Rotary switch assembly and blood pressure measuring device

Abstract

The application relates to a rotary switch assembly for a blood pressure measuring device, the blood pressure measuring device comprising a base and an arm barrel arranged on the base, the rotary switch assembly comprising: a rotating shaft, the arm barrel being rotatably connected to the base through the rotating shaft; a pressing rod, the pressing rod being rotatably arranged on the base, the pressing rod being located in a rotating track of the rotating shaft and being capable of moving under the pushing of the rotating shaft; and a trigger switch, the trigger switch comprising a switch seat and a trigger spring plate arranged on the switch seat, the trigger spring plate being located in a moving track of the pressing rod, the trigger spring plate being capable of controlling the connection and disconnection of the trigger switch under the pushing of the pressing rod. The rotary switch assembly provided by the application sets the pressing rod between the rotating shaft and the trigger switch, so that the pressing rod can bear part of the pushing force of the rotating shaft, especially the circumferential pushing force of the rotating shaft, and the trigger switch can be switched only under the pressure of the pressing rod, thereby reducing the risk of damage of the trigger switch caused by the circumferential pushing force of the rotating shaft and improving the working reliability of the trigger switch.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a rotary switch assembly and a blood pressure measuring device. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] As a type of circuit switch, tactile switches have the advantages of being highly responsive and able to sense slight forces. Tactile switches are commonly used in electronic devices to control the switching of electronic devices by sensing slight triggering forces.

[0004] Taking the application of tactile switches in electronic blood pressure monitors as an example, when the arm of the electronic blood pressure monitor rotates to the measurement position, the arm triggers the tactile switch at that position, thereby turning on the electronic blood pressure monitor and entering the blood pressure measurement state. However, in the actual use of tactile switches, the rotating pushing force of the arm applies both lateral force and pressing force to the tactile switch simultaneously. The lateral force is ineffective for the switching action of the tactile switch and will accelerate the wear and damage of the tactile switch. Utility Model Content

[0005] The purpose of this application is to at least solve the technical problem that the circumferential rotational force of existing electronic devices easily damages tactile switches, and this purpose is achieved through the following technical solution:

[0006] The first aspect of this application provides a rotary switch assembly for a blood pressure measuring device. The blood pressure measuring device includes a base and an arm barrel disposed on the base. The rotary switch assembly includes: a rotating shaft, the arm barrel being rotatably connected to the base via the rotating shaft; a pressure rod, the pressure rod being rotatably disposed on the base, the pressure rod being located on the rotation trajectory of the rotating shaft and being movable under the push of the rotating shaft; and a trigger switch, the trigger switch including a switch base and a trigger spring disposed on the switch base, the trigger spring being located on the movement trajectory of the pressure rod, the trigger spring being able to control the connection and disconnection of the trigger switch under the push of the pressure rod.

[0007] Those skilled in the art will understand that the rotary switch assembly proposed in this application provides a pressure rod between the rotating shaft and the trigger switch, thereby enabling the pressure rod to bear part of the thrust of the rotating shaft, especially the circumferential thrust applied by the rotating shaft. This allows the trigger switch to switch only under the pressure of the pressure rod, thereby reducing the risk of the trigger switch being damaged by the circumferential thrust of the rotating shaft and improving the working reliability of the trigger switch.

[0008] Specifically, the arm tube of the blood pressure measuring device is connected to the base via a rotating shaft. During the opening process of the arm tube, the arm tube drives the rotating shaft to rotate synchronously. When the arm tube is fully open, the rotating shaft presses against the pressure rod. After bearing the pressure of the rotating shaft, the pressure rod presses down on the trigger switch, which then connects the internal circuit of the blood pressure measuring device and turns on the device. Conversely, during the closing process of the arm tube, the arm tube drives the rotating shaft to rotate in the opposite direction. When the arm tube is fully closed, the pressure rod and the trigger switch return to their original state after losing the pressure of the rotating shaft. The internal circuit of the blood pressure measuring device is then disconnected, and the device is turned off.

[0009] In some embodiments, the shaft end of the rotating shaft is provided with a first protrusion, and the pressure rod is provided with a second protrusion that cooperates with the first protrusion. The rotating shaft pushes the second protrusion through the first protrusion to make the pressure rod rotate.

[0010] In some embodiments, the shaft end extends out of the arm barrel, and the shaft end is provided with an annular retaining edge distributed circumferentially along the shaft, and the first protrusion is configured as an annular protrusion surrounding a portion of the annular retaining edge.

