Universal airtight detection structure

Abstract

The utility model provides a universal airtightness detection structure, comprising a detection tool provided with a storage groove used for storing a to-be-detected member; the rack is provided with a driving piece, and the driving piece is arranged above the storage groove; the air tightness detection head is connected to the output end of the driving part and is provided with an air inlet, an air outlet and a channel used for communicating the air inlet with the air outlet, the shell of the to-be-detected part is provided with an air injection hole corresponding to the air outlet, and the driving part is used for driving the air tightness detection head to move in the vertical direction. Therefore, the airtightness detection head and the to-be-detected piece are in contact with each other or separated from each other. In this way, the to-be-detected piece is stored and fixed through the storage groove, airtightness detection is carried out on the to-be-detected piece through the airtightness detection head, and the purpose of improving the detection efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of detection equipment, especially relates to a general type air tightness detection structure. BACKGROUND

[0002] The electrical components on the related equipment need to be sealed before leaving the factory, so that the electrical components have certain waterproof performance, therefore, before the equipment leaves the factory, the electrical components on the equipment need to be air tightness detected to detect whether the waterproof performance is good, in the related art, the air tightness detection of the electrical components is usually that the electrical components are placed in a closed container and high-pressure air is injected into the closed container, when a certain amount of gas is injected, the air pressure change is observed to determine whether the sealing effect of the electrical components is good, however, the air tightness detection in the way needs to wind and arrange the wire harness connected to the electrical components when the electrical components are placed into the closed container, so that the wire harness is placed in the closed container together with the electrical components, the arrangement process of the wire harness undoubtedly leads to low efficiency of the air tightness detection. SUMMARY

[0003] Therefore, the utility model provides a general type air tightness detection structure to solve the problem of low detection efficiency in the air tightness detection process.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] A general type air tightness detection structure comprises:

[0006] A detection jig has a receiving groove for receiving a to-be-detected piece;

[0007] A rack is installed with a driving piece, and the driving piece is arranged above the receiving groove;

[0008] An air tightness detection head is connected to the output end of the driving piece and has an air inlet, an air outlet and a passage for connecting the air inlet and the air outlet, the housing of the to-be-detected piece is provided with an air injection hole corresponding to the air outlet, and the driving piece is used to drive the air tightness detection head to move in the vertical direction, so that the air tightness detection head and the to-be-detected piece are in contact or separated from each other.

[0009] Further, one end of the air tightness detection head away from the driving piece is provided with a sealing ring, and the sealing ring is arranged outside the air outlet.

[0010] Further, the housing of the to-be-detected piece is provided with a sealing ring groove corresponding to the sealing ring, and the sealing ring groove is arranged outside the air injection hole.

[0011] Further, the universal air tightness detection structure further comprises a carrier table, and the detection tool and the rack are mounted on the mounting position of the carrier table.

[0012] Further, the rack comprises a mounting plate and a supporting column, the driving member is mounted on the mounting plate, and the supporting column is arranged between the mounting plate and the carrier table, so that the driving member mounted on the mounting plate is arranged above the receiving groove.

[0013] Further, the number of the supporting columns is plural.

[0014] Further, the driving member comprises a pneumatic cylinder.

[0015] Further, when the air tightness detection head and the to-be-detected member are in contact with each other, the gas injection hole and the exhaust port are coaxially arranged.

[0016] Compared with the prior art, the universal air tightness detection structure has the following advantages:

[0017] According to the above technical scheme, when the to-be-detected member needs to be detected, the to-be-detected member is placed in the receiving groove of the detection tool, the to-be-detected member is fixed by the receiving groove, and the wire harness of the to-be-detected member does not need to be wound and arranged during the placing process, so as to reduce the placing operation of the detection personnel as much as possible, and the detection efficiency is improved. Then, the driving member mounted on the rack drives the air tightness detection head to move in the vertical direction, when the air tightness detection head and the to-be-detected member are in contact with each other, the exhaust port and the gas injection hole of the to-be-detected member are in communication with each other, the detection gas can be discharged into the housing of the to-be-detected member through the gas injection hole, and then whether the waterproof performance is good or not is determined by detecting whether the air pressure changes or not. Similarly, the driving member can be used to separate the air tightness detection head from the to-be-detected member, the detected to-be-detected member is removed from the receiving groove, and the next to-be-detected member is detected. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein for reference. The embodiments of the application and the description thereof are used to explain the application without imposing any undue limitations. In the drawings:

