Test box door frame structure corresponding to ESD (Electro-Static Discharge) electrostatic protection standard

Abstract

The utility model discloses a test box door frame structure corresponding to an ESD (Electro-Static Discharge) electrostatic protection standard. The test box door frame structure comprises a box body, the anti-static door frame is fixed at one end of the box body and comprises an aluminum alloy outer frame, a first groove, a ceramic fiber plate, a composite sealing strip, a second groove, a wiring terminal and a grounding wire, the aluminum alloy outer frame is fixed at one end of the box body through screws, the first groove is formed in the side edge of the aluminum alloy outer frame, the ceramic fiber plate is fixed in the first groove, and the composite sealing strip is fixed in the second groove. The composite sealing strip is fixed on the ceramic fiber plate, the second groove is formed in the side edge of the box body, one end of the wiring terminal is fixed in the second groove, one end of the grounding wire is fixed on the wiring terminal, and the other end of the grounding wire is attached to the composite sealing strip. The door frame solves the problems that only temperature and sealing performance are concerned on an existing common door frame, but sensitive devices can be damaged by static electricity at extreme temperature when electronic components, semiconductors, precise instruments and the like are subjected to static electricity sensitive tests.

Description

Technical Field

[0001] This utility model relates to the field of test chamber door frame technology, specifically a test chamber door frame structure corresponding to ESD electrostatic protection standards. Background Technology

[0002] The design and performance of the test chamber door frame directly affect the equipment's sealing, insulation, safety, and service life.

[0003] However, existing standard door frames only focus on temperature and sealing performance. When conducting tests on electrostatically sensitive electronic components, semiconductors, and precision instruments, extreme temperatures can cause electrostatic damage to these sensitive devices. Therefore, a test chamber door frame structure that conforms to ESD (Electrostatic Discharge) protection standards is needed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a test chamber door frame structure that conforms to ESD electrostatic protection standards, thereby solving the problems mentioned in the background art. To solve the above technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a test chamber door frame structure corresponding to ESD electrostatic protection standards, comprising:

[0006] Box;

[0007] An anti-static door frame, fixed to one end of a housing, includes an aluminum alloy outer frame, a first groove, a ceramic fiber board, a composite sealing strip, a second groove, a terminal block, and a grounding wire. The aluminum alloy outer frame is fixed to one end of the housing with screws. The first groove is located on the side of the aluminum alloy outer frame. The ceramic fiber board is fixed in the first groove, and the composite sealing strip is fixed on the ceramic fiber board. The second groove is located on the side of the housing, and the side of the composite sealing strip away from the ceramic fiber board is attached to the second groove. One end of the terminal block is fixed in the second groove and connected to the housing's own grounding system. One end of the grounding wire is fixed to the terminal block, and the other end is attached to the composite sealing strip.

[0008] Furthermore, the antistatic door frame also includes a heating element and a thermistor. The heating element is fixed in the second groove, and the power cord is connected to the power supply system of the enclosure. The thermistor is fixed in the second groove.

[0009] Furthermore, the antistatic door frame also includes a connecting ring and a connecting piece. The connecting ring is fixed to one end of the grounding wire and is sleeved on the terminal block and tightened by a nut. The connecting piece is fixed to the other end of the grounding wire and is attached to the composite sealing strip.

[0010] Furthermore, the aluminum alloy frame and ceramic fiberboard are coated with a conductive coating, the composite sealing strip is a fluororubber sealing strip, and an integrated copper mesh is used.

[0011] Furthermore, the surface of the heating element is sequentially wrapped with a flame-retardant film and a polyimide insulating film.

[0012] Furthermore, it also includes a compensation component, which includes a connecting nut and a spring post, the connecting nut being screwed onto the terminal block and the spring post being fixed to the connecting nut.

[0013] Furthermore, the connecting nut and the spring post are made of insulating plastic, and the connecting piece is fixed to the end of the spring post away from the connecting nut.

