Seat cushion conforming to ergonomics

Abstract

The utility model discloses a seat cushion conforming to ergonomics. The seat cushion comprises a main body part and an auxiliary bearing body, the main body part is divided into a pressure relief area, a bearing area and a load-bearing area from front to back, and grooves of different specifications are respectively formed to realize differentiated support; at least one first groove is formed in the pressure relief area, deformation capacity is enhanced, soft pressure relief is achieved, and thighs are prevented from being pressed; at least one second groove is formed in the bearing area, so that comfort and supporting performance are balanced; the total volume of the first groove is greater than that of the second groove; an auxiliary bearing body is arranged in a third groove of the bearing area, has the highest hardness and stably supports the main weight of a human body; the grooves are formed in the lower surface of the main body part, and the hardness of the three areas is gradually increased from soft to hard according to the difference between the size and the filler; when a user sits, the pressure relief area greatly deforms to release pressure, the bearing area properly supports, and the bearing area provides rigid support, so that the pressure is accurately dispersed; the seat cushion is designed based on ergonomics, and discomfort caused by long-time sitting is effectively relieved by optimizing the supporting performance of each area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of furniture, in particular to a seat cushion in line with ergonomics. BACKGROUND

[0002] In the field of seat cushion manufacturing, the importance of ergonomic design is increasingly prominent. Traditional seat cushions mostly use single material or simple structure, which is difficult to meet the differentiated needs of different parts of the human body for support and comfort. The existing seat cushions often lack targeted design, leading to discomfort for users after prolonged sitting. For example, ordinary seat cushions do not adequately release pressure on the popliteal fossa and thigh, easily compressing blood vessels and nerves, causing numbness and swelling in the legs. Insufficient support in the ischial tuberosity area will cause additional pressure on the lumbar and spinal vertebrae, easily causing lumbar strain with long-term use. At the same time, if the ischial tuberosity area does not receive adequate support, it will increase the burden on the lumbar and spinal vertebrae, easily causing lumbar diseases with long-term use. Excessively hard seat cushion surfaces will also cause compression of the muscles and fat around the ischial tuberosity, resulting in discomfort.

[0003] In addition, some seat cushions with grooves or hollows have a rough design and do not take into account the physiological structure differences of different parts of the human body, resulting in the same overall sitting feeling and difficulty in balancing support and comfort. Single material and structure design make it difficult for the seat cushion to simultaneously meet the dual needs of different parts for "soft pressure release" and "stable support". Therefore, there is an urgent need for a seat cushion that conforms to ergonomics. SUMMARY

[0004] To solve the above technical problems, the utility model provides a seat cushion in line with ergonomics, which includes a main body part and an auxiliary load-bearing body. The main body part is divided into a pressure release area, a support area, and a load-bearing area from front to back, with different specifications of grooves arranged to achieve differentiated support. The pressure release area is provided with at least one first groove to enhance the deformation capacity, release pressure softly, and avoid compressing the thighs. The support area is arranged with at least one second groove to balance comfort and support. The total volume of the first groove is greater than that of the second groove. The third groove in the load-bearing area is embedded with an auxiliary load-bearing body, which has the highest hardness and provides stable support for the main weight of the human body. The grooves are all arranged on the lower surface of the main body part, and the hardness of the three areas increases from soft to hard through the difference in size and filler. When the user sits down, the pressure release area deforms significantly to release pressure, the support area provides moderate support, and the load-bearing area provides rigid support, achieving precise pressure dispersion. This seat cushion is designed based on ergonomics, optimizes the support performance of each area, effectively alleviates discomfort from prolonged sitting, and provides users with a more comfortable and healthy sitting experience.

[0005] The technical solution of the utility model is implemented as follows:

[0006] An ergonomic cushion comprises a main body and an auxiliary load-bearing body, the main body comprises a pressure relief zone, a supporting zone and a load-bearing zone arranged in sequence from front to back; the pressure relief zone is provided with at least one first groove, the supporting zone is provided with at least one second groove, the first groove and the second groove are configured such that the total volume of the first groove is greater than the total volume of the second groove; the load-bearing zone is provided with a third groove, and the third groove is provided with an auxiliary load-bearing body.

[0007] The first groove, the third groove and the plurality of second grooves are spaced apart and independent of each other.

