Electrostatic discharge device, printed circuit board operation method, and cabinet

Abstract

The present invention discloses an electrostatic discharge device, which belongs to the field of safety equipment. The electrostatic discharge device is arranged in a cabinet on which a printed circuit board is installed, and has an operating area on the printed circuit board. The electrostatic discharge device and the printed circuit board do not contact each other. The electrostatic discharge device includes: a fixing member, wherein the middle portion of one end of the fixing member extends away from the cabinet and forms a fixing portion; an electrostatic discharge plate hinged to the fixing portion, and the electrostatic discharge plate covers the operating area in a free state; the electrostatic discharge plate, hinge, fixing member, cabinet, and ground form an electrostatic discharge path. The beneficial effect of the present invention is that before operating the printed circuit board, the operator must first manually flip open the electrostatic discharge plate covering the operating area on the printed circuit board. When the electrostatic discharge plate is flipped open, the static electricity on the operator's body is discharged to the ground through the electrostatic discharge plate, hinge, fixing member, and cabinet in sequence.

Description

Technical Field

[0001] The present invention relates to the field of safety equipment, and in particular to an electrostatic discharge device, an operating method for a printed circuit board, and a cabinet. Background Art

[0002] Static electricity is a static charge. Discharging static electricity is designed to prevent static electricity accumulation from causing electric shock, fire and explosion, and electronic device failure and damage. Industrial product control printed circuit boards often contain multiple operating areas, such as push switches, toggle switches, and dip switches. When operating these devices, electrostatic protection measures must be implemented to prevent damage to the printed circuit board.

[0003] Currently, common ESD protection measures include the following: 1. The operator discharges static electricity through the product cabinet before touching the printed circuit board. This method relies on the operator to follow the standard operation and may lead to danger due to negligence; 2. Setting a discharge circuit at the edge of the sensitive device of the printed circuit board increases the area of ​​the printed circuit board and makes it difficult to fully identify the static discharge circuit on the printed circuit board, resulting in protection failure; 3. Using an anti-static switch for ESD protection, but the types of anti-static switches are limited and the cost is high; 4. Not setting a switch on the printed circuit board, but leading the switch to the operation box, the system is more complex and has too many lines, which increases the risk of failure and equipment cost. Therefore, in response to the above problems, it is urgent to design an ESD discharge device, a printed circuit board operation method, and a cabinet to meet the needs of actual use. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an electrostatic discharge device, an operating method for a printed circuit board, and a cabinet.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] The present invention provides an electrostatic discharge device, which is arranged in a cabinet on which a printed circuit board is installed. An operating area is provided on the printed circuit board for an operator to operate the printed circuit board. The electrostatic discharge device and the printed circuit board do not contact each other.

[0007] The electrostatic discharge device comprises:

[0008] a fixing member fixedly disposed on the cabinet, wherein a middle portion of one end of the fixing member extends away from the cabinet and forms a fixing portion;

[0009] an electrostatic release plate having a fixed end and a free end, the fixed end being hinged to the fixed portion by a hinge, and the electrostatic release plate covering an operating area on the printed circuit board through the free end in a free state;

[0010] The electrostatic release plate, the hinge, the fixing member, the cabinet and the ground form an electrostatic release path.

[0011] Preferably, the fixing member is arranged above the printed circuit board;

[0012] The upper end of the electrostatic release plate serves as the fixed end, and the lower end serves as the free end. When the electrostatic release plate is in the initial position, the free end droops to cover the operating area.

[0013] When the operator needs to operate the operating area, the operator flips the static electricity release plate upwards so that the static electricity release plate flips upwards around the hinge.

[0014] Preferably, the device further comprises a limiting component, which is used to limit the maximum turning angle of the electrostatic release plate when the electrostatic release plate is turned upward, so that when the operator releases the electrostatic release plate, the electrostatic release plate can return to its initial position;

[0015] The hinge is used to form the limiting component, and / or

[0016] A sheet metal component is arranged above the hinge and protrudes from the fixing portion to form the limiting component.

[0017] Preferably, the device further comprises a baffle, the baffle extending downward from the fixing member to be disposed between the printed circuit board and the electrostatic release plate;

[0018] When the operator releases the electrostatic release plate and the electrostatic release plate returns to its original position, the baffle is used to separate the printed circuit board and the electrostatic release plate to prevent the electrostatic release plate from hitting the printed circuit board.

