Air tightness inspection jig
By designing a tensioning mechanism in the airtightness inspection fixture, the problem of poor sealing performance in the prior art is solved, the sealing between the down plate and the product to be tested is improved, and the accuracy of airtightness detection is ensured.
Patent Information
- Application Number
- CN202422295988.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing airtightness inspection fixtures have poor sealing performance when sealing products, resulting in air leakage and affecting the product's airtightness detection results.
An airtightness inspection fixture is designed, including a frame, an upper pressure plate, a lower pressure plate and a ventilation assembly. By setting a tensioning mechanism on the upper pressure plate, a downward pulling force is provided, so that the seal between the lower pressure plate and the product to be tested is stronger.
By adding a tensioning mechanism, the sealing between the upper and lower pressure plates is improved, and the air leakage of the product to be tested is avoided in the airtightness test, ensuring the accuracy of the detection results.
Smart Images
Figure CN223037322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of detection equipment, in particular to a detection equipment in the technical field. Background Art
[0002] For the plastic shells of some electronic products or products with waterproof or airtightness requirements, it is impossible to accurately judge whether the cracks on the products have an impact on their performance. There is a process of connecting a leak detector to detect the change of air pressure to determine whether there is a leakage of fine holes. However, when the existing airtightness inspection fixture seals the product for detection, there is a phenomenon of poor sealing performance, resulting in air leakage, which will affect the result of the airtightness detection of the product.
[0003] Therefore, in order to solve the problem of poor sealing performance when the airtightness inspection fixture seals the product, there is an urgent need for an airtightness inspection fixture with good sealing performance to solve the above problems. Summary of the Utility Model
[0004] The utility model aims to provide a technical solution to solve the above problems in order to overcome the above deficiencies.
[0005] The specific scheme is as follows: An airtightness inspection fixture includes a frame body, an upper pressure plate slidably connected to the frame body, a lower pressure plate disposed opposite to the upper pressure plate, and a ventilation component. The product to be tested is placed on the lower pressure plate, and the product to be tested is formed with a cavity. The lower pressure plate seals and covers the cavity, and the upper pressure plate presses the product to be tested located on the lower plate tightly; the ventilation component is communicated with the cavity, wherein:
[0006] A first mounting bracket is provided on the lower pressure plate, and both sides of the upper pressure plate are slidably connected to the first mounting bracket; a second mounting bracket is provided on the top of the upper pressure plate, and a tensioning mechanism for pulling the upper pressure plate downward is provided on the second mounting bracket, so that the upper pressure plate presses down and presses the lower pressure plate tightly.
[0007] Preferably, the tensioning mechanism includes a base fixedly connected to the upper part of the second mounting bracket and a hook. The hook is reversely arranged on the first mounting bracket, a tensioning arm is rotatably connected to the base, and the hook is hooked to the tensioning arm.
[0008] Preferably, a buffer mechanism is further provided on the first mounting bracket. The buffer mechanism includes a guide post and a spring sleeved on the guide post. The spring is sleeved on the guide post; a limiting plate is fixedly connected to the second bracket, the limiting plate is located above the first mounting bracket and is formed with a hole for the guide post to pass through, and a guide sleeve is arranged on the hole, and the guide sleeve is sleeved on the guide post; one end of the spring abuts against the lower pressure plate, and the other end abuts against the limiting plate.
[0009] Preferably, the tension arm is designed in a U shape.
[0010] Preferably, two hooks are provided.
[0011] Preferably, the first mounting bracket includes two symmetrically arranged side frames and a cross beam connecting the two side frames. Chutes are provided on the side frames, and sliders are fixedly connected to both sides of the upper pressure plate. The sliders are slidably connected to the chutes.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] The airtightness inspection jig of the present application is additionally provided with a tensioning mechanism, which can provide a downward pulling force on the upper pressure plate, making the connection between the lower pressure plate and the upper pressure plate firmer. At the same time, under the action of the tensioning mechanism, the upper pressure plate can press the product to be tested, improving the sealing performance of the connection between the lower pressure plate and the product to be tested, and avoiding air leakage in the cavity of the product to be tested during the airtightness test.
[0014] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 is one of the overall structural schematic diagrams of an airtightness inspection jig of the present utility model;
[0017] Figure 2 is the second of the overall structural schematic diagrams of an airtightness inspection jig of the present utility model;
[0018] Figure 3 is the overall structural schematic diagram of the pressing mechanism in the present utility model;
[0019] Figure 4 is the schematic diagram of the positional relationship of the product to be tested when the upper pressure plate and the lower pressure plate of an airtightness inspection jig of the present utility model are connected. Detailed Embodiments
[0020] The technical solutions in the embodiments of the present utility model will be described clearly and completely below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figure 1 and in combination with Figure 2 、 Figure 3 and Figure 4 As shown in the figure, in the embodiment of the present utility model, an airtightness inspection fixture includes an upper pressing plate 2 slidably connected to a frame body, a lower pressing plate 1 disposed opposite to the upper pressing plate 2, and a ventilation assembly. A product 100 to be tested is placed on the lower pressing plate 1, and the product 100 to be tested is formed with a cavity 101. The lower pressing plate 1 hermetically covers the cavity 101, and the upper pressing plate 2 presses the product 100 to be tested located on the lower plate tightly; the ventilation assembly is communicated with the cavity 101, wherein:
[0022] A first mounting bracket 11 is provided on the lower pressing plate 1, and both sides of the upper pressing plate 2 are slidably connected to the first mounting bracket 11; a second mounting bracket 21 is provided on the top of the upper pressing plate 2, and a tensioning mechanism 22 for pulling the upper pressing plate 2 downward is provided on the second mounting bracket 21, so that the upper pressing plate 2 presses down and tightly presses the lower pressing plate 1.
