Pipeline assembly and sphygmomanometer

Abstract

The utility model relates to the technical field of medical equipment, and discloses a pipeline assembly and a sphygmomanometer, the pipeline assembly comprises a main pipeline, an air release valve, an air pump and an electromagnetic valve, the main pipeline is provided with a first pipe opening communicated with the air release valve, a second pipe opening communicated with the air pump and a third pipe opening communicated with the electromagnetic valve, and the first pipe opening is located above the second pipe opening; the second pipe opening is located above the third pipe opening so that the air pump can be located above the electromagnetic valve. According to the sphygmomanometer, the air escape valve is located at the highest position of the main pipeline, so that the difficulty that dust is sucked by the air escape valve is increased, the possibility that the dust possibly enters the air escape valve to block the air escape valve is reduced, the problem that the air escape valve is prone to being blocked is solved, and then normal work of the sphygmomanometer and the service life of the sphygmomanometer are guaranteed; the air pump is located above the electromagnetic valve, so that the air pump is separated from the bottom wall of the shell, a gap is formed between the air pump and the bottom wall of the shell, the difficulty that dust in the shell is sucked into the main pipeline through the air pump is increased, and normal work of the sphygmomanometer is further guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of medical equipment, and specifically relates to a pipeline assembly and a sphygmomanometer. Background Art

[0002] Blood pressure is one of the important physiological parameters of the human body and is an important basis for clinical diagnosis of diseases, observation of treatment effects, and prognosis judgment. Traditional sphygmomanometers are mainly mercury sphygmomanometers. With the development of science and technology, electronic sphygmomanometers using oscillometric method have been widely used.

[0003] An electronic sphygmomanometer usually includes a main unit, a cuff tied to the user's arm, and an air pipe connecting the main unit and the cuff. The main unit includes a shell and a pipeline assembly arranged in the shell. The pipeline assembly includes a main line, an air pump connected to the main line, a solenoid valve connected to the main line, and a deflation valve connected to the main line. The main line is provided with an air joint for connecting to the air pipe. The process of measuring blood pressure with a sphygmomanometer is usually divided into three stages: inflation stage, measurement stage, and deflation stage. Regardless of the stage, the deflation valve is always in a leaking state.

[0004] When using a sphygmomanometer to measure blood pressure, the air pipe needs to be installed first to connect the air pipe with the air joint; however, when plugging and unplugging the air pipe, dust may enter the air joint, and then cause the dust to enter the air release valve when the sphygmomanometer is working. Since the air leakage aperture of the air release valve is small, it may cause the air release valve to be blocked; at the same time, when the air pump is working, the dust in the shell will be sucked into the main line by the air pump, which may also cause the air release valve to be blocked, and then the sphygmomanometer cannot measure blood pressure. Utility Model Content

[0005] The present application provides a pipeline assembly and a sphygmomanometer, which alleviate the problem that the air relief valve is easily blocked and ensure the normal operation of the sphygmomanometer.

[0006] The technical solution adopted in this application is:

[0007] A pipeline assembly includes a main pipeline, a relief valve, an air pump and a solenoid valve, wherein the main pipeline is provided with a first pipe opening connected to the relief valve, a second pipe opening connected to the air pump and a third pipe opening connected to the solenoid valve, the first pipe opening is located above the second pipe opening, the second pipe opening is located above the third pipe opening so that the air pump is located above the solenoid valve.

[0008] By adopting the above technical solution, the first pipe opening is arranged above the second pipe opening so that the air release valve is located above the air pump, and the second pipe opening is arranged above the third pipe opening so that the air pump is located above the solenoid valve, thereby raising the height of the air release valve so that the air release valve is at the highest position of the main pipeline, thereby increasing the difficulty of dust being sucked into the air release valve, reducing the possibility that dust may enter the air release valve and block the air release valve, improving the problem of the air release valve being easily blocked, and thus ensuring the normal operation and service life of the sphygmomanometer.

[0009] In addition, the air pump is located above the solenoid valve, so that the air pump is separated from the bottom wall of the shell and has a gap, which increases the difficulty of dust in the shell being sucked into the main line through the air pump, and also reduces the possibility of dust clogging the air release valve, thereby further ensuring the normal operation of the sphygmomanometer.

