Modular arm sleeve

Abstract

The application relates to a modular arm cylinder, which comprises a support and a retractable arm cylinder. The support comprises a plurality of assembly seats which are sequentially and detachably connected in a head-to-tail mode to form a cylindrical structure with a mounting cavity. The retractable arm cylinder comprises a variable-diameter ring and a tooth belt. The variable-diameter ring is circumferentially arranged in the mounting cavity and is arranged in close contact with the cavity wall. One end of the tooth belt is arranged on the side of the support away from the mounting cavity, and the other end of the tooth belt is arranged through the support and connected with the variable-diameter ring. In the utility model, the assembly seats bear and install the retractable arm cylinder. The size of the mounting cavity formed by the mutual connection of the assembly seats can be adjusted by adjusting the size of the assembly seats. Since the support is sequentially and detachably connected in a head-to-tail mode by the plurality of assembly seats, the support can be quickly disassembled, the internal structure of the sphygmomanometer can be simplified, and the production cost of the sphygmomanometer is reduced.

Description

Technical Field

[0001] This application relates to the field of blood pressure monitor technology, and more particularly to a modular arm cuff. Background Technology

[0002] A blood pressure monitor is a medical device used to measure blood pressure. Common types include manual blood pressure monitors and automatic electronic blood pressure monitors. These monitors determine a person's blood pressure value by measuring the pressure of blood flowing in the arteries, usually measured in millimeters of mercury.

[0003] Common automatic electronic blood pressure monitors include tunnel type and cuff type. Tunnel type blood pressure monitors are generally fixed. The user puts their arm through the armhole of the blood pressure monitor for measurement. This type of blood pressure monitor automatically inflates and releases the cuff, calculates the blood pressure value, and displays the blood pressure value in digital form on the screen after the measurement, including systolic blood pressure, diastolic blood pressure, and pulse rate. In related technologies, tunnel type blood pressure monitors have complex parts and cannot be quickly disassembled and assembled, resulting in high production costs. Utility Model Content

[0004] This application provides a modular boom to solve the problem of not being able to quickly assemble and disassemble.

[0005] In a first aspect, this application provides a modular boom, comprising:

[0006] The bracket includes multiple mounting bases, which are detachably connected end to end to form a cylindrical structure with mounting cavities.

[0007] The retractable boom includes a variable diameter ring and a toothed belt; the variable diameter ring is circumferentially located inside the mounting cavity and fits snugly against the cavity wall; one end of the toothed belt is located on the side of the bracket away from the mounting cavity, and the other end passes through the bracket and connects to the variable diameter ring.

[0008] Furthermore, there are two or three assembly bases, which are connected to each other to form a cylindrical structure.

[0009] Furthermore, the assembly bases are a first assembly base, a second assembly base, and a third assembly base. The cross-sections of the first assembly base, the second assembly base, and the third assembly base are all arc-shaped. The two ends of the first assembly base, the two ends of the second assembly base, and the two ends of the third assembly base are respectively provided with a first snap-fit ​​part and a second snap-fit ​​part. The first assembly base, the second assembly base, and the third assembly base are connected end to end through the first snap-fit ​​part and the second snap-fit ​​part to form a cylindrical structure.

[0010] Furthermore, the first snap-fit ​​portion has a resilient plug, and the second snap-fit ​​portion has a mounting hole, with the resilient plug matching the mounting hole.

[0011] Furthermore, the bracket is provided with a mounting part, an abutment boss, a notch, and a first limiting member; the mounting part is located on the side of the bracket away from the mounting cavity; the abutment boss is located on the side of the bracket away from the mounting cavity, and the toothed belt passes through the abutment boss at the end away from the variable diameter ring, and the height of the abutment boss is the same as the thickness of the toothed belt; the notch is located on the bracket, and the toothed belt extends into the mounting cavity through the notch and connects with the variable diameter ring; the first limiting member is located on one side of the notch, and the height of the first limiting member is flush with the top surface of the notch.

[0012] Furthermore, a limiting groove is provided inside the mounting cavity, which is arranged circumferentially along the wall of the mounting cavity, and the toothed belt is located inside the limiting groove.