[0019] Preferably, the fixing member is provided on one side of the printed circuit board;

[0020] An end of the electrostatic release plate close to the fixing member serves as the fixing end, and an end away from the fixing member serves as the free end. When the electrostatic release plate is in an initial position, the free end covers the operating area.

[0021] When the operator needs to operate the operating area, the operator flips over the electrostatic release plate so that the electrostatic release plate rotates around the hinge and toward the fixing member;

[0022] A spring is provided in the hinge. When the operator releases the electrostatic release plate, the spring resets to drive the electrostatic release plate to return to the initial position.

[0023] Preferably, the device further comprises a limiting component, which is used to limit the maximum turning angle of the electrostatic release plate when the electrostatic release plate turns toward the fixing member, so that when the operator releases the electrostatic release plate, the electrostatic release plate can return to its initial position;

[0024] The hinge is used to form the limiting component, and / or

[0025] A sheet metal part protruding from the fixing part is provided on one side of the hinge and forms the limiting component.

[0026] Preferably, the device further comprises a baffle, the baffle extending from the fixing member toward the free end of the electrostatic release device to be disposed between the printed circuit board and the electrostatic release plate;

[0027] When the operator releases the electrostatic release plate and the electrostatic release plate returns to its original position, the baffle is used to separate the printed circuit board and the electrostatic release plate to prevent the electrostatic release plate from hitting the printed circuit board.

[0028] Preferably, the fixing member and the hinge are both made of metal.

[0029] Preferably, the electrostatic release plate is made of metal.

[0030] The present invention also provides a method for operating a printed circuit board, which includes providing a cabinet in which the printed circuit board and the electrostatic discharge device as described above are installed;

[0031] The operation method includes:

[0032] Step S1: An operator flips over the electrostatic release plate to expose an operating area of ​​the printed circuit board;

[0033] Step S2, the operator operates the operating area of ​​the printed circuit board;

[0034] In step S3 , the operator puts down the electrostatic release plate so that the electrostatic release plate covers the operating area.

[0035] The present invention further provides a cabinet in which a printed circuit board and the electrostatic discharge device as described above are installed.

[0036] The beneficial effects of the present invention are:

[0037] The present invention provides a fixing member and an electrostatic release plate hinged to the fixing member. In a free state, the electrostatic release plate covers the operating area on the printed circuit board. Before an operator operates the printed circuit board, the operator must first manually flip open the electrostatic release plate. When the electrostatic release plate is flipped open, the operator's body static electricity is released in advance through the electrostatic release plate, hinge, fixing member and cabinet in sequence, and finally released to the ground grid, thereby protecting the printed circuit board from the harm of static electricity and avoiding the risk of failure of electronic components. The device has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a front view of Example 1 of the present invention;

[0039] Figure 2 This is a structural diagram of Example 1 of the present invention;

[0040] Figure 3 It is a front view of the second embodiment of the present invention;

[0041] Figure 4 This is a structural diagram of Example 2 of the present invention;

[0042] Figure 5 This is a front view of Example 3 of the present invention;

[0043] Figure 6 This is a structural diagram of Example 3 of the present invention;

[0044] Figure 7 This is a front view of the fourth embodiment of the present invention;

[0045] Figure 8 This is a structural diagram of Example 4 in the present invention. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0049] The present invention provides an electrostatic discharge device, which is installed in a cabinet on which a printed circuit board 1 is installed. An operating area is provided on the printed circuit board 1 for an operator to operate the printed circuit board 1. The electrostatic discharge device and the printed circuit board 1 do not contact each other.

[0050] The electrostatic discharge device includes:

[0051] A fixing member 2 is fixedly mounted on the cabinet, wherein a middle portion of one end of the fixing member 2 extends away from the cabinet and forms a fixing portion;

[0052] An electrostatic discharge plate 3 having a fixed end and a free end. The fixed end is hinged to the fixed portion via a hinge 4. When in a free state, the electrostatic discharge plate 3 covers the operating area on the printed circuit board 1 via the free end.

[0053] The electrostatic discharge plate 3 , the hinge 4 , the fixing member 2 , the cabinet and the ground form an electrostatic discharge path.

[0054] Specifically, the electrostatic discharge device is arranged in a cabinet, which can be used in elevator equipment. It should be noted that the electrostatic discharge device is not limited to use in elevator equipment. In this embodiment, the cabinet is made of metal conductive material, and the printed circuit board 1 is fixedly mounted on the side wall of the metal cabinet by fasteners such as screws or rivets. There is a certain distance of gap between the printed circuit board 1 and the cabinet, which is conducive to the heat dissipation of components on the printed circuit board 1. The printed circuit board 1 has an operating area, which includes operating elements such as push switches, toggle switches and dip switches, so that the operator can operate the printed circuit board 1 through the switch elements.

