Blood pressure measurement arm cuff device and tunnel sphygmomanometer

Abstract

The application belongs to the technical field of medical apparatus and discloses a blood pressure measuring arm cylinder device and a tunnel type sphygmomanometer, wherein the blood pressure measuring arm cylinder device comprises an arm cylinder, an air bag assembly, a holder, a driving assembly and a detection assembly; the arm cylinder has a central hole; the air bag assembly is located in the central hole; the holder is located in the central hole and outside the air bag assembly; the holder has a first state and a second state; the diameter of the holder in the first state is larger than the diameter of the holder in the second state; the driving assembly is arranged on the arm cylinder and is used for driving the holder to move between the first state and the second state; the driving assembly has a transmission shaft; the detection assembly comprises a trigger connected to the arm cylinder in a rotating mode and a detection switch arranged on the arm cylinder; the trigger can rotate along with the transmission shaft, and the rotating speed of the trigger is smaller than the rotating speed of the transmission shaft; when the holder is in the second state, the trigger can trigger the detection switch, thereby ensuring the service life of the tunnel type sphygmomanometer.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, specifically relating to a blood pressure measuring arm and a tunnel-type blood pressure monitor. Background Technology

[0002] Tunnel blood pressure monitors, also known as arm cuff blood pressure monitors, do not require manual wrapping of the cuff compared to ordinary electronic blood pressure monitors, thus offering a high level of automation.

[0003] Currently, common tunnel-type blood pressure monitors on the market typically include a main unit and a blood pressure measuring arm connected to the main unit. The arm includes the arm, an air bladder assembly inside the arm, a retainer located inside the arm and outside the air bladder assembly, and a drive assembly located in the arm. The drive assembly actuates the retainer, causing its diameter to change. When using a tunnel-type blood pressure monitor, the user first inserts their arm into the arm, positioning the air bladder assembly outside the user's arm. Then, the drive assembly actuates the retainer, causing its diameter to gradually decrease under the action of the drive assembly, ultimately causing the air bladder assembly to... The cuff is secured to the user's arm, and the main unit inflates the airbag assembly and measures the user's blood pressure. However, if no arm is inserted into the armhole and the user accidentally touches the tunnel sphygmomanometer, causing the drive assembly to operate, the drive assembly will drive the cuff, causing the diameter of the cuff to gradually decrease. When the diameter of the cuff reaches its limit and can no longer decrease, the drive assembly will continue to operate, resulting in an abnormally increased load on the drive assembly, leading to an abnormally increased current in the drive assembly. This can cause the drive assembly to be prone to short circuit failure, thus affecting the service life of the tunnel sphygmomanometer. Utility Model Content

[0004] This application provides a blood pressure measuring armhole device to avoid short circuit failure in tunnel blood pressure monitors caused by accidental triggering, thereby ensuring the service life of tunnel blood pressure monitors.

[0005] The technical solution adopted in this application is as follows: A blood pressure measuring arm sleeve device, comprising: An arm tube, the interior of which has a central hole through which an arm passes; An airbag assembly, wherein the airbag assembly is located in the central hole and extends circumferentially along the central hole, the airbag assembly including an air bag and a bushing fitted over the air bag; A retainer located in the central hole and outside the airbag assembly, the retainer being able to be rolled up to have a first state and a second state, the diameter of the retainer in the first state being larger than the diameter of the retainer in the second state; A drive assembly, disposed on the boom and used to drive the cage to move between the first state and the second state, the drive assembly having a drive shaft; The detection component includes a trigger connected to the boom and a detection switch disposed on the boom. The trigger can rotate with the drive shaft, and the rotational speed of the trigger is less than the rotational speed of the drive shaft. When the cage is in the second state, the trigger can trigger the detection switch.

[0006] By adopting the above technical solution, when using a tunnel sphygmomanometer with the blood pressure measuring arm tube device of this application to measure a user's blood pressure, the user first inserts their arm into the central hole of the arm tube so that the air bladder assembly is located outside the user's arm. Then, the drive assembly is activated, and the drive assembly drives the retainer to move from the first state to the second state, thereby gradually reducing the diameter of the retainer so that the air bladder assembly is gradually tightened to the user's arm. Then, the main unit of the tunnel sphygmomanometer supplies air to the air bladder assembly and completes the measurement of the user's blood pressure.

[0007] When no arm is inserted into the armhole and the user accidentally activates the tunnel sphygmomanometer, causing the drive assembly to operate, the drive assembly drives the cage, moving it from a first state to a second state. Since the trigger element rotates with the drive shaft, it rotates along with the drive assembly's shaft during the cage's movement. In the second state, the trigger element activates the detection switch. When the cage reaches the second state, the trigger element moves to a position where it can activate the detection switch. This trigger sends a signal to the drive assembly, stopping it and preventing further reduction in cage diameter. This avoids an abnormal increase in load on the drive assembly due to the cage reaching its limit and its diameter being unable to decrease further, thus preventing abnormal current increases and short-circuit faults. This ensures the lifespan of the tunnel sphygmomanometer.

[0008] Furthermore, since the rotational speed of the trigger element is less than that of the drive shaft, it ensures that the difference between the diameter of the cage in the first state and the diameter in the second state is maintained. This avoids the situation where the winding range of the cage is reduced due to the rotational speed of the trigger element being the same as or greater than that of the drive shaft, thus affecting the applicability of the tunnel sphygmomanometer. This ensures the flexibility of the tunnel sphygmomanometer. On the other hand, compared with the solution where the rotational speed of the trigger element is the same as or greater than that of the drive shaft, it can also reduce the load on the drive component, thereby reducing the power of the drive component. This allows for the configuration of a relatively low-power drive component for the tunnel sphygmomanometer, reducing the manufacturing cost of the tunnel sphygmomanometer and also achieving the effect of reducing the energy consumption of the tunnel sphygmomanometer.

[0009] Optionally, the detection switch includes a first limit switch, the first limit switch having a first swing arm, the trigger having a first pressing part capable of contacting and cooperating with the first swing arm, and when the retainer moves to the second state, the first swing arm moves in a direction away from the location of the first pressing part under the action of the first pressing part, so that the contact system of the first limit switch switches to the normally closed state.

[0010] By adopting the above technical solution, when the drive assembly drives the cage, the trigger element rotates with the drive shaft of the drive assembly, and the first pressing part rotates with the trigger element. When the cage moves to the second state, the first pressing part presses the first swing arm, so that the first swing arm moves in the direction away from the location of the first pressing part under the action of the first pressing part, thereby causing the contact system of the first limit switch to the normally closed state. Thus, the normally closed state of the contact system of the first limit switch can be used to determine that the cage has moved to the second state, thereby realizing the triggering of the detection switch by the trigger element when the cage moves to the second state.

[0011] Optionally, the detection switch further includes a second limit switch having a second swing arm, and the trigger having a second pressing part capable of contacting and engaging with the second swing arm. When the cage moves to the second state or any state between the first state and the second state, the second swing arm moves in a direction away from the second pressing part under the action of the second pressing part, so that the contact system of the second limit switch switches to the normally closed state.

