CN220769666U - Air pump assembly and electronic sphygmomanometer - Google Patents

Abstract

The utility model provides an air pump assembly, and relates to the technical field of air pump structures. The pump head is connected with the pump body, an air outlet buffer cavity is formed between the pump head and the pump body, and the pump head comprises an air charging port and a pressure relief port which are communicated with the air outlet buffer cavity; the electromagnetic valve comprises a movable valve core and a static valve core, the static valve core is connected to the pressure relief opening, an exhaust hole communicated with the air outlet buffer cavity is formed in the static valve core, the movable valve core is configured to be connected with the static valve core when the electromagnetic valve is electrified so that the exhaust hole is closed, and is separated from the static valve core when the electromagnetic valve is powered off so as to open the exhaust hole. The utility model also provides an electronic sphygmomanometer. Through the scheme of the utility model, the structure of the air pump component is more compact, the use of pipelines is reduced, the installation is convenient, and the installation space and the installation cost are saved.

Description

Air pump assembly and electronic sphygmomanometer

Technical Field

The utility model relates to the technical field of air pump structures, in particular to an air pump assembly and an electronic sphygmomanometer.

Background

At present, when the existing pressure air pump is applied to products such as electronic sphygmomanometers, the existing pressure air pump is matched with a quick air release valve and a slow air release valve, all components are generally connected by adopting a complex rubber hose, a tee joint or a four-way joint, the volume is large, the hose is also required to be bent to a specified angle when the components are assembled, and if an assembling operator carelessly works, the hose is sealed due to overlarge bending; in addition, the assembly requires a lot of labor hours, is labor-intensive, has a lot of connecting fittings, and is wasteful in terms of construction space and cost.

Disclosure of Invention

Therefore, the present utility model is directed to an air pump assembly, which solves the problem that the air pump assembly occupies a large space due to the complex structure of air charging and air discharging and the need of connecting multiple pipelines.

The utility model adopts the following scheme: the application provides an air pump assembly, which comprises a pump body, a pump head and an electromagnetic valve, wherein the pump head is connected with the pump body, an air outlet buffer cavity is formed between the pump head and the pump body, and the pump head comprises an air charging port and a pressure relief port which are communicated with the air outlet buffer cavity; the electromagnetic valve comprises a movable valve core and a static valve core, the static valve core is connected to the pressure relief opening, an exhaust hole communicated with the air outlet buffer cavity is formed in the static valve core, the movable valve core is configured to be connected with the static valve core when the electromagnetic valve is electrified so that the exhaust hole is closed, and is separated from the static valve core when the electromagnetic valve is powered off so as to open the exhaust hole.

Further, a sealing gasket is arranged between the movable valve core and the static valve core, and the sealing gasket is suitable for sealing the exhaust hole of the static valve core when the movable valve core is electrified.

Further, the static valve core is provided with a sealing inclined surface matched with the sealing gasket.

Further, the pump head is further provided with an air pressure sensing interface, one end of the air pressure sensing interface is communicated with the air outlet buffer cavity, and the other end of the air pressure sensing interface is connected to the air pressure sensor device.

Further, the pump head is fixedly connected with the pump body in an ultrasonic welding mode.

Further, a PCB control board is arranged on the pump body, and the electromagnetic valve is electrically connected to the PCB control board through a wire.

Further, the electromagnetic valve is locked on the pump head through a fixing screw.

The utility model also provides an electronic sphygmomanometer, which comprises the air pump assembly.

The beneficial effects are that:

according to the utility model, the inflation inlet, the pressure relief opening and the air pressure sensing interface are integrated on the same pump head, so that an integrated structure is realized, and the opening and closing of the pressure relief opening are controlled by arranging the matching of the movable valve core and the static valve core, so that the traditional integrated mode of combining the miniature air pump with the electromagnetic valve can reduce and optimize the structural space, simplify the assembly process of the sphygmomanometer and reduce the cost of the sphygmomanometer.