[0019] Figure 1 FIG. 1 is a structural schematic view of a universal air tightness detection structure according to an embodiment of the application;

[0020] Figure 2 FIG. 2 is a structural schematic view of a to-be-detected member according to an embodiment of the application;

[0021] Figure 3The structure schematic diagram of the airtight detection head.

[0022] Mark explanation:

[0023] 1, detection tool; 101, storage groove; 2, rack; 201, mounting plate; 202, support column; 3, airtight detection head; 301, air inlet; 302, air outlet; 4, driving piece; 5, to be detected piece; 501, air injection hole; 502, sealing ring groove; 503, embedding groove; 6, sealing ring; 7, object table. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the utility model creation and the features in the embodiments can be combined with each other without conflict.

[0025] In the description of the utility model creation, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model creation and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model creation. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model creation, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] In the description of the utility model creation, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model creation can be understood through specific circumstances.

[0027] The utility model creation will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] For some devices applied outdoors, some electrical components contained therein should have a certain waterproof level to meet the requirements of normal operation of the devices applied outdoors in rainy weather, for example, the lamps and instruments of two-wheeled or three-wheeled electric vehicles, and the like. In the related art, the waterproof performance detection of the electrical components can be carried out by air tightness detection, that is, the electrical components are placed in a closed container, and then gas is injected into the closed container. After a certain amount of gas is injected, the change of air pressure is observed to determine whether the sealing effect of the electrical components is good. However, in the actual detection process, since the closed container includes a base and an upper cover, the base and the upper cover are attached together to form a sealed cavity for accommodating the electrical components. Therefore, during the process of placing the electrical components into the closed container, the wire harness connected to the electrical components (the electrical components are usually connected to an external system to transmit electrical signals or power through the wire harness) needs to be wound and arranged to prevent the wire harness from affecting the attachment of the base and the upper cover (the wire harness may be scattered when the electrical components enter the sealed container. If not arranged, the wire harness may be stuck between the base and the upper cover, resulting in that the sealed cavity cannot be completely closed). This requires the detection personnel to manually wind and arrange the wire harness before each detection to ensure that the wire harness is arranged neatly and does not interfere with the sealing. This increases the operation steps and time cost. Meanwhile, when the number and length of the wire harness of the electrical components are large, the burden of the detection personnel is further increased. In addition, the wire harness arrangement process may also cause inconsistency due to human factors, affecting the stability and reliability of the detection results. Therefore, the winding and arrangement of the wire harness will inevitably lead to low efficiency of the air tightness detection operation.

[0029] Therefore, in the specific embodiment of the utility model, a universal air tightness detection structure is provided, as shown in Figures 1 to 3 The universal air tightness detection structure includes a detection jig 1, a rack 2, and an air tightness detection head 3. The detection jig 1 includes a receiving groove 101 for accommodating a detection piece 5. The rack 2 is provided with a driving member 4 above the receiving groove 101. The air tightness detection head 3 is connected to the output end of the driving member 4 and has a gas inlet 301, an exhaust port 302, and a passage for connecting the gas inlet 301 and the exhaust port 302. The shell of the detection piece 5 is provided with a gas injection hole 501 corresponding to the exhaust port 302. The driving member 4 is used to drive the air tightness detection head 3 to move in the vertical direction, so that the air tightness detection head 3 and the detection piece 5 are in contact or separated from each other.