[0012] By adopting the above technical solution, when the drive assembly moves the cage from the first state to the second state, the trigger rotates with the drive shaft of the drive assembly, and the second pressing part rotates with the trigger, so that the second pressing part presses the second swing arm, thereby causing the second swing arm to move in the direction away from the second pressing part under the action of the second pressing part, thus switching the contact system of the second limit switch to the normally closed state; when the cage moves to the second state, the first swing arm moves in the direction away from the first pressing part under the action of the first pressing part, so that the contact system of the first limit switch switches to the normally closed state. At this time, the drive assembly receives the signal that the contact system of the first limit switch is closed, and then the drive assembly reverses the drive of the cage, so that the cage moves from the second state to the first state; when the cage moves to the first state, the first pressing part and the first swing arm avoid each other, and the first limit switch... When the contact system of the switch is switched to the normally open state, the second pressing part and the second swing arm form a clearance, and the contact system of the second limit switch is switched to the normally open state. At this time, the drive component receives the opening signal of the contact system of the first limit switch and the second limit switch, and then the drive component stops working so that the cage stops in the first state. During this process, the drive component can drive the cage according to the opening and closing signals of the first limit switch and the second limit switch to realize the detection of whether an arm is inserted into the arm cylinder of the tunnel blood pressure monitor and the automatic movement of the cage from the second state to the first position, so as to reduce the difficulty of operation for users. At the same time, it also makes it easier for users to quickly insert their arms into the arm cylinder when they have actual measurement needs, so as to avoid the situation where users have actual measurement needs but have to wait for the cage to move from the second state to the first state, thereby improving the measurement efficiency of the tunnel blood pressure monitor and improving the user experience.

[0013] Optionally, the trigger includes a first follower block, the outer peripheral surface of the first follower block having a first arc-shaped surface, a second arc-shaped surface and a transition surface located between the first arc-shaped surface and the second arc-shaped surface, the centers of the first arc-shaped surface and the second arc-shaped surface are both located on the rotation axis of the trigger, the radius of the first arc-shaped surface is greater than the radius of the second arc-shaped surface, and the first arc-shaped surface constitutes the first extrusion part; And / or, the trigger includes a second follower block, the outer peripheral surface of the second follower block having a third arcuate surface and a clearance surface, the center of the third arcuate surface being located on the rotation axis of the trigger, the radius of the third arcuate surface being greater than the distance from any point on the clearance surface to the rotation axis of the trigger, and the third arcuate surface constituting the second extrusion part.

[0014] By adopting the above technical solution, since the centers of the first and second arc-shaped surfaces are both located on the rotation axis of the trigger element, and the radius of the first arc-shaped surface is larger than that of the second arc-shaped surface, the first arc-shaped surface constitutes the first pressing part. This allows the first arc-shaped surface to press the first swing arm, so that the first movement moves in the direction away from the first pressing part under the action of the first pressing part. At the same time, since the first arc-shaped surface constitutes the first pressing part, the smoothness of the sliding between the first swing arm and the first pressing part can be increased, so as to avoid the possible jamming when the first swing arm and the first pressing part move relative to each other. This ensures the smoothness of the drive assembly driving the cage, and thus ensures the stable operation of the tunnel blood pressure monitor.

[0015] Because the arc of the third arc surface is located on the rotation axis of the trigger, and the radius of the third arc surface is greater than the distance from any point on the clearance surface to the rotation axis of the trigger, the third arc surface constitutes the second pressing part. This allows the third arc surface to press the second swing arm, enabling the second swing arm to move away from the second pressing part under the action of the second pressing part. At the same time, since the third arc surface constitutes the second pressing part, it can increase the smoothness of the relative sliding between the second swing arm and the second pressing part, thus avoiding possible jamming when the second swing arm and the second pressing part move relative to each other. This ensures the smoothness of the drive assembly driving the cage, thereby ensuring the stable operation of the tunnel sphygmomanometer.

[0016] Optionally, the detection component further includes a separator plate located between the first limit switch and the second limit switch.

[0017] By adopting the above technical solution, since the partition plate is located between the first limit switch and the second limit switch, it achieves the integration of the first limit switch and the second limit switch together, thereby reducing the assembly difficulty of the detection components and improving the production efficiency of the blood pressure measuring arm cylinder device. On the other hand, it increases the distance between the first limit switch and the second limit switch, thereby increasing the distance between the first swing arm and the second swing arm, thus avoiding the possibility of interference between the first swing arm and the second swing arm, and ensuring the working stability of the blood pressure measuring arm cylinder device.

[0018] Optionally, the drive shaft is provided with a driving gear, and the trigger includes a driven gear that meshes with and is connected to the driving gear, wherein the diameter of the driven gear is larger than the diameter of the driving gear.

[0019] By adopting the above technical solution, since the drive shaft is equipped with a driving gear and the trigger includes a driven gear that meshes and drives with the driving gear, and the diameter of the driven gear is larger than the diameter of the driving gear, the transmission connection between the trigger and the drive shaft is realized on the one hand, so that the trigger can rotate with the drive shaft, while ensuring the stability of the transmission connection between the trigger and the drive shaft and reducing the assembly difficulty of the blood pressure measuring arm cylinder device; and since the diameter of the driven gear is larger than the diameter of the driving gear, the rotational speed of the trigger is less than the rotational speed of the drive shaft.

[0020] Optionally, the drive assembly includes a synchronous pulley disposed on the drive shaft and a synchronous belt meshing with and driving the synchronous pulley. The synchronous belt is located outside the cage and is fixedly connected to the cage. The diameter of the synchronous pulley is larger than the diameter of the drive gear.

[0021] By adopting the above technical solution, since the drive assembly includes a synchronous pulley located on the drive shaft and a synchronous belt meshing and drivingly connected to the synchronous pulley, and the synchronous belt is fixedly connected to the cage, the cage can be driven by rotating the synchronous pulley to achieve movement of the cage between the first and second states. This also ensures the driving efficiency of the drive assembly for the cage. Furthermore, since the synchronous belt is located on the outside of the cage, when the user inserts their arm into the arm tube, the synchronous belt and the user's arm are isolated by the airbag assembly and the cage, improving the user's comfort during blood pressure measurement and thus enhancing the user experience. Additionally, since the diameter of the synchronous pulley is larger than that of the drive gear, the number of rotations required for the drive shaft when the cage moves from the first to the second state can be reduced, thereby reducing the number of rotations of the drive gear and reducing the rotation angle of the trigger element, ensuring the applicability of the tunnel-type blood pressure monitor.

[0022] Optionally, the synchronizing pulley is located between the synchronizing belt and the retainer, and the blood pressure measuring arm cylinder device further includes a cover disposed on the arm cylinder, and a clamping wheel is rotatably connected inside the cover, the clamping wheel being located on the side of the synchronizing belt opposite to the synchronizing pulley.

[0023] By adopting the above technical solution, since the clamping wheel is located on the side of the synchronous belt away from the synchronous pulley, it can guide and limit the synchronous belt, so that the synchronous belt always maintains engagement with the synchronous pulley. This ensures both the driving efficiency of the drive assembly on the cage and the connection stability between the synchronous pulley and the synchronous belt. Furthermore, since the clamping wheel is rotatably connected to the cover, its stability is increased, ensuring the guiding and limiting effect of the clamping wheel on the synchronous belt. It also reduces the assembly difficulty of the clamping wheel, thereby improving the assembly efficiency of the blood pressure measuring arm sleeve device.

[0024] Optionally, a bearing is sleeved on the outside of the drive shaft, and the cover is provided with a receiving groove for accommodating the bearing, the receiving groove having a stop wall located at the end of the bearing.

[0025] By adopting the above technical solution, since the drive shaft is externally fitted with a bearing and the cover is provided with a receiving groove for accommodating the bearing, on the one hand, the friction between the drive shaft and the arm cylinder can be reduced, thereby reducing the rotational resistance of the drive shaft and thus reducing the load on the drive component. At the same time, it can also reduce the noise generated by the blood pressure measuring arm cylinder device during operation. On the other hand, the drive shaft can be fixed to the arm cylinder by pressing the outer ring of the bearing with the cover, thereby reducing the difficulty of installing the drive shaft and improving the assembly efficiency of the blood pressure measuring arm cylinder device. Furthermore, since the receiving groove has a stop wall located at the end of the bearing, the stop wall can be used to limit the bearing, thereby increasing the stability of the bearing and ensuring the stability of the blood pressure measuring arm cylinder device.

