Pressure reduction type sphygmomanometer and air pump thereof
By designing a leakage channel and leakage valve in the air pump, a pressure relief function is achieved, solving the problem that existing blood pressure monitors require an external leakage valve, simplifying the structure and improving portability and ease of operation.
Patent Information
- Application Number
- CN202421958567.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-08-13
AI Technical Summary
Existing blood pressure monitors require an additional leakage valve, resulting in a complex structure and an unnecessary increase in components.
Design an air pump that includes a leakage channel and a leakage valve. By controlling the amount of leakage through the leakage channel, a pressure relief function can be achieved, replacing the external leakage valve in existing blood pressure monitors.
The elimination of an external leakage valve simplifies the structure and improves the portability and ease of operation of the blood pressure monitor.
Smart Images
Figure CN223350196U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sphygmomanometers, in particular to a step-down sphygmomanometer and an air pump thereof. Background Art
[0002] As we all know, blood pressure monitors can be divided into two types: step-up and step-down. Step-up blood pressure monitors measure blood pressure while the pump is inflating and then deflate immediately. Step-down blood pressure monitors, on the other hand, measure blood pressure during the deflation process after the pump is fully inflated. Therefore, the measurement processes of the two types are exactly opposite.
[0003] Currently, for Figure 1 For example, the conventional step-down blood pressure monitor 1000 shown in FIG. includes an air pump 100, a main unit 200, a control circuit board 300, an air tube 400, and an air leakage valve 500. The air leakage valve 500, air tube 400, air pump 100, and control circuit board 300 are all located in the main unit 200, with the control circuit board 300 and air pump 100 electrically connected. One end 410 of the air tube 400 is connected to the air leakage valve 500 and air pump 100, respectively, creating a parallel arrangement between the two devices. The other end of the air tube 400 has an external connector 420 that is exposed through the side wall 210 of the main unit 200.
[0004] However, since the leakage pressure of the step-down sphygmomanometer 1000 cannot be achieved by the air pump 100 , an additional leakage valve 500 is required.
[0005] Therefore, there is an urgent need for a step-down sphygmomanometer and an air pump thereof to overcome the above-mentioned defects. Utility Model Content
[0006] One object of the present utility model is to provide an air pump for a step-down blood pressure monitor, so that the step-down blood pressure monitor with the air pump can omit the use of an external air leakage valve.
[0007] Another object of the present invention is to provide a step-down blood pressure monitor that eliminates the need for an external air leakage valve.
[0008] To achieve the above-mentioned purpose, the air pump of the step-down blood pressure monitor of the present invention comprises a motor, a driving member, a connecting rod mechanism, a bladder, a bottom shell, a connecting channel, an upper cover with an external interface, an air leakage channel, and an air leakage valve for controlling the amount of air leakage in the air leakage channel. The upper cover is assembled and connected to the upper end of the bottom shell. The bladder comprises a base plate sealedly assembled between the upper cover and the bottom shell, an air bag connected to the base plate and capable of telescopic movement to change the volume, and a one-way valve for controlling the connection and disconnection between the air bag and the connecting channel. The motor is assembled to the lower end of the bottom shell. The driving member is connected to the motor and the connecting rod mechanism. The connecting rod mechanism is connected to the air bag. The motor drives the air bag to telescopic movement through the driving member and the connecting rod mechanism. The external interface is connected to the connecting channel, and the air leakage valve is arranged on the base plate. The air leakage channel includes an upper channel communicating with the communication channel from above the air leakage valve plate, a through channel penetrating the base plate up and down, and a lower channel located below the air leakage valve plate, wherein the through channel communicates with the upper channel and the lower channel.
[0009] Compared with the existing technology, the air pump also has a leakage pressure relief function thanks to the design that "the air pump also includes a leakage channel and a leakage valve plate provided on the substrate for controlling the leakage size of the leakage channel, the leakage channel includes an upper channel connected to the connecting channel from the top of the leakage valve plate, a through channel penetrating the substrate up and down, and a lower channel located below the leakage valve plate, and the through channel is connected to the upper channel and the lower channel", so as to replace the external leakage valve responsible for pressure relief in the trachea of the existing step-down sphygmomanometer.
[0010] Preferably, the upper channel is opened on the upper cover body, and the upper channel also passes through the lower end surface of the upper cover body, and the air leakage valve sheet covers a portion of the upper channel; the side wall of the portion passing through the channel is formed by the corresponding position of the air leakage valve sheet.
[0011] Preferably, the air pump of the present invention also includes an adjusting screw, and the upper cover body is provided with an internal threaded hole that passes through the upper cover body from top to bottom, and the internal threaded hole corresponds to the part of the upper channel covered by the air leakage valve plate, and the adjusting screw is screwed downward into the internal threaded hole and cooperates with the air leakage valve plate.
