A manufacturing method of a pressure taking structure and a pressure taking structure

Abstract

The present invention relates to the field of medical device technology, and discloses a method for manufacturing a pressure-taking structure and a pressure-taking structure. The method for manufacturing the pressure-taking structure comprises: S1. providing a screen assembly, the screen assembly comprising a screen sheet and a support ring, the support ring having a first opening, the screen sheet being superimposed and adhered to one side of the support ring, the screen sheet completely covering the first opening, and the edge of the screen sheet protruding from the edge of the first opening; S2. providing a frame and a pressure-taking tube body, the top of the pressure-taking tube body having a pressure-taking opening, the frame being annular and having a second opening, the screen assembly and the frame being superimposed on the top of the pressure-taking tube body in sequence, the edge of the first opening surrounding the outer periphery of the top end of the pressure-taking tube body, and the second opening being arranged corresponding to the pressure opening; S3. ultrasonically welding the overlapping portions of the frame, the screen sheet, and the pressure-taking tube body; and S4. removing the screen assembly protruding from the outer wall of the pressure-taking tube body. The method for manufacturing the pressure-taking structure has good repeatability and consistency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a manufacturing method of a pressure taking structure and the pressure taking structure. Background Art

[0002] Commonly used pulmonary function testers include bellows-type spirometers, turbine-type spirometers, ultrasonic flow sensor-type spirometers, and differential pressure spirometers. Differential pressure spirometers incorporate a mesh in their pressure-sensing mechanism. When air passes through the mesh, it resists and slows down the flow rate. This results in a slight drop in pressure at the other end of the mesh, creating a pressure drop differential across the mesh. This differential pressure drop can then be used to calculate the air flow rate. The tension of the mesh plays a crucial role in determining the pressure differential, which in turn affects the test accuracy of the spirometer.

[0003] In the production of existing pressure-taking structures, some methods involve clamping the screen, the sealing ring, and the pressure-taking tube through a clamping strip assembly, while others involve injection molding the screen and the soft rubber edging at one time, and then clamping the soft rubber-edged screen to the pressure-taking tube. Both of the above production methods have some defects: injection molding requires the preparation of a fixture while meeting the tension of the screen, and the high injection pressure during injection molding can cause the screen to shift, resulting in a low yield rate and poor appearance; the design of separating the screen and the pressure-taking tube into two parts will cause the screen to change in the installation position after assembly and disassembly, resulting in a change in the pressure difference effect, thereby reducing the test accuracy of the pulmonary function meter. The above two production methods of pressure-taking structures have poor repeatability and consistency, which is not conducive to mass production. Summary of the Invention

[0004] The purpose of the present invention is to provide a manufacturing method of a pressure taking structure and a pressure taking structure, which have good repeatability and consistency, are conducive to the batch production of the pressure taking structure and ensure the accuracy of its testing.

[0005] In order to achieve the above object, the present invention provides a method for manufacturing a pressure-taking structure, comprising:

[0006] S1. Providing a screen assembly, the screen assembly comprising a screen sheet and a support ring, the support ring having a first opening, the screen sheet superimposed and adhered to one side of the support ring, the screen sheet completely covering the first opening and the edge of the screen sheet protruding from the edge of the first opening;

[0007] S2. Provide a frame and a pressure-taking tube body, the top of the pressure-taking tube body having a pressure-taking port, the frame being annular and having a second opening, and sequentially superimposing the screen assembly and the frame on the top of the pressure-taking tube body, with the edge of the first opening disposed around the outer periphery of the top of the pressure-taking tube body, and the second opening disposed correspondingly to the pressure-taking port;

[0008] S3. The overlapping portion of the frame, the screen sheet and the pressure tube body is connected by ultrasonic welding;

[0009] S4. Cut off the screen assembly protruding from the outer wall of the pressure taking tube body.

[0010] The technical solution is further described below:

[0011] In one embodiment, the screen assembly is prepared by the following steps:

[0012] Providing a screen sheet and a supporting sheet, wherein the supporting sheet is provided with a plurality of first openings at intervals;

[0013] Pasting the supporting original sheet onto one side of the screen original sheet to form a screen original assembly;

[0014] The original screen assembly is cut along the outer periphery of each of the first openings to form a plurality of the screen assemblies.

[0015] In one embodiment, a positioning shoulder is provided at the bottom of the frame along the edge of the second opening, and a positioning ring groove is provided at the top of the pressure taking tube body along the outer circumference of the pressure taking opening;

[0016] The screen assembly and the frame are sequentially superimposed on the top of the pressure-taking tube body, the edge of the first opening is arranged around the top periphery of the pressure-taking tube body, and the second opening is arranged corresponding to the pressure-taking port. Specifically,

[0017] First, place the screen assembly on the top of the pressure-taking pipe body, and the screen sheet completely covers the pressure-taking port;

[0018] Then, the frame is pressed downwardly against the screen sheet, so that the screen sheet follows the bending until the positioning shoulder is accommodated in the positioning ring groove.