[0026] Optionally, the blood pressure measuring arm sleeve device further includes a bracket disposed on the arm sleeve, the synchronous belt having a first end fixedly connected to the bracket and a second end opposite to the first end, the retainer including a wrapping layer, the wrapping layer having a winding section and a support section, the end of the winding section near the support section being fixedly connected to the bracket, the end of the winding section away from the support section being fixedly connected to the second end, and one end of the bushing being sleeved on the outside of the support section.

[0027] By adopting the above technical solution, since the end of the take-up section near the support section is fixedly connected to the bracket, and one end of the bushing is sleeved on the outside of the support section, the support section can be used to support the airbag assembly. This ensures that when the cage moves between the first and second states, one end of the airbag assembly will not move relative to the support section, thus ensuring the airbag assembly's wrapping effect on the user's arm and guaranteeing the accuracy of blood measurement. Furthermore, since the end of the take-up section away from the support section is fixedly connected to the second end, the cage can follow the synchronous belt by moving with the synchronous belt. Moreover, since the first end of the synchronous belt is fixedly connected to the synchronous belt, the bracket can be used to fix the first end of the synchronous belt, so that when the synchronous pulley and the synchronous belt rotate relative to each other, the synchronous belt can drive the cage, ensuring the driving efficiency of the drive assembly for the cage.

[0028] Optionally, the retainer further includes a tension layer, one end of which is fixedly connected to the second end, and the other end of which is fixedly connected to the airbag assembly.

[0029] By adopting the above technical solution, since one end of the tension layer is fixedly connected to the second end and the other end of the tension layer is fixedly connected to the airbag assembly, when the drive assembly drives the retainer to move from the first state to the second state, the tension layer can apply tension to the airbag assembly under the driving action of the synchronous belt, so that the airbag assembly wraps around the user's arm, thereby ensuring the wrapping effect of the airbag assembly on the user's arm. When the drive assembly drives the retainer to move from the second state to the first state, it can also use the tension layer to push the airbag assembly, so that the diameter of the airbag assembly gradually increases, so as to facilitate the user to put their arm into the central hole, thereby improving the user experience.

[0030] This application also provides a tunnel-type blood pressure monitor to avoid short-circuit failure caused by accidental triggering, thereby ensuring the service life of the tunnel-type blood pressure monitor.

[0031] A tunnel-type blood pressure monitor includes a main unit and a blood pressure measuring arm as described above.

[0032] By adopting the above technical solution, since the tunnel blood pressure monitor in this application uses the blood pressure measuring arm device, it is possible to use the trigger to trigger the detection switch and control the drive component to stop moving, so as to avoid the drive component being prone to short circuit due to abnormal increase in current, thereby ensuring the service life of the tunnel blood pressure monitor.

[0033] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. The blood pressure measuring arm cylinder device of this application includes an arm cylinder, an airbag assembly, a retainer, a drive assembly, and a detection assembly. The arm cylinder has a central hole through which the arm passes. The airbag assembly is located in the central hole and extends circumferentially along the central hole. The airbag assembly includes an air bag and a bushing fitted over the air bag. The retainer is located in the central hole and outside the airbag assembly. The retainer can be wound to have a first state and a second state. The diameter of the retainer in the first state is larger than the diameter of the retainer in the second state. The drive assembly is located in the arm cylinder and is used to drive the retainer to move between the first state and the second state. The drive assembly has a drive shaft. The detection assembly includes components rotatably connected to... The arm cylinder has a trigger and a detection switch. The trigger can rotate with the drive shaft, and the rotation speed of the trigger is less than that of the drive shaft. When the cage is in the second state, the trigger can trigger the detection switch, which can send a signal to the drive assembly to stop the drive assembly from working. This prevents the diameter of the cage from decreasing further, thus avoiding an abnormal increase in the load on the drive assembly due to the cage moving to its limit and the diameter of the cage being unable to decrease further. This also prevents an abnormal increase in the current of the drive assembly, thus avoiding a short circuit fault in the drive assembly and ensuring the service life of the tunnel blood pressure monitor.

[0034] 2. The detection switch in this application includes a first limit switch, which has a first swing arm. The trigger has a first pressing part that can contact and cooperate with the first swing arm. When the cage moves to the second state, the first swing arm moves in a direction away from the first pressing part under the action of the first pressing part, so that the contact system of the first limit switch switches to the normally closed state. Thus, the normally closed state of the contact system of the first limit switch can be used to determine that the cage has moved to the second state, thereby realizing the triggering of the detection switch by the trigger when the cage moves to the second state.

[0035] 3. The detection switch in this application also includes a second limit switch. The second limit switch has a second swing arm, and the trigger has a second pressing part that can contact and cooperate with the second swing arm. When the cage moves to the second state or any state between the first state and the second state, the second swing arm moves in the direction away from the second pressing part under the action of the second pressing part, so that the contact system of the second limit switch switches to the normally closed state. This enables the tunnel blood pressure monitor to detect whether an arm is inserted into the arm cylinder and for the cage to automatically move from the second state to the first position, thereby reducing the user's operating difficulty. At the same time, it also makes it easier for the user to quickly insert their arm into the arm cylinder when there is an actual measurement need, so as to avoid the situation where the user has to wait for the cage to move from the second state to the first state when there is an actual measurement need, thereby improving the measurement efficiency of the tunnel blood pressure monitor and improving the user experience. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a partial structural schematic diagram of the blood pressure measuring armhole device described in one embodiment of this application; Figure 2 This is a schematic diagram of another view of the structure of a portion of the blood pressure measuring armhole device described in one embodiment of this application; Figure 3 This is another perspective structural schematic diagram of a portion of the blood pressure measuring armhole device described in one embodiment of this application; Figure 4 This is a partial structural schematic diagram of the blood pressure measuring armhole device according to one embodiment of this application, with the cover omitted in the figure; Figure 5 This is a partial structural schematic diagram of the blood pressure measuring armhole device according to one embodiment of this application. The cover, detection component, and drive component are omitted in the figure. Figure 6 This is a schematic diagram of the detection component described in one embodiment of this application; Figure 7 This is a schematic diagram of the detection component described in one embodiment of this application from another perspective; Figure 8 This is a partial structural cross-sectional view of the blood pressure measuring armhole device described in one embodiment of this application; Figure 9 for Figure 8 Enlarged view of part A in the middle; Figure 10 This is a cross-sectional view of the cage and the timing belt according to one embodiment of this application; Figure 11 This is a schematic diagram of the structure of the self-locking geared motor described in one embodiment of this application; Figure 12 This is a schematic diagram of the structure of the cover body according to one embodiment of this application; Figure 13 This is a schematic diagram of the structure of the drive shaft described in one embodiment of this application; Figure 14 This is a schematic diagram showing the positional relationship between the first swing arm of the first limit switch and the trigger when the cage is in a first state according to one embodiment of this application; Figure 15 This is a schematic diagram showing the positional relationship between the first swing arm of the first limit switch and the trigger when the cage is in the second state according to one embodiment of this application.