[0010] Optionally, the main pipe is further provided with a fourth pipe opening connected to the air supply joint, and the main pipe has a bending portion located between the second pipe opening and the fourth pipe opening.

[0011] By adopting the above technical solution, a bending portion is set between the second pipe opening and the fourth pipe opening, so that the dust entering the main pipe through the air joint will be gathered at the bending portion under the action of the airflow, thereby avoiding the dust entering the main pipe from being sucked into the air relief valve, further alleviating the problem of blockage of the air relief valve, and further ensuring the normal operation and service life of the sphygmomanometer.

[0012] Optionally, the third pipe opening is arranged at the bending portion.

[0013] By adopting the above technical solution and arranging the third pipe outlet at the bending part, when the air in the main line is discharged through the solenoid valve, the dust gathered at the bending part will be discharged through the solenoid valve under the action of the airflow, thereby avoiding the situation where dust gathers in the main line, and further avoiding the situation where dust may clog the air release valve, thereby further ensuring the normal operation and service life of the sphygmomanometer.

[0014] Optionally, the main pipeline includes a first branch pipeline and a second branch pipeline arranged on the first branch pipeline, and the first branch pipeline and the second branch pipeline are arranged at an angle to form the bending portion at a connection position between the first branch pipeline and the second branch pipeline.

[0015] By adopting the above technical solution, a bending portion is formed at the connecting position of the first branch pipe and the second branch pipe, so that a flow dead angle can be formed at the bending portion, thereby preventing dust gathered at the bending portion from being sucked into the air relief valve and clogging the air relief valve, thereby further alleviating the situation where the air relief valve is easily clogged, further ensuring the normal operation of the sphygmomanometer and extending the service life of the sphygmomanometer.

[0016] Optionally, an included angle α between the first branch pipe and the second branch pipe satisfies: α≤90°.

[0017] By adopting the above technical solution, the angle α between the first branch pipe and the second branch pipe is set to be less than or equal to 90 degrees. On the one hand, it can ensure that a flow dead corner can be formed at the connection position between the first branch pipe and the second branch pipe for dust to gather here, thereby avoiding dust clogging the air release valve. On the other hand, the structure of the pipeline assembly can be made more compact, which is conducive to the miniaturization design of the main unit and reduces the space occupied by the sphygmomanometer.

[0018] Optionally, the fourth pipe opening is located above the third pipe opening.

[0019] By adopting the above technical solution, the fourth pipe opening is arranged above the third pipe opening, which can ensure that the dust entering the main pipe is gathered at the bending part, and avoid the situation where the fourth pipe opening is located below the third pipe opening, causing the dust in the main pipe to enter the air joint, thereby ensuring that the dust in the main pipe can be discharged through the solenoid valve, further ensuring the normal operation of the sphygmomanometer.

[0020] Optionally, the fourth pipe opening is arranged upward.

[0021] By adopting the above technical solution and setting the fourth pipe opening upward, dust entering the main pipeline through the air joint can fall under the action of gravity and gather at the bending part, and it is also convenient to connect the air joint to the fourth pipe opening, so as to facilitate the assembly of the pipeline assembly and improve the assembly efficiency of the pipeline assembly.

[0022] Optionally, the first pipe opening is arranged upward to be connected with the air inlet of the air relief valve in the up-down direction.

[0023] By adopting the above technical solution, the first pipe opening is set upward, and the air inlet of the air relief valve is set downward, so that when the sphygmomanometer equipped with the pipeline assembly is subjected to vibration, the dust adhered to the air inlet will be separated from the air inlet and fall to the bent portion, and when the sphygmomanometer stops working, the air relief valve stops leaking, and the dust adhered to the air inlet will be separated from the air inlet and fall to the bent portion, thereby further avoiding the blockage of the air relief valve by dust, and further ensuring the normal operation and service life of the sphygmomanometer.

[0024] Optionally, the main pipeline is provided with a first connecting pipe and a second connecting pipe, the pipe opening of the first connecting pipe away from one end of the main pipeline forms the second pipe opening, the pipe opening of the second connecting pipe away from one end of the main pipeline forms the third pipe opening, and the first connecting pipe and the second connecting pipe are located on the same side of the main pipeline.

