A testing fixture and inspection equipment

Abstract

This utility model belongs to the field of product testing technology and discloses a testing fixture and testing equipment. A carrier component has a first connecting hole and a second connecting hole. The first connecting hole extends horizontally, and multiple second connecting holes extend vertically and are spaced apart horizontally. The first connecting hole communicates with the second connecting hole. An adapter corresponds to each of the second connecting holes. The adapter has a through hole along its extension direction and openings at both ends. One end of the adapter is detachably connected to and selectively communicates with the second connecting hole, and the other end abuts against and communicates with the pressure sensor. A sealing assembly includes a first sealing element and a second sealing element, which are respectively disposed between the adapter, the second connecting hole, and the pressure sensor. A pneumatic assembly includes a pneumatic component and a connecting pipe. The connecting pipe is detachably connected to and selectively communicates with the first connecting hole. The pneumatic component provides pneumatic pressure to the pressure sensor through the connecting pipe, the first connecting hole, the second connecting hole, and the adapter.

Description

Technical Field

[0001] This utility model relates to the field of product testing technology, and in particular to a testing fixture and testing equipment. Background Technology

[0002] Currently, testing fixtures for ultrasonic flowmeter electronic pressure sensors are widely used in the industry. Their core function is to fix the pressure sensor and test its airtightness, ensuring that the pressure sensor meets the performance standards.

[0003] However, existing testing fixtures still have many shortcomings in practical use. On the one hand, traditional testing fixtures have poor stability in fixing the pressure sensor. During air pressure testing, the pressure sensor is prone to slight displacement or loosening, affecting the sealing of the pressure sensor during testing, thus leading to pressure transmission deviations. This makes it difficult to guarantee the accuracy of the measured pressure data, resulting in errors in the test results and reducing the reliability of product quality control. On the other hand, existing testing fixtures have low testing efficiency, usually only allowing for testing of individual products one by one. In large-scale production scenarios, frequent loading, testing, and unloading operations make the testing process cumbersome and lengthy, consuming a lot of manpower and time costs, severely restricting the improvement of production efficiency and failing to meet the ever-increasing production demands. Utility Model Content

[0004] The purpose of this invention is to provide a testing fixture and inspection equipment to solve the problems of poor stability of the fixing structure of the pressure sensor in the existing testing fixture, which affects the sealing performance and pressure transmission accuracy of the pressure sensor during inspection; and the low inspection efficiency of the existing testing fixture, which can usually only inspect individual products one by one, and cannot meet the production needs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On the one hand, a test fixture is provided, including:

[0007] A carrier extends horizontally and has a first connecting hole and a second connecting hole. The first connecting hole extends horizontally, and the second connecting hole extends vertically and is provided at intervals along the horizontal direction. The first connecting hole communicates with the second connecting hole.

[0008] The adapter corresponds one-to-one with the second connecting hole. The adapter has a through hole along the extension direction and openings at both ends. One end of the adapter is detachably connected to and selectively communicates with the second connecting hole, and the other end abuts against and communicates with the pressure sensor.

[0009] A sealing assembly, comprising a first sealing element and a second sealing element, wherein the first sealing element is disposed between the adapter and the second connecting hole, and the second sealing element is disposed between the adapter and the pressure sensor; and a pneumatic assembly, comprising a pneumatic component and a connecting pipe, wherein the connecting pipe is detachably connected to and selectively communicates with the first connecting hole, and the pneumatic component is capable of providing pneumatic pressure to the pressure sensor through the connecting pipe, the first connecting hole, the second connecting hole, and the adapter.

[0010] As an optional technical solution for the testing fixture, the first sealing element abuts against the adapter and the second connecting hole to seal the gap between the adapter and the second connecting hole.

[0011] As an optional technical solution for testing fixtures, the first sealing element is configured as an annular gasket.

[0012] As an optional technical solution for testing fixtures, the inner diameter of the annular gasket is the same as the inner diameter of the second connecting hole.

