Air pump and pressure measuring bracelet applying same

Abstract

The utility model discloses an air pump and a pressure measuring bracelet applying the same, the air pump (100) comprises a cover plate (10), a pressing plate (20) and an air cavity (40), and the cover plate (10) is provided with an air tap (11); the pressing plate (20) is provided with an exhaust through hole (21) and an air inlet passage (22), and the air cavity (40) is communicated with the exhaust through hole (21) and the air inlet passage (22); the air-tight diaphragm (30) covers the exhaust through hole (21), and the air-tight diaphragm (30) is further provided with an airflow port (31) staggered with the exhaust through hole (21); the eccentric wheel (60) is driven by the driving motor (70), so that the swing rod (50) ascends and descends in the air cavity (40), periodic compression and release of the air cavity (40) are completed, the air sealing diaphragm (30) elastically deforms and is separated from the exhaust through hole (21), and air in the air cavity (40) is transmitted to the air nozzle (11) from the exhaust through hole (21) through the airflow opening (31). The utility model has the advantages of simpler and more compact design, small volume and light weight.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wearing, especially a kind of air pump and the pressure measuring bracelet of application thereof. BACKGROUND

[0002] With the popularity of intelligent wearable devices, the requirement of blood pressure monitoring bracelet for miniature air pump is also higher and higher. At present, most of the traditional miniature air pumps mainly adopt the design of one-way valve, for example, the patent CN111980893A realizes sealing and exhaust through rubber one-way valve, however, such structure generally has problems of large volume, high noise, high energy consumption and the like, which also makes the volume of blood pressure monitoring bracelet increase, is not conducive to carrying and using;

[0003] There is also a diaphragm type air pump, which usually adopts a multi-layer composite diaphragm structure. Such structure is relatively complex in assembly and is not conducive to production. In the use process, the displacement between the multi-layer diaphragms is prone to occur, which leads to a decrease in sealing performance or failure, and is not conducive to long-term use and poor equipment durability. SUMMARY

[0004] The main purpose of the utility model is to provide a more compact, small and light air pump.

[0005] To achieve the above purpose, the utility model provides an air pump, which comprises a cover plate, wherein the cover plate has an air nozzle;

[0006] A pressing plate is provided, which has an air inlet channel and an air outlet through hole;

[0007] An air cavity is provided, which is in communication with the air inlet channel and the air outlet through hole. The air inlet channel is used to suck air into the air cavity, and the air outlet through hole is used to discharge air in the air cavity to the air nozzle;

[0008] A gas-tight diaphragm is further provided between the cover plate and the pressing plate, which covers the air outlet through hole, and the gas-tight diaphragm is further provided with an air flow port which is misaligned with the air outlet through hole;

[0009] A driving assembly is provided, which works to discharge air in the air cavity to the air inlet channel. The gas-tight diaphragm elastically deforms under the pressure of air and separates from the air outlet through hole. Air in the air cavity is transmitted to the air nozzle through the air flow port from the air outlet through hole.

[0010] Optionally, the gas-tight diaphragm is elastic and four corners are fixed between the cover plate and the pressing plate.

[0011] Optionally, one side of the cover plate towards the gas-tight diaphragm is provided with a groove, and the groove is correspondingly provided with the air flow port.

[0012] Optionally, the recess is in communication with the air nozzle, and the air-tight part is arranged corresponding to the recess.

[0013] Optionally, the pressing plate is further provided with an air inlet channel, the air inlet channel is in communication with the air cavity, and the air sucked by the air inlet hole enters the air cavity through the air inlet channel.

[0014] Optionally, the air-tight diaphragm has an air-tight part corresponding to the air exhaust through hole, the air flow port is arranged on the outer periphery of the air-tight part, and the air-tight part is elastically deformed under the pressure of the air cavity.

[0015] Optionally, the edge of the recess is provided with a first air-tight convex part protruding towards the air-tight diaphragm, and / or the pressing plate is provided with a second air-tight convex part matched with the air cavity.

[0016] Optionally, the air-tight diaphragm is in the shape of a sheet.

