A PCBA board test connector detachment prevention structure

Abstract

This utility model relates to the field of PCBA board testing connector detachment prevention technology, and more particularly to a PCBA board testing connector detachment prevention structure. It includes a circuit test board and a connector. The connector is located on one side of the circuit test board, and a joint is installed on one side of the circuit test board. The joint and the connector are electrically connected. An adjustment device is provided on the surface of the connector and the joint that are close to each other. The adjustment device includes a fixing rod with an "L"-shaped cross-section. The bottom end of the fixing rod is fixedly connected to the upper surface of the connector. An adjustment block with a trapezoidal cross-section is fixedly connected to one end of the fixing rod. Support plates are fixedly connected to both sides of the joint surface. Moving rods slide through the surface of the support plates, and limit blocks are fixedly connected to the ends of the two moving rods that are close to each other. The PCBA board testing connector detachment prevention structure provided by this utility model has the advantage of effectively protecting and limiting the connection of the PCBA board testing connector.

Description

Technical Field

[0001] This utility model relates to the field of PCBA board testing connector detachment technology, and in particular to a PCBA board testing connector detachment structure. Background Technology

[0002] On PCBA boards, connectors are typically used to connect the circuit board to external devices, modules, or other circuits. The reliability of connectors is directly related to the normal operation of the product. As electronic products become more complex and diverse, the types, specifications, and operating environments of connectors have also become more complex. Especially in automated testing environments, connectors need to withstand frequent mating and unmating, vibration, temperature changes, and other factors, all of which can significantly affect the stability and contact quality of the connectors.

[0003] Existing technologies, such as the utility model with publication number CN221947529U, disclose a PCBA board connector for easy PCBA board fixing. This patent includes a first connector and a second connector. The first connector is installed on one side of a first PCBA board, and the second connector is installed on one side of a second PCBA board, with the first connector and the second connector facing each other. A first sleeve is installed at the upper end of one side of the first PCBA board, and a first post is installed at the lower end. A second post is installed at the upper end of one side of the second PCBA board, and a second sleeve is installed at the lower end. The first post is inserted into the second sleeve, and the second post is inserted into the first sleeve. This utility model has a novel structural design, is easy to use, can quickly connect two adjacent PCBA boards, has good connection firmness, is not easy to fall off, and improves the stability of PCBA board operation.

[0004] During PCBA board testing, it was found that the connectors were frequently plugged and unplugged during the operation of the steam oven, such as during functional testing, programming, burning, and aging testing. Frequent operation could easily cause the connectors to loosen or fall off, thus affecting the reliability of testing and production efficiency. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where connectors are frequently plugged and unplugged during the operation of steamers, such as during functional testing, programming, burning, and aging tests. Frequent operation can easily lead to loosening or detachment of the connectors, thereby affecting test reliability and production efficiency.

[0006] To solve the above technical problems, this utility model provides a PCBA board test anti-connector detachment structure, including: a circuit test board and a connector. The connector is located on one side of the circuit test board, and a joint is installed on one side of the circuit test board. The joint is electrically connected to the connector. An adjustment device is provided on the surface of the connector and the joint that are close to each other. The adjustment device includes a fixing rod with an "L"-shaped cross-section. The bottom end of the fixing rod is fixedly connected to the upper surface of the connector. An adjustment block with a trapezoidal cross-section is fixedly connected to one end of the fixing rod. Support plates are fixedly connected to both sides of the surface of the joint. A moving rod slides through the surface of the support plate. Limit blocks are fixedly connected to the ends of the two moving rods that are close to each other. The limit blocks have a wedge-shaped cross-section, and the surface of the limit blocks abuts against the side wall surface of the adjustment blocks. A first spring is sleeved on the arc surface of the moving rod. The two ends of the first spring are fixedly connected to the limit block and the support plate, respectively.

[0007] The aforementioned components achieve the following effect: when the connector and the joint are mated, the trapezoidal adjusting block on the fixing rod presses against the wedge-shaped limiting blocks on both sides, forcing them to move outward and compress the first spring. After mating, under the restoring force of the first spring, the limiting blocks tightly lock against the side walls of the adjusting blocks. This self-locking structure of the wedge-shaped and trapezoidal surfaces generates a huge normal force, thus forming a strong frictional force, effectively locking the connector and the joint, preventing them from falling off due to vibration or external force during testing, and ensuring the stability of the electrical connection and the reliability of the test.

[0008] Preferably, a protective frame is fixedly connected to the surface of the connector corresponding to the positions of the adjusting block and the limiting block. The protective frame is a stainless steel frame, and guide plates are fixedly connected to both sides of the surface of the protective frame. The cross-section of the guide plates is inclined.

