CN201752302U - Chair - Google Patents

Abstract

The utility model discloses a chair, which comprises chair legs, a seat plate, a backrest, an inclination detection switch and a leaning detection switch. The inclination detection switch is used for detecting pressure states of the seat plate, the leaning detection switch is used for detecting pressure states of the backrest, the inclination detection switch and the leaning detection switch are connected with a control circuit, and the control circuit determines whether a sitting posture of a human body is correct or not according to open-close states of the inclination detection switch and the leaning detection switch, and outputs signals to drive a reminding device for warning when the control circuit detects a bad sitting posture or the bad sitting posture is maintained for a set period of time. The chair combines the function of monitoring human body sitting postures by additionally mounting a detection device on a seat needed by people both working and studying, and improves sitting comfortableness and psychological acceptance of users under the premise of not affecting vertebrations, lumbar vertebras and vision of the users due to the fact that the chair allows the users to sit with bad sitting postures within a short period of time.

Description

A kind of chair

Technical field

The utility model belongs to the seat technical field, specifically, relates to a kind of chair with sitting posture supervising function.

Background technology

As everyone knows, the sitting posture of bending over, bow, shrugging is habitual incorrect sitting-pose, takes place unconsciously, is difficult to be controlled by people's consciousness.But accumulating over a long period to cause people to suffer from diseases such as vertebra, lumbar vertebrae, cervical vertebra and myopia.At present, though emerged in large numbers a lot of patented technologies by correcting incorrect sitting-pose prevention vertebra and lumbar disc disease, pre-myopia prevention and products thereof, correct braces etc. such as correcting sitting posture support or figure.But, often all there is a common disadvantage in these products, that is exactly that in a single day the user wears or use this rectification product, just must be subjected to its constraint and remain correct posture, thereby make the user be in is forced to always, uncomfortable state, in the course of time can be from producing repulsion at heart to this product, and cause the user consciously or unconsciously not use the result of this product thus.For the relatively poor students in middle and primary schools of those self-controls, often all be to use this rectification product in face of father and mother particularly, father and mother leave aside it once leaving.So, the effect that reaches prevention lumbar spine disease or pre-myopia prevention by correcting faulty sitting posture has not just been known where to begin yet.

In order to address the above problem, a kind of chair with prompting incorrect sitting-pose is suggested, and its patent No. is ZL200720169308.4.This patented technology is improved by the seat that must all use when learning or handle official business people, not only can play the effect of correcting user's incorrect sitting-pose, and does not have the problem of above-mentioned " consciously or unconsciously not using ".But, the seat of this structure but can't resolve after the user bends over, because its upper body center of gravity still can not make the problem of fixture upset in back one side, though eyes can maintain a certain distance from books like this, but may make lumbar vertebrae and vertebra be in case of bending for a long time, fail to accomplish the correct sitting posture requirement of " thigh keeps vertical substantially with upper body ".In addition, the seat of this structure moves labyrinths such as fixture whirligig, thereby causes defectives such as production cost height, dependability difference because of using the upper and lower displacement sense switch.

The utility model content

The purpose of this utility model is to provide a kind of chair with sitting posture supervising function, can the human body sitting posture of taking a seat thereon be detected, and carries out active and remind when sitting posture is bad.

For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:

A kind of chair, comprise chair leg, seat, backrest and be used to detect the tilt detection switch of seat pressured state and be used to detect the dependence sense switch of backrest pressured state, described tilt detection switch is connected control circuit with the dependence sense switch, described control circuit judges according to the open and-shut mode of tilt detection switch and dependence sense switch whether the sitting posture of human body is correct, and detecting sitting posture when bad or after keeping duration of incorrect sitting-pose to arrive setting-up time, output signal drives the alarm set alarm.

Further, be provided with quiet fixture and moving fixture between described chair leg and seat, quiet fixture is fixed on the chair leg, and moving fixture is fixed on the seat, and moving fixture and quiet fixture are hinged, and moving fixture can quiet relatively fixture swing; At the upper surface of described quiet fixture or the lower surface of moving fixture described tilt detection switch is set, whether pressurized changes its on off state to described tilt detection switch according to seat.

