A wearable product waterproof function detection device and detection method
By designing a waterproof function detection device for wearable products, using fixtures and pipeline structures combined with internal and external pressurization detection, the problem of the existing technology being unable to detect leakage of display screens and lenses separately, achieving high accuracy and low cost waterproof function detection .
Patent Information
- Application Number
- CN202010088741.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-02-12
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2040-02-12
AI Technical Summary
The existing waterproof function detection structure cannot detect leakage in the adhesive parts and lenses of the wearable product display screen, resulting in the inability to carry out targeted rework or adjust the production process.
A wearable product waterproof function detection device is designed. Through internal pressure and external pressure, the fixture and pipeline structure are used, combined with a leak detector to detect pressure changes, and indirectly determine whether there is leakage at the display screen and lens.
It realizes accurate detection of the waterproof function of wearable products, can judge leakage at the display screen and lens, and improves detection accuracy and cost-effectiveness.
Smart Images
Figure CN111122072B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of nondestructive testing, and in particular to a device and method for testing the waterproof function of a wearable product. Background Art
[0002] Wearable products are wearable devices, which are portable devices that can be worn directly on the body or integrated into the user's clothes or accessories. Wearable products are not just hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Wearable products will bring great changes to our lives and perceptions.
[0003] Wearable products generally include display screens and lenses (or lenses). Both display screens and lenses are fixed to the shell of wearable products by adhesion, which will directly affect the waterproof level of wearable products. Therefore, it is necessary to test the waterproof function of wearable products to determine whether they can reach the corresponding waterproof level. The display screen generally covers the entire upper surface of the wearable product. Due to the product appearance design, the adhesive part of the display screen cannot be effectively sealed alone, so it cannot be directly tested. However, the process requires that it must be able to detect whether there is leakage at the screen. The existing waterproof function detection structure can only detect whether the product as a whole has leakage, and cannot determine whether it is leaking at the adhesive part of the display screen or at the lens, so it is impossible to perform targeted repairs or adjust the production process. Summary of the invention
[0004] In order to overcome the shortcomings of the prior art, one of the objects of the present invention is to provide a wearable product waterproof function testing device, which has a simple structure and can realize waterproof function testing by internal pressurization and external pressurization with high accuracy.
[0005] One of the purposes of the present invention is achieved by the following technical solution:
[0006] A device for detecting a waterproof function of a wearable product, the wearable product comprising a shell, a display screen and a lens, the display screen being mounted on the upper end of the shell, an opening being arranged at the lower end of the shell, and the lens being mounted on a first side of the shell; the detection device comprising an upper clamp, a lower clamp, a blocking device, a first pipeline, a second pipeline and a third pipeline, the upper clamp being mounted on the upper side of the lower clamp, a closed accommodating space being formed between the upper clamp and the lower clamp, the wearable product being mounted in the accommodating space, the blocking device being used to extend into the accommodating space to block the first side, and the lens being located in a blocking cavity formed by the first side and the blocking device; one end of the first pipeline being connected to the accommodating space, and the other end of the first pipeline extending out of the accommodating space to form a first port; one end of the second pipeline being connected to a cavity of the wearable product through the opening, and the other end of the second pipeline extending out of the cavity of the wearable product to form a second port; one end of the third pipeline extending into the blocking cavity, and the other end of the third pipeline extending out of the blocking cavity to form a third port.
[0007] Furthermore, the upper clamp includes an upper clamp body and an annular body, the annular body is located on the lower side of the upper clamp body; the upper clamp body and the annular body are fixedly connected or integrally formed; the lower end of the annular body is installed on the upper side of the lower clamp, and the accommodating space is formed between the annular body and the lower clamp.
[0008] Furthermore, the annular body and the lower clamp are sealed by a first sealing ring.
[0009] Furthermore, the lower clamp includes a lower clamp body and a support block located on the upper side of the lower clamp body, the lower clamp body and the support block are fixedly connected or integrally formed, the support block extends into the accommodating space, and the lower end of the wearable product is supported by the support block.
[0010] Furthermore, the lower clamp is a hollow structure, and the upper end of the hollow structure extends to the upper end surface of the support block; a seal is provided at the lower end of the wearable product, and the seal and the wearable product form a sealed cavity; one end of the first pipeline passes through the hollow structure and is connected to the accommodating space, and the first port is located on the outside of the lower clamp; one end of the second pipeline passes through the hollow structure and the seal and is connected to the sealed cavity, and the second port is located on the outside of the lower clamp.
