CN109303438B - Pressure reference resetting method and structure of air cushion bed - Google Patents
Pressure reference resetting method and structure of air cushion bed Download PDFInfo
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- CN109303438B CN109303438B CN201710629043.XA CN201710629043A CN109303438B CN 109303438 B CN109303438 B CN 109303438B CN 201710629043 A CN201710629043 A CN 201710629043A CN 109303438 B CN109303438 B CN 109303438B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses or cushions
- A47C27/10—Fluid mattresses or cushions with two or more independently-fillable chambers
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Abstract
The invention relates to a pressure reference resetting method and a structure of an air cushion bed, wherein the air cushion bed comprises at least two air bag strip groups which are arranged at intervals in a staggered way, the front end of the air cushion bed is connected with a valve body, an inflating pump and a central control unit, a pressure sensing assembly in the central control unit is connected with a pressure measuring pipe of the valve body, and an atmosphere communication hole is arranged in the valve body. The valve body of the invention firstly inflates the two groups of air bag strips, and then one air bag strip is used for exhausting air and the other air bag strip is used for blocking air, and meanwhile, through the exhaust state, the atmosphere communication hole is also communicated with the pressure measuring pipe so that the atmosphere communication hole is communicated with the external environment, thus the atmosphere communication hole is communicated with the external environment, the actions of measuring the pressure of the external environment and resetting the reference pressure can be executed, and then the air pump can be carried out according to the reference pressure. Therefore, the pump air pressure of the air cushion bed can be constant and can be measured at any time, and the problems that the human body is not comfortable to lie due to pressure misalignment caused by the influence of the altitude or the temperature difference of a use place can be solved.
Description
Technical Field
The invention relates to a pressure reference resetting method and a pressure reference resetting structure of an air cushion bed, in particular to the technical field that the internal pressure of the air cushion bed can be accurately and constantly reset in real time.
Background
When a patient lies on a bed for a long time, the body weight of the patient is pressed for a long time, and the skin of the patient is in contact with the bed for a long time, so that the bedsore phenomenon of tissue necrosis is caused by poor blood circulation and long-term pressing. In order to avoid bedsore of a patient, the most effective method is to enable the patient to lie for exchanging an air inlet type air cushion bed, a plurality of air bag strip groups capable of exchanging air inlet and air exhaust are distinguished in the exchange type air cushion bed, and a valve body is used for controlling air to be exchanged for air inflation and air deflation, so that the air cushion bed can achieve the alternative and temporary non-contact pressure reduction effect on the body of the patient, and the probability of bedsore occurrence is reduced.
When the existing air cushion bed is used, in order to enable the internal pumping pressure of the air bag strip group to be proper, a pressure measuring pipe is arranged in a valve body and connected with a pressure sensor, and when the pressure sensor detects that the internal pressure of the air bag strip group reaches a set value, pumping is stopped. However, in the existing structure, when the using place is located at a high mountain or different altitudes, the pressure of the ambient air pressure is relatively small compared with that of the flat ground due to the high altitude of the high mountain, and when air is pumped at the pressure value set by the normal flat ground, the air bag strip group often has the problem of over-expansion (compared with the phenomenon that the air bag wrapped by aluminum foil biscuits is expanded when being brought to the high mountain or an airplane), and the human body feels uncomfortable when lying on the bed due to over-hard inflation; or the temperature difference between day and night in some places is very large, the temperature difference also influences the accuracy of the pressure sensor, the air pumping pressure value of the air bag strip group continuously shifts day and night, the air cushion inflation hardness in the early morning, at noon and even at night is inconsistent, and phenomena such as uncomfortable lying of a human body are generated. Because the altitude and the ambient temperature of a use place cannot be predicted when a manufacturer produces and sells products, the altitude and the ambient temperature cannot be correspondingly set in advance, and the problems that the existing products are frequently subjected to discomfort in a user reaction inflation state and the like when the existing products are used in certain high-altitude and high-temperature difference places are caused.
From the above, the existing air cushion bed is still not perfect and needs to be improved. The present invention is developed in view of the above-mentioned problems, and it is an object of the present invention to provide a novel solution to the above-mentioned problems.
Disclosure of Invention
In order to solve the problems that the prior air cushion bed has uncomfortable inflation pressure when used in places with different altitudes and high temperature difference, the invention mainly aims to: the air cushion bed can be provided at a use place, the pressure of the external environment can be measured in real time for a plurality of times a day, even if the temperature difference between day and night at the place is extremely large and can affect the pressure value, the pressure can be reset to zero in real time, and the air is pumped to the correct pressure value which is needed properly. Therefore, the hardness of the air cushion bed on which the human body lies can be proper, constant and accurate, and the air cushion bed is not influenced by environmental pressure, temperature difference and the like, and can effectively avoid the pressure sensor from being lost by temperature difference drift errors.
