Cable threading structure and environmental test box

Abstract

The invention 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] The present invention relates to the technical field of electrical assembly, and particularly to a cable threading structure and an environmental test chamber. Background Art

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

[0003] Currently, the cable threading design is to open multiple circular threading holes on the side wall of the box body of the environmental test chamber. In one case, each cable passes through a corresponding circular threading hole, which requires opening a large number of circular threading holes on the side wall of the box body, weakening the structural strength of the side wall of the box body and affecting the overall stability of the environmental test chamber. In another case, multiple cables pass through the same circular threading hole. In a high-temperature environment, the multiple cables are pressed against each other in a narrow space, hindering the dissipation of heat, and easily causing the problem of heat accumulation. Air leakage is likely to occur at the threading hole, resulting in an imbalance in the internal gas environment of the environmental test chamber; in a low-temperature environment, condensation will occur at the position of the threading hole, causing a dripping problem, which is very likely to cause a short circuit and result in a serious safety accident. In addition, when multiple groups of signal cables pass through the same threading hole, the signals will interfere with each other, affecting the accuracy of the test results of the environmental test chamber.

[0004] Therefore, there is an urgent need for a cable threading structure and an environmental test chamber to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention 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, and improve the test accuracy and safety of the environmental test chamber.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A cable threading structure, comprising: a threading member having a first side wall and a second side wall, the threading member being provided with a threading hole penetrating the first side wall and the second side wall, the threading hole being capable of passing a cable, and a heat insulation member being 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 being buckled with each other, and at least one of them being fixed to the first side wall, the fitting member being provided on both the first fixing member and the second fixing 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 capable of blocking the threading hole when buckled, and the fitting member being capable of deforming and fixing the cable; a blocking assembly disposed on the second side wall and configured to block the passage of air flow or impurities through the threading hole.

[0008] As an alternative solution, the wire threading hole is a rectangular wire threading hole.

[0009] As an alternative solution, the fitting member is made of an elastic material; or; the fitting member is made of a foaming material.

[0010] As an alternative solution, the cable threading structure further includes a sealing member and a fastening member. The first fixing member is circumferentially provided with a first outwardly turned edge. The sealing member is clamped between the first outwardly turned edge and the first side wall. The fastening member passes through the first outwardly turned edge and the sealing member and is fixedly connected to the first side wall.

[0011] As an alternative solution, the cable threading structure further includes a heat preservation member. The heat preservation member is provided inside both the first fixing member and the second fixing member.

[0012] As an alternative solution, a hook is provided on the second fixing member, and a buckle is provided on the first fixing member. The hook can be engaged with the buckle; or; the hook is provided on the first fixing member, and the buckle is provided on the second fixing member. The hook can be engaged with the buckle.

[0013] As an alternative solution, the blocking assembly includes a frame and a blocking brush. The frame is fixedly provided on the second side wall. The frame is provided with a through hole, and the through hole is communicated with the wire threading hole. The blocking brush is arranged on the frame and can block the through hole. The cable can pass through the blocking brush.

[0014] As an alternative solution, the blocking brush includes a first brush and a second brush. The first ends of both the first brush and the second brush are connected to the frame, and the second ends of the first brush and the second brush cross each other and are inserted and matched.

[0015] As an alternative solution, the blocking assembly further includes a scratch-proof member. The scratch-proof member includes a main body portion and an outwardly turned portion. One end of the main body portion is connected to the inner wall of the through hole, and the other end is connected to the outwardly turned portion. The extending direction of the outwardly turned portion forms a preset angle with the threading direction of the cable.

[0016] Another object of the present invention is to provide an environmental test chamber. By adopting the above-mentioned cable threading structure, the stability of the box body structure can be maintained, problems such as cable heat accumulation, air leakage, condensation short circuit, etc. can be reduced, the signal interference between various cables can be reduced, the environment inside the environmental test chamber can be guaranteed to be stable, and the accuracy and reliability of the test results can be improved.

[0017] To achieve this purpose, the present invention adopts the following technical solutions:

[0018] An environmental test chamber, including a box body and the cable threading structure. The threading member of the cable threading structure is provided as a wall surface of the box body. The cable can pass through the cable threading structure and enter or exit the box body.