[0009] The aforementioned components achieve the following effects: The stainless steel protective frame primarily protects the internal precision locking mechanisms, such as the adjusting blocks and limiting blocks, from damage or deformation due to accidental impacts. Secondly, the inclined guide plate serves as a guide and initial positioning element, guiding the connector during insertion and making it easier and more accurate to align the connector head, simplifying the operation process and improving docking efficiency and success rate.

[0010] Preferably, a side plate is fixedly connected to one side of the arc surface of the movable rod, and the surface of the side plate slides through the surface of the support plate.

[0011] The aforementioned components achieve the following effect: the sliding connection between the side plate and the support plate adds an extra sliding support point and guide structure to the moving rod. This greatly enhances the stability of the moving rod during sliding, preventing it from wobbling or deviating, ensuring that the limit block can always move smoothly along the predetermined trajectory, thereby guaranteeing precise and reliable engagement and disengagement with the adjusting block.

[0012] Preferably, a fixed ring is rotatably connected to one end surface of the movable rod, the fixed ring has a vertical cross-section, and through holes are provided on both sides of the protective frame, the inner wall of the through holes slidingly penetrating the fixed ring.

[0013] The aforementioned components achieve the following effect: the fixing ring engages with the through hole on the protective frame, forming a secondary limiting and guiding mechanism. This not only further restricts the range of motion of the moving rod, preventing excessive movement or detachment from the support plate and enhancing the overall structural strength and reliability, but also provides guidance during the sliding of the moving rod, ensuring a more precise movement trajectory.

[0014] Preferably, an auxiliary device is provided on the lower surface of the circuit test board. The auxiliary device includes a support frame, the inner wall surface of which abuts against the lower surface of the circuit test board. Supports are fixedly connected to both sides of the lower surface of the support frame. The cross-section of the support is "L"-shaped, and the cross-sections of the two ends of the support frame are "U"-shaped. Several telescopic rods are fixedly connected to the inner walls of the two ends of the support frame. One end of the several telescopic rods is fixedly connected to the same extrusion plate. Several extrusion blocks are fixedly connected to the surface of the extrusion plate. The cross-section of the extrusion blocks is conical. A second spring is sleeved on the arc surface of the fixed end of the telescopic rod. The two ends of the second spring are fixedly connected to the moving end of the telescopic rod and the inner wall surface of the support frame, respectively.

[0015] The aforementioned components achieve the following effect: the second spring pushes the extrusion plate and the conical extrusion block, causing them to adhere tightly to the test stage. The conical extrusion block can embed into the relatively soft stage surface, thus providing strong anti-slip and anti-displacement capabilities, effectively preventing the entire test board from moving or sliding during connector insertion / removal or testing, providing a stable foundation for testing.

[0016] Preferably, the upper surfaces of both ends of the support frame are provided with sliding grooves, the inner walls of the sliding grooves are slidably connected to sliding plates, and the bottom end of the sliding plates is fixedly connected to the surface of the extrusion plate.

[0017] The effect achieved by the above components is that the sliding engagement between the slide plate and the groove provides a vertical guiding constraint for the up-and-down movement of the extrusion plate. This ensures that the extrusion plate and the second spring can only compress and rebound in the vertical direction, without lateral twisting or displacement, so that the extrusion block can always press vertically against the table surface, ensuring uniform and effective clamping force.

[0018] Preferably, a friction strip, which is a rubber strip, is fixedly connected to the surface of the extrusion block.

[0019] The aforementioned components achieve the following effects: by adding rubber friction strips to the surface of the metal extrusion block, a dual fixing effect is achieved. The rubber strips increase the static friction between the rubber strips and the test surface, providing excellent anti-slip properties even on smooth surfaces. Simultaneously, the soft rubber layer prevents hard metal spikes from scratching or damaging the working surface of the test stage, thus providing protection.

[0020] Compared with related technologies, the PCBA board testing anti-connector detachment structure provided by this utility model has the following beneficial effects: This utility model provides a PCBA board testing anti-connector detachment structure. By operating the adjustment device, it achieves automatic locking and rapid release of the connection point between the connector and the mating head. It utilizes the self-locking principle of the wedge-shaped surface and the trapezoidal surface to generate huge friction force, effectively preventing the connector from loosening or falling off due to vibration or external force during the test, and greatly improving the stability and reliability of the test connection.

[0021] By operating the auxiliary device, the circuit test board body can be quickly installed and secured. The spring-driven cone-shaped extrusion block is embedded in the test platform, providing strong anti-slip and anti-displacement capabilities, ensuring that the entire test platform remains stable during operation, providing a solid foundation for accurate testing, and protecting the test platform from scratches. Attached Figure Description

[0022] Figure 1 A schematic diagram of a PCBA board testing anti-connector detachment structure provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the regulating device. Figure 3 for Figure 2 The diagram shows the disassembled structure of the adjustment device. Figure 4 for Figure 1 The diagram shows the structure of the auxiliary device.

