Gas circuit structure and electronic sphygmomanometer

Abstract

The utility model provides an air path structure and an electronic sphygmomanometer. The electronic sphygmomanometer comprises the air path structure. The gas circuit structure comprises a first shell, a second shell and an elastic structure. When the gas storage structure is deflated, a user can connect the gas storage structure to the exhaust port of the gas path structure, and gas in the gas storage structure can enter the first gas chamber through the exhaust port and is discharged from the first gas chamber through the gas discharge port in the first shell. In the process that gas in the first gas chamber is discharged, gas does not enter the gas inlet hole any more, the elastic structure does not elastically deform towards the first shell, the gas discharging hole is not blocked by the elastic structure, and the elastic structure does not communicate the vent hole with the second gas chamber through elastic deformation. Thus, the second shell can be always kept in the state of blocking the vent hole in the gas release process, the problem that gas in the first gas chamber is prone to leaking from the vent hole to the second gas chamber when being released is solved, and then the gas release effect of the gas path structure on the gas storage structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and more specifically, relates to an air path structure and an electronic sphygmomanometer. Background Art

[0002] After using an electronic blood pressure monitor to measure blood pressure, users typically need to release the compressed gas from a gas storage structure, such as a cuff or wristband. An electronic blood pressure monitor may include a blood pressure detection component, a gas storage structure, an air circuit structure, and an air pump structure. The air circuit structure connects the air pump structure and the gas storage structure to control the inflation and deflation of the gas storage structure by the air pump structure.

[0003] Specifically, the air path structure may include an upper cover, an elastic member and a lower shell, wherein the upper cover and the elastic member are enclosed to form a first air chamber, and the lower shell and the elastic member are enclosed to form a second air chamber. The upper cover is provided with an air discharge hole and an exhaust hole, the lower shell is provided with an air inlet hole, and the elastic member is provided with an air vent connecting the first air chamber and the second air chamber. During inflation, the gas generated by the air pump structure can enter from the air inlet hole, pass through the second air chamber and the air vent hole into the first air chamber, and then be discharged from the exhaust hole into the gas storage structure; during deflation, the air pump structure no longer inflates toward the second air chamber, and the gas in the gas storage structure enters the first air chamber through the exhaust port, and then leaks out from the air discharge hole on the upper cover. However, the gas in the first air chamber is prone to leak from the air vent hole to the second air chamber when leaking, thereby making the deflation effect of the air path structure poor. Utility Model Content

[0004] The purpose of the embodiments of the present utility model is to provide an air path structure and an electronic sphygmomanometer to solve the technical problem of poor air release effect of the air path structure in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a gas path structure is provided, comprising:

[0007] The first shell is provided with exhaust holes and air leakage holes distributed at intervals;

[0008] The second shell is provided with an air inlet hole;

[0009] An elastic structure is arranged between the first shell and the second shell, and is enclosed with the first shell to form a first air chamber, and is enclosed with the second shell to form a second air chamber; the exhaust hole and the air leakage hole are both connected to the first air chamber, and the air intake hole is connected to the second air chamber; the elastic structure is provided with an air vent, which is connected to the first air chamber, and the second shell blocks the air vent; the elastic structure is used to elastically deform toward the first shell when air is taken in by the air intake hole, so as to block the air leakage hole and connect the air vent and the second air chamber.

[0010] In some embodiments, the elastic structure includes a first elastic member and a second elastic member, the first elastic member is elastically connected to the outer periphery of the second elastic member, and the first elastic member is provided with the vent, and the second elastic member is spaced apart from the vent; the first elastic member, the second elastic member and the first shell are arranged to form the first air chamber, and the first elastic member, the second elastic member and the second shell are arranged to form the second air chamber; along the through direction of the vent, the second elastic member protrudes from the first elastic member toward the first shell, and is arranged opposite to the air leakage hole; the second elastic member is used to elastically deform toward the first shell when air is taken in by the air inlet, so as to block the air leakage hole; the first elastic member is used to elastically deform toward the first shell when air is taken in by the air inlet, so as to connect the vent and the second air chamber.

[0011] In some embodiments, the second elastic member is an airbag.

[0012] In some embodiments, the first elastic member includes a first main body and a first movable member, the first main body is elastically connected to the outer periphery of the second elastic member; the vent is provided on the first main body, the first movable member is connected to the first main body, and is at least partially located in the vent; the second air chamber is provided with an opening, the first movable member blocks the opening to isolate the second air chamber and the vent; the first movable member is used to elastically move relative to the first elastic member when air is taken in by the air inlet, so as to open the opening so that the second air chamber and the vent are connected.

[0013] In some embodiments, along the through direction of the vent, the second shell is provided with a first protrusion protruding toward the vent, the first protrusion blocks the vent and is spaced apart from the air inlet; the second air chamber includes a first groove provided on the first protrusion, the first groove is connected to the air inlet; the opening is provided at one end of the first groove facing the first movable part, and the first movable part is used to elastically move away from the first protrusion when air is taken into the air inlet to open the opening.

