Automatic inflating and deflating integrated air pump for wrist sphygmomanometer

Abstract

The utility model discloses a wrist sphygmomanometer automatic inflating and deflating integrated air pump which comprises an upper cover, a flow guide plate, a pump box, a connecting sleeve and a motor, the lower portion of the connecting sleeve is fixedly connected with the motor through a bolt, a plastic rubber cup is fixedly arranged in the pump box, an output shaft of the motor is fixedly connected with an eccentric wheel, and the eccentric wheel is connected with a linkage piece in an inserted mode. A first vent hole is formed in the middle of the guide plate in an up-down penetrating mode, a second vent hole is formed in the middle of the plastic leather cup in an up-down penetrating mode, the first vent hole is communicated with the second vent hole, a valve is movably arranged below the plastic leather cup, the valve is connected with the plastic leather cup in an up-down sliding mode through a guide rod, and the valve blocks the second vent hole; the linkage piece is located under the valve and connected with the valve in an abutting mode, a connecting rod is integrally arranged at the lower end of the linkage piece, and a spiral chute is formed in the upper surface of the eccentric wheel. According to the utility model, inflation and deflation are integrated, the application convenience is improved, and the problem of high cost caused by deflation control through an electromagnetic valve is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air pumps, in particular to an integrated air pump for automatic inflation and deflation of a wrist blood pressure monitor. Background Technique

[0002] A micro air pump refers to a gas delivery device with a small volume and a gaseous working medium, which is mainly used for various purposes such as gas sampling, gas circulation, vacuum adsorption, vacuum pressure maintenance, air extraction, air injection, and pressure boosting. Micro air pumps are classified by application as: micro negative pressure pumps, micro vacuum pumps, micro gas circulation pumps, micro air pumps, micro gas sampling pumps, micro air injection pumps, micro air extraction pumps, micro air extraction and injection dual-purpose pumps, etc.; classified by working principle, there are diaphragm type, electromagnetic type, impeller type, piston type, etc. Generally, the micro air pumps widely used in industries such as medical and health, scientific research, laboratories, environmental protection, instrumentation, and chemical engineering mainly refer to micro vacuum pumps.

[0003] For example, a silent step-up blood pressure monitor air pump with the Chinese patent authorization publication number CN210371089U includes an air pump body. An air pump connection head is arranged at the bottom of the air pump body, a base is arranged above the air pump body, an additional air chamber is arranged on one side of the base away from the air pump body, and an exhaust through pipe is arranged inside the additional air chamber; through the settings of the air pump body, the air pump connection head, the base, the additional air chamber, and the exhaust through pipe, the overall performance of the air pump can be effectively improved, the negative impact brought by noise is avoided, and the overall practicability of the air pump is improved.

[0004] However, the above-mentioned existing technical solutions have the following defects: during the actual use of this air pump, it is necessary to cooperate with a solenoid valve or a manual valve separately to complete deflation, which is not convenient enough, and the structure with solenoid valve control will also increase the cost of the air pump.

[0005] Therefore, we propose an integrated air pump for automatic inflation and deflation of a wrist blood pressure monitor to facilitate solving the problems raised above. Content of the Utility Model

[0006] The purpose of the utility model is to provide an integrated air pump for automatic inflation and deflation of a wrist blood pressure monitor to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: an integrated air pump for automatic inflation and deflation of a wrist blood pressure monitor, including: an upper cover, a flow guide plate, a pump box, a connecting sleeve, and a motor. The connecting sleeve is fixedly connected to the motor by bolts below;

[0008] A plastic leather cup is fixedly arranged inside the pump box. The output shaft of the motor is fixedly connected to an eccentric wheel. The eccentric wheel is inserted with a linkage member, and the linkage member is connected to a thimble at the bottom of the plastic leather cup;

[0009] A first air vent is formed through the middle of the deflector in the up-and-down direction, and a second air vent is formed through the middle of the plastic leather cup in the up-and-down direction. The first air vent and the second air vent are communicated with each other.

[0010] A valve is movably arranged below the plastic leather cup. The valve is slidably connected to the plastic leather cup through a guide rod, and the valve blocks the second air vent.

[0011] The linkage member is located directly below the valve. The linkage member is connected to the valve at the top, and a connecting rod is integrally provided at the lower end of the linkage member.

[0012] A spiral chute is formed on the upper surface of the eccentric wheel. A conical column is arranged in the middle of the spiral chute. A baffle is integrally connected between the conical column and the side wall of the spiral chute. The baffle makes the spiral chute have two ends with different heights, one high and one low. The connecting rod is movably inserted into the spiral chute.

