Exhaust device, air pump and electronic sphygmomanometer

Abstract

The utility model provides an exhaust device, an air pump and an electronic sphygmomanometer, and relates to the technical field of machinery. Specifically, the exhaust device comprises a pump base, a pump cover and an air bag. The air bag penetrates through the pump cover so that the air bag can be connected with the driving device conveniently. On the basis, the pump seat is provided with a buffer channel; the pump cover is provided with a diversion channel and an exhaust channel. Moreover, the opening end of the air bag is connected with the pump cover and communicates with the buffering channel through the flow guide channel so that air can be conveyed into the buffering channel. The buffer channel is used for slowing down the flow rate of the gas and can weaken collision of the gas in the exhaust process, so that the beneficial effects that noise reduction treatment is effectively achieved, and the use comfort feeling of a user is improved are achieved. Afterwards, due to the fact that the exhaust channel is communicated with the buffering channel, the gas with the flow speed reduced is exhausted from the exhaust device, and the overall noise in the operation process of the exhaust device is weakened.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and in particular to an exhaust device, an air pump and an electronic sphygmomanometer. Background Art

[0002] Air pumps are widely used in the medical field. In the existing technology, the working principle of an air pump is generally to suck gas into the pump body, compress it, and then push it directly to the external environment.

[0003] However, due to the short air flow channel, the vibration and noise inside the air pump cannot be reduced, causing the air pump to make a loud noise during operation. Utility Model Content

[0004] The purpose of the utility model is to provide an exhaust device, an air pump and an electronic sphygmomanometer, which can effectively achieve noise reduction processing and improve the user's comfort.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In a first aspect, the present invention provides an exhaust device, comprising:

[0007] The pump seat is provided with a buffer channel, and the buffer channel is used to slow down the gas flow rate;

[0008] The pump cover is provided with a guide channel and an exhaust channel, and the exhaust channel is connected to the buffer channel;

[0009] The air bag penetrates the pump seat, and the open end of the air bag is connected to the pump cover and communicates with the buffer channel through the diversion channel.

[0010] In an optional embodiment, the buffer channel includes a direct current zone and a bypass zone, the direct current zone connects the guide channel and the exhaust channel, the bypass zone is connected to the direct current zone, and the gas passing through the bypass zone will act on the gas passing through the direct current zone.

[0011] In an optional embodiment, the bypass area includes a first protrusion and a second protrusion, the second protrusion and the first protrusion are arranged correspondingly and together form a curved groove, both ends of the curved groove are connected to the direct current area and are curved toward the guide channel.

[0012] In an optional embodiment, the first bump includes a first end portion close to the guide channel, a second end portion close to the exhaust channel, and a transition portion formed between the first end portion and the second end portion, and the cross-sectional size of the transition portion gradually decreases toward the direction close to the guide channel.

[0013] In an optional embodiment, the number of the bypass areas is at least two, and all the bypass areas are arranged at intervals on one side or both sides of the direct flow area along a direction close to the exhaust channel.

[0014] In an optional embodiment, the number of the airbags is two, the buffer channel and the guide channel correspond to the airbags one-to-one, and the exhaust channel connects the two buffer channels.

[0015] In an optional embodiment, the exhaust device also includes a connector connecting the two airbags, and the connector is provided with a first through groove and two second through grooves, and the exhaust channel is connected to the buffer channel through the first through groove, and the guide channel is connected to the buffer channel through the second through groove.

[0016] In an optional embodiment, the connecting member further includes a blocking piece corresponding one-to-one to the second through-groove, and the blocking piece is connected to the groove wall of the second through-groove and blocks one end of the guide channel connected to the second through-groove.

[0017] In a second aspect, the utility model provides an air pump, comprising the exhaust device of the aforementioned embodiment and a driving device, wherein the driving device is drivingly connected to the exhaust device.

[0018] In a third aspect, the present invention provides an electronic sphygmomanometer, comprising the air pump of the aforementioned embodiment and a cuff connected to the air pump.

