Pump and valve integrated air pump for sphygmomanometer
By integrating the air pump with the linker, and using a pump-valve integrated air pump with cylinder, diaphragm and valve core structure, the cost increase and leakage problems of independent components is solved, and the accurate and stable measurement of the blood pressure meter is achieved and the assembly of the sphygmomanometer is achieved.
Patent Information
- Application Number
- CN202422062199.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The air pump and five-way parts in the existing blood pressure meter are independent components, which increases production cost and assembly complexity. The tongue-type one-way valve is prone to gas leakage, affecting measurement accuracy.
Design a pump and valve integrated air pump, integrating the air pump with the linker, adopting a cylinder, diaphragm and valve core structure to realize the function of inflation and exhaust, ensuring airtightness, reducing the number of components and simplifying assembly.
It improves the accuracy and stability of blood pressure measurement, reduces production costs, and simplifies the assembly process, providing convenient maintenance and replacement methods.
Smart Images
Figure CN223089509U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air pumps, and particularly relates to an integrated pump-valve air pump for a sphygmomanometer. Background Art
[0002] A sphygmomanometer is a medical device used to measure human blood pressure. By measuring the pressure exerted by blood flow on the blood vessel wall, it helps people understand their own health conditions and is of great significance for the monitoring and diagnosis of cardiovascular diseases such as hypertension. A sphygmomanometer usually consists of components such as an air pump, a silicone tube, a five-way part, a pressure sensor, a display screen, and a cuff. When using a sphygmomanometer, the air pump inflates the cuff to compress the brachial artery. When the pressure for measuring blood pressure is reached, the air pump gradually deflates, and the pressure sensor monitors the pressure change to calculate the blood pressure value. The five-way part plays a key role in guiding the gas flow during this process, ensuring that the gas flows along a predetermined path to achieve accurate blood pressure measurement.
[0003] Normally, the air pump and the five-way part are two separate components and need to be connected by a silicone hose to work together. This design not only increases the number of components, raises the production cost, but also increases the complexity of the process and the time cost during the assembly process. In addition, an intake check valve and an exhaust check valve are generally provided in the air pump to ensure the normal operation of the air pump. The intake check valve and the exhaust check valve in the existing air pumps generally adopt a tongue-type structure, and it is often difficult for this tongue-type check valve to ensure the airtightness of the sphygmomanometer. When the air pump inflates, gas may leak from the edge of the valve piece of the tongue-type check valve, resulting in unstable pressure of the sphygmomanometer and affecting the accuracy of blood pressure measurement. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides an integrated pump-valve air pump for a sphygmomanometer. When the sphygmomanometer measures blood pressure, the integrated pump-valve air pump for a sphygmomanometer can provide accurate and stable pressure, improving the accuracy of blood pressure measurement.
[0005] To achieve the above object, the utility model provides the following technical solutions:
[0006] A pump-valve integrated air pump for a sphygmomanometer, comprising a pump body and a linkage provided on the top of the pump body; the linkage is provided with a first channel, and the linkage is used for connecting various components of the sphygmomanometer. The pump body is provided with a power mechanism and a charging and discharging mechanism, and the power mechanism is used to drive the charging and discharging mechanism to charge and discharge air; the charging and discharging mechanism includes a bracket provided on the top of the pump body, a diaphragm provided on the top of the bracket, and a cylinder provided on the diaphragm. The diaphragm is provided between the bracket and the linkage. The bracket is provided with a valve core, and the diaphragm is provided with a second channel. The second channel is communicated with the first channel. The valve core is partially placed in the second channel. An exhaust gap is provided between the valve core and the second channel, and the exhaust gap is communicated with the cylinder. The cylinder is provided with an inflation hole. When the power mechanism drives the cylinder to compress and exhaust air, the power mechanism seals the inflation hole.
[0007] Preferably, the charging and discharging mechanism further includes a diaphragm side cavity, and the diaphragm side cavity is respectively communicated with the cylinder and the exhaust gap.