An important object and advantage of the present invention is: the pressure inside the air bag and the pressure outside the air bag can be detected by using a single pressure sensing assembly; since the unit price of the precise pressure sensing assembly is expensive, the pressure sensing assembly can be additionally arranged for detecting the external environment pressure, but the disadvantage of greatly increasing the cost is generated as a result of the stacked bed frame house. The present invention breaks through this limitation and is really an obvious improvement because the existing pressure sensing component is connected with the inside of the valve body and can not detect the air pressure of the outside atmosphere.
To achieve the above object, the present invention has the following specific structure: the air cushion bed comprises at least two groups of first air bag strip groups and second air bag strip groups which are arranged alternately, the front end of the air cushion bed is connected with a valve body, the valve body is connected with an inflating pump, the inflating pump is connected with a central control unit, a pressure sensing assembly is arranged in the central control unit, and the pressure sensing assembly is connected with a pressure measuring pipe in the valve body. In addition, the valve body structure is provided with a through atmosphere communication hole, and when the external environment air pressure is detected, the pressure measuring pipe is communicated with the atmosphere communication hole.
In order to achieve the above purpose, the specific method of the invention is as follows: the valve body firstly inflates the two groups of air bag strips, one air bag strip is used for exhausting air, the other air bag strip is used for blocking air, and meanwhile, through the exhaust state, the atmosphere communication hole is also communicated with the pressure measuring pipe so that the atmosphere communication hole is communicated with the external environment, the actions of measuring the pressure of the external environment and resetting the reference pressure can be executed, and then air pumping can be carried out according to the reference pressure. Therefore, the pumping pressure of the air cushion bed can be accurately measured at any time, and the problem of discomfort caused by pressure misalignment due to the influence of the altitude or the temperature difference of a use place can be solved.
The air cushion bed comprises at least two groups of first air bag strip groups and second air bag strip groups which are arranged alternately, the front end of the air cushion bed is connected with the valve body, the valve body is connected with the inflating pump, the inflating pump is connected with a central control unit, and the pressure sensing assembly is arranged in the central control unit; when the pressure reference reset is to be executed, at least one of the first airbag strip group and the second airbag strip group is required to be in a state of maintaining air, and the other one is in a state of exhausting air.
Preferably, the valve body is formed by stacking a lower body and an upper body, the lower body is fixed, most of the top structure is a closed surface, and the upper body can rotate relative to the lower body. One or more air inlet pipes are arranged on the side edge of the lower body, and the inner ends of the air inlet pipes are communicated with the center of the top surface of the lower body and are concavely provided with a lower central air chamber; exhaust pipes are arranged beside the air inlet pipes, a first air pipe and a second air pipe are arranged on the corresponding sides of the exhaust pipes, the first air pipe is communicated with a first air chamber on the top surface of the lower body, and the second air pipe is communicated with a second air chamber on the top surface of the lower body; the lower body structure is provided with a piezometer tube. As for the upper body, the bottom surface of the upper body comprises an upper central air chamber positioned on the inner ring and an upper outer ring air chamber positioned on the outer ring, the upper outer ring air chamber is also provided with an upper notch, an independent atmosphere communication hole is arranged in the range of the upper outer ring air chamber, and the atmosphere communication hole can be communicated with the pressure measuring pipe when rotating to a certain angle.
Preferably, the air inlet pipe of the valve body is connected with the inflation pump, the first air delivery pipe is connected with the first air bag strip group, the second air delivery pipe is connected with the second air bag strip group, and the outer end of the pressure measuring pipe is connected with the pressure sensing assembly. The inner end of the exhaust pipe is normally communicated with the upper outer ring air chamber.
Under normal state, the inside of the atmosphere communication hole is blocked by the structure of the top surface of the lower body and does not work, and only when the atmosphere communication hole is communicated with the pressure measuring pipe, the penetrating atmosphere communication hole has the function of being communicated to the outside.
Drawings
FIG. 1 is a block diagram of the present invention.
FIG. 2 is a block diagram illustrating an implementation of the architecture of the present invention.
FIG. 3 is a schematic diagram of the valve body of the present invention for performing air intake for both airbag strips.
FIG. 4 is a schematic diagram of a valve body of the present invention performing a first airbag strip set intake and a second airbag strip set exhaust.
FIG. 5 is a schematic diagram of a valve body performing a first airbag strip bank to block air and a second airbag strip bank to vent air in accordance with the present invention.