[0025] By adopting the above technical solution, the second pipe opening is arranged at the end of the first connecting pipe away from the main pipe, so as to avoid the situation that the air pump connected to the second pipe opening may affect the flow area of ​​the main pipe. The third pipe opening is arranged at the end of the second connecting pipe away from the main pipe, so as to avoid the situation that the solenoid valve connected to the third pipe opening may affect the flow area of ​​the main pipe, thereby ensuring the flow area of ​​the main pipe. The first connecting pipe and the second connecting pipe are respectively located on the same side of the main pipe, so that the solenoid valve and the air pump are located on the same side of the main pipe, so as to improve the structural compactness of the pipeline assembly, reasonably utilize the internal space of the shell, and facilitate the miniaturization design of the sphygmomanometer.

[0026] Optionally, the length of the first connecting pipe is smaller than the length of the second connecting pipe so that the solenoid valve forms an escape space with the end of the air pump in the vertical direction.

[0027] By adopting the above technical solution, the length of the first connecting tube is set to be smaller than the length of the second connecting tube, so that the end of the solenoid valve and the end of the air pump can avoid each other, so that the ribs in the housing support the end of the air pump to increase the connection stability between the air pump and the housing. In addition, the upward projection of the solenoid valve can be located as close as possible to the middle of the air pump, so that the weight distribution in the housing is more uniform, thereby increasing the stability of the sphygmomanometer host.

[0028] The present application also discloses a sphygmomanometer, comprising a housing, a cuff and the above-mentioned pipeline assembly, wherein the pipeline assembly is arranged in the housing and is connected to the cuff through an air pipe.

[0029] By adopting the above-mentioned technical solution and using the above-mentioned pipeline assembly, on the one hand, it is avoided that the dust in the shell enters the main pipeline through the air pump, and on the other hand, it is alleviated that the dust in the main pipeline is sucked into the air relief valve and causes the air relief valve to be blocked, thereby ensuring the normal operation of the sphygmomanometer and extending the service life of the sphygmomanometer.

[0030] Optionally, the shell includes a bottom shell and an upper cover cooperating with the bottom shell, the bottom shell is provided with a lower rib, the upper cover is provided with an upper rib, and the lower rib cooperates with the upper rib to clamp and fix the air pump.

[0031] By adopting the above technical solution, when assembling the sphygmomanometer, the pipeline assembly is assembled first, and then the air pump is installed in the bottom shell so that the air pump is in contact with the lower ribs, and then the upper cover is installed, and then the upper ribs of the upper cover are in contact with the air pump, so that the upper and lower ribs clamp the air pump to fix the air pump, avoid the air pump and the shell from shaking with each other, and thus increase the connection stability between the air pump and the shell.

[0032] Optionally, the bottom shell is provided with a limiting rib protruding upward, the limiting rib is arranged along the circumference of the solenoid valve to limit the solenoid valve, and the solenoid valve abuts against the bottom of the air pump.

[0033] By adopting the above technical solution, after the pipeline is assembled and installed in the shell, the solenoid valve is located in the limiting rib, so that the limiting rib limits the solenoid valve axially, and the solenoid valve contacts the air pump, so that the air pump limits the solenoid valve up and down, avoiding relative movement between the solenoid valve and the shell, thereby increasing the connection stability between the solenoid valve and the shell.

[0034] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0035] 1. The present application provides a main pipeline, an air relief valve, an air pump and an electromagnetic valve. The main pipeline is provided with a first pipe opening connected to the air relief valve, a second pipe opening connected to the air pump and a third pipe opening connected to the electromagnetic valve. The first pipe opening is located above the second pipe opening, and the second pipe opening is located above the third pipe opening so that the air pump is located above the electromagnetic valve, and the air relief valve is located at the highest position of the main pipeline, thereby increasing the difficulty of dust being sucked by the air relief valve, reducing the possibility that dust may enter the air relief valve and block the air relief valve, improving the problem that the air relief valve is easily blocked, thereby ensuring the normal operation of the sphygmomanometer and the service life of the sphygmomanometer; and the air pump is located above the electromagnetic valve, so that the air pump is separated from the bottom wall of the shell and has a gap, thereby increasing the difficulty of dust in the shell being sucked into the main pipeline through the air pump, and also reducing the possibility of dust blocking the air relief valve, thereby further ensuring the normal operation of the sphygmomanometer;

