shape of the student seat;

FIG. 36 is a schematic view of the structure of the present invention, in which the rudimental shape of the cushion is rounded to obtain the original shape of the cushion for students;

fig. 37 is a schematic view of the structure of the utility model, after the final zoom adjustment is completed, a completely practical student cushion is obtained;

fig. 38 is a schematic view of a central section curve of the student cushion finished product of the structure of the present invention;

FIG. 39 is a schematic view of the center section wave- "shaped curved surface frame of the student cushion product of the present invention;

FIG. 40 is a left front oblique view of the structural student seat of the present invention;

FIG. 41 is a left rear oblique view of the structural student seat of the present invention;

FIG. 42 is a front view of the student's cushion of the present invention;

fig. 43 is a rear view of the student's cushion of the structure of the present invention;

FIG. 44 is a left side view of the structural student seat of the present invention;

fig. 45 is a bottom view of the student's cushion of the present invention;

FIG. 46 is a top view of the student's cushion of the present invention;

FIG. 47 is a schematic view of the left side of the curve design of the triangular frame of the office cushion of the present invention;

FIG. 48 is a schematic view of the office cushion of the present invention showing a triangle entity by stretching a triangle curve;

FIG. 49 is a schematic view of the anti-skid dune base curve design left squint of the office cushion of the present invention;

FIG. 50 is a left view of the antiskid cumulus basic block obtained by stretching the basic curve of the office cushion of the structure of the utility model;

fig. 51 is an oblique left perspective view of K, Q two face patterns of the anti-slip cumulus basic block of the structural office cushion of the present invention;

fig. 52 is a left side view of the two face draft angles of K, Q of the slip-proof cumulus basic block of the structural office cushion of the present invention;

FIG. 53 is a schematic view of the anti-slip cumulus basic block of the office cushion of the present invention being trimmed by rounding;

FIG. 54 is a schematic view of the edge rounding transition of the lowest part of the buttocks of the office cushion with the structure of the utility model;

fig. 55 is a bottom view of the structure of the present invention for drawing auxiliary lines for cutting the rudiment of office cushion;

fig. 56 is an oblique view of the structure of the present invention for drawing an auxiliary line for cutting a prototype of an office cushion;

FIG. 57 shows the structure of the present invention, in which the auxiliary lines are trimmed by drawing and rounded to obtain the original shape of the office cushion;

FIG. 58 is a schematic view of the final zoom adjustment of the utility model to obtain a fully practical office cushion;

fig. 59 is a schematic view of a central section curve of the office cushion finished product of the structure of the present invention;

FIG. 60 is a schematic view of the center section wave- "shaped curved surface frame of the office cushion product of the present invention;

fig. 61 is a left front oblique view of the structural office cushion finished product of the present invention;

fig. 62 is a left rear oblique view of the structural office cushion finished product of the present invention;

FIG. 63 is a front view of the present invention showing a finished office cushion;

fig. 64 is a rear view of the office cushion of the present invention;

fig. 65 is a left side view of the structural office cushion of the present invention;

fig. 66 is a bottom view of the office cushion product of the structure of the present invention;

FIG. 67 is a top view of the office cushion of the present invention;

FIG. 68 is a bottom view of the structure of the present invention showing an auxiliary line for cutting the embryonic shape of the fishing seat;

FIG. 69 is a perspective view of the structure of the present invention showing an auxiliary line for cutting the embryonic shape of the fishing seat;

FIG. 70 is a view showing the structure of the present invention, in which the auxiliary lines are trimmed by drawing and rounded to obtain the original fishing cushion;

FIG. 71 is a schematic view of the fishing seat of the present invention after the final adjustment of the fishing rod is completed, thereby obtaining a completely practical fishing seat;

FIG. 72 is a schematic view of a central section of the fishing cushion of the present invention;

FIG. 73 is a schematic view of a center section wave- "shaped curved surface frame of the fishing cushion product of the present invention;

FIG. 74 is a left front oblique view of the fishing seat cushion of the present invention;

FIG. 75 is a left rear oblique view of the fishing cushion of the present invention;

FIG. 76 is a front view of the fishing seat cushion of the present invention;

FIG. 77 is a rear view of the fishing seat cushion of the present invention;

FIG. 78 is a left side view of the fishing seat of the present invention;

FIG. 79 is a bottom view of the fishing cushion of the present invention;

FIG. 80 is a top view of the fishing seat cushion of the present invention;

fig. 81 is a schematic diagram of the human body lever effect mechanism of the structure of the present invention.

Reference numbers in the figures:

1. cushion inner core primitive embryo, 2, cushion triangle district, 3, cushion buttock curved surface, 4, cushion antiskid dun, 5, cushion overcoat, 6, cushion intermediate level, 7, cushion nexine, 8, cushion body.

9. Student's cushion 10, student's cushion triangle district, 11, student's cushion antiskid dune, 12, student's cushion buttock curved surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-13, table 1 ("-" type curved surface frame value range parameter table) and fig. 81, the present invention provides a technical solution: the utility model provides a protection coccyx corrects position of sitting and eliminates tired promotion healthy cushion fast, includes cushion body 8, the former embryo of cushion

inner core

1 and 2 integrated into one piece in cushion trigone, and the former embryo of cushion inner core 1 and cushion antiskid dun 4 integrated into one piece, form cushion buttock curved surface 3 between cushion antiskid dun 4 and the cushion trigone 2 simultaneously.

The cushion inner core blank 1 is a wave-shaped-' device made of high-molecular energy-absorbing environment-friendly materials, and the high-molecular energy-absorbing environment-friendly materials (also called as point area deformation recovery materials) are obtained by a tackifying resin modified styrene block copolymer through a special formula and process, meanwhile, the tensile elongation of the cushion inner core blank 1 is 100-1500% (obtained by adjusting the formula according to actual needs), the vertical bearing strength of the cushion inner core blank 1 is more than 200 kg, and the hardness range of the cushion inner core blank 1 is between Shore hardness 10C-75C.

Cushion inner core raw embryo 1 outside parcel has cushion nexine 7, and cushion nexine 7 outside parcel has cushion intermediate level 6, and 5 parcels in the outside in cushion intermediate level 6 of cushion overcoat simultaneously, the size of cushion overcoat 5, cushion intermediate level 6 and cushion nexine 7 and the size looks adaptation of cushion inner core raw embryo 1, and cushion intermediate level 6 and cushion nexine 7 and cushion inner core raw embryo 1 constitute complete inner core.

The cushion inner core blank 1 is made of thermoplastic materials, the melting point of the cushion inner core blank 1 is larger than 200 ℃, and the cushion inner core blank 1 is processed by the methods including but not limited to injection molding, extrusion, plastic dripping, salivation, spraying, casting and the like.

The cushion body 8 is composed of four parts, namely a cushion inner core blank 1, a cushion outer sleeve 5, a cushion middle layer 6 and a cushion inner layer 7.

The utility model discloses a to design the professional cushion that is suitable for the sedentary, will follow following step and advance the explanation:

finding out the cause mechanism of sedentary harm; and establishing a new solution method and a new solution mechanism; selecting a cushion material capable of eliminating or relieving body fatigue; and provides a method for processing and forming the cushion; finally, a cushion modeling principle and a specific method which are in accordance with the human body sitting posture mechanical distribution are designed. Therefore, the mechanism reason, the material, the processing technology and the modeling design are perfectly fused, and an ideal product is manufactured.

The mechanism causes the sedentary harm:

1. sedentary hazard classification

The first category of hazards is mainly caused by physical behaviors and conditions, such as poor sitting posture for a long time, improper sitting posture, improper sitting cushion and the like, and can be avoided and alleviated by changing physical conditions and environments, such as correcting sitting posture, developing good work and rest habits, selecting proper sitting seats, using professional sitting cushions and the like.

The second kind of harm is mainly physiological harm, is fundamentally determined by the existence state of human living things, is inevitable and is inevitable; for example, the sedentary state is a biological existing state, and as long as the sedentary state is achieved, the calorie burning is weakened, the glucose supply for insulin is greatly reduced, and the risk of diabetes is increased; for example, the muscle activity is weakened, the muscle begins to shrink, the cholesterol is increased, the blood sugar concentration is increased, and the obesity risk is greatly increased after long-term sitting; such hazards cannot be ameliorated by changing the physical conditions and environments, but can only be ameliorated by changing the biological existence state of a person, such as changing work without sedentary sitting, and increasing physical exercise and building up body.

In comparison, the second category has a greater effect on the physiological harms, and even irreversible harms to the body, such as diabetes, are difficult to cure radically. By avoiding and ameliorating the physical hazards of the first category, the physiological hazards of the second category can be objectively ameliorated and mitigated, but not eliminated at all. In reality, due to the needs of work and life, many people still have to do work needing long-time sitting, such as pipelining workers, middle school students and the like. Sit harm constantly and all be in, to the people who has to sit for a long time, can use the utility model discloses professional cushion avoids and alleviates first type harm, and then alleviates second type harm as far as possible.

The design mechanism of the utility model is mainly aimed at the first kind of physical hazard, and the first kind of hazard is continuously and deeply explained below, and the second kind of physiological hazard is not explained below.

2. First category causes of sedentary hazards

The reason for item 1 is well understood, for example, the pain of the buttocks in a hard seat, and "calluses" in a long sitting, which is the development of tuberous cysts in the ischial bones due to long-term rubbing of the buttocks against the hard seat. A long-term hard sitting chair can also easily deform and damage the coccyx, cause inflammation and pain, and even cause pain to extend to the legs. The coccyx is accompanied with the miracle ganglion, and the coccyx can be stimulated by coccyx injury, and the visceral dysfunction caused by reflexivity can cause overstrain and disease, the coccyx injury and the premature senility of people. The coccyx pain of office workers and students is usually caused by sedentary. It is common for workers in clothing factories and electronic factories to sit for a long time to cause the tailbone to be damaged.

