CN109567462B - Method for adjusting sitting posture and soft and hard comfort of seat - Google Patents
Method for adjusting sitting posture and soft and hard comfort of seat Download PDFInfo
- Publication number
- CN109567462B CN109567462B CN201811545539.XA CN201811545539A CN109567462B CN 109567462 B CN109567462 B CN 109567462B CN 201811545539 A CN201811545539 A CN 201811545539A CN 109567462 B CN109567462 B CN 109567462B
- Authority
- CN
- China
- Prior art keywords
- seat
- pressure
- pressure sensor
- backrest
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/467—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by fluid means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses or cushions
- A47C27/081—Fluid mattresses or cushions of pneumatic type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/54—Supports for the arms
Abstract
The invention discloses a method for adjusting sitting posture and soft and hard comfort of a seat, which comprises the following steps: firstly, designing a backrest chair, wherein the backrest chair comprises a seat plate and a backrest positioned at the edge of the inner side of the seat plate, the joint of the backrest and the seat plate is hinged, and the back surface of the backrest is provided with a sliding groove with two closed ends along the height direction; then, the pressure sensor starts to collect pressure values from the moment that a person just sits on the seat plate, the collection duration time is not more than 1S, and the pressure sensor transmits the pressure values in the time period to the controller for operation and analysis to obtain an average value B; finally, the controller extracts the average value a to subtract the average value B, and the retractor rotationally propels the backrest toward the back side of the seated person when a percentage of a difference between the average value a and the average value a reaches a set value X. The method for adjusting the sitting posture and the softness and hardness comfort of the seat can automatically correct the sitting posture and prevent the seat from sliding and being damaged.
Description
Technical Field
The invention belongs to the technical field of intelligent home furnishing, and particularly relates to a method for adjusting sitting postures.
Background
With the development of society, the labor of people gradually changes from physical labor to mental labor, and changes from standing work to sitting work, particularly for white collars in offices, the sitting time in one day is far longer than the sleeping time in a lying state, so that the body keeps a sitting posture for a long time, most of the current office workers suffer from cervical vertebra and lumbar vertebra diseases in different degrees, and a great number of people have certain humpback, which are not related to the daily sitting posture. Modern people have fast pace of life, large working pressure and short time, and often have no time when busy in a toilet, and have no time for sitting, so that people can start working by busy in hands after hurry to get up and leave, hurry to return to quickly sit down, and never carefully adjust the sitting posture. In addition, at present, when people sit still, the hardness of the seat board is constant, so that people feel uncomfortable, for example, middle-aged and elderly people and young people have different requirements on the softness of the seat board.
Disclosure of Invention
The invention aims to solve the technical problems and provides a method for adjusting the sitting posture and the soft and hard comfort level of a seat, which can automatically correct the sitting posture and prevent the seat from sliding and being damaged.
The technical scheme of the invention is as follows:
a method for adjusting sitting posture and soft and hard comfort of a seat comprises the following steps:
(1) firstly, designing a backrest chair, wherein the backrest chair comprises a seat plate and a backrest positioned at the inner side edge of the seat plate, the joint of the backrest and the seat plate is hinged, and the back surface of the backrest is provided with a sliding groove with two closed ends along the height direction; the seat board comprises a seat cushion arranged above the seat board, the seat cushion is an elastic sac-shaped body with a hollow interior, a plurality of cylindrical springs are vertically arranged in a cavity of the seat cushion, air holes which are blocked at ordinary times are formed in the side wall of the seat cushion, and all the cylindrical springs are arranged in a square array in the cavity; a bearing plate is further padded below the seat cushion, the bearing plate is supported on a cushion table at the bottom of a cavity in the seat plate only by a pressure sensor, the pressure sensor is connected with a controller arranged in the seat plate, so that the controller controls a hydraulic rod arranged on the upper surface of the rear side of the seat plate to stretch and move by receiving signals of the pressure sensor, a mandrel perpendicular to the hydraulic rod is welded at the free end of the hydraulic rod, two connecting rods are respectively arranged at two ends of the mandrel along the radial direction of the mandrel, a roller parallel to the mandrel is arranged between the free ends of the two connecting rods, and the roller is positioned in the chute and can slide in the chute under the stretching action of the hydraulic rod without deviating from the chute; the front ends of the armrests on the two sides of the seat board are respectively provided with an elastic grab handle capable of inflating towards the inside of the seat cushion, and the elastic grab handles are pulled to the positions tightly connected with the end parts of the armrests through elastic ropes arranged in the armrests;
(2) then, the comfort level of the cushion is adjusted; directly holding or pulling out the elastic grab handle and then holding, continuously holding and pinching, and inflating the cushion to ensure that the cushion stops holding and pinching when the softness of the cushion meets the requirements of a user;
(3) then, when a person sits on the back rest chair, the pressure sensor starts to collect pressure values from the moment when the person just sits on the seat plate, the collection duration time is not more than 1S, the pressure sensor transmits the series of pressure values to the controller, and the controller removes the maximum value in the series of pressure values after analysis, stores the rest pressure values and takes an average value A; after the time that the person sits on the seat plate exceeds 6S, the pressure sensor collects the pressure value again, the collection duration time is not less than 5S, and the pressure sensor transmits the pressure value in the time period to the controller for operation and analysis to obtain an average value B;
(4) and finally, the controller extracts the average value A to subtract the average value B, when the percentage obtained by dividing the difference value between the average values A by the average value A reaches a set value X, the telescopic device drives the backrest to rotate and propel towards the back side of the sitting person, continuously detects the value of the percentage in the propelling process, and stops rotating when the percentage is smaller than the set value X.