[0014] In some embodiments, the first elastic member includes a second main body and a second movable member, the second main body is elastically connected to the outer periphery of the second elastic member, and is elastically connected to the outer periphery of the second movable member; the second movable member is provided with the vent hole through it, and the second shell is provided with a second protrusion protruding toward the second movable member; the second protrusion blocks the vent hole to isolate the second air chamber and the vent hole from each other; the second movable member is used to elastically move away from the second protrusion when air is taken in by the air inlet hole, so that the vent hole is connected to the second air chamber.

[0015] In some embodiments, the second main body portion is spaced around the outer circumference of the second protrusion, and the second main body portion, the second protrusion and the second movable member together form a second groove, and the second groove is connected to the second air chamber; the second movable member is used to elastically move away from the second protrusion when air is taken in by the air inlet hole, so that the air vent is connected to the second groove.

[0016] In some embodiments, the air path structure further includes a positioning member provided on the second protruding column, and the positioning member passes through the vent hole.

[0017] In some embodiments, the second air chamber includes a first air cavity and an air guide cavity connected to the first air cavity, the first air cavity is arranged between the second elastic member and the second shell; along the distribution direction of the second elastic member and the air vent, the air guide cavity is arranged between the first air cavity and the air vent; the air guide cavity is used to be connected to the air vent when air is taken in by the air inlet; the air inlet is connected to the first air cavity and / or the air guide cavity.

[0018] In the second aspect, an electronic blood pressure monitor is provided. The electronic blood pressure monitor according to the embodiment of the second aspect of the present application includes an air storage structure, an air pump structure, a blood pressure detection component and the air pressure path structure of the embodiment of the first aspect of the present application. The air storage structure is connected to the exhaust hole, the air pump structure is connected to the air inlet hole, and the blood pressure detection component is electrically connected to the air pump structure and is used to measure the air pressure changes in the air storage structure.

[0019] The beneficial effects of the air path structure and electronic sphygmomanometer provided in the embodiments of the present application are:

[0020] The air path structure provided in the embodiment of the present application is such that when the air storage structure is deflated, the user can connect the air storage structure to the exhaust port of the air path structure, so that the gas in the air storage structure can enter the first air chamber through the exhaust port and leak out of the first air chamber through the exhaust port on the first shell. During the process of gas leakage in the first air chamber, the air inlet hole no longer takes in air, and the elastic structure will not elastically deform toward the first shell, so that the elastic structure will not block the air leakage hole, nor will it connect the air vent and the second air chamber through elastic deformation. In this way, the second shell can always remain in a state of blocking the air vent during the deflation process, thereby improving the problem that the gas in the first air chamber is easily leaked from the air vent to the second air chamber when leaking, thereby improving the deflation effect of the air path structure on the air storage structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0022] Figure 1 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0023] Figure 2 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure. Figure 1 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0024] Figure 3 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure. Figure 1 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0025] Figure 4 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure. Figure 1 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0026] Figure 5 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0027] Figure 6 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure. Figure 5 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0028] Figure 7 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure. Figure 6 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0029] Figure 8 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0030] Figure 9 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure. Figure 8 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0031] Figure 10 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure. Figure 9 The three-dimensional structural schematic diagram of the gas path structure provided by the present application is shown in the figure.

[0032] In the figure, various reference signs:

[0033] 10-first shell; 11-exhaust hole; 12-air leakage hole; 20-second shell; 21-air inlet hole; 22-first boss; 23-second boss; 24-positioning member; 30-elastic structure; 31-first elastic member; 311-first main body; 312-first movable member; 313-second main body; 314-second movable member; 32-vent; 33-second elastic member; 331-opening; 40-first air chamber; 50-second air chamber; 51-first air cavity; 52-air guide cavity; 53-first groove; 531-opening; 60-second groove. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0035] Unless otherwise specified, all implementations and optional implementations of the embodiments of the present application can be combined with each other to form a new technical solution.

[0036] Unless otherwise specified, all technical features and optional technical features of the embodiments of the present application can be combined with each other to form a new technical solution.

[0037] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0039] In the description of this application, "a plurality of" means more than two, and unless otherwise specifically defined, "more than two" includes two. Accordingly, "a plurality of groups" means more than two groups, including two groups.

[0040] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0041] In this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, in this application, the character " / " generally indicates that the related objects are in an "or" relationship.

[0042] The following is a detailed description with reference to the accompanying drawings and embodiments:

[0043] See also Figure 1 The embodiments of the present application provide an air path structure for controlling the direction of airflow. For example, when the air path structure is applied to an electronic blood pressure monitor, the air path structure can be connected to the air pump structure and air storage structure of the electronic blood pressure monitor to enable the air pump structure to inflate the air storage structure through the air path structure, and to deflate the air storage structure through the air path structure. Furthermore, the air path structure can also be applied to other equipment such as dryers and energy storage devices.