[0013] Furthermore, the variable diameter ring includes a ring body, and the variable diameter ring includes:

[0014] The ring body is located inside the mounting cavity;

[0015] A limiting part is provided at one end of the diameter ring body; it has a second limiting member; the second limiting member is provided on the side of the limiting part away from the mounting cavity;

[0016] A fixing part is provided at the other end of the ring body; the fixing part is arranged circumferentially along the mounting cavity, passes through the second limiting member, and is connected to the toothed belt; the limiting part and the fixing part form a placement cavity for placing the arm.

[0017] Furthermore, the toothed belt includes:

[0018] The toothed belt body has one part located on the side of the bracket away from the mounting cavity, and the other part located in the limiting groove.

[0019] A connecting part is provided at one end of the toothed belt body located within the mounting cavity; the connecting part extends into the mounting cavity through a notch and connects with the fixing part.

[0020] The abutting part is provided at one end of the toothed belt body away from the connecting part and passes through the abutting boss;

[0021] The transmission part is located on the side of the toothed belt away from the mounting cavity; the transmission part passes through the first limiting member.

[0022] Furthermore, the retractable boom also includes:

[0023] The control components are located in the mounting section;

[0024] A drive assembly is located on the side of the second mounting base opposite to the mounting cavity; the drive assembly has an input end and an output end, the input end being electrically connected to the control assembly; the output end being connected to the transmission part.

[0025] The current sensor is located inside the sealed cavity; the current sensor is electrically connected to the control components.

[0026] The acquisition component has one part located on the side of the bracket away from the mounting cavity, and the other part located inside the mounting cavity; the acquisition component has an airbag and a mesh; the airbag is located on the side of the variable diameter ring facing the bracket; the edge of the mesh is connected to both ends of the mounting cavity and forms a sealing cavity; the variable diameter ring is located inside the sealing cavity.

[0027] Furthermore, the acquisition components also include:

[0028] An air pump is located on the side of the bracket away from the sealed cavity; the air pump is electrically connected to the control components.

[0029] The trachea is located on the side of the support away from the sealed cavity; one end of the trachea is connected to the air pump, and the other end is connected to the air bag.

[0030] The technical solution provided in this application has the following advantages compared with the prior art:

[0031] In the technical solution of this application, the mounting base serves to support and install the retractable arm. The size of the mounting cavity formed by the interconnection of the mounting bases can be adjusted by changing the size of the mounting bases. Since the bracket is formed by connecting multiple mounting bases end to end in sequence, the bracket can be quickly assembled and disassembled, which simplifies the internal structure of the blood pressure monitor and reduces the production cost of the blood pressure monitor. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0035] Figure 1 This is a structural schematic diagram of a modular boom barrel from an exploded perspective, provided as an embodiment of this application.

[0036] Figure 2 for Figure 1 The diagram shows a structural schematic from a cross-sectional perspective.

[0037] Figure 3 for Figure 1The diagram shows a structural schematic from another perspective of the explosion.

[0038] Figure 4 for Figure 2 The diagram shows the structure of the retractable boom and the second assembly base.

[0039] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the retractable boom and the second assembly.

[0040] Explanation of reference numerals in the attached figures:

[0041] Support 1, mounting base 11, first mounting base 110, second mounting base 111, third mounting base 112, first snap-fit ​​part 113, plug 1131, second snap-fit ​​part 114, mounting cavity 12a, limiting groove 12b, mounting part 13a, abutting boss 14, notch 15a, first limiting member 16, retractable arm cylinder 2, variable diameter ring 21, ring body 21a, limiting part 21b, second limiting member 21b1 fixing part 21c, placement cavity 21d, toothed belt 22, toothed belt body 22a, connecting part 22b, abutting part 22c, transmission part 22d, control component 23, drive component 24, current sensor 25, acquisition component 3, sealing cavity 34a, air pump 32, air pipe 33. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0044] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0045] To address the technical problem of complex components in existing technologies that prevent rapid assembly and disassembly, this application provides a modular boom that simplifies the structure and reduces production costs.

[0046] Firstly, Figures 1 to 5 A modular boom provided in this application includes a support 1 and a retractable boom 2. The support 1 includes multiple mounting seats 11, which are detachably connected end to end to form a cylindrical structure with a mounting cavity 12a. The retractable boom 2 includes a variable diameter ring 21 and a toothed belt 22. The variable diameter ring 21 is circumferentially disposed in the mounting cavity 12a and fits against the cavity wall of the mounting cavity 12a. One end of the toothed belt 22 is disposed on the side of the support 1 away from the mounting cavity 12a, and the other end passes through the support 1 and is connected to the variable diameter ring 21.

