Box door and environmental test box

Abstract

The utility model belongs to the field of environmental test equipment, and discloses a box door and an environmental test box. The box door comprises a box door body, a lighting lamp and an observation assembly, the observation assembly extends in the thickness direction of the box door body and penetrates through the surfaces of the two sides of the box door body, the lighting lamp is arranged in the observation assembly, the observation assembly comprises an outer visible plate, an inner visible window, a hanging frame and a fixing piece, and the inner visible window is fixedly connected with the box door body. The fixing piece is fixedly connected with the box door body, the hanging frame is fixedly connected with the outer visible plate, the hanging frame is located outside the orthographic projection of the inner visible window in the thickness direction of the box door body, the hanging frame is detachably connected with the fixing piece, and the hanging frame or the outer visible plate is in clamping connection or magnetic attraction fit with the box door body. The box door can solve the problems of long downtime and cost increase caused by tedious operation of replacing an illuminating lamp and low maintenance efficiency. Therefore, the maintenance process is simplified, the maintenance efficiency of the environmental test box is improved, the downtime of equipment is reduced, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental test equipment technical field especially relates to a box door and environmental test box. BACKGROUND

[0002] In the industrial and scientific research field, the test box can simulate high temperature, low temperature, high humidity, low humidity and other climatic environmental conditions, and carry out relevant tests on the test sample to evaluate its performance and reliability. The box door, as a key component of the test box, is used to close the box body during testing to ensure the stability of the environment inside the box. At the same time, in order to facilitate observation of the state of the sample inside the box, an observation assembly with a light is provided on the box door.

[0003] However, because the test box often performs high and low temperature tests, the light in the observation assembly is affected by extreme temperatures and needs to be replaced frequently. However, the observation assembly is usually fixed with screws, so when replacing the light, the screws need to be removed, which is cumbersome to operate, reduces the maintenance efficiency of the environmental test box, and increases downtime and costs. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a box door and an environmental test box to solve the problem of cumbersome operation and low maintenance efficiency of the observation assembly of the box door when replacing the light, which in turn causes long downtime and increased costs.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A box door, comprising a box door body, a light, and an observation assembly, the observation assembly extends along the thickness direction of the box door body and penetrates through both side surfaces of the box door body, the light is arranged inside the observation assembly, the observation assembly comprises an outer visible plate, an inner visible window, a hanger, and a fixing piece, the inner visible window is fixedly connected with the box door body, the fixing piece is fixedly connected with the box door body, the hanger is fixedly connected with the outer visible plate, and along the thickness direction of the box door body, the hanger is located outside the orthographic projection of the inner visible window, the hanger is detachably connected with the fixing piece, and the hanger or the outer visible plate is snap-fitted or magnetically attracted with the box door body.

[0007] As an optional solution for a box door, the hanger comprises a connecting shaft, and the fixing piece comprises a U-shaped groove, the bottom of the U-shaped groove is provided with a circular-arc-shaped concave surface with a radius equal to that of the connecting shaft, the connecting shaft can abut against the circular-arc-shaped concave surface and can be separated from the U-shaped groove.

[0008] As an optional solution for a box door, a striking type door catch or a magnetic type door catch is arranged between the hanger and the box door body.

[0009] As an optional solution for a box door, the hanger further comprises a support plate, the support plate is adhesively connected with the outer visible plate, and the support plate is provided with a plurality of through holes at intervals.

[0010] As an optional solution of the cabinet door, the observation assembly is provided with two of the hangers and two of the fixing members, the fixing members are connected with the cabinet door body and located at opposite sides of the inner visible window, and the hangers correspond to the fixing members one by one.

[0011] As an optional solution of the cabinet door, the cabinet door body includes an outer panel, the outer panel is provided with a mounting groove, a through hole is arranged at a groove bottom of the mounting groove, the inner visible window is fixed in the through hole, the fixing member is mounted at a bottom wall of the mounting groove, and the outer visible panel is arranged in a flush manner with the outer panel.

