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WO2008134922A1 - Stool for alarming occupant to pay attention to posture - Google Patents

Stool for alarming occupant to pay attention to posture Download PDF

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Publication number
WO2008134922A1
WO2008134922A1 PCT/CN2008/000778 CN2008000778W WO2008134922A1 WO 2008134922 A1 WO2008134922 A1 WO 2008134922A1 CN 2008000778 W CN2008000778 W CN 2008000778W WO 2008134922 A1 WO2008134922 A1 WO 2008134922A1
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WO
WIPO (PCT)
Prior art keywords
seat plate
bracket
contact
seat
pressure
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.)
Ceased
Application number
PCT/CN2008/000778
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English (en)
French (fr)
Inventor
Zhengcai Li
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2008134922A1 publication Critical patent/WO2008134922A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
    • 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

Definitions

  • This invention relates to a stool, and more particularly to a stool suitable for a student to be used to alert a sitting posture when sitting is not correct.
  • Chinese patent specification CN1210711 discloses a myopia preventer, which is provided with a signal receiver on the table with a guide cover that can block other signals, for receiving on the student's head or The signal from the signal transmitter on the body, when the student sitting on the stool (hereinafter referred to as the seater) excessively bows and causes the signal receiver to receive no signal, it will alarm.
  • This kind of myopia preventor will put a part of the device on the head.
  • the seater feels uncomfortable and limits the scope of the head too much. If you want to look down on the falling pen or leave the seat for a short time, you will be alerted. All of the above products limit the freedom of movement of certain parts of the body of the sitting person, and require the students to maintain a straight posture for a long time, which is very disadvantageous for the physical development of the adolescents, especially the neck muscles.
  • the technical problem to be solved by the present invention is to provide a free movement that does not restrict any part of the body of the person, when the seated person is in a posture in which the upper body is excessively leaning forward or sitting too close to the front edge of the stool (hereinafter referred to as sitting posture is not correct) or continuously maintained.
  • sitting posture is not correct
  • a stool that can send a reminder signal after a certain period of time.
  • the technical solution of the present invention is: the stool is composed of a seat plate, a bracket, a pressure measuring and controlling device, and a reminding device, and a movable connection is adopted between the seat plate and the bracket for supporting the seat plate, and the pressure measuring and controlling device can be qualitatively Or quantitatively measure the pressure position information of the pressure position and size of the seat plate on the seat plate in real time, and determine the critical pressure information of the seat plate on the seat plate that reflects the correct sitting posture by using the structure of the stool itself or the preset manner.
  • the pressure information measured in real time or the comprehensive pressure information in the continuous time period is compared with the critical pressure information, and according to the comparison result, whether or not the reminding device is actuated to issue a reminder signal, which may be a voice prompt, a music, a buzzer, etc.
  • the sound signal can also be a vibration signal, or a light signal.
  • the pressure of the seat on the seat plate and the front and rear position and upper body of the seated person sitting on the stool are visible. It is related to the degree of forward tilt.
  • This kind of stool does not limit the activities of the rider. It is not exposed on the table and stool that obstructs the freedom of movement and affects the appearance. It can be allowed to pick up items or read some small characters on the book, such as certain annotations. Bending down and bowing, just asking the rider not to lie on the table for a long time or to lean forward too much; Remind that sitting posture is more conducive to cultivating adolescents' consciousness than being forced to maintain a certain sitting position, and is more likely to be accepted by teenagers.
  • Figure 1 is a schematic view of a first embodiment of the present invention.
  • Fig. 2 is an enlarged view of the vibrator 4 shown in Fig. 1.
  • Figure 3 is a schematic illustration of a second embodiment of the present invention.
  • Figure 4 is a schematic view of a third embodiment of the present invention.
  • Figure 1 shows a first embodiment of the present invention
  • the stool that can be used to remind the sitting posture includes a seat plate 1, a bracket 2, a pressure measuring device, a reminding device 4, for the sake of simplicity, in all the drawings and the abstract drawing
  • the section lines of each component are uniformly drawn into metal section lines.