[0011] Furthermore, the sealing member and the lower end of the shell are sealed by a second sealing ring.
[0012] Furthermore, a pressing piece is fixedly connected to or integrally formed with the lower end of the upper clamp body, and the pressing piece is located in the annular body and is used to press the upper end of the shell, and the display screen is located in a connecting cavity formed by the pressing piece and the shell.
[0013] Furthermore, one end of the first pipeline is communicated with the accommodating space and / or communicated with the connecting cavity.
[0014] Furthermore, the detection device also includes an extrusion device, which includes a fixing part and an extrusion part. The fixing part is fixedly installed on the lower end of the upper clamp body, and a guide hole is provided on the fixing part. One end of the sealing device passes through the annular body to block the first side, and the extrusion part extends into the guide hole to extrude the other end of the sealing device.
[0015] The second object of the present invention is to provide a method for testing the waterproof function of a wearable product, which can realize waterproof function testing by internal pressurization and external pressurization with high accuracy.
[0016] The second object of the present invention is achieved by adopting the following technical solution:
[0017] A method for testing the waterproof function of a wearable product, which uses the wearable product waterproof function testing device described in one of the purposes of the present invention to implement waterproof testing of the wearable product, and comprises the following steps:
[0018] Internal pressurization is used to detect whether the wearable product leaks air outward, and the internal pressurization detection includes the following steps:
[0019] The opening of the wearable product is sealed by a sealing member, and the first side is sealed by a sealing device; the first port is connected to the external atmosphere, a first leak detector is connected to the second port to detect pressure drop, and a second leak detector is connected to the third port to detect pressure rise;
[0020] The test result is judged by comparing the pressure drop value tested by the first leak detector: when the pressure drop value is less than or equal to the first preset leakage value, the wearable product meets the first condition; otherwise, the pressure drop value tested by the first leak detector is compared with the pressure rise value tested by the second leak detector. If the difference between the pressure drop value tested by the first leak detector and the pressure rise value tested by the second leak detector is within the first preset range, there is a first leak; if the pressure rise value tested by the second leak detector is less than the first preset value, there is a second leak; if the pressure rise value tested by the second leak detector is between 40% of the pressure drop value tested by the first leak detector and 60% of the pressure drop value tested by the first leak detector, there is a third leak;
[0021] External pressurization is used to detect whether the wearable product has internal leakage. The external pressurization detection includes the following steps:
[0022] The opening of the wearable product is sealed by a seal, the first side where the lens is located is not sealed, the second port is connected to the external atmosphere, and the first port is connected to a third leak detector to detect pressure drop;
[0023] If the pressure drop value tested by the third leak detector is less than the second preset threshold value, the product meets the second condition; otherwise, the pressure drop value tested by the third leak detector is recorded, and the first side is sealed separately through the plugging device, and the fourth leak detector is connected to the third port to detect the pressure drop; if the difference between the pressure drop value tested by the fourth leak detector and the pressure drop value tested by the third leak detector is within the second preset range, there is a fourth leak; if the pressure drop value tested by the fourth leak detector is less than the second preset value, there is a fifth leak; if the pressure drop value tested by the fourth leak detector is between 40% of the pressure drop value tested by the third leak detector and 60% of the pressure drop value tested by the third leak detector, there is a sixth leak;
[0024] When the first condition and the second condition are met at the same time, the wearable product is qualified; when the first leakage and the fourth leakage exist at the same time, there is leakage at the lens and no leakage at the display screen; when the second leakage and the fifth leakage exist at the same time, there is leakage at the display screen and no leakage at the lens; when the third leakage and the sixth leakage exist at the same time, the first leakage has leakage at both the display screen and the lens.
[0025] The present invention provides a device and method for detecting the waterproof function of a wearable product. Compared with the prior art, the present invention has the beneficial effects of detecting the waterproof function of a wearable product by combining internal pressurization and external pressurization, and the judgment is accurate. At the same time, the present invention has a simple structure, low cost, and is easy to popularize. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a structural diagram of a device for detecting the waterproof function of a wearable product according to an embodiment of the present invention;
[0027] Figure 2 is a structural diagram of an upper clamp according to an embodiment of the present invention;
[0028] Figure 3 is a structural diagram of a lower clamp according to an embodiment of the present invention;
[0029] Figure 4 Schematic diagram of the structure of a wearable product according to an embodiment of the present invention.