Furthermore, the sensors are arranged in a plurality, and all the sensors are arranged on the cushion table in a one-to-one opposite mode to the cylindrical springs.
Furthermore, the elastic grab handle is of an elastic bag-shaped structure, an inflatable cavity is arranged in the elastic grab handle, the front end of the elastic grab handle is in a circular arc shape, the cross section of the rest part of the elastic grab handle is in a rectangular shape, a through hole is formed in the circular arc surface of the elastic grab handle, the through hole is plugged by a circular arc-shaped boss, the step surface of the boss is supported and installed around the edge of the through hole through a return spring, and the boss can be pressed down by a thumb when the elastic grab handle is held by a hand to plug the through hole; one side of the elastic grab handle facing the end face of the armrest is also provided with a one-way air inlet device, and the one-way air inlet device is connected with the cavity of the seat cushion, so that when the elastic grab handle is pressed, air flows into the cavity of the seat cushion through the one-way air inlet device.
Furthermore, the one-way air inlet device comprises a connecting pipe positioned in the handrail, the inlet end of the connecting pipe is communicated with an elastic hose communicated with the cavity of the elastic grab handle, and the elastic hose and the elastic rope are retracted into the handrail in a natural state; the connecting pipe is characterized in that a fixing plate which does not seal the connecting pipe is arranged in the connecting pipe along the radial direction of the connecting pipe, a guide rod is vertically fixed on one side of the outlet end of the connecting pipe, a switch spring is sleeved on the guide rod, one end of the switch spring is fixed on the fixing plate, the other end of the switch spring is connected with a piston in a cone frustum shape, the piston can be matched with a cone opening at the outlet end of the connecting pipe, when the elastic grab handle is not held and pressed, the piston seals the cone opening under the tensile force action of the switch spring, and when the elastic grab handle is pressed, the piston is separated from the cone opening under the impact of air flow.
Furthermore, the connecting pipe is embedded in the pipe hole of the horizontal section of the L-shaped elastic pipeline, and the outlet end of the vertical section of the elastic pipeline extends into the cavity of the seat cushion; the controller is also provided with a power supply control switch, and the control switch is arranged on the lower side of the middle part of the handrail; the elastic rope is arranged in a cylindrical tension spring, and two ends of the tension spring are respectively connected with the cavity bottom at the front end of the handrail and the end surface of the elastic grab handle.
Further, the duration time of the pressure sensor starting to collect the pressure value is 1S, the pressure values are collected for at least 4 times and comprise the initial pressure value of the person just sitting on the seat plate, and the other 3 pressure values are collected at 0.3, 0.6 and 0.9S respectively; the continuous time for the pressure sensor to acquire the pressure value again is 7S, the acquisition times are 3 times, and the acquisition time of the 3-time pressure value is 2S, 4S and 6S in the 7S acquisition time; and when the absolute value of the difference between a certain pressure value and the average value of the rest pressure values is larger than 14% of the average value of the rest pressure values in the process of acquiring the pressure values again, the pressure value controller ignores the difference.
Further, the pressure sensor starts to collect pressure values from the moment that a person just sits on the seat plate, the collection time lasts for 0.3-0.5S, the collection times are not less than 5 times, and the pressure values are collected at equal time intervals every time; the time for the pressure sensor to acquire the pressure value again is after the time for the person to sit on the seat plate exceeds 15S.
Further, a pressure sensor connected with the controller is arranged on one side of the backrest facing the back of the person, the pressure sensor and the pressure sensor below the seat cushion are the same in time point of collecting pressure values again and a method for processing pressure value data by the controller after the pressure sensor is transmitted to the controller, the ratio of the pressure average value of the backrest pressure sensor calculated and analyzed by the controller divided by the average value B cannot exceed a set value Y, when the pressure average value exceeds the set value Y, the telescopic device drives the backrest to rotate and advance towards one side of the back of the seated person, before the adjustment mode is executed, a signal line of the telescopic device is directly driven by the controller through acquiring data signals of the pressure sensor below the seat plate, and a switch of the signal line is arranged on the side of the seat plate.
Further, the signal line does not exist, but the pressure sensor under the seat cushion, the pressure sensor on the backrest and the controller are controlled in a linkage mode: when the ratio of the average pressure value of the backrest pressure sensor divided by the average value B exceeds a set value Y, the telescopic device drives the backrest to rotationally advance towards the back side of the seated person; when the ratio of the pressure average value of the backrest pressure sensor divided by the average value B exceeds a set value Y and the percentage reaches a set value X, or the ratio of the pressure average value of the backrest pressure sensor divided by the average value B does not exceed the set value Y and the percentage does not reach the set value X, and both results do not appear, the controller starts a buzzer alarm arranged on the seat plate to give an alarm.
Furthermore, a manual switch is arranged on the armrest of the seat board, and the manual switch can manually control the telescopic movement of the telescopic device.