  • the bracket 2 is a shelf composed of four bench legs; the pressure measuring and controlling device is composed of four pressure measuring devices 3, a circuit composed of a processor, a memory, a battery, a switch, etc., wherein the circuit is not shown in the figure, the switch and the battery case Appropriate position on the seat plate 1 for easy operation but not inconvenience, the rest of the circuit is placed inside the seat plate 1, and the four load cells 3 are respectively located between the four contact faces of the seat plate 1 and the bracket 2, each test
  • the pressure device 3 is equivalent to an electronic scale, and can measure the pressure of the person sitting on the stool or the object placed on the stool in real time.
  • the circuit uses the pressure measured by the four load cells 3 as an input signal, and the output signal is used for the output signal.
  • the reminding device 4 is composed of a vibrating block 5, a cam mechanism composed of the cam 7 and the follower 8, and a compression spring 6, and the reminding device 4 is located on the seat plate 1 and is pressed by the thigh of the seated person.
  • the cam 7 is mounted on the seat plate 1 to be rotatable about a fixed center line
  • the compression spring 6 is supported by the follower 8, and the vibrating block 5 having a round cup shape is placed in the groove.
  • the sum of the elastic coefficients is less than the pressure
  • the elastic modulus of the contraction spring 6 is fixed to both the seat plate 1 and the vibration block 5 at both ends of the tension spring 9, and is slightly stretched to function to reset the vibration block 5.
  • the follower 8 performs a complex linear motion in the direction of the surface of the vertical seat plate 1, such as when the vibration block 5 is pressed by the seater's leg and cannot move sufficiently upward, the follower 8 forces the compression spring 6 to be compressed, and the vibration of the vibration block 5 can also be felt in the thigh of the seat.
  • the ratio of the sum of the pressures measured by the two pressure measuring devices 3 on the hind legs of the stool to the sum of the pressures of the two pressure measuring devices 3 on the front legs of the stool is said to be the pressure ratio at that moment.
  • a critical pressure ratio is selected.
  • the difference between the pressure ratio at a certain moment and the critical pressure ratio is called the net pressure ratio at that moment. If the net pressure ratio at a certain moment is less than 0, the seated posture is assumed. Not correct, otherwise, the seater is sitting correctly.
  • the parameters t, m, and n are set in advance, generally taking nm.
  • the processor calculates the net pressure ratio every time t, and sends a reminder signal when one of the following two conditions is satisfied, that is, the cam 7 Rotating at a certain speed for several weeks, through the upper and lower movement of the follower 8 and the action of the compression spring 6, the vibrating block 5 vibrates, reminding the occupant to move the stool forward and sit up straight, one, from the circuit or After the last reminder that the sum of the n net pressure ratios is not less than 0, and after the time mt, the net pressure ratio is added to each of the previous net pressure ratios until the sum is less than 0 and is issued.
  • Reminder signal Second, calculate the sum of the consecutive n net pressure ratios after each reminder, if less than 0, remind again.
  • the pressure ratio at a certain moment accurately reflects the position of the seat plate 1 at the time of the seater's pressure.
  • the critical pressure ratio should be larger.
  • This circuit is relatively simple, the required memory
  • the capacity is not large, the pressure ratio is basically irrelevant to the weight of the person sitting.
  • the vibration reminder is very concealed, does not affect others and aggravates the psychological pressure of the rider. It can be used by students in any occasion, sitting at the rear edge of the seat plate 1 Increasing the pressure ratio will prompt the students to move the stool forward. This not only makes it inconvenient and unnecessary for the upper body to lean forward too much, but also achieves the purpose of developing a good sitting habit, and avoids leaning the backrest of the stool against the back table to influence others to learn.
