Cable threading structure and environmental test box

Abstract

The utility model belongs to the technical field of electrical assembly, and discloses a cable threading structure and an environmental test box. The environment test box comprises a box body and a cable threading structure, the cable threading structure comprises a threading piece, a fixing assembly and a blocking assembly, the threading piece is provided with a threading hole penetrating through the first side wall and the second side wall of the threading piece, a cable can penetrate through the threading hole, the inner wall of the threading hole is provided with a heat insulation piece, the fixing assembly comprises a first fixing piece, a second fixing piece and an attaching piece, and the attaching piece is fixedly connected with the fixing assembly. The first fixing piece and the second fixing piece can be buckled with each other, at least one of the first fixing piece and the second fixing piece is fixedly arranged on the first side wall, the threading hole can be blocked when the first fixing piece and the second fixing piece are buckled, the attaching pieces oppositely arranged on the first fixing piece and the second fixing piece can deform and fix a cable, and the blocking assembly is arranged on the second side wall and used for blocking airflow or impurities from passing through the threading hole. The threading piece is arranged to be a wall face of the box body, and a cable can penetrate into or out of the box body through the cable threading structure. The problems of heat accumulation, air leakage, condensation and signal interference can be solved, and the test reliability of the environment test box is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical assembly technology, and in particular to cable threading structure and environmental testing chamber. Background Technology

[0002] When conducting tests in an environmental test chamber, the wiring structure of the internal and external cables plays a crucial role in ensuring the stability and accuracy of the tests.

[0003] Currently, the cable routing design involves creating multiple circular holes on the side walls of the environmental test chamber. In one scenario, each cable has its own dedicated circular hole, requiring numerous holes on the side walls, which weakens the structural strength of the side walls and affects the overall stability of the environmental test chamber. In another scenario, multiple cables pass through the same circular hole. In high-temperature environments, the cables are compressed within a confined space, hindering heat dissipation and easily leading to heat buildup. Air leakage at the hole can also occur, causing an imbalance in the internal gas environment of the environmental test chamber. In low-temperature environments, condensation can form at the hole, potentially causing short circuits and serious safety accidents. Furthermore, when multiple signal cables pass through the same hole, the signals can interfere with each other, affecting the accuracy of the environmental test chamber's test results.

[0004] Therefore, there is an urgent need for cable routing structures and environmental testing chambers to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a cable threading structure that can solve the problems of heat accumulation, air leakage, condensation and signal interference caused by multiple cables passing through the same threading hole, thereby improving the accuracy and safety of environmental test chamber testing.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A cable threading structure includes: a threading member having a first sidewall and a second sidewall, a threading hole penetrating the first sidewall and the second sidewall, the threading hole being capable of threading a cable, and a heat-insulating element provided on the inner wall of the threading hole; a fixing assembly including a first fixing member, a second fixing member, and a fitting member, the first fixing member and the second fixing member being capable of interlocking, and at least one of them being fixed to the first sidewall, both the first fixing member and the second fixing member being provided with the fitting member, and the fitting member on the first fixing member being disposed opposite to the fitting member on the second fixing member, the first fixing member and the second fixing member being able to block the threading hole when interlocked, and the fitting member being able to deform and fix the cable; and a blocking assembly disposed on the second sidewall and configured to block airflow or impurities from passing through the threading hole.

[0008] As an alternative, the threading hole can be rectangular.

[0009] As an alternative, the bonding element is made of an elastic material; or, the bonding element is made of a foam material.

[0010] As an optional solution, the cable threading structure also includes a seal and a fastener. The first fixing member has a first outward flange in the circumferential direction. The seal is sandwiched between the first outward flange and the first sidewall. The fastener passes through the first outward flange and the seal and is fixedly connected to the first sidewall.

[0011] As an optional solution, the cable threading structure also includes an insulation component, which is provided inside both the first fixing component and the second fixing component.

[0012] As an alternative, the second fastener is provided with a hook and the first fastener is provided with a buckle, and the hook can be fastened to the buckle; or, the first fastener is provided with the hook and the second fastener is provided with the buckle, and the hook can be fastened to the buckle.