[0023] The following are the labeling elements in the diagram: 1. Circuit test board; 2. Connector; 3. Connector head; 4. Adjustment device; 401. Fixing rod; 402. Adjusting block; 403. Protective frame; 404. Guide plate; 405. Through hole; 406. Fixing ring; 407. Support plate; 408. Limiting block; 409. First spring; 410. Side plate; 411. Moving rod; 5. Auxiliary device; 51. Bearing frame; 52. Bracket; 53. Slide groove; 54. Slide plate; 55. Extrusion plate; 56. Telescopic rod; 57. Second spring; 58. Extrusion block; 59. Friction strip. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 4 The present invention provides a PCBA board test anti-connector detachment structure, comprising: a circuit test board 1 and a connector 2. The connector 2 is located on one side of the circuit test board 1. A connector 3 is installed on one side of the circuit test board 1. The connector 3 is electrically connected to the connector 2. An adjustment device 4 is provided on the surface of the connector 2 and the connector 3 that are close to each other. An auxiliary device 5 is provided on the lower surface of the circuit test board 1.

[0027] In the embodiments of this utility model, please refer to Figure 2 and Figure 3The adjusting device 4 includes a fixed rod 401 with an "L"-shaped cross-section. The bottom end of the fixed rod 401 is fixedly connected to the upper surface of the connector 2. An adjusting block 402 with a trapezoidal cross-section is fixedly connected to one end of the fixed rod 401. Support plates 407 are fixedly connected to both sides of the surface of the connector 3. Moving rods 411 slide through the surface of the support plates 407. Limiting blocks 408 are fixedly connected to the ends of the two moving rods 411 that are close to each other. The limiting blocks 408 have a wedge-shaped cross-section. The surface of the limiting blocks 408 is flush with the side wall of the adjusting block 402. The surfaces of the moving rod 411 are in contact with each other. A first spring 409 is fitted on the arc surface of the moving rod 411. The two ends of the first spring 409 are fixedly connected to the limiting block 408 and the support plate 407, respectively. A protective frame 403 is fixedly connected to the surface of the connecting head 3 at the positions corresponding to the adjusting block 402 and the limiting block 408. The protective frame 403 is a stainless steel frame. Guide plates 404 are fixedly connected to both sides of the surface of the protective frame 403. The cross section of the guide plates 404 is inclined. A side plate 410 is fixedly connected to one side of the arc surface of the moving rod 411. The surface of the side plate 410 slides through the surface of the support plate 407. A fixing ring 406 is rotatably connected to one end of the moving rod 411. The cross section of the fixing ring 406 is vertical. Through holes 405 are opened on both sides of the protective frame 403. The inner wall of the through hole 405 slides through the fixing ring 406. In the embodiments of this utility model, please refer to Figure 4 The auxiliary device 5 includes a support frame 51. The inner wall surface of the support frame 51 abuts against the lower surface of the circuit test board 1. Supports 52 are fixedly connected to both sides of the lower surface of the support frame 51. The cross-section of the support 52 is "L" shaped. The cross-sections of the two ends of the support frame 51 are "U" shaped. Several telescopic rods 56 are fixedly connected to the inner walls of the two ends of the support frame 51. One end of the several telescopic rods 56 is fixedly connected to the same extrusion plate 55. Several extrusion blocks 58 are fixedly connected to the surface of the extrusion plate 55. The cross-section of the extrusion block 58 is conical. The fixed end of the telescopic rod 56 is fitted with a second spring 57. The two ends of the second spring 57 are fixedly connected to the moving end of the telescopic rod 56 and the inner wall surface of the support frame 51, respectively. Slide grooves 53 are opened on the upper surfaces of both ends of the support frame 51. Slide plates 54 are slidably connected to the inner walls of the slide grooves 53. The bottom end of the slide plates 54 is fixedly connected to the surface of the extrusion plate 55. Friction strips 59 are fixedly connected to the surface of the extrusion blocks 58. Friction strips 59 are rubber strips. The working principle of the PCBA board test anti-connector detachment structure provided by this utility model is as follows: When it is necessary to connect the connector 2 and the connector 3, the operator pushes the connector 2 towards the connector 3. The trapezoidal adjusting block 402 on the fixing rod 401 will first contact the wedge-shaped limiting blocks 408 on both sides of the connector 3. Under the guidance of the inclined surface, the adjusting block 402 squeezes the limiting block 408, forcing the limiting block 408 to overcome the elastic force of the first spring 409 and move away from the connector 2. When the connector 2 is fully inserted and the adjusting block 402 has completely passed the most protruding point of the limiting block 408, the restoring force of the compressed first spring 409 will push the limiting block 408 to reset inward, so that its wedge-shaped surface tightly locks the adjusting block 402. Due to the wedge-shaped structure, the horizontal spring force on the inclined sidewall of segment 402 is converted into a huge vertical normal pressure. This pressure generates a large static friction between the limiting block 408 and the adjusting block 402, thus firmly locking the connector 2 in the connector 3, forming a reliable connection. When it is necessary to remove the connector 2, the operator needs to manually pull the two moving rods 411 outward, causing the limiting block 408 to overcome the spring force and move outward again, releasing the locking state between it and the adjusting block 402. At this time, the connector 2 can be easily pulled out of the connector 3. The circuit test board 1 is placed in the support frame 51, and the entire device, including the circuit test board 1 and the support frame 51, is placed on the test platform, and downward pressure is applied. The pressing plates 55 and pressing blocks 58 at both ends of the support frame 51 are subjected to the reaction force of the platform and will move upward, compressing the telescopic rod 56 and the second spring 57. The restoring force of the second spring 57 will continue to push the pressing plates 55 and pressing blocks 58 downward, making them firmly adhere to the test platform.

