WO2022017294A1 - 用于床的压力传感器 - Google Patents

用于床的压力传感器 Download PDF

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Publication number
WO2022017294A1
WO2022017294A1 PCT/CN2021/106894 CN2021106894W WO2022017294A1 WO 2022017294 A1 WO2022017294 A1 WO 2022017294A1 CN 2021106894 W CN2021106894 W CN 2021106894W WO 2022017294 A1 WO2022017294 A1 WO 2022017294A1
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WO
WIPO (PCT)
Prior art keywords
pressure
circuit board
hole
bottom plate
side cover
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PCT/CN2021/106894
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English (en)
French (fr)
Inventor
彭思炀
蒋憧
丁英锋
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重庆火后草科技有限公司
深圳市生生算法科技有限公司
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Publication of WO2022017294A1 publication Critical patent/WO2022017294A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes

Definitions

  • the present invention relates to a pressure sensor, in particular to a pressure sensor for a bed.
  • Pressure Transducer is a device or device that can sense the pressure signal and convert the pressure signal into a usable output electrical signal according to a certain rule.
  • a pressure sensor is a pressure measuring device with a casing, a sensor body inside the casing, a metal pressure interface and a data line interface.
  • the casing generally adopts a cylindrical metal or plastic airtight casing.
  • the pressure sensor can be used in the field of smart homes, such as beds, etc. In the field of testing the pressure of the bed carrier, the pressure sensor can generally be placed under the mattress, on the bed frame, under the foot of the bed, and so on. In the prior art, the structure of the pressure sensor cushioned on the foot of the bed is relatively common.
  • a cylindrical or square shell is used to seal the sensor body and other devices therein, so that the collection part is in contact with the foot of the bed.
  • This kind of structure is very simple and common. After it is placed on the foot of the bed, the acquisition accuracy of the pressure sensor may not be well improved due to the instability of the center or the position.
  • the technical problem to be solved by the present invention is to provide a pressure sensor for a bed with a simple and ingenious structure and improved acquisition accuracy.
  • a technical solution adopted by the present invention is to provide a pressure sensor for a bed, which is arranged under the foot of the bed and includes a housing, a sensor body arranged in the housing and an A/D circuit board , the housing includes a mounting seat and a pressure-bearing plate arranged on the top of the mounting seat, the mounting seat includes a base and a side cover surrounding the periphery of the base, and the pressure-bearing plate is attached to the sensor On the main body, the horizontal position of the pressure-bearing plate is lower than the horizontal position of the upper end surface of the side cover, and the pressure-bearing plate and the upper end of the side cover form a space for the foot of the bed to be accommodated therein and opposite to the upper end of the side cover.
  • the accommodating limit space of its limit is to provide a pressure sensor for a bed, which is arranged under the foot of the bed and includes a housing, a sensor body arranged in the housing and an A/D circuit board , the housing includes a mounting seat and
  • the sensor of the present invention is used for the bed, the side cover and the base adopt the combination of the insert fit and the thread fit, which increases the combined area of the side cover and the base, and the outer groove wall of the insert groove acts as a water barrier
  • the role of dust it also plays a temporary positioning role during installation, which solves the problem of inconvenient installation caused by the easy sliding of the side cover on the base during installation, greatly reduces the installation time of the side cover, and improves the installation efficiency.
  • the base is designed as a bottom plate, a support column on the bottom plate, and an annular auxiliary limit piece.
  • the support column and the annular auxiliary limit piece can support the foot of the bed.
  • the annular auxiliary limit piece solves the problem that the bed foot is not aligned with the sensor body.
  • the problem of inaccurate measurement caused by the eccentricity caused by the center of the pressure-bearing plate can improve the measurement accuracy of the sensor and provide better measurement data.
  • the design of the position of the pressure-bearing plate and the side cover is ingenious and simple, it plays the role of stabilizing and positioning the bed foot and reducing the eccentric probability of the bed foot.
  • the pressure sensor used for the bed of the present invention is simple in structure, compact in layout, convenient and fast in installation, fast in assembly speed, high in efficiency, and improved in measurement accuracy.
  • FIG. 1 is an installation schematic diagram of a pressure sensor used for a bed of the present invention installed on the foot of the bed.
  • FIG. 2 is a schematic structural diagram of an embodiment of the pressure sensor used in the bed according to the present invention.
  • FIG. 3 is an exploded view of FIG. 2 .
  • FIG. 4 is a schematic structural diagram of the side cover in FIG. 2 .
  • the pressure sensor for the bed (hereinafter referred to as pressure sensor B) of this embodiment is disposed under the bed foot A, and each bed foot A may be provided with a pressure sensor B.
  • the pressure sensor B includes a casing C, a sensor body 41 disposed in the casing C, and an A/D circuit board 42 .
  • the housing C includes a mounting seat 1 and a pressure-bearing plate 2 disposed on the top of the mounting seat 1 .