The invention has the beneficial effects that: the invention adopts the percentage obtained by dividing the difference value obtained by subtracting the average value B after sitting from the average value A acquired and analyzed and calculated in the sitting stage by the average value A, namely, the percentage is used for measuring the change amplitude of the pressure difference value under two conditions of sitting and stable sitting, because the weight of a specific person is constant, when the person sits on the seat, the weight of the specific person is mainly shared by the seat plate below the buttocks and a part of the specific person is transmitted to the backrest, when the person leans on the backrest in a flat lying trend, the force borne by the backrest is necessarily larger, and when the backrest tends to be in an upright state, the extrusion force borne by the back of the person is smaller. The invention combines the sitting habit of a person and is based on the mechanics principle, and determines the relative stress amplitude of the backrest by determining the percentage value so as to properly adjust the inclination angle of the backrest, reasonably share the weight of the human body and correct the sitting posture of the person, so that the stress of the seat is more stable, and the situations of slipping or damage and the like caused by poor sitting posture are prevented. Meanwhile, the cavity in the seat cushion can be inflated, so that the softness of the seat cushion is flexibly improved, and people sitting on the seat cushion are more comfortable. In order to adjust the hardness, an elastic grab handle is specially arranged at the front end of the armrest to conveniently adjust the air pressure in the seat cushion in real time, namely, the hardness of the seat cushion is improved by selectively inflating or deflating by opening an air hole.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is an enlarged view at III in fig. 1.
Fig. 3 is an enlarged view at I of fig. 1.
Fig. 4 is an enlarged view at II in fig. 3.
Fig. 5 is a schematic end view of the unidirectional air intake device.
Fig. 6 and 7 are schematic diagrams of two forces applied in use by the present invention.
Element number description: the seat plate comprises a seat plate 1, a pressure sensor 2, a cylindrical spring 3, a seat cushion 4, a bearing plate 5, a cushion table 6, a backrest 7, a sliding groove 8, a hydraulic rod 9, a controller 10, a handrail 11, an elastic grab handle 12, an elastic pipeline 13, a boss 14, a return spring 15, an elastic rope 16, a connecting pipe 17, a guide rod 18, a switch spring 19, a piston 20, a fixing plate 21, a mandrel 22, a connecting rod 23, a roller 24 and an elastic hose 25.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
a method for adjusting sitting posture and soft and hard comfort of a seat comprises the following steps:
(1) firstly, as shown in fig. 1-3, a back rest chair is designed, which comprises a seat plate 1 and a back rest 7 positioned at the inner side edge of the seat plate 1, wherein the joint of the back rest 7 and the seat plate 1 is hinged, and the back of the back rest 7 is provided with a sliding groove 8 with two closed ends along the height direction.
The seat plate 1 comprises a seat cushion 4 arranged above the seat plate 1, the seat cushion 4 is an elastic capsule body with a hollow interior, a plurality of cylindrical springs 3 are vertically arranged in a cavity of the seat cushion 4, air holes which are blocked at ordinary times are formed in the side wall of the seat cushion 4, and all the cylindrical springs 3 are arranged in a square array in the cavity; a bearing plate 5 is further padded below the seat cushion 4, the bearing plate 5 is supported on a cushion table 6 at the bottom of a cavity in the seat plate 1 only by a pressure sensor 2, the pressure sensor 2 is connected with a controller 10 arranged in the seat plate 1, so that the controller 10 receives a signal of the pressure sensor 2 to control a hydraulic rod 9 arranged on the upper surface of the rear side of the seat plate 1 to move in a telescopic manner, a mandrel 22 perpendicular to the hydraulic rod 9 is welded at the free end of the hydraulic rod 9, two ends of the mandrel 22 are respectively provided with a connecting rod 23 along the radial direction thereof, a roller 24 parallel to the mandrel 22 is arranged between the free ends of the two connecting rods 23, and the roller 24 is positioned in the chute 8 and can slide in the chute 8 under the telescopic action of the hydraulic rod 9 without departing from the chute 8. The front ends of the armrests 11 at the two sides of the seat board 1 are respectively provided with an elastic grab handle 12 capable of inflating towards the inside of the seat cushion 4, the elastic grab handles 12 are pulled to the positions closely connected with the end parts of the armrests 11 through elastic ropes 16 arranged in the armrests 11 so as to inflate towards the inside of the seat cushion 4, so that the hardness is improved, and the elastic ropes 16 can enable a user to take up the elastic grab handles 12, so that the use is more convenient.