Avoiding the generation of calluses in the sedentary period, and only using a common cushion; the effect of protecting the caudal vertebra is not good because the common cushion is a flat plate basically, and the functional design for protecting the caudal vertebra is not available.

Traditionally, a person with a damaged coccyx would use a circular cushion shaped like a life buoy because the hollow portion avoids the coccyx site so that pain is not directly stimulated when seated. Although temporarily effective like this, nevertheless because circle cushion inner core is the sponge or be aerifyd, lead to the holding surface to rock the instability, space displacement can aggravate human lever effect, in order to balance human stability, waist muscle is in tensile traction state for a long time and leads to the lumbar muscle strain, and the not good people of coccyx adopts the position of sitting that leans forward easily in addition, and the backbone leads to the hunchback owing to long-term bow bears huge pressure, leads to the hunchback, and long-term hunchback leads to cervical spondylopathy, lumbar vertebrae dish is outstanding, hyperostosis etc. again. In addition, the risk of causing diabetes, obesity, cholesterol excess, muscle atrophy, osteoporosis, etc. is greatly increased. The tail bone is not well protected, and a series of adverse chain reactions can be caused. Therefore, a professional cushion is required to protect the coccyx.

The reason for item 2 is related to a large number of knowledge points, which are specifically described below.

2 nd strip reason: the lever effect of human body induces the release of the balance danger instinct of human body, leads the muscle groups of waist, back and hip to be in a tight state for a long time, and consumes a large amount of physical energy to cause body fatigue. The mechanism is creatively provided by the cushion, the related knowledge points are more and more dense, but each knowledge point is based on physics, modern biology and modern physiology.

It should be noted that soreness of the waist and pain in the back, strain of lumbar muscles, falling pain of buttocks and the like are actually different manifestations of physical fatigue, which cannot be relieved, and the diseases are really accumulated after the physical fatigue is continuously aggravated, and the risks of suffering lumbar disc herniation, cervical spondylosis, hyperosteogeny and the like are greatly increased.

1. Body lever and lever effect:

(1) formation of the human body lever:

the human body is a curved surface, the muscles are soft or hard, the body is thick or thin, the length, the thickness and the distribution of bones are different, in a word, the human body is irregular, the contact surface for supporting the weight of the human body cannot be uniformly distributed on each point, a lever fulcrum can be generated on the support surface, the local or all weight of the human body naturally generates gravity, the stress and the stress direction of each point of the contact surface are not identical, and torque is necessarily generated, so that the lever action in physics is formed, and the human body is pried by the human body; this leverage is induced by the support surface, which may be referred to as support surface induced body leverage.

Human body levers not caused by support surface induction, but classified as non-support surface induction levers; the lever mainly takes a bone joint hinge as a fulcrum, or takes a contact part between bones as a fulcrum, and provides moment by muscle contraction and self gravity;

(2) the human body lever effect comprises:

the human body lever can be divided into a static lever and a dynamic lever in a macroscopic view, and the two levers jointly form a human body lever effect; for example, the human body sits quietly without any action, namely sits quietly, and the lever at this time is a static human body lever induced by taking the instep, the hip, the back, the hand and the arm as supporting surfaces; when a human body sits for a long time, the self gravity acts, the seat surface of the chair slightly deforms, or the sofa continues to sink and rock, or a sitting person straightens the waist, even breathes and moves, and the like, the factors can generate space displacement change, the acting force can also change, and the human body lever changes more or less, so that the dynamic human body lever is formed; in fact, the static human body lever is few (such as in a deep sleep state), and is under the action of dynamic lever in most cases, no matter what posture the human body is, no matter where and where the human body is, the human body is under the action of own lever effect at all times and all the time, and the lever can have a plurality of positions at the same time, and the lever can be large or small, long or short, and can change complex ends ceaselessly, so that the human body can shake in real time in a ceaseless displacement; if the human body is difficult to stand up without stopping the shaking, the human body cannot work and live at all, and in fact, the human body can live well because the instinct of the human body balance danger plays a role in counteracting the influence of the lever falling effect.

2. Instinct of human body balance danger

(1) The instinct of human body balance danger is a self-protection emergency response mechanism and belongs to the instinct of safety requirements; human instincts, which are inherent, not requiring teaching and training, talented abilities or behaviors that humans have evolved; the Maslow theory considers that people have five levels of instinct needs, namely physiological needs, safety needs, emotional needs, respectful needs and self-realization needs; the requirement on safety is an instinct of a human, the whole organism is a mechanism for seeking safety, human sense organs, effector organs, intelligence and other energy are mainly tools for seeking safety, and even scientific and human views can be regarded as a part for meeting the safety requirement; when people face danger, the instinctive measures are taken to counteract the danger so as to achieve the safety purpose, namely the instinctive measures of balancing the danger; the physiological instincts of the human body balance risk are cooperatively accomplished by the sensory system, the nervous system, the brain and the muscle movement, and the physiological instincts of the balance risk are cooperatively accomplished by the sensory system, the nervous system, the brain and the muscle movement.

The balance is generated immediately after the danger crisis, and the aim is to achieve equal force to counteract the danger, but the equal force is not always achieved. The human body faces various dangers, such as automobiles, beasts, machines, cutters and the like, the human body balance danger is the instinct, the chips only have the human body and follow the principles of most direct, most economical, shortest distance and shortest time, so the balance method can only control the muscles of the body to run, jump, dodge, tension, tight muscles, sweat and the like. The instinct of balancing danger is used subconsciously anytime and anywhere in our life, for example, we see that an automobile suddenly comes across and can instinct to dodge to one side, the subconscious judgment of the brain considers that the automobile comes across and risks, and the method of balancing danger is to command the body to dodge; when the user runs, the user instinctively throws the two arms instead of pushing the handle into the trouser pocket, the brain subconsciousness judges that the handle is pushed into the trouser pocket to run and is easy to tumble danger, and a method for balancing the danger is the instinctively throwing two arms; the body of the virtual sitting double-foot-treaded land leans forwards instead of fully sitting or leaning backwards with a relieved feeling when sitting on a strange chair, because the brain consciousness judges that the chair is unsafe, the method for balancing the danger is that the body of the virtual sitting double-foot-treaded land leans forwards to jump at any time; many people have terrorism and move backwards for several steps when a high-rise building is empty, because the brain judges high-altitude danger, the method for balancing the danger is the movement backwards of the natural energy, and the like.

(2) Physiologically, the instincts of balancing risk are synergistically accomplished by sensory systems, nervous systems, brain, muscle movements. The following are introduced respectively:

① sense organs for sensing external object stimulation, wherein the sense organs are responsible for receiving external signals, and different sense organs are responsible for different receiving functions, such as eyes for receiving optical signals and ears for receiving sound signals;

② the nerve cell (neuron) is composed of cell body (nerve cell) and protrusion (nerve fiber) which are criss-crossed to form nerve (neuron network), the nerve fiber has very sensitive information acquisition and transmission function, the nerve cell has basic information storage and processing function, the processed information is transmitted to cranial nerve via nerve fiber, the brain processes the final judgment and sends the processed result information back to neuron, and the neuron is executed by reactor to control relative muscle to make stretching and contracting movement to generate physiological response.

All nerves are combined together to form a nervous system, and the human nervous system consists of two major parts, namely an autonomic nervous system and a non-autonomic nervous system, which are mutually cooperated and mutually balanced. The involuntary nervous system consists of the brain and spinal cord, from which many pairs of nerves extend and connect to muscles, directing the movement of limbs, head and trunk, which we can control more or less with their own volition. The autonomic nervous system controls the activity of the visceral and vascular smooth muscles, cardiac muscles and glands, which are innervated by the brain in response to emotions, but are more independent, especially with involuntary activity. At ordinary times, people cannot feel the activity of the autonomic nervous system, but when the nerves which secrete adrenaline are excessively stressed, people can feel that the heartbeat is accelerated, the palms and the palms are sweaty, the mouth is dry, the tongue is light-headedness and the like. For example, when a car is driven, the brain judges how dangerous the car is in direction and speed, and then responds to command the limbs and trunk to move, whether the car jumps quickly or slowly and how far away from the car, whether the car takes a left foot or a right foot or takes a jump with both feet, which are what we intend to control, and we can feel the activity of the intention and the process is that the involuntary nervous system governs. If the automobile is started, people do not find in advance, the automobile suddenly presses a horn suddenly when passing by the automobile, the sudden loud sound can threaten one jump, the body can be conscious of the current state as a dangerous state, the sudden breath and heartbeat accelerate the sweating of the palm and dilate the pupil, the process is that autonomic nerves are dominated, unconscious reaction is realized, people cannot stop the reaction, but the emotion of the people can be changed to calm down the people.

In the autonomic nervous system and the non-autonomic nervous system, although balance methods for dealing with risks are different, attitudes and directions are consistent, and risks are counteracted as much as possible to achieve safety.

③ the brain, the central nervous system, receives the information from the nervous system and makes the final judgment of danger, and sends out the processing instruction to the nervous system.

④ muscle tissue, the ultimate performer of brain commands, receives the nervous system and performs the stretching action, the different muscle tissues form muscle groups, and the movements of the muscle groups govern the physical activity.

(3) The working principle of the human body balance danger instinct is as follows:

as shown in fig. 81, the sensory system receives external signals, the nervous system stores and processes information and transmits the processed information to the brain, the brain makes risk assessment and makes final judgment, the information of the judgment result is transmitted to muscles by the nervous system to be executed, and different muscle groups perform concerted stretching action to complete the task of balancing risk; the instinct of human body balance risk is acted at all times and places, so that a great number of muscle groups in the body are always in a tight fighting state, and the balance of the body is maintained to offset the risk of brain judgment.