  • the mounting seat 1 includes a base 11 and a side cover 13 surrounding the periphery of the base 11 .
  • the plate 2 is attached to the sensor body 41 , the horizontal position of the pressure-bearing plate 2 is lower than the horizontal position of the upper end surface of the side cover 13 , and the upper end of the pressure-bearing plate 2 and the side cover 13 An accommodating and limiting space 100 is formed in which the bed foot A is accommodated and limited.
  • the casing C is circular on the projection of the horizontal plane, and the size of the casing C is designed according to the cross-sectional size of the foot A of the bed.
  • the base 11 includes a circular bottom plate 110 , four supporting columns 112 disposed on the circular bottom plate 110 at intervals around the circumference of the circular bottom plate 110 , and an annular auxiliary limiting piece disposed at the top of the supporting column 112 .
  • the side cover 13 is an annular side cover 13 whose shape matches the shape of the circular bottom plate 110 .
  • the four supporting columns 112 form a matrix on the horizontal projection, and are located inside the circular side cover 13 .
  • the lower ends of the four supporting columns 112 can be welded to the upper surface of the circular bottom plate 110 .
  • the annular auxiliary limiting piece 114 can be welded on the four supporting columns 112, or can be threaded, riveted, glued, etc. connected to the four supporting columns 112 .
  • the sensor body 41 and the A/D circuit board 42 are mounted on the circular base plate 110 from top to bottom and are located in the four support columns 112 .
  • the design positions of the first and fourth supporting columns 112 are determined according to the size of the bed foot A, so that the size of the annular auxiliary limiting piece 114 fixed on the upper end of the four supporting columns 112 is consistent with the size of the bed foot.
  • the cross-sectional dimensions of A are matched, and the shape of the pressure-bearing plate 2 corresponds to (substantially the same) the size of the annular auxiliary limiting piece 114 , so that the size of the pressure-bearing plate 2 corresponds to that of the bed foot A, and can fully
  • the pressure from the bed foot A is received, and at the same time, the problems of large accommodating space and poor limiting effect of the bed foot A caused by the oversized shape and size of the pressure-bearing plate 2 are solved.
  • the distance between the left supporting column 112 and the right supporting column 112 is slightly larger than the size of the sensor body 41 and the A/D circuit board 42 .
  • the distance between the two supporting columns 112 matches the size of the sensor body 41 and the A/D circuit board 42 , so that the structure of the sensor body 41 , the A/D circuit board 42 and the four supporting columns 112 is more compact. , so that the size of the pressure sensor B is optimized in the direction of miniaturization under the condition that the size of the pressure sensor B is suitable for the size of the bed foot A. 3.
  • the horizontal position of the sensor body 41 matches the horizontal position of the annular auxiliary limiting piece 114 , so that when the pressure-bearing plate 2 is attached to the sensor body 41 , the bearing
  • the peripheral position of the lower surface of the pressing plate 2 is just placed on the annular auxiliary limit piece 114, and this design solves the following technical problem: when the pressure sensor B is placed under the bed foot A, the bed foot A cannot When it is guaranteed to be 100% on the center of the pressure-bearing plate 2 (that is, there is a deviation between the center of the bed foot A and the center of the pressure-bearing plate 2), the pressure-bearing plate 2 may be inclined, resulting in an error in the sensor body 41 acquisition, which cannot be Collect pressure more efficiently.
  • the annular auxiliary limit piece 114 is used to solve the problem of sensor acquisition error caused by the inclination of the pressure bearing plate 2 due to the annular auxiliary limit piece 114 being located below the edge of the pressure bearing plate 2 when the center of the bed foot A is deviated, which is simple and ingenious.
  • the structure of the sensor can greatly improve the acquisition accuracy of the sensor, provide accurate pressure acquisition values, and provide more accurate acquisition data for subsequent pressure-based applications, laying a solid foundation.
  • the above four supporting columns 112 are only the number used in one of the embodiments of the pressure sensor B. As shown in FIG. In different embodiments, various numbers of support columns 112 can be designed as required, for example, three support columns 112 can be used, and the number of support columns 112 can be directly increased to increase stability.
  • the casing C is not limited to a cylindrical shape, for example, a structure such as a tetrahedron can be used, and the circular bottom plate also changes correspondingly with the shape of the casing C.
  • the pressure sensor B further includes a buffer anti-skid pad 3 disposed on the bottom surface of the base 11 , and the buffer anti-skid pad 3 matches the shape of the circular bottom plate 110 .
  • the lower end of the side cover 13 has an insertion groove 131 fitted with the periphery of the circular bottom plate 110 .
  • the insertion groove 131 is formed by opening upward from the lower end of the side cover 13 .
  • the side cover 13 penetrates through the side cover 13 to communicate with the outside world from the inner direction and below.