In order to realize the accurate detection of human body sitting posture, described tilt detection switch preferably is provided with two, and wherein, the top rake sense switch is positioned at the first half of seat below, and the rear-inclined sense switch is positioned at the latter half of seat below.

In order to make the tilt detection switch not keep off-state during pressurized at seat, also be provided with elastomeric objects at the upper surface of described quiet fixture or the lower surface of moving fixture, lift described moving fixture on the application of force when described elastomeric objects is in not pressured state at seat, make the tilt detection switch be in initial off-state.

Further again, described backrest is connected with back rest supports; In order to realize the whether accurate detection of backrest pressurized, can adopt following three kinds of versions for the mounting means that leans on sense switch:

The first is installed in the back side and the position relative with back rest supports of backrest with described dependence sense switch, perhaps is installed on the back rest supports and the position relative with backrest.

It two is, on described backrest articulated elements is installed, and back rest supports is hinged on the described articulated elements; Spring leaf and described dependence sense switch are installed in the internal cavities of described articulated elements, and when the backrest pressurized, described dependence sense switch contacts with spring leaf.

It three is, described backrest is connected with an end of back rest supports, and the other end of back rest supports is articulated in the lower surface of the fixture (can be quiet fixture, also can be fixture) that is used for fixing seat and chair leg; Described dependence sense switch is installed on the lower surface and the position relative with back rest supports of fixture, perhaps is installed on the back rest supports and the position relative with the fixture lower surface.

When above-mentioned seat use colony as students in middle and primary schools the time, for the head of a family who makes the outside, room can monitor child's sitting posture, the utility model is provided with a wireless transmitter module in control circuit, to be used for realizing radio communication with the radio receiver of far-end, the warning information that produces is sent to radio receiver, child's sitting posture is supervised and guided to notify the head of a family.

Further again, in order to guarantee that the user is being under the situation of correct sitting posture, back one rests on the described backrest surely, realize the detection accurately of sitting posture, the utility model setting of preferably backrest being leaned forward, and be hinged by back rest supports and the fixture (can be quiet fixture, also can be fixture) that is used for fixing seat and chair leg; Pass described fixture and back rest supports successively with a screw rod, suit hairspring and bulky spring successively then, and compression spring nut is installed at the end of screw rod.

Further, in order to adapt to the use colony of different heights, an adjusting screw(rod) more preferably is threaded on described back rest supports, one end of described adjusting screw(rod) is relied on the bottom surface of described fixture, by the distance between rotation adjusting screw(rod) change back rest supports and the fixture, and then the free adjustment of realization backrest forward leaning angle.

Compared with prior art, advantage of the present utility model and good effect are: the utility model is by installing checkout gear additional on the seat that all must use when people's work and study, make seat have the human body sitting posture concurrently, and after keeping defective mode to reach certain hour, human body sitting posture carries out the monitoring function that active is reminded, not only simple in structure, with low cost, effect is remarkable, and because this seat allows the user to take a seat with faulty posture at short notice, thereby can not be to user's vertebra, under the prerequisite that lumbar vertebrae and eyesight impact, that has improved the user takes a seat comfort level and psychological acceptance level, has reached pre-myopia prevention and waist, neck, the purpose of spinal disease.

After reading the detailed description of the utility model embodiment in conjunction with the accompanying drawings, other characteristics of the present utility model and advantage will become clearer.

Description of drawings

Fig. 1 is the structure side view of a kind of embodiment of the chair with sitting posture supervising function that proposes of the utility model;

Fig. 2 is the internal control circuit theory diagram of chair shown in Figure 1;

Fig. 3 is the schematic diagram that occupies chair shown in Figure 1 with correct body position;

Fig. 4 is the schematic diagram of three kinds of incorrect sitting-poses;

Fig. 5 is the structure side view of second kind of embodiment of the chair that proposes of the utility model;

Fig. 6 is the structure side view of the third embodiment of the chair that proposes of the utility model;

Fig. 7 is the state diagram after chair shown in Figure 6 leans on backward;

Fig. 8 is the Chair structure side view with backrest forward leaning angle free adjustment function.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is done explanation in further detail.