[0008] Preferably, a first side cavity groove is provided at the bottom of the linkage, and the first side cavity groove is communicated with the cylinder. A side cavity hole is provided at the top of the diaphragm, and the first side cavity groove is communicated with the side cavity hole. A side cavity channel is provided at the top of the bracket, and the side cavity channel extends towards the outer side wall of the valve core. The side cavity hole is communicated with the side cavity channel. The first side cavity groove, the side cavity hole and the side cavity channel together form the diaphragm side cavity.
[0009] Preferably, an elastic sheet is provided at the top of the diaphragm, and the elastic sheet is provided at the communication part of the side cavity hole and the first side cavity groove. The elastic sheet is used to separate the first side cavity groove and the side cavity hole. When the volume of the cylinder is compressed to pressurize the gas in the cylinder, the gas in the cylinder pushes the elastic sheet to make the first side cavity groove communicate with the side cavity hole.
[0010] Preferably, a quick pressure relief mechanism is further included, and the quick pressure relief mechanism is used to quickly relieve the pressure of the sphygmomanometer. The valve core is provided with a third channel, one end of the third channel is communicated with the second channel, and the other end is communicated with the atmosphere. The quick pressure relief mechanism includes a sealing gasket, and the sealing gasket is provided at the bottom of the bracket to seal one end of the third channel communicated with the atmosphere. There is a distance between the sealing gasket and one end of the third channel communicated with the atmosphere. When the power mechanism drives the charging and discharging mechanism to charge and discharge air, the power mechanism pushes the sealing gasket to seal one end of the third channel communicated with the atmosphere.
[0011] Preferably, the linkage is detachably connected to the top of the pump body.
[0012] Preferably, the linkage is installed on the top of the pump body through a snap structure.
[0013] Preferably, the linkage is installed on the top of the pump body through a threaded structure.
[0014] Preferably, the linkage is installed on the top of the pump body through a pin structure.
[0015] Preferably, the linkage is provided with an armband jack interface, a micro-leak valve interface, and a pressure sensor interface, and the armband jack interface, the micro-leak valve interface, and the pressure sensor interface are all communicated with the first channel.
[0016] Compared with the prior art, the utility model has the following advantages.
[0017] 1. When the cylinder exhausts air, the power mechanism closes the inflation hole and compresses the volume of the cylinder, so that the gas in the cylinder is compressed to high pressure, and then the high-pressure gas rushes out from the exhaust gap between the valve core and the first channel, thus realizing the exhaust function. Only when the gas in the cylinder is compressed to high pressure can the gas in the cylinder be discharged from the exhaust gap. Since the air pressure in the atmosphere is relatively small, the air in the atmosphere cannot enter the cylinder from the exhaust gap, so that the combination of the cylinder and the exhaust gap achieves the effect of an exhaust check valve. Moreover, during the inflation process, since the air pressure in the cylinder is relatively small, the gas cannot be discharged from the exhaust gap to the outside of the cylinder, effectively preventing the gas from leaking from the exhaust gap. When the cylinder is inflated, the atmosphere enters the cylinder through the inflation hole for inflation. When the cylinder exhausts air, the power mechanism seals the inflation hole, so that the power mechanism and the inflation hole achieve the effect of an inflation check valve. Moreover, when the cylinder exhausts air, since the power mechanism seals the inflation hole, the gas is effectively prevented from leaking from the inflation hole. Through the synergistic effect of the power mechanism, the diaphragm, the inflation hole, the cylinder, and the exhaust gap, etc., the airtightness of the air pump is effectively guaranteed, so that when the sphygmomanometer measures blood pressure, it can provide accurate and stable pressure, improving the accuracy of blood pressure measurement.
[0018] 2. Integrating the air pump and the linkage reduces the number of components of the sphygmomanometer, which not only reduces the production cost but also simplifies the assembly process.