[0036] 2. The present application provides a fourth pipe opening in the main pipe, and the main pipe has a bending portion between the second pipe opening and the fourth pipe opening, so that the dust entering the main pipe through the air joint is gathered at the bending portion under the action of the air flow, thereby avoiding the situation where the dust entering the main pipe is sucked into the air relief valve, further alleviating the problem of the air relief valve being blocked, and further ensuring the normal operation and service life of the sphygmomanometer;

[0037] 3. By arranging the third pipe outlet at the bending part, the present application can make it possible for the air in the main line to be discharged through the solenoid valve, and the dust gathered at the bending part will be discharged through the solenoid valve under the action of the airflow, thereby avoiding the situation where dust gathers in the main line, and further avoiding the situation where dust may clog the air release valve, thereby further ensuring the normal operation and service life of the sphygmomanometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0039] Figure 1 This is a schematic diagram of the structure of the pipeline assembly in one embodiment of the present application;

[0040] Figure 2 This is a schematic structural diagram of the main pipeline described in one implementation mode of the present application;

[0041] Figure 3 This is an exploded structural schematic diagram of the connection relationship between the pipeline assembly and the cuff in one implementation manner of the present application;

[0042] Figure 4 A cross-sectional view of a sphygmomanometer according to an embodiment of the present application, wherein the cuff is not shown in this figure;

[0043] Figure 5 This is a schematic diagram of the explosion structure of the sphygmomanometer described in one embodiment of the present application.

[0044] Reference numerals:

[0045] 1. Main pipeline; 11. First branch pipeline; 111. First pipe opening; 112. First connecting pipe; 113. Second pipe opening; 12. Second branch pipeline; 121. Fourth pipe opening; 122. Gas joint; 13. Bend portion; 131. Second connecting pipe; 132. Third pipe opening;

[0046] 2. Air release valve;

[0047] 3. Air pump;

[0048] 4. Solenoid valve;

[0049] 5. Shell; 51. Bottom shell; 511. Lower rib position; 52. Upper cover; 521. Upper rib position; 522. Limiting rib;

[0050] 6. Cuff; 61. Trachea. DETAILED DESCRIPTION

[0051] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0053] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0056] Reference Figures 1 to 3, a pipeline assembly, comprising a main pipeline 1, a relief valve 2, an air pump 3 and a solenoid valve 4, wherein the main pipeline 1 is provided with a first pipe opening 111, a second pipe opening 113 located below the first pipe opening 111 and a third pipe opening 132 located below the second pipe opening 113, the relief valve 2 is connected to the first pipe opening 111, the air pump 3 is connected to the second pipe opening 113, and the solenoid valve 4 is connected to the third pipe opening 132, so that the air pump 3 is located below the relief valve 2, and the solenoid valve 4 is located below the air pump 3. On the one hand, the height of the position of the relief valve 2 is raised, thereby increasing the difficulty of dust in the shell 5 being sucked by the relief valve 2, and reducing the possibility of dust blocking the relief valve 2. On the other hand, the height of the position of the air pump 3 is raised, so that there is a gap between the air pump 3 and the bottom wall of the shell 5 where dust is easily accumulated, thereby increasing the difficulty of dust in the shell 5 being sucked into the main pipeline 1 by the air pump 3, further reducing the possibility of the relief valve 2 being blocked by dust, thereby ensuring the normal operation of the sphygmomanometer and extending the service life of the sphygmomanometer.

[0057] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 The main pipeline 1 is also provided with a fourth pipe opening 121, which is connected to the air supply connector 122, and the main pipeline 1 has a bending portion 13 located between the second pipe opening 113 and the fourth pipe opening 121, so that the dust entering the main pipeline 1 through the air connector 122 will be gathered at the bending portion 13 under the action of the airflow, thereby preventing the dust entering the main pipeline 1 from being sucked into the air relief valve 2, further alleviating the problem of the pressure relief valve being blocked, further ensuring the normal operation of the sphygmomanometer and extending the service life of the sphygmomanometer.