[0017] Optionally, the driving assembly comprises a swing rod, an eccentric wheel and a driving motor, the eccentric wheel is connected to the swing rod through a rotating shaft, the swing rod is arranged in the air cavity, and the driving motor drives the eccentric wheel to rotate.

[0018] Optionally, the air cavity is provided with an air inlet hole on the outside, and / or the air cavity has two and is arranged symmetrically.

[0019] Optionally, the air pump further comprises a supporting frame, the supporting frame is connected to the pressing plate, and the air cavity is arranged in the supporting frame.

[0020] Optionally, the air pump further comprises a fixed shell, the fixed shell is fixedly connected with the driving motor, and the motor shaft of the driving motor is connected to the eccentric wheel through a connecting hole of the fixed shell.

[0021] Optionally, the air pump further comprises a fixed spring, one end of the fixed spring is buckled to the cover plate, the other end of the fixed spring is buckled to the fixed shell, and the cover plate, the pressing plate, the fixed shell and the supporting frame are buckled between the two ends of the fixed spring.

[0022] Optionally, the fixed shell is provided with an inclined groove, the inclined groove is inclined through the bottom of the fixed shell and is in communication with the connecting hole.

[0023] The utility model further provides a pressure measuring bracelet, the pressure measuring bracelet comprises a ring body and an air bag, and the air pump of any one of the preceding aspects is connected to the air bag and arranged in the ring body.

[0024] The utility model discloses technical scheme through the tight gas diaphragm clamped between the cover plate and the pressing plate, the tight gas diaphragm seals the air cavity in the stationary state, and the elastic extension in the working state, and the air cavity links together with the air inlet air passage of the pressing plate, and the eccentric wheel is lifted and removed under the drive motor, and the air cavity is extruded under the action of eccentric wheel, and the air in the air cavity is discharged to the air inlet air passage, and when the certain pressure in the air cavity is reached, the tight gas diaphragm is opened and separated with the exhaust hole, and the air in the air cavity enters the external air bag through the airflow port, the air nozzle, realizes the inflation.

[0025] The elastic deformation force of the tight gas diaphragm realizes the reverse tight gas effect to the exhaust hole, and the gas flows through the air nozzle without pressure relief.

[0026] Due to the action of the swing rod, when the eccentric wheel rotates to the other side, the air cavity volume increases after completing the inflation, and the external air is sucked into the containing cavity through the air inlet chute, and then enters the air cavity through the air inlet air passage after the first air inlet hole and the second air inlet hole, and a gas return action is completed.

[0027] The process is repeated in a periodic form when the motor continues to run, and the left and right air cavities are alternately inflated and returned, so that continuous air pumping under the sealed structure is realized, and the elasticity of the one-piece tight gas diaphragm simplifies the overall structure, which not only ensures the working efficiency of the air pump, but also realizes the compactness of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in the drawings without creative labor for those skilled in the art.

[0029] Figure 1 It is the structure diagram of the utility model subject air pump 100;

[0030] Figure 2 It is the explosion diagram of the utility model air pump 100;

[0031] Figure 3 It is the sectional view of the utility model air pump 100;

[0032] Figure 4 It is the structure diagram of the utility model cover plate 10, pressing plate 20 and tight gas diaphragm 30;

[0033] Figure 5 It is the structure diagram of the utility model air cavity 40, support frame 80 and fixed shell 90;

[0034] Figure 6The structure diagram of the air cavity 40 and the supporting frame 80 is shown in the utility model.

[0035] Figure 7 The structure diagram of the fixed shell 90 and the driving motor 70 is shown in the utility model.

[0036] Explanation of reference numerals:

[0037] Reference Name Reference Name 100 Air pump 41 Second air inlet through hole 10 Cover plate 42 Non-return flap 11 Air nozzle 50 Swing rod 12 Groove 60 Eccentric wheel 13 First air-tight convex part 61 Rotating shaft 20 Pressing plate 70 Driving motor 21 Exhaust through hole 80 Support frame 22 Air inlet air passage 81 Accommodation groove 23 Second air-tight convex part 82 First air inlet through hole 30 Air-tight diaphragm 90 Fixed shell 31 Air flow port 91 Air inlet chute 32 Air-tight part 92 Accommodation cavity 40 Air cavity 93 Fixed elastic sheet

[0038] The utility model realizes the purpose, functional characteristics and advantages, which will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0040] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0041] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is also not within the protection scope required by the utility model.