[0030] Through the technical scheme, when air tightness detection is needed, the to-be-detected piece 5 is placed in the receiving groove 101 of the detection jig 1, the to-be-detected piece 5 is received and fixed by the receiving groove 101, and the wire harness of the to-be-detected piece 5 does not need to be wound and arranged during the placing process, so as to reduce the placing operation of the detection personnel as much as possible, and the detection efficiency is improved. Then, the driving piece 4 installed on the rack 2 drives the air tightness detection head 3 to move in the vertical direction. When the air tightness detection head 3 and the to-be-detected piece 5 are in contact with each other, the exhaust port 302 and the gas injection hole 501 of the to-be-detected piece 5 are in communication with each other. The detection gas can be discharged into the housing of the to-be-detected piece 5 through the gas injection hole 501. Then, whether the waterproof performance is good or not is determined by whether the detection gas pressure changes or not. Similarly, the driving piece 4 can be driven again to separate the air tightness detection head 3 from the to-be-detected piece 5. After separation, the detected to-be-detected piece is removed from the receiving groove 101, and the next to-be-detected piece 5 is detected.

[0031] In some embodiments, with reference to Figure 1 and Figure 3 As shown, the end of the air tightness detection head 3 away from the driving piece 4 is provided with a sealing ring 6. The sealing ring 6 is arranged around the outside of the exhaust port 302. When air tightness detection is needed, the driving piece 4 drives the air tightness detection head 3 to move, so that the air tightness detection head 3 gradually moves towards the to-be-detected piece 5 and finally contacts and fits with each other. At this time, the gas injection hole 501 provided on the housing of the to-be-detected piece 5 is in communication with the exhaust port 302 on the air tightness detection head 3. The air tightness detection head 3 is connected with a gas guide pipe for conveying gas at the air inlet 301. The gas enters the housing of the to-be-detected piece 5 in sequence through the air inlet 301, the passage, the exhaust port 302 and the gas injection hole 501, so as to inflate the inside of the to-be-detected piece 5. After a period of inflation, whether the waterproof performance of the to-be-detected piece 5 is good or not can be determined by monitoring the values fed back by the sensor. If the gas pressure does not change as expected, it means that the to-be-detected piece 5 has good sealing performance and the waterproof performance meets the standard. If the gas pressure decreases, it means that the to-be-detected piece 5 has a leakage point and the waterproof performance is insufficient. During the gas injection process, the main function of the sealing ring 6 is to prevent gas leakage. When the air tightness detection head 3 and the to-be-detected piece 5 contact each other, the sealing ring 6 can form an effective sealing barrier on the contact surface of the air tightness detection head 3 and the to-be-detected piece 5, so as to prevent the gas from overflowing from the gap between the air tightness detection head 3 and the to-be-detected piece 5, and ensure that the gas can flow smoothly into the to-be-detected piece 5 through the gas injection hole 501, so as to ensure the accuracy of the detection process and enable the monitoring sensor to accurately feed back the air tightness detection result.

[0032] Meanwhile, the sealing ring 6 is made of durable materials, such as rubber. That is, considering its adaptability when in contact with different types of test pieces 5, the rubber sealing ring 6 can effectively seal the gap between the airtightness detection head 3 and the test piece 5, preventing inaccurate test results due to poor airtightness.

[0033] In some implementations, reference Figure 2 and Figure 3 As shown, the housing of the component to be tested 5 is provided with a sealing ring groove 502 corresponding to the sealing ring 6. The sealing ring groove 502 is arranged around the outside of the air injection hole 501. That is, during the air tightness test, when the air tightness test head 3 approaches and contacts the component to be tested 5, the sealing ring 6 is pressed into the sealing ring groove 502. The combination of the sealing ring 6 and the sealing ring groove 502 will form an effective sealing area, which further ensures that the gas will not overflow from the gap between the air tightness test head 3 and the component to be tested 5, thereby ensuring the accuracy of the test results.

[0034] In some implementations, reference Figure 1 As shown, it also includes a stage 7, wherein the testing fixture 1 and the frame 2 are installed on the mounting position of the stage 7. That is, the stage 7 provides support for the part to be tested 5, the testing fixture 1 and the frame 2, ensuring the stability and accuracy of the entire testing process, ensuring that the part to be tested 5 will not be displaced or tilted during the gas injection and airtightness testing process, and reducing the interference of external factors on the test results.