[0013] As an optional technical solution for testing fixtures, one end of the adapter is provided with an annular positioning groove, and the second sealing member is placed in the annular positioning groove to seal the gap between the adapter and the pressure sensor.

[0014] As an optional technical solution for testing fixtures, the second sealing element is set as an O-ring.

[0015] As an optional technical solution for testing fixtures, the inner diameter of the through hole is the same as the inner diameter of the second connecting hole.

[0016] As an optional technical solution for testing fixtures, the carrier includes a first carrier part and a second carrier part, the outer diameter of the first carrier part is larger than the outer diameter of the second carrier part, and the first connecting hole and the second connecting hole are both located in the second carrier part.

[0017] As an optional technical solution for the testing fixture, the testing fixture also includes a fixing nut. The outer periphery of the adapter near the pressure sensor is provided with threads. The fixing nut is screwed to the adapter and abuts against the outer periphery of the pressure sensor to fix the pressure sensor.

[0018] As an optional technical solution for testing fixtures, the bearing component, the adapter component, and the fixing nut are all made of alloy material.

[0019] On the other hand, a testing device is provided, including the aforementioned testing fixture.

[0020] The beneficial effects of this utility model are:

[0021] This application provides a testing fixture and testing equipment. The testing fixture includes a carrier, an adapter, a sealing assembly, and a pneumatic assembly. The carrier extends horizontally and has a first connecting hole and a second connecting hole. The first connecting hole extends horizontally, and multiple second connecting holes extend vertically and are spaced apart horizontally. The first connecting hole communicates with the second connecting hole. The adapter corresponds to the second connecting hole one-to-one. The adapter has a through hole along its extension direction and openings at both ends. One end of the adapter is detachably connected to and selectively communicates with the second connecting hole, and the other end abuts against and communicates with a pressure sensor. The sealing assembly includes a first sealing element and a second sealing element. The first sealing element is disposed between the adapter and the second connecting hole, and the second sealing element is disposed between the adapter and the pressure sensor. The pneumatic assembly includes a pneumatic component and a connecting pipe. The connecting pipe is detachably connected to and selectively communicates with the first connecting hole. The pneumatic component can provide air pressure to the pressure sensor through the connecting pipe, the first connecting hole, the second connecting hole, and the adapter. By setting up a first seal and a second seal, the probability of gas leakage between the adapter and the second connecting hole and the pressure sensor can be reduced, thereby improving the sealing performance of the pressure sensor during detection and the accuracy of the pressure data. By setting up multiple second connecting holes that communicate with the first connecting hole, gas can be introduced into the first connecting hole, allowing gas to flow into multiple second connecting holes simultaneously, thus meeting the requirement of testing multiple pressure sensors in a single test and improving testing efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a cross-sectional view of the test fixture structure provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the test fixture structure provided in an embodiment of the present invention.

[0025] In the picture:

[0026] 1. Pressure sensor;

[0027] 10. Supporting component; 11. First connecting hole; 12. Second connecting hole; 13. First supporting part; 14. Second supporting part;

[0028] 20. Adapter; 21. Through hole;

[0029] 30. Sealing assembly; 31. First seal; 32. Second seal;

[0030] 40. Secure the nuts. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection 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 utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly 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 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 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.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship based on the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] In existing technologies, the stability of the pressure sensor fixing structure in testing fixtures is unsatisfactory. During air pressure testing, the pressure sensor is prone to slight displacement or loosening, affecting its sealing performance and leading to pressure transmission deviations. This makes it difficult to guarantee the accuracy of the measured pressure data, resulting in errors in the test results and reducing the reliability of product quality control. Furthermore, existing testing fixtures are inefficient, typically only allowing for individual product testing. In large-scale production scenarios, frequent loading, testing, and unloading operations make the testing process cumbersome and lengthy, consuming significant manpower and time costs, severely hindering production efficiency and failing to meet ever-increasing production demands.