[0047] Understandably, the toothed belt 22 not only allows the variable diameter ring 21 to establish a connection with the bracket 1, enabling the variable diameter ring 21 to be placed in the mounting cavity 12a, but also allows the size of the inner ring of the variable diameter ring 21 to be changed by moving the toothed belt 22. When the bracket 1 is equipped with an electric drive mechanism, the toothed belt 22 connects to the electric drive mechanism, allowing the retractable arm cylinder 2 to automatically change size. The inner ring of the variable diameter ring 21 serves to place the arm during measurement. The mounting base 11 serves to support and install the retractable arm cylinder 2. The size of the mounting cavity 12a formed by the interconnection of the mounting bases 11 can be adjusted by changing the size of the mounting bases 11. Since the bracket 1 is formed by connecting multiple mounting bases 11 end to end, the bracket 1 can be quickly assembled and disassembled, simplifying the internal structure of the blood pressure monitor and reducing the production cost of the blood pressure monitor.

[0048] like Figures 1 to 3As shown, in the technical solution of this embodiment, there are two or three assembly bases 11, and the assembly bases 11 are connected to each other to form a cylindrical structure.

[0049] like Figures 1 to 5 As shown, in the technical solution of this embodiment, the mounting bases 11 are a first mounting base 110, a second mounting base 111, and a third mounting base 112. The cross-sections of the first mounting base 110, the second mounting base 111, and the third mounting base 112 are all arc-shaped. The two ends of the first mounting base 110, the two ends of the second mounting base 111, and the two ends of the third mounting base 112 are respectively provided with a first snap-fit ​​portion 113 and a second snap-fit ​​portion 114. The first mounting base 110, the second mounting base 111, and the third mounting base 112 are connected end to end through the first snap-fit ​​portion 113 and the second snap-fit ​​portion 114 to form a cylindrical structure.

[0050] It is understood that in some embodiments, the number of mounting bases 11 can be two, while in this embodiment, the number of mounting bases 11 is three, which can better divide the functions of each mounting base 11, and the three mounting bases 11 make the bracket 1 less prone to deformation. The first snap-fit ​​part 113 and the second snap-fit ​​part 114 snap-fit ​​each other to allow the mounting bases 11 to be quickly assembled and disassembled.

[0051] like Figures 1 to 5 As shown, in the technical solution of this embodiment, the first snap-fit ​​part 113 has an elastic plug 1131, and the second snap-fit ​​part 114 has a mounting hole (not labeled in the figure), and the elastic plug 1131 matches the mounting hole.

[0052] Understandably, when it is necessary to assemble the mounting base 11 into the bracket 1, simply insert the elastic plug 1131 into the mounting hole. When it is necessary to disassemble the bracket 1, simply press the elastic plug 1131 while pulling the mounting base 11. It features stable connection and quick disassembly.

[0053] It should be noted that in some embodiments, the first snap-fit ​​portion 113 and the second snap-fit ​​portion 114 may also be configured as a mortise and tenon structure or a dovetail groove structure, or as a structure with a threaded hole and a bolt connection.

[0054] like Figures 1 to 3As shown, in the technical solution of this embodiment, the bracket 1 is provided with a mounting part 13a, an abutment boss 14, a notch 15a, and a first limiting member 16; it is mounted on the side of the bracket 1 away from the mounting cavity 12a; the abutment boss 14 is provided on the side of the bracket 1 away from the mounting cavity 12a, and the toothed belt 22 passes through the abutment boss 14 at one end away from the variable diameter ring 21, and the height of the abutment boss 14 is the same as the thickness of the toothed belt 22; the notch 15a is provided on the bracket 1, and the toothed belt 22 extends into the mounting cavity 12a through the notch 15a and connects with the variable diameter ring 21; the first limiting member 16 is provided on one side of the notch 15a, and the height of the first limiting member 16 is flush with the top surface of the notch 15a.

[0055] Understandably, the mounting part 13a provides a mounting position for the control component 23 of the blood pressure monitor; the setting of the abutment boss 14 can limit the range of movement of the toothed belt 22, and when the toothed belt 22 is in contact with the abutment boss 14, the diameter of the variable diameter ring 21 reaches its maximum; the setting of the notch 15a facilitates the toothed belt 22 to connect better with the variable diameter ring 21, thereby allowing the toothed belt 22 to better change the diameter of the variable diameter ring 21; the setting of the first limiting member 16 can limit the position of the toothed belt 22, so that the toothed belt 22 will not detach from the bracket 1.

