CN112674517B

CN112674517B - Seat cushion based on multi-angle supporting and adjusting structure

Info

Publication number: CN112674517B
Application number: CN202011542744.8A
Authority: CN
Inventors: 田杰; 张萍
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2018-03-15
Filing date: 2018-03-15
Publication date: 2022-04-15
Anticipated expiration: 2038-03-15
Also published as: CN108577304A; CN112674517A; CN112690599B; CN112690599A; CN108577304B

Abstract

A seat cushion based on a multi-angle supporting and adjusting structure comprises a plurality of connecting bodies (2) and a plurality of supporting rods (3) which are coated by a coating layer (1), wherein a first fixed end (2a) of each connecting body (2), which is far away from the coating layer (1), is connected with a first matching end (3a), which is close to the coating layer (1), of each supporting rod (3) in a manner of jointly forming a spherical pair; the second matching end (3b) of the supporting rod (3) far away from the coating layer (1) is in line contact and/or surface contact in a mode of sliding relative to the working surface of the cam (5), the first matching end (3a) is changed in position based on the rotation of the cam (5) around the rotation center (6) of the cam, so that the supporting rod (3) can swing or rotate around a spherical pair while doing linear motion, and the supporting rod (3) can have a working form with any inclination angle with the surface of the cam.

Description

Seat cushion based on multi-angle supporting and adjusting structure

The invention relates to a base pad for dynamically adjusting surface morphology and a student seat with the base pad, wherein the application number is 201810216231.4, the application date is 2018, 03 and 15, and the application type is the invention.

Technical Field

The invention belongs to the field of living goods and instruments, and particularly relates to a seat cushion based on a multi-angle supporting and adjusting structure.

Background

At present, the adjustment of students in the market mainly focuses on the adjustment of the large-scale sizes of sitting height, sitting depth, waist rest height and the like, or the adjustment of the surface contact temperature of a cushion and a back cushion, and the shapes of the cushion and the back cushion are fixed and unchangeable. The function of the cushion and the back cushion with changeable shapes mainly appears on the automobile seat, and aims to adapt to different driving environments.

Chinese patent publication No. CN104055344A discloses an intelligent learning seat. The invention uses the sitting posture detection device to collect data of a learner sitting in front of a table and a chair and transmits the collected data to the data processing unit, the data processing unit processes the collected data and transmits a processing result to the intelligent control device, and the intelligent control device correspondingly controls the automatic table and chair adjusting device according to the processing result of the data, thereby realizing the movement of the chair, the automatic lifting of the table top or the automatic inclination of the table top or the automatic lifting of the chair surface or the automatic inclination of the chair back. The limitation of this type of learning chair is that it only provides the overall structural dimensions of the chair, such as seat depth, seat height, etc., and cannot adjust the shape of the seat surface and back cushion. The size adjustment is provided for general students, and the adjustment aims at adapting to different body types of people and cannot adapt to different sitting posture physiological forms.

Chinese patent publication No. CN102050038A discloses a method for dynamically adjusting the body support of a vehicle seat occupant based on the current vehicle speed and stored data about the current road profile. By precalculating a road along which the vehicle is most likely to travel during driving, the respective precalculated road along which the vehicle is most likely to travel is longer than the end of the upcoming curve, and the body support adapted to the entire precalculated road along which the vehicle is most likely to travel is adjusted while passing through the curve. The invention aims to solve the problems of seat support and wrapping in the running process of a vehicle. The dynamic adjustment seat adapts to the stress condition of drivers in different driving states by dynamically adjusting the shape of the seat. The problem to be solved is the stability of the ride during the driver's re-ride rather than to reduce fatigue from sitting for a long period of time.

With the increase of age, the body of the teenager is continuously developed, and the body form is continuously changed, particularly the height and the bone form are changed. When sitting, the shape of the seat support portion is likely to cause fatigue and even skeletal development deformity if it does not fit well to the body shape of teenagers of different ages.

Therefore, the seat with the dynamically adjustable cushion and/or back cushion shape is lacking in the market, so that the seat can adapt to different body shapes caused by rapid growth of teenagers or match the body shapes of different people, and the fatigue is relieved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a base pad for dynamically adjusting the surface form and a student chair with the base pad. The bottom pad can change the surface support shape to match the shape of the body part contacted with the bottom pad, thereby providing better support effect. The student chair can actively adjust the surface shapes of the cushion and the back cushion, and achieves the effects of dynamically adjusting the sitting posture and relieving fatigue.