[0019] In one embodiment, the height of the positioning shoulder is H1, and the depth of the positioning ring groove is H2, wherein H2>H1.

[0020] In one embodiment, the horizontal distance between the outer peripheral wall of the positioning shoulder and the side wall of the positioning ring groove is L, wherein 0.7 mm < L < 1.3 mm.

[0021] In one embodiment, a rounded corner is provided at the outer edge of the lower end of the positioning shoulder.

[0022] In one embodiment, the inner diameter of the positioning ring groove gradually increases from bottom to top.

[0023] In one embodiment, the support ring is made of PC material.

[0024] In one embodiment, the screen sheet is made of metal material.

[0025] On the other hand, the present application also relates to a pressure-taking structure, which is manufactured using the manufacturing method of the pressure-taking structure described in any of the above embodiments.

[0026] Compared with the prior art, the manufacturing method and pressure-taking structure of the embodiment of the present invention have the following advantages:

[0027] By bonding the screen sheet to the support ring, the screen sheet has outward-radiating tension so that it can remain flat; the edge of the first opening is arranged around the outer periphery of the top of the pressure-taking tube body, and when the pressure-taking tube body, the screen assembly and the frame are ultrasonically welded, the support ring is used for clamping, and can ensure the tension of the screen sheet, facilitating welding; after welding is completed, the screen assembly protruding from the outer wall of the pressure-taking tube body is cut off, that is, the support ring and the screen sheet protruding from the outer wall of the pressure-taking tube body are removed. The above method for manufacturing a pressure-taking structure can quickly manufacture a large number of screen assemblies by bonding and cutting, and is superior to injection-molded screen sheets in terms of production cost and repeatability and consistency of the finished product. The screen sheet is welded to the frame and the pressure-taking tube body as a whole, avoiding the test accuracy of the pulmonary function meter being affected by changes in the installation position of the screen sheet after assembly and disassembly, further improving the repeatability and consistency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a flow chart of a method for manufacturing a pressure-taking structure according to an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of a support sheet and a screen sheet according to an embodiment of the present invention;

[0030] Figure 3 Schematic diagram of a frame, a screen assembly, and a pressure-taking tube body stacked in sequence according to an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of ultrasonic welding of a frame, a screen assembly, and a pressure-taking tube body according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the frame, screen assembly, and pressure tube body after ultrasonic welding;

[0033] Figure 6 is a schematic diagram of a pressure taking structure according to an embodiment of the present invention;

[0034] Figure 7 yes Figure 6sectional view of

[0035] Figure 8 yes Figure 7 A magnified view of point A in FIG;

[0036] In the figure, 1. screen assembly; 11. screen sheet; 12. support ring; 121. first opening; 3. frame; 31. second opening; 32. positioning shoulder; 4. pressure taking tube body; 41. pressure taking port; 42. positioning ring groove; 5. screen original sheet; 6. support original sheet. DETAILED DESCRIPTION

[0037] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0038] In describing the present invention, it should be understood that 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 being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0039] In addition, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] like Figure 1 The figure shows a method for manufacturing a pressure-taking structure according to a preferred embodiment of the present invention. Figures 3 to 5 This is an intermediate product diagram produced by the manufacturing method of the pressure-taking structure of the present invention. The manufacturing method can be used to produce the following Figures 6 to 8 The pressure taking structure shown in FIG. The manufacturing method of the pressure taking structure includes:

[0041] S1. Provide a screen assembly 1, the screen assembly 1 comprising a screen sheet 11 and a support ring 12, the support ring 12 having a first opening 121, the screen sheet 11 being superimposed and affixed to one side of the support ring 12, the screen sheet 11 completely covering the first opening 121, and the edge of the screen sheet 11 protruding from the edge of the first opening 121;

[0042] S2. Provide a frame 3 and a pressure-taking tube body 4, the top of the pressure-taking tube body 4 having a pressure-taking port 41. The frame 3 is annular and has a second opening 31. The screen assembly 1 and the frame 3 are sequentially superimposed on the top of the pressure-taking tube body 4. The edge of the first opening 121 is arranged around the outer periphery of the top of the pressure-taking tube body 4, and the second opening 31 is arranged corresponding to the pressure-taking port 41.

[0043] S3. The overlapping portions of the frame 3, the screen sheet 11 and the pressure tube body 4 are connected by ultrasonic welding;

[0044] Specifically, as attached Figure 4 As shown, the arrows indicate the welding positions.