  • the groove bottom 131 a of the embedding groove 131 is placed on the upper surface of the circular base plate 110
  • the outer groove wall 131 b of the embedding groove 131 is attached to the outer peripheral surface of the circular base plate 110 . That is, the inserting groove 131 is an L-shaped groove having a groove bottom 131 a and an outer groove wall 131 b , which are directly opened on the side cover 13 .
  • the side cover 13 is installed at the peripheral position of the circular bottom plate 110 through the embedding groove 131 , and the specific installation structure is as follows: a plurality of first screw holes 132 are provided at intervals on the groove bottom 131 a of the embedding groove 131 , A plurality of blind holes 116 are provided on the periphery of the circular bottom plate 110 at positions corresponding to the first screw holes 132 in a one-to-one correspondence, and a plurality of first bolts 118 pass through the corresponding blind holes 116 from bottom to top and then screw locked in the corresponding first screw holes 132 .
  • a sealant is also passed through the joint surface of the insert groove 131 and the circularity plate. Bonding.
  • the pressure-bearing plate 2 is circular, and its outer diameter matches the inner diameter of the side cover 13 .
  • the pressure-bearing plate 2 is just located in the side cover 13 , and the pressure-bearing plate 2 is lower than the upper end surface of the side cover 13 , and the formed accommodating and limiting space 100 just limits the bed foot A.
  • the A/D circuit board 42 includes an A/D circuit board body 421 and a data line interface 422 erected on the A/D circuit board body 421.
  • the A/D circuit board body 421 Each corner of the 421 is provided with a first mounting hole 423 penetrating from its height direction, and a second screw is provided on the circular bottom plate 110 corresponding to the first mounting hole 423 in a one-to-one correspondence.
  • the plurality of second bolts 431 pass downward through the corresponding first mounting holes 423 in a one-to-one correspondence and then are screwed into the corresponding second screw holes 111 .
  • the A/D circuit board 42 is substantially in the shape of a square plate, and the data line interface 422 is disposed on the end portion of the A/D circuit board 42 , below the annular auxiliary limiting piece 114 .
  • An escape notch 1141 is defined at the position below the data line interface 422 of the annular auxiliary stopper 114 to prevent the annular auxiliary stopper 114 from pressing down on the data line interface due to downward pressure. 422, and at the same time can also enhance the elasticity of the annular auxiliary limiting piece 114, which can be described as killing two birds with one stone.
  • a via hole 133 is defined on the side cover 13 at a position corresponding to the data line interface 422 for the data line to pass through to be inserted into the data line interface 422.
  • the shape of the via hole 133 The size matches the shape and size of the data line interface 422 , and the lower end of the via hole 133 penetrates the side cover 13 downward, so that the via hole 133 is a U-shaped hole with an opening downward.
  • an arc-shaped projection 113 is protruded outward at a position corresponding to the via hole 133 on the outer peripheral surface of the circular base plate 110 .
  • the arc length of the arc-shaped bump 113 matches the width of the via hole 133 , the two ends of the arc-shaped bump 113 just touch both sides of the via hole 133 , and the The thickness matches the thickness of the outer groove wall 131b of the insert groove 131, so that when the cover is installed on the circular bottom plate 110, the smoothness of the joint with the arc-shaped protrusion 113, Consistency is very good.
  • At least one first gasket 432 is disposed on the second bolt 431 at a position between the A/D circuit board body 421 and the circular bottom plate 110 .
  • the sheet 432 can elevate the A/D circuit board 42 , and also increase the flexibility of the A/D circuit board 42 to install, and further protect the A/D circuit board 42 .
  • the sensor body 41 has a first central hole 411 penetrating from its height direction, two ends of the sensor body 41 respectively have a second mounting hole 412 penetrating from its height direction, and the A/D circuit board 42
  • the positions corresponding to the two second mounting holes 412 are respectively provided with a third mounting hole 424 penetrating from its height direction, and a third mounting hole 424 is provided on the circular bottom plate 110 corresponding to the second mounting holes 412
  • the screw holes 115 and the two third bolts 119 respectively pass through the two second installation holes 412 and the two third installation holes 424 and then screw into the third screw holes 115 .
  • the first central hole 411 is a threaded hole
  • the center of the bearing plate 2 has a second central hole 21 penetrating from the height direction thereof, and a fourth bolt 121 penetrating from top to bottom After passing through the second central hole 21 , it is threaded with the first central hole 411 .
  • the A/D circuit board 42 is installed on the circular base plate 110 through the first installation holes 423, the second screw holes 111 and the second bolts 431; secondly, through the second installation holes 412, the third The mounting hole 424 , the third screw hole 115 , and the third bolt 119 , the sensor body 41 is installed on the circular base plate 110 after passing through the A/D circuit board 42 .
  • a first center hole 411 is set in the center of 41, and a second center hole 21 coaxial with the first center hole 411 is set on the pressure-bearing plate 2.
  • the fourth The bolts 121 pass through the second central hole 21 and are fixed in the first central hole 411 to prevent the pressure bearing plate 2 from being eccentrically mounted on the sensor body 41 and ensure the detection accuracy of the sensor body 41 .