A base pad for dynamically adjusting surface morphology comprises a plurality of connectors and a plurality of supporting rods which are coated by coating layers. The first fixed end of the connector far away from the coating is connected with the first matching end of the support rod close to the coating in a mode of jointly forming a spherical pair. The working surface of the support body is attached to the coating layer, and the support body is fixedly connected to the second fixed end of the connecting body. The support body changes the position and the shape of the working surface of the support body in a mode of moving along with the movement of the first matching end and/or swinging around the first matching end in a plane vertical to the surface of the coating layer based on the external force applied to the working surface. The spherical pair can move under the driving of the supporting rod, and meanwhile, the supporting body can swing around the spherical pair under the condition that the spherical pair is fixed, so that the floating type dynamic adjustment of the position form of the supporting body is realized, and the form of a body part can be better matched based on the active adjustment of the supporting rod and the floating type dynamic adjustment of the supporting body under the action of external force.

According to a preferred embodiment, the second mating end of the support rod remote from the coating forms a line contact and/or a surface contact in such a way as to produce a relative sliding with the working surface of the cam. Wherein the first mating end is positionally variable based on rotation of the cam about its center of rotation. The connecting body is connected with the supporting rod in a spherical pair mode, so that the supporting rod can swing or rotate around the spherical pair while doing linear motion, the supporting rod can have a working form with any inclination angle with the surface of the cam, and more position combination forms can be formed by matching with the rotation or the swing of the supporting body around the spherical pair.

According to a preferred embodiment, several of said cams are arranged with their respective centers of rotation on the same drive shaft. The cams on the same transmission shaft are distributed in mirror symmetry by taking the middle point in the axial extension direction of the transmission shaft as a symmetry center. The straight lines defined by the first end point farthest from the rotation center and the second end point nearest to the rotation center of the two adjacent cams form an included angle with each other. The invention reduces the weight and the manufacturing cost of the base pad by arranging a plurality of cams on the same transmission shaft, and the cams on the same transmission shaft are driven by one driving motor to rotate, and meanwhile, the invention obtains the position form which extends along the axial direction of the transmission shaft and changes in an undulate way by matching with the cams with different position forms arranged on the same transmission shaft.

According to a preferred embodiment, several of the transmission shafts having different lengths are connected to and driven to rotate by a driving motor, respectively. Wherein, a plurality of transmission shafts with different lengths are distributed according to the parallel row shape form and thereby define support areas with different shapes. The axial extension directions of the drive shafts contained in the differently shaped support regions are perpendicular to each other. The support areas with different shapes are limited through a plurality of transmission shafts according to the parallel row-shaped distribution mode, the weight increase caused by covering the support body in the whole area in the base mat is avoided by the mode that the support bodies are arranged in the sub-areas of the base mat, meanwhile, the arrangement quantity of the support bodies in different support areas and the arrangement gaps among the support bodies can also be different, the structural stability of the base mat can be effectively improved by the mode that the support bodies are densely arranged in the stress concentration area, and the base mat has longer service life.

According to a preferred embodiment, the drive motors are each electrically connected to the control module. Each of the drive motors is configured to have a duration suitable for its current state based on the control module's independent control signal. The independent driving control mode of the transmission shaft enables the adjustment of the surface form of the bottom pad to be more diversified, and the form of the body part can be better matched based on different rotation angles of the transmission shaft.

According to a preferred embodiment, the base mat further comprises a pressure sensor disposed on the work surface and electrically connected to the control module.

According to a preferred embodiment, the base pad further comprises a smart wearable accessory capable of acquiring at least one of the weight, heart rate and body temperature of the seated person in real-time communication with a communication module electrically connected to the control module. The control module generates control signals of the starting time point and the continuous working time of the driving motor based on the pressure sensor and data information acquired by the intelligent wearable accessory. The starting time point of the driving motor is controlled, for example, the driving motor can be in a circularly started state, so that the effect of actively changing sitting postures or massaging to reduce fatigue is achieved, pressure data collected by the pressure sensor and various physiological data information of sitting personnel collected by the intelligent wearable equipment are matched, the fatigue state of the user can be monitored to a greater extent, and the cushion shape can be adjusted more timely.

According to a preferred embodiment, the student seat comprises a seat frame and a base and uses the above-described dynamically surface morphology-adjusting base cushions as its seat cushion and back cushion, respectively.

According to a preferred embodiment, the backrest cushion is arranged on the seat frame in such a way that its height from the ground is adjustable. The cushion is arranged on the seat framework in a mode that the relative distance between the cushion and the back cushion can be adjusted. The seat framework is connected with the base in a mode that the height of the seat framework from the ground can be adjusted.

According to a preferred embodiment, the control module calculates the duration of the same sitting posture based on the pressure data collected by the pressure sensor and analyzes the monitoring result to determine whether the sitting posture is standard. Generating control signals for a drive motor to actively adjust the surface morphology of the seat cushion and the backrest cushion based on the duration and the monitoring results.

The invention has the beneficial technical effects that:

(1) the base pad of the invention can change the surface support shape to match the shape of the body part contacted with the base pad, thereby providing better support effect. The student chair can actively adjust the surface shapes of the cushion and the back cushion, and achieves the effects of dynamically adjusting the sitting posture and relieving fatigue.