[0045] S4. Cut off the screen assembly 1 protruding from the outer wall of the pressure taking pipe body 4.

[0046] Based on the manufacturing method of the pressure-taking structure of the above embodiment, by bonding the screen sheet 11 to the support ring 12, the screen sheet 11 has outward-radiating tension so that it can remain flat; the edge of the first opening 121 is arranged around the top periphery of the pressure-taking tube body 4, and when the pressure-taking tube body 4, the screen assembly 1 and the frame 3 are ultrasonically welded, the support ring 12 is used for clamping, and can ensure the tension of the screen sheet 11, facilitating welding; after welding is completed, the screen assembly 1 protruding from the outer wall of the pressure-taking tube body 4 is cut off, that is, the support ring 12 and the screen sheet 11 protruding from the outer wall of the pressure-taking tube body 4 are removed. The above-mentioned method for manufacturing the pressure-taking structure can quickly produce a large number of screen assemblies 1 by gluing and cutting. Whether in terms of production cost or repeatability and consistency of the finished product, it is better than the injection-molded screen sheet 11. The screen sheet 11 is welded to the frame 3 and the pressure-taking tube body 4 as a whole, which avoids the test accuracy of the pulmonary function meter being affected by the change in the installation position of the screen sheet 11 after assembly and disassembly, thereby further improving the repeatability and consistency of the product.

[0047] In one embodiment, Figure 2 As shown, the screen assembly 1 can be prepared by the following steps:

[0048] A screen sheet 5 and a support sheet 6 are provided, wherein the support sheet 6 is provided with a plurality of first openings 121 at intervals;

[0049] Paste the supporting sheet 6 onto one side of the screen sheet 5 to form a screen assembly;

[0050] The original screen assembly is cut along the outer periphery of each of the first openings 121 to form a plurality of the screen assemblies 1 .

[0051] Preferably, the surface of the supporting original sheet 6 is coated with an adhesive material, and a diaphragm is attached to the supporting original sheet 6. Before bonding the supporting original sheet 6 to the screen original sheet 5, the diaphragm is torn off and the screen original sheet 5 can be directly attached to the supporting original sheet 6.

[0052] In one embodiment, a positioning shoulder 32 is provided at the bottom of the frame 3 along the edge of the second opening 31 , and a positioning ring groove 42 is provided at the top of the pressure taking tube body 4 along the outer circumference of the pressure taking opening 41 ;

[0053] The screen assembly 1 and the frame 3 are sequentially superimposed on the top of the pressure-taking tube body 4, the edge of the first opening 121 is arranged around the top periphery of the pressure-taking tube body 4, and the second opening 31 is arranged corresponding to the pressure-taking port 41. Specifically,

[0054] First, place the screen assembly 1 on the top of the pressure-taking pipe body 4, and the screen sheet 11 completely covers the pressure-taking port 41;

[0055] Then, the frame 3 is pressed downward on the screen sheet 11 , so that the screen sheet 11 is bent accordingly, until the positioning shoulder 32 is accommodated in the positioning ring groove 42 .

[0056] By providing the positioning shoulder 32 and the positioning annular groove 42 , the screen sheet 11 is bent between the positioning shoulder 32 and the positioning annular groove 42 , which not only increases the reliability of the next ultrasonic welding but also enables the screen sheet 11 to be further tensioned.

[0057] Furthermore, the height of the positioning shoulder 32 is H1, and the depth of the positioning ring groove 42 is H2, wherein H2>H1, so as to ensure that ultrasonic welding can be carried out smoothly.

[0058] In one embodiment, the horizontal distance between the outer peripheral wall of the positioning shoulder 32 and the side wall of the positioning ring groove 42 is L, wherein 0.7 mm < L < 1.3 mm, preferably, L is 1 mm, providing space for the screen sheet 11.

[0059] In the above embodiment, preferably, a rounded corner is provided at the outer edge of the lower end of the positioning shoulder 32 to prevent the sharp corner from applying a large stress to the screen mesh 11 when the screen mesh 11 is tensioned, causing the screen mesh 11 to undergo plastic deformation and thereby reducing the tension of the screen mesh 11.

[0060] Preferably, the inner diameter of the positioning ring groove 42 gradually increases from bottom to top.

[0061] In some preferred embodiments, the second opening 31 and the pressure tapping port 41 are circular openings, so that less stress is generated on the screen sheet 11 when the screen sheet 11 is bent between the positioning shoulder 32 and the positioning ring groove 42 .

[0062] Preferably, the supporting sheet 6 is a PC sheet, and the supporting ring 12 is a PC material ring.