[0028] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A PCBA board testing structure to prevent connector detachment, characterized in that, include: A circuit test board (1) and a connector (2) are provided. The connector (2) is located on one side of the circuit test board (1). A connector (3) is installed on one side of the circuit test board (1). The connector (3) is electrically connected to the connector (2). An adjustment device (4) is provided on the side surface of the connector (2) and the connector (3) that are close to each other. The adjustment device (4) includes a fixing rod (401). The cross-section of the fixing rod (401) is "L". The bottom end of the fixing rod (401) is fixedly connected to the upper surface of the connector (2). An adjustment block (402) is fixedly connected to one end of the fixing rod (401). The cross-section of the segment (402) is trapezoidal. Support plates (407) are fixedly connected to both sides of the surface of the connector (3). A moving rod (411) slides through the surface of the support plate (407). Limiting blocks (408) are fixedly connected to the ends of the two moving rods (411) that are close to each other. The cross-section of the limiting block (408) is wedge-shaped. The surface of the limiting block (408) abuts against the side wall surface of the adjusting block (402). A first spring (409) is sleeved on the arc surface of the moving rod (411). The two ends of the first spring (409) are fixedly connected to the limiting block (408) and the support plate (407) respectively.

2. The PCBA board test connector detachment prevention structure according to claim 1, characterized in that, The surface of the connector (3) is fixedly connected to a protective frame (403) at the position corresponding to the adjustment block (402) and the limiting block (408). The protective frame (403) is a stainless steel frame. Guide plates (404) are fixedly connected to both sides of the surface of the protective frame (403). The cross section of the guide plate (404) is inclined.

3. The PCBA board test connector detachment prevention structure according to claim 1, characterized in that, A side plate (410) is fixedly connected to one side of the arc surface of the moving rod (411), and the surface of the side plate (410) slides through the surface of the support plate (407).

4. The PCBA board test connector detachment prevention structure according to claim 2, characterized in that, One end of the movable rod (411) is rotatably connected to a fixed ring (406). The fixed ring (406) has a vertical cross section. Both sides of the protective frame (403) are provided with through holes (405). The inner wall of the through hole (405) slides through the fixed ring (406).

5. The PCBA board test connector detachment prevention structure according to claim 1, characterized in that, The lower surface of the circuit test board (1) is provided with an auxiliary device (5). The auxiliary device (5) includes a support frame (51). The inner wall surface of the support frame (51) abuts against the lower surface of the circuit test board (1). Both sides of the lower surface of the support frame (51) are fixedly connected with brackets (52). The cross section of the brackets (52) is "L" shaped. The two ends of the support frame (51) are "U" shaped. Several telescopic rods (56) are fixedly connected to the inner walls of the two ends of the support frame (51). One end of several telescopic rods (56) is fixedly connected to the same extrusion plate (55). Several extrusion blocks (58) are fixedly connected to the surface of the extrusion plate (55). The cross section of the extrusion block (58) is conical. The fixed end of the telescopic rod (56) is fitted with a second spring (57). The two ends of the second spring (57) are fixedly connected to the moving end of the telescopic rod (56) and the inner wall surface of the support frame (51), respectively.

6. The PCBA board test connector detachment prevention structure according to claim 5, characterized in that, The upper surfaces of both ends of the support frame (51) are provided with grooves (53), and the inner wall of the groove (53) is slidably connected to a slide plate (54). The bottom end of the slide plate (54) is fixedly connected to the surface of the extrusion plate (55).

7. The PCBA board test connector detachment prevention structure according to claim 5, characterized in that, The surface of the extrusion block (58) is fixedly connected with a friction strip (59), which is a rubber strip.

Images