[0058] In a preferred embodiment, referring to Figure 2 The third pipe opening 132 is arranged at the bending portion 13, so that the dust gathered at the bending portion 13 is discharged from the main pipeline 1 together with the air in the main pipeline 1 when the solenoid valve 4 is exhausted, thereby avoiding the situation where dust gathers at the bending portion 13 and may block the air release valve 2, further ensuring the normal operation of the sphygmomanometer and extending its service life.

[0059] The present application does not specifically limit the shape of the bending portion 13. In a preferred embodiment, Figure 2The main pipeline 1 includes a first branch pipeline 11 and a second branch pipeline 12, one end of the first branch pipeline 11 is fixedly connected to one end of the second branch pipeline 12 and is connected, and the first branch pipeline 11 and the second branch pipeline 12 are arranged at an angle, so that the connection position of the first branch pipeline 11 and the second branch pipeline 12 forms a V-shaped bending portion 13, so that a flow dead angle is formed at the bending portion 13, and the dust collected at the bending portion 13 is prevented from following the air flow and flowing in the main pipeline 1 to block the air release valve 2. Of course, in other embodiments, the bending portion 13 can also be U-shaped.

[0060] Specifically, the first pipe opening 111 and the second pipe opening 113 are both disposed in the first branch pipe 11 , and the fourth pipe opening 121 is disposed in the second branch pipe 12 , so that the first pipe opening 111 , the second pipe opening 113 and the third pipe opening 132 are linearly arranged up and down.

[0061] Further, refer to Figure 2 The angle α between the first branch pipeline 11 and the second branch pipeline 12 satisfies: α≤90°. On the one hand, it can ensure that a flow dead angle can be formed at the connection position of the first branch pipeline 11 and the second branch pipeline 12 for dust to gather here, thereby preventing dust from following the air flow in the main pipeline 1 and causing blockage of the air relief valve 2. On the other hand, it can make the structure of the pipeline assembly more compact, which is conducive to the miniaturization design of the sphygmomanometer and reduces the space occupied by the sphygmomanometer.

[0062] According to experiments, if α>90°, dust may not be gathered in the bent portion 13 , and the dust may follow the air flow in the main pipeline 1 into the air relief valve 2 , thereby blocking the air relief valve 2 .

[0063] Preferably, α=30°, which, on the one hand, further improves the structural compactness of the pipeline assembly to facilitate the miniaturized design of the sphygmomanometer, and on the other hand, increases the stability of dust gathering behind the bending portion 13, further preventing dust from clogging the air relief valve 2.

[0064] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 The fourth pipe opening 121 is located above the third pipe opening 132 to ensure that the dust entering the main pipe 1 through the air connector 122 is gathered at the bending portion 13 under the action of its own gravity, thereby avoiding the situation where the dust in the main pipe 1 is gathered at the air connector 122 and cannot be discharged from the main pipe 1 through the solenoid valve 4 due to the fourth pipe opening 121 being located below the third pipe opening 132, thereby further extending the service life of the sphygmomanometer.

[0065] The present application does not specifically limit the direction of the fourth nozzle 121. In a preferred embodiment, Figure 1 , Figure 2and Figure 3 , the fourth pipe opening 121 is arranged upward, that is, the fourth pipe opening 121 is arranged at the end of the second branch pipe 12, so that the dust entering the main pipe 1 through the air joint 122 during the process of plugging and unplugging the air pipe 61 can fall directly to the bending portion 13 under the action of its own gravity; in addition, when the user moves the sphygmomanometer, the sphygmomanometer will shake or vibrate, and then the dust adhering to the connection position between the main pipe 1 and the air joint 122 will fall to the bending portion 13, so that the solenoid valve 4 can exhaust the dust in the main pipe 1. Of course, in other embodiments, the end of the second branch pipe 12 away from the first branch pipe 11 can also be bent downward, so that the fourth pipe opening 121 is downward, thereby avoiding the situation where dust enters the main pipe 1 through the air joint 122; or, the fourth pipe opening 121 is arranged on the side of the second branch pipe 12, so that the fourth pipe opening 121 faces one side of the second branch pipe 12.