[0042] Miniature air pumps are widely used in gas delivery, gas detection, medical devices (such as breathing machines), air filters and other equipment. Traditional miniature air pumps mainly adopt a piston structure, which generally has problems of large volume, high noise and high energy consumption. Some air pumps use a diaphragm structure, which usually adopts a multi-layer composite diaphragm structure. Although miniaturization is achieved to some extent, the diaphragm layers are prone to misalignment due to the complex assembly process, which leads to a decline in sealing performance or failure during use, and the air leakage phenomenon is prone to occur after long-term use.

[0043] Therefore, the application of the micro air pump in the bracelet requires that the micro air pump is not only small in size and compact in assembly, but also has stable air flow and durability, and is not affected by shaking or wearing errors during wearing.

[0044] To solve the above problems, the utility model provides a kind of air pump 100, refer to Figure 1 By adopting the structure of one-piece air-tight diaphragm 30 with simple design, and setting the air-tight diaphragm 30 between the cover plate 10 and the pressing plate 20, the connection of the air-tight diaphragm 30 with other structures is strengthened, the number of parts is reduced, the size and weight of the air pump 100 are reduced, and the assembly process is simplified.

[0045] The air pump 100 provided by the utility model, refer to Figure 2 And Figure 3 The air pump 100 comprises a cover plate 10, a pressing plate 20, an air-tight diaphragm 30, an air cavity 40 and a driving assembly, the cover plate 10 has an air nozzle 11 to discharge air flow, the air nozzle 11 can be connected with external equipment such as air bag and air pipe to inflate it, as shown in Figure 4 The pressing plate 20 has an air exhaust hole 21 and an air inlet channel 22, both of which are communicated with the air cavity 40, the air inlet channel 22 is arranged at the bottom of the pressing plate 20 and extends to the air cavity 40 to communicate with it, and the air inlet channel 22 is mainly used for inhaling air to supply air to the air cavity 40, and the air exhaust hole 21 is used for discharging air in the air cavity 40 to the air nozzle;

[0046] Further, the air-tight diaphragm 30 is arranged between the cover plate 10 and the pressing plate 20 and covers the air nozzle 11 and the air exhaust hole 21 to seal them when they are static, the air-tight diaphragm 30 has an air flow port 31 which is misaligned with the air exhaust hole 21, the air-tight diaphragm 30 is separated from the air exhaust hole 21 after elastic deformation caused by air pressure, the air flow port 31 forms a gas flow path with the air exhaust hole 21 and the air nozzle 11, so that the air in the air cavity 40 is sequentially conveyed to the external air bag through the air exhaust hole 21, the air flow port 31 and the air nozzle 11;

[0047] The one-piece air-tight diaphragm 30 realizes miniaturization and simple structure of the air pump 100, has good inflation and exhaust performance through the designed gas flow path, simplifies the assembly process while realizing the function, is more suitable for application in space-limited application scenarios such as blood pressure measuring bracelet and smart watch, meets the demand of gas exchange and air tightness, and avoids the problems of traditional one-way valve such as many parts and complex structure.