[0036] To address the aforementioned problems, this embodiment provides a testing device, including a testing fixture. Specifically, see [link to relevant documentation]. Figure 1 and Figure 2 The testing fixture includes a carrier 10, an adapter 20, a sealing assembly 30, and a pneumatic assembly. The carrier 10 extends horizontally and has a first connecting hole 11 and a second connecting hole 12. The first connecting hole 11 extends horizontally, and the second connecting holes 12 extend vertically and are spaced apart horizontally. The first connecting hole 11 and the second connecting hole 12 communicate with each other. In this embodiment, five second connecting holes 12 are provided. The adapter 20 corresponds one-to-one with the second connecting holes 12. The adapter 20 has a through hole 21 along its extension direction and openings at both ends. One end of the adapter 20 is detachably connected to and selectively communicates with the second connecting hole 12, and the other end abuts against and communicates with the pressure sensor 1. The sealing assembly 30 includes a first sealing element 31 and a second sealing element 32. The first sealing element 31 is disposed between the adapter 20 and the second connecting hole 12, and the second sealing element 32 is disposed between the adapter 20 and the pressure sensor 1. The pneumatic assembly includes a pneumatic component and a connecting pipe. The connecting pipe is detachably connected to and selectively communicates with the first connecting hole 11. The pneumatic component can provide pneumatic pressure to the pressure sensor 1 through the connecting pipe, the first connecting hole 11, the second connecting hole 12, and the adapter 20. By setting the first sealing element 31 and the second sealing element 32, the probability of gas leakage between the adapter 20, the second connecting hole 12, and the pressure sensor 1 can be reduced, thereby improving the sealing performance of the pressure sensor 1 during detection and the accuracy of the pressure data. By setting multiple second connecting holes 12 communicating with the first connecting hole 11, gas can be introduced into the first connecting hole 11, allowing gas to enter multiple second connecting holes 12 simultaneously, thus meeting the requirement of testing multiple pressure sensors 1 in a single test and improving testing efficiency.

[0037] Specifically, the pneumatic components include air pumps, air compressors, or air tightness testers, etc. Since pneumatic components are existing technology, they will not be described in detail here. Specifically, the adapter 20 is configured as an adapter pipe.

[0038] In this embodiment, the first sealing element 31 abuts against the adapter 20 and the second connecting hole 12 to seal the gap between the adapter 20 and the second connecting hole 12. Specifically, the first sealing element 31 is configured as an annular gasket. In other embodiments, the first sealing element 31 may be configured as a sealing rubber ring or sealing foam to seal the gap between the adapter 20 and the second connecting hole 12. In this embodiment, the inner diameter of the annular gasket is the same as the inner diameter of the second connecting hole 12. In other embodiments, the inner diameter of the annular gasket only needs to be smaller than the outer diameter of the adapter 20.

[0039] In this embodiment, one end of the adapter 20 is provided with an annular groove, and the second seal 32 is placed in the annular groove to seal the gap between the adapter 20 and the pressure sensor 1. Specifically, the second seal 32 is an O-ring. In other embodiments, the second seal 32 can be a sealing rubber ring or sealing foam to seal the gap between the adapter 20 and the pressure sensor 1. Specifically, the inner diameter of the annular groove is larger than the inner diameter of the through hole 21 and smaller than the outer diameter of the adapter 20. Specifically, the inner diameter of the through hole 21 is the same as the inner diameter of the second connecting hole 12.

[0040] Furthermore, the support member 10 includes a first support portion 13 and a second support portion 14. The outer diameter of the first support portion 13 is larger than the outer diameter of the second support portion 14. The first connecting hole 11 and the second connecting hole 12 are both located in the second support portion 14. Specifically, both the first support portion 13 and the second support portion 14 are configured as quadrangular prisms and integrally formed. The first support portion 13 is used to abut against the worktable, increasing the contact area between the support member 10 and the worktable, thereby increasing the stability of the support member 10. In other embodiments, fasteners or crimping members can be provided between the first support portion 13 and the worktable to fix the position of the support member 10. Since fasteners or crimping members are existing technologies, they will not be described in detail here.