  • the first central hole 411 is a through hole
  • the center of the pressure bearing plate 2 has a second central hole 21 penetrating from the height direction thereof
  • the A/D circuit board body 421 A third center hole 425 with a larger diameter than the first center hole 411 and the second center hole 21 is opened at the position corresponding to the first center hole 411 , and the circular bottom plate 110 corresponds to the third center hole 425
  • the positions of the three central holes 425 are provided with matching fourth central holes 117 , and a fourth bolt 121 passes through the second central hole 21 from top to bottom and is connected to the locking nut 122 .
  • the diameter of the third central hole 425 and the fourth central hole 117 is larger than that of the first central hole 411 and the second central hole 21 , which facilitates the disassembly and assembly of the locking nut 122 .
  • At least one second gasket 120 is disposed on the third bolt 119 at a position between the sensor body 41 and the A/D circuit board body 421 .
  • the second spacer 120 can adjust the height between the sensor bodies 41, and can also physically isolate the sensor body 41 and the A/D circuit board 42, so as to prevent the sensor body 41 from contacting the A/D circuit board 41 under pressure.
  • the circuit boards 42 are rigidly in conflict, and at the same time, the flexibility can be increased.
  • the sensor body 41 installs the sensor body 41 on the circular base plate 110 : place the sensor body 41 above the A/D circuit board 42 , and make the second mounting hole 412 and the third mounting hole 412 The holes 424 are aligned, and the third bolt 119 is screwed into the third screw hole 115 through the second mounting hole 412 , the second washer 120 and the third mounting hole 424 downward in sequence. Then, the pressure-bearing plate 2 is installed on the sensor body 41: the pressure-bearing plate 2 is placed above the sensor body 41, and the second center hole 21 and the first center hole are connected.
  • the outer groove wall 131 b of the inserting groove 131 is placed on the outer peripheral surface of the circular bottom plate 110 , and the blind hole 116 is aligned with the first screw hole 132 According to the standard, the first bolts 118 are screwed into the first screw holes 132 after passing through the corresponding blind holes 116 from bottom to top.