(2) The connecting body and the supporting rod are connected in a spherical pair mode, so that the supporting rod can swing or rotate around the spherical pair while doing linear motion, the supporting rod can have a working form with any inclination angle with the surface of the cam, and more position combination forms can be formed by matching the rotation or the swing of the supporting body around the spherical pair.

(3) The invention can form a state of circularly starting the driving motor by controlling the starting time point of the driving motor, thereby achieving the effect of actively changing sitting postures or reducing fatigue by massage. The pressure data of cooperation pressure sensor collection and each item physiological data information of the personnel of sitting that intelligence wearing equipment gathered can the realization to the monitoring of user of personnel's fatigue state to a greater extent for the adjustment of cushion form has more the promptness.

Drawings

FIG. 1 is a schematic cross-sectional view of a preferred subpad of the present invention;

FIG. 2 is a perspective view of a preferred structure of the cam, the supporting body, the connecting body and the supporting rod connected with each other according to the present invention;

FIG. 3 is a front view of the preferred cam, support body, connecting body and interconnecting structure of the support rods of the present invention;

FIG. 4 is a schematic view of the preferred arrangement of cams on the same drive shaft and their connection;

FIG. 5 is a schematic view of the construction of a preferred student chair of the present invention;

figure 6 is a schematic view of the support area distribution of the seat cushion of a preferred student seat of the present invention;

FIG. 7 is a schematic view of the support area distribution of the back pad of the preferred student chair of the present invention;

FIG. 8 is a schematic cross-sectional view of a preferred connector of the present invention; and

fig. 9 is a schematic diagram showing a connection relationship of electronic components according to a preferred embodiment of the present invention.

List of reference numerals

1: coating layer 2: the connecting body 3: support rod

2 a: first fixed end 2 b: second fixed end 3 a: first mating end

3 b: the second mating end 4: support body 4 a: working surface

5: the cam 6: rotation center 7: transmission shaft

5 a: first end point 5 b: second endpoint 8: driving motor

9: support area 10: the control module 11: pressure sensor

12: accessory 13 is dressed to intelligence: the seat frame 14: base seat

15: cushion 16: cushion 17: a first elastic layer

18: second elastic layer 19: first projection 20: second bump point

21: spring 22: the ball 23: first part

24: second member 25: hip ischial nodes 26: pressure node

27: first member first end 28: first member second end 29: first end of the second part

30: second-member second end 31: communication module

Detailed Description

The invention discloses a base pad for dynamically adjusting surface morphology and a student seat with the base pad.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

As shown in fig. 1 to 4, the base pad for dynamically adjusting surface morphology includes a plurality of connectors 2 and a plurality of support rods 3, which are covered by a covering layer 1. The first fixed end 2a of the connector 2 far away from the coating layer 1 is connected with the first matching end 3a of the support rod 3 close to the coating layer 1 in a manner of jointly forming a spherical pair. Wherein, the support body 4 whose working surface 4a is attached to the coating layer 1 is fixedly connected to the second fixed end 2b of the connector 2. The support body 4 changes the working form of the working surface 4a in such a manner that the support body moves with the movement of the first mating end 3a and/or swings around the first mating end 3a in a plane perpendicular to the surface of the covering layer based on an external force applied to the working surface 4a, and preferably, the working form of the working surface 4a is a different positional form in which the height of the working surface 4a from the ground surface can be changed and/or a different inclined form in which the angle between the working surface 4a and the ground surface can be changed. The spherical pair can realize the movement of the spherical pair based on the driving of the supporting rod 3. Under the condition that the position of the spherical pair is fixed, the support body 4 can swing around the spherical pair, and the floating type dynamic adjustment of the position form of the support body is realized. The shape of the body part can be better matched based on the active adjustment of the supporting rod 3 and the floating dynamic adjustment of the supporting body under the action of external force.

Preferably, the second mating end 3b of the support rod 3 remote from the cover 1 is in line contact and/or in surface contact in such a way as to produce relative sliding with the working surface of the cam 5. Wherein the first mating end 3a is positionally varied upon rotation of the cam 5 about its center of rotation 6. The connecting body is connected with the supporting rod in a spherical pair mode, so that the supporting rod can swing or rotate around the spherical pair while doing linear motion, the supporting rod can have a working form with any inclination angle with the surface of the cam, more position combination forms can be formed by matching the supporting body with the rotation or the swing of the spherical pair, and different body part forms of different users can be matched to the greatest extent.

