PCB (Printed Circuit Board) test frame
By designing a PCB board test frame with structures such as slide rails, support sliders, inner spring damping rods, etc., the problem of cumbersome wearing of electrostatic rings is solved, automatic introduction of static electricity and flexible placement of arms are realized, and the convenience and safety of testing are improved.
Patent Information
- Application Number
- CN202422403008.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-30
AI Technical Summary
During the testing of existing PCB boards, staff need to frequently wear and remove the static ring, which is complicated and easy to forget, resulting in electrostatic breakdown circuits.
A PCB board test frame is designed, which adopts structures such as slide rails, support sliders, inner spring damping rods, support seats, placement frames, buffer pads and contact blocks to realize the automatic introduction of static electricity and the flexible placement of arms, avoiding the wearing and dismounting of the static ring.
The operation process of the electrostatic ring is simplified, the possibility of forgetting static protection is reduced, ensuring that static electricity is safely introduced into the ground, avoiding static breakdown circuits, and at the same time adapting to the movement needs of the arm, improving the convenience and safety of testing.
Smart Images
Figure CN223244664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PCB boards, in particular to a PCB board test rack. Background Art
[0002] PCB is the abbreviation of circuit board. It is an important electronic component, a support for electronic components, and a carrier for the electrical connection of electronic components. After the production of the PCB board is completed and during subsequent maintenance, its various contacts need to be tested to check whether the current and voltage are normal, so as to ensure that the PCB board is qualified or to facilitate the identification of damaged points for repair.
[0003] When testing PCBs, workers typically wear anti-static collars to prevent static electricity from damaging the tiny circuits on the PCBs. These collars are typically connected to a test stand or ground wire via a cable to conduct static electricity to the ground. However, when workers need to move around, such as moving materials or using the restroom, they must first remove the collar and then put it back on after returning to the test stand. This is a cumbersome operation, and if workers forget to remove the collar before moving around or forget to put it back on after returning to the test stand, the collar can easily be torn or static electricity can damage the PCB circuits. Utility Model Content
[0004] Based on this, the purpose of the present invention is to provide a PCB board test stand to solve the technical problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a PCB board test rack, comprising a frame body, a slide rail installed at the bottom of the frame body, and the outer surface of the slide rail is connected to a bracket through a supporting slider, an inner spring damping rod is installed on the top of the bracket, and the top of the inner spring damping rod is connected to a support seat, and a placement rack is passed through the top of the support seat, buffer pads are connected to both sides of the top of the placement rack, a contact block is passed through the top of the placement rack, and the bottom of the contact block is connected to a grounding wire.
[0006] By adopting the above technical solution, when it is necessary to test the PCB board, the staff puts the arm into the placement rack. The setting of the buffer pad makes the staff's arm placement more comfortable. At the same time, the buffer pad is made of latex and has good breathability to avoid the hot environment causing the arm to contact the buffer pad and cause sweating. First, the placement method is convenient for the staff to leave at any time, and there is no need for the staff to remove the static elimination structure from the body before leaving. Second, when the staff returns to the test bench, the placement rack and other structures are very conspicuous in the direction of the outer surface of the test bench, which reduces the staff's forgetting of static protection and the operation is simple and convenient. After the staff's arm is placed, the skin contacts the contact block. At this time, the static electricity of the human body is transmitted to the grounding wire through the contact block. Then, the static electricity is discharged into the ground through the grounding wire to avoid static breakdown of the PCB. The circuit of the CB board; and the bracket, inner spring damping rod, support seat, placement frame, buffer pad and contact block slide left and right together through the slide rail and the support slider, while the placement frame can rotate on the support seat, and when the staff puts down their arms, the inner spring damping rod will be forced to shrink, and at the same time, the support seat, placement frame, buffer pad and contact block will all move down together, and when the staff raises their arms, the inner spring damping rod will automatically extend, so that the support seat, placement frame, buffer pad and contact block will all move up together to adapt to the movement of the staff's arm when performing testing work, to avoid the structural fixation affecting the movement of the staff's arm, or the staff's arm being separated from the contact block when moving; at the same time, the inner spring damping rod has damping to avoid the support seat and placement frame from bouncing up quickly and injuring the staff when the staff removes their arms.