[0019] 3. The linkage and the top of the pump body adopt a detachable connection method, which provides great convenience for the maintenance and replacement of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0021] Figure 1 FIG. 4 is a schematic diagram of the overall structure of an integrated pump-valve air pump for a sphygmomanometer according to Embodiment 1 of the present invention;
[0022] Figure 2 FIG. 8 is a schematic diagram of the internal structure of an integrated pump-valve air pump for a sphygmomanometer according to Embodiment 1 of the present invention;
[0023] Figure 3 FIG. 12 is an exploded structure diagram of an integrated pump-valve air pump for a sphygmomanometer according to Embodiment 1 of the present invention;
[0024] Figure 4 FIG. 16 is a schematic diagram of the overall structure of a diaphragm and a cylinder in an integrated pump-valve air pump for a sphygmomanometer according to Embodiment 1 of the present invention;
[0025] Figure 5 FIG. 20 is a schematic diagram of the overall structure of a bracket in an integrated pump-valve air pump for a sphygmomanometer according to Embodiment 1 of the present invention;
[0026] Figure 6 FIG. 24 is a schematic diagram of the overall structure of a linkage in an integrated pump-valve air pump for a sphygmomanometer according to Embodiment 1 of the present invention.
[0027] Reference numerals: 1, pump body; 2, linkage; 21, first channel; 22, armband jack interface; 23, micro-leak valve interface; 24, pressure sensor interface; 3, power mechanism; 31, motor; 32, eccentric wheel; 321, rotating groove; 322, high end; 323, low end; 33, swing rod; 34, pressing column; 4, air charging and discharging mechanism; 41, bracket; 42, valve core; 421, third channel; 43, diaphragm; 44, second channel; 45, cylinder; 46, exhaust gap; 47, inflation hole; 48, diaphragm side cavity; 481, first side cavity groove; 482, side cavity hole; 483, side cavity channel; 484, elastic piece; 485, second side cavity groove; 5, rapid pressure relief mechanism; 51, gasket; 52, fixed block. Detailed implementation manners
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0031] See Figure 1 and Figure 3 , an embodiment of the present utility model discloses a pump-valve integrated air pump for a sphygmomanometer, which includes a pump body 1 and a linkage 2 provided on the top of the pump body 1; the linkage 2 is provided with a first channel 21, and the linkage 2 is used for connecting various components of the sphygmomanometer. A power mechanism 3 and a charging and exhausting mechanism 4 are provided in the pump body 1. The power mechanism 3 is used to drive the charging and exhausting mechanism 4 to charge and exhaust; the charging and exhausting mechanism 4 includes a bracket 41 provided on the top of the pump body 1, a diaphragm 43 provided on the top of the bracket 41, and a cylinder 45 provided on the diaphragm 43. The diaphragm 43 is provided between the bracket 41 and the linkage 2. The bracket 41 is provided with a valve core 42, the diaphragm 43 is provided with a second channel 44, the second channel 44 is communicated with the first channel 21, a part of the valve core 42 is placed in the second channel 44, and an exhaust gap 46 is provided between the valve core 42 and the second channel 44. The exhaust gap 46 is communicated with the cylinder 45, and the cylinder 45 is provided with an inflation hole 47. When the power mechanism 3 drives the cylinder 45 to compress and exhaust, the power mechanism 3 seals the inflation hole 47.
[0032] Specifically, in this embodiment, there are three cylinders 45, and the three cylinders 45 are all arranged on the diaphragm 43. A plurality of flow holes communicating with the atmosphere are provided at the bottom of the pump body 1. The power mechanism 3 includes a motor 31, an eccentric wheel 32, and a swing rod 33. The motor 31 is installed on the outer side wall of the bottom of the pump body 1, and the output shaft of the motor 31 penetrates the outer side wall of the bottom of the pump body 1. The eccentric wheel 32 and the swing rod 33 are arranged inside the pump body 1. The bottom of the eccentric wheel 32 is fixedly connected to the output shaft of the motor 31. The swing rod 33 is obliquely arranged on the top of the eccentric wheel 32. The valve core 42 is arranged at the central position of the top of the bracket 41. When a pump-valve integrated air pump for a sphygmomanometer exhausts air, the motor 31 is started. The output shaft of the motor 31 drives the eccentric wheel 32 to rotate, and then the eccentric wheel 32 drives the swing rod 33 to swing. The movement of the swing rod 33 causes the cylinders 45 on the diaphragm 43 to produce compression and expansion actions. When the