[0019] Beneficial effects:

[0020] A wire threading structure provided by the present invention, when in use, a wire passes through a wire threading hole of a wire threading member, and a heat insulation member on the inner wall of the wire threading hole can play a heat insulation role. A first fixing member is fixedly arranged on a first side wall of the wire threading member, and a fitting member of the second fixing member and a fitting member of the first fixing member are arranged opposite to each other. When the second fixing member is buckled with the first fixing member, the wire threading hole is blocked at the same time. The fitting member deforms according to the shape of the wire and fixes the wire. A blocking assembly is arranged on a second side wall of the wire threading member, which can effectively block air flow or impurities from passing through the wire threading hole. This wire threading structure can solve the problems of heat accumulation, air leakage, condensation and signal interference caused by multiple wires passing through the same wire threading hole, and improve the test accuracy and safety of the environmental test chamber.

[0021] An environmental test chamber provided by the present invention adopts the above-mentioned wire threading structure. The wire threading member of the wire threading structure is set as a wall surface of the box body. Wires can penetrate into or out of the box body through the wire threading structure, which can maintain the stability of the box body structure, reduce problems such as wire heat accumulation, air leakage, condensation and short circuit, reduce signal interference between wires, ensure the stability of the environment inside the environmental test chamber, and improve the accuracy and reliability of test results. Description of the drawings

[0022] Figure 1 is the first schematic diagram of the wire threading structure provided by the embodiment of the present invention;

[0023] Figure 2 is the second schematic diagram of the wire threading structure provided by the embodiment of the present invention;

[0024] Figure 3 is the third schematic diagram of the wire threading structure provided by the embodiment of the present invention;

[0025] Figure 4 is the fourth schematic diagram of the wire threading structure provided by the embodiment of the present invention;

[0026] Figure 5 is the schematic diagram of the blocking assembly provided by the embodiment of the present invention.

[0027] In the figure: 1. Wire threading member; 11. Wire threading hole; 111. Heat insulation member; 12. First side wall; 13. Second side wall; 2. Fixing assembly; 21. First fixing member; 211. First outer flange; 22. Second fixing member; 221. Second outer flange; 23. Fitting member; 24. Hook; 25. Buckle; 3. Blocking assembly; 31. Frame; 311. Through hole; 32. Blocking brush; 321. First brush; 322. Second brush; 33. Anti-scratching member; 331. Main body part; 332. Outer turning part; 4. Sealing member; 5. Heat preservation member. Detailed implementation manners

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0029] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0031] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0032] This embodiment provides a cable threading structure and an environmental test chamber. The environmental test chamber includes a box body (not shown in the figure) and the cable threading structure of this embodiment. The threading member 1 of the cable threading structure is provided as a wall surface of the box body, and the cable can pass through the cable threading structure into or out of the box body. This ensures the convenient entry and exit of the cable into the box body, reduces the threading difficulty, improves the threading efficiency, maintains a clean test environment inside the box, and ensures the accuracy and reliability of the test data. The cable threading structure can also effectively protect the cable, avoid abrasion caused by frequent threading, opening and closing of the box body, etc., extend the service life of the cable, reduce the maintenance cost, and ensure the long-term stable operation of the environmental test chamber.

[0033] As Figures 1 - 4As shown in the figure, the cable threading structure provided in this embodiment includes a threading member 1, a fixing assembly 2, and a blocking assembly 3. The threading member 1 has a first side wall 12 and a second side wall 13. A threading hole 11 penetrating the first side wall 12 and the second side wall 13 is provided on the threading member 1. The threading hole 11 can accommodate a cable. A heat insulation member 111 is provided on the inner wall of the threading hole 11. The fixing assembly 2 includes a first fixing member 21, a second fixing member 22, and a fitting member 23. The first fixing member 21 and the second fixing member 22 can be buckled with each other, and at least one of them is fixed to the first side wall 12. Fitting members 23 are provided on both the first fixing member 21 and the second fixing member 22, and the fitting member 23 on the first fixing member 21 and the fitting member 23 on the second fixing member 22 are arranged oppositely. When the first fixing member 21 and the second fixing member 22 are buckled, the threading hole 11 can be blocked, and the fitting member 23 can deform and fix the cable. The blocking assembly 3 is arranged on the second side wall 13 and is used to block air flow or impurities from passing through the threading hole 11. The heat insulation member 111 on the inner wall of the threading hole 11 can reduce heat transfer in both high-temperature and low-temperature environments, avoid problems such as heat accumulation and condensation, and prevent situations such as air leakage and short circuit. The first fixing member 21 and the second fixing member 22 of the fixing assembly 2 are buckled, and the fitting member 23 fixes the cable, making the cable distribution reasonable, reducing mutual extrusion, and facilitating heat dissipation. The blocking assembly 3 can block air flow and impurities, maintain the stability of the gas environment in the box body, and improve the accuracy of the test results.