[0012] As an optional solution of the cabinet door, the inner visible window includes a window frame, an inner visible panel and a heat insulation frame, the cabinet door body further includes an inner panel, one end of the window frame is connected with the bottom wall of the mounting groove, the other end of the window frame is connected with one side of the heat insulation frame, the other side of the heat insulation frame is connected with the inner panel, and the window frame and the heat insulation frame surround the four sides of the inner visible panel.

[0013] As an optional solution of the cabinet door, the inner visible window further includes an inner cover plate, the inner cover plate is connected with the inner panel and covers the four side edges of the inner visible panel.

[0014] As an optional solution of the cabinet door, the window frame includes a first frame and a second frame connected with each other, the first frame is located between the bottom wall of the mounting groove and the outer visible panel, an inner wall of the first frame is provided with the illuminating lamp, and the second frame surrounds the inner visible panel.

[0015] The environmental test chamber includes a cabinet and the cabinet door, one side of the cabinet is provided with an opening, the cabinet door is used for opening or closing the opening, and the observation assembly is used for observing the inner cavity of the cabinet.

[0016] Advantages:

[0017] The utility model provides a box door and environmental test box, the lighting lamp is installed inside observation subassembly, and the observation is provided with sufficient illumination stably. The inner visible window is fixedly connected with the box door body, the fixed part is connected with the box door body, the hanger is connected with the outer visible plate, along the thickness direction of the box door body, the hanger is located in the orthographic projection of the inner visible window, avoids the observation line of sight to be blocked, the hanger is detachably connected with the fixed part, and the hanger or the outer visible plate is clamped or magnetically attracted with the box door body, and this structural design makes the outer visible plate can rotate flexibly and can be conveniently disassembled. When needing to maintain or replace the lighting lamp in the observation subassembly, the operating personnel only need to pull the outer visible plate, and the locking state between the outer visible plate and the box door body is released. Subsequently, the hanger is disassembled from the fixed part, the outer visible plate is separated from the inner visible window, and the lighting lamp in the inside can be maintained or replaced. This design avoids the traditional complex disassembly mode, greatly simplifies the maintenance process, improves the maintenance efficiency of the environmental test box, reduces the equipment downtime, reduces the maintenance cost, also provides more convenient use experience for the operating personnel, guarantees the continuous and effective observation to the inside of the test box. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the box door provided by the utility model embodiment;

[0019] Figure 2 It is the structure schematic diagram of the fixed part provided by the utility model embodiment;

[0020] Figure 3 It is the structure schematic diagram of the hanger, the buckle seat and the buckle tongue provided by the utility model embodiment;

[0021] Figure 4 It is the structure schematic diagram of the observation subassembly provided by the utility model embodiment;

[0022] Figure 5 It is the cross section schematic diagram of the box door provided by the utility model embodiment;

[0023] Figure 6 It is the structure schematic diagram of the inner visible window provided by the utility model embodiment.

[0024] In the drawing:

[0025] 1, the box door body; 11, the outer panel; 12, the heat preservation layer; 13, the inner panel; 111, the installation groove;

[0026] 21, the outer visible plate;

[0027] 22, the inner visible window; 221, the window frame; 222, the inner visible plate; 223, the inner cover plate; 224, the heat insulation frame; 2211, the first frame; 2212, the second frame; 2213, the wire through hole; 22121, the partition hole; 2231, the water baffle;

[0028] 231, buckle seat; 232, buckle tongue;

[0029] 24, hanger; 241, support plate; 242, connecting shaft; 243, first connecting plate; 244, reinforcing plate; 2411, through hole; 2421, limiting piece;

[0030] 25, fixing piece; 251, U-shaped groove; 252, mounting plate; 253, mounting hole; 254, second connecting plate;

[0031] 3, hinge; 4, handle lock; 5, electromagnetic lock; 6, illuminating lamp. DETAILED DESCRIPTION