[0056] like Figures 1 to 3 As shown, in the technical solution of this embodiment, a limiting groove 12b is provided in the mounting cavity 12a. The limiting groove 12b is arranged circumferentially along the cavity wall of the mounting cavity 12a, and the toothed belt 22 is disposed in the limiting groove 12b.

[0057] Understandably, the limiting groove 12b is designed to prevent the toothed belt 22 from wobbling when it moves, thus ensuring that the toothed belt 22 can better change the diameter of the variable diameter ring 21.

[0058] like Figures 1 to 5 As shown, in the technical solution of this embodiment, the variable diameter ring 21 includes: a ring body 21a, a limiting part 21b, and a fixing part 21c; the ring body 21a is disposed in the mounting cavity 12a; the limiting part 21b is disposed at one end of the ring body 21a; it has a second limiting member 21b1; the second limiting member 21b1 is disposed on the side of the limiting part 21b away from the mounting cavity 12a; the fixing part 21c is disposed at the other end of the ring body 21a; the fixing part 21c is disposed circumferentially along the mounting cavity 12a, passes through the second limiting member 21b1, and is connected to the toothed belt 22; the limiting part 21b and the fixing part 21c form a placement cavity 21d for placing an arm.

[0059] It is understood that the overall shape of the circumference body 21a is strip-shaped with two ends. The limiting part 21b and the fixing part 21c are respectively located at the two ends of the circumference body 21a. By setting a second limiting member 21b1 on the limiting part 21b, the circumference body 21a is always kept in a closed state within the mounting cavity 12a, ensuring that the circumference body 21a can be retracted to the size of an arm by the toothed belt 22 so that the blood pressure monitor can collect data such as blood pressure.

[0060] like Figures 1 to 5 As shown, in the technical solution of this embodiment, the toothed belt 22 includes: a toothed belt body 22a, a connecting portion 22b, an abutting portion 22c, and a transmission portion 22d; a portion of the toothed belt body 22a is located on the side of the bracket 1 away from the mounting cavity 12a, and the other portion is located in the limiting groove 12b; the connecting portion 22b is located at one end of the toothed belt body 22a located in the mounting cavity 12a; the connecting portion 22b extends into the mounting cavity 12a through a notch 15a and is connected to the fixing portion 21c; the abutting portion 22c is located at one end of the toothed belt body 22a away from the connecting portion 22b and passes through the abutting boss 14; the transmission portion 22d is located on the side of the toothed belt 22 away from the mounting cavity 12a; the transmission portion 22d passes through the first limiting member 16.

[0061] It is understandable that the toothed belt body 22a is strip-shaped with two ends. Different parts of the toothed belt body 22a have different functions. The connecting part 22b and the abutting part 22c are respectively located at both ends of the toothed belt body 22a. The transmission part 22d is located between the connecting part 22b and the abutting part 22c. The function of the connecting part 22b is to connect with the variable diameter ring 21 so that the variable diameter ring 21 moves with the toothed belt body 22a. The function of the abutting part 22c is to cooperate with the abutting boss 14 to limit the range of movement of the toothed belt body 22a, thereby limiting the maximum diameter of the variable diameter ring 21. The transmission part 22d is used to drive the drive assembly 24 so that the toothed belt body 22a moves automatically.

[0062] like Figures 1 to 5As shown, in the technical solution of this embodiment, the retractable boom 2 further includes: a control component 23, a drive component 24, a current sensor 25, and a data acquisition component 3. The control component 23 is located on the mounting part 13a; the drive component 24 is located on the side of the bracket 1 away from the mounting cavity 12a; the drive component 24 has an input end and an output end, the input end is electrically connected to the control component 23; the output end is connected to the transmission part 22d; a portion of the data acquisition component 3 is located on the side of the bracket 1 away from the mounting cavity 12a, and the other portion is located inside the mounting cavity 12a; the data acquisition component 3 has an air bladder (not labeled in the figure) and a mesh 34; the air bladder is located on the side of the variable diameter ring 21 facing the bracket 1; the edge of the mesh 34 is connected to both ends of the mounting cavity 12a and forms a sealing cavity 34a; the variable diameter ring 21 is located inside the sealing cavity 34a.