[0013] As an alternative, the blocking assembly includes a frame and a baffle. The frame is fixed to the second sidewall and has a through hole that communicates with the wire hole. The baffle is disposed on the frame and can block the through hole, allowing the cable to pass through the baffle.

[0014] As an alternative, the baffle brush includes a first brush and a second brush, the first ends of which are connected to the frame, and the second ends of which intersect and are inserted into each other.

[0015] As an optional solution, the blocking component also includes a scratch-resistant part, which includes a main body and an outwardly folded part. One end of the main body is connected to the inner wall of the through hole, and the other end is connected to the outwardly folded part. The extension direction of the outwardly folded part forms a preset angle with the cable insertion direction.

[0016] Another objective of this invention is to provide an environmental test chamber that employs the aforementioned cable routing structure. This structure can maintain the stability of the chamber, reduce problems such as heat accumulation, air leakage, condensation, and short circuits in the cables, reduce signal interference between cables, ensure environmental stability within the test chamber, and improve the accuracy and reliability of test results.

[0017] To achieve this objective, the present invention adopts the following technical solution:

[0018] An environmental test chamber includes a chamber body and a cable threading structure, wherein the cable threading component of the cable threading structure is set as a wall of the chamber body, and the cable can pass through the cable threading structure into or out of the chamber body.

[0019] Beneficial effects:

[0020] This utility model provides a cable threading structure. In use, the cable passes through the threading hole of the threading component. A heat-insulating component on the inner wall of the threading hole provides heat insulation. A first fixing component is fixedly installed on the first side wall of the threading component. A second fixing component and its fitting component are positioned opposite each other. When the second fixing component and the first fixing component are engaged, they simultaneously seal the threading hole. The fitting component deforms according to the shape of the cable and fixes the cable. A blocking component is provided on the second side wall of the threading component to effectively prevent airflow or impurities from passing through the threading hole. This cable threading structure can solve the problems of heat accumulation, air leakage, condensation, and signal interference caused by multiple cables passing through the same threading hole, improving the accuracy and safety of environmental test chambers.

[0021] The present invention provides an environmental test chamber that adopts the above-mentioned cable threading structure. The cable threading component of the cable threading structure is set as a wall of the chamber. The cable can pass through the cable threading structure into or out of the chamber, which can maintain the stability of the chamber structure, reduce problems such as heat accumulation, air leakage, condensation and short circuit of the cable, reduce signal interference between the cables, ensure the stability of the environment inside the environmental test chamber, and improve the accuracy and reliability of the test results. Attached Figure Description

[0022] Figure 1 This is a first schematic diagram of the cable threading structure provided in this embodiment of the utility model;

[0023] Figure 2 This is a second schematic diagram of the cable threading structure provided in this embodiment of the utility model;

[0024] Figure 3 This is a third schematic diagram of the cable threading structure provided in this embodiment of the utility model;

[0025] Figure 4 This is a fourth schematic diagram of the cable threading structure provided in this embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the blocking component provided in an embodiment of the present utility model.

[0027] In the diagram: 1. Threading component; 11. Threading hole; 111. Thermal insulation component; 12. First sidewall; 13. Second sidewall; 2. Fixing assembly; 21. First fixing component; 211. First outward flange; 22. Second fixing component; 221. Second outward flange; 23. Fitting component; 24. Hook; 25. Buckle; 3. Blocking assembly; 31. Frame; 311. Through hole; 32. Brush baffle; 321. First brush; 322. Second brush; 33. Scratch-resistant component; 331. Main body; 332. Outward flange; 4. Sealing component; 5. Thermal insulation component. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in 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.

[0032] This embodiment provides a cable threading structure and an environmental test chamber. The environmental test chamber includes a chamber body (not shown) and the cable threading structure of this embodiment. The threading component 1 of the cable threading structure is set as a wall of the chamber body, allowing cables to pass through the cable threading structure into or out of the chamber. This ensures convenient cable entry and exit from the chamber, reduces threading difficulty, improves threading efficiency, maintains a clean test environment inside the chamber, and ensures accurate and reliable test data. This cable threading structure also effectively protects the cables, avoiding wear caused by frequent threading and chamber opening and closing, extending cable lifespan, reducing maintenance costs, and ensuring long-term stable operation of the environmental test chamber.

