Plug-in type case board card guide rail strip
By using the guide rail body made of polytetrafluoroethylene material and combining the metal shell and conductive structure, the problem of lag and electrostatic discharge during the plug-in chassis board guide rail is solved, and a safe and stable plug-in and extraction process and electrostatic discharge effect is achieved.
Patent Information
- Application Number
- CN202421751712.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing plug-in chassis guides are prone to lag and poor electrostatic discharge during the plug-in process, resulting in damage to the board and safety hazards.
The guide rail body made of polytetrafluoroethylene material is provided with a metal shell and conductive structure on its outer wall, including metal springs, metal blocks, and metal balls. Through these structures, electrostatic discharge is achieved during insertion and removal, and friction is reduced to avoid lag.
It effectively avoids lag and scratches during plugging and unplugging of the board, and ensures that the static electricity is safely discharged to the ground through the electrostatic discharge structure, protecting the board and other circuits of the equipment.
Smart Images
Figure CN222803239U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of card-insertion type chassis, in particular to a card-insertion type chassis board card guide rail. Background Art
[0002] Many chassis in the equipment room use card-type chassis equipment, so that they can quickly eliminate, repair, and replace faults, so that the equipment can be restored in a very short time. At present, the board rails used in such card-type equipment are divided into two types: metal and plastic. These two types of rails have their own advantages and disadvantages.
[0003] Advantages of metal rails: When plugging and unplugging boards, static electricity generated by the human body or other situations can be discharged to the ground through the device housing, thereby protecting the safety of the boards and other circuits in the device; Disadvantages: The metal rails are hard and the metal edges of the boards that discharge static electricity can be easily scratched during plugging and unplugging, which can sometimes cause plugging and unplugging jams, resulting in damage to the boards;
[0004] Advantages of plastic guide rails: Plastic guide rails are soft and will not scratch the boards or cause jams during plugging and unplugging; Disadvantages: The static electricity generated cannot be quickly discharged during the plugging and unplugging process, which will cause great safety hazards to the boards and other circuits of the equipment. Therefore, the existing metal and plastic guide rails need to be improved. Utility Model Content
[0005] The utility model aims to provide a card guide rail for a card-insertion type chassis to solve the problems raised in the above-mentioned background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A card-insertion chassis board guide rail, comprising a PCB board, electrostatic discharge metal edges on both sides of the PCB board, and a guide rail body with a slot installed on a metal wall of a device, wherein the electrostatic discharge metal edge is plugged into and matched with the guide rail body, the guide rail body is made of polytetrafluoroethylene material, the outer wall of the guide rail body is fixedly connected with a metal shell, and a conductive structure for connecting the metal shell and the electrostatic discharge metal edge is also provided on the guide rail body.
[0008] It is worth noting that the conductive structure includes a metal spring, a metal block, and a metal ball. The top and bottom of the outer wall of the guide rail body are provided with accommodating grooves, the top and bottom of the inner wall of the guide rail body are respectively provided with through holes connected to the accommodating grooves on the top and bottom of the outer wall. The metal block of the metal spring is arranged in the accommodating groove, one end of the metal spring is fixedly connected to the metal shell, and the other end is fixedly connected to the metal block, the metal ball is fixedly connected to the metal block, and the end of the metal ball away from the metal block extends through the through hole to the slot of the guide rail body.
[0009] It is worth noting that mounting ears are provided at both ends of the guide rail body, the mounting ears are integrally formed with the guide rail body, and mounting holes are provided on the mounting ears.
[0010] It is worth noting that a metal shell is fixedly connected to a side of the mounting ear close to the metal wall of the device.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] The card-insertion chassis board guide rail has a conductive structure and a guide rail body made of polytetrafluoroethylene material, and a metal shell is arranged on the outer wall of the guide rail body. When the PCB board is plugged in or out, the friction force generated between the PCB board and the guide rail body is similar to rolling friction, and the resistance is very small, which effectively avoids the jamming and scratching phenomena when the PCB board is plugged in or out. When the PCB board is plugged in or out, if static electricity is generated, the static electricity can be transferred to the metal ball through the static electricity discharge metal edge, and the metal ball is transferred to the metal block and the metal spring, and then to the metal shell, and then to the metal wall of the equipment, and finally to the ground to realize static electricity discharge. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0014] Figure 2 It is a structural schematic diagram of the guide rail main body in the utility model.
[0015] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.
[0016] The meanings of the numbers in the figure are: 10, PCB board; 11, electrostatic discharge metal edge; 2, equipment metal wall; 30, guide rail body; 300, receiving groove; 31, mounting ear; 4, metal shell; 50, metal spring; 51, metal block; 52, metal ball. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] The utility model provides a technical solution:
[0019] A card-insertion chassis board rail, see Figure 1-Figure 3, including a PCB board 10, both sides of the PCB board 10 are fixedly connected with electrostatic discharge metal edges 11, and a guide rail body 30 with a slot installed on the metal wall 2 of the equipment, and the electrostatic discharge metal edge 11 is plugged and matched with the guide rail body 30;
[0020] In actual use, the guide rail bodies 30 are symmetrically arranged on both sides of the metal wall 2 of the equipment, and the electrostatic discharge metal edges 11 on both sides of the PCB board 10 are respectively slidably plugged into the two guide rail bodies 30 .
[0021] When the electronic components on the PCB board are damaged and need to be repaired, the PCB board can be pulled out for repair.
[0022] In the utility model, the guide rail body 30 is made of polytetrafluoroethylene material. The guide rail body 30 made of polytetrafluoroethylene material has the softness of a plastic guide rail. When plugging and unplugging a PCB board, the friction generated during plugging and unplugging is similar to rolling friction, and the resistance is very small, which effectively avoids the jamming and scratching phenomenon when plugging and unplugging a PCB board.