[0019] The beneficial effects of the embodiments of the present utility model are:

[0020] The present application provides an exhaust device, an air pump and an electronic sphygmomanometer. The exhaust device includes a pump seat, a pump cover and an airbag. The airbag is provided through the pump cover to facilitate connection with the drive device. On the basis of the above, the pump seat is provided with a buffer channel; the pump cover is provided with a guide channel and an exhaust channel. In addition, the open end of the airbag is connected to the pump cover and is connected to the buffer channel through the guide channel to transport the gas into the buffer channel. Since the buffer channel is used to slow down the flow rate of the gas, it can reduce the collision of the gas during the exhaust process, thereby achieving the beneficial effect of effectively realizing noise reduction processing and improving the user's comfort. Afterwards, since the exhaust channel is connected to the buffer channel, the gas with a slowed flow rate is discharged from the exhaust device, so that the overall noise during the operation of the exhaust device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of an air pump provided in an embodiment of the present utility model;

[0023] Figure 2 A schematic diagram of an explosion of an air pump provided in an embodiment of the present utility model;

[0024] Figure 3 A schematic diagram of an exhaust device provided in an embodiment of the present utility model;

[0025] Figure 4 An explosion diagram of the exhaust device provided in an embodiment of the present utility model;

[0026] Figure 5 A schematic diagram of a pump seat provided in an embodiment of the present utility model;

[0027] Figure 6 A schematic diagram of a pump cover provided in an embodiment of the present utility model;

[0028] Figure 7 The embodiment of the present invention provides Figure 5 A magnified schematic diagram of point A in the middle;

[0029] Figure 8 A schematic diagram of an airbag and a connecting member provided in an embodiment of the present utility model;

[0030] Figure 9 Another schematic diagram of the airbag and the connecting piece provided in an embodiment of the present utility model.

[0031] Icons: 1-air pump; 10-exhaust device; 100-pump seat; 110-buffer channel; 111-flow zone; 121-first protrusion; 1211-first end; 1212-transition portion; 1213-second end; 122-bend groove; 123-second protrusion; 113-DC zone; 300-pump cover; 310-flow guide channel; 330-exhaust channel; 500-air bag; 600-connecting part; 610-first through groove; 630-second through groove; 650-blocking piece; 700-fastening screw; 30-driving device; 31-motor; 32-motor bracket; 33-motor screw; 34-driving shaft; 35-steel ball; 36-steel needle; 37-driving rod. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0037] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] Example

[0039] This embodiment of the present invention provides an electronic blood pressure monitor comprising an air pump 1 and a cuff connected to the air pump 1. Specifically, the air pump 1 provides the power for inflating and deflating the cuff. In the electronic blood pressure monitor, air pump 1 inflates the cuff, compressing the arteries. Blood pressure is then measured by observing the change in pressure within the cuff during deflation.

[0040] Accordingly, if Figure 1 As shown, the present application provides an air pump 1 for use in the above-mentioned electronic blood pressure monitor, comprising an exhaust device 10 and a drive device 30, wherein the drive device 30 is drivingly connected to the exhaust device 10. It is understood that during the working cycle of the air pump 1, the drive device 30 and the exhaust device 10 work together to achieve continuous compression and circulation of gas through continuous suction and exhaust processes.

[0041] In this embodiment, Figure 2 As shown, the driving device 30 specifically includes a motor 31, a motor bracket 32, a motor screw 33, a driving shaft 34, a steel ball 35, and a driving rod 37. The motor 31 is located at the end of the air pump 1 and is used to provide power to the air pump 1; the motor bracket 32 is connected to the motor 31 via the motor screw 33, and the motor bracket 32 is provided with an air intake buffer structure that allows gas to enter the air pump 1 to achieve the purpose of reducing noise.

[0042] Based on the above, the drive shaft 34 is connected to the motor 31 and performs a circular motion under the action of the motor 31; the steel ball 35 cooperates with the drive shaft 34 and is connected to the steel needle 36; the drive rod 37 is connected to the steel needle 36 and is connected to and acts on the exhaust device 10. Therefore, along with the circular motion of the drive shaft 34, the drive rod 37, steel ball 35, and steel needle 36 perform a piston motion as a whole, thereby transmitting the gas into the exhaust device 10, achieving continuous compression and circulation of the gas.