3. Mechanism of action of lever effect and body balance danger instinct of human body and body fatigue

(1) The action mechanism is as follows: as shown in fig. 81, the spatial displacement and force variation signals generated by the lever effect of the human body can be received by the sensory system at any time, the nervous system continuously stores and processes the signals simply, then the information is transmitted to the brain, the brain can confirm that the signals are dangerous signals and needs to offset the danger of balance due to the instinctive action of the danger of balance, the brain continuously transmits the danger processing instruction to the reactor on the relevant neuron through the nervous system, and the reactor governs the muscle group to do telescopic action to complete the task of balancing the danger.

(2) Leading to body fatigue: as shown in fig. 81, the human body constantly moves and shakes at all times, and the instinct of the human body balance risk also acts at all times, so that a great number of muscle groups in the body are always in a tight state for warfare, and the balance of the body is maintained; the instinct can maintain the muscle group in a tense state for a long time, a large amount of energy can be consumed, the oxygen supply in vivo is insufficient, nutrient substances and organism energy are lacked, metabolic waste lactic acid and the like are increased, a large amount of lactic acid is accumulated in the organism in vivo, a large amount of potassium ions flow out in the hydrogen-potassium exchange action of cell membranes, and as the potassium ions are elements necessary for cell metabolism, the muscle cell function is influenced, the muscle fiber contractility is reduced, the muscle contraction is weak, and the body fatigue is caused; therefore, the instinct of the human body balance danger enables people to work and live normally, but also causes physical fatigue; long-term physical fatigue can cause permanent injury, overstrain diseases can cause pathological changes, such as lumbar muscle strain, lumbar disc herniation, scapulohumeral periarthritis and the like; for example, sitting for a long time without any activity may cause soreness and back pain because the muscles of the waist and back are fatigued.

The lever effect of human body is formed by the lever change of human body, the lever effect of human body induces the release of the balance danger instinct of human body, leads the muscle groups of back, waist and hip to be in the state of tightening and fighting for a long time, and consumes a large amount of physical energy to cause the fatigue of body. The lever effect mechanism of the human body is schematically shown in fig. 81.

Through the bedding, people can well understand the reason why the sponge cushion and the similar soft cushion can only be used in common occasions and have little problem when people sit at random for a short time to have a rest, and if the sponge cushion is used in a long-term use under a long-term sitting working state, the sponge cushion is easy to deform under stress due to the form instability of the sponge, is easy to fluctuate and swing, generates space displacement, increases the lever effect of a human body, increases the pressure of the spine of the body, increases the burden of muscle groups on the back, the waist and the hip, strains the muscles, and is easy to relax, so that the first physical injury of the long-term sitting is generated, and the chain reaction is caused in the past, obesity, diabetes mellitus and the like can be possibly caused, and the second physical injury of the long-term sitting; in this regard, it is of practical significance, as well as important and necessary, to design a professional cushion; although the sedentary injuries should not be ignored, since these sedentary injuries do not occur all the time but accumulate over time to cause diseases, people can easily practice the sedentary injuries at ordinary times, and neglect prevention.

Thirdly, selecting cushion materials capable of eliminating or relieving body fatigue

1. The utility model discloses the cushion alleviates body fatigue through improving the holding surface

Through improving the holding surface between human body and the seat, reduce lever effect, reduce the displacement and rock, and then reduce the emergence of the dangerous instinct of human body balance, then reduce muscle crowd state of tightening, reach and eliminate or alleviate body fatigue. Therefore, the device can synchronously eliminate or relieve fatigue, can cut off or block the inducement causing the fatigue of the human body, does not need to impose other additional actions on the body, is physical, safe, environment-friendly and harmless to the human body, belongs to a pre-active prevention method, and belongs to a post-compensation method such as massage.

The best tool for improving the supporting surface is a professional cushion, which is simplest, most direct, effective and economical, the inner core filling material of the cushion is the core of the cushion, and all mechanical property requirements and buffering and vibration reduction functions are integrated.

As explained above, it is known that the conventional materials are all unsuitable: sponge-like loose porous structures are not feasible (because they are easily deformed), too hard are not feasible (because of the first kind of hazards), too soft are not feasible (because of lever effect), easily flowing are not feasible (because of lever effect), shapes are not feasible (because of lever effect) stably, stressed are not feasible (because of lever effect) easily deformed, elasticity is too good, reacting force is obvious because of good elasticity, inelasticity is not feasible (because of lever effect caused by easy deformation), supporting strength is small, deformation is not feasible (because of easy crushing), deformation capability is not feasible (because of no buffering vibration reduction), deformation capability is too good, space displacement is generated because of easy movement), certain stress can involve whole or most area displacement is also infeasibility (because of lever effect), strength is too poor (because of weak durability), and the sponge-like loose porous structures are also needed to be environment-friendly materials.

2. The utility model discloses the cushion adopts polymer energy-absorbing environmental protection material to fill inner core (1) when using this protection caudal vertebra to correct the cushion that the position of sitting dispels fatigue fast and promote healthy, cushion inner core proembryo 1 is made by polymer energy-absorbing environmental protection material, polymer energy-absorbing environmental protection material here, is a material that alleviates human fatigue with the mechanism of restoring of point area deformation, and this kind of material is by tackifying resin modified styrene block copolymer, obtains through special formula and technology. The function is to bear mechanical vibration and impact, buffer and reduce vibration, eliminate and reduce lever effect of human body and relieve body fatigue; the whole inner core blank is solid, the whole inner core blank is made of a high-molecular energy-absorbing environment-friendly material, the material is obtained by tackifying resin modified styrene block copolymer, no frameworks such as metal and plastic exist, the material is integrally formed, spliced and completely integrated, and the high-molecular energy-absorbing environment-friendly material has the following characteristics:

firstly, the macromolecular chain can be slowly stretched and rebounded, the macroscopic tensile elongation can easily reach 100-1500% (obtained by adjusting the formula according to actual needs), and the energy absorption and vibration reduction effects are stronger.

Secondly, strong self-adhesion makes the material have powerful cohesion, and the whole shape of product has good stability, even local atress can not produce whole or rocking of most displacement yet, therefore reduces greatly and produces the displacement space, reduces lever effect greatly, and surface tension strengthens, and surface resilience is good, is difficult for producing permanent deformation, can easily hold in the palm and burden the health weight, has improved life moreover greatly.

And thirdly, the point area deformation resilience is realized, the local point is deformed when being stressed, the deformation returns to the initial state after the external force is eliminated, the product has excellent shape stability, the displacement space is greatly reduced, the lever effect is greatly reduced, the excellent supporting strength is realized, the actual vertical bearing strength even reaches more than 200 kilograms, and the weight is far higher than the weight of a human body.

And fourthly, the deformation is responded instantly, when the product is impacted by the action of external force, the material instantly generates initial deformation to absorb the impact, and along with the deepening of the impact force, the mechanisms of surface tension, cohesion, strong self-adhesion, slow stretching and rebound, point area deformation recovery and the like act together immediately, so that the impact force is digested, and the kinetic energy of the body is easily eliminated.

Fifthly, the hardness range is 10C-75C in Shore hardness, the hardness range is the hardness of the relaxed, tensed and tensed human muscles, the chair cushion is rich in elasticity and supporting strength, is soft but not soft, hard but not hard, and is comfortable when sitting up.

Sixth, the material is thermoplastic, gel state when using at normal temperature, it is heated to above 200 deg.C to become high temperature fluid, it can be processed and shaped, it is injected into special mould to cool naturally, the cooled material is gel state, and the size and shape can be block, strip, sheet and other shapes according to the mould.

Seventhly, the material is statically placed at the high temperature of 120 ℃ for 48 hours, and does not deform and melt; when the alloy is statically placed at the low temperature of minus 25 ℃ for 48 hours, the hardness is increased by about 10A, but the excellent flexibility is kept, and the alloy is not brittle and does not crack.

The material is used as the filler of the inner core of the cushion, the cushion can immediately respond to the use and play a role, and the body fatigue can be eliminated or relieved synchronously with the use process, rather than the body fatigue is compensated and repaired afterwards like massage and the like.

The materials have the effects of fine buffering and vibration reduction under the combined action of the characteristics, and meanwhile, the lever effect of a human body can be effectively eliminated and reduced, so that the defects of the traditional materials are overcome.

(2) The action mechanism of the high-molecular energy-absorbing environment-friendly material is as follows:

when the cushion inner core blank 1 is acted by external force (for example, when a human body sits in the cushion, the cushion inner core is made of the material), the material can deform along the direction of the external force at an action point, the deformation is generated by the slippage of blocked macromolecules, the deformation is slower than the deformation which is not blocked usually, more external force is required to be consumed, and therefore, the energy-absorbing and vibration-damping effect is stronger; when the external force is eliminated, the deformation rebound reset is slow in lag; although the molecules of the tackifying resin block the movement of macromolecules, the base material is an elastomer, a long-chain macromolecule with proper molecular weight can be selected through formula design, the self stretching force is very large, the fact that the macromolecular chain has to be stretched and rebounded to slide when being acted by external force is ensured to be immediately and rapidly ensured, the introduction of the tackifying resin is equivalent to the addition of a large amount of semi-solidified nodes in the macromolecular chain, the macromolecular chain can not slide easily any more, the stretching and rebounding of the macromolecular chain are carried out certainly but lagged, namely the slow rebounding and stretching are carried out, and the phenomenon of the lag can be observed macroscopically by naked eyes.