(2) Then, the comfort level of the cushion is adjusted; directly holding or pulling out the elastic grab handle and then holding, continuously holding and pinching, and inflating the cushion to ensure that the cushion stops holding and pinching when the softness of the cushion meets the requirements of a user;
(3) then, the pressure sensor starts to collect the pressure value from the moment when the person just sits on the seat plate, the collection duration is not more than 1S, the stage is mainly to collect the pressure value of the pressure sensor when the back of the person is not close to the backrest at the moment of sitting down or just contacts the backrest in the near time, the duration of 1S is taken, this is because it is often a moment when a person sits down, and when a person sits down, the buttocks often first approach and contact the seat plate, then there is a recline action (a small percentage of the special habit people who are not seated or the special case of seating conditions are ignored by the present invention). 1S of the present invention is to capture this special time gap and measure approximately the pressure of a person against the seat when the seated person is not yet close to the back or when the back is not fully seated, which can be considered as the pressure of the person against the seat when the person is not seated. Then, the pressure sensor transmits the series of pressure values to the controller, and the controller removes the maximum value in the series of pressure values after analysis, stores the rest pressure values and takes an average value A; it should be noted that the maximum value is removed because the moment a person sits on the seat usually has a large impact pressure on the seat, and the pressure detected by the pressure sensor is not far from the pressure of the person against the seat when the person is not yet close to the backrest or when the backrest is not fully reclined, or from the pressure of the person against the seat when the person is not yet close to the backrest or when the backrest is not fully reclined, and is therefore removed. After the time that the person sits on the seat plate exceeds 6S, the sitting posture of the person is basically kept stable, the sitting posture is preliminarily determined, the pressure sensor collects the pressure value again, the collection duration time is not less than 5S, the collection duration time is 5S, so that the pressure value for the seat plate after sitting stably is determined again, the pressure sensor transmits the pressure value in the time period to the controller to conduct operation and analysis, and an average value B is obtained, wherein the average value B is the pressure for the seat plate after the person sits stably, and represents the sitting posture of the person to a certain extent.
(4) And finally, the controller extracts the average value A to subtract the average value B, when the percentage obtained by dividing the difference value between the average values A by the average value A reaches a set value X, the telescopic device drives the backrest to rotate and propel towards the back side of the seated person, continuously detects the value of the percentage in the propelling process, and stops rotating when the percentage is smaller than the set value X. The above-mentioned set value X is a variation value, and its specific value is determined according to the specific seat size, so this embodiment does not specifically limit how many the value is, for example, two kinds of seats with high backrest and low backrest are naturally the X value is distinguished, as for the X value, in the actual use, the specific size of the seat is combined to actually measure for a certain group of users, and it is only required to obtain the X value by multiple actual test measurements. The percentage of the difference obtained by subtracting the average value B from the average value a is divided by the average value a in this embodiment, so as to measure the variation amplitude of the pressure difference value between the sitting position and the sitting position, because the weight of a specific person is constant, when the person sits on the chair, the weight is mainly shared by the seat plate under the buttocks and a part of the weight is transmitted to the backrest, as shown in fig. 6-7 for two sitting positions, it can be seen that the more the person leans on the backrest with the tendency of lying down, the larger the force applied to the backrest is necessarily (this is a simple physical mechanical model, and the specific force analysis embodiment is not specifically explained), and the more the backrest tends to stand up, the smaller the pressing force applied to the back of the person is. The embodiment is just combined with the sitting habit of a person and based on the mechanical principle, the relative stress amplitude of the backrest is determined by determining the percentage value, so that the inclination angle of the backrest is properly adjusted, the weight of the human body is reasonably shared, the sitting posture of the person is corrected, the stress of the seat is more stable, and the situations of slipping or damage and the like caused by poor sitting posture are prevented.
Further, the sensors are arranged in a plurality of numbers, and all the sensors are arranged on the cushion table 6 in a one-to-one opposite mode to the cylindrical springs 3, so that the sensors can better collect data.
Furthermore, the elastic handle 12 is an elastic bag-shaped structure, an inflatable cavity is arranged in the elastic handle 12, the front end of the elastic handle 12 is arc-shaped, the cross section of the rest part of the elastic handle is rectangular, a through hole is arranged on the arc surface of the elastic handle 12, the through hole is plugged by an arc-shaped boss 14, the step surface of the boss 14 is supported and installed around the edge of the through hole through a return spring 15, and the boss 14 can be pressed down by a thumb when the elastic handle 12 is held by a hand to plug the through hole; one side of the elastic grab handle 12 facing the end face of the armrest 11 is further provided with a one-way air inlet device, and the one-way air inlet device is connected with the cavity of the seat cushion 4, so that when the elastic grab handle 12 is pressed, air flows into the cavity of the seat cushion 4 through the one-way air inlet device. The structure is simple and easy to implement, is very effective, and is skillfully integrated with the handrail 11, when the air is inflated towards the seat cushion 4 in use, the boss 14 is pressed by a thumb to hold and pinch the air, and when the hand is released, the boss 14 automatically pops up and automatically inhales the air so as to inflate the next time.
Further, as shown in fig. 4-5, the one-way air intake device includes a connecting pipe 17 located inside the armrest 11, an inlet end of the connecting pipe 17 is communicated with an elastic hose 25 communicated with the cavity of the elastic handle 12, and the elastic hose 25 is retracted into the armrest 11 like the elastic rope 16 in a natural state; a fixing plate 21 which does not seal the connecting pipe 17 is arranged in the connecting pipe 17 along the radial direction, a guide rod 18 is vertically fixed on one side of the fixing plate 21 facing the outlet end of the connecting pipe 17, a switch spring 19 is sleeved on the guide rod 18, one end of the switch spring 19 is fixed on the fixing plate 21, the other end of the switch spring 19 is connected with a piston 20 in a cone frustum shape, the piston 20 can be matched with a cone opening at the outlet end of the connecting pipe 17, when the elastic grab handle 12 is not held and pressed, the piston 20 seals the cone opening under the tension of the switch spring 19, and when the elastic grab handle 12 is pressed, the piston 20 is separated from the cone opening under the impact of air flow. The one-way air inlet device is convenient to install in the narrow handrail 11, can well realize one-way air inlet, prevents airflow backflow, and improves the inflation efficiency.