[0048] Preferably, the cover plate 10 is provided with a groove 12 on the side facing the air-tight diaphragm 30, the groove 12 is in communication with the air nozzle 11 and is provided corresponding to the air flow port 31 and the exhaust vent 21 to buffer the air flow, which can provide a space for the elastic movement of the air-tight diaphragm 30 and a buffer space for discharging gas at the same time;

[0049] The air-tight diaphragm 30 has an air-tight part 32 in the center, which is in close contact with the exhaust vent 21, and the four corners of the air-tight diaphragm 30 are fixed between the cover plate 10 and the pressing plate 20 by screws or other means. In this way, when the middle part of the air-tight diaphragm 30 is elastically deformed due to air pressure and bends towards the air nozzle 11 or the groove 12, the four corners are fixed to generate a force pulling the air-tight diaphragm 30 back, so that after the rebound, it forms a reverse air-tightness to the air flow (i.e. to prevent the gas discharged from the air inlet duct 22 from flowing back into the air cavity 40);

[0050] Preferably, a first air-tight protrusion 13 for air-tightness can be provided on the edge of the groove 12, which protrudes towards the air-tight diaphragm 30 and cooperates with the air-tight diaphragm 30 to close and air-tight, which enhances the air-tightness compared to the previous one, realizes the interference fit of the elastic film material (air-tight diaphragm 30) and the hard rubber assembly (first air-tight protrusion 13), and meets the air-tightness requirement of the air pump 100.

[0051] Similarly, the pressing plate 20 is provided with a second air-tight protrusion 23 adapted to the air cavity 40, which forms an air-tightness with the opening of the air cavity 40 to prevent air leakage of the air cavity 40 and improve the air-tightness between the two and the overall structure.

[0052] Optionally, the air-tight diaphragm 30 is in the form of a sheet and is made of elastic material such as silica gel, TPU, rubber film, etc., so that the whole is light and thin and the structure is simple and easy to assemble;

[0053] Optionally, the air flow port 31 is provided with a plurality of air flow ports and is annularly arranged on the outer periphery of the air-tight part 32 to increase the gas transmission efficiency.

[0054] Specifically, referring to Figure 5 and Figure 6 , the fixed shell 90 is a containing cavity 92 with an opening, and the bottom thereof is provided with an air inlet inclined groove 91 which is used to communicate the containing cavity 92 with the outside and transmit the outside air into the containing cavity 92, and the air can be sucked through the two ends of the air inlet inclined groove 91 to meet the air flow requirement, the support frame 80 is provided with a first air inlet hole 82, the air cavity 40 is provided with a second air inlet hole 41 with a check valve 42, and the first air inlet hole 82 and the second air inlet hole 41 are arranged corresponding to each other, and the second air inlet hole 41 is in communication with the air inlet duct 22;

[0055] When the air cavity 40 generates negative pressure suction, the external gas in the suction containing cavity 92 passes through the first air inlet hole 82, the second air inlet hole 41 and the air inlet air duct 22 in sequence and then enters the air cavity 40;

[0056] When the air cavity 40 is compressed by the pump, the pressure in the air cavity 40 increases to a certain extent, so that the air-tight diaphragm 30 is separated from the air outlet hole 21 due to elastic deformation of the air pressure, and the air in the air cavity 40 is transmitted to the air nozzle 11 through the air outlet hole 21 and the air flow port 31.

[0057] Among them, the check valve 42 can prevent the backflow of gas into the first air inlet hole 82 and the containing cavity 92;

[0058] The driving assembly includes a swing rod 50, an eccentric wheel 60 and a driving motor 70. The eccentric wheel 60 is connected to the swing rod 50 through a rotating shaft 61. The swing rod 50 is arranged in the air cavity 40 to realize extrusion and release of the space in the air cavity 40. The driving motor 70 is connected to the eccentric wheel 60 through a motor shaft and drives the eccentric wheel 60 to rotate, so that the swing rod 50 moves up and down in the air cavity 40 to generate pressure or negative pressure in the air cavity 40, realizing pumping or suction;

[0059] Preferably, the air cavity 40 has two and is symmetrically arranged. The alternating work of the symmetric double air cavities 40 effectively reduces the airflow fluctuation, and the output airflow is more continuous and stable. Compared with the single air cavity 40, the output efficiency is improved, and the overall structure of the air pump 100 is more stable.

[0060] Therefore, the air outlet hole 21 and the air-tight part 32 are both provided with two and are symmetrically arranged, so that the overall structure is more stable and the flow of gas is ensured. The second air inlet hole 41 is provided with two and is symmetrically arranged between the left and right air cavities.