[0030] In the figure: 10, upper clamp; 11, upper clamp body; 12, annular body; 13, pressing member; 14, fixing member; 15, extrusion member; 20, lower clamp; 21, lower clamp body; 22, supporting block; 221, perforation; 30, wearable product; 31, shell; 32, display screen; 33, lens; 34, opening; 40, blocking device; 50, first pipeline; 51, first port; 60, second pipeline; 61, second port; 70, third pipeline; 80, sealing member.
[0031] Specific embodiment
[0032] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form a new embodiment. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market.
[0033] Example:
[0034] Please refer to Figure 4 As shown, the wearable product 30 mainly includes a shell 31, a display screen 32 and a lens 33. The display screen 32 is installed at the upper end of the shell 31, and an opening 34 is set at the lower end of the shell 31. The lens 33 is installed on the first side of the shell 31. The first side here is not limited, and generally refers to the side of the shell 31. Of course, it can also be a part of the side of the display screen 32 or the lower end of the shell 31. The display screen 32 and the lens 33 are both fixed to the shell 31 by adhesion. Of course, the shell 31 of the wearable product 30 will also include corresponding circuit boards and sensors. The waterproof function test of the wearable product 30 here is a test when the inside of the shell 31 is a cavity, mainly testing whether there is leakage at the display screen 32 and the lens 33.
[0035] Since wearable products usually have multiple adhesive parts at the same time, the adhesive parts of the display screen 32 cannot be effectively sealed separately due to the product appearance design, and cannot be directly tested. However, the process requires that it is possible to detect whether there is leakage at the screen.
[0036] To address these issues, we propose an indirect test device, please refer to Figure 1 As shown, a device for detecting the waterproof function of a wearable product includes an upper clamp 10, a lower clamp 20, a blocking device 40, a first pipeline 50, a second pipeline 60 and a third pipeline 70.
[0037] The upper clamp 10 is installed on the upper side of the lower clamp 20. The upper clamp 10 and the lower clamp 20 can be fixedly connected by a threaded connection or the like, or the upper clamp 10 and the lower clamp 20 can be pressed up and down by a clamping mechanism. At the same time, the upper clamp 10 and the lower clamp 20 are sealed by a first sealing ring, and a closed accommodating space is formed between the upper clamp 10 and the lower clamp 20; the wearable product 30 is installed in the accommodating space.
[0038] The blocking device 40 is used to extend into the accommodating space to block the first side, and the lens 33 is located in the blocking cavity formed by the first side and the blocking device 40; one end of the first pipeline 50 is connected to the accommodating space, and the other end of the first pipeline 50 extends out of the accommodating space to form a first port 51 (i.e., port A); one end of the second pipeline 60 is connected to the chamber of the wearable product 30 through the opening 34, and the other end of the second pipeline 60 extends out of the chamber of the wearable product 30 to form a second port 61 (i.e., port B); one end of the third pipeline 70 extends into the blocking cavity, and the other end of the third pipeline 70 extends out of the blocking cavity to form a third port (i.e., port C). The three ports are used to connect a leak detector or connect to the atmosphere to realize internal or external pressurization to detect whether there is leakage at the display screen 32 and the lens 33 of the wearable product 30. In order to achieve a sealing effect, a sealing ring is provided between the blocking device 40 and the annular body 12 to seal the accommodating space.
[0039] Please refer to Figure 2 As shown, the upper fixture 10 includes an upper fixture body 11 and an annular body 12, the annular body 12 is located at the lower side of the upper fixture body 11; the upper fixture body 11 and the annular body 12 are fixedly connected or integrally formed; the lower end of the annular body 12 is installed on the upper side of the lower fixture 20, and an accommodating space is formed between the annular body 12 and the lower fixture 20. In order to achieve a sealing effect, the annular body 12 and the lower fixture 20 are sealed by a first sealing ring.
[0040] The upper clamp 10 is also equipped with an extrusion device, which includes a fixing part 14 and an extrusion part 15. The fixing part 14 is fixedly installed at the lower end of the upper clamp body 11. A guide hole is provided on the fixing part 14. One end of the sealing device 40 passes through the annular body 12 to block the first side. The extrusion part 15 extends into the guide hole to extrude the other end of the sealing device 40. For example, one end of the extrusion part 15 can be fixedly connected to the other end of the sealing device 40. The first side can be sealed or not sealed by the cooperation of the extrusion part 15 and the sealing device 40. Of course, a limiting mechanism can be provided on the extrusion part 15 so that the extrusion part 15 will not slide when the first side is sealed.