[0008] The grooves are arranged from bottom to top on the lower surface of the main body; the size of a single first groove is greater than that of a single second groove, so that the deformation ability of the pressure relief zone is stronger, and the feeling is softer, and the supporting zone is slightly worse; the first and second grooves are empty and have no filling objects, while the third groove is filled with an auxiliary load-bearing body, which is harder and has better support; when the user sits down, the main body is deformed under pressure, among which the pressure relief zone deforms greatly due to the presence of the first groove and can release most of the pressure, so that the cushion gives the human body less pressure, the supporting zone deforms less due to the size of the second groove, and the supporting zone is better than the pressure relief zone, and the third groove provided with the auxiliary load-bearing body makes the deformation ability of the load-bearing zone the worst, the deformation is the smallest but the support to the human body is the best.

[0009] According to the different structural settings of the three zones of the main body, the three zones have different hardness, and the hardness is sequentially sorted from small to large as the pressure relief zone, the supporting zone and the load-bearing zone, that is, the pressure relief zone is the softest, the supporting comfort is the highest, and it is not easy to press the thighs and cause adverse feelings; the load-bearing zone has the largest hardness and the strongest support, which is used to support the main weight of the human body when sitting; the supporting zone is between the two, that is, it provides certain support and retains higher comfort; thus different pressures are given to corresponding parts of the human body, the dispersion of pressure is realized, appropriate comfort support is provided for each part, and ergonomics is met.

[0010] As a preferred, the first groove is in the shape of an oval with a longer left-right direction and a shorter front-back direction.

[0011] As a preferred, the first groove has two, the two first grooves are arranged in the left-right direction, and a fourth groove is further arranged between the two first grooves. The fourth groove is arranged corresponding to the protrusion in the middle of the main body, and the thickness of the protrusion is thinned from bottom to top due to the presence of the fourth groove, thereby increasing the softness of the pressure relief zone.

[0012] As a preferred, the supporting zone is provided with a plurality of the second grooves, and the plurality of second grooves are arranged in the left-right direction; the shape of the second groove is hemispherical. Thus, after thinning, more main body is left, and in addition, the spherical shape can achieve the effect of arch-shaped reinforcement support, so that the hardness and support of the supporting zone are greater than those of the pressure relief zone.

[0013] As a preferred, the size of the third groove is larger than the size of the first groove and the second groove, and the third groove is rectangular in cross section.

[0014] As a preferred, the left and right ends of the main body are upwardly curved, the middle part is downwardly curved, and the middle part of the pressure relief area is upwardly raised; the upper surface of the main body forms a seat surface which is a curved surface corresponding to the shape of the main body. The left and right sides of the raised part are pressure relief parts, and the thigh is placed in the recess between the raised part and the two ends, which is ergonomic and improves comfort; the upward curvature of the left and right ends of the main body can provide a wrapping feeling for the user's hips and legs, improving the comfort of sitting.

[0015] As a preferred, the main body is divided into a central part and an outer ring part outside the central part from inside to outside, and the left and right ends of the outer ring part are upwardly curved; the first groove, the second groove and the third groove are all located in the central part; a wrapping deformation groove is provided on the outer ring part on the left and right sides of the supporting area, and the second groove is between the two wrapping deformation grooves. Because the supporting area has a higher supporting hardness than the pressure relief area, the deformation ability of the supporting area is weaker, and the wrapping feeling provided is poorer, so the wrapping deformation groove can increase the deformation ability of the supporting area, and after the user sits down, the outer ring part on both sides of the supporting area can also deform inwardly, thereby providing a wrapping feeling and increasing the comfort of sitting.

[0016] As a preferred, the rear end of the outer ring part is provided with a plurality of spaced apart material reducing grooves in the left and right directions. This saves material and reduces cost.

[0017] As a preferred, the hardness and elasticity of the auxiliary load-bearing body are greater than those of the main body.

[0018] As a preferred, the thickness of the auxiliary load-bearing body is 30-40mm. The overall thickness of the main body of the load-bearing area is 70mm, the depth of the thinned part of the load-bearing area is 40mm, the thickness of the main body of the thinned part of the load-bearing area is 30mm, and the size of the gap between the auxiliary load-bearing body and the main body will affect the softness of the load-bearing area, the larger the gap, the softer the load-bearing area. In this embodiment, a 40mm thick auxiliary load-bearing body is used.