[0037] Figure label: 1. Boom; 11. Mounting bracket; 12. Cover; 121. Anchoring wheel; 122. Receiving groove; 123. Stop wall; 13. Shaft bracket; 14. Fixing bracket; 2. Airbag assembly; 3. Retainer; 31. Wrapping layer; 311. Rewinding section; 312. Support section; 32. Applying layer; 321. Clamping plate; 4. Drive assembly; 41. Drive shaft; 411. Drive gear; 412. Bearing; 42. Synchronous pulley; 43. Synchronous belt; 44. Self-locking geared motor; 5. 51. Detection component; 51. Trigger; 511. First follower block; 512. Second follower block; 513. Driven gear; 514. First arc-shaped surface; 515. Second arc-shaped surface; 516. Transition surface; 517. Third arc-shaped surface; 518. Clearance surface; 52. Detection switch; 521. First limit switch; 522. Second limit switch; 523. First swing arm; 524. Second swing arm; 53. Divider plate; 6. Bracket; 61. C-shaped frame; 62. Fixing plate. Detailed Implementation

[0038] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0040] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0043] Reference Figures 1 to 15 A blood pressure measuring armhole device is disclosed, comprising an armhole 1, an airbag assembly 2, a retainer 3, a drive assembly 4, and a detection assembly 5. The armhole 1 has a central hole through which the arm passes. The airbag assembly 2 is located in the central hole and extends circumferentially along the central hole. The airbag assembly 2 includes an air bag and a bushing fitted over the air bag. The retainer 3 is located in the central hole and outside the airbag assembly 2. The retainer 3 can be wound to have a first state and a second state. The diameter of the retainer 3 in the first state is larger than the diameter of the retainer 3 in the second state. The drive assembly 4 is located in the armhole 1 and is used to drive the retainer 3 to move between the first state and the second state. The drive assembly 4 has a drive shaft 41. The detection assembly 5 includes a trigger 51 rotatably connected to the armhole 1 and a detection switch 52 located in the armhole 1. The trigger 51 can rotate with the drive shaft 41, and the rotational speed of the trigger 51 is less than the rotational speed of the drive shaft 41. When the retainer 3 is in the second state, the trigger 51 can trigger the detection switch 52.

[0044] Understandably, the central hole passes through the arm cylinder 1 so that the user's arm can pass through the central hole; when the retainer 3 moves from the first state to the second state, the retainer 3 is wound up so that the diameter of the retainer 3 gradually decreases; while when the retainer 3 moves from the second state to the first state, the retainer 3 is unwound so that the diameter of the retainer 3 gradually increases.

[0045] When using a tunnel sphygmomanometer with the blood pressure measuring arm tube device of this application to measure a user's blood pressure, the user first inserts their arm into the central hole of the arm tube 1 so that the air bladder assembly 2 is located outside the user's arm. Then, the drive assembly 4 is activated, which drives the retainer 3 to move from the first state to the second state, thereby gradually reducing the diameter of the retainer 3 so that the air bladder assembly 2 is gradually tightened around the user's arm. Then, the main unit of the tunnel sphygmomanometer supplies air to the air bladder assembly 2 and completes the measurement of the user's blood pressure.

[0046] When no arm is inserted into the armhole 1 and the user accidentally activates the tunnel blood pressure monitor, causing the drive assembly 4 to operate, the drive assembly 4 drives the retainer 3 to move from the first state to the second state. Since the trigger element 51 can rotate with the drive shaft 41, it rotates along with the drive shaft 41 during the drive assembly 4's operation of the retainer 3. Furthermore, when the retainer 3 is in the second state, the trigger element 51 can trigger the detection switch 52, thus causing the trigger element 51 to move to a position where it can activate the detection switch 52 when the retainer 3 moves to the second state. When switch 52 is triggered, trigger 51 triggers detection switch 52 to send a signal to drive assembly 4, causing drive assembly 4 to stop working. This prevents the diameter of cage 3 from decreasing further, thus avoiding an abnormal increase in the load on drive assembly 4 due to cage 3 moving to its limit and its diameter no longer decreasing. This also prevents an abnormal increase in the current of drive assembly 4, thus avoiding short circuit faults in drive assembly 4 and ensuring the service life of tunnel blood pressure monitor.

[0047] Furthermore, since the rotational speed of the trigger 51 is less than that of the drive shaft 41, on the one hand, it can ensure the difference between the diameter of the cage 3 in the first state and the diameter in the second state, thus avoiding the situation where the winding range of the cage 3 is reduced due to the rotational speed of the trigger 51 being the same as or greater than that of the drive shaft 41, which would affect the applicability of the tunnel sphygmomanometer. This ensures the flexibility of the tunnel sphygmomanometer. On the other hand, compared with the scheme where the rotational speed of the trigger 51 is the same as or greater than that of the drive shaft 41, it can also reduce the load on the drive component 4, thereby reducing the power of the drive component 4. This allows for the configuration of a relatively low-power drive component 4 for the tunnel sphygmomanometer, reducing the manufacturing cost of the tunnel sphygmomanometer and also achieving the effect of reducing the energy consumption of the tunnel sphygmomanometer.

[0048] This application does not specifically limit the structure of the detection switch 52; preferably, refer to... Figure 6 and Figure 7 The detection switch 52 includes a first limit switch 521, the first limit switch 521 has a first swing arm 523, and the trigger 51 has a first pressing part that can contact and cooperate with the first swing arm 523. When the retainer 3 moves to the second state, the first swing arm 523 moves in the direction away from the first pressing part under the action of the first pressing part, so that the contact system of the first limit switch 521 switches to the normally closed state.

[0049] Understandably, the first swing arm 523 can move relative to the first limit switch 521 under the action of the first compression part; the blood pressure measuring arm cylinder device also includes an arm cylinder circuit board or a main unit of the tunnel blood pressure monitor with a main control board, and the first limit switch 521 and the drive component 4 are electrically connected to the arm cylinder circuit board or the main control board, so that the arm cylinder circuit board or the main control board can control the movement of the drive component 4 through the circuit state change of the contact system of the first limit switch 521.

[0050] When the drive assembly 4 drives the cage 3, the trigger 51 rotates with the drive shaft 41 of the drive assembly 4, and the first pressing part rotates with the trigger 51. When the cage 3 moves to the second state, the first pressing part presses the first swing arm 523, so that the first swing arm 523 moves in the direction away from the first pressing part under the action of the first pressing part. This causes the contact system of the first limit switch 521 to switch from the normally open state to the normally closed state. Thus, the normally closed state of the contact system of the first limit switch 521 can be used to determine that the cage 3 has moved to the second state, thereby realizing the triggering of the detection switch 52 by the trigger 51 when the cage 3 moves to the second state.

[0051] This application does not specifically limit the formation method of the first extrusion section; preferably, refer to... Figure 6 and Figure 7 The trigger 51 includes a first follower block 511. The outer peripheral surface of the first follower block 511 has a first arc-shaped surface 514, a second arc-shaped surface 515, and a transition surface 516 located between the first arc-shaped surface 514 and the second arc-shaped surface 515. The centers of the first arc-shaped surface 514 and the second arc-shaped surface 515 are both located on the rotation axis of the trigger 51. The radius of the first arc-shaped surface 514 is larger than the radius of the second arc-shaped surface 515, and the first arc-shaped surface 514 constitutes the first extrusion part.

[0052] It is understandable that the distance from any point on the transition surface 516 to the rotation axis of the trigger 51 is less than the radius of the first arc surface 514.

[0053] It should be noted that the above statement that "the centers of the first arc surface 514 and the second arc surface 515 are both located on the rotation axis of the trigger 51" means that the center of the circle containing the first arc surface 514 and the center of the circle containing the second arc surface 515 are both located on the rotation axis of the trigger 51; while the above statement that "the radius of the first arc surface 514 is greater than the radius of the second arc surface 515" means that the radius of the circle containing the first arc surface 514 is greater than the radius of the circle containing the second arc surface 515.

[0054] Since the centers of the first arc-shaped surface 514 and the second arc-shaped surface 515 are both located on the rotation axis of the trigger 51, and the radius of the first arc-shaped surface 514 is larger than the radius of the second arc-shaped surface 515, the first arc-shaped surface 514 constitutes the first pressing part. Thus, the first arc-shaped surface 514 can be used to press the first swing arm 523, so that the first movement moves in the direction away from the first pressing part under the action of the first pressing part. At the same time, since the first arc-shaped surface 514 constitutes the first pressing part, the smoothness of the sliding between the first swing arm 523 and the first pressing part can be increased, so as to avoid the possible jamming when the first swing arm 523 and the first pressing part move relative to each other. This ensures the smoothness of the drive assembly 4 driving the retainer 3, and thus ensures the stable operation of the tunnel blood pressure monitor.