[0041] In order to prevent the wearable product 30 from shaking due to air pressure during the test, in a preferred embodiment of the present invention, the lower end of the upper clamp body 11 is also fixedly connected or integrally formed with a clamping piece 13, and the clamping piece 13 is located in the annular body 12, and is used to clamp the upper end of the shell 31, and the display screen 32 is located in the connecting cavity formed by the clamping piece 13 and the shell 31. Although the clamping piece 13 presses the shell 31, this physical compression cannot prevent the gas exchange between the accommodating space (which can be considered here as the area surrounded by the annular body 12, the lower clamp body 21, the support block 22, the wearable product 30 and the clamping piece 13) and the connecting cavity. Therefore, one end of the first pipeline 50 can be connected to the accommodating space or the connecting cavity. Of course, one end of the first pipeline 50 can also be connected to both the accommodating space and the connecting cavity.
[0042] Please refer to Figure 3 As shown, the lower clamp 20 includes a lower clamp body 21 and a support block 22 located on the upper side of the lower clamp body 21. The lower clamp body 21 is fixedly connected to or integrally formed with the support block 22. The support block 22 extends into the accommodating space, and the lower end of the wearable product 30 is supported by the support block 22.
[0043] As an embodiment, a hollow structure can be provided inside the lower fixture 20, the upper end of the hollow structure extends to the upper end surface of the support block 22, and the hollow structure is connected to the chamber of the wearable product 30 through the perforation 221 provided on the upper end surface of the support block 22; a seal 80 is provided at the lower end of the wearable product 30, and the seal 80 separates the hollow structure from the chamber of the wearable product 30; one end of the first pipeline 50 passes through the hollow structure and communicates with the accommodating space, and the first port 51 is located outside the lower fixture 20; one end of the second pipeline 60 passes through the hollow structure and the seal 80 and communicates with the sealed cavity, and the second port 61 is located outside the lower fixture 20. The method of providing the hollow structure in the lower fixture 20 facilitates the installation of the first pipeline 50 and the second pipeline 60, and can also save costs. In order to achieve the sealing effect, the seal 80 and the lower end of the housing 31 are sealed by a second sealing ring.
[0044] The above-mentioned wearable product waterproof function detection device implements a method for waterproof detection of the wearable product 30, including waterproof function detection by internal pressurization and waterproof function detection by external pressurization.
[0045] Specifically, the waterproof function test of internal pressurization is internal pressurization, which is used to detect whether the wearable product 30 leaks outward, and includes the following steps:
[0046] The opening 34 of the wearable product 30 is sealed by the sealing member 80, and the first side is blocked by the blocking device 40; the first port 51 is connected to the external atmosphere, the second port 61 is connected to a first leak detector to detect a pressure drop, and the third port is connected to a second leak detector to detect a pressure rise;
[0047] The test result is judged by comparing the pressure drop value of the first leak detector test: when the pressure drop value is less than or equal to the first preset leakage value, the wearable product 30 meets the first condition; otherwise, the pressure drop value of the first leak detector test is compared with the pressure rise value of the second leak detector test. If the difference between the pressure drop value of the first leak detector test and the pressure rise value of the second leak detector test is within the first preset range (set as needed, in a preferred embodiment of the present invention, when the pressure drop value of the first leak detector test is close to the pressure rise value of the second leak detector test, it is considered to be within the first preset range, that is, the first preset range is a smaller value), then there is a first leakage; if the pressure rise value of the second leak detector test is less than the first preset value (set as needed, in a preferred embodiment of the present invention, the first preset value is very small, for example 15Pa), then there is a second leakage; if the pressure rise value of the second leak detector test is between 40% of the pressure drop value of the first leak detector test and 60% of the pressure drop value of the first leak detector test, then there is a third leakage.
[0048] The above can be used as a judgment method, that is, the waterproof test result of the wearable product 30 can be obtained by internal pressurization: when the first condition is met, the wearable product 30 is qualified; when there is a first leak, there is a leak at the lens 33, and there is no leak at the display screen 32; when there is a second leak, there is a leak at the display screen 32, and there is no leak at the lens 33; when there is a third leak, the first leak has leaks at both the display screen 32 and the lens 33.