The slow rebound and extension are carried out by generating deformation firstly and then trying to slowly return to the initial state; the material can generate good energy absorption and vibration reduction, and the surface of an object is required to instantaneously respond to deformation and absorb external force when being acted by the external force, so that the work or kinetic energy exerted by the external force is converted into deformation potential energy; along with the deepening of the impact force of the external force, the deformation is enhanced due to the detention of macromolecule semi-cured nodes and the increase of surface tension along with the deformation, the deformation is quickly changed into slow deformation from the initial immediate instant generation, more extra force is required to be applied in the deformation process, and a large amount of work and kinetic energy exerted by the external force are consumed; external kinetic energy is absorbed through the extension of macromolecules to generate deformation potential energy, and the potential energy is converted into heat to be released in the rebound and contraction process of the macromolecules; the macromolecule shrinkage is carried out through slow rebound, the restraint of semi-cured joints and the mechanical resistance of strong self-adhesion of materials need to be overcome, and a large amount of potential energy needs to be consumed in the rebound process, so that the part which is finally converted into heat energy is not too much through the slow stretching and rebound processes, and the heat is dissipated, and the slow rebound mechanism can sufficiently respond in real time for the action frequency and the action strength of external force under the practical application environment, so that the energy absorption and vibration reduction effects can be realized under static or dynamic conditions, the generated heat is difficult to accumulate, and even obvious temperature rise cannot be sensed; the above mechanism is not only suitable for the whole material, but also suitable for the part with small area of the material, so the mechanism is called as a point area deformation recovery mechanism; this makes the material have powerful cohesion, and the whole shape of product has good stability, even local atress can not produce whole or most displacement's rocking, therefore greatly reduces and produces the displacement space, greatly reduces lever effect.

Cushion processing and forming method

1. The cushion inner core blank 1 forming method comprises the following steps:

the inner core is made of a high-molecular energy-absorbing material, and the material adopts a thermoplastic elastomer of a styrene block copolymer as a main base material, so that the thermoplastic processing characteristic of the elastomer material is inherited; when the damping material is used at normal temperature, the damping material is in a gel state, is heated to more than 200 ℃ to become high-temperature fluid, can be subjected to subsequent processing by adopting machine equipment for processing plastics, and can be prepared into various damping products by processing technologies such as injection molding, extrusion, plastic dripping, salivation, spraying, casting and the like; the blank for making the inner core of the cushion can be poured or injection molded.

The casting process comprises the following steps: putting the gel-state material into a hot melting machine, heating to above 200 deg.C to obtain high temperature fluid, injecting into a model with specific shape, naturally cooling, cooling to obtain gel state, and determining the size and shape according to the model, and making into various shapes such as block, strip, and sheet. During injection, the material can be injected into the model by the gravity of the material, and the injection can be pushed by compressed air or inert gas.

The injection molding process comprises the following steps: and (3) putting the gel-state material into an injection molding machine, adopting a specific mold, adjusting injection molding parameters, wherein the temperature is 190-210 ℃, the pressure is 50-75MPa, the mold temperature is 50 ℃, and the injection molded product is the cushion inner core blank.

2. The cushion finished product forming method comprises the following steps:

one or more layers of fabric cloth are directly coated outside the cushion inner core blank 1, the finished cushion can be obtained after the cushion is completely sewn, and the coated fabric cloth usually comprises three layers:

coating an inner core blank: the inner layer 7 of the cushion is usually coated by non-woven fabrics, and has the function of protecting the inner core and facilitating subsequent coating.

The cushion middle layer 6 is usually sewn by pure cotton cloth, the cloth is cut according to the outline size of the cushion inner core blank 1, the cushion inner core blank 1 coated by non-woven fabric is arranged in the cushion inner core blank, the whole cushion inner core is obtained after complete sewing and packaging, the inner core seal is generally ironed and sealed by hot melt adhesive tape, so that the inner core is a whole body and does not need to be disassembled in later use, the whole inner core is washed by hand if needing to be cleaned, and the cushion inner core can be repeatedly used after being spread and dried, the service life of the inner core is very long, and the cushion inner core can be used for more than five years without problems.

The outmost polyester dacron cloth that adopts the multilayer complex usually of cushion overcoat 5 is made up, tailor the cloth according to making inner core overall dimension, and the concatenation is made up, pack the inner core into wherein, make up the encapsulation again and finish, obtain complete finished product, the overcoat seals and generally can adorn the zip fastener, conveniently unpick and wash and change later on, the overcoat of the polyester dacron of multilayer complex is resistant scraping, wear-resisting, resistant dirty, easy washing, the color is beautiful, because the multilayer is compound, the gas permeability is good, feel comfortable, it is comfortable to sit and remove buttock sense of touch.

Sometimes, in order to be convenient for customers to save economy and save cost, an inner core middle layer is usually cancelled, an inner core blank coated by non-woven fabric is directly put into a coat, a coat zipper is cancelled, and a hot melt adhesive tape is adopted to iron and seal a seal, so that the obtained cushion finished product is a whole, the cushion does not need to be disassembled in later use, the whole cushion is washed by hands during washing, and the cushion is spread and dried for reuse. This saves costs, but the use function is not affected at all.

Design principle of cushion modeling

1. The principle of modeling design:

the mechanical distribution of human body in sitting posture is required to be met; the cushion of the utility model pays attention to the direct and close protection to the coccyx, most of the seats and stools have no design for protecting the coccyx, and most of the cushions also have no design for protecting the coccyx, so that the deformation of the physiological radian of the coccyx is easy to be damaged after long-time sitting; the design is designed aiming at the inner core blank firstly, but also is designed for the cushion finished product, because the cushion inner core is directly coated with flexible fabric cloth, the finished product obtained after sewing almost completely maintains the shape structure of the inner core blank; the cushion product has wide adaptation surface as much as possible due to modeling, can be matched with a chair, a stool and a table for use, and can also be placed on the ground for independent use, such as offices, workshops, classrooms of schools, household floors, bay windows, floors, seats, steps, grasslands and the like; applicable persons include office workers, workshop workers, students, engineers, programmers, the elderly, children, patients, drivers, people with bad waist, people with frequent pain in the coccygeal bone, and the like; the modeling is beautiful, economical and practical, and is beneficial to the public.

2. Wave shape- "curve shape and its structure

(1) The utility model discloses the cushion structure is clear and definite: the curved surface of the three is naturally and smoothly transited, and the specific expression of the wave-shaped to curved surface frame is the central section of the cushion, as shown in figures 12-13. The key structural parameters and the value ranges are shown in table 1 (a parameter table of the value range of the- "type curved surface frame) below.

According to the height of the human body sitting posture, the high-posture sitting posture, the middle-posture sitting posture and the low-posture sitting posture can be divided into a high-posture sitting posture, a middle-posture sitting posture and a low-posture sitting posture, as shown in fig. 9-11, the human body has the lever effect influence due to the self gravity and the irregular structure, and has the unstable tendency of naturally leaning backwards and sliding forwards.

Therefore, the triangular area is designed to prevent the back from bending backwards, the triangular area also plays a role in protecting the caudal vertebra, and when the caudal vertebra is protected by effective force, the waist and the back of a person can stretch and straighten naturally, which is the physiological natural reaction of the human body. The straight waist and back reduces the bow and the humpback, greatly reduces the lumbar lever effect, reduces the pressure of the vertebral column, and is naturally beneficial to physical and psychological health, so the good protection of the caudal vertebra has direct benefits to the physical health. The utility model discloses the cushion attach importance to the direct docile protection of coccyx very much, and most seats do not have the design of protection coccyx with sitting the bench, and most cushions also do not have the design of protection coccyx, and it is impaired to sit for a long time to lead to the physiological radian of coccyx to warp easily.

Thus, the hill is designed to resist the tendency of the body to slide forward, as does the stabilizing effect of the saddle on the human body when riding a horse.

Therefore, the curved surface along the arc trend of the buttocks is designed between the triangular area and the anti-slip dune, the gravity center of a human body is enabled to fall at the lowest position of the curved surface, the gravity is dispersedly transmitted to the arc surfaces all around, the stress of the buttocks is even and very small, the buttocks can be kept comfortable even if the human body is seated for a long time, and the feeling of tired or pain of the buttocks due to excessive local stress can be avoided.

(2) Wave-' curved surface frame and frame key parameter thereof

As shown in fig. 12-13, the wave shape- "shape curved surface frame (the central section of the cushion) is the core frame structure of the cushion shape of the present invention, and other parts of the cushion are obtained by changing on the basis of the frame structure.

Parameter value application, for example one:

1. determining the parameter Ha-b is 40mm (when Ha-b is less than 40mm, the net height of the triangular area is insufficient, which is not beneficial to effectively protecting the caudal vertebra);

2. determining the parameter Hc-b is 5mm (if Hc-b is less than 5mm, the net height of the antiskid hump is insufficient, which is not beneficial to preventing the human body from inclining forwards and sliding downwards);

3. if the cushion is thinned, Hb is 7mm (Hb is less than 7mm, the thickness of the curved surface of the hip is insufficient, and the cushion is not damped);

4. the total height of the vertex of the triangular area is Ha Hb + Ha-b 7+ 40-47 mm (the maximum height of the finished product is also obtained);

5. the total height of the obtained anti-skid hill top point is Hc Hb + Hc-b 7+ 5-12 mm;

6. when the inclination angle β of the triangular area is 75 degrees, Lob is 95mm (under the condition of keeping the height of Ha unchanged, the smaller the inclination angle β is, the shorter the distance width Lob of the hip barycentric line is, when β is less than 75 degrees and Lob is less than 90mm, the space for placing the hip is reduced and narrowed, and the comfort is reduced, otherwise, when the inclination angle β is more than 88 degrees, the hip is close to vertical, the product demoulding is difficult, the production difficulty is increased, and the process cost is increased);

7. the total length of the cushion Lox is 250mm (the total length of the cushion Lox is 250mm, which is suitable for people with small buttocks, and Lox is less than 250mm, so that the space for placing the buttocks is reduced and narrowed, and the comfort is greatly reduced);

parameter value application, example two:

1. the parameter Ha-b is determined to be 120mm (when Ha-b is more than 40mm, the clear height of the triangular area is too high, although the caudal vertebra can be well protected, the overhigh triangular area is similar to a backrest, and the use independence of the cushion is reduced;