[0043] It should be noted that the air pump 1 is not only used in electronic blood pressure monitors, but can also be used in medical devices such as medical pneumatic tourniquets or nebulizers. In addition, it should be noted that the exhaust device 10 mentioned above, while ensuring the exhaust function, is also designed with a buffered air outlet structure, which can achieve the beneficial effect of reducing the noise of the air pump 1 during exhaust and improving the user experience comfort.

[0044] The specific structures of the various components of the exhaust device 10 provided in this embodiment and the corresponding relationships between them will be described in detail below. Figure 3 This is a schematic diagram of an exhaust device 10 provided in an embodiment of the present utility model. Figure 4 This is an explosion diagram of the exhaust device 10 provided in an embodiment of the present utility model.

[0045] See also Figure 3 and Figure 4 The present application provides an exhaust device 10, comprising a pump base 100, a pump cover 300, and an airbag 500. The airbag 500 penetrates the pump cover 300 to facilitate connection with the drive device 30, and under the action of the drive device 30, periodically expands and compresses to achieve stable output of gas.

[0046] On the basis of the above, if Figure 5 As shown, the pump seat 100 is provided with a buffer channel 110; Figure 6 As shown, the pump cover 300 is provided with a guide channel 310 and an exhaust channel 330 . In addition, the open end of the air bag 500 is connected to the pump cover 300 and communicates with the buffer channel 110 through the guide channel 310 to transport gas into the buffer channel 110 .

[0047] Since the buffer channel 110 is used to slow down the gas flow rate, it can reduce the collision of the gas during the exhaust process, thereby effectively achieving the beneficial effect of noise reduction and improving user comfort. Afterwards, the exhaust channel 330 is connected to the buffer channel 110, and the gas is discharged from the exhaust device 10.

[0048] It should be noted that the arrangement of the pump base 100, pump cover 300, and airbag 500 in this application clearly defines the airflow path, ensuring the sealing performance of the exhaust device 10 and achieving the beneficial effect of preventing gas leakage. In particular, the design of the airbag 500 replaces the umbrella leaves and umbrella leaf seats used to form the sealed air cavity, thereby avoiding the noise generated by the flapping of the umbrella leaves and umbrella leaf seats, and simultaneously reducing the volume of the exhaust device 10 and the volume of the pump using the exhaust device 10.

[0049] It should also be noted that the exhaust device 10 provided herein also includes a fastening screw 700, which can sequentially pass through the pump base 100, the air bag 500, and the pump cover 300 to achieve the beneficial effect of fastening the three together, thereby preventing gas leakage from the gaps between the three and affecting the exhaust effect. Furthermore, the assembly of the pump base 100, the air bag 500, the pump cover 300, and the fastening screw 700 is simple and has low production costs.

[0050] See also Figure 5 , Figure 5 Schematic diagram of the pump base 100 provided by an embodiment of the present invention. In some embodiments, the buffer channel 110 includes a direct flow area 113 and a bypass flow area 111. The direct flow area 113 communicates with the guide channel 310 and the exhaust channel 330, and the bypass flow area 111 communicates with the direct flow area 113.

[0051] It is understood that, based on the aforementioned configuration of the direct flow region 113 and the bypass flow region 111, the buffer channel 110 is designed as a Tesla valve structure, which also includes curves and straights. Accordingly, the buffer channel 110 also operates on the same principle as the Tesla valve: when fluid flows through the Tesla valve in the forward direction, the fluid encounters less resistance, while when fluid flows through the Tesla valve in the reverse direction, the fluid encounters greater resistance.

[0052] In this application, gas passing through bypass zone 111 acts on gas passing through direct flow zone 113. This means that the gas flows through the Tesla valve in reverse, similar to a fluid, through buffer channel 110, thereby experiencing greater resistance and slowing down the flow rate. This slowed flow rate also reduces the likelihood of gas colliding with exhaust device 10 during subsequent exhaust, effectively reducing exhaust noise.

[0053] In order to enhance the effect of slowing down the gas flow rate, the number of the bypass areas 111 is at least two, and all the bypass areas 111 are spaced apart and arranged on one side or both sides of the direct flow area 113 along the direction close to the exhaust channel 330. For example, when the number of the bypass areas 111 is two, it can be as follows: Figure 5 As shown, they are alternately arranged on both sides of the DC zone 113 , and can also be arranged at intervals on one side of the DC zone 113 .