[0011] In some embodiments, the annular flange is provided with a notch, the base is provided with a limiting structure that cooperates with both sides of the notch, and the rotating shaft is configured to rotate within the range of the notch and the rotational stroke of the rotating shaft is constrained by the limiting structure.

[0012] In some embodiments, the second protrusion is configured as an arcuate protrusion extending in the direction of the first protrusion, and the side of the arcuate protrusion is configured as a guide slope that can cooperate with the first protrusion.

[0013] In some embodiments, the lever is configured as a bent structure and is bent toward the trigger switch, with a second protrusion disposed on the side of the lever opposite to the trigger switch.

[0014] In some embodiments, the rotating shaft, the pressure rod, and the trigger switch are distributed sequentially along the axial direction of the rotating shaft, and the pressure rod and the trigger switch are both located on the outer side of the shaft end.

[0015] In some embodiments, the pressure rod is connected to the base via an elastic reset member, so that when the rotating shaft disengages from the pressure rod, the pressure rod can be restored to a state of separation from the switch base under the action of the elastic reset member.

[0016] In some embodiments, the rotary switch assembly further includes a housing, a trigger switch disposed inside the housing, and a lever configured to move between the inside and outside of the housing.

[0017] The second aspect of this application provides a blood pressure measuring device, including the rotary switch assembly of the first aspect of this application. The blood pressure measuring device includes a base and an arm barrel rotatably disposed on the base. The base is provided with a main unit electrically connected to the arm barrel via the rotary switch assembly. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a blood pressure measuring device according to an embodiment of this application;

[0020] Figure 2 for Figure 1 A schematic diagram showing the disassembled structure of the rotary switch assembly in the blood pressure measuring device shown.

[0021] Figure 3 for Figure 1 A top view of the rotary switch assembly in the off state;

[0022] Figure 4 for Figure 3 A top view of the rotary switch assembly in the open position;

[0023] Figure 5 for Figure 4 A partial structural schematic diagram of the rotary switch assembly shown;

[0024] Figure 6 This is a schematic diagram of the blood pressure measuring device in the open state according to an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the blood pressure measuring device in the locked state according to an embodiment of this application.

[0026] The accompanying figure is labeled as follows:

[0027] 100. Blood pressure measuring device;

[0028] 10. Base; 11. Limiting structure;

[0029] 20. Arm-mounted bucket;

[0030] 30. Rotary switch assembly; 31. Rotating shaft; 310. Shaft end; 301. Annular flange; 302. Notch; 311. First protrusion; 3111. Annular protrusion; 32. Pressure rod; 320. Elastic reset element; 321. Second protrusion; 3211. Arc-shaped protrusion; 3212. Guide slope; 33. Trigger switch; 331. Trigger spring; 332. Switch base; 34. Cover. Detailed Implementation

[0031] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that the rotary switch assembly described in this application using a blood pressure measuring device is merely a preferred embodiment and is not intended to limit the application scope of the rotary switch assembly. For example, the rotary switch assembly of this application can also be used in other electronic devices such as a mouse, and such adjustments do not depart from the protection scope of the rotary switch assembly of this application.

[0032] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” and “having” are inclusive and therefore indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0033] Although terms such as "first," "second," etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Furthermore, in the description of this application, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "end," "length," "inner," "outer," etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation, in addition to those depicted in the figure. For example, if the mechanism in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0035] The tactile switch of an electronic blood pressure monitor typically works in conjunction with the rotating shaft of the armhole. When the armhole is opened or closed, it causes the shaft to rotate. When the shaft rotates to the blood pressure measurement position on the armhole, it touches the tactile switch, thus turning on the electronic blood pressure monitor. Because the rotating shaft applies both pressure and lateral force to the tactile switch during rotation, the switch is prone to damage from the lateral force after prolonged use.

[0036] To address the technical problem of existing tactile switches being damaged by lateral forces on the rotating shaft, the rotary switch assembly proposed in this application incorporates a pressure rod between the rotating shaft and the trigger switch. By distributing or converting the lateral force of the rotating shaft, the pressure rod improves the force exerted by the rotating shaft on the trigger switch, enhances the working stability of the trigger switch, and reduces the risk of damage to the trigger switch.