2. determining that the parameter Hc-b is 50mm (if Hc-b is more than 50mm, the net height of the antiskid hump is too high, although the human body is successfully prevented from inclining forwards and sliding downwards, the human body can raise the thigh and has the diaphragm corresponding to the thigh in a sitting state, and the sitting comfort level is reduced);

3. if the cushion is wanted to be thickened, Hb is 40mm (Hb is more than 40mm, the thickness of the curved surface of the hip is too thick, the buffer and vibration reduction functions are surplus, the cost is increased, and meanwhile, the sitting height is raised, and the comfort level is reduced);

4. the total height of the vertex of the triangular area is Ha Hb + Ha-b 40+ 120-160 mm (the maximum height of the finished product is also obtained);

5. the total height of the obtained anti-skid hill top point is Hc Hb + Hc-b 40+ 50-90 mm;

6. when the inclination angle β of the triangular area is 88 degrees, Lob is 107mm (under the condition of keeping the Ha height unchanged, the smaller the inclination angle β is, the shorter the hip barycentric distance Lob is, when β is less than 75 degrees and Lob is less than 90mm, the space for placing the hip is reduced and narrowed, and the comfort is reduced, otherwise, when the inclination angle β is more than 88 degrees, the hip barycentric distance Lob is close to vertical, the product demoulding is difficult, the production difficulty is increased, and the process cost is increased);

7. here, the total length of the seat cushion Lox may be 500mm (Lox is 500mm suitable for a person with large buttocks, and Lox > 500mm makes the space for placing buttocks too loose, which reduces the degree of fit between the seat cushion and buttocks and also reduces comfort).

Concrete method for cushion modeling design

As shown in fig. 14-46, the specific operation method is described in the following "example two: the design of a structural modeling' example of the student seat cushion is not repeated herein.

The basic operation steps follow: "drawing triangle area curve … … to draw entity 10 … … drawing antiskid dune base curve … … to draw basic block 11 … …, drawing die to make slope … … and rounding to obtain antiskid dune 11 … … and rounding to obtain buttock minimum curve 12 … … drawing cushion appearance contour auxiliary line … … drawing die drawing stretching sheet, cutting cushion prototype 9 … … and rounding trimming edge to obtain prototype cushion 9 … …, finally drawing and enlarging zoom body to obtain cushion finished product 9".

Seventhly, summarizing:

starting from analyzing the cause mechanism of sedentary fatigue, providing a solution (designing a professional cushion and improving a supporting surface), selecting a proper inner core material (a high-molecular energy-absorbing material), determining an inner core production process, selecting a proper inner core coating material and a proper fabric, determining a cushion finished product forming process, then carrying out a targeted professional modeling design, and finally manufacturing a practical finished product. In the whole process, the most distinctive characteristics and values are as follows:

1. the mechanism reason of fatigue caused by sedentary sitting is clearly suggested: the lever effect of human body induces the release of the balance danger instinct of human body, leads the muscle groups of waist, back and hip to be in a tight state for a long time and to be ready for war, and leads to body fatigue due to a large amount of physical consumption, wherein the related knowledge points are more and more intensive, but each knowledge point is based on physics, modern biology and modern physiology.

3. The method for relieving the body fatigue by improving the supporting surface is definitely provided, the lever effect is reduced, the displacement shaking is reduced, the dangerous instinct of human body balance is further reduced, the tight state of muscle groups is further reduced, the body fatigue is eliminated or relieved, and the fatigue can be synchronously eliminated or relieved due to the improvement of the mechanical state of the sitting posture of the human body.

4. The sponge is definitely abandoned, the inner core is filled with the high-molecular energy-absorbing environment-friendly material, the material is obtained by modifying styrene block copolymer with tackifying resin, no frameworks such as metal, plastic and the like exist, the material is integrally formed, no splicing exists, and the material is completely an integral body. The inner core is a cushion core and has the functions of bearing mechanical vibration and impact, finely buffering and damping vibration, synchronously eliminating and reducing lever effect of a human body and relieving body fatigue.

5. The direct and comfortable protection design is definitely carried out on the caudal vertebra part, and most of seats, stools and cushions do not have the design for protecting the caudal vertebra.

5. A model structure of a- ' type curved surface frame which is composed of a triangular area 10, a hip arc curved surface and an anti-skid hill 11 is provided definitely, the specific expression form is a central section curve of a cushion, and key parameters and a value range of the- ' type curved surface frame (a- ' type curved surface frame value range parameter table) are specified definitely.

6. The specific method and step specification of the cushion shape design and how the relevant parameters take values are definitely given.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Example two:

a structural model of the student seat cushion is designed.

The student is typical sedentary, is in the health growth stage, and the lesson is heavy moreover, and long-time sedentary is serious to body and mind harm, therefore, requires that the cushion of design will have the correction position of sitting effect, and the cushion area is good enough, can not be too loose, loose just reduces the correction efficiency, and the cushion still will adapt to and sit for a long time and keep comfortable, and the cushion curved surface caters to the buttock laminating and wants good, with the balanced dispersion of buttock pressure, can help moulding healthy body type. As shown in fig. 14-46, the specific structural design and modeling process is as follows:

the student seat cushion 9 is filled with a seat cushion inner core blank 1; the student seat cushion 9 and the triangular area 10 are integrally formed, the student seat cushion 9 and the anti-skidding dune 11 are integrally formed, meanwhile, a hip curved surface 12 is formed between the anti-skidding dune 11 and the triangular area 10, the cushion inner layer 7 is a wave- 'device made of non-woven fabric, the cushion middle layer 6 is a wave-' device made of pure cotton cloth, meanwhile, the cushion outer sleeve 5 is a wave- 'device made of polyester cloth, the student seat cushion 9 is composed of the triangular area 10, the anti-skidding dune 11 and the hip curved surface 12, and meanwhile, the surface of the student seat cushion 9 is in a wave-' shape.

Design triangle part

1. Constructing a triangular area curve in a-' shaped frame:

as shown in fig. 14, the arc at triangle apex a and the AB arc, which is also the upper portion of the hip curve, are plotted.

(1) Firstly, making a preset total length line segment OX of the student seat cushion 9, such as Lox being 280 mm;

(2) a parallel reference line P1P2 is formed above the line OX, and the height Hp of the reference line is slightly higher than the vertex a of the triangular area 10, for example, we preset Ha to 83mm, then Hp to 105mm can be set;

(3) a parallel line is formed above the line segment OX and is sealed with the line segment OX, the height Hb is 15mm, and the height Hb is the preset minimum thickness of the student seat cushion 9

(4) Taking an end point O as a starting point, making an upward oblique line to intersect with a reference line P1P2, wherein the intersection point is P, and the inclination angle β of the preset triangular region 10 is 85 degrees;

(5) presetting the hip gravity center line width Lob as 82mm (here, presetting 82mm, and stretching and lengthening treatment is carried out during later adjustment);

(6) the hip gravity center line is intersected with the line segment OX and the parallel line, and the intersection point B is the lowest point of the hip curved surface 12;

(7) an arc tool is used for connecting the intersection point P and the intersection point B, the arc radius value Rab is 130-400 mm, Rab is lower than 130mm, and the support strength is reduced due to insufficient thickness of the triangular area 10; rab is higher than 400mm, the AB arc line is closer to the straight line, the fitting effect of the triangular area 10 and the hip of the body is reduced, and the effect is good when Rab is 200mm through repeated tests.

(8) Picking up the line segment OP and the curve BP by using a fillet tool, and trimming the circular arc at the vertex A of the triangular area 10, wherein the radius value Ra of the trimmed circular arc is 5-15 mm, Ra is lower than 5mm, and the top of the triangular area 10 becomes single thin; and when Ra is higher than 15mm, the height of the triangular area 10 is reduced, the effect of protecting the caudal vertebra is weakened, and after repeated tests, the effect is good when Ra is 8 mm.

As shown in fig. 14, the parameters in the present design take values of Lox 280mm, Hp 105mm, Hb 15mm, β 85 °, Lob 82mm, Rab 200mm, and Ra 8 mm.

2. Stretching the curve of the triangular area 10 to obtain a triangular solid

The buttocks, the crotch and the part connected with the back waist of the human body are wide, have small fluctuation and are relatively flat, so that the distribution of the triangular area 10 in the Y-axis direction is not greatly changed, and the central section state is basically maintained, which is explained by using a design example, the triangular area 10 is unfolded, the curve of the triangular area 10 is stretched to obtain a triangular solid, and meanwhile, the base thickness of the bottom of the student seat cushion 9 is stretched to obtain a rectangular solid, as shown in figures 15-16.

Parameter values for fig. 15 illustrate:

the length La of the triangle body must be capable of completely covering the width of the caudal vertebra of the spine, the minimum is not less than 160mm, and the maximum is limited by the maximum width of a cushion product to be designed, and is not more than 600mm generally. In the design example, a rectangular cushion is designed, and the triangle length La is 260mm through experience.

The width W of the cushion must be such that it can completely cover the width of the ischia of the buttocks, the minimum is not less than 250mm, and the maximum is limited to the maximum width of the cushion product to be designed, usually not more than 600 mm. In the present design example, the seat cushion is a rectangular seat cushion, and the triangle length W is 358mm by experience.

The length Lox of the cushion can completely cover the buttocks and the roots of thighs, the minimum length is not less than 250mm (Lox is less than 250mm, so that the space for placing the buttocks is reduced and the space for placing the buttocks is narrow), the maximum length is limited by the sum of the lengths of the buttocks and the thighs, and the maximum length is not more than 500mm (Lox is more than 500mm, so that the space for placing the buttocks is too loose, and the fitting degree of the cushion and the buttocks is reduced). In the design example, the cushion is rectangular, and the cushion length Lox is 280mm through experience.