[0035] Meanwhile, the shape and structure of the inspection fixture 1 can be customized according to different shapes and types of test pieces 5, thereby adapting to products of various sizes and types and improving the versatility of the inspection structure.

[0036] In some implementations, reference Figure 1 As shown, the frame 2 includes a mounting plate 201 and a support column 202. A drive component 4 is mounted on the mounting plate 201, and the support column 202 is positioned between the mounting plate 201 and the platform 7, so that the drive component 4 mounted on the mounting plate 201 is positioned above the storage slot 101. That is, the mounting plate 201 is mounted on the platform 7 via the support column 202, thereby allowing the drive component 4 mounted on the mounting plate 201 to be positioned above the storage slot 101. The drive component 4 then controls the movement of the airtightness detection head 3. When the airtightness detection head 3 comes into contact with the part to be tested 5, air can be injected into the interior of the part to be tested 5. The waterproof performance of the part to be tested 5 is then determined by monitoring the changes in the sensor values. To ensure that the drive component 4 is mounted more stably on the mounting plate 201, multiple support columns 202 can be used. One end of each support column 202 is connected to the upper surface of the mounting position, and the other end is connected to the lower surface of the mounting plate 201. For example, refer to... Figure 1As shown, the number of support columns 202 is four, and the four support columns 202 are respectively located at the corner parts of the mounting plate 201, thereby providing stable support for the mounting plate 201 and the driving member 4 placed on the mounting plate 201, ensuring that the driving member 4 can always maintain a stable position and perform precise control actions, avoiding detection errors caused by vibration or instability.

[0037] At the same time, the driving member 4 is stably and firmly placed on the mounting plate 201, which can effectively control the movement of the air-tightness detection head 3, so that the air-tightness detection head 3 can accurately butt joint the gas injection hole 501 and the sealing ring groove 502 of the to-be-detected member 5, ensuring the sealing property and the stability of gas flow, and improving the accuracy of detection.

[0038] For example, when the air-tightness detection head 3 and the to-be-detected member 5 are in contact with each other, the gas injection hole 501 is coaxially arranged with the exhaust port 302, that is, the coaxial arrangement of the gas injection hole 501 and the exhaust port 302 can ensure that the gas enters the gas injection hole 501 from the exhaust port 302 of the air-tightness detection head 3 in the shortest and most direct path, avoiding pressure loss or leakage caused by path deviation during gas flow.

[0039] Moreover, after the air-tightness detection head 3 contacts the to-be-detected member 5 through the driving member 4, an effective sealing area is formed between the driving member 4 and the to-be-detected member 5 under the cooperation of the sealing ring 6 and the sealing ring groove 502, and the coaxial arrangement of the gas injection hole 501 and the exhaust port 302 ensures that the gas can quickly enter the inside of the to-be-detected member 5 through a straight-line path without being disturbed by directional deviation or flow resistance, improving the gas injection efficiency and thus improving the overall detection efficiency.

[0040] In some embodiments, with reference to Figure 1 The driving member 4 includes a pneumatic cylinder, that is, the air-tightness detection head 3 is mounted on the output rod of the pneumatic cylinder, and the pneumatic cylinder controls the movement of the output rod to drive the air-tightness detection head 3 to move synchronously along the vertical direction for reciprocating movement, so that the air-tightness detection head 3 and the to-be-detected member 5 are in contact with each other or separated from each other.

[0041] For example, the driving member 4 can also include an electric push rod, and similarly, if an electric push rod is used to control the air-tightness detection head 3 to move reciprocally along the vertical direction, the air-tightness detection head 3 should be mounted on the output shaft of the electric push rod at this time, and the driving member 4 can also use a linear module driven by a stepping motor or a servo motor, or a hydraulic cylinder to drive the air-tightness detection head 3 to move.