[0054] See also Figure 7 , Figure 7 for Figure 5 In the enlarged diagram at point A, the bypass area 111 includes a first protrusion 121 and a second protrusion 123. The second protrusion 123 corresponds to the first protrusion 121 and together form a curved groove 122. Both ends of the curved groove 122 communicate with the direct flow area 113 and curve toward the flow guide channel 310, thereby facilitating mutual obstruction between gases as they flow from the flow guide channel 310 to the exhaust channel 330.

[0055] As an optional embodiment, the first protrusion 121 includes a first end 1211 close to the guide channel 310, a second end 1213 close to the exhaust channel 330, and a transition portion 1212 formed between the first end 1211 and the second end 1213, and the cross-sectional size of the transition portion 1212 gradually decreases toward the direction close to the guide channel 310.

[0056] In other words, the first protrusion 121 is teardrop-shaped, and the first end 1211, as the end with a smaller curvature, is positioned closer to the flow channel 310 to guide the gas flow toward the second end 1213. The second end 1213, as the end with a larger curvature, is positioned closer to the exhaust channel 330 to further slow the gas flow. Furthermore, it should be noted that the first protrusion 121 can optionally be connected to the bottom wall of the buffer channel 110, and the second protrusion 123 can be connected to the side wall of the buffer channel 110 and have a shape corresponding to the second end 1213, thereby forming the curved groove 122.

[0057] like Figure 4As shown, there are two airbags 500. Under the action of the aforementioned drive device 30, the two airbags 500 alternately perform the suction and exhaust functions, improving the operating efficiency of the air pump 1. Furthermore, the buffer channel 110 and the flow guide channel 310 each correspond one-to-one with the airbags 500, and are also provided in two. Furthermore, the exhaust channel 330 connects the two buffer channels 110 to concentrate the airflow and improve the exhaust efficiency of the exhaust device 10.

[0058] See also Figure 8 and Figure 9 When there are two airbags 500, the exhaust device 10 further includes a connector 600 connecting the two airbags 500. To facilitate gas circulation, the connector 600 defines a first through-groove 610 and two second through-grooves 630. The exhaust channel 330 communicates with the buffer channel 110 through the first through-grooves 610, and the guide channel 310 communicates with the buffer channel 110 through the second through-grooves 630.

[0059] Based on the above configuration, the gas in any airbag 500 communicates with the buffer channel 110 on the pump base 100 through the second through-groove 630, where it is slowed down by the buffer channel 110. The slowed gas then flows through the first through-groove 610 to the exhaust channel 330 on the pump cover 300 and out of the exhaust device 10. Optionally, the first through-groove 610 is located between two second through-grooves 630, and the two buffer channels 110 are aligned, with the curved grooves 122 facing in opposite directions.

[0060] It should be noted that in the present application, the connecting piece 600 and the two air bags 500 form a pump racket, which does not have a pump racket foot. In actual production, there is no need to perform foot cutting, which can effectively reduce the production process cost.

[0061] To protect the exhaust device 10 from being affected by external air, the connector 600 further includes a baffle 650 corresponding one-to-one with each of the second through-slots 630. The baffle 650 is connected to the wall of the second through-slot 630 and blocks the end of the guide channel 310 that connects to the second through-slot 630, thereby preventing external air from flowing back and affecting the exhaust efficiency of the exhaust device 10.

[0062] Specifically, when the external gas passes through the buffer channel 110 and wants to flow into the guide channel 310, the external gas will act on the baffle 650 from bottom to top. The greater the force, the better the sealing. When the gas in the airbag 500 wants to flow through the guide channel 310 and the buffer channel 110, it will act on the baffle 650 from top to bottom, thereby blowing open the baffle 650 and achieving circulation. In this application, the guide channel 310 is as follows Figure 6The two ends of the rectangular groove structure shown are respectively arranged corresponding to the airbag 500 and the buffer channel 110.

[0063] Taking this embodiment as an example, the operating principle and workflow of the exhaust device 10 provided herein are as follows: Under the action of the drive device 30, the gas in the airbag 500 is pressurized and communicates with the buffer channel 110 on the pump base 100 through the second through-groove 630. The gas is then blocked by the diversion area and the direct flow area 113 in the buffer channel 110, slowing its flow. The slowed gas then flows through the first through-groove 610 to the exhaust channel 330 on the pump cover 300, and is discharged from the exhaust device 10.