[0044] Please also refer to Figures 1 to 8 , this embodiment provides an air path structure. The air path structure includes a first shell 10, a second shell 20 and an elastic structure 30. The first shell 10 is provided with exhaust holes 11 and air leakage holes 12 distributed at intervals. The second shell 20 is provided with an air inlet 21. The elastic structure 30 is arranged between the first shell 10 and the second shell 20. The elastic structure 30 and the first shell 10 enclose a first air chamber 40. The elastic structure 30 and the second shell 20 also enclose a second air chamber 50. The exhaust holes 11 and the air leakage holes 12 are both connected to the first air chamber 40. The air inlet 21 is connected to the second air chamber 50. The elastic structure 30 is provided with an air vent 32, and the air vent 32 is connected to the first air chamber 40. The second shell 20 blocks the air vent 32. When air is taken in by the air inlet 21, the elastic structure 30 is used to elastically deform toward the first shell 10 to block the air leakage hole 12 and connect the air vent 32 with the second air chamber 50.

[0045] like Figure 1 As shown, the shapes of the first shell 10 and the second shell 20 can be roughly circular. Of course, the shapes of the first shell 10 and the second shell 20 can also be roughly rectangular, fan-shaped, etc. Other shapes are not limited here.

[0046] The elastic structure 30 is made of elastic materials such as rubber material, nylon material, etc. Other materials with elastic properties are within the scope of consideration of this embodiment.

[0047] The exhaust hole 11 is primarily used to connect to an external air storage structure, while the air release hole 12 is connected to the atmosphere. The air inlet 21 is used to connect to an external air pump structure. When the external air pump structure is operating, the second air chamber 50 can continuously draw air from the air inlet 21. When the external air pump structure is not operating, the second air chamber 50 stops drawing air from the air inlet 21.

[0048] When air is released through the air path structure, the air storage structure is connected to the exhaust hole 11, and the air flow enters the first air chamber 40 through the exhaust hole 11. At this time, the elastic structure 30 is in a reset state, that is, a state with almost no elastic deformation. The outer periphery of the vent hole 32 of the elastic structure 30 can abut against the second shell 20, so that the second shell 20 can completely cover the vent hole 32, and the vent hole 32 can be blocked by the second shell 20. Since the vent hole 12 is connected to the first air chamber 40, the gas in the first air chamber 40 is discharged through the vent hole 12, thereby achieving the deflation operation of the air storage structure. It can be understood that when the first air chamber 40 is deflated, the gas pressure in the first air chamber 40 is greater than the gas pressure in the second air chamber 50, so that the elastic structure 30 has a tendency to move toward the second shell 20 under the action of the gas pressure, and fits tightly with the second shell 20, thereby improving the air tightness at the vent hole 32.

[0049] When air is taken in through the vent 32, the air pump structure can fill gas toward the air inlet 21, and the gas pressure in the second air chamber 50 increases, and the elastic structure 30 can be elastically deformed toward the first air chamber 40 under the action of the air pressure. The portion of the elastic structure 30 that abuts against the second shell 20 is separated from the second shell 20 to form a gap, so that the vent 32 and the second air chamber 50 are connected through the above gap. In this way, the gas entering the air inlet 21 can pass through the second air chamber 50 and enter the first air chamber 40 from the vent 32. At the same time, a portion of the elastic structure 30 that is spaced apart from the vent 32 can also be elastically deformed under the action of the airflow, and block the air leakage hole 12, so that as much gas as possible in the first air chamber 40 flows out from the exhaust hole 11. Since the gas storage structure is connected to the exhaust hole 11, the gas discharged from the exhaust hole 11 can inflate the gas storage structure.

[0050] The air path structure provided in the embodiment of the present application allows the user to connect the air storage structure to the exhaust port of the air path structure when the air storage structure is deflated. The gas in the air storage structure can then enter the first air chamber 40 through the exhaust port and be discharged from the first air chamber 40 through the exhaust port on the first shell 10. During the process of gas leakage in the first air chamber 40, the air inlet 21 no longer takes in air, and the elastic structure 30 will not elastically deform toward the first shell 10, so that the elastic structure 30 will not block the air leakage hole 12, nor will it connect the vent 32 with the second air chamber 50 through elastic deformation. In this way, the second shell 20 can always remain in a state of blocking the vent 32 during the deflation process, thereby improving the problem that the gas in the first air chamber 40 is easily leaked from the vent 32 to the second air chamber 50 during the deflation process, thereby improving the deflation effect of the air path structure on the air storage structure.