  • the pressure measuring and controlling device is composed of a sleeve 10, a rotating shaft 11, a compression spring 14, a circuit composed of a processor, a memory, a battery, a switch, a contact 12, a contact 13, and the like, reminding
  • the device is a buzzer, and the sleeve 10 is fixed on the bracket 2, substantially at an intermediate position, and the rotating shaft 11 matched with the sleeve 10 is integrally connected with the seat plate 1 (the sleeve 10 can also be connected to the seat plate, The rotating shaft 11 is connected to the bracket.
  • the front and rear sides of the seat plate 1 or the bracket 2 are based on the center line of the rotating shaft 11, and the contact 12 on the front lower surface of the seat plate 1 and the front side of the bracket 2 are on the front side.
  • the contact of the contact 13 on the surface is The necessary conditions for the whole circuit to be turned on, wherein the rest of the circuit and the buzzer are not shown in the figure, and the switch, the battery case, and the buzzer are disposed on the seat plate 1 or the bracket 2 for convenient operation but not in a proper position, by the processing
  • the memory integrated circuit board is placed inside the seat plate 1 or the bracket 2.
  • the seat plate 1 and the rear side of the bracket 2 are fitted to each other, and the upper surface of the seat plate 1 is in a horizontal position, and a small opening is formed between the front lower surface of the seat plate 1 and the front upper surface of the bracket 2.
  • a predetermined amount of preload is placed in the middle of the front edge between the seat plate 1 and the bracket 2 but is not pressed to
  • the compression spring 14 in the extreme position may also be provided with a plurality of compression springs having a certain preload amount, generally arranged in a line parallel to the rotation shaft 11); the sleeve 10 is fixed at the position on the middle leading edge side of the bracket 2, so that the seat The center of gravity of the board 1 is on its rear side.
  • the pressure on the front surface of the front side of the seat plate 1 is correspondingly increased or the action point is moved forward.
  • the seat plate 1 can be rotated relative to the bracket 2, and the contact 12 is in contact with the contact 13
  • the circuit is turned on.
  • the buzzer beeps to remind the occupant to pay attention to the sitting posture.
  • the reminder signal is issued, if the original setting time or shorter is set
  • the circuit remains in the ON state for a certain period of time, indicating that the seater has not corrected the sitting posture during this period, and continues to beep to remind the rider to pay attention to the sitting posture.
  • the pressure measuring and controlling device of the embodiment can qualitatively measure the pressure information of the seat on the seat plate 1. When the circuit is turned on, the sitting posture is not correct. Otherwise, the sitting posture is correct, and the circuit is simpler than the first embodiment.
  • FIG 4 shows a third embodiment.
  • the stool that can be used to remind the sitting posture also includes a seat plate 1, a bracket 2, a pressure measuring device, and a reminding device.
  • the pressure measuring and controlling device is composed of a sleeve 10, a rotating shaft 11, and a compression spring 14, and the structural features of the portion are the same as those of the second embodiment, which is only reduced compared with the pressure measuring and controlling device of the second embodiment.
  • the circuit portion is composed of a vibration block 5, a compression spring 6, and a spring seat 15.
  • the seat plate 1 has a stepped through hole at a suitable position pressed by the seated thigh of the seat, and a corresponding position in the bracket 2
  • the groove and the axial section of the spring seat 15 are in a "convex" shape, and are placed in the groove on the bracket 2, and the spring seat 15 and the bracket 2 can also be integrally formed, and the compression spring 6 is placed on the step of the spring seat 15.
  • the vibrating block 5 has a round cup shape, is placed on the through hole step of the seat plate 1, and covers the compression spring 6, the top of which is flush with the surface of the seat plate 1, and the compression spring 6 is in a free state, and the upper support surface thereof Just in contact with the vibration block 5.
  • the pressure on the front surface of the front side of the seat plate 1 is correspondingly increased or the action point is moved forward.
  • the seat plate 1 is rotated relative to the bracket 2, and the compression spring 6 is compressed, the seated thigh
  • the feeling of pressure from the vibrating block 5 jacked up by the compression spring 6 can be felt, and the seated person is reminded to pay attention to the sitting posture.