[0023] Furthermore, the tensioning mechanism 22 includes a base 221 fixedly connected to the upper part of the second mounting bracket 21 and a hook 222. The hook 222 is reversely arranged on the first mounting bracket 11, and a tensioning arm 223 is rotatably connected to the base 221. The hook 222 is hooked to the tensioning arm 223.
[0024] Furthermore, a buffer mechanism 12 is further provided on the first mounting bracket 11. The buffer mechanism 12 includes a guide post and a spring sleeved on the guide post. The spring is sleeved on the guide post; a limiting plate is fixedly connected to the second bracket 21. The limiting plate is located above the first mounting bracket 11 and is formed with a hole for the guide post to pass through. A guide sleeve is provided on the hole, and the guide sleeve is sleeved on the guide post; one end of the spring abuts against the lower pressing plate 1, and the other end abuts against the limiting plate. Accordingly, when the upper pressing plate moves downward, the spring is compressed by force, playing a buffering role in the downward movement of the upper pressing plate.
[0025] Furthermore, the tensioning arm 223 is designed in a U shape.
[0026] Furthermore, two hooks 222 are provided.
[0027] Further, the first mounting bracket 11 includes two symmetrically arranged side frames 2211 and a cross beam 2212 connecting the two side frames 2211. A sliding groove 2213 is formed on the side frame 2211. Both sides of the upper pressing plate 2 are fixedly connected with sliders, and the sliders are slidably connected with the sliding groove 2213.
[0028] The working principle of this application is as follows: A sealing boss is provided on the lower pressing plate 1. When the product to be tested 100 is placed upside down on the lower pressing plate 1, its cavity 101 covers the sealing table, and the cavity 101 and the sealing table are hermetically connected through a sealing strip.
[0029] The operator controls the upper pressing plate 2 to move downward along a preset direction so that the product to be tested 100 is located in the cavity of the upper pressing plate 2. Then, the tensioning arm 223 is rotated downward to be hooked to the hook 222 on the lower pressing plate 1. At this time, the tensioning arm 223 generates a downward pulling force on the upper pressing plate 2, so that the upper pressing plate 2 can be more tightly pressed on the lower pressing plate 1, and at the same time, the product to be tested 100 is also pressed on the lower pressing plate 1 to improve its sealing performance. Then, the air supply assembly fills compressed air into the cavity 101 of the product to be tested 100 through the reserved air inlet, and then uses the detection equipment to observe whether the sealing performance of the product to be tested 100 meets the standard.
[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model.
Claims
1. An airtightness inspection jig, comprising a frame, an upper pressing plate slidably connected to the frame, a lower pressing plate arranged opposite to the upper pressing plate, and a venting assembly, wherein a product to be tested is placed on the lower pressing plate, and a cavity is formed on the product to be tested, the lower pressing plate seals and covers the cavity, and the upper pressing plate presses the product to be tested located on the lower pressing plate; the venting assembly is connected to the cavity, and is characterized in that: A first mounting bracket is provided on the lower pressing plate, and both sides of the upper pressing plate are slidably connected to the first mounting bracket; a second mounting bracket is provided on the top of the upper pressing plate, and a tensioning mechanism for pulling the upper pressing plate downward is provided on the second mounting bracket, so that the upper pressing plate presses down and compresses the lower pressing plate.
2. The airtightness inspection jig according to claim 1, characterized in that: The tensioning mechanism comprises a base fixedly connected to the upper part of the second mounting bracket and a hook, the hook is invertedly arranged on the first mounting bracket, a tensioning arm is rotatably connected to the base, and the hook is hooked to the tensioning arm.
3. The airtightness inspection jig according to claim 1, characterized in that: The first mounting bracket also has a buffer mechanism, which includes a guide column and a spring sleeved on the guide column, and the spring is sleeved on the guide column; the second mounting bracket is fixedly connected to a limit plate, the limit plate is located above the first mounting bracket and is formed with a hole for the guide column to pass through, the hole is provided with a guide sleeve, and the guide sleeve is sleeved on the guide column; one end of the spring is in contact with the lower pressure plate, and the other end is in contact with the limit plate.
4. The airtightness inspection jig according to claim 2, characterized in that: The tensioning arm is U-shaped.
5. The airtightness inspection jig according to claim 2, characterized in that: There are two hooks.
6. The airtightness inspection jig according to claim 1, characterized in that: The first mounting bracket includes two symmetrically arranged side frames and a crossbeam connecting the two side frames. A sliding groove is provided on the side frame. Slide blocks are fixedly connected to both sides of the upper pressure plate. The slide blocks are slidably connected to the sliding groove.