[0049] The waterproof function test of external pressure is to test whether the wearable product 30 has internal leakage by external pressure, which includes the following steps:
[0050] The opening 34 of the wearable product 30 is sealed by the sealing member 80, the first side where the lens 33 is located is not sealed, the second port 61 is connected to the external atmosphere, and the first port 51 is connected to the third leak detector to detect the pressure drop;
[0051] If the pressure drop value tested by the third leak detector is less than the second preset threshold value, the product meets the second condition; otherwise, the pressure drop value tested by the third leak detector is recorded (referred to as the recorded value), and the first side is sealed separately through the sealing device 40 (at this time, whether the opening 34 of the wearable product 30 is sealed and whether the first port 51 and the second port 61 are connected to the atmosphere or the tester is not concerned, and only the relationship between the pressure drop value tested by the fourth leak detector and the recorded value needs to be compared), and the fourth leak detector is connected to the third port to detect the pressure drop; if the difference between the pressure drop value tested by the fourth leak detector and the pressure drop value tested by the third leak detector is within the second preset range (which may be similar to the first preset range), there is a fourth leak; if the pressure drop value tested by the fourth leak detector is less than the second preset value (which may be similar to the first preset value), there is a fifth leak; if the pressure drop value tested by the fourth leak detector is between 40% of the pressure drop value tested by the third leak detector and 60% of the pressure drop value tested by the third leak detector, there is a sixth leak.
[0052] The above can be used as a judgment method, that is, the waterproof test result of the wearable product 30 can be obtained by external pressurization: when the second condition is met, the wearable product 30 is qualified; when there is a fourth leakage, there is a leakage at the lens 33, and there is no leakage at the display screen 32; when there is a fifth leakage, there is a leakage at the display screen 32, and there is no leakage at the lens 33; when there is a sixth leakage, the first leakage has leakage at both the display screen 32 and the lens 33.
[0053] In order to make the judgment more accurate, in a preferred embodiment of the present invention, the internal pressurization and external pressurization methods are combined for judgment to obtain the waterproof test result of the wearable product 30: when the first condition and the second condition are met at the same time, the wearable product 30 is qualified; when the first leakage and the fourth leakage exist at the same time, there is a leakage at the lens 33, and there is no leakage at the display screen 32; when the second leakage and the fifth leakage exist at the same time, there is a leakage at the display screen 32, and there is no leakage at the lens 33; when the third leakage and the sixth leakage exist at the same time, the first leakage has leakage at both the display screen 32 and the lens 33.
[0054] The present invention provides a wearable product waterproof function detection device and detection method. Compared with the prior art, the present invention has the beneficial effect that: it detects the waterproof function of a wearable product 30 by combining internal pressurization and external pressurization. By placing the wearable product as a whole in a fixture, when internal pressurization is applied, the relationship between the pressure rise of the C port or the pressure rise of the C port and the pressure drop of the B port is used to indirectly measure whether there is a leakage at the display screen. When external pressurization is applied, the relationship between the pressure drop of the C port or the pressure drop of the C port and the pressure drop of the A port is used to indirectly measure whether there is a leakage at the display screen, thereby making an accurate judgment. At the same time, it has a simple structure, low cost, and is easy to popularize.
[0055] The above implementation modes are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.
Claims
1. A wearable product waterproof function detection device, the wearable product comprising a shell, a display screen and a lens, the display screen is installed at the upper end of the shell, the lower end of the shell is provided with an opening, and the lens is installed at a first side of the shell; characterized in that: The detection device comprises an upper fixture, a lower fixture, a blocking device, a first pipeline, a second pipeline and a third pipeline, the upper fixture is installed on the upper side of the lower fixture, a closed accommodation space is formed between the upper fixture and the lower fixture, the wearable product is installed in the accommodation space, the blocking device is used to extend into the accommodation space to block the first side, and the lens is located in the blocking cavity formed by the first side and the blocking device; one end of the first pipeline is connected to the accommodation space, and the other end of the first pipeline extends out of the accommodation space to form a first port; One end of the second pipeline is connected to the cavity of the wearable product through an opening, and the other end of the second pipeline extends out of the cavity of the wearable product to form a second port; one end of the third pipeline extends into the blocking cavity, and the other end of the third pipeline extends out of the blocking cavity to form a third port; The upper fixture comprises an upper fixture body and an annular body, wherein the annular body is located at the lower side of the upper fixture body; the upper fixture body and the annular body are fixedly connected or integrally formed; the lower end of the annular body is installed at the upper side of the lower fixture, and the accommodating space is formed between the annular body and the lower fixture; The lower clamp includes a lower clamp body and a support block located on the upper side of the lower clamp body. The lower clamp body is fixedly connected to or integrally formed with the support block. The support block extends into the accommodating space, and the lower end of the wearable product is supported by the support block.