FIG. 6 is a schematic diagram of a valve body of the present invention performing a first airbag strip group air dam and a second airbag strip group air intake.
Description of the reference numerals
1 air cushion bed
11 first air bag strip group
12 second airbag strip set
2 valve body
21 lower body
211 air inlet pipe
212 exhaust pipe
213 first air delivery pipe
214 second air delivery conduit
215 lower central air chamber
216 first air chamber
217 second air chamber
218 piezometer tube
22 upper body
221 upper central air chamber
222 upper outer ring air chamber
223 upper notch
224 atmosphere communication hole
3 air pump
4 Central control Unit
41 pressure sensing assembly
Detailed Description
Now, the detailed description of the pressure reference resetting method and structure of the air bed and the resulting effects of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, in the method and structure for resetting the pressure reference of the air cushion bed according to the present invention, the air cushion bed 1 includes at least two first air bag strip groups 11 and second air bag strip groups 12 alternately disposed at intervals, the front end of the air cushion bed 1 is connected to a valve body 2, the valve body 2 is connected to an inflation pump 3, the inflation pump 3 is connected to a central control unit 4, the central control unit 4 is provided with a pressure sensing element 41, and the pressure sensing element 41 is connected to a pressure measuring tube 225 disposed in the valve body 2. The specific method in the implementation of the invention is as follows: the valve body 2 firstly inflates the first airbag strip group 11 and the second airbag strip group 12, and then selects one of the first airbag strip group and the second airbag strip group to exhaust air and the other one to block air (to maintain air inside to support human body), according to the present invention, the inside of the second airbag strip group 12 to be exhausted is in a state of being communicated with the external environment pressure due to the exhaust air, and at the same time, the atmosphere communication hole 224 in the valve body 2 is also communicated with the pressure sensing assembly 41, so that the pressure sensing assembly 41 can detect the external environment pressure according to the exhaust air state, and by completing the external environment pressure measurement and the action of resetting the reference pressure, the external environment pressure at the moment can be known, for example, the external environment pressure at the moment is in a mountain area with high altitude, the atmospheric pressure is relatively flat and pumping is performed according to the reference pressure of the on-site return to zero, so as to obtain the air cushion bed internal pressure value according to the on-site relative pressure.
By implementing the method, the central control unit 4 can control the valve body 2 to measure the external environment pressure on site for multiple times a day so as to accurately provide the most suitable pumping pressure, and the air cushion bed can provide comfortable softness and hardness for a patient to lie due to the influence of the altitude or the temperature difference between day and night.
Referring to fig. 3, a valve body of the air bed with two airbag strip sets according to the present invention is shown, but the valve body structure of the air bed with three airbag strip sets will be different. The valve body 2 is formed by stacking a lower body 21 and an upper body 22, the lower body 21 is fixed, and the upper body 22 can rotate relative to the lower body 21. One or more air inlet pipes 211 are arranged on the side of the lower body 21, and the inner ends of the air inlet pipes 211 are communicated with a lower central air chamber 215 arranged in the center of the top surface of the lower body 21; an exhaust pipe 212 is arranged beside each air inlet pipe 211, a first air delivery pipe 213 and a second air delivery pipe 214 are arranged on the corresponding side of each exhaust pipe 212, the first air delivery pipe 213 is communicated with a first air chamber 216 on the top surface of the lower body 21, and the second air delivery pipe 214 is communicated with a second air chamber 217 on the top surface of the lower body 21; the lower body 21 is provided with a pressure measuring tube 218. The bottom of the upper body 22 includes an upper central air chamber 221 located at the inner ring and an upper outer air chamber 222 located at the outer ring, the upper outer air chamber 222 is further provided with an upper notch 223, and an independent atmosphere communication hole 224 is provided in the range of the upper outer air chamber 222, and the atmosphere communication hole 224 can be rotated to a certain angle to be in communication with the pressure measuring tube 218. The air inlet pipe 211 of the valve body 2 is connected to the inflation pump 3, the first air pipe 213 is connected to the first airbag strip set 11, the second air pipe 214 is connected to the second airbag strip set 12, and the outer end of the pressure measuring pipe 218 is connected to the pressure sensing assembly 41. The inner end of the exhaust pipe 212 is normally connected to the upper outer ring chamber 222.
Referring to FIG. 3, air enters the lower central air chamber 215 through the air inlet pipe 211, passes through the upper central air chamber 221, and then enters the first air chamber 216 and the second air chamber 217, so that the first air delivery pipe 213 and the second air delivery pipe 214 both have air, and the first airbag strip group 11 and the second airbag strip group 12 both have air inlet and are in an inflated state.
After the upper body 22 is rotated by an angle, as shown in fig. 4, since the interior of the second air pipe 214 is communicated with the second air chamber 217, the upper notch 213 and the upper outer annular air chamber 222, and the inner end of the exhaust pipe 212 is communicated with the upper outer annular air chamber 222, the air in the second airbag strip group 12 is exhausted through the exhaust pipe 212; as for the first air bag strip group 11, it is still inflated continuously.
After the upper body 22 is rotated by an angle, as shown in fig. 5, the second air pipe 214 is continuously communicated with the second air chamber 217, the upper notch 213 and the upper outer annular air chamber 222, and the inner end of the exhaust pipe 212 is communicated with the upper outer annular air chamber 222, so that the air in the second airbag strip group 12 is continuously exhausted through the exhaust pipe 212; the first air bag strip set 11 will form the air blocking function (maintain the inflation status) because the inner end of the first air pipe 213 is temporarily closed, and at the same time, because the atmosphere communication hole 224 is in communication with the pressure measuring pipe 218, the pressure sensing assembly 41 connected to the outer end of the pressure measuring pipe 218 can directly detect the external atmosphere relative ambient pressure, so that the central control unit 4 can obtain the ambient pressure on site, and recharge the air after the action of resetting the reference pressure to zero, so as to obtain the ideal pressure value corresponding to the site relative pressure.
After the upper body 22 is rotated by an angle, as shown in fig. 6, air enters the lower central air chamber 215 through the air inlet pipe 211, passes through the upper central air chamber 221 and then enters the second air chamber 217, so that the second air pipe 214 has air, and the second airbag module 12 can enter air to be in an inflated state. Then, when the first airbag strip group 11 is re-inflated after being exhausted by the rotation of the valve body 2, the optimum pressure inflation is performed according to the data after the reset reference pressure is zero.
In summary, the pressure reference resetting method and structure of the air cushion bed according to the present invention can detect the external air pressure in real time at the use location, and adjust the pressure and inflate the air cushion bed after the reset reference pressure is set to zero, so as to ensure that the internal pressure of the air cushion bed is accurate, appropriate and constant. In summary, the present invention has been described in detail by the embodiments and the modifications. It will be understood by those skilled in the art that all embodiments of the present invention are provided herein by way of illustration and not of limitation, i.e., other variations and modifications of the injection device described above are encompassed by the present invention without departing from the true spirit and scope of the invention, which is to be determined by the claims appended hereto.
Claims (4)
1. A pressure reference resetting method of an air cushion bed is characterized in that the air cushion bed is connected with a valve body, the valve body is connected with an inflating pump, the valve body is formed by overlapping a lower body and an upper body, the lower body is fixed, and the upper body can rotate relative to the lower body; one or more air inlet pipes are arranged on the side edge of the lower body, and a lower central air chamber is arranged at the inner end of each air inlet pipe, which is communicated with the center of the top surface of the lower body; exhaust pipes are arranged beside the air inlet pipes, a first air pipe and a second air pipe are arranged on the corresponding sides of the exhaust pipes, the first air pipe is communicated with a first air chamber on the top surface of the lower body, and the second air pipe is communicated with a second air chamber on the top surface of the lower body; a piezometer tube is arranged in the lower body structure; the bottom surface of the upper body is provided with an upper central air chamber positioned on the inner ring and an upper outer ring air chamber positioned on the outer ring, the upper outer ring air chamber is also provided with an upper notch, a penetrating and independent atmosphere communication hole is arranged in the range of the upper outer ring air chamber, and the atmosphere communication hole can be communicated with the pressure measuring pipe when rotating to a certain angle; the pressure measuring pipe is connected with a pressure sensing assembly, and the pressure sensing assembly is used for detecting the pressure inside the air bag and the pressure of the external environment; the atmospheric communication hole is communicated with the pressure measuring pipe, namely the pressure sensing assembly can measure the external actual ambient pressure value through the pressure measuring pipe and the atmospheric communication hole so as to reset the reference pressure to zero, and the inflation pressure in the subsequent air cushion bed can meet the field relative pressure value.
2. The method as claimed in claim 1, wherein the air cushion bed comprises at least two first and second air bag sets alternately arranged, the front end of the air cushion bed is connected to the valve body, the valve body is connected to the pump, the pump is connected to a central control unit, and the pressure sensing assembly is disposed in the central control unit; when the pressure reference reset is to be executed, at least one of the first airbag strip group and the second airbag strip group is required to be in a state of maintaining air, and the other one is in a state of exhausting air.
3. A pressure reference resetting structure of an air cushion bed is characterized in that the air cushion bed comprises at least two groups of first air bag strip groups and second air bag strip groups which are arranged alternately, the front end of the air cushion bed is connected with a valve body, the valve body is connected with an inflation pump, the inflation pump is connected with a central control unit, a pressure sensing assembly is arranged in the central control unit, the pressure sensing assembly is used for detecting the pressure inside an air bag and the external environment pressure, and the pressure sensing assembly is connected with a pressure measuring pipe in the valve body; the valve body is provided with a through atmosphere communication hole, and when the external environment air pressure is detected, the pressure measuring pipe is communicated with the atmosphere communication hole;
the valve body is formed by superposing a lower body and an upper body, the lower body is in a fixed shape, and the upper body can rotate relative to the lower body; one or more air inlet pipes are arranged on the side edge of the lower body, and a lower central air chamber is arranged at the inner end of each air inlet pipe, which is communicated with the center of the top surface of the lower body; exhaust pipes are arranged beside the air inlet pipes, a first air pipe and a second air pipe are arranged on the corresponding sides of the exhaust pipes, the first air pipe is communicated with a first air chamber on the top surface of the lower body, and the second air pipe is communicated with a second air chamber on the top surface of the lower body; the piezometric tube is arranged in the lower body structure; the bottom surface of the upper body comprises an upper central air chamber positioned on the inner ring and an upper outer ring air chamber positioned on the outer ring, the upper outer ring air chamber is also provided with an upper notch, an independent atmosphere communication hole is arranged in the range of the upper outer ring air chamber, and the atmosphere communication hole can be communicated with the pressure measuring pipe when rotating to a certain angle; the inner end of the exhaust pipe is communicated with the upper outer ring air chamber as a normal state.
4. The pressure reference resetting structure of an air cushion bed as claimed in claim 3, wherein the air inlet pipe of the valve body is connected to the inflation pump, the first air delivery pipe is connected to the first air bag strip set, the second air delivery pipe is connected to the second air bag strip set, and the outer end of the pressure measurement pipe is connected to the pressure sensing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710629043.XA CN109303438B (en) | 2017-07-28 | 2017-07-28 | Pressure reference resetting method and structure of air cushion bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710629043.XA CN109303438B (en) | 2017-07-28 | 2017-07-28 | Pressure reference resetting method and structure of air cushion bed |
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| CN109303438A CN109303438A (en) | 2019-02-05 |
| CN109303438B true CN109303438B (en) | 2021-08-17 |
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| CN201710629043.XA Active CN109303438B (en) | 2017-07-28 | 2017-07-28 | Pressure reference resetting method and structure of air cushion bed |
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Citations (2)
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|---|---|---|---|---|
| CN1170491A (en) * | 1994-11-01 | 1998-01-14 | 选慰有限公司 | Improved air control system for air bed |
| CN103945736A (en) * | 2011-11-21 | 2014-07-23 | 八乐梦床业有限公司 | Mattress, pressure sensor calibration method, and bed device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08308888A (en) * | 1995-05-17 | 1996-11-26 | Sanai Fujita | Bedsore preventive device |
| NL1033142C2 (en) * | 2006-05-03 | 2007-11-06 | Pijnloos B V | Mattress. |
| CN101803983B (en) * | 2009-02-13 | 2012-04-11 | 上海电机学院 | Intelligent overturning antidecubitus air mattress |
| CN101545480B (en) * | 2009-05-02 | 2014-10-08 | 先驱塑胶电子（惠州）有限公司 | A pneumatic controller for inflatable products |
| CN202020624U (en) * | 2011-02-21 | 2011-11-02 | 苏州市惠尔康医疗器械有限公司 | Decubitus prevention inflating mattress |
| US10537185B2 (en) * | 2014-03-18 | 2020-01-21 | Dreamwell, Ltd. | Accelerated calibration system for a smart response technology mattress |
| CN105443818B (en) * | 2014-08-21 | 2018-05-15 | 雃博股份有限公司 | Air pressure regulator and the air bed combination with the air pressure regulator |
| CN106176099B (en) * | 2015-05-07 | 2019-01-29 | 唐德工业股份有限公司 | The method of constant height and its air valve structure when making air bed take a breath |
| CN206660042U (en) * | 2016-12-01 | 2017-11-24 | 刘宗熹 | The multi-functional changing device of fluid |
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2017
- 2017-07-28 CN CN201710629043.XA patent/CN109303438B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170491A (en) * | 1994-11-01 | 1998-01-14 | 选慰有限公司 | Improved air control system for air bed |
| CN103945736A (en) * | 2011-11-21 | 2014-07-23 | 八乐梦床业有限公司 | Mattress, pressure sensor calibration method, and bed device |
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