  • the seat plate 1 is rotated backward (counterclock). The sense of oppression naturally disappears.
  • the stool of the embodiment has a simple structure, and the reminder signal can be sent in real time when the sitting posture is not correct, and the more the seater sits forward or the upper body leans forward, the stronger the reminder signal is.
  • the reminder devices can be interchanged, and voice prompts, music, flashing lights, and the like can also be adopted.
  • the relative rotation of the rotating shaft 11 and the sleeve 10 is not only related to the sitting posture of the seater, but also related to the weight of the seater, and the compression spring 14 of the appropriate elastic coefficient is selected according to the weight of the seater;
  • the moving device makes the rotating shaft 11 and the sleeve 10 unable to rotate relative to each other.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)
  • Emergency Alarm Devices (AREA)

Description

可提醒注意坐姿的凳子
技术领域
本发明涉及一种凳子， 尤其涉及一种适于学生使用的当坐姿不芷确时可提 醒注意坐姿的凳子。
背景技术
预防学生学习时上身过分前倾甚至扒在桌子上的措施很多， 如： 利用设置 在桌缘的托架托住下颚， 写作业时目光要在课本与作业本上来回移动， 托架对 写字和头部活动都会带来不便， 看书时一般不能将视线调整到最佳角度； 利用 连在椅子靠背上的束带系在学生肩部或胸部防止上身过分前倾，使用很不方便， 遇到地震火灾等紧急情况更是致命的束缚； 中国专利说明书 CN1210711公幵了 近视防止器， 是在桌上设置一个带有可遮挡其他信号的导向罩的信号接收器， 用于接收戴在学生头上或身上的信号发射器发出的信号， 当坐在凳子上的学生 (下称坐者） 过分低头导致信号接收器接收不到信号时便报警， 这种近视防止 器将设备的一部分戴头上会让坐者感到不适， 过于限制了头部的活动范围， 想 低头拾掉落的书笔或短时离开座位都将报警。 以上产品都或多或少的限制了坐 者某些身体部位的活动自由， 要求学生长时间保持笔挺的姿式， 这样对青少年 的身体发育特别是颈部肌肉的锻练非常不利。
发明内容
本发明要解决的技术问题是提供一种不限制坐者身体任何部位的自由活 动， 当坐者处于上身过分前倾或坐得太靠近凳子前缘的姿态 （下称坐姿不正） 时或持续保持该姿态一段时间之后可发出提醒信号的凳子。