[0034] For a cable threading structure provided in this embodiment, during use, the cable passes through the threading hole 11 of the threading member 1. The heat insulation member 111 on the inner wall of the threading hole 11 can play a heat insulation role. The first fixing member 21 is fixedly arranged on the first side wall 12 of the threading member 1. The fitting member 23 of the second fixing member 22 and the fitting member 23 of the first fixing member 21 are arranged oppositely. When the second fixing member 22 is buckled with the first fixing member 21, the threading hole 11 is blocked at the same time. The fitting member 23 deforms according to the shape of the cable and fixes the cable. The second side wall 13 of the threading member 1 is provided with a blocking assembly 3, which can effectively block air flow or impurities from passing through the threading hole 11. This cable threading structure can solve problems such as heat accumulation, air leakage, condensation, and signal interference caused by multiple cables passing through the same threading hole 11, and improve the test accuracy and safety of the environmental test chamber.

[0035] An environmental test chamber provided in this embodiment adopts the above-mentioned cable threading structure. The threading member 1 of the cable threading structure is set as a wall surface of the box body. The cable can penetrate into or out of the box body through the cable threading structure, which can maintain the stability of the box body 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 in the environmental test chamber, and improve the accuracy and reliability of the test results.

[0036] In this embodiment, the first side wall 12 faces the outside of the box body, and the second side wall 13 faces the inside of the box body. On the premise of ensuring regular cable wiring, the cable threading structure can effectively isolate the internal and external environments of the environmental test chamber, prevent external impurities from entering the inside of the environmental test chamber, and block the conduction of hot air flow and cold air flow inside the environmental test chamber to the outside.

[0037] In this embodiment, the first fixing member 21 is fixedly arranged on the first side wall 12, and the second fixing member 22 is rotatably connected to the first fixing member 21 through a hinge and can be mutually buckled with the first fixing member 21. In other embodiments, the second fixing member 22 is fixedly arranged on the first side wall 12, and the first fixing member 21 is rotatably connected to the second fixing member 22 through a hinge and can be mutually buckled with the second fixing member 22. In still other embodiments, after the cable passes through the threading 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, the fastener passes through the first fixing member 21 and is fixedly connected to the first side wall 12, and the 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 fastener.

[0038] As Figures 1 - 4 shown, the threading hole 11 is a rectangular threading hole. On the one hand, the rectangular threading hole allows multiple cables to be evenly laid, reducing the possibility of the cables being wound around each other and facilitating subsequent maintenance and management. On the other hand, this way of evenly laying the cables can also reduce the electromagnetic interference between the cables, ensure the stability and accuracy of signal transmission, and thus improve the working reliability of the entire environmental test chamber.

[0039] In this embodiment, the fitting member 23 is made of an elastic material. The elastic material has the ability to deform and can adapt to cables of different thicknesses, greatly enhancing the versatility and applicability of the cable threading structure and effectively reducing the maintenance cost.

[0040] Specifically, in the high-temperature environment of the environmental test chamber, the elastic material resistant to high and low temperatures will not deform or lose its elasticity due to high temperature, and can always maintain a tight fit and effective fixation on 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 characteristics of the elastic material resistant to high and low temperatures are not affected by low temperature, and it can still tightly wrap the cable to avoid problems such as air leakage and condensation caused by gaps.

[0041] Optionally, the fitting 23 is made of high and low temperature resistant silicone material. The high and low temperature resistant silicone material can maintain stable elasticity in high or low temperature environments, can fit the cable tightly, form a good sealing effect, avoid the intrusion of external airflow, impurities and moisture, and maintain a stable environment in the environmental test box. At the same time, during the threading process, the high and low temperature resistant silicone material provides a buffer for the cable skin, preventing the cable skin from being damaged due to friction and extrusion, thereby ensuring the performance and service life of the cable.

[0042] In other embodiments, the fitting 23 is made of foam material. This material is soft and can better adapt to cables of different thicknesses, thereby enhancing the versatility and applicability of the cable threading structure. Optionally, the fitting 23 can be made of high and low temperature resistant foam material such as silicone rubber foam material, polytetrafluoroethylene foam material, etc., which is not specifically limited here.