[0023] In addition, the guide rail body eliminates the problem of easy aging and fracture in extreme temperature environments: it mainly utilizes the physical properties and stable chemical properties of polytetrafluoroethylene materials. This material can work normally in the range of 250℃ to -190℃ (stable mechanical properties); in addition, it is resistant to strong acids and alkalis and is insoluble in any organic solutions, thus ensuring that the guide rail body can be used for a long time in extreme temperature environments.
[0024] The outer wall of the guide rail body 30 is fixedly connected to the metal shell 4. The outer wall of the guide rail body 30 provided with the metal shell 4 at least includes the top outer wall, the bottom outer wall and the outer wall of the guide rail body 30 away from the PCB board.
[0025] The guide rail body 30 is also provided with a conductive structure for connecting the metal housing 4 and the static discharge metal edge 11. In this way, when the PCB board is plugged in or out, if static electricity is generated, the static electricity can be conducted to the metal housing 4 through the conductive structure, and then conducted from the metal housing 4 to the metal wall 2 of the device. Since the metal wall 2 of the device is connected to the ground (installation), the static electricity is discharged to the ground, thereby effectively avoiding the influence of static electricity on the PCB board and other circuits of the device.
[0026] The conductive structure includes a metal spring 50, a metal block 51, and a metal ball 52. The outer wall top and the outer wall bottom of the guide rail body 30 are both provided with a receiving groove 300. The inner wall top and the inner wall bottom of the guide rail body 30 are respectively provided with through holes connected with the receiving groove 300 on the outer wall top and the outer wall bottom, that is, the through hole on the inner wall top of the guide rail body 30 is connected with the receiving groove 300 on the outer wall top of the guide rail body 30, and the through hole on the inner wall bottom of the guide rail body 30 is connected with the receiving groove 300 on the outer wall bottom of the guide rail body 30.
[0027] See also Figure 3 As shown, the metal blocks 51 of the metal spring 50 are all arranged in the accommodating groove 300, and the metal spring 50 is always in a compressed state. One end of the metal spring 50 is fixedly connected to the metal shell 4, which can be welded, and the other end is fixedly connected to the metal block 51, which can be welded. The metal ball 52 is fixedly connected to the metal block 51, which can be welded, and the end of the metal ball 52 away from the metal block 51 passes through the through hole and extends slightly into the slot of the guide rail body 30.
[0028] It should be noted that the metal ball 52 abuts against the static discharge metal edge 11 .
[0029] In the utility model, the conductive structure is preferably 4 groups, which are provided at the top and bottom near both ends of the guide rail body 30, so that it can be ensured that the metal ball 52 can abut the electrostatic discharge metal edge 11 during almost the entire process of plugging and unplugging the PCB board, so that static electricity can be discharged no matter where it is generated during the entire process.
[0030] Both ends of the guide rail body 30 are provided with mounting ears 31, the mounting ears 31 are integrally formed with the guide rail body 30, and mounting holes are provided on the mounting ears 31, so that the mounting ears 31 can be easily mounted on the metal wall of the equipment by bolts.
[0031] The metal shell 4 is fixedly connected to one side of the mounting ear 31 close to the metal wall 2 of the equipment. The metal shell 4 and the mounting ear 31 can be bonded, and the metal shell and the guide rail body can also be bonded.
[0032] The metal parts in the present invention can be made of copper.
[0033] When plugging and unplugging the PCB board 10, if static electricity is generated, the static electricity can be transferred to the metal ball 52 through the static electricity discharge metal edge 11, and the metal ball 52 is transferred to the metal block 51 and the metal spring 50, and then to the metal shell 4, and then to the metal wall 2 of the equipment, and finally to the ground to achieve static electricity discharge.
Claims
1. A card-insertion chassis board rail, comprising a PCB board (10), electrostatic discharge metal edges (11) on both sides of the PCB board (10), and a rail body (30) with a slot installed on a metal wall (2) of a device, wherein the electrostatic discharge metal edge (11) is plugged into and matched with the rail body (30), characterized in that: The guide rail body (30) is made of polytetrafluoroethylene material, the outer wall of the guide rail body (30) is fixedly connected to the metal shell (4), and the guide rail body (30) is also provided with a conductive structure for connecting the metal shell (4) and the static discharge metal edge (11).
2. The card guide rail of a card-insertion chassis according to claim 1, characterized in that: The conductive structure comprises a metal spring (50), a metal block (51), and a metal ball (52); the outer wall top and the outer wall bottom of the guide rail body (30) are both provided with a receiving groove (300); the inner wall top and the inner wall bottom of the guide rail body (30) are respectively provided with through holes communicating with the receiving groove (300) on the outer wall top and the outer wall bottom; the metal block (51) of the metal spring (50) is arranged in the receiving groove (300); one end of the metal spring (50) is fixedly connected to the metal shell (4), and the other end is fixedly connected to the metal block (51); the metal ball (52) is fixedly connected to the metal block (51); and the end of the metal ball (52) away from the metal block (51) passes through the through hole and extends into the slot of the guide rail body (30).
3. The card guide rail of a card-insertion chassis according to claim 1, characterized in that: Both ends of the guide rail body (30) are provided with mounting ears (31), the mounting ears (31) and the guide rail body (30) are integrally formed, and mounting holes are provided on the mounting ears (31).
4. The card guide rail of a card-insertion chassis according to claim 3, characterized in that: The side of the mounting ear (31) close to the metal wall (2) of the equipment is fixedly connected to the metal shell (4).