Further, the connecting pipe 17 is embedded in the pipe hole of the horizontal section of the L-shaped elastic pipeline 13, and the outlet end of the vertical section of the elastic pipeline 13 extends into the cavity of the seat cushion 4, so that the maintenance is facilitated, the installation of the elastic material is facilitated, and the elastic pipeline is suitable for the L-shaped installation path.
Further, the controller 10 is further provided with a power control switch disposed at a lower side of the middle portion of the armrest 11 so as to turn off the automatic adjusting function when the function is not required to be used.
Furthermore, the elastic rope 16 is arranged in a cylindrical tension spring, and two ends of the tension spring are respectively connected with the cavity bottom at the front end of the handrail 11 and the end surface of the elastic grab handle 12, so that the grab handle spring is in closer contact with the end surface of the handrail 11, and the integrated effect is better.
Furthermore, the duration of the pressure sensor when starting to collect the pressure value is 1S, at least 4 pressure values are collected and comprise the initial pressure value of a person sitting on the seat plate, and the rest 3 pressure values are collected at 0.3, 0.6 and 0.9S respectively, so that the scientific accuracy of the collected data is ensured as much as possible. The continuous time when the pressure sensor collects the pressure value again is 7S, the collection times are 3 times, and the collection time of the pressure value for 3 times is 2S, 4S and 6S in the collection time of 7S, so that the scientific accuracy of the collected data is guaranteed to the greatest extent. If the absolute value of the difference between a certain pressure value and the average value of the rest pressure values is larger than 14% of the average value of the rest pressure values in the process of acquiring the pressure values again, the pressure value controller ignores the pressure value, because when the absolute value is larger than 14%, the pressure value controller indicates that a person may be in an accidental state such as being in a biped state or suddenly standing half body and the like in the process of acquiring the pressure values again, and the time data should be ignored so as to avoid influencing measurement and later-period operation analysis.
Further, the pressure sensor starts to collect the pressure value from the moment that a person just sits on the seat plate, the collection time lasts 0.3-0.5S, the time period is a relatively conventional time period for sitting on and leaning against the backrest, the collection frequency is not less than 5 times, and the pressure value is collected at equal time intervals every time; the time for the pressure sensor to acquire the pressure value again is after the time for the person to sit on the seat plate exceeds 15S. The measurement can enable the data to be collected more accurately.
Furthermore, a pressure sensor connected with the controller is also arranged on one side of the backrest facing the back of the person, the pressure sensor and the pressure sensor under the seat cushion are the same in the time point of acquiring the pressure value again and the method of processing the pressure value data by the controller after transmitting the pressure value data to the controller, namely the pressure sensor on the backrest is also synchronously acquired when the pressure sensor under the seat cushion acquires the data again, the time point of each acquisition is uniform, and similarly, the pressure sensor transmits the pressure value to the controller for operation and analysis to obtain an average value (average value C), wherein the average value C is the pressure of the back on the backrest after the person is seated stably. Finally, the controller calculates the analyzed average value of the pressure of the backrest pressure sensor (average value C) divided by the average value B, the value of the average value B cannot exceed a set value Y, when the average value B exceeds the set value Y, the telescopic device drives the backrest to rotate and propel towards the back side of the seated person, before the adjustment mode is executed, the controller needs to be closed, a signal circuit of the telescopic device is directly driven by obtaining a data signal of the pressure sensor below the seat plate, namely the telescopic device is directly driven to stretch and retract only through the comparison of the pressure value at the backrest and the pressure value at the seat plate, the collision between the calculated result between the average value A and the average value B and the result of the comparison of the pressure value at the backrest and the average value B is avoided, the two mechanisms only select the latter principle to drive the telescopic device, and a switch of the signal circuit is arranged at the side seat plate, as for the arrangement of the signal line, a person skilled in the art may adaptively modify an automatically controlled signal transmission program, which is not described in detail in this embodiment. In addition, it should be noted that, in this embodiment, the set value Y is the same as the set value X, and is obtained according to a specific seat size, no specific number is limited in this embodiment, and Y and X may also be an interval value, and when the range is lower than this range, the telescopic device may be driven away from the back of the person, so as to obtain a more leaning position.
Further, the signal line does not exist, but the pressure sensor under the seat cushion 4, the pressure sensor on the backrest and the controller are controlled in a linkage manner: when the ratio of the average pressure value of the backrest pressure sensor divided by the average value B exceeds a set value Y, the telescopic device drives the backrest to rotationally advance towards the back side of the seated person; when the ratio of the pressure average value of the backrest pressure sensor divided by the average value B exceeds a set value Y and the percentage reaches a set value X, or the ratio of the pressure average value of the backrest pressure sensor divided by the average value B does not exceed the set value Y and the percentage does not reach the set value X, and both results do not appear, the controller starts a buzzer alarm arranged on the seat plate to give an alarm. The embodiment belongs to two modes, namely the result calculated between the average value A and the average value B and the result calculated and compared between the pressure value at the backrest and the average value B are mutually verified, the scientific accuracy of the controller for driving the telescopic device is ensured, and the situation that the precondition between the two driving principles is inconsistent is shown when an alarm is given, which shows that the corresponding component of one mode possibly has problems.