[0063] It should be noted that the airbag structure inside this modular boom is consistent with the airbag structure in existing technologies.

[0064] It is understood that the control component 23 has a control panel, a display screen, and control buttons, similar to the structure of a blood pressure monitor in the prior art. Pressing the control button enables the blood pressure monitor to automatically measure blood pressure. In this embodiment, the drive component 24 consists of a motor and a gear mounted on the moving end of the motor. The transmission part 22d in this embodiment consists of multiple sets of wave-shaped racks. The current sensor 25 works in conjunction with the motor. When the control button is pressed, the system performs a self-test. If the variable diameter ring 21 is loosened to its maximum position, the motor will stall, causing a large current (the set value is when the current is ≥2.5A and lasts for 1 second; this value is not yet certain and needs to be determined after final testing), and the motor will stop working. If it is not loosened to its maximum position, the motor reverses and drives the rack to loosen the variable diameter ring 21. When it is loosened to its maximum position... In the current state, the buckle at the end of the rack will get caught on the arm support 1, causing a stall. When the system detects a large current generated by the stalled motor, it stops rotating. After the arm is placed in the placement cavity 21d, the motor rotates forward, causing the rack to tighten the variable diameter ring 21. When the variable diameter ring 21 tightens and contacts the arm, a stall current of ≥2.5A is generated and lasts for one second. Then, the motor reverses for 200 milliseconds to loosen the variable diameter ring 21 slightly to prevent it from being too tight and affecting the user's comfort. At the same time, the self-locking characteristic of the worm gear in the reduction motor is used to lock and drive the gear to rotate. The gear meshes with the rack in the transmission part 22d, so that the force of the motor is transmitted to the toothed belt 22. When the motor rotates forward, the toothed belt 22 drives the variable diameter ring 21 to tighten. When the motor reverses, the diameter of the variable diameter ring 21 increases. The function of the acquisition component 3 is to collect the blood pressure of the person being measured.

[0065] like Figures 1 to 5As shown, in the technical solution of this embodiment, the acquisition component 3 further includes: an air pump 32 and an air tube 33; the air pump 32 is located on the side of the bracket 1 away from the sealing cavity 34a; the air pump 32 is electrically connected to the control component 23; the air tube 33 is located on the side of the bracket 1 away from the sealing cavity 34a; one end of the air tube 33 is connected to the air pump 32, and the other end is connected to the airbag.

[0066] Understandably, when blood pressure needs to be measured, the control component 23 controls the air pump 32 to start working to inflate and pressurize the airbag. When the airbag is pressurized to the point of blocking the brachial artery, the pressurization stops (the airbag can be regarded as a signal collecting amplifier; when blood flows through the artery, it will generate airflow fluctuations. When the airbag compresses the artery, the signal is relatively weak, so the air pump 32 stops pressurizing). The proportional deflation valve starts to deflate at a constant speed. After the measurement is completed, the motor starts to reverse and release the variable diameter coil 21. It stops when a large current is detected, and the measurement ends.

[0067] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0068] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical 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.

[0071] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a 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. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0073] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0074] The above describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A modular boom, characterized in that, include: The bracket (1) includes multiple mounting bases (11), which are detachably connected end to end to form a cylindrical structure with a mounting cavity (12a); The retractable boom (2) includes a variable diameter ring (21) and a toothed belt (22); the variable diameter ring (21) is circumferentially disposed in the mounting cavity (12a) and fits against the cavity wall of the mounting cavity (12a); one end of the toothed belt (22) is disposed on the side of the bracket (1) away from the mounting cavity (12a), and the other end passes through the bracket (1) and is connected to the variable diameter ring (21).

2. The modular boom according to claim 1, characterized in that, The assembly base (11) is provided in two or three, and the assembly bases (11) are connected to each other to form a cylindrical structure.

3. The modular boom according to claim 2, characterized in that, The assembly seats (11) are a first assembly seat (110), a second assembly seat (111), and a third assembly seat (112). The cross-sections of the first assembly seat (110), the second assembly seat (111), and the third assembly seat (112) are all arc-shaped. The two ends of the first assembly seat (110), the two ends of the second assembly seat (111), and the two ends of the third assembly seat (112) are respectively provided with a first snap-fit ​​part (113) and a second snap-fit ​​part (114). The first assembly seat (110), the second assembly seat (111), and the third assembly seat (112) are connected end to end through the first snap-fit ​​part (113) and the second snap-fit ​​part (114) to form a cylindrical structure.