[0033] like Figures 1-4 As shown, the cable threading structure provided in this embodiment includes a threading component 1, a fixing component 2, and a blocking component 3. The threading component 1 has a first sidewall 12 and a second sidewall 13. The threading component 1 is provided with a threading hole 11 that passes through the first sidewall 12 and the second sidewall 13. The threading hole 11 can thread a cable through it. The inner wall of the threading hole 11 is provided with a heat insulation component 111. The fixing component 2 includes a first fixing component 21, a second fixing component 22, and a fitting component 23. The first fixing component 21 and the second fixing component 22 can be connected to each other. The two fasteners 21 and 22 are interlocked, with at least one fixed to the first side wall 12. Both fasteners 21 and 22 have fitting parts 23, with the fitting parts 23 on the first and second fasteners 21 facing each other. When the fasteners 21 and 22 are engaged, they can block the cable hole 11, and the fitting parts 23 can deform and fix the cable. The blocking component 3 is located on the second side wall 13 to block airflow or impurities from passing through the cable hole 11. The heat insulation component 111 on the inner wall of the cable hole 11 reduces heat transfer in both high and low temperature environments, preventing heat accumulation, condensation, and air leakage or short circuits. The fasteners 21 and 22 of the fastening component 2 engage, and the fitting parts 23 fix the cable, ensuring a reasonable cable distribution, reducing mutual compression, and facilitating heat dissipation. The blocking component 3 blocks airflow and impurities, maintaining a stable gas environment inside the chamber and improving the accuracy of test results.

[0034] This embodiment provides a cable threading structure. In use, the cable passes through the threading hole 11 of the threading member 1. The heat-insulating component 111 on the inner wall of the threading hole 11 provides heat insulation. A first fixing member 21 is fixedly installed on the first side wall 12 of the threading member 1. The fitting component 23 of the second fixing member 22 is positioned opposite to the fitting component 23 of the first fixing member 21. When the second fixing member 22 and the first fixing member 21 are engaged, the threading hole 11 is simultaneously blocked. The fitting component 23 deforms according to the shape of the cable and fixes the cable. A blocking component 3 is provided on the second side wall 13 of the threading member 1, which can effectively block airflow or impurities from passing through the threading hole 11. This cable threading structure can solve the problems of heat accumulation, air leakage, condensation, and signal interference caused by multiple cables passing through the same threading hole 11, improving the accuracy and safety of environmental test chamber testing.

[0035] This embodiment provides an environmental test chamber that uses the above-mentioned cable threading structure. The cable threading component 1 of the cable threading structure is set as a wall of the chamber. Cables can pass through the cable threading structure into or out of the chamber, which can maintain the stability of the chamber structure, reduce problems such as cable heat accumulation, air leakage, condensation and short circuit, reduce signal interference between cables, ensure the stability of the environment inside the environmental test chamber, and improve the accuracy and reliability of test results.

[0036] In this embodiment, the first sidewall 12 faces the outside of the chamber, and the second sidewall 13 faces the inside of the chamber. While ensuring neat cable routing, the cable routing structure effectively isolates the internal and external environments of the environmental test chamber, preventing external impurities from entering the chamber and blocking the conduction of hot and cold air currents from the chamber to the outside.

[0037] In this embodiment, the first fixing member 21 is fixedly mounted on the first side wall 12, and the second fixing member 22 is rotatably connected to the first fixing member 21 via a hinge, enabling them to engage with each other. In other embodiments, the second fixing member 22 is fixedly mounted on the first side wall 12, and the first fixing member 21 is rotatably connected to the second fixing member 22 via a hinge, enabling them to engage with each other. In still some embodiments, after the cable passes through the cable hole 11, the first fixing member 21 and the second fixing member 22 clamp the cable and are both fixedly connected to the first side wall 12. Optionally, a fastener passes through the first fixing member 21 and is fixedly connected to the first side wall 12, and a fastener passes through the second fixing member 22 and is fixedly connected to the first side wall 12. When the cable needs to be replaced, the first fixing member 21 and the second fixing member 22 can be disassembled by removing the fasteners.