Chair of the present utility model not only is provided with chief components such as chair leg that traditional Chinese chair all comprises, seat, backrest, and, also further in seat, be provided with the dependence sense switch that is used to detect the tilt detection switch of seat pressured state and is used to detect the backrest pressured state in order to realize the sitting posture supervising function.Described tilt detection switch is connected with the control circuit of seat inside with the dependence sense switch, and control circuit judges according to the open and-shut mode of tilt detection switch and dependence sense switch whether the sitting posture of human body is correct.Its operation principle is: when the user is sitting on the seat seat, the action of tilt detection switch pressurized, change its original state (such as switching to closure state by initial off-state, perhaps switch to off-state by initial closure state, be that example describes only below) with first kind of state switching mode, whether wake-up control circuit enters operational mode, and simultaneously the state that leans on sense switch is detected, rest on the backrest to judge the user.Because the correct sitting posture after human body is taken a seat is to keep thigh vertical substantially with upper body, therefore, control circuit when promptly human body back rests on the backrest, thinks that human body sitting posture is correct when detecting the action of dependence sense switch; Otherwise, think that human body sitting posture is incorrect, and when detecting incorrect sitting-pose or after keeping duration of incorrect sitting-pose to arrive the predefined time, drive the alarm set alarm, to remind user's correcting sitting postures immediately.

Because human body can not keep correct sitting posture motionless when work or study always, the pen on the ground or the actions such as picking and placeing article of reaching forward also can appear stretching oneself, bending over to pick up once in a while, at this moment, the human body upper body may leave backrest, makes control circuit be judged as the current incorrect sitting-pose state that is.If adopt type of alarm immediately, alarm set this moment outputting alarm immediately then.This obviously design is reluctant to accept for some user.For the psychology that can cater to consumers in general is better accepted requirement, the utility model is preferably when the design control circuit, control circuit is not alarmed earlier when detecting incorrect sitting-pose and occur, but after detecting the lasting arrival of this incorrect sitting-pose setting-up time, drive alarm set alarm again, so that the designed notification mechanisms of the utility model is more reasonable.

Elaborate the concrete establishment structure and the operation principle thereof of the chair of described sitting posture supervising function below by a specific embodiment.

Embodiment one, and referring to shown in Figure 1, the chair of present embodiment utilizes fixture that seat 7 and chair leg 1 are fixed together, and wherein, fixture can be made up of moving fixture 3 two parts that are used to install and fix the quiet fixture 2 of chair leg 1 and are used to install and fix seat 7.Present embodiment be that example describes with the pressure lifting rod-type chair leg 1 of band universal wheel only, as shown in Figure 1, offers a circular hole in the middle part of quiet fixture 2, fixes after this circular hole is inserted in the upper end of the pressure lifting bar of chair leg 1.Described quiet fixture 2 is hinged with moving fixture 3, and make the fixture 3 can quiet relatively fixture 2 swings.Specifically, can offer axis hole, utilize bearing pin 51 to pass described axis hole, realize the hinged of quiet fixture 2 and moving fixture 3 in the middle part of the quiet fixture 2 and moving fixture 3 left and right sides.The tilt detection switch is installed on the below of seat 7, lower surface such as upper surface that is installed in quiet fixture 2 or moving fixture 3, after making seat 7 pressurizeds, can under the pressure of seat, change its original state (such as switching to closure state by initial off-state, perhaps switch to off-state by initial closure state, below the present embodiment only the switch with the previous case be that example describes), with the notice control circuit enter operational mode, begin the sitting posture of human body is detected.

In order to realize the accurate detection of human body sitting posture, present embodiment preferably one in front and one in back is provided with two tilt detection switches 41,42 below seat 7, as shown in Figure 1, is that example describes with the upper surface that is arranged on quiet fixture 2.Wherein, top rake sense switch 41 is positioned at the first half centre position of seat 7 belows, rear-inclined sense switch 42 is positioned at the latter half centre position of seat 7 belows, and the position of centre of gravity after taking a seat according to human body oppresses one of them tilt detection switch closure or two tilt detection switches are closed simultaneously.