[0032] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0033] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the embodiment, the terms "up", "down" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0036] The embodiment provides an environmental test chamber, which comprises a chamber body (not shown in the figure) and a chamber door, the chamber body is provided with an opening on one side, the chamber door is used for opening or closing the opening, and the chamber door is provided with an observation assembly for observing the inner cavity of the chamber body. This facilitates the putting in and taking out of test samples and is beneficial to the accurate regulation of environmental parameters in the chamber, so that a stable environment is provided for tests. The observation assembly arranged on the chamber door enables test personnel to observe the state and progress of test samples in the chamber in real time without opening the chamber door, thereby avoiding interference with the test environment.

[0037] Specifically, as shown in the figure, Figure 1 The chamber door comprises a hinge 3, a handle lock 4 and an electromagnetic lock 5, one side of the chamber door is rotationally connected with the chamber body through the hinge 3, the handle lock 4 is arranged on the other side corresponding to the chamber door and the chamber body, and is used for realizing mechanical fastening connection between the chamber door and the chamber body through manual operation when the chamber door is closed, so that the stable closed state of the chamber door in the test process is ensured, and accidental opening of the chamber door caused by slight external vibration and the like is prevented. The electromagnetic lock 5 is arranged on the other side corresponding to the chamber door and the chamber body and is arranged in a spaced mode with the handle lock 4, and when the environmental test chamber enters a working state, the electromagnetic lock 5 can be automatically triggered to work, additional locking force is formed, the connection stability of the chamber door and the chamber body is further enhanced, and the chamber door can be effectively prevented from being opened by mistake during the test. It should be noted that the handle lock 4 and the electromagnetic lock 5 belong to the prior art, and the specific structure of the handle lock 4 and the electromagnetic lock 5 will not be described here.

[0038] As shown in the figure, Figures 1-6 The chamber door comprises a chamber door body 1, an illuminating lamp 6 and an observation assembly, the observation assembly extends along the thickness direction of the chamber door body 1 and penetrates through the two side surfaces of the chamber door body 1, the illuminating lamp 6 is arranged inside the observation assembly, the observation assembly comprises an outer visible plate 21, an inner visible window 22, a hanging rack 24 and a fixing piece 25, the inner visible window 22 is fixedly connected with the chamber door body 1, the fixing piece 25 is fixedly connected with the chamber door body 1, the hanging rack 24 is fixedly connected with the outer visible plate 21, and along the thickness direction of the chamber door body 1, the hanging rack 24 is located outside the orthographic projection of the inner visible window 22, the hanging rack 24 is detachably connected with the fixing piece 25, and the hanging rack 24 or the outer visible plate 21 is snap-connected or magnetically attracted with the chamber door body 1.

[0039] The lighting lamp 6 is installed inside the observation assembly to stably provide sufficient illumination for observation. The inner visible window 22 is fixedly connected to the cabinet door body 1, the fixing member 25 is connected to the cabinet door body 1, the hanger 24 is connected to the outer visible plate 21, and the hanger 24 is located outside the orthographic projection of the inner visible window 22 along the thickness direction of the cabinet door body 1 to avoid blocking the observation line of sight. The hanger 24 is detachably connected to the fixing member 25, and the hanger 24 or the outer visible plate 21 is clamped or magnetically attracted to the cabinet door body 1. This structural design enables the outer visible plate 21 to be flexibly rotated and conveniently detached. When the lighting lamp 6 inside the observation assembly needs to be maintained or replaced, the operator only needs to pull the outer visible plate 21 to release the locking state between the outer visible plate 21 and the cabinet door body 1. Then, the hanger 24 is detached from the fixing member 25, the outer visible plate 21 is separated from the inner visible window 22, and the internal lighting lamp 6 can be maintained or replaced. This design avoids the traditional complex disassembly method, greatly simplifies the maintenance process, improves the maintenance efficiency of the environmental test chamber, reduces the equipment downtime, reduces the maintenance cost, and also provides more convenient use experience for the operator, and ensures the continuous and effective observation of the interior of the environmental test chamber.