为解决上述技术问题， 本发明的技术方案是： 该凳子由座板、 支架、 压力 测控装置、 提醒装置构成， 座板与用于支撑座板的支架之间采用活动连接， 压 力测控装置可以定性或定量地实时测量坐者对座板的施压位置、 大小等压力信 息， 利用凳子本身的结构或预设置的方式， 确定一个可反映坐姿是否正确的坐 者对座板的临界压力信息， 将实时测量的压力信息或连续时间段内的综合压力 信息与该临界压力信息进行比较， 根据比较结果决定是否使提醒装置动作从而 发出提醒信号， 该提醒信号可以是语音提示、 音乐、 蜂鸣器等声音信号， 也可 以是振动信号， 还可以是灯光信号等。 当坐者上身前倾时， 臀部稍抬起， 大腿 中部压迫凳子前缘， 身体重心前移， 或者臂部向前移动， 都会使座板前缘侧所 受压力增大， 座板后缘侧所受压力相应减小， 座板受压作用点前移， 由此可见， 坐者对座板的压力与坐者坐在凳子上的前后位置及上身前倾程度有关， 通过定 性或定量监测坐者对座板的压力， 可判断坐者是否坐姿正确。
这种凳子不限制坐者的活动， 没有放在桌凳上的有碍活动自由且影响美观 的外露附件； 可允许为了拾掉落物品或看书本上的一些小字如某些注解文字等 正常的弯腰低头， 只是要求坐者不要长时间扒在桌子上或上身过分前倾； 提醒 注意坐姿比被迫保持某个坐姿更有助于培养青少年的自觉性， 也更容易被青少 年接受。
附图说明
下面结合附图和实施方式对本发明作进一步祥细说明。
图 1为本发明第一种实施式的示意图。
图 2为图 1中所示振动器 4的放大图。
图 3为本发明第二种实施式的示意图。
图 4为本发明第三种实施式的示意图。
具体实施方式
图 1示出了本发明的第一种实施方式， 该可提醒注意坐姿的凳子包括座板 1、 支架 2、 压力测控装置、 提醒装置 4， 为简单起见， 在所有说明书附图及摘 要附图中， 各部件剖面线均统一画成金属剖面线。 支架 2为由四条凳腿构成的 架子； 压力测控装置由四个测压器 3、 由处理器、 存储器、 电池、 开关等构成 的电路组成， 其中电路未在图中示出， 开关与电池盒设在座板 1上便于操作但 不碍事的合适位置， 电路其余部分置于座板 1的内部， 四个测压器 3分别位于 座板 1与支架 2的四个接触面之间， 每个测压器 3都相当于一个电子秤， 可实 时测量其受到坐在凳子上的人或放在凳子上的物体的压力， 电路以四个测压器 3所测压力为输入信号， 其输出信号用以控制提醒装置的动作； 如图 2， 提醒装 置 4由振动块 5、 由凸轮 7与从动件 8构成的凸轮机构、 压缩弹簧 6组成， 提 醒装置 4位于座板 1上被坐者大腿压住的某个适当位置的一个凹槽中， 凸轮 7 安装在座板 1 上可绕一固定中心线旋转， 压缩弹簧 6由从动件 8支承， 呈圆杯 状的振动块 5倒放在凹槽中的一个台阶上， 并罩住压縮弹簧 6， 其顶部与座板 1 的表面正好平齐， 压缩弹簧 6处于自由状态， 其上支承面正好与振动块 5接触， 此时， 从动件 8与凸轮 7的接触点到凸轮 7旋转中心线的距离达到最小， 为了 防止当从动件 8与凸轮 7的接触点到凸轮 7旋转中心线的距离不是最小时振动 块 5凸出座板 1表面， 可以考虑安装两个拉伸弹簧 9， 其弹性系数之和小于压 缩弹簧 6的弹性系数， 拉伸弹簧 9的两端分别固定在座板 1和振动块 5上， 将 其稍拉伸从而起到使振动块 5复位的作用。 当凸轮 7绕其旋转中心线转动时， 从动件 8在垂直座板 1表面的方向作住复直线运动， 如振动块 5被坐者太腿压 住而不能充分向上运动时， 从动件 8迫使压缩弹簧 6被压縮， 坐者大腿也可感 觉到振动块 5的振动。 