Preferably, several cams 5 are arranged in such a way that their respective centres of rotation 6 are all located on the same transmission shaft 7. The cams on the same transmission shaft are distributed in mirror symmetry by taking the middle point in the axial extension direction of the transmission shaft as a symmetry center. Projections of straight lines defined by respective first end points 5a farthest from the rotation center 6 thereof and second end points 5b closest to the rotation center thereof, of the two adjacent cams 5 in a plane perpendicular to the axial direction of the propeller shaft intersect with each other. The plurality of cams are arranged on the same transmission shaft, the cams on the same transmission shaft are driven by one driving motor to rotate, the weight and the manufacturing cost of the base pad are reduced, and meanwhile, the position forms which extend along the axial direction of the transmission shaft and change in an undulate manner are obtained by matching the cams arranged on the same transmission shaft and have different position forms.

Preferably, several transmission shafts 7 having different lengths are connected to each other to a driving motor 8, respectively, and are driven to rotate by the driving motor 8. Wherein several drive shafts 7 of different lengths are distributed in a parallel row-like configuration and thus define support areas 9 of different shapes. The axial extension directions of the drive shafts contained in the differently shaped support areas 9 are perpendicular to each other. The support areas with different shapes are limited through the transmission shafts according to the parallel row-shaped distribution mode, and the weight increase caused by the fact that the support bodies are covered in the whole area in the bottom mat is avoided by the mode that the support bodies are arranged in the sub-areas of the bottom mat. Meanwhile, the number of the support bodies in different support areas and the arrangement gaps among the support bodies can be different, and the structural stability of the base mat can be effectively improved by densely arranging the support bodies in the stress concentration areas, so that the base mat has a longer service life. The shape of the support area 9 may be a regular geometrical shape such as a rectangle, a triangle or a circle. Preferably, the support area 9 has a first projection 19 and a second projection 20. The support region 9 is formed, for example, in a shuttle shape in the direction of the line connecting the first projection 19 and the second projection 20 such that the width of the cross section perpendicular to the line connecting direction is increased from small to small. Preferably, the support region 9 having the first and

second protrusions

19 and 20 is disposed at a position corresponding to a thigh of a human body. Under the standard position of sitting condition, human body slightly leans back makes the waist obtain to support and forms comfortable state, and this moment, buttock department atress is the biggest, and on the extending direction of human buttock to knee, the atress at thigh position is the state of decrementing, and the contact area at thigh position and cushion also is the trend of decrementing, and the width of cross section is the distribution of stress that the shuttle-shaped supports the region by little grow diminishes again and accords with thigh position and contact area's distribution characteristics, more is favorable to building comfortable just sitting and experiences.

Preferably, the drive motors 8 are each electrically connected to the control module 10. Each drive motor 8 is formed with a duration suitable for its current state based on the independent control signal of the control module 10. Human buttock and thigh position are under the condition that contacts the cushion surface and sit completely, and a plurality of supports regional 9 and provides the support for its buttock and thigh position that corresponds, and the support extrusion force based on support regional 9 makes buttock and thigh position receive corresponding extrusion force, just forms uncomfortable sitting experience when local extrusion force is too big, the different surface morphology of the form of the health position self of cooperation buttock muscle and thigh muscle formation for it is more difficult in order to form unified coordinated state to the regulation and control matching of each regional holding power to the health position. The single driving control mode of the transmission shaft enables the adjustment of the surface form of the bottom cushion to be more diversified. Based on different rotation angles of the transmission shaft, the shape of the body part can be better matched. Preferably, based on the independent control signal of the control module 10, the single driving motor 8 can be independently turned on and control the working time to define the working form of the dynamic and/or cyclic variation of the local surface form of the base mat, and the local position can correspond to the acupuncture points of the human body to realize the fixed-point massage to the acupuncture points of the human body. The whole circulation massage of ordinary massage seat chair can improve blood circulation state, what it was built is that a comfortable relaxed sitting is experienced, produces the sitting atmosphere that lets people drowsy, the spirit excessively relaxes. The fixed point massage to the human acupuncture points can quickly improve the attention and the mental state, and is more beneficial to forming a more efficient learning state for the sitting person. Preferably, the control module 10 is capable of generating control signals for different driving motors based on data such as pressure fluctuation range, pressure duration or dynamic variation frequency of pressure, at least two driving motors 8 are capable of generating mutually coordinated working states based on the control signals, and dynamic combinations of mutually different on-time nodes and off-time nodes of the driving motors 8 are capable of generating richer surface morphology combinations, and are capable of better adapting to weak or strong user groups such as hip muscles and thigh muscles with different degrees of development.

Example 2

This embodiment is a further improvement of embodiment 1, and repeated contents are not described again.