[0040] In the embodiment, the lighting lamp 6 is installed on the inner wall of the inner visible window 22 to facilitate observation of the internal condition of the cabinet. In other embodiments, the lighting lamp 6 can also be installed on the inner side wall of the outer visible plate 21 to also provide illumination for the internal condition of the cabinet.

[0041] Specifically, the operator tightly adheres to the surface of the outer visible plate 21 by means of a suction cup with strong adsorption function, and uses the adsorption force of the suction cup to provide a stable and easy-to-exert force point. At the same time, the suction cup material has anti-slip and anti-scratch properties to avoid damaging the surface of the outer visible plate 21.

[0042] Specifically, the outer visible plate 21 is made of tempered glass, which has high strength, high impact resistance, good thermal stability, and high safety.

[0043] As Figures 1-3As shown, the bracket 24 includes a connecting shaft 242, and the fixing component 25 includes a U-shaped groove 251. The bottom of the U-shaped groove 251 has an arc-shaped concave surface with a radius equal to that of the connecting shaft 242. The connecting shaft 242 can abut against the arc-shaped concave surface and can disengage from the top of the U-shaped groove 251. When the external viewing panel 21 is in the normal installation state, the connecting shaft 242 abuts tightly against the arc-shaped concave surface at the bottom of the U-shaped groove 251, so that the external viewing panel 21 is stably connected to the door body 1, ensuring the stability and sealing of the overall structure of the observation component. When it is necessary to maintain or replace the internal lighting 6 of the observation component, the operator first releases the snap-fit ​​or magnetic engagement between the bracket 24 and the door body 1, and then rotates the external viewing panel 21 with the contact point between the connecting shaft 242 and the arc-shaped concave surface as the fulcrum. During rotation, a gap gradually forms between the outer viewing panel 21 and the inner viewing window 22, allowing the operator to more easily apply force to disengage the connecting shaft 242 from the top of the U-shaped groove 251, thus smoothly removing the outer viewing panel 21. This convenient operation method enhances the operator's experience, reduces operational difficulty, and enables a rapid response when maintenance or replacement of the lighting lamp 6 is required, thereby ensuring continuous and effective observation of the interior of the enclosure.

[0044] Specifically, such as Figure 2 and Figure 3 As shown, the end of the bracket 24 is provided with two first connecting plates 243 spaced apart, and the two ends of the connecting shaft 242 are respectively connected to the two first connecting plates 243. The fixing member 25 includes a mounting plate 252 and two second connecting plates 254 connected to the mounting plate 252. The two connecting plates are spaced apart and are perpendicular to the mounting plate 252, and each of the second connecting plates 254 is provided with a U-shaped groove 251. When the external visible panel 21 is in the normal installation state, the connecting shaft 242 abuts against the bottom wall of the U-shaped groove 251, and at the same time, the inner side wall of the first connecting plate 243 abuts against the outer side wall of the second connecting plate 254, effectively preventing the bracket 24 and the fixing member 25 from shaking.

[0045] Furthermore, such as Figure 3 As shown, the connecting shaft 242 is provided with limiting members 2421 at both ends. The limiting members 2421 abut against the outer side walls of the two first connecting plates 243 respectively, and are used to restrict the movement of the connecting shaft 242 in the axial direction. The limiting members 2421 can be elastic retaining rings or shoulder retaining rings, etc.

[0046] Furthermore, such as Figure 2 As shown, the mounting plate 252 is provided with mounting holes 253. The mounting plate 252 is bolted to the box door body 1 through the mounting holes 253 to achieve a stable connection.