[0061] Specifically, the gas-tight diaphragm 30 is clamped between the cover plate 10 and the pressing plate 20, and covers the air nozzle 11 and the exhaust hole 21, and in the static state, the air nozzle 11 and the air cavity 40 are closed; in the working process, the driving motor 70 is started to drive the eccentric wheel 60 to rotate, and the swing rod 50 is alternately compressed on the left and right sides of the air cavity 40 under the action of the eccentric wheel 60, and through the extrusion of one side of the air cavity 40, the air cavity 40 reaches a certain pressure to open the gas-tight diaphragm 30, and the gas in the air cavity 40 enters the external air bag through the exhaust hole 21, the air flow port 31 and the air nozzle 11 in turn, realizes inflation, and the elastic recovery of the gas-tight diaphragm 30 makes the gas-tight diaphragm 30 realize reverse gas-tight effect, and the gas flows to the air nozzle 11 without pressure relief, preventing gas backflow; at the same time, the volume of the other side of the air cavity 40 increases, generating negative pressure, and the external air is sucked from the air inlet chute 91 and the second air inlet hole 41 and enters the air cavity 40 through the air inlet duct 22, completing the air return; through the continuous operation of the driving motor 70, the rotation of the eccentric wheel 60 makes the swing rod 50 at both ends change, and the left and right air cavities change periodically to realize continuous pumping and improve work efficiency.

[0062] Based on the foregoing embodiment, in this embodiment, an assembly method is also provided: the support frame 80 is connected to the pressing plate 20, the air cavity 40 is arranged in the accommodating groove 81 in the support frame 80 to provide support for the air cavity 40, and the periphery of the fixed shell 90 is connected to the support frame 80, so that the support frame 80, the cover plate 10, the pressing plate 20 and the fixed shell 90 are connected integrally as a whole.

[0063] The fixed shell 90 is fixedly connected with the driving motor 70 and is locked by a screw, and the motor shaft of the driving motor 70 is connected to the eccentric wheel 60 through the connecting hole of the fixed shell 90. Figure 7

[0064] The air pump 100 further comprises two fixed elastic sheets 93, which are arranged on the two sides of the cover plate 10 respectively, one end of each fixed elastic sheet 93 is buckled to the cover plate 10, and the other end is buckled to the fixed shell 90, the cover plate 10, the pressing plate 20, the fixed shell 90 and the support frame 80 are buckled between the two ends of the fixed elastic sheet 93 and are pressed tightly, so that the overall structure is further fixed and tightly connected.

[0065] By connecting the cover plate 10, the pressing plate 20, the support frame 80 and the fixed shell 90 into an overall structure, the cover plate 10 and the pressing plate 20 are fixedly connected, the gas-tight diaphragm 30 is connected between the two, the support frame 80 is fixedly connected with the pressing plate 20, the fixed shell 90 is fixedly connected with the support frame 80, and the driving motor 70 is fixedly connected with the fixed shell 90, so that the overall structure is tightly connected, and the fixed elastic sheet 93 is used to press it tightly, further strengthening the connection strength of the overall structure, and reducing vibration and prolonging service life.

[0066] ​The utility model discloses still a kind of pressure measuring bracelet, pressure measuring bracelet includes ring body and air bag;And the air pump 100 of above-mentioned all embodiments, the specific structure of the pressure measuring bracelet refers to above-mentioned embodiment, since the present pressure measuring bracelet has adopted all technical solutions of above-mentioned all embodiments, thus at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer repeat.

[0067] Wherein, air pump 100 is arranged in the air bag connection in ring body, ring body is used to wear in user, in use process, air pump 100 compressed gas is guided to pressure measuring bracelet air bag, realizes the inflation and deflation when blood pressure measurement.

[0068] Optionally, ring body can be provided with other modules, for example, electronic watch, mechanical watch, smart watch, etc.