cylinder 45 compresses, the gas in the cylinder 45 is compressed to a high-pressure state. At this time, the power mechanism 3 seals the inflation hole 47 to prevent gas from flowing back. The high-pressure gas is discharged through the exhaust gap 46 communicating with the cylinder 45. Since the exhaust gap 46 communicates with the first channel 21, and the first channel 21 is connected to other components of the sphygmomanometer through the linkage 2, the exhaust function is realized. When the air pump needs to be inflated, the motor 31 drives the eccentric wheel 32 and the swing rod 33 to move, causing the cylinder 45 to expand. At this time, since the air pressure in the cylinder 45 is relatively low, the air in the atmosphere enters the inside of the pump body 1 through the flow holes at the bottom of the pump body 1, and then enters the cylinder 45 through the inflation hole 47 of the cylinder 45 for inflation. During the inflation process, since the air pressure in the cylinder 45 is less than the external atmospheric pressure, and the power mechanism 3 does not seal the inflation hole 47, the gas can smoothly enter the cylinder 45 without leaking out through the exhaust gap 46. Through the synergistic action of the power mechanism 3, the diaphragm 43, the inflation hole 47, the cylinder 45, the exhaust gap 46, etc., the airtightness of the air pump is effectively guaranteed, so that the sphygmomanometer can provide accurate and stable pressure when measuring blood pressure, improving the accuracy of blood pressure measurement. At the same time, integrating the air pump and the linkage 2 reduces the number of components of the sphygmomanometer, reduces the production cost, and simplifies the assembly process.
[0033] See Figures 2 - 6, the charging and discharging mechanism 4 further includes a diaphragm side cavity 48, and the diaphragm side cavity 48 is respectively communicated with the air cylinder 45 and the exhaust gap 46. In this embodiment, there are three diaphragm side cavities 48, and the three diaphragm side cavities 48 are all communicated with different air cylinders 45. A first side cavity groove 481 is provided at the bottom of the linkage 2, and the first side cavity groove 481 is communicated with the air cylinder 45. A side cavity hole 482 is provided at the top of the diaphragm 43, and the first side cavity groove 481 is communicated with the side cavity hole 482. A side cavity channel 483 is provided at the top of the bracket 41, and the side cavity channel 483 extends towards the outer side wall of the valve core 42. The side cavity hole 482 is communicated with the side cavity channel 483. The first side cavity groove 481, the side cavity hole 482 and the side cavity channel 483 together form the diaphragm side cavity 48. When the air cylinder 45 is compressed, the gas in the air cylinder 45 is compressed to a high pressure state, and the high-pressure gas in the air cylinder 45 flows through the first side cavity groove 481, the side cavity hole 482 and the side cavity channel 483, and finally is discharged from the exhaust gap 46. The settings of the first side cavity groove 481, the side cavity hole 482 and the side cavity channel 483 provide a clear path and space for the flow of gas inside the air pump, ensuring the stability and reliability of the air pump operation.
[0034] See Figure 2 and Figure 4 , an elastic sheet 484 is provided at the top of the diaphragm 43, and the elastic sheet 484 is arranged at the communication position between the side cavity hole 482 and the first side cavity groove 481. The elastic sheet 484 is used to separate the first side cavity groove 481 and the side cavity hole 482. When the air cylinder 45 compresses its volume to pressurize the gas in the air cylinder 45, the gas in the air cylinder 45 pushes the elastic sheet 484 to make the first side cavity groove 481 communicate with the side cavity hole 482; when the air cylinder 45 is inflated, the gas pressure in the air cylinder 45 is relatively low, and the elastic sheet 484 returns to its original position, and the elastic sheet 484 separates the first side cavity groove 481 and the side cavity hole 482, so that when the air cylinder 45 is inflated, the gas in the air cylinder 45 can only be placed in the first side cavity groove 481 and the air cylinder 45, making it more difficult for the gas to leak from the exhaust gap 46, further enhancing the overall airtightness of the air pump.
[0035] See Figure 6 , a second side cavity groove 485 is further provided at the bottom of the linkage 2, and the second side cavity groove 485 is communicated with the side cavity hole 482. The second side cavity groove 485 is used to increase the space of the diaphragm side cavity 48.