[0047] like Figure 3As shown, the hanger 24 and the cabinet door body 1 are provided with an impact type door buckle or a magnetic type door buckle. The impact type door buckle is stable and reliable in connection, simple and direct in operation, and improves the maintenance efficiency. The magnetic type door buckle is based on magnetic attraction, and the attraction is quiet and rapid. When opened, the magnetic force can be overcome to separate, which improves the convenience of use.

[0048] Specifically, in the present embodiment, as shown in the figure, Figure 3 The observation assembly includes a buckle seat 231 and a buckle tongue 232. The buckle seat 231 is connected with the cabinet door body 1, and the buckle tongue 232 is connected with the hanger 24. The buckle seat 231 is block-shaped and has a smooth surface. The inside has a clamping groove that accurately matches the buckle tongue 232. The head of the buckle tongue 232 is smooth, which facilitates insertion into the clamping groove. The buckle seat 231 and the buckle tongue 232 cooperate to provide stable connection and convenient operation for the outer visible plate 21. Here, the impact type door buckle and the magnetic type door buckle will not be described in detail.

[0049] In other embodiments, the buckle tongue 232 can also be connected with the outer visible plate 21, and the buckle seat 231 is connected with the cabinet door body 1. Similarly, the clamping or magnetic attraction of the outer visible plate 21 and the cabinet door body 1 can be achieved.

[0050] As shown in the figure, Figure 3 The hanger 24 also includes a support plate 241, which is adhesively connected with the outer visible plate 21. The support plate 241 is provided with a plurality of through holes 2411. The plurality of through holes 2411 are used to increase the adhesive area of the support plate 241 and the outer visible plate 241. The through holes 2411 increase the surface area of the support plate 241, so that the glue forms a similar "rivet" structure after flowing in, and it is beneficial to the uniform distribution of glue. This enhances the stability of the connection between the outer visible plate 21 and the hanger 24, and improves the structural reliability of the observation assembly. Moreover, the adhesive connection method can avoid damaging the outer visible plate 21 and ensure the structural strength of the outer visible plate 21. Specifically, one side of the support plate 241 is adhesively connected with the outer visible plate 21 through glass glue, and the opposite side of the support plate 241 is connected with the first connecting plate 243. In other embodiments, the support plate 241 and the outer visible plate 21 can also be connected by bolts.

[0051] Specifically, as shown in the figure, Figure 3 The shape of the through hole 2411 can be circular, polygonal, irregular, etc. Here, the shape and number of the through hole 2411 are not limited.

[0052] Specifically, as shown in the figure, Figure 3 The hanger 24 also includes a reinforcing plate 244, which is arranged perpendicularly to the support plate 241 along the length direction of the support plate 241, and is located between the first connecting plate 243 and the buckle tongue 232. The reinforcing plate 244 can effectively disperse stress and prevent the support plate 241 from deforming and being damaged, thereby ensuring the stability and reliability of the hanger 24.

[0053] In the present embodiment, as shown in Figure 1 and Figure 4 , the observation assembly is provided with two hangers 24 and two fixing members 25, the fixing members 25 are connected with the cabinet door body 1 and located at opposite sides of the inner viewing window 22, and the hangers 24 correspond to the fixing members 25 one by one. When the observation assembly is provided with only one hanger 24 and one fixing member 25, the stress point of the outer viewing plate 21 is relatively single, and in daily use, the impact force generated when the cabinet door is opened and closed, slight vibration of the external environment and the like are all likely to cause the outer viewing plate 21 to shake or deviate around the stress point, thereby affecting the overall stability of the observation assembly. By providing two hangers 24 and two fixing members 25, the outer viewing plate 21 has two symmetrical stress support points, which can evenly disperse various external forces received by the outer viewing plate 21, thereby greatly enhancing the stability of the structure of the observation assembly.

[0054] As shown in Figure 1 , Figure 4 and Figure 5 , the cabinet door body 1 includes an outer panel 11, the outer panel 11 is provided with a mounting groove 111, the groove bottom of the mounting groove 111 is provided with a through hole, the inner viewing window 22 is fixed in the through hole, the fixing member 25 is mounted on the bottom wall of the mounting groove 111, and the outer viewing plate 21 is flush with the outer panel 11. This design can reasonably place the fixing member 25 inside the cabinet door, avoid the fixing member 25 protruding on the surface of the cabinet door, thereby fully utilizing the internal space of the cabinet door and making the overall structure of the cabinet door more compact. The flush design of the outer viewing plate 21 and the outer panel 11 makes the appearance of the cabinet door more flat and beautiful, and also makes the connection between the outer viewing plate 21 and the cabinet door body 1 more compact, thereby improving the sealing and stability of the cabinet door. In use, the mounting groove 111 provides a stable space for operating the fixing member 25, the flush design avoids collision and scratching, facilitates cleaning and reduces the accumulation of dust and sundries.

[0055] As shown in Figures 4-6 , the inner viewing window 22 includes a window frame 221, an inner viewing plate 222 and a heat insulation frame 224, and the cabinet door body 1 further includes an inner panel 13. One end of the window frame 221 is connected with the bottom wall of the mounting groove 111, the other end of the window frame 221 is connected with one side of the heat insulation frame 224, the other side of the heat insulation frame 224 is connected with the inner panel 13, and the window frame 221 and the heat insulation frame 224 surround the four sides of the inner viewing plate 222. The structural layout of the inner viewing window 22 prolongs the heat transfer path, reduces heat conduction by matching the heat insulation frame 224, effectively improves the heat preservation and insulation performance, and reduces the influence of temperature change in the cabinet on the illuminating lamp 6. At the same time, the window frame 221 surrounds the inner viewing plate 222 and is connected with the bottom wall of the mounting groove 111 and the heat insulation frame 224, forming a stable structural system, which can effectively resist external impact and vibration and prevent the inner viewing plate 222 from displacement, deformation or damage in daily use.

[0056] Specifically, the inner visible plate 222 is made of conductive glass. The conductive glass includes two or more layers of glass arranged at intervals, and a conductive film is sandwiched between adjacent two layers of glass. The conductive film in the middle of the conductive glass plays roles such as heating and defrosting, while the multi-layer glass structure enhances the strength, sound insulation and heat insulation performance of the glass.

[0057] Specifically, the heat-insulating frame 224 is made of a glass fiber board, also known as a fiberglass board (FR-4), which has high mechanical properties and dielectric properties, good heat resistance and moisture resistance, good processability, and a small thermal conductivity of the glass fiber, having a good heat insulation effect to block thermal conduction, thereby reducing the heat conduction between the window frame 221 and the external environment.

[0058] In this embodiment, as Figure 5 shown, the door body 1 further includes a heat-insulating layer 12. The heat-insulating layer 12 is located between the outer panel 11 and the inner panel 13 and surrounds the periphery of the inner visible window 22. The setting of the heat-insulating layer 12 can reduce the heat transfer between the inside and outside of the box body, maintain the temperature inside the box body, and can also reduce the heat transfer to the inside of the inner visible window 22, reduce the influence on the lighting lamp 6, and extend the service life of the lighting lamp 6. Specifically, the material of the outer panel 11 is selected as sheet metal, the material of the heat-insulating layer 12 is selected as heat-insulating cotton, and the material of the inner panel 13 is selected as stainless steel.

[0059] As Figure 5 and Figure 6 shown, the inner visible window 22 further includes an inner cover plate 223. The inner cover plate 223 is connected to the inner panel 13 and covers the four peripheral edges of the inner visible plate 222. The two ends of the inner visible plate 222 are respectively abutted against the window frame 221 and the inner cover plate 223. The inner cover plate 223 can limit the position of the inner visible plate 222 in the thickness direction of the door, effectively improving the connection stability. [[ID=XX]] [[ID=XX]]

[0060] Specifically, as Figure 5 and Figure 6 shown, the inner cover plate 223 is in a "hui" shape. The internal opening area of the inner cover plate 223 is smaller than the end face area of the inner visible plate 222, so as to be able to abut against the four peripheral edges of the end face of the inner visible plate 222. The top of the inner cover plate 223 is bent in the direction away from the inner panel 13 to form a water blocking strip 2231. The water blocking strip 2231 is arranged at an angle with the inner panel 13. During the operation of the environmental test chamber, condensed water is generated inside the box body. The water blocking strip 2231 can guide the condensed water to flow to the opposite sides of the observation component, preventing it from flowing to the inner visible window 22 and blocking the line of sight.