[0038] like Figures 1-4 As shown, the cable guide hole 11 is a rectangular cable guide hole. On the one hand, the rectangular cable guide hole allows multiple cables to be laid evenly, reducing the possibility of cables tangling and facilitating subsequent maintenance and management. On the other hand, this even cable laying method can also reduce electromagnetic interference between cables, ensuring the stability and accuracy of signal transmission, thereby improving the overall reliability of the environmental test chamber.

[0039] In this embodiment, the bonding component 23 is made of an elastic material. The elastic material has deformation capabilities, allowing it to adapt to cables of different thicknesses, greatly enhancing the versatility and applicability of the cable threading structure and effectively reducing maintenance costs.

[0040] Specifically, in the high-temperature environment of the environmental test chamber, the high- and low-temperature resistant elastic material will not deform or lose its elasticity due to high temperature, and can always maintain a tight fit and effective fixation of the cable, preventing the cable from loosening due to thermal expansion and ensuring stable signal transmission; in the low-temperature environment of the environmental test chamber, the elastic properties of the high- and low-temperature resistant elastic material are not affected by low temperature, and can still tightly wrap the cable, avoiding gaps that could lead to air leakage, condensation and other problems.

[0041] Optionally, the bonding component 23 is made of high and low temperature resistant silicone. This high and low temperature resistant silicone material maintains stable elasticity under both high and low temperature conditions, allowing it to tightly adhere to the cable and form a good seal, preventing the intrusion of external airflow, impurities, and moisture, thus maintaining a stable environment within the environmental test chamber. Simultaneously, during the cable threading process, the high and low temperature resistant silicone material provides cushioning for the cable sheath, preventing damage due to friction and compression, thereby ensuring the cable's performance and lifespan.

[0042] In other embodiments, the bonding element 23 is made of foam material. This material is soft and can better adapt to cables of different thicknesses, enhancing the versatility and applicability of the cable threading structure. Optionally, the bonding element 23 can be made of high and low temperature resistant foam materials such as silicone rubber foam material and polytetrafluoroethylene foam material, without specific limitations.

[0043] like Figures 3-4 As shown, the cable threading structure also includes a seal 4 and fasteners (not shown). The first fixing member 21 has a first outward flange 211 circumferentially. The seal 4 is sandwiched between the first outward flange 211 and the first side wall 12. The fastener passes through the first outward flange 211 and the seal 4 and is fixedly connected to the first side wall 12. The first outward flange 211 of the first fixing member 21 and the seal 4 fit tightly. The first outward flange 211 can press against the seal 4, and the seal 4 can effectively fill the gap between the first fixing member 21 and the first side wall 12, enhance the sealing performance at the threading hole 11, maintain the stability of the environment inside the chamber, and ensure the accuracy of the environmental test chamber test results.

[0044] In this embodiment, the sealing element 4 is constructed as a U-shaped sealing element. The first fixing element 21 is a cuboid frame, and the second fixing element 22 is a cuboid flip cover. The cuboid flip cover is rotatably connected to the cuboid frame via a rotating hinge. Except for the side corresponding to the cuboid flip cover, the other three sides of the cuboid frame are provided with a first outer flange 211. Except for the side corresponding to the cuboid frame, the other three sides of the cuboid flip cover are provided with a second outer flange 221. When the cuboid flip cover and the cuboid frame are fastened together, part of the U-shaped sealing element is sandwiched between the first outer flange 211 and the first side wall 12, and another part of the U-shaped sealing element is sandwiched between the second outer flange 221 and the first side wall 12. When the second fixing member 22 is engaged with the first fixing member 21, it not only blocks the wire hole 11, but also seals both the second fixing member 22 and the first fixing member 21 against the first side wall 12, effectively preventing condensation and heat accumulation at the wire hole 11 in high and low temperature environments.