[0012] Preferably, the air leakage valve disc is an elastic valve disc, and the adjusting screw is in abutment with the air leakage valve disc.
[0013] Preferably, the lower end surface of the air leakage valve plate has an inclined surface that is inclined upward toward the direction approaching the through channel.
[0014] Preferably, the lower channel includes a first channel passing through the upper end surface of the bottom shell and a second channel defined by the inclined surface and the upper end surface of the bottom shell. The inclined surface also corresponds to the first channel up and down, and the first channel is also connected to the internal space of the bottom shell.
[0015] Preferably, the connecting channel includes an upper splicing groove provided on the upper cover body, an intermediate splicing groove passing through the base plate from top to bottom, and a lower splicing groove provided on the upper end of the bottom shell body; the one-way valve sheet is used to control the connection and disconnection between the intermediate splicing groove and the airbag; the upper splicing groove is respectively connected to the upper channel and the external interface.
[0016] Preferably, a sealing protrusion for sealing the opening of the airbag protrudes from the lower end surface of the upper cover body, and the sealing protrusion is located next to the upper splicing groove; the upper cover body is also provided with a connecting groove separated from the upper splicing groove, and the connecting groove partially extends into the sealing protrusion, and the one-way valve sheet covers the part of the connecting groove located outside the sealing protrusion.
[0017] Preferably, the upper splicing grooves are multiple and radially arranged with the external interface as the center, and each of the upper splicing grooves corresponds to one of the blocking protrusions, one air bag and one communicating groove.
[0018] To achieve the aforementioned objectives, the present invention provides a step-down blood pressure monitor comprising a main unit housing, a control circuit board, an air tube, and the aforementioned air pump. The control circuit board and air tube are assembled within the main unit housing, and the control circuit board is electrically connected to the air pump. One end of the air tube is connected to the external port, and the other end of the air tube has an external connector exposed to the outside.
[0019] Compared with the existing technology, the air pump also has a leakage pressure relief function thanks to the design that "the air pump also includes a leakage channel and a leakage valve plate provided on the substrate for controlling the leakage size of the leakage channel, the leakage channel includes an upper channel connected to the connecting channel from the top of the leakage valve plate, a through channel penetrating the substrate up and down, and a lower channel located below the leakage valve plate, and the through channel is connected to the upper channel and the lower channel", so as to replace the external leakage valve responsible for pressure relief in the trachea of the existing step-down sphygmomanometer. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a plan view of an existing step-down blood pressure monitor.
[0021] Figure 2 It is a plan view of the buck-type sphygmomanometer of the present utility model.
[0022] Figure 3 A plan view of the air pump in the step-down sphygmomanometer of the present invention.
[0023] Figure 4 It is along Figure 3 The internal view cut along line AA in the figure shows the airflow direction with dotted arrows in the enlarged view.
[0024] Figure 5 yes Figure 4 3D exploded view of .
[0025] Figure 6 yes Figure 5 Exploded three-dimensional diagram from another angle.
[0026] Figure 7 It is along Figure 3 Internal view cut along the midline BB.
[0027] Figure 8 It is a three-dimensional diagram of the upper cover body in the air pump of the present utility model.
[0028] Figure 9 It is a three-dimensional diagram of the bladder in the air pump of the present utility model.
[0029] Figure 10 yes Figure 9 A three-dimensional image from another angle.
[0030] Figure 11 It is a three-dimensional view of the upper end of the bottom shell of the air pump of the present invention. DETAILED DESCRIPTION
[0031] In order to explain the technical content and structural features of the present invention in detail, the following is a further description in conjunction with the embodiments and the accompanying drawings.
[0032] See also Figure 2 The present invention's step-down blood pressure monitor 1000 includes an air pump 100, a main unit box 200, a control circuit board 300, and an air tube 400. The control circuit board 300 and the air tube 400 are assembled in the main unit box 200. The control circuit board 300 is electrically connected to the air pump 100 to meet the control needs of the control circuit board 300 on the air pump 100. One end 410 of the air tube 400 is connected to the external interface 71 described below, and the other end of the air tube 400 has an external connector 420 exposed to the outside. Optionally, Figure 2 As an example, the external connector 420 is exposed from the side wall 210 of the main box 200 to avoid the external connector 420 being exposed from the top of the main box 200, which would affect the appearance, or being exposed from the bottom of the main box 200, which would cause operational inconvenience. It should be noted that since the control circuit board 300, air pipe 400, and main box 200 are well known in the art, they will not be described in detail here. The specific structure of the air pump 100 is described below.