[0041] Furthermore, the testing fixture also includes a fixing nut 40. The outer periphery of the adapter 20 near the pressure sensor 1 is threaded. The fixing nut 40 is screwed onto the adapter 20 and abuts against the outer periphery of the pressure sensor 1 to fix the pressure sensor 1. After the fixing nut 40 is screwed onto the adapter 20, it tightly abuts against the outer periphery of the pressure sensor 1. The abutment between the fixing nut 40 and the pressure sensor 1 increases the stability of the pressure sensor 1.

[0042] Furthermore, the load-bearing component 10, the adapter component 20, and the fixing nut 40 are all made of alloy materials. These alloys include aluminum alloys, titanium alloys, and stainless steel alloys. Aluminum alloys, with their low density and light weight, ensure the testing fixture is lightweight and easy to operate, while their excellent corrosion resistance protects it from moisture and chemical reagents encountered during testing. Titanium alloys possess extremely high strength and hardness, capable of withstanding high pressure under extreme atmospheric pressure environments without easily deforming or damaging them. Their biocompatibility and high-temperature resistance ensure stable operation of the testing fixture in complex environments. Stainless steel alloys, with their excellent rust resistance and mechanical properties, ensure the testing fixture maintains accuracy and reliability even during long-term, frequent use. The application of multiple alloy materials gives the testing fixture advantages such as high strength, corrosion resistance, and lightweight design, effectively improving testing efficiency and safety, and extending the service life of the testing fixture.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A test fixture, characterized by, include: The support member (10) extends in a horizontal direction and has a first connecting hole (11) and a second connecting hole (12). The first connecting hole (11) extends in the horizontal direction and the second connecting hole (12) extends in a vertical direction and is provided with a plurality of holes spaced apart in the horizontal direction. The first connecting hole (11) and the second connecting hole (12) communicate with each other. The adapter (20) corresponds one-to-one with the second connecting hole (12). The adapter (20) has a through hole (21) along the extension direction and has openings at both ends. One end of the adapter (20) is detachably connected to the second connecting hole (12) and selectively communicates with it, while the other end abuts against and communicates with the pressure sensor (1). A sealing assembly (30) includes a first sealing element (31) and a second sealing element (32). The first sealing element (31) is disposed between the adapter (20) and the second connecting hole (12), and the second sealing element (32) is disposed between the adapter (20) and the pressure sensor (1). The pneumatic assembly includes a pneumatic component and a connecting pipe. The connecting pipe is detachably connected to and selectively communicates with the first connecting hole (11). The pneumatic component can provide air pressure to the pressure sensor (1) through the connecting pipe, the first connecting hole (11), the second connecting hole (12), and the adapter (20).

2. The test fixture of claim 1, wherein, The first seal (31) abuts against the adapter (20) and the second connecting hole (12) to seal the gap between the adapter (20) and the second connecting hole (12).

3. The test fixture of claim 2, wherein, The first seal (31) is configured as an annular gasket.

4. The test fixture of claim 3, wherein, The inner diameter of the annular gasket is the same as the inner diameter of the second connecting hole (12).

5. The test fixture of claim 1, wherein, One end of the adapter (20) is provided with an annular groove, and the second seal (32) is placed in the annular groove to seal the gap between the adapter (20) and the pressure sensor (1).

6. The test fixture of claim 4, wherein, The second seal (32) is configured as an O-ring.

7. The test fixture of claim 1, wherein The inner diameter of the through hole (21) is the same as the inner diameter of the second connecting hole (12).

8. The test fixture of claim 1, wherein, The support member (10) includes a first support part (13) and a second support part (14). The outer diameter of the first support part (13) is larger than the outer diameter of the second support part (14). The first connecting hole (11) and the second connecting hole (12) are both located in the second support part (14).

9. The test fixture according to any one of claims 1-8, characterized in that, The test fixture also includes a fixing nut (40). The outer periphery of the adapter (20) near the pressure sensor (1) is provided with threads. The fixing nut (40) is screwed to the adapter (20) and abuts against the outer periphery of the pressure sensor (1) to fix the pressure sensor (1).

10. A testing device, characterized in that, Includes the test fixture as described in any one of claims 1-9.

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