[0019] As a preferred, the main body is made of shaped cotton, and the auxiliary load-bearing body is made of raw cotton. Shaped cotton is softer and has lower hardness, and the user's legs and hips are relatively soft. If the hardness is too high when the shaped cotton is in contact with the legs and hips, the legs and hips will be subjected to greater pressure, causing discomfort and even numbness after prolonged sitting. Therefore, the use of shaped cotton for contact with the legs and hips provides a softer and more comfortable feeling for the user. The load-bearing area plays the most important supporting role, and the auxiliary load-bearing body made of raw cotton which is harder and more elastic can provide sufficient support for the hips.

[0020] As a preferred, the thickness of the main body above the third groove is less than the thickness of the main body above the first groove and the second groove. This highlights the role of the auxiliary load-bearing body in supporting.

[0021] As preferred, in the front-rear direction, the length proportion of the pressure relief area is 25%-28% of the total length of the cushion, the length proportion of the supporting area is 15%-18%, and the length proportion of the weight bearing area is 40%-42%.

[0022] The design starting point, concept and beneficial effects of the utility model adopting the technical scheme are:

[0023] The grooves are all arranged on the lower surface of the main body part from bottom to top; the size of the single first groove is larger than that of the single second groove, so that the deformation ability of the pressure relief area is stronger, and the feeling is softer, and the supporting area is slightly worse; the first and second grooves are empty and have no filling objects, while the third groove is filled with the auxiliary weight bearing objects, which are harder and have better supportability; when the user sits, the main body part is deformed under pressure, the pressure relief area is deformed greatly due to the first groove and can release most of the pressure, so that the pressure feedback to the human body from the cushion is smaller, the supporting area is deformed less due to the size of the second groove, and the supportability is better than that of the pressure relief area, and the third groove provided with the auxiliary weight bearing objects has the worst deformation ability and the smallest deformation, but has the best supportability to the human body.

[0024] According to the different structural arrangement of the three areas of the main body part, the three areas have different hardness, and the hardness is sequentially sorted from small to large as the pressure relief area, the supporting area and the weight bearing area, that is, the pressure relief area is the softest, the supporting comfort is the highest, and the thighs are not easily pressed to cause adverse feelings; the weight bearing area has the largest hardness and the strongest supportability, and is used to support the main weight of the human body when sitting; the supporting area is between the two, that is, it provides certain support and retains higher comfort; thus different pressures are given to the corresponding human body parts, the dispersion of the pressure is realized, suitable comfort support is provided for each part, and the ergonomics is met. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic view of the three-dimensional structure of the cushion in the embodiment of the utility model Figure 1 ;

[0026] Figure 2 It is a schematic view of the three-dimensional structure of the cushion in the embodiment of the utility model Figure 2 ;

[0027] Figure 3 It is a front view of the cushion in the embodiment of the utility model;

[0028] Figure 4 It is a schematic view of the three-dimensional structure of the auxiliary weight bearing objects arranged in the main body part in the embodiment of the utility model;

[0029] Figure 5 It is a schematic view of the three-dimensional structure of the main body part in the embodiment of the utility model;

[0030] Figure 6 A schematic view of the partition of the pressure releasing area, the supporting area and the load bearing area on the cushion in the embodiment of the utility model;

[0031] Figure 7 A schematic view of the center part and the outer ring part on the main part in the embodiment of the utility model;

[0032] Figure 8 A sectional view of the main part in the pressure releasing area in the embodiment of the utility model;

[0033] Figure 9 A sectional view of the main part in the supporting area in the embodiment of the utility model;

[0034] Figure 10 A sectional view of the main part in the load bearing area in the embodiment of the utility model;

[0035] Figure 11 A sectional view of the cushion in the pressure releasing area in the embodiment of the utility model;

[0036] Figure 12 A sectional view of the cushion in the supporting area in the embodiment of the utility model;

[0037] Figure 13 A sectional view of the cushion in the load bearing area in the embodiment of the utility model;

[0038] Figure 14 A sectional view of the cushion in the material reducing groove in the embodiment of the utility model.