Drawings

FIG. 1 is a schematic view showing an exploded structure of an air pump assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of an air pump assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of an electromagnetic valve of an air pump assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic view showing another cross-sectional structure of an air pump assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic structural view of a static valve core of an air pump assembly according to an embodiment of the present utility model;

icon: solenoid valve 01, spool 0101, enameled wire 0102, frame 0103, iron sheet 0104, movable valve element 0105, sealing gasket 0106, static valve element 0107, sealing inclined plane 0108, exhaust hole 0109 set screw 02, pump head 03, gas outlet 0301, gas outlet buffer chamber 0302, gas inlet 0303, pump body 04, PCB control board 05, wire 06.

Detailed Description

Example 1

As shown in fig. 1 to 5, the present embodiment provides an air pump assembly, which includes a pump body 04, a pump head 03, and an electromagnetic valve 01, wherein the pump head 03 is connected to the pump body 04, and an air outlet buffer cavity 0302 is formed between the pump head 03 and the pump body 04, and the pump head 03 includes an air charging port and a pressure releasing port which are communicated to the air outlet buffer cavity 0302; the electromagnetic valve 01 comprises a movable valve core 0105 and a static valve core 0107, the static valve core 0107 is connected to the pressure relief opening, an exhaust hole 0109 communicated with the air outlet buffer cavity 0302 is formed in the static valve core 0107, the movable valve core 0105 is configured to be connected with the static valve core 0107 when the electromagnetic valve 01 is electrified so that the exhaust hole 0109 is closed, and is separated from the static valve core 0107 when the electromagnetic valve is powered off so that the exhaust hole 0109 is opened.

Referring to fig. 1 to 4, in this embodiment, the pump body 04 is an existing micro air pump, and includes an air outlet 0301 and an air inlet 0303, the pump head 03 is disposed at the top of the micro air pump, and is connected with the micro air pump by ultrasonic welding, and an air outlet buffer cavity 0302 is formed between the pump head 03 and the micro air pump, the air outlet buffer cavity 0302 is communicated with the air outlet 0301 of the micro air pump body 04, and when the pump body 04 generates air, the air enters the air outlet buffer cavity 0302, and the air bag is inflated through an inflation inlet on the pump head 03. The pump head 03 is integrated with an inflation inlet and an air pressure sensing interface, one end of the air pressure sensing interface is communicated with the air outlet buffer cavity 0302, and the other end of the air pressure sensing interface is connected to an air pressure sensor device, so that the air pressure at the inflation inlet can be measured and monitored in real time, and feedback is performed. The pump head 03 is further provided with a pressure relief opening, the pressure relief opening is communicated with the air outlet buffer cavity 0302 and used for discharging air when the air bag is exhausted, and the pressure relief opening is controlled to be opened and closed through the electromagnetic valve 01, so that the functions of rapid air release and slow air release can be realized. The bottom of the pump body 04 is also provided with a PCB control board for controlling the work of the micro air pump and the action of the electromagnetic valve 01.

As shown in fig. 3 to 4, in particular, in this embodiment, the solenoid valve 01 includes an outer frame 0103, and a spool 0101, an iron sheet 0104, an enameled wire 0102, a movable spool 0105, and a static spool 0107 disposed inside the outer frame 0103, wherein the movable spool 0105 and the static spool 0107 are fixed inside the spool 0101 and the iron sheet 0104, the enameled wire 0102 is wound outside the spool 0101, the movable spool 0105 is adapted to be displaced up and down in the spool 0101 by a distance so as to approach or separate from the static spool 0107, the static spool 0107 is fixed on the spool 0101 and the iron sheet 0104, an exhaust hole 0109 connected to the pressure relief port is formed inside the static spool 0107, and the other end of the exhaust hole 0109 may be connected to the outside atmosphere. The enameled wire 0102 is electrically connected to the PCB control board through a wire 06, when the enameled wire 0102 is electrified, the movable valve spool 0105 moves downwards to be close to the static valve spool 0107, so that the exhaust hole 0109 is plugged, the air flow is blocked, and when the enameled wire 0102 is powered off, the movable valve spool 0105 moves left and right in the exhaust hole 0109 under the air pressure, and is far away from the static valve spool 0107, so that air can be discharged. Here, the energizing and de-energizing of the enameled wire 0102 is controlled by the PCB control board, so that the deflation and inflation of the pump body 04 can be controlled by the PCB control board. The outer frame 0103 can be locked on the pump head 03 through a fixing screw 02, so that the pump head is convenient to disassemble and assemble.