As shown in fig. 1, the cover 1 includes an outer first elastic layer 17 and an inner second elastic layer 18. The elastic modulus of the first elastic layer 17 is smaller than that of the second elastic layer 18 so that the second elastic layer 18 has a softer texture than the first elastic layer 1. The first elastic layer 17 is a leather product, a cloth product or a cotton product, and the second elastic layer 18 is a memory sponge, a silica gel product or a cotton product. By having an elastic covering, the surface of the cushion is not rigid, and the moment a sitting person touches the cushion to sit down has a more comfortable state due to the cushioning effect of the elastic covering. Preferably, as shown in fig. 6, the support areas 9 of different shapes can be individually fitted to the cover 1 corresponding to their shape. The second elastic layers of the cover 1 of the different support regions 9 have different materials from each other. The second elastic layer of the support areas corresponding to the legs, which are located at both sides of the seat cushion and have the first and

second protrusions

19 and 20, is preferably a memory sponge. The second elastic layer of the support area corresponding to the buttocks on the center line of the seat cushion is also preferably a memory sponge. In the sitting process of the sitting person, the hip part is firstly contacted with the cushion, the thigh part is in a suspended state, the sitting person can stand up again to move the hip part to be matched with a proper sitting position based on the artificial habit, and after the hip part is positioned, the leg part is contacted with the cushion and slowly relaxed to enable the leg part and the hip part to be not in a tight state. The support areas using memory sponges corresponding to the buttocks and legs enable the seated person to more quickly enter a comfortable sitting position.

As shown in fig. 8, the support rod 3 includes a first member 23, a second member 24, a ball 22, and a spring 21. The first member second end 28 and the second member second end 30 are open-ended as defined by the ends of the tube, wherein the first member second end 28 has a larger circular cross-section than the second member second end 30. The first member second end 28 and the second member second end 30 are connected by the ball 22 in a nested manner such that the first member 23 and the second member 24 have a relatively sliding operational condition. The first member first end 27 is convex and the second member second end 29 is planar. The spring 21 is arranged in the inner cavity of the support bar 3 in such a way that one end is connected to the first part and the other end is connected to the second part. The first part 23 and the second part 24 can slide relatively when the support rod 3 is subjected to external force again through the ball 22 and the spring 21 under the condition that the sitting person sits down on the support rod 3, so that the surface form of the base mat avoids uncomfortable feeling caused by lack of buffering in the dynamic adjusting process. The spring 21 has a resilience such that the relative displacement of the first and

second members

23, 24 is limited to within 15 mm.

Example 3

This embodiment is a further improvement of embodiment 1 or embodiment 2, and repeated contents are not described again.

The base mat of the present invention can be used alone and removably attached to an article such as a sofa, a seat, a bench, etc. A user mounts a base cushion to a seat cushion or a backrest of a seat through a fixing member. Or the user mounts the two base cushions to the seat cushion and the squab of the seat, respectively, by means of fastening assemblies. In this way, a user can modify a common seat into a seat with an adjustable support configuration. The fixing parts can be binding bands which are arranged at the four corners of the bottom cushion and are grouped in pairs.

Preferably, several cams 5 are arranged in such a way that their respective centres of rotation 6 are all located on the same transmission shaft 7. The cams on the same transmission shaft are distributed in mirror symmetry by taking the middle point in the axial extension direction of the transmission shaft as a symmetry center. The straight lines defined by the respective first end point 5a, which is farthest from the center of rotation 6, and the second end point 5b, which is closest to the center of rotation, of the two adjacent cams 5 are at an angle to each other. The plurality of cams are arranged on the same transmission shaft, the cams on the same transmission shaft are driven by one driving motor to rotate, the weight and the manufacturing cost of the base pad are reduced, and meanwhile, the position forms which extend along the axial direction of the transmission shaft and change in an undulate manner are obtained by matching the cams arranged on the same transmission shaft and have different position forms.

Preferably, as shown in fig. 6 and 7, several transmission shafts 7 of different lengths are distributed according to a parallel row-like configuration to each other and thus define support areas 9 of different shapes. Wherein the support area 9 of the seat cushion and the support area 9 of the backrest cushion each comprise at least three shapes. The support area 9 of the seat cushion is distributed in a zigzag-shaped area defined by ischial nodes 25 of the buttocks and at least two pressure nodes 26 inside the seat cushion. The support areas with different shapes and different surface forms are limited through the transmission shafts in a parallel row distribution mode, and the weight increase caused by the fact that the support bodies are covered in the whole area in the base mat is avoided by arranging the support bodies in the sub-areas of the base mat. Preferably, as shown in fig. 6, the seat cushion is divided into a first area a, a second area B and a third area C which are arranged in parallel in a row. The first area A and the second area C are distributed on the left side and the right side of the second area B. At least one support area 9, in which the axial extension direction of the transmission shaft is parallel to the direction of the second area B extending from the front side to the rear side, is distributed in each of the first area a and the third area C. In the second region B, at least one support region 9 is distributed in which the direction of extension of the axis of the drive shaft is perpendicular to the direction in which it extends from the front side to the rear side. When the buttocks of the sitting person contact the support region 9 in the second region B, a support form with a height fluctuating along the hip width direction can be formed based on the fact that the axial direction of the transmission shaft in the support region is parallel to the hip width direction, and the buttocks form in a W shape can be better matched. Meanwhile, in the support areas in the first area A and the third area C, the axial extension direction of the transmission shaft is parallel to the natural trend of the thighs in the sitting posture, and the axial extension direction of the transmission shaft is perpendicular to the natural trend of the thighs. Thus, the uncomfortable state of being supported by the partition is less likely to be generated on the legs of the sitting person. In addition, under the sitting gesture, the personnel of sitting often let the health rock about under the liftoff condition of both feet because of the position of sitting is uncomfortable, lead to the regional atress of support that corresponds with the thigh position to increase, the bracing piece among the support area in first region A and the third region C parallels with the direction of rocking about with the relative slip direction of cam to can be better alleviate rock the impact damage of impact force to cam contact position about.