  • the sensor of the present invention is used for the bed, between the side cover 13 and the base 11, the combination of the insert groove 131 and the thread fit is used to increase the bonding area of the side cover 13 and the base 11.
  • the outer groove of the insert groove 131 The wall 131b plays the role of blocking water and dust, and also plays a temporary positioning role during installation, which solves the problem of inconvenient installation caused by the easy sliding of the side cover 13 on the base 11 during installation, and greatly reduces the damage of the side cover 13.
  • the installation time is improved, and the installation efficiency is improved.
  • the base 11 is designed as a bottom plate, a support column 112 arranged on the bottom plate, and an annular auxiliary limit piece 114.
  • the support column 112 and the annular auxiliary limit piece 114 can play a supporting role on the bed foot A, and the annular auxiliary limit piece 114 solves the problem.
  • the problem of inaccurate measurement caused by the eccentricity caused when the bed foot A is not aligned with the center of the sensor body 41 and the pressure-bearing plate 2 improves the measurement accuracy of the sensor and provides better measurement data.
  • the design of the position of the pressure bearing plate 2 and the side cover 13 is ingenious and simple, it plays a role of stabilizing and positioning the bed foot A and reducing the eccentric probability of the bed foot A.
  • the pressure sensor used for the bed of the present invention is simple in structure, compact in layout, convenient and quick in installation, fast in assembly speed, high in efficiency, and improved in measurement accuracy.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

一种用于床的压力传感器（B），包括壳体（C）、设于壳体（C）内的传感器本体（41）以及A/D电路板（42），壳体（C）包括安装座（1）以及设于安装座（1）顶部的承压板（2），安装座（1）包括底座（11）以及围设于底座（11）周缘的侧罩（13），承压板（2）贴设于传感器本体（41）上，承压板（2）所在的水平位置低于侧罩（13）的上端面的水平位置，承压板（2）与侧罩（13）的上端形成一供床脚（A）容置于其中且对其限位的容置限位空间（100）。底座（11）包括一底板（110）、绕底板（110）周缘间隔设置于底板（110）上的支撑立柱（112）以及设于支撑立柱（112）顶端的环形辅助限位片（114），传感器本体（41）以及A/D电路板（42）由上至下依次固定于底板（110）上且位于环形辅助限位片（114）中，承压板（2）的下表面的周缘置于环形辅助限位片（114）上。

Description

用于床的压力传感器 技术领域
本发明涉及一种压力传感器，特别涉及一种用于床的压力传感器。
背景技术
压力传感器(Pressure Transducer)是能感受压力信号，并能按照一定的规律将压力信号转换成可用的输出的电信号的器件或装置。压力传感器是一种具有壳体、设于壳体内的传感器本体、金属压力接口以及数据线接口的压力测量装置，壳体一般采用圆柱形金属或塑料密闭外壳。压力传感器可用于智能家居领域，例如床等等，在用于测试床上载体的压力领域中，压力传感器一般可置于床垫下、床架上、垫于床脚下等等。现有的技术中，垫于床脚的压力传感器的结构比较普通，一般采用圆柱形或者四方形壳体将传感器本体等器件封于其中，使采集部与床脚相接触。这种结构非常简单常见，在垫于床脚上后，可能会由于中心不稳或位置的原因，导致压力传感器的采集精度一直无法得到很好的提升。