[0045] In this embodiment, the seal 4 is made of silicone. In other embodiments, the seal 4 may also be made of rubber, and no specific limitation is made here.

[0046] like Figure 4As shown, the cable threading structure also includes insulation components 5, both inside the first fixing component 21 and the second fixing component 22. On one hand, during high and low temperature tests in the environmental test chamber, the insulation components 5 inside the first fixing component 21 and the second fixing component 22 prevent condensation or heat buildup around the threading hole 11 due to temperature changes, avoiding cable damage from moisture or overheating, extending cable lifespan, and reducing the occurrence of failures. On the other hand, the insulation components 5 effectively prevent heat exchange between the inside and outside of the chamber, reducing heat loss due to the threading hole 11 or external heat intrusion, ensuring a stable test temperature is maintained inside the chamber.

[0047] In some embodiments, the first fastener 21 is welded from carbon steel. Carbon steel is low in cost, which can effectively control the manufacturing cost of the cable threading structure. The welding process makes the first fastener 21 structurally stable and enhances the overall mechanical strength.

[0048] In other embodiments, the first fastener 21 is welded from stainless steel. Stainless steel is highly corrosion-resistant and not easily rusted or damaged, extending the service life of the threading structure. The welding process gives the first fastener 21 high strength and stability, ensuring that it does not deform during threading. At the same time, the surface is smooth, making it easy to clean and maintain. The material of the first fastener 21 is not specifically limited here.

[0049] like Figures 3-4 As shown, in this embodiment, the second fixing member 22 is provided with a hook 24, and the first fixing member 21 is provided with a buckle 25. The hook 24 can be fastened with the buckle 25. This facilitates the fastening of the second fixing member 22 and the first fixing member 21, enabling quick sealing of the wire hole 11. The fastening is tight and secure, preventing accidental detachment and improving the reliability of the cable threading structure.

[0050] In other embodiments, the first fixing member 21 is provided with a hook 24, and the second fixing member 22 is provided with a buckle 25. The hook 24 can be fastened to the buckle 25. This allows for quick fastening of the second fixing member 22 and the first fixing member 21, achieving rapid sealing of the wire hole 11. After fastening, the connection is stable, preventing accidental opening and improving the reliability of the cable threading structure.

[0051] In this embodiment, the first end of the second fixing member 22 is rotatably connected to the first end of the first fixing member 21 via a hinge, and the second end of the second fixing member 22 is fastened to the second end of the first fixing member 21. In other embodiments, the first end of the second fixing member 22 is fastened to the first end of the first fixing member 21, and the second end of the second fixing member 22 is also fastened to the second end of the first fixing member 21; no specific limitation is made here.

[0052] like Figures 1-5As shown, the blocking component 3 includes a frame 31 and a baffle 32. The frame 31 is fixed to the second side wall 13 and has a through hole 311 that communicates with the wire hole 11. The baffle 32 is mounted on the frame 31 and can block the through hole 311, allowing the cable to pass through it. On one hand, the baffle 32 has soft and fine bristles, effectively preventing dust and impurities from entering the environmental test chamber through the through hole 311 without hindering the cable from passing through it. On the other hand, the baffle 32 can buffer the airflow, reducing the entry of hot and cold air into the wire hole 11, and thus transferring the hot and cold air to the outside of the environmental test chamber, ensuring stable temperature and humidity inside the chamber and improving the accuracy of the test results.

[0053] In this embodiment, the baffle brush 32 is a bristle brush resistant to high and low temperatures. In other embodiments, the baffle brush 32 can be a rubber brush, fiber brush, sponge brush, etc., and no specific limitation is made here.

[0054] In some embodiments, the frame 31 is welded from carbon steel. Carbon steel has a lower cost, which can effectively control the manufacturing cost of the wiring structure. The welding process gives the frame 31 good structural strength, ensuring that it will not easily deform during long-term use, ensuring the stable installation of the baffle 32, and continuously playing its role in blocking high-temperature airflow, low-temperature airflow, or impurities.