The minimum thickness Hb of cushion is in 7-40 mm scope, and Hb is less than 7mm then buttock curved surface thickness not enough, unfavorable buffering damping, and Hb is greater than 40mm then buttock curved surface thickness too thick, and buffering damping function is surplus, and the cost increases, can raise simultaneously and sit into the height, reduces the comfort level. The cushion is rectangular in the design example, and the minimum thickness Hb of the cushion is 15mm through experience.

3. Principle of trigonal variation

(1) The height of the triangular area of the V-shaped curved surface frame with the wavy central section of the cushion is the highest point A of the cushion, and the height of the triangular area is required to be close to or cover the height of the tip of the caudal vertebra of a human body in a sitting state, so that the caudal vertebra can be effectively protected. For example, as shown in fig. 17, the triangle body is kept in the equal height state, and is conservatively designed, and only two ends start descending and transition.

(2) The triangular region curve moves in the Y-axis direction to form a triangular body, the length of the triangular body can be different, and the triangular body can also be subjected to appearance change, but the caudal vertebra can be effectively protected, the body can be prevented from bending backwards, and the body weight and the kinetic energy of movement can be supported. For example, as shown in FIG. 18, the triangle changes to gradually decrease from the middle vertex to both sides.

Designing anti-skid hill part

After a student sits on the cushion 9, the thighs are arranged in front, the lower sides of the thighs are tightly attached to the anti-skidding dunes 11, and therefore the anti-skidding dunes 11 need to descend in the Y-axis direction to change, and a space is made for arranging the thighs.

1. The base curve of the skid proof dune 11 is constructed as shown in fig. 19-20:

(1) four angles of 9 bottom cuboids of student's cushion carry out the limit radius earlier, and radius R is 50mm, carries out the curved surface circular arc in the follow-up design of dun 11 for making things convenient for occasionally and prunes, also can not use the limit radius here, omits this step.

(2) S, T, V, U four points are determined on the upper surface of the cuboid, and an artistic spline curve is naturally made through S, V, U three points, wherein S, T two points are simultaneously positioned on the plane of the wave-shaped- "triangular region 10 framework, and V, U two points are symmetrical about the line segment ST.

(3) U, V the distance Wuv between two points is Wut + Wtv, Wuv is not less than 30mm at least (Wuv < 30mm, the obtained anti-skid hill 11 is narrow and small, and the effective anti-skid function of preventing the body from inclining forward and sliding down is reduced), Wuv is not higher than half (W/2) of the width W of the student seat cushion 9 at most, and is usually not higher than 200mm (Wuv > 200mm makes the anti-skid hill 11 too wide, which raises and stresses the thigh, and reduces the comfort of the student seat cushion 9).

(4) S, T, the minimum distance Lst between two points is not less than 30mm (Lst < 30mm, the obtained anti-skid hill 11 is short and small, the effective anti-skid function for preventing the body from tilting forward and sliding down is reduced), the maximum distance Lst is not higher than half of the line segment BT (Lbt/2), Lbt ═ Lox-Lob (Lst > Lbt/2, the anti-skid hill 11 is too long and large, the space for placing the buttocks is compressed too much and is narrow, the comfort of the student seat cushion 9 is reduced), in the design example, Lbt ═ Lox-Lob ═ 280-82 ═ 198mm, Lbt/2 ═ 99mm, and the value Lst is 80mm by experience.

2. Stretching the non-skid dune base curve to obtain the non-skid dune basic block, as shown in FIGS. 21-22:

considering that the subsequent design of the anti-skid dune 11 can be changed, the height Hf of the basic block of the anti-skid dune 11 ranges from 10mm to 60mm, the obtained anti-skid dune 11 is shorter and smaller when Hf is less than 10mm, the effective anti-skid function for preventing the body from inclining forward and sliding down is reduced, the effective anti-skid function is reduced when Hf is more than 60mm, the anti-skid dune 11 is too high and too large, the space for placing the hip is compressed too much and narrowed, the root of the thigh can be lifted, the comfort of the student seat cushion 9 is reduced, and in the design example, Hf is 45 mm.

3. As shown in fig. 23-24, a drawing tool is used to incline two K, Q surfaces of the basic block of the anti-skid dune 11, two K, Q surfaces of the basic block are inclined to lay a cushion for subsequent arc curved surface design, the inclination angle of the drawing tool is α and γ, the size of α affects the gradient of the anti-skid dune 11 facing the human body direction, the value range of α is 5-15 °, α < 5 ° obtains a higher gradient of the anti-skid dune 11, the space for placing buttocks is compressed, the comfort of the student seat cushion 9 is reduced, α > 15 °, the gradient of the anti-skid dune 11 is lower, the effective anti-skid function for preventing the body from tilting forward and sliding down is reduced, the size of γ affects the gradient of the anti-skid dune 11 departing from the human body direction, γ < 5 ° increases the height of the anti-skid dune 11, raises the thigh root of the student seat cushion 9, γ > 60 ° makes the gradient of the anti-skid dune 11 lower and reduces the effective anti-skid function for preventing the body from tilting forward and sliding down, in this design example, α is set by experience.

4. As shown in fig. 25, an edge rounding tool is used to perform curved surface arc postprocessing on a basic block of the anti-skid hill 11 to obtain the anti-skid hill 11, the edge rounding radius can be adjusted in size, is not fixed, is set to be appropriate, and only needs to repeat the process of "design- - -actual verification- - -design modification- - -re-verification- - -design determination" to obtain appropriate data, and through experience, the edge rounding radius in the design of the example is respectively 74mm for R1 mm, 220mm for R2 mm, and 40mm for R3 mm. After the curved surface treatment, the no-skid hill top C is formed naturally, and as shown in fig. 26 to 27, parameters at this time are Hb of 15mm, Hc of 47.7968mm, and Hc-b of 32.7968 mm.

5. Principle of variation of the anti-skid hill 11:

(1) the peak C of the antiskid dune 11 of the wave shape-' curved surface frame of the central section of the student cushion 9 is kept, so that the function that the antiskid dune 11 prevents the human body from inclining forwards and sliding downwards is ensured.

(2) As shown in fig. 28 to 29, starting from point C, descending changes are made to both sides along the Y-axis direction, and the trend of descending change speed is not necessarily constant, but needs to be designed according to the use of the cushion, and reasonable changes are made according to the pertinence, for example, the cushions for students, office staff, and workshop staff are different and all make professional characteristics.

(3) The descending change of the anti-skid dune 11 is suitable for conveniently arranging thighs, but the thighs are not excessively lifted and are not diaphragmatically pressed, so that the sitting comfort with the buttocks and the thighs is ensured, and the sitting comfort is not rejected.

(4) Students are typical sedentary, and are in a growing period of their bodies, and need to maintain a good sitting posture or to correct the sitting posture, so the hill-slip design will be a little higher and the change will be gentle, which can force the thighs to be slightly raised. When students study and write work, when sitting in a correct sitting posture, the buttocks, the waist and the back can be comfortable, the buttocks are not painful, and the students cannot feel tired after sitting all day long, so that the cushion plays a role to the maximum and is beneficial to preventing bow, waist and humpback. On the contrary, if the sitting posture of the student is poor, the student feels uncomfortable at the hip, the waist and the back, and naturally adjusts the sitting posture, so that the student can form a habit of good sitting posture, correct the sitting posture and be beneficial to physical and mental health.

Thirdly, designing the lowest part of the curved surface of the hip

The upper part of the hip curve has been included in the triangular AB section curve design, where the lowest part design is emphasized, as shown in FIGS. 30-32.

As can be seen from the central section of the- 'shaped curved frame, the lowest point B of the curved surface of the buttocks is the falling point of the gravity center of the body and is also the thinnest part of the-' shaped curved frame on the cushion. As the falling point of the center of gravity, it is necessary to keep the weight of the cushion on the seat and to distribute the pressure balance (the triangle and the hump bear partial pressure), and it is necessary to maximize the contact surface between the cushion and the buttocks and to keep the cushion in conformity with the buttocks, and it is necessary to keep a smooth curved surface rather than the rise and fall at this portion.

1. As shown in fig. 30, when the point B of the lowest point of the hip curved surface is rounded, an arc curved surface is obtained, and the point B also drifts forward. The edge rounding radius can be adjusted in size, is not fixed, is set to be proper in size, and can be obtained through repeated processes of design, actual verification, design modification, verification and design determination, wherein the edge rounding radius R is 50mm empirically in the design.

2. Variation principle of the lowest part of the curved surface 12 of the buttocks:

(1) keeping the lowest point B of the hip curved surface 12 of the student cushion 9 central section-' shaped curved surface frame to ensure that the body gravity center falls in the area.

(2) Starting from the point B as the center, the X-axis and the Y-axis extend to the same height along the Y-axis direction, and the height of the point B is kept without changing the descending or ascending.

(3) As shown in fig. 31-32, starting from point B, the extension is made to be equal in height along the Y-axis direction toward both sides of the X-axis, and the total length of the extension is larger than the width of the contact surface of the buttocks, which is the width W of the student seat 9.

(4) Under the normal sitting posture state of a human body, the human body has the movement tendency of forward sliding and backward leaning, but the left side and the right side are relatively stable, and the possibility of sliding towards the two sides is very low, so the minimum value of the width of the student seat cushion 9 only needs to be ensured to exceed the width of a hip contact surface, the size of the hip is about 250mm, the maximum value of the width of the student seat cushion 9 is about 600mm according to the width of a seat, and the width W of the student seat cushion 9 is 250-600 mm;

fourthly, designing the original cushion

In the foregoing, the shape of the- "shaped curved surface of the student seat 9, the functional functions of each part, the key parameters, the parameter value method and range, the design of the triangular area 10, the design of the anti-skid hump 11, and the design of the lowest hip curved surface 12 have been explained, and the structural structure of the main body of the student seat 9 can be clearly expressed through these. The main structure is the essence of the cushion of the utility model, and mainly plays the role of mechanics. The design of the cushion edge profile, which is primarily responsible for presenting the aesthetic appearance, is set forth below.