As shown in connection with fig. 3 to 5, in a preferred embodiment, a gasket 0106 is provided between the movable spool 0105 and the static spool 0107, the gasket 0106 being adapted to block the vent 0109 of the static spool 0107 when the movable spool 0105 is energized. The sealing effect when the exhaust hole 0109 is closed can be improved by the gasket 0106. In another preferred embodiment, the static spool 0107 is provided with a sealing bevel 0108 that mates with the gasket 0106. The sealing inclined plane 0108 protrudes out of the upper end face of the static valve core 0107 and is inclined relative to the horizontal direction, so that when the movable valve core 0105 is far away from the static valve core 0107, a smaller air outlet channel is formed between the sealing gasket 0106 and the sealing inclined plane 0108, and the air outlet speed is reduced. Of course, the distance between the movable valve element 0105 and the static valve element 0107 can be controlled by controlling the current, so as to control the distance between the sealing gasket 0106 and the exhaust hole 0109, and further control the size of the opening of the exhaust hole 0109, so as to control the exhaust speed.

Example 2

The embodiment of the utility model also provides an electronic sphygmomanometer, which comprises the air pump assembly. Through this embodiment scheme for the structure of electronic sphygmomanometer is compacter, and is convenient for assemble, and during operation exhaust and inflatable control are more accurate, reduce and optimize the structure space, have reduced the cost of sphygmomanometer.

It should be understood that: the above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.

The description of the drawings in the embodiments above illustrates only certain embodiments of the utility model and should not be taken as limiting the scope, since other related drawings may be made by those of ordinary skill in the art without the benefit of the inventive faculty.

Claims (8)

1. An air pump assembly, includes the pump body, its characterized in that still includes: the pump head is connected with the pump body, an air outlet buffer cavity is formed between the pump head and the pump body, and the pump head comprises an air charging port and a pressure relief port which are communicated with the air outlet buffer cavity; the electromagnetic valve comprises a movable valve core and a static valve core, the static valve core is connected to the pressure relief opening, an exhaust hole communicated with the air outlet buffer cavity is formed in the static valve core, the movable valve core is configured to be connected with the static valve core when the electromagnetic valve is electrified so that the exhaust hole is closed, and is separated from the static valve core when the electromagnetic valve is powered off so as to open the exhaust hole.

2. The air pump assembly of claim 1, wherein a gasket is disposed between the movable and stationary spools, the gasket being adapted to seal off the vent holes of the stationary spool when the movable spool is energized.

3. The air pump assembly of claim 2, wherein the static valve core is provided with a sealing bevel that mates with the gasket.

4. The air pump assembly of claim 1, wherein the pump head is further provided with an air pressure sensing interface, one end of the air pressure sensing interface is communicated with the air outlet buffer cavity, and the other end of the air pressure sensing interface is connected to an air pressure sensor device.

5. The air pump assembly of claim 1, wherein the pump head is fixedly connected to the pump body by ultrasonic welding.

6. The air pump assembly according to claim 1, wherein a PCB control board is provided on the pump body, and the solenoid valve is electrically connected to the PCB control board through a wire.

7. The air pump assembly of claim 1, wherein the solenoid valve is secured to the pump head by a set screw.

8. An electronic blood pressure meter comprising the air pump assembly of any one of claims 1-7.