[0055] This application does not specify the contact method between the first swing arm 523 and the first follower block 511. Preferably, refer to Figure 14 and Figure 15 The first swing arm 523 always maintains contact with the outer peripheral surface of the first follower block 511. When the drive assembly 4 drives the retainer 3 to move from the first state to the second state, the first follower block 511 gradually switches from contacting the first swing arm 523 with the second arc-shaped surface 515 to contacting the first swing arm 523 with the transition surface 516. This causes the first swing arm 523 to gradually move away from the trigger member 51 under the action of the transition surface 516. When the retainer 3 moves to the second state, the first follower block 511 switches to contacting the first swing arm 523 with the first arc-shaped surface 514. At this time, the first swing arm 523 moves to a position where it can switch the contact system of the first limit switch 521, so that the contact system of the first limit switch 521 switches from the normally open state to the normally closed state. In other embodiments, the first follower block 511 can only contact the first swing arm 523 and press it when the retainer 3 is in the second state.

[0056] In other embodiments, the first pressing portion may also be formed as a protrusion structure provided on the trigger 51.

[0057] In a preferred embodiment, refer to Figure 6 and Figure 7 The detection switch 52 also includes a second limit switch 522, which has a second swing arm 524. The trigger 51 has a second pressing part that can contact and cooperate with the second swing arm 524. When the holder 3 moves to the second state or any state between the first state and the second state, the second swing arm 524 moves in the direction away from the second pressing part under the action of the second pressing part, so that the contact system of the second limit switch 522 switches to the normally closed state.

[0058] Understandably, the second swing arm 524 can move relative to the second limit switch 522 under the action of the second pressing part; the second limit switch 522 is electrically connected to the arm cylinder circuit board or the main control board so that the arm cylinder circuit board or the main control board can control the movement of the drive component 4 through the circuit state change of the contact system of the second limit switch 522.

[0059] When the drive assembly 4 moves the cage 3 from the first state to the second state, the trigger 51 rotates with the drive shaft 41 of the drive assembly 4, and the second pressing part rotates with the trigger 51, so that the second pressing part presses the second swing arm 524, and then the second swing arm 524 moves in the direction away from the second pressing part under the action of the second pressing part, thereby switching the contact system of the second limit switch 522 from the normally open state to the normally closed state.

[0060] When the cage 3 moves to the second state, the first swing arm 523 moves in the direction away from the first pressing part under the action of the first pressing part, so that the contact system of the first limit switch 521 switches to the normally closed state. At this time, the drive assembly 4 receives the signal that the contact system of the first limit switch 521 is closed, and then the drive assembly 4 drives the cage 3 in the opposite direction so that the cage 3 moves from the second state to the first state.

[0061] When the cage 3 moves to the first state, the first pressing part and the first swing arm 523 make way for each other, the contact system of the first limit switch 521 switches to the normally open state, the second pressing part and the second swing arm 524 make way for each other, and the contact system of the second limit switch 522 switches to the normally open state. At this time, the drive assembly 4 receives the opening signal of the contact system of the first limit switch 521 and the second limit switch 522, and then the drive assembly 4 stops working so that the cage 3 stops in the first state.

[0062] During this process, the drive component 4 can drive the retainer 3 according to the opening and closing signals of the first limit switch 521 and the second limit switch 522, so as to realize the detection of whether an arm is inserted into the arm tube 1 by the tunnel blood pressure monitor and the automatic movement of the retainer 3 from the second state to the first position, thereby reducing the difficulty of operation for users. At the same time, it also makes it easier for users to quickly insert their arms into the arm tube 1 when they have actual measurement needs, so as to avoid the situation where users have actual measurement needs but still have to wait for the retainer 3 to move from the second state to the first state, thereby improving the measurement efficiency of the tunnel blood pressure monitor and improving the user experience.

[0063] This application does not specifically limit the method of forming the second extrusion section; preferably, refer to... Figure 6 and Figure 7The trigger 51 includes a second follower block 512. The outer peripheral surface of the second follower block 512 has a third arc-shaped surface 517 and a clearance surface 518. The center of the third arc-shaped surface 517 is located on the rotation axis of the trigger 51. The radius of the third arc-shaped surface 517 is greater than the distance from any point on the clearance surface 518 to the rotation axis of the trigger 51. The third arc-shaped surface 517 constitutes the second pressing part.

[0064] It should be noted that the above-mentioned "the center of the third arc surface 517 is located on the rotation axis of the trigger 51" means that the center of the circle containing the third arc surface 517 is located on the rotation axis of the trigger 51; while the above-mentioned "radius of the third arc surface 517" refers to the radius of the circle containing the third arc surface 517.

[0065] Since the arc of the third arc surface 517 is located on the rotation axis of the trigger 51, and the radius of the third arc surface 517 is greater than the distance from any point on the avoidance surface 518 to the rotation axis of the trigger 51, the third arc surface 517 constitutes the second pressing part. Thus, the third arc surface 517 can be used to press the second swing arm 524, so that the second swing arm 524 moves in the direction away from the second pressing part under the action of the second pressing part. At the same time, since the third arc surface 517 constitutes the second pressing part, the smoothness of the relative sliding of the second swing arm 524 and the second pressing part can be increased, so as to avoid the possible jamming when the second swing arm 524 and the second pressing part move relative to each other. This ensures the smoothness of the drive assembly 4 driving the cage 3, and thus ensures the stable operation of the tunnel blood pressure monitor.

[0066] This application does not specify the contact method between the second swing arm 524 and the second follower block 512. Preferably, refer to Figure 14 and Figure 15 The second swing arm 524 always maintains contact with the outer peripheral surface of the second follower block 512. When the drive assembly 4 drives the retainer 3 to move from the first state to the second state, the second follower block 512 gradually switches from contact between the avoidance surface 518 and the second swing arm 524 to contact between the third arc-shaped surface 517 and the second swing arm 524. This causes the second swing arm 524 to gradually move away from the trigger member 51 under the squeezing action of the transition surface 516. When the second follower block 512 switches to contact between the third arc-shaped surface 517 and the second swing arm 524, the second swing arm 524 moves to a position where it can switch the contact system of the second limit switch 522, so that the contact system of the second limit switch 522 switches to the normally closed state. In other embodiments, only the third arc-shaped surface 517 can contact the second swing arm 524.

[0067] In other embodiments, the second pressing portion may also be formed as a protrusion structure provided on the trigger member 51.

[0068] Preferably, rollers are rotatably connected to the ends of the first swing arm 523 and the second swing arm 524, so that the first swing arm 523 contacts the outer peripheral surface of the first follower block 511 through the rollers at its own ends, thereby reducing the friction between the first swing arm 523 and the first follower block 511, and further increasing the smoothness of the drive assembly 4 when driving the cage 3; the second swing arm 524 contacts the outer peripheral surface of the second follower block 512 through the rollers at its own ends, thereby reducing the friction between the second swing arm 524 and the second follower block 512, and further increasing the smoothness of the drive assembly 4 when driving the cage 3.

[0069] Furthermore, refer to Figure 6 The detection component 5 also includes a partition plate 53, which is located between the first limit switch 521 and the second limit switch 522. This partition plate 53 integrates the first limit switch 521 and the second limit switch 522 together, thereby reducing the assembly difficulty of the detection component 5 and improving the production efficiency of the blood pressure measuring arm device. On the other hand, it increases the distance between the first limit switch 521 and the second limit switch 522, thereby increasing the distance between the first swing arm 523 and the second swing arm 524. This avoids the possibility of interference between the first swing arm 523 and the second swing arm 524, thus ensuring the working stability of the blood pressure measuring arm device.