发明内容
针对上述现有技术的不足，本发明所要解决的技术问题是：提供了一种结构简单巧妙、提高采集精度的用于床的压力传感器。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种用于床的压力传感器，设置于床脚下方，包括壳体、设于所述壳体内的传感器本体以及A/D电路板，所述壳体包括安装座以及设于所述安装座顶部的承压板，所述安装座包括底座以及围设于所述底座周缘的侧罩，所述承压板贴设于所述传感器本体上，所述承压板所在的水平位置低于所述侧罩的上端面的水平位置，所述承压板与所述侧罩的上端形成一供所述床脚容置于其中且对其限位的容置限位空间。
本发明用于床的传感器，侧罩和底座之间采用嵌槽嵌入配合和螺纹配合相结合的方式，增加了侧罩与所述底座的结合面积，嵌槽的外侧槽壁起到挡水挡尘的作用，在安装时还起到临时定位作用，解决安装时侧罩在底座上易滑动而导致的安装不方便的问题，极大地减少了侧罩的安装时间，提升了安装效率。底座设计为底板、设于底板上的支撑立柱以及环形辅助限位片，支撑立柱和环形辅助限位片能够起到对床脚的支撑作用，环形辅助限位片解决床脚未对准传感器本体和承压板中心时产生的偏心而导致的测量不精准的问题，提高传感器测量精准度，提供更佳的测量数据。承压板与所述侧罩的位置的设计虽巧妙简单，但却起到了稳固、定位床脚、减少床脚偏心机率的作用。相较于传统的压力传感器， 本发明用于床的压力传感器结构简单、布局紧凑、安装方便快捷、组装速度快、效率高、提高测量精准度。
附图说明
图1是本发明用于床的压力传感器安装于床脚的安装示意图。
图2是本发明用于床的压力传感器一实施例的结构示意图。
图3是图2的拆分图。
图4是图2中侧罩的结构示意图。
具体实施方式
请参见图1至图4，本实施例的用于床的压力传感器(以下简称压力传感器B)设置于床脚A下方，每一个床脚A均可配有一个压力传感器B。所述压力传感器B包括壳体C、设于所述壳体C内的传感器本体41以及A/D电路板42。所述壳体C包括安装座1以及设于所述安装座1顶部的承压板2，所述安装座1包括底座11以及围设于所述底座11周缘的侧罩13，所述承压板2贴设于所述传感器本体41上，所述承压板2所在的水平位置低于所述侧罩13的上端面的水平位置，所述承压板2与所述侧罩13的上端形成一供所述床脚A容置于其中且对其限位的容置限位空间100。
本实施例中，所述壳体C在水平面的投影上呈圆形，所述壳体C的大小尺寸根据床脚A截面大小而设计。所述底座11包括一圆形底板110、绕所述圆形底板110周缘间隔设置于所述圆形底板110上的四根支撑立柱112以及设于所述支撑立柱112顶端的环形辅助限位片114。所述侧罩13为形状与所述圆形底板110形状相匹配的圆环形侧罩13。所述四根支撑立柱112在水平投影上呈一矩阵，且位于所述圆环形侧罩13的内侧，所述四根支撑立柱112的下端可以焊接于所述圆形底板110的上表面，也可以采用铆接、螺纹连接等方式固定于所述圆形底板110的上表面，所述环形辅助限位片114可以焊接于所述四根支撑立112柱上，也可以螺纹连接、铆接、粘接于所述四根支撑立柱112上。所述传感器本体41和A/D电路板42由上至下的安装于所述圆形底板110上且位于四根支撑立柱112中。本方案中：第一、四根支撑立柱112的设计位置根据床脚A的尺寸而定，以使得固定于所述四根支撑立柱112上端的环形辅助限位片114的尺寸与所述床脚A的截面尺寸相匹配，而承压板2的形状与所述环形辅助限位片114的尺寸相对应(基本上相一致)，这样使得承压板2的尺寸与床脚A相应，能够全面接收床脚A传来的压力，同时解决了承压板2形状尺寸过大而带来的床脚A容置空间大、限位效果差的问题。第二、四根支撑立柱112中，左侧支撑立柱112与右侧支撑立柱112之间的距离略大于所述传感器本体41及A/D电路 板42的尺寸，前排支撑立柱112与后排两根支撑立柱112之间的距离与所述传感器本体41及A/D电路板42的尺寸相匹配，这样，使得传感器本体41、A/D电路板42和四根支撑立柱112的结构更紧凑，使得所述压力传感器B的尺寸在适合床脚A尺寸的情况下，向更小化方向优化。三、所述传感器本体41所在的水平位置与所述环形辅助限位片114所在的水平位置相匹配，这样，当所述承压板2贴设于所述传感器本体41上时，所述承压板2的下表面的周缘位置正好置于所述环形辅助限位片114上，这样设计解决了以下技术问题：在将压力传感器B置于所述床脚A下时，床脚A由于不能保证100％位于承压板2的正中心上(即床脚A的中心与承压板2的中心有偏差)时，导致承压板2可能会产生倾斜，导致传感器本体41采集有误差，不能更有效的采集到压力。采用环形辅助限位片114解决了床脚A中心有偏差时，由于环形辅助限位片114位于承压板2的边缘下方，解决承压板2倾斜而导致的传感器采集误差问题，简单而巧妙的结构即能够极大地提升传感器采集精度，提供了精确的压力采集数值，为后续的基于压力的应用提供更精确的采集数据，奠定了坚实的基础。
可理解的，以上四根支撑立柱112仅为所述压力传感器B的其中一种实施例所采用的数量。在不同的实施例中，可以根据需要设计各种数量的支撑立柱112，例如可以采用三根支撑立柱112，为了增加稳定性，还可以直接增加支撑立柱112的数量。所述壳体C也并不限于圆柱形，例如可以采用四方体等结构，圆形底板也随着壳体C形状作相应变化。
作为优选的，所述压力传感器B还包括设于所述底座11的底面的缓冲防滑垫3，所述缓冲防滑垫3与所述圆形底板110的形状相匹配。
