pneumatic pressure regulating pump and blood pressure monitor

Abstract

This invention relates to the field of fluid machinery technology, specifically to a pneumatic pressure regulating pump and a sphygmomanometer. The pneumatic pressure regulating pump includes a pump head assembly, a charging / discharging assembly, and fixing bolts. The pump head assembly includes a pump cover, a sealing gasket, and a flap seat. An air passage is formed between the pump cover and the flap seat. The sealing gasket is disposed within the air passage, which communicates with a through hole, a supply air passage, and a venting air passage. The charging / discharging assembly includes a pump tap and a pump tap seat. A one-way valve is formed on the sealing gasket. The one-way valve passes through the through hole, allowing airflow to flow unidirectionally from the pump tap to the air passage. When the pneumatic pressure regulating pump vents, airflow enters from the supply air passage. At this time, the airflow cannot pass through the through hole blocked by the one-way valve. Instead, the airflow can only enter the venting air passage through the air passage and is then discharged from the pneumatic pressure regulating pump, thus completing the venting of the pneumatic pressure regulating pump. This pneumatic pressure regulating pump can achieve its venting function by providing a one-way valve on the sealing gasket, eliminating the need for an additional solenoid valve.

Description

Technical Field

[0001] This invention relates to the field of fluid machinery technology, specifically to a pneumatic pressure regulating pump and a blood pressure monitor. Background Technology

[0002] A blood pressure monitor is a medical device used to measure blood pressure. It helps people understand their health status by measuring the pressure exerted on the walls of blood vessels as blood flows through them, and is of great significance for the monitoring and diagnosis of cardiovascular diseases such as hypertension.

[0003] In existing sphygmomanometers, an additional solenoid valve is typically installed outside the air pump to enable its inflation and deflation functions. However, the wiring and circuit connections between the air pump and the solenoid valve are quite complex, and the additional solenoid valve can cause excessive pressure on the sphygmomanometer. Furthermore, when the motor drives the air pump to deliver air to the bladder, the air enters the air pump and bladder at high speed through the air intake channel. The airflow collides with the internal cavity of the air pump, generating significant noise and affecting the overall user experience of the sphygmomanometer. Summary of the Invention

[0004] This invention addresses the aforementioned technical problems by providing a pressure regulating pump. A fixing bolt is inserted into the air inlet channel, allowing gas to enter the pump along a spiral trajectory, thus reducing noise generated during air intake. A one-way valve is installed on the sealing gasket, enabling unidirectional airflow within the pump. This integrated pump and valve design reduces production costs and avoids problems related to assembly and complex circuitry.

[0005] This invention provides a blood pressure monitor that, by incorporating a pressure regulating valve, eliminates the need for an additional solenoid valve when using an ascending measurement method. This reduces the overall size of the blood pressure monitor and solves the problem of excessively large existing blood pressure monitors.

[0006] To achieve the above objectives, the present invention also provides a pneumatic pressure regulating pump, including an air head assembly having a first connecting hole, an air supply channel, and an air venting channel, comprising an air pump cover, a sealing gasket, and a fin seat. The fin seat has a through hole and an air passage groove. An air passage is formed between the air pump cover and the fin seat. The sealing gasket is disposed within the air passage. The air passage communicates with the air passage groove, the air supply channel, and the air venting channel. A filling and emptying assembly includes a pump foot and a pump foot seat. The pump foot includes an air inlet and is mounted on the pump foot seat. The pump foot seat is connected to the... The pump holder has a connecting groove and a second connecting hole. The connecting groove, the second connecting hole, and the first connecting hole are coaxially arranged, and the diameter of the connecting groove is larger than the diameter of the second connecting hole. The first connecting hole, the second connecting hole, and the connecting groove together form an air intake channel. A drive assembly is connected to the inflation / deflation assembly. A fixing bolt passes through the air intake channel and is fixedly connected to the air head assembly and the pump holder. A one-way valve is formed on the sealing gasket. The one-way valve passes through the through hole to allow airflow to flow unidirectionally from the pump to the air passage.