[0063] Preferably, the screen sheet 11 is made of metal material.

[0064] like Figures 6 to 8 As shown, an embodiment further relates to a pressure-taking structure, which is manufactured using the manufacturing method of the pressure-taking structure in any of the above embodiments.

[0065] In summary, an embodiment of the present invention provides a manufacturing method and a pressure-taking structure, which bonds a screen sheet 11 to a support ring 12, so that the screen sheet 11 has outward-radiating tension so that it can remain flat; the edge of the first opening 121 is arranged around the top periphery of the pressure-taking tube body 4, and when the pressure-taking tube body 4, the screen assembly 1 and the frame 3 are ultrasonically welded, the support ring 12 is used for clamping, and can ensure the tension of the screen sheet 11, thereby facilitating welding; after welding is completed, the screen assembly 1 protruding from the outer wall of the pressure-taking tube body 4 is cut off, that is, the support ring 12 and the screen sheet 11 protruding from the outer wall of the pressure-taking tube body 4 are removed. The above-mentioned method for manufacturing the pressure-taking structure can quickly produce a large number of screen assemblies 1 by gluing and cutting. Whether in terms of production cost or repeatability and consistency of the finished product, it is better than the injection-molded screen sheet 11. The screen sheet 11 is welded to the frame 3 and the pressure-taking tube body 4 as a whole, which avoids the test accuracy of the pulmonary function meter being affected by the change in the installation position of the screen sheet 11 after assembly and disassembly, thereby further improving the repeatability and consistency of the product.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for manufacturing a pressure-taking structure, characterized in that: include: S1. Providing a screen assembly, the screen assembly comprising a screen sheet and a support ring, the support ring having a first opening, the screen sheet superimposed and adhered to one side of the support ring, the screen sheet completely covering the first opening and the edge of the screen sheet protruding from the edge of the first opening; S2. Provide a frame and a pressure-taking tube body, the top of the pressure-taking tube body having a pressure-taking port, the frame being annular and having a second opening, and sequentially superimposing the screen assembly and the frame on the top of the pressure-taking tube body, with the edge of the first opening disposed around the outer periphery of the top of the pressure-taking tube body, and the second opening disposed correspondingly to the pressure-taking port; S3. The overlapping portion of the frame, the screen sheet and the pressure tube body is connected by ultrasonic welding; S4. Cut off the screen assembly protruding from the outer wall of the pressure taking tube body.

2. The method for manufacturing a pressure-taking structure according to claim 1, wherein: The screen assembly is prepared by the following steps: Providing a screen sheet and a supporting sheet, wherein the supporting sheet is provided with a plurality of first openings at intervals; Pasting the supporting original sheet onto one side of the screen original sheet to form a screen original assembly; The original screen assembly is cut along the outer periphery of each of the first openings to form a plurality of the screen assemblies.

3. The method for manufacturing a pressure-taking structure according to claim 1, wherein: The bottom of the frame is provided with a positioning shoulder along the edge of the second opening, and the top of the pressure taking tube body is provided with a positioning ring groove along the outer circumference of the pressure taking opening; The screen assembly and the frame are sequentially superimposed on the top of the pressure-taking tube body, the edge of the first opening is arranged around the top periphery of the pressure-taking tube body, and the second opening is arranged corresponding to the pressure-taking port. Specifically, First, place the screen assembly on the top of the pressure-taking pipe body, and the screen sheet completely covers the pressure-taking port; Then, the frame is pressed downwardly against the screen sheet, so that the screen sheet follows the bending until the positioning shoulder is accommodated in the positioning ring groove.

4. The method for manufacturing a pressure-taking structure according to claim 3, wherein: The height of the positioning shoulder is H1, and the depth of the positioning ring groove is H2, wherein H2>H1.

5. The method for manufacturing a pressure-taking structure according to claim 3, characterized in that: The horizontal distance between the outer peripheral wall of the positioning shoulder and the side wall of the positioning ring groove is L, wherein 0.7 mm < L < 1.3 mm.

6. The method for manufacturing a pressure-taking structure according to claim 3, characterized in that: The outer edge of the lower end of the positioning shoulder is provided with a rounded corner.

7. The method for manufacturing a pressure-taking structure according to claim 3, characterized in that: The inner diameter of the positioning ring groove gradually increases from bottom to top.

8. The method for manufacturing a pressure-taking structure according to claim 1, characterized in that: The support ring is made of PC material.

9. The method for manufacturing a pressure-taking structure according to claim 1, wherein: The screen sheet is made of metal material.

10. A pressure taking structure, characterized in that: The pressure-taking structure is manufactured by the manufacturing method of any one of claims 1 to 9.

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