所述侧罩13的下端具有一与所述圆形底板110周缘嵌合的嵌槽131，所述嵌槽131由所述侧罩13的下端向上开设而成，所述嵌槽131从内侧方向贯穿所述侧罩13以从内侧方向和下方与外界连通，所述嵌槽131的槽底131a至嵌槽131的外侧槽壁131b的下端面的平行距离与所述圆形底板110的高度相匹配，所述嵌槽131的槽底131a置于所述圆形底板110的上表面，所述嵌槽131的外侧槽壁131b贴于所述圆形底板110的外周面。也即，所述嵌槽131为L形槽，具有一个槽底131a以及一外侧槽壁131b，直接在所述侧罩13上开设而成。所述侧罩13通过所述嵌槽131安装在所述圆形底板110的周缘位置处，具体安装结构如下：在所述嵌槽131的槽底131a上间隔设置有若干第一螺孔132，在所述圆形底板110周缘上相应于所述第一螺孔132的位置处一一对应地设置有若干盲孔116，若干第一螺栓118由下至上的穿过对应的盲孔116后螺锁于对应的第一螺孔132中。为了增强所述圆形底板110与所述侧罩13的密封性能，防止水从底部进入所述壳体C内，在所述 嵌槽131与所述圆形度板的结合面还通过密封胶进行粘接。
所述承压板2呈圆形，其外径与所述侧罩13的内径相匹配，当所述承压板2压于所述传感器本体41及环形辅助限位片114上时，所述承压板2正好位于所述侧罩13内，且所述承压板2低于所述侧罩13的上端面，形成的容置限位空间100正好对所述床脚A进行限位。
本实施例中，所述A/D电路板42包括一A/D电路板本体421以及立设于所述A/D电路板本体421的一端数据线接口422，所述A/D电路板本体421的各边角处均设置有从其高度方向贯穿的第一安装孔423，在所述圆形底板110上相应于所述第一安装孔423的位置处一一对应地设置有第二螺孔111，若干第二螺栓431一一对应地向下穿过对应的第一安装孔423后螺锁于对应的第二螺孔111中。所述A/D电路板42大致呈四方形板状，所述数据线接口422设于所述A/D电路板42的端头部分，位于所述环形辅助限位片114的下方。所述环形辅助限位片114位于所述数据线接口422下方的位置处开设有一避让缺口1141，防止因向下的压力而使得所述环形辅助限位片114向下压住所述数据线接口422，同时还可以增强所述环形辅助限位片114的弹性，可谓一举两得。
本实施例中，所述侧罩13上相应于所述数据线接口422的位置处开设有一供数据线穿过以插入所述数据线接口422中的过孔133，所述过孔133的形状尺寸与所述数据线接口422的形状尺寸相匹配，所述过孔133的下端向下贯穿所述侧罩13，从而使得所述过孔133呈开口向下的U形孔。为了使得所述圆形底板110与所述侧罩13的整体性、一致性、结构布局更紧密，增加用户触感，使得所述过孔133处的圆形本体外周与所述侧罩13的过渡性更好，在所述圆形底板110的外周面上相应于所述过孔133的位置处向外凸设有一弧形凸块113。所述弧形凸块113的弧长与所述过孔133宽度相匹配，所述弧形凸块113的两端正好抵于所述过孔133的两侧，所述弧形凸块113的厚度与所述嵌槽131的外侧槽壁131b的厚度相匹配，这样，当所述外罩安装于所述圆形底板110上后，与所述弧形凸块113的衔接处的顺滑度、一致性均非常好。
本实施例中，在所述第二螺栓431上位于所述A/D电路板本体421与所述圆形底板110之间的位置处设置有至少一第一垫片432，所述第一垫片432可以抬高所述A/D电路板42，还起到增加所述A/D电路板42安装柔韧度，进一步保护所述A/D电路板42。
所述传感器本体41具有一从其高度方向贯穿的第一中心孔411，所述传感器本体41的两端分别具有一从其高度方向贯穿的第二安装孔412，所述A/D电路板42上相应于两第二安装孔412的位置处分别设置有一从其高度方向贯穿的第三安装孔424，所述圆形底板 110上相应于所述第二安装孔412的位置处设置有第三螺孔115，两第三螺栓119分别穿过两第二安装孔412、两第三安装孔424后螺锁于第三螺孔115中。本实施例中，所述第一中心孔411为螺纹孔，所述承压板2的中心具有一从其高度方向上贯穿的第二中心孔21，一第四螺栓121由上至下的穿过所述第二中心孔21后与所述第一中心孔411螺纹配合。采用这种安装方式，首先，A/D电路板42通过第一安装孔423、第二螺孔111、第二螺栓431安装于圆形底板110上；其次，通过第二安装孔412、第三安装孔424、第三螺孔115、第三螺栓119，将所述传感器本体41透过所述A/D电路板42后安装于所述圆形底板110上，在固定所述传感器本体41的同时，还加强了A/D电路板42的定位和固定，同时使得传感器本体41和A/D电路板42重叠安装在底板上，使得结构更紧凑、布局更紧密；最后，在所述传感器本体41的中心设置第一中心孔411，同时在所述承压板2上设置与所述第一中心孔411同轴的第二中心孔21，在安装所述承压板2时，将第四螺栓121穿过所述第二中心孔21后固定于所述第一中心孔411中，防止承压板2偏心安装于所述传感器本体41上，确保传感器本体41检测的精度。
在其他实施例中，所述第一中心孔411为通孔，所述承压板2的中心具有一从其高度方向上贯穿的第二中心孔21，在所述A/D电路板本体421上相应于所述第一中心孔411的位置处开设有一直径大于所述第一中心孔411和第二中心孔21的第三中心孔425，在所述圆形底板110上相应于所述第三中心孔425的位置开设有相匹配的第四中心孔117，一第四螺栓121由上至下的穿过所述第二中心孔21后与锁紧螺母122连接。第三中心孔425和第四中心孔117直径大于第一中心孔411和第二中心孔21，这样便于锁紧螺母122的拆装。
本实施例中，在所述第三螺栓119上位于所述传感器本体41与所述A/D电路板本体421之间的位置处设置有至少一第二垫片120。所述第二垫片120能够调节所述传感器本体41之间的高度，还能够物理隔离所述传感器本体41和A/D电路板42，防止传感器本体41在受到压力后与所述A/D电路板42硬性相抵触，同时还可以增加柔韧度。