[0051] In some embodiments, see Figures 1 to 4 The elastic structure 30 includes a first elastic member 31 and a second elastic member 33. The first elastic member 31 is elastically connected to the outer periphery of the second elastic member 33. The first elastic member 31 is provided with a vent hole 32. The second elastic member 33 is spaced apart from the vent hole 32. The first elastic member 31, the second elastic member 33 and the first shell 10 are arranged to form a first air chamber 40. The first elastic member 31, the second elastic member 33 and the second shell 20 are arranged to form a second air chamber 50. Along the through direction of the vent hole 32, the second elastic member 33 protrudes from the first elastic member 31 toward the first shell 10. The second elastic member 33 is arranged opposite to the air leakage hole 12. The second elastic member 33 is used to elastically deform toward the first shell 10 when air is introduced into the air inlet hole 21, so as to block the air leakage hole 12. The first elastic member 31 is used to elastically deform toward the first shell 10 when air is introduced into the air inlet hole 21, so as to connect the vent hole 32 and the second air chamber 50.

[0052] The first elastic member 31 is connected to the outer periphery of the second elastic member 33 , and the first elastic member 31 is configured to be elastically deformable relative to the connection portion between the first elastic member 31 and the second elastic member 33 .

[0053] In one possible design, the first elastic member 31 may be a sheet-like structure, and the thickness direction of the first elastic member 31 is parallel to the distribution direction of the first shell 10 and the second shell 20. The second elastic member 33 may be a convex columnar structure.

[0054] The second elastic member 33 protrudes from the first elastic member 31 toward the first shell 10 , which means that along the through direction of the vent hole 32 , the second elastic member 33 is configured as a protruding structure closer to the first shell 10 than the first elastic member 31 .

[0055] At least a portion of the second elastic member 33 can completely cover the air leakage hole 12 when deformed, and abut against the first shell 10 around the outer periphery of the air leakage hole 12 , so that the air leakage hole 12 is blocked by the second elastic member 33 .

[0056] Specifically, the second elastic member 33 is arranged relative to the air leakage hole 12, which means that along the through direction of the air leakage hole 32, the projection of the second elastic member 33 can completely cover the air leakage hole 12, so that the second elastic member 33 can completely block the air leakage hole 12 when it is deformed and abuts against the first shell 10.

[0057] As an example, Figure 4 As shown, when air is admitted through the air inlet 21, the second elastic member 33 elastically deforms toward the first shell 10 to block the air leakage hole 12. The first elastic member 31 elastically deforms toward the first shell 10, and a gap is formed between the first elastic member 31 and the second shell 20 due to the elastic deformation of the first elastic member 31, so that the second air chamber 50 and the air vent 32 are indirectly connected through the gap. When air is deflated, the air inlet 21 no longer admits air, and the second elastic member 33 elastically resets in a direction away from the first shell 10 to open the air leakage hole 12. The first elastic member 31 elastically resets in a direction away from the first shell 10, and the first elastic member 31 and the second shell 20 abut against each other due to the elastic reset of the first elastic member 31, so that the gap between the second air chamber 50 and the air vent 32 is closed, and the second shell 20 re-blocks the air vent 32.

[0058] In this way, the second elastic member 33 blocks the vent hole 12 during air intake, making it difficult for gas to be discharged from the vent hole 12 during inflation. Instead, as much gas as possible is discharged from the exhaust hole 11, thereby improving the efficiency of inflating the external gas storage structure. The vent hole 32 on the first elastic member 31 is blocked by the second shell 20 during deflation, improving the problem of gas in the first air chamber 40 easily leaking from the vent hole 32 into the second air chamber 50 during deflation, thereby improving the deflation effect of the gas path structure on the gas storage structure.

[0059] In some embodiments, see Figure 2 , the second elastic member 33 is an airbag.

[0060] The airbag is convexly arranged toward the air leakage hole 12 , and an opening 331 for accommodating gas is provided on a side of the airbag facing the second shell 20 .

[0061] Specifically, the airbag inflates and expands to block the air leakage hole 12 when the air pressure in the second air chamber 50 is greater than the air pressure in the first air chamber 40 , and deflates and detaches from the air leakage hole 12 when the air pressure in the second air chamber 50 is less than the air pressure in the first air chamber 40 .

[0062] In this way, the second elastic member 33 more tightly blocks the vent hole 12, thereby improving the airtightness between the second elastic member 33 and the vent hole 12. At the same time, the airbag deflates quickly. During the transition from the inflated state to the deflated state, the airbag can quickly deform and move away from the vent hole 12, thereby facilitating the rapid escape of gas from the first air chamber 40 through the vent hole 12 and improving the deflation efficiency and speed.