[0069] The above-mentioned is only the preferred embodiment of the utility model, and not therefore limit the patent range of the utility model, is equivalent to the structure transformation made in the utility model's inventive concept, using the utility model specification and the content of drawing, or direct / indirectly applied in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A gas pump (100), characterized in that The utility model provides a kind of air valve, including Cover plate (10), the cover plate (10) has air nozzle (11); Pressing plate (20), the pressing plate (20) has air inlet air channel (22) and exhaust hole (21); Air cavity (40), the air cavity (40) is communicated with the air inlet air channel (22) and the exhaust hole (21);The air inlet air channel (22) is used to inhale air to the air cavity (40), and the exhaust hole (21) is used to exhaust air in the air cavity (40) to the air nozzle (11); The cover plate (10) and the pressing plate (20) are further provided with air-tight diaphragm (30), the air-tight diaphragm (30) covers on the exhaust hole (21), and the air-tight diaphragm (30) is further provided with air flow port (31) with the exhaust hole (21) each other dislocation; Driving assembly, the driving assembly works makes air in the air cavity (40) exhaust to the air inlet air channel (22);Air-tight diaphragm (30) is elastically deformed under the pressure of air, and separates from the exhaust hole (21);Air in the air cavity (40) is transmitted to the air nozzle (11) by the exhaust hole (21) through the air flow port (31).

2. The gas pump (100) of claim 1, wherein The cover plate (10) is provided with recess (12) towards the air-tight diaphragm (30), and the recess is correspondingly provided with the part of the air-tight diaphragm (30) covering the through hole (21).

3. The gas pump (100) of claim 2, wherein The recess (12) is communicated with the air nozzle (11).

4. The gas pump (100) of claim 2, wherein, The edge of the recess (12) is provided with the first air-tight convex part (13) protruding towards the air-tight diaphragm (30);And / or, the pressing plate (20) is provided with the second air-tight convex part (23) matched with the opening of the air cavity (40).

5. The gas pump (100) of claim 2, wherein, The part of the air-tight diaphragm (30) covering the exhaust hole (21) is air-tight part (32), the air flow port (31) is arranged on the outer periphery of the air-tight part (32), and the air-tight part (32) is elastically deformed under the pressure of the air cavity (40) and separates from the exhaust hole (21).

6. The gas pump (100) according to claim 1 or 2, characterized in that Further comprising fixed shell (90) and support frame (80);The fixed shell (90) is the accommodating cavity (92) with opening, and the support frame (80) is arranged at the opening of the fixed shell (90), and the air cavity (40) is arranged on the support frame (80); The surface of the fixed shell (90) is provided with air inlet chute (91), and the air inlet chute (91) is used to communicate the accommodating cavity (92) and outside, and the support frame (80) is provided with first air inlet through hole (82), and the air cavity (40) is provided with second air inlet through hole (41) with check sheet (42);The second air inlet through hole (41) is communicated with the air inlet air channel (22); The driving assembly works so that the gas in the accommodating cavity (92) enters the air cavity (40) in sequence through the first air inlet through hole (82), the second air inlet through hole (41) and the air inlet air channel (22).

7. The gas pump (100) of claim 6, wherein The air pump (100) further comprises a fixed spring (93), one end of the fixed spring (93) is buckled to the cover plate (10), the other end of the fixed spring (93) is buckled to the fixed shell (90), the cover plate (10), the support frame (80), the pressing plate (20) and the fixed shell (90) are buckled between the two ends of the fixed spring (93).

8. The gas pump (100) according to any one of claims 1 to 5, characterized in that The air cavity (40) has left and right two which are symmetrically arranged.

9. The gas pump (100) according to any one of claims 1 to 5, characterized in that The driving assembly comprises a swing lever (50), an eccentric wheel (60) and a driving motor (70), the eccentric wheel (60) is connected to the swing lever (50) through a rotating shaft (61), the swing lever (50) is arranged in the air cavity (40), and the driving motor (70) drives the eccentric wheel (60) to rotate.

10. A pressure measuring bracelet, characterized in that The pressure measuring bracelet comprises a ring body and an air bag; and The air pump (100) as claimed in any one of claims 1 to 5 is connected to the air bag and arranged in the ring body.

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