[0039] The reference signs are as follows: main part 1, pressure releasing area 11, pressure releasing part 111, first groove 112, fourth groove 113, supporting area 12, second groove 121, wrapping deformation groove 122, load bearing area 13, third groove 131, center part 101, outer ring part 102, side cotton 103, auxiliary load bearing body 2, support plate 3, material reducing groove 4, first elastic support strip 5, second elastic support strip 6. DETAILED DESCRIPTION

[0040] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from those described herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0042] In the description of the utility model, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0043] The specific implementation manner of the utility model is as follows:

[0044] As Figures 1-6 shown, the utility model provides a seat cushion conforming to ergonomics, the seat cushion solves the problems existing in the prior art seat cushion through a method for improving the comfort of the seat cushion, and the method is as follows:

[0045] According to the pressure distribution when a human body sits, the seat cushion is partitioned along the front-rear direction, and is sequentially divided from front to rear into a pressure relief area 11 corresponding to the popliteal fossa and the thigh part and having the minimum pressure, a supporting area 12 corresponding to the thigh root and the hip muscle and having the medium pressure, and a bearing area 13 corresponding to the ischial tuberosity area and having the maximum pressure; the main body part 1 of the seat cushion is subjected to thickness thinning treatment according to the corresponding human body part and the pressure size in the pressure relief area 11, the supporting area 12 and the bearing area 13;

[0046] The pressure relief area 11 has two pressure relief parts 111 corresponding to the two legs and spaced apart left and right, and at least the thickness of the two pressure relief parts 111 is thinned when the pressure relief area 11 is subjected to the thickness thinning treatment, and the hardness of the pressure relief area 11 is relatively lowest among the three areas, so as to release the pressure of the popliteal fossa and the thigh part on the pressure relief area 11;

[0047] The thickness of a plurality of positions spaced apart on the supporting area 12 is thinned along the left-right direction, so that the hardness of the supporting area 12 is greater than that of the pressure relief area 11, so as to support the thigh root and the hip muscle;

[0048] After the thickness thinning treatment on the bearing area 13, an auxiliary bearing body 2 is filled, the hardness and elasticity of the auxiliary bearing body 2 are higher than those of the main body part 1, and the thickness of the main body part 1 after being thinned in the bearing area 13 is less than the thickness of the main body part 1 after being thinned in the supporting area 12, so that the hardness of the bearing area 13 is relatively highest among the three areas, so as to support the ischial tuberosity area and the main weight of the human body.

[0049] The different thickness thinning treatments make the structures of the areas different, when a human body sits, the pressure relief area 11, the supporting area 12 and the bearing area 13 produce different deformations according to the different thickness thinning treatments, and then different pressures are given to the corresponding parts, the dispersion of the pressure is realized, appropriate comfortable support is provided for each part, and ergonomics is met.

[0050] Leg numbness after sitting for a long time is often caused by the pressure on the popliteal fossa and the thigh part being too large, and the pressure cannot be released, causing poor blood circulation; in this scheme, the pressure release area 11 is the softest, which can provide comfortable support to the popliteal fossa and the thigh part, and release the pressure on the popliteal fossa and the thigh part, greatly relieving the compression, thereby avoiding poor blood circulation.

[0051] The weight of the thigh root and the muscles of the buttocks is heavier than the popliteal fossa and the thigh part, and the support is not enough, so the cushion will collapse obviously, so the supporting area 12 needs to provide more support than the pressure release area 11, and the hardness requirement will be larger;

[0052] The muscle fat of the thigh root and the buttocks is more, although it is not as easy to be uncomfortable due to pressure as the popliteal fossa and the thigh part, but if the support of the supporting area 12 is too strong, the pressure on this part will also be too large, in this method, the supporting area 12 is thinned at multiple places, but each thinning is relatively small, and smaller than the size of the single thinning of the pressure release area 11, and there are more intervals between each thinning, so there are still more main bodies 1 after thinning, so that the hardness and support of the supporting area 12 are greater than those of the pressure release area 11, while the hardness is weakened to the size that can provide the required comfort, achieving the balance between comfort and support.