[0055] The electrostatic discharge device includes a fixing part 2 and an electrostatic discharge plate 3, wherein the fixing part 2 includes a fixing part body and a mounting part, the fixing part body and the mounting part are integrally formed, and the mounting part of the fixing part 2 is fixedly mounted on the metal cabinet by fasteners such as rivets or screws. The mounting part of the fixing part 2 is installed near the operating area on the printed circuit board 1. The mounting part can be arranged between the printed circuit board 1 and the metal cabinet, or on the side of the printed circuit board 1. The fixing part body and the mounting part are arranged at a certain angle. In an embodiment, the fixing part body and the mounting part are preferably arranged vertically, and the middle part of one end of the fixing part body extends back to the cabinet and forms a fixing part, wherein the fixing part 2 and the printed circuit board 1 are both installed on the cabinet, but do not contact each other.

[0056] Furthermore, the electrostatic release plate 3 includes a fixed end and a free end. The fixed end of the electrostatic release plate 3 is fixedly mounted to the first hinge 4 plate of the hinge 4 by fasteners such as screws or rivets, and the second hinge 4 plate of the hinge 4 is fixedly mounted to the fixed portion of the fixing member 2 by fasteners such as screws or rivets. Since the fixing member body has a certain width, when the free end of the electrostatic release plate 3 covers the operating area on the printed circuit board 1 in a free state, the electrostatic release plate 3 maintains a certain distance from the printed circuit board 1, thereby preventing the free end of the electrostatic release plate 3 from causing damage to electronic devices.

[0057] When the operator needs to operate the printed circuit board 1, he must first manually flip open the static discharge plate 3 before he can proceed with the operation steps. While flipping open the static discharge plate 3, the static electricity on the operator's body is led out through the static discharge plate 3, hinge 4, fixing part 2 and cabinet in sequence, and finally released into the ground grid, thereby protecting the printed circuit board 1 from static damage and avoiding the risk of electronic device failure. Through a simple mechanical setting, the static electricity on the operator's body is forcibly released without interfering with normal operation, thereby achieving low-cost static protection.

[0058] Four specific embodiments are now provided to illustrate and describe this technical solution:

[0059] Example 1

[0060] like Figure 1 and Figure 2 As shown, the electrostatic discharge device provided in this embodiment is disposed in a metal cabinet. A printed circuit board 1 is fixedly mounted on a side wall of the metal cabinet by fasteners such as screws or rivets. The fasteners provide a certain distance between the printed circuit board 1 and the cabinet. The printed circuit board 1 has an operating area, and an operator operates the printed circuit board 1 through switch elements in the operating area. The electrostatic discharge device includes a fixing member 2 and an electrostatic discharge plate 3. The mounting portion of the fixing member 2 is fixedly mounted on the metal cabinet by fasteners such as rivets or screws. The mounting portion of the fixing member 2 is mounted above and near the printed circuit board 1. The fixing member 2 does not contact the printed circuit board 1. The middle portion of one end of the fixing member 2 extends away from the cabinet to form a fixing portion.

[0061] The electrostatic discharge plate 3 includes a fixed end and a free end. The upper end of the electrostatic discharge plate 3 serves as the fixed end, and the lower end serves as the free end. The fixed end is fixed to the first hinge plate 4 of the hinge 4 by means of fasteners such as screws or rivets. The second hinge plate 4 of the hinge 4 is fixed to the fixed portion of the fixing member 2 by means of fasteners such as screws or rivets. When the free end of the electrostatic discharge plate 3 is in a free state, it covers the operating area on the printed circuit board 1 under the action of gravity and maintains a certain distance from the printed circuit board 1 to prevent the free end of the electrostatic discharge plate 3 from damaging electronic devices.

[0062] When the operator needs to operate the printed circuit board 1, he must first manually flip open the electrostatic release plate 3 and flip it upward around the hinge 4 until the operating area is exposed before operating the printed circuit board 1. While flipping open the electrostatic release plate 3, the operator's body static electricity is led out through the electrostatic release plate 3, hinge 4, fixing part 2 and cabinet in sequence, and finally released into the ground grid, preventing the components on the printed circuit board 1 from being damaged by static electricity and achieving electrostatic protection. The operator then operates the operating components of the printed circuit board 1. After the operation is completed, the operator manually resets the electrostatic release plate 3 so that the electrostatic release plate 3 covers the operating area.