[0036] See Figure 3, a rapid pressure relief mechanism 5 is also provided inside the pump body 1. The rapid pressure relief mechanism 5 is used to rapidly relieve the pressure of the sphygmomanometer. The valve core 42 is provided with a third channel 421. One end of the third channel 421 is communicated with the second channel 44, and the other end is communicated with the atmosphere. The rapid pressure relief mechanism 5 includes a sealing gasket 51 and a fixing block 52. The sealing gasket 51 is arranged at the bottom of the bracket 41 to seal one end of the third channel 421 communicated with the atmosphere. The fixing block 52 is arranged on the sealing gasket 51. In this embodiment, the fixing block 52 is set as a T-shaped block. The bottom of the sealing gasket 51 is recessed with a mounting groove adapted to the fixing block 52. There is a distance between the sealing gasket 51 and one end of the third channel 421 communicated with the atmosphere. When the power mechanism 3 drives the air charging and discharging mechanism 4 to charge and discharge air, the power mechanism 3 pushes the sealing gasket 51 to seal one end of the third channel 421 communicated with the atmosphere.
[0037] Specifically, the top surface of the eccentric wheel 32 is recessed with a rotating groove 321. The rotating groove 321 is close to the circumference of the top of the eccentric wheel 32. In this embodiment, the rotating groove 321 is an arc groove. The two ends of the rotating groove 321 are respectively set as the high end 322 and the low end 323. The height of the arc groove gradually decreases from the high end 322 to the low end 323. The swing rod 33 is inclined and arranged on the rotating groove 321. A pressing column 34 protrudes from the central position of the top of the swing rod 33. When the output shaft of the motor 31 drives the eccentric wheel 32 to rotate counterclockwise, the swing rod 33 rotates to the high end 322 of the rotating groove 321, and the height of the swing rod 33 rises, so that the pressing column 34 pushes the fixing block 52 to move towards the direction of the third channel 421. The fixing block 52 pushes the sealing gasket 51 to seal one end of the third channel 421 communicated with the atmosphere, thereby locking the rapid pressure relief mechanism 5. When the output shaft of the motor 31 drives the eccentric wheel 32 to rotate clockwise, the swing rod 33 rotates to the low end 323 of the rotating groove 321, and the height of the swing rod 33 drops, so that the pressing column 34 moves away from the fixing block 52. The fixing block 52 and the sealing gasket 51 return to their original positions. The fixing block 52 and the sealing gasket 51 move away from the third channel 421, thereby unlocking the rapid pressure relief mechanism 5. The setting of the rapid pressure relief mechanism 5 enables the sphygmomanometer to rapidly relieve the pressure of the sphygmomanometer by simply rotating the motor 31 in the reverse direction when pressure relief is required, improving the convenience of use of the sphygmomanometer.
[0038] See Figure 1 , Figure 3 and Figure 6 The linkage 2 is detachably connected to the top of the pump body 1. The linkage 2 is installed on the top of the pump body 1 through a snap structure. Specifically, a snap is integrally formed at the bottom of the linkage 2. A clamping groove adapted to the snap is provided on the outer side wall of the pump body 1. The linkage 2 is detachably installed on the top of the pump body 1 through the cooperation of the snap and the clamping groove.
[0039] In some other embodiments, the linkage 2 is mounted on the top of the pump body 1 through a threaded structure. Specifically, a threaded sleeve is provided at the bottom of the linkage 2, and a threaded groove mating with the threaded sleeve is provided on the outer side wall of the pump body 1. The linkage 2 is detachably mounted on the top of the pump body 1 through the cooperation of the threaded sleeve and the threaded groove.
[0040] In some other embodiments, the linkage 2 is mounted on the top of the pump body 1 through a pin structure. Specifically, a pin hole is provided at the bottom of the linkage 2, and a pin seat corresponding to the pin hole is provided on the outer side wall of the pump body 1. The detachable mounting of the linkage 2 on the top of the pump body 1 is achieved by inserting a pin into the pin hole and the pin seat.
[0041] The top of the linkage 2 and the pump body 1 adopt a detachable connection method. Through structures such as buckles, threads or pins, it facilitates the maintenance and replacement of the equipment.