Further, a manual switch is further arranged on the armrest of the seat board, the manual switch can manually control the telescopic movement of the telescopic device, and the manual switch is used for manually and autonomously adjusting the inclination angle of the backrest and searching for the optimal leaning position. In addition, the manual switch can be used only after the buzzer alarm is started, so that normal use can be continued when the seat is in dysfunction.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A method for adjusting sitting posture and soft and hard comfort of a seat is characterized by comprising the following steps:
(1) firstly, designing a backrest chair, wherein the backrest chair comprises a seat plate and a backrest positioned at the inner side edge of the seat plate, the joint of the backrest and the seat plate is hinged, and the back surface of the backrest is provided with a sliding groove with two closed ends along the height direction; the seat board comprises a seat cushion arranged above the seat board, the seat cushion is an elastic sac-shaped body with a hollow interior, a plurality of cylindrical springs are vertically arranged in a cavity of the seat cushion, air holes which are blocked at ordinary times are formed in the side wall of the seat cushion, and all the cylindrical springs are arranged in a square array in the cavity; a bearing plate is further padded below the seat cushion, the bearing plate is supported on a cushion table at the bottom of a cavity in the seat plate only by a pressure sensor, the pressure sensor is connected with a controller arranged in the seat plate, so that the controller controls a hydraulic rod arranged on the upper surface of the rear side of the seat plate to stretch and move by receiving signals of the pressure sensor, a mandrel perpendicular to the hydraulic rod is welded at the free end of the hydraulic rod, two connecting rods are respectively arranged at two ends of the mandrel along the radial direction of the mandrel, a roller parallel to the mandrel is arranged between the free ends of the two connecting rods, and the roller is positioned in the chute and can slide in the chute under the stretching action of the hydraulic rod without deviating from the chute; the front ends of the armrests on the two sides of the seat board are respectively provided with an elastic grab handle capable of inflating towards the inside of the seat cushion, and the elastic grab handles are pulled to the positions tightly connected with the end parts of the armrests through elastic ropes arranged in the armrests;
(2) then, the comfort level of the cushion is adjusted; the elastic grab handle is directly or pulled out and then held for continuous holding and pinching, and the cushion is inflated to ensure that the holding and pinching are stopped when the softness of the cushion meets the requirements of a user;
(3) then, when a person sits on the back rest chair, the pressure sensor starts to collect pressure values from the moment when the person just sits on the seat plate, the collection duration time is not more than 1S, the pressure sensor transmits the series of pressure values to the controller, and the controller removes the maximum value in the series of pressure values after analysis, stores the rest pressure values and takes an average value A; after the time that the person sits on the seat plate exceeds 6S, the pressure sensor collects the pressure value again, the collection duration time is not less than 5S, and the pressure sensor transmits the pressure value in the time period to the controller for operation and analysis to obtain an average value B;
(4) and finally, the controller extracts the average value A to subtract the average value B, when the percentage obtained by dividing the difference value between the average values A by the average value A reaches a set value X, the telescopic device drives the backrest to rotate and propel towards the back side of the sitting person, continuously detects the value of the percentage in the propelling process, and stops rotating when the percentage is smaller than the set value X.
2. The method for adjusting the sitting posture and the soft and hard comfort of the seat as claimed in claim 1, wherein: the sensors are arranged in a plurality of numbers, and all the sensors are arranged on the cushion table in a one-to-one opposite mode to the cylindrical springs.
3. The method for adjusting the sitting posture and the soft and hard comfort of the seat as claimed in claim 1, wherein: the elastic grab handle is of an elastic bag-shaped structure, an inflatable cavity is arranged in the elastic grab handle, the front end of the elastic grab handle is in a circular arc shape, the cross section of the rest part of the elastic grab handle is in a rectangular shape, a through hole is formed in the circular arc surface of the elastic grab handle, the through hole is plugged by a circular arc-shaped boss, the step surface of the boss is supported and installed around the edge of the through hole through a reset spring, and the boss can be pressed down by a thumb when a hand holds the elastic grab handle to plug the through hole; one side of the elastic grab handle facing the end face of the armrest is also provided with a one-way air inlet device, and the one-way air inlet device is connected with the cavity of the seat cushion, so that when the elastic grab handle is pressed, air flows into the cavity of the seat cushion through the one-way air inlet device.
4. A method of adjusting the sitting posture and the softness and hardness comfort of a seat as claimed in claim 3, wherein: the one-way air inlet device comprises a connecting pipe positioned in the handrail, the inlet end of the connecting pipe is communicated with an elastic hose communicated with the cavity of the elastic grab handle, and the elastic hose and the elastic rope are retracted into the handrail in a natural state; the connecting pipe is characterized in that a fixing plate which does not seal the connecting pipe is arranged in the connecting pipe along the radial direction of the connecting pipe, a guide rod is vertically fixed on one side of the outlet end of the connecting pipe, a switch spring is sleeved on the guide rod, one end of the switch spring is fixed on the fixing plate, the other end of the switch spring is connected with a piston in a cone frustum shape, the piston can be matched with a cone opening at the outlet end of the connecting pipe, when the elastic grab handle is not held and pressed, the piston seals the cone opening under the tensile force action of the switch spring, and when the elastic grab handle is pressed, the piston is separated from the cone opening under the impact of air flow.