[0043] like Figures 3 - 4 As shown, the cable threading structure also includes a seal 4 and a fastener (not shown), the first fixing member 21 is provided with a first outer flange 211 in the circumferential direction, the seal 4 is sandwiched between the first outer flange 211 and the first side wall 12, and the fastener passes through the first outer flange 211 and the seal 4, and is fixedly connected to the first side wall 12. The first outer flange 211 of the first fixing member 21 and the seal 4 are closely matched, the first outer flange 211 can press 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 at the threading hole 11, maintain the stability of the environment in the box, and ensure the accuracy of the test results of the environmental test box.

[0044] In this embodiment, the seal 4 is constructed as a U-shaped seal, the first fixing member 21 is a rectangular frame, the second fixing member 22 is a rectangular flip cover, the rectangular flip cover is rotatably connected to the rectangular frame through a rotating hinge, and the rectangular frame, except for the one side corresponding to the rectangular flip cover, has a first outer flange 211 on the other three sides of the rectangular frame in the circumferential direction; the rectangular flip cover, except for the one side corresponding to the rectangular frame, has a second outer flange 221 on the other three sides of the rectangular flip cover in the circumferential direction. When the rectangular flip cover is buckled with the rectangular frame, part of the U-shaped seal is sandwiched between the first outer flange 211 and the first side wall 12, and the other part of the U-shaped seal is sandwiched between the second outer flange 221 and the first side wall 12. When the second fixing member 22 is buckled with the first fixing member 21, the threading hole 11 is blocked and both the second fixing member 22 and the first fixing member 21 are sealed with the first side wall 12, effectively avoiding condensation, heat accumulation and other problems at the threading hole 11 in high and low temperature environments.

[0045] In this embodiment, the sealing member 4 is made of silicone material. In other embodiments, the sealing member 4 can also be made of rubber material, which is not specifically limited here.

[0046] like Figure 4As shown in the figure, the cable threading structure further includes a heat insulation member 5, and heat insulation members 5 are provided inside both the first fixing member 21 and the second fixing member 22. On the one hand, when performing high and low temperature tests in an environmental test chamber, the heat insulation members 5 inside the first fixing member 21 and the second fixing member 22 can prevent condensation or heat accumulation from forming around the threading hole 11 due to temperature changes, avoid damage to the cable caused by moisture and overheating, extend the service life of the cable, and reduce the occurrence of failures. On the other hand, the heat insulation member 5 effectively blocks the heat exchange between the inside and outside of the box body, reduces the heat dissipation caused by the threading hole 11 or the intrusion of external heat, and ensures that a stable test temperature is maintained inside the box body.

[0047] In some embodiments, the first fixing member 21 is formed by carbon steel welding. Carbon steel has a low cost and can effectively control the manufacturing cost of the cable threading structure. The welding process makes the structure of the first fixing member 21 stable and enhances the overall mechanical strength.

[0048] In other embodiments, the first fixing member 21 is formed by stainless steel welding. Stainless steel has strong corrosion resistance and is not easily rusted or damaged, which extends the service life of the threading structure. The welding process makes the first fixing member 21 have high strength and stability, ensures that it does not deform during threading, and at the same time has a smooth surface, which is convenient for cleaning and maintenance. The material of the first fixing member 21 is not specifically limited here.

[0049] As Figures 3 - 4 shown in the figure, in this embodiment, a hook 24 is provided on the second fixing member 22, and a buckle 25 is provided on the first fixing member 21. The hook 24 can be buckled with the buckle 25. It is convenient for the second fixing member 22 to be buckled with the first fixing member 21 to quickly seal the threading hole 11. The buckle is tight and firm, preventing accidental detachment and improving the reliability of the cable threading structure.

[0050] In other embodiments, a hook 24 is provided on the first fixing member 21, and a buckle 25 is provided on the second fixing member 22. The hook 24 can be buckled with the buckle 25. It can quickly complete the buckling of the second fixing member 22 and the first fixing member 21 to quickly seal the threading hole 11. After buckling, 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 through a hinge, and the second end of the second fixing member 22 is buckled and connected to the second end of the first fixing member 21. In other embodiments, the first end of the second fixing member 22 is buckled and connected to the first end of the first fixing member 21, and the second end of the second fixing member 22 is also buckled and connected to the second end of the first fixing member 21, which is not specifically limited here.