[0070] This application does not specify the connection method between the detection component 5 and the boom 1. Preferably, refer to... Figure 6 and Figure 7 The boom 1 is fixedly connected to a mounting bracket 11. A trigger 51 is rotatably connected to the mounting bracket 11. A first limit switch 521 and a second limit switch 522 are both fixedly connected to the mounting bracket 11, integrating the trigger 51, the first limit switch 521, and the second limit switch 522 together. This facilitates the assembly of the detection component 5, thereby improving the assembly efficiency of the detection component 5. In other embodiments, the trigger 51, the first limit switch 521, and the second limit switch 522 can also be connected to the boom 1 via their respective corresponding brackets.

[0071] In other embodiments, the design of the second limit switch 522 can be omitted; or, the detection switch 52 can be a proximity switch, and the trigger 51 can be provided with a metal piece that can trigger the proximity switch; or, the detection switch 52 can be a photoelectric switch, that is, the detection switch 52 includes a photoelectric transmitter provided on one of the trigger 51 and the arm cylinder 1 and a photoelectric receiver provided on the other. When the cage 3 is in the second state, the photoelectric transmitter and the photoelectric receiver are opposite each other, so that the photoelectric receiver can receive the photoelectric signal emitted by the photoelectric transmitter and control the drive assembly 4.

[0072] This application does not specify the exact manner in which the trigger element 51 follows the rotation of the transmission shaft 41. Preferably, refer to... Figure 4 , Figure 6 , Figure 7 and Figure 13 The drive shaft 41 is provided with a drive gear 411, and the trigger 51 includes a driven gear 513 that meshes and is connected to the drive gear 411. The diameter of the driven gear 513 is larger than the diameter of the drive gear 411.

[0073] It is understandable that the driving gear 411 is coaxial with the transmission shaft 41, and the central axis of the driven gear 513 is collinear with the rotation axis of the trigger 51.

[0074] Since the drive shaft 41 is equipped with a drive gear 411, and the trigger 51 includes a driven gear 513 that meshes and drives the drive gear 411, and the diameter of the driven gear 513 is larger than the diameter of the drive gear 411, the drive connection between the trigger 51 and the drive shaft 41 is realized, so that the trigger 51 rotates with the drive shaft 41. At the same time, the stability of the drive connection between the trigger 51 and the drive shaft 41 is ensured and the assembly difficulty of the blood pressure measuring arm cylinder device is reduced. Furthermore, since the diameter of the driven gear 513 is larger than the diameter of the drive gear 411, the rotational speed of the trigger 51 is less than the rotational speed of the drive shaft 41.

[0075] This application does not specifically limit the formation method of the drive gear 411. Preferably, the drive gear 411 and the transmission shaft 41 are integrally formed. This increases the connection stability between the drive gear 411 and the transmission shaft 41 and reduces the number of parts required to assemble the blood pressure measuring arm sleeve device, thereby improving the assembly efficiency of the blood pressure measuring arm sleeve device. In other embodiments, the drive gear 411 may also be formed as a gear fixedly connected to the transmission shaft 41.

[0076] The better one is to refer to Figure 6 and Figure 7 The driven gear 513 is fixedly connected to the second follower block 512. That is, the second follower block 512 is located between the first follower block 511 and the driven gear 513, so as to facilitate the production of the trigger 51, reduce the production difficulty of the trigger 51, and thus reduce the production and manufacturing cost of the trigger 51.

[0077] In other embodiments, the trigger 51 can also rotate with the drive shaft 41 via pulleys and belt drive. That is, both the trigger 51 and the drive shaft 41 are coaxially provided with pulleys, the two pulleys are connected by belt drive, and the diameter of the pulley on the trigger 51 is larger than the diameter of the pulley on the drive shaft 41.

[0078] This application does not specifically limit the structure of the driver component 4; preferably, refer to... Figure 8 and Figure 9 The drive assembly 4 includes a synchronous pulley 42 disposed on the drive shaft 41 and a synchronous belt 43 meshing and drivingly connected to the synchronous pulley 42. The synchronous belt 43 is located outside the cage 3 and is fixedly connected to the cage 3. The diameter of the synchronous pulley 42 is larger than the diameter of the drive gear 411.

[0079] It is understandable that the synchronous pulley 42 is coaxially arranged with the drive shaft 41, and the synchronous pulley 42 is fixedly connected to the drive shaft 41.

[0080] Since the drive assembly 4 includes a synchronous pulley 42 located on the transmission shaft 41 and a synchronous belt 43 meshing and driving with the synchronous pulley 42, and the synchronous belt 43 is fixedly connected to the cage 3, the cage 3 can be driven by driving the synchronous pulley 42 to rotate, so as to realize the movement of the cage 3 between the first state and the second state. On the other hand, the driving efficiency of the drive assembly 4 on the cage 3 is guaranteed.

[0081] Furthermore, since the timing belt 43 is located on the outside of the retainer 3, when the user inserts their arm into the arm tube 1, the timing belt 43 and the user's arm are isolated by the airbag assembly 2 and the retainer 3, thereby improving the user's comfort when measuring blood pressure and thus enhancing the user experience.

[0082] Furthermore, since the diameter of the synchronizing pulley 42 is larger than that of the driving gear 411, the number of rotations required for the transmission shaft 41 when the cage 3 moves from the first state to the second state can be reduced, thereby reducing the number of rotations of the driving gear 411 and thus reducing the rotation angle of the trigger 51, so as to ensure the applicability of the tunnel blood pressure monitor.

[0083] Furthermore, refer to Figure 9 The timing pulley 42 is located between the timing belt 43 and the retainer 3. The blood pressure measuring arm cylinder device also includes a cover 12 located on the arm cylinder 1. The cover 12 is rotatably connected to a clamping wheel 121, which is located on the side of the timing belt 43 away from the timing pulley 42.

[0084] It is understood that the cover 12 is fixedly connected to the boom 1, the timing belt 43 passes through the gap between the timing pulley 42 and the timing belt 43, and the abutting wheel 121 contacts the side of the timing belt 43 away from the timing pulley 42.

[0085] Since the tensioning wheel 121 is located on the side of the synchronous belt 43 away from the synchronous pulley 42, the tensioning wheel 121 can be used to guide and limit the synchronous belt 43 so that the synchronous belt 43 always maintains a meshing state with the synchronous pulley 42. This ensures the driving efficiency of the drive assembly 4 to the cage 3 on the one hand, and increases the connection stability between the synchronous pulley 42 and the synchronous belt 43 on the other hand.

[0086] Furthermore, since the clamping wheel 121 is rotatably connected to the cover 12, the stability of the clamping wheel 121 is increased on the one hand to ensure the guiding and limiting effect of the clamping wheel 121 on the synchronous belt 43, and on the other hand, the assembly difficulty of the clamping wheel 121 is reduced to improve the assembly efficiency of the blood pressure measuring arm cylinder device.

[0087] The better one is to refer to Figure 9 There are two tensioning wheels 121, which are located on opposite sides of the timing belt 43 to further increase the connection stability between the timing belt 43 and the timing wheel 42, thereby further ensuring the driving efficiency of the drive assembly 4 to the cage 3.

[0088] Of course, in other embodiments, the timing pulley 42 may be positioned on the side of the timing belt 43 away from the retainer 3, so that the teeth of the timing belt 43 are located on the side of the timing belt 43 away from the retainer 3.

[0089] Furthermore, refer to Figure 9 , Figure 12 and Figure 13 The transmission shaft 41 is fitted with a bearing 412, and the cover 12 is provided with a receiving groove 122 for accommodating the bearing 412. The receiving groove 122 has a stop wall 123 located at the end of the bearing 412.

[0090] It is understandable that after the cover 12 is fixedly installed on the boom 1, the cover 12 can apply a squeezing force to the bearing 412 in the direction of the boom 1, so as to install the drive shaft 41 on the boom 1 using the cover 12 and the bearing 412, and the end of the bearing 412 can stop and cooperate with the stop wall 123.