[0042] See Figure 6 , the linkage 2 is provided with an armband jack interface 22, a micro-leak valve interface 23 and a pressure sensor interface 24. The armband jack interface 22, the micro-leak valve interface 23 and the pressure sensor interface 24 are all communicated with the first channel 21.
[0043] The implementation principle of this embodiment:
[0044] During the operation of the sphygmomanometer, when it is necessary to inflate the cuff to measure blood pressure, the motor 31 is started and kept rotating counterclockwise. The swing rod 33 rotates to the high end 322 of the rotating groove 321, the height of the swing rod 33 rises, the pressing column 34 pushes the fixed block 52 to move towards the direction of the third channel 421, and the fixed block 52 pushes the sealing gasket 51 to seal one end of the third channel 421 communicating with the atmosphere, thereby locking the quick pressure relief mechanism 5. The output shaft of the motor 31 drives the eccentric wheel 32 to rotate, and the swing rod 33 swings up and down as the eccentric wheel 32 rotates counterclockwise. During this process, the movement of the swing rod 33 causes the cylinder 45 on the diaphragm 43 to produce reciprocating actions of expansion and compression, realizing the inflation of the cuff.
[0045] When the cylinder 45 expands, since the air pressure in the cylinder 45 is relatively low, the air in the atmosphere enters the inside of the pump body 1 through the circulation hole at the bottom of the pump body 1, and then enters the cylinder 45 through the inflation hole 47 of the cylinder 45 for inflation. During the inflation process, since the air pressure in the cylinder 45 is less than the external atmospheric pressure and the power mechanism 3 does not seal the inflation hole 47, the gas can smoothly enter the cylinder 45 and will not leak out from the exhaust gap 46.
[0046] When the cylinder 45 is compressed, the gas in the cylinder 45 is compressed to a high-pressure state. At this time, the power mechanism 3 seals the air inlet hole 47 to prevent the gas from flowing back. The high-pressure gas is discharged through the exhaust gap 46 communicating with the cylinder 45. Since the exhaust gap 46 communicates with the first channel 21, and the first channel 21 is connected to other components of the sphygmomanometer through the linkage 2, the exhaust function is realized. During the compression process of the cylinder 45, the high-pressure gas in the cylinder 45 also flows through the first side cavity groove 481, the side cavity hole 482 and the side cavity channel 483, providing a clear path and space for the flow of gas inside the air pump. When the volume of the cylinder 45 is compressed to pressurize the gas in the cylinder 45, the gas in the cylinder 45 pushes the elastic piece 484, making the first side cavity groove 481 communicate with the side cavity hole 482; when the cylinder 45 is inflated, the gas pressure in the cylinder 45 is relatively low, and the elastic piece 484 returns to its original position, separating the first side cavity groove 481 from the side cavity hole 482, making it more difficult for the gas to leak from the exhaust gap 46, and further enhancing the overall airtightness of the air pump.
[0047] When the cuff is inflated and the blood pressure measurement is completed, the cuff needs to be deflated. At this time, the drive motor 31 rotates clockwise, and the swing rod 33 rotates to the lower end 323 of the rotation groove 321. The height of the swing rod 33 decreases, causing the pressing column 34 to move away from the fixed block 52, and the sealing gasket 51 and the fixed block 52 return to their original positions. The sealing gasket 51 and the fixed block 52 move away from the third channel 421, thus unlocking the quick deflation mechanism 5. One end of the third channel 421 of the valve core 42 communicates with the second channel 44, and the other end communicates with the atmosphere. The sealing gasket 51 originally sealed the end of the third channel 421 communicating with the atmosphere. At this time, after the quick deflation mechanism 5 is unlocked, the gas can be quickly discharged through the third channel 421, realizing the quick deflation of the sphygmomanometer cuff.