[0033] Combine Figure 3 and Figure 4 The air pump 100 includes a motor 10, a driving member 20, a connecting rod mechanism 30, a capsule 40, a bottom shell 50, a communication channel 60, an upper cover 70 with an external port 71, an air leakage channel 80, and an air leakage valve 90a for controlling the amount of air leakage in the air leakage channel 80. The upper cover 70 is assembled and connected to the upper end 51 of the bottom shell 50, so that the upper cover 70 and the bottom shell 50 are assembled together. The bladder body 40 includes a base plate 41 that is sealed and assembled between the upper cover body 70 and the bottom shell body 50, an airbag 42 that is connected to the base plate 41 and can perform telescopic movement to change the volume, and a one-way valve plate 43 for controlling the connection and disconnection between the airbag 42 and the connecting channel 60. Since the base plate 41 is sealed and assembled between the upper cover body 70 and the bottom shell body 50, the bladder body 40 is fixed to the upper cover body 70 and the bottom shell body 50 with the help of the base plate 41, and the fitting parts between the base plate 41 and the upper cover body 70 and the fitting parts between the base plate 41 and the bottom shell body 50 are sealed to prevent air leakage. Since the airbag 42 can perform telescopic movement, the airbag 42 inhales gas due to the increase in volume during the extension process. At this time, the one-way valve plate 43 prevents the gas in the connecting channel 60 from flowing back to the airbag 42. The state is shown in FIG. Figure 4 As shown in the partially enlarged view; the airbag 42 becomes smaller during the compression process and the air pressure increases, so that the gas inhaled into the airbag 42 pushes open the one-way valve 43, and the one-way valve 43 is pushed open. Figure 4 As shown by the dotted line in the partially enlarged view, the liquid flows into the connecting channel 60.
[0034] Meanwhile, the motor 10 is assembled to the lower end 52 of the bottom housing 50, so that the motor 10 and the lower end 52 of the bottom housing 50 are assembled together. The driving member 20 is connected to the motor 10 and the connecting rod mechanism 30, and the connecting rod mechanism 30 is connected to the airbag 42, so that the motor 10 drives the airbag 42 to extend and retract through the driving member 20 and the connecting rod mechanism 30. Since the specific structures of the motor 10, the driving member 20, and the connecting rod mechanism 30 and their relationship are well known in the art, they will not be described in detail here.
[0035] Furthermore, the external interface 71 is in communication with the connecting channel 60 to meet the need of transporting the gas in the connecting channel 60 from the external interface 71 to the trachea 400, or the need of the gas in the trachea 400 to flow back from the external interface 71 to the connecting channel 60. The leakage valve plate 90a is provided on the substrate 42. Optionally, the leakage valve plate 90a is formed on the base body 42 so that the leakage valve plate 90a and the substrate 42 together form an integrated structure, thereby simplifying their manufacturing process. The leakage channel 80 includes an upper channel 81 that is in communication with the connecting channel 60 from above the leakage valve plate 90a, a through channel 82 that passes through the substrate 41 from top to bottom, and a lower channel 83 located below the leakage valve plate 90a. The through channel 82 is in communication with the upper channel 81 and the lower channel 83. Specifically, Figure 4 As an example, the upper channel 81 is opened on the upper cover body 70, and the upper channel 81 also passes through the lower end surface 72 of the upper cover body 70. The air leakage valve plate 90a covers a portion 811 of the upper channel 81, and the partial channel side wall 821 passing through the channel 82 is composed of the corresponding position of the air leakage valve plate 90a, that is, the partial position of the air leakage valve plate 90a forms the partial channel side wall 821 passing through the channel 82.
[0036] Among them, by virtue of the design that "the leakage valve plate 90a covers a portion 811 of the upper channel 81", the gas entering the upper channel 81 flows in two ways, one of which flows directly into the through channel 82, and the other flows to the portion 811 of the upper channel 81 covered by the leakage valve plate 90a, and then flows back to the through channel 82 (see the state). Figure 4 (As shown by the dotted arrows in the partially enlarged view in FIG), the gas backflow effect is utilized to enable the leakage valve plate 90a to adaptively adjust the leakage size of the lower channel 83 according to the air pressure, thereby ensuring the uniformity of the leakage. More specifically, as follows:
[0037] like Figures 4 to 6 As shown, as an example, the air pump 100 further includes an adjusting screw 90b, and the upper cover body 70 is provided with an internal threaded hole 73 that passes through the upper cover body 70 from top to bottom. The internal threaded hole 73 corresponds to the portion 811 of the upper channel 81 covered by the air leakage valve plate 90a. The adjusting screw 73 is screwed downward into the internal threaded hole 73 and cooperates with the air leakage valve plate 90a. Optionally, Figure 4 In the figure, as an example, the air leakage valve plate 90a is an elastic valve plate, and the adjusting screw 90b is in abutment with the air leakage valve plate 90a to simplify the linkage structure between the air leakage valve plate 90a and the adjusting screw 90b; in addition, with the help of the elasticity of the air leakage valve plate 90a, the adaptive adjustment of the air leakage valve plate 90a is more sensitive; in addition, with the help of the adjusting screw 90b, the operator can flexibly adjust the air leakage valve plate 90a to control the leakage size of the leakage channel 80 according to actual needs.