[0037] like Figures 1 to 5 As shown, this application embodiment provides a rotary switch assembly 30 for a blood pressure measuring device 100. The blood pressure measuring device 100 includes a base 10 and an arm barrel 20 disposed on the base 10. The rotary switch assembly 30 includes a rotating shaft 31, a pressure rod 32, and a trigger switch 33. The arm barrel 20 is rotatably connected to the base 10 via the rotating shaft 31. The pressure rod 32 is rotatably disposed on the base 10, located on the rotation trajectory of the rotating shaft 31, and can move under the push of the rotating shaft 31. The trigger switch 33 includes a switch base 332 and a trigger spring 331 disposed on the switch base 332, and the trigger spring 331 is located on the movement trajectory of the pressure rod 32. The trigger spring 331 can control the connection and disconnection of the trigger switch 33 under the push of the pressure rod 32.

[0038] In this embodiment, the rotary switch assembly 30 proposed in this application provides a pressure rod 32 between the rotating shaft 31 and the trigger switch 33, so that the pressure rod 32 can bear part of the thrust of the rotating shaft 31, especially the circumferential thrust applied by the rotating shaft 31, so that the trigger switch 33 can switch only under the pressure of the pressure rod 32, thereby reducing the risk of the circumferential thrust of the rotating shaft 31 damaging the trigger switch 33 and improving the working reliability of the trigger switch 33.

[0039] Specifically, the arm barrel 20 of the blood pressure measuring device 100 is connected to the base 10 via a rotating shaft 31. During the opening process of the arm barrel 20, the arm barrel 20 drives the rotating shaft 31 to rotate synchronously. When the arm barrel 20 is fully opened, the rotating shaft 31 presses against the pressure rod 32. After bearing the pressure of the rotating shaft 31, the pressure rod 32 presses down on the trigger switch 33. The trigger switch 33 then connects the internal circuit of the blood pressure measuring device 100 and turns on the blood pressure measuring device 100. Conversely, during the closing process of the arm barrel 20, the arm barrel 20 drives the rotating shaft 31 to rotate in the opposite direction. When the arm barrel 20 is fully closed, the pressure rod 32 and the trigger switch 33 return to their original state after losing the pressure of the rotating shaft 31. The internal circuit of the blood pressure measuring device 100 is disconnected and the blood pressure measuring device 100 is turned off.

[0040] like Figure 5 As shown, during the synchronous rotation of the rotating shaft 31 driven by the arm barrel 20, the circumferential rotational force generated by the rotating shaft 31 during rotation is decomposed into forces in the A direction and forces in the B direction. The A-direction force of the rotating shaft 31 has no actual effect on the pressing action of the trigger switch 33. In this embodiment, the A-direction force of the rotating shaft 31 can be counteracted by the C-point support structure of the pressure rod 32, thereby reducing friction and preventing damage to the trigger switch 33. The B-direction force of the rotating shaft 31 is the pressing force that actually affects the pressing action of the trigger switch 33. In this embodiment, the B-direction force can be transmitted to the trigger switch 33 through the pressure rod 32 to drive the trigger switch 33 to switch. Therefore, the trigger switch 33 only bears the vertical B-direction force during the entire force application process, thereby effectively improving the service life of the trigger switch 33.

[0041] It should be noted that the embodiments of this application do not limit the specific structure of the rotating shaft 31 and the pressure rod 32, because the inventive point of this application is to buffer and share the circumferential rotational force of the rotating shaft 31 through the pressure rod 32. As for the specific structure of the rotating shaft 31 and the pressure rod 32, it can be set according to the actual use. For example, the pressure rod 32 can be set as a sheet, column or bent structure, etc. These embodiments are all within the protection scope of the rotary switch assembly 30 of this application. As for other embodiments of the rotating shaft 31 and the pressure rod 32, they will not be described one by one here.

[0042] The specific structures of the rotating shaft 31 and the pressure rod 32 in the embodiments of this application will be described in detail below.

[0043] like Figures 1 to 7 As shown, in some embodiments, the shaft end 310 of the rotating shaft 31 is provided with a first protrusion 311, and the pressure rod 32 is provided with a second protrusion 321 that cooperates with the first protrusion 311. The rotating shaft 31 pushes the second protrusion 321 through the first protrusion 311 to make the pressure rod 32 rotate.