[0063] Example 2

[0064] The electrostatic discharge device provided in the first embodiment may cause the user to forget to manually restore the electrostatic discharge plate 3 to its initial position after turning over the electrostatic discharge plate 3 to operate the operating area, and thus fail to release static electricity in advance before the next operation, thereby causing damage to the circuit board. The second embodiment provides an electrostatic discharge device, such as Figure 3 and Figure 4 As shown, a limiting component structure is added on the basis of the first embodiment. When the electrostatic release plate 3 is flipped upward, the limiting component is used to limit the maximum flipping angle of the electrostatic release plate 3 so that when the operator releases the electrostatic release plate 3, the electrostatic release plate 3 can return to its initial position;

[0065] Specifically, the second hinge plate of the hinge 4 is fixedly installed on the fixed part, and the guide groove of the hinge 4 is set toward the printed circuit board 1. When the electrostatic release plate 3 flips around the hinge 4 toward the fixed part 2, the maximum flipping angle of the electrostatic release plate 3 is limited by the second hinge plate of the hinge 4 and the fixed part, so that the electrostatic release plate 3 cannot automatically remain in the open state. It is necessary to manually flip the electrostatic release plate 3 continuously to operate the operating area. After the operator completes the operation, release the electrostatic release plate 3, and the electrostatic release plate 3 can automatically return to its initial position under the action of gravity, so as to avoid the operator forgetting to restore the electrostatic release plate 3 to its original state after the last operation on the printed circuit board 1.

[0066] In this embodiment, a preferred implementation is provided in which the end of the fixing portion extends to form a sheet metal member, which is fabricated by sheet metal processing and is lightweight, strong, and conductive. The sheet metal member serves as a limiting member, and the guide groove of the hinge 4 is disposed facing away from the printed circuit board 1. When the electrostatic discharge plate 3 flips about the hinge 4 toward the fixing member 2, the sheet metal member limits the maximum flipping angle of the electrostatic discharge plate 3. This ensures that the electrostatic discharge plate 3 automatically returns to its initial position after each operation, preventing the operator from forgetting to manually reset it and failing to discharge static electricity before the next operation. Due to the provision of the limiting member, the operator must touch the electrostatic discharge device before each operation on the printed circuit board 1. This conducts static electricity from the operator's body through the electrostatic discharge plate 3, hinge 4, fixing member 2, and cabinet in sequence, and ultimately discharges it into the ground grid. However, during continuous operation, the operator needs to manually flip the electrostatic discharge plate 3 open. After each operation, the electrostatic discharge plate 3 automatically returns to its original position, thereby achieving comprehensive electrostatic protection.

[0067] Example 3

[0068] In the electrostatic release device provided in the above-mentioned embodiment 1 and embodiment 2, after the electrostatic release plate 3 is flipped over to operate the operating area, when the electrostatic release plate 3 returns to its original position, due to the action of inertia force, the electrostatic release plate 3 may hit the printed circuit board 1 during the swinging process and cause damage to the circuit board.

[0069] The third embodiment provides an electrostatic discharge device, such as Figure 5 and Figure 6 As shown, a baffle structure is added on the basis of the first and second embodiments. Both sides of one end of the fixing body extend toward one side of the printed circuit board 1 and form a baffle. The baffle is arranged between the printed circuit board 1 and the electrostatic release plate 3. The baffle and the fixing member 2 are arranged at a certain angle. Preferably, in this embodiment, the baffle and the fixing member 2 are arranged at 90 degrees, so that when the electrostatic release plate 3 returns to its original state, the electrostatic release plate 3 is tightly attached to the baffle.

[0070] When the operator completes all operations, he releases the free end of the electrostatic release plate 3, allowing the electrostatic release plate 3 to return to its original position under the action of gravity. The electrostatic release plate 3 finally fits against the baffle, which restricts the electrostatic release plate 3 and prevents it from hitting the components on the printed circuit board 1.

[0071] Example 4

[0072] In the electrostatic release devices provided in Examples 1 to 3, the operating area on the printed circuit board 1 is located in the upper edge area. When the operating area is far away from the upper edge area, it will be inconvenient to set the electrostatic release plate 3 too large, and the cost will increase. In this case, the position of the electrostatic release device needs to be set according to actual needs.