以下称在某一时刻两个位于凳子后腿上的测压装置 3所 测压力之和与两个位于凳子前腿上的测压装置 3所测压力之和的比值为该时刻 的压比， 根据相关标准或实验数据选取一个临界压比， 将某时刻的压比减去临 界压比所得的差值称为该时刻的净压比， 若某时刻的净压比小于 0， 说明坐者 坐姿不正， 否则， 说明坐者坐姿正确。 另外， 预先设置参数 t、 m、 n, 一般取 n m， 从接通电路时刻起， 其处理器每隔时间 t计算一次净压比， 当满足以下两 个条件之一时发出提醒信号， 即凸轮 7按一定转速旋转若干周， 通过从动件 8 的上下住复运动及压縮弹簧 6的作用， 使振动块 5产生振动， 提醒坐者将凳子 前移坐直身体， 一、 从接通电路或其后 n个净压比之和不小于 0的最后一次提 醒之后再经时间 mt的时刻起， 每次计算完净压比都将此前 m个净压比相加， 直至其和小于 0并发出提醒信号； 二、计算每次提醒后的连续 n个净压比之和， 若小于 0， 再次提醒。 显然， 某一时刻的压比精确反映了当时座板 1 受到坐者 压力的作用点位置， 压比越小， 作用点越靠前， 说明坐者坐得越靠前或者上身 前倾越厉害。 由于听课时坐直身体抬头注视黑板， 临界压比应大些， 相比而言， 写作业时上身要稍前倾， 临界压比可以小一些， 因此， 可以预先设置多个 （一 般为 2~3个） 临界压比及其选择键， 每次只可选择其中一个； 可根据具体要求 设计各参数， 如 t=6秒、 m=60、 n=40o 这种电路比较简单， 需要的存储器容量 也不大， 压比与坐者的体重基本无关， 振动提醒非常隐蔽， 不会影响他人及加 重坐者心理压力， 可适应学生在任何场合使用， 坐在靠座板 1后缘的位置可增 加压比， 会促使学生将凳子前移， 这不仅使自己不便也不必要上身过分前倾， 达到养成良好坐姿习惯的目的， 还可避免使凳子靠背紧靠在后面的桌子影响他 人学习。
图 3示出了第二种实施方式， 压力测控装置由轴套 10、 转轴 11、 压缩弹簧 14、 由处理器、 存储器、 电池、 开关、 触点 12、 触点 13等构成的电路组成， 提醒装置为一个蜂鸣器， 轴套 10固定在支架 2上， 基本上处于中间位置， 与轴 套 10相配的转轴 11与座板 1连为一体， （也可将轴套 10与座板相连， 而转轴 11与支架相连）， 以下所指座板 1或支架 2的前、 后侧是以转轴 11的中心线为 基准， 座板 1前侧下表面上的触点 12与支架 2前侧上表面上的触点 13接触是 整个电路接通的必要条件， 其中电路其余部分及蜂鸣器未在图中示出， 开关、 电池盒、 蜂鸣器设在座板 1或支架 2上便于操作但不碍事的合适位置， 由处理 器、 存储器集成的电路板置于座板 1或支架 2的内部。 正常情况下， 座板 1与 支架 2的后侧相互贴合， 且座板 1的上表面处于水平位置， 座板 1的前侧下表 面与支架 2的前侧上表面之间有一个较小张口， 为使座板 1不受压时其后侧与 支架 2贴合， 采取下述措施： 在座板 1与支架 2之间的前缘靠中间处设置一个 有一定预压量但未被压至极限位置的压缩弹簧 14 (也可设置多个有一定预压量 的压缩弹簧， 一般呈平行于转轴 11的直线布置）； 轴套 10固定在支架 2的中间 偏前缘侧的位置， 使座板 1的重心在其后侧。 当坐者坐姿不正时， 座板 1的前 侧上表面所受压力相应增大或作用点前移， 达到一定程度后， 座板 1可相对支 架 2转动， 触点 12与触点 13接触使电路接通， 当电路处于持续接通状态达到 某个设定时间时， 蜂鸣器发出蜂鸣声提醒坐者注意坐姿， 发出提醒信号后， 如 果在原来设定时间或更短的另一设定时间内电路仍一直保持接通状态， 说明坐 者在此期间一直未纠正坐姿， 继续发出蜂鸣声提醒坐者注意坐姿。使触点 12与 触点 13接触所需施加在座板 1上的力对转轴 11中心线的最小矩为临界压力信 息， 取决于座板 1的重力及重心到转轴 11中心线的距离、 压縮弹簧 14的预压 量、 弹性系数及其到转轴 11中心线的距离。 该实施方式的压力测控装置可定性 测量坐者对座板 1 的压力信息， 电路接通则说明坐姿不正， 否则， 说明坐姿正 确， 其电路比第一种实施方式更为简单。