[0013] Preferably, the upper cover, the deflector, the pump box and the connecting sleeve are stacked in sequence from top to bottom, and the joints between the upper cover, the deflector and the pump box are sealed.

[0014] Preferably, an exhaust nozzle is arranged in the middle of the upper cover. The exhaust nozzle communicates the external and internal spaces, and the first air vent is communicated with the exhaust nozzle.

[0015] Preferably, a plug is fixedly arranged at the upper end of the valve, and the plug blocks the second air vent.

[0016] Preferably, a top cone is integrally provided at the upper end of the linkage member, and the top cone is connected to the valve at the top.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] A spiral chute is formed on the upper surface of the eccentric wheel. A conical column is arranged in the middle of the spiral chute. A baffle is integrally connected between the conical column and the side wall of the spiral chute. The baffle makes the spiral chute have two ends with different heights, one high and one low. The connecting rod is movably inserted into the spiral chute. When the connecting rod slides along the conical column to different ends of the spiral chute, the height of the connecting rod is adjusted. When the eccentric wheel rotates forward, the connecting rod slides to the higher end of the spiral chute, causing the entire linkage member to rise. The valve is lifted by the top cone, and the plug blocks the second air vent. Then the eccentric wheel continues to rotate, driving the linkage member to swing to realize the piston drive of inflation. When the eccentric wheel rotates in reverse, the connecting rod slides to the lower end of the spiral chute, and the entire linkage member descends. The top cone no longer applies a force to the valve. The external high pressure flows back through the exhaust nozzle, passes through the first air vent and the second air vent, and then pushes the plug away. The air pressure enters the pump box and the connecting sleeve along the second air vent. The connecting sleeve is provided with a vent hole to discharge the high-pressure gas, realizing the integration of inflation and deflation, improving the convenience of application, and solving the problem of high cost of controlling deflation through an electromagnetic valve. Description of the Drawings

[0019] Figure 1Schematic structural diagram of the present utility model;

[0020] Figure 2 Cross-sectional view of the pump box and the connecting sleeve in the present utility model;

[0021] Figure 3 Disassembly diagram of the deflector plate, plastic leather cup and valve in the present utility model;

[0022] Figure 4 Schematic structural diagram of the valve, linkage and eccentric wheel in the present utility model;

[0023] Figure 5 Schematic structural diagram of the eccentric wheel in the present utility model;

[0024] Figure 6 Disassembly diagram of the present utility model.

[0025] In the figure: 1. Upper cover; 11. Exhaust nozzle; 2. Deflector plate; 21. First air release hole; 3. Pump box; 4. Connecting sleeve; 5. Motor; 6. Plastic leather cup; 61. Second air release hole; 7. Valve; 71. Plug; 8. Linkage; 81. Top cone; 82. Connecting rod; 9. Eccentric wheel; 91. Spiral chute; 92. Flap; 93. Tapered column. Specific implementation mode

[0026] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-6 , the present utility model provides a technical solution: a wrist-type blood pressure monitor automatic inflation and deflation integrated air pump, including: an upper cover 1, a deflector plate 2, a pump box 3, a connecting sleeve 4 and a motor 5. The upper cover 1, the deflector plate 2, the pump box 3 and the connecting sleeve 4 are stacked from top to bottom in sequence and are fixedly connected in series by four screws. The joints between the upper cover 1, the deflector plate 2 and the pump box 3 are sealed;

[0028] The lower part of the connecting sleeve 4 is fixedly connected to the motor 5 by bolts to form the entire air pump main body.

[0029] A plastic leather cup 6 is fixedly arranged in the pump box 3. The output shaft of the motor 5 is fixedly connected to an eccentric wheel 9. A groove is formed on the upper surface of the eccentric wheel 9. A linkage 8 is obliquely inserted into the groove. The linkage 8 is connected to the top pin at the bottom of the plastic leather cup 6. By driving the eccentric wheel 9 to rotate by the motor 5, the linkage 8 is driven to swing, and then the top pin at the bottom of the plastic leather cup 6 moves up and down, thereby driving the plastic leather cup 6 to deform and extrude air.