[0066] The present application does not specifically limit the direction of the first nozzle 111. In a preferred embodiment, Figure 1 and Figure 3 , the first pipe opening 111 is arranged upward to be connected with the air inlet of the air release valve 2 in the up-down direction, that is, the first pipe opening 111 is arranged at the end of the first branch pipeline 11, so that when the air release valve 2 stops leaking, the dust adhering to the air inlet of the air release valve 2 falls to the bent portion 13 under the action of its own gravity, so that the solenoid valve 4 can exhaust the dust in the main pipeline 1. Of course, in other embodiments, the first pipe opening 111 can also be arranged on the side of the first branch pipeline 11, so that the first pipe opening 111 faces one side of the first branch pipeline 11.

[0067] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 The main line 1 is connected with a first connecting pipe 112 and a second connecting pipe 131. The pipe opening of the first connecting pipe 112 away from one end of the main line 1 forms a second pipe opening 113 to avoid the situation that the air pump 3 connected to the second pipe opening 113 may affect the flow area of ​​the main line 1. The pipe opening of the second connecting pipe 131 away from one end of the main line 1 forms a third pipe opening 132 to avoid the situation that the solenoid valve 4 connected to the third pipe opening 132 may affect the flow area of ​​the main line 1, thereby ensuring the flow area of ​​the main line 1. In addition, the first connecting pipe 112 and the second connecting pipe 131 are both located on the same side of the main line 1, thereby improving the compactness of the structure of the pipeline assembly, rationally utilizing the internal space of the housing 5, and facilitating the miniaturization design of the sphygmomanometer.

[0068] Specifically, the first connecting pipe 112 is arranged in the first branch pipe 11 and is arranged perpendicular to the first branch pipe 11, and the second connecting pipe 131 is arranged at the connecting position of the first branch pipe 11 and the second branch pipe 12 and is arranged perpendicular to the first branch pipe 11, so as to install the solenoid valve 4 and the air pump 3 and improve the assembly efficiency of the pipeline assembly.

[0069] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 The length of the first connecting pipe 112 is smaller than the length of the second connecting pipe 131 so that the end of the solenoid valve 4 forms an escape space with the end of the air pump 3 in the vertical direction, so that the ribs in the housing 5 support the end of the air pump 3 to increase the stability of the air pump 3. In addition, the upward projection of the solenoid valve 4 can be located in the middle of the air pump 3 as much as possible to make the weight distribution in the housing 5 more uniform.

[0070] Reference Figure 4 and Figure 5 The present application also discloses a sphygmomanometer, which includes a shell 5, a cuff 6 and the above-mentioned pipeline assembly, wherein the pipeline assembly is arranged in the shell 5, and a gas joint 122 extending out of the shell 5 is connected to the fourth pipe opening 121 of the pipeline assembly, and the cuff 6 is connected to the gas joint 122 through an air pipe 61 to connect the pipeline assembly to the cuff 6.

[0071] Due to the use of the above-mentioned pipeline assembly, a gap is created between the air pump 3 and the inner wall of the shell 5, thereby preventing dust in the shell 5 from being sucked into the main pipeline 1 by the air pump 3. In addition, the height of the air release valve 2 is raised, which increases the difficulty of dust being sucked into the air release valve 2, thereby preventing dust from clogging the air release valve 2, thereby ensuring the normal operation of the sphygmomanometer and extending the service life of the sphygmomanometer.

[0072] In a preferred embodiment, referring to Figure 4 and Figure 5 The shell 5 includes a bottom shell 51 and an upper cover 52 matched with the bottom shell 51. The bottom shell 51 is provided with a lower rib position 511, and the upper cover 52 is provided with an upper rib position 521 corresponding to the lower rib position 511. The lower rib position 511 and the upper rib position 521 cooperate to clamp and fix the air pump 3.

[0073] That is to say, when assembling and producing the sphygmomanometer, the pipeline assembly is assembled first, and then the assembled pipeline assembly is installed in the bottom shell 51 so that the air pump 3 is in contact with the lower rib position 511, and then the upper cover 52 is installed, and then the upper rib position 521 is in contact with the air pump 3, so that the upper rib position 521 and the lower rib position 511 clamp and fix the air pump 3 to avoid relative shaking between the air pump 3 and the shell 5, thereby increasing the connection stability between the air pump 3 and the shell 5.