[0007] Furthermore, the bracket is slidably connected to the slide rail via a supporting slider, and the cross-section of the supporting slider is in the shape of a Chinese character "┣".
[0008] By adopting the above technical solution, the bracket, inner spring damping rod, support seat, placement frame, buffer pad and contact block are slid left and right together through the slide rail and support slider to adapt to the movement of the staff's arm when performing testing work, avoiding the influence of structural fixation on the movement of the staff's arm.
[0009] Furthermore, the upper portion of the outer surface of the placement rack and the cross-section of the buffer pad are both U-shaped, and the buffer pad is made of latex material.
[0010] By adopting the above technical solution, the staff puts their arms into the placement rack, and the setting of the cushioning pad makes the staff's arms more comfortable. At the same time, the cushioning pad is made of latex and has good breathability to prevent the hot environment from causing the arms to come into contact with the cushioning pad and cause sweating.
[0011] Furthermore, the bottom of the placement rack is in an inverted "T" shape, and the placement rack is rotatably connected to the support seat.
[0012] By adopting the above technical solution, the placement frame can be rotated on the support seat to adapt to the movement of the staff's arms when performing testing work, avoiding the influence of the fixed structure on the staff's arm movement.
[0013] Furthermore, the contact block is made of copper material, and one end of the grounding wire passes through the outer surface of the placement rack.
[0014] By adopting the above technical solution, static electricity from the human body is transferred to the ground wire through the contact block, and then discharged into the earth through the ground wire, preventing static electricity from breaking through the circuit of the PCB board.
[0015] Furthermore, there are two support sliders, brackets, inner spring damping rods, support seats, placement racks, buffer pads, contact blocks and grounding wires, and the two support sliders, brackets, inner spring damping rods, support seats, placement racks, buffer pads, contact blocks and grounding wires are symmetrically distributed.
[0016] By adopting the above technical solution, since two supporting sliders, brackets, inner spring damping rods, supporting seats, placement racks, buffer pads, contact blocks and grounding wires are provided, it is convenient to place the two arms of the staff.
[0017] Furthermore, a tester is installed on the top of the frame, and a display screen is installed on the outer surface of the tester, and probes are connected to both sides of the outer surface of the tester.
[0018] By adopting the above technical solution, after the arm is placed, the staff will place the PCB board to be tested in the middle of the top of the frame and connect the power supply through the wiring harness. Then the staff will pick up the two probes with both hands and touch the contacts, circuits, and components on the PCB board to measure the current and voltage of each component on the PCB board to check whether the PCB board is normal. At this time, parameters such as current and voltage are displayed on the display screen for the staff to check.
[0019] Furthermore, support feet are fixed on both sides of the bottom of the frame, and the support feet on both sides of the bottom of the frame are arranged in a mirror image.
[0020] By adopting the above technical solution, the support legs are provided to support the frame, so that workers can sit down and move their feet under the frame, thereby increasing comfort during work.
[0021] Furthermore, a return spring is connected to the bottom of the contact block.
[0022] By adopting the above technical solution, the reset spring will always apply upward pressure to the contact block. The reset spring is small in size and the force it applies can only push the contact block upward, so it will not cause great pressure on the staff's arm.
[0023] Furthermore, the contact block is slidably connected to the placement rack, and the cross section of the contact block is in an inverted "T" shape.
[0024] By adopting the above technical solution, when the contact block is under pressure, it can move downward independently to ensure that the staff's arm can fit into the buffer pad, avoiding the contact block from crushing the patient's arm.