Preferably, as shown in fig. 6 and 7, the number of support bodies arranged in the support regions 9 of different shapes and the arrangement gap between the support bodies may also be different. The pressure on the cushion is designed according to the principle that different parts of the buttocks bear different pressures, namely the pressure at the ischial joints is maximum and gradually decreases towards the periphery, and the pressure is reduced to the lowest value when reaching the thigh parts. Wherein, the supporting region 9 with larger stress has a plurality of supporting bodies 4 which are arranged in a larger number or higher density than the supporting region 9 with smaller stress. The mode that the supporter was set up in close packing can effectively improve the structural stability of heelpiece, has improved the homogeneity that the part of atress concentration region received the pressure for the heelpiece has more lasting life. Preferably, the arrangement mode is set according to a mode that the front part is denser and the rear part is sparser before people sit on the seat, and the arrangement density of the front edge is slightly lower than that of the other three edges according to the change of the load borne by the people after the people sit on the seat. By means of the arrangement mode, the supporting force can be provided for people when the people sit on the seat, the people do not have the feeling of falling tendency, the supporting effect from back to front is provided for the people after the people sit on the seat, the parts where the prostate is located are not pressed, and the comfortable sitting feeling is facilitated.

Preferably, as shown in fig. 3, the base mat further comprises a pressure sensor 11 disposed on the work surface 4a and electrically connected to the control module 10. The pressure sensor 11 may be one of a sapphire pressure sensor, a diffused silicon pressure sensor, and a ceramic sensor. The pressure data information collected by the pressure sensor 11 is transmitted to the control module 10 and processed by the control module to generate a control signal, and the driving motor performs corresponding action feedback based on the generated control signal.

Preferably, the base pad further comprises a smart wearable accessory 12 in real-time communication with a communication module 31 electrically connected to the control module 10 and capable of acquiring at least one of the weight, heart rate and body temperature of the seated person. The smart wearable accessory 12 may be one of a smart watch, a smart bracelet, and smart glasses. Wherein, control module 10 is based on the data information that pressure sensor 11 and intelligent wearing accessory 12 gathered and is generated driving motor 8's the control signal of the opening time point and the continuous operating time. In response to the control signal transmitted by the control module 10, the driving motor 8 can start to work and drive the support body to move, and simultaneously the support body can rotate or swing around the connecting body, and the support body can change the inclination angle of the support body based on the combined action of the active driving force of the driving motor and the pressure generated by the sitting person. The periodic or continuous control signal can cause the surface morphology of the base pad to dynamically change.

Example 4

As shown in fig. 5, a student seat with a sitting posture adjusting function comprises a seat frame 13 and a base 14 and adopts the base pad of the present invention as its seat cushion 15 and back pad 16, respectively.

Preferably, the back cushion 16 is provided on the seat frame 13 in such a manner that the height thereof from the ground is adjustable. The high comfort level of user is directly influenced to the height from ground of cushion, and according to the difference of user's height, the control range of the height of cushion is within 80 mm.

The seat cushion 15 is provided on the seat frame 13 so that the relative distance from the back cushion 16 can be adjusted. As the height increases, the seating depth of the seat should increase accordingly. The relative distance between the seat cushion 15 and the back cushion 16 is adjusted within 150 mm.

The seat frame 13 is connected to the base 14 so that the height from the ground is adjustable. Preferably, the minimum distance of the seat frame 13 from the ground is 300 mm. The adjustment range of the distance between the seat frame 13 and the ground is within 180 mm.

Preferably, the seated person can manually adjust the front-rear position of the seat cushion, the height of the seat, and the up-down position of the backrest cushion.