[0052] As Figures 1 - 5As shown, the blocking component 3 includes a frame 31 and a blocking brush 32. The frame 31 is fixedly provided on the second side wall 13. The frame 31 is provided with a through hole 311, and the through hole 311 is communicated with the wire threading hole 11. The blocking brush 32 is arranged on the frame 31 and can block the through hole 311, and the cable can pass through the blocking brush 32. On the one hand, the blocking brush 32 has soft and fine bristles, which can effectively block dust and impurities from entering the inside of the environmental test chamber through the through hole 311 without hindering the cable from passing through the through hole 311 and the wire threading hole 11. On the other hand, the blocking brush 32 can play a certain buffering role on the air flow, reduce the hot air flow and cold air flow from entering the wire threading hole 11, and then conduct the hot air flow and cold air flow to the outside of the environmental test chamber, ensuring the stability of the temperature and humidity inside the environmental test chamber and improving the accuracy of the test results of the environmental test chamber.

[0053] In this embodiment, the blocking brush 32 is a high and low temperature resistant brush. In other embodiments, the blocking brush 32 can be a rubber brush, a fiber brush, a sponge brush, etc., which are not specifically limited here.

[0054] In some embodiments, the frame 31 is made of carbon steel by welding. The carbon steel has a low cost, which can effectively control the manufacturing cost of the wire threading structure. The welding process endows the frame 31 with good structural strength, ensuring that it will not easily deform during long-term use, guaranteeing the stable installation of the blocking brush 32, and continuously playing the role of blocking high-temperature air flow, low-temperature air flow or impurities.

[0055] In other embodiments, the frame 31 is made of stainless steel by welding. The stainless steel has strong corrosion resistance. Even in a humid and chemically corrosive environment, the frame 31 is not easily rusted and damaged, and can maintain the structural integrity for a long time. The welding process endows the frame 31 with good structural strength, ensuring that it will not easily deform during long-term use, guaranteeing the stable installation of the blocking brush 32, and continuously playing the role of blocking high-temperature air flow, low-temperature air flow or impurities.

[0056] As Figures 4 - 5 shown, the blocking brush 32 includes a first brush 321 and a second brush 322. The first ends of the first brush 321 and the second brush 322 are both connected to the frame 31, and the second ends of the first brush 321 and the second brush 322 cross each other and are inserted and matched. Compared with a single brush, the design of the two brushes crossing each other and being inserted and matched greatly enhances the blocking effect on the premise of not hindering the cable from passing through the through hole 311 and the wire threading hole 11, can more effectively block the high-temperature air flow and low-temperature air flow from being conducted to the outside of the environmental test chamber, reduces the gas exchange inside and outside the environmental test chamber, blocks impurities from entering the inside of the environmental test chamber, and maintains the stability of the environment inside the environmental test chamber.

[0057] Specifically, when threading, the cable passes through the threading hole 11 of the threading piece 1, and then passes through the brush 32, separating the first brush 321 and the second brush 322 that cross and fit each other. After 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 assembly 3 also includes an anti-scratch member 33, which includes a main body 331 and an outward-turned portion 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-turned portion 332. The extension direction of the outward-turned portion 332 forms a preset angle with the cable insertion direction. 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-turned portion 332. When the cable is inserted, the outward-turned portion 332 can guide the cable to enter the through hole 311 smoothly, avoid scratching the cable and 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 damaged sheath.

[0059] Specifically, the extension direction of the outward-turned portion 332 is defined as: the direction from the connection end of the outward-turned portion 332 and the main body portion 331 toward the unconnected end; for the convenience of description, the positive direction of the cable threading direction is defined as: the direction in which the cable is threaded from the threading hole 11 to the through hole 311.

[0060] In this embodiment, the extension direction of the outer turn portion 332 forms a preset angle with the positive direction of the cable threading direction, and the preset angle value 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 service life of the cable. In other embodiments, the extension direction of the outer turn portion 332 forms a preset angle with the positive direction of the cable threading direction, and the preset angle value can be 30 degrees, 45 degrees, 60 degrees, 75 degrees, etc., which 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, and multiple cables are evenly laid and sequentially passed through the threading hole 11, the brush stop 32, and the through hole 311 to enter the interior of the environmental test chamber to avoid squeezing of multiple cables and ensure the accuracy of the electrical signal or the test signal; or;

[0063] Multiple cables are evenly laid and sequentially passed through the through hole 311, the brush block 32, and the threading hole 11, and passed from the inside of the environmental test box to the outside of the environmental test box, wherein the brush block 32 can block most of the cold air flow or hot air flow from entering the threading hole 11;