In order to guarantee that tilt detection switch 41,42 disconnects when seat 7 is in not pressured state, present embodiment also further is provided with elastomeric objects at the upper surface of quiet fixture 2 or the lower surface of moving fixture 3, such as helical spring or strip spring leaf etc., utilize on the elastic force of elastomeric objects and lift described moving fixture 3, to keep the off-state of tilt detection switch 41,42 when seat 7 is not stressed.With the helical spring is that example describes, present embodiment preferably is provided with two helical springs 61,62 at the upper surface of quiet fixture 2, and be installed on the next door of top rake sense switch 41 and rear-inclined sense switch 42 respectively, upwards support moving fixture 3 simultaneously, make top rake sense switch 41 and rear-inclined sense switch 42 when seat nobody takes a seat, guarantee that tilt detection switch 41,42 keeps off-state.

The backrest 8 of seat is hinged by back rest supports 9 and quiet fixture 2, specifically can back rest supports 9 be hinged on the lower surface of quiet fixture 2 by bearing pin 82, as shown in Figure 1, the other end of back rest supports 9 is hinged by axle 52 and articulated elements 10, and described articulated elements 10 is fixed in the back side of backrest 7.On described axle 52, also be set with helical spring 63, the spring wire of these helical spring 63 1 ends forces in back rest supports 9, the other end forces in articulated elements 10, thereby when human body does not rest on the backrest 8, make backrest 8 be subjected to the elastic force effect of helical spring 63 and be the bottom sweptback state, promptly be resisted against on the back rest supports 9.The back side and the position relative with back rest supports 9 that sense switch 43 is installed in backrest 8 will be leaned on, as shown in Figure 1, perhaps be installed on the back rest supports 9 and the position relative with backrest 8, when human body does not rest on the backrest 8, lean on sense switch 43 owing to pressurized is in closure state in backrest 8 or back rest supports 9; And when human body rests on the backrest 8 with correct sitting posture, the top hypsokinesis of backrest 8, leaning forward in the bottom, as shown in Figure 3, leans on sense switch 43 disconnections thereby make, and notice control circuit human body back has rested on the backrest 8.Control circuit judges according to the open and-shut mode of tilt detection switch 41,42 and dependence sense switch 43 whether the sitting posture of human body is correct.

Fig. 2 is the theory diagram of described seat internal control circuit, mainly comprises parts such as timer 111, scheduled time memory 114, acoustic information memory 113, signal actuator 115, central signal processor 112, alarm set 121 and display unit 13.Wherein, timer 1111,1112,1113 is respectively with tilt detection switch 41,42 with lean on 43 corresponding connections of sense switch, and the triggered time of each switch is carried out timing.Timer 111 also is connected with central signal processor 112 simultaneously, and central signal processor 112 connects each sense switch 41,42,43 and scheduled time memory 114, signal actuator 115 and acoustic information memory 113 simultaneously.In case central signal processor 112 detects one of them of forward and backward tilt detection switch 41,42 when closed, thinks and has taken on chair, send control instruction immediately and wake the operation that powers on of each functional module up, begin human body sitting posture is judged.When rear-inclined sense switch 42 closures, when leaning on sense switch 43 and disconnecting, central signal processor 112 thinks that human body sitting posture is correct, i.e. sitting posture as shown in Figure 3, and this moment, the central signal processor 112 did not drive alarm set 121 alarms.Take a seat chronic when human body with correct body position and feel when not feeling better, naturally can conversion take a seat posture, such as the incorrect sitting-pose that is transformed into as shown in Figure 4, can not guarantee rear-inclined sense switch 42 closures this moment simultaneously, lean on the state that sense switch 43 disconnects, timer 111 picks up counting, and the setting-up time of preserving in timing arrival scheduled time memory 114 is (such as the time of 1141 memory stores, for example 30 seconds) after, central signal processor 112 sends control instruction to signal actuator 115, drives alarm set 121 and carries out voice reminder.If human body (in 30 seconds) in setting-up time is adjusted sitting posture to correct body position, perhaps hearing that the prompting back changes sitting posture to correct body position, thereby satisfy rear-inclined sense switch 42 closures, lean on the condition that sense switch 43 disconnects, at this moment, timer 111 stops timing and empties, and central signal processor 112 notification signal actuators 115 control alarm sets 121 stop alarm.This design, can make seat allow human body in the reasonable time scope, to take a seat with faulty posture, thereby after avoiding the user to take one's seat with the correct body position of " thigh keeps vertical substantially with upper body " for a long time, the muscle that appearance is relevant with cervical vertebra and eyes produces tired problem easily.