[0038] like Figure 4 As shown, as an example, the lower end surface of the air leakage valve plate 90a has an inclined surface 91 that is inclined upward toward the direction of the through-channel 82; the lower channel 83 includes an upper end surface 511 (see FIG. Figure 11 ) and a second channel 832 defined by the inclined surface 91 and the upper end surface 511 of the bottom shell 50, the inclined surface 91 also corresponds to the first channel 831 up and down, and the first channel 831 is also connected to the internal space 53 of the bottom shell 50; therefore, with the help of the inclined surface 91, the second channel 832 is arranged to gradually become smaller in the direction away from the through channel 82, thereby facilitating the leakage valve plate 90a to control the leakage size of the leakage channel 80; with the help of the first channel 831, the gas in the leakage channel 80 is discharged into the internal space 53 of the bottom shell 50, and finally discharged outward from the gap between the bottom shell 50 and the motor 10.
[0039] Combine Figures 4 to 6 ,as well as Figures 8 to 11 As an example, the connecting channel 60 includes an upper splicing groove 61 provided on the upper cover 70, an intermediate splicing groove 62 that passes through the base plate 42 from top to bottom, and a lower splicing groove 63 provided on the upper end 51 of the bottom shell 50. The one-way valve plate 43 is used to control the on-off between the intermediate splicing groove 62 and the airbag 42, that is, the gas sucked into the airbag 42 pushes open the one-way valve plate 43 during the compression process and enters the intermediate splicing groove 62. In addition, the upper splicing groove 61 is respectively connected to the upper channel 81 and the external interface 71, that is, the external interface 71 and the upper channel 81 are connected by means of the upper splicing groove 61, so that the upper splicing groove 61 acts as a bridge connecting the external interface 71 and the upper channel 81. Specifically, combined with Figures 4 to 6 ,as well as Figure 8 As an example, a sealing protrusion 74 for sealing the opening 421 of the airbag 42 protrudes from the lower end surface 72 of the upper cover body 70, and the sealing protrusion 74 is located next to the upper splicing groove 61; the upper cover body 70 is also provided with a connecting groove 75 separated from the upper splicing groove 61, and the connecting groove 75 partially extends into the sealing protrusion 74, and the one-way valve plate 43 covers the part 751 of the connecting groove 75 outside the sealing protrusion 74, so that the one-way valve plate 43 blocks the part 751 during the extension of the airbag 42, and the one-way valve plate 43 is pushed open by the gas sucked into the airbag 42 during the compression of the airbag 42, so that the gas sucked into the airbag 42 passes through the connecting groove 75 and enters the upper splicing groove 61. More specifically, in Figure 8As an example, three upper engaging grooves 61 are arranged radially around the outer interface 71. The number can be two, four, or five depending on actual needs, determined by the number of airbags 42. Each upper engaging groove 61 corresponds to a blocking protrusion 74, an airbag 42, and a connecting groove 75.
[0040] like Figure 7 As shown, as an example, the air pump 100 also includes an exhaust mechanism 90c and an air release channel 90d. The exhaust mechanism 50 is also connected to the connecting rod mechanism 30, and the exhaust mechanism 50 is driven by the connecting rod mechanism 30 to move; the air release channel 90d passes through the base plate 41 and the upper end 51 of the bottom shell 50, and the exhaust mechanism 90c selectively opens or closes the exhaust channel 90d; so that the air pump 100 also has an air release function. It should be noted that the inflation and deflation of the air pump 100 are two opposite processes, which require the motor 10 to rotate forward and reverse, but this is well known in the art. In addition, since the exhaust mechanism 90c and the air release channel 90d are already well known in the art, they will not be described in detail here.