[0091] Since the drive shaft 41 is fitted with a bearing 412, and the cover 12 is provided with a receiving groove 122 for accommodating the bearing 412, the friction between the drive shaft 41 and the arm cylinder 1 can be reduced, thereby reducing the rotational resistance of the drive shaft 41 and thus reducing the load on the drive assembly 4. At the same time, the noise generated by the blood pressure measuring arm cylinder device during operation can also be reduced. On the other hand, the drive shaft 41 can be fixed to the arm cylinder 1 by pressing the outer ring of the bearing 412 with the cover 12, thereby reducing the difficulty of installing the drive shaft 41 and improving the assembly efficiency of the blood pressure measuring arm cylinder device.

[0092] Furthermore, since the receiving groove 122 has a stop wall 123 located at the end of the bearing 412, the stop wall 123 can be used to limit the bearing 412, thereby increasing the stability of the bearing 412 and ensuring the stability of the blood pressure measuring arm device.

[0093] The better one is to refer to Figure 5 The boom 1 is provided with a shaft bracket 13, part of the bearing 412 is located in the shaft bracket 13, and the remaining part of the bearing 412 is located in the receiving groove 122 to increase the stability of the drive shaft 41.

[0094] Furthermore, the drive assembly 4 also includes a self-locking geared motor 44, the output shaft of which is fixedly connected to the transmission shaft 41 via a coupling to ensure the stability of the airbag assembly 2 when it is strapped to the user's arm.

[0095] The better one is to refer to Figure 11 The boom 1 is fixedly connected to a fixed frame 14, and the self-locking reduction motor 44 is fixedly connected to the fixed frame 14 to facilitate the installation of the self-locking reduction motor 44.

[0096] This application does not specify the method of fixing the timing belt 43 to the boom 1 or the structure of the cage 3. Preferably, refer to Figure 10 The blood pressure measuring arm tube device also includes a support 6 disposed on the arm tube 1, a timing belt 43 having a first end fixedly connected to the support 6 and a second end opposite to the first end, a retainer 3 including a wrapping layer 31, the wrapping layer 31 having a winding section 311 and a support section 312, the end of the winding section 311 near the support section 312 being fixedly connected to the support 6, the end of the winding section 311 away from the support section 312 being fixedly connected to the second end, and one end of the bushing being sleeved on the outside of the support section 312.

[0097] It should be noted that the above-mentioned "synchronous belt 43 has a first end fixedly connected to the bracket 6 and a second end opposite to the first end" refers to the time when the synchronous belt 43 is not installed to the boom 1 and the synchronous belt 43 is in a straight state, and the two ends of the synchronous belt 43 respectively constitute the first end and the second end; while the above-mentioned "the end of the winding section 311 away from the support section 312 is fixedly connected to the second end" refers to the time when the wrapping layer 31 is installed on the boom 1 and the wrapping layer 31 is in a straight state, and the end of the winding section 311 away from the support section 312.

[0098] Since the end of the winding section 311 near the support section 312 is fixedly connected to the bracket 6, and one end of the bushing is sleeved on the outside of the support section 312, the support section 312 can be used to support the airbag assembly 2, so that when the retainer 3 moves between the first state and the second state, one end of the airbag assembly 2 will not move relative to the support section 312, thereby ensuring the airbag assembly 2 wraps around the user's arm and ensuring the accuracy of blood measurement.

[0099] Furthermore, since the end of the take-up section 311 that is away from the support section 312 is fixedly connected to the second end, the cage 3 can move with the synchronous belt 43 by utilizing the end of the take-up section 311 that is away from the support section 312 to move with the synchronous belt 43.

[0100] Since the first end of the timing belt 43 is fixedly connected to the timing belt 43, the bracket 6 can be used to fix the first end of the timing belt 43 so that when the timing pulley 42 and the timing belt 43 rotate relative to each other, the timing belt 43 can drive the cage 3, so as to ensure the driving efficiency of the drive assembly 4 on the cage 3.

[0101] This application does not specifically limit the structure of the support 6; preferably, refer to... Figure 10 The support 6 includes a C-shaped frame 61 and a fixing plate 62 fixedly connected to the C-shaped frame 61. Both ends of the C-shaped frame 61 are fixedly connected to the boom cylinder 1. The end of the winding section 311 near the support section 312 is located between the C-shaped frame 61 and the fixing plate 62, so that the winding section 311 near the support section 312 is fixed by the mutual compression of the C-shaped frame 61 and the fixing plate 62. The first end of the synchronous belt 43 is located between the C-shaped plate and the fixing plate 62, so that the synchronous belt 43 is fixedly connected to the support 6 by the mutual compression of the C-shaped plate and the fixing plate 62.

[0102] Preferably, the C-frame 61 is provided with a hole structure that matches the teeth on the synchronous belt 43. The part of the synchronous belt 43 that overlaps with the C-frame 61 passes through the wrapping layer 31, so that some teeth on the synchronous belt 43 are located in the hole structure. The synchronous belt 43 is limited by the cooperation between the teeth and the hole structure, thereby increasing the connection stability between the synchronous belt 43 and the bracket 6.

[0103] In other implementation examples, the support 6 can also be a frame structure located on the boom 1, and the retainer 3 and the timing belt 43 are both connected to the support 6 by means of screws.

[0104] Furthermore, refer to Figures 8 to 10 The retainer 3 also includes a tension layer 32, one end of which is fixedly connected to the second end, and the other end of which is fixedly connected to the airbag assembly 2.

[0105] It is understandable that when the airbag assembly 2 is not installed on the arm cylinder 1 and the airbag assembly 2 is in a straight state, the airbag assembly 2 has a fixed end and a free end opposite to the fixed end. The fixed end is sleeved on the outside of the support section 312, and the tension layer 32 is fixedly connected to the free end of the airbag assembly 2, and the tension layer 32 is located inside the wrapping layer 31.

[0106] Since one end of the tension layer 32 is fixedly connected to the second end and the other end of the tension layer 32 is fixedly connected to the airbag assembly 2, when the drive assembly 4 drives the retainer 3 to move from the first state to the second state, the tension layer 32 can apply a pulling force to the airbag assembly 2 under the driving action of the synchronous belt 43, so that the airbag assembly 2 wraps around the user's arm, thereby ensuring the wrapping effect of the airbag assembly 2 on the user's arm. When the drive assembly 4 drives the retainer 3 to move from the second state to the first state, it can also use the tension layer 32 to push the airbag assembly 2, so that the diameter of the airbag assembly 2 gradually increases, so as to facilitate the user to put their arm into the central hole, thereby improving the user's experience.

[0107] This application does not specify the fixed connection method between the timing belt 43, the wrapping layer 31, and the tension layer 32. Preferably, refer to Figure 8 The blood pressure measuring arm device also includes clips 321. Two clips 321 are arranged opposite each other, located on both sides of the synchronization belt 43, the wrapping layer 31, and the tension layer 32, respectively. The two clips 321 are fixedly connected together by bolts, so as to apply compressive force to the synchronization belt 43, the wrapping layer 31, and the tension layer 32 to fix the three together. In other embodiments, the three can also be fixed together by adhesive.

[0108] This application does not specify the fixed connection method between the tension layer 32 and the airbag assembly 2. The two can be fixedly connected by snap fasteners, by sewing, or even by other fixed methods.

[0109] In other embodiments, the design of the bracket 6 and the tension layer 32 can be omitted, and the retainer 3 and the timing belt 43 can be directly fixed to the boom 1 using screws.

[0110] In other embodiments, the drive assembly 4 includes a self-locking geared motor 44 and a winding rope. The output shaft of the self-locking geared motor 44 is fixedly connected to the drive shaft 41. The winding rope is located outside the retainer 3, and one end of the winding rope is fixedly connected to the boom cylinder 1, while the other end of the winding rope is fixedly connected to the drive shaft 41. This allows the retainer 3 to move from a first state to a second state by winding the winding rope using the drive shaft 41.