Preferably, the student chair further comprises a smart wearing accessory 12 in real-time communication with a communication module 31 electrically connected to the control module 10 and capable of acquiring at least one of the weight, heart rate and body temperature of the sitting person. The smart wearable accessory 12 may be one of a smart watch, a smart bracelet, and smart glasses. Wherein, the control module 10 calculates the duration of the same sitting posture based on the pressure data collected by the pressure sensor 11 and analyzes the monitoring result to determine whether the sitting posture is standard. Based on the duration and the monitoring results, control signals are generated which generate the on-time points and the duration of the operation of the drive motor 8 to actively adjust the topography of the seat cushion 15 and the backrest cushion 16.

Preferably, the user sends a signal to the control module 10 via the control buttons. Control commands are sent by the control module 10 to the drive motors 8 of the seat and back cushions to adjust the height and position of the respective support bodies 4 until a suitable comfort state is found.

Preferably, a set of control commands for circularly changing the seat form are arranged in the control module. Based on the control commands of the cyclic change of the seat configuration, the control module 10 can automatically adjust the seat configuration and/or the backrest configuration to the next state at regular intervals. The sitting posture of the person can be changed unconsciously, and the fatigue caused by keeping a posture for a long time can be relieved.

Preferably, the pressure sensors 11 acquire pressure data to which each support 4 is individually subjected. The control module 10 generates control signals for controlling the operating state of the drive motor 8 based on the pressure data in such a way that the pressure is equally divided to each of the support bodies 4. Through the pressure value equipartition mode, can reduce to a greater extent because individual supporter 4 receives the violent risk of spherical pair wearing and tearing of great pressure state for a long time, improved the overall structure stability of seat and made it have more excellent life.

Example 5

This embodiment is a further improvement of embodiment 4, and repeated contents are not described again.

Preferably, the seat frame 13 has a mounting interface for devices such as control module circuitry, control modules, and communication modules.

Preferably, the seat cushion 15 may be mounted on the seat frame by a first sliding pair. The cushion 16 may be mounted to the seat by a second sliding pair. The seat cushion 15 and the base 14 may be connected by a third sliding pair. The sliding directions of the first sliding pair and the second sliding pair are crossed. The user can adjust the seating depth of the seat cushion 15 by the first sliding pair. The user may adjust the height of the back pad 16 via the second sliding pair. The user can adjust the ground clearance of the seat cushion A through the third sliding pair.

Preferably, the control module 10 may count up the first pressure data set of the pressure sensor located on the left side of the sitting direction and the second pressure data set of the pressure sensor located on the right side of the sitting direction while the user is sitting, in a time-division manner. And when the ratio of the first average pressure of the first pressure data group to the second average pressure of the second pressure data group exceeds a first threshold value for a first preset time, judging that the user has a first bad posture of putting the left leg on the right leg and recording the first duration time of the first bad posture. Or when the ratio of the first average pressure of the first pressure data set to the second average pressure of the second pressure data set is lower than a second threshold value for a first preset time, judging that the user has a second bad posture of putting the right leg on the left leg and recording the second duration time of the second bad posture. The control module 10 may send the counted data of the first bad posture and the second bad posture to the mobile terminal, and the mobile terminal reminds the user of the bad results possibly caused by adopting the corresponding bad posture for a long time according to the obtained data. Through the mode, the user can conveniently check the bad posture of the user in the later period and carry out corresponding adjustment.

Preferably, the control module 10 may count waveforms of pressure data measured by the pressure sensor on the seat cushion while the user is seated, and judge that the user has a third bad posture with trembling legs and record a third duration of the third bad posture when the corresponding waveforms repeatedly appear at more than a first preset frequency. The control module 10 may send the counted data of the third bad posture to the mobile terminal, and the mobile terminal reminds the user of a bad result possibly caused by adopting the corresponding bad posture for a long time according to the obtained data. Through the mode, the user can conveniently check the bad posture of the user in the later period and carry out corresponding adjustment.

Preferably, the control module 10 may count up the first pressure data set of the pressure sensor located on the left side of the sitting direction and the second pressure data set of the pressure sensor located on the right side of the sitting direction while the user is sitting, in a time-division manner. When the first average pressure value of first pressure data set is greater than the second average pressure value of second pressure data set, control module 10 judges that sitting person's position of sitting is left inclined and generates driving motor's control signal, based on this control signal, is located the first operating duration of the left driving motor of sitting person's continuous operation, can massage or remind the sitting person's initiative adjustment position of sitting to sitting person left side health part. Or, based on the control signal, the driving motors on the left side and the right side of the sitting person start to work in a matching manner until the state that the first average pressure value and the second average pressure value are within the set threshold value range is found so as to change the left-leaning sitting posture of the sitting person. Based on the above, the control module 10 can also change the sitting posture of the seated person to be tilted right.