[0053] The ischial tuberosity area is the last part of the buttocks in contact with the seat surface, and it upwardly receives the lumbar spine, which is the most important load-bearing part of the human body when sitting, and if the support is weak, it will cause health problems to the lumbar spine, so the stress on the load-bearing area 13 is the largest, and the load-bearing area 13 must provide sufficient support, and the hardness is relatively the hardest;

[0054] There are also muscles and fat around the ischial tuberosity area, but compared with other parts of the buttocks, the ischial tuberosity has a more sharp and obvious downward convexity, and if the hardness of the contact surface is too hard, a high-pressure area will be formed, and the ischial tuberosity and the high-pressure area of the cushion will squeeze the muscles and fat from both sides, which will also cause discomfort; the composite structure of the load-bearing area 13 and the auxiliary load-bearing body 2 can better balance the support and comfort, that is, in the load-bearing area 13, the main body 1 first gives a comfortable contact, and then the auxiliary load-bearing body 2 gives sufficient support.

[0055] From the maximum support point to the weakest support point, the pressure given by the cushion is dispersed, the maximum support point is the load-bearing area 13, the pressure is relatively large, and the support is the best, the weakest support point is the pressure release area 11, the pressure is relatively small, and it is the softest, so it will not produce a sense of compression, although the support is weak, but there are the supporting area 12 and the load-bearing area 13 to support it.

[0056] The comfort of the cushion as a whole needs to be considered from multiple aspects. Since each part supported by the cushion has different characteristics, the demand is also different. The cushion cannot achieve real overall sitting comfort by blindly pursuing softer or more elastic. The ergonomic design makes each area reach the most suitable softness, so that the sitting experience is more comfortable.

[0057] Further, the thickness reduction process is performed when or after the main body 1 of the cushion is formed, that is, the thickness reduction process can be achieved by one-piece molding, such as injection molding, or the main body 1 can be hollowed out after injection molding. Compared, the direct one-piece molding method is more convenient and simple, and saves materials. The main body 1 is formed from production material, the reduction amount of the pressure relief area 11 is greater than the retention amount of the production material, and the reduction amount of the supporting area 12 is less than the retention amount of the production material. The greater the reduction amount, the softer it is, so as to form different hardness in the area. The production material is shaped cotton, and the auxiliary load-bearing body 2 is made of raw cotton. The shaped cotton is softer and has lower hardness. The user's legs and hips are relatively soft. If the hardness is too high when the user is supported, the user's legs and hips will be under greater pressure, causing discomfort or even numbness after sitting for a long time. Therefore, the shaped cotton is used to fit the user's legs and hips, and the user feels more comfortable.

[0058] In addition, the densities of the production materials in the three areas of the pressure relief area 11, the supporting area 12, and the load-bearing area 13 can be different, and the density of the production material in the three areas gradually increases from front to back. The hardness of the production material itself is not the same, and the different structures of the areas meet the different softness requirements of the areas, achieving the effect of pressure dispersion.

[0059] The thickness reduction process is performed from the lower surface of the main body 1 to the upper surface. The upper surface of the main body 1 is complete, the lower surface is generally more regular and flat than the upper surface, and the thickness reduction process is more convenient. After the thickness reduction process and filling the auxiliary load-bearing body 2, a support plate 3 is arranged below the cushion. The pressure relief area 11 and the supporting area 12 form a cavity for the deformation of the main body 1 between the main body 1 and the support plate 3 after the thickness reduction process. The support plate 3 also supports the auxiliary load-bearing body 2 from the bottom up. The main body 1 extends downward by a circle of side cotton 103 arranged along the edge contour of the main body 1. The side cotton 103 surrounds the support plate 3. The deformation of the main body 1 can achieve a soft effect. The support plate 3 can prevent the main body 1 from deforming too much and can keep the auxiliary load-bearing body 2 in the load-bearing area 13.

[0060] The thickness of the main body part 1 at the thinning part of the load-bearing area 13 is smaller than the thickness of the main body part 1 at the thinning part of the pressure relief area 11 and the thickness of the main body part 1 at the thinning part of the supporting area 12; in the load-bearing area 13, the proportion of the main body part 1 relative to the auxiliary load-bearing body 2 is smaller; the role of the auxiliary load-bearing body 2 for support is highlighted; in the left-right direction, the thickness of the main body part 1 at the thinning part of the pressure relief area 11 remains unchanged; in the left-right direction, the thickness of the main body part 1 at the thinning part of the load-bearing area 13 remains unchanged.