[0064] (2) Rotate the second fixing member 22 to make the second fixing member 22 approach the first fixing member 21, and buckle the hook 24 on the second fixing member 22 with the buckle 25 of the first fixing member 21 to block the wire passing hole 11;

[0065] At this time, part of the square seal is clamped between the first outward flange 211 and the first side wall 12, and the other part of the square seal is clamped between the second outward flange 221 and the first side wall 12, playing a good sealing role to prevent the cold air flow or hot air flow in the wire passing hole 11 from flowing to the outside of the environmental test chamber;

[0066] The fitting members 23 of the second fixing member 22 and the fitting members 23 of the first fixing member 21 are deformed according to the shape of the cable and fix the cable to avoid the cable moving and shifting, ensuring the reliability of the operation of the environmental test chamber.

[0067] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Cable threading structure, characterized in that Comprising: A wire threading member (1), the wire threading member (1) having a first side wall (12) and a second side wall (13), a wire threading hole (11) penetrating through the first side wall (12) and the second side wall (13) being provided on the wire threading member (1), the wire threading hole (11) being capable of threading a cable, and a heat insulating member (111) being provided on the inner wall of the wire threading hole (11); A fixing assembly (2), including a first fixing member (21), a second fixing member (22) and a fitting member (23), the first fixing member (21) and the second fixing member (22) being capable of being buckled with each other, and at least one of them being fixed to the first side wall (12), the fitting member (23) being provided on both the first fixing member (21) and the second fixing member (22), and the fitting member (23) on the first fixing member (21) being arranged opposite to the fitting member (23) on the second fixing member (22), the wire threading hole (11) being capable of being blocked when the first fixing member (21) and the second fixing member (22) are buckled, and the fitting member (23) being capable of deforming and fixing the cable; A blocking assembly (3), arranged on the second side wall (13), configured to block air flow or impurities from passing through the wire threading hole (11).

2. The cable threading structure according to claim 1, characterized in that The wire threading hole (11) is a rectangular wire threading hole.

3. The cable threading structure according to claim 1, characterized in that, The fitting member (23) is made of an elastic material; or; the fitting member (23) is made of a foaming material.

4. The cable threading structure according to claim 1, characterized in that, The cable threading structure further includes a sealing member (4) and a fastening member. The first fixing member (21) is circumferentially provided with a first outward flange (211), the sealing member (4) is clamped between the first outward flange (211) and the first side wall (12), and the fastening member penetrates through the first outward flange (211) and the sealing member (4) and is fixedly connected to the first side wall (12).

5. The cable threading structure according to claim 1, characterized in that, The cable threading structure further includes a heat insulating member (5), and the heat insulating member (5) is provided inside both the first fixing member (21) and the second fixing member (22).

6. The cable threading structure according to any one of claims 1-5, characterized in that, A hook (24) is provided on the second fixing member (22), a buckle (25) is provided on the first fixing member (21), and the hook (24) is capable of being buckled with the buckle (25); or; The hook (24) is provided on the first fixing member (21), the buckle (25) is provided on the second fixing member (22), and the hook (24) is capable of being buckled with the buckle (25).

7. The cable threading structure according to any one of claims 1-5, characterized in that, The blocking assembly (3) includes a frame (31) and a blocking brush (32). The frame (31) is fixed to the second side wall (13), the frame (31) is provided with a through hole (311), the through hole (311) is communicated with the wire threading hole (11), the blocking brush (32) is arranged on the frame (31) and can block the through hole (311), and the cable can pass through the blocking brush (32).

8. The cable threading structure according to claim 7, wherein, The brush guard (32) includes a first brush (321) and a second brush (322). The first ends of the first brush (321) and the second brush (322) are both connected to the frame (31), and the second ends of the first brush (321) and the second brush (322) cross each other and are inserted and matched with each other.

9. The cable threading structure according to claim 7, wherein, The blocking assembly (3) further includes a scratch-proof member (33). The scratch-proof member (33) includes a main body portion (331) and an outward-turning portion (332). One end of the main body portion (331) is connected to the inner wall of the through hole (311), and the other end is connected to the outward-turning portion (332). The extending direction of the outward-turning portion (332) forms a preset angle with the threading direction of the cable.

10. Environmental test chamber, characterized in that, It includes a box body and the cable threading structure according to any one of claims 1-9. The threading member (1) of the cable threading structure is provided on a wall surface of the box body, and the cable can pass through the cable threading structure to enter or exit the box body.

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