[0014] This utility model has the following beneficial effects:

[0015] This utility model features an anti-static door frame with a ceramic fiberboard installed inside an aluminum alloy outer frame, followed by a composite sealing strip. The copper mesh structure integrated into the composite sealing strip is connected to a grounding wire and a terminal block, which in turn is connected to the enclosure's own grounding system. This creates an anti-static grounding structure for the door frame. Simultaneously, when the temperature is below a set temperature, the heating element is energized and heats up; when the temperature exceeds the set temperature, it automatically cuts off the power. This design achieves electromagnetic shielding, prevents electrostatic coupling interference, integrates multi-point grounding to form a conductive path with the enclosure, and prevents leakage due to low-temperature condensation through the built-in heating element. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0018] Figure 2 This is a schematic diagram of the interior of the groove in this utility model;

[0019] Figure 3 This is a schematic diagram of the wiring terminal and compensation component of this utility model;

[0020] Figure 4 This is a schematic diagram of the aluminum alloy outer frame, ceramic fiber, and composite sealing strip of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 10. Housing; 20. Aluminum alloy frame; 21. First groove; 22. Ceramic fiberboard; 23. Composite sealing strip; 24. Second groove; 25. Terminal block; 26. Grounding wire; 260. Connecting ring; 261. Connecting piece; 27. Heating element; 28. Thermistor; 30. Connecting nut; 31. Spring post. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Please see Figure 1-4 As shown, this utility model is a test chamber door frame structure corresponding to ESD electrostatic protection standards, comprising:

[0026] Box 10;

[0027] It is used for testing and is equipped with a grounding system. The control system is installed on the upper part of the enclosure 10.

[0028] An anti-static door frame is fixed to one end of the enclosure 10. It includes an aluminum alloy outer frame 20, a first groove 21, a ceramic fiber board 22, a composite sealing strip 23, a second groove 24, a terminal block 25, and a grounding wire 26. The aluminum alloy outer frame 20 is fixed to one end of the enclosure 10 by screws. The first groove 21 is opened on the side of the aluminum alloy outer frame 20. The ceramic fiber board 22 is fixed in the first groove 21. The composite sealing strip 23 is fixed on the ceramic fiber board 22. The second groove 24 is opened on the side of the enclosure 10, and the other side of the composite sealing strip 23 away from the ceramic fiber board 22 is attached to the second groove 24. One end of the terminal block 25 is fixed in the second groove 24 and connected to the grounding system of the enclosure 10 itself. One end of the grounding wire 26 is fixed on the terminal block 25, and the other end is attached to the composite sealing strip 23.

[0029] The antistatic door frame also includes a heating element 27 and a thermistor 28. The heating element 27 is fixed in the second groove 24 and the power cord is connected to the power supply system of the box 10. The thermistor 28 is fixed in the second groove 24.

[0030] The antistatic door frame also includes a connecting ring 260 and a connecting piece 261. The connecting ring 260 is fixed to one end of the grounding wire 26 and is sleeved on the terminal block 25 and fastened by a nut. The connecting piece 261 is fixed to the other end of the grounding wire 26 and is attached to the composite sealing strip 23.

[0031] The aluminum alloy outer frame 20 and the ceramic fiber board 22 are coated with a conductive coating, and the composite sealing strip 23 is a fluororubber sealing strip with integrated copper mesh;

[0032] The surface of the heating element 27 is sequentially wrapped with a flame-retardant film and a polyimide insulating film;

[0033] The aluminum alloy frame 20 provides support and is coated with a conductive coating for conductivity and electromagnetic shielding. The first groove 21 is used to install the ceramic fiber board 22 and the composite sealing strip 23. The ceramic fiber board 22 is coated with a conductive coating to act as a thermal break, blocking the conduction of heat between the inside and outside. The composite sealing strip 23 is co-extruded from fluororubber and copper mesh, which both seals and conducts static electricity. The second groove 24 is used to install the grounding wire 26. The terminal 25 is connected to the grounding system of the enclosure 10. The grounding wire 26 is connected to the terminal 25 and the composite sealing strip 23 through the connecting ring 260 and the connecting piece 261, respectively, so that the aluminum alloy frame 20 and the enclosure 10 conduct static electricity. The heating element 27 is used to heat the area inside the second groove 24. The opening and closing of the heating element 27 can be controlled by the thermistor 28 or the temperature detection sensor inside the enclosure. When the temperature is ≤5℃, the heating element is automatically energized. When the temperature exceeds 15℃, the power is cut off to prevent overheating. At the same time, the heating element 27 is delayed by the control system of the enclosure 10 to start after a 10-second delay to avoid instantaneous current surges.

[0034] Working principle:

[0035] A ceramic fiber board 22 is installed in the first groove 21 on the side of the aluminum alloy outer frame 20, and a composite sealing strip 23 is installed. The copper mesh structure integrated by the composite sealing strip 23 is connected to the terminal 25 in the second groove 24 through the grounding wire 26. The terminal 25 is connected to the grounding system of the box 10 itself, so that the door frame forms an anti-static grounding structure. At the same time, the opening and closing of the heating element 27 is controlled by the thermistor 28 or the temperature detection sensor inside the box. When the temperature is lower than the set temperature, the heating element 27 is powered on and heats up. When the temperature exceeds the set temperature, it is automatically powered off.