[0063] In some embodiments, see Figures 5 to 7 The first elastic member 31 includes a first main body portion 311 and a first movable member 312. The first main body portion 311 is elastically connected to the outer periphery of the second elastic member 33. The vent 32 is provided on the first main body portion 311. The first movable member 312 is connected to the first main body portion 311. The first movable member 312 is at least partially located in the vent 32. The second air chamber 50 is provided with an opening 531. The first movable member 312 blocks the opening 531 to isolate the second air chamber 50 from the vent 32. The first movable member 312 is used to elastically move relative to the first elastic member 31 when air is taken in by the air inlet 21, so as to open the opening 531 so that the second air chamber 50 and the vent 32 are in communication.

[0064] The first body 311 , the first movable member 312 , the second elastic member 33 and the first housing 10 together form a first air chamber 40 . The first body 311 , the first movable member 312 , the second elastic member 33 and the second housing 20 together form a second air chamber 50 .

[0065] As an example, the first body portion 311 may be a sheet-like structure, and a thickness direction of the first body portion 311 is parallel to a distribution direction of the first shell 10 and the second shell 20 .

[0066] The first body portion 311 is connected to the outer periphery of the second elastic member 33 , and the first body portion 311 is configured to be elastically deformable relative to a connection portion with the second elastic member 33 .

[0067] The first movable member 312 may be configured to be integrally formed with the first main body 311. Alternatively, the first movable member 312 may be configured to be separately connected to the first main body 311 by bonding, clamping, or the like.

[0068] The first movable member 312 may be entirely located within the vent hole 32, or may be partially located within the vent hole 32 and partially located outside the vent hole 32. The portion of the first movable member 312 located within the vent hole 32 may be connected to the inner peripheral wall of the vent hole 32.

[0069] In one possible design, along the distribution direction of the first air chamber 40 and the second air chamber 50, the thickness of the portion of the first movable member 312 located in the vent hole 32 can be thinner than the thickness of the first main body 311. In this way, when subjected to the air pressure in the second air chamber 50, the first movable member 312 is more likely to elastically deform and return to its original position relative to the first main body 311.

[0070] When air flows from the air inlet 21 toward the second air chamber 50, the first movable member 312 can be moved away from the second housing 20 by the air flow to open the opening 531. When air does not flow from the air inlet 21 toward the second air chamber 50, the first movable member 312 can elastically return to rest against the second housing 20 to block the opening 531.

[0071] The elastic movement of the first movable member 312 may be movement, rotation, bending, etc. relative to the first main body portion 311 .

[0072] In this way, the first movable part 312 can automatically reset itself through elastic force without being affected by airflow, which is beneficial for the first movable part 312 to better cover the opening 531 when deflated. There is no need to additionally set up other structures for driving the first movable part 312 to seal the opening 531, which simplifies the overall structure of the elastic structure 30 and reduces the processing difficulty.

[0073] In some embodiments, see Figures 5 to 7 , along the through direction of the vent hole 32, the second shell 20 is provided with a first protrusion 22 protruding toward the vent hole 32. The first protrusion 22 blocks the vent hole 32. The first protrusion 22 is spaced apart from the air inlet 21. The second air chamber 50 includes a first groove 53. The first groove 53 is provided on the first protrusion 22. The first groove 53 is connected to the air inlet 21. An opening 531 is provided at one end of the first groove 53 facing the first movable part 312. When air is taken in by the air inlet 21, the first movable part 312 elastically moves away from the first protrusion 22 to open the opening 531.

[0074] It is understandable that the second housing 20 includes a housing body and a first protrusion 22. The first protrusion 22 is provided on a side of the housing body facing the vent 32. The first body portion 311, the first movable member 312, the second elastic member 33 and the housing body together form a second air chamber 50.

[0075] The first protrusion 22 blocks the vent 32. When the gas in the first air chamber 40 is deflated, the airflow in the first air chamber 40 flows to the vent 32, exerting a certain pressure on the first movable member 312, causing the first movable member 312 to abut against the first protrusion 22, and the first movable member 312 can then block the opening 531. In this way, it is difficult for the airflow in the first air chamber 40 to flow out of the opening 531 to the second air chamber 50, thereby ensuring the airtightness of the vent 32. When air enters the vent 32, the first movable member 312 can elastically deform toward the first shell 10, thereby moving away from the first protrusion 22 and opening 531, so that the vent 32 is connected to the opening 531.

[0076] The first movable member 312 blocks or opens the opening 531 to connect or isolate the air inlet 21 from the second air chamber 50, resulting in a simple structure and easy processing. Furthermore, the airtightness between the first movable member 312 and the first protrusion 22 is improved, thereby alleviating the problem of gas in the first air chamber 40 easily leaking from the vent 32 into the second air chamber 50 during release. This further enhances the air path structure's ability to release gas from the external gas storage structure.

[0077] It can be understood that the second air chamber 50 further includes a first air cavity 51 , the first air cavity 51 is communicated with the first groove 53 , and the air inlet 21 is communicated with at least one of the first air cavity 51 and the first groove 53 .