[0025] In summary, the present invention has the following beneficial effects:
[0026] 1. The utility model is provided with a placement rack, a buffer pad, a contact block and a grounding wire. When the PCB board needs to be tested, the staff puts the arm into the placement rack. The setting of the buffer pad makes the staff's arm placement more comfortable. At the same time, the buffer pad is made of latex and has good breathability to avoid the hot environment causing the arm to contact the buffer pad and sweat. First, the placement method is convenient for the staff to leave at any time, and the staff does not need to remove the static elimination structure from the body before leaving. Second, when the staff returns to the test bench, the placement rack and other structures are very conspicuous on the outer surface of the test bench, which reduces the staff's forgetting about static protection. The operation is simple and convenient. After the staff's arm is placed, the skin contacts the contact block. At this time, the static electricity of the human body is transferred to the grounding wire through the contact block. Then, the static electricity is discharged into the ground through the grounding wire, preventing static electricity from breaking through the circuit of the PCB board. There is no need to put on and take off the device. The operation is simple and convenient, preventing static electricity from the human body from breaking through the tiny circuit of the PCB board.
[0027] 2. The utility model is provided with a slide rail, a support slider, an inner spring damping rod, a support seat and a placement frame, so that the slide rail and the support slider make the bracket, the inner spring damping rod, the support seat, the placement frame, the buffer pad and the contact block slide left and right together, and at the same time the placement frame can rotate on the support seat, and when the worker puts down his arm, the inner spring damping rod will be forced to contract, and at the same time the support seat, the placement frame, the buffer pad and the contact block will all move down together, and when the worker raises his arm, the inner spring damping rod will automatically extend, so that the support seat, the placement frame, the buffer pad and the contact block will all move up together to adapt to the movement of the worker's arm when performing testing work, avoiding the fixed structure affecting the movement of the worker's arm, or the worker's arm being separated from the contact block when moving; at the same time, the inner spring damping rod has damping, so as to avoid the phenomenon that the support seat and the placement frame quickly bounce upward and injure the worker when the worker removes his arm; the structure is flexible and convenient to adapt to the movement of the worker's arm when performing testing work;
[0028] 3. The utility model arranges the contact block and the return spring. When the contact block is under pressure, it can move downward independently to ensure that the staff's arm can fit with the buffer pad, avoiding the contact block from crushing the patient's arm. At the same time, the return spring will always apply upward pressure to the contact block. The return spring is small in size and the force it applies can only push the contact block upward, so it will not cause a large pressure on the staff's arm, avoiding the occurrence of crushing injuries. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a structural diagram of the utility model;
[0030] Figure 2 This is a schematic diagram of the support structure of the utility model;
[0031] Figure 3 This is a schematic diagram of the side sectional structure of the support seat of the present utility model;
[0032] Figure 4 This is a schematic diagram of the side sectional structure of the slide rail of the present utility model;
[0033] Figure 5 This is a schematic diagram of the top view of the tester of the present invention.
[0034] In the figure: 1. frame; 2. tester; 3. display screen; 4. probe; 5. slide rail; 6. support slider; 7. bracket; 8. inner spring damping rod; 9. support seat; 10. placement rack; 11. buffer pad; 12. contact block; 13. ground wire; 14. reset spring. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0036] The following describes an embodiment of the present invention based on its overall structure. Example 1:
[0037] A PCB board test stand, such as Figure 1-Figure 4As shown, it includes a frame 1, a slide rail 5 is installed at the bottom of the frame 1, and the outer surface of the slide rail 5 is connected to a bracket 7 through a support slider 6. The bracket 7 is slidably connected to the slide rail 5 through the support slider 6. The cross-section of the support slider 6 is in the shape of a "┣". The slide rail 5 and the support slider 6 make the bracket 7, the inner spring damping rod 8, the support seat 9, the placement frame 10, the buffer pad 11 and the contact block 12 slide left and right together; the top of the bracket 7 is installed with an inner spring damping rod 8, and the top of the inner spring damping rod 8 is connected with the support seat 9. When the staff puts down their arms, the inner The spring damping rod 8 will be forced to shrink, and at the same time, the support seat 9, the placement frame 10, the buffer pad 11 and the contact block 12 will all move down together, and when the staff raises their arms, the inner spring damping rod 8 will automatically