[0044] In this embodiment, the rotating shaft 31 and the pressure rod 32 achieve the purpose of triggering the switch 33 through the cooperation of the first protrusion 311 and the second protrusion 321. Specifically, when the rotating shaft 31 rotates to the state where the first protrusion 311 and the second protrusion 321 are in contact, the rotating shaft 31 can open the trigger switch 33 through the pressure rod 32; when the rotating shaft 31 rotates to the state where the first protrusion 311 and the second protrusion 321 are separated, the rotating shaft 31 separates from the pressure rod 32, thereby restoring the pressure rod 32 and the trigger switch 33 to their original state of being disconnected.

[0045] Specifically, by means of the cooperation between the rotating shaft 31 and the pressure rod 32 through the first protrusion 311 and the second protrusion 321, a safe distance can be maintained between the rotating shaft 31 and the pressure rod 32, so that the rotating shaft 31 can trigger the pressure rod 32 at a designated position, reducing the phenomenon of the rotating shaft 31 accidentally triggering the pressure rod 32 and the trigger switch 33 during rotation.

[0046] like Figures 1 to 5 As shown, in some embodiments, the shaft end of the rotating shaft 31 extends out of the arm barrel 20, and the shaft end 310 is provided with an annular flange 301 distributed circumferentially along the rotating shaft 31. The first protrusion 311 is configured as an annular protrusion 3111 surrounding the annular flange 301.

[0047] In this embodiment, by setting the first protrusion 311 as a ring-shaped protrusion 3111 extending circumferentially along the partial annular stop 301, the annular protrusion 3111 can, on the one hand, achieve the purpose of triggering the pressure rod 32 and opening the trigger switch 33 in advance, so that the blood pressure measuring device 100 can enter the measurement state in advance; on the other hand, the annular protrusion 3111 can increase the contact area with the trigger switch 33, improve the stability of the action of the annular protrusion 3111 on the trigger switch 33, and reduce the phenomenon of maloperation of the trigger switch 33 during slight shaking of the arm barrel 20.

[0048] Furthermore, the first protrusion 311 is located on the outer side of the rotating shaft 31. By setting the first protrusion 311 on the outer side of the rotating shaft 31, a safe distance can be maintained between the rotating shaft 31 and the pressure rod 32. This allows the rotating shaft 31 to trigger the pressure rod 32 at a designated position, reducing the phenomenon of the rotating shaft 31 accidentally triggering the pressure rod 32 and the trigger switch 33 during rotation.

[0049] like Figures 1 to 5 As shown, in some embodiments, the annular flange 301 is provided with a notch 302, the base 10 is provided with a limiting structure 11 that cooperates with both sides of the notch 302, and the rotating shaft 31 is configured to rotate within the range of the notch 302 and the rotation stroke of the rotating shaft 31 is constrained by the limiting structure 11.

[0050] In this embodiment, the notch 302 and the limiting structure 11 work together to limit the rotation range of the rotating shaft 31, thereby enabling the rotating shaft 31 to apply appropriate pressure to the pressure rod 32 and the trigger switch 33, reducing the phenomenon that excessive rotation range of the rotating shaft 31 will cause excessive pressure to the pressure rod 32 and the trigger switch 33, damaging the pressure rod 32 and the trigger switch 33.

[0051] Specifically, the base 10 has a semi-circular groove, the rotating shaft 31 is fitted into the semi-circular groove, and the two sides of the notch 302 are located at the upper and lower ends of the semi-circular groove. When the rotating shaft 31 rotates to the open state of the arm barrel 20, one side of the notch 302 presses against the end of the semi-circular groove, and the semi-circular groove keeps the arm barrel 20 in the open state; when the rotating shaft 31 rotates to the closed state of the arm barrel 20, the other side of the notch 302 presses against the end of the semi-circular groove, and the semi-circular groove keeps the arm barrel 20 in the closed state.

[0052] like Figures 1 to 5 As shown, in some embodiments, the second protrusion 321 is configured as an arcuate protrusion 3211 extending in the direction of the first protrusion 311, and the side of the arcuate protrusion 3211 is configured as a guide slope 3212 that can cooperate with the first protrusion 311.

[0053] In this embodiment, the guide slope 3212 can guide the rotation of the rotating shaft 31, reducing the jamming phenomenon that occurs during the interaction between the rotating shaft 31 and the pressure rod 32; the guide slope 3212 can also decompose the circumferential rotational force of the rotating shaft 31, thereby offsetting the lateral rotational force of the rotating shaft 31 and transmitting the pressing force of the rotating shaft 31 to the trigger switch 33.