[0061] The cushion formed by the above method is as follows:

[0062] As described above, the cushion comprises a main body part 1, an auxiliary load-bearing body 2 and a support plate 3, the main body part 1 comprises a pressure relief area 11, a supporting area 12 and a load-bearing area 13 arranged in sequence from front to back; the pressure relief area 11 is provided with two first grooves 112, the two first grooves 112 are arranged at intervals along the left-right direction and located at the pressure relief part 111; the supporting area 12 is provided with a plurality of second grooves 121, the plurality of second grooves 121 are arranged at intervals along the left-right direction; the size of a single first groove 112 is larger than the size of a single second groove 121; the load-bearing area 13 is provided with a third groove 131, the auxiliary load-bearing body 2 is arranged in the third groove 131; the grooves are arranged on the lower surface of the main body part 1 from bottom to top; the support plate 3 is arranged below the main body part 1.

[0063] As shown in Figure 2 , 3 , 8-10, the shape of the main body part 1 is that the left and right ends of the main body part 1 are upturned, the middle part is bent downward, and in the middle part of the pressure relief area 11, the main body part 1 is upraised; the upper surface of the main body part 1 forms a seat surface, which is a curved surface corresponding to the shape of the main body part 1; the left and right sides of the upraised part are the pressure relief parts 111, which provide a recess for the thighs to rest between the upraised part and the upturned ends, conforming to ergonomics and improving comfort; the upturned left and right ends of the main body part 1 can provide a wrapping feeling for the hips and legs of the user, improving the comfort of sitting.

[0064] As shown in Figure 7 , 14 , the main body part 1 is divided into a central part 101 and an outer ring part 102 outside the central part 101 from inside to outside, and the left and right ends of the outer ring part 102 are upturned; the thinning parts of the pressure relief area 11, the supporting area 12 and the load-bearing area 13 are located in the central part 101; the outer ring part 102 on the left and right sides of the supporting area 12 is provided with a wrapping deformation groove 122; due to the supporting hardness of the supporting area 12 being greater than that of the pressure relief area 11, the deformation ability of the supporting area 12 is weaker, and the wrapping feeling provided is poorer; the wrapping deformation groove 122 can increase the deformation ability of the supporting area 12, and after the user sits down, the outer ring part 102 on the left and right sides of the supporting area 12 can also deform inward, thereby providing a wrapping feeling and increasing the comfort of sitting; the rear end of the outer ring part 102 is provided with a plurality of spaced-apart material-reducing grooves 4 along the left-right direction, so as to save material and reduce cost.

[0065] In the front-rear direction, the length ratio of the pressure relief area 11 is 25%-28% of the total length of the cushion, the length ratio of the supporting area 12 is 15%-18%, and the length ratio of the load-bearing area 13 is 40%-42%.

[0066] Further, as shown in Figures 4-8 , 11, the first groove 112 is in the shape of an oval with a longer left-right dimension and a shorter front-rear dimension; a fourth groove 113 is further arranged between the two first grooves 112, and the cross section of the fourth groove 113 is in the shape of a rectangle; the fourth groove 113 is arranged corresponding to the protrusion in the middle of the main body 1, and the presence of the fourth groove 113 thins the thickness of the protrusion from bottom to top, increasing the softness of the pressure relief area 11.

[0067] As shown in Figures 4-7 , 9, 12, a plurality of second grooves 121 are arranged in the left-right direction at intervals, and the shape of the second groove 121 is hemispherical, so that more of the main body 1 is left after thinning, and the spherical shape can achieve the effect of arch-shaped reinforcement support, realizing that the hardness and support of the supporting area 12 are greater than those of the pressure relief area 11; the size of a single second groove 121 is smaller than the size of a single first groove 112, so that more of the main body 1 is left at intervals in the supporting area 12 to increase the support.

[0068] As shown in Figures 4-7 , 10, 13, the overall thickness of the load-bearing area 13 is thinned, and the thinned load-bearing area 13 is formed with a single third groove 131, and the cross section of the third groove 131 is in the shape of a rectangle; the auxiliary load-bearing body 2 is in the shape of a rectangular block or a plate, and the thickness is 30-40 mm; in this embodiment, the overall thickness of the main body 1 of the load-bearing area 13 is 70 mm, the depth of the thinned part of the load-bearing area 13 is 40 mm, the thickness of the main body 1 of the thinned part of the load-bearing area 13 is 30 mm, and the size of the gap between the auxiliary load-bearing body 2 and the main body 1 will affect the softness of the load-bearing area 13, and the larger the gap, the softer the load-bearing area 13, and in this embodiment, the auxiliary load-bearing body 2 with a thickness of 40 mm is used.