[0078] In some embodiments, see Figures 8 to 10 The first elastic member 31 includes a second main body portion 313 and a second movable member 314. The second main body portion 313 is elastically connected to the outer periphery of the second elastic member 33. The second main body portion 313 is also elastically connected to the outer periphery of the second movable member 314. The second movable member 314 is provided with a vent 32 therethrough. The second shell 20 is provided with a second protrusion 23 protruding toward the second movable member 314. The second protrusion 23 blocks the vent 32 to isolate the second air chamber 50 and the vent 32 from each other. The second movable member 314 is used to elastically move away from the second protrusion 23 when air is taken in by the air inlet 21, so that the vent 32 is connected to the second air chamber 50.

[0079] The second body 313 , the second movable member 314 , the second elastic member 33 and the first housing 10 together form a first air chamber 40 . The second body 313 , the second movable member 314 , the second elastic member 33 and the second housing 20 together form a second air chamber 50 .

[0080] The second body portion 313 is connected to the outer periphery of the second elastic member 33 , and the second body portion 313 is configured to be elastically deformable relative to a connection portion with the second elastic member 33 .

[0081] When air flows from the air inlet 21 toward the second air chamber 50, the second movable member 314 elastically moves away from the second protrusion 23 under the action of the air flow, creating a gap between the second movable member 314 and the second protrusion 23, thereby connecting the air vent 32 with the second air chamber 50. When air does not flow from the air inlet 21 toward the second air chamber 50, the movable member elastically returns to rest against the second protrusion 23, causing the second protrusion 23 to block the air vent 32.

[0082] It is understood that, along the through-going direction of the vent hole 32, the projection of the second protrusion 23 covers the projection of the vent hole 32. Thus, when the air is deflated, the second protrusion 23 can completely block the vent hole 32, thereby improving the problem of gas in the first air chamber 40 leaking into the second air chamber 50 through the vent hole 32.

[0083] During deflation, air in the first air chamber 40 flows to the vent hole 32, exerting a certain pressure on the second movable member 314, causing it to abut against the second protrusion 23. This prevents air in the first air chamber 40 from flowing out of the vent hole 32 to the second air chamber 50, thus ensuring airtightness at the vent hole 32. When air enters the vent hole 32, the second movable member 314 elastically deforms away from the first air chamber 40. Due to the structure of the second movable member 314 around the vent hole 32, this elastic deformation creates a gap between the second protrusion 23 and the vent hole 32, allowing communication between the vent hole 32 and the second air chamber 50.

[0084] The elastic movement of the second movable member 314 allows for sealing and opening the vent hole 32, resulting in a simple structure and easy processing. Furthermore, the airtightness between the second movable member 314 and the second protrusion 23 is improved, thereby improving the problem of gas in the first air chamber 40 easily leaking through the vent hole 32 into the second air chamber 50 during release. This further enhances the air path structure's ability to deflate the gas storage structure.

[0085] In some embodiments, see Figures 8 to 10 The second body portion 313 is spaced apart and surrounds the outer periphery of the second protrusion 23. The second body portion 313, the second protrusion 23, and the second movable member 314 together form a second groove 60. The second groove 60 is connected to the second air chamber 50. When air is admitted through the air inlet 21, the second movable member 314 is configured to elastically move away from the second protrusion 23, thereby connecting the air vent 32 to the second groove 60.

[0086] Specifically, the inner circumferential wall of the second body portion 313 facing the second protrusion 23, the side wall of the second movable member 314 facing the second protrusion 23, and the outer circumferential wall of the second protrusion 23 together form the second groove 60. The second groove 60 opens toward the second air chamber 50 to communicate with the second air chamber 50.

[0087] When air is taken in by the air inlet 21, the second movable part 314 elastically moves away from the second protrusion 23, and a gap is formed between the mutually abutting parts of the second movable part 314 and the second protrusion 23, so that the air vent 32 is connected with the second groove 60 through the above gap, and then the air vent 32 is indirectly connected with the second air chamber 50 through the second groove 60.

[0088] In this way, when air is taken in by the air inlet hole 21, the second movable part 314 can connect the air vent 32 with the second groove 60 after elastic deformation, and the second groove 60 is connected with the second air chamber 50. The indirect conduction of the airflow through the second groove 60 increases the conduction area between the air vent 32 and the second air chamber 50, thereby improving the air intake efficiency of the second air chamber 50 toward the first air chamber 40.

[0089] In some embodiments, see Figure 8 The air path structure further includes a positioning member 24 , which is disposed on the second protrusion 23 . The positioning member 24 passes through the vent hole 32 .

[0090] In one possible design, see Figure 8 The positioning member 24 can be a columnar structure fixedly connected to the second protrusion 23, and the diameter of the positioning member 24 is smaller than the diameter of the second protrusion 23. The positioning member 24 is used to pass through the vent hole 32, and along the through direction of the vent hole 32, the projection of the second protrusion 23 completely covers the projection of the positioning member 24.