[0073] Embodiment 4 provides an electrostatic discharge device. Based on embodiments 1 to 3, the electrostatic discharge device is arranged near the operating area on the printed circuit board 1. The fixing member is arranged on the side or bottom of the printed circuit board 1. The end of the electrostatic discharge plate 3 close to the fixing member 2 serves as the fixed end, and the end away from the fixing member 2 serves as the free end. When the electrostatic discharge plate 3 is in the initial position, the free end covers the operating area. At this time, since the electrostatic discharge plate 3 cannot be restored to cover the operating area under the action of gravity after being opened, a spring is added to the hinge 4 in this embodiment. Preferably, the hinge 4 adopts a spring hinge 4, so that the electrostatic discharge plate 3 is in the initial position under the action of the spring elastic force. Figure 7 and Figure 8 As shown, the electrostatic release plate 3 has a large area so as to fully cover the dip switch at the upper left corner of the printed circuit board 1 and the small dip switch to the left of the dip switch, thereby preventing the electrostatic release plate 3 from not fully covering the entire area, causing the operator to directly dial the operating switch to operate, thereby damaging the circuit board.

[0074] When the operator needs to operate the operating area, the electrostatic discharge plate 3 is flipped around the hinge 4 toward the fixing member 2. The maximum flip angle of the electrostatic discharge plate 3 is limited by the hinge or sheet metal, preventing the electrostatic discharge plate 3 from flipping over too far and causing the spring in the hinge 4 to be unable to return to its original position. At the same time, due to the elastic force of the spring, the operator must first manually flip open the electrostatic discharge plate 3 to expose the switch in the operating area, facilitating the operator's operation. When the operator touches the electrostatic discharge plate 3, the static electricity on the operator's body is discharged to the ground through the electrostatic discharge plate 3, hinge 4, fixing member 2, and cabinet body in sequence, preventing the components on the printed circuit board 1 from being damaged by static electricity and achieving electrostatic protection. During the operation, the operator must use one hand to continuously flip open the electrostatic discharge plate 3 to expose the operating switch and complete the operation. When the operator completes the operation, the operator releases the electrostatic discharge plate 3, and the electrostatic discharge plate 3 returns to its original position under the elastic force of the spring. The electrostatic discharge plate 3 is restricted by the baffle and cannot rotate to hit the printed circuit board 1.

[0075] Furthermore, a shockproof buffer medium such as a buffer sponge may be added to the baffle. After the operation on the operating area is completed, the static discharge plate 3 is attached to the baffle under the buffering of the shockproof buffer medium, thereby extending the service life of the baffle.

[0076] In the present invention, as a preferred embodiment, the fixing part 2 and the hinge 4 in the electrostatic discharge device are both made of metal materials. The fixing part 2 and the hinge 4 are both made of conductive materials such as iron, copper, and aluminum. Conductive materials can easily discharge static electricity from the human body.

[0077] Similarly, the electrostatic discharge plate 3 in the electrostatic discharge device is also made of metal materials such as iron, copper, and aluminum.

[0078] The present invention also provides a method for operating a printed circuit board, which includes providing a cabinet in which a printed circuit board 1 and the electrostatic discharge device as described above are installed;

[0079] The operation methods include:

[0080] Step S1: When an operator needs to operate the operating area, the operator flips over the static discharge plate 3 to expose the operating area of ​​the printed circuit board 1;

[0081] Step S2, the operator operates the operating area of ​​the printed circuit board 1;

[0082] In step S3 , after the operator completes the operation, the operator puts down the static discharge plate 3 so that the static discharge plate 3 covers the operation area.

[0083] The present invention further provides a cabinet in which a printed circuit board 1 and the electrostatic discharge device as described above are installed.

[0084] The beneficial effects of the present invention are:

[0085] The present invention provides a fixing member and an electrostatic release plate hinged to the fixing member. In a free state, the electrostatic release plate covers the operating area on the printed circuit board. Before the operator operates the printed circuit board, the operator must first manually flip open the electrostatic release plate. When the electrostatic release plate is flipped open, the static electricity on the operator's body is released in advance through the electrostatic release plate, hinge, fixing member and cabinet in sequence, and finally released to the ground grid, thereby protecting the printed circuit board from damage by static electricity and avoiding the risk of failure of electronic components. The device has a simple structure and low cost.