[0007] Preferably, the drive assembly includes a motor, a drive rod, a drive shaft, and a motor bracket. The two ends of the drive rod are respectively connected to the pump plate and the drive shaft. The motor is connected to the drive shaft and mounted on the motor bracket. A third connecting hole is formed on the motor bracket. The fixing bolt passes through the third connecting hole and is threaded to the pump plate seat.

[0008] Preferably, the air head assembly, the pump base, and the motor bracket form a pump body space, the air filling and exhaust assembly and the drive assembly are installed in the pump body space, and the connecting groove communicates with the pump body space.

[0009] Preferably, a boss is formed on the air pump cover, the boss is connected to the venting channel, and the boss and the umbrella blade seat form the air passage.

[0010] Preferably, the pump includes multiple cylinders and a sealing diaphragm, the sealing diaphragm covering the cylinders, and the sealing diaphragm having vent holes corresponding to the cylinders.

[0011] Preferably, the umbrella blade seat is provided with an air passage groove corresponding to the air vent, and the pump seat is provided with a side cavity hole and a side cavity channel, and the air passage groove is connected to the air passage, the cylinder, the side cavity hole and the side cavity channel.

[0012] Preferably, the sealing diaphragm has multiple sets of sealing lines and shut-off valves, the sealing lines are arranged around the vent and the shut-off valves, the shut-off valves are arranged corresponding to the side cavity, the sealing diaphragm has an air passage, the shut-off valves are arranged in the air passage, and the air passage communicates with the side cavity.

[0013] Preferably, the height of the shut-off valve is the same as the height of the sealing line.

[0014] Preferably, the sealing gasket divides the air passage into a first air passage and a second air passage, the first air passage being connected to the venting passage, and the second air passage being connected to the air supply passage and the cylinder.

[0015] The present invention provides a blood pressure monitor, comprising a cuff, a connecting pipe, a pressure sensor, and a pressure regulating pump as described in any of the above claims, wherein the cuff is connected to the air delivery channel of the pressure regulating pump via the connecting pipe, and the pressure sensor is installed inside the cuff.

[0016] Based on the above description and practice, the pneumatic pressure regulating pump of the present invention includes a head assembly, a charging / discharging assembly, a drive assembly, and fixing bolts. The head assembly has a first connecting hole, an air supply channel, and a venting channel, and includes a pump cover, a sealing gasket, and a blade seat. The blade seat has a through hole and an air passage groove. An air passage is formed between the pump cover and the blade seat. The sealing gasket is disposed within the air passage. The air passage communicates with the air passage groove, the air supply channel, and the venting channel, allowing airflow to flow within the head assembly and exit between the air supply channel and the venting channel. The charging / discharging assembly includes a pump plate and a pump plate seat. The pump plate includes an air inlet and is mounted on the pump plate seat. The pump plate seat is connected to the blade seat, thus fixing the head assembly and the charging / discharging assembly together. The pump plate has a connecting groove and a second connecting hole. The connecting groove, the second connecting hole, and the first connecting hole are coaxially arranged, and the diameter of the connecting groove is larger than the diameter of the second connecting hole. The first connecting hole, the second connecting hole, and the connecting groove together form the air inlet channel. The drive assembly is connected to the inflation / deflation assembly, driving its operation. A fixing bolt passes through the intake channel and is fixedly connected to the air head assembly and the pump holder. When the drive assembly is activated, airflow enters through the first connecting hole and flows through the intake channel. The airflow rotates along the threads of the fixing bolt, reducing its velocity within the pressure regulating pump. Upon entering the connecting groove, the airflow follows the groove into the pressure regulating pump, preventing direct collision with the pump's inner wall. This ensures smooth air intake and reduces noise during operation. A one-way valve is formed on the sealing gasket. This valve passes through a through-hole, allowing airflow to flow unidirectionally from the pump holder to the air passage. When airflow enters the air passage from the pressure regulating pump under the action of the pump holder, the one-way valve moves upward under the airflow, disengaging from the through-hole. Airflow then enters the air passage through the through-hole and exits the pressure regulating pump via the delivery channel, completing the pump's air delivery function. When the pressure regulating pump is depressurized, airflow enters from the air supply channel. At this point, the airflow cannot pass through the through-hole blocked by the check valve. Instead, the airflow can only enter the depressurization channel through the air passage and is then expelled from the pressure regulating pump, thus completing the depressurization process. This pressure regulating pump can achieve its depressurization function by incorporating a check valve on the sealing gasket, eliminating the need for an additional solenoid valve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the exploded structure of a pressure regulating pump according to one embodiment of the present invention.