5. The method for adjusting the sitting posture and the soft and hard comfort of the seat as claimed in claim 1, wherein: the connecting pipe is embedded in the pipe hole of the horizontal section of the L-shaped elastic pipeline, and the outlet end of the vertical section of the elastic pipeline extends into the cavity of the seat cushion; the controller is also provided with a power supply control switch, and the control switch is arranged on the lower side of the middle part of the handrail; the elastic rope is arranged in a cylindrical tension spring, and two ends of the tension spring are respectively connected with the cavity bottom at the front end of the handrail and the end surface of the elastic grab handle.
6. The method for adjusting the sitting posture and the soft and hard comfort of the seat as claimed in claim 1, wherein: the duration time of the pressure sensor starting to collect the pressure value is 1S, the pressure values are collected for at least 4 times and comprise the initial pressure value of a person just sitting on the seat plate, and the pressure values of the rest 3 times are collected at 0.3, 0.6 and 0.9S respectively; the continuous time for the pressure sensor to acquire the pressure value again is 7S, the acquisition times are 3 times, and the acquisition time of the 3-time pressure value is 2S, 4S and 6S in the 7S acquisition time; and when the absolute value of the difference between a certain pressure value and the average value of the rest pressure values is larger than 14% of the average value of the rest pressure values in the process of acquiring the pressure values again, the pressure value controller ignores the difference.
7. The method for adjusting the sitting posture and the soft and hard comfort of the seat as claimed in claim 1, wherein: the pressure sensor starts to collect pressure values when a person just sits on the seat plate, the collection time lasts for 0.3-0.5S, the collection times are not less than 5, and the pressure values are collected at equal time intervals each time; the time for the pressure sensor to acquire the pressure value again is after the time for the person to sit on the seat plate exceeds 15S.
8. The method for adjusting the sitting posture and the soft and hard comfort of a seat as claimed in any one of claims 1 to 7, wherein: the side of the backrest facing the back of the person is also provided with a pressure sensor connected with the controller, the pressure sensor and the pressure sensor under the seat cushion acquire pressure values again, the method for processing pressure value data by the controller after the pressure sensor and the pressure sensor are transmitted to the controller is the same, the ratio of the pressure average value of the backrest pressure sensor calculated and analyzed by the controller divided by the average value B cannot exceed a set value Y, when the pressure average value exceeds the set value Y, the telescopic device drives the backrest to rotate and propel towards the back side of the seated person, before the adjustment mode is executed, the controller needs to be closed to directly drive a signal line of the telescopic device by acquiring a data signal of the pressure sensor under the seat plate, and a switch of the signal line is arranged on the side of the seat plate.
9. The method of adjusting the sitting posture and the softness and hardness comfort of a seat as claimed in claim 8, wherein: the signal line does not exist, but the pressure sensor under the seat cushion, the pressure sensor on the backrest and the controller are in linkage control: when the ratio of the average pressure value of the backrest pressure sensor divided by the average value B exceeds a set value Y, the telescopic device drives the backrest to rotationally advance towards the back side of the seated person; when the ratio of the pressure average value of the backrest pressure sensor divided by the average value B exceeds a set value Y and the percentage reaches a set value X, or the ratio of the pressure average value of the backrest pressure sensor divided by the average value B does not exceed the set value Y and the percentage does not reach the set value X, and both results do not appear, the controller starts a buzzer alarm arranged on the seat plate to give an alarm.
10. The method of adjusting the sitting posture and the softness and hardness comfort of a seat as claimed in claim 9, wherein: and a hand switch is also arranged on the armrest of the seat board and can manually control the telescopic movement of the telescopic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545539.XA CN109567462B (en) | 2018-12-17 | 2018-12-17 | Method for adjusting sitting posture and soft and hard comfort of seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545539.XA CN109567462B (en) | 2018-12-17 | 2018-12-17 | Method for adjusting sitting posture and soft and hard comfort of seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109567462A CN109567462A (en) | 2019-04-05 |
| CN109567462B true CN109567462B (en) | 2021-10-22 |
Family
ID=65930627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811545539.XA Active CN109567462B (en) | 2018-12-17 | 2018-12-17 | Method for adjusting sitting posture and soft and hard comfort of seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109567462B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215067A (en) * | 2019-06-13 | 2019-09-10 | 叶传林 | A kind of Intelligent seat |