[0055] In other embodiments, the frame 31 is made of stainless steel welded together. Stainless steel has strong corrosion resistance, and even in humid or chemically corrosive environments, the frame 31 is not easily rusted or damaged, and can maintain its structural integrity for a long time. The welding process gives the frame 31 good structural strength, ensuring that it will not easily deform during long-term use, ensuring the stable installation of the baffle 32, and continuously playing its role in blocking high-temperature airflow, low-temperature airflow, or impurities.

[0056] like Figures 4-5 As shown, the baffle brush 32 includes a first brush 321 and a second brush 322. The first ends of both the first brush 321 and the second brush 322 are connected to the frame 31, and the second ends of the first brush 321 and the second brush 322 interlock and engage with each other. Compared with a single brush, the design of two brushes interlocking and engaging with each other, without obstructing the cable through-hole 311 and the wire hole 11, greatly enhances the blocking effect. It can more effectively block the conduction of high-temperature airflow and low-temperature airflow to the outside of the environmental test chamber, reduce the gas exchange between the inside and outside of the environmental test chamber, prevent impurities from entering the interior of the environmental test chamber, and maintain the stability of the environment inside the environmental test chamber.

[0057] Specifically, during the threading process, the cable passes through the threading hole 11 of the threading component 1, then through the baffle 32, and separates and interlocks with the first brush 321 and the second brush 322. After the threading is completed, the first brush 321 and the second brush 322 return to their original position due to their own elasticity and tightly wrap the cable.

[0058] like Figures 4-5 As shown, the blocking component 3 also includes an anti-scratch member 33, which includes a main body 331 and an outward-curving part 332. One end of the main body 331 is connected to the inner wall of the through hole 311, and the other end is connected to the outward-curving part 332. The extension direction of the outward-curving part 332 forms a preset angle with the cable insertion direction. When the cable is inserted, the outward-curving part 332 can guide the cable to smoothly enter the through hole 311, avoid the cable from rubbing against the edge of the frame 31, protect the cable sheath from being scratched, and prevent safety hazards such as leakage and short circuit caused by damage to the sheath.

[0059] Specifically, the extension direction of the outward-turned part 332 is defined as: the direction from which the connection end of the outward-turned part 332 and the main body part 331 faces the unconnected end; for ease of description, the positive direction of the cable insertion direction is defined as: the direction in which the cable passes through the through hole 11 to the through hole 311.

[0060] In this embodiment, the extension direction of the outward-facing portion 332 forms a preset angle with the positive direction of the cable threading direction. The preset angle is 90 degrees. This design effectively reduces the difficulty of threading, shortens the threading time, improves work efficiency, and keeps the cable sheath intact, extending the cable's service life. In other embodiments, the extension direction of the outward-facing portion 332 forms a preset angle with the positive direction of the cable threading direction. The preset angle can be 30 degrees, 45 degrees, 60 degrees, 75 degrees, etc., and is not specifically limited here.

[0061] In summary, the process of laying cables is roughly as follows:

[0062] (1) Rotate the second fixing member 22 so that the second fixing member 22 is away from the first fixing member 21. Multiple cables are laid evenly and pass through the wire hole 11, the baffle 32, and the through hole 311 in sequence to enter the environmental test chamber, so as to avoid multiple cables being squeezed and to ensure the accuracy of electrical signals or test signals; or;

[0063] Multiple cables are laid evenly and sequentially pass through through holes 311, baffles 32, and wire holes 11, and pass through the inside of the environmental test chamber to the outside of the environmental test chamber. The baffles 32 can block most of the cold or hot airflow from entering the wire holes 11.

[0064] (2) Rotate the second fixing member 22 so that the second fixing member 22 is close to the first fixing member 21, and fasten the hook 24 on the second fixing member 22 with the buckle 25 on the first fixing member 21 to block the wire hole 11;

[0065] At this time, some of the U-shaped seals are sandwiched between the first outer flange 211 and the first side wall 12, and another part of the U-shaped seals are sandwiched between the second outer flange 221 and the first side wall 12, which plays a good sealing role and prevents the cold air or hot air in the wire hole 11 from flowing to the outside of the environmental test chamber.