[0030] An exhaust nozzle 11 is provided in the middle of the upper cover 1, and the exhaust nozzle 11 communicates with the external and internal spaces;

[0031] A first air vent 21 is provided through the upper and lower parts in the middle of the deflector 2, and a second air vent 61 is provided through the upper and lower parts in the middle of the plastic leather cup 6. The first air vent 21 and the second air vent 61 are communicated, and the first air vent 21 is communicated with the exhaust nozzle 11;

[0032] A valve 7 is movably arranged below the plastic leather cup 6. The valve 7 is slidably connected to the plastic leather cup 6 through a guide rod. A plug 71 is fixedly arranged at the upper end of the valve 7, and the plug 71 blocks the second air vent 61;

[0033] The linkage 8 is located directly below the valve 7, and a top cone 81 is integrally provided at the upper end of the linkage 8. The top cone 81 abuts against the valve 7, and a connecting rod 82 is integrally provided at the lower end of the linkage 8;

[0034] A spiral chute 91 is provided on the upper surface of the eccentric wheel 9. A conical column 93 is arranged in the middle of the spiral chute 91. A baffle 92 is integrally connected between the conical column 93 and the side wall of the spiral chute 91. The baffle 92 makes the spiral chute 91 have two ends, one high and one low. The connecting rod 82 is movably inserted into the spiral chute 91. When the connecting rod 82 slides along the conical column 93 to different ends of the spiral chute 91, the different heights of the connecting rod 82 are adjusted.

[0035] Working principle: When the eccentric wheel 9 rotates forward, the connecting rod 82 slides to the higher end of the spiral chute 91, causing the entire linkage 8 to rise. The valve 7 is lifted by the top cone 81, and the plug 71 blocks the second air vent 61. Then the eccentric wheel 9 continues to rotate, driving the linkage 8 to swing to realize the piston drive of inflation;

[0036] When the eccentric wheel 9 rotates reversely, the connecting rod 82 slides to the lower end of the spiral chute 91, and the entire linkage 8 descends. The top cone 81 no longer applies force to the valve 7. The external high pressure flows back through the exhaust nozzle 11, passes through the first air vent 21 and the second air vent 61, pushes the plug 71 away, and the air pressure enters the pump box 3 and the connecting sleeve 4 along the second air vent 61. The connecting sleeve 4 is provided with a vent hole to discharge the high-pressure gas, realizing deflation.

[0037] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wrist blood pressure monitor integrated automatic inflation and deflation air pump, comprising: An upper cover (1), a flow guide plate (2), a pump box (3), a connecting sleeve (4) and a motor (5), the connecting sleeve (4) is fixedly connected to the motor (5) by bolts below; A plastic leather cup (6) is fixedly arranged in the pump box (3), the output shaft of the motor (5) is fixedly connected to an eccentric wheel (9), the eccentric wheel (9) is inserted with a linkage member (8), and the linkage member (8) is connected to the thimble at the bottom of the plastic leather cup (6); It is characterized in that a first air vent hole (21) is formed through the middle of the flow guide plate (2) up and down, a second air vent hole (61) is formed through the middle of the plastic leather cup (6) up and down, and the first air vent hole (21) is communicated with the second air vent hole (61); A valve (7) is movably arranged below the plastic leather cup (6), the valve (7) is slidably connected to the plastic leather cup (6) up and down through a guide rod, and the valve (7) blocks the second air vent hole (61); The linkage member (8) is located directly below the valve (7), the linkage member (8) presses against the valve (7) at the top, and a connecting rod (82) is integrally provided at the lower end of the linkage member (8); A spiral chute (91) is formed on the upper surface of the eccentric wheel (9), a conical column (93) is arranged in the middle of the spiral chute (91), a baffle (92) is integrally connected between the conical column (93) and the side wall of the spiral chute (91), the baffle (92) makes the spiral chute (91) have two ends with one high and one low, and the connecting rod (82) is movably inserted into the spiral chute (91).

2. The automatic inflation and deflation integrated air pump for a wrist blood pressure monitor according to claim 1, characterized in that, The upper cover (1), the flow guide plate (2), the pump box (3) and the connecting sleeve (4) are stacked in sequence from top to bottom, and the joints between the upper cover (1), the flow guide plate (2) and the pump box (3) are sealed.

3. The automatic inflation and deflation integrated air pump for a wrist blood pressure monitor according to claim 2, characterized in that, An exhaust nozzle (11) is arranged in the middle of the upper cover (1), the exhaust nozzle (11) communicates the external and internal spaces, and the first air vent hole (21) is communicated with the exhaust nozzle (11).

4. The automatic inflation and deflation integrated air pump of a wrist blood pressure monitor according to claim 1, characterized in that, A plugging nail (71) is fixedly arranged at the upper end of the valve (7), and the plugging nail (71) blocks the second air vent hole (61).

5. An integrated air pump for automatic inflation and deflation of a wrist blood pressure monitor according to claim 1, wherein A top cone (81) is integrally provided at the upper end of the linkage member (8), and the top cone (81) presses against the valve (7).

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