At the not high user of some consciousness, such as some students in middle and primary schools, after appearing at alarm set 121 and alarming, these users are not in order to allow alarm set 121 continue alarm, and of short duration immediately taking a seat with correct sitting posture, then returning to incorrect sitting-pose again continues to take a seat, thereby make the user can in whole learning process, can keep incorrect sitting-pose for a long time, present embodiment can also further be provided with the duration setting value (such as setting 40 seconds) of correct sitting posture, and this setting value can be kept at (medium such as memory 1142) in the scheduled time memory 114 in advance.When central signal processor 112 notification signal actuators 115 control alarm sets 121 switch to by alert mode stop alert mode after, starting timer 111 simultaneously picks up counting, if the duration that human body keeps correct sitting posture surpasses above-mentioned preset duration setting value (such as 40 seconds), then central signal processor 112 immediately notification signal actuator 115 control alarm sets 121 carry out warning reminding.If human body keeps the duration of correct sitting posture to surpass above-mentioned preset duration setting value (such as 40 seconds), then controlling timer 111 stops timing and empties, for incorrect sitting-pose next time, keeping arriving the setting-up time of preservation in the scheduled time memory 114 (such as the time of 1141 memory stores, for example 30 seconds) after, restart alarm and remind.

Present embodiment is considered the hommization of voice reminder, will remind voice to take voice output by weak crescendo.Beginning is reminded the user with low sound, if the user immediately correcting sitting postures just stop to remind at once; If the user ignores, then (different time period data are stored in the different scheduled time memories 114 central signal processor 112 according to the reminder time of having broadcasted, such as 1142 ... 114N), remind, till correcting incorrect sitting-pose with higher sound.So both consider the user that consciousness is high, considered the not high user of consciousness again.Generally speaking, the closure of the switch 41,42,43 that central signal processor 112 continuous analysis timers 111 provide and the time of disconnection, and then with scheduled time memory 114 in a plurality of scheduled times of having stored compare, and acoustic information according to the plurality of kinds of contents of storage in acoustic information storage 113, drive alarm set 121 by control signal actuator 115 and send different prompting voice, thereby greatly improved the intellectuality and the hommization level of this seat.

Described alarm set 121 can adopt devices such as micro-vibration motor, buzzer, loudspeaker or photophore to realize, also can adopt the combining form of above-mentioned device, and present embodiment does not specifically limit this.

In the present embodiment, can adopt a single-chip microcomputer 11 to realize the function of above-mentioned timer 111, scheduled time memory 114, acoustic information memory 113, signal actuator 115 and central signal processor 112.For sitting posture record by single-chip microcomputer 11 storages, can also export demonstration by display unit 13, consult in the later stage for the user.

When above-mentioned seat use colony as students in middle and primary schools the time, for the head of a family who makes the outside, room can monitor child's sitting posture, present embodiment also further is provided with wireless transmitter module 14 in control circuit, be connected with described single-chip microcomputer 11, to be used for carrying out radio communication with the radio receiver 15 of far-end, the warning information that produces is sent to radio receiver 15, and the alarm set 122 verbal announcement heads of a family by being connected with described radio receiver 15, supervise and guide with sitting posture to child.

Certainly, described dependence sense switch 43 also can be installed on other positions, in the internal cavities that is installed in articulated elements 10, as shown in Figure 5, and in described cavity further mounting spring sheet 64.When nobody was sitting on the chair, backrest 8 was subjected to the elastic force of helical spring 63 to make dependence sense switch 43 be in not stress; Be sitting on the chair and back when resting on the backrest 8 as the people, backrest 8 clockwise rotates, and relies on sense switch 43 be triggered by the pressure of strip spring leaf 64 thereby make.Adopting this project organization, need whether rest on switch on the backrest 8 being used for human body in the control circuit---the corresponding open and-shut mode that leans on sense switch 43 carries out accommodation.