[0069] In summary, the size of the groove, the amount of the main body 1 left on the side of the groove (such as the main body 1 left on the side of the second groove 121), the thickness of the main body 1 at the groove (i.e., the amount of the main body 1 left above the groove), and whether the groove is filled will affect the hardness of each area of the cushion, and through the above-mentioned solutions, the effect of gradually decreasing and dispersing the pressure from the load-bearing area 13 to the pressure relief area 11 is effectively achieved, balancing the comfort and support of the overall cushion.

[0070] In addition, as shown in Figure 7As shown, when the main body part 1 of the cushion is formed, a plurality of elastic support strips are embedded in the main body part 1 of the load-bearing area 13, and the elastic support strips have a curvature with a middle part bending upward; the elastic support strips include a plurality of first elastic support strips 5 and a plurality of second elastic support strips 6; the plurality of first elastic support strips 5 extend along the left-right direction and are arranged at intervals along the front-rear direction, the plurality of second elastic support strips 6 extend along the front-rear direction and are arranged at intervals along the left-right direction, the first elastic support strips 5 and the second elastic support strips 6 are staggered longitudinally and transversely and form a net-like support structure; further giving the load-bearing area 13 elastic support.

Claims

1. An ergonomic seat cushion, characterized by: The cushion includes a main body part and an auxiliary load-bearing body, the main body part includes, from front to back, a pressure relief zone, a supporting zone and a load-bearing zone; the pressure relief zone is provided with at least one first groove, the supporting zone is provided with at least one second groove, the first groove and the second groove are configured such that the total volume of the first groove is greater than the total volume of the second groove; the load-bearing zone is provided with a third groove, and the auxiliary load-bearing body is arranged in the third groove.

2. The ergonomic seat cushion of claim 1, wherein: The first groove is in the shape of an oval that is longer in the left-right direction and shorter in the front-back direction.

3. The ergonomic seat cushion of claim 1, wherein: The first groove has two first grooves arranged in the left-right direction, and a fourth groove is arranged between the two first grooves.

4. The ergonomic cushion of claim 1, wherein: The supporting zone is provided with a plurality of second grooves, and the plurality of second grooves are arranged in the left-right direction; the second groove is in the shape of a hemisphere.

5. The ergonomic cushion of claim 1, wherein: The size of the third groove is greater than the size of the first groove and the second groove, and the third groove is in the shape of a rectangle.

6. The ergonomic cushion of claim 1, wherein: The left and right ends of the main body part are raised, the middle part is curved downward, and the middle part of the pressure relief zone is raised upward; the upper surface of the main body part forms a seat surface, and the seat surface is a curved surface corresponding to the shape of the main body part.

7. The ergonomic cushion of claim 6, wherein: The main body part is divided into a central part and an outer ring part outside the central part from inside to outside, and the left and right ends of the outer ring part are raised; the first groove, the second groove and the third groove are all located in the central part; a wrapping deformation groove is arranged on the outer ring part on the left and right sides of the supporting zone, and the second groove is located between the two wrapping deformation grooves.

8. The ergonomic cushion of claim 7, wherein: The rear end of the outer ring part is provided with a plurality of spaced-apart material reduction grooves in the left-right direction.

9. The ergonomic cushion of claim 1, wherein: The hardness and elasticity of the auxiliary load-bearing body are greater than those of the main body part.

10. The ergonomic cushion of claim 1, wherein: The thickness of the auxiliary load-bearing body is 30-40 mm.

11. The ergonomic cushion of claim 1, wherein: The material of the main body part is shaped cotton, and the material of the auxiliary load-bearing body is virgin cotton.

12. The ergonomic cushion of claim 1, wherein: The thickness of the main body part above the third groove is less than the thickness of the main body part above the first groove and the second groove.

13. The ergonomic cushion of claim 1, wherein: In the front-back direction, the length of the pressure relief zone accounts for 25%-28% of the total length of the cushion, the length of the supporting zone accounts for 15%-18%, and the length of the load-bearing zone accounts for 40%-42%.

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