[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An integrated pump-valve air pump for a sphygmomanometer, characterized in that, It includes a pump body (1) and a coupler (2) provided at the top of the pump body (1); the coupler (2) is provided with a first channel (21), and the coupler (2) is used for connecting various components of the sphygmomanometer. The pump body (1) is provided with a power mechanism (3) and a charging and exhausting mechanism (4), and the power mechanism (3) is used to drive the charging and exhausting mechanism (4) to charge and exhaust; the charging and exhausting mechanism (4) includes a bracket (41) provided at the top of the pump body (1), a diaphragm (43) provided at the top of the bracket (41), and a cylinder (45) provided on the diaphragm (43). The diaphragm (43) is provided between the bracket (41) and the coupler (2). The bracket (41) is provided with a valve core (42), the diaphragm (43) is provided with a second channel (44), the second channel (44) is communicated with the first channel (21), a part of the valve core (42) is placed in the second channel (44), and an exhaust gap (46) is provided between the valve core (42) and the second channel (44). The exhaust gap (46) is communicated with the cylinder (45), and the cylinder (45) is provided with an inflation hole (47). When the power mechanism (3) drives the cylinder (45) to compress and exhaust, the power mechanism (3) seals the inflation hole (47).
2. The integrated pump valve air pump for a sphygmomanometer according to claim 1, characterized in that, The charging and exhausting mechanism (4) further includes a diaphragm side cavity (48), and the diaphragm side cavity (48) is respectively communicated with the cylinder (45) and the exhaust gap (46).
3. The integrated pump-valve air pump for a sphygmomanometer according to claim 2, wherein A first side cavity groove (481) is provided at the bottom of the coupler (2), the first side cavity groove (481) is communicated with the cylinder (45), a side cavity hole (482) is provided at the top of the diaphragm (43), the first side cavity groove (481) is communicated with the side cavity hole (482), a side cavity channel (483) is provided at the top of the bracket (41), and the side cavity channel (483) extends towards the outer side wall of the valve core (42). The side cavity hole (482) is communicated with the side cavity channel (483), and the first side cavity groove (481), the side cavity hole (482) and the side cavity channel (483) together form the diaphragm side cavity (48).
4. The integrated pump-valve air pump for a sphygmomanometer according to claim 3, wherein, An elastic sheet (484) is provided at the top of the diaphragm (43), and the elastic sheet (484) is provided at the communication position between the side cavity hole (482) and the first side cavity groove (481). The elastic sheet (484) is used to separate the first side cavity groove (481) from the side cavity hole (482). When the volume of the cylinder (45) is compressed to pressurize the gas in the cylinder (45), the gas in the cylinder (45) pushes the elastic sheet (484) to make the first side cavity groove (481) communicate with the side cavity hole (482).
5. The integrated pump valve air pump for a sphygmomanometer according to claim 1, characterized in that, A rapid pressure relief mechanism (5) is further provided inside the pump body (1). The rapid pressure relief mechanism (5) is used to rapidly relieve the pressure of the sphygmomanometer. The valve core (42) is provided with a third channel (421). One end of the third channel (421) is communicated with the second channel (44), and the other end is communicated with the atmosphere. The rapid pressure relief mechanism (5) includes a sealing gasket (51). The sealing gasket (51) is arranged at the bottom of the bracket (41) to seal one end of the third channel (421) communicated with the atmosphere. There is a distance between the sealing gasket (51) and one end of the third channel (421) communicated with the atmosphere. When the power mechanism (3) drives the air charging and discharging mechanism (4) to charge and discharge air, the power mechanism (3) pushes the sealing gasket (51) to seal one end of the third channel (421) communicated with the atmosphere.
6. The integrated pump valve air pump for a sphygmomanometer according to claim 1, characterized in that, The linkage (2) is detachably connected to the top of the pump body (1).
7. The integrated pump valve air pump for a sphygmomanometer according to claim 6, wherein, The linkage (2) is installed on the top of the pump body (1) through a snap structure.
8. The integrated pump valve air pump for a sphygmomanometer according to claim 6, characterized in that, The linkage (2) is installed on the top of the pump body (1) through a threaded structure.
9. The integrated pump valve air pump for a sphygmomanometer according to claim 6, characterized in that, The linkage (2) is installed on the top of the pump body (1) through a pin structure.
10. A pump-valve integrated air pump for a sphygmomanometer according to claim 1, characterized in that, The linkage (2) is provided with an armband jack interface (22), a micro-leak valve interface (23), and a pressure sensor interface (24). The armband jack interface (22), the micro-leak valve interface (23), and the pressure sensor interface (24) are all communicated with the first channel (21).