[0111] This application does not specifically limit the structure of the arm tube 1. Preferably, the arm tube 1 includes an inner shell and an outer shell disposed outside the inner shell. The inner shell is hollow to form a central hole. The support 6 is located inside the inner shell. The drive assembly 4 and the detection assembly 5 are both disposed between the inner shell and the outer shell so that the drive assembly 4 and the detection assembly 5 avoid the central hole, thereby ensuring the user's comfort when measuring blood pressure.

[0112] Furthermore, the blood pressure measuring arm 1 also includes a cylindrical elastic cloth, which is located inside the airbag assembly 2, with its two ends located between the inner shell and the outer shell, respectively, so as to fix the elastic cloth by the mutual compression of the inner shell and the outer shell.

[0113] After the user inserts their arm into the central hole, the airbag assembly 2 contacts the user's arm through the elastic cloth to improve the user experience. When the retainer 3 moves from the first state to the second state, the elastic cloth undergoes elastic deformation under the action of the retainer 3 and the airbag assembly 2. When the retainer 3 moves from the second state to the first state, it can utilize the force of the elastic cloth to recover its deformation, causing the diameter of the airbag assembly 2 and the retainer 3 to gradually increase. Thus, the airbag assembly 2 and the retainer 3 can not only use their own elastic force to gradually increase their diameter, but also use the elastic force of the elastic cloth to achieve the effect of making it easier for the user to pull their arm out of the central hole.

[0114] This application also discloses a tunnel-type blood pressure monitor, which includes a main unit and a blood pressure measuring arm as described above.

[0115] Understandably, the main unit has an air pump capable of inflating the airbag of the airbag assembly 2, and its main unit has a measurement module for measuring blood pressure.

[0116] Since the tunnel-type blood pressure monitor in this application uses the aforementioned blood pressure measuring arm device, the trigger 51 can be used to trigger the detection switch 52 to control the drive component 4 to stop moving, so as to avoid the drive component 4 from being short-circuited due to abnormal increase in current, thereby ensuring the service life of the tunnel-type blood pressure monitor.

[0117] This application does not provide a detailed description of the host's structure; however, existing technologies can be consulted for details.

[0118] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0119] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0120] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A blood pressure measuring armhole device, characterized in that, include: Arm tube (1), the interior of which has a central hole through which the arm passes; Airbag assembly (2), the airbag assembly (2) is located in the central hole and extends circumferentially along the central hole, the airbag assembly (2) includes an air bag and a bushing fitted over the air bag; A retainer (3) is located in the central hole and outside the airbag assembly (2). The retainer (3) is capable of being rolled up to have a first state and a second state. The diameter of the retainer (3) in the first state is greater than the diameter of the retainer (3) in the second state. A drive assembly (4) is disposed on the arm cylinder (1) and is used to drive the cage (3) to move between the first state and the second state. The drive assembly (4) has a drive shaft (41). The detection component (5) includes a trigger (51) rotatably connected to the boom (1) and a detection switch (52) disposed on the boom (1). The trigger (51) can rotate with the drive shaft (41), and the rotation speed of the trigger (51) is less than the rotation speed of the drive shaft (41). When the retainer (3) is in the second state, the trigger (51) can trigger the detection switch (52).

2. The blood pressure measuring armhole device according to claim 1, characterized in that, The detection switch (52) includes a first limit switch (521), the first limit switch (521) has a first swing arm (523), the trigger (51) has a first pressing part that can contact and cooperate with the first swing arm (523), when the retainer (3) moves to the second state, the first swing arm (523) moves in the direction away from the first pressing part under the action of the first pressing part, so that the contact system of the first limit switch (521) switches to the normally closed state.

3. The blood pressure measuring armhole device according to claim 2, characterized in that, The detection switch (52) further includes a second limit switch (522), the second limit switch (522) having a second swing arm (524), the trigger (51) having a second pressing part that can contact and cooperate with the second swing arm (524), when the retainer (3) moves to the second state or any state between the first state and the second state, the second swing arm (524) moves in the direction away from the second pressing part under the action of the second pressing part, so that the contact system of the second limit switch (522) switches to the normally closed state.

4. The blood pressure measuring armhole device according to claim 3, characterized in that, The trigger (51) includes a first follower block (511). The outer peripheral surface of the first follower block (511) has a first arc-shaped surface (514), a second arc-shaped surface (515), and a transition surface (516) located between the first arc-shaped surface (514) and the second arc-shaped surface (515). The centers of the first arc-shaped surface (514) and the second arc-shaped surface (515) are both located on the rotation axis of the trigger (51). The radius of the first arc-shaped surface (514) is greater than the radius of the second arc-shaped surface (515), and the first arc-shaped surface (514) constitutes the first extrusion part. And / or, the trigger (51) includes a second follower block (512), the outer peripheral surface of the second follower block (512) has a third arc-shaped surface (517) and a clearance surface (518), the center of the third arc-shaped surface (517) is located on the rotation axis of the trigger (51), the radius of the third arc-shaped surface (517) is greater than the distance from any point on the clearance surface (518) to the rotation axis of the trigger (51), and the third arc-shaped surface (517) constitutes the second extrusion part.

5. A blood pressure measuring arm sleeve device according to claim 3, characterized in that, The detection component (5) further includes a partition plate (53) located between the first limit switch (521) and the second limit switch (522).

6. A blood pressure measuring arm sleeve device according to any one of claims 1-5, characterized in that, The drive shaft (41) is provided with a drive gear (411), and the trigger (51) includes a driven gear (513) that meshes and drives the drive gear (411). The diameter of the driven gear (513) is larger than the diameter of the drive gear (411).

7. A blood pressure measuring arm sleeve device according to claim 6, characterized in that, The drive assembly (4) includes a synchronous pulley (42) disposed on the drive shaft (41) and a synchronous belt (43) meshing and drivingly connected to the synchronous pulley (42). The synchronous belt (43) is located outside the cage (3) and is fixedly connected to the cage (3). The diameter of the synchronous pulley (42) is larger than the diameter of the drive gear (411).

8. A blood pressure measuring arm sleeve device according to claim 7, characterized in that, The synchronous pulley (42) is located between the synchronous belt (43) and the retainer (3). The blood pressure measuring arm tube device also includes a cover (12) disposed on the arm tube (1). A clamping wheel (121) is rotatably connected inside the cover (12). The clamping wheel (121) is located on the side of the synchronous belt (43) away from the synchronous pulley (42).

9. A blood pressure measuring arm sleeve device according to claim 8, characterized in that, The drive shaft (41) is fitted with a bearing (412) on its outside. The cover (12) is provided with a receiving groove (122) for accommodating the bearing (412). The receiving groove (122) has a stop wall (123) located at the end of the bearing (412).

10. A blood pressure measuring arm sleeve device according to claim 7, characterized in that, The blood pressure measuring arm tube device also includes a bracket (6) disposed on the arm tube (1), the synchronous belt (43) has a first end fixedly connected to the bracket (6) and a second end opposite to the first end, the retainer (3) includes a wrapping layer (31), the wrapping layer (31) has a winding section (311) and a support section (312), the end of the winding section (311) near the support section (312) is fixedly connected to the bracket (6), the end of the winding section (311) away from the support section (312) is fixedly connected to the second end, and one end of the bushing is sleeved on the outside of the support section (312).

11. A blood pressure measuring arm sleeve device according to claim 10, characterized in that, The retainer (3) further includes a tension layer (32), one end of which is fixedly connected to the second end, and the other end of which is fixedly connected to the airbag assembly (2).

12. A tunnel-type blood pressure monitor, characterized in that, It includes a main unit and a blood pressure measuring arm device as described in any one of claims 1-11 above.

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