[0054] Furthermore, the protrusions of the arc-shaped protrusions 3211 are distributed along the axial direction of the rotating shaft 31, thereby forming an axial gap between the rotating shaft 31 and the pressure rod 32. This axial gap forms a safe distance between the rotating shaft 31 and the pressure rod 32, reducing the phenomenon of the rotating shaft 31 accidentally triggering the pressure rod 32 during rotation.

[0055] like Figures 1 to 5 As shown, in some embodiments, the pressure rod 32 is configured as a bent structure, and the pressure rod 32 is configured to bend toward the trigger switch 33, and the second protrusion 321 is provided on the side of the pressure rod 32 opposite to the trigger switch 33.

[0056] In this embodiment, by setting the pressure rod 32 as a bent structure, the bent structure of the pressure rod 32 can not only guide the rotation of the rotating shaft 31 and reduce the jamming phenomenon during the interaction between the rotating shaft 31 and the pressure rod 32, but also decompose the circumferential rotational force of the rotating shaft 31, thereby offsetting the lateral rotational force of the decomposed circumferential rotational force and transmitting the pressing force of the decomposed circumferential rotational force to the trigger switch 33.

[0057] Specifically, the pressure rod 32 is set as a V-shaped structure with an obtuse inner angle. The trigger switch 33 is located within the V-shaped protection range of the V-shaped structure, which can also protect the trigger switch 33 and reduce the phenomenon of false triggering caused by interference between the trigger switch 33 and external components.

[0058] like Figures 1 to 5 As shown, in some embodiments, the rotating shaft 31, the pressure rod 32 and the trigger switch 33 are distributed sequentially along the axial direction of the rotating shaft 31, and the pressure rod 32 and the trigger switch 33 are both distributed on the outer side of the shaft end of the rotating shaft 31.

[0059] In this embodiment, by distributing the pressure rod 32 and the trigger switch 33 on the outer side of the shaft end of the rotating shaft 31, the rotating shaft 31 can transmit rotational force to the pressure rod 32 and the trigger switch 33. On the one hand, this achieves the purpose of gradually reducing the rotational force of the rotating shaft 31. On the other hand, it enables the rotating shaft 31, the pressure rod 32 and the trigger switch 33 to form a safe distance along the axial direction of the rotating shaft 31.

[0060] Furthermore, by distributing the pressure rod 32 and the trigger switch 33 on the outer side of the shaft end of the rotating shaft 31, the space on the outer side of the shaft end of the rotating shaft 31 can be rationally utilized, and the user can conveniently install and maintain the pressure rod 32 and the trigger switch 33.

[0061] like Figures 1 to 5 As shown, in some embodiments, the pressure rod 32 is connected to the base 10 via an elastic reset member 320. When the rotating shaft 31 is disengaged from the pressure rod 32, the pressure rod 32 can be restored to a state of separation from the switch base 332 under the action of the elastic reset member 320.

[0062] In this embodiment, the elastic reset member 320 includes a pin and a torsion spring sleeved on the pin. The pressure rod 32 is sleeved on the pin through the torsion spring. The pressure rod 32 can rotate to the position of triggering the trigger switch 33 through the pin under the pushing action of the rotating shaft 31, and can return to the state of releasing the trigger switch 33 under the elastic force of the torsion spring after the force of the pressure rod 32 disappears, thereby achieving the purpose of switching the trigger switch 33 on and off.

[0063] like Figure 1 and Figure 5As shown, in some embodiments, the rotary switch assembly 30 further includes a housing 34, a trigger switch 33 disposed inside the housing 34, and a lever 32 configured to move between the inside and outside of the housing 34.

[0064] In this embodiment, by placing the trigger switch 33 inside the housing 34, the housing 34 can protect the trigger switch 33, reduce the phenomenon of false triggering due to interference between the trigger switch 33 and external components, and reduce the phenomenon of corrosion of the trigger switch 33 by moisture and dust.

[0065] Furthermore, the cover 34 can also guide the rotation of the pressure rod 32, reducing the phenomenon that the pressure rod 32 deviates from its rotation trajectory during rotation.

[0066] like Figure 1 and Figure 7 As shown, the second aspect of this application provides a blood pressure measuring device 100, including the rotary switch assembly 30 of the first aspect of this application. The blood pressure measuring device 100 includes a base 10 and an arm barrel 20 rotatably disposed on the base 10. The base 10 is provided with a main unit electrically connected to the arm barrel 20 via the rotary switch assembly 30.