1. Auxiliary line for drawing and cutting

As shown in fig. 33-34, a closed rectangular auxiliary line is first formed on the lower surface of the bottom of the seat cushion. The rectangular length and width of auxiliary line are not fixed, can adjust according to actual need, but must include the main part of trigone and skid proof dune into to keep the upper and lower symmetry integrality, in order to guarantee that cushion mechanics function is not weakened. In the design of this example, the length of the auxiliary line rectangle is set to be L of 250mm, the width is set to be W of 220mm, and the radius of the four corners is set to be R of 50 mm.

2. As shown in fig. 35, the auxiliary rectangular curve is drawn into a curved surface at a drawing angle of 5 °, and the drawing angle is not too large for the purpose of beauty and easy demoulding and taking out during product production. And (4) carrying out solid trimming by using the curved surface drawn by the drawing die to obtain the cushion prototype.

3. As shown in fig. 36, the edge contour of the cushion prototype was edge-rounded (R is 8mm) to obtain a prototype cushion. The cushion has all elements of a functional main body and an appearance outline, but the size, the width and the length are obvious and not completely practical, so final adjustment is needed according to actual use requirements.

Fifthly, finally, zooming adjustment is carried out

As shown in fig. 37, in order to achieve full practicability, a pantograph tool is used to finally adjust the prototype cushion, the cushion width W is 340mm when the prototype cushion is stretched in the Y-axis direction, the length Lox is 300mm when the prototype cushion is stretched in the X-axis direction, and the resultant student cushion is kept unchanged in the Z-axis direction, so that a student cushion product with full practicability is obtained.

As shown in fig. 38-39, the center section of the finished student seat cushion is taken, that is, the "to" type curved surface frame structure, and the finally obtained relevant parameters in this example are Ha 83.6441mm, Hb 15.3343mm, Hc 47.9028mm, β 84.0067 mm, Ha-b 68.3098mm, Hc-b 32.5685mm, LOb 118.1975mm, and LOX 300 mm.

Sixth, the product is displayed

As shown in fig. 40-46, the finished student seat designed according to the present example is shown from different angles.

This design example is gone on to student's family correction position of sitting, and the trigone 10 part had both prevented the health to pitch backwards, also protected the caudal vertebra simultaneously, and when the caudal vertebra part received the docile protection of effective dynamics, people's back can stretch out straight naturally, and this is human physiology natural reaction, and the back is straight and straight has reduced bow waist hunchback, has also significantly reduced lumbar vertebrae lever effect, reduces spinal column pressure, and the nature is favorable to physical and mental health, consequently has protected the caudal vertebra to have direct benefit to healthy.

Here, the design of the anti-skidding dune 11 is intentionally improved, Hc is 47.9028mm, except the effect of stabilizing the student body, when still lying in the student and using, sitting upright and sitting will feel very comfortable and free, sitting for a long time is not tired, if stick up bad sitting postures such as leg joint, the thigh root will feel diaphragmatic, the travelling comfort reduces, this just forces the student to be unconscious and upright sitting posture to reach and correct the sitting posture, shape the body type, alleviate spinal pressure, alleviate body fatigue, eliminate the burden of soreness of waist back pain thigh pain.

The curved surface along the arc trend of the buttocks is designed between the triangular area 10 and the anti-slip dune 11, so that the gravity center of a human body falls at the lowest part of the curved surface, the gravity is dispersedly transmitted to the peripheral arc surface, the stress of the buttocks is uniform and very small, the buttocks can be kept comfortable even if the human body sits for a long time, and the feeling of tiredness or pain of the buttocks caused by excessive local stress can be avoided.

TABLE 1-type curved surface frame value range parameter table

Example three:

a cushion for office long-time sitting staff is designed.

The cushion is also suitable for other long-term sitting persons, such as clothing factory workers, electronics factory workers, programmers, telemarketers, e-commerce artists, computer engineers, technicians and the like, wherein the long-term sitting persons need to sit for six to ten hours each day, the long-term sitting persons have serious health risks, and the traditional common cushion is far from meeting the use requirements of the long-term sitting persons. The design steps are as follows:

design points of

Office personnel are also typical sedentary, and such personnel have been the adult, have more stable custom in work and life, and the appeal to correcting the position of sitting is lower, and because the operating time is long more painstakingly, pay more attention to keep comfortable experience degree for a long time, sit for a long time not tired, can alleviate soreness of waist back backache and protect waist beautiful buttockss. When the person frequently rises and sits in the practical work, the person often crosses or even tilts legs, the actions are not good for physical health, but the movement is objective, and the student is difficult to regulate the sitting posture of the adult like a student, so the design height Hc of the anti-skid dune needs to be lowered, more space for arranging thighs is reserved, and the thighs can be conveniently bent and stretched to move; the appearance is designed to be rectangular, the utilization area is large, the area is wider than that of a student seat cushion, and the student seat cushion is loose in sitting; the design requirement is mainly comfortable, and the physical fatigue can be effectively relieved.

Cushion forming process

1. The inner core blank is made of a high molecular energy-absorbing environment-friendly material (also called a point area deformation recovery material).

2. An inner core blank forming process comprises the following steps:

(1) the casting process comprises the following steps: putting the gel-state material into a hot melting machine, heating to above 200 deg.C to obtain high temperature fluid, injecting into a model with specific shape, naturally cooling, cooling to obtain gel state, and determining the size and shape according to the model, and making into various shapes such as block, strip, and sheet. Can utilize material self gravity to pour into the model into when pouring into, also can adopt compressed air or inert gas to promote to pour into, the gel that the cooling finishes is exactly the utility model discloses a cushion inner core proembryo.

(2) The injection molding process comprises the following steps: and (3) putting the gel-state material into an injection molding machine, adopting a specific mold, adjusting injection molding parameters, wherein the temperature is 190-210 ℃, the pressure is 50-75MPa, the mold temperature is 50 ℃, and the injection molded product is the cushion inner core blank.

3. The cushion finished product forming process comprises the following steps:

(1) the inner layer is directly coated with the inner core blank by non-woven fabric, and the function is to protect the inner core; the raw inner core blank coated with the non-woven fabric is directly put into the outer sleeve, and the seal is ironed and sealed by adopting a hot melt adhesive tape, so that the obtained cushion finished product is an integral body. The special PA hot melt adhesive is high temperature resistant, good in flexibility and durable.

The middle layer fabric is omitted, the outer sleeve coating method is directly adopted, the cushion does not need to be disassembled in use, the whole cushion is washed by hands in the washing process, and the cushion is spread and dried for reuse. This saves costs, but the use function is not affected at all.

(2) The outer sleeve is sewn by adopting multilayer composite polyester fabric, the fabric is cut according to the outline size of the manufactured inner core, the inner core is arranged in the outer sleeve, and the outer sleeve is sewn and packaged to obtain a complete finished product. The coat of the multi-layer composite polyester terylene is scratch-resistant, wear-resistant, dirty-resistant, easy to clean and beautiful in color, and has good air permeability, comfortable hand feeling and comfortable feeling when sitting on the buttocks due to the multi-layer composite.

Cushion appearance and structure modeling design

The modeling design is designed aiming at the inner core blank at first and is also the modeling design of the cushion finished product at the same time.

1. Design of triangular section

(1) And (5) constructing a triangular area curve in a-' shaped frame, and drawing a sketch as shown in FIG. 47.

The parameters here include Hp 105.0mm, Ha 83.8mm, Hb 15.0mm, Lob 82.0mm, Lox 250.0mm, Ra 8.0mm, Rab 200.0mm, and β 85 °.

(2) The triangular curve is stretched out of the triangular solid by a stretching tool as shown in fig. 48. The parameters are La 260mm, Lob 250mm and W360 mm.

2. Design of the anti-skid hill 11 part:

(1) as shown in fig. 49, the basic curve of the anti-skid dune 11 is made, S, T, V, U four points are determined on the upper surface of the rectangular solid, and an artistic spline curve is naturally made through S, V, U three points, wherein S, T two points are also located on the plane of the wave-like "-" triangle 10 frame at the same time, and V, U two points are symmetrical about the line segment ST. The parameters here take the values Lst 60mm, Wut 40mm and Wtv 40 mm.

(2) The basis curve was stretched to obtain a non-skid cumulus block, as shown in fig. 50, and the parameters Hf and Hb were empirically 17.5mm and 15.0mm, respectively.

(3) As shown in fig. 51 to 52, the draft tilt was performed on both faces K, Q of the skid proof cumulus block, and as a result of experience, the tilt angle parameter was set to α ° 10 ° and γ 40 °.

(4) As shown in fig. 53, the edge rounding tool is used to perform curved surface arc transition on the anti-skid dune basic block to obtain the anti-skid dune, and after the curved surface treatment is completed, the anti-skid dune vertex C is naturally formed. Empirically, the parameters of the radius of the edge rounding here are R1-40.0 mm, R2-300.0 mm and R3-20.0 mm.

3. Design of the lowest part of the curved hip surface 3:

as shown in fig. 54, the point B at the lowest point of the curved surface 3 of the hip is rounded to obtain a circular arc curved surface, and the point B is shifted forward slightly. Empirically, the hip curve edge rounding radius parameter here is 70.0 mm.

4. Design of prototype cushion

(1) Drawing cutting auxiliary line

The design of this example is a rectangular cushion, and needs to make closed rectangular auxiliary lines on the bottom lower surface of the cushion, the auxiliary lines must be included in the triangle and the main body of the hump, and keep the integrity of the upper and lower symmetry, so as to ensure that the mechanical function of the cushion is not weakened, as shown in fig. 55-56, the parameters are that L is 250.0mm, W is 220.0mm, and R is 50.0 mm.