图 4示出了第三种实施方式， 该可提醒注意坐姿的凳子同样包括座板 1、 支架 2、 压力测控装置、 提醒装置。 压力测控装置由轴套 10、 转轴 11、 压縮弹 簧 14组成， 该部分的结构特点与第二种实施方式的相应部分相同， 与第二种实 施方式所述压力测控装置相比， 只是减少了电路部分； 提醒装置由振动块 5、 压缩弹簧 6、 弹簧座 15组成， 在座板 1上被坐者大腿压住的某个适当位置有一 个带台阶的通孔，在支架 2的相应位置有一个凹槽，弹簧座 15的轴切面呈"凸" 形， 放置在支架 2上的凹槽中， 也可将弹簧座 15与支架 2加工成一个整体， 压 缩弹簧 6放在弹簧座 15的台阶上， 振动块 5呈圆杯状， 倒放在座板 1的通孔台 阶上， 并罩住压缩弹簧 6， 其顶部与座板 1的表面正好平齐， 压缩弹簧 6处于 自由状态， 其上支承面正好与振动块 5接触。 当坐者坐姿不正时， 座板 1的前 侧上表面所受压力相应增大或作用点前移， 达到一定程度后， 座板 1相对支架 2转动， 压縮弹簧 6被压缩， 坐者大腿可感受到来自被压缩弹簧 6顶起的振动 块 5的压迫感， 提醒坐者注意坐姿， 纠正坐姿后， 座板 1向后 （逆时钟） 回转， 压迫感自然消失。为了克服座板 1的重力及压缩弹簧 14对座板 1的支撑力使座 板 1转动，就施加在座板 1上的力对转轴 11中心线的最小矩即为临界压力信息。 该实施方式的凳子结构简单， 当坐者姿不正时可实时发出提醒信号， 且坐者坐 得越靠前或上身前倾越厉害， 提醒信号就越强。
显然， 对于前两种实施方式来说， 提醒装置可以互换， 还可采取语音提示、 音乐、 闪烁灯等方式。 对于后两种实施方式来说， 转轴 11与轴套 10的相对转 动不仅与坐者的坐姿有关， 还与坐者体重有关， 根据坐者体重选择适当弹性系 数的压缩弹簧 14; 可通过设置止动装置使转轴 11与轴套 10不能相对转动。

Claims

权 利 要 求 书
1、 一种可提醒注意坐姿的凳子， 它包括座板（1)、 支架 （2)、 压力测控装 置、 提醒装置， 所述支架 （1)用于支撑所述座板 （2)， 其特征在于： 所述座板
(I) 与所述支架 （2) 采用活动连接； 所述压力测控装置用于实时测量坐者对 座板 （1) 的压力信息， 确定一个可反映坐姿是否正确的坐者对所述座板 （1) 的临界压力信息， 将实时测量的压力信息或连续时间段内的综合压力信息与该 临界压力信息进行比较， 根据比较结果判断坐者的坐姿是否正确， 并控制提醒 装置的动作。
2、 按照权利要求 1所述的凳子， 其特征在于： 所述压力测控装置由四个测 压器（3) 与由处理器、 存储器、 电池、 开关等构成的电路组成， 所述四个测压 器 （3) 分别位于所述座板（1) 与所述支架 （2) 的四个接触面之间， 可实时测 量其受到凳子上的物体的压力； 选取一个临界压比及参数 t、 m、 n, 从接通电 路时刻起， 其处理器每隔时间 t计算一次净压比， 当满足以下两个条件之一时 使所述提醒装置发出提醒信号， 一、 从接通电路或其后 n个净压比之和不小于 0的最后一次提醒之后再经时间 mt的时刻起，每次计算完净压比都将此前 m个 净压比相加， 直至其和小于 0并发出提醒信号； 二、 计算每次提醒后的连续 n 个净压比之和， 若小于 0， 再次提醒。
3、 按照权利要求 2所述的凳子， 其特征在于： 在所述电路中预先设定多个 临界压比及其相应的单选键。