本发明用于床的压力传感器B，在组装时，首先将所述A/D电路板42螺锁于所述圆形底板110上：将A/D电路板42置于所述圆形底板110上方，并使所述第一安装孔423与所述第二螺孔111对准，将第二螺栓431由上至下的穿过对应的第一安装孔423以及第一垫片432后螺锁于所述第二螺孔111中。然后将所述传感器本体41安装于所述圆形底板110上：将所述传感器本体41置于所述A/D电路板42上方，并使所述第二安装孔412与所述第三安装孔424对准，将第三螺栓119向下依次穿过所述第二安装孔412、第二垫片 120以及第三安装孔424后螺锁于所述第三螺孔115中。而后使所述承压板2安装于所述传感器本体41上：将所述承压板2置于所述传感器本体41的上方，并使所述第二中心孔21与所述第一中心孔411对准，将所述第四螺栓121穿过所述第二中心孔21后与所述第一中心孔411连接，从而使所述承压板2贴设于所述传感器本体41上。最后将所述侧罩13安装于所述圆形底板110上：将所述侧罩13底端的嵌槽131置于所述圆形底板110边缘部分，即使所述嵌槽131的槽底131a置于所述圆形底板110的上表面，使所述嵌槽131的外侧槽壁131b置于所述圆形底板110的外周面，并使所述盲孔116与所述第一螺孔132对准，将所述第一螺栓118由下至上的穿过对应的盲孔116后螺锁于所述第一螺孔132中。
本发明用于床的传感器，侧罩13和底座11之间采用嵌槽131嵌入配合和螺纹配合相结合的方式，增加了侧罩13与所述底座11的结合面积，嵌槽131的外侧槽壁131b起到挡水挡尘的作用，在安装时还起到临时定位作用，解决安装时侧罩13在底座11上易滑动而导致的安装不方便的问题，极大地减少了侧罩13的安装时间，提升了安装效率。底座11设计为底板、设于底板上的支撑立柱112以及环形辅助限位片114，支撑立柱112和环形辅助限位片114能够起到对床脚A的支撑作用，环形辅助限位片114解决床脚A未对准传感器本体41和承压板2中心时产生的偏心而导致的测量不精准的问题，提高传感器测量精准度，提供更佳的测量数据。承压板2与所述侧罩13的位置的设计虽巧妙简单，但却起到了稳固、定位床脚A、减少床脚A偏心机率的作用。相较于传统的压力传感器，本发明用于床的压力传感器结构简单、布局紧凑、安装方便快捷、组装速度快、效率高、提高测量精准度。

Claims (10)

  1. 一种用于床的压力传感器，设置于床脚下方，包括壳体、设于所述壳体内的传感器本体以及A/D电路板，其特征在于：所述壳体包括安装座以及设于所述安装座顶部的承压板，所述安装座包括底座以及围设于所述底座周缘的侧罩，所述承压板贴设于所述传感器本体上，所述承压板所在的水平位置低于所述侧罩的上端面的水平位置，所述承压板与所述侧罩的上端形成一供所述床脚容置于其中且对其限位的容置限位空间。
  2. 如权利要求1所述的用于床的压力传感器，其特征在于：所述底座包括一底板、绕所述底板周缘间隔设置于所述底板上的支撑立柱以及设于所述支撑立柱顶端的环形辅助限位片，所述支撑立柱位于所述侧罩内，所述传感器本体以及A/D电路板由上至下的依次固定于所述底板上且位于所述环形辅助限位片中，所述承压板的下表面的周缘置于所述环形辅助限位片上。
  3. 如权利要求2所述的用于床的压力传感器，其特征在于：所述侧罩的下端具有一与所述底板周缘嵌合的嵌槽，所述嵌槽由所述侧罩的下端向上开设而成，所述嵌槽从内侧方向贯穿所述侧罩以从内侧方向和下方与外界连通，所述嵌槽的槽底至嵌槽的外侧槽壁的下端面的平行距离与所述底板的高度相匹配，所述嵌槽的槽底置于所述底板的上表面，所述嵌槽的外侧槽壁贴于所述底板的外周面。
  4. 如权利要求3所述的用于床的压力传感器，其特征在于：在所述嵌槽的槽底上间隔设置有若干第一螺孔，在所述底板周缘上相应于所述第一螺孔的位置处一一对应地设置有若干盲孔，若干第一螺栓由下至上的穿过对应的盲孔后螺锁于对应的第一螺孔中。
  5. 如权利要求2至4中任一项所述的用于床的压力传感器，其特征在于：所述A/D电路板包括一A/D电路板本体以及立设于所述A/D电路板本体的一端数据线接口，所述A/D电路板本体的各边角处均设置有从其高度方向贯穿的第一安装孔，在所述底板上相应于所述第一安装孔的位置处一一对应地设置有第二螺孔，若干第二螺栓一一对应地向下穿过对应的第一安装孔后螺锁于对应的第二螺孔中。
  6. 如权利要求5所述的用于床的压力传感器，其特征在于：在所述第二螺栓上位于所述A/D电路板本体与所述底板之间的位置处设置有至少一第一垫片。
  7. 如权利要求5所述的用于床的压力传感器，其特征在于：所述传感器本体具有一从其高度方向贯穿的第一中心孔，所述传感器本体的两端分别具有一从其高度方向贯穿的第二安装孔，所述A/D电路板上相应于两第二安装孔的位置处分别设置有一从其高度方向贯穿的第三安装孔，所述底板上相应于所述第二安装孔的位置处设置有第三螺孔，两第三螺栓分别穿过两第二安装孔、两第三安装孔后螺锁于第三螺孔中。
  8. 如权利要求5所述的用于床的压力传感器，其特征在于：在所述第三螺栓上位于所述传感器本体与所述A/D电路板本体之间的位置处设置有至少一第二垫片。
  9. 如权利要求7所述的用于床的压力传感器，其特征在于：所述第一中心孔为螺纹孔，所述承压板的中心具有一从其高度方向上贯穿的第二中心孔，一第四螺栓由上至下的穿过所述第二中心孔后与所述第一中心孔螺纹配合。
  10. 如权利要求7所述的用于床的压力传感器，其特征在于：所述第一中心孔为通孔，所述承压板的中心具有一从其高度方向上贯穿的第二中心孔，在所述A/D电路板本体上相应于所述第一中心孔的位置处开设有一直径大于所述第一中心孔和第二中心孔的第三中心孔，在所述底板上相应于所述第三中心孔的位置开设有相匹配的第四中心孔，一第四螺栓由上至下的穿过所述第二中心孔后与锁紧螺母连接。
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