[0066] The fitting part 23 of the second fixing part 22 and the fitting part 23 of the first fixing part 21 are deformed according to the shape of the cable and fix the cable to prevent the cable from moving or shifting, thus ensuring the reliability of the environmental test chamber.

[0067] 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 cable threading structure, characterized by, The cable threading structure comprises: a threading part (1) having a first side wall (12) and a second side wall (13), wherein a threading hole (11) is arranged on the threading part (1) and penetrates through the first side wall (12) and the second side wall (13), the threading hole (11) is capable of threading a cable, and an inner wall of the threading hole (11) is provided with a heat breaking part (111); a fixing assembly (2) comprising a first fixing part (21), a second fixing part (22) and a fitting part (23), wherein the first fixing part (21) and the second fixing part (22) are capable of being buckled with each other, at least one of the first fixing part (21) and the second fixing part (22) is fixed to the first side wall (12), the fitting part (23) is arranged on the first fixing part (21) and the second fixing part (22), the fitting part (23) arranged on the first fixing part (21) is arranged opposite to the fitting part (23) arranged on the second fixing part (22), the first fixing part (21) and the second fixing part (22) are capable of blocking the threading hole (11) when buckled, and the fitting part (23) is capable of deforming and fixing the cable; a blocking assembly (3) arranged on the second side wall (13) and configured to block air flow or impurities from passing through the threading hole (11).

2. The cable threading structure of claim 1, wherein, The threading hole (11) is a rectangular threading hole.

3. The cable threading structure of claim 1, wherein, The fitting part (23) is made of elastic material or foamed material.

4. The cable threading structure of claim 1, wherein, The cable threading structure further comprises a sealing part (4) and a fastening part, the first fixing part (21) is circumferentially provided with a first outward turning edge (211), the sealing part (4) is clamped between the first outward turning edge (211) and the first side wall (12), and the fastening part penetrates through the first outward turning edge (211) and the sealing part (4) and is fixedly connected with the first side wall (12).

5. The cable threading structure of claim 1, wherein, The cable threading structure further comprises a heat preservation part (5), and the first fixing part (21) and the second fixing part (22) are both provided with the heat preservation part (5).

6. The cable threading structure of any one of claims 1-5, wherein, The second fixing part (22) is provided with a hook (24), the first fixing part (21) is provided with a buckle (25), and the hook (24) is capable of being buckled with the buckle (25); or The first fixing part (21) is provided with the hook (24), the second fixing part (22) is provided with the buckle (25), and the hook (24) is capable of being buckled with the buckle (25).

7. The cable threading structure of any of claims 1-5, wherein, The blocking assembly (3) comprises a frame (31) and a blocking brush (32), the frame (31) is fixedly arranged on the second side wall (13), the frame (31) is provided with a through hole (311), the through hole (311) is arranged in communication with the threading hole (11), the blocking brush (32) is arranged on the frame (31) and capable of blocking the through hole (311), and the cable is capable of penetrating through the blocking brush (32).

8. The cable threading structure of claim 7, wherein, The blocking brush (32) comprises a first brush (321) and a second brush (322), the first ends of the first brush (321) and the second brush (322) are connected with the frame (31), the second ends of the first brush (321) and the second brush (322) are crossed and are insertedly matched.

9. The cable threading structure of claim 7, wherein, The blocking assembly (3) further comprises a scratch-proof piece (33), the scratch-proof piece (33) comprises a main body part (331) and an everted part (332), one end of the main body part (331) is connected with the inner wall of the through hole (311), the other end is connected with the everted part (332), the extension direction of the everted part (332) and the passing direction of the cable form a preset included angle.

10. Environmental test chamber, characterized in that The cable passing structure comprises a box body and the cable passing structure according to any one of claims 1-9, the passing part (1) of the cable passing structure is arranged as a wall surface of the box body, and the cable can pass into or out of the box body through the cable passing structure.

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