[0042] In some embodiments, when the detected detection piece is a qualified product, in order to prevent water from flowing from the gas injection hole 501 to the inside of the detection piece during actual use, an embedded groove 503 can be provided on the shell, the center of the embedded groove 503 is provided with a gas injection hole 501, and a waterproof and breathable film can be attached in the embedded groove 503, so as to prevent water from flowing into the detection piece from the gas injection hole 501, that is, the embedded groove 503 can provide a stable installation position for the waterproof and breathable film, so that the waterproof and breathable film is attached in the embedded groove 503 and covers the gas injection hole 501, while ensuring the breathability (during actual use, the various electrical elements inside the detection piece will generate heat, part of the hot gas can be discharged from the detection piece through the gas injection hole 501, which can balance the pressure difference between the inside and outside while quickly dissipating the heat released by the electrical elements, prolonging the service life of the detection piece).

[0043] The air tightness detection structure is used as follows: the detection piece 5 to be detected is placed in the receiving groove 101 of the detection jig 1, and then the driving piece 4 is started to control the air tightness detection head 3 to move in the vertical direction, so that the air tightness detection head 3 and the detection piece 5 to be detected are in contact with each other. At this time, the sealing ring 6 on the air tightness detection head 3 is at least partially embedded into the sealing ring groove 502 to ensure that the air tightness detection head 3 and the detection piece 5 to be detected have good sealing property, prevent gas from overflowing from the gap between the air tightness detection head 3 and the detection piece 5 to be detected, and ensure that the gas can flow smoothly into the inside of the detection piece 5 to be detected, ensuring the accuracy of the detection process, so that the monitoring sensor can accurately feedback the air tightness detection result; after the detection is completed, the driving piece 4 is started again to control the air tightness detection head 3 to move in the vertical direction, so that the air tightness detection head 3 and the detection piece 5 to be detected are separated from each other. After separation, the detection piece in the receiving groove 101 that has been detected is removed, the detection piece 5 to be detected is placed in the receiving groove 101 and the above steps are repeated to perform a new round of detection operation.

[0044] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A general-purpose air tightness detection structure characterized by comprising: The utility model relates to a detection tool (1) for detecting the air tightness of a product (5), which comprises: a detection tool (1) having a receiving groove (101) for receiving a product (5) to be detected; a rack (2) having a driving member (4) installed thereon, wherein the driving member (4) is arranged above the receiving groove; an air tightness detection head (3) connected to the output end of the driving member (4) and having an air inlet (301), an air outlet (302) and a passage for connecting the air inlet (301) and the air outlet (302), wherein the product (5) to be detected is provided with an air injection hole (501) corresponding to the air outlet (302), and the driving member (4) is used to drive the air tightness detection head (3) to move in the vertical direction so as to make the air tightness detection head (3) and the product (5) to be detected contact or separate from each other.

2. The universal air tightness detection structure according to claim 1, wherein: The air tightness detection head (3) is provided with a sealing ring (6) at one end away from the driving member (4), and the sealing ring (6) is arranged around the outside of the air outlet (302).

3. A universal leak detection structure according to claim 2, wherein: The product (5) to be detected is provided with a sealing ring groove (502) corresponding to the sealing ring (6) on the shell, and the sealing ring groove (502) is arranged around the outside of the air injection hole (501).

4. The universal leak detection structure of claim 1, wherein: Further comprising a stage (7) having a mounting position for mounting the detection tool (1) and the rack (2).

5. A universal leak detection structure according to claim 4, wherein: The rack (2) comprises a mounting plate (201) and a support column (202), wherein the driving member (4) is mounted on the mounting plate (201), and the support column (202) is arranged between the mounting plate (201) and the stage (7) so that the driving member (4) mounted on the mounting plate (201) is arranged above the receiving groove.

6. A universal leak detection structure according to claim 5, wherein: The number of the support columns (202) is plural.

7. The universal leak detection structure of claim 1, wherein: The driving member (4) comprises a pneumatic cylinder.

8. The universal leak detection structure of claim 1, wherein: When the air tightness detection head (3) and the product (5) to be detected contact each other, the air injection hole (501) and the air outlet (302) are coaxially arranged.

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