2. The waterproof function detection device for wearable products according to claim 1, characterized in that: The annular body and the lower clamp are sealed by a first sealing ring.
3. The waterproof function detection device for wearable products according to claim 1, characterized in that: The lower clamp is a hollow structure, and the upper end of the hollow structure extends to the upper end surface of the support block; a seal is provided at the lower end of the wearable product, and the seal and the wearable product form a sealed cavity; one end of the first pipeline passes through the hollow structure and is connected to the accommodating space, and the first port is located on the outside of the lower clamp; one end of the second pipeline passes through the hollow structure and the seal and is connected to the sealed cavity, and the second port is located on the outside of the lower clamp.
4. The waterproof function detection device for wearable products according to claim 3, characterized in that: The sealing member and the lower end of the shell are sealed by a second sealing ring.
5. The waterproof function detection device for wearable products according to any one of claims 2 to 4, characterized in that: The lower end of the upper clamp body is also fixedly connected or integrally formed with a pressing piece, which is located in the annular body and is used to press the upper end of the shell. The display screen is located in a connecting cavity formed by the pressing piece and the shell.
6. The wearable product waterproof function detection device according to claim 5, characterized in that: One end of the first pipeline is communicated with the accommodating space and / or with the connecting cavity.
7. The waterproof function detection device for wearable products according to any one of claims 2 to 4, characterized in that: The detection device also includes an extrusion device, which includes a fixing part and an extrusion part. The fixing part is fixedly installed at the lower end of the upper clamp body, and a guide hole is provided on the fixing part. One end of the sealing device passes through the annular body to seal the first side, and the extrusion part extends into the guide hole to extrude the other end of the sealing device.
8. A method for testing the waterproof function of a wearable product, characterized in that: The waterproof function detection device for wearable products according to any one of claims 1 to 7 is used to implement waterproof detection of wearable products, which includes the following steps: Internal pressurization is used to detect whether the wearable product has air leakage to the outside, and the internal pressurization detection includes the following steps: The opening of the wearable product is sealed by a sealing member, and the first side is sealed by a sealing device; the first port is connected to the external atmosphere, a first leak detector is connected to the second port to detect pressure drop, and a second leak detector is connected to the third port to detect pressure rise; The test result is judged by comparing the pressure drop value tested by the first leak detector: when the pressure drop value is less than or equal to the first preset leakage value, the wearable product meets the first condition; otherwise, the pressure drop value tested by the first leak detector is compared with the pressure rise value tested by the second leak detector. If the difference between the pressure drop value tested by the first leak detector and the pressure rise value tested by the second leak detector is within the first preset range, there is a first leak; if the pressure rise value tested by the second leak detector is less than the first preset value, there is a second leak; if the pressure rise value tested by the second leak detector is between 40% of the pressure drop value tested by the first leak detector and 60% of the pressure drop value tested by the first leak detector, there is a third leak; External pressurization is used to detect whether the wearable product has internal leakage. The external pressurization detection includes the following steps: The opening of the wearable product is sealed by a seal, the first side where the lens is located is not sealed, the second port is connected to the external atmosphere, and the first port is connected to a third leak detector to detect pressure drop; If the pressure drop value tested by the third leak detector is less than the second preset threshold value, the product meets the second condition; otherwise, the pressure drop value tested by the third leak detector is recorded, and the first side is sealed separately through the plugging device, and the fourth leak detector is connected to the third port to detect the pressure drop; if the difference between the pressure drop value tested by the fourth leak detector and the pressure drop value tested by the third leak detector is within the second preset range, there is a fourth leak; if the pressure drop value tested by the fourth leak detector is less than the second preset value, there is a fifth leak; if the pressure drop value tested by the fourth leak detector is between 40% of the pressure drop value tested by the third leak detector and 60% of the pressure drop value tested by the third leak detector, there is a sixth leak; When the first condition and the second condition are met at the same time, the wearable product is qualified; when the first leakage and the fourth leakage exist at the same time, there is leakage at the lens and no leakage at the display screen; when the second leakage and the fifth leakage exist at the same time, there is leakage at the display screen and no leakage at the lens; when the third leakage and the sixth leakage exist at the same time, the first leakage has leakage at both the display screen and the lens.