(2) As shown in fig. 57, the auxiliary thread is drawn and molded into a sheet (fig. 57-a), a preliminary desired shape is cut (here, a rectangular shape) to obtain a cushion prototype (fig. 57-b), and then the edge portion is rounded with a radius R of 7mm to obtain a prototype cushion (fig. 57-c). The cushion has all elements of a functional main body and an appearance outline, but the size, the width and the length are obviously not completely suitable for the sitting posture of a human body, so final adjustment is needed according to actual use requirements.

5. Finally, zoom adjustment is carried out

As shown in fig. 58, the seat cushion is enlarged by 378mm in the Y-axis direction and by 336mm in the X-axis direction, and is held in the Z-axis direction by a pantograph tool, thereby achieving a completely practical office seat cushion 8.

As shown in fig. 59-60, the center section of the office cushion finished product 8 is taken to be the "-" type curved surface frame structure, and the finally obtained relevant parameters in this example are Ha 83.8mm, Hb 15.0mm, Hc 26.6mm, β 83.3 mm, Ha-b 68.8mm, Hc-b 11.6mm, LOb 142.5mm, and LOX 336 mm.

6. Finished product display

As shown in fig. 61-67, the office chair cushion finished product 8 (or 1) designed by the embodiment is displayed from different angles.

The 2 parts in triangular space both prevent the health to lean back, also protect the caudal vertebra simultaneously, when the caudal vertebra part received the obedience protection of effective dynamics, people's back can stretch out straight naturally, and this is human physiology natural reaction, and the back is straight and straight has reduced bow waist humpback, has also significantly reduced lumbar vertebrae lever effect, reduces the backbone pressure, and the nature is favorable to physical and mental health, consequently protects that good caudal vertebra has direct benefit to healthy.

The design of the anti-skid dune 4 is intentionally reduced, Hc is 26.6mm, so that more space for arranging thighs can be provided, the thighs can be conveniently bent and stretched to move, the body function of a user is stabilized, the lasting comfort level is greatly improved, the body shape is shaped, the spinal pressure is relieved, the body fatigue is relieved, and the burden of waist soreness, back pain and hip pain is eliminated.

The curved surface along the arc trend of the buttocks is designed between the triangular area 2 and the anti-slip dune 4, so that the gravity center of a human body falls at the lowest part of the curved surface, the gravity is dispersedly transmitted to the arc surfaces all around, the stress of the buttocks is even and very small, the buttocks can be kept comfortable even if the human body sits for a long time, and the feeling of tired or pain of the buttocks due to excessive local stress can be avoided.

The appearance design of the office cushion 8 (or 1) is rectangular, the utilization area is large, and the office cushion is wider than the student cushion 9, so that the student cushion is comfortable and loose when sitting up, and the physical fatigue can be effectively relieved.

Example four:

an interest fan cushion for fishing fans is designed.

The cushion is also suitable for leisure cushions on household floors, bay windows and balconies, and is suitable for workshop assembly line workers, sitting meditation cushions, outdoor activities and the like. These hobbyists sit for a long time and work or leisure, and the sedentary seat has brought serious health hidden danger, and traditional ordinary cushion far can not satisfy the use needs.

The design steps are as follows:

design points of

Hobbyists are also typically sedentary and are often unaware that sedentary causes injury due to interest. The users often sit on fishing boxes, low stools, the ground and the like, mainly adopt a low-posture sitting posture, the buttocks land and the root of the thigh is suspended, the actual use area of the cushion is small, and the stress part is more concentrated on the ischium part of the buttocks, so that the cushion is designed to be higher in a dune Hc-proof way; meanwhile, in order to evenly disperse acting force, the cushion needs to be well wrapped on the buttocks, and the curved surface part of the buttocks of the cushion is not too loose, so that the values of Lox and Lob are not suitable to be large. The use occasions of the hobbyists are complicated, grasslands, steps, stones, stakes and the like are possible, and therefore, the cushion cannot be too large to be used as a good example. And because the use occasion is complicated, the corner trip factor must be reduced in the design, the cushion is convenient to place anywhere, and the contour of the cushion needs to be designed into a circular shape.

Comprehensive judgment shows that most of the appeal of the seat cushion of the interest enthusiasts is coincident with that of the student seat cushion, so that the student seat cushion can be transformed, a design drawing before the seat cushion is cut into a cushion prototype in the student seat cushion design is selected as a basis, the minimum curved surfaces of the triangular area, the anti-skid dune and the hip part are designed, and a cutting auxiliary line needs to be drawn (as shown in figures 33-34). Keeping the shape of the 'V' curve frame and parameters of the student cushion unchanged, cutting the student cushion into a circle, and keeping the sufficient area.

Cushion forming process

See "example three: designing a cushion for office long-time sitting staff, and adopting the same, which is not described herein.

Cushion appearance and structure modeling design

1. Design of prototype cushion

And (3) introducing and taking a design drawing (shown in figures 33-34) of the student seat cushion 9, and directly entering the design link of the original seat cushion, except that the cutting auxiliary lines need to be drawn again.

(1) Drawing an auxiliary line for cutting;

as shown in fig. 68-69, the design of the round cushion is that a closed round auxiliary line is firstly made on the lower surface of the bottom of the cushion, the auxiliary line must include the triangular area 2 and the main body part of the anti-skid hump 4 to ensure that the mechanical function of the cushion is not weakened, and the diameter of the round auxiliary line in the design is 281.5mm through experience.

(2) As shown in fig. 70, the auxiliary thread is drawn and molded into a sheet (fig. 70-a), a preliminary desired shape is cut (here, a circle is cut) to obtain a cushion prototype (fig. 70-b), and then the edge portion is rounded (R8 mm) to obtain a prototype cushion (fig. 70-c), which already has all the elements of the functional body and the appearance contour.

2. Finally, zoom adjustment is carried out

As shown in fig. 71, in order to achieve full practicability, a pantograph tool is required, since the seat cushion is circular, the enlarged diameter width in the Y-axis direction is consistent with that in the X-axis direction, and is equal to 300mm, and the diameter width in the Z-axis direction is kept unchanged, the seat cushion used by the fishing enthusiasts with full practicability is finally obtained.

As shown in fig. 72-73, the central section of the finished seat 8 of the hobbyist is taken, that is, the "to" type curved surface frame structure, and in this example, the finally obtained relevant parameters are Ha 83.7mm, Hb 15.4mm, Hc 47.8mm, β 84.6 mm, Ha-b 68.3mm, Hc-b 32.4mm, LOb 108.6mm, and LOX 300 mm.

Fourthly, displaying finished products

And (5) finally obtaining the finished product, as shown in figures 74-80.

Similarly, 2 parts of the triangular area prevent the body from bending backwards, simultaneously protect the caudal vertebra, when the caudal vertebra part is protected by effective force, the waist and back of a person can naturally extend and straighten by physiological natural reaction, the bow and the kyphosis are reduced, the lumbar vertebra lever effect and the spinal pressure are greatly reduced, the body and mind health is naturally facilitated, and therefore the caudal vertebra is protected, and the body health is directly benefited.

The design of the anti-skid dune 4 is purposely improved to improve Hc to 47.8mm, besides the function of stabilizing the body, the interesting fan often sits on a fishing box, a short stool, the ground and the like in a low-posture sitting posture, the stress part is more concentrated on the hip part, and the improvement of the anti-skid dune 11 is beneficial to ensuring that the cushion is in line with the hip part and the pressure is evenly dispersed;

design into the curved surface along the buttock pitch arc trend between trigone 2 and anti-skidding dun 4, make human focus fall on this curved surface lower, gravity from this to cambered surface dispersion transmission all around, the buttock atress is even and very little, even long-time sitting also can keep comfortable.

The circular outline of the cushion reduces the ridge factors, is convenient to place anywhere, and can cover the ischial areas of the buttocks.

Claims

1. The utility model provides a protection coccyx corrects position of sitting and eliminates fatigue fast and promote healthy cushion, includes cushion body (8), its characterized in that: the cushion body (8) consists of a cushion inner core blank (1), a cushion outer sleeve (5), a cushion middle layer (6) and a cushion inner layer (7); cushion inner core is former embryo (1) and cushion triangle-shaped district (2) integrated into one piece, and cushion inner core is former embryo (1) and cushion antiskid dune (4) integrated into one piece, and cushion antiskid dune (4) and cushion triangle-shaped district (2) between form cushion buttock curved surface (3) simultaneously, and the parcel of cushion inner core is former embryo (1) outside has cushion nexine (7), and the parcel of cushion nexine (7) outside has cushion intermediate level (6), and cushion overcoat (5) parcel is in the outside of cushion intermediate level (6) simultaneously.

2. The cushion for protecting the caudal vertebra, correcting the sitting posture, quickly eliminating fatigue and promoting health as claimed in claim 1, wherein: the vertical bearing strength of the cushion inner core blank (1) is more than 200 kg, and the hardness range of the cushion inner core blank (1) is 10-75 Shore hardness.

3. The cushion for protecting the caudal vertebra, correcting the sitting posture, quickly eliminating fatigue and promoting health as claimed in claim 1, wherein: the size of cushion overcoat (5), cushion intermediate level (6) and cushion inlayer (7) and the size looks adaptation of cushion inner core former embryo (1), and cushion intermediate level (6) and cushion inlayer (7) and cushion inner core former embryo (1) constitute complete inner core.

4. The cushion for protecting the caudal vertebra, correcting the sitting posture, quickly eliminating fatigue and promoting health as claimed in claim 1, wherein: the cushion inner layer (7) is a wave-shaped device made of non-woven fabric, the cushion middle layer (6) is a wave-shaped device made of pure cotton cloth, and the cushion outer sleeve (5) is a wave-shaped device made of polyester cloth.