[0086] The above description is only a preferred embodiment of the present invention and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrostatic discharge device, characterized in that: The electrostatic discharge device is arranged in a cabinet on which a printed circuit board is installed. An operating area is provided on the printed circuit board for an operator to operate the printed circuit board. The electrostatic discharge device and the printed circuit board do not contact each other. The electrostatic discharge device comprises: a fixing member fixedly disposed on the cabinet, wherein a middle portion of one end of the fixing member extends away from the cabinet and forms a fixing portion; an electrostatic release plate having a fixed end and a free end, the fixed end being hinged to the fixed portion by a hinge, and the electrostatic release plate covering an operating area on the printed circuit board through the free end in a free state; The invention also includes a limiting component, wherein the limiting component is used to limit the maximum flip angle of the electrostatic release plate, so that when the operator releases the electrostatic release plate, the electrostatic release plate can return to its initial position; The hinge is used to form the limiting component, and / or A sheet metal part protruding from the fixing part is provided above or on one side of the hinge to form the limiting part; When the operator needs to operate the operating area, the operator manually and continuously flips open the electrostatic release plate so that the electrostatic release plate flips around the hinge toward the fixing part, and the electrostatic release plate, the hinge, the fixing part, the cabinet and the ground form an electrostatic release path; after completing the operation, the operator releases the electrostatic release plate, and the electrostatic release plate returns to its initial position.

2. The electrostatic discharge device according to claim 1, wherein: The fixing member is arranged above the printed circuit board; The upper end of the electrostatic release plate serves as the fixed end, and the lower end serves as the free end. When the electrostatic release plate is in the initial position, the free end droops to cover the operating area. When the operator needs to operate the operating area, the operator flips the static electricity release plate upwards so that the static electricity release plate flips upwards around the hinge.

3. The electrostatic discharge device according to claim 2, characterized in that: When the electrostatic release plate flips upward, the limiting component is used to limit the maximum flipping angle of the electrostatic release plate, so that when the operator releases the electrostatic release plate, the electrostatic release plate can return to its initial position.

4. The electrostatic discharge device according to claim 2 or 3, characterized in that: Also included is a baffle extending downward from the fixing member to be disposed between the printed circuit board and the electrostatic release plate; When the operator releases the electrostatic release plate and the electrostatic release plate returns to its original position, the baffle is used to separate the printed circuit board and the electrostatic release plate to prevent the electrostatic release plate from hitting the printed circuit board.

5. The electrostatic discharge device according to claim 1, wherein: The fixing member is arranged on one side of the printed circuit board; An end of the electrostatic release plate close to the fixing member serves as the fixing end, and an end away from the fixing member serves as the free end. When the electrostatic release plate is in an initial position, the free end covers the operating area. When the operator needs to operate the operating area, the operator flips over the electrostatic release plate so that the electrostatic release plate rotates around the hinge and toward the fixing member; A spring is provided in the hinge. When the operator releases the electrostatic release plate, the spring resets to drive the electrostatic release plate to return to the initial position.

6. The electrostatic discharge device according to claim 5, characterized in that: When the electrostatic release plate flips toward the fixing member, the limiting component is used to limit the maximum flipping angle of the electrostatic release plate, so that when the operator releases the electrostatic release plate, the electrostatic release plate can return to its initial position.

7. The electrostatic discharge device according to claim 5 or 6, characterized in that: Also included is a baffle, the baffle extending from the fixing member toward the free end of the electrostatic release plate to be disposed between the printed circuit board and the electrostatic release plate; When the operator releases the electrostatic release plate and the electrostatic release plate returns to its original position, the baffle is used to separate the printed circuit board and the electrostatic release plate to prevent the electrostatic release plate from hitting the printed circuit board.

8. The electrostatic discharge device according to claim 1, wherein: The fixing member, the hinge and the electrostatic release plate are all made of metal.

9. A method for operating a printed circuit board, characterized in that: A cabinet is provided, wherein a printed circuit board and the electrostatic discharge device according to any one of claims 1 to 8 are installed in the cabinet; The operation method includes: Step S1: An operator flips over the electrostatic release plate to expose an operating area of ​​the printed circuit board; Step S2, the operator operates the operating area of ​​the printed circuit board; In step S3 , the operator puts down the electrostatic release plate so that the electrostatic release plate covers the operating area.

10. A cabinet, characterized in that: A printed circuit board and the electrostatic discharge device according to any one of claims 1 to 8 are installed in the cabinet.

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