[0018] Figure 2 This is a partial cross-sectional view of a pressure regulating pump involved in one embodiment of the present invention.

[0019] Figure 3 This is an exploded structural diagram of the air pressure regulating pump's air filling and exhaust assembly according to one embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the pump holder of a pressure regulating pump according to one embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the air pump of the air pressure regulating pump involved in one embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the air pump of the air pressure regulating pump involved in another embodiment of the present invention.

[0023] The attached figures are labeled as follows: 1. Air head assembly; 10. Pump body space; 11. First connection hole; 12. Air supply channel; 13. Air venting channel; 130. Boss; 14. Air pump cover; 15. Sealing gasket; 150. One-way valve; 16. Umbrella blade seat; 160. Through hole; 161. Air passage groove; 17. Air passage; 171. First air passage; 172. Second air passage; 2. Inflation and degassing assembly; 20. Central through hole; 21. Pump foot; 210. Air inlet; 22. Pump foot seat; 221. Mounting hole; 222. Side cavity channel; 223. Side cavity hole; 23. Connecting groove; 24. Second connecting hole; 25. Cylinder; 26. Sealing diaphragm; 260. Vent hole; 261. Sealing line; 262. Shut-off valve; 263. Vent hole; 3. Fixing bolt; 4. Drive assembly; 41. Motor; 42. Drive rod; 43. Drive shaft; 44. Motor bracket; 45. Third connecting hole. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0025] Furthermore, the accompanying drawings are merely illustrative diagrams of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this invention disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0026] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] This invention discloses a blood pressure monitor, including a cuff, a connecting pipe, a pressure sensor, and a pressure regulating pump. The cuff is connected to the air delivery channel of the pressure regulating pump via the connecting pipe, and the pressure sensor is installed inside the cuff. The connecting hole of the fixing bolt on the pressure regulating pump serves as an air inlet channel, allowing airflow to slowly enter the pressure regulating pump along the threads, reducing the impact of airflow on the inner wall of the pump and thus reducing the operating noise of the blood pressure monitor. By employing a pressure regulating pump, the pump and valve are integrated, eliminating the need for an additional solenoid valve and solving the problem of excessively large blood pressure monitor size.