| CN110440732A (en) * | 2019-08-26 | 2019-11-12 | 中国标准化研究院 | A kind of sofa ergonomics test device and method |
| CN111024430B (en) * | 2019-12-25 | 2021-09-14 | 浙江省轻工业品质量检验研究院 | Method for testing stability of body pressure distribution of hard seat |
| CN114734888B (en) * | 2022-03-15 | 2024-01-19 | 东风柳州汽车有限公司 | Vehicle seat control method, device, equipment and storage medium |
| CN114652131A (en) * | 2022-03-24 | 2022-06-24 | 慕思健康睡眠股份有限公司 | Control method and device of intelligent mattress, electronic equipment and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101828820A (en) * | 2009-08-18 | 2010-09-15 | 郑世镇 | Sitting posture supervising chair |
| CN102440588A (en) * | 2011-09-09 | 2012-05-09 | 上海交通大学 | Man-machine interaction intelligent device based on sitting posture identification and application thereof |
| CN102846060A (en) * | 2011-06-30 | 2013-01-02 | 上海阿旺特家具有限公司 | Chair capable of automatically adjusting sitting posture |
| CN104013229A (en) * | 2014-05-16 | 2014-09-03 | 湖南农业大学 | Chair capable of automatically rectifying sitting posture and application method thereof |
| CN203801993U (en) * | 2014-05-08 | 2014-09-03 | 湖北理工学院 | Multi-functional desk and chair set |
| CN104367037A (en) * | 2014-09-30 | 2015-02-25 | 陈思倩 | Mobile internet-based sitting time and weight prompting intelligent cushion, pressure acquisition device and sitting time and weight prompting method |
| CN205198904U (en) * | 2015-10-27 | 2016-05-04 | 山西睿智健科技有限公司 | Adjustable chair |
| CN106820716A (en) * | 2017-03-26 | 2017-06-13 | 泉州市知产茂业工业设计有限公司 | The chair and application method of a kind of prevention spondylodynia |
| CN108887978A (en) * | 2018-07-20 | 2018-11-27 | 合肥锐云智能科技有限公司 | A kind of sitting posture detection system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2399823C (en) * | 2002-08-26 | 2011-01-04 | Terry Cassaday | Chair with onboard electrical power source |
| US7484811B2 (en) * | 2006-03-15 | 2009-02-03 | Chang James L | Apparatus for supporting a person and method of forming thereof |
-
2018
- 2018-12-17 CN CN201811545539.XA patent/CN109567462B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101828820A (en) * | 2009-08-18 | 2010-09-15 | 郑世镇 | Sitting posture supervising chair |
| CN102846060A (en) * | 2011-06-30 | 2013-01-02 | 上海阿旺特家具有限公司 | Chair capable of automatically adjusting sitting posture |
| CN102440588A (en) * | 2011-09-09 | 2012-05-09 | 上海交通大学 | Man-machine interaction intelligent device based on sitting posture identification and application thereof |
| CN203801993U (en) * | 2014-05-08 | 2014-09-03 | 湖北理工学院 | Multi-functional desk and chair set |
| CN104013229A (en) * | 2014-05-16 | 2014-09-03 | 湖南农业大学 | Chair capable of automatically rectifying sitting posture and application method thereof |
| CN104367037A (en) * | 2014-09-30 | 2015-02-25 | 陈思倩 | Mobile internet-based sitting time and weight prompting intelligent cushion, pressure acquisition device and sitting time and weight prompting method |
| CN205198904U (en) * | 2015-10-27 | 2016-05-04 | 山西睿智健科技有限公司 | Adjustable chair |
| CN106820716A (en) * | 2017-03-26 | 2017-06-13 | 泉州市知产茂业工业设计有限公司 | The chair and application method of a kind of prevention spondylodynia |
| CN108887978A (en) * | 2018-07-20 | 2018-11-27 | 合肥锐云智能科技有限公司 | A kind of sitting posture detection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109567462A (en) | 2019-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109567462B (en) | Method for adjusting sitting posture and soft and hard comfort of seat | |
| CN109512185B (en) | Intelligent sitting posture adjusting method | |
| US10219628B2 (en) | Office, work and leisure chair and retrofit kit for a chair or a seat surface for causing subliminal movements of the person sitting thereon | |
| US20210244244A1 (en) | Ergonomic Toilet Equipment | |
| US20110266853A1 (en) | Dual use office and leisure chair | |
| CN107095503B (en) | Seat back device with regulatory function | |
| CN109662501B (en) | Multifunctional intelligent backrest chair | |
| EP4215086A1 (en) | Back following support device, long-time sitting prevention control method and office chair | |
| JP5170519B2 (en) | Posture assistance chair | |
| US6390546B1 (en) | Massaging chair | |
| CN110833501A (en) | Automatic massage chair for photo hall | |
| CN203354848U (en) | Energy-saving multifunctional massage armchair | |
| KR101400621B1 (en) | Self-pumping air cushion chair | |
| CN215686099U (en) | Waist rest adjusting device of chair | |
| CN109222484A (en) | A kind of New sofa structure | |
| CN212307323U (en) | Lifting intelligent sofa | |
| CN2922624Y (en) | Adjusting improved structure of chair back | |
| CN220275231U (en) | Rehabilitation chair with traction function | |
| CN216494361U (en) | Old person uses multi-functional body-building leisure chaise longue | |
| CN110464242A (en) | A kind of toilet seat | |
| CN218246439U (en) | Multifunctional chair | |
| CN215304410U (en) | Sofa chair convenient to adjust back | |
| CN218551855U (en) | Adjustable arm-chair | |
| CN210961122U (en) | Automatic sitting posture correcting chair | |
| CN217447178U (en) | Sofa with waist pillow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211009 Address after: 518172 No. 18, Longcun Road, Dakang community, Yuanshan street, Longgang District, Shenzhen, Guangdong Applicant after: SHENZHEN MEIHUAJU INDUSTRIAL Co.,Ltd. Address before: 401120 21-3, building 2, beichengtian street, Jiangbei District, Chongqing Applicant before: Li Jiaju |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |