Three-layer air bag structure special for watch

Abstract

The utility model relates to the technical field of air bags, in particular to a three-layer air bag structure special for a watch, which comprises a first air bag, a second air bag and a third air bag which are sequentially stacked, the first air bag is communicated with the second air bag through a first through hole, the second air bag is communicated with the third air bag through a second through hole, and a first air nozzle is arranged on the first air bag. A first air nozzle is arranged on the first air bag, a second air nozzle is arranged on the second air bag, the first air nozzle is connected with an external air pump for air intake or / and air release, the second air nozzle is connected with an external sensor for pressure detection, and the third air bag is attached to the wrist of a user. According to the utility model, air is fed through the first air nozzle, sequentially passes through the first air bag, the second air bag and the third air bag, finally returns to the second air bag and forms circulating air flow through the second air nozzle, so that the pressure detected by an external sensor is more accurate, and the measurement accuracy and stability of the sensor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air bags, and in particular discloses a three-layer air bag structure special for watches. Background Art

[0002] A watch sphygmomanometer is a medical device that uses modern electronic technology and the principle of indirect blood pressure measurement to measure blood pressure. It is mainly composed of the following components: housing, COB, air pump, deflation valve, pressure sensor, display screen, strap, etc. Most of the home watch sphygmomanometers currently sold on the market use the oscillometric principle to measure blood pressure. The air pump is used to pressurize the strap to block the brachial artery blood flow, during which sound and small pressure pulses are transmitted from the wrist. The instrument obtains air pressure changes through a pressure sensor, and then uses various algorithms to identify the small pulses transmitted from the wrist to the strap, and differentiates them to obtain the blood pressure value.

[0003] The airbag in the existing mainstream watch blood pressure monitor is composed of one or two layers of airbag bag structure, and the air intake and air exhaust share a gas interface, or the two gas interfaces are on the same airbag, and the airbag is a plane instead of the same arc shape as the wrist, and is fixed to the watchband by two clips; when the airbag watch with a gas interface (that is, the air intake port, air exhaust port and sensor detection port all pass through the same gas interface) is worn on the wrist to measure blood pressure, the air intake port, air exhaust port and sensor detection port all pass through the same gas interface. There are many gas interferences. The airbag is a plane shape. When it is fixed on the watchband and worn on the hand, a plane airbag is forcibly changed into an arc shape. The deformation of the airbag will cause a certain error due to the different thickness of the airbag glue. At the same time, the detected data error is large and the parameters are unstable. Another type is that the two gas interfaces are on the same airbag layer bag surface. Although the air intake gas interface and the sensor detection gas interface are separated, there is no arc-shaped wrapping part, and the detected parameters are also unstable. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide an airbag structure which overcomes the influence of the airflow inside the airbag on the detection parameters and has high measurement accuracy.

[0005] To achieve the above purpose, the utility model provides a three-layer airbag structure for watches, including a first airbag, a second airbag, and a third airbag stacked in sequence, wherein the first airbag is connected to the second airbag via a first through hole, the second airbag is connected to the third airbag via a second through hole, a first air nozzle is provided on the first airbag, a second air nozzle is provided on the second airbag, the first air nozzle is connected to an external air pump for air intake and / or air release, the second air nozzle is connected to an external sensor for pressure detection, and the third airbag is used to be attached to the wrist of the user. The utility model takes in air through the first air nozzle, and the gas passes through the first airbag, the second airbag, and the third airbag in sequence, and finally returns to the second airbag to form a circulating airflow through the second air nozzle, so that the pressure detected by the external sensor is more accurate, and the accuracy and stability of the sensor measurement are improved.

[0006] Furthermore, the first airbag, the second airbag, and the third airbag are all configured to be in an arc shape that matches the wrist, so that the entire airbag structure can better adapt to the shape of the human wrist. This design can provide a closer and more fitting contact, increase the sealing between the airbag and the skin, thereby improving the accuracy and stability of the measurement. By maintaining the bending arc, it helps to ensure that the expansion and contraction of the airbag during measurement is uniform, reducing the situation of excessive or insufficient local pressure, thereby effectively improving the accuracy of the measurement results.

[0007] Furthermore, the first airbag, the second airbag, and the third airbag are an integrated structure, a first airbag wall is provided between the first airbag and the second airbag to separate the first airbag and the second airbag, and the first through hole is provided on the first airbag wall; a second airbag wall is provided between the second airbag and the third airbag to separate the second airbag and the third airbag, and the second through hole is provided on the second airbag wall. The provision of the first airbag wall and the second airbag wall can prevent the airbag from having an olive-shaped protrusion or a lateral protrusion when inflating, keep the airbag structure stable and not easy to deform, and keep the airbag in close contact with the wrist, thereby improving the accuracy and stability of the measurement.

[0008] Furthermore, the number of the first through holes is six, and the six first through holes are evenly spaced and distributed on the first airbag wall. During the inflation or deflation process, the evenly spaced first through holes keep the gas flow between the first airbag and the second airbag balanced, avoiding the pressure difference caused by uneven gas distribution, thereby improving the accuracy and stability of the measurement.

[0009] Furthermore, the number of the second through holes is two, and the second through holes are located at an end of the second bag wall away from the second air nozzle. The second through holes are away from the second air nozzle, thereby avoiding the influence of the airflow at the second through holes on the external sensor, making the data detected by the external sensor stable, thereby improving the accuracy of the measurement.

[0010] Furthermore, the first airbag is provided with a fixing pin, which is set on the first airbag through hot pressing. The external strap is provided with a mounting hole that is compatible with the fixing pin. The first airbag is installed on the external strap through the fixing pin, which increases the stability of the airbag during measurement and avoids the expansion and shaking of the airbag during inflation measurement affecting the sensor measurement, thereby improving the accuracy and stability of the measurement; at the same time, hot pressing can form a strong physical connection between the connecting components to ensure that they are firmly fixed on the first airbag, thereby improving the stability and durability of the overall structure and effectively reducing the risk of loosening or falling off of the fixing pin.

[0011] Furthermore, there are two fixing pins, which are respectively located at the two ends of the first airbag, which can simplify the installation and maintenance of the airbag system while ensuring the installation stability of the airbag, and avoid the airbag expansion and shaking during inflation measurement affecting the sensor measurement, thereby improving the accuracy and stability of the measurement.

[0012] Furthermore, the curvature of the first airbag is the same as that of the second airbag and the third airbag. With the same curvature, the pressure in the airbag is evenly distributed during inflation or deflation, avoiding pressure differences caused by uneven gas distribution, thereby improving measurement accuracy and stability.

[0013] Furthermore, the first airbag is provided with a first strip-shaped extension portion, and the first air nozzle is provided on the first extension portion. By providing the first extension portion, the first air nozzle is kept away from the first through hole, thereby avoiding the influence of the intake airflow on the airflow at the first through hole, avoiding the pressure difference caused by uneven gas distribution, and thus improving the accuracy and stability of the measurement.

[0014] Furthermore, the second airbag is provided with a strip-shaped second extension portion, and the second air nozzle is provided on the second extension portion. By providing the second extension portion, the second air nozzle is kept away from the second through hole, thereby avoiding the influence of the airflow at the second through hole on the sensor, thereby improving the accuracy and stability of the measurement.

[0015] The beneficial effects of the utility model are as follows: the utility model takes in air through the first air nozzle, and the gas passes through the first air bag, the second air bag, and the third air bag in sequence, and finally returns to the second air bag to form a circulating airflow through the second air nozzle, so that the pressure detected by the external sensor is more accurate, and the accuracy and stability of the sensor measurement are improved; the first air bag, the second air bag, and the third air bag are all set to an arc shape that matches the wrist, so that the entire air bag structure can better adapt to the shape of the human wrist. This design can provide a closer and more fitting contact, increase the sealing between the air bag and the skin, thereby improving the accuracy and stability of the measurement, and by maintaining the bending arc, it helps to ensure that the expansion and contraction of the air bag during measurement is uniform, reducing the situation of excessive or insufficient local pressure, thereby effectively improving the accuracy of the measurement result; the second through hole is far away from the second air nozzle, avoiding the influence of the airflow at the second through hole on the external sensor, making the data detected by the external sensor stable, thereby improving the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a three-layer airbag structure dedicated to watches of the utility model;

[0017] Figure 2 It is a side view of a three-layer airbag structure dedicated to watches of the utility model;

[0018] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0019] Figure 4 The utility model is a cross-sectional structural schematic diagram of a three-layer airbag structure specially used for watches.

[0020] Reference numerals include:

[0021] 1. First airbag; 2. Second airbag; 3. Third airbag; 4. First through hole; 5. Second through hole; 6. First air nozzle; 7. Second air nozzle; 8. First airbag wall; 9. Second airbag wall; 10. Fixing pin; 11. First extension; 12. Second extension DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] See also Figures 1 to 4As shown, the utility model is a three-layer airbag structure for watches, including a first airbag 1, a second airbag 2, and a third airbag 3 stacked in sequence, wherein the first airbag 1 is connected to the second airbag 2 via a first through hole 4, and the second airbag 2 is connected to the third airbag 3 via a second through hole 5, a first air nozzle 6 is provided on the first airbag 1, and a second air nozzle 7 is provided on the second airbag 2, the first air nozzle 6 is connected to an external air pump for air intake or / and air release, the second air nozzle 7 is connected to an external sensor for pressure detection, and the third airbag 3 is used to be attached to the wrist of the user. The utility model takes in air through the first air nozzle 6, and the gas passes through the first airbag 1, the second airbag 2, and the third airbag 3 in sequence, and finally returns to the second airbag 2 through the second air nozzle 7 to form a circulating airflow, so that the pressure detected by the external sensor is more accurate, and the accuracy and stability of the sensor measurement are improved.

[0024] In this embodiment, the air pump allows gas to enter the first airbag 1 from the first air nozzle 6 on the first airbag 1, and then the gas flows into the second airbag 2 through the first through hole 4, and the gas flows into the third airbag 3 through the second through hole 5 again, causing the third airbag 3 to collide with the wrist, and finally the feedback information is fed back to the gas and transmitted back to the second airbag 2 and through the second air nozzle 7 on the second airbag 2. The second air nozzle 7 is connected to the sensor, and the sensor detects data.

[0025] In a further technical solution, the sensor is a pressure sensing sensor.

[0026] In a further technical solution, the first air nozzle 6 is hot-pressed with the first airbag 1, and the second air nozzle 7 is hot-pressed with the second airbag 2. Hot pressing can form a strong physical connection between the connecting components, ensuring that they are firmly fixed to the first airbag 1 and the second airbag 2, thereby improving the stability and durability of the overall structure and effectively reducing the risk of the first air nozzle 6 and the second air nozzle 7 loosening or falling off.

[0027] The first airbag 1, the second airbag 2, and the third airbag 3 are all arranged in an arc shape that matches the wrist, so that the entire airbag structure can better adapt to the shape of the human wrist. This design can provide a closer and more fitting contact, increase the sealing between the airbag and the skin, thereby improving the accuracy and stability of the measurement. By maintaining the bending arc, it helps to ensure that the expansion and contraction of the airbag during measurement is uniform, reducing the situation of excessive or insufficient local pressure, thereby effectively improving the accuracy of the measurement results.

[0028] The first airbag 1, the second airbag 2, and the third airbag 3 are an integrated structure, a first airbag wall 8 is provided between the first airbag 1 and the second airbag 2, and the first through hole 4 is provided on the first airbag wall 8; a second airbag wall 9 is provided between the second airbag 2 and the third airbag 3, and the second through hole 5 is provided on the second airbag wall 9. The provision of the first airbag wall 8 and the second airbag wall 9 can prevent the airbag from having an olive-shaped protrusion or a lateral protrusion when inflating, keep the airbag structure stable and not easily deformed, and keep the airbag in close contact with the wrist, thereby improving the accuracy and stability of the measurement.

[0029] The number of the first through holes 4 is six, and the six first through holes 4 are evenly spaced and distributed on the first airbag wall 8. During the inflation or deflation process, the evenly spaced first through holes 4 keep the gas flow between the first airbag 1 and the second airbag 2 balanced, avoiding the pressure difference caused by uneven gas distribution, thereby improving the accuracy and stability of the measurement.

[0030] There are two second through holes 5, and the second through holes 5 are located at one end of the second bag wall 9 away from the second air nozzle 7. The second through holes 5 are away from the second air nozzle 7, so that the airflow at the second through holes 5 is prevented from affecting the external sensor, so that the data detected by the external sensor is stable, thereby improving the accuracy of the measurement.

[0031] The first airbag 1 is provided with a fixing pin 10, which is set on the first airbag 1 through hot pressing. A mounting hole compatible with the fixing pin 10 is provided on the external strap. The first airbag 1 is installed on the external strap via the fixing pin 10, which increases the stability of the airbag during measurement and avoids the expansion and shaking of the airbag during inflation measurement affecting the sensor measurement, thereby improving the accuracy and stability of the measurement; at the same time, hot pressing can form a strong physical connection between the connecting components to ensure that they are firmly fixed on the first airbag 1, thereby improving the stability and durability of the overall structure and effectively reducing the risk of the fixing pin 10 loosening or falling off.

[0032] There are two fixing pins 10, which are respectively located at the two ends of the first airbag 1. This can simplify the installation and maintenance of the airbag system while ensuring the installation stability of the airbag, and avoid the airbag expansion shaking during inflation measurement affecting the sensor measurement, thereby improving the accuracy and stability of the measurement.

[0033] In a further technical solution, the two groups of fixing pins 10 are of different sizes, and the two fixing pins 10 of different sizes correspond to different strength and elasticity requirements. The larger fixing pin 10 is located at the end away from the first air nozzle 6 to provide a stronger fixing force, while the smaller pin is located at the end close to the first air nozzle 6 to provide a certain elasticity to adapt to the movement of the wrist.

[0034] The curvature of the first airbag 1 is the same as that of the second airbag 2 and the third airbag 3. With the same curvature, the pressure in the airbag is evenly distributed during inflation or deflation, avoiding pressure differences caused by uneven gas distribution, thereby improving measurement accuracy and stability.

[0035] The first airbag 1 is provided with a first strip-shaped extension portion 11, and the first air nozzle 6 is provided on the first extension portion 11. By providing the first extension portion 11, the first air nozzle 6 is kept away from the first through hole 4, thereby avoiding the influence of the intake airflow on the airflow at the first through hole 4, avoiding the pressure difference caused by uneven gas distribution, and thus improving the accuracy and stability of the measurement.

[0036] The second airbag 2 is provided with a strip-shaped second extension portion 12, and the second air nozzle 7 is provided on the second extension portion 12. By providing the second extension portion 12, the second air nozzle 7 is kept away from the second through hole 5, so as to avoid the influence of the airflow at the second through hole 5 on the sensor, thereby improving the accuracy and stability of the measurement.

[0037] In a further technical solution, the wall thickness of the first airbag 1, the second airbag 2, and the third airbag 3 is 0.15-0.3mm. In this embodiment, the wall thickness of the first airbag 1, the second airbag 2, and the third airbag 3 is 0.2mm, which avoids excessive deformation of the airbag structure due to inflation, thereby improving the accuracy and stability of the measurement.

[0038] In a further technical solution, the first airbag 1, the second airbag 2, and the third airbag 3 are made of TPU.

[0039] In a further technical solution, a plurality of sweat guide grooves are provided on the side of the third airbag 3 that fits the wrist.

[0040] Specifically, the first airbag 1 is installed on the external watchband via the fixing pin 10, and the third airbag 3 is worn close to the wrist. The external air pump allows gas to enter the first airbag 1 from the first air nozzle 6 on the first airbag 1, and then the gas flows into the second airbag 2 through the first through hole 4. The gas flows into the third airbag 3 again through the second through hole 5, and the third airbag 3 is pressed against the wrist. Finally, the feedback information is fed back to the gas and transmitted back to the second airbag 2 and passes through the second air nozzle 7 on the second airbag 2. The second air nozzle 7 is connected to the sensor, and the sensor detects data.

[0041] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A three-layer airbag structure for watches, characterized in that: The invention comprises a first airbag (1), a second airbag (2), and a third airbag (3) which are stacked in sequence, wherein the first airbag (1) is connected to the second airbag (2) via a first through hole (4), and the second airbag (2) is connected to the third airbag (3) via a second through hole (5). The first airbag (1) is provided with a first air nozzle (6), and the second airbag (2) is provided with a second air nozzle (7). The first air nozzle (6) is connected to an external air pump for air intake and / or air release, and the second air nozzle (7) is connected to an external sensor for pressure detection. The third airbag (3) is used to be attached to the wrist of a user. The first airbag (1), the second airbag (2) and the third airbag (3) are all arranged in an arc shape matching the wrist.

2. The three-layer airbag structure for watches according to claim 1, characterized in that: The first airbag (1), the second airbag (2) and the third airbag (3) are of an integrated structure; a first airbag wall (8) is provided between the first airbag (1) and the second airbag (2) to separate the first airbag (1) and the second airbag (2); the first through hole (4) is provided on the first airbag wall (8); a second airbag wall (9) is provided between the second airbag (2) and the third airbag (3) to separate the second airbag (2) and the third airbag (3); the second through hole (5) is provided on the second airbag wall (9).

3. A three-layer airbag structure for watches according to claim 2, characterized in that: The number of the first through holes (4) is six, and the six first through holes (4) are distributed on the first capsule wall (8) at equal intervals.

4. A three-layer airbag structure for watches according to claim 2, characterized in that: The number of the second through holes (5) is two, and the second through holes (5) are located at an end of the second bag wall (9) away from the second air nozzle (7).

5. The three-layer airbag structure for watches according to claim 1, characterized in that: The first airbag (1) is provided with a fixing pin (10), the fixing pin (10) is set on the first airbag (1) by hot pressing, the external strap is provided with a mounting hole matched with the fixing pin (10), and the first airbag (1) is mounted on the external strap via the fixing pin (10).

6. A three-layer airbag structure for watches according to claim 5, characterized in that: The number of the fixing pins (10) is two, and the two fixing pins (10) are respectively located at two ends of the first airbag (1).

7. The three-layer airbag structure for watches according to claim 1, characterized in that: The curvature of the first airbag (1) is the same as the curvature of the second airbag (2) and the curvature of the third airbag (3).

8. The three-layer airbag structure for watches according to claim 1, characterized in that: The first airbag (1) is provided with a strip-shaped first extension portion (11), and the first air nozzle (6) is provided on the first extension portion (11).

9. The three-layer airbag structure for watches according to claim 1, characterized in that: The second air bag (2) is provided with a strip-shaped second extension portion (12), and the second air nozzle (7) is provided on the second extension portion (12).

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