[0074] In a preferred embodiment, referring to Figure 4 and Figure 5 The bottom shell 51 is provided with a limiting rib 522 protruding upward, and the limiting rib 522 is arranged along the circumferential side of the solenoid valve 4 to limit the solenoid valve 4 circumferentially, and the solenoid valve 4 is in contact with the bottom of the air pump 3 to limit the solenoid valve 4 up and down, thereby fixing the solenoid valve 4 to avoid relative shaking between the solenoid valve 4 and the shell 5, thereby increasing the connection stability between the solenoid valve 4 and the shell 5.

[0075] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0076] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0077] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A pipeline assembly, comprising a main pipeline (1), a relief valve (2), an air pump (3) and a solenoid valve (4), characterized in that: The main pipe (1) is provided with a first pipe opening (111) connected to the air relief valve (2), a second pipe opening (113) connected to the air pump (3), and a third pipe opening (132) connected to the solenoid valve (4); the first pipe opening (111) is located above the second pipe opening (113), and the second pipe opening (113) is located above the third pipe opening (132) so that the air pump (3) is located above the solenoid valve (4).

2. A pipeline assembly according to claim 1, characterized in that: The main pipe (1) is also provided with a fourth pipe opening (121) connected to the air supply joint (122), and the main pipe (1) has a bending portion (13) located between the second pipe opening (113) and the fourth pipe opening (121).

3. A pipeline assembly according to claim 2, characterized in that: The third pipe opening (132) is arranged at the bending portion (13).

4. A pipeline assembly according to claim 2, characterized in that: The main pipeline (1) comprises a first branch pipeline (11) and a second branch pipeline (12) arranged on the first branch pipeline (11); the first branch pipeline (11) and the second branch pipeline (12) are arranged at an angle to form the bending portion (13) at a connection position between the first branch pipeline (11) and the second branch pipeline (12).

5. A pipeline assembly according to claim 4, characterized in that: The included angle α between the first branch pipe (11) and the second branch pipe (12) satisfies: α≤90°.

6. A pipeline assembly according to claim 2, characterized in that: The fourth pipe opening (121) is located above the third pipe opening (132).

7. A pipeline assembly according to claim 2, characterized in that: The fourth pipe opening (121) is arranged upward.

8. A pipeline assembly according to claim 1, characterized in that: The first pipe opening (111) is arranged upward to be connected with the air inlet of the air relief valve (2) in the up-down direction.

9. A pipeline assembly according to claim 1, characterized in that: The main pipe (1) is provided with a first connecting pipe (112) and a second connecting pipe (131); the pipe opening of the first connecting pipe (112) away from one end of the main pipe (1) forms the second pipe opening (113); the pipe opening of the second connecting pipe (131) away from one end of the main pipe (1) forms the third pipe opening (132); the first connecting pipe (112) and the second connecting pipe (131) are located on the same side of the main pipe (1).

10. A pipeline assembly according to claim 9, characterized in that: The length of the first connecting pipe (112) is smaller than the length of the second connecting pipe (131) so that the solenoid valve (4) forms an escape space with the end of the air pump (3) in the vertical direction.

11. A sphygmomanometer, characterized in that: It comprises a shell (5), a cuff (6) and a pipeline assembly as described in any one of claims 1 to 10, wherein the pipeline assembly is arranged in the shell (5) and is connected to the cuff (6) through an air pipe (61).

12. A sphygmomanometer according to claim 11, characterized in that: The housing (5) comprises a bottom shell (51) and an upper cover (52) matched with the bottom shell (51); the bottom shell (51) is provided with a lower rib position (511); the upper cover (52) is provided with an upper rib position (521); the lower rib position (511) and the upper rib position (521) cooperate to clamp and fix the air pump (3).

13. A sphygmomanometer according to claim 12, characterized in that: The bottom shell (51) is provided with a limiting rib (522) protruding upwards, and the limiting rib (522) is arranged along the circumference of the solenoid valve (4) to limit the position of the solenoid valve (4), and the solenoid valve (4) contacts the bottom of the air pump (3).

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