[0091] The provision of the positioning post facilitates quick installation of the second housing 20 and the elastic structure 30, improving installation efficiency. Furthermore, the provision of the positioning member 24 ensures that the relative positions of the second boss 23 and the vent 32 are aligned, preventing them from deviating from each other. This, in turn, alleviates the problem of the vent 32 deviating from the second boss 23, which could cause gas in the first air chamber 40 to leak into the second air chamber 50 during deflation.

[0092] In some embodiments, see Figures 4 to 10 The second air chamber 50 includes a first air cavity 51 and an air guide cavity 52, which is connected to the first air cavity 51. The first air cavity 51 is provided between the second elastic member 33 and the second housing 20. Along the distribution direction of the second elastic member 33 and the vent holes 32, the air guide cavity 52 is provided between the first air cavity 51 and the vent holes 32. The air guide cavity 52 is configured to connect to the vent holes 32 when air is admitted through the air inlet 21. The air inlet 21 is connected to at least one of the first air cavity 51 and the air guide cavity 52.

[0093] The first air cavity 51 is provided between the second elastic member 33 and the second shell 20 , which means that the first air cavity 51 is located in a space formed by the second elastic member 33 and the second shell 20 along the distribution direction of the first shell 10 and the second shell 20 .

[0094] The extension direction of the air guide cavity 52 may be a straight extension from the air inlet hole 21 toward the first air cavity 51 , or may be a curved extension from the air inlet hole 21 toward the first air cavity 51 , which is not limited here.

[0095] The air guide cavity 52 is used to connect to the vent hole 32 when air is taken in through the air inlet hole 21. Figure 4 As shown, when air is taken in, the first elastic member 31 is deformed toward the first shell 10, so that a gap is formed between the first elastic member 31 and the second shell 20. Then, the vent hole 32 is connected to the second air chamber 50 through the gap, and further connected to the air guide cavity 52. ​​When the second air chamber 50 includes the first groove 53, as shown in FIG. Figure 7 As shown, the air guide cavity 52 is connected between the first air cavity 51 and the first groove 53, so that the air guide cavity 52 is indirectly connected to the vent hole 32 through the first groove 53. When the air path structure is provided with the second groove 60, as shown in FIG. Figure 10 As shown, the air guiding cavity 52 is connected between the first air cavity 51 and the second groove 60 , so that the air guiding cavity 52 and the vent hole 32 are indirectly connected through the second groove 60 .

[0096] By providing the air guide cavity 52, the gas entering from the air inlet 21 can flow quickly into the first air cavity 51, allowing the second elastic member 33 to quickly deform under the action of the airflow and block the air leakage hole 12, thereby improving the efficiency of inflating the first air cavity 51 and accelerating the inflation rate of the first air cavity 51. In this way, during the inflation process, gas can be minimized from leaking from the air leakage hole 12, thereby improving the efficiency of inflating the external air storage structure through the exhaust hole 11.

[0097] In a second aspect, an electronic blood pressure monitor is provided. According to an embodiment of the second aspect of the present application, the electronic blood pressure monitor includes an air storage structure, an air pump structure, a blood pressure detection assembly, and the air pressure circuit structure of the embodiment of the first aspect of the present application. The air storage structure is connected to the exhaust hole 11. The air pump structure is connected to the air inlet hole 21. The blood pressure detection assembly is electrically connected to the air pump structure and is used to measure changes in air pressure within the air storage structure.

[0098] Among them, the gas path structure involved in the embodiments of the present application is the same as the gas path structure involved in the above embodiments. For details, please refer to the relevant description above and will not be repeated here.

[0099] The gas storage structure refers to a structure that can store gas. As an example, the gas storage structure can be a cuff or wristband with an air bag.

[0100] The air pump structure refers to a structure used to generate gas and inflate the air path structure, so as to inflate the air toward the air storage structure through the air path structure.

[0101] The blood pressure monitoring assembly may include components such as a control circuit, a blood pressure sensor, and a power supply. During operation, the control circuit controls the opening and closing of the air pump structure. The blood pressure sensor measures changes in air pressure within the air storage structure and converts these changes into electrical signals that are transmitted to the control circuit. The power supply is electrically connected to the control circuit and the blood pressure sensor to power these components.