[0028] This invention discloses a pneumatic pressure regulating pump that integrates the pump and valve as described above. For details, please refer to... Figures 1 to 4The air pressure regulating pump includes an air head assembly 1, an air filling and exhaust assembly 2, a drive assembly 4, and fixing bolts 3. The air head assembly 1 has a first connecting hole 11, an air supply channel 12, and an air venting channel 13. It includes an air pump cover 14, a sealing gasket 15, and a blade seat 16. The blade seat 16 has a through hole 160 and an air passage groove 161. An air passage 17 is formed between the air pump cover 14 and the blade seat 16. The sealing gasket 15 is disposed in the air passage 17. The air passage 17 communicates with the air passage groove 161, the air supply channel 12, and the air venting channel 13, allowing airflow to flow within the air head assembly 1 and exit between the air supply channel 12 and the air venting channel 13. The air filling and exhaust assembly 2 includes a pump plate 21 and a pump plate seat 22. Both the pump plate 21 and the pump plate seat 22 have a central through hole 20. The pump 21 includes an air inlet 210 and is mounted on a pump base 22, which is connected to an umbrella-shaped support 16, thus fixing the air head assembly 1 and the inflation / deflation assembly 2 together. The pump 21 has a connecting groove 23 and a second connecting hole 24. The connecting groove 23, the second connecting hole 24, and the first connecting hole 11 are coaxially arranged, and the diameter of the connecting groove 23 is larger than the diameter of the second connecting hole 24. The first connecting hole 11, the second connecting hole 24, and the connecting groove 23 together form an air intake channel. The drive assembly 4 is connected to the inflation / deflation assembly 2 and drives the inflation / deflation assembly 2 to operate. A fixing bolt 3 passes through the air intake channel and is fixedly connected to the air head assembly 1 and the pump base 22. When the drive assembly 4 is turned on, the airflow enters through the first connecting hole 11 and flows through the air intake channel. The airflow rotates along the thread of the fixing bolt 3, which reduces the flow velocity of the airflow when it enters the air pressure regulating pump. When the airflow enters the connecting groove 23, it can enter the air pressure regulating pump along the connecting groove 23, avoiding direct collision between the airflow and the inner wall of the air pressure regulating pump. This ensures smooth air intake of the air pressure regulating pump and reduces the noise generated by the air pressure regulating pump during operation. A one-way valve 150 is formed on the sealing gasket 15. The one-way valve 150 passes through the through hole 160, allowing airflow to flow unidirectionally from the pump sprocket 21 to the air passage 17. When airflow enters the air passage 17 from the pressure regulating pump under the action of the pump sprocket 21, the one-way valve 150 moves upward under the action of the airflow, disengaging from the through hole 160. The airflow can then enter the air passage 17 through the through hole 160 and the central through hole 20, and is then sent out of the pressure regulating pump through the air delivery passage 12, completing the air delivery of the pressure regulating pump. When the pressure regulating pump is depressurized, airflow enters from the air delivery passage 12. At this time, the airflow cannot pass through the through hole 160 blocked by the one-way valve 150. The airflow can only enter the depressurization passage 13 through the air passage 17, and is then sent out of the pressure regulating pump, thus completing the depressurization of the pressure regulating pump. The air pressure regulating pump can achieve the air release function by setting a one-way valve 150 on the sealing gasket 15, eliminating the need for an additional solenoid valve.

[0029] Furthermore, in some embodiments, the drive assembly 4 includes a motor 41, a drive rod 42, a drive shaft 43, and a motor bracket 44. The two ends of the drive rod 42 are connected to the pump plate 21 and the drive shaft 43, respectively. The motor 41 is connected to the drive shaft 43 and mounted on the motor bracket 44. The motor bracket 44 is connected to the pump plate seat 22, thus stably fixing the drive assembly 4 together with the air head assembly 1 and the inflation / deflation assembly 2, further ensuring the overall operational quality of the pressure regulating pump. The drive rod 42 is eccentrically positioned. When the pressure regulating pump needs to inflate the cuff, the motor 41 operates, driving the drive shaft 43 to rotate and causing the drive rod 42 to move up and down within the pump plate 21, sending the gas from the pressure regulating pump into the pump plate 21. The airflow passes through the central through-hole 20 into the air passage 17, flows within the air passage 17, and pushes the one-way valve 150 out of the through-hole 160, delivering it into the cuff via the air delivery passage 12. When the pressure regulating pump releases air from the cuff, the motor stops rotating, and the airflow enters the pressure regulating pump from the air supply channel 12. At this time, the one-way valve 150 blocks the through hole 160, and the airflow cannot enter the pump 21. It can only flow through the air passage 17 to the venting channel 13 and be discharged from the pressure regulating pump through the venting channel 13.