Preferably, the control module 10 may count up the third pressure data group of the pressure sensor located on the front side in the sitting direction and the fourth pressure data group of the pressure sensor located on the rear side in the sitting direction while the user is sitting, in divided periods. When the third pressure data set's the third pressure value of leveling is greater than the fourth pressure data set's the fourth pressure value of leveling, control module 10 judges that sitting person's position of sitting leans forward and generates driving motor's control signal, and based on this control signal, the driving motor who is located sitting person front side lasts for the second duration of operation, can massage or remind sitting person's initiative adjustment position of sitting to sitting person's left side health part. Or, based on the control signal, the driving motors positioned at the front side and the rear side of the sitting person start to work in a matching manner until a state that the third average pressure value and the fourth average pressure value are within a set threshold range is found so as to change the forward leaning sitting posture of the sitting person. Based on the above, the control module 10 can also change the reclining sitting posture of the seated person.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A seat cushion based on a multi-angle supporting and adjusting structure comprises a plurality of connecting bodies (2) and a plurality of supporting rods (3) which are coated by a coating layer (1), and is characterized in that a first fixed end (2a) of each connecting body (2) far away from the coating layer (1) is connected with a first matching end (3a) of each supporting rod (3) close to the coating layer (1) in a manner of jointly forming a spherical pair; wherein the content of the first and second substances,

a second matching end (3b) of the supporting rod (3) far away from the coating layer (1) is in line contact and/or surface contact in a manner of sliding relative to a working surface of the cam (5), the first matching end (3a) is changed in position based on the rotation of the cam (5) around a rotation center (6) of the cam, so that the supporting rod (3) can swing or rotate around a spherical pair while doing linear motion, and the supporting rod (3) can have a working form with any inclination angle with the surface of the cam;

the cams (5) are arranged in a manner that respective rotation centers (6) of the cams are positioned on the same transmission shaft (7), and the cams positioned on the same transmission shaft are distributed in a mirror symmetry manner by taking the middle point in the axial extension direction of the transmission shaft as a symmetry center;

projections of straight lines defined by respective first end points (5a) farthest from the rotating centers (6) and second end points (5b) nearest to the rotating centers of the two adjacent cams (5) in a plane perpendicular to the axial direction of the transmission shaft intersect with each other;

the working surface (4a) of the support body (4) is attached to the coating layer (1), and the support body (4) is fixedly connected to the second fixed end (2b) of the connecting body (2); the support body (4) changes the working form of the working surface (4a) thereof in a manner of moving along with the movement of the first mating end (3a) and/or swinging around the first mating end (3a) in a plane perpendicular to the surface of the cladding layer based on an external force applied to the working surface (4 a);

the transmission shafts (7) with different lengths are connected to a driving motor (8) respectively and driven by the driving motor (8) to rotate, the transmission shafts (7) with different lengths are distributed according to a parallel row shape, support areas (9) with different shapes are defined, and the axial extension directions of the transmission shafts contained in the support areas (9) with different shapes are vertical to each other; the supporting areas (9) with different shapes have different arrangement numbers of supporting bodies and different arrangement gaps; wherein the content of the first and second substances,

the support areas (9) in the cushion are distributed in the square-shaped areas defined by hip ischial nodes (25) and at least two pressure nodes (26) in the cushion, the support areas in the first area A and the third area C which are positioned in the two thigh parts and have the same shape are respectively arranged in the cushion, and the axial extension direction of the transmission shaft of the support areas is parallel to the natural trend of the thighs in the sitting posture.

2. The seat cushion based on multi-angle supporting and adjusting structure of claim 1, characterized in that, under the condition of fixed position of the spherical pair, the supporting body (4) can perform floating dynamic adjustment of the position configuration of the supporting body (4) in a manner of swinging around the spherical pair, thereby enabling the active adjustment based on the supporting rod (3) and the floating dynamic adjustment of the supporting body under the action of external force to match the configuration of the body part.

3. The seat cushion based on a multi-angle support adjustment structure of claim 2, wherein the driving motors (8) are electrically connected to the control module (10), and each driving motor (8) forms a duration of operation suitable for its current state based on an independent control signal of the control module (10).

4. The seat cushion based on a multi-angle support adjustment structure of claim 3, further comprising a pressure sensor (11) provided on the working surface (4a) and electrically connected to the control module (10).

5. The seat cushion based on the multi-angle support adjustment structure of claim 4, characterized in that the control module (10) is further electrically connected with a smart wearing accessory (12) capable of collecting at least one of the weight, heart rate and body temperature of the sitting person, which is communicated by a communication module (31) in real time, and the control module (10) generates the control signal of the on-time point and the continuous working time of the driving motor (8) based on the data information collected by the pressure sensor (11) and the smart wearing accessory (12).

6. The seat cushion based on a multi-angle support adjustment structure of claim 5, wherein the pressure sensor (11) collects pressure data to which each support body (4) is individually subjected, and the control module (10) generates a control signal for controlling the operation state of the driving motor (8) based on the pressure data in such a manner that the pressure is equally distributed to each support body (4).