4. The modular boom according to claim 3, characterized in that, The first snap-fit ​​portion (113) has a resilient plug (1131), and the second snap-fit ​​portion (114) has a mounting hole, wherein the resilient plug (1131) matches the mounting hole.

5. The modular boom according to claim 1, characterized in that, The bracket (1) is provided with a mounting part (13a), an abutment boss (14), a notch (15a), and a first limiting member (16); the mounting part (13a) is located on the side of the bracket (1) away from the mounting cavity (12a); the abutment boss (14) is located on the side of the bracket (1) away from the mounting cavity (12a), and the toothed belt (22) passes through the abutment boss (14) at one end away from the variable diameter ring (21), and the height of the abutment boss (14) is the same as the thickness of the toothed belt (22); the notch (15a) is located on the bracket (1), and the toothed belt (22) extends through the notch (15a) into the mounting cavity (12a) and connects with the variable diameter ring (21); the first limiting member (16) is located on one side of the notch (15a), and the height of the first limiting member (16) is flush with the top surface of the notch (15a).

6. The modular boom according to claim 5, characterized in that, The mounting cavity (12a) is provided with a limiting groove (12b), which is arranged circumferentially along the cavity wall of the mounting cavity (12a), and the toothed belt (22) is located in the limiting groove (12b).

7. The modular boom according to claim 5, characterized in that, The variable diameter ring (21) includes: The ring body (21a) is disposed within the mounting cavity (12a); A limiting part (21b) is provided at one end of the diameter ring body (21a); ​​the limiting part (21b) has a second limiting member (21b1); the second limiting member (21b1) is provided on the side of the limiting part (21b) away from the mounting cavity (12a); A fixing part (21c) is provided at the other end of the diameter ring body (21a); ​​the fixing part (21c) is arranged circumferentially along the mounting cavity (12a), passes through the second limiting member (21b1), and is connected to the toothed belt (22); the limiting part (21b) and the fixing part (21c) form a placement cavity (21d) for placing the arm.

8. The modular boom according to claim 6, characterized in that, The toothed belt (22) includes: The toothed belt body (22a) has a portion located on the side of the bracket (1) away from the mounting cavity (12a) and another portion located in the limiting groove (12b); A connecting part (22b) is provided at one end of the toothed belt body (22a) located in the mounting cavity (12a); the connecting part (22b) extends into the mounting cavity (12a) through the notch (15a) and is connected to the fixing part (21c); The abutting part (22c) is provided at one end of the toothed belt body (22a) away from the connecting part (22b) and passes through the abutting boss (14); A transmission part (22d) is provided on the side of the toothed belt (22) away from the mounting cavity (12a); the transmission part (22d) passes through the first limiting member (16).

9. The modular boom according to claim 5, characterized in that, The retractable boom (2) also includes: A control component (23) is provided in the mounting portion (13a); A drive assembly (24) is disposed on the side of the bracket (1) opposite to the mounting cavity (12a); the drive assembly (24) has an input end and an output end, the input end being electrically connected to the control assembly (23); the output end being connected to the transmission part (22d); A current sensor (25) is disposed on the side of the bracket (1) away from the mounting cavity (12a); the current sensor (25) is electrically connected to the control component (23); The acquisition component (3) is located on the side of the bracket (1) away from the mounting cavity (12a) and another part is located inside the mounting cavity (12a). The acquisition component (3) has an airbag and a mesh (34). The airbag is located on the side of the variable diameter ring (21) facing the bracket (1). The edge of the mesh (34) is connected to both ends of the mounting cavity (12a) and forms a sealing cavity (34a). The variable diameter ring (21) is located inside the sealing cavity (34a).

10. The modular boom according to claim 9, characterized in that, The acquisition component (3) also includes: An air pump (32) is located on the side of the bracket (1) away from the sealed cavity (34a); the air pump (32) is electrically connected to the control assembly (23); The air tube (33) is located on the side of the support (1) away from the sealing cavity (34a); one end of the air tube (33) is connected to the air pump (32), and the other end is connected to the air bag.

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