[0030] Understandably, in order to stably fix the drive assembly 4 and the inflation / deflation assembly 2 together, in some embodiments, a third connection hole 45 is formed on the motor bracket 44, and the fixing bolt 3 is threaded into the third connection hole 45. The air head assembly 1, the inflation / deflation assembly 2 and the drive assembly 4 are fixed by the same fixing bolt 3. On the one hand, this can avoid multiple openings in the structure, which would affect the strength of the entire structure. On the other hand, it can further ensure the stable fixation between the air head assembly 1, the inflation / deflation assembly 2 and the drive assembly 4, and prevent the connection between the structures from loosening due to the vibration generated by the rotation of the motor 41 when the air pressure regulating pump is working, which would cause gaps between the inflation / deflation assembly 2 and the air head assembly 1 and cause airflow leakage.

[0031] In some embodiments, the air head assembly 1, the pump holder 22, and the motor bracket 44 form a pump body space 10. The inflation / deflation assembly 2 and the drive assembly 4 are installed within the pump body space 10, and the connecting groove 23 communicates with the pump body space 10. Airflow entering from the air inlet channel enters the pump body space 10 via the connecting groove 23, then enters the drive rod 42 via the pump body space 10, and finally enters the pump holder 21 and the air passage 17. After passing through the air delivery channel 12, it connects with the cuff to complete the air delivery to the cuff.

[0032] Understandably, a boss 130 is formed on the air pump cover 14, which communicates with the venting channel 13. The boss 130 and the umbrella blade seat 16 form an air passage 17. At this time, the air passage 17 can be press-fitted with the sealing gasket 15. When the cuff vents, the airflow direction below the sealing gasket 15 is blocked by the one-way valve 150, and the air can only flow through the air passage 17 to the venting channel 13, further ensuring the sealing performance of the air pressure regulating pump when venting.

[0033] Understandably, to accelerate air delivery efficiency, in some embodiments, the pump 21 includes multiple cylinders 25 and a sealing diaphragm 26. The sealing diaphragm 26 covers the cylinders 25 and has ventilation holes 260 corresponding to those of the cylinders 25. The drive shaft 43 drives the drive rod 42 to move up and down under the action of the motor 41. At this time, the sealing diaphragm 26 continuously expands and compresses under the action of the cylinders 25, thereby pressurizing the cylinders 25. Airflow continuously flows from the ventilation holes 260 into the air passage 17, thus completing the inflation of the cuff.

[0034] Furthermore, in some embodiments, the pump holder 22 has a plurality of axially arranged mounting holes 221, and the cylinder 25 is mounted in the mounting holes 221, which further ensures that the pump holder 21 can be stably fixed on the pump holder 22.

[0035] To ensure stable airflow during air delivery by the pressure regulating pump, which conforms to the stable inflation of the rising algorithm blood pressure monitor, in some embodiments, the umbrella leaf seat 16 is provided with an air passage groove 161 corresponding to the air vent 260, and the pump seat 21 is provided with a side cavity hole 223 and a side cavity channel 222. The air passage groove 161 is connected to the air passage 17, the cylinder 25, the side cavity hole 223 and the side cavity channel 222. When the airflow enters the pump body space 10 through the air inlet 210 into the pump plate 21 under the action of the drive motor, the airflow flows out through the vent 260 and into the air passage 161, and then enters the side cavity hole 223 through the air passage 161. The airflow flows along the side cavity channel 222 to the middle of the pump plate seat and the umbrella blade seat 16, and enters the air passage 17 through the middle through hole 20. It is blocked by the sealing gasket 15 in the air passage 17 and cannot flow out directly from the venting channel 13. Instead, it flows along the air passage 17 to open the one-way valve 150 and enter the air delivery channel 12 to complete the stable air delivery to the cuff.