Certainly, also can the top that sense switch 43 is arranged on backrest 8 back sides, back rest supports 9 will be leaned on, and the spring leaf that is close with described dependence sense switch 43 is set above back rest supports 9, when having the people to rest on the backrest 8, dependence sense switch 43 is contacted with this spring leaf, reach the purpose of detection.

In addition, also can replace with infrared sensor leaning on sense switch 43.When human body left the coverage that infrared ray sensor transmits and receives, infrared sensor sent to signal of control circuit, realized whether back rests on the detection on the backrest 8.

Certainly, present embodiment is not limited in above giving an example to installation site and the specific design mode that leans on sense switch 43.

Consider human body when writing or drawing a picture for a long time, if " thigh keeps vertical substantially with upper body " then be not to want neck to want eyeball down to overlook toward front curve may bring long-time anxiety to the local muscle that neck or eyes are correlated with exactlying more greatly like this.And after as long as human body takes a seat, eyes can keep 30 centimeters from desktop, even reach forward also should be correct body position, therefore, present embodiment also can automatically be judged to be correct body position in the back during a kind of sitting posture in order to realize seat, preferably the backrest 8 with seat is designed to forward-lean state, as shown in Figure 6, and is articulated in the lower surface of quiet fixture 2 by back rest supports 9.Carefree device is installed on quiet fixture 2 and back rest supports 9.The carefree device that is provided with on the carefree device of present embodiment and the conventional chair is different, pass quiet fixture 2 and back rest supports 9 successively with a screw rod 6, suit hairspring 71 and bulky spring 72 successively then, and screw on one at the end of the spring side of screw rod 6 and to compress spring with nut 10.For attractive in appearance, can also install upper spring box 161 and lower spring box 162 additional in the outside of spring 71,72.Adopt this structure, can will lean on lower surface and the position relative that sense switch 43 be installed on quiet fixture 2 with back rest supports 9, as shown in Figure 6, perhaps be installed on the back rest supports 9 and with the relative position of quiet fixture 2 lower surfaces.When nobody took a seat, hairspring 71 withstood back rest supports 9 all the time with slight power and abuts against on the quiet fixture 2, made dependence sense switch 43 be in closure state.Take a seat and back when leaning on backrest 8 backward as the people, hairspring 71 compressions, back rest supports 9 is separated with the lower surface of quiet fixture 2, as shown in Figure 7, make to lean on sense switch 43 disconnections, control circuit thinks that human body has rested on the backrest 8 when detecting 43 disconnections of dependence sense switch.

Be not difficult to find out: under the situation that nobody takes a seat, the angle that backrest 8 turns forward is big more, and the angle that allows human body to reach forward is just big more, otherwise more little.And the holding power that this moment, backrest 8 turned forward is from hairspring 71 roof pressure back rest supports 9.When the human body upper body leans against on the backrest 8 backward, as long as it is just passable to overcome the very little elastic force of hairspring 71.If only use bulky spring 72 as present conventional chair, when the past layback of correcting sitting postures upper body, upper body must use very big power that backrest 8 is moved backward, to stop prompting.It is very uncomfortable that such chair can make the people be seated obviously.Therefore, the design of present embodiment had both solved when writing for a long time the problem that allows the upper height time suitably to lean forward, and had solved again when last during after one's death by the suitable rest of needs, and upper body need not use very big power, bore than the problem of pressure greatly to avoid waist.

The user who considers different heights can not guarantee everyone when upper body rests on the backrest 8 when using seat shown in Figure 6, eyes can both apart from 30 centimeters of desktops or more than.Such as for the shorter user of height, may be sitting on the seat of backrest 8 gradients shown in Figure 6, when leaning against thereafter on backrest 8, eyes just can be from 30 centimeters of desktops.And for the higher user of height, when standing with behind thereafter when leaning against on the backrest 8, possible eyes are less than 30 centimeters from the distance of desktop, and seat just can't realize that sitting posture detects accurately like this.In order to adapt to the use colony of different heights, the present embodiment adjusting screw(rod) 5 that preferably on back rest supports 9, is threaded again, as shown in Figure 8, one end of described adjusting screw(rod) 5 is relied on the bottom surface of quiet fixture 2, change distance between back rest supports 9 and the quiet fixture 2 by rotating adjusting screw(rod) 5, and then the free adjustment of realization backrest forward leaning angle, human body is taken a seat after, when upper body rests on the backrest 8 a little, eyes can apart from 30 centimeters of desktops or more than.Adopt this structure it should be noted that: dependence sense switch 43 image pattern 6 again is arranged on the lower surface of quiet fixture 2 like that, realizes the correct detection of control circuit to sitting posture but should adopt as Fig. 1 or mounting means shown in Figure 5.