[0041] Compared to the prior art, the air pump 100 also has a leak pressure relief function thanks to the design that "the air pump 100 further includes a leak channel 80 and a leak valve plate 90a provided on the base plate 41 for controlling the amount of leak in the leak channel 80; the leak channel 80 includes an upper channel 81 communicating with the connecting channel 60 from above the leak valve plate 90a; a through channel 82 penetrating the base plate 42 vertically; and a lower channel 83 located below the leak valve plate 90a; the through channel 82 communicating with the upper channel 81 and the lower channel 83." This replaces the external leak valve in the trachea of the prior art step-down blood pressure monitor responsible for pressure relief. Therefore, the step-down blood pressure monitor 1000 of the present invention can eliminate the need for an external leak valve.
[0042] It is worth noting that although the drawings show the upper cover body 70 as an integral structure, it is obvious that according to actual needs, the upper cover body 70 can also be made into multiple separate parts, and then the multiple parts can be assembled together, so it is not limited to what is shown in the drawings.
[0043] The above disclosure is only a preferred embodiment of the present invention and cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope covered by the present invention.
Claims
1. An air pump for a step-down blood pressure monitor, comprising a motor, a driving member, a connecting rod mechanism, a bladder, a bottom shell, a communicating channel and an upper cover body with an external interface, wherein the upper cover body is assembled and connected to the upper end of the bottom shell body, the bladder body comprises a base plate sealedly assembled between the upper cover body and the bottom shell body, an air bag connected to the base plate and capable of performing telescopic movement to change the volume, and a one-way valve plate for controlling the connection and disconnection between the air bag and the communicating channel, the motor is assembled at the lower end of the bottom shell body, the driving member is connected to the motor and the connecting rod mechanism, the connecting rod mechanism is connected to the air bag, the motor drives the air bag to perform telescopic movement through the driving member and the connecting rod mechanism, the external interface is communicated with the communicating channel, characterized in that The air pump also includes a leakage channel and a leakage valve plate provided on the substrate for controlling the leakage size of the leakage channel. The leakage channel includes an upper channel connected to the connecting channel from above the leakage valve plate, a through channel passing through the substrate up and down, and a lower channel located below the leakage valve plate. The through channel is connected to the upper channel and the lower channel.
2. The air pump according to claim 1, characterized in that The upper channel is opened on the upper cover body and also passes through the lower end surface of the upper cover body. The air leakage valve sheet covers a part of the upper channel; the side wall of part of the channel passing through the channel is formed by the corresponding position of the air leakage valve sheet.
3. The air pump according to claim 1, characterized in that It also includes an adjusting screw. The upper cover body is provided with an internal threaded hole that passes through the upper cover body from top to bottom. The internal threaded hole corresponds to the part of the upper channel covered by the air leakage valve plate. The adjusting screw is screwed downward into the internal threaded hole and cooperates with the air leakage valve plate.
4. The air pump according to claim 3, characterized in that The air leakage valve plate is an elastic valve plate, and the adjusting screw is in abutment with the air leakage valve plate.
5. The air pump according to claim 1, characterized in that The lower end surface of the air leakage valve plate has an inclined surface that is inclined upward toward a direction close to the through channel.
6. The air pump according to claim 5, characterized in that The lower channel includes a first channel that passes through the upper end surface of the bottom shell and a second channel defined by the inclined surface and the upper end surface of the bottom shell. The inclined surface also corresponds to the first channel up and down, and the first channel is also connected to the internal space of the bottom shell.
7. The air pump according to claim 1, characterized in that The connecting channel includes an upper splicing groove opened on the upper cover body, an intermediate splicing groove running through the base plate from top to bottom, and a lower splicing groove opened on the upper end of the bottom shell body. The one-way valve plate is used to control the connection and disconnection between the intermediate splicing groove and the airbag; the upper splicing groove is respectively connected to the upper channel and the external interface.
8. The air pump according to claim 7, characterized in that A sealing protrusion for sealing the opening of the airbag protrudes from the lower end surface of the upper cover body, and the sealing protrusion is located next to the upper splicing groove; the upper cover body is also provided with a connecting groove separated from the upper splicing groove, and the connecting groove partially extends into the sealing protrusion, and the one-way valve sheet covers the part of the connecting groove located outside the sealing protrusion.
9. The air pump according to claim 8, characterized in that The upper splicing grooves are multiple and radially arranged with the external interface as the center, and each of the upper splicing grooves corresponds to one of the blocking protrusions, one air bag and one communicating groove.
10. A step-down blood pressure monitor comprising a main box, a control circuit board assembled in the main box, and an air tube, characterized in that: The step-down sphygmomanometer also includes an air pump according to any one of claims 1 to 9, one end of the trachea is connected to the external interface, the other end of the trachea has an external connector exposed to the outside, and the control circuit board is electrically connected to the air pump.