[0061] As Figure 6As shown, the window frame 221 comprises a first frame 2211 and a second frame 2212 connected together, the first frame 2211 is located between the bottom wall of the mounting groove 111 and the outer visible plate 21, the inner wall of the first frame 2211 is used for mounting the illuminating lamp 6, and the second frame 2212 is used for surrounding the inner visible plate 222. The design of the first frame 2211 and the second frame 2212 effectively utilizes the limited space of the cabinet door. At the same time, the illuminating lamp 6 is installed close to the outer visible plate 21, which facilitates the replacement of the illuminating lamp 6, and also ensures that the temperature in the test chamber has as little influence as possible on the illuminating lamp 6, thereby prolonging the service life of the illuminating lamp 6.

[0062] Specifically, as shown in Figure 6 The end face size of the first frame 2211 is smaller than that of the second frame 2212, a partition is formed at the connection between the first frame 2211 and the second frame 2212, and the partition is used for abutting against the inner visible plate 222. The window frame 221 is welded by sheet metal, and partition holes 22121 are arranged at the circumferential side of the second frame 2212, which are used for reducing the heat conduction between the inside of the cabinet and the external environment caused by the window frame 221.

[0063] Further, as shown in Figure 1 The illuminating lamp 6 is installed on the top of the first frame 2211, and the illuminating lamp 6 faces the inside of the cabinet. The illuminating lamp 6 can provide uniform illumination from top to bottom, reduce shadows, and facilitate observation of details and changes of the test sample. In other embodiments, the illuminating lamp 6 can also be installed around the first frame 2211, which can make the light rays shoot from multiple angles to the inside of the cabinet, further enhancing the overall lighting effect.

[0064] Further, as shown in Figure 6 The first frame 2211 and the second frame 2212 are both provided with electric wire penetrating holes 2213, the electric wire penetrating holes 2213 on the first frame 2211 are used for laying electric wires for the illuminating lamp 6 installed on the inner wall thereof, which facilitates power supply for the illuminating lamp 6 and connection of related control lines, ensures stable work of the illuminating lamp 6, and provides good lighting conditions for observing the inside of the cabinet. The electric wire penetrating holes 2213 on the second frame 2212 are used for laying electric wires for the inner visible plate 222, so that the inner visible plate 222 can be heated by conduction. In this way, frost generated due to temperature change can be effectively removed, the line of sight is avoided from being blocked, and the normal observation function of the inner visible plate 222 is ensured.

[0065] The working process of replacing the illuminating lamp 6 of the cabinet door of the embodiment is as follows:

[0066] Firstly, the corresponding position of the outer visible plate 21 and the buckle tongue 232 is adsorbed by the suction cup, the operator exerts pulling force on the outer visible plate 21, so that the buckle tongue 232 is separated from the buckle seat 231, then the outer visible plate 21 is pulled, so that the outer visible plate 21 and the outer panel 11 generate a gap, then the operator holds the outer visible plate 21, so that the connecting shaft 242 on the hanger 24 moves along the groove wall of the U-shaped groove 251 of the fixing piece 25, until the outer visible plate 21 is completely separated from the cabinet door.