[0064] In summary, the present application provides an exhaust device 10, an air pump 1 and an electronic sphygmomanometer. The exhaust device 10 includes a pump base 100, a pump cover 300 and an airbag 500. Among them, the airbag 500 is provided through the pump cover 300 to facilitate connection with the drive device 30. On the basis of the above, the pump base 100 is provided with a buffer channel 110; the pump cover 300 is provided with a guide channel 310 and an exhaust channel 330. In addition, the open end of the airbag 500 is connected to the pump cover 300 and is connected to the buffer channel 110 through the guide channel 310 to transport the gas into the buffer channel 110. Since the buffer channel 110 is used to slow down the gas flow rate, it can reduce the collision of the gas during the exhaust process, thereby achieving the beneficial effect of effectively realizing noise reduction processing and improving the user's comfort. Afterwards, since the exhaust channel 330 is connected to the buffer channel 110, the gas with a slowed flow rate is discharged from the exhaust device 10, so that the overall noise during the operation of the exhaust device 10 is reduced.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An exhaust device, characterized in that: include: A pump seat (100), wherein the pump seat (100) is provided with a buffer channel (110), and the buffer channel (110) is used to slow down the flow rate of gas; A pump cover (300), wherein the pump cover (300) is provided with a flow guide channel (310) and an exhaust channel (330), and the exhaust channel (330) is communicated with the buffer channel (110); An air bag (500) is provided through the pump seat (100), and an open end of the air bag (500) is connected to the pump cover (300), and is communicated with the buffer channel (110) through the guide channel (310).

2. The exhaust device according to claim 1, characterized in that The buffer channel (110) comprises a direct flow area (113) and a bypass area (111); the direct flow area (113) is connected to the guide channel (310) and the exhaust channel (330); the bypass area (111) is connected to the direct flow area (113), and the gas passing through the bypass area (111) will act on the gas passing through the direct flow area (113).

3. The exhaust device according to claim 2, characterized in that The bypass area (111) comprises a first protrusion (121) and a second protrusion (123); the second protrusion (123) and the first protrusion (121) are arranged correspondingly and together form a curved groove (122); both ends of the curved groove (122) are connected to the direct current area (113) and are curved toward the guide channel (310).

4. The exhaust device according to claim 3, characterized in that The first protrusion (121) comprises a first end (1211) close to the guide channel (310), a second end (1213) close to the exhaust channel (330), and a transition portion (1212) formed at the first end (1211) and the second end (1213), and the cross-sectional size of the transition portion (1212) gradually decreases toward the direction close to the guide channel (310).

5. The exhaust device according to claim 2, characterized in that: The number of the bypass areas (111) is at least two, and all of the bypass areas (111) are arranged at intervals on one side or both sides of the direct flow area (113) along a direction close to the exhaust channel (330).

6. The exhaust device according to any one of claims 1 to 5, characterized in that: There are two airbags (500), the buffer channel (110) and the guide channel (310) correspond one-to-one to the airbags (500), and the exhaust channel (330) communicates with the two buffer channels (110).

7. The exhaust device according to claim 6, characterized in that The exhaust device (10) further comprises a connecting piece (600) connecting the two airbags (500), and the connecting piece (600) is provided with a first through-groove (610) and two second through-grooves (630), and the exhaust channel (330) is communicated with the buffer channel (110) through the first through-groove (610), and the guide channel (310) is communicated with the buffer channel (110) through the second through-groove (630).

8. The exhaust device according to claim 7, characterized in that The connecting member (600) further includes a blocking piece (650) corresponding one-to-one to the second through-groove (630), and the blocking piece (650) is connected to the groove wall of the second through-groove (630) and blocks the end of the guide channel (310) communicating with the second through-groove (630).

9. An air pump, characterized in that: The exhaust device (10) comprises the exhaust device (10) according to any one of claims 1 to 8 and a driving device (30), wherein the driving device (30) is drivingly connected to the exhaust device (10).

10. An electronic blood pressure monitor, characterized in that: It comprises the air pump (1) according to claim 9 and a cuff connected to the air pump (1).

Images