[0102] In the electronic blood pressure monitor provided in the embodiment of the present application, when the gas storage structure is deflated, the user can connect the gas storage structure to the exhaust port of the air path structure, so that the gas in the gas storage structure can enter the first air chamber 40 through the exhaust port and be discharged from the first air chamber 40 through the exhaust port on the first shell 10. During the process of gas leakage in the first air chamber 40, the air inlet 21 no longer takes in air, and the elastic structure 30 will not elastically deform toward the first shell 10, so that the elastic structure 30 will not block the air leakage hole 12, nor will it connect the air vent 32 with the second air chamber 50 through elastic deformation. In this way, the second shell 20 can always remain in a state of blocking the air vent 32 during the deflation process, thereby improving the problem that the gas in the first air chamber 40 is easily leaked from the air vent 32 to the second air chamber 50 when it is leaked, thereby improving the deflation effect of the air path structure on the gas storage structure.

[0103] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas path structure, characterized in that: include: The first shell is provided with exhaust holes and air leakage holes distributed at intervals; The second shell is provided with an air inlet hole; An elastic structure is arranged between the first shell and the second shell, and is enclosed with the first shell to form a first air chamber, and is enclosed with the second shell to form a second air chamber; the exhaust hole and the air leakage hole are both connected to the first air chamber, and the air intake hole is connected to the second air chamber; the elastic structure is provided with an air vent, which is connected to the first air chamber, and the second shell blocks the air vent; the elastic structure is used to elastically deform toward the first shell when air is taken in by the air intake hole, so as to block the air leakage hole and connect the air vent and the second air chamber.

2. The gas path structure according to claim 1, characterized in that: The elastic structure includes a first elastic member and a second elastic member, the first elastic member is elastically connected to the outer periphery of the second elastic member, and the first elastic member is provided with the vent hole, and the second elastic member is spaced apart from the vent hole; the first elastic member, the second elastic member and the first shell are arranged to form the first air chamber, and the first elastic member, the second elastic member and the second shell are arranged to form the second air chamber; along the through direction of the vent hole, the second elastic member protrudes from the first elastic member toward the first shell, and is arranged opposite to the air leakage hole; the second elastic member is used to elastically deform toward the first shell when air is taken in by the air inlet hole, so as to block the air leakage hole; the first elastic member is used to elastically deform toward the first shell when air is taken in by the air inlet hole, so as to connect the vent hole and the second air chamber.

3. The gas path structure according to claim 2, characterized in that: The second elastic member is an airbag.

4. The gas path structure according to claim 2, wherein: The first elastic member includes a first main body and a first movable member, the first main body is elastically connected to the outer periphery of the second elastic member; the vent is provided on the first main body, the first movable member is connected to the first main body, and is at least partially located in the vent; the second air chamber is provided with an opening, the first movable member blocks the opening to isolate the second air chamber and the vent; the first movable member is used to elastically move relative to the first elastic member when air is taken in by the air inlet, so as to open the opening so that the second air chamber and the vent are connected.

5. The gas path structure according to claim 4, characterized in that: Along the through direction of the air vent, the second shell is provided with a first protrusion protruding toward the air vent, the first protrusion blocks the air vent and is spaced apart from the air inlet; the second air chamber includes a first groove provided on the first protrusion, the first groove is connected to the air inlet; the opening is provided at one end of the first groove facing the first movable part, and the first movable part is used to elastically move away from the first protrusion when air is taken into the air inlet to open the opening.

6. The gas path structure according to claim 2, characterized in that: The first elastic member includes a second main body and a second movable member, the second main body is elastically connected to the outer periphery of the second elastic member, and is also elastically connected to the outer periphery of the second movable member; the second movable member is provided with the vent hole through it, and the second shell is provided with a second protrusion protruding toward the second movable member; the second protrusion blocks the vent hole to isolate the second air chamber and the vent hole from each other; the second movable member is used to elastically move away from the second protrusion when air is taken in by the air inlet hole, so that the vent hole is connected to the second air chamber.

7. The gas path structure according to claim 6, characterized in that: The second main body portion is spaced around the outer circumference of the second convex column, and the second main body portion, the second convex column and the second movable part together form a second groove, and the second groove is connected to the second air chamber; the second movable part is used to elastically move away from the second convex column when air is taken in by the air inlet hole, so that the air vent is connected to the second groove.

8. The gas path structure according to claim 6, wherein: The air path structure further includes a positioning member provided on the second convex column, and the positioning member passes through the vent hole.

9. The gas path structure according to any one of claims 2 to 8, characterized in that: The second air chamber includes a first air cavity and an air guide cavity connected to the first air cavity, wherein the first air cavity is provided between the second elastic member and the second shell; along the distribution direction of the second elastic member and the vent hole, the air guide cavity is provided between the first air cavity and the vent hole; the air guide cavity is used to connect to the vent hole when air is admitted through the air inlet hole; The air inlet is connected to the first air cavity and / or the air guide cavity.

10. An electronic blood pressure monitor, characterized in that: include: The gas path structure according to any one of claims 1 to 9; an air storage structure connected to the exhaust hole; an air pump structure connected to the air inlet; The blood pressure detection component is electrically connected to the air pump structure and is used to measure the changes in air pressure in the air storage structure.

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