[0036] In other embodiments, to ensure that the air pressure regulating pump meets regulatory requirements for air tightness during air delivery, multiple sets of sealing lines 261 and shut-off valves 262 are formed on the sealing diaphragm 26. The sealing lines 261 are arranged around the vent 260 and the shut-off valve 262 to seal the airflow flowing near the vent 260 and the shut-off valve 262, preventing leakage from the edges during airflow. The shut-off valve 262 is correspondingly arranged with the side cavity hole 223, and the sealing diaphragm 26 has an air passage hole 263 corresponding to the shut-off valve 262. The shut-off valve 262 is disposed in the air passage hole 263, and the air passage hole 263 communicates with the side cavity hole 223. After the airflow enters the cylinder 25, under the action of the drive component 4, the airflow flows out from the vent 260 and simultaneously pushes the shut-off valve 262, so that the air passage 263 is connected to the side cavity hole 223. At this time, the airflow can flow through the side cavity channel 222 connected to the side cavity hole 223 to the middle of the pump seat and the umbrella blade seat 16, enter the air passage 17 through the middle through hole 20, and flow along the air passage 17 to open the one-way valve 150 and enter the air delivery channel 12, thus completing the stable air delivery to the cuff.

[0037] To further ensure airtightness, in some embodiments, the height of the shut-off valve 262 is the same as the height of the sealing line 261. The shut-off valve 262 can only open under the action of airflow when airflow flows out through the vent 260, ensuring unidirectional airflow. When the airflow stops, the shut-off valve 262 is parallel to the sealing line 261, and no more airflow will occur, further ensuring the airtightness of the pressure regulating pump and making it comply with the regulations for blood pressure monitors.

[0038] Understandably, to prevent airflow leakage from the venting channel 13 when the pressure regulating pump inflates the cuff, the pressure regulating pump divides the air passage 17 into a first air passage 171 and a second air passage 172. The first air passage 171 communicates with the venting channel 13, and the second air passage 172 communicates with the supply channel 12 and the cylinder 25. When the pressure regulating pump inflates the cuff, airflow spirals in from the inlet channel, enters the pump body space 10 via the connecting groove 23, and is then sent to the second air passage 172 via the cylinder 25 by the up-and-down movement of the drive rod 42. The airflow then passes through the supply channel 12 and into the cuff, completing the inflation of the cuff. When the pressure regulating pump deflates the cuff, airflow enters the cylinder 25 from the supply channel 12, passes through the first air passage 171, is sent to the venting channel 13, and exits the pressure regulating pump, completing the deflation of the cuff.

[0039] Specifically, when the pressure regulating pump inflates the cuff, the motor 41 drives the drive rod 42 to rotate, and the drive shaft 43 reciprocates up and down under the drive of the drive rod 42, causing the pump plate 21 to move up and down. Airflow enters the pump body space 10 through the air inlet spiral and then enters the pump plate 21 through the air inlet 210. Within the cylinder 25, the airflow enters the air passage 161 and the side cavity hole 223 through the vent hole 260 on the sealing diaphragm 26, and then enters the central through hole 20 along the side cavity channel 222. The airflow continues along the central through hole 20 into the second air passage 172, lifting the one-way valve 150 from the through hole 160 and delivering it into the cuff through the air delivery channel 12, thus completing the inflation of the cuff.

[0040] When the pressure regulating pump deflates the cuff, the gas inside the cuff enters the pressure regulating pump through the air supply channel 12. Under the action of the one-way valve 150, the airflow cannot enter the second air passage 172 through the through hole 160. Instead, it can only flow through the first air passage 171 to the deflation channel 13. The airflow leaves the pressure regulating pump through the deflation channel 13, thus completing the deflation of the cuff.

[0041] During the airtightness test of this pressure regulating pump, the venting channel 13 is blocked, and air is extracted from the pump through the supply channel 12 using equipment, making the air pressure inside the pump lower than the external atmospheric pressure. The pressure change inside the pump is then observed. The airflow direction when the gas is extracted from the pump is the same as when air is supplied to the cuff. When the pressure change inside the pump matches the preset result, the airtightness of the pump meets the regulatory requirements for blood pressure monitors.