[0036] This step enables electromagnetic shielding, prevents electrostatic coupling interference, integrates multi-point grounding, forms a conductive path with the enclosure, and prevents leakage caused by low-temperature condensation through built-in heating.

[0037] Please see Figure 3 As shown, this embodiment, based on the above embodiment, further includes:

[0038] The compensation assembly includes a connecting nut 30 and a spring post 31. The connecting nut 30 is screwed onto the terminal 25, and the spring post 31 is fixed onto the connecting nut 30.

[0039] The connecting nut 30 and the spring post 31 are made of insulating plastic, and the connecting piece 261 is fixed to the end of the spring post 31 away from the connecting nut 30;

[0040] The connecting nut 30 serves as a connector, and the spring post 31 has a telescopic function.

[0041] Working principle:

[0042] Place the connecting ring 260 onto the terminal block 25, tighten the nut, and hold the spring post 31 to screw the connecting nut 30 onto the terminal block 25. Secure the connecting piece 261 to the spring post 31 with screws. Install the ceramic fiber board 22 and the composite sealing strip 23. Then, secure the aluminum alloy frame 20 to the housing 10 with screws. The spring post 31 will hold the connecting piece 261 firmly against the composite sealing strip 23.

[0043] This step ensures the stability of the grounding wire 26 connection even when the composite sealing strip 23 is deformed due to temperature.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A test chamber door frame structure corresponding to ESD electrostatic protection standards, characterized in that, include: Box (10); An anti-static door frame, fixed to one end of the enclosure (10), includes an aluminum alloy outer frame (20), a first groove (21), a ceramic fiber board (22), a composite sealing strip (23), a second groove (24), a terminal block (25), and a grounding wire (26). The aluminum alloy outer frame (20) is fixed to one end of the enclosure (10) with screws. The first groove (21) is formed on the side of the aluminum alloy outer frame (20), and the ceramic fiber board (22) is fixed to the first groove (21). In the case, the composite sealing strip (23) is fixed on the ceramic fiber board (22), the second groove (24) is opened on the side of the box (10), and the other side of the composite sealing strip (23) away from the ceramic fiber board (22) is attached to the second groove (24). One end of the terminal (25) is fixed in the second groove (24) and connected to the grounding system of the box (10). One end of the grounding wire (26) is fixed on the terminal (25), and the other end is attached to the composite sealing strip (23).

2. The test chamber door frame structure corresponding to the ESD electrostatic protection standard according to claim 1, characterized in that: The antistatic door frame also includes a heating element (27) and a thermistor (28). The heating element (27) is fixed in the second groove (24), and the power cord is connected to the power supply system of the box (10). The thermistor (28) is fixed in the second groove (24).

3. The test chamber door frame structure corresponding to the ESD electrostatic protection standard according to claim 1, characterized in that: The antistatic door frame also includes a connecting ring (260) and a connecting piece (261). The connecting ring (260) is fixed to one end of the grounding wire (26) and is sleeved on the terminal block (25) and fastened by a nut. The connecting piece (261) is fixed to the other end of the grounding wire (26) and is attached to the composite sealing strip (23).

4. The test chamber door frame structure corresponding to the ESD electrostatic protection standard according to claim 1, characterized in that: The aluminum alloy outer frame (20) and ceramic fiber board (22) are coated with conductive coating, and the composite sealing strip (23) is a fluororubber sealing strip with integrated copper mesh.

5. The test chamber door frame structure corresponding to the ESD electrostatic protection standard according to claim 2, characterized in that: The surface of the heating element (27) is sequentially wrapped with a flame-retardant film and a polyimide insulating film.

6. The test chamber door frame structure corresponding to the ESD electrostatic protection standard according to claim 1, characterized in that: It also includes a compensation component, which includes a connecting nut (30) and a spring post (31), wherein the connecting nut (30) is screwed onto the terminal block (25) and the spring post (31) is fixed onto the connecting nut (30).

7. The test chamber door frame structure corresponding to the ESD electrostatic protection standard according to claim 6, characterized in that: The connecting nut (30) and the spring post (31) are made of insulating plastic, and the connecting piece (261) is fixed at the end of the spring post (31) away from the connecting nut (30).

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