[0067] The illuminating lamp 6 is replaced, after the replacement is completed, the outer visible plate 21 is re-aligned to the installation position of the cabinet door, the connecting shaft 242 on the hanger 24 is accurately fallen into the U-shaped groove 251 of the fixing piece 25, then the outer visible plate 21 is slowly put down, so that the outer visible plate 21 is attached to the outer panel 11, then the outer visible plate 21 is gently pushed, so that the buckle tongue 232 is accurately clamped into the buckle seat 231, and the tight connection between the buckle tongue 232 and the buckle seat 231 is ensured.

[0068] Obviously, the above embodiments of the utility model are only for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For the ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not to be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A box door, characterized in that The box door body (1), the illuminating lamp (6) and the observation assembly, the observation assembly extends along the thickness direction of the box door body (1) and penetrates the two side surfaces of the box door body (1), the illuminating lamp (6) is arranged inside the observation assembly, the observation assembly includes the outer visible plate (21), the inner visible window (22), the hanger (24) and the fixing part (25), the inner visible window (22) is fixedly connected with the box door body (1), the fixing part (25) is fixedly connected with the box door body (1), the hanger (24) is fixedly connected with the outer visible plate (21), and along the thickness direction of the box door body (1), the hanger (24) is located outside the orthographic projection of the inner visible window (22), the hanger (24) is detachably connected with the fixing part (25), and the hanger (24) or the outer visible plate (21) is clamped or magnetically attracted with the box door body (1).

2. The cabinet door of claim 1, wherein, The hanger (24) includes a connecting shaft (242), the fixing part (25) includes a U-shaped groove (251), the bottom of the U-shaped groove (251) is provided with a circular arc-shaped concave surface with a radius equal to that of the connecting shaft (242), and the connecting shaft (242) can abut against the circular arc-shaped concave surface and can be separated from the U-shaped groove (251).

3. The cabinet door of claim 1, wherein, An impact type door buckle or a magnetic type door buckle is arranged between the hanger (24) and the box door body (1).

4. The cabinet door of claim 1, wherein, The hanger (24) further includes a support plate (241), the support plate (241) is adhesively connected with the outer visible plate (21), and the support plate (241) is provided with a plurality of through holes (2411) at intervals.

5. The cabinet door of claim 1, wherein, The observation assembly is provided with two hangers (24) and two fixing parts (25), the fixing parts (25) are connected with the box door body (1) and located on opposite sides of the inner visible window (22), and the hangers (24) correspond to the fixing parts (25) one by one.

6. A cabinet door according to any one of claims 1-5, characterized in that The box door body (1) includes an outer panel (11), the outer panel (11) is provided with a mounting groove (111), the bottom wall of the mounting groove (111) is provided with a through hole, the inner visible window (22) is fixed in the through hole, the fixing part (25) is mounted on the bottom wall of the mounting groove (111), and the outer visible plate (21) is arranged flush with the outer panel (11).

7. The cabinet door of claim 6, wherein, The inner visible window (22) includes a window frame (221), an inner visible plate (222) and a heat insulation frame (224), the box door body (1) further includes an inner panel (13), one end of the window frame (221) is connected with the bottom wall of the mounting groove (111), the other end of the window frame (221) is connected with one side of the heat insulation frame (224), the other side of the heat insulation frame (224) is connected with the inner panel (13), and the window frame (221) and the heat insulation frame (224) surround the periphery of the inner visible plate (222).

8. The cabinet door of claim 7, wherein, The inner visible window (22) further comprises an inner cover plate (223) connected with the inner panel (13) and covering the four peripheral edges of the inner visible plate (222).

9. The cabinet door of claim 7, wherein, The window frame (221) comprises a first frame (2211) and a second frame (2212) connected with each other, the first frame (2211) is located between the bottom wall of the mounting groove (111) and the outer visible plate (21), and an inner wall of the first frame (2211) is provided with the illuminating lamp (6), and the second frame (2212) surrounds the inner visible plate (222).

10. Environmental test chamber, characterized in that The cabinet door is used for opening or closing the opening of the cabinet, and the observation assembly is used for observing the inner cavity of the cabinet.

Images