[0042] Understandably, pump-type blood pressure monitors typically use either an ascending or descending algorithm to measure blood pressure. Ascending measurement involves measuring blood pressure during inflation and immediately expelling the air from the cuff after measurement. The pressure regulating pump provided in this invention achieves stable inflation by integrating the pump and valve, reducing noise during inflation and improving user experience. Descending measurement involves gradual deflation. The pressure regulating pump provided in this invention achieves smooth inflation; however, for smooth deflation, a control valve is required outside the deflation channel 13 to regulate the smooth deflation of the cuff. Therefore, the pressure regulating pump provided in this invention can be used independently in ascending measurement blood pressure monitors or in conjunction with a control valve in descending measurement blood pressure monitors.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pneumatic pressure regulating pump, characterized in that, include: An air head assembly has a first connection hole, an air supply channel, and an air venting channel. It includes an air pump cover, a sealing gasket, and a canopy seat. The canopy seat has a through hole and an air passage groove. An air passage is formed between the air pump cover and the canopy seat. The sealing gasket is disposed in the air passage. The air passage communicates with the air passage groove, the air supply channel, and the air venting channel. An air filling and exhaust assembly includes a pump and a pump base. The pump includes an air inlet and is mounted on the pump base. The pump base is connected to the umbrella blade base. The pump has a connecting groove and a second connecting hole. The connecting groove, the second connecting hole, and the first connecting hole are coaxially arranged, and the diameter of the connecting groove is larger than the diameter of the second connecting hole. The first connecting hole, the second connecting hole, and the connecting groove together form an air intake channel. A drive component is connected to the inflation / deflation component; A fixing bolt passes through the air intake channel and is fixedly connected to the air head assembly and the pump base; A one-way valve is formed on the sealing gasket, and the one-way valve passes through the through hole to allow airflow to flow unidirectionally from the pump to the air passage.

2. The air pressure regulating pump as described in claim 1, characterized in that, The drive assembly includes a motor, a drive rod, a drive shaft, and a motor bracket. The two ends of the drive rod are respectively connected to the pump plate and the drive shaft. The motor is connected to the drive shaft and mounted on the motor bracket. A third connecting hole is formed on the motor bracket. The fixing bolt passes through the third connecting hole and is threaded to the pump plate seat.

3. The pneumatic pressure regulating pump as described in claim 2, characterized in that, The air head assembly, the pump base, and the motor bracket form a pump body space. The air filling and exhaust assembly and the drive assembly are installed in the pump body space, and the connecting groove communicates with the pump body space.

4. The air pressure regulating pump as described in claim 1, characterized in that, A boss is formed on the air pump cover, the boss is connected to the venting channel, and the boss and the umbrella blade seat form the air passage.

5. The air pressure regulating pump as described in claim 1, characterized in that, The pump includes multiple cylinders and a sealing diaphragm. The sealing diaphragm covers the cylinders and has vent holes that correspond to the cylinders.

6. The pneumatic pressure regulating pump as described in claim 5, characterized in that, The umbrella blade seat is provided with an air passage groove corresponding to the air vent, and the pump seat is provided with a side cavity hole and a side cavity channel. The air passage groove is connected to the air passage, the cylinder, the side cavity hole and the side cavity channel.

7. The air pressure regulating pump as described in claim 6, characterized in that, The sealing diaphragm has multiple sets of sealing lines and shut-off valves. The sealing lines are arranged around the vent and the shut-off valves. The shut-off valves are arranged corresponding to the side cavity. The sealing diaphragm has an air passage. The shut-off valve is arranged in the air passage and the air passage communicates with the side cavity.

8. The air pressure regulating pump as described in claim 7, characterized in that, The height of the shut-off valve is the same as the height of the sealing line.

9. The pneumatic pressure regulating pump as described in claim 5, characterized in that, The sealing gasket divides the air passage into a first air passage and a second air passage. The first air passage is connected to the venting passage, and the second air passage is connected to the air supply passage and the cylinder.

10. A blood pressure monitor, characterized in that, Includes a cuff, connecting tubing, a pressure sensor, and a pressure regulating pump as described in any one of claims 1-9. The cuff is connected to the air delivery channel of the air pressure regulating pump via a connecting pipe, and the pressure sensor is installed inside the cuff.

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