extend; the top of the support seat 9 is penetrated by the placement frame 10, and the bottom of the placement frame 10 is in an inverted "T" shape. The placement frame 10 is rotatably connected to the support seat 9, and the placement frame 10 can be rotated on the support seat 9 to adapt to the movement of the staff's arm when performing testing work; buffer pads 11 are connected to both sides of the top of the placement frame 10, and the outside of the placement frame 10 is connected to the cushion pads 11. The cross section of the upper surface and the cushion pad 11 are both in a "U" shape. The cushion pad 11 is made of latex material. The setting of the cushion pad 11 makes it more comfortable for the staff to place their arms. At the same time, the cushion pad 11 is made of latex material and has good air permeability to avoid the hot environment causing the arm to contact the cushion pad 11 and cause sweating; a contact block 12 is passed through the top of the placement frame 10. The contact block 12 is made of copper material. A grounding wire 13 is connected to the bottom of the contact block 12. One end of the grounding wire 13 passes through the outer surface of the placement frame 10. The human body The static electricity is transferred to the grounding wire 13 through the contact block 12, and then discharged into the ground through the grounding wire 13 to prevent static electricity from breaking through the circuit of the PCB board; there are two supporting sliders 6, brackets 7, inner spring damping rods 8, support seats 9, placement racks 10, buffer pads 11, contact blocks 12 and grounding wires 13, and the two supporting sliders 6, brackets 7, inner spring damping rods 8, support seats 9, placement racks 10, buffer pads 11, contact blocks 12 and grounding wires 13 are symmetrically distributed, which is convenient for placing the two arms of the staff.
[0038] See Figure 1 and Figure 4 In the above embodiment, a tester 2 is installed on the top of the frame 1, and a display screen 3 is installed on the outer surface of the tester 2. Probes 4 are connected to both sides of the outer surface of the tester 2. After placing the arm, the staff places the PCB board to be tested in the middle of the top of the frame 1 and connects the power supply through the wiring harness. Then the staff picks up the two probes 4 with both hands and contacts them with the contacts, circuits, and components on the PCB board, thereby measuring the current and voltage of each component on the PCB board to check whether the PCB board is normal. At this time, parameters such as current and voltage are displayed on the display screen 3 for the staff to view; supporting feet are fixed on both sides of the bottom of the frame 1, and the supporting feet on both sides of the bottom of the frame 1 are mirrored to facilitate supporting the frame 1. Example 2:
[0039] On the basis of the above embodiment 1, in order to reduce the discomfort caused by the contact block 12, the following configuration is adopted.
[0040] See Figure 3 In the above embodiment, a return spring 14 is connected to the bottom of the contact block 12, and the return spring 14 always applies upward pressure to the contact block 12. The return spring 14 is small in size and can only apply force to push the contact block 12 upward, so it will not cause a large pressure on the staff's arm; the contact block 12 is slidably connected to the placement frame 10, and the cross-section of the contact block 12 is an inverted "T" shape. When the contact block 12 is under pressure, it can move downward independently to ensure that the staff's arm can fit into the buffer pad 11, avoiding the contact block 12 from crushing the patient's arm.
[0041] The implementation principle of the present invention is as follows: first, when it is necessary to test the PCB board, the staff puts the arm into the placement rack 10. The setting of the buffer pad 11 makes the staff's arm more comfortable. At the same time, the buffer pad 11 is made of latex material with good air permeability to prevent the arm from contacting the buffer pad 11 due to the hot environment and causing sweating. After the staff's arm is placed, the skin contacts the contact block 12. When the contact block 12 is under pressure, it can move down alone to ensure that the staff's arm can fit with the buffer pad 11, avoiding the contact block 12 from crushing the patient's arm. At the same time, the reset spring 14 always applies upward pressure to the contact block 12. The reset spring 14 is small in size and the force applied can only push the contact block 12 to move upward, so it will not cause a large pressure on the staff's arm. At this time, the static electricity of the human body is transmitted to the grounding wire 13 through the contact block 12, and then the static electricity is discharged into the ground through the grounding wire 13, avoiding static electricity breakdown of the circuit of the PCB board;
[0042] After placing the arm, the staff will place the PCB to be tested in the center of the top of the frame 1 and connect the power supply through the wiring harness. Then, the staff will pick up the two probes 4 with both hands and touch the contacts, circuits, and components on the PCB to measure the current and voltage of each component on the PCB to check whether the PCB is normal. At this time, the current, voltage and other parameters are displayed on the display screen 3 for the staff to check.