4、 按照权利要求 1所述的凳子， 其特征在于： 所述压力测控装置包括轴套 (10)、 转轴 （11)、 由处理器、 存储器、 电池、 开关、 触点 （12)、 触点 （13) 等构成的电路组成， 所述触点 （12)位于所述座板（1)前侧下表面， 所述触点 (13)位于所述支架 （2)前侧上表面的相应位置， 所述触点 （12) 与所述触点 (13) 接触是整个电路接通的必要条件， 所述轴套 （10) 固定在所述座板 （1) 或所述支架 （2)上， 基本上处于中间位置， 与所述轴套（10)相配的所述转轴
(II) 与所述支架 （2) 或所述座板 （1) 连为一体， 采取措施使所述座板 （1) 在不受压的情况下， 所述座板 （1) 与所述支架 （2) 的后侧相互贴合， 所述座 板 （1) 的前侧下表面与所述支架 （2) 的前侧上表面之间有一个较小张口， 所 述座板 （1) 可相对所述支架 （2) 转动使所述触点 （12) 与所述触点 （13) 接 触； 当电路处于持续接通状态达到某个设定时间时， 使所述提醒装置发出提醒 信号， 如果在发出提醒信号后的原设定时间或更短的另一设定时间内， 电路仍 一直保持接通状态， 继续使所述提醒装置发出提醒信号。
5、 按照权利要求 2或 4所述的凳子， 其特征在于： 所述提醒装置由振动块 (5)、 由凸轮 （7) 与从动件 （8) 组成的凸轮机构、 压縮弹簧（6)组成， 安装 在位于所述座板（1)上被坐者大腿压住的某个适当位置的一个凹槽中， 所述凸 轮（7)可绕一固定中心线旋转从而使所述从动件（8)在垂直所述座板（1)表 面的方向作住复直线运动， 所述压缩弹簧 （6) 由从动件 （8) 支承， 振动块 5 放置在凹槽中的一个台阶上并罩住所述压缩弹簧（6)， 所述振动块（5) 的顶部 与所述座板 （1) 的表面平齐， 所述压縮弹簧 （6) 处于自由状态且上支承面正 好与所述振动块（5)接触， 所述从动件（8)与所述凸轮（7)接触点到凸轮（7) 旋转中心线的距离达到最小。
6、 按照权利要求 1所述的凳子， 其特征在于： 所述压力测控装置包括轴套 (10)、 转轴 （11)， 所述轴套 （10) 固定在所述座板 （1) 或所述支架（2) 上， 基本上处于中间位置， 与所述轴套（10)相配的所述转轴（11)与所述支架（2) 或所述座板 （1) 连为一体， 采取措施使所述座板 （1) 在不受压的情况下， 所 述座板 （1) 与所述支架 （2) 的后侧相互贴合， 所述座板（1) 的前侧下表面与 所述支架 （2) 的前侧上表面之间有一个较小张口， 所述座板 （1) 可相对所述 支架 （2)转动； 所述提醒装置由振动块 （5)、 压缩弹簧 （6)、 弹簧座 （15) 组 成， 在所述座板 （1) 上被坐者大腿压住的某个适当位置有一个带台阶的通孔， 所述弹簧座（15)固定在所述支架（2)的相应位置用以支承所述压縮弹簧（6)， 所述振动块（5)放置在所述通孔的台阶上并罩住所述压缩弹簧（6)， 所述振动 块（5) 的顶部与所述座板（1) 的表面平齐， 所述压缩弹簧 （6) 处于自由状态 且上支承面正好与所述振动块 （5) 接触。
7、 按照权利要求 4或 6所述的凳子， 其特征在于： 所述为使座板 （1) 在 不受压时其后侧与支架 （2) 贴合的措施可以是： 在所述座板 （1) 的前侧下表 面与所述支架（2)的前侧上表面之间至少设置一个处于被压缩状态且可被继续 压缩的压縮弹簧 （14)。
8、 按照权利要求 4或 6所述的凳子， 其特征在于： 所述为使座板 （1) 在 不受压时其后侧与支架 （2) 贴合的措施可以是： 使所述座板 （1) 的重心在其 后侧。
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