[0067] In this embodiment, as Figure 6 As shown, when the arm barrel 20 rotates to a position that forms a specific angle with the base 10, facilitating arm insertion (i.e., the pressure measurement position), the arm barrel 20 activates the main unit via the switch assembly. Figure 7 As shown, when the arm barrel 20 rotates to a position away from the pressure measurement position, the arm barrel 20 shuts off the main unit through the rotary switch assembly 30. The blood pressure measuring device 100 provided in this application embodiment has all the technical effects of the rotary switch assembly 30 provided in the first aspect embodiment of this application, and will not be described again here.

[0068] Furthermore, the embodiments of this application only focus on the structures of the rotary switch assembly 30 and the blood pressure measuring device 100 that are related to the improvements of this application, and do not mean that the rotary switch assembly 30 and the blood pressure measuring device 100 do not have other structures, which will not be described in detail here.

[0069] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of this application.

Claims

1. A rotary switch assembly for a blood pressure measuring device (100), the blood pressure measuring device (100) comprising a base (10) and an arm barrel (20) disposed on the base (10), characterized in that, The rotary switch assembly (30) includes: A pivot (31) is provided, through which the arm barrel (20) is rotatably connected to the base (10); A pressure rod (32) is rotatably disposed on the base (10). The pressure rod (32) is located on the rotation trajectory of the rotating shaft (31) and can move under the push of the rotating shaft (31). A trigger switch (33) is provided, comprising a switch base (332) and a trigger spring (331) disposed on the switch base (332). The trigger spring (331) is located on the movement trajectory of the pressure rod (32). The trigger spring (331) can control the connection and disconnection of the trigger switch (33) under the push of the pressure rod (32).

2. The rotary switch assembly of claim 1, wherein, The shaft (31) has a first protrusion (311) at its shaft end, and the pressure rod (32) has a second protrusion (321) that cooperates with the first protrusion (311). The shaft (31) pushes the second protrusion (321) through the first protrusion (311) to make the pressure rod (32) rotate.

3. The rotary switch assembly of claim 2, wherein, The shaft end (310) of the rotating shaft (31) extends out of the arm barrel (20), and the shaft end (310) is provided with an annular flange (301) distributed circumferentially along the rotating shaft (31). The first protrusion (311) is configured as an annular protrusion (3111) surrounding part of the annular flange (301).

4. The rotary switch assembly of claim 3, wherein, The annular retaining edge (301) is provided with a notch (302), the base (10) is provided with a limiting structure (11) that cooperates with both sides of the notch (302), and the rotating shaft (31) is configured to rotate within the range of the notch (302) and the rotation stroke of the rotating shaft (31) is constrained by the limiting structure (11).

5. The rotary switch assembly of claim 2, wherein, The second protrusion (321) is configured as an arcuate protrusion (3211) extending in the direction of the first protrusion (311), and the side of the arcuate protrusion (3211) is configured as a guide slope (3212) that can cooperate with the first protrusion (311).

6. The rotary switch assembly of claim 2, wherein, The pressure rod (32) is configured as a bent structure, and the pressure rod (32) is configured to bend toward the trigger switch (33), and the second protrusion (321) is provided on the side of the pressure rod (32) opposite to the trigger switch (33).

7. The rotary switch assembly of claim 1, wherein, The rotating shaft (31), the pressure rod (32) and the trigger switch (33) are distributed sequentially along the axial direction of the rotating shaft (31), and the pressure rod (32) and the trigger switch (33) are both distributed on the outer side of the shaft end of the rotating shaft (31).

8. The rotary switch assembly of claim 1, wherein, The pressure rod (32) is connected to the base (10) via an elastic reset member (320). When the rotating shaft (31) is disengaged from the pressure rod (32), the pressure rod (32) can be restored to a state of separation from the switch base (332) under the action of the elastic reset member (320).

9. The rotary switch assembly (30) according to any one of claims 1 to 8, characterized in that The rotary switch assembly (30) also includes a housing (34), the trigger switch (33) is disposed inside the housing (34), and the pressure rod (32) is configured to move between the inside and outside of the housing (34).

10. A blood pressure measuring device, characterized by, Includes the rotary switch assembly (30) as described in any one of claims 1-9; The blood pressure measuring device (100) includes a base (10) and an arm barrel (20) rotatably disposed on the base (10). The base (10) is provided with a main unit electrically connected to the arm barrel (20) via the rotary switch assembly (30).

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