[0043] During the staff test, the bracket 7, inner spring damping rod 8, support seat 9, placement frame 10, buffer pad 11 and contact block 12 slide left and right together through the slide rail 5 and the support slider 6, and the placement frame 10 can rotate on the support seat 9, and when the staff puts down their arms, the inner spring damping rod 8 will be forced to shrink, and at the same time, the support seat 9, placement frame 10, buffer pad 11 and contact block 12 will all move down together, and when the staff raises their arms, the inner spring damping rod 8 will automatically extend, so that the support seat 9, placement frame 10, buffer pad 11 and contact block 12 will all move up together to adapt to the movement of the staff's arm during the test work, to avoid the structural fixation affecting the movement of the staff's arm, or the staff's arm being separated from the contact block 12 during movement; at the same time, the inner spring damping rod 8 has damping to avoid the support seat 9 and placement frame 10 from quickly bouncing upward and injuring the staff when the staff removes their arms.
[0044] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.
Claims
1. A PCB board test stand, comprising a frame (1), characterized in that: A slide rail (5) is installed at the bottom of the frame (1), and the outer surface of the slide rail (5) is connected to a bracket (7) through a supporting slider (6), an inner spring damping rod (8) is installed on the top of the bracket (7), and the top of the inner spring damping rod (8) is connected to a support seat (9), and a placement frame (10) is passed through the top of the support seat (9), and buffer pads (11) are connected to both sides of the top of the placement frame (10), and a contact block (12) is passed through the top of the placement frame (10), and a grounding wire (13) is connected to the bottom of the contact block (12).
2. The PCB test stand according to claim 1, wherein: The bracket (7) is slidably connected to the slide rail (5) via the support slider (6), and the cross section of the support slider (6) is in the shape of a character "┣".
3. The PCB test stand according to claim 1, wherein: The upper portion of the outer surface of the placement rack (10) and the cross-section of the buffer pad (11) are both U-shaped, and the buffer pad (11) is made of latex material.
4. The PCB test stand according to claim 3, wherein: The bottom of the placement rack (10) is in an inverted "T" shape, and the placement rack (10) is rotatably connected to the support seat (9).
5. The PCB test stand according to claim 4, wherein: The contact block (12) is made of copper material, and one end of the grounding wire (13) passes through the outer surface of the placement frame (10).
6. The PCB board test stand according to claim 5, characterized in that: The supporting slider (6), bracket (7), inner spring damping rod (8), supporting seat (9), placing frame (10), buffer pad (11), contact block (12) and grounding wire (13) are each provided with two, and the two supporting sliders (6), bracket (7), inner spring damping rod (8), supporting seat (9), placing frame (10), buffer pad (11), contact block (12) and grounding wire (13) are symmetrically distributed.
7. The PCB test stand according to claim 1, wherein: A tester (2) is installed on the top of the frame (1), and a display screen (3) is installed on the outer surface of the tester (2). Probes (4) are connected to both sides of the outer surface of the tester (2).
8. The PCB test stand according to claim 1, wherein: Support feet are fixed on both sides of the bottom of the frame (1), and the support feet on both sides of the bottom of the frame (1) are arranged in a mirror image.
9. The PCB board test stand according to claim 1, wherein: A return spring (14) is connected to the bottom of the contact block (12).
10. The PCB test stand according to claim 9, wherein: The contact block (12) is slidably connected to the placement frame (10), and the cross section of the contact block (12) is in an inverted "T" shape.