Consider the office clans that need handle official business for a long time before desk at present, often one to sit be exactly several hrs, and this has very big harm to health, and 5～10 fens kinds of should every work having a rest at least in hour are to alleviate long-time nervous tired muscle.As long as present embodiment has designed in the software programming of single-chip microcomputer 11 tilt detection switch 41,42 one of them closure, the duration that record is closed, and compare with the time of setting (such as 60 minutes), get up to have a rest with regard to reminds people in case arrive setting-up time, to strengthen the human oriented design of seat.Begin the timing that adds up about meeting what condition, the problems such as timing end that when add up, because of technical finesse similar, not explanation one by one here.

Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection domain of the present utility model.

Claims (10)

1. chair, comprise chair leg, seat and backrest, it is characterized in that: on described seat, also be provided with the dependence sense switch that is used to detect the tilt detection switch of seat pressured state and is used to detect the backrest pressured state, described tilt detection switch is connected control circuit with the dependence sense switch, described control circuit judges according to the open and-shut mode of tilt detection switch and dependence sense switch whether the sitting posture of human body is correct, and detecting sitting posture when bad or after keeping duration of incorrect sitting-pose to arrive setting-up time, output signal drives the alarm set alarm.

2. chair according to claim 1, it is characterized in that: between described chair leg and seat, be provided with quiet fixture and moving fixture, quiet fixture is fixed on the chair leg, moving fixture is fixed on the seat, moving fixture and quiet fixture are hinged, and moving fixture can quiet relatively fixture swing; At the upper surface of described quiet fixture or the lower surface of moving fixture described tilt detection switch is set, whether pressurized changes its on off state to described tilt detection switch according to seat.

3. chair according to claim 2 is characterized in that: described tilt detection switch comprises two, and wherein, the top rake sense switch is positioned at the first half of seat below, and the rear-inclined sense switch is positioned at the latter half of seat below.

4. chair according to claim 2, it is characterized in that: also be provided with elastomeric objects at the upper surface of described quiet fixture or the lower surface of moving fixture, lift described moving fixture on the application of force when described elastomeric objects is in not pressured state at seat, make the tilt detection switch be in initial off-state.

5. chair according to claim 1 is characterized in that: described backrest is connected with back rest supports; Described dependence sense switch is installed in the back side and the position relative with back rest supports of backrest, perhaps is installed on the back rest supports and the position relative with backrest.

6. chair according to claim 1 is characterized in that: on described backrest articulated elements is installed, back rest supports is hinged on the described articulated elements; Spring leaf and described dependence sense switch are installed in the internal cavities of described articulated elements, and when the backrest pressurized, described dependence sense switch contacts with spring leaf.

7. chair according to claim 1 is characterized in that: described backrest is connected with an end of back rest supports, and the other end of back rest supports is articulated in the lower surface of the fixture that is used for fixing seat and chair leg; Described dependence sense switch is installed on the lower surface and the position relative with back rest supports of fixture, perhaps is installed on the back rest supports and the position relative with the fixture lower surface.

8. chair according to claim 1 is characterized in that: include a wireless transmitter module in described control circuit, the warning information that produces is sent to the radio receiver of far-end.

9. according to each described chair in the claim 1 to 8, it is characterized in that: described backrest leans forward, and is hinged by back rest supports and the fixture that is used for fixing seat and chair leg; Pass described fixture and back rest supports successively with a screw rod, suit hairspring and bulky spring successively then, and compression spring nut is installed at the end of screw rod.

10. chair according to claim 9 is characterized in that: described back rest supports is threaded with an adjusting screw(